CN-122003934-A - Service transmission method and device

Abstract

The application provides a service transmission method and a device, and the technical scheme provided by the application can be applied to a wireless local area network system supporting the next generation Wi-Fi protocol (such as Wi-Fi 8, UHR and llbn) of IEEE 802.1lbe, or Wi-Fi AI, or millimeter wave mmWave, or ultra-bandwidth UWB, or sensing. The service transmission method comprises the steps that a sending station transmits at least one first PPDU by using a first channel and a receiving station, the sending station receives a preempting signal from a preempting station in the process of transmitting the at least one first PPDU, the preempting signal indicates the preempting station to request for service transmission, the sending station continues to transmit the service by using part of channels in the first channel, and a part of channels are reserved for preempting transmission by the preempting station. By the method of the application, the influence on the transmission service of the sending station can be reduced.

Inventors

• GUO YUCHEN
• Evgenni mikhailovych horov
• LI YUNBO
• GAN MING

Assignees

• 华为技术有限公司

Dates

Publication Date

20260508

Application Date

20240926

Priority Date

20231010

Claims (20)

1. A method of communication, the method comprising: The first station transmitting at least one first PPDU with the third station using the first channel; The first station receives first information, wherein the first information is used for indicating a second station to request service transmission; The first station transmits at least one second PPDU with the third station using a second channel, the second channel being part of the first channel.
2. The method of claim 1, wherein the at least one first PPDU comprises first indication information indicating at least one of: The transmission period of the at least one first PPDU, the length of the at least one first PPDU, the period of transmitting or receiving the first information, and the time interval of transmitting or receiving the first information.
3. The method of claim 1 or 2, wherein when the number of the at least one first PPDU and the number of the at least one second PPDU are 1, there is a first time interval between the first PPDU and the second PPDU, the first station receiving first information, comprising: the first station receives the first information at the first time interval.
4. The method of claim 1 or 2, wherein when the number of the at least one first PPDUs or the number of the at least one second PPDUs is greater than 1, there is a first time interval between a last first PPDU of the at least one first PPDUs and a first second PPDU of the at least one second PPDUs, the first station receiving first information, comprising: the first station receives the first information at the first time interval.
5. The method of claim 3 or 4, wherein the first time interval further comprises a second time for the first station to switch from a transmitting state to a receiving state and a third time for the first station to switch from a receiving state to a transmitting state, the first station receiving the first information at the first time interval comprising: The first station receives the first information at a time interval other than the second time and the third time in the first time interval.
6. The method of any of claims 1-5, wherein the first station receiving the first information comprises: The first station receiving the first information on a fourth channel, the fourth channel being part of the first channel; The method further comprises the steps of: the first station determines the channel other than the fourth channel in the first channels as the second channel.
7. The method of claim 6, wherein the fourth channel is in a high band portion of the first channel, or the fourth channel is in a low band portion of the first channel, or the fourth channel has a bandwidth less than or equal to half the bandwidth of the first channel.
8. The method of any of claims 1 to 5, wherein the first station receives the first information when the primary channel of the first station is the same as the primary channel of the second station, comprising: the first station receives the first information on the main channel; The method further comprises the steps of: The first station transmits second information, wherein the second information is used for indicating to switch the main channel of the first station, and the second channel comprises the main channel of the first station after switching.
9. The method of claim 8, wherein the second information is further used to indicate a primary channel of the first station after the handoff.
10. The method according to any one of claims 1 to 9, wherein the at least one second PPDU comprises second indication information for indicating the second channel.
11. The method of any of claims 1 to 10, wherein the first information is further for indicating that the second station requests use of a third channel, the third channel being part of the first channel.
12. The method of claim 11, wherein the third channel is predefined from the first channel.
13. The method of claim 11, wherein the at least one first PPDU comprises third indication information indicating a third channel for the second station to transmit at least one third PPDU.
14. The method of claim 11, wherein the method further comprises: The first station sends fourth information to the second station, wherein the fourth information is used for indicating configuration information of the third channel.
15. The method of claim 14, wherein the method further comprises: The first station receives third information, where the third information is used to request configuration information of the third channel.
16. A method of communication, the method comprising: The second station sends first information to the first station, wherein the first information is used for indicating the second station to request service transmission; The second station transmits at least one third PPDU using a third channel, the third channel being part of a first channel, the first channel being used by the first station to transmit at least one first PPDU with the third station.
17. The method of claim 16, wherein the at least one first PPDU comprises first indication information indicating at least one of: The transmission period of the at least one first PPDU, the length of the at least one first PPDU, the period of transmitting or receiving the first information, and the time interval of transmitting or receiving the first information.
18. The method of claim 16 or 17, wherein the second station transmitting the first information to the first station comprises: The second station transmits the first information at a first time interval, When the number of the at least one first PPDU and the number of the at least one second PPDU are 1, the first time interval is a time interval between the first PPDU and the second PPDU, the second PPDU is a PPDU transmitted by the first station and the third station on a second channel, and the second channel is a part of the first channel.
19. The method of claim 16 or 17, wherein the second station transmitting the first information to the first station comprises: The second station transmits the first information at a first time interval, When the number of the at least one first PPDU or the number of the at least one second PPDU is greater than 1, the first time interval is a time interval between a last first PPDU of the at least one first PPDU and a first second PPDU of the at least one second PPDU, the at least one second PPDU being a PPDU transmitted by the first station and the third station on a second channel, the second channel being a part of the first channel.
20. The method of claim 18 or 19, wherein the second station transmitting the first information at the first time interval comprises: The second station transmits the first information at intervals of the first time interval except for a second time for the first station to switch from a transmitting state to a receiving state and a third time for the first station to switch from the receiving state to the transmitting state.

Description

Service transmission method and device The application claims priority from russian patent application filed 10/2023, russian national intellectual property office, application number 2023125825, application name "service delivery method and apparatus", the entire contents of which are incorporated herein by reference. Technical Field The present application relates to the field of communications technologies, and in particular, to a service transmission method and apparatus. Background Low latency is an important research goal of current traffic transmission, in particular, real-time traffic (real time application, RAT) is more stringent for low latency transmission, even with ultra low latency of less than a few milliseconds and ultra high reliability (ultra high reliability, UHR) requirements. To ensure low latency transmission of RATs, a preemption (preemption) technique is currently introduced. The transmission station interrupts the transmission of the current PPDU and allows the transmission of the service data packet with the ultra-low delay requirement by other stations, or interrupts the transmission of the service data packet with the non-low delay after the transmission of the current PPDU is completed by the transmission station and allows the transmission of the service data packet with the ultra-low delay requirement by other stations by the channel. Therefore, the preemption of the transmitting station by other stations may cause interruption of the transmission of the transmitting station, which may have a certain influence on the original transmission. Disclosure of Invention The application provides a service transmission method and a service transmission device, which can reduce the influence on the original transmission of a sending station. In a first aspect, a service transmission method is provided, where the method may be performed by a first site, or may also be performed by a module (e.g. a chip or a circuit) in the first site, or may also be performed by a logic node, a logic module, or software that can implement all or part of the functions of the first site, where the application is not limited in this regard. The method includes a first station transmitting at least one first PPDU with a third station using a first channel, the first station receiving first information indicating that a second station requests traffic transmission, the first station transmitting at least one second PPDU with the third station using a second channel, the second channel being part of the first channel. Specifically, the term "the second channel is a part of the first channel" is understood to mean that the second channel is a partial channel of the first channel, or that the bandwidth of the second channel is a part of the bandwidth of the first channel, or that the frequency domain resource corresponding to the second channel is a part of the frequency domain resource corresponding to the first channel, or that the frequency domain range corresponding to the second channel is included in the frequency domain range corresponding to the first channel, or that the second channel is a subchannel of the first channel, or the like. Specifically, the at least one second PPDU may be a PPDU belonging to the same service as the at least one first PPDU, and the at least one second PPDU may be a PPDU of a new service. Specifically, the first information may be a preemption signal. When the service transmission of the sending station is preempted, the continuous transmission of the original service is maintained by reducing the transmission channel of the original service, so that the influence on the original transmission can be reduced. Specifically, the at least one first PPDU includes first indication information for indicating at least one of the following information: A transmission period of the at least one first PPDU, a length of the at least one first PPDU, a period of transmitting or receiving the first information, and a time interval of transmitting or receiving the first information. The time interval can also be understood as a time window. With reference to the first aspect, in certain implementation manners of the first aspect, when the number of the at least one first PPDU and the number of the at least one second PPDU are 1, a first time interval exists between one first PPDU and one second PPDU, and the first station receives the first information includes the first station receiving the first information in the first time interval. The first time interval may be a preemption opportunity (preemption opportunity, PROP). The transmitting station (i.e., the first station) receives the preemption signal using a time interval between the transmitted PPDUs and the preempting station (i.e., the second station) transmits the preemption signal using a time interval between the PPDUs transmitted by the transmitting station such that the transmitting station can detect the preemption signal. With