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CN-122002601-A - Communication method and device

CN122002601ACN 122002601 ACN122002601 ACN 122002601ACN-122002601-A

Abstract

A communication method and device. The method can support an IEEE protocol, specifically, determines that the transmission of a cell outside a main channel is in a busy state, switches to a secondary channel to communicate with other equipment, and if the period of switching to the secondary channel comprises the starting time of r-TWT SP, determines whether to follow the relevant rule of r-TWT when communicating with other equipment on the secondary channel according to the communication standard or the indication information of an access point. Because the communication standard or the access point definitely prescribes whether the related rule of the r-TWT is required to be complied with on the slave channel, when the non-access point is switched from the master channel to the slave channel to work, the non-access point can execute corresponding operation according to the definitely prescribe, communication confusion possibly caused by the undefined rule of execution is avoided, and the condition that some devices are complied with the related rule of the r-TWT on the slave channel and some devices are not complied with the related rule of the r-TWT on the slave channel is avoided.

Inventors

  • YANG MAO
  • LI BO
  • LI YUNBO

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260508
Application Date
20241108

Claims (20)

  1. 1.A method of communication, the method comprising: determining that the main channel is in a busy state due to the transmission of the cell outside the main channel, and switching to the secondary channel to communicate with other equipment; If the period of switching to the secondary channel comprises a start time defining a target wake-up time r-TWT service phase SP, the relevant rules of r-TWT are complied with when communicating with other devices on the secondary channel.
  2. 2. The method of claim 1, wherein the compliance with r-TWT related rules when communicating with other devices on the slave channel includes at least one of: ending the transmission opportunity before the r-TWT SP start time; it is checked whether there is enough time before the start time of the r-TWT SP to complete the frame interaction and if there is not enough time, the frame interaction is delayed.
  3. 3. The method according to claim 1 or 2, characterized in that the method further comprises: And adhering to a priority transmission rule when the slave channel is communicated with other devices, wherein the priority transmission rule comprises suspending to decrement a back-off counter which does not belong to r-TWT service until the decrementing is recovered when all frames meeting r-TWT service information negotiation in the r-TWT SP are transmitted to be finished, or recovering to decrement when the r-TWT SP is finished.
  4. 4. A method of communication, the method comprising: determining that the main channel is in a busy state due to the transmission of the cell outside the main channel, and switching to the secondary channel to communicate with other equipment; the relevant rules of the r-TWT are not complied with when communicating with other devices on the secondary channel.
  5. 5. The method of claim 4, wherein the non-compliance with r-TWT related rules when communicating with other devices on the slave channel comprises: The period of switching to the secondary channel comprises the start time of the r-TWT service phase SP, the relevant rules of the r-TWT not being complied with when communicating with other devices on the secondary channel.
  6. 6. The method according to claim 4 or 5, wherein the correlation rules for r-TWT are not complied with when communicating with other devices on the slave channel, comprising at least one of: the transmission opportunity does not need to be ended before the r-TWT SP start time; there is no need to check whether there is enough time to complete the frame interaction before the r-TWT SP start time; it is checked whether there is enough time before the start time of the r-TWT SP to complete the frame interaction, without having to delay the frame interaction even if there is not enough time.
  7. 7. The method of claim 4 or 5, wherein the non-compliance with r-TWT related rules when communicating with other devices on the slave channel comprises: And ignoring the relevant rule of the r-TWT when the slave channel communicates with other devices.
  8. 8. The method according to any one of claims 4-7, further comprising: The priority transmission rules are not complied with when the slave channel communicates with other devices, and include suspending decrementing the back-off counter that does not belong to r-TWT traffic until decrementing is resumed at the end of all frames in the r-TWT SP that are in accordance with the negotiation of r-TWT traffic information or resuming decrementing when the r-TWT SP is ended.
  9. 9. A method of communication, the method comprising: generating a first frame comprising first indication information for indicating whether a correlation rule defining a target wake-up time r-TWT is complied with when communicating with other devices on a slave channel; and sending the first frame.
  10. 10. The method of claim 9, wherein the compliance with the r-TWT association rules when communicating with other devices over the slave channel comprises at least one of: ending the transmission opportunity before the start time of the r-TWT service phase SP; it is checked whether there is enough time before the start time of the r-TWT SP to complete the frame interaction and if there is not enough time, the frame interaction is delayed.
  11. 11. The method according to claim 9 or 10, characterized in that the related rules of r-TWT are not complied with when communicating with other devices on the slave channel, comprising at least one of the following: the transmission opportunity does not need to be ended before the r-TWT SP start time; there is no need to check whether there is enough time to complete the frame interaction before the r-TWT SP start time; it is checked whether there is enough time before the start time of the r-TWT SP to complete the frame interaction, without having to delay the frame interaction even if there is not enough time.
  12. 12. The method according to claim 9 or 10, wherein the non-compliance with r-TWT related rules when communicating with other devices on the slave channel comprises: And ignoring the relevant rule of the r-TWT when the slave channel communicates with other devices.
  13. 13. The method according to any one of claims 9-12, wherein the first indication information is validated from a time indicated by the end time of transmission of the first frame to a time indicated by the end time of the next first frame.
  14. 14. The method of any of claims 9-13, wherein the first indication information comprises at least one sub-indication information, each sub-indication information corresponding to an r-TWT for indicating whether a correlation rule of the r-TWT is complied with when communicating with other devices on the slave channel for the corresponding r-TWT.
  15. 15. The method of claim 14, wherein the compliance with r-TWT related rules when communicating with other devices on the slave channel comprises: And when communicating with other devices on the secondary channel, whether the r-TWT corresponding to the sub-indication information complies with the relevant rule of the r-TWT or not.
  16. 16. The method of claim 14 or 15, wherein the sub-indication information carries a traffic information control field in an r-TWT traffic information field.
  17. 17. The method according to any of claims 9-16, wherein the first frame further comprises third indication information indicating whether a priority transmission rule is complied with when communicating with other devices on the slave channel; the priority transmission rule comprises suspending decrementing a back-off counter not belonging to r-TWT service until decrementing is resumed when all frames conforming to r-TWT service information negotiation in r-TWT SP are transmitted, or resuming decrementing when r-TWT SP is ended.
  18. 18. The method according to any of claims 9-17, wherein the first frame is a beacon frame, a probe response frame, an association response frame, or a reassociation response frame.
  19. 19. A method of communication, the method comprising: Receiving a first frame, wherein the first frame comprises first indication information which is used for indicating whether the related rule of defining a target wake-up time r-TWT is complied with when the slave channel is communicated with other devices; and determining whether to comply with the r-TWT related rule when communicating with other devices on the slave channel according to the first indication information.
  20. 20. The method of claim 19, wherein the determining whether to adhere to the association rules of the r-TWT when communicating with other devices on the secondary channel based on the first indication information comprises: And determining whether the transmission of the outer cell is busy, switching to a secondary channel for communication with other equipment, and determining whether the related rule of the r-TWT is complied with when the secondary channel is communicated with other equipment according to the first indication information.

Description

Communication method and device Technical Field The embodiment of the application relates to the technical field of wireless communication, in particular to a communication method and device. Background Increasing throughput is a continuing technical goal of cellular networks and wireless local area networks (wireless local area network, WLAN) to evolve. The protocols of the WLAN system are mainly discussed in the IEEE 802.11 standard group, and throughput rates are continuously improved in the previous standards of 802.11a/b/g/n/ac/ax/be, etc. IEEE 802.11be has increased the maximum available bandwidth of nodes to 320 megahertz (MHz). The available bandwidth of a node may consist of several channels with a bandwidth of 20MHz, e.g. the bandwidth of a node is 160MHz, then the bandwidth consists of 8 channels with a bandwidth of 20 MHz. Of all channels within the available bandwidth, one channel is called a primary channel (PRIMARY CHANNEL, PCH) and the other channels are called secondary channels (secondary channel, SCH). Existing IEEE 802.11 specifies that a node must ensure that a primary channel is idle when the channel is accessed and transmitted, and if the primary channel is busy, then even if there are a large number of secondary channels idle, it is not allowed to perform channel access and transmission through the secondary channels, as shown in fig. 1. This results in wasted resources and thus affects the throughput of the system. For this reason, the industry proposes to switch to the slave channel for communication when the master channel is busy. However, there is no perfect design at present on how the communication device works when switching to communication from the channel, whether or not a specific rule is to be complied with. Disclosure of Invention The embodiment of the application provides a communication method and a device, which are used for defining how to communicate on a slave channel. In a first aspect, embodiments of the present application provide a communication method applied to a communication device, or a communication module/processing module in a communication device, or a circuit or a chip in a communication device that is responsible for a communication function (such as a modem (modem) chip, also called a baseband (baseband) chip, or a system on chip (SoC) chip or a system-in-package (SYSTEMINPACKAGE) SIP chip that includes a modem core), or a circuit or a chip in a communication device that is responsible for a processing function (such as a graphics processor (graphics processing unit, GPU), an artificial intelligence (ARTIFICIAL INTELLIGENCE, AI) processor, or an application-specific integrated circuit (ASIC)). Taking the example that the method is applied to a communication device, in the method, the transmission of a cell outside a main channel is determined to be in a busy state, the main channel is switched to a secondary channel for communication with other equipment, if the period of switching to the secondary channel comprises the starting time of defining a target wake-up time r-TWT service phase SP, and related rules of r-TWT are complied with when the secondary channel is communicated with other equipment. In the method, the relevant rules of the r-TWT are clearly defined and required to be complied with on the slave channel, so that when the communication device is switched from the master channel to the slave channel, the corresponding operation can be executed according to the clear definition, communication confusion possibly caused by undefined execution rules is avoided, and the situations that some communication devices are complied with on the slave channel and some communication devices are not complied with on the slave channel are avoided. In addition, the related rules of r-TWT are observed on the secondary channel, so that the low-delay service can be effectively ensured to be smoothly carried out on the secondary channel, and the influence on the service quality of the low-delay service due to the switching to the secondary channel is avoided. In one possible implementation, the following r-TWT related rules are followed when communicating with other devices on the secondary channel, including at least one of ending the transmission opportunity before the r-TWT SP start time, checking if there is enough time before the r-TWT SP start time to complete the frame interaction, and if there is not enough time to delay the frame interaction. And the transmission opportunity is ended before the r-TWT SP starts, and the frame interaction is delayed if enough time is not available before the r-TWT SP starts, so that the smooth progress of the low-delay service on the secondary channel is guaranteed, and the influence on the service quality of the low-delay service due to the switching to the secondary channel is avoided. In one possible implementation, the method further includes adhering to a priority transmission rule when communicating with other d