WO2021139213A1 - 多链路通信方法、装置及系统 - Google Patents
多链路通信方法、装置及系统 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0231—Traffic management, e.g. flow control or congestion control based on communication conditions
- H04W28/0236—Traffic management, e.g. flow control or congestion control based on communication conditions radio quality, e.g. interference, losses or delay
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/15—Setup of multiple wireless link connections
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/24—Multipath
- H04L45/245—Link aggregation, e.g. trunking
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/08—Load balancing or load distribution
- H04W28/082—Load balancing or load distribution among bearers or channels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
- H04W52/365—Power headroom reporting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
Definitions
- the present invention relates to the field of communication technology, in particular to a multi-link communication method, device and system.
- the multi-link device when the multi-link device communicates with the opposite-end multi-link device, it uses all links that do not support simultaneous data transmission and reception to send data to the opposite-end multi-link device, so that all links that do not support simultaneous data transmission and reception are not supported.
- the link is effectively used, and there is no need to abandon the link due to interference caused by multiple links that do not support simultaneous data transmission and reception, which improves the utilization of link resources in multi-link communication.
- the above-mentioned multi-link communication method can be applied to scenarios where multi-link site devices interact, or multi-link site devices interact with multi-link access point devices.
- the application scenarios are diversified and improved Application flexibility of the multi-link communication method.
- the multi-link device sends instruction information to the opposite multi-link device through the channel corresponding to the second link, including: multi-link device A confirmation frame including indication information is sent to the opposite multi-link device through the channel corresponding to the second link; the confirmation frame is used to indicate whether the multi-link device correctly receives the corresponding message from the opposite multi-link device through the second link. Data sent by the channel.
- the multi-link device can carry the indication information in the confirmation frame corresponding to the data, and send it to the opposite multi-link device through the channel corresponding to the second link.
- the indication information can be carried in the existing In the frame, there is no need to add signaling/frames for carrying indication information, which reduces signaling interaction between devices.
- a multi-link communication method may include: a peer multi-link device receives indication information from the multi-link device, where the indication information is used to indicate the channel corresponding to the first link.
- the channel state is non-idle state.
- the processing module is used to generate link grouping information that supports simultaneous sending and receiving of data for links belonging to different link groups.
- the same link group there are at least two links that do not support sending and receiving data at the same time; it can avoid the situation that any two links in a link group can support sending and receiving data at the same time. Any two links in a link group can support sending and receiving data at the same time, you can continue to group the link group to increase the number of link groups, which is convenient for multi-link equipment and the opposite end multi-link When the device communicates, it can select an available link from more link groups.
- the multi-link device can carry link grouping information in existing frames such as beacon frames, probe response frames, authentication frames, association response frames, or re-association response frames and send it to the peer multi-link It is unnecessary to add new frames for carrying link grouping information, and the signaling interaction between the multi-link device and the opposite multi-link device is reduced.
- the multi-link device can also create a new link grouping action frame, which is specially used to carry link grouping information, without limitation.
- the link grouping information includes the link information of each link; the link information of each link includes the operation level of the link and the link The channel number of the link and the link group identification of the link group where the link is located; or the link information of each link includes the operation level of the link, the channel number of the link, and the link primary and secondary identification of the link; or The link information of each link includes the operation level of the link and the channel number of the link.
- the channel state of the channel corresponding to the secondary link is idle, which may include: when the signal energy on the secondary link is less than the first preset threshold When the channel state is idle; or when the NAV of the channel corresponding to the secondary link is equal to 0, and the signal energy on the secondary link is less than the first preset threshold, the channel state is idle.
- the time difference between the time when data transmission ends on the primary link and secondary link in the same link group can be made smaller than the second preset threshold, and the primary link and secondary link in the same link group can be guaranteed as much as possible.
- the data sent on the road ends at the same time to prevent some links in the same link group from receiving data, while the other links are still sending data, causing the problem of data transmission interference between links that do not support simultaneous data transmission and reception, so as to avoid Affect data reception.
- the communication device further includes a receiving module, which is used to receive instructions from the opposite link device to indicate multiple main links Whether any two main links support the ability to send and receive data at the same time.
- the above-mentioned multi-link communication method can be applied to scenarios where multi-link site devices interact, or multi-link site devices interact with multi-link access point devices.
- the application scenarios are diversified and improved Application flexibility of the multi-link communication method.
- the sending module is used to send instruction information to the opposite multi-link device.
- the receiving module is specifically configured to receive the indication information through the channel corresponding to the second link, including: the peer multi-link device receives from the multi-link The confirmation frame of the remote device, the confirmation frame includes indication information; the confirmation frame is used to indicate whether the multi-link device correctly receives the data sent by the opposite-end multi-link device through the channel corresponding to the second link.
- the technical effect brought by any one of the design methods of the seventh aspect to the ninth aspect can be referred to the technical effect brought about by any possible design of the first aspect to the third aspect, and will not be repeated.
- FIG. 3b is a schematic diagram of a multi-link communication method provided by an embodiment of this application.
- FIG. 13 is a schematic diagram of the composition of a communication device provided by an embodiment of this application.
- FIG. 14 is a schematic diagram of the composition of a communication device provided by an embodiment of the application.
- the chip system may be composed of chips, or may include chips and other discrete devices.
- FIG. 3a is a multi-link communication method provided by an embodiment of the application, which can be used to solve the technical problem that some links in the existing multi-link communication cannot be effectively used, which causes a waste of link resources.
- the method may include:
- any one of the links there is at least one link that does not support simultaneous data transmission and reception with any one of the links; or, in other words, for any one of the links.
- the available link can be selected from more link groups.
- the grouping principle can be any of the following three types:
- the link grouping information generated and sent by the multi-link device is sent to the peer multi-link device, and the multi-link device in the prior art sends any of the multiple links.
- the link grouping information is simple and the amount of information is reduced; at the same time, the peer multi-link device can clearly know that it is in a different chain according to the received link grouping information.
- the link of the channel group can support sending and receiving data at the same time, and the opposite multi-link device can use the link that is in a different link group from the link that is receiving the data to send data to the multi-link device, which reduces the determination and operation of the multi-link device.
- the data-receiving link can support the cumbersomeness of the process of the simultaneous data-receiving link, improve processing efficiency, and reduce the processing burden of the peer multi-link device.
- the peer multi-link device After the peer multi-link device receives the link grouping information, it can determine whether it supports simultaneous transmission and reception between any two links in the multiple link groups according to the grouping situation of the multiple links by the multi-link device Data, obtain capability information, and send the capability information to the multi-link device.
- the distance threshold is greater than or equal to the minimum distance of the frequency band where two links that can support simultaneous data transmission and reception are located.
- said link comprises a group G 1 has a link L1
- the multi-link press device may remove the link L2 links the order named from the link set A, it is determined whether L1 and L2 between the support send and receive data simultaneously, if not supported, L2 into the G 1, and removed from the link L2 set A; otherwise, skip L2, L3 removed from the link set A, it is determined whether to support between L3 and L1 send and receive data simultaneously, if not supported, G into the L3 1, L3 and A is deleted from the link set, otherwise, skip L3, L4 taken from the set of links, it is determined whether to support simultaneous between L1 and L4 send and receive data, if supported, will be placed in G 1 L4, and L4 A, remove from the link set.
- G 1 comprises L1 and L2
- the multi-link device may remove the link from the order named link link set A L3, respectively determine whether L3 and L1 and between L3 and L2 support simultaneous sending and receiving of data. If L3 and L1 do not support simultaneous sending and receiving of data, or L3 and L2 do not support simultaneous sending and receiving of data, put L3 into G 1 and delete L3 from link set A; otherwise, if both L3 and L1 and between L3 and L2 support simultaneous data transmission and reception, skip L3, take out L4 from link set A, and judge L4 and support simultaneously send and receive data between L2 and L4 and between L1, L4 into determining whether the determination result in G 1.
- Step 504 After the multi-link device determines the links included in the link group according to step 503, if the current link set is not an empty set, repeat steps 502 and 503 to determine at least one other link group until the link set Is an empty set.
- the current link set also includes L4.
- the multi-link The road device generates a second link group, puts L4 into the second link group, and deletes L4 from the current link set.
- the current link set is an empty set, and the multi-link device completes the grouping.
- the link grouping information further includes a total link number field, where the total number of links is used to indicate the number of link information fields in the link grouping information.
- the link grouping information includes the number of link groups, the number of links included in each link group, and multiple link information fields.
- the number of link groups is used to indicate the link grouping.
- the number of link groups included in the information, the number of links contained in each link group is used to indicate the number of links contained in each link group in the link grouping information, and each link information field includes operation level and Channel number, operation level and channel number are used to identify a link.
- the communication environment between the multi-link device and the opposite multi-link device may change.
- the communication environment between the multi-link device and the opposite multi-link device changes, it may cause A new link is added between the multi-link device and the opposite multi-link device or the original link is deleted.
- the link grouping information determined by the multi-link device according to the method shown in Figure 5 may change .
- FIG. 7 indicates that the field can be determined by the multilink device according to the foregoing method or as needed, and it is not limited.
- the opposite multi-link device may indicate one of the two main links among the multiple main links.
- the ability to send and receive data at the same time is sent to the multi-link device without sending the ability to send and receive data between any two links in the multiple links to the multi-link device, so as to reduce the number of peers.
- the power consumption of a multi-link device by judging whether any two of the multiple links support simultaneous sending and receiving of data.
- the multi-link device is on at least one link in the same link group and sends data to or receives data from the opposite-end multi-link device includes: the multi-link device is in the same chain Some links in the link group send data to the opposite multi-link device or receive data from the opposite multi-link device, or the multi-link device sends data to the opposite end on all the links in the same link group.
- the link device sends data or receives data from the peer multi-link device.
- FIG. 9 is a multi-link communication method provided by an embodiment of the application. As shown in FIG. 9, the multi-link communication method may specifically include:
- the multi-link device When the multi-link device uses the link to communicate, it realizes the communication by transmitting data on the channel corresponding to the link.
- Multi-link devices usually need to use a channel competition mechanism to compete for channels on the main link. After the channel is successfully competed, data is sent on the main link through the successfully competed channel.
- the channel contention mechanism can be referred to the prior art, and will not be described in detail.
- STA11 of multi-link site device 1 and STA12 of multi-link site device 2 both need to communicate with the multi-link access point through the channel corresponding to link L1
- the AP1 of the device communicates, so the multi-link site device 1 and the multi-link site device 2 need to compete for the channel, and the multi-link site device that successfully competes for the channel sends data to the multi-link access point device through the channel that successfully competes.
- the multi-link device For links in the same link group, when a multi-link device transmits data through a successfully competing channel on the main link, in order to avoid the failure of normal reception due to the interference of the transmitted signal between the links that do not support simultaneous data transmission and reception When data occurs, the multi-link device also sends data on the secondary link through the channel corresponding to the secondary link; or, if the multi-link device also needs to send data on the secondary link, it can also send data on the secondary link at the same time. Data transmission on the link.
- Step 902 The multi-link device judges the channel state of the channel corresponding to each secondary link; if the channel state is an idle state, execute step 903; if the channel state is not an idle state, execute step 904.
- the channel corresponding to the secondary link may be occupied by other multi-link devices, so the multi-link device cannot use the secondary link for data transmission, because , The multi-link device can judge the channel status of the channel corresponding to each secondary link.
- the multi-link device can monitor the signal energy on the secondary link. If the network allocation vector NAV of the channel corresponding to the secondary link is equal to 0, and the signal energy on the secondary link is less than the first predetermined Set the threshold to determine the channel state as the idle state.
- the multi-link device may also monitor the signal energy on the secondary link, and if the signal energy on the secondary link is less than the first preset threshold, it is determined that the channel state is the idle state.
- the time period during which the multi-link device performs signal energy monitoring on the secondary link may be a predefined time period before the multi-link device performs data transmission on the primary link.
- the predefined time period may be the point coordination function inter-frame space (PIFS).
- Step 903 Send data to the opposite multi-link device through the channel corresponding to the secondary link on the secondary link.
- Step 904 When the channel state changes from the non-idle state to the idle state, and data is being sent on the primary link, send data to the opposite multilink device through the channel corresponding to the secondary link on the secondary link.
- the data sent on the channel corresponding to the primary link can be carried in the first presentation protocol data unit (PPDU), and the data sent on the channel corresponding to the secondary link can be carried on the second PPDU, that is, the second PPDU.
- the end time of one PPDU is the same as the end time of the second PPDU or the time difference between the end times of the two is less than the preset threshold.
- the multi-link device and opposite end multi-link device can be completed independently on link group G1 and link group G2 Communication.
- the multi-link device supports sending and receiving data at the same time on some two links, and the opposite multi-link device does not support sending and receiving data at the same time on these two links, when the opposite multi-link device passes through these two links
- the channel corresponding to one of the two links sends data to the multi-link device, due to the interference of the signal sent on the link, the opposite multi-link device may be on the channel corresponding to the other of the two links.
- the communication system includes a multi-link access point device, a multi-link site device 1 and a multi-link site device 2, and the multi-link access point device includes AP1 and AP2, multi-link site device 1 includes STA11 and STA21, multi-link site device 2 includes STA12 and STA22, assuming that the multi-link access point device supports simultaneous data transmission and reception between links L1 and L2, and the multi-link site Device 1 does not support simultaneous sending and receiving of data between links L1 and L2; when STA11 sends data to AP1 through the channel corresponding to link L1, because multi-link site device 1 does not support simultaneous sending and receiving of data between L1 and L2, STA21 cannot receive any data frame through the channel corresponding to L2.
- the multi-link device determines that the channel state of the channel corresponding to the first link is a non-idle state, and generates indication information.
- Step 1102 The multi-link device sends instruction information to the opposite multi-link device.
- the multi-link site device 1 may send a request message to the multi-link access point device through the link L1, where the request message is used to request the channel status of the channel corresponding to the link L2, and the multi-link connection
- the AP2 in the in-point device determines the channel status of the channel corresponding to the link L2, it generates indication information, and sends the indication information to the multi-link site device 1 through the link L1.
- FIG. 12 shows a communication device, and the communication device 120 may be a multi-link device or a chip or a system on a chip in a multi-link device.
- the communication device 120 may be used to perform the function of the multi-link device involved in the above-mentioned embodiment.
- the communication device 120 shown in FIG. 12 includes a processing module 1201 and a sending module 1202.
- the communication device 130 can also be implemented using the following: one or more FPGAs (field programmable gate arrays), PLDs (programmable logic devices), controllers, state machines, gate logic, discrete hardware components, any other suitable circuits Or any combination of circuits capable of performing the various functions described throughout this application.
- FPGAs field programmable gate arrays
- PLDs programmable logic devices
- controllers state machines, gate logic, discrete hardware components, any other suitable circuits Or any combination of circuits capable of performing the various functions described throughout this application.
- the receiving module 1401 in FIG. 14 may be implemented by an input circuit.
- the communication device 140 may also include a storage medium.
- the communication device 140 can also be implemented using the following: one or more FPGAs (field programmable gate arrays), PLDs (programmable logic devices), controllers, state machines, gate logic, discrete hardware components, any other suitable circuits Or any combination of circuits capable of performing the various functions described throughout this application.
- FPGAs field programmable gate arrays
- PLDs programmable logic devices
- controllers state machines, gate logic, discrete hardware components, any other suitable circuits Or any combination of circuits capable of performing the various functions described throughout this application.
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Claims (23)
- 一种多链路通信方法,其特征在于,包括:多链路设备生成链路分组信息,其中,链路分组满足以下特点:属于不同链路组的链路支持同时收发数据;所述多链路设备发送所述链路分组信息。
- 根据权利要求1所述的方法,其特征在于,所述链路分组还满足以下特点:同一个链路组内,至少存在两条不支持同时收发数据的链路。
- 根据权利要求1或2所述的方法,其特征在于,同一个链路组内,对于其中的任意一条链路,至少存在一条与所述任意一条链路不支持同时收发数据的链路。
- 根据权利要求1-3任一项所述的方法,其特征在于,所述链路分组信息包括每条链路的链路信息;所述每条链路的链路信息包括所述链路的操作等级、所述链路的信道号和所述链路所在链路组的链路组标识;或者所述每条链路的链路信息包括所述链路的操作等级、所述链路的信道号和所述链路的链路主次标识;或者所述每条链路的链路信息包括所述链路的操作等级、所述链路的信道号。
- 根据权利要求1-4任一项所述的方法,其特征在于,同一链路组中包括主链路以及次链路;多链路设备向所述对端多链路设备发送数据,包括:所述多链路设备在所述主链路上竞争信道,并在竞争信道成功后,在所述主链路上通过竞争成功的信道向所述对端多链路设备发送数据;当满足以下至少一个条件时,所述多链路设备在所述次链路上通过所述次链路对应的信道向所述对端多链路设备发送数据;其中,所述至少一个条件包括:所述次链路对应的信道的信道状态为空闲态;或者所述次链路对应的信道的信道状态从非空闲态变为空闲态,且所述主链路上正进行数据发送。
- 根据权利要求5所述的方法,其特征在于,所述次链路对应的信道的信道状态为空闲态,包括:当所述次链路上的信号能量小于第一预设阈值时,所述信道状态为空闲态;或者当所述次链路对应的信道的网络分配矢量NAV等于0,并且所述次链路上的信号能量小于第一预设阈值时,所述信道状态为空闲态。
- 根据权利要求5或6所述的方法,其特征在于,所述主链路上发送的数据携带在第一物理层协议数据单元PPDU,所述次链路上发送的数据携带在第二PPDU;所述第一PPDU的结束时间与所述第二PPDU的结束时间的时间差小于第二预设阈值。
- 根据权利要求5-7任一项所述的方法,其特征在于,所述方法还包括:所述多链路设备接收来自所述对端链路设备的能力信息;其中,所述能力信息用于指示多条主链路中的任意两条主链路之间是否支持同时收发数据。
- 根据权利要求1-8任一项所述的方法,其特征在于,所述多链路设备为多链路接入点设备,对端多链路设备为多链路站点设备;或者所述多链路设备为多链路站点设备,对端多链路设备为多链路接入点设备;或者所述多链路设备为多链路站点设备,对端多链路设备为多链路站点设备。
- 一种多链路通信方法,其特征在于,包括:当满足以下至少一个条件时,多链路设备生成指示信息;所述指示信息用于指示所述第一链路对应的信道的信道状态为非空闲态;所述多链路设备向对端多链路设备发送所述指示信息;其中,所述至少一个条件包括:所述第一链路上的信号能量大于第一预设阈值;或者所述第一链路对应的信道对应的网络分配矢量NAV不等于0;或者所述多链路设备通过所述第一链路对应的信道接收到数据帧。
- 根据权利要求10所述的方法,其特征在于,所述多链路设备向对端多链路设备发送所述指示信息,包括:所述多链路设备通过第二链路对应的信道,向所述对端多链路设备发送所述指示信息。
- 根据权利要求11所述的方法,其特征在于,所述多链路设备通过第二链路对应的信道,向对端多链路设备发送所述指示信息,包括:所述多链路设备通过第二链路对应的信道,向所述对端多链路设备发送确认帧;其中,所述确认帧包括所述指示信息;所述确认帧用于指示所述多链路设备是否正确接收到所述对端多链路设备通过所述第二链路对应的信道发送的数据。
- 根据权利要求11或12所述的方法,其特征在于,所述第一链路与所述第二链路在所述多链路设备上支持同时收发数据;所述第一链路与所述第二链路在所述对端多链路设备上不支持同时收发数据。
- 一种多链路通信方法,其特征在于,包括:对端多链路设备接收来自所述多链路设备的指示信息,其中,所述指示信息用于指示第一链路对应的信道的信道状态为非空闲态。
- 根据权利要求14所述的方法,其特征在于,所述对端多链路设备通过第二链路对应的信道接收所述指示信息。
- 根据权利要求15所述的方法,其特征在于,所述对端多链路设备通过第二链路对应的信道接收所述指示信息,包括:所述对端多链路设备接收来自所述多链路设备的确认帧,所述确认帧包括所述指示信息;所述确认帧用于指示所述多链路设备是否正确接收到所述对端多链路设备通过所述第二链路对应的信道发送的数据。
- 根据权利要求15或16所述的方法,其特征在于,所述第一链路与所述第二链路在所述多链路设备上支持同时收发数据;所述第一链路与所述第二链路在所述对端多链路设备上不支持同时收发数据。
- 一种通信装置,其特征在于,通信装置包括至少一个处理器和至少一个存储器;至少一个存储器与至少一个处理器耦合,至少一个存储器用于存储计算机程序代码或计算机指令;当至少一个处理器执行计算机指令时,使得通信装置执行如权利要求1-9任一项所述的多链路通信方法或者如权利要求10-13任一项所述的多链路通信方法或者如权利要求14-17任一项所述的多链路通信方法。
- 一种芯片,其特征在于,所述芯片包括处理器和通信接口,所述通信接口和所述处理器耦合,所述处理器用于运行计算机程序或指令,以实现如权利要求1-9任一项所述的多链路通信方法或者如权利要求10-13任一项所述的多链路通信方法或者如权利要求14-17任一项所述的多链路通信方法。
- 一种计算机可读存储介质,其特征在于,计算机可读存储介质存储有计算机指令或程序,当计算机指令或程序在计算机上运行时,使得计算机执行如权利要求1-9任一项所述的多链路通信方法或者如权利要求10-13任一项所述的多链路通信方法或者如权利要求14-17任一项所述的多链路通信方法。
- 一种计算机程序产品,其特征在于,所述计算机程序产品包括指令,当所述指令在计算机上运行时,使得计算机执行如权利要求1-9任一项所述的多链路通信方法或者如权利要求10-13任一项所述的多链路通信方法或者如权利要求14-17任一项所述的多链路通信方法。
- 一种通信系统,其特征在于,通信系统包括多链路设备和对端多链路设备;所述多链路设备,用于生成链路分组信息,其中,链路分组满足以下特点:属于不同链路组的链路支持同时收发;发送所述链路分组信息;所述对端多链路设备,用于接收来自所述多链路设备的链路分组信息。
- 一种通信系统,其特征在于,通信系统包括多链路设备和对端多链路设备;所述多链路设备,用于当满足以下至少一个条件时,多链路设备生成指示信息;所述指示信息用于指示所述第一链路对应的信道的信道状态为非空闲态;所述多链路设备向对端多链路设备发送所述指示信息;其中,所述至少一个条件包括:所述第一链路上的信号能量大于第一预设阈值;或者所述第一链路对应的信道对应的网络分配矢量NAV不等于0;或者所述多链路设备通过所述第一链路对应的信道接收到数据帧;所述多链路设备,用于接收来自所述多链路设备的指示信息,其中,所述指示信息用于指示第一链路对应的信道的信道状态为非空闲态。
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