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CN-122002617-A - Communication method and communication device

CN122002617ACN 122002617 ACN122002617 ACN 122002617ACN-122002617-A

Abstract

The application provides a communication method and a communication device, which can be applied to WLAN systems supporting the next generation of IEEE 802.11ax Wi-Fi protocols, such as 802.11be, wi-Fi 7 or EHT, and further 802.11 series protocols, such as 802.11be next generation, wi-Fi 8 and the like, and can also be applied to FTTR systems. The method comprises the steps of receiving first information of each device in at least one device, wherein the first information indicates a first duration, the first duration is an expected back-off duration, and executing back-off based on second information of the first device, the second information is determined based on the first information of each device, the second information indicates a second duration, and the second duration is a back-off duration to be adopted. By determining the back-off time information to be adopted by the first device based on the received expected back-off time information corresponding to each device, the probability of collision of transmitted data between the devices can be reduced, and the data transmission delay is reduced.

Inventors

  • LI YANCHUN
  • WU XUMING
  • LI JING
  • QIU HAO

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260508
Application Date
20250522
Priority Date
20241102

Claims (20)

  1. 1. A method of communication, applied to a first device, the method comprising: Receiving first information corresponding to each device in at least one device, wherein the first information indicates a first duration corresponding to each device, and the first duration is an expected duration for carrying out back-off; And executing back-off based on second information corresponding to the first equipment, wherein the second information corresponding to the first equipment is determined based on the first information corresponding to each equipment, the second information indicates a second duration, and the second duration is the duration to be adopted for carrying out back-off.
  2. 2. The method of claim 1, wherein the at least one device comprises a second device, the first duration corresponding to the second device is the same as the first duration corresponding to the first device, or a difference between the first duration corresponding to the second device and the first duration corresponding to the first device is less than a first threshold, the method further comprising: The first time length corresponding to the first equipment is adjusted to be the second time length corresponding to the first equipment, and the second time length corresponding to the first equipment is different from the first time length corresponding to the first equipment.
  3. 3. The method of claim 1, wherein the second duration corresponding to the first device is the first duration corresponding to the first device if the first duration corresponding to each device is different from the first duration corresponding to the first device, or a difference between the first duration corresponding to each device and the first duration corresponding to the first device is greater than or equal to a first threshold.
  4. 4. The method of claim 1, wherein the at least one device comprises a second device, the first duration corresponding to the second device is the same as the first duration corresponding to the first device, or a difference between the first duration corresponding to the second device and the first duration corresponding to the first device is less than a first threshold, the method further comprising: and sending the second information corresponding to the second device, wherein the second information corresponding to the second device indicates that the second device corresponds to the second duration, and the second duration corresponding to the second device is different from the first duration corresponding to the second device.
  5. 5. The method of claim 1, wherein the at least one device comprises a second device and a third device, wherein the first duration corresponding to the second device is the same as the first duration corresponding to the third device, or wherein a difference between the first duration corresponding to the second device and the first duration corresponding to the third device is less than a first threshold, the method further comprising: The second information corresponding to the second equipment is sent to the second equipment, the second duration corresponding to the second equipment is different from the first duration corresponding to the second equipment, and/or, The second information corresponding to the third device is sent to the third device, and the second duration corresponding to the third device is different from the first duration corresponding to the third device; The second duration corresponding to the second device is different from the second duration corresponding to the third device.
  6. 6. The method according to any one of claims 1 to 5, wherein the first information comprises any one of the following information: the first indication information, the expected backoff ending time; the first indication information is used for determining the expected back-off ending time, the first indication information comprises the ending time when a first channel is occupied and a first parameter set, the first channel is used for transmitting data after the back-off, and the first parameter set comprises an arbitration frame gap number and a first random back-off value.
  7. 7. The method according to any one of claims 1 to 6, wherein the second information comprises any one of the following information: Second indication information, the back-off end time to be adopted; the second indication information is used for determining the back-off ending time to be adopted, and the second indication information comprises a second random back-off value.
  8. 8. The method according to any one of claims 1 to 7, further comprising: And receiving third indication information from each device, wherein the third indication information indicates a statistic value of data failure sending of each device in the first time period.
  9. 9. The method of claim 8, wherein the method further comprises: and determining whether to send the second information corresponding to each device based on the magnitude relation between the statistic value of the data sending failure of each device and a second threshold value.
  10. 10. The method according to any one of claims 1 to 9, further comprising: And receiving fourth indication information from each device, wherein the fourth indication information indicates a first time difference between a first time and a second time, the first time is a time or a current time when each device expects to send the first information corresponding to each device, and the second time is an end time when the first channel is occupied or an expected back-off start time.
  11. 11. The method according to claim 10, wherein the method further comprises: And determining whether to send the second information corresponding to each device based on the magnitude relation between the first time difference corresponding to each device and a third threshold value.
  12. 12. A method of communication, for application to a second device, the method comprising: Transmitting first information to first equipment, wherein the first information indicates a first time length corresponding to second equipment, and the first time length is the expected time length for carrying out back-off; receiving second information from the first device, wherein the second information indicates a second duration corresponding to the second device, the second duration is a duration to be adopted for carrying out back-off, and the first duration is different from the second duration; And performing backoff based on the second information.
  13. 13. The method of claim 12, wherein the first information comprises any one of the following information corresponding to the second device: the first indication information, the expected backoff ending time; The first indication information is used for determining the expected backoff ending time, the first indication information comprises the ending time when a first channel is occupied and a first parameter set, the first channel is used for the second device to transmit data after the backoff is performed, and the first parameter set comprises an arbitration frame gap number corresponding to the second device and a first random backoff value.
  14. 14. The method of claim 13, wherein the second information comprises any one of the following information corresponding to the second device: Second indication information, the back-off end time to be adopted; The second indication information is used for determining the back-off ending time to be adopted, and the second indication information comprises a second random back-off value corresponding to the second equipment, wherein the second random back-off value is different from the first random back-off value.
  15. 15. The method according to any one of claims 12 to 14, further comprising: And sending third indication information to the first device, wherein the third indication information indicates a statistic value of data failure sent by the second device in a first time period, and the size relation between the statistic value of data failure sent by the second device and a second threshold value is used for determining whether to send the second information.
  16. 16. The method of any of claims 12 to 15, wherein the sending the first information to the first device comprises: And according to the size relation between the statistic value of the data transmission failure of the second equipment and the second threshold value in the first time period, the first information is transmitted to the first equipment.
  17. 17. The method according to any one of claims 12 to 16, further comprising: And sending fourth indication information to the first device, wherein the fourth indication information indicates a first time difference between a first time and a second time, and the fourth indication information indicates a first time difference between the first time and the second time, the first time is the time or the current time when each device expects to send the first information corresponding to each device, and the second time is the ending time when the first channel is occupied or the expected back-off starting time.
  18. 18. The method of any of claims 12 to 16, wherein the sending the first information to the first device comprises: And determining to transmit the first information to the first device according to the magnitude relation between the first time difference and the third threshold, wherein the first time difference is a time difference between a first time and a second time, the first time is a time or a current time when each device expects to transmit the first information corresponding to each device, and the second time is an end time or an expected back-off start time when the first channel is occupied.
  19. 19. A communication device comprising means for performing the method of any of the preceding claims 1 to 11 or means for performing the method of any of the preceding claims 12 to 18.
  20. 20. A communication device comprising a transceiver for receiving a signal and transmitting the signal to the processor or to other communication devices than the communication device, and a processor for performing the method of any one of claims 1 to 11 or for performing the method of any one of claims 12 to 18.

Description

Communication method and communication device Related cross-reference The present application claims priority from chinese patent application No. 20241956579. X, entitled "communication method and communication device" filed on month 11 and 2 of 2024, the entire contents of which are incorporated herein by reference. Technical Field The present application relates to the field of communications, and more particularly, to a communication method and a communication apparatus. Background With the development of communication technology, optical fiber transmission is increasingly being used in communication systems, where optical fiber to the room (fiber to the room, FTTR) is an important ring in optical networks. The FTTR system comprises a master device (MAIN DEVICE) and a slave device (sub device), wherein the master device and the slave device are connected through optical fibers. The master device is an optical network terminal (optical network terminal, ONT), also called an optical network unit (optical network unit, ONU), in a passive optical network (passive optical network, PON) and is connected to an optical line terminal (optical LINE TERMINAL, OLT) at the operator's office by an optical fiber. In FTTR systems, each device may contend for the channel independently. For example, the back-off, preempting the channel occurs through an enhanced distributed channel access (enhanced distributed CHANNEL ACCESS, EDCA) mechanism, and the data is sent after the preemption of the channel is successful. When one device seizes the channel, other devices can judge busy/idle state of the channel according to the channel interception condition, and can complete back-off and access the channel under the condition that the channel is in idle state. Under the channel access mechanism, the two devices may collide with each other when transmitting the data frame, that is, the channel interception of the two devices cannot timely sense the opening of the data frame transmitted by the other device, so that the data packets of the two devices interfere with each other, the data cannot be transmitted in time, and the data transmission delay is further increased. Therefore, how to reduce the data transmission delay is a problem to be considered. Disclosure of Invention The application provides a communication method and a communication device, which can reduce the probability of air interface collision in the data transmission process, thereby reducing the data transmission time delay. In a first aspect, a communication method is provided, which may be performed by a first device, or by a component of the first device (e.g. a chip or a circuit or a chip system). The following describes an example of execution by the first device. The method comprises the steps of receiving first information corresponding to each device in at least one device, wherein the first information indicates a first duration corresponding to each device, the first duration is expected to be the duration of carrying out back-off, carrying out back-off based on second information corresponding to the first device, the second information corresponding to the first device is determined based on the first information corresponding to each device, and the second information indicates a second duration, and the second duration is to be adopted to carry out back-off. Based on the scheme, the first device can determine the back-off time information to be adopted corresponding to the first device based on the expected back-off time information corresponding to each device in the received at least one device, so that the probability of collision with the data sent by the at least one device when the first device sends the data can be reduced, and the data transmission delay can be reduced. In certain implementations of the first aspect, the at least one device includes a second device, the first duration corresponding to the second device is the same as the first duration corresponding to the first device, or a difference between the first duration corresponding to the second device and the first duration corresponding to the first device is less than a first threshold, the first duration corresponding to the first device is adjusted to the second duration corresponding to the first device, and the second duration corresponding to the first device is different from the first duration corresponding to the first device. In certain implementations of the first aspect, if the first duration corresponding to each device is different from the first duration corresponding to the first device, or a difference between the first duration corresponding to each device and the first duration corresponding to the first device is greater than or equal to a first threshold, the second duration corresponding to the first device is the first duration corresponding to the first device. In certain implementations of the first aspect, the at least one device includes a second device,