CN-121985383-A - Method and apparatus for updating parameters in a communication system supporting multiple links

CN121985383ACN 121985383 ACN121985383 ACN 121985383ACN-121985383-A

Abstract

The present invention relates to a method and apparatus for updating parameters in a communication system supporting multiple links. Methods and apparatus for updating parameters in a communication system supporting multiple links are disclosed. The method of operation for a first device includes the steps of transmitting a first frame to a second device over a first link of the multiple links, the first frame including updated parameters for communication operations in the first link, transmitting a second frame to the second device over a second link of the multiple links, the second frame including information indicating that the updated parameters exist, and transmitting a third frame to the second device over one link of the multiple links, the third frame including the updated parameters.

Inventors

JIN LONGHAO
Hong Hanse

Assignees

现代自动车株式会社
起亚株式会社
韩国交通大学校产学协力团

Dates

Publication Date: 20260505
Application Date: 20210325
Priority Date: 20200330

Claims (15)

1. A method in a wireless local area network for operating an access point multilink device, the method comprising: Transmitting a first beacon frame on a first link of the multiple links, the first beacon frame including updated at least one parameter for communication operations in the first link; transmitting a second beacon frame to the non-access point multilink device on a second link of the multilink, the second beacon frame including at least one of first information indicating that at least one parameter is updated or second information including a count value for the at least one parameter; A probe response frame including at least one parameter is transmitted to a non-access point multilink device.
2. The method of claim 1, further comprising: A probe request frame is received from a non-access point multilink device.
3. The method of claim 1, wherein, The access point multilink device includes a first access point and a second access point associated with the access point multilink device, The first access point operates on a first link, The second access point operates on a second link, The non-access point multilink device includes a first station and a second station associated with the non-access point multilink device, The first station operates on a first link, The second station operates on a second link.
4. The method of claim 1, wherein the first beacon frame is transmitted to a plurality of devices including a non-access point multilink device on a broadcast basis.
5. The method of claim 1, wherein the probe response frame is transmitted to a plurality of devices including a non-access point multilink device on a broadcast or unicast basis.
6. The method of claim 1, wherein the first beacon frame is not received in the non-access point multi-link device when the non-access point multi-link device does not support simultaneous transmit and receive operations in the multi-link and transmits frames in the second link during a receive period of the first beacon frame in the first link.
7. The method of claim 1, wherein the first beacon frame and the second beacon frame are transmitted periodically and the third frame is transmitted upon request of a periodic or non-access point multilink device or another device.
8. The method of claim 1, wherein to receive the probe response frame in the non-access point multilink device, transmission is prohibited during a period in which the third frame is transmitted on a link other than the link on which the third frame is transmitted.
9. A method in a wireless local area network for operating a non-access point multilink device, the method comprising: receiving a beacon frame from an access point multilink device on a second link of the multilink, the beacon frame including at least one of first information indicating that at least one parameter for communication operation in the first link of the multilink is updated or second information including a count value for the at least one parameter; Identifying that at least one parameter is updated based on the first information and the second information; a probe response frame including at least one parameter is received from an access point multilink device.
10. The method of claim 9, further comprising: A probe request frame is sent to an access point multilink device.
11. The method of claim 9, wherein, The access point multilink device includes a first access point and a second access point associated with the access point multilink device, The first access point operates on a first link, The second access point operates on a second link, The non-access point multilink device includes a first station and a second station associated with the non-access point multilink device, The first station operates on a first link, The second station operates on a second link.
12. The method of claim 9, wherein the first beacon frame is transmitted periodically and the second beacon frame is transmitted upon request of a periodic or non-access point multilink device or other device.
13. The method of claim 9, wherein to ensure that the second beacon frame is received in the non-access point multilink device, transmission is disabled during periods when the second beacon frame is transmitted on links other than the link on which the second beacon frame is transmitted.
14. The method of claim 9, further comprising: Performing a channel access operation for transmission of the probe request frame; if the channel access operation is completed, transmission of the probe request frame is delayed to receive the second beacon frame.
15. An access point multilink device in a wireless local area network, the access point multilink device comprising: At least one transceiver; at least one processor, and At least one computer memory operably connected to the at least one processor and storing instructions that, upon execution by the at least one processor, perform operations comprising: Transmitting a first beacon frame on a first link of the multiple links, the first beacon frame including updated at least one parameter for communication operations in the first link; transmitting a second beacon frame to the non-access point multilink device on a second link of the multilink, the second beacon frame including at least one of first information indicating that at least one parameter is updated or second information including a count value for the at least one parameter; A probe response frame including at least one parameter is transmitted to a non-access point multilink device.

Description

Method and apparatus for updating parameters in a communication system supporting multiple links The application relates to a method and a device for updating parameters in a communication system supporting multiple links, which are divided application of China PCT patent application with the application number 202180026680.2 and the application date 2021 and the application date 3 and 25. Technical Field The present invention relates to a wireless local area network (Wireless Local Area Network) communication technology, and more particularly to a technology for updating parameters in a wireless local area network supporting multiple links. Background Recently, as the distribution of mobile devices expands, wireless local area network technology capable of providing a rapid wireless communication service to mobile devices has been attracting attention. Wireless local area network (Wireless Local Area Network) technology may be one technology that supports wireless access to the internet by mobile devices, such as smartphones, laptops, portable multimedia players, embedded devices, etc., based on wireless communication technology. Standards utilizing wireless lan technology are standardized as IEEE 802.11 standards mainly in the Institute of Electrical and Electronics Engineers (IEEE) of ELECTRICAL AND Electronics Engineers. An initial version of the IEEE 802.11 standard may support a communication speed of 1 to 2 megabits per second (Mbps). Later versions of the IEEE 802.11 standard are being standardized in the direction of increasing communication speeds. A revised version of the IEEE 802.11a standard may utilize an orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) scheme in the 5 gigahertz (GHz) band to support communication speeds up to 54 Mbps. The IEEE 802.11b standard supports communication speeds up to 11 Mbps using a direct sequence spread spectrum (Direct Sequence Spread Spectrum, DSSS) scheme in the original version of the 2.4 Ghz band. Due to the demand for higher speeds, the IEEE 802.11n standard supporting High Throughput (HT) wireless local area network technology has been developed. The IEEE 802.11n standard may support an OFDM scheme. By supporting the channel bandwidth extension technology and the multiple input multiple output (Multiple Input Multiple Output, MIMO) technology in the IEEE 802.11n standard, the maximum communication speed in the 2.4 Ghz band and the 5 GHz band can be improved. For example, the IEEE 802.11n standard may support communication speeds up to 600 Mbps by utilizing 4 spatial streams and 40 MHz bandwidths. With the development and popularization of the above-described wireless lan technology, applications using the wireless lan technology have been diversified, and a demand for wireless lan technology supporting higher throughput has arisen. Accordingly, the frequency bandwidth (e.g., "maximum 160 MHz bandwidth" or "80+80 MHz bandwidth") utilized in the IEEE 802.11ac standard has been extended, and the number of supported spatial streams has also been increased. The IEEE 802.11ac standard may be a very high throughput (Very High Throughput, VHT) wireless local area network technology that supports high throughput of 1 gigabit per second (Gbps) or higher. The IEEE 802.11ac standard may support downlink transmission of a plurality of stations by using MIMO technology. As the demand for wireless local area network technology has increased further, the IEEE 802.11ax standard has been developed to improve frequency efficiency in dense environments. In the IEEE 802.11ax standard, a Multi-User (MU) orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA) technique may be utilized to perform the communication procedure. In the IEEE 802.11ax standard, uplink communication may be performed using MU MIMO technology and/or OFDMA technology. With the advent of applications requiring higher throughput and applications requiring real-time transmission, the IEEE 802.11be standard, an ultra high throughput (Extreme High Throughput, EHT) wireless local area network technology, is being developed. The IEEE 802.11be standard may be targeted to support a high throughput of 30 Gbps. The IEEE 802.11be standard may support techniques for reducing transmission delay. Furthermore, the IEEE 802.11be standard may support a more extended frequency bandwidth (e.g., 320 MHz bandwidth), multi-link transmission, and an aggregation operation including multi-band operation, multi-Access Point (AP) transmission operation, and/or efficient retransmission operation (e.g., hybrid automatic repeat request (Hybrid Automatic Repeat Request, HARQ) operation). However, since the multilink operation is an operation which is not defined in the existing wireless lan standard, it may be necessary to define a detailed operation according to an environment in which the multilink operation is performed. In particular, when two