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Unicast service indication method suitable for multiple links and related device

A service indication, multi-link technology, applied in electrical components, wireless communication, network topology, etc., can solve the problem of unable to receive downlink unicast services correctly, and achieve the effect of assisting correct reception

Pending Publication Date: 2022-02-18
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, some special access point multi-link devices (for example, all access points (access points, APs) included in the access point multi-link device have a Basic Service Set identifier (BSSID) of non- Transmitting (Non-transmitted) BSSID AP), cannot indicate whether the associated station (station, STA) multi-link device has downlink unicast service by sending a beacon frame, resulting in the associated station multi-link device cannot The downlink unicast service is correctly received

Method used

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  • Unicast service indication method suitable for multiple links and related device
  • Unicast service indication method suitable for multiple links and related device
  • Unicast service indication method suitable for multiple links and related device

Examples

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Embodiment 1

[0156] see Figure 6 , Figure 6 It is a schematic flowchart of a multi-link unicast service indication method provided by an embodiment of the present application. The unicast service indication method applicable to multiple links is described by taking the implementation in a communication system composed of AP MLD and Non-AP MLD as an example. Wherein, the AP MLD includes one or more APs, the first AP is any reporting AP in the AP MLD, and optionally, the reporting AP is not a non-transmitting AP in the multi-BSSID set. The Non-AP MLD includes one or more STAs, and the first STA is any STA in the Non-AP MLD. As mentioned above, the AP MLD may establish a multi-link association with the Non-AP MLD, and both the first AP and the first STA work on the first link. Such as Figure 6 As shown, the unicast service indication method suitable for multi-link includes but not limited to the following steps:

[0157] S101, the first AP of the first AP MLD generates unicast service...

Embodiment 2

[0194] Embodiment 2 of the present application introduces an AID allocation method for a multi-link device, specifically, an AID allocation method for a Non-AP MLD.

[0195] Understandably, the AID is an identifier (identify, ID) assigned by the AP to the associated STA after association, and can be regarded as the ID of the associated STA. The AID can be used to identify and distinguish each STA associated to the AP, and can be used as an index in a partial frame structure to point to a specific associated STA. If the AP can support multiple BSSIDs, or the beacon frame or probe response frame can carry multiple BSSID elements (multiple BSSID element), the maximum number of BSSIDs that the AP can support is 2 n , indicating that the range of BSSID is [1, 2 n -1], the AID range that the AP can assign to the STA is [2 n , 2007]. Wherein, n may be the value of the maximum BSSID indication (max BSSID indicator) field of the BSSID element. If the AP cannot support multiple BSSI...

Embodiment 3

[0235] Embodiment 3 of the present application solves the problem that some APs in the APMLD cannot indicate whether the associated Non-AP MLD has downlink unicast services by limiting the link where the Non-AP MLD listens to the downlink unicast service indication. In addition, at this time, other APs in the AP MLD that work on the same link as some of the above APs do not help some of the above APs to send downlink unicast service indications. For example, with Figure 5 For example, if AP1x is the reporting AP, assuming that Non-AP MLD1 is associated with AP2y and AP3 of AP MLD1, if Non-AP MLD1 only monitors whether there is a downlink unicast service indication on link 2, then AP2y in AP MLD1 (Non-transmitting APs in the multi-BSSID set) cannot send downlink service instructions. In addition, the transmitting APs in the same multi-BSSID set on the same link do not help to send the downlink service instructions of the MLD where AP2y is located, then on link 2 The listening...

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Abstract

The invention relates to the field of wireless communication, in particular to a unicast service indication method suitable for multiple links and a related device, for example, the unicast service indication method and the related device are applied to a wireless local area network supporting the 802.11 be standard. The method comprises: a first AP of a first AP MLD generates and sends unicast service indication information for indicating whether a Non-AP MLD associated with the first AP MLD has a downlink unicast service and whether a Non-AP MLD associated with a second AP MLD has a downlink unicast service, and the second AP MLD is an AP MLD to which a non-transmission AP belongs in a multi-BSSID set where the first AP is located. Therefore, some APs or all APs in a part of AP MLDs can be helped to indicate whether the site multi-link equipment associated with the APs has the downlink unicast service or not so as to assist the site multi-link equipment to correctly receive the downlink unicast service.

Description

technical field [0001] The present application relates to the technical field of wireless communication, in particular to a multi-link unicast service indication method and a related device. Background technique [0002] In order to significantly increase the service transmission rate of a wireless local area network (WLAN) system, the Institute of Electrical and Electronics Engineers (IEEE, Institute of Electrical and Electronics Engineers) 802.11ax standard is implemented in the existing Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency On the basis of DivisionMultiplexing) technology, Orthogonal Frequency Division Multiple Access (OFDMA, Orthogonal Frequency Division Multiple Access) technology is further adopted. OFDMA technology supports multiple nodes to transmit and receive data simultaneously, thereby achieving multi-site diversity gain. [0003] The next-generation WiFi standard IEEE 802.11be is called extremely high throughput (EHT) or Wi-Fi 7...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/02H04W84/12
CPCH04W24/02H04W84/12H04W72/23H04W8/26H04W88/06Y02D30/70H04W76/15H04W28/0252H04W28/0215H04W28/14H04W52/0216H04W36/0077H04W74/006
Inventor 淦明李伊青刘辰辰于健狐梦实李云波郭宇宸
Owner HUAWEI TECH CO LTD