Service transmission method and apparatus
This application provides a service transmission method and an apparatus. Service queues of a first communication apparatus contend for a channel. A service queue obtains the channel through contention to obtain a data transmission opportunity. The first communication apparatus transmits data of a highest-priority service queue of the first communication apparatus in a time window corresponding to the transmission opportunity. According to the technical solutions provided in this application, the data of the highest-priority service queue can be preferably transmitted, to reduce waiting time of the highest-priority service queue to and reduce service latency.
1 . A service transmission method, comprising:
obtaining a channel through contention, by a non-highest-priority service queue of a communication apparatus, and obtaining, by the non-highest-priority service queue, a transmission opportunity; and
when there is to-be-transmitted data in a highest-priority service queue, interrupting, by the communication apparatus, a data transmission process of the non-highest-priority service queue, and transmitting, by the communication apparatus, data of the highest-priority service queue in a time window corresponding to the transmission opportunity;
wherein interrupting the data transmission of the non-highest-priority service queue, and transmitting the data of the highest-priority service queue comprises;
interrupting a process of sending a physical layer protocol data unit (PPDU) data frame of the non-highest-priority service queue, when the communication apparatus is in a phase of sending the PPDU data frame of the non-highest-priority service queue, and adding a PPDU terminator at an interrupted position of the PPDU data frame, wherein the PPDU terminator indicates to end the data transmission process of the non-highest-priority service queue and to transmit the data of the highest-priority service queue.
2 . The method according to claim 1 , further comprising contending, by the non-highest-priority service queue, for another channel.
3 . A service transmission method, comprising:
transmitting, by a communication apparatus, including a highest-priority service queue and a non-highest-priority service queue, data of the non-highest-priority service queue in a data transmission process of the non-highest-priority service queue, and when there is to-be-transmitted data in the highest-priority service queue, interrupting, by the communication apparatus, the data transmission process of the non-highest-priority service queue; and
transmitting, by the communication apparatus, the data of the highest-priority service queue;
wherein interrupting the data transmission of the non-highest-priority service queue, and transmitting the data of the highest-priority service queue comprises:
interrupting a process of sending a physical layer protocol data unit (PPDU) data frame of the non-highest-priority service queue, when the communication apparatus is in a phase of sending the PPDU data frame of the non-highest-priority service queue, and adding a PPDU terminator at an interrupted position of the PPDU data frame, wherein the PPDU terminator indicates to end the data transmission process of the non-highest-priority service queue and to transmit the data of the highest-priority service queue.
4 . The method according to claim 3 , wherein interrupting the data transmission of the non-highest-priority service queue, and transmitting the data of the highest-priority service queue further comprises:
adding the PPDU terminator to a tail of a PPDU control frame of the non-highest-priority service queue when the communication apparatus is in the phase of sending the PPDU control frame of the non-highest-priority service queue.
5 . The method according to claim 3 , wherein interrupting the data transmission of the non-highest-priority service queue, and transmitting the data of the highest-priority service queue further comprises:
sending, after receiving data of the non-highest-priority service queue, a PPDU control frame by the communication apparatus, when the communication apparatus is in a phase of receiving the data of the non-highest-priority service queue, and adding a PPDU terminator to a tail of the PPDU control frame.
6 . The method according to claim 3 , wherein interrupting the data transmission of the non-highest-priority service queue, and transmitting the data of the highest-priority service queue further comprises:
sending a PPDU null frame by the communication apparatus after receiving the data of the non-highest-priority service queue when the communication apparatus is in the phase of receiving the data of the non-highest-priority service queue, wherein the PPDU null frame comprises only a PPDU header and a PPDU terminator, and the PPDU null frame indicates to end the data transmission process of the non-highest-priority service queue and to transmit the data of the highest-priority service queue.
7 . The method according to claim 3 , wherein the PPDU terminator is an extremely high throughput-long training field EHT-LTF sequence obtained through 90-degree phase rotation.
8 . A communication apparatus, comprising:
a memory comprising instructions; and
one or more processors in communication with the memory, wherein the one or more processors execute the instructions to:
perform communication transmission; and
contend for a channel by a non-highest-priority service queue, wherein the non-highest-priority service queue obtains the channel through contention, and the non-highest-priority service queue thereby obtains a transmission opportunity; and
when there is to-be-transmitted data in a highest-priority service queue of the communication apparatus, interrupting, by the first communication apparatus, a data transmission process of the non-highest-priority service queue, and control a transceiver to transmit data of the highest-priority service queue in a time window corresponding to the transmission opportunity;
wherein interrupting the data transmission of the non-highest-priority service queue, and transmitting the data of the highest-priority service queue comprises:
interrupting a process of sending a physical layer protocol data unit (PPDU) data frame of the non-highest-priority service queue, when the communication apparatus is in a phase of sending the PPDU data frame of the non-highest-priority service queue, and adding a PPDU terminator at an interrupted position of the PPDU data frame, wherein the PPDU terminator indicates to end the data transmission process of the non-highest-priority service queue and to transmit the data of the highest-priority service queue.
9 . The communication apparatus according to claim 8 , wherein the one or more processors execute the instructions to further have the non-highest-priority service queue contend for another channel.
10 . A communication apparatus, comprising:
a memory comprising instructions; and
one or more processors in communication with the memory, wherein the one or more processors execute the instructions to:
interrupt a data transmission process of a non-highest-priority service queue in a process in which data of the non-highest-priority service queue is transmitted when there is to-be-transmitted data in a highest-priority service queue; and
transmit the data of the highest-priority service queue;
wherein interrupting the data transmission of the non-highest-priority service queue, and transmitting the data of the highest-priority service queue comprises:
interrupting a process of sending a physical layer protocol data unit (PPDU) data frame of the non-highest-priority service queue, when the communication apparatus is in a phase of sending the PPDU data frame of the non-highest-priority service queue, and adding a PPDU terminator at an interrupted position of the PPDU data frame, wherein the PPDU terminator indicates to end the data transmission process of the non-highest-priority service queue and to transmit the data of the highest-priority service queue.
11 . The communication apparatus according to claim 10 , wherein interrupting the data transmission of the non-highest-priority service queue, and transmitting the data of the highest-priority service queue comprises:
adding the PPDU terminator to a tail of a PPDU control frame when the communication apparatus is in the phase of sending the PPDU control frame of the non-highest-priority service queue.
12 . The communication apparatus according to claim 10 , wherein interrupting the data transmission of the non-highest-priority service queue, and transmitting the data of the highest-priority service queue comprises:
sending a PPDU control frame when in the phase of receiving data of the non-highest-priority service queue, and after receiving the data, and adding a PPDU terminator to a tail of the PPDU control frame.
13 . The communication apparatus according to claim 10 , interrupting the data transmission of the non-highest-priority service queue, and transmitting the data of the highest-priority service queue comprises:
sending a PPDU null frame when in the phase of receiving data of the non-highest-priority service queue, and after receiving the data, wherein the PPDU null frame comprises only a PPDU header and a PPDU terminator, and the PPDU null frame indicates to end the data transmission process of the non-highest-priority service queue and transmit the data of the highest-priority service queue.
14 . The communication apparatus according to claim 10 , wherein the PPDU terminator is an extremely high throughput-long training field EHT-LTF sequence obtained through 90-degree phase rotation.
15 . The method according to claim 1 , wherein, after obtaining by the non-highest-priority service queue the channel through contention, only the highest-priority service queue contends for the channel, and the non-highest-priority service queue suspends channel contention.
16 . The service transmission method of claim 3 , wherein, after obtaining by the non-highest-priority service queue the channel through contention, only the highest-priority service queue contends for the channel, and the non-highest-priority service queue suspends channel contention.
17 . The communications apparatus of claim 8 , wherein when the one or more processors execute the instructions, after obtaining by the non-highest-priority service queue the channel through contention, only the highest-priority service queue contends for the channel, and the non-highest-priority service queue suspends channel contention.
18 . The communications apparatus of claim 10 , wherein when the one or more processors execute the instructions, after obtaining by the non-highest-priority service queue the channel through contention, only the highest-priority service queue contends for the channel, and the non-highest-priority service queue suspends channel contention.