Huawei Technologies Co., Limited

Yuchen Guo

Yunbo Li

Ming Gan

Jian Yu

Xun Yang

Guogang Huang

Yiqing Li

Dandan Liang

Meilu Lin

Yifan Zhou

Xiao Han

Mengshi Hu

Mao Yang

Bo Li

Yanchun Li

Chenchen Liu

Peter Loc

Yun Liu

Peng Liu

Sheng Liu

Le Liu

Mingjie Dong

Jia Ya Jia

Xun Zhou

Zhaoxia Liu

Ying Wang

Zezhou Luo

Mengyao Ma

Zhongjiang Yan

Qian Zhang

Weimin Wu

Yuxin Lu

Roberto Riggio

Chenyu Huang

Jinzhe Pan

Embodiments of this application provide a communication method between multi-link devices and an apparatus, and relate to the field of communications technologies, to reduce power consumption of a station multi-link device. The method includes: a multi-link device includes a plurality of STAs, one STA operates on one of a plurality of links, and the STA determines a primary link in the plurality of links. A STA operating on the primary link in the multi-link device may receive information sent by the AP indicating whether the STA operating on the primary link has a downlink traffic, and/or information indicating whether a STA operating on a link other than the primary link has a downlink traffic. Therefore, the STA operating on the primary link may determine a link on which the STA having a downlink traffic operates in the multi-link device.

Communication method between multi-link devices and apparatus

This application provides data transmission methods and apparatuses, to introduce a buffer status report (BSR) mechanism through multi-link (ML) cooperation, to improve performance of scheduling a station by an ML device. In an example method, a multi-link transmit end determines BSR signaling sent to a multi-link receive end, where the BSR signaling can enable the multi-link receive end to schedule a station of the multi-link transmit end over one or more links. Further, the multi-link transmit end sends the B SR signaling to the multi-link transmit end over the one or more links. This introduces a BSR mechanism through ML cooperation.

Data transmission method, data transmission apparatus and non-transitory computer-readable storage medium for tid-to-link mapping

A link reachability determining method to enable a multi-link device to determine whether a link is reachable in an uplink direction, includes: a multi-link STA receives a first frame sent by a multi-link AP on a first link, where the first frame includes transmit power and antenna gain information of each AP of the multi-link AP; and then, the multi-link STA determines, based on the first frame, whether each of M links supported by the multi-link STA is reachable in an uplink direction.

Link reachability determining method and apparatus

This application relates to the wireless communication field, and in particular, to critical basic service set (BSS) parameter management method applicable to multiple links and a related apparatus that are applied to, for example, a wireless local area network supporting the 802.11be standard. A first access point (AP) in a first access point multi-link device (AP MLD) generates and sends a first frame, where the first frame indicates critical BSS parameter update count values corresponding to a plurality of APs in the first AP MLD and critical BSS parameter update count values corresponding to a plurality of APs in a second AP MLD, and the second AP MLD is an AP MLD to which a nontransmitted AP belongs in a multiple basic service set identifier (BSSID) set including the first AP.

Critical BSS parameter management method applicable to multiple link and related apparatus

This application discloses methods and apparatuses applicable to multiple links, for example, in a wireless local area network supporting an 802.11be standard. In an example, a first station (STA) of a first non-access-point multi-link device (non-AP MLD) receives individually addressed traffic indication information that indicates whether the first non-AP MLD associated with a first access point multi-link device (AP MLD) has a downlink individually addressed traffic and whether a second non-AP MLD associated with a second AP MLD has a downlink individually addressed traffic. The second AP MLD is an AP MLD to which a non-transmitted AP belongs, and the non-transmitted AP is in a multiple basic service set identifier (BSSID) set in which the first AP is located. The first STA determines whether the first non-AP MLD has a downlink individually addressed traffic according to the individually addressed traffic indication information.

Individually addressed traffic indication method applicable to multiple links and related apparatus

Embodiments provide a multi-link communication method and a related apparatus. A first station generates a radio frame, where the first station is one of a plurality of stations included in a first multi-link device. The first multi-link device includes a first station operating on a first link and a second station operating on a second link. The first station transmits the radio frame on the first link, where the radio frame includes capability indication information, and the capability indication information indicates whether the first station and the second station support simultaneous transmitting/receiving operations. According to the embodiments of this application, communication quality can be ensured.

Multi-link communication method and related apparatus

Example channel access methods and apparatus are described. One example method includes performing first channel contention by a multi-link device on a first link, where an initial value of a backoff counter in the first channel contention is determined based on a first value of a contention window. The multi-link device may perform second channel contention on the first link when a value of the backoff counter becomes 0 in the first channel contention and when the multi-link device does not perform transmission on the first link. An initial value of the backoff counter in the second channel contention is determined based on a second value of the contention window, and the second value is equal to the first value or a minimum value of the contention window.

Channel access method for multi-link device, and related apparatus

A channel contention method includes performing, by a first station and a second station of a multi-link device (MLD), channel contention based on a first enhanced distributed channel access (EDCA) parameter; generating, by the first station and the second station, a point coordination function (PCF) inter-frame space (PIFS) access t imer when the first station performs EDCA access and the second station performs PIFS access; and performing, by the first station and the second station, channel contention based on a second EDCA parameter before the PIFS access timer backs off to 0.

Channel contention method and related apparatus

A method for determining a receiving status of a data frame and a first multi-link device. The method includes sending data frames to a second multi-link device over multiple links; receiving, over a first link in the multiple links, a block acknowledgment (BA) frame, where a bitmap in the BA frame indicates a receiving status of a data frame transmitted over the first link and indicates a receiving status of a data frame transmitted over a second link in the multiple links, and determining, based on a first time and a second time, a receiving status of a data frame corresponding to a first bit.

Method for determining receiving status of data frame and communication apparatus

This disclosure provides methods for modifying a block acknowledgment (BA) protocol parameter. One example method includes a first device that receives a multi-traffic identifier (multi-TID) BA setup request frame comprising multiple pieces of BA protocol identification information from a second device, where the multi-TID BA setup request frame is used to set up parameter information of multiple BA protocols identified by the multiple pieces of BA protocol identification information. The first device sends a multi-TID BA setup response frame to the second device, where the multi-TID BA setup response frame is used to respond to the multi-TID BA setup request frame.

Method for modifying BA protocol parameter and device

A method includes receiving quality of service requirement information including packet loss rate indication information. The packet loss rate indication information includes an index value and a reference number of service data packets. The reference number of service data packets indicates a reference measurement number for counting the packet loss rate. The index value includes one or more characters. The index value corresponds to an index item in a database. The index item in the database has a mapping relationship with an acceptable maximum packet loss rate in the database. The acceptable maximum packet loss rate includes two or more characters. A quantity of the one or more characters included in the index value is less than a quantity of the two or more characters included in the acceptable maximum packet loss rate. The method also includes determining quality of service requirement based on the quality of service requirement information.

Communication method and apparatus

This application discloses a multi-link device probing method and a communication apparatus, which may be applied to a wireless local area network supporting the 802.11 be standard. The method includes: A station (STA) multi-link device generates a probe request frame, where the probe request frame carries first indication information used to indicate a first access appoint (AP) working on a first link in an AP multi-link device to feed back communication information of an AP that works on a second link and that is in the AP multi-link device, the communication information is used by the STA multi-link device to perform multi-link communication with the AP multi-link device, the second link is different from a first link; and the STA multi-link device sends the probe request frame on the first link.

Multi-link device probing method and communication apparatus

This application provides a communication method and an apparatus, and relates to the field of communications technologies, to reduce a phenomenon that an acknowledge rule is violated in some scenarios. The method includes: After a receive device receives a first data unit from a transmit device through a first link, the receive device sends receiving status information of the first data unit to the transmit device through the first link, unless the first data unit meets any one of a first preset condition. The first preset condition includes: Correctly received information of the first data unit is fed back through another link, or an acknowledge policy corresponding to the first data unit is no acknowledge. The communication method in embodiments of this application is applied to a multi-link data transmission process.

A non-AP MLD or a first STA in the non-AP MLD generates a first frame. The first frame includes indication information for indicating padding duration for a channel switch delay in an initial control frame. The padding duration is determined based on duration of a control response frame. The non-AP MLD or the first STA or another STA in the non-AP MLD transmits the first frame. An AP MLD or a first AP or another AP in the AP MLD receives the first frame. The AP MLD or the first AP determines the padding duration of the initial control frame based on the indication information.

Information indication method and communication apparatus

In an information transmission method, a sending device sends a data frame to a receiving device. The data frame occupies a transmission resource block, a bandwidth occupied by the transmission resource block is greater than 160 MHz, and the data frame comprises resource unit RU allocation information. The sending device determines indication information based on a resource block size indicated by the RU allocation information and a location of a 160 MHz channel within the bandwidth occupied by the transmission resource block, with the 160 MHz channel having more data tones in the transmission resource block. The sending device determines a response resource block based on the indication information and the RU allocation information, and then receives an acknowledgment frame for the data frame from the receiving device on the response resource block.

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Shenzhen, China

Yuchen Guo