• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    point-to-point transfer method and device in a mobile communication system. a method for point-to-point transfer of a user entity (ue) by a source base station (bs) is provided. the method includes determining whether to transfer point-to-point to eu using an x2 interface, transmitting a point-to-point transfer request message to the target bs, the point-to-point transfer request message including an information subscriber group (csg) from a target bs, and the receipt of a point-to-point transfer request acknowledgment message from the target bs, wherein determining whether to transfer from point-to-point to eu using the x2 interface includes, if there is an x2 interface between the source bs and the target database, and if the target bs does not support a csg or the target bs supports the same cgs supported by the source bs, determine that it is to perform the eu point-to-point transfer using the x2 interface, and getting the csg information from the target bs through an x2 interface establishment procedure.
    公开号:BR112012027750B1
    申请号:R112012027750-2
    申请日:2011-04-26
    公开日:2022-01-18
    发明作者:Lixiang Xu；Hong Wang；Huarui Liang
    申请人:Samsung Electronics Co., Ltd；
    IPC主号:
    专利说明:

    Technical Field
    [001] The present invention relates to a point-to-point transfer method and an apparatus using an X2 interface in a mobile communication system. Background Technique
    [002] Long-term evolution (LTE) is a third-generation (3G) mobile communication system evolution technology, and it has several advantages, such as improved cell capacity and reduced system delay.
    [003] Figure 1 is a schematic diagram illustrating an architecture of an LTE system according to the related technique.
    [004] Referring to Figure 1, the evolved universal terrestrial radio access network (E-UTRAN) of the LTE system typically includes radio resource management entities such as evolved B-Nodes (eNBs) and home eNBs (HeNBs) , and can even include HeNB gateways (GWs). When HeNB GWs are not included, HeNBs can connect directly to mobile management entities (MMEs) of the core network. When the HeNB GWs are included, the HeNBs connect to the MMEs through the HeNB GW. MMEs are important network entities of the core network, and are responsible for functions such as radio access bearer establishment and mobility management.
    [005] In the mobile communication system, in order to provide better services for particular users, regarding a particular group, it is usually necessary to form a closed subscriber group (CSG) with multiple radio resource management entities. For example, all users in a company or campus form a particular user group. A CSG is formed for this user group with multiple radio resource management entities for the provision of specialized access services.
    [006] LTE radio resource management entities include eNB 101 and HeNB 1030. LTE radio resource management entities may still include GW of HeNB 103. Each eNB 101 is connected to each other via from an X2 interface. Each eNB 101 is directly connected to the MME 104 on a core network (CN) via an S1 interface. HeNB 102 can connect to GW of HeNB 103 through interface S1, and then GW of HeNB 103 can connect to MME 104 through interface S1. When there is no GW of HeNB 103 employed in the system, the HeNB 102 connects directly to the MME 104 via the S1 interface. Both the eNB 101 and HeNB 102 can connect to multiple MMEs 104 on the CN.
    [007] In order to provide richer access services, the LTE system radio resource management entities shown in figure 1 usually include more types. For example, HeNBs are classified into Open HeNBs, Hybrid HeNBs, and CSG HeNBs. Open HeNBs denote HeNBs which are not targeted at any particular user group, and which any user entity (UE) can access. CSG HeNBs denote HeNBs in the CSG user group, and only allow access to UEs in the particular group served by the CSG HeNBs. Hybrid HeNBs denote the HeNBs which support the CSG function, allow access by UEs in the particular user group served by the hybrid HeNBs, and also allow access by UEs in a general user group.
    [008] the UE can move between different HeNBs and between a HeNB and an eNB. The UE movement is implemented through a point-to-point transfer of S1. S1 point-to-point transfer represents a point-to-point transfer using an S1 interface.
    [009] Figure 2 is a schematic diagram illustrating a S1 point-to-point transfer procedure according to the related technique. Suppose each of the HeNBs connects to the MME through the HeNB GW.
    [0010] Referring to Fig. 2, a source HeNB 217 sends a required point-to-point transfer message to a GW of HeNB 219 in step 201a. How to send a measurement report to source HeNB 217 from UE 216 and how to initiate point-to-point transfer by source HeNB 217 are not introduced here.
    [0011] In step 201b, the HeNB GW 219 sends the required point-to-point transfer message to the MME (220).
    [0012] In step 202a, the MME 220 sends a point-to-point transfer request message to the HeNB GW 219, and in step 202b, the HeNB GW 219 sends the point-to-point transfer request message to the target HeNB. Source HeNB 217 denotes the HeNB in which UE 216 is originally located. Target HeNB 218 refers to the HeNB to which the UE performs the point-to-point transfer.
    [0013] In step 203, target HeNB 218 allocates resources to UE 216 and, in step 203a, sends a point-to-point transfer request acknowledgment message to HeNB GW 219. In step 203b, the target GW HeNB 219 sends the point-to-point transfer request acknowledgment message to the MME 220.
    [0014] In step 205a, the MME 220 sends a point-to-point transfer command message to the HeNB GW 219. In step 205a, the HeNB GW 219 sends the point-to-point transfer command message to the 217 source HeNB.
    [0015] In step 206, source HeNB 217 sends a Radio Resource Control Connection (RRC) Reconfiguration message to UE 216.
    [0016] In step 207, UE 216 synchronizes with target cell, and in step 208, sends RRC connection reconfiguration completion message to target HeNB 218.
    [0017] In step 209a, the target HeNB 218 sends a peer-to-peer handover notification message to the HeNB GW 219. In step 209a, the HeNB GW 219 sends the peer-to-peer handover notification message to the MME 220.
    [0018] In step 210, MME 220 sends a carrier modification request message to a service gateway / packet data network gateway (S-GW / PDN GW) 225. The S-GW is mainly used for the provision of a user plan function. The PDN GW is mainly used for functions such as loading and legal interception. In step 211, the S-GW and the PDN GW can be regulated in the same physical entity, or be two entities. This step omits signaling interactions between the S-GW and the PDN GW.
    [0019] In step 212, the S-GW/GW of PDN 225 sends a Carrier Modification Response message to the MME 220.
    [0020] In step 213, the UE 216 initiates a tracking area update (TAU) process.
    [0021] In step 213a, the MME 220 sends a UE context release command message to the HeNB GW 219. In step 213b, the HeNB GW 219 sends the UE context release command message to the HeNB font 217.
    [0022] In step 214a, source HeNB 217 sends UE context release completion message 216 to HeNB GW 219. In step 214b, HeNB GW 219 sends UE context release completion message 216 for the EMA 220.
    [0023] Although the above process can implement the point-to-point transfer procedure, taking into account the large number of HeNBs and frequent UE point-to-point transfer, if each point-to-point transfer is implemented through the point-to-point transfer from S1, the burden of the core network is heavily increased and the efficiency of the point-to-point transfer is reduced. Similarly, the above issues also exist when the UE moves between HeNB and eNB, and between eNB and eNB.
    [0024] In the related technique, as described above, a movement of the UE between HeNB and eNB is also achieved through the point-to-point transfer of S1. From the above analysis, it can be seen that a UE movement between HeNBs through a point-to-point transfer of S1 is obtained through the CN, which includes a point-to-point transfer preparation and a data forwarding. If each UE move between HeNBs is achieved through a point-to-point transfer of S1, a very heavy load will be created for the CN, due to the immense number of HeNBs. Point-to-point transfer efficiency may be reduced.
    [0025] However, it is not necessary that point-to-point transfer preparation and data forwarding be performed in the previous X2 point-to-point transfer process via the MME. Thus, the point-to-point handoff process of X2 can be applied to the movement of a UE between HeNBs.
    [0026] Figures 3a to 3c are a schematic connection diagram illustrating the application of point-to-point transfer from X2 to a HeNB according to the related technique. Figure 3a is a schematic connection diagram illustrating the movement (300) of a UE between HeNBs 305a and 305b through a point-to-point transfer of X2. Fig. 3b is a schematic connection diagram illustrating a movement (310) of a UE from the HeNB 315 to the eNB 320 via a point-to-point transfer of X2. Fig. 3c is a schematic connection diagram illustrating a movement (325) of UE from eNB 330 to HeNB 335 through a point-to-point transfer of X2.
    [0027] With reference to figures 3a to 3c, since the HeNB GW has a non-access stratum (NAS) node selection function (NNSF), the HeNB GW will select a serving MME for a UE under the HeNB, when the HeNB accesses the MME through the HeNB GW. However, the HeNB does not learn the MME selected by the HeNB GW for the UE. Therefore, when performing the point-to-point transfer of X2, the source HeNB cannot inform the target HeNB of the UE serving MME. Subsequently, the target HeNB or the target HeNB eNB or GW will not learn to which MME the path-switch request message should be sent. The peer-to-peer transfer process will be unsuccessful if the message has been sent to another MME, rather than the MME essentially accessed by the UE. Exhibition of the InventionTechnical Problem
    [0028] In the related technique, as described above, a movement of the UE between HeNB and eNB is also achieved through a point-to-point transfer of S1. From the above analysis, it can be seen that a UE move between HeNBs via the S1 point-to-point handover is achieved through the CN, which includes a point-to-point handover preparation and a data forwarding. If each UE move between HeNBs is achieved through a point-to-point transfer of S1, a very heavy load will be created for the CN, due to the immense number of HeNBs. Point-to-point transfer efficiency may be reduced.
    [0029] However, it is not necessary that a point-to-point transfer preparation and data forwarding in the previous X2 point-to-point transfer process be performed through the MME. Thus, the point-to-point transfer process of X2 can be applied for UE movement between HeNBs.Solution to the Problem
    [0030] Aspects of the present invention are to address the problems and/or disadvantages mentioned above and to provide at least the advantages described below. Therefore, an aspect of the present invention is to provide a point-to-point transfer method using an X2 interface in the mobile communication system.
    [0031] Another aspect of the invention is to provide that a Mobile Management Entity (MME) identifier of an MME accessed by a User Entity (UE) to perform the point-to-point transfer of X2 is provided to a Node Target evolved B (eNB) / home eNB (HeNB) or target HeNB gateway (GW) during X2 point-to-point transfer.
    [0032] In accordance with an aspect of the present invention, a method for point-to-point transfer of a user entity (UE) by a source base station (BS) is provided. The method includes determining whether to transfer the UE from point-to-point using an X2 interface, transmitting a point-to-point transfer request message to the target BS, the point-to-point transfer request message including an information subscriber group (CSG) message from a target BS, and receipt of a point-to-point transfer request acknowledgment message from the target BS, wherein determining whether to transfer the UE from point-to-point using the X2 interface includes, if there is an X2 interface between the source BS and the target database, and if the target BS does not support a CSG or the target BS supports the same CSG supported by the source BS, determine that it is to perform the point-to-point transfer of the UE using the X2 interface, and obtaining the CSG information from the target BS through an X2 interface establishment procedure.
    [0033] In accordance with another aspect of the present invention, a method for point-to-point transfer of a user entity (UE) by a target base station (BS) is provided. The method includes receiving a point-to-point transfer request message from a source BS, the point-to-point transfer request message including a CSG information from a target BS, if the CSG information includes a first identifier (ID) of CSG, determining whether the first CSG ID and a second CSG ID are the same, and obtaining the second CSG ID from the CSG information broadcast from the target cell, if the first CSG ID and the second CSG ID are the same, transmitting a point-to-point transfer request acknowledgment message to the source BS, and receiving a radio resource control (RRC) reconfiguration message from the UE, the transmission of a path-switch request message including the second CSG ID to a mobility management entity (MME), and, if a path-switch request acknowledgment message is received from the the MME, transmitting an uplink context release (UL) message to the source BS.
    [0034] According to another aspect of the present invention, a method for point-to-point transfer of a User Entity (UE) by a Mobility Management Entity (MME) is provided. The method includes receiving a path-switch request message from a target BS, the path-switch request message including the CSG information of the target BS, if the CSG information indicates that the target BS is a BS of CSG supporting a specific CSG, transmitting a carrier update request message including a user CSG information to a user plan entity, and receiving a carrier update response message, and transmitting a path switching request acknowledgment message to the target BS, wherein the CSG information from the target BS or the CSG information broadcast from the target cell includes an access mode indicating that the target BS is a BS of CSG supporting a specific CSG or a hybrid BS supporting the specific CSG and UEs not included in the specific CSG, if the target BS is the CSG BS or the hybrid BS, the CSG information will include a CSG ID of the specific CSG co, and if the target BS supports the same CSG as the source BS, the CSG information will include an identifier indicating that the target BS supports the same CSG.
    [0035] According to another aspect of the present invention, a source base station (BS) for point-to-point transfer of a user entity (UE) is provided. The source BS includes a controller for determining whether to transfer the UE from point to point using an X2 interface, a transmitter for transmitting a point to point transfer request message to a target BS, the request message from point-to-point transfer including a CSG information from the target BS, and a receiver for receiving a point-to-point transfer request acknowledgment message from the target BS, wherein, if there is an X2 interface between the BS source and the target BS, and if the target BS does not support a CSG or target aBS supports the same CSG supported by the source BS, the controller will determine that it is to perform the UE point-to-point transfer using the X2 interface, and will obtain the CSG information of the target BS through an X2 interface establishment procedure.
    [0036] According to another aspect of the present invention, a target base station (BS) for point-to-point transfer of a user entity (UE) is provided. The target BS includes a receiver for receiving a point-to-point transfer request message comprising CSG information from a target BS from a source BS, a controller for determining whether the CSG information includes a first CSG ID, if the first CSG ID and the second CSG ID are the same, and for obtaining the second CSG ID from the CSG information broadcast from the target cell, and if the first CSG ID and the second CSG ID are the same, the transmitter will transmit a point-to-point transfer request acknowledgment message to the source BS, the receiver will receive a radio resource control reconfiguration message from the UE, the transmitter will transmit a message path switching request including the second CSG ID for a mobility management entity (MME), and wherein, if a path switching request acknowledgment message is received by the receiver r from the MME, the sender will transmit a UL context release message to the source BS.
    [0037] In accordance with another aspect of the present invention, a Mobility Management Entity (MME) method for point-to-point transfer of a User Entity (UE) is provided. The MME method includes receiving a path-switching request message from a target BS, the path-switching request message including a CSG information from the target BS, if the CSG information indicates that the target BS is a CSG BS supporting a specific CSG, the transmission of a carrier update request message including a user CSG information to a user plan entity, wherein, if a carrier update response message is received , transmitting a path-switch request acknowledgment message to the target BS, and wherein the CSG information from the target BS or the CSG information broadcast from the target cell includes an access mode indicating that the target BS is a CSG BS supporting a specific CSG, where if the target BS is the CSG BS or the hybrid BS, the CSG information will include a CSG ID of the specific CSG, and where if the target BS supports the same CSG supported by source BS, the CSG information will include an identifier indicating that the target BS supports the same CSG.
    [0038] Other salient aspects, advantages and features of the invention will become apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the accompanying drawings, sets out exemplary embodiments of the invention. Advantageous Effects of the Invention
    [0039] Adopting the technical scheme of the present invention, when the pre-regulated condition is satisfied, for example, the UE moves in the same CSG, or the UE moves to an open cell, or the UE moves to a cell hybrid, the point-to-point transfer of X2 is adopted. Compared to the S1 point-to-point transfer, the X2 point-to-point transfer procedure requires fewer steps to perform the signaling interaction with the MME. Thus, the processing burden of the core network is reduced, and the point-to-point transfer efficiency is improved. Brief Description of Drawings
    [0040] The above and other aspects, features and advantages of certain exemplary embodiments of the present invention will become more apparent from the following description taken in conjunction with the associated drawings, in which:
    [0041] Figure 1 is a schematic diagram illustrating a structure of a long-term evolution (LTE) system in accordance with the related art;
    [0042] Figure 2 is a schematic diagram illustrating the point-to-point transfer of conventional S1 according to the related technique;
    [0043] Figures 3a to 3c are schematic diagrams illustrating each type of connection structure when applying a point-to-point transfer from X2 to a domestic evolved Node B (HeNB) according to the related technique;
    [0044] FIG. 4 is a schematic illustration of a link structure when performing a point-to-point transfer of X2 through a HeNB in accordance with an exemplary configuration of the present invention;
    [0045] Figure 5a is a flowchart illustrating a point-to-point transfer method of X2 according to a first exemplary embodiment of the present invention;
    [0046] Figure 5b is a schematic diagram illustrating an X2 interface establishment procedure in accordance with a first exemplary embodiment of the present invention;
    [0047] Fig. 6 is a flowchart illustrating a point-to-point transfer method of X2 according to a second exemplary embodiment of the present invention;
    [0048] Fig. 7 is a workflow of accessing a network by the user entity (UE) through a HeNB using the network of Fig. 4 according to an exemplary embodiment of the invention;
    [0049] Fig. 8 is a workflow of a point-to-point transfer of X2 obtained with a HeNB according to a third exemplary embodiment of the present invention;
    [0050] Figure 9 is a block diagram illustrating a structure of a HeNB/eNB or a base station (BS) according to an exemplary embodiment of the present invention; and
    [0051] Fig. 10 is a block diagram illustrating a structure of a mobile management entity (MME) according to an exemplary embodiment of the present invention.
    [0052] Throughout the drawings, it should be noted that like reference numbers are used for the description of the same or similar elements, features and structures. Best Mode for Carrying Out the Invention
    [0053] The following description with reference to the associated drawings is provided to aid in a comprehensive understanding of exemplary embodiments of the invention as defined by the claims and their equivalents. It includes several specific details to aid in that understanding, but these are to be regarded as examples only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications to the embodiments described herein may be made without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions may be omitted for clarity and brevity.
    [0054] The terms and words used in the following description and claims are not limited to bibliographic meanings, but are merely used by the inventor to allow a clear and consistent understanding of the invention. Accordingly, it should be apparent to those skilled in the art that the following description of exemplary embodiments of the present invention is provided for purposes of illustration only and not for purposes of limiting the invention as defined by the appended claims and their equivalents.
    [0055] It is to be understood that the singular forms "a", "an", and "the" include plural referents, unless the context clearly dictates otherwise. So, for example, a reference to “a component surface” includes a reference to one or more of these surfaces.
    [0056] The exemplary embodiment of the invention provides a point-to-point transfer scheme using an X2 interface to reduce the processing burden of the core network in the mobile communication system. When the user entity (UE) moves in the same closed subscriber group (CSG), either the UE moves to an open cell (can be a cell covered by a HeNB or a cell covered by an eNB), or it moves for a hybrid cell, a point-to-point transfer of X2 is adopted. Since fewer steps for interaction with a mobile management entity (MME) are required in the X2 peer-to-peer handover process, the core network processing burden is reduced, and the peer-to-peer handover efficiency is reduced. is improved in accordance with the first and second exemplary embodiments of the present invention. Under a few circumstances, such as when the UE moves from one CSG to another CSG, the point-to-point transfer of S1 can still be adopted.
    [0057] According to a third exemplary embodiment of the present invention, when a UE connects to a network via a HeNB, an MME or a HeNB GW sends the MME identifier of the UE MME to the HeNB. When performing an X2 point-to-point transfer, the HeNB can send the MME identifier to the target eNB/HeNB to which the UE should transfer from point-to-point, in order to allow the target eNB/HeNB to send successfully a path-switch request message to the MME serving the UE. When the target HeNB accesses the MME through the HeNB gateway (GW), the target HeNB sends the MME identifier to the target HeNB GW, to allow the target HeNB GW to successfully send the request message path switching for the MME serving the UE, and for reducing frequent interactions with a core network (CN) during an S1 point-to-point handover process, when a successful X2 point-to-point handoff is guaranteed . Thus, the influence of the point-to-point transfer process on the CN is reduced, and a point-to-point transfer delay is reduced.
    [0058] The scheme of an example embodiment of the present invention can be implemented based on the network structure illustrated in Figure 4.
    [0059] Figure 4 is a schematic diagram illustrating a connection structure when performing a point-to-point transfer of X2 through a HeNB in accordance with an exemplary embodiment of the present invention.
    [0060] Referring to Figure 4, both HeNB 400a and oHeNB 400b and eNB 410 connect to MME 415 in the core network through S1 interfaces and adopt an S1 protocol stack. Each HeNB 400a and 400b also connects to the GWs of HeNB405a and 405b via the S1 interface, and adopts an S1 protocol stack. Each HeNB 405a and 405b connects to another HeNB, and each HeNB 405a and 405b connects to an eNB 410 through an X2 interface and adopts an X2 stack protocol. Depending on the carrier arrangement, the HeNB 405a and 405b GWs may or may not exist. If the HeNB GW does not exist, the HeNB will connect directly to the MME 415 via the S1 interface.
    [0061] The first example embodiment of the present invention can apply to the following situations involving a point-to-point transfer of X2, including when the UE moves between HeNBs, when the UE moves between the HeNBe and the eNB, and when the UE moves between eNBs. The point-to-point transfer of X2 is performed in these situations. Furthermore, the scheme of an exemplary embodiment of the present invention can also apply to the scheme in which the UE moves between different base stations (BSs), HeNBs, eNBs and between the HeNB in the 3rd generation (3G) network.
    [0062] Figure 5a is a flowchart illustrating a point-to-point transfer method of X2 according to a first exemplary embodiment of the present invention. As shown in figure 5a, the following steps can be included. The UE moves between different BSs (a source BS and a target BS), but the scheme of an example embodiment of the present invention can also apply to the scheme in which the UE moves between devices connected to the X2 interface. Appliances include HeNBs and eNBs.
    [0063] Referring to Figure 5a, a source BS 502 makes a point-to-point transfer decision in step 507.
    [0064] In step 508, the source BS 502 determines that a point-to-point transfer procedure of X2 be adopted. For example, the source BS 502 determines whether there is an interface X2 between itself and the target BS 503. If there is no interface X2, the S1 point-to-point transfer flow of the related technique will be performed; otherwise, the source BS 502 will still determine if the target cell is an open cell, or if the source cell and the target cell belong to the same CSG. If so, the point-to-point transfer of X2 will be performed, i.e., step 509 will be performed.
    [0065] The S1 point-to-point transfer flow is described above. Furthermore, the source cell and the target cell being located in the same CSG indicates that both the source cell and the target cell are CSG cells, and that they have the same CSG identifier.
    [0066] The source BS 502 can be a HeNB or an eNB. Target BS 503 can also be HeNB or eNB. According to different network configurations, there may or may not be an X2 interface between source BS 502 and target BS 503.
    [0067] Furthermore, in step 508, the source BS 502 can obtain the CSG identifier (ID) and an access mode of the target cell from the UE 501, through the X2 establishment procedure, according to the carrier configuration, and/or through other means. The access mode refers to the type of the target cell, for example, the hybrid or CSG cell. If the CSG ID does not exist, the target cell will be considered an open cell, or the target cell may be explicitly denoted as the open cell. Whether the source cell and the target cell belong to the same CSG can be determined according to the CSG ID of the target cell.
    [0068] The method for obtaining the CSG ID and access mode of the target cell from the UE 501 includes obtaining the CSG ID and access mode from an automatic neighbor relationship (ANR), or from a measurement report sent for point-to-point transfer purposes. Specific implementations are well known, and any specific implementation can be used. In addition, when initially accessing the network, the BS and other partial BSs can perform the X2 interface establishment procedure. The BSs, with which the BS performs an X2 interface establishment procedure, are determined according to the carrier's configuration, and so on. Source BS 502 can obtain the CSG ID and access mode of the target cell with this method.
    [0069] Figure 5b is a schematic diagram illustrating an X2 interface establishment procedure according to a first exemplary embodiment of the present invention.
    [0070] Referring to Fig. 5b, BS1 5000 sends an establishment request message from X2 to BS2 5005 in step 5011. The establishment request message from X2 includes information of service cells belonging to BS1 5000. information includes the CSG ID and a physical cell identifier (PCI) of each of the serving cells, and may also include the access mode of each of the serving cells, etc. to indicate whether the cell is a hybrid cell or a CSG cell. When the access mode of each of the serving cells is the hybrid cell, the establishment request message from X2 includes the access mode to indicate that the cell is the hybrid cell. When the cell is the CSG cell, the establishment request message from X2 does not include the access mode. This method is used to implicitly indicate that the access mode is the CSG type. Alternatively, the access mode is not ported in the establishment request message from X2, but is determined according to the cell's PCI scope.
    [0071] In step 5012, BS2 sends an establishment reply message from X2 to BS1. The X2 setup response message includes information of target cells belonging to BS2 5005. The information includes the CSG ID and PCI of each of the target cells, etc. to indicate whether the cell is a hybrid cell or a CSG cell. When the cell is a hybrid cell, the establishment response message from X2 includes the access mode to indicate that each of the target cells is the hybrid cell. When one of the target cells is the CSG cell, the establishment response message from X2 does not include the access mode. This method is used to implicitly indicate that the access mode is the CSG type. If the access mode is not ported in the X2 establishment response message, the access mode can be determined according to the cell's PCI scope.
    [0072] The BS1 5000 illustrated in Figure 5b can be an eNB or a HeNB. Similarly, the BS2 5005 can be an eNB or a HeNB. As shown in Fig. 5b , source BS 502 obtains the CSG ID and access mode of the target cell, and source BS 502 determines a point-to-point handoff from X2 to UE 501, and proceeds to step 509.
    [0073] In step 509, the source BS 502 sends the point-to-point transfer request message to the target BS 503. If a target cell served by the target BS (503) is a CSG cell, the CSG ID of the target cell can be ported in the point-to-point transfer request message. Also, if the CSG ID of the target is obtained through the X2 interface establishment procedure as shown in Figure 5b, the CSG ID of the target cell cannot be ported. Since the CSG ID of the target cell obtained through this mode is considered to be correct, it is unnecessary to carry out the verification as shown in step 510.
    [0074] In step 510, the target BS 503 checks the CSG ID included in the target cell's point-to-point transfer request message. Target BS 503 verifies that the target cell CSG ID included in the peer-to-peer transfer request message is correct. The target BS 503 compares the target cell's CSG ID included in the peer-to-peer transfer request message with the CSG ID broadcast by the target cell to determine whether the two CSG IDs are the same. If they are not the same, the peer-to-peer transfer from X2 will be rejected, and the CSG ID broadcast by the target cell, i.e., the correct CSG ID of the target cell will be ported in a fail-over message from point to point and sent to source BS 502; otherwise, step 405 will be performed.
    [0075] Step 510 is optional. If a point-to-point transfer request message sent from source BS 502 to target BS 503 in step 509 does not include the target cell CSG ID, execution of step 510 is not necessary.
    [0076] In step 511, target BS 503 sends a point-to-point transfer request acknowledgment message to source BS 502.
    [0077] In step 512, source BS 502 sends a Radio Resource Control Connection (RRC) Reconfiguration message to UE 501.
    [0078] In step 513, UE501 sends an RRC connection reconfiguration completion message to destination BS 503.
    [0079] In step 514, UE 503 sends a path switching request message to the gateway. If the target cell is a CSG cell, the CSG ID of the target cell will be ported in the path switching request message. If the target cell is a CSG cell, the target cell can determine that this point-to-point transfer adopts an X2 point-to-point transfer, that is, under what circumstances an X2 point-to-point transfer is adopted. Therefore, the target cell can determine that both the source cell and the target cell are CSG cells and that they have the same CSG ID. Thus, the path-switch request message may include the same CSG ID indication, indicating that the source and target cell have the same CSG ID. In this situation, the target cell's CSG ID may not be ported. Also, if the source and target cell are HeNBs, the gateway will be the HeNB GW.
    [0080] In step 514b, gateway 504 sends the path-switch request message to MME 505. The content of the path-switch request message in this step is identical to the content of the path-switch request message in step 514a. If gateway 504 is not configured, steps 514a and 514b can be merged into one step, in which target BS 503 sends the path-switch request message to MME 505.
    [0081] In step 515a, the MME 505 sends a bearer update request message to a user plane entity i.e. a service gateway / packet data network gateway (S-GW / PDN GW ) 506. The signaling interactions between the S-GW and the PDN GW are omitted here.
    [0082] According to the received path switching request message, the MME 505 can determine that the target cell to which the UE 501 moves is a CSG cell or an open cell. For example, if the path switching request message includes the CSG ID of the target cell, the target cell of UE 501 can be determined to be the CSG cell. If the target cell's CSG ID is not ported, it can be determined that the target cell is an open cell. If the received path switching request message includes the same CSG ID indication, it can be determined that the target cell and the source cell are located on the same CSG. Therefore, the projected part 50 can know the CSG ID and access mode of the target cell. If the PDN GW has requested the UE User CSG information (determined according to the UE context), under the circumstance that the target cell is the CSG cell, the Carrier Update Request message sent from from MME 505 to the S-GW / GW of PDN 506 will include the user CSG information.
    [0083] User CSG information includes the CSG ID of the target cell, the access mode of the target cell and the indication of participation in CSG of the target cell (the MME itself can make the judgment). The CSG participation indication indicates that the UE is joined to a CSG supported by the target cell, so that the PDN GW can charge the UE 501 according to the corresponding mode. Furthermore, if the PDN GW has requested the location information of the UE 501, the Carrier Modification Request message sent from the MME 505 to the S-GW/GW of the PDN 506 will still include the UE location information. 501, for example, the evolved universal terrestrial radio access network (E-UTRAN) global cell identifier (ECGI) and/or the tracking area identity (TAI), etc. How the PDN GW requests the MME (505) to report UE location information and/or user CSG information is well known and is omitted here for brevity.
    [0084] In step 515b, the PDN S-GW/GW sends a carrier update response message to the MME.
    [0085] In step 516a, MME 505 sends a path switching request acknowledgment message to gateway 504.
    [0086] In step 516b, gateway 504 sends path switching request acknowledgment message to target BS 503. If gateway is not configured, steps 516a and 516b can be merged into one step, in which MME 505 sends the path switching request acknowledgment message to the target BS 503.
    [0087] In step 517, target BS 503 sends a UE context deliberation message to source BS 502.
    [0088] Figure 6 is a flowchart illustrating a point-to-point transfer method according to a second exemplary embodiment of the present invention.
    [0089] Referring to Fig. 6, a source BS 602 makes a point-to-point transfer decision at step 607.
    [0090] In step 608, the source BS 602 determines whether there is an X2 interface between itself and the target BS 603. If there is no X2 interface, the S1 point-to-point transfer process will be performed; otherwise, the source BS 602 still determines whether the target cell is a hybrid cell. If so, the point-to-point transfer of X2 is performed, that is, step 609 is performed. Alternatively, point-to-point transfer of X2 can be adopted when the target cell is a hybrid cell and the source cell and target cell have the same CSG ID. S1 point-to-point transfer is adopted when they have different CSG IDs. The source BS 602 can be a HeNB or an eNB. The target BS (603) can also be the HeNB or the eNB.
    [0091] Also, in step 608, source BS 602 can obtain CSG ID and target cell access mode from UE 601 through X2 interface establishment procedure, according to carrier configuration , and the like. The method for obtaining the CSG ID and access mode is identical to that described above in step 402, and it is unnecessary to describe it again here.
    [0092] In step 609, the source BS 602 sends the point-to-point transfer request message to the target BS. The peer-to-peer transfer request message may include the CSG ID of the target cell, and may further include a member indication to indicate whether UE 601 is a subscribing or non-subscribing member of the target cell.
    [0093] If the target cell's CSG ID is obtained through the X2 interface establishment procedure, the target cell's CSG identifier may be omitted from the point-to-point transfer request message. Furthermore, the peer-to-peer transfer request message may include the membership indication only under certain circumstances, such as when the source cell and target cell are hybrid cells, and have the same CSG ID.
    [0094] In step 610, the target BS 603 verifies the CSG ID received from the target cell. The target BS 603 verifies that the target cell CSG ID carried in the peer-to-peer transfer request message is correct. The target BS 603 compares the target cell CSG ID carried in the peer-to-peer transfer request message with the CSG ID broadcast by the target cell to determine whether the two CSG IDs are the same. If they are not the same, but the target cell is a hybrid cell, this point-to-point transfer will be accepted, ie, step 611 will be performed. Under this circumstance, as an implementation mode, the UE 601 may first be processed as a non-subscribing member. If they are the same CSG ID, step 611 is performed.
    [0095] If the peer-to-peer transfer request message does not include the CSG ID of the target cell, the verification does not need to be performed. Also, if the source cell and target cell are different hybrid cells but have different CSG IDs, the target cell can first process UE 601 as the non-subscribing member after receiving the sent peer-to-peer transfer request message. from the source BS. For the subscribing member and the non-subscribing member, the target BS may provide different quality of service (QoS) services.
    [0096] In step 611, target BS 603 sends a point-to-point transfer request acknowledgment message to source BS 602.
    [0097] If the verification in step 610 fails, the CSG ID broadcast by the target cell, ie the CSG ID of the correct target cell can be ported in the point-to-point transfer request acknowledgment message. Even if the target cell CSG ID received by the target BS 603 from the source BS 602 does not agree with the CSG ID broadcast by the target cell, this point-to-point transfer can also be accepted. Therefore, the target BS 603 sends the correct CSG ID of the target cell to the source BS 602.
    [0098] In step 612, source BS 602 sends an RRC connection reconfiguration message to UE 601.
    [0099] In step 613, UE 601 sends an RRC connection reconfiguration completion message to target BS 603.
    [00100] In step 614, target BS 603 sends a path-switch request message to gateway 604. The path-switch request message includes the CSG ID and access mode of the target cell, to indicate whether whether the target cell is a hybrid cell or a CSG cell. When the access mode is a CSG type, the path-switch request message does not include the access mode, but only includes the CSG ID. This method is adopted to implicitly indicate that the target cell is a CSG cell. The target cell may be of the hybrid type.
    [00101] Also, if the target cell receives a member indication sent from the source BS 602, the target cell can determine that its CSG ID is identical to that of the source cell. Correspondingly, the target BS 603 may include the same CSG ID indication or member indication in the path switching request message. In this case, the CSG ID and access mode may or may not be carried in the path switching request message.
    [00102] In step 614b, the gateway sends the path switching request message to the MME. The content of the path-switched request message in this step is the same as that of the path-switched request message in step 614a. If the gateway is not configured, steps 614a and 614b can be merged into one step, in which the target BS 603 sends the path-switch request message to the MME 605.
    [00103] In step 615, the MME 605 determines whether the UE (601) is a subscribing or non-subscribing member of the target cell. In step 615, the MME 605 determines whether the UE 601 is a subscribing or non-subscribing member only when the target cell is a hybrid cell. The determination can be made using any appropriate technique.
    [00104] In step 616, the MME 605 sends a Carrier Update Request message to an S-GW / PDN GW 606. The signaling interactions between the S-GW and the PDN GW are omitted here.
    [00105] According to the CSG ID and access mode of the target cell carried by the received path switching request message, MME 605 knows the CSG ID and access mode of the target cell. Also, if the path-switch request message does not include the CSG ID and access mode, but does include the same CSG identifier indication, since MME 605 knows the CSG ID and access mode of the source cell, the MME 605 knows the CSG ID and access mode of the target cell. If the path-switch request message does not include the CSG ID, but does include the member indication, the MME 605 may acquiesce because, under this circumstance, the source cell and target cell have the same CSG ID. , and can also know the target cell's CSG ID and access mode. Furthermore, the MME 605 has determined whether the UE 601 is a subscribing or non-subscribing member of the target cell in step 615. Therefore, if the PDN GW has requested the user CSG information determined from the context of the UE 601, the MME will include the user CSG information in the bearer update request message sent to the S-GW / GW of PDN 606.
    [00106] User CSG information includes target cell CSG ID, access mode (i.e. a hybrid cell) and target cell CSG membership indication so that the PDN GW can charge the EU according to the corresponding mode. Furthermore, if the PDN GW has requested the UE location information, the Carrier Modification Request message sent from the MME 605 to the PDN S-GW / GW 606 will still include the user's location information, for eg ECGI and/or TAI, etc. How the PDN GW requests the MME 605 to report UE 601 location information and/or user CSG information can be implemented using any appropriate technique.
    [00107] In step 616b, the PDN S-GW/GW sends a bearer update response message to the MME 601.
    [00108] In step 617a, MME 605 sends a path switching request acknowledgment message to gateway 604. The path switching request acknowledgment message may include the member indication indicating whether the UE 601 is a member subscriber or non-subscriber of the target cell. Furthermore, if the path-switch request message received by the MME 605 in step 609 includes the membership indication, and the result of whether the UE 601 is a subscribing member determined by the MME in step 615 is identical to the membership indication received , the path switching request acknowledgment message in this step cannot include the member indication; otherwise, the path switching request acknowledgment message will include the member indication.
    [00109] The MME 605 may also notify the target BS 603 of the membership indication via the S1 message, such as the UE context modification request message. therefore, the member indication need not be carried in the path-switching request acknowledgment message.
    [00110] In step 617b, gateway 604 sends path-switched request acknowledgment message to target BS 603. Membership indication can be carried in path-switched request acknowledgment message. If the gateway is not configured, steps 617a and 617b can be merged into one step, in which the MME 605 sends the path switching request acknowledgment message to the target BS 603.
    [00111] In step 618, target BS 603 sends a UE context release message to source BS 602.
    [00112] A point-to-point transfer of X2 according to a third exemplary embodiment of the present invention is described below, with respect to Figures 7 and 8.
    [00113] Fig. 7 is a workflow of accessing a network by a UE via a HeNB, when using the connection structure shown in Fig. 4, according to an exemplary embodiment of the invention. Detailed descriptions of steps outside the scope of this example embodiment are omitted.
    [00114] In step 706a, UE 701 sends a non-access layer (NAS) message, for example, an attach message, a service request message, or the like, to a source HeNB 702. In steps 706b and 706c, the source HeNB 702 sends the NAS message received from the UE 701 to the HeNB GW 704 via the access protocol (AP) message of S1, and the HeNB GW 704 sends the AP message of S1 to MME 705. If source HeNB 702 requested to be accessed by UE 701 is CSG-HeNB or hybrid-HeNB, the AP message from S1 will include a CSG identifier of source HeNB cell 704. In step 707, after receiving the message from the NAS, the MME 705 performs the NAS authentication/security process with the UE 701.
    [00115] NAS authentication / security process execution can be implemented using any appropriate implementation. When there is no UE context for UE 701 on the network, when there is no integrity protection for the attach request in steps 706a and 706b, or when integrity authentication has failed, integrity protection will be enabled with authentication and security of NAS and NAS encryption will be performed. Otherwise, the process is optional. When the NAS security algorithm changes, NAS security is established.
    [00116] If the MME 705 supports an unauthenticated international mobile subscriber identification (IMSI) with an emergent attachment, and the attachment type indicated by the UE 501 is emergent, the MME 705 will omit the authentication, and the security establishment process or the MME 705 will continue the attach process when it accepts that authentication has failed.
    [00117] In steps 708a and 708b, the MME 705 sends an initial context establishment request message to the HeNB GW 704, and the HeNB GW 704 sends the initial context establishment request message to the source HeNB 702. The initial context establishment request message includes the MME identifier of the MME 705 to serve the UE 701. The MME identifier may be included in the initial context establishment request message sent by the MME to the HeNB GW 704, it may be included in the initial context establishment request message sent by the HeNB GW 704 to the source HeNB 702, or the MME identifier 705 may be included only in the initial context establishment request message sent by the HeNB GW 704 to the source HeNB 702. Any implementation can be employed.
    [00118] In step 709, upon receipt of the initial context establishment request message, the source HeNB 702 establishes the radio bearer with the UE 701.
    [00119] In steps 710a and 710b, after the radio bearer is established with the UE 701, the source HeNB 702 sends an initial context establishment response message to the HeNB GW 704. The HeNB GW 704 sends the initial context establishment response message to MME 705.
    [00120] So far, the entire workflow for accessing a network by the UE (701) via HeNB according to an exemplary embodiment of the invention has been completed.
    [00121] After the establishment of the radio bearer between the UE 701 and the source HeNB 702 according to the present exemplary embodiment, the point-to-point transfer of X2 can be performed via the HeNBs. An example embodiment is described below with respect to figure 8.
    [00122] Fig. 8 is a workflow of the point-to-point transfer of X2 obtained with a HeNB according to a third exemplary embodiment of the present invention. As shown in Figure 8, detailed descriptions of steps outside the scope of this example embodiment are omitted.
    [00123] In step 807, source HeNB 802 makes a point-to-point transfer decision.
    [00124] In step 808a, the source HeNB 802 sends a point-to-point transfer request message to a target HeNB 803. The point-to-point transfer request message includes an MME identifier of an MME 805 serving the EU 801.
    [00125] In step 808b, target HeNB 803 sends a point-to-point transfer request acknowledgment message to source HeNB 802.
    [00126] In step 809a, source HeNB 802 sends an RRC connection reconfiguration message to UE 801 to request UE 801 to do a point-to-point transfer of X2.
    [00127] In step 809b, after the point-to-point handoff, UE 801 sends RRC connection reconfiguration completion message to target HeNB 803.
    [00128] In step 810a, the target HeNB 803 sends a path-switch request message to the HeNB GW 804, and the HeNB GW 804 sends the path-switch request message to the MME 805. Path switching request includes an MME identifier of the MME 805 serving the UE 801.
    [00129] The path-switch request message may still include a CSG identifier of the target HeNB 803. Furthermore, the path-switch request message may still include an access mode of the target HeNB 803, e.g., hybrid , etc. The access mode value can still include a CSG type, or the existence of a CSG identifier can be used to implicitly demonstrate the CSG type of the target HeNB 803, when there is no access mode. When target HeNB 803 accesses MME 805 without passing through the GW of HeNB 804, the path switching request message is directly sent by target HeNB 803 to MME 805.
    [00130] In step 811a, MME 805 sends a carrier update request message to the S-GW / GW of PDN 806. MME 805 can learn the CSG identifier and access mode of the target cell, according to the CSG identifier and access mode information about the destination cell carried in the received path switching request message. If the target cell is a hybrid, the MME 805 can determine whether the UE 801 is a subscribing member or a non-subscribing member of the target cell, according to the target cell's CSG identifier. PDN requests the user CSG information about the UE (which can be learned in the bearer update request message, which is sent to the S-GW / GW of PDN 806. The user CSG information includes the CSG identifier and the access mode of the target cell, as well as whether the UE 801 is a subscribing member or a non-subscribing member of the target cell, so as to facilitate a subsequent charge performed by the PDN GW to the UE 801 in accordance with a corresponding mode. The MME 805 request to report user CSG information by the PDN GW can be implemented using any known technique.
    [00131] In step 811b and after modifying the UE801 bearer, the S-GW/PDN GW 806 sends a reply modification message to the MME805 bearer.
    [00132] In step 812a, the MME 805 sends a path switching request acknowledgment message to the HeNB GW 805, and the HeNB GW 805 sends the path switching request acknowledgment message to the target HeNB 803 When the target HeNB 803 switches to MME 805 without passing through the GW of HeNB 804, the path switching request acknowledgment message is sent directly by the MME 805 to the target HeNB 803.
    [00133] In step 813, upon receipt of the path switching request acknowledgment message, the target HeNB 803 sends a UE context release message to the source HeNB 802.
    [00134] By now, the entire workflow for performing a point-to-point transfer of X2 via the HeNB according to an exemplary embodiment of the invention is completed.
    [00135] The example modalities illustrated in Figures 7 and 8 are described only in examples in which a point-to-point transfer of X2 is performed between HeNBs. In practical applications, the above point-to-point transfer process can also be applicable to the X2 point-to-point transfer process between an eNB and a HeNB accessing a CN through the HeNB GW. The specific process is as above, which will not be repeated here.
    [00136] In the method for performing a point-to-point transfer of X2 through the HeNB adopted by the third exemplary embodiment of the invention, when the UE accesses a network through the HeNB, the MME or the HeNB GW sends an MME identifier of an MME serving the EU for the HeNB. When performing X2 point-to-point transfer, the HeNB can send the MME identifier to the target eNB/HeNB to which the UE needs to transfer from point-to-point, to allow the target eNB/HeNB to send from successful path switching request message to the MME serving the UE. When the target HeNB accesses the MME through the HeNB GW, the target HeNB sends the MME identifier to the target HeNB GW, to allow the target HeNB GW to successfully send the switch request message route to the MME serving the UE, and to reduce frequent interactions with the CN during a S1 point-to-point transfer process, when a successful X2 point-to-point transfer is guaranteed. Thus, an influence of the point-to-point transfer process on the CN is reduced, and a point-to-point transfer delay is reduced.
    [00137] The foregoing is for exemplary embodiments of the invention only, which is not used to limit the invention. Any modifications, equivalent replacements, improvements, etc. in the spirit and principle of the invention must be covered by the scope of the invention.
    [00138] Figure 9 is a block diagram illustrating a structure of a HeNB/eNB or a BS according to an exemplary embodiment of the present invention.
    [00139] With reference to Figure 9, each HeNB/eNB and BS operates as a source HeNB/eNB and BS or a HeNB/eNB and target BS, and a HeNB/eNB 900 includes a receiver 902, a controller 904 and a transmitter 906. Controller 904 determines a point-to-point transfer of the UE using an X2 interface.
    [00140] For example, when the HeNB/eNB 900 operates as a HeNB/eNB and source BS, in accordance with the first and second embodiments of the present invention, the controller 904 determines a point-to-point transfer of the UE using the X2 interface. If there is an indexing between the source BS and the target BS, and if the target BS does not support a CSG or the target BS supports the same CSG supported by the source BS, controller 904 will determine that it is to perform the point-to-point transfer. point of the UE using the X2 interface, and will obtain the CSG information from the target BS through an X2 interface establishment procedure.
    [00141] Transmitter 906 transmits a point-to-point transfer request message comprising information (CSG) from the target BS to the target BS. Receiver 902 receives a point-to-point transfer request acknowledgment message from the target BS. The CSG information includes an access mode indicating that the target BS is the CSG BS supporting a specific CSG or a hybrid BS supporting the specific CSG and UEs not included in the specific CSG. If the target BS is the CSG BS or the hybrid BS, the CSG information will include a CSG ID of the specific CSG. If the target BS supports the same CSG as the source BS, the CSG information will include an identifier indicating that the target BS supports the same CSG. If the target BS is the hybrid BS, there will be a membership identifier indicating whether the UE is joined to a CSG supported by the hybrid BS.
    [00142] In the X2 interface establishment procedure, the transmitter 906 transmits an X2 base station request message comprising a CSG (ID) and a PCI for each serving cell from the source BS to the target BS, and receiver 902 receives an X2 setup message from the target BS comprising a CSG ID and a PCI for each of the target BS' serving cells.
    [00143] According to the third exemplary embodiment of the present invention, if there is an MME identifier of MME serving the UE from the MME or the BS gateway, transmitter 906 will transmit the point-to-point transfer request message further comprising the MME identifier for the target BS by controller control (904).
    [00144] For example, when the HeNB/eNB and BS 900 operates as a HeNB/eNB and target source BS in accordance with the first and second example embodiments of the present invention, the receiver 902 receives a point transfer request message point comprising a CSG information of a target BS from a source BS.
    [00145] If the CSG information includes a first CSG ID, controller 904 determines whether the first CSG ID and a second CSG ID are the same, and obtains the second CSG ID from the CSG information broadcast to from the target cell. If the first CSG ID and the second CSG ID are the same, the transmitter 906 will transmit a point-to-point transfer request acknowledgment message to the source BS, and the receiver 902 will receive an RRC reconfiguration message at from the EU. Transmitter 906 transmits a path switching request message including the second CSG ID to the MME. If a path switching request acknowledgment message is received by receiver 902 from the MME, transmitter 906 transmits an UL uplink context release message to the source BS.
    [00146] When the HeNB/eNB and BS 900 operates as a HeNB/eNB and BS target source according to the third exemplary embodiment of the present invention, if the controller 904 obtains an MME ID from an MME serving the UE from of the point-to-point transfer request message, transmitter 906 will transmit a path-switch request message comprising the MME ID to the MME corresponding to the MME ID by controller control.
    [00147] Fig. 10 is a block diagram illustrating a structure of an MME according to an exemplary embodiment of the present invention.
    [00148] Referring to Fig. 10, the MME 1000 includes a receiver 1002, a controller 1004, and a transmitter 1006. The receiver 1002 receives a path-switch request message comprising a CSG information of a target BS from the BS target. If the CSG information indicates that the target BS is a CSG BS supporting a specific CSG, transmitter 1006 will transmit a Carrier Update Request message including the CSG information to a user plan entity. If receiver 1002 receives a carrier update response message, transmitter 1006 transmits a path-switching request acknowledgment message to the target BS by controller control (1004). The CSG information from the target BS or the CSG information broadcast from the target BS includes an access mode indicating that the target BS is a CSG BS supporting a specific CSG. If the target BS is the CSG BS or the hybrid BS, the CSG information will include a specific CSG CSG ID, and if the target BS supports the same CSG supported by the source BS, the CSG information will include an identifier which represents that the target BS supports the same CSG.
    [00149] According to an exemplary embodiment of the present invention, the processing burden of the core network can be reduced, and the point-to-point transfer efficiency is improved.
    [00150] The foregoing is for exemplary embodiments of the present invention only. The scope of protection of the present invention, however, is not limited to the above description. Any change or replacement, readily occurring to those skilled in the art, should be covered by the scope of protection of the present invention.
    [00151] While the invention has been shown and described with reference to certain exemplary embodiments thereof, it will be understood by those skilled in the art that various changes in form and detail can be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
    权利要求:
    Claims (8)
    [0001]
    1. Method for a point-to-point transfer of X2 from a user entity, UE, (601) by a source base station, BS, (602), the method comprising: obtaining (608) a first identifier, ID, of closed subscriber group, CSG, of a target BS (603) from an X2 setup response message received from the target BS (603) in an X2 interface setup procedure; determining whether the Target BS (603) is a hybrid BS and if the first CSG ID is identical to a second CSG ID of the source BS (602); determine (608) that it is to perform the point-to-point transfer of X2 between the BS of source (602) and target BS (603) when the target BS (603) is a hybrid BS and the first CSG ID is identical to the second CSG ID; and transmit (609), to the target BS (603), a point-to-point transfer request message including a member indication to indicate whether the UE (601) is a subscriber or non-subscriber member of the CSG, each of source BS (602) and the target BS (603) is a domestic evolved Node B, HeNB.
    [0002]
    2. Method according to claim 1, characterized in that the X2 interface establishment procedure comprises: transmission (5011), to the target BS (603), of an X2 establishment request message including first information about served cells, the first served cell information including the second CSG ID as a CSG ID of a cell served by the source BS (602); and receiving (5012), from the target BS (603), the X2 setup reply message including the second cell served information, the second cell serviced information including the first CSG ID as a CSG ID of cells served by the target BS (603).
    [0003]
    3. Method, according to claim 1, characterized in that it further comprises: receiving (611), from the target BS (603), a message acknowledging a point-to-point transfer request; and transmitting (612) to the UE (601) a radio resource control connection, RRC, reconfiguration message.
    [0004]
    4. Method according to claim 2, characterized in that the first cell information served also includes a physical cell identifier, PCI, for each of the cells served by the source BS (602), and the second information of The served cell further includes a PCI for each of the cells supported by the target BS (603).
    [0005]
    5. Source base station, BS, (602) for a point-to-point transfer of X2 from a user entity, UE, (601), to source BS (602), characterized in that it comprises: an X2 interface configured to receive an X2 setup response message from the source BS (602) in an X2 setup procedure; and a method configured to: obtain (608) a first identifier, closed subscriber group ID, CSG, of the target BS (603) from an X2 setup response message, determine whether the target BS (603) is a hybrid BS and if the first CSG ID is identical to a second CSG ID of the source BS (602), determine (608) that it is to perform the point-to-point transfer from X2 to the UE (601) between the source BS (602) and the target BS (603) to be performed when the target BS (603) is the hybrid BS and the first CSG ID is identical to the second CSG ID; and controlling the X2 interface to transmit (609), to the target BS (603), a point-to-point transfer request message including a member indication to indicate whether the UE (601) is a subscriber or non-subscriber member of the CSG , wherein each of the source BS (602) and the target BS (603) is a domestic evolved Node B, HeNB, and the UE (601) is a member of a CSG cell.
    [0006]
    6. Source BS (602), according to claim 5, characterized in that the process is still configured to perform the X2 interface establishment procedure by:transmission (5011), to the target BS (603), from a X2 setup request message including first served cell information, the first served cell information including the second CSG ID as a CSG ID of a cell served by the source BS (602); and receiving (5012), from the target BS (603), the X2 setup reply message including the second served cell information, the second served cell information including the first CSG ID as a served cell CSG ID by the target BS (603).
    [0007]
    7. Source BS (602), according to claim 5, characterized in that the process is further configured to control the X2 interface for: receiving (611), from the target BS (603), of a message of point-to-point transfer request acknowledgment, and transmission (612) to the UE (601) of a radio resource control connection, RRC, reconfiguration message.
    [0008]
    8. Source BS (602), according to claim 6, characterized in that the first cell information served includes a physical cell identifier, PCI, for each of the cells served by the source BS (602), and the second cell serviced information further includes a PCI for each of the cells supported by the target BS (603).
    类似技术:
    公开号 | 公开日 | 专利标题
    BR112012027750B1|2022-01-18|METHOD FOR A POINT-TO-POINT TRANSFER OF X2 FROM A USER ENTITY AND SOURCE BASE STATION
    US9998973B2|2018-06-12|Communicating radio resource configuration information
    CA2927274C|2017-09-26|Method and apparatus to enable multiple wireless connections
    US9769709B2|2017-09-19|Handover method, communication device and communication system
    US9237442B2|2016-01-12|Method and system for positioning mobile station in handover procedure
    CN104185227B|2020-05-15|CSG access control method and system under dual-connection architecture
    JP2015534391A|2015-11-26|Method and apparatus for performing handover in a wireless communication system
    JPWO2016167212A1|2018-02-08|Base station and communication control method
    US10506651B2|2019-12-10|Mobility signalling for user equipment using dual connectivity
    WO2016188360A1|2016-12-01|Switching method and system of dual-connection system supporting closed subscriber group
    同族专利:
    公开号 | 公开日
    CA2797422A1|2011-11-03|
    EP2564633A2|2013-03-06|
    JP5605968B2|2014-10-15|
    EP2564633B1|2020-01-15|
    JP5795409B2|2015-10-14|
    KR20110120225A|2011-11-03|
    WO2011136534A3|2012-03-01|
    KR20170119309A|2017-10-26|
    CA2797422C|2018-05-08|
    RU2523702C1|2014-07-20|
    KR101784264B1|2017-10-11|
    US20170164243A1|2017-06-08|
    US20180049074A1|2018-02-15|
    US20210306915A1|2021-09-30|
    JP6068583B2|2017-01-25|
    MY170348A|2019-07-22|
    JP2015195631A|2015-11-05|
    US9801102B2|2017-10-24|
    EP2564633A4|2016-09-14|
    US9820195B2|2017-11-14|
    BR112012027750A2|2017-03-14|
    EP3657858B1|2021-04-21|
    JP2013526209A|2013-06-20|
    EP3657858A1|2020-05-27|
    JP2014200105A|2014-10-23|
    ZA201208754B|2014-01-29|
    KR101899354B1|2018-09-17|
    RU2012150921A|2014-06-10|
    WO2011136534A2|2011-11-03|
    MX2012012599A|2013-01-22|
    US20110269465A1|2011-11-03|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JP2003087842A|2001-09-13|2003-03-20|Nec Corp|Hand-over system in code division multiple access communication system and its system|
    EP1451974B1|2001-12-03|2009-08-05|Nokia Corporation|Policy based mechanisms for selecting access routers and mobile context|
    US7486233B2|2003-09-03|2009-02-03|Telefonaktiebolaget L M Ericsson |Method and system of positioning|
    KR100818132B1|2003-10-24|2008-04-01|퀄컴 인코포레이티드|Handoff between a wireless local area network and a cellular communication system|
    CN100426815C|2004-09-08|2008-10-15|华为技术有限公司|Resource and admission control subsystem and method in NGN|
    JP4848890B2|2006-08-23|2011-12-28|日本電気株式会社|Mobile communication system and method, and base station used therefor|
    US20080076425A1|2006-09-22|2008-03-27|Amit Khetawat|Method and apparatus for resource management|
    KR100809261B1|2006-09-29|2008-03-03|한국전자통신연구원|High speed plc network-ethernet bridge system supporting qos|
    CN101606421A|2007-02-12|2009-12-16|诺基亚公司|Device, the method and computer program product of the signaling of cell status information between Node B are provided|
    JP4838181B2|2007-03-19|2011-12-14|株式会社エヌ・ティ・ティ・ドコモ|HANDOVER METHOD AND RADIO BASE STATION|
    US8072953B2|2007-04-24|2011-12-06|Interdigital Technology Corporation|Wireless communication method and apparatus for performing home Node-B identification and access restriction|
    CN101299876B|2007-04-30|2011-07-06|华为技术有限公司|Synchronisation method, communication switching method, wireless network and node|
    US20080268842A1|2007-04-30|2008-10-30|Christian Herrero-Veron|System and method for utilizing a temporary user identity in a telecommunications system|
    US8265033B2|2007-08-13|2012-09-11|Telefonakatiebolaget Lm Ericsson |Closed subscriber group cell handover|
    GB2453315A|2007-08-15|2009-04-08|Nec Corp|Connection Identifier in a telecommunications network|
    JP5116509B2|2007-08-31|2013-01-09|パナソニック株式会社|Wireless communication terminal device, wireless communication base station device, and wireless communication method|
    KR101375474B1|2007-09-13|2014-03-20|삼성전자주식회사|Apparatus and method for communicating using internet protocol|
    KR100943078B1|2007-12-14|2010-02-18|한국전자통신연구원|A bearer control and management method in the IP-based evolved UMTS Network|
    JP5015856B2|2008-02-01|2012-08-29|パナソニック株式会社|Base station, radio communication system, and handover method|
    US8179903B2|2008-03-12|2012-05-15|Qualcomm Incorporated|Providing multiple levels of service for wireless communication devices communicating with a small coverage access point|
    CN101547406B|2008-03-25|2012-05-23|中兴通讯股份有限公司|Access control method for user equipment entering closed subscriber group cell|
    JP5173556B2|2008-04-24|2013-04-03|株式会社日立製作所|Wireless communication system and base station accommodation server|
    US8626162B2|2008-06-06|2014-01-07|Qualcomm Incorporated|Registration and access control in femto cell deployments|
    US20100008293A1|2008-07-09|2010-01-14|Qualcomm Incorporated|X2 interfaces for access point base stations in self-organizing networks |
    EP2148537B1|2008-07-22|2016-05-04|Fujitsu Limited|Handovers in wireless communication systems|
    CN101635962B|2008-07-24|2012-01-04|电信科学技术研究院|Method for acquiring load situation during user-equipment switch, and MME|
    JP5035191B2|2008-09-18|2012-09-26|富士通株式会社|Base station apparatus, communication control system, communication control method, inter-station control method, and inter-station control program|
    KR101472749B1|2008-09-25|2014-12-16|삼성전자주식회사|METHOD AND APPARATUS FOR UE ADMISSION CONTROL IN HOME eNB|
    WO2010047647A1|2008-10-20|2010-04-29|Telefonaktiebolaget L M Ericsson |Use of a cell id and mask to retrieve home node b gateway address|
    EP2361484B1|2008-11-21|2013-07-17|Telefonaktiebolaget L M Ericsson |Gateway configured to provide a handover, converting and routing function|
    CN101765094B|2008-12-22|2012-07-04|华为技术有限公司|Method for realizing switching of user equipment as well as device and system therefor|
    US8942204B2|2008-12-23|2015-01-27|Qualcomm Incorporated|Access point handover control based on closed subscriber group subscription information|
    KR101571730B1|2009-01-09|2015-11-25|엘지전자 주식회사|Method of transmission csg id in a wireless communication system|
    CN101790221B|2009-01-22|2015-05-06|中兴通讯股份有限公司|Method and system for controlling access of network during switching of Home Node B|
    US8520594B2|2009-01-30|2013-08-27|Qualcomm Incorporated|Selectively including allowed closed subscriber group list in page message|
    US20120069737A1|2009-03-27|2012-03-22|Telefonaktiebolaget L M Ericsson |Overload avoidance with home node b gateway in lte|
    GB2471988A|2009-04-27|2011-01-26|Nec Corp|Communication System comprising Home Base Station and associated Closed Subscriber Group|
    US8270977B2|2009-06-19|2012-09-18|Futurewei Technologies, Inc.|System and method for temporarily reconfiguring a communications system to provide selected services|
    JP4870201B2|2009-10-14|2012-02-08|株式会社エヌ・ティ・ティ・ドコモ|Mobile communication method and radio base station|
    US20110116469A1|2009-11-16|2011-05-19|Motorola, Inc.|Local internet protocol access/selected internet protocol traffic offload packet encapsulation to support seamless mobility|
    US20110268085A1|2009-11-19|2011-11-03|Qualcomm Incorporated|Lte forward handover|
    JP4790057B2|2009-12-04|2011-10-12|株式会社エヌ・ティ・ティ・ドコモ|Mobile communication method and switching center|
    US8855642B2|2009-12-17|2014-10-07|Nokia Siemens Networks Oy|Neighbour cell list in a private network|
    US20110261747A1|2010-04-02|2011-10-27|Interdigital Patent Holdings, Inc.|Method and apparatus for supporting communication via a relay node|
    US20110249642A1|2010-04-13|2011-10-13|Qualcomm Incorporated|Adaptive resource negotiation between base stations for enhanced interference coordination|
    KR101784264B1|2010-04-28|2017-10-11|삼성전자주식회사|Handover method and apparatus in mobile communication system|
    US8600387B2|2010-04-29|2013-12-03|Qualcomm Incorporated|Method and apparatus for performing intra closed subscriber group handover|
    WO2011160059A1|2010-06-18|2011-12-22|Interdigital Patent Holdings, Inc.|Distributed architecture for security keys derivation in support of non-involved core network handover|
    US9392420B2|2010-12-17|2016-07-12|Telefonaktiebolaget L M Ericsson |Closed subscriber group handling for supporting network sharing of home base stations|
    US9497102B2|2011-12-06|2016-11-15|Qualcomm Incorporated|Systems and methods for machine to machine device control and triggering|
    EP3301959A1|2012-03-16|2018-04-04|Kyocera Corporation|Communication control method, processor, and base station|
    IN2015KN00328A|2012-10-04|2015-07-10|Lg Electronics Inc|
    WO2016175690A1|2015-04-30|2016-11-03|Telefonaktiebolaget Lm Ericsson |Relaxed measurement reporting with control plane dual connectivity|
    US20190150118A1|2017-11-10|2019-05-16|Qualcomm Incorporated|Virtual resource block to physical resource block mapping in new radio|US20060235683A1|2005-04-13|2006-10-19|Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V.|Lossless encoding of information with guaranteed maximum bitrate|
    CN101400071A|2007-09-29|2009-04-01|北京三星通信技术研究有限公司|Method for configuring MME|
    US8520594B2|2009-01-30|2013-08-27|Qualcomm Incorporated|Selectively including allowed closed subscriber group list in page message|
    US8731551B2|2009-01-30|2014-05-20|Qualcomm Incorporated|CSG membership indication|
    US20100197307A1|2009-01-30|2010-08-05|Qualcomm Incorporated|Access control for access terminals|
    ES2670409T3|2009-08-19|2018-05-30|Deutsche Telekom Ag|Mobile radio access network, mobility control unit, method for charging in a mobile radio access network and program|
    JP4870201B2|2009-10-14|2012-02-08|株式会社エヌ・ティ・ティ・ドコモ|Mobile communication method and radio base station|
    KR101784264B1|2010-04-28|2017-10-11|삼성전자주식회사|Handover method and apparatus in mobile communication system|
    CN102457915B|2010-10-26|2016-03-02|株式会社Ntt都科摩|Manage the method for X2 interface, changing method, disturbance restraining method and device|
    GB201018633D0|2010-11-04|2010-12-22|Nec Corp|Communication system|
    US9125118B2|2010-12-03|2015-09-01|Lg Electronics Inc.|Method and apparatus for performing access control in wireless communication system|
    US8681740B2|2010-12-21|2014-03-25|Tektronix, Inc.|LTE network call correlation during User Equipment mobility|
    US20120185569A1|2011-01-14|2012-07-19|Qualcomm Incorporated|Techniques for dynamic task processing in a wireless communication system|
    CN102186157B|2011-05-17|2015-06-17|电信科学技术研究院|Method and equipment for transmitting CSGinformation|
    CN103597879A|2011-06-16|2014-02-19|瑞典爱立信有限公司|SGSN-MME centric handover|
    KR101554242B1|2011-06-17|2015-09-18|후아웨이 테크놀러지 컴퍼니 리미티드|Address processing method, gateway device, and ap|
    KR101606253B1|2011-07-14|2016-03-24|엘지전자 주식회사|Method and apparatus for performing membership verification or access control in wireless communication system|
    WO2013012219A1|2011-07-18|2013-01-24|Lg Electronics Inc.|Method and apparatus for performing closed subscriber group grouping in wireless communication system|
    JP5665680B2|2011-07-22|2015-02-04|シャープ株式会社|COMMUNICATION SYSTEM, COMMUNICATION METHOD, BASE STATION, AND MANAGEMENT DEVICE|
    US9686396B2|2011-08-12|2017-06-20|Google Technology Holdings LLC|Method and apparatus for media property of characteristic control in a media system|
    US8699461B2|2011-08-19|2014-04-15|Hitachi, Ltd.|Optimized home evolved NodeBhandover in an LTE network|
    WO2013028114A1|2011-08-24|2013-02-28|Telefonaktiebolaget L M Ericsson |A gateway device for handling ue context and a method thereof|
    US9402264B2|2011-09-30|2016-07-26|Intel Corporation|Methods to transport internet traffic over multiple wireless networks simultaneously|
    WO2013086410A2|2011-12-08|2013-06-13|Interdigital Patent Holdings, Inc.|High-rate dual-band cellular communications|
    CN103428768B|2012-05-16|2016-12-14|华为技术有限公司|A kind of cut-in method, base station, access point and subscriber equipment|
    EP2704484B1|2012-09-03|2021-01-20|Mitsubishi Electric R&D Centre Europe B.V.|Method for performing a handover using an authorization ticket|
    CN103686673B|2012-09-21|2019-06-04|北京三星通信技术研究有限公司|A method of support instruction turkey to give source access system|
    JP5997995B2|2012-09-26|2016-09-28|株式会社Ｎｔｔドコモ|Wireless base station|
    CN111225427A|2012-09-28|2020-06-02|北京三星通信技术研究有限公司|Method for establishing X2 through gateway|
    CN103716787B|2012-09-29|2020-06-23|北京三星通信技术研究有限公司|Method for supporting verification of home base station|
    CN111343679A|2012-11-02|2020-06-26|北京三星通信技术研究有限公司|Method for automatically adjusting mobile parameters|
    EP2918107A4|2012-11-09|2016-07-06|Nokia Technologies Oy|Method, apparatus, and computer program product for perform handover in a heterogenous network|
    ES2703055T3|2012-12-28|2019-03-06|Nec Corp|Intercell movement in small cell improvement scenario|
    CN103974453A|2013-02-03|2014-08-06|中兴通讯股份有限公司|Method for establishing X2 port, base station, information processing method and gateway|
    CN110087272B|2013-02-22|2021-10-08|三星电子株式会社|Method and system for providing simultaneous connections between multiple E-node bs and user equipment|
    CN104066133B|2013-03-21|2019-10-22|北京三星通信技术研究有限公司|A method of supporting switching|
    US20140335861A1|2013-05-08|2014-11-13|Nokia Siemens Networks Oy|Methods and Apparatus for Handover Management|
    CN104378843B|2013-08-15|2020-02-14|北京三星通信技术研究有限公司|Method for supporting bearer establishment, base station and mobility management entity|
    CN111182600B|2014-01-28|2021-09-07|北京三星通信技术研究有限公司|Method and apparatus for supporting UE mobility in wireless communication system|
    US10638376B2|2014-03-04|2020-04-28|Nokia Solutions And Networks Management International Gmbh|RAN based gateway functions|
    KR101906697B1|2014-03-28|2018-10-10|노키아 솔루션스 앤드 네트웍스 오와이|Method and apparatus for closed subscriber group information transmission|
    CN104185227B|2014-04-14|2020-05-15|中兴通讯股份有限公司|CSG access control method and system under dual-connection architecture|
    US9788039B2|2014-06-23|2017-10-10|Google Inc.|Camera system API for third-party integrations|
    US20150370272A1|2014-06-23|2015-12-24|Google Inc.|Intelligent configuration of a smart environment based on arrival time|
    CN104144456B|2014-07-24|2017-12-08|大唐移动通信设备有限公司|A kind of base station switch method and device|
    EP3219137B1|2014-11-11|2020-06-03|Deutsche Telekom AG|Method for improved communication between network nodes of a mobile communication network, mobile communication network, program and computer program product|
    CN106604356B|2015-10-15|2020-02-14|华为终端有限公司|Wireless communication access method, device, processor and wireless terminal|
    JP2017118250A|2015-12-22|2017-06-29|ソニー株式会社|Communication device and communication method|
    CN110995773B|2016-05-24|2021-01-05|华为技术有限公司|QoS control method and device|
    CN108702810B|2016-07-29|2021-09-14|Lg 电子株式会社|Method and arrangement for a first radio access network node|
    GB2552844A|2016-08-12|2018-02-14|Nec Corp|Communication system|
    EP3632176A1|2017-05-23|2020-04-08|Telefonaktiebolaget LM Ericsson |Core network node and method therein for obtaining a decision of a cn/ ran endpoint pair for user plane session in a radio communications network|
    CN109429219B|2017-07-20|2021-04-09|华为技术有限公司|Switching method, device and system|
    BR112020007333B1|2017-10-13|2021-05-25|Nokia Technologies Oy|non-transient computer readable methods, devices and storage media related to reflective quality of service capability|
    WO2019090770A1|2017-11-13|2019-05-16|Oppo广东移动通信有限公司|Method for determining core network type during handover process, terminal device, access network device, and core network device|
    CN111328114A|2018-12-14|2020-06-23|电信科学技术研究院有限公司|Switching control method and equipment|
    US11265958B2|2019-04-12|2022-03-01|Ofinno, Llc|Access information for node configuration|
    法律状态:
    2018-12-26| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-04-28| B15K| Others concerning applications: alteration of classification|Free format text: AS CLASSIFICACOES ANTERIORES ERAM: H04W 36/08 , H04W 36/38 , H04W 36/32 , H04W 92/20 Ipc: H04W 36/00 (2009.01), H04W 36/08 (2009.01), H04W 3 |
    2020-04-28| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-11-30| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2022-01-18| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 26/04/2011, OBSERVADAS AS CONDICOES LEGAIS. PATENTE CONCEDIDA CONFORME ADI 5.529/DF, QUE DETERMINA A ALTERACAO DO PRAZO DE CONCESSAO. |
    优先权:
    申请号 | 申请日 | 专利标题
    CN2010101599534A|CN102238656A|2010-04-28|2010-04-28|Switching method for mobile communication system|
    CN201010159953.4|2010-04-28|
    CN201010168721|2010-04-29|
    CN201010168721.5|2010-04-29|
    PCT/KR2011/003016|WO2011136534A2|2010-04-28|2011-04-26|A handover method and apparatus in a mobile communication system|
    [返回顶部]