BR-122025010129-A2 - MULTI-BAND COMMUNICATION METHOD, INTERFACE PARAMETER UPDATE, AND RELATED DEVICE

BR122025010129A2BR 122025010129 A2BR122025010129 A2BR 122025010129A2BR-122025010129-A2

Abstract

This application discloses a multi-band communication method, a method for updating interface parameters, and related devices; and belongs to the field of communication technologies. The method includes: in a process where an AP device authenticates a STA device, the AP device sends a target packet to the STA device. The AP device includes a plurality of APs, and the plurality of APs operates on different frequency bands. The target packet includes a plurality of multi-band elements, the plurality of multi-band elements corresponds one-to-one to the plurality of APs, each of the plurality of multi-band elements includes frequency band information of a corresponding AP, and the plurality of multi-band elements instructs the STA device to perform association and key derivation with the plurality of APs. In this application, the STA device can rapidly switch between the plurality of APs.

Inventors

Guogang Huang
Yuchen Guo
Ming Gan
Yunbo Li

Assignees

HUAWEI TECHNOLOGIES CO., LTD.

Dates

Publication Date: 20260317
Application Date: 20201014
Priority Date: 20191122

Claims (6)

1. Multi-link device, ML, CHARACTERIZED in that the ML device comprises a memory and a processor, the memory stores a program used to perform the following operation: update, based on a status change of each of a plurality of network interfaces comprised in the ML device, network interface parameters enabled in the plurality of network interfaces, wherein the parameters comprise at least one of capability information or an operating parameter, the plurality of network interfaces operate in different frequency bands, and the plurality of network interfaces share antennas configured in the ML device.
2. ML device, according to claim 1, CHARACTERIZED in that the memory stores a program used to perform the following operations: after enabling or disabling one of the plurality of network interfaces, configuring parameters of each of all the enabled network interfaces in the plurality of network interfaces, and sending the parameters of all the enabled network interfaces through each of the enabled network interfaces.
3. ML device, according to claim 1 or 2, CHARACTERIZED in that the parameters comprise at least one of a configured number of transmit and receive antennas, a maximum supported number of streams to be sent or received, a parameter indicating whether simultaneous sending and receiving with another network interface is supported, a higher modulation and coding scheme that is allowed to be used by devices at both ends of a link when there is adjacent channel interference on the link, a safety margin that needs to be reserved at one transmit end of the link, channel bandwidth, or transmission power.
4. Chip, CHARACTERIZED by the fact that the chip comprises a processing circuit and an interface circuit, the interface circuit is configured to receive instructions and transmit instructions to the processing circuit, and the processing circuit is configured to perform the following operation: update, based on a status change of each of a plurality of network interfaces comprised in the ML device, network interface parameters enabled in the plurality of network interfaces, wherein the parameters comprise at least one of capability information or an operating parameter, the plurality of network interfaces operate in different frequency bands, and the plurality of network interfaces share antennas configured in the ML device.
5. Chip, according to claim 4, CHARACTERIZED in that the processing circuit is configured to perform the following operations: after enabling or disabling one of the plurality of network interfaces, configuring parameters of each of all the enabled network interfaces in the plurality of network interfaces, and sending the parameters of all the enabled network interfaces through each of the enabled network interfaces.
6. Chip, according to claim 4 or 5, CHARACTERIZED in that the parameters comprise at least one of a configured number of transmit and receive antennas, a maximum supported number of streams to be sent and received, a parameter indicating whether simultaneous sending and receiving with another network interface is supported, a higher modulation and coding scheme that is allowed to be used by devices at both ends of a link when there is adjacent channel interference on the link, a safety margin that needs to be reserved at one transmit end of the link, channel bandwidth, or transmission power.

Description

[0001] This application claims priority to Chinese Patent Application No. 201911159823.8, filed with the National Intellectual Property Administration of China on November 22, 2019, and entitled “MULTI-BAND COMMUNICATION, INTERFACE PARAMETER UPDATE METHOD, AP DEVICE, AND ML DEVICE”, which is incorporated herein by reference in its entirety. TECHNICAL FIELD [0002] This application relates to the field of communication technologies and, in particular, to a multi-band communication method, a method for updating interface parameters and related devices. FUNDAMENTALS [0003] With the development of wireless technologies, more devices support multi-band communication. For example, a device can simultaneously perform communication in a 2.4 GHz (GHz) frequency band, a 5 GHz frequency band, and a 6 GHz frequency band. Even if the number of antennas is limited, a multi-band device can switch between different frequency bands to select an ideal frequency band. This ensures communication quality for the multi-band device. [0004] The multi-band device may be referred to as a multi-link (ML) device. The ML device may perform multi-link aggregation (MLA). Multi-link aggregation means that an ML device uses a plurality of links to send data simultaneously, to improve the transmission rate. SUMMARY [0005] This application provides a multi-band communication method, a method for updating interface parameters and related devices, so that a station (STA) device can quickly switch between a plurality of access points (APs). The technical solutions are as follows. [0006] According to a first aspect, a multi-band communication method is provided. In this method, in a process where an AP device authenticates a STA device, the AP device sends a target packet to the STA device. The AP device includes a plurality of APs, and the plurality of APs operates on different frequency bands. [0007] It should be noted that the fact that the AP device authenticates the STA device means that the AP device performs identity authentication on the STA device at a link layer. Identity authentication typically includes association and key derivation. [0008] In addition, the target packet includes a plurality of multi-band elements, the plurality of multi-band elements corresponds one-to-one to the plurality of APs, each of the plurality of multi-band elements includes frequency band information of a corresponding AP, and the plurality of multi-band elements indicates the STA device to perform association and key derivation with the plurality of APs. [0009] In this embodiment of this application, the AP device may include multiple band elements in the target packet sent to the STA device, in order to send to the STA device information related to the frequency bands in which the multiple APs included in the AP device operate, and to instruct the STA device to perform association and key derivation with the multiple APs. In this way, the STA device can quickly switch between multiple APs. [0010] In one possible implementation, the target packet is an association response frame generated in an association process, and/or the target packet is a key message generated in a key derivation process. [0011] Optionally, when the target packet is the key message generated in the key derivation process, the target packet also includes a robust security network information element, the robust security network information element includes a request type, and the request type includes a single link association type and a corresponding key derivation type, or the request type includes a multi-link association type and a corresponding key derivation type. [0012] It should be noted that the single link association type means that single link association can be performed with the AP device, the multi-link association type means that multi-link association can be performed with the AP device, and the key derivation type indicates a cryptographic protocol that can be used when key derivation is performed with the AP device. [0013] In one possible case, the STA device includes a plurality of STAs, the plurality of STAs operate on different frequency bands, the plurality of STAs have different MAC (Media Access Control) addresses, the plurality of STAs corresponds to a first SAP service access point, and the plurality of APs corresponds to a second SAP service access point. [0014] A join request frame sent by the STA device to the AP device includes a first information element, where the first information element includes a MAC address of the first SAP; or an address field in a frame header of a join request frame sent by the STA device to the AP device includes a MAC address of the first SAP. [0015] An association response frame sent by the AP device to the STA device includes a second information element, wherein the second information element includes a MAC address of the second SAP; or an address field in a frame header of an association response frame sent by the AP dev