CN116133069A

CN116133069A - Method, device, equipment and storage medium for establishing block session mechanism

Info

Publication number: CN116133069A
Application number: CN202310114114.8A
Authority: CN
Inventors: 朱旻晨; 吴昊; 尹蕾
Original assignee: Yibin Jimi Photoelectric Co Ltd
Current assignee: Yibin Jimi Photoelectric Co Ltd
Priority date: 2023-02-13
Filing date: 2023-02-13
Publication date: 2023-05-16

Abstract

The invention discloses a method, a device, equipment and a storage medium for establishing a block session mechanism, and relates to the technical field of communication. The initiator of the block conversation process includes the instruction of the block conversation mechanism establishment which needs to carry out joint transmission and the identification of the block conversation process in the added block confirmation request frame, after the receiver receives the added block confirmation request frame, the block conversation establishment information is not fed back to the initiator of the block conversation process in the following frame, but the negotiation of the block conversation mechanism establishment is carried out with other joint transmission participants, after the response of the other joint transmission participants is obtained, the added block confirmation response frame is sent to the initiator of the block conversation process, the block conversation mechanism is established between a plurality of wireless access points and terminal equipment, and the air interface expenditure is reduced.

Description

Method, device, equipment and storage medium for establishing block session mechanism

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, a device, and a storage medium for establishing a block session mechanism.

Background

In WLAN networks, a device performs demodulation verification on a data unit sent by a peer device, and often needs to perform an acknowledgement for whether the data unit is correctly received, so that the peer device can know whether the device correctly receives the data unit, and further know whether to retransmit the data unit at the next transmission. In the normal reply mode, each data unit is acknowledged by a separate Ack frame, which increases the overhead of the air interface occupied by the acknowledgement, thereby reducing the overall throughput of the WLAN network. The advent of the block session mechanism solves this problem well. The Block session refers to replying to a plurality of data units through a single Block Ack frame, that is, one Block Ack frame replaces a plurality of Ack frames, thereby improving the utilization efficiency of transmission resources.

In order to enable a block session mechanism between two devices (Initiator data sender and Initiator data receiver), negotiation of a block session, i.e., ADDBA, between them is required. The negotiation process is first initiated by the Initiator to send an add block acknowledgement Request frame (e.g., an ADDBA Request frame) to the reference containing the proposed multiple block session operating parameters. The entity sends an Ack frame to the Initiator after acknowledging receipt of the frame and an add block acknowledgment Response frame (e.g., an ADDBA Response frame) immediately following the Ack frame, which contains whether the block session negotiation is acceptable and a number of operating parameters indicated by the entity for the block session negotiation. The Initiator, upon receiving the ADDBA Response frame, sends an Ack frame to the RECIPIENT, after which both will conduct a block session of data transceiving according to the operating parameters contained in the ADDBA Response frame.

Disclosure of Invention

In the newly proposed next generation WLAN network, one of the most significant features is that a plurality of wireless access points can be used for coordinated or joint services for terminal devices. Among these, there is a data transmission method called joint transmission J-TX, in which a plurality of wireless access points simultaneously transmit data to a terminal device, thereby improving the effective throughput of the terminal device. However, J-TX requires that the terminal device be associated with multiple wireless access points simultaneously to receive data, and if a block session mechanism is required, the existing ADDBA procedure will not be satisfactory because it currently exists only between a single wireless access point and the terminal device. In view of the foregoing, the present invention provides a method, apparatus, device and storage medium for establishing a block session mechanism between a plurality of wireless access points and a terminal device.

In a first aspect, the present invention provides a method for establishing a block session mechanism, including:

receiving a first added block acknowledgement request frame sent by a first access point, wherein the first added block acknowledgement request frame comprises a block session identifier or an identifier of a block session initiator, the block session identifier is used for identifying a block session process, the identifier of the block session initiator is used for identifying an identifier of the initiator of the block session process, and the identifier of the block session initiator is set as the identifier of the first access point;

transmitting a second added block acknowledgement request frame to a second access point according to the first added block acknowledgement request frame, wherein the second added block acknowledgement request frame contains a block session identifier or an identifier of a block session initiator, and the block session identifier or the identifier of the block session initiator contained in the second added block acknowledgement request frame is the same as the setting of the first added block acknowledgement request frame;

receiving a second added block acknowledgement response frame sent by a second access point, wherein the second added block acknowledgement response frame indicates whether to accept a request and contains a block session identifier or an identifier of a block session initiator, and the block session identifier or the identifier of the block session initiator contained in the second added block acknowledgement response frame is the same as the setting of the second added block acknowledgement request frame;

And sending a first added block acknowledgement response frame to the first access point according to the second added block acknowledgement response frame, wherein the first added block acknowledgement response frame indicates whether to accept the request and contains a block session identifier or an identifier of a block session initiator, and the block session identifier or the identifier of the block session initiator contained in the first added block acknowledgement response frame is the same as the setting of the second added block acknowledgement response frame.

In a second aspect, the present invention provides a method for establishing a block session mechanism, including:

a first added block acknowledgement request frame is sent to a terminal, the first added block acknowledgement request frame is used for indicating the establishment of a block session mechanism needing joint transmission, the first added block acknowledgement request frame comprises a block session identifier or an identifier of a block session initiator, wherein the block session identifier is used for identifying a block session process, the identifier of the block session initiator is used for identifying an identifier of the initiator of the block session process, and the identifier of the block session initiator is set as an identifier of a first access point;

and receiving a first added block acknowledgement response frame sent by the terminal, wherein the first added block acknowledgement response frame indicates whether to accept the request and contains a block session identifier or an identifier of a block session initiator, and the block session identifier or the identifier of the block session initiator contained in the first added block acknowledgement response frame is the same as the setting of the first added block acknowledgement request frame.

In a third aspect, the present invention provides an apparatus for establishing a block session mechanism, including a block session mechanism establishment module, where the block session mechanism establishment module is configured to perform the following steps:

In a possible implementation manner, the first added block acknowledgement request frame further includes a timeout threshold, which is used to indicate that the establishment of the block session mechanism is terminated when the added block acknowledgement response frame is not received within the timeout threshold.

In a possible implementation manner, the first added block acknowledgement request frame, the second added block acknowledgement response frame and the first added block acknowledgement response frame further indicate types of frames, and the types of frames indicated in the first added block acknowledgement request frame and the second added block acknowledgement request frame are added block acknowledgement request frames for joint transmission, and the types of frames indicated in the second added block acknowledgement response frame and the first added block acknowledgement response frame are added block acknowledgement response frames for joint transmission.

In a possible implementation manner, the sending, according to the first add block acknowledgement request frame, a second add block acknowledgement request frame to a second access point includes:

and if the category of the indication frame in the first added block acknowledgement request frame is an added block acknowledgement request frame for joint transmission, or the first added block acknowledgement request frame contains a block session identifier or an identifier of a block session initiator, sending a second added block acknowledgement request frame to a second access point.

In a possible implementation manner, the first added block acknowledgement request frame, the second added block acknowledgement response frame, and the first added block acknowledgement response frame further include block session operation information, and sending the second added block acknowledgement request frame to the second access point according to the first added block acknowledgement request frame includes:

and setting the block session operation information in the second added block acknowledgement request frame to be the same as the first added block acknowledgement request frame, and sending the second added block acknowledgement request frame to a second access point.

In a possible implementation manner, the sending the first add block acknowledgement response frame to the first access point according to the second add block acknowledgement response frame includes:

Setting the block session operation information in the first added block acknowledgement response frame to be the same as the second added block acknowledgement response frame, or setting the block session operation information in the first added block acknowledgement response frame to simultaneously meet the requirements of a first access point and a second access point according to the block session operation information in the first added block acknowledgement request frame and the second added block acknowledgement response frame;

a first add block acknowledgement response frame is sent to the first access point.

In a possible implementation manner, the block session mechanism establishment module is further configured to perform the following steps:

receiving a second null data packet announcement frame sent by a second access point;

receiving a second empty data packet frame sent by a second access point;

measuring a channel between the second access point and the second null data packet frame;

and sending a channel detection feedback frame to the first access point, wherein the channel detection feedback frame comprises a channel detection result between the first access point and the second access point.

receiving a first null data packet announcement frame sent by a first access point;

Receiving a first empty data packet frame sent by a first access point;

measuring a channel between the first access point and the first empty data packet frame;

the channel sounding feedback frame includes a channel sounding result with the first access point.

In a fourth aspect, the present invention provides an apparatus for establishing a block session mechanism, including a block session mechanism establishment module, where the block session mechanism establishment module is configured to perform the following steps:

In a possible implementation manner, the first added block acknowledgement request frame and the first added block acknowledgement response frame further indicate a type of frame, and the type of the frame indicated in the first added block acknowledgement request frame is an added block acknowledgement request frame for joint transmission, and the type of the frame indicated in the first added block acknowledgement response frame is an added block acknowledgement response frame for joint transmission.

transmitting a first frame to a second access point, wherein the first frame is used for indicating to perform channel detection on a terminal;

receiving a channel detection feedback frame sent by a terminal, wherein the channel detection feedback frame comprises a second channel detection result between the terminal and a second access point;

and judging whether the second channel detection result meets a second preset condition or not.

Transmitting a first null data packet announcement frame to the terminal;

transmitting a first empty data packet frame to a terminal, and indicating the terminal to perform channel detection according to the first empty data packet frame;

the channel sounding feedback frame comprises a first channel sounding result of the terminal according to the first empty data packet frame;

and judging whether the first channel detection result meets a first preset condition or not.

transmitting a multi-access point selection request frame to a second access point, wherein the multi-access point selection request frame indicates a request to perform joint transmission and comprises an identifier of a terminal;

and receiving a multi-access point selection response frame sent by the second access point, wherein the multi-access point selection response frame indicates whether to agree with the request.

In a fifth aspect, the present invention provides an electronic device comprising a memory, a processor and a computer program stored on the memory, the processor executing the computer program to implement the method of the first or second aspect.

In a sixth aspect, the present invention provides a computer readable storage medium having stored thereon a computer program which when executed by a processor implements the method of the first or second aspect.

In a seventh aspect, the present invention provides a computer program product comprising computer readable code, or a non-transitory computer readable storage medium carrying computer readable code, which when run in an electronic device, causes a processor in the electronic device to perform the method of the first or second aspect.

It should be noted that, the apparatus according to the third aspect is configured to perform the method provided in the first aspect, the apparatus according to the fourth aspect is configured to perform the method provided in the second aspect, the electronic device according to the fifth aspect, the storage medium according to the sixth aspect, and the computer program product according to the seventh aspect are configured to perform the method provided in the first aspect or the second aspect, so that the same advantages as those of the method provided in the first aspect or the second aspect can be achieved, and the present invention will not be repeated.

In the invention, the initiator of the block conversation process contains the instruction of establishing the block conversation mechanism which needs to carry out joint transmission and the identification of the block conversation process in the added block confirmation request frame, after the receiver receives the added block confirmation request frame, the receiver does not feed back the block conversation establishment information to the initiator of the block conversation process in the following frame, but carries out negotiation of the establishment of the block conversation mechanism with other joint transmission participants, and after the response of the other joint transmission participants is obtained, the added block confirmation response frame is sent to the initiator of the block conversation process, thereby realizing the establishment of the block conversation mechanism between a plurality of wireless access points and terminal equipment and reducing the air interface expenditure.

Drawings

Fig. 1 is a schematic structural diagram of a communication system according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a method for establishing a block session mechanism according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.

Detailed Description

In order to better understand the technical solutions of the present invention, the following description will clearly and completely describe the technical solutions of the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. While the present disclosure has been described in terms of an exemplary embodiment or embodiments, it should be understood that each aspect of the disclosure may be separately provided as a complete solution. The following embodiments and features of the embodiments may be combined with each other without conflict.

In the present invention, "at least one item" means one or more items, and "multiple items" means two or more items. In order to clearly describe the technical solution of the embodiment of the present invention, in the embodiment of the present invention, the words "first", "second", etc. are used to distinguish identical items or similar items having substantially the same function and effect, and those skilled in the art will understand that the words "first", "second", etc. do not limit the number and execution order, but merely illustrate and distinguish between the objects of the description, without dividing the order, nor do they indicate that the number of devices or messages in the embodiment of the present invention is particularly limited, and cannot constitute any limitation of the embodiment of the present invention. The term "comprising" is used to indicate the presence of the features stated hereafter, but does not exclude the addition of other features.

Fig. 1 is a schematic structural diagram of a communication system according to an embodiment of the present invention. As shown in fig. 1, the communication system includes an access point AP1, an access point AP2, and a terminal STA1, where the AP1 and the AP2 may form a multi-AP network by a wired or wireless backhaul manner, so as to exchange data and control and management commands and parameters in the network. AP1 and AP2 and STA1 are associated in a wireless manner, i.e. STA1 and AP2 have at least one same or different link available for data, control and management signaling. Each AP in the composed Multi-AP network has a unique identifier Multi-AP ID so that AP1 and AP2 can be uniquely identified and determined by the APs and end devices in the Multi-AP network. The APs may operate cooperatively, such as coordinated orthogonal frequency division multiple access transmission mode, coordinated spatial multiplexing transmission mode, coordinated beamforming transmission mode, and joint transmission mode (J-TX), directly or indirectly. The J-TX refers to a transmission mode for synchronously transmitting the same data to the target STA1 by using at least two APs associated with the terminal STA1 in the same multi-AP network.

In the embodiment of the invention, an Access Point (AP) refers to wireless access point equipment supporting an 802.11 protocol, and has wireless receiving and transmitting functions, such as a router, a wireless switch and the like; the terminal refers to a device with wireless transceiving function, such as a mobile phone, a computer, a television, a projector, etc., which supports 802.11 protocol. It should be understood that fig. 1 is only a schematic architecture of a communication system, and the number, types, etc. of devices in the communication system are not limited in the embodiment of the present invention, and may include more terminals or access points. Furthermore, those skilled in the art will appreciate that the term "Access Point (AP)" in accordance with the principles and functions described herein may also be used to describe an access port or any other access point capable of receiving and transmitting wireless signals within a network architecture, and thus, the use of an access point is merely exemplary.

With continued reference to fig. 1, AP1 has data to send to STA1 associated therewith, and AP1 may choose to send data to STA1 in a J-TX manner to ensure stability of transmission. For example, AP1 may obtain channel information between STA1 and AP2, or between STA1 and AP2, and between STA1 and AP1 to ensure that STA1 obtains an acceptable signal-to-noise-and-interference ratio to properly demodulate the signal, e.g., AP1 may instruct AP2 to send a null data packet frame (NDP) for STA1 to measure its channel with AP 2. When the channel quality satisfies the condition, AP1 sends a multiple access point selection request frame (e.g., m-AP Selection Request frame) to AP2 requesting to join in the group jointly transmitted to STA1, and AP2 sends a multiple access point selection response frame (e.g., m-AP SelectionResponse frame) to AP1 indicating whether it is joining. When indicated as engaged, AP1 seeks a block session mechanism that achieves the same configuration parameters as AP2 and STA1, i.e., ADDBA negotiation for joint transmission. In other embodiments, the AP1 may also negotiate with other access points (such as AP 2) whether it can participate in joint transmission to the STA1, then acquire channel information between the access point and the STA1 that can participate in joint transmission to the STA1, and then the AP1 seeks a block session mechanism that achieves the same configuration parameters as the access point and the STA1 that satisfy the channel quality condition. A method of joint transmission is exemplarily given below.

S1001, the AP1 sends a null data packet announcement frame (NDPA) to the STA1, where information that may indicate that the STA1 needs feedback, such as Received Signal Strength (RSSI), signal-to-noise-and-interference ratio (SINR), channel State Information (CSI), or beamforming feedback matrix, etc.

S1002, after sending the NDPA, a short interframe space SIFS, where the AP1 sends the NDP frame to the STA1, where the short training sequence may be identified by the STA1 for signal detection, symbol synchronization, and coarse frequency offset estimation, and the long training sequence may be identified for accurate frequency offset estimation and channel estimation by the STA 1.

S1003, after the NDP frame of the AP1 is sent, the AP1 sends a probe Poll frame (e.g. a Sounding Poll frame) to the AP2, indicating that the AP2 can start channel probing for the STA 1.

And S1004, after receiving the Sounding Poll frame, the AP2 repeats the step of channel detection between the AP1 and the STA 1.

S1005, after STA1 completes channel sounding with AP1 and AP2, STA1 sends a channel sounding feedback frame to AP1, which includes the RSSI or SINR between all participating access points (i.e. AP1 and AP 2) and STA1, respectively, and may include CSI and beamforming feedback matrix V between AP1 and AP2 estimated by STA1 and STA 1.

S1006, after receiving the channel information fed back by the STA1, the AP1 evaluates the channel quality between the AP2 and the STA1, for example, taking the received signal strength RSSI as a reference standard, if one of the following conditions is satisfied:

The absolute value of the difference between the received signal strength RSSI1 of the AP1 for the STA1 and the received signal strength RSSI2 of the AP2 for the STA1 is smaller than a first threshold;

RSSI2 is greater than or equal to a second threshold;

AP1 will select AP2 as a member potentially J-TX to STA 1. It should be understood that STA1 may only probe its channel with AP2 when the evaluation condition is b.

S1007, AP1 sends an m-AP Selection Request frame to AP2, which contains a parameter indicating that the type of transmission mode that is desired to be used with AP2 is J-TX, and an identification indicating the terminal STA1 that receives the data.

S1008, after receiving the m-AP Selection Request frame, if the AP2 does not have the transmitted time-frequency resource at this time, the AP2 does not reply to the selection request of the AP 1. If AP2 has obtained a transmission opportunity at this time, an m-AP Selection Response frame is replied to AP1 containing information indicating that AP2 either accepted or rejected the J-TX request of AP 1. If no m-AP Selection Response frame reply is received after a period of m-AP Selection Request frame transmission, AP1 will reject the selection request as AP 2.

S1009, when the AP2 receives the selection request of the AP1 at any time, the AP1 takes the AP2 as a member capable of J-TX to the STA 1.

In order to reduce the overhead of null interface overhead from Ack-by-Ack replies to multiple accepted data units, AP1 and AP2 need to establish a Block Ack (BA) mechanism with STA1 for use in J-TX. Fig. 2 is a flowchart of a method for establishing a block session mechanism according to an embodiment of the present invention. As shown in fig. 2, the method for establishing the block session mechanism includes the following:

S2001, AP1 sends a first ADDBA Request frame to STA1, which contains a block session identifier or an identifier of the block session initiator, to indicate to the receiver that the J-TX ADDBA operation needs to be performed and identify the ADDBA procedure. Wherein the block session identifier is used to identify the block session process, and the identifier of the block session initiator is used to identify the identifier of the initiator of the block session process.

Illustratively, the ADDBA Request frame contains the following parameters:

category: the class of the action frame, the embodiment of the invention indicates that the action frame belongs to a Block Ack;

block Ack Action: optionally, the type of the Block Ack frame is indicated as a J-TX ADDBA Request frame, i.e., a frame used for J-TX;

dialog Token: a dialog token for matching the request and response of the action frame;

block Ack Parameter Set: a set of block session parameters;

block Ack Timeout Value: a block session timeout threshold value, which indicates that if a block session mechanism is established, there is no frame exchange within the threshold value time, the block session mechanism is interrupted;

block Ack Starting Sequence Control: block session initiation sequence control;

J-TX Parameter Set: and combining the transmission parameter sets.

Examples of parameters included in Block Ack Parameter Set are as follows:

a-MSDU Supported: set to 1 indicates that the supporting QoS data frame carries an a-MSDU; setting to 0 means that the QoS data frame is not supported to carry an A-MSDU;

block Ack Policy: setting to 1 indicates support for immediate feedback BA; setting to 0 indicates support for delayed feedback BA;

TID: a traffic identifier indicating a type of data requested;

buffer Size: indicates the number of buffers available for this TID, each buffer being the maximum number of bytes of a single MSDU (when the a-MSDU Supported field is 0) or a-MSDU (when the a-MSDU Supported field is 1).

Block Ack Starting Sequence Control include the following examples of parameters:

segment Number: a fragment value indicating a first or next MSDU or a-MSDU to be transmitted;

starting Sequence Number: a Sequence Number (SN) indicating the first or next MSDU or a-MSDU that the J-TX needs to transmit.

Examples of parameters included in the J-TX Parameter Set are as follows:

setup Group ID: an identifier indicating an ADDBA procedure to which the ADDBA Request frame belongs, which may be in the form of a natural number;

ADDBA Timeout Value: optionally, it indicates how long during this time the ADDBA is established, the establishment of this block session mechanism will be terminated when no ADDBA Response frame from STA1 is received.

Alternatively, the J-TX Parameter Set contains the following parameters:

initiating AP ID: the identifier indicating the starting initiator of the ADDBA process, which is the identifier of AP1 in the embodiment of the present invention, may be a MAC address or a Multi-AP ID;

The ADDBA procedure refers to the procedure from the initiation of an ADDBA negotiation request by the initiator AP1 to the receipt of complete feedback (directly or indirectly) about the negotiation of the AP2 pair. When the receiver receives the same value of Setup Group ID or Initiating AP ID from different ADDBA Request frames or ADDBA Response frames in the ADDBA process, these ADDBA Request frames or ADDBA Response frames are regarded as belonging frames of this J-TX ADDBA process, but not belonging frames of other ADDBA processes, thereby functioning as disambiguation.

After receiving the ADDBA Request frame sent by the AP1, S2002, STA1 does not feed back ADDBA information to the AP1 in the immediately following frame if the Block Ack Action indicates a J-TXADDBA Request frame or one of the Setup Group ID and the Initiating AP ID exists, and instead, STA1 sends a second ADDBA Request frame to the AP2, which includes a Block session identifier or an identifier of the Block session initiator, and its value is the same as the corresponding parameter in the ADDBA Request frame sent by the AP1 to the STA1 in step S2001.

In some embodiments, the ADDBA Request frame sent by STA1 to AP2 also contains parameters of the same meaning as Category, block Ack Action, dialog Token, block Ack Parameter Set, block Ack Timeout Value, and Block Ack Starting Sequence Control in step S2001, but differs from the ADDBA Request frame sent in step S2001 in that the J-TX Parameter Set does not contain ADDBA Timeout Value.

It should be appreciated that in this ADDBA process, the Setup Group ID or Initiating AP ID contained is set to the same value as the Setup Group ID or Initiating AP ID in the ADDBA Request frame that AP1 initially sent to STA 1.

It should be noted that, when more than three access points are included in the multi-AP network, the AP1 may send access point information (such as the identifier of the access point) that determines to participate in the joint transmission to the STA1, and tell the STA1 which access points participate in the joint transmission, so that the STA1 performs ADDBA negotiation with the access points.

S2003, AP2, after receiving the ADDBA Request frame sent by STA1, sends an ADDBA Response frame to STA1, which includes a Status Code indicating the cause of success or failure, and includes a Setup Group ID or a starting AP ID, the value of which is the same as the corresponding parameter in the ADDBA Request frame sent by STA1 to AP2 in step S2002.

In some embodiments, the ADDBA Response frame sent by AP2 to STA1 includes Block Ack Timeout Value, a-MSDU Supported, block Ack Policy, and Buffer Size, which may be set to the same value or different values from the corresponding parameters in the ADDBA Request frame sent by STA 1.

For example, after receiving the ADDBA Request frame sent by STA1, AP2 makes a decision as to whether to accept the BA negotiation proposed by STA1 according to the parameters indicated therein and the operation parameters supported by itself. When all of the following conditions are satisfied:

the Buffer number which can be provided for the TID by the AP2 is larger than or equal to the available Buffer number indicated by Buffer Size in the ADDBA Request frame, or the available Buffer number indicated by the ADDBA Request frame is larger than the available Buffer number of the AP2, and the difference value of the Buffer number and the available Buffer number is smaller than a third threshold value;

b. the BA timeout threshold indicated by Block Ack Timeout Value in the received ADDBA Request frame may be accepted by AP 2;

c. if the A-MSDU Supported in the received ADDBA Request frame is 1, the AP2 also supports the QoS Data frame to carry the A-MSDU;

d. if the Block Ack Policy in the received ADDBA Request frame is set to 1, the indication Immediate Block Ack is set, and the Block Ack Policy can be accepted by the AP 2;

then, the AP2 selects to accept the BA negotiation parameters proposed by STA1, and sends the first ADDBA Response frame to STA1, where the parameters included therein are as follows:

block Ack Action: optionally, the class of Block Ack frames, the embodiment of the present invention indicates a J-TX ADDBA Response frame, i.e., a frame used for J-TX;

status Code: a status code indicating whether to accept the request;

block Ack Parameter Set: a set of block session parameters;

preferred MCS: alternatively, it may be indicated that the data sender prefers a modulation coding strategy for use in joint transmission;

J-TX Parameter Set: and combining the transmission parameter sets.

Setting Status Code to a first value indicates SUCCESS if AP2 accepts BA negotiation for STA1, and to other values otherwise, and may indicate a reject cause.

Examples of parameters included in Block Ack Parameter Set are as follows:

TID: a traffic identifier indicating the type of data requested, which should be consistent with the TID parameter in the second ADDBA Request frame;

Examples of parameters included in the J-TX Parameter Set are as follows:

setup Group ID: an identification of the ADDBA procedure to which this ADDBA Request frame belongs is indicated.

Or (b)

Initiating AP ID: indicating the identity of the starting initiator of the ADDBA procedure.

If the A-MSDU Supported is set to 1 in the ADDBA Request frame sent by STA1, then AP2 sets the A-MSDU Supported to 1 in this ADDBA Response frame if it accepts to carry the A-MSDU; if the carried A-MSDU is not accepted, or the A-MSDU Supported is set to 0 in the ADDBA Request frame sent by STA1, the A-MSDU Supported is set to 0 in this ADDBASPRESSURE frame.

If in the ADDBA Request frame sent by STA1, block Ack Policy is set to 1, then AP2 sets Block Ack Policy to 1 in this ADDBA Response frame if accepting Immediate Block Ack, i.e. immediately feeding back the BA mode, otherwise sets to 0, indicating a mode supporting delayed feedback BA.

With respect to the settings of Buffer Size and Block Ack Timeout Value, it should be noted that Buffer Size and Block Ack Timeout Value in the addbar request frame sent by STA1 are just one proposed value for AP2 by STA1, and AP2 may set the same or different values based on its own supported operating parameters, which will be the BA parameters successfully negotiated between AP2 and STA 1.

S2004, STA1 receives the ADDBA Response frame sent by AP2, then sends a second ADDBA Response frame to AP1, indicates the result of negotiating with AP2, and simultaneously contains Setup Group ID or Initiating AP ID, the value of which is the same as the corresponding parameters in the ADDBA Request frame or the ADDBA Response frame in the above steps S2001-S2003.

In some embodiments, the ADDBA Response frame sent by STA1 to AP1 includes Block Ack Timeout Value, a-MSDU Supported, block Ack Policy, and Buffer Size, where the values may be set to the same value as the corresponding parameters in the ADDBA Response frame sent by AP2, or may be the values generated by the correlation rule of the parameters corresponding to the ADDBA Response frame sent by AP2 and the corresponding parameters in the ADDBA Request frame sent by AP 1.

Illustratively, the second ADDBA Response frame contains the following parameters:

status Code: a status code indicating whether to accept the request;

block Ack Parameter Set: a set of block session parameters;

J-TX Parameter Set: and combining the transmission parameter sets.

If at least one access point (e.g., AP 2) accepts the BA request from STA1, STA1 sets the Status Code to a first value in the ADDBA Response indicating SUCCESS of the SUCCESS, otherwise sets to other values, and may indicate a reject reason.

Examples of parameters included in Block Ack Parameter Set are as follows:

TID: a traffic identifier indicating the type of data requested, which should be consistent with the TID parameter in the first ADDBA Request frame;

Examples of parameters included in the J-TX Parameter Set are as follows:

Or (b)

The setting of the Supported parameter for the a-MSDU may be to indicate whether AP2 supports carrying the a-MSDU; or, the STA1 may set the a-MSDU Supported in the frame to 1 when the a-MSDU Supported parameter indicated by either AP1 or AP2 is 0, and the STA1 may set the a-MSDU Supported in the frame to 0 when the a-MSDU Supported parameter indicated by either AP1 or AP2 is 1.

The setting of the Block Ack Policy parameter may be to indicate whether AP2 supports Immediate Block Ack; or operation results of whether AP1 and AP2 support Immediate Block Ack may be used.

The setting of the Buffer Size parameter may be to indicate the number of buffers that the AP2 can provide. But may also be the minimum of both the number of buffers that AP2 can provide and the number of buffers that AP1 can provide.

For the setting of Block Timeout Value parameters, it may be a BA timeout threshold value indicating that AP2 is acceptable. Or may be the minimum of the BA timeout threshold values indicating that both AP2 and AP1 are acceptable.

Alternatively, when AP1 does not indicate the Preferred MCS and AP2 indicates the Preferred MCS, STA1 may set the Preferred MCS in the frame to the same value as AP 2; when AP1 indicates a Preferred MCS and AP2 does not indicate a Preferred MCS, STA1 may set the Preferred MCS in the frame to the same value as AP 1; when AP1 indicates a Preferred MCS and AP2 indicates a Preferred MCS, STA1 may set the Preferred MCS in the frame to an MCS indicating a lower order than both AP1 and AP 2.

S2005, after receiving the ADDBA Response frame from the STA1, if the indication is not SUCCESS, the AP1 and the AP2 can not use the BA mode to confirm the data unit receiving condition with the STA 1; accordingly, AP1 and AP2 can only choose to use a general Ack reply mechanism with STA 1. If a SUCCESS is indicated, AP1 will act as a master AP, AP2 receiving the BA request will act as a slave AP, and AP1 and AP2 will perform a unified BA operation in the written joint transmission according to the negotiated BA parameters.

The embodiment of the invention also provides a device for establishing the block session mechanism, which comprises a block session mechanism establishment module, wherein the block session mechanism establishment module is used for executing the following steps:

In an alternative example, it will be understood by those skilled in the art that the above apparatus may be specifically referred to as STA1 or a chip system in STA1 in the above embodiment, and the apparatus may be used to perform each flow and/or step corresponding to AP1 in the above method, which is not repeated herein.

In an alternative example, it will be understood by those skilled in the art that the above apparatus may be specifically referred to as AP1 or a chip system in AP1 in the above embodiment, and the apparatus may be used to perform each flow and/or step corresponding to AP1 in the above method, which is not repeated herein.

It should be understood that the apparatus herein is embodied in the form of functional modules. The term module herein may refer to an application specific integrated circuit (application specific integrated circuit, ASIC), an electronic circuit, a processor (e.g., a shared, dedicated, or group processor, etc.) and memory that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable components that support the described functionality. The device has the function of realizing the corresponding steps in the method; the above functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the functions described above. In an embodiment of the invention, the device may also be a chip or a system of chips, for example: system on chip (SoC). The invention is not limited herein.

The embodiment of the invention also provides an electronic device, and fig. 3 is a schematic structural diagram of the electronic device provided by the embodiment of the invention. As shown in fig. 3, the device 300 comprises a processor 301, a memory 302 and a communication interface 303, wherein the processor 301, the memory 302 and the communication interface 303 are in communication with each other via a bus 304, and instructions executable by the processor 301 are stored in the memory 302, and are loaded and executed by the processor 301 to control the communication interface 303 to send signals and/or receive signals.

It should be understood that the apparatus 300 may be specifically configured as STA1 or AP2 in the foregoing embodiments, or the functions of STA1 or AP2 in the foregoing embodiments may be integrated in the apparatus 300, and the apparatus 300 may be configured to perform the respective steps and/or flows corresponding to STA1 or AP2 in the foregoing embodiments. Alternatively, the memory 302 may include read-only memory and random access memory, and provide instructions and data to the processor 301. A portion of memory 302 may also include non-volatile random access memory. For example, the memory 302 may also store information of the device type. The processor 301 may be configured to execute instructions stored in the memory 301, and when the processor 301 executes the instructions, the processor 301 may perform corresponding steps and/or flows in the above-described method embodiments.

It should be appreciated that in embodiments of the present invention, the processor may be a central processing unit (centralprocessing unit, CPU), the processor may also be other general purpose processors, digital Signal Processors (DSPs), application Specific Integrated Circuits (ASICs), field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or by instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present invention may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in the processor for execution. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor executes instructions in the memory to perform the steps of the method described above in conjunction with its hardware. To avoid repetition, a detailed description is not provided herein.

The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any other combination. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, the processes or functions described in accordance with embodiments of the present invention are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center by wired (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more sets of available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. The semiconductor medium may be a solid state disk.

It should be understood that, in various embodiments of the present invention, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present invention. The modules described as separate components may or may not be physically separate, and components shown as modules may or may not be physical modules, that is, may be located in one place, or may be distributed over a plurality of network modules, where some or all of the modules may be selected according to actual needs to achieve the purposes of the embodiment of the present invention.

In the several embodiments provided by the present invention, it should be understood that the disclosed apparatus, device and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, and for example, the division of the modules is merely a logical function division, and there may be other manners of dividing the modules or components into multiple modules or components when actually implemented, or multiple modules or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or modules, which may be in electrical, mechanical, or other forms.

Those of ordinary skill in the art will appreciate that the various illustrative modules and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method of establishing a block session mechanism, comprising:

2. The method according to claim 1, wherein the first additized block acknowledgment request frame further includes a timeout threshold for indicating that establishment of the block session mechanism is terminated when no additized block acknowledgment response frame is received within the timeout threshold.

3. The method according to claim 1, wherein the first added block acknowledgement request frame, the second added block acknowledgement response frame, and the first added block acknowledgement response frame further indicate a type of frame, and wherein the type of indicated frame in the first added block acknowledgement request frame and the second added block acknowledgement request frame is an added block acknowledgement request frame for joint transmission, and wherein the type of indicated frame in the second added block acknowledgement response frame and the first added block acknowledgement response frame is an added block acknowledgement response frame for joint transmission.

4. A method of establishing a block session mechanism as defined in claim 3, wherein said sending a second add block acknowledgement request frame to a second access point in accordance with said first add block acknowledgement request frame comprises:

5. The method for establishing a block session mechanism according to claim 1, wherein the first added block acknowledgement request frame, the second added block acknowledgement response frame, and the first added block acknowledgement response frame further comprise block session operation information, and wherein transmitting the second added block acknowledgement request frame to the second access point according to the first added block acknowledgement request frame comprises:

6. The method of establishing a block session mechanism of claim 5, wherein transmitting a first add block acknowledgment response frame to the first access point based on the second add block acknowledgment response frame comprises:

7. The method of establishing a block session mechanism of claim 1, further comprising:

receiving a second empty data packet frame sent by a second access point;

8. The method of establishing a block session mechanism of claim 7, further comprising:

Receiving a first empty data packet frame sent by a first access point;

9. A method of establishing a block session mechanism, comprising:

10. The method according to claim 9, wherein the first additized block acknowledgment request frame further includes a timeout threshold for indicating that the establishment of the block session mechanism is terminated when no additized block acknowledgment response frame is received within the timeout threshold.

11. The method according to claim 9, wherein the first additional block acknowledgment request frame and the first additional block acknowledgment response frame further indicate a type of frame, and wherein the type of indicated frame in the first additional block acknowledgment request frame is an additional block acknowledgment request frame for joint transmission, and wherein the type of indicated frame in the first additional block acknowledgment response frame is an additional block acknowledgment response frame for joint transmission.

12. The method of establishing a block session mechanism of claim 9, further comprising:

13. The method of establishing a block session mechanism of claim 12, further comprising:

transmitting a first null data packet announcement frame to the terminal;

14. A method of establishing a block session mechanism as claimed in claim 12 or 13, further comprising:

15. An apparatus for establishing a block session mechanism, comprising a block session mechanism establishment module, wherein the block session mechanism establishment module is configured to perform the following steps:

16. An apparatus for establishing a block session mechanism, comprising a block session mechanism establishment module, wherein the block session mechanism establishment module is configured to perform the following steps:

17. An electronic device comprising a memory, a processor and a computer program stored on the memory, characterized in that the processor executes the computer program to implement the method of any one of claims 1-14.

18. A computer readable storage medium storing a computer program, characterized in that the computer program when executed by a processor implements the method of any one of claims 1-14.