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  • 专利说明
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    • 专利摘要:
    WIRELESS COMMUNICATION METHOD, WIRELESS COMMUNICATION STATION, AND COORDINATOR WIRELESS COMMUNICATION STATION. The selection of responder aware relay station in a wireless communication network is provided. One implementation includes evaluating the operating parameters of multiple candidate wireless relay stations and selecting a wireless relay station from among multiple candidate wireless relay stations based on the evaluation. Wireless communication is transmitted to the selected wireless relay station via a wireless communication medium.
    公开号:BR112012026500B1
    申请号:R112012026500-8
    申请日:2011-04-15
    公开日:2021-08-31
    发明作者:Huai-Rong Shao；Ju-Lan Hsu；Chiu Ngo
    申请人:Samsung Electronics Co., Ltd；
    IPC主号:
    专利说明:

    TECHNICAL FIELD
    The present invention relates to wireless networks, and particularly, to relay station selection in wireless networks. FUNDAMENTALS OF THE TECHNIQUE
    In wireless networks comprising wireless stations, the 60 GHz radio frequency band can provide approximately ten times the data communication rate between wireless stations compared to data rates according to the IEEE 802.lln standard . The increased data rate of the 60 GHz band is at the expense of reduced communication range and increased system complexities. Additionally, the 60 GHz band involves highly directional line-of-sight (LOS) transmission characteristics between wireless stations. DISCLOSURE OF THE INVENTION SOLUTION TO THE PROBLEM
    Embodiments of the present invention provide a method and system for selecting a wireless relay station for communication between wireless stations. ADVANTAGEOUS EFFECTS OF THE INVENTION
    An embodiment of the invention provides the ability to communicate via a wireless relay station to increase the robustness and usability of wireless networks in the 60 GHz band. BRIEF DESCRIPTION OF THE DRAWINGS
    Figure 1 shows a block diagram of a wireless communication system implementing relay and selection discoveries, in accordance with an embodiment of the present invention.
    Figure 2 shows a Relay Search Response frame including operational information for candidate wireline relay stations in accordance with embodiments of the invention.
    Figure 3 shows a Relay Capability Station Information (STA) field including operational information for a candidate wireless relay station, in accordance with embodiments of the invention.
    Figure 4 shows an originating wireless station-oriented process for relay discovery and selection, in accordance with an embodiment of the invention.
    Figure 5 shows a wireless coordinator station-oriented process for relay discovery and selection, in accordance with an embodiment of the invention.
    Figure 6 shows a block diagram of a wireless local area network implementing relay discovery and selection, in accordance with an embodiment of the present invention.
    Figure 7 is a high-level block diagram showing an information processing system comprising a computer system useful for implementing an embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION
    Embodiments of the present invention provide a method and system for selecting a wireless relay station for communication between wireless stations. One embodiment comprises evaluating the relay operating parameters of multiple candidate wireless relay stations, and selecting a wireless relay station among multiple candidate wireless relay stations based on the assessment. A wireless communication comprises a transmission to the selected wireless relay station via a wireless communication medium.
    These and other features, aspects and advantages of the present invention will become understood with reference to the following description, appended claims and appended figures. MODE FOR THE INVENTION
    In one embodiment, the present invention provides a method and system for selecting a responder aware relay station in a wireless communication network. Embodiments of the present invention provide a process for discovering and selecting a wireless relay station among multiple candidate wireless relay stations to establish relay operations in a wireless network. One embodiment comprises evaluating the relay operating parameters of multiple candidate wireless relay stations; selecting a wireless relay station from among the multiple candidate wireless relay stations based on the evaluation, and initiating the transmission of a wireless communication to the selected wireless relay station via a wireless communication medium.
    An embodiment of the invention provides the ability to communicate via a wireless relay station to increase the robustness and usability of wireless networks in the 60 GHz band. In one implementation, the present invention provides a method and system for discovery and selecting a candidate wireless relay station (i.e., relay STA) for efficient relay functionality in a wireless network such as a wireless local area network (WLAN) comprising multiple wireless stations capable of communicating over a wireless medium such as 60 GHz radio frequency (RF).
    Exemplary embodiments of the invention are described herein in connection with the IEEE 802.11 wireless communication protocol. Figure 1 shows a block diagram of an exemplary communication system 100 comprising a WLAN including multiple wireless stations such as a wireless personal basic service set (PBSS) control point (i.e., PCP) or point station (i.e., AP) 102, and a plurality of wireless stations 104 (i.e., STA1,..., STAh), in accordance with an embodiment of the invention. Stations 102 and 104 comprise transceivers capable of transmitting and receiving information over wireless channels.
    Relay allows a usable relay source wireless station (RUS) to transmit frames of information to a destination RUS with the assistance of another wireless station called a wireless station that can support relay (RSUS). Retransmission via an RSUS (eg wireless relay station) can improve the reliability of wireless communication (such as in the mmWave band) in case a direct link between the originating RUS is interrupted (eg source wireless station) and the destination RUS (eg destination wireless station).
    Wireless network 100 in Figure 1 implements station discovery and selection and relay operations, in accordance with an embodiment of the invention. At least one wireless station in wireless network 100 comprises an RSUS. Two or more wireless stations (for example, a wireless source station and a wireless destination station) in wireless network 100 comprise RUS.
    Upon association with a wireless network that supports relay, a RUS such as an initiating wireless station discovers and evaluates the wireless relay communication links with one or more candidate wireless relay stations (i.e., one or more wireless stations RSUS wire). This allows access to the relay capabilities of candidate wireless relay stations, and determination of their relay capabilities and operational parameters comprising their multi-band status and period of presence. These parameters determine the limits of the physical/functional capacity of each wireless relay station in retransmitting information traffic, and thus can be used to assist in the selection of wireless retransmission.
    In this description, a responder refers to a responder of a relay selection process as requested by an initiator (eg, originating wireless station). Responders can be candidate wireless relay stations or a destination wireless station. In one embodiment, responding wireless stations become aware of the signaling relay selection process. As described in more detail, additionally, below, the relay selection process includes beamforming (BF) training and channel measurements for wireless communication links between wireless stations, in which the responders of the selection process relays collect relevant information and then feed the results back to the initiator of the relay selection process at the end of the channel measurement and beamforming training stage.
    In an implementation of the invention, an initiator such as a source wireless station and/or the PCP/AP discovers, measures and selects a candidate wireless relay station in conjunction with a destination wireless station. The selected wireless relay station wirelessly relays communications from the source wireless station to a responding wireless station such as a destination wireless station. The selected wireless relay station wirelessly relays communications from the destination wireless station to the source wireless station. An implementation of a relay discovery and selection process in accordance with an embodiment of the invention is described below. Quick Discovery and Evaluation of Candidate Relay Links
    According to an embodiment of the invention, the originating wireless station transmits a request to the PCP/AP for a list of candidate wireless relay stations and their relay capabilities. In response, the PCP/AP transmits the list of candidate wireless relay stations and their relay capabilities to the originating wireless station. Such information can also be provided to the target wireless station.
    As such, when an originating wireless station wishes to establish a relay communication link with a wireless relay station, the PCP/AP sends to the originating wireless station a list of candidate wireless relay stations with their capabilities by allowing the originating wireless station to pre-screen candidate wireless relay stations. Figure 2 shows a Relay Search Response frame 110 from the PCP/AP, in accordance with the embodiments of the invention. Operational information elements (IEs) or parameters may be included in a Relay Capability STA Information field 120 shown in Figure 3 within frame 110 for each candidate wireless relay station.
    In an embodiment of the invention, the originating and destination wireless stations perform directional transmission, such as beamforming (BF) transmissions. If the source wireless stations or the destination wireless stations do not have an active communication link, or have not recently performed beamforming training with a candidate wireless relay station, then the source wireless stations and/ or destination need to discover and train beamforming with the candidate wireless relay station.
    For efficient beamforming and discovery training with the candidate wireless relay stations, certain status and operating information from the candidate wireless relay station is beneficial to speed up the process. Embodiments of the invention provide a method for communicating functional and operational parameters of each candidate wireless relay station, including wake-up scheduling, multi-band information elements and wake-up window, to the originating wireless station or to the PCP/ AP. Embodiments of the invention further provide signaling of a relay selection process, and the wireless stations involved in the selection process, to the destination wireless station and to the candidate wireless relay stations, through a selection process. source-oriented or PCP/AP-oriented relay.
    In one embodiment, the retransmission discovery and selection process includes the PCP/AP sending relevant status and operation information in a Relay Capability STA Information field frame. In one example, such relevant operating and status information includes the Activation Schedule information elements (IEs), wake-up window IEs, multiband IE, etc., for candidate wireless relay stations for the wireless stations. source and destination wire. Figure 3 shows a frame format 120 for a Relay Capability STA Information field including Wake-up Schedule IE, Wake-up Window IE, Multi-Range IE, according to an embodiment of the invention.
    The source and destination wireless stations use such information to determine the period of presence of a candidate wireless relay station and the operating range information during which the source and destination wireless station can attempt to obtain a Opportunity Time (TXOP) or Period of Service (SP) for wireless channel measurement and/or band formation training with the candidate wireless relay station.
    Additionally, the operation and status information of each candidate wireless relay station can be used to determine the preference and suitability of a candidate wireless relay station serving as a relay, before and during the discovery/training process. The discovery of candidate wireless relay stations need not be exhaustive based on the relay capable list obtained from the PCP/AP. Relay Selection Procedure
    In one embodiment, the relay selection process begins with the originating wireless station sending a relay search request frame to the PCP/AP and ends with the originating wireless station selecting a relay wireless station from collecting wireless channel measurement results over the candidate relay station directional wireless links (for example, directional wireless links established by beamforming across the wireless channels). Examples of such directional wireless links include a directional wireless link between a relay station and destination wireless station (relay destination link) or directional wireless link between a relay station and a source wireless station (link retransmission source).
    Embodiments of the invention provide a responder aware relay selection process for establishing and proceeding through relay selection between a source wireless station, a destination wireless station, a relay wireless station and the PCP/AP. In one embodiment, responders are specifically informed (eg via messages) of the relay selection process including beamforming training and relay link measurements for relay selection. As such, the relay selection process responders can collect information relevant to the relay selection process and feed back (report) the results to the source (initiator) at the end of the relay communication and training link measurement stage of beam formation. In one embodiment, a relay communication link refers to a wireless channel for directional communication (e.g., via beamforming) between a relay station and an originating wireless station, or between a relay station. and a wireless target station. Source-Oriented Relay Selection Procedure
    According to an embodiment of the invention, the decision maker and the central hub of the relay selection process is the originating wireless station. An illustrative source-oriented relay selection process 200 is shown in Figure 4, in accordance with an embodiment of the invention. The retransmission selection process is not limited to that illustrated in Figure 4 and different variations can be deduced. For example, a corresponding PCP/AP oriented relay selection process can also be deduced, in accordance with the embodiment of the invention, as will be recognized by those skilled in the art.
    Referring to Figure 4, if an originating wireless station (i.e., originating STA) does not know or is not aware of one or more candidate wireless relay stations (i.e., relay candidate STAs) in a set of Basic Services (BSS) for the network, the originating wireless station initiates the relay selection procedure by sending a Relay Search Request to the PCP/AP (ie, PCP or AP) in a process block 201. In process block 202 the PCP/AP responds with a Relay Search Response frame including a list of candidate wireless relay stations along with their corresponding relay capabilities and operation status information, as described above in in relation to Figures 2-3. If the originating wireless station has sufficient knowledge about the candidate wireless relay stations available in the BSS, the originating wireless station can skip the relay request process blocks 201 and 202.
    Given the capacity and status information available at the originating wireless station, the originating wireless station can screen and select a preferable subset of the candidate wireless relay stations. The capacity and status information may comprise information received from the PCP/AP in process block 202, or local information such as for the existing relay communication link maintained between a candidate wireless relay station and the wireless station source.
    In process block 203, the originating wireless station initiates a relay selection request by sending a relay selection request frame to the destination wireless station (i.e., destination STA) including a list of stations candidate wireless relays for consideration by the destination wireless station. The retransmission selection request frame may include a subset of the status and capacity information available to the originating wireless station (such as a subset of the information provided to the originating wireless station in the Relay Search Response frame to from the PCP/AP).
    If the source and destination wireless stations have already performed beamforming training with each other for directional communication with each other, the source wireless station can send the relay selection request frame directly to the wireless station of destination and receive a response from it. Otherwise, the source wireless station can send the relay selection request frame to the destination wireless station via the PCP/AP, and the destination wireless station can send a reply back to the wireless station. source wire through the PCP/AP.
    In an embodiment of the invention, in process block 204 the destination wireless station may acknowledge (ACK) the relay selection request frame or send a response frame rejecting a subset or all of the preferred candidate wireless relay stations with given status code or reason code, included. As such the source and destination wireless station collaborates in selecting a relay wire station for the two wireless stations, source and destination. The retransmission selection request frame and the exchange of responses can be performed directly between the source and destination wireless station, or through the PCP/AP.
    In process block 204, if the destination STA accepts one or more candidate wireless relay stations, in process block 205 the originating wireless station performs the necessary channel measurement and/or beamforming training process with each wireless relay station accepts. Similarly, in process block 206 the destination wireless station proceeds to perform the necessary channel measurement and/or beamforming training process with each supported wireless relay station. Such beamforming training follows known beamforming protocols and can be performed over a containment-based period (CBP) or upon request of an SP from the PCP/AP. An SP is a block of channel time obtained using known channel time reservation mechanisms.
    In one embodiment of the invention, prior to beamforming training with each supported wireless relay station, the originating wireless station or the PCP/AP informs each wireless relay station of the relay selection process by sending a an unsolicited retransmission search response and/or beamforming training scheduling information in an Extended Programming element for the wireless relay station. As the wireless relay stations are aware of the relay selection process, each such wireless relay station can give back to the originating wireless station any channel measurement and/or beamforming training results, existing between the relay station and the originating wireless station, as well as existing beamforming and/or channel measurement training results between that relay station and the destination wireless station.
    In another embodiment, the originating wireless station does not need to pre-screen the wireless relay stations that are candidates for preferable relay stations. In this case, the retransmission selection request and response between the source wireless station and the destination wireless station can be replaced by a similar procedure, but between the PCP/AP and the destination wireless station. Specifically, the PCP/AP sends the Relay Search Request and the Relay Selection Request along with the list of candidate wireless relay stations to the destination wireless station, whereupon the destination wireless station sends a response. or ACK back to PCP/AP with relay stations supported, to provide the originating wireless station.
    In another modality, the PCP/AP sends or directs an unsolicited relay selection response with the list of candidate wireless relay stations to the destination wireless station (after the PCP/AP sends it to the wireless station thus eliminating the need for the destination wireless station to send a retransmit selection response or ACK back to the PCP/AP.
    Referring back to Figure 4, in process block 205, the source wireless station performs beamforming training and channel measurements required on the wireless communication link between each supported relay station and the home wireless station. source (ie, relay source link or relay initiator link), and collects information about the results of channel measurements and beamforming training on each relay source link.
    In process block 206 the destination wireless station performs channel measurements and beamforming training required on the wireless communication link between channel measurements and beamforming training required on the wireless communication link between each station The relay accepts the destination wireless station (ie, relay destination link or relay responder link), and collects information about the results of channel measurements and beamforming training on each relay destination link .
    When the destination wireless station completes the channel measurements and beamforming training required on each relay destination link, in process block 207, the destination wireless station sends a multiple relay channel measurement report to the source wireless station, followed by an ACK frame sent by the source wireless station to the destination wireless station in process block 208. The multiple relay channel measurement report includes training and channel measurement results beamforming on each relay destination link.
    In another embodiment, the source wireless station sends a multiple relay channel measurement request to the destination wireless station, and the destination wireless station sends a multiple relay channel measurement report back to the station. wireless source.
    In process block 209, the originating wireless station uses the information in the multiple relay channel measurement report for each relay destination link from the destination wireless station, along with its own information on each relay link. Relay source, to select an appropriate relay wireless station from those supported by the destination wireless station. The originating wireless station then sends to the destination wireless station information about the selected wireless relay station to establish the relay links with the selected wireless relay station.
    In another embodiment, the present invention provides a destination wireless station oriented relay selection process, equivalent to that described above for a source wireless station oriented relay selection process.
    After a relay station is selected, the source and destination wireless stations establish relay procedures with the selected relay station and communicate the data (eg audio/video data) via the selected relay selection via directional wireless links. PCP/AP Oriented Relay Selection Procedure
    In another embodiment, the present invention provides a retransmission discovery and selection process, oriented to PCP/AP (PCP or AP); where the decision maker and central concentrator of the relay selection process is the PCP/AP. An illustrative PCP/AP 250 oriented relay selection process is shown in Figure 5 in accordance with an embodiment of the invention and described below.
    If the originating wireless station (Home STA) does not know or is not aware of one or more candidate wireless relay stations (Relay Candidate STAs), in process block 251 the originating wireless station initiates a process of retransmission selection by sending a retransmission search request frame to the PCP/AP. In process block 252, the PCP/AP responds with a list of candidate relay stations along with their corresponding relay capabilities and operation status information (further described above in relation to Figures 2-3). If the originating wireless station has sufficient knowledge about the candidate relay stations available in the BSS, the originating wireless station can skip the Relay Fetch Request Process Blocks 251, 252.
    Given the information available at the originating STA (incoming and/or local information such as for an existing link maintained between a candidate relay station and the originating wireless station), the originating wireless station can perform screening and select a subset of candidate relay stations and preferred relay stations.
    In process block 253, the originating wireless station sends a relay selection request frame to the PCP/AP to consider the list of preferred candidate relay stations. The relay selection request frame sent to the PCP/AP may include local information about the relay links available only at the originating wireless station. Upon receiving the relay selection request, in process block 254, the PCP/AP confirms the request, and then sends the relay selection request along with the list of preferred candidate relay stations to the destination wireless station, in process block 255. The destination wireless station responds with a retransmit selection ACK frame in process block 256. The PCP/AP proceeds to process block 257 to allocate time for channel measurements and/or training of beamforming between the relay source-relay and relay destination wireless links, or to process block 257 to request the source and destination stations to perform channel measurements and/or beamforming training on a CBP, with candidate relay stations preferred.
    In another modality, the originating wireless station does not pre-screen candidate relay stations, where the retransmission search request and the retransmission selection request can be combined in such a way that the retransmission selection request and ACK between the originating wireless station and PCP/AP is eliminated.
    Similar to process blocks 205 and 206 in Figure 4, in process blocks 259 and 260 in Figure 5, the source and destination wireless stations complete the measurements and beamforming training needed on the relay and source links on the relay destination links to the candidate relay stations accepted by the destination relay station in process block 256.
    In process block 261, the destination wireless station sends a multiple retransmission channel measurement report to the PCP/AP, followed by an ACK frame sent by the PCP/AP to the destination wireless station in process block 262 Similarly, in process block 263, the originating wireless station sends a multiple retransmission channel measurement report to the PCP/AP, followed by an ACK frame sent by the PCP/AP to the originating wireless station in the block of process 264.
    In another modality, the PCP/AP programs channel time for the source and destination stations to perform necessary training and measurements with accepted relay stations, and the PCP/AP requests channel measurement reports of multiple retransmissions from stations without source to destination wire, where the source and destination wireless stations send back to the PCP/AP the multiple retransmission channel measurement reports containing the channel measurement and retransmission source beamforming training results and relay destination, respectively.
    In another embodiment, the source wireless stations send the multi-relay channel measurement request to the destination wireless stations, and then the destination wireless stations send the multi-relay channel measurement reports back to the PCP/AP.
    In process block 265 the PCP/AP then uses the multiple relay channel measurement reports received from the originating and destination wireless stations to select a relay station from among the accepted relay stations. The PCP/AP also sends the source and destination wireless stations information about the selected relay station when establishing a relay link. In another modality, PCP/AP can also be selected as the relay station based on channel measurement results.
    After a relay station is selected, the source and destination wireless stations establish relay procedures with the selected relay station and communicate the data (eg audio/video data) via the selected relay station via of directional wireless links.
    Figure 6 shows a block diagram of an exemplary implementation of a wireless communication system 300 providing relay station discovery and selection, in accordance with an embodiment of the invention. System 300 comprises a wireless PCP/AP 102 and wireless stations 104 (e.g., STA1,..., STAn in Figure 1) including a home wireless station (home STA) 104S, a home wireless station. destination (destination STA) 104D, at least one wireless relay STA 104R, in a wireless local area network.
    In one embodiment, network 300 implements a frame structure for wireless communication between wireless devices/stations at that location. The frame structure uses packet transmission in a Media Access Control (MAC) layer and a physical layer (PHY) . Each wireless station includes a MAC layer and a PHY layer. The MAC layer receives a data packet including payload data, and appends a MAC header thereto, to build a MAC Protocol Data Unit (MPDU). The MAC header includes information such as a source address (SA) and a destination address (DA). The MPDU is a part of a PHY Service Data Unit (PSDU) and is transferred to a PHY layer in the AP for appending a PHY header (ie, a PHY preamble) thereto to build a PHY Protocol Data Unit (PPDU). The PHY header includes parameters for determining a transmission scheme including an encoding/modulation scheme.
    Specifically, the originating STA 104S comprises a PHY layer 301 and a MAC layer 302. The MAC layer 302 includes a retransmission selection module 303 that implements retransmission discovery and selection for the originating STA 104S, in accordance with the modalities of invention as described herein.
    The destination STA 104D comprises a PHY layer 311 and a MAC layer 312. The MAC layer 312 includes a relay selection module 313 that implements relay discovery and selection for the destination STA 104D in accordance with embodiments of the invention, as per embodiments of the invention. described here.
    Each relay STA 104R includes a PHY layer 321 and a MAC layer 322. The MAC layer 322 includes a relay module 323 that implements relay operations, in accordance with embodiments of the invention as described herein.
    The PCP/AP 102 comprises a PHY layer 331 and a MAC layer 332. The MAC layer 332 includes a control module 333 which, among other operations, implements typical functions of a PCP/AP. The MAC layer 332 further includes a relay discovery and selection module 334 that implements relay discovery and selection for PCP/AP, in accordance with embodiments of the invention as described herein.
    According to the embodiments of the invention, in the network 300, relevant functional and operational information from each candidate relay station is distributed between the source, destination and PCP/AP stations at early stages of relay establishment, thus avoiding inefficiency and the extra code associated with a relay selection process. The relay candidate selection and discovery process can be directed by source STA 104S, destination STA 104D, or by PCP/AP 102, with more flexibility to leverage existing local information. Embodiments of the invention are useful where the source and destination STAs 104S and 104D may (or may not) have trained forward link beamforming with the relay stations prior to the relay selection process. Embodiments of the invention are additionally useful where destination source STAs 104S and 104D cannot communicate with each other directly.
    Participation of a selected relay STA 104R in a relay operation between the source STA 104S and destination STA 104D is non-binding, wherein the selected relay STA 104R may stop such relay function at its own option. This gives relay stations greater flexibility and an incentive to collaborate. In one embodiment, an auxiliary relay wireless station is always maintained for a source wireless station and a destination wireless station in the event of a departure from a currently selected relay station.
    In one embodiment, a home wireless station wishing to select a wireless relay station for relay operations may use information (parameters) including the temporary storage capacity of each candidate wireless relay station before proceeding to the process of establishment. Such parameters serve not only as a decision factor for the relay selection process, but also as operating parameters to avoid faulty operations such as buffer overflow at the selected wireless relay station.
    Exemplary embodiments of the invention have been described herein in connection with the IEEE 802.11 wireless communication protocol. Embodiments of the invention are useful with wireless networks such as WLANs, mmWave millimeter wave wireless networks, IEEE 802.11ad wireless networks, Wireless Gigabit Alliance (WiGig) wireless networks, etc. In one example, the wireless stations in Figure 6 (and Figure 1) are capable of performing directional communication such as through beamforming and antenna training (for example, in the 60GHz RF band), according to the modalities of the invention.
    Figure 7 is a high-level block diagram showing an information processing system comprising a computer system 10 useful for implementing an embodiment of the present invention. Computer system 10 includes one or more processors 11, and may further include an electronic display device 12 (for displaying graphics, text, and other data), a main memory 13 (e.g., random access memory (RAM) ), storage device 14 (e.g. hard disk drive), removable storage device 15 (e.g. removable storage drive, removable memory module, magnetic tape drive, optical disk drive, computer readable medium having stored in the same computer and/or data software), user interface device 16 (eg keyboard, touch screen, key pad, pointing device), and a communication interface 17 (eg modem, a network interface (such as an Ethernet card), a communication port, or a PCMCIA card and connector). The communication interface 17 allows software and data to be transferred between the computer system and external devices. The system 10 further includes a communication infrastructure 18 (e.g., a communication bus, a pass-through bus, or network) to which the aforementioned devices/modules 11 to 17 are connected.
    The information transferred via the communication interface 17 may be in the form of signals such as electronic, electromagnetic, optical or other signals capable of being received by the communication interface 17 via a communication link that carries the signals and can be implemented using wire or cable; optical fibers; a phone line; a cell phone link; a radio frequency (RF) link; and/or other communication channels. Computer program instructions representing the block diagram and/or flowcharts can be loaded into a computer, programmable data processing equipment; or processing devices to cause a series of operations performed thereon to produce a computer-implemented process.
    Embodiments of the present invention have been described with reference to flowchart illustrations and/or block diagrams of methods, equipment (systems) and computer program products in accordance with embodiments of the invention. Each block of such illustrations/diagrams, or combinations thereof, can be implemented by computer program instructions. Computer program instructions when provided to a processor produce a machine such that the instructions, which execute through the processor, create a means to implement the functions/operations specified in the flowchart and/or block diagram. Each block in the block/flowchart diagrams may represent a hardware and/or software or logic module, implementing embodiments of the present invention. In alternative implementations, the functions indicated in the blocks may occur out of the order indicated in the figures, simultaneously, etc.
    The terms "computer program medium", "computer usable medium", "computer readable medium", and "computer program product" are used to refer generally to the medium; such as main memory, secondary memory, removable storage unit, a hard disk installed in the hard disk drive. Computer program products are a means of providing software for the computer system. The computer readable medium allows the computer system to read data, instructions, messages or message packets, and other computer readable information from the computer readable medium. Computer-readable media, for example, can include non-volatile memory, such as a floppy disk, ROM, flash memory, disk drive memory, or a CD-ROM, and other permanent storage media. It is useful, for example, for transporting information, such as computer instructions and data, between computer systems. Computer program instructions may be stored on a computer-readable medium that can guide a computer, other programmable data processing equipment, or other devices to function in a specific manner, such that instructions stored on the computer-readable medium produce an industrial product including instructions that implement the function/action specified in the flowchart and/or block diagram, or blocks.
    Computer programs (ie computer control logic) are stored in main memory and/or secondary memory. Computer programs can also be received via a communication interface. Such computer programs, when executed, enable the computer system to carry out the features of the present invention discussed herein. In particular, computer programs, when executed, enable the multi-core processor to carry out the characteristics of the computer system. Such computer programs represent computer system controllers.
    As known to those skilled in the art, the aforementioned exemplary architectures described above in accordance with the present invention can be implemented in various ways, such as program instructions for execution by a processor, such as software modules, microcode, such as computer program product on computer readable media, such as logic circuits, such as application-specific integrated circuits, such as firmware, such as consumer electronic devices, etc., in wireless devices, in wireless transmitters, receivers, transceivers in networks wireless, etc. Additionally, embodiments of the invention may take the form of a fully hardware embodiment, a fully software embodiment, or an embodiment containing both hardware and software elements.
    Although the present invention has been described with reference to certain versions of the same, however, other 15 versions are possible. Therefore, the essence and scope of the appended claims should not be limited to the description of the preferred versions contained therein.
    权利要求:
    Claims (15)
    [0001]
    1. WIRELESS COMMUNICATION METHOD comprising: signaling a relay selection process for one or more wireless stations to obtain relay operating parameters comprising presence period and multi-band information of multiple candidate wireless relay stations ; evaluate the relay operating parameters of multiple candidate wireless relay stations; select a wireless relay station from among multiple candidate wireless relay stations based on the evaluation; and initiating the transmission of a wireless communication to the selected wireless relay station via a wireless communication means.
    [0002]
    2. Method according to claim 1, further comprising: establishing relay operations using the selected wireless relay station and performing wireless communication between the wireless stations through the selected wireless relay station through a means of wireless communication.
    [0003]
    A method according to claim 1, characterized in that: performing wireless communication using the selected wireless relay station comprises an initiating wireless station and a wireless responder station communicating wirelessly through the relay station wireless selected; the selected wireless relay station wirelessly relays communications from the initiating wireless station to the responding wireless station; and the selected wireless relay station wirelessly relays the communications from the responding wireless station to the initiating wireless station.
    [0004]
    4. The method of claim 3, wherein: selecting a wireless relay station from among the multiple candidate wireless relay stations further comprising the initiating wireless station or the responder wireless station selecting a relay station among multiple candidate wireless relay stations.
    [0005]
    5. Method according to claim 3, characterized by: selecting a wireless relay station among the multiple wireless relay stations, candidates further comprising the initiating wireless station and the responding wireless station by collaboratively selecting a wireless relay station among the multiple candidate wireless relay stations.
    [0006]
    The method of claim 3, further comprising: a coordinating wireless station providing a list of multiple candidate wireless relay stations; and evaluating the relay operating parameters of multiple wireless relay stations, candidates for selecting a wireless relay station.
    [0007]
    7. The method of claim 6, wherein: selecting a wireless relay station from among multiple candidate wireless relay stations further comprises the initiating wireless station sending a relay search request frame to the coordinating wireless station, wherein the coordinating wireless station provides the list of multiple wireless relay stations, candidates for the initiating wireless station and responding wireless station.
    [0008]
    8. The method of claim 7, further comprising: an initiating wireless station selecting a wireless relay station among multiple candidate wireless relay stations upon obtaining and evaluating wireless communication link measurements for multiple candidate wireless relay stations.
    [0009]
    The method of claim 8, further comprising: the coordinating wireless station collecting the wireless communication link measurements for the multiple candidate wireless relay stations and providing the measurements to the initiating wireless station .
    [0010]
    10. WIRELESS COMMUNICATION STATION, characterized in that it comprises: a relay selection module that signals a relay selection process to one or more wireless stations to obtain retransmission operational parameters comprising period of presence and multi-band information. multiple candidate wireless relay stations, wherein the relay selection module evaluates the relay operating parameters of multiple candidate wireless relay stations and selects a wireless relay station from among the multiple wireless relay stations, candidates based on the assessment; and a communication layer that initiates the transmission of a wireless communication to the selected wireless relay station via a wireless communication means.
    [0011]
    The wireless communication station of claim 10, wherein: the relay selection module obtains a list of multiple candidate wireless relay stations from a coordinating wireless station and the relay selection module evaluate the operational parameters of multiple candidate wireless relay stations.
    [0012]
    The wireless communication station of claim 11, wherein: the relay selection module sends a relay search request frame to the coordinating wireless station, wherein the coordinating wireless station provides the list multiple wireless relay stations candidate for the wireless communication station.
    [0013]
    13. COORDINATOR WIRELESS COMMUNICATION STATION, comprising: a relay selection module that selects a wireless relay station among multiple candidate wireless relay stations, for an initiating wireless station and for a wireless responder station; wherein the relay selection module signals a relay selection process to one or more wireless stations to obtain the relay operating parameters comprising presence period and multi-band information of multiple candidate wireless relay stations, such as so the relay selection module evaluates the operating parameters of multiple candidate wireless relay stations and selects a wireless relay station based on the assessment.
    [0014]
    The coordinating wireless communication station of claim 24, wherein: the relay selection module determines a list of multiple candidate wireless relay stations and evaluates the operating parameters of the multiple candidate wireless relay stations for select a wireless relay station.
    [0015]
    The coordinating wireless communication station according to claim 14, characterized in that: the relay selection module provides the list of multiple candidate wireless relay stations for the initiating and responder wireless stations; and the relay selection module selects a wireless relay station from among the multiple candidate wireless relay stations by obtaining and evaluating wireless communication link measurements for the multiple candidate wireless relay stations from the wireless stations initiator and responder.
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    同族专利:
    公开号 | 公开日
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    WO2011129654A2|2011-10-20|
    IN2012MN02549A|2015-05-22|
    RU2529891C2|2014-10-10|
    CA2796652A1|2011-10-20|
    US9026044B2|2015-05-05|
    BR112012026500A2|2017-12-12|
    KR101857793B1|2018-05-14|
    KR20130066577A|2013-06-20|
    US20110256828A1|2011-10-20|
    MX2012012042A|2013-03-07|
    JP2013526146A|2013-06-20|
    JP6216758B2|2017-10-18|
    JP5858983B2|2016-02-10|
    CA2796652C|2016-08-09|
    JP2016007083A|2016-01-14|
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    法律状态:
    2018-12-26| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-03-17| B15K| Others concerning applications: alteration of classification|Free format text: AS CLASSIFICACOES ANTERIORES ERAM: H04B 7/14 , H04W 88/04 Ipc: H04B 7/26 (2006.01), H04W 76/10 (2018.01), H04W 84 |
    2020-03-17| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-08-03| B350| Update of information on the portal [chapter 15.35 patent gazette]|
    2021-08-10| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-08-17| B350| Update of information on the portal [chapter 15.35 patent gazette]|
    2021-08-31| 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 15/04/2011, 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
    US32482510P| true| 2010-04-16|2010-04-16|
    US61/324,825|2010-04-16|
    PCT/KR2011/002711|WO2011129654A2|2010-04-16|2011-04-15|Method and system for responder-aware relay station selection in wireless communication networks|
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