WO2017054492A1

WO2017054492A1 - End-to-end communication link establishment method, access point and station

Info

Publication number: WO2017054492A1
Application number: PCT/CN2016/084577
Authority: WO
Inventors: 朱俊; 苏宏家; 马驰翔
Original assignee: 华为技术有限公司
Priority date: 2015-09-29
Filing date: 2016-06-02
Publication date: 2017-04-06
Also published as: CN111836404B; CN111836404A; CN106559903A; CN106559903B

Abstract

Provided is an end-to-end communication link establishment method, which is used for improving the end-to-end communication link establishment efficiency and reducing the probability of the occurrence of a competition conflict between stations. The method comprises: an access point receiving a request frame sent by at least one first station, wherein the request frame instructs the first station to request establishment of an end-to-end communication link with at least one second station; the access point generating a trigger frame, wherein the trigger frame instructs each station of the at least one first station to request the establishment of the end-to-end communication link with the at least one second station and is used for each station of the at least one second station to send a response resource of a response frame; the access point sending the trigger frame to the at least one second station; the access point receiving a response frame sent by the at least one second station on a respective response resource; and the access point sending an acknowledgement frame to the at least one first station and the at least one second station, wherein the acknowledgement frame comprises first acknowledgement information used for indicating successful establishment of the end-to-end communication link between the first station and the at least one second station.

Description

End-to-end communication link establishment method, access point and site

This application claims the priority of the Chinese Patent Application filed on September 29, 2015, the Chinese Patent Office, Application No. 201510633887.2, and the invention titled "End-to-End Communication Link Establishment Method, Access Point, and Site". This is incorporated herein by reference.

Technical field

The present invention relates to the field of wireless communications, and in particular, to an end-to-end communication link establishing method, an access point, a first station, and a second station.

Background technique

The Device-to-Deceive (D2D) communication technology is a technology that allows direct communication between terminals. It can increase the spectrum efficiency of the communication system, reduce the transmission power of the terminal, and improve the capacity of the air interface. To some extent, Solving the problem of lack of spectrum resources in wireless communication systems can significantly improve the performance of the entire network system.

End-to-end communication technology can solve the problem of lack of spectrum resources in wireless communication systems because the signal transmission in end-to-end communication is realized through a direct wireless link, and the traditional communication network needs to pass. The two links use the access point (AP) as a relay to implement signal transmission. End-to-end communication involves three steps, the first is the discovery process of the end-to-end terminal, the second is the establishment process of the end-to-end communication link, and the third is the end-to-end communication process.

Currently, the Direct-Link Setup (DLS) protocol and the Tunneled Direct-Link Setup (TDLS) protocol define the end-to-end communication link establishment process. Since the link establishment request frame and the link setup response frame in the DLS protocol or the TDLS protocol are both unicast frames, the first site that initiates the end-to-end communication link establishment request initiates a request at most with only one site establishment end. The end communication link, and the access point can only process one end-to-end communication link establishment request initiated by the first station at the same time, so the establishment efficiency of the end-to-end communication link is low. In the DLS protocol or the TDLS protocol, the end-to-end communication link is established according to the traditional carrier detection multiple access. The Carrier Sense Multiple Access (CSMA) mechanism sends a message to a site that responds to a response message to a first site in a competitive manner with other sites, resulting in a contention conflict between multiple sites.

Especially in a site-intensive scenario, when the first site needs to establish an end-to-end communication link with multiple sites, the first site needs to initiate an end-to-end communication link establishment request for each site, and the access point is the same. Only one end-to-end communication link setup request initiated by the first station can be processed at a time, so that the problem of low efficiency of end-to-end communication link establishment is more obvious. Due to site intensiveness, multiple sites use a competitive manner to send messages, which increases the probability of contention conflicts between multiple sites.

Summary of the invention

Embodiments of the present invention provide an end-to-end communication link establishment method, an access point, a first station, and a second station, so as to improve end-to-end communication link establishment efficiency and reduce end-to-end communication link establishment process. The probability of a contention conflict between sites.

In a first aspect, a method for establishing an end-to-end communication link according to an embodiment of the present invention includes:

Receiving, by the access point, a request frame respectively sent by the at least one first station, where the request frame is used to indicate that the first station requests to establish an end-to-end communication link with the at least one second station, the at least one first station and the Each of the at least one second site has end-to-end communication capabilities;

The access point generates a trigger frame, the trigger frame is used to indicate that each of the at least one first station requests to establish an end-to-end communication link with the at least one second station, and for the at least one second Each site in the site sends a response resource for the response frame;

Sending, by the access point, the trigger frame to the at least one second station;

Receiving, by the access point, a response frame sent by the at least one second station on a respective response resource, the response frame including first response information indicating that the second station agrees to establish an end-to-end communication link with the first station ;

An access point sends an acknowledgement frame to the at least one first site and the at least one second site, the acknowledgement frame including a first indication that the first site and the at least one second site successfully establish an end-to-end communication link A confirmation message.

With reference to the first aspect, in a first possible implementation, the response frame further includes second response information for indicating that the second station does not agree to establish an end-to-end communication link with the first station;

Correspondingly, the confirmation frame further includes second confirmation information for indicating that the first station establishes an end-to-end communication link failure with the at least one second station.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the second confirmation information includes an identifier field, where the identifier field is used to indicate the first site and the at least one The second site failed to establish an end-to-end communication link.

In conjunction with the first aspect or the second possible implementation of the first aspect, in a third possible implementation manner of the first aspect, the trigger frame includes a first site identifier, a second site identifier, and a The second station sends a response resource of the response frame.

With reference to the first aspect, in a fourth possible implementation, the request frame or the trigger frame includes a first capability field, where the first capability field is used to indicate a communication capability of the first site;

The first response information or the first acknowledgement information includes a second capability field, where the second capability field is used to indicate a communication capability of the second site.

In conjunction with the first aspect, in a fifth possible implementation, the first acknowledgement information includes an identifier corresponding to the end-to-end communication link successfully established by the first site and each second site.

A second aspect of the present invention provides a method for establishing an end-to-end communication link, including:

The first station sends a request frame to the access point, where the request frame is used to indicate that the first station requests to establish an end-to-end communication link with the at least one second station, each of the first station and the at least one second station Each site has end-to-end communication capabilities;

The first station receives an acknowledgement frame sent by the access point, and the acknowledgement frame includes first acknowledgement information for indicating that the first station successfully establishes an end-to-end communication link with the at least one second site.

With reference to the second aspect, in a first possible implementation manner, the confirmation frame further includes second confirmation information for indicating that the first station establishes an end-to-end communication link failure with the at least one second station.

With reference to the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the second confirmation information includes an identifier field, where the identifier field is used to indicate the first site and the at least one The second site failed to establish an end-to-end communication link.

With reference to the second aspect, in a third possible implementation, the request frame includes a first capability field, where the first capability field is used to indicate a communication capability of the first site;

The first acknowledgement information includes a second capability field, and the second capability field is used to indicate a communication capability of the second site.

In conjunction with the second aspect, in a fourth possible implementation, the first acknowledgement information includes an identifier corresponding to the end-to-end communication link successfully established by the first site and each second site.

In a third aspect, a method for establishing an end-to-end communication link according to an embodiment of the present invention includes:

The second station receives a trigger frame sent by the access point, where the trigger frame is used to indicate that at least one first station requests to establish an end-to-end communication link with the second station, and a response resource for the second station to send the response frame, Each of the second site and the at least one first site has end-to-end communication capabilities;

The second station sends a response frame to the access point on the response resource, where the response frame includes first response information for indicating that the second station agrees to establish an end-to-end communication link with the at least one first station;

The second station receives an acknowledgement frame sent by the access point, where the acknowledgement frame includes first acknowledgement information for indicating that the second site successfully establishes an end-to-end communication link with the at least one first site.

With reference to the third aspect, in a first possible implementation manner, the confirmation frame further includes second confirmation information for indicating that the second station establishes an end-to-end communication link failure with the at least one first station.

With reference to the first possible implementation manner of the third aspect, in a second possible implementation manner of the third aspect, the second confirmation information includes an identifier field, where the identifier field is used to indicate the second site and the at least one The first site establishes an end-to-end communication link failure.

With reference to the third aspect, or the second possible implementation manner of the third aspect, in a third possible implementation manner of the third aspect, the trigger frame includes a first site identifier, a second site identifier, and a second The site sends a response resource for the response frame.

With reference to the third aspect, in a fourth possible implementation, the triggering frame includes a first capability field, where the first capability field is used to indicate a communication capability of the first site;

The first response information or the first confirmation information includes a second capability field, and the second energy The force field is used to indicate the communication capability of the second site.

In conjunction with the third aspect, in a fifth possible implementation, the first acknowledgement information includes an identifier corresponding to the end-to-end communication link successfully established by the second site with each of the first sites.

In a fourth aspect, an access point provided by the embodiment of the present invention includes:

a transceiver unit, configured to receive a request frame respectively sent by the at least one first station, where the request frame is used to indicate that the first station requests to establish an end-to-end communication link with the at least one second station, the at least one first station and Each of the at least one second site has end-to-end communication capabilities;

a processing unit, configured to generate a trigger frame according to the request frame received by the transceiver unit, where the trigger frame is used to indicate that each site request in the at least one first site establishes an end-to-end with at least one second site a communication link, and a response resource for each of the at least one second station to transmit a response frame;

The transceiver unit is further configured to send the trigger frame generated by the processing unit to the at least one second station, and receive a response frame sent by the at least one second station on a respective response resource, where the response The frame includes first response information for instructing the second station to agree to establish an end-to-end communication link with the first station; transmitting an acknowledgement frame to the at least one first station and the at least one second station, the acknowledgement frame A first acknowledgement information is included for indicating that the first station and the at least one second station successfully establish an end-to-end communication link.

With reference to the fourth aspect, in a first possible implementation, the response frame further includes second response information for indicating that the second station does not agree to establish an end-to-end communication link with the first station;

With reference to the first possible implementation manner of the fourth aspect, in a second possible implementation manner of the fourth aspect, the second confirmation information includes an identifier field, where the identifier field is used to indicate the first site and the at least one second The site failed to establish an end-to-end communication link.

With reference to the fourth aspect, or the second possible implementation manner of the fourth aspect, in a third possible implementation manner of the fourth aspect, the trigger frame includes a first site identifier, a second site identifier, and The response resource of the response frame is sent at each second site.

With reference to the fourth aspect, in a fourth possible implementation, the request frame or the trigger frame includes a first capability field, where the first capability field is used to indicate a communication capability of the first site;

With reference to the fourth aspect, in a fifth possible implementation manner, the first confirmation information includes an identifier corresponding to the end-to-end communication link successfully established by the first site and each second site.

In a fifth aspect, a first site provided by an embodiment of the present invention includes:

a processing unit, configured to determine a request frame, where the request frame is used to indicate that the first site requests to establish an end-to-end communication link with the at least one second site, each of the first site and the at least one second site Have end-to-end communication capabilities;

a transceiver unit, configured to send the request frame determined by the processing unit to an access point, and receive an acknowledgement frame sent by the access point, where the acknowledgement frame includes an indication that the first site and the at least one second site are successfully established. The first confirmation message of the end communication link.

With reference to the fifth aspect, in a first possible implementation, the confirmation frame further includes second confirmation information for indicating that the first station establishes an end-to-end communication link failure with the at least one second station.

With reference to the first possible implementation manner of the fifth aspect, in a second possible implementation manner of the fifth aspect, the second confirmation information includes an identifier field, where the identifier field is used to indicate the first site and the at least one The second site failed to establish an end-to-end communication link.

With reference to the fifth aspect, in a third possible implementation, the request frame includes a first capability field, where the first capability field is used to indicate a communication capability of the first site;

With reference to the fifth aspect, in a fourth possible implementation, the first confirmation information includes an identifier corresponding to the end-to-end communication link successfully established by the first site and each second site.

In a sixth aspect, a second site provided by the embodiment of the present invention includes:

a transceiver unit, configured to receive a trigger frame sent by the access point, where the trigger frame is used to indicate at least one The first site requests an end-to-end communication link with the second site, and a response resource for the second site to send the response frame, and each of the second site and the at least one first site has an end-to-end Communication capability;

a processing unit, configured to determine a response frame, where the response frame includes first response information for indicating that the second station agrees to establish an end-to-end communication link with the at least one first station;

The transceiver unit is further configured to send the response frame determined by the processing unit to the access point on the response resource, and receive an acknowledgement frame sent by the access point, where the acknowledgement frame includes the second site for indicating A first confirmation message that successfully establishes an end-to-end communication link with at least one first site.

In conjunction with the sixth aspect, in a first possible implementation manner, the confirmation frame further includes second confirmation information for indicating that the second station establishes an end-to-end communication link failure with the at least one first station.

With reference to the first possible implementation manner of the sixth aspect, in a second possible implementation manner of the sixth aspect, the second confirmation information includes an identifier field, where the identifier field is used to indicate the second site and the at least one The first site establishes an end-to-end communication link failure.

With reference to the sixth aspect, or the second possible implementation manner of the sixth aspect, in a third possible implementation manner of the sixth aspect, the trigger frame includes a first site identifier, a second site identifier, and a second The site sends a response resource for the response frame.

With reference to the sixth aspect, in a fourth possible implementation, the triggering frame includes a first capability field, where the first capability field is used to indicate a communication capability of the first site;

With reference to the sixth aspect, in a fifth possible implementation manner, the first confirmation information includes an identifier corresponding to the end-to-end communication link successfully established by the second station and each first station.

In the embodiment of the present invention, the end-to-end communication link establishment process initiated by the multiple first sites is uniformly coordinated and controlled by the access point, and for each first site, the first site may request one or more second sites. Establishing an end-to-end communication link, the access point allocates, for each second station, a response resource for replying to the response frame, the response frame is used to indicate whether the second station agrees to establish an end-to-end communication link with the first station, Therefore, the second site can send a response frame on the allocated response resource, avoiding the second site. When the response frame is sent, the resources are competed with other sites, thereby reducing the probability of contention conflicts between sites during the establishment of the end-to-end communication link, and reducing the cost of competing resources between the sites. After the first station initiates the end-to-end communication link establishment process, the first station may determine to establish an end-to-end communication link with the multiple second sites respectively according to the response frames sent by the multiple second stations received by the access point. And the access point can simultaneously process end-to-end communication link requests initiated by multiple first sites, thereby improving end-to-end communication link establishment efficiency. The embodiment of the invention provides a method for establishing an end-to-end communication link, which can be integrated with end-to-end communication site discovery and end-to-end data transmission, so as to improve overall network efficiency.

DRAWINGS

FIG. 1(a) is a schematic diagram of a network architecture according to an embodiment of the present invention;

FIG. 1(b) is a schematic flowchart of a method for establishing an end-to-end communication link according to an embodiment of the present invention;

2 is a schematic structural diagram of a frame of a trigger frame according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a request information field according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of a request information field according to an embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of a frame of a trigger frame according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of a request information field according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of a request information field according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram of a request information field according to an embodiment of the present disclosure;

FIG. 9 is a schematic diagram of an access end transmitting a beacon frame according to an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a frame of a response frame according to an embodiment of the present disclosure;

FIG. 11 is a schematic structural diagram of a frame of an acknowledgement frame according to an embodiment of the present disclosure;

FIG. 12 is a schematic structural diagram of a frame of an acknowledgement frame according to an embodiment of the present disclosure;

FIG. 13 is a schematic structural diagram of a frame of an acknowledgement frame according to an embodiment of the present disclosure;

FIG. 14 is a schematic flowchart of a method for establishing an end-to-end communication link according to an embodiment of the present invention;

FIG. 15 is a schematic flowchart of a method for establishing an end-to-end communication link according to an embodiment of the present invention;

FIG. 16 is a schematic diagram of an interaction process between devices according to an end-to-end communication link establishment method according to an embodiment of the present disclosure;

FIG. 17 is a schematic diagram of an interaction process between devices according to an end-to-end communication link establishment method according to an embodiment of the present disclosure;

FIG. 18 is a schematic structural diagram of a frame of a request frame according to an embodiment of the present disclosure;

FIG. 19 is a schematic structural diagram of a frame of a response frame according to an embodiment of the present disclosure;

FIG. 20 is a schematic diagram of an interaction process between devices according to an end-to-end communication link establishment method according to an embodiment of the present disclosure;

FIG. 21 is a schematic structural diagram of an access point according to an embodiment of the present disclosure;

FIG. 22 is a schematic structural diagram of a first station according to an embodiment of the present disclosure;

FIG. 23 is a schematic structural diagram of a second station according to an embodiment of the present disclosure;

FIG. 24 is a schematic structural diagram of an access point according to an embodiment of the present disclosure;

FIG. 25 is a schematic structural diagram of a first station according to an embodiment of the present disclosure;

FIG. 26 is a schematic structural diagram of a second station according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Embodiments of the present invention provide a method and device for establishing an end-to-end communication link (the device includes an access point, a first station, and a second station) to improve end-to-end communication link establishment efficiency and reduce an end-to-end communication chain. The probability of a conflict of competition between sites during road establishment. The method and the device are based on the same inventive concept. Since the principles of the method and the device for solving the problem are similar, the implementation of the device and the method can be referred to each other, and the repeated description is not repeated.

The technical solution of the present invention relates to an end-to-end communication technology, and the end-to-end communication technology is a technology for allowing direct communication between terminals (referred to as a site in the present invention), which can increase the frequency of the communication system. The spectral efficiency reduces the transmission power of the terminal, and solves the problem of lack of spectrum resources of the wireless communication system to a certain extent. The embodiment of the invention provides a method for establishing an end-to-end communication link, which is suitable for a wireless local area network (WLAN), and is particularly suitable for a site-intensive scenario, and can satisfy the next generation wireless fidelity (Wi-Fidelity, Wi -Fi) Standards for high-density users and high throughput requirements, as well as scheduling features based on next-generation Wi-Fi standards.

In the embodiment of the present invention, a site that initiates an end-to-end communication link establishment process is referred to as a first site, and a site that responds to an end-to-end communication link establishment process of the first site is referred to as a second site, a first site, and The second site can be one or more, and both the first site and the second site have end-to-end communication capabilities. As shown in FIG. 1(a), the first site group includes a plurality of first sites, and the second site group includes a plurality of second sites, and the access point may be associated with any one of the first site groups, and Any one of the second sites in the second site group communicates. The access point may receive an end-to-end communication link setup request initiated by at least one first site in the first site group, and each first site may request to establish end-to-end communication with at least one second site in the second site group. link. The access point allocates a response resource for replying the response frame to each second station, and sends a trigger frame to the second station according to the request of each first station, so the second station sends a response frame on the respective response resources. The second station is prevented from competing with other sites when sending the response frame, thereby reducing the probability of contention conflict between the sites in the process of establishing the end-to-end communication link, and reducing the overhead caused by the competition resources between the sites. The technical solution provided by the embodiment can avoid the situation that the regular communication in the basic service unit (BSS) is affected due to the long-term competition status of the site, thereby improving the performance of the entire network. The access point returns an acknowledgement frame to the first station and the second station according to the response frame replied by the second station, and the first station may determine to establish an end-to-end communication link with the plurality of second sites respectively according to the acknowledgement frame, and access The point simultaneously processes the end-to-end communication link establishment request initiated by multiple first sites, thereby improving the efficiency of establishing the end-to-end communication link. The embodiment of the invention provides a method for establishing an end-to-end communication link, which can be integrated with end-to-end communication site discovery and end-to-end data transmission, so as to improve overall network efficiency.

Embodiment 1

As shown in FIG. 1(b), on the access point side, an embodiment of the present invention provides an end-to-end communication chain. Ways to establish roads, including:

S101. The access point receives, by the at least one first station, a request frame, where the request frame is used to indicate that the first station requests to establish an end-to-end communication link with the at least one second station, the at least one first station, and the at least one second. Each site in the site has end-to-end communication capabilities;

S102. The access point generates a trigger frame, where the trigger frame is used to indicate that each site in the at least one first site requests to establish an end-to-end communication link with the at least one second site, and for each of the at least one second site. Sites send response resources for response frames;

S103. The access point sends a trigger frame to the at least one second station.

S104. The access point receives a response frame sent by the at least one second station on the respective response resource, where the response frame includes first response information used to indicate that the second station agrees to establish an end-to-end communication link with the first station.

S105. The access point sends an acknowledgement frame to the at least one first site and the at least one second site, where the acknowledgement frame includes first acknowledgement information for indicating that the first site and the at least one second site successfully establish an end-to-end communication link.

In this embodiment, the first station that sends the request frame to the access point may be one or more. For each first station, the second station that requests the first station to establish the end-to-end communication link may be one or Multiple, and thus the first site can establish an end-to-end communication link with multiple second sites at the same time, thereby improving end-to-end communication link establishment efficiency.

Optionally, the access point receives the request frame sent by the first station in a random access process. That is, the access point sends a random access triggering frame (Trigger Frame for Random Access) to trigger a random access procedure. During the random competition of the random access procedure, one or more requirements for establishing an end-to-end communication link are required. A station separately sends a request frame to the access point, the request frame being used by the first station to establish an end-to-end communication link with the at least one second station.

Optionally, the request frame sent by the first station received by the access point includes a first capability field, where the first capability field is used to indicate the communication capability of the first site. The first capability field may be a to-be-talked (TBD) field in the request frame, where the first capability field is used to describe information such as a communication capability, a service quality, or an association identifier of the first site. It should be noted that the TBD field is not determined. The number of bits in the field and the location of the field, the above description applies to the TBD field referred to below.

In this embodiment, the access point notifies one or more second stations by sending a trigger frame: requesting a first station to establish an end-to-end communication link with the second station, and transmitting a response frame for each second station Response resources. The trigger frame includes a first site identifier, a second site identifier, and a response resource for each second station to send a response frame.

Optionally, the trigger frame includes a resource indication field and a request information field. When the first site identifier, the second site identifier, and the response resource are indicated by the resource indication field and the request information field, the following forms may be adopted:

The resource indication field may be located in a signaling field of a preamble of the trigger frame, such as an Efficient Signaling B (HE-SIG-B) field, or may be located in a payload portion of the preamble of the trigger frame. The trigger frame may include multiple request information fields, and the request information field is in one-to-one correspondence with the second site, and each request information field includes a second site identifier and an identifier of the first site requesting to establish a link with the second site. The first site refers to a site that initiates an end-to-end communication link, which may also be referred to simply as an originating site.

For example, the trigger frame adopts the frame structure shown in FIG. 2, and the trigger frame includes a resource indication field and a request information field, and the trigger frame includes a request information field corresponding to STA6 (second site) and STA2 (second site) respectively. For STA2, STA1 (first station) requests to establish an end-to-end communication link with STA2, so the request information field corresponding to STA2 includes the identifier of the link requesting station STA1 and the identifier of the link response station STA2. The resource indication field includes the response resources of STA6 and STA2 in sequence. The TBD field may include a capability field, a Quality of Service (QOS) field, an Association Identifier (AID) field, and the like, and is used to describe information such as the communication capability, the service quality, or the association identifier of the STA1.

For example, if the request frame received by the access point indicates that multiple first site requests establish an end-to-end link with the same second site, it may be equivalent to multiple pairs of end-to-end communication links. set up. For example, STA7 (first site) and STA8 (first site) both request to establish an end-to-end communication link with STA2 (second site), and the request information field corresponding to STA2 can adopt the structure shown in FIG. The request information field includes two link request sites and two link response sites, and the link response sites are all STA2, and the TBD1 field and the TBD2 field are used to indicate STA7 communication, respectively. Ability and STA8 communication capabilities.

For example, if the request frame received by the access point indicates that a first station requests to establish an end-to-end link with multiple second stations, it may be equivalent to the establishment of multiple pairs of end-to-end communication links. . For example, STA3 (first station) requests to establish an end-to-end communication link with STA4 (second site) and STA9 (second site), respectively, and the request information fields corresponding to STA4 and STA9 respectively can adopt the structure shown in FIG.

2. The resource indication field may be located in a signaling field of a preamble of the trigger frame, such as an Efficient Signaling B (HE-SIG-B) field, or may be located in a payload portion of the preamble of the trigger frame. The resource indication field includes a response resource corresponding to each of the second site identifier and each of the second site identifiers. The trigger frame may include multiple request information fields, and the request information field is in one-to-one correspondence with the second site. The order of the request information fields corresponding to the second site in the trigger frame is the same as the order of the second site identifier in the resource indication field, and the second The request information field corresponding to the site includes the identifier of the first site corresponding to the second site and the number of the first site corresponding to the second site. In this case, the identifier of the second site corresponding to the field may be omitted in the request information field. The first site refers to a site that initiates an end-to-end communication link, and may also be referred to as an initiator site; the second site refers to a site that responds to an end-to-end communication link, and may also be referred to as a response site.

For example, the trigger frame adopts the frame structure shown in FIG. 5, and the trigger frame includes a resource indication field and a request information field, and the resource indication field includes STA6 (second site) identifier and STA6 response resource in sequence, and STA2 (second The site identifier is associated with the response resource of STA2, and the request information field corresponding to STA6 and STA2 is respectively included in the trigger frame. For the request information field of STA2, the field includes the identifier of the first station corresponding to STA2 and the number of the first station corresponding to STA2.

For example, the request frame received by the access point indicates that a first station request establishes an end-to-end link with a second station, for example, STA7 (first station) requests to establish end-to-end communication with STA2 (second station). For the link, the request information field corresponding to STA2 may adopt the structure shown in FIG. 6. The request information field corresponding to STA2 includes the identifier of the first station STA7 corresponding to STA2 and the number of the first station corresponding to STA2 is 1.

For example, the request frame received by the access point indicates that multiple first site requests establish an end-to-end link with the same second site, for example, STA7 (first site) and STA8 (first site) both request and STA2 The second station establishes an end-to-end communication link, and the request information field corresponding to STA2 can adopt the structure shown in FIG. 7. The request information field corresponding to STA2 includes: the identifier of the first station STA7 corresponding to STA2 and the identifier of STA8. , and the number of first sites corresponding to STA2 is 2. Optionally, for the same second site, the multiple first sites corresponding to the second site are arranged according to the MAC address size. Optionally, the field used to indicate the number of the first site corresponding to the second site is a length field. For example, if the MAC address length of the site is 6 bytes, the length field may be configured as 12 bytes, or the length field. It can be configured as 12+2x bytes, and x bytes are the byte length of the TBD field.

For example, if the request frame received by the access point indicates that a first station requests to establish an end-to-end link with multiple second sites respectively, it may be equivalent to a plurality of pairs of end-to-end communication links. set up. For example, STA3 (first station) requests to establish an end-to-end communication link with STA4 (second site) and STA9 (second site) respectively, and the request information fields corresponding to STA4 and STA9 respectively can adopt the structure shown in FIG.

Optionally, a scenario in which a first site requests an end-to-end communication link with a second site, or a first site requests an end-to-end communication link with multiple second sites, corresponding to the second site The number of the first sites is 1, so the field indicating the number of first sites corresponding to the second site may be omitted in the request information field of the second site.

It should be noted that the frame structure of the trigger frame may adopt one or a combination of the above forms, and the frame structure of the trigger frame is not limited to the above form provided in this embodiment.

In this embodiment, optionally, the access point indicates the time at which the access point sends the trigger frame by broadcasting a management frame or a control frame, such as a beacon frame (Beacon frame), and all stations having end-to-end communication capabilities are A management frame or control frame capable of receiving an access point broadcast. In this way, the second station can determine the time at which the access point sends the trigger frame according to the management frame or the control frame broadcast by the access point, and the second station keeps the sleep state before the time when the access point sends the trigger frame, and is at the access point. The time at which the trigger frame is sent remains awake to receive the trigger frame. That is, the second site can adopt the energy saving mode when there is no service demand before the time when the access point sends the trigger frame, so as to save the energy consumption of the second site.

For example, the access point broadcasts the Beacon frame as an example. The access point periodically broadcasts the Beacon frame. Generally, the period of the broadcast Beacon frame is 1 millisecond. As shown in FIG. 9, the second station receives the first Beacon frame broadcast by the access point, and according to the indication of the first Beacon frame, the access point does not send the trigger frame before the arrival of the second Beacon frame, so The second station can remain dormant until the second Beacon frame arrives. The second station receives the second Beacon frame broadcast by the access point, and according to the indication of the second Beacon frame, the access point sends the trigger frame at the time T1 after the second Beacon frame, so the second station is at time T1. Before staying in sleep state, wake up at time T1 to receive the trigger frame sent by the access point.

In this embodiment, the access point receives the response frame sent by the at least one second station on the respective response resources, and the second station may use the Orthogonal Frequency Division Multiple Access (OFDMA) mode to access the access frame. The point sends a response frame, which can include the following two types of response information:

The first type is used to indicate that the second station agrees to establish the first response information of the end-to-end communication link with the first station, and the first response information may simultaneously indicate that the second station agrees to establish an end-to-end with the at least one first station respectively. Communication link. And for the second station that replies to the first response information, the access point sends the first confirmation information to the second station and the one or more first stations that the second station agrees to establish a link, where the first confirmation information is used to indicate The first site and the second site successfully establish an end-to-end communication link. Optionally, the first confirmation information includes an identifier corresponding to the end-to-end communication link successfully established by the first site and each second site.

The other is for indicating that the second station does not agree to establish second end information of the end-to-end communication link with the first station, and for the second station that responds to the second response information, the access point to the second station and the The second station does not agree to send the second acknowledgement information to the one or more first stations that establish the link, the second acknowledgement information is used to indicate that the first station establishes an end-to-end communication link failure with the second station.

The response frame (the response frame includes the first response information and/or the second response information) may include a first site identifier and a status code field, where the response frame may further include a second site identifier, the status code The field is used to indicate whether the second site agrees to establish an end-to-end communication link with the first site. For example, the response frame adopts a frame structure as shown in FIG. 10, and FIG. 10 includes STA2. Response frame of (second site) and response frame of STA6 (second site). When the first station that requests the end-to-end communication link with STA2 is STA1, the response frame of STA2 includes the identifier of STA1 and the status code field corresponding to STA1; the first station that requests to establish an end-to-end communication link with STA2 includes In STA7 and STA8, the response frame of STA2 includes the identifier of STA7 and the status code field corresponding to STA7, and the status code field corresponding to the identifier of STA8 and STA8, and the status code field may include one bit, and the one bit is “1”. It is agreed to establish an end-to-end communication link. The one bit is "0", indicating that the end-to-end communication link is not established, and the status code field may be other lengths. The order of the first site (or the status code field corresponding to the first site) in the response frame may be arranged according to the MAC address of the site, and the identifier of the first site may be omitted in the response frame.

The confirmation frame sent by the access point (the confirmation frame includes the first confirmation information and/or the second confirmation information) includes a first site identifier, a second site identifier, a status code field, and the access point is first a link identifier assigned by the end-to-end communication link established between the site and the second site, the status code field is used to indicate whether the first site establishes an end-to-end communication link with the second site, the first site and the second site The link identifier can be used as an identifier for subsequent access point scheduling sites for end-to-end communication.

For example, the acknowledgement frame adopts a frame structure as shown in FIG. 11, and FIG. 11 includes a response frame corresponding to STA2 and STA6, and a response frame corresponding to STA1 and STA2. The response frames corresponding to STA1 and STA2 include the identifier of STA1, the identifier of STA2, the status code field, the end-to-end communication link identifier of STA1 and STA2, and the TBD field, which can be used to describe the communication capability of the station. When the status code field indicates that the establishment of the end-to-end communication link fails, the corresponding field for carrying the link identifier is invalid.

For example, if the request frame received by the access point indicates that multiple first sites request to establish an end-to-end link with the same second site, or the same first site requests to establish an end-to-end with multiple second sites. The link can be regarded as a process of establishing a plurality of one-to-one end-to-end communication links. At this time, the acknowledgement frame sent by the access point includes multiple acknowledgement information, and each acknowledgement information corresponds to one. A confirmation of the establishment of an end-to-end communication link. For example, STA7 (first site) and STA8 (first site) both request to establish an end-to-end communication link with STA2 (second site), and the acknowledgement frame can be as shown in FIG. In the illustrated structure, the confirmation frame includes the confirmation information corresponding to STA7 and STA2, and the confirmation information corresponding to STA8 and STA2. For example, STA3 (first station) requests to establish an end-to-end communication link with STA4 (second site) and STA9 (second site) respectively, and the acknowledgement frame can adopt the structure shown in FIG. 13, and the acknowledgement frame includes STA3 and STA4. Confirmation information, confirmation information corresponding to STA3 and STA9.

Optionally, if the acknowledgement information of the multiple end-to-end communication links is included in the acknowledgement frame, the order of the multiple acknowledgement information in the acknowledgement frame is the same as the order of the second site in the resource indication field of the trigger frame, and each The second site identifier can be omitted from the confirmation message. Further, if the acknowledgment information of the plurality of end-to-end communication links is included in the acknowledgment frame, the order of arranging the plurality of acknowledgment information in the acknowledgment frame is the same as the order of the second site in the resource indication field of the trigger frame, and the first site is The order of the second sites in the resource indication field of the trigger frame can be parsed, and the first site identifier and the second site identifier can be omitted in each confirmation information.

In this embodiment, optionally, the content indicated by the status code field in the acknowledgement frame and the end-to-end link identifier are indicated by using the same identifier field, and the status code field in the acknowledgement frame may be omitted and used for the bearer end. The field to the end link identifier. If the identifier field is all zeros, or all ones, or a certain value agreed by other protocols, it indicates that the end-to-end communication link fails to be established, and the confirmation frame includes the second confirmation information; otherwise, the identifier field indicates the end to The end communication link is successfully established, and the identifier field carries the end-to-end link identifier, and the acknowledgement frame includes the first acknowledgement information.

In this embodiment, the identifier of the site may be an identifier that can uniquely identify the site, such as a MAC address, an AID, or a Partial AID (PAID).

Corresponding to the access point, as shown in FIG. 14, on the first site side, the embodiment of the present invention provides a method for establishing an end-to-end communication link, including:

S1401: The first station sends a request frame to the access point, where the request frame is used to indicate that the first station requests to establish an end-to-end communication link with the at least one second station, and each of the first site and the at least one second site Have end-to-end communication capabilities;

S1402: The first station receives an acknowledgement frame sent by the access point, where the acknowledgement frame includes first acknowledgement information for indicating that the first station successfully establishes an end-to-end communication link with the at least one second site.

In this embodiment, the acknowledgement frame received by the first station further includes an indication that the first site and the at least one The second station establishes a second confirmation message that the end-to-end communication link fails. Optionally, the second confirmation information includes an identifier field, where the identifier field is used to indicate that the first station establishes an end-to-end communication link failure with the at least one second station.

In this embodiment, optionally, the request frame sent by the first station includes a first capability field, where the first capability field is used to indicate the communication capability of the first site. The first confirmation information received by the first station includes a second capability field, and the second capability field is used to indicate the communication capability of the second station. The first confirmation information may further include an identifier corresponding to the end-to-end communication link successfully established by the first station and each second station.

The content of the embodiment on the first site side refers to the content of the embodiment on the access point side, and details are not described herein again.

Corresponding to the access point and the first site, as shown in FIG. 15, on the second site side, the embodiment of the present invention provides a method for establishing an end-to-end communication link, including:

S1501: The second station receives a trigger frame sent by the access point, where the trigger frame is used to indicate that at least one first station requests to establish an end-to-end communication link with the second station, and a response resource for the second station to send the response frame. , each of the second site and the at least one first site has end-to-end communication capabilities;

S1502: The second station sends a response frame to the access point on the response resource, where the response frame includes first response information for indicating that the second station agrees to establish an end-to-end communication link with the at least one first station;

S1503. The second station receives an acknowledgement frame sent by the access point, where the acknowledgement frame includes first acknowledgement information for indicating that the second site successfully establishes an end-to-end communication link with the at least one first site.

In this embodiment, the trigger frame received by the second station includes a first site identifier, a second site identifier, and a response resource for the second station to send a response frame, so that the second station sends a response on the response resource allocated by the access point. The frame avoids the second station competing for resources with other sites when sending the response frame, thereby reducing the probability of a contention conflict between the sites during the establishment of the end-to-end communication link.

In this embodiment, optionally, the first confirmation information received by the second station includes an identifier corresponding to the end-to-end communication link successfully established by the second station and each of the first stations, and the link identifier may be used as a subsequent connection. The identifier of the inbound scheduling site for end-to-end communication. Acknowledgement frame received by the second station Also included is second acknowledgment information for indicating that the second station establishes an end-to-end communication link failure with the at least one first station. Optionally, the second confirmation information includes an identifier field, where the identifier field is used to indicate that the second station fails to establish an end-to-end communication link with the at least one first station.

In this embodiment, optionally, the second station receives a management frame or a control frame broadcast by the access point, where the management frame or the control frame is used to indicate a time when the access point sends the trigger frame; and the second station according to the management frame or the control The frame determines the moment when the access point sends the trigger frame, keeps the sleep state before the time when the access point sends the trigger frame, and keeps the awake state at the time when the access point sends the trigger frame to receive the trigger frame. That is, the second site can adopt the energy saving mode when there is no service demand before the time when the access point sends the trigger frame, so as to save the energy consumption of the second site.

In this embodiment, optionally, the trigger frame includes a first capability field, where the first capability field is used to indicate the communication capability of the first site; the first response information and/or the first acknowledgement information includes a second capability field, and a second The capability field is used to indicate the communication capability of the second site.

The content of the embodiment on the second site side refers to the content of the embodiment on the access point side, and details are not described herein again.

For example, in the method for establishing an end-to-end communication link provided by the embodiment of the present invention, an interaction process between an access point (AP), a first station, and a second station is as shown in FIG. 16 . In the 16th, the trigger frame and the acknowledgement frame sent by the AP are both transmitted in an Orthogonal Frequency Division Multiplexing (OFDM) manner, and the first station includes STA1 and STA5, and STA1 requests to establish an end-to-end communication link with STA2. STA5 requests to establish an end-to-end communication link with STA6. The AP triggers a random access procedure by using a Trigger Frame for Random Access. The STA1 and the STA5 respectively send request frames to the AP during the random access process, and the AP sends a block acknowledgement frame/acknowledgement frame to STA1 and STA5 respectively. To instruct the AP to receive the request frame sent by STA1 and STA5. The AP sends a trigger frame, and the trigger frame indicates that STA1 requests to establish an end-to-end communication link with STA2, and is used for STA2 to reply to the response resource of the response frame; STA5 requests to establish an end-to-end communication link with STA6 for STA6 reply response frame. Response resources. All STAs with end-to-end communication capabilities can receive the trigger frame. After STA2 and STA6 receive the trigger frame, STA2 and STA6 respectively reply the response frame to the AP on the respective response resources by using OFDMA. The response frame replied by STA2 includes the first response information, that is, STA2 agrees to establish end-to-end communication with STA1. Link, the response frame replied by STA6 includes the second response The message, STA6, does not agree to establish an end-to-end communication link with STA5. After receiving the response frame, the AP sends an acknowledgement frame, where the acknowledgement frame includes first acknowledgement information corresponding to STA1 and STA2, and second acknowledgement information corresponding to STA5 and STA6. The first acknowledgment information corresponding to STA1 and STA2 includes: an identifier of STA1, an identifier of STA2, a status code field for indicating that STA1 and STA2 establish an end-to-end communication link, and an end-to-end communication chain established by STA1 and STA2. The logo of the road. The second acknowledgment information corresponding to the STA5 and the STA6 includes: an identifier of the STA5, an identifier of the STA6, and a status code field for instructing the STA5 and the STA6 to establish an end-to-end communication link failure.

For example, in the method for establishing an end-to-end communication link provided by the embodiment of the present invention, the interaction process between the access point (AP), the first station, and the second station is as shown in FIG. 17 , and The difference between FIG. 16 is that both the request frame and the acknowledgement frame sent by the AP in FIG. 17 are transmitted in the OFDMA manner. In FIG. 17, after the AP receives the request frames of STA1 and STA5 respectively (STA1 requests to establish an end-to-end communication link with STA2, and STA5 requests to establish an end-to-end communication link with STA6), the AP moves to STA2 and STA6 in an OFDMA manner. Sending a request frame, the request frame may adopt the structure shown in FIG. 18, the request frame includes a request information field of STA2 and a request information field of STA6, and the request information field of STA2 includes an identifier of STA1 and a communication capability for describing STA1. The TBD field, the request information field of STA6 includes the identifier of STA5 and the TBD field for describing the communication capability of STA5. After the AP sends the request frame to the STA2 and the STA6, the AP sends a trigger frame, where the trigger frame includes response resources for the STA2 and STA6 reply response frames, respectively. STA2 and STA6 perform OFDMA on the respective response resources to reply the response frame to the AP. The response frame can adopt the structure shown in FIG. 19, and the AP sends an acknowledgement frame according to the received response frame.

For example, in the method for establishing an end-to-end communication link provided by the embodiment of the present invention, the interaction process between the access point (AP), the first station, and the second station is as shown in FIG. 20 . The difference from FIG. 16 is that, in FIG. 20, the trigger frame and the acknowledgement frame sent by the AP are transmitted in the OFDMA manner, and the preamble of the trigger frame indicates the resource for signaling signaling corresponding to each second station. The information corresponding to the second site includes: a first site identifier corresponding to the second site, a TBD field for describing the communication capability of the first site, and a response resource for the second site reply response frame. When the response resource of the second site is consistent with the signaling resource for carrying the information corresponding to the second site, the response resource of the second site may be omitted from the information corresponding to the second site. For example, triggering a frame The resource location of the signaling for carrying the information corresponding to the STA6 and the resource location of the signaling for carrying the information corresponding to the STA2 are indicated in the preamble, and the signaling for carrying the information corresponding to the STA2 includes the first station of the STA2. The ID and TBD fields are optional and include the response resources of STA2.

In this embodiment, the trigger frame sent by the access point may be a dedicated trigger frame or a normal trigger frame, that is, the access point carries the content indicated by the trigger frame in the common trigger frame in the embodiment, and the other information is included. Normal trigger frames are sent together.

In this embodiment, the end-to-end communication link establishment process initiated by the multiple first sites is uniformly coordinated and controlled by the access point, and for each first site, the first site may request to establish with one or more second sites. An end-to-end communication link, the access point allocates, for each second station, a response resource for replying to the response frame, the response frame is used to indicate whether the second station agrees to establish an end-to-end communication link with the first station, The second station can send a response frame on the allocated response resource, which avoids the second station competing for resources with other sites when sending the response frame, thereby reducing the probability of contention conflict between sites during the establishment of the end-to-end communication link. The technical solution provided by the embodiment of the present invention can avoid the situation that the regular communication in the BSS is affected due to the long-term competition of the site in the content of the competition, and improve the performance of the entire network. After the first station initiates the end-to-end communication link establishment process, the first station may determine to establish an end-to-end communication link with the multiple second sites respectively according to the response frames sent by the multiple second stations received by the access point. And the access point can simultaneously process end-to-end communication link requests initiated by multiple first sites, thereby improving end-to-end communication link establishment efficiency. The embodiment of the invention provides a method for establishing an end-to-end communication link, which can be integrated with end-to-end communication site discovery and end-to-end data transmission, so as to improve overall network efficiency.

Embodiment 2

Based on the above embodiment, the present invention further provides an access point, and the access point may adopt the method provided by the embodiment corresponding to FIG. 1(b). Referring to FIG. 21, the access point 2100 includes: a transceiver unit 2101. And processing unit 2102.

The transceiver unit 2101 is configured to receive, by the at least one first station, a request frame, where the request frame is used to indicate that the first station requests to establish an end-to-end communication link with the at least one second station, the at least one first station, and the at least one Each site in the second site has end-to-end communication capabilities;

The processing unit 2102 is configured to generate a trigger frame according to the request frame received by the transceiver unit 2101, where the trigger frame is used to indicate that each site in the at least one first station requests to establish an end-to-end communication link with the at least one second station, and Transmitting a response resource of the response frame to each of the at least one second site;

The transceiver unit 2101 is further configured to send, to the at least one second station, a trigger frame generated by the processing unit 2102, and receive, by the at least one second station, a response frame sent on the respective response resource, where the response frame includes The first station establishes first response information of the end-to-end communication link; and sends an acknowledgement frame to the at least one first station and the at least one second station, where the acknowledgement frame includes an indication that the first site and the at least one second site are successfully established. The first confirmation message of the end communication link.

Optionally, the response frame further includes second response information for indicating that the second station does not agree to establish an end-to-end communication link with the first station;

Optionally, the second confirmation information includes an identifier field, where the identifier field is used to indicate that the first station establishes an end-to-end communication link failure with the at least one second station.

Optionally, the trigger frame includes a first site identifier, a second site identifier, and a response resource for each second station to send a response frame.

Optionally, the request frame or the trigger frame includes a first capability field, where the first capability field is used to indicate the communication capability of the first site;

The first response information or the first acknowledgement information includes a second capability field, and the second capability field is used to indicate the communication capability of the second site.

Optionally, the first confirmation information includes an identifier corresponding to the end-to-end communication link successfully established by the first site and each second site.

Based on the above embodiment, the present invention further provides a first site, which may adopt the method provided by the embodiment corresponding to FIG. 14. Referring to FIG. 22, the first site 2200 includes: a processing unit 2201 and a transceiver unit. 2202.

The processing unit 2201 is configured to determine a request frame, where the request frame is used to indicate the first site request and at least A second site establishes an end-to-end communication link, and each of the first site and the at least one second site has end-to-end communication capabilities;

The transceiver unit 2202 is configured to send, to the access point, the request frame determined by the processing unit 2201, and receive an acknowledgement frame sent by the access point, where the acknowledgement frame includes, for indicating that the first site and the at least one second site successfully establish an end-to-end communication chain. The first confirmation message of the road.

Optionally, the confirmation frame further includes second confirmation information for indicating that the first station establishes an end-to-end communication link failure with the at least one second station.

Optionally, the request frame includes a first capability field, where the first capability field is used to indicate the communication capability of the first site;

The first confirmation information includes a second capability field, and the second capability field is used to indicate the communication capability of the second site.

Based on the above embodiment, the present invention further provides a second site, which may adopt the method provided by the embodiment corresponding to FIG. 15. Referring to FIG. 23, the second site 2300 includes: a transceiver unit 2301 and a processing unit. 2302.

The transceiver unit 2301 is configured to receive a trigger frame sent by the access point, where the trigger frame is used to indicate that the at least one first station requests to establish an end-to-end communication link with the second station, and the response resource used by the second station to send the response frame , each of the second site and the at least one first site has end-to-end communication capabilities;

The processing unit 2302 is configured to determine a response frame, where the response frame includes first response information for indicating that the second site agrees to establish an end-to-end communication link with the at least one first station;

The transceiver unit 2301 is further configured to: send, to the access point, the response frame determined by the processing unit 2302 to the access point; receive the acknowledgement frame sent by the access point, where the acknowledgement frame includes indicating that the second site and the at least one first site are successfully established. The first confirmation message of the end-to-end communication link.

Optionally, the confirmation frame further includes second confirmation information for indicating that the second station establishes an end-to-end communication link failure with the at least one first station.

Optionally, the second confirmation information includes an identifier field, where the identifier field is used to indicate that the second station fails to establish an end-to-end communication link with the at least one first station.

Optionally, the trigger frame includes a first site identifier, a second site identifier, and a response resource used by the second station to send the response frame.

Optionally, the trigger frame includes a first capability field, where the first capability field is used to indicate the communication capability of the first site;

Optionally, the first confirmation information includes an identifier corresponding to the end-to-end communication link successfully established by the second site and each of the first sites.

It should be noted that the division of the unit in the embodiment of the present invention is schematic, and is only a logical function division, and the actual implementation may have another division manner. In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

An integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, can be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application, in essence or the contribution to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) or a processor to perform all or part of the steps of the various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

Based on the above embodiment, the present invention also provides an access point, which can be used in FIG. 1(b) The method provided by the corresponding embodiment may be the same device as the access point shown in FIG. 21. Referring to FIG. 24, the access point 2400 includes a transceiver 2401, a processor 2402, a bus 2403, and a memory 2404, where:

The transceiver 2401, the processor 2402, and the memory 2404 are connected to each other through a bus 1803. The bus 2403 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus. Wait. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in FIG. 24, but it does not mean that there is only one bus or one type of bus.

The transceiver 2401 is configured to receive, by the at least one first station, a request frame, where the request frame is used to indicate that the first station requests to establish an end-to-end communication link with the at least one second station, the at least one first station, and the at least one Each site in the second site has end-to-end communication capabilities;

The processor 2402 is configured to generate a trigger frame according to the request frame received by the transceiver 2401, where the trigger frame is used to indicate that each of the at least one first station requests to establish an end-to-end communication link with the at least one second station, and Transmitting a response resource of the response frame to each of the at least one second site;

The transceiver 2401 is further configured to send, to the at least one second station, a trigger frame generated by the processor 2402; receive a response frame sent by the at least one second station on the respective response resource, where the response frame includes The first station establishes first response information of the end-to-end communication link; and sends an acknowledgement frame to the at least one first station and the at least one second station, where the acknowledgement frame includes an indication that the first site and the at least one second site are successfully established. The first confirmation message of the end communication link.

The access point 2400 also includes a memory 2404 for storing programs and the like. In particular, the program can include program code, the program code including computer operating instructions. The memory 2404 may include a random access memory (RAM), and may also include a non-volatile memory such as at least one disk storage. The processor 2402 executes the application stored in the memory 2404 to implement the above end-to-end communication link establishment method.

Based on the above embodiment, the present invention further provides a first site, which may adopt the method provided by the embodiment corresponding to FIG. 14, and may be the same device as the first site shown in FIG. Referring to FIG. 25, the first site 2500 includes a processor 2501, a transceiver 2502, a bus 2503, and a memory 2504, wherein:

The processor 2501, the transceiver 2502, and the memory 2504 are connected to each other through a bus 2503; the bus 2503 may be a PCI bus or an EISA bus or the like. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 25, but it does not mean that there is only one bus or one type of bus.

The processor 2501 is configured to determine a request frame, where the request frame is used to indicate that the first site requests to establish an end-to-end communication link with the at least one second site, and each of the first site and the at least one second site has a terminal End communication capability;

The transceiver 2502 is configured to send, to the access point, the request frame determined by the processor 2501, and receive an acknowledgement frame sent by the access point, where the acknowledgement frame includes an indication that the first station and the at least one second station successfully establish an end-to-end communication chain. The first confirmation message of the road.

The first site 2500 also includes a memory 2504 for storing programs and the like. In particular, the program can include program code, the program code including computer operating instructions. The memory 2504 may include RAM and may also include non-volatile memory, such as at least one disk storage. The processor 2501 executes the application stored in the memory 2504 to implement the above end-to-end communication link establishment method.

Based on the above embodiment, the present invention further provides a second site, which may adopt the method provided by the embodiment corresponding to FIG. 15, and may be the same device as the second site shown in FIG. Referring to FIG. 26, the second site 2600 includes a transceiver 2601, a processor 2602, a bus 2603, and a memory 2604, where:

The transceiver 2601, the processor 2602, and the memory 2604 are connected to each other through a bus 2603; the bus 2603 may be a PCI bus or an EISA bus or the like. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in FIG. 26, but it does not mean that there is only one bus or one type of bus.

The transceiver 2601 is configured to receive a trigger frame sent by the access point, where the trigger frame is used to indicate that the at least one first station requests to establish an end-to-end communication link with the second station, and the response resource used by the second station to send the response frame. , each of the second site and the at least one first site has end-to-end communication capabilities;

The processor 2602 is configured to determine a response frame, where the response frame includes first response information for indicating that the second site agrees to establish an end-to-end communication link with the at least one first station;

The transceiver 2601 is further configured to send, by the response resource, the response determined by the processor 2602 to the access point. And receiving an acknowledgement frame sent by the access point, where the acknowledgement frame includes first acknowledgement information for indicating that the second site successfully establishes an end-to-end communication link with the at least one first site.

The second site 2600 also includes a memory 2604 for storing programs and the like. In particular, the program can include program code, the program code including computer operating instructions. Memory 2604 may include RAM and may also include non-volatile memory, such as at least one disk storage. The processor 2602 executes the application stored in the memory 2604 to implement the above end-to-end communication link establishment method.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a general purpose computer, a special purpose computer, An processor of an embedded processor or other programmable data processing device to generate a machine such that instructions executed by a processor of a computer or other programmable data processing device are generated for implementation in a flow or a flow of flowcharts and/or Or a block diagram of a device in a box or a function specified in a plurality of boxes.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

Although the preferred embodiment of the invention has been described, it will be apparent to those skilled in the < Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and

It is apparent that those skilled in the art can make various modifications and variations to the embodiments of the invention without departing from the spirit and scope of the embodiments of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the embodiments of the invention.

Claims

An end-to-end communication link establishing method, comprising:

Receiving, by the access point, a request frame respectively sent by the at least one first station, where the request frame is used to indicate that the first station requests to establish an end-to-end communication link with the at least one second station, the at least one first station and the Each of the at least one second site has end-to-end communication capabilities;

The access point generates a trigger frame, the trigger frame is used to indicate that each of the at least one first station requests to establish an end-to-end communication link with the at least one second station, and for the at least one second Each site in the site sends a response resource for the response frame;

Sending, by the access point, the trigger frame to the at least one second station;

Receiving, by the access point, a response frame sent by the at least one second station on a respective response resource, the response frame including first response information indicating that the second station agrees to establish an end-to-end communication link with the first station ;

An access point sends an acknowledgement frame to the at least one first site and the at least one second site, the acknowledgement frame including a first indication that the first site and the at least one second site successfully establish an end-to-end communication link A confirmation message.
The method of claim 1, wherein the response frame further comprises second response information for indicating that the second station does not agree to establish an end-to-end communication link with the first station;

Correspondingly, the confirmation frame further includes second confirmation information for indicating that the first station establishes an end-to-end communication link failure with the at least one second station.
The method of claim 2, wherein the second confirmation information comprises an identification field, the identification field being used to indicate that the first station establishes an end-to-end communication link failure with the at least one second station.
The method according to claim 1 or 3, wherein the trigger frame comprises a first site identifier, a second site identifier, and a response resource for each second station to send a response frame.
The method according to claim 1, wherein the request frame or the trigger frame comprises a first capability field, and the first capability field is used to indicate a communication capability of the first station;

The first response information or the first acknowledgement information includes a second capability field, where the second capability field is used to indicate a communication capability of the second site.
The method of claim 1, wherein the first confirmation information comprises an identifier corresponding to the end-to-end communication link successfully established by the first station and each of the second stations.
An end-to-end communication link establishing method, comprising:

The first station sends a request frame to the access point, where the request frame is used to indicate that the first station requests to establish an end-to-end communication link with the at least one second station, each of the first station and the at least one second station Each site has end-to-end communication capabilities;

The first station receives an acknowledgement frame sent by the access point, and the acknowledgement frame includes first acknowledgement information for indicating that the first station successfully establishes an end-to-end communication link with the at least one second site.
The method of claim 7, wherein the confirmation frame further comprises second confirmation information for indicating that the first station establishes an end-to-end communication link failure with the at least one second station.
The method of claim 8, wherein the second confirmation information comprises an identification field, the identification field being used to indicate that the first station establishes an end-to-end communication link failure with the at least one second station.
The method of claim 7, wherein the request frame comprises a first capability field, the first capability field being used to indicate a communication capability of the first site;

The first acknowledgement information includes a second capability field, and the second capability field is used to indicate a communication capability of the second site.
The method of claim 7, wherein the first confirmation information comprises an identifier corresponding to the end-to-end communication link successfully established by the first station and each of the second stations.
An end-to-end communication link establishing method, comprising:

The second station receives a trigger frame sent by the access point, where the trigger frame is used to indicate that at least one first station requests to establish an end-to-end communication link with the second station, and a response resource for the second station to send the response frame, Each of the second site and the at least one first site has end-to-end communication capabilities;

The second station sends a response frame to the access point on the response resource, where the response frame includes Instructing the second site to agree to establish first response information for the end-to-end communication link with the at least one first site;

The second station receives an acknowledgement frame sent by the access point, where the acknowledgement frame includes first acknowledgement information for indicating that the second site successfully establishes an end-to-end communication link with the at least one first site.
The method of claim 12, wherein the confirmation frame further comprises second confirmation information for indicating that the second station establishes an end-to-end communication link failure with the at least one first station.
The method of claim 13, wherein the second confirmation information comprises an identification field, the identification field being used to indicate that the second station fails to establish an end-to-end communication link with the at least one first station.
The method according to claim 12 or 14, wherein the trigger frame comprises a first site identifier, a second site identifier, and a response resource for the second station to send a response frame.
The method of claim 12, wherein the trigger frame comprises a first capability field, the first capability field being used to indicate a communication capability of the first station;

The first response information or the first acknowledgement information includes a second capability field, where the second capability field is used to indicate a communication capability of the second site.
The method of claim 12, wherein the first confirmation information comprises an identifier corresponding to the end-to-end communication link successfully established by the second station with each of the first stations.
An access point, comprising:

a transceiver unit, configured to receive a request frame respectively sent by the at least one first station, where the request frame is used to indicate that the first station requests to establish an end-to-end communication link with the at least one second station, the at least one first station and Each of the at least one second site has end-to-end communication capabilities;

a processing unit, configured to generate a trigger frame according to the request frame received by the transceiver unit, where the trigger frame is used to indicate that each site request in the at least one first site establishes an end-to-end with at least one second site a communication link, and a response resource for each of the at least one second station to transmit a response frame;

The transceiver unit is further configured to send the processing unit to the at least one second station to generate The trigger frame; receiving a response frame sent by the at least one second station on a respective response resource, the response frame including a first part for indicating that the second station agrees to establish an end-to-end communication link with the first station a response message; an acknowledgement frame is sent to the at least one first site and the at least one second site, the acknowledgement frame comprising an indication that the first site and the at least one second site successfully establish an end-to-end communication link First confirmation message.
The access point of claim 18, wherein the response frame further comprises second response information for indicating that the second station does not agree to establish an end-to-end communication link with the first station;

Correspondingly, the confirmation frame further includes second confirmation information for indicating that the first station establishes an end-to-end communication link failure with the at least one second station.
The access point according to claim 19, wherein the second confirmation information comprises an identification field, the identifier field is used to indicate that the first station establishes an end-to-end communication link failure with the at least one second station.
The access point according to claim 18 or 20, wherein the trigger frame comprises a first site identifier, a second site identifier, and a response resource for each second station to send a response frame.
The access point according to claim 18, wherein the request frame or the trigger frame comprises a first capability field, where the first capability field is used to indicate a communication capability of the first station;

The first response information or the first acknowledgement information includes a second capability field, where the second capability field is used to indicate a communication capability of the second site.
The access point of claim 18, wherein the first acknowledgement information comprises an identifier corresponding to the end-to-end communication link successfully established by the first site with each of the second sites.
A first site, comprising:

a processing unit, configured to determine a request frame, where the request frame is used to indicate that the first site requests to establish an end-to-end communication link with the at least one second site, each of the first site and the at least one second site Have end-to-end communication capabilities;

a transceiver unit, configured to send the request frame determined by the processing unit to an access point, and receive an acknowledgement frame sent by the access point, where the acknowledgement frame includes an indication that the first site and the at least one second site are successfully established. The first confirmation message of the end communication link.
The first station of claim 24, wherein the confirmation frame further comprises second confirmation information for indicating that the first station establishes an end-to-end communication link failure with the at least one second station.
The first station according to claim 25, wherein the second confirmation information comprises an identification field, the identifier field is used to indicate that the first station establishes an end-to-end communication link failure with the at least one second station.
The first station according to claim 24, wherein the request frame includes a first capability field, and the first capability field is used to indicate a communication capability of the first site;

The first acknowledgement information includes a second capability field, and the second capability field is used to indicate a communication capability of the second site.
The first station according to claim 24, wherein the first confirmation information comprises an identifier corresponding to the end-to-end communication link successfully established by the first station and each second station.
A second site, comprising:

a transceiver unit, configured to receive a trigger frame sent by the access point, where the trigger frame is used to indicate that at least one first station requests to establish an end-to-end communication link with the second station, and a response for the second station to send a response frame a resource, the second site and each of the at least one first site have end-to-end communication capabilities;

a processing unit, configured to determine a response frame, where the response frame includes first response information for indicating that the second station agrees to establish an end-to-end communication link with the at least one first station;

The transceiver unit is further configured to send the response frame determined by the processing unit to the access point on the response resource, and receive an acknowledgement frame sent by the access point, where the acknowledgement frame includes the second site for indicating A first confirmation message that successfully establishes an end-to-end communication link with at least one first site.
The second station of claim 29, wherein the confirmation frame further comprises second confirmation information for indicating that the second station establishes an end-to-end communication link failure with the at least one first station.
The second station according to claim 30, wherein the second confirmation information comprises an identification field, where the identification field is used to indicate that the second site establishes an end with the at least one first site. The end communication link failed.
The second station according to claim 29 or 31, wherein the trigger frame comprises a first site identifier, a second site identifier, and a response resource for the second station to send a response frame.
The second station according to claim 29, wherein the trigger frame comprises a first capability field, where the first capability field is used to indicate a communication capability of the first station;

The first response information or the first acknowledgement information includes a second capability field, where the second capability field is used to indicate a communication capability of the second site.
The second station according to claim 29, wherein the first confirmation information comprises an identifier corresponding to the end-to-end communication link successfully established by the second station with each of the first stations.