WO2017012125A1 - Procédé, dispositif et système de coopération synchrone pour un point d'accès sans fil - Google Patents

Procédé, dispositif et système de coopération synchrone pour un point d'accès sans fil Download PDF

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Publication number
WO2017012125A1
WO2017012125A1 PCT/CN2015/084959 CN2015084959W WO2017012125A1 WO 2017012125 A1 WO2017012125 A1 WO 2017012125A1 CN 2015084959 W CN2015084959 W CN 2015084959W WO 2017012125 A1 WO2017012125 A1 WO 2017012125A1
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sta
channel
aps
message
communication
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PCT/CN2015/084959
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English (en)
Chinese (zh)
Inventor
庞继勇
刘亚林
马驰翔
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华为技术有限公司
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Priority to PCT/CN2015/084959 priority Critical patent/WO2017012125A1/fr
Priority to CN201580081435.6A priority patent/CN107736075B/zh
Priority to CN202010212161.2A priority patent/CN111556583B/zh
Publication of WO2017012125A1 publication Critical patent/WO2017012125A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]

Definitions

  • the embodiments of the present invention relate to communication technologies, and in particular, to a wireless access point synchronization cooperation method, device, and system.
  • APs can coordinate in the dimensions of frequency, space, time and power, and work collaboratively based on well-coordinated strategies and consensus.
  • the direct handshake between the APs is used to coordinate the information and start the cooperation mode.
  • the station referred to as STA
  • STA The way to transfer to coordinate information and turn on collaboration mode.
  • the cooperation request sent by an AP can successfully receive the collaboration request only when the corresponding cooperative AP is in an idle state.
  • the competition of the wireless channel is usually a carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) mechanism, that is, the APs usually work asynchronously.
  • CSMA/CA carrier Sense Multiple Access with Collision Avoidance
  • neighboring APs may be in different channel busy states. Therefore, the coordination interaction time between the APs to be coordinated is difficult to determine, the coordination information may not be successfully sent or received, or the channel to be cooperated by the AP to be preempted by the STA or other APs, and the collaboration fails.
  • the wireless access point synchronization cooperation method, device and system provided by the embodiments of the present invention can be effective Improve the feasibility of inter-AP collaborative work, thereby improving the spectrum multiplexing gain in high-density scenarios.
  • a wireless access point synchronization cooperation method including:
  • the STA sends a first message, where the first message is used to indicate that at least two APs work together using the first channel, where the first channel competes for the STA to obtain a channel for sending the first message.
  • the STA before the sending, by the STA, the STA, further includes: the STA receiving, by the STA, the indication information that the first message is requested, where the indication is The information is used to indicate that the STA contends for a channel for the at least two APs; the STA contends for a channel according to the indication information.
  • the indication information includes an identifier of the at least two APs.
  • the method further includes: determining, by the STA, the at least two APs according to the identifiers of the at least two APs.
  • the indication information includes a collaboration set identifier.
  • the STA further includes: determining, by the STA, the at least two APs according to the correspondence between the collaboration set identifier and the identifiers of the at least two APs and the collaboration set identifier.
  • the STA to the at least one of the at least two APs Before the AP reports the communication AP set of the STA, the method further includes: the STA receiving a report request sent by at least one of the at least two APs, where the report request is used to indicate the STA The communication AP set is reported.
  • the method before the STA sends the first message, the method further includes: The STA determines that the APs corresponding to the identifiers of the at least two APs are all within the communication radius of the STA.
  • the method further includes: The STA receives a response message sent by all the APs of the at least two APs, where the response message is used to indicate that the AP that sends the response message agrees to use the first channel for cooperative operation.
  • the method further includes: The STA does not receive a response message sent by all the APs of the at least two APs, where the response message is used to indicate that the AP that sends the response message agrees to cooperate with the first channel, and the STA continues to contend for the channel. .
  • the indication information further includes a collaborative work rule, where the collaboration The working rule is used by the at least two APs to cooperate according to the collaborative work rule; before the STA sends the first message, the STA further includes: the STA adding the collaborative work rule to the first message.
  • the indication information further includes a cooperative working rule,
  • the cooperative working rule is used for the at least two APs to cooperate according to the collaborative working rule; after the STA receives the response message sent by all the APs of the at least two APs, the method further includes: the STA At least two APs send the collaborative work rule.
  • the second aspect provides a method for synchronizing wireless access points, including:
  • the first AP receives the first message sent by the first STA, where the first message is used to indicate that the first AP cooperates with the at least one second AP, and the at least one second AP is in the Within the communication radius of the first STA, the first channel is a channel for the first STA to compete for obtaining the first message;
  • the first AP cooperates with the first channel and the at least one second AP.
  • the device further includes a fourth determining module, configured to determine The APs corresponding to the identifiers of the at least two APs are all within the communication radius of the STA.
  • the receiving module is further configured to: receive the at least two A response message sent by all the APs in the AP, where the response message is used to indicate that the AP that sent the response message agrees to use the first channel for cooperative operation.
  • the device further includes an indication module, if: The STA does not receive the response message sent by all the APs of the at least two APs, and indicates that the channel contention module continues to contend for the channel, and the response message is used to indicate that the AP that sends the response message agrees to use the first channel. Work together.
  • the indication information further includes a collaborative work rule, where the collaboration The working rule is used by the at least two APs to work collaboratively according to the collaborative work rule; the device further includes: a second information editing module, configured to add the collaborative work rule to the first message.
  • the sending module is further configured to: the at least two The APs send the collaborative work rules.
  • a receiving module configured to receive a first message sent by the first STA, where the first message is used to instruct the first AP to work together using the first channel and the at least one second AP, where the at least one second The AP is in a communication radius of the first STA, and the first channel is a channel for the first STA to compete for obtaining the first message;
  • a collaboration module configured to perform collaborative work by using the first channel and the at least one second AP.
  • the apparatus further includes: a sending module, configured to send, to the at least one candidate STA, a request for the first message
  • the indication information is used to indicate that the at least one candidate STA is a contention channel for the first AP and the at least one second AP, and the at least one candidate STA includes the first STA.
  • the indication information includes an identifier of the first AP and the at least one second AP, The identifiers of the first AP and the at least one second AP are used by the at least one candidate STA to determine a first AP and at least one second AP that work together.
  • the sending module is further configured to use the first channel And sending the collaborative working rule to the at least one second AP, where the first AP has a higher priority than the at least one second AP.
  • a transmitter a receiver, a memory, and a processor coupled to the memory;
  • the processor is further configured to determine a communication AP of the STA The set, the any one of the communication APs is in the communication radius of the STA; the sender is further configured to: report the communication AP set of the STA to the at least one of the at least two APs .
  • the receiver is further configured to: receive the at least two A response message sent by all the APs in the AP, where the response message is used to indicate that the AP that sent the response message agrees to use the first channel for cooperative operation.
  • the transmitter is further configured to: the at least two The APs send the collaborative work rules.
  • a first AP including:
  • the transmitter is configured to send, to the at least one candidate STA, indication information for requesting the first message, where the indication information is used to indicate
  • the at least one candidate STA is a contention channel for the first AP and the at least one second AP, and the at least one candidate STA includes the first STA.
  • the indication information includes an identifier of the first AP and the at least one second AP, The identifiers of the first AP and the at least one second AP are used by the at least one candidate STA to determine a first AP and at least one second AP that work together.
  • the indication information includes a collaboration set identifier, where the collaboration set And determining, by the at least one candidate STA, the first AP and the at least one second AP according to the correspondence between the cooperation set identifier and the identifiers of the first AP and the at least one second AP.
  • the indication information includes a collaboration set identifier, where the collaboration set And identifying an identifier used by the first STA to add the first message according to the collaboration set identifier.
  • the receiver is further configured to receive the at least one candidate a communication AP set of the at least one candidate STA reported by the STA, any one of the communication AP sets being within a communication radius of an STA reporting the communication AP set; the processor is further configured to perform according to the communication The AP set determines the at least one candidate STA.
  • the transmitter is further configured to broadcast a sending response message,
  • the response message is used to indicate that the first AP agrees to use the first channel for cooperative work.
  • the transmitter is further configured to use the first channel And sending the collaborative working rule to the at least one second AP, where the first AP has a higher priority than the at least one second AP.
  • the transmitter is further configured to use the first The channel sends the coordinated working rule to the at least one second AP, where the first AP is an AP accessed by the first STA.
  • a seventh aspect a wireless access point synchronization cooperation system, comprising: at least one STA having the apparatus provided by the foregoing third aspect, and at least two first APs having the apparatus provided by the foregoing fourth aspect; the at least one The STA includes STAs capable of communicating with the at least two first APs.
  • the eighth aspect provides a wireless access point synchronization cooperation system, including: at least one STA provided by the foregoing fifth aspect, and at least two first APs provided by the foregoing sixth aspect; the at least one STA includes STAs that communicate with at least two first APs.
  • FIG. 1 is a schematic diagram of an application scenario of a wireless access point synchronization cooperation method according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a wireless access point synchronization cooperation method according to an embodiment of the present invention
  • FIG. 3 is a flowchart of another wireless access point synchronization cooperation method according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of still another method for synchronizing wireless access points according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a frame of a first message sent by a STA
  • FIG. 7 is a schematic structural diagram of a data packet of a first message sent by a STA
  • FIG. 8 is a schematic diagram of a first wireless access point synchronization cooperation apparatus according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of a second wireless access point synchronization cooperation apparatus according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of a fourth wireless access point synchronization cooperation apparatus according to an embodiment of the present invention.
  • FIG. 12 is a schematic diagram of a STA according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic diagram of an AP according to an embodiment of the present invention.
  • a wireless AP is an access point used in a wireless network to cause a wireless terminal device to enter a wired network.
  • it is responsible for assisting the coordination and cooperation process of multiple APs, helping the AP to contend for the channel through STAs capable of communicating with multiple coordinated APs, and using the channel after the STA preempts the channel.
  • the rights are simultaneously forwarded to the cooperating AP to trigger a synchronized idle channel, and the cooperating AP can interactively coordinate and cooperate in the channel.
  • the STA may be, for example, a user equipment such as a smartphone, a notebook computer, or a PAD that is connected to an AP.
  • FIG. 1 is a schematic diagram of an application scenario of a wireless access point synchronization cooperation method according to an embodiment of the present invention.
  • at least two adjacent APs may form one cooperation set, and the overlapping coverage areas of the APs in the cooperation set have at least one STA capable of communicating with the APs in the cooperation set.
  • the STA in the overlapping coverage area of the cooperation set AP detects that the channel is idle, the node that is in the communication range of the STA has a high probability that it is in an idle state, so that the APs in the collaboration set can simultaneously Obtain channel usage transfer rights and interact and coordinate information within this channel.
  • STA1 can communicate with AP1, AP2, and AP3.
  • AP1 and AP2 can form a collaboration set.
  • AP1 and AP3 can form a collaboration set.
  • AP2 and AP3 can form a collaboration set.
  • AP1, AP2, and AP3 can also form a collaboration set. These collaboration sets are available through STA1 Auxiliary to complete the coordination and collaboration process.
  • STA1, STA2, STA3, and STA4 are both capable of communicating with AP1 and AP2, STA1, STA2, STA3, and STA4 can assist the cooperative set composed of AP1 and AP2 for channel contention.
  • STA1, STA2, STA3, and STA4 can assist the cooperative set composed of AP1 and AP2 for channel contention.
  • the greater the number of users (STAs) in the overlapping coverage area of the cooperative set AP the greater the chance that the AP will gain access to the channel using the transfer rights.
  • the STA competes for the channel
  • the STA sends a first message, where the first message is used to indicate that at least two APs work together using the first channel, where the first channel competes with the STA to obtain a channel for sending the first message.
  • the neighboring AP1 and AP2 form a cooperative set, and STA1 to STA4 in the overlapping coverage area of AP1 and AP2 may be users accessing AP1 or AP2, and STA1 may also be a user accessing AP3.
  • STA1 to STA4 can listen to signals from AP1 and AP2, AP1 and AP2 can also listen to STA1 to STA4 if the transmit power of the AP and STA are equal. If the transmit powers of the AP and the STA are not equal, the STA can determine whether the self-transmitted signal can be received by the AP according to the power difference between the AP and the STA.
  • the first AP works in cooperation using the first channel and the at least one second AP.
  • the adjacent AP1 and AP2 form a cooperation set, and STA1 to STA4 in the overlapping coverage area of AP1 and AP2 can communicate with AP1 and AP2.
  • AP1 and AP2 first receive the channel usage transfer message (the first message) sent by STA1, and AP1 and AP2 know that they can cooperate through the channel (first channel) obtained by STA1 competition.
  • AP1 and AP2 may broadcast a response message for the first channel usage right after receiving the first message, and the response message is used to notify all STAs that help AP1 and AP2 compete for channels and neighboring other sites (including APs and STAs) will work together using the first channel.
  • the STA sends a first message, where the first message is used to indicate that at least two APs work together using the first channel, where the first channel competes with the STA to obtain a channel for sending the first message;
  • At least two APs work together using the first channel.
  • Adjacent AP1 and AP2 form a cooperative set
  • STA1 to STA4 in the overlapping coverage area of AP1 and AP2 may be users accessing AP1 or AP2.
  • STA1 may also be a user accessing AP3.
  • STA1 to STA4 can communicate with AP1 and AP2, and STA1 to STA4 can assist the cooperative set competition channel composed of AP1 and AP2.
  • STA1 to STA4 also use the CSMA/CA mechanism to detect the busy state of the listening channel.
  • STA1 detects that the channel is idle first and then backs off, STA1 obtains the channel usage right at that moment. At this time, the nodes in the communication range of STA1 are both It can be considered to be in an idle state. After STA1 takes the lead to back off and obtains the channel usage right, it simultaneously transmits a channel use transfer message (first message) to AP1 and AP2, and hands over the competing channel (first channel) usage right to AP1 and AP2. Both AP1 and AP2 correctly receive the channel usage transfer message from STA1, and AP1 and AP2 obtain the channel usage right at the same time, then AP1 and AP2 can work together through the channel (first channel) that STA1 contends.
  • first message channel use transfer message
  • AP1 and AP2 may broadcast a response message for the first channel usage right after receiving the first message, and the response message is used to notify all the help AP1.
  • STAs that compete with AP2 for the channel and other neighboring stations (including APs and STAs) will use the first channel to work together.
  • STA1 can judge according to the response message it receives. If STA1 does not receive the response message sent by AP1 and AP2, or only receives the response message sent by one of AP1 and AP2, STA1 continues to contend for the channel.
  • STA1 after STA1 sends the first message of the first message, it can wait for a fixed time interval. If a response message sent by any AP is still not received after a fixed time interval, STA1 can determine. AP1 and AP2 did not successfully receive the first message and continue to perform channel contention and resend the first message. On the other hand, STA1 may not receive the response message sent by AP1 and AP2 at the same time. After STA1 receives the response message sent by one of AP1 and AP2, STA1 may wait for a fixed time interval, if after a fixed time interval. If the response message sent by another AP is still not received, STA1 may determine that another AP has not successfully received the first message first message, and continues to perform channel contention and resend the first message.
  • the cooperation between AP1 and AP2 can be triggered by the STA side or by the AP side.
  • the STA side triggers that is, one or more STAs in STA1 to STA4 spontaneously assist AP1 and AP2 in channel contention.
  • the AP side triggers that is, one or more STAs in STA1 to STA4 receive the instruction to request the first message.
  • AP1 and AP2 perform channel competition, and the indication information is used to indicate that the STA contends for the channel for AP1 and AP2.
  • AP1 or AP2 may send indication information to one or more STAs of STA1 to STA4; or AP1 and AP2 both to one or more of STA1 to STA4.
  • the STA sends the indication information; if the STA1 can communicate with the AP1 to the AP3 at the same time, the AP3 may also send an indication message to the STA1, instructing the STA1 to assist the AP1 and the AP2 to contend for the channel.
  • the indication information of the requesting the first message may include the identifiers of the AP1 and the AP2, and the identifiers of the AP1 and the AP2 are, for example, a basic service set identifier (BSSID).
  • BSSID basic service set identifier
  • the indication information requesting the first message may further include an identifier (ID) of the cooperation set composed of AP1 and AP2.
  • the WLAN network may further include a wireless controller (Access Controller, AC for short) for managing all the APs, and the AC may allocate a corresponding collaboration set ID for the cooperation set composed of two or more APs. That is, each collaboration set ID has a unique correspondence with the ID of the AP in the collaboration set.
  • the AC allocates a collaboration set ID of S1 for the cooperation set composed of AP1 and AP2, and the STA that receives the indication information of the S1 can be uniquely determined according to the correspondence between the S1 and the collaboration set ID and the ID of the AP included in the collaboration set.
  • AP1 and AP2 can also negotiate to share the same collaboration set ID.
  • the indication information requesting the first message may further include a collaboration set ID.
  • the STA may only contend for the cooperation set corresponding to the ID according to the indication information, and does not need to determine which APs are included in the cooperation set.
  • the STA that successfully contends to the channel may add the cooperation set ID in the indication information to the first message as the identifier of the first message, and broadcast the first message.
  • the AP that receives the first message may determine whether it belongs to the collaboration set according to the identifier of the first message, accept the first message if it belongs, and ignore the first message if it does not belong. It can be understood that the AP can decide which STAs to send indication information to.
  • the STA may determine, according to the signal strength of the monitored AP, an AP to send an access request message, and the AP may send an access response message to the corresponding STA.
  • the STA can also determine which APs are in the air according to the transmit power of the AP and the AP that can be monitored. Within the maximum effective communication radius.
  • the STA can report to the APs it accesses the set of APs that can communicate with each other, that is, all APs within the communication radius of the STA.
  • the AP can determine which APs can work with each other according to the set of communication APs reported by the STA. Obviously, the AP can also determine which STAs can be requested to assist channel competition when it cooperates with certain APs according to the STAs of the communication AP set to which it reports.
  • the AP may also send the collaboration set identifier set to the STA according to the communication AP set reported by the STA. Obviously, the AP may determine whether an STA can effectively serve a certain cooperation set according to the communication AP set reported by the STA. At this time, the AP may decide to send the ID indication information including the cooperation set to the STA that can effectively serve a certain cooperation set.
  • the STA may directly include the set of the communication APs in the access request message and report the AP to the AP.
  • the AP may also include the cooperation set identifier set in the access response message and send it to the STA. It is worth mentioning that the access response message may even directly include indication information of the first message requesting for a certain cooperation set.
  • AP1 then knows that STA1 is in the overlapping coverage area of AP1, AP2 and AP3, and the signal of STA1 can be simultaneously received by AP1, AP2 and AP3.
  • AP1 can set a collaboration set composed of AP1 and AP2, a collaboration set composed of AP1 and AP3, a collaboration set composed of AP2 and AP3, and a collaboration set identifier corresponding to the collaboration set composed of AP1, AP2, and AP3 (such as S1 and S2).
  • S3, S4 are sent to STA1.
  • these collaboration set identifiers can be directly included in the access response message and sent to STA1.
  • the AP1 may also carry indication information requesting the STA1 to assist the AP1 and the AP2 to perform channel competition in the access response message.
  • the STA since the STA is usually a mobile user equipment, the STA location will constantly change. As the location of the STA changes, the set of APs that the STA can communicate with will also change. As a preferred implementation manner, the STA can actively report the AP set that it can communicate to the AP that it accesses at any time after the network access. Alternatively, the AP may also initiate a report of the communication AP set report of the STA to the STA at any time after the STA accesses the network, and the STA reports the report to the AP after receiving the report request. Communication AP collection.
  • the STA may report the communication AP set to the AP that is accessed by the STA, and may also report its own communication AP set to some or all of the APs in the communication AP set.
  • the AP may send a communication AP set report request to some or all STAs within the AP communication range, in addition to sending a communication AP set report request to the STA that accesses itself.
  • the indication information of the request first message sent by the AP broadcast may include an ID of a plurality of APs indicating cooperation, or a collaboration set ID corresponding to a collaboration set composed of multiple APs.
  • the indication information contained in the control/management frame is generally broadcast information, and all STAs within the control/management frame reception range can receive the indication information.
  • the STA that has received the broadcast indication information first determines the AP to be coordinated, and then performs channel contention after determining that it can communicate with each of the APs to be coordinated.
  • the AP can determine that a certain STA can effectively serve certain cooperation sets according to the communication AP set reported by the STA, and the AP directly specifies the STAs that are expected to participate in channel competition.
  • the indication information of the first message requesting the broadcast may include the identifier of the STA that is expected to participate in the channel competition.
  • only the corresponding STA may receive the broadcast indication information and perform channel competition directly, and the STA that successfully contends to the channel may indicate The collaboration set ID in the information is added to the first message as an identifier of the first message, and the first message is broadcasted.
  • the AP may also directly send an indication message requesting the first message to the STA that desires to participate in channel competition.
  • the collaborative work rule may be included in the indication information for requesting the first message, and the STA determines, according to the indication information, that the participant can participate in the channel competition, and then cooperates after successfully competing to the first channel.
  • the rule is carried in the first message and sent to the AP in the collaboration set.
  • the STA may temporarily store the cooperative working rule, wait for the AP in the cooperation set to send the response message of the first channel usage right, and immediately cooperate with the STA after receiving the response message of the first channel usage right sent by all the APs in the cooperation set.
  • the rule is sent to the AP in the collaboration set. In this way, the overhead of coordinated interaction of the APs in the collaboration set through the first channel can be saved.
  • the AP may also carry its own priority information in the indication. Information.
  • the STA may send the coordinated working rule in the indication information sent by the AP with the highest priority to the other low-priority AP according to the priority of the AP that sends the indication information.
  • the AP to be coordinated may exchange the cooperative working rule through the first channel after obtaining the usage right of the first channel that the STA competes.
  • the following optional methods may be used for coordination:
  • the APs participating in the collaboration may be set with different priorities.
  • the high-priority APs have the coordinated initiative, and the APs with the highest priority in the collaboration set send the coordinated work rules to other APs in the collaboration set through the first channel.
  • the AP that is sent by the STA that sends the first message has the coordinated initiative, and the AP accessed by the STA that sends the first message
  • the collaborative work rule is sent to other APs in the collaboration set through the first channel.
  • the STA may also inform the AP in the cooperation set through the first message sent by the STA, and participate in the current channel competition is the indication information of which AP is received. For example, after STA1 first contends to the channel, the AP1 and AP2 may be notified by the first message. When participating in this channel competition is the indication information of the first message of the request of AP1, AP1 has the coordinated initiative.
  • an appropriate coordination method can be selected according to different situations.
  • this embodiment also schematically illustrates the technical solution of the present invention by using a frame structure of the first message.
  • FIG. 5 is a schematic diagram of a frame structure of a first message sent by a STA.
  • an FC Flexible Control
  • the Coordination Group ID refers to the collaboration set identifier, or may list the identifiers of all APs in the collaboration set, that is, the collaboration AP list.
  • the TA is the address of the STA that sends the first message.
  • the triggering AP ID (Trigger AP ID) refers to the address of the AP that triggers the current channel competition. Obviously, both the TA and Trigger AP IDs are optional, while other unillustrated cells have the same meaning as the current standard.
  • the FCS is a Frame Check Sequence.
  • FIG. 6 is a schematic diagram of a frame structure of a first message sent by another STA.
  • the frame structure of the first message shown in FIG. 5 may further include Coordination Information, and the specific collaborative work rule may be It is included in the indication information that the AP that requests the first message to send to the STA, so when the STA sends the first message, the collaborative work rule can also be included.
  • the collaborative work rules may specifically include information such as the coordinated transmission technology, mechanism, configuration parameters, and synchronization duration of the coordinated transmission.
  • the frame structure of the first message shown in FIG. 5 and FIG. 6 is only a possible MAC frame structure of the first message, which is mainly indicated by the frame type indication in the FC in the MAC frame header.
  • the MAC frame is distinguished.
  • the corresponding prompt information may be added in the physical layer header of the MAC frame.
  • the channel contention module 81 can be used to contend for a channel.
  • the sending module 82 is configured to send a first message, where the first message is used to indicate that at least two APs work together using the first channel, where the first channel is a channel used by the STA to send the first message.
  • FIG. 10 is a schematic diagram of a third wireless access point synchronization cooperation apparatus according to an embodiment of the present invention.
  • the apparatus may be specifically configured in an AP, and may be used to implement the wireless connection provided by the embodiment shown in FIG. 3 and FIG. 4 of the present invention.
  • the wireless access point synchronization cooperation apparatus provided in this embodiment includes a receiving module 101 and a cooperation module 102.
  • the receiving module 101 may be configured to receive a first message sent by the first STA, where the first message is used to indicate that the first AP uses the first channel and the at least one second AP to work together, and the at least one second AP is in the first STA. Within the communication radius, the first channel competes for the first STA to obtain a channel for transmitting the first message.
  • the collaboration module 102 can be configured to cooperate using the first channel and the at least one second AP.
  • FIG. 12 is a schematic diagram of a STA according to an embodiment of the present invention.
  • the STA provided in this embodiment may be used to implement the wireless access point synchronization cooperation method provided by the embodiment shown in FIG. 2 and FIG. 4 of the present invention. Narration.
  • the STA provided by this embodiment includes a transmitter 121, a receiver 122, a memory 123, and a processor 124 coupled to the memory 123.
  • the processor 124 can be used to contend for a channel.
  • the sender 121 may be configured to send the first message, where the first message is used to indicate that at least two APs work together using the first channel, where the first channel is a channel that the STA contends for sending the first message.
  • the receiver 122 may be configured to receive indication information requesting the first message, where the indication information is used to indicate that the STA contends for the channel for the at least two APs.
  • the processor 124 can be configured to contend for the channel based on the indication information.
  • the processor 124 may be further configured to determine the at least two APs according to the identifiers of the at least two APs.
  • the processor 124 may be further configured to determine, according to the correspondence between the collaboration set identifier and the identifiers of the at least two APs, and the collaboration set identifier, determining at least two AP.
  • the processor 124 may be further configured to add the identifier of the first message according to the collaboration set identifier.
  • the processor 124 may be further configured to determine a communication AP set of the STA, where any of the APs in the set of communication APs are within a maximum effective communication radius of the STA. Further, the sender 121 may be further configured to report the STA's communication AP set to at least one of the at least two APs.
  • the receiver 122 is further configured to receive at least two APs.
  • a report request sent by at least one AP, the report request is used to instruct the STA to report its communication AP set.
  • the processor 124 may be further configured to determine that the STA can communicate with the AP corresponding to the identifiers of the at least two APs.
  • the receiver 122 is further configured to: receive a response message sent by all APs of the at least two APs.
  • the response message is used to indicate that the AP that sent the response message agrees to use the first channel for cooperative work.
  • the processor 124 may be further configured to: if the STA does not receive the response message sent by all the APs of the at least two APs, continue to contend for the channel.
  • the indication information further includes a collaborative work rule
  • the processor 124 is further configured to: add the collaborative work rule to the first message.
  • the collaborative work rule is used for at least two APs to work collaboratively according to the collaborative work rule.
  • the STA provided in this embodiment can be used to implement the method for synchronizing the wireless access point according to the embodiment shown in FIG. 2 and FIG. 4, and the implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 13 is a schematic diagram of an AP according to an embodiment of the present invention.
  • the AP provided in this embodiment may be used to implement the wireless access point synchronization cooperation method provided by the embodiment shown in FIG. 3 and FIG. 4 of the present invention. Narration. It can be understood that the AP provided in this embodiment may be the first AP in the foregoing embodiment, or may be the second AP in the foregoing embodiment.
  • the AP provided in this embodiment includes a transmitter 131, a receiver 132, a memory 133, and a processor 134 coupled to the memory 133.
  • the receiver 132 may be configured to receive the first message sent by the first STA, where the first message is used to indicate that the first AP uses the first channel and the at least one second AP to work together, and the at least one second AP is in the first STA.
  • the first channel is the channel used by the first STA to contend for transmitting the first message.
  • the processor 134 can be configured to cooperate using the first channel and the at least one second AP.
  • the sender 131 may be configured to send the contention channel indication information to the at least one candidate STA, where the indication information is used to indicate that the at least one candidate STA is a contention channel for the first AP and the at least one second AP.
  • the at least one candidate STA includes the first STA.
  • the indication information may include the first AP and the at least one The identifier of the second AP, the identifier of the first AP and the at least one second AP is used by the at least one candidate STA to determine the first AP and the at least one second AP that work together.
  • the receiver 132 is further configured to receive, by the at least one candidate STA, the communication AP set of the at least one candidate STA, where any one of the APs in the communication AP set is in the STA that reports the communication AP set. Within the maximum effective communication radius. Further, the processor 134 is further configured to determine at least one candidate STA according to the communication AP set.
  • the processor 134 is further configured to determine the at least one second AP according to the communication AP set.
  • the sender 131 may be further configured to send, to the at least one candidate STA, a report request, where the report request is used to indicate that the at least one candidate STA reports the communication AP set.
  • the transmitter 131 is further configured to broadcast a response message, where the response message is used to indicate that the first AP agrees to cooperate with the at least one second AP by using the first channel.
  • the first AP provided in this embodiment may be used to implement the wireless access point synchronization cooperation method provided by the embodiment shown in FIG. 3 and FIG. 4, and the implementation principle and technical effects are similar, and details are not described herein again.
  • the aforementioned program can be stored in a computer readable storage medium.
  • the program when executed, performs the steps including the foregoing method embodiments; and the foregoing storage medium includes various media that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

Abstract

La présente invention concerne un procédé, un dispositif et un système de coopération synchrone pour des points d'accès sans fil. Un STA permettant de communiquer avec un AP dans un ensemble de coopération aide l'AP dans l'ensemble de coopération à entrer en concurrence pour un canal, et après obtention du canal par mise en concurrence, le STA transfère le droit d'utilisation du canal à l'AP dans l'ensemble de coopération, ce qui permet de déclencher une section de canal inactif synchrone, de sorte que l'AP dans l'ensemble de coopération puisse mettre en œuvre une interaction d'informations de coordination et fonctionner en coopération dans ce canal.<sb />
PCT/CN2015/084959 2015-07-23 2015-07-23 Procédé, dispositif et système de coopération synchrone pour un point d'accès sans fil WO2017012125A1 (fr)

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PCT/CN2015/084959 WO2017012125A1 (fr) 2015-07-23 2015-07-23 Procédé, dispositif et système de coopération synchrone pour un point d'accès sans fil
CN201580081435.6A CN107736075B (zh) 2015-07-23 2015-07-23 无线接入点同步协作方法、设备及系统
CN202010212161.2A CN111556583B (zh) 2015-07-23 2015-07-23 无线接入点同步协作方法、设备及系统

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