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    • 专利摘要:
    method and device for controlling the energy savings of inter-rat base stations the present invention describes a method for controlling the energy savings of a base station between radio access technologies (inter-rat), which includes: obtaining information on the state of an outer system cell, driving an energy-saving control decision according to the state information of the outer system cell and the state information of a local system cell covering the same area, or a neighboring area, than the outer system cell, and waking the outer system cell or the local system cell, or making the outer system cell or the local system cell go to sleep, according to a result of the decision. The present invention also describes an apparatus for the energy saving control of an inter-rat base station, which includes: an acquisition unit, configured to obtain information about the status of a cell of the external system; a decision unit configured to drive an energy-saving control decision in accordance with the state information of the cell from the outside system and information about the state of a cell in the local system that covers the same area, or a neighboring area, that the cell of the outer system; and an execution unit configured to wake up the outer system cell or the local system cell or else to hibernate the outer system cell or the local system cell in accordance with the decision result of the decision unit. the present invention implements base station energy savings as far as possible.
    公开号:BR112012001290B1
    申请号:R112012001290-8
    申请日:2010-07-23
    公开日:2021-06-22
    发明作者:Jie Zhao；Yin Gao
    申请人:Zte Corporation；
    IPC主号:
    专利说明:

    Technical Field
    [001] The present invention relates to base station energy saving control technology, and specifically to a method and apparatus for inter-RAT base station energy saving control. Background of the Invention
    [002] Currently the telecommunications industry is gradually entering a stage of low economic performance and telecommunications operators are paying increasing attention to the problem of cost cutting such as energy saving etc., while seeking to expand market share and increase profits by business types. The base station, as it is a major energy consumer of the operator, is a key element of the network to save energy. On the other hand, an average household consumer is paying increasing attention to the problem associated with the existence of electromagnetic wave radiation pollution at the base station in the operational state.
    [003] The technical scheme for implementing the base station energy saving is now done mainly through the adoption of new energy saving and environmental protection devices and through the modification of the heat dissipation material, from so as to reduce the power consumption of the base station while reducing the power consumption generated by heat dissipation. However, the following problems exist in the technology: the adoption of this type of device increases the base station manufacturing cost, and a number of base stations that do not adopt this type of device still cannot achieve the purpose of energy saving.
    [004] The self-organizing network (SON) is a key objective of the long term evolution (LTE) radio access network (RAN). SON functions include auto-configuration and auto-optimization etc.
    [005] Due to a number of mature networks, such as 2G, 3G, etc., that exist in operators, it is relatively common for several formats to coexist at the same time when operating in a network.
    [006] Therefore, energy savings between radio access technologies (RAT) constitutes an important aspect of base station energy savings.
    [007] DE102007057607A1 describes a method for operating a mobile communication network with multiple power levels.
    [008] At the moment there is no technical scheme for energy saving of the base station based on inter-RAT. The problem of saving the energy of the base station in the network that spans multiple systems has not yet received sufficient attention. Content of the Invention
    [009] Based on the above, the main objective of the present invention is to propose a method and an apparatus for controlling the energy savings of an inter-RAT base station, which can effectively implement the energy savings of the inter-RAT base station. -RAT without affecting user access to the system.
    [010] To achieve the above objective, the technical scheme of the present invention is implemented as follows.
    [011] A method for energy saving control of an inter-RAT base station comprises: obtaining information about the state of an outside system cell, making an energy saving control decision according to the state information of the outer system cell and with the information about the status of a local system cell that covers the same area or a neighboring area with the outer system cell and wake up the outer system cell or the local system cell or cause the outside system cell or the local system cell goes to sleep according to a decision result.
    [012] Preferably, obtaining the information on the status of the external system cell comprises: the sending by the local system of a message requesting information on the inter-RAT cell to the external system and obtaining the information on the status of the outside system cell of an information response message received from the outside system inter-RAT cell.
    [013] Preferably, the inter-RAT cell information request message and the inter-RAT cell information response message are newly determined dedicated messages. or else that the inter-RAT cell information request message and the inter-RAT cell information response message are carried by a direct information transfer message (eNB DIRECT INFORMATION TRANSFER) from the base station and by a direct mobility management entity (MME) information transfer message (DIRECT MME INFORMATION TRANSFER) between the base station and MME respectively, or else driven by a base station configuration transfer message (CONFIGURATION TRANSFER DE eNB) and an MME configuration transfer message (MME CONFIGURATION TRANSFER), respectively; or else that the inter-RAT cell wake-up request message and the inter-RAT cell wake-up response message are carried by a direct information transfer message (DIRECT INFORMATION TRANSFER) between a base station controller and a network of transmission.
    [014] Preferably, obtaining the status information of the outer system cell comprises: extracting from the outer system cell the status information after an inter-RAT cell information update message has been received sent by the outside system.
    [015] Preferably, the inter-RAT cell information update message is a newly determined dedicated message respectively; or else, that the inter-RAT cell information update message is carried by a DIRECT MME INFORMATION TRANSFER message or by an MME CONFIGURATION TRANSFER message between the base station and the MME; or else, that the inter-RAT cell information update message is carried by a DIRECT TRANSFER OF INFORMATION message between a base station controller and a transmission network.
    [016] Preferably, the information about the state of the cell comprises the load situation of the cell, whether it is in a state of energy saving and in a state of energy saving that corresponds to a certain period of time.
    [017] Preferably, the realization of the time-saving control decision comprises: the decision that the local system cell enters a sleep state when it is determined that the local system cell is in a time period of hibernation, the load of the outdoor system cell that covers the same area, or the neighboring area, as the local system cell is not overloaded and the outdoor system cell is not in the power-saving state; or the decision to wake up the outer system cell when it is determined that the outer system cell covering the same area, or the neighboring area, that the local system cell is overloaded and the local system cell is in the state from hibernation.
    [018] Preferably, the awakening of the outer system cell according to the result of the decision comprises: the sending by the local system to the outer system of a message requesting the inter-RAT cell to wake up, determining that the outer system cell is awakening from a received outer system inter-RAT cell wake-up response message, and obtaining the information about the state of the outer system cell.
    [019] Preferably, the interRAT cell wake-up request message and the inter-RAT cell wake-up response message are newly determined dedicated messages respectively; or else that the inter-RAT cell wake-up request message and the inter-RAT cell wake-up response message are carried by a DIRECT TRANSFER OF eNB INFORMATION message and a DIRECT TRANSFER OF MME INFORMATION message between the base station and the MME respectively, or driven by an eNB SET DOWN message and a MME SET DOWN message, respectively; or else that the inter-RAT cell information request message and the inter-RAT cell information response message are carried by a DIRECT TRANSFER OF INFORMATION message between a base station controller and a transmission network.
    [020] An apparatus for the energy saving control of an inter-RAT base station comprises: an acquisition unit, configured to obtain information about the status of a cell of the external system; a decision unit, configured to make an energy-saving control decision according to the state information of the cell of the outside system and the state information of a cell of the local system that covers the same area, or the neighboring area , that the outer system cell; and an execution unit, configured to wake up the outer system cell or the local system cell or to hibernate the outer system cell or the local system cell in accordance with a decision result of a decision unit.
    [021] Preferably, the obtaining unit comprises: a sender module, configured to send an inter-RAT cell information request message to the outside system; a receiver module, configured to receive an inter-RAT cell information response message. outdoor system RAT; and a fetching module configured to obtain the cell status information from the outside system.
    [022] Preferably, the inter-RAT cell information request message and the inter-RAT cell information response message are newly determined dedicated messages; or else that the inter-RAT cell information request message and the inter-RAT cell information response message are carried by a DIRECT TRANSFER OF eNB INFORMATION message and by a DIRECT TRANSFER OF MME INFORMATION (eNB entity) message. mobility management) between the base station and the MME respectively, or conducted by an eNB SETUP TRANSFER message and an MME SETUP TRANSFER message, respectively; or else that the inter-RAT cell information request message and the inter-RAT cell information response message are carried by a DIRECT TRANSFER OF INFORMATION message between a base station controller and a transmission network.
    [023] Preferably, the obtaining unit comprises: a receiver module, configured to receive an inter-RAT cell information update message sent by an outside system; and and an acquisition module, configured to obtain cell status information from the outside system.
    [024] Preferably, the inter-RAT cell information update message is newly determined dedicated message, respectively; or else the inter-RAT cell information update message is carried by a DIRECT MME INFORMATION TRANSFER message or by an MME CONFIGURATION TRANSFER message between the base station and the MME; or else the inter-RAT cell information update message is carried by a DIRECT TRANSFER OF INFORMATION message between a base station controller and the broadcast network.
    [025] Preferably, the cell state information comprises the load situation of the cell, whether it is in a power-saving state and whether a power-saving state corresponds to a set period of time.
    [026] Preferably, the decision unit executes the energy-saving control decision and understands: deciding that the local system cell enters a sleep state when it is determined that the local system cell is in a period of hibernation time, decide that the load of the outdoor system cell covering the same area, or the neighboring area, that the local system cell is not overloaded, and that the outdoor system cell is not in the power-saving state ; or decide to wake up the outer system cell when it is determined that the load of the local system cell is overloaded and the outer system cell covering the same area, or the neighboring area, as the local system cell is in sleep state ; or decide to wake up the local system cell when it is determined that the load of the outer system cell covering the same area, or the neighboring area, that the local system cell is overloaded and the local system cell is in sleep state .
    [027] Preferably, the execution unit comprises: a sender module, configured to send an inter-RAT cell wake-up request message to the outside system; a receiver module configured to receive an inter-RAT cell wake-up response message from the outside system; and a determination and acquisition module configured to determine that the outer system cell is awake and to obtain information about the status of the outer system cell.
    [028] Preferably, the interRAT cell wake-up request message and the inter-RAT cell wake-up response message are newly determined dedicated messages respectively; or else that the inter-RAT cell wake-up request message and the inter-RAT cell wake-up response message are carried by an eNB DIRECT INFORMATION TRANSFER message and by a MME DIRECT INFORMATION TRANSFER message between the base station and to MME respectively, or driven by an eNB CONFIGURATION TRANSFER message and a MME CONFIGURATION TRANSFER message, respectively. or else that the inter-RAT cell wake-up request message and the inter-RAT cell wake-up response message are carried by a DIRECT TRANSFER OF INFORMATION message between a base station controller and a transmission network.
    [029] The present invention performs the base station energy saving control decision according to the information about the state of the cell in a local system and by obtaining the information about the state of the cell in an external system and implements that the base station cell is awake or has entered a sleep state by the corresponding power saving control indication. In this case, the cell state information of the outside system is obtained through the inter-RAT cell information request message and the newly determined inter-RAT cell information response message, or the information indication information. on the status of the cell of the external system is conducted and obtained through the messages existing between the base station and the mobility management entity (MME), thus obtaining the information on the status of the cell of the external system, being able to obtain the information about the state of the system cell is also implemented through interactive messages between a base station controller and a transmission network. The present invention will control the cell to go into sleep state when it is determined that the cell should go into sleep state and to wake up the corresponding cell when there are more access users, thus implementing base station energy savings as the possible, the implementation being simple and practical. Brief Description of Drawings
    [030] Figure 1 is a flowchart of a method for energy saving control of an inter-RAT base station according to a first embodiment of the present invention; Figure 2 is a flowchart of a method for controlling the energy savings of an inter-RAT base station in accordance with a second embodiment of the present invention; Figure 3 is a flowchart of an inter-RAT base station power saving control method in accordance with a third embodiment of the present invention; Figure 4 is a diagram of the structure of an apparatus for energy saving control of an inter-RAT base station of the present invention; Figure 5 is a diagram of the structure of an acquisition unit of the present invention; Figure 6 is another diagram of the structure of an acquisition unit of the present invention; and Figure 7 is a diagram of the structure of an embodiment unit of the present invention. Preferred Modalities of the Present Invention
    [031] The basic idea of the present invention is: to carry out a base station energy saving control decision according to the information about the state of the cell in a local system and by obtaining the information about the state of the cell in an outside system, and an implementation that the base station cell is awake or in sleep state by indication of the corresponding power saving control. In this case, the information about the state of the cell from the outside system is obtained through the inter-RAT cell information request message and the newly determined inter-RAT cell information response message, or the information indicating the information about the state of the cell of the outer system is conducted and obtained through the messages existing between the base station and a mobility management entity (MME), thus obtaining the information about the state of the cell of the outer system; obtaining information about the state of the system cell can also be implemented through interactive messages between a base station controller and a transmission network. The present invention will control the cell to make it go into sleep state when it is determined that the cell should go into sleep state and to wake up the corresponding cell when there is a greater number of access users, thus implementing the energy saving of the base station as far as possible, implementation being simple and practical.
    [032] To clarify the objective, the technical scheme and the advantages of the present invention, the present invention will be described in detail with reference to the attached drawings and in combination with the following embodiments. Mode 1:
    [033] In this mode, the inter-RAT power saving control decision algorithm is comprehensively decided according to the current time period, the power saving state of the local system cell, the load situation and the energy-saving state of the cell of the outside system; the inter-RAT cell information request message (INTER-RAT CELL INFORMATION REQUEST) is used to make the inter-RAT cell information request; the inter-RAT cell information response message (INTER-RAT CELL INFORMATION RESPONSE) is used to demonstrate that the process is successful; the inter-RAT cell information failure message (INTER-RAT CELL INFORMATION FAILURE) is used to demonstrate that the process failed; the interRAT cell information update message (INTER-RAT CELL INFORMATION UPDATE) is used to demonstrate that the inter-RAT cell information is up to date; the inter-RAT power saving control indication message (INTER-RAT ENERGY SAVING INDICATION) is used to drive the inter-RAT power saving control indication; the inter-RAT power saving control response message (INTER-RAT ENERGY SAVING RESPONSE) is used to demonstrate that the process was successful; the inter-RAT power saving control fault message (INTER-RAT ENERGY SAVING FAILURE) to demonstrate that the process has failed. It should be noted that all messages cited above are newly determined message elements to implement the technical scheme of the present invention, and the message formats of the above messages are not limited as long as they include the corresponding information above.
    [034] Figure 1 is a flowchart of a method for controlling the energy savings of an inter-RAT base station according to a first embodiment of the present invention. As shown in Figure 1, the method for inter-RAT base station energy saving control in this mode includes the following steps: Step 101, get the inter-RAT cell information: the state information such as the state of power saving (if it is in power saving state) and the load situation etc.; RAT1 initiates the INTER-RAT CELL INFORMATION REQUEST message to RAT2 to request the inter-RAT cell information. Step 102, if the process was successful, RAT2 sends the INTER-RAT CELL INFORMATION RESPONSE message to RAT1 to convey the requested cell information: the state information, such as about the power saving state (if whether or not it is in energy saving state) and the load situation etc.; and if the process fails, RAT2 sends the INTER-RAT CELL INFORMATION FAIL message to RAT1. Step 103, after the power saving state of the RAT1 cell has changed, INTER-RAT CELL INFORMATION UPDATE is sent to transfer the power saving state of the local system cell to the outer system RAT2. Step 104, after RAT2 receives the INTER-RAT CELL INFORMATION UPDATE, the RAT1 cell information (cell energy saving state etc.) is updated and stored. Step 105, RAT1 periodically conducts the energy-saving control decision and the energy-saving control decision is comprehensively conducted according to the time period, the energy-saving state of the local system cell, the situation load and energy-saving state of the cell of the outside system; the conditions of entering the power-saving state are, for example, as follows: (1) that the cell enters the sleep state in the time period of 22:00~7:00 every day, while recovering the operational state at other time periods; (2) that the cell load of the outside system is not overloaded; (3) that the cell of the outdoor system is not in the energy saving state. When RAT1 decides that all of the above conditions are satisfied, it causes the local system cell to enter the power-saving state: conducting the power-saving process of hibernating the local system cell, i.e., making the system cell place to sleep and reducing the pilot frequency channel power of the cell conductors to 0 (zero) or turning off all conductors to enter the power saving state. Step 106, RAT1 performs the energy-saving control decision periodically, and the energy-saving control decision is comprehensively conducted according to the current time period, the energy-saving state of the local system cell, the load status and energy-saving status of the cell of the outside system; and when RAT1 decides that the conditions for waking up the local system cell are satisfied, the process of recovering the wake state of the local system cell is conducted, when it is determined that the outer system cell, for example, which covers the In the same area, or the neighboring area, that the local system cell is overloaded and the local system cell is in sleep state, it decides to wake up the local system cell. The pilot frequency channel power of the cell conductors recovers an operating state value and the cell exits the energy saving state.
    [035] The method to hibernate or wake up the local system cell refers to the patent application document, number 200910137213.8, entitled "Method and apparatus for controlling carrier power" and filed on April 23, 2009, filed in China by the applicant of this application.
    [036] Step 107, RAT1 conducts the energy-saving control decision periodically, the energy-saving control decision is comprehensively conducted according to the current time period, the energy-saving state of the system cell location, load situation and power-saving state of the cell of the outside system; after RAT1 decides that it needs to wake up the outer system cell, if the local system cell is in operational state and severely overloaded, the outer system neighbor cell is in power saving state, the message INTER-RAT ENERGY (the message may include the identity of the neighboring cell from the outside system and the energy saving control indication: wake up cell) is sent to RAT2 requesting the wake up of the RAT2 cell. The base station in RAT2 retrieves the pilot frequency channel power of the cell conductors to the value of the operational state and exits the energy saving state.
    [037] Step 108, after RAT2 receives the message INTER-RAT POWER SAVING INDICATION, the local system cell wake-up recovery is performed; if the process is successful, the INTER-RAT ENERGY SAVING RESPONSE is issued to RAT1; and if the process fails, the INTER-RAT POWER SAVING FAULT is issued to RAT2, and the failure message may include the cause of the failure. Mode 2:
    [038] In this mode, the two messages DIRECT TRANSFER OF ENB INFORMATION and the DIRECT TRANSFER OF MME INFORMATION of the S1 interface are extended, the information items are added in the messages to represent the update of the information of the inter-RAT cell and in this if so, the function can also be implemented by re-structuring the analog messages; the two eNB SET DOWN messages and the S1 interface MME SET DOWN messages are extended, the information items are appended to the messages to represent the inter-RAT cell information request, the interRAT cell information response, and the inter-RAT cell information failure response, and in this case the function can also be implemented by re-structuring the analog messages; the two messages, eNB SET DOWNLOAD and S1 interface MME SET DOWNLOAD are extended, information items are added in the messages to represent the inter-RAT cell power saving control indication, the control response of inter-RAT power saving, the inter-RAT power saving control fault response, and in this case the function can also be implemented by re-structuring analog messages; the modifications referring to protocol messages 36.413 are shown as table 1 to table 6 respectively. In them the bold and italic parts and the underlined parts are parts of newly added information items; table 1 is a cell identity type message, table 2 is an information transfer type message between systems, table 3 is the SON configuration transfer message, table 4 is the SON information message, table 5 is the SON information response message, and table 6 is the failure cause message. Table 1
    Table 2
    Table 3

    Table 4
    Table 5

    Table 6

    [039] Figure 2 is a flowchart of a method for controlling energy savings of an inter-RAT base station according to a second embodiment of the present invention. As shown in Figure 2, the method for the inter-RAT base station energy saving control in this mode includes the following steps: Step 201: get the information from the inter-RAT cell: the energy saving state (if it is is in power saving state) etc.; RAT1 sends the CONFIGURATION TRANSFER message from interface S1 to RAT2 and the content of the SON Information Request information item is the inter-RAT cell information request, to request information from the inter-RAT cell. Step 202, after RAT2 receives the CONFIGURATION TRANSFER message, RAT2 returns to the CONFIGURATION TRANSFER message carrying the SON Information Response information item to RAT1; if the process is successful, the SON Information Response information item contains the requested cell power saving state; and if the process fails, the SON Information Response information item contains the cause of the failure: Cause. Step 203, after the power saving state of the RAT1 cell changes, the Direct Transfer of Information message is sent (the contents of the information item Type of Inter-System Information Transfer being: inter-RAT cell information) to transfer the cell energy saving state of the local system to the RAT2 outdoor system. Step 204, after RAT2 receives the Direct Information Transfer message, the stored RAT1 cell state information (cell energy saving state etc.) is updated. Step 205, RAT1 conducts the energy saving control decision periodically, the energy saving control decision is conducted comprehensively according to the time period, the local system cell energy saving state, the situation load and energy-saving state of the cell of the outside system; the conditions for entering the power-saving state, for example, include the following items, entering the power-saving state, therefore, when all conditions are satisfied: (1) the cell enters the sleep state in the time period from 22:00-7:00 every day, while it regains operational status at other time periods; (2) the outdoor system cell is not overloaded; (3) the outdoor system cell is not in power saving state; when RAT1 decides that the conditions of cell hibernation in the local system are satisfied, the energy saving process by hibernating the local system cell is conducted; Step 206, RAT1 conducts the energy-saving control decision periodically, and the energy-saving control decision is comprehensively conducted according to the current time period, the energy-saving state of the local system cell, the load status and energy-saving status of the cell of the outside system; and when RAT1 decides that the conditions of waking up the local system cell are satisfied the process of recovering the wake state of the local system cell is carried out; Step 207, RAT1 makes the energy saving control decision periodically, the energy saving control decision is conducted comprehensively according to the time period, the local system cell energy saving state, the situation load and energy-saving state of the cell of the outside system; after RAT1 decides that it requires the outer system cell to wake up, if the local system cell is in the operational state and severely overloaded, and the outer system's neighboring cell is in the power-saving state, the TRANSFER message is sent FROM SETTING (leading indication to wake up the inter-RAT cell, and the content of the SON Information Request information item is, inter-RAT power saving indication) to RAT2 to request the cell of RAT2 to wake up; Step 208, after RAT2 receives the CONFIGURATION TRANSFER message, the local system cell is returned to the awake state; RAT2 returns the CONFIGURATION TRANSFER containing the Information Item Response Information from SON to RAT1; if the process is successful, the SON Information Response information item contains the energy saving state of the processed cell; if the process fails, the SON Information Response information item contains the cause of the failure: Cause.
    [040] It should be noted that the message formats in tables 1 to 6 above are given by way of example only, and that other functions can also be determined for the messages in table 1 to table 6 above, the CONFIGURATION TRANSFER message, for example, it may also contain the information indicating that the inter-RAT cell power saving state is changing etc. Modality 3:
    [041] In this mode, the messages, DIRECT TRANSFER OF INFORMATION (RNC, CN) from the Iu interface are prolonged, the information items are added to the message to demonstrate the updating of the inter-RAT cell information, and in this case the function also it can be implemented by a new structure of the analog messages; the messages, DIRECT INFORMATION TRANSFER (RNC, CN) from the Iu interface are extended, the information items are appended to the messages to represent the inter-RAT cell information request, the inter-RAT cell information response, and the response of failure of inter-RAT cell information, and in this case the function can also be implemented by re-structuring the analog messages; the DIRECT INFORMATION TRANSFER (RNC, CN) FROM INTERFACE Iu messages are lengthened, the information items are added to the messages to represent the inter-RAT cell power saving control indication, the inter power saving control response -RAT is the inter-RAT power saving control fault response, and in this case, the function can also be implemented by re-structuring the analog messages.
    [042] The modifications that refer to the 25.413 protocol messages are shown in tables 7 through 12, respectively, where the bold and italic parts and the underlined parts are newly added network element parts; table 7 is an information transfer type message between systems, table 8 is a cell identity type message, table 9 is a SON configuration transfer message, table 10 is a SON information message, table 11 is the SON information response message, and table 12 is the failure cause message. Table 7
    Table 8

    Table 9
    Table 10

    Table 11
    Table 12

    [043] Figure 3 is a diagram of a method for energy saving control of an inter-RAT base station according to a third embodiment of the present invention. As shown in Figure 3, the method for the inter-RAT base station energy saving control in this mode includes the following steps: Step 301, get the information from the inter-RAT cell: the energy saving state (if it is is in power saving state or not) etc.; RAT1 sends the DIRECT INFORMATION TRANSFER message from the Iu interface to RAT2, and the content of the SON Information Request information item is inter-RAT cell information request, for the inter-RAT cell information request. Step 302, after RAT2 receives the DIRECT TRANSFER OF INFORMATION message, RAT2 returns the DIRECT TRANSFER OF INFORMATION message containing the information item Information Response from SON to RAT1; if the process is successful, the SON Information Response information item contains the requested cell power saving state; and if the process fails, the SON Information Response information item contains the cause of the failure: Cause. Step 303, after the RAT1 cell power saving state is changed, the DIRECT TRANSFER OF INFORMATION message is sent (the contents of the Type of Information Transfer Between Systems information item is: inter-RAT cell information) to transfer cell energy saving state from local system to RAT2 outdoor system. Step 304, after RAT2 has received the DIRECT TRANSFER OF INFORMATION, the information about the stored state of the RAT1 cell (cell energy saving state etc.) is updated. Step 305, RAT1 makes the energy saving control decision periodically, the energy saving control decision is conducted comprehensively according to the time period, the local system cell energy saving state, the situation load and energy-saving state of the cell of the outside system; the conditions for entering the power-saving state include, for example, the following items, the power-saving state being entered when all conditions are satisfied: (1) the cell enters the sleep state in the period of time from 10:00 pm to 7:00 am every day, while recovering operational status in other periods of time; (2) the outer system cell is not overloaded; (3) the cell of the outside system is not in the energy saving state; when RAT1 decides that the conditions of cell hibernation in the local system are satisfied, the energy saving process by hibernating the local system cell is conducted. Step 306, RAT1 makes the energy saving control decision periodically, and the energy saving control decision is comprehensively conducted according to the current time period, the energy saving state of the local system cell, the load status and energy-saving status of the cell of the outside system; and when RAT1 decides that the conditions for waking the local system cell are satisfied, the process is returned to the wake state of the local system cell. Step 307, RAT1 conducts energy-saving control decision periodically, energy-saving control decision is conducted comprehensively according to the time period, the local system cell energy-saving state, the situation load and energy-saving state of the cell of the outside system; after RAT1 decides that it is necessary to wake up the cell of the outer system, if the cell of the local system is in operational state and is severely overloaded, and the neighboring cell of the outer system is in power saving state, the message DIRECT TRANSFER OF INFORMATION (leading to the wake up indication of the inter-RAT cell, and the content of the SON Information Request information item is: the inter-RAT energy saving indication) is sent to RAT2, requesting that the RAT2 cell wake up . Step 308, after RAT2 has received the DIRECT TRANSFER OF INFORMATION message, the wake state of the local system cell is retrieved; RAT2 returns DIRECT INFORMATION TRANSFER message leading information item SON Information Response to RAT1; if the process is successful the SON Information Response information item drives the energy-saving state of the processed cell; and if the process fails, the SON Information Response information item leads to the cause of the failure: Cause.
    [044] Figure 4 is a diagram of the structure of an apparatus for controlling the energy saving of an inter-RAT base station of the present invention. As shown in Figure 4, the apparatus for energy-saving control of the inter-RAT base station of the present invention includes an acquisition unit 40, a decision unit 41 and an execution unit 42; wherein the obtaining unit 40 is configured to obtain the cell status information from the outside system; the decision unit 41 is configured to drive the energy saving control decision according to the cell state information of the outside system and the cell state information of the local system covering the same area or a neighboring area that the cell of the outer system; and the execution unit 42 is configured to wake up the outer system cell or the local system cell, or hibernate the outer system cell or the local system cell, according to the decision result of the decision unit. The cell state information includes the load status of the cell, whether or not it is in the power saving state, and the power saving state corresponds to the specified period of time. The decision unit 41 drives the power saving control decision, including: deciding that the local system cell enters sleep state when it is determined that the local system cell is in the sleep time period, the local system cell outdoor system that covers the same area, or the neighboring area, as the local system cell is not overloaded and the outdoor system cell is not in power saving state; or, when it determines that the local system cell is overloaded and the cell of the outside system that covers the same area, or the neighboring area, that the cell of the local system is in sleep state, then decides to wake up the cell of the outside system; or when it is determined that the outer system cell covering the same area, or the neighboring area, that the local system cell is overloaded and the local system cell is in sleep state then decides to wake up the local system cell .
    [045] Figure 5 is a diagram of the structure of the obtaining unit of the present invention. As shown in Figure 5, the acquisition unit 40 of the present invention includes a sender module 400, a receiver module 401 and an acquisition module 402; wherein the sender module 400 is configured to send the inter-RAT cell information request message to the outside system; the receiver module 401 is configured to receive the inter-RAT cell information response message from the outside system, and the obtaining module 402 is configured to obtain the cell status information from the outside system. The inter-RAT cell information request message and the inter-RAT cell information reply message are newly determined dedicated messages; or, then the inter-RAT cell information request message and the inter-RAT cell information response message are carried by the eNB DIRECT INFORMATION TRANSFER message and the MME DIRECT TRANSFER INFORMATION message between the base station and the MME respectively, or driven by the eNB CONFIGURATION TRANSFER message and the MME CONFIGURATION TRANSFER message, respectively; or else the inter-RAT cell information request message and the inter-RAT cell information response message are carried by the DIRECT TRANSFER OF INFORMATION message between the base station controller and the transmission network.
    [046] Figure 6 is another diagram of the structure of the obtaining unit of the present invention. As shown in Figure 6, the acquisition unit 40 of the present invention includes a receiver module 403 and an acquisition module 404; wherein the receiver module 403 is configured to receive the inter-RAT cell information update message sent by the outside system; and the obtaining module 404 is configured to obtain the cell status information from the outside system. The inter-RAT cell information update message is the newly determined dedicated message respectively; or else the inter-RAT cell information update message is carried by the MME INFORMATION DIRECT TRANSFER message or the MME SETUP TRANSFER message between the base station and the MME; or else the inter-RAT cell information update message is carried by the DIRECT TRANSFER OF INFORMATION message between the base station controller and the transmission network.
    [047] Figure 7 is a diagram of the structure of an execution unit of the present invention. As shown in Figure 7, the execution unit 42 of the present invention includes a sender module 420, a receiver module 421 and a determination and acquisition module 422; the sender module 420 being configured to send the interRAT cell wake-up request message to the outside system; the receiver module 421 is configured to receive the inter-RAT cell wake-up response message from the outside system; and the determination and acquisition module 422 is configured to determine that the outer system cell is awake and obtain the status information of the outer system cell. The inter-RAT cell wake-up request message and the inter-RAT cell wake-up response message are newly determined dedicated messages, respectively; or else the inter-RAT cell wake-up request message and the inter-RAT cell wake-up response message are carried by the eNB INFORMATION DIRECT TRANSFER message and the MME INFORMATION DIRECT TRANSFER message between the base station and the MME, respectively, or driven by the eNB CONFIGURATION TRANSFER message and the MME CONFIGURATION TRANSFER message, respectively; or else the inter-RAT cell wake-up request message and the inter-RAT cell wake-up response message are carried by the DIRECT TRANSFER OF INFORMATION message between the base station controller and the transmission network.
    [048] It should be understood by those skilled in the art that the apparatus for inter-RAT base station energy saving control as shown in Figure 4 is configured to implement the above method for inter base station energy saving control -RAT. The realization function of each process unit in Figure 4 and the process modules shown in Figures 5 to 7 can refer to the relevant description of the previous method for your understanding. The function of each process unit and process modules can be performed by programs contained in the processor and can also be performed by specific logic circuits.
    [049] The above description represents only the preferred embodiments of the present invention and is not intended to limit the scope of the present invention.
    权利要求:
    Claims (14)
    [0001]
    1. Method for energy saving control of an inter-RAT base station, characterized by the fact that it comprises: obtaining, through a local system, information about the state of an external system cell in an external system, making a energy-saving control decision according to the information about the state of the cell of the outside system and the information about the state of a cell of the local system that covers the same area, or the neighboring area of the cell of the outside system, and wake up the outer system cell or the local system cell or causing the outer system cell or the local system cell to hibernate according to a result of the decision; where the information about the state of the cell includes whether or not it is in a power-saving state; wherein the home system cell belongs to a home system base station, the outdoor system cell belongs to an outdoor system base station, and the home system base station and outdoor system base station are the inter-base station. RAT to each other; wherein obtaining information about the state of the cell from the outside system consists of: sending from the local system an inter-RAT information request message to the outside system, and obtaining the information about the state of the cell from the outside system from an inter-RAT cell information response message received from the outside system; wherein, the inter-RAT cell information request message and the inter-RAT cell information response message are carried by a base station direct information transfer message (eNB DIRECT INFORMATION TRANSFER) and by a Mobility Management Entity (MME) information transfer message (DIRECT MME INFORMATION TRANSFER) between a base station and an MME respectively, or driven by a base station configuration transfer message (eNB CONFIGURATION TRANSFER ) and an MME configuration transfer message (MME CONFIGURATION TRANSFER), respectively.
    [0002]
    2. Method according to claim 1, characterized in that obtaining information about the state of the cell of the external system consists of: extracting information about the state of the cell of the external system after having received a message of update of inter-RAT cell information sent by the outside system.
    [0003]
    3. Method according to claim 2, characterized in that: the inter-RAT cell information update message is carried by a DIRECT MME INFORMATION TRANSFER message or by an MME CONFIGURATION TRANSFER message between the base station and the MME; or else that the inter-RAT cell information update message is carried by a DIRECT INFORMATION TRANSFER message between a base station controller and a transmission network.
    [0004]
    4. Method according to any one of claims 1 to 3, characterized in that the information about the cell state also includes the cell load situation and an energy saving state that corresponds to a period of time established.
    [0005]
    5. Method according to claim 4, characterized in that the effect of the energy saving control decision consists of: deciding that the local system cell enters a hibernation state when it is determined that the system cell is in a hibernation time period, that the cell of the outdoor system that covers the same or a neighboring area as the cell of the local system is not overloaded, and that the cell of the outdoor system is not in the power-saving state ; or else, decide that the outer system cell should wake up when it is determined that the local system cell is overloaded and the outer system cell covering the same area, or the area neighboring the local system cell is in sleep state ; or else decide that the local system cell should wake up when it is determined that the outer system cell covering the same or a neighboring area as the local system cell is overloaded and the local system cell is in sleep state.
    [0006]
    6. Method according to claim 5, characterized in that the awakening of the cell of the external system according to the result of the decision consists of: sending by the local system a message requesting the awakening of the inter-RAT cell to the outside system, in determining that the outside system cell is awake from the inter-RAT cell wake-up response message received from the outside system, and in obtaining the status information of the outside system cell.
    [0007]
    7. Method according to claim 6, characterized in that the inter-RAT cell wake-up request message and the inter-RAT cell wake-up response message are carried by a DIRECT TRANSFER OF eNB INFORMATION message and by a DIRECT TRANSFER OF MME INFORMATION message between a base station and an MME respectively, or driven by an eNB SETUP TRANSFER message and an MME SETUP TRANSFER message respectively; or else the interRAT cell wake-up request message and the inter-RAT cell wake-up response message are carried by a DIRECT INFORMATION TRANSFER message between a base station controller and a transmission network.
    [0008]
    8. Apparatus for the energy saving control of an inter-RAT base station in a local system, comprising an acquisition unit, a decision unit and an execution unit; characterized in that, the obtaining unit is configured to obtain information about the state of a cell of the outside system in an outside system; the decision unit is configured to drive the energy-saving control decision according to the information about the state of the cell from the outside system and the information about the state of a cell in the local system that covers the same area, or area. neighbor of the outer system cell; and the execution unit is configured to wake up the outer system cell or the local system cell or make the outer system cell or the local system cell to hibernate according to a decision result of the decision unit; where the information about the state of the cell includes whether or not it is in a power-saving state; wherein the home system cell belongs to a home system base station, the outdoor system cell belongs to an outdoor system base station, and the home system base station and outdoor system base station are the inter-base station. RAT to each other; wherein the acquisition unit further comprises a sender module, a receiver module and an acquisition module; where the sender module is configured to send an inter-RAT cell information request message to the outside system; the receiver module is configured to receive an inter-RAT cell information response message from the outside system; and the obtaining module is configured to obtain information about the status of the external system cell; wherein the inter-RAT cell information request message and the interRAT cell information response message are carried by a direct base station information transfer message (eNB DIRECT INFORMATION TRANSFER) and by a transfer message mobility management entity information (DIRECT TRANSFER OF MME INFORMATION) between a base station and an MME respectively, or conducted by a base station configuration transfer message (eNB CONFIGURATION TRANSFER) and by a transfer message settings of MME (MME SETTING TRANSFER), respectively;
    [0009]
    9. Apparatus according to claim 8, characterized in that the obtaining unit further comprises a receiver module and a obtaining module; wherein, the receiver module is configured to receive an inter-RAT cell information update message sent by an outside system; and the fetching module is configured to obtain the cell status information from the outside system.
    [0010]
    10. Apparatus according to claim 9, characterized in that: the inter-RAT cell information update message is carried by a DIRECT MME INFORMATION TRANSFER message or by an MME CONFIGURATION TRANSFER message between the base station and the MME; or, the interRAT cell information update message is carried by a DIRECT TRANSFER OF INFORMATION message between a base station controller and the broadcast network.
    [0011]
    11. Apparatus according to any one of claims 8 to 10, characterized in that the information about the state of the cell also includes the load situation of the cell and an energy saving state that corresponds to a period of time established.
    [0012]
    12. Apparatus according to claim 11, characterized in that the decision unit is further configured to decide that the local system cell enters a sleep state when it is determined that the local system cell is in a sleep time period, that the outdoor system cell covering the same area, or the neighboring area of the local system cell, is not overloaded and that the outdoor system cell is not in the power-saving state; or else, deciding to wake up the outer system cell when it is determined that the local system cell is overloaded and the outer system cell covering the same area, or the area neighboring the local system cell is in sleep state; or else, decide to wake up the local system cell when it is determined that the outer system cell covering the same area, or the neighboring area of the local system cell is overloaded and the local system cell is in sleep state.
    [0013]
    13. Apparatus according to claim 12, characterized in that the execution unit further comprises a sender module, a receiver module and a determination and acquisition module; wherein the sender module is configured to send a request message to wake up the inter-RAT cell to the outside system; the receiver module is configured to receive a wake-up response message from the outside system inter-RAT cell; and the determination and acquisition module is configured to determine that the outer system cell is awake and to obtain the information about the status of the outer system cell.
    [0014]
    14. Apparatus according to claim 13, characterized in that the request message to wake up the inter-RAT cell and the response message to wake up the inter-RAT cell are carried by a DIRECT TRANSFER OF INFORMATION message DE eNB and by a DIRECT TRANSFER OF MME INFORMATION message between a base station and an MME respectively, or driven by an eNB CONFIGURATION TRANSFER message and an MME CONFIGURATION TRANSFER message, respectively; or else, the interRAT cell wake-up request message and the inter-RAT cell wake-up response message are carried by a DIRECT INFORMATION TRANSFER message between a base station controller and a transmission network.
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    同族专利:
    公开号 | 公开日
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    US20120113882A1|2012-05-10|
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    WO2011009415A1|2011-01-27|
    CN101965038B|2015-06-10|
    EP2445269A1|2012-04-25|
    ES2762399T3|2020-05-25|
    EP2445269B1|2019-09-25|
    BR112012001290A2|2017-05-30|
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    法律状态:
    2019-01-15| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-02-18| B15K| Others concerning applications: alteration of classification|Free format text: A CLASSIFICACAO ANTERIOR ERA: H04W 52/02 Ipc: H04W 52/02 (2009.01), H04W 36/22 (2009.01), H04W 8 |
    2020-02-18| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-05-25| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-06-22| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 23/07/2010, OBSERVADAS AS CONDICOES LEGAIS. PATENTE CONCEDIDA CONFORME ADI 5.529/DF, , QUE DETERMINA A ALTERACAO DO PRAZO DE CONCESSAO. |
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