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EP-4075907-B1 - COMMUNICATION METHOD, APPARATUS AND SYSTEM

EP4075907B1EP 4075907 B1EP4075907 B1EP 4075907B1EP-4075907-B1

Inventors

  • ZHU, Fangyuan
  • LI, YAN
  • LIU, JIANNING

Dates

Publication Date
20260506
Application Date
20191230

Claims (15)

  1. A communication method, comprising: receiving, by a communication apparatus, first parameter information of an air interface scheduling resource allocated by an access network device accessed by a terminal device, wherein the first parameter information comprises a length of a first periodicity and a first start moment (401), and the first periodicity and the first start moment are respectively a periodicity and a start moment corresponding to transmitting first uplink data from the terminal device by the access network device on an air interface side; and determining, by the communication apparatus based on the first parameter information, a second parameter information of a scheduling resource required for processing the first uplink data, wherein the second parameter information comprises a length of a second periodicity and a second start moment (402), and the second periodicity and the second start moment are respectively a periodicity and a start moment corresponding to processing the first uplink data by the communication apparatus.
  2. The method according to claim 1, wherein the determining, by the communication apparatus based on the first parameter information, second parameter information of a scheduling resource required for processing the first uplink data comprises: adjusting, by the communication apparatus, a length of a third periodicity based on the length of the first periodicity, to obtain the length of the second periodicity, wherein the third periodicity is a periodicity corresponding to processing second uplink data by the communication apparatus before the adjustment; and/or adjusting, by the communication apparatus, a third start moment based on the first start moment, to obtain the second start moment, wherein the third start moment is a start moment corresponding to processing the second uplink data by the communication apparatus before the adjustment.
  3. The method according to claim 2, wherein the communication apparatus is a terminal device; the processing the first uplink data comprises: transmitting the first uplink data inside the terminal device; and the method further comprises: after transmitting the first uplink data inside the terminal device based on the length of the second periodicity and/or the second start moment, waiting, by the terminal device, for a first duration, and sending the first uplink data on the air interface scheduling resource, wherein the first duration is less than or equal to a second duration, and the second duration is duration for which the terminal device waits before sending the second uplink data on the air interface scheduling resource and after transmitting the second uplink data inside the terminal device based on the length of the third periodicity and/or the third start moment.
  4. The method according to any one of claims 1 to 3, wherein the communication apparatus is the terminal device; the method further comprises: sending, by the terminal device, a first indication information (601) to a mobility management network element, wherein the first indication information (601) is used to request the first parameter information (606) of the air interface scheduling resource currently allocated by the access network device accessed by the terminal device; and the receiving, by a communication apparatus, first parameter information (601) of an air interface scheduling resource allocated by an access network device accessed by a terminal device comprises: receiving, by the terminal device, the first parameter information (606) from the mobility management network element.
  5. The method according to claim 2, wherein the communication apparatus is an application server; and the method further comprises: after the first uplink data arrives at the application server, waiting, by the application server, for third duration based on the length of the second periodicity and/or the second start moment, and processing the first uplink data, wherein the third duration is less than or equal to fourth duration, and the fourth duration is duration for which the application server waits before processing the second uplink data based on the length of the third periodicity and/or the third start moment after the second uplink data arrives at the application server.
  6. The method according to claim 1, 2, or 5, wherein the communication apparatus is the application server; the method further comprises: sending, by the application server, a second request (602) to an application function network element, wherein the second request (602) comprises identification information of the terminal device, and the second request (602) is used to request the first parameter information (606) of the air interface scheduling resource currently allocated by the access network device accessed by the terminal device; and the receiving, by a communication apparatus, first parameter information (606) of an air interface scheduling resource allocated by an access network device accessed by a terminal device comprises: receiving, by the application server, the first parameter information (606) from the application function network element.
  7. A communication apparatus, comprising: a receiving unit (820), configured to receive first parameter information of an air interface scheduling resource allocated by an access network device accessed by a terminal device, wherein the first parameter information comprises a length of a first periodicity and a first start moment, and the first periodicity and the first start moment are respectively a periodicity and a start moment corresponding to transmitting first uplink data from the terminal device by the access network device on an air interface side; and a determining unit (830), configured to determine, based on the first parameter information, second parameter information of a scheduling resource required for processing the first uplink data, wherein the second parameter information comprises a length of a second periodicity and a second start moment, and the second periodicity and the second start moment are respectively a periodicity and a start moment corresponding to processing the first uplink data by the communication apparatus.
  8. The apparatus according to claim 7, wherein the determining unit (830) is specifically configured to: adjust a length of a third periodicity based on the length of the first periodicity, to obtain the length of the second periodicity, wherein the third periodicity is a periodicity corresponding to processing second uplink data by the communication apparatus before the adjustment; and/or adjust a third start moment based on the first start moment, to obtain the second start moment, wherein the third start moment is a start moment corresponding to processing the second uplink data by the communication apparatus before the adjustment.
  9. The apparatus according to claim 8, wherein the communication apparatus is a terminal device; the processing the uplink data comprises: transmitting the first uplink data inside the terminal device; and the apparatus further comprises a sending unit (810), configured to: after transmitting the first uplink data inside the terminal device based on the length of the second periodicity and/or the second start moment, wait for first duration, and send the first uplink data on the air interface scheduling resource, wherein the first duration is less than or equal to second duration, and the second duration is duration for which the sending unit waits before sending the second uplink data on the air interface scheduling resource and after transmitting the second uplink data inside the terminal device based on the length of the third periodicity and/or the third start moment.
  10. The apparatus according to any one of claims 7 to 9, wherein the communication apparatus is the terminal device; the apparatus further comprises the sending unit (810), configured to send first indication information (601) to a mobility management network element, wherein the first indication information (601) is used to request the first parameter information (606) of the air interface scheduling resource currently allocated by the access network device accessed by the terminal device; and the receiving unit (820) is specifically configured to receive the first parameter information (606) from the mobility management network element.
  11. The apparatus according to claim 7, wherein the communication apparatus is an application server; and the apparatus further comprises a processing unit (840), configured to: after the first uplink data arrives at the application server, wait for third duration based on the length of the second periodicity and/or the second start moment, and process the first uplink data, wherein the third duration is less than or equal to fourth duration, and the fourth duration is duration for which the application server waits before processing the second uplink data based on the length of the third periodicity and/or the third start moment after the second uplink data arrives at the application server.
  12. The apparatus according to claim 7, 8, or 11, wherein the communication apparatus is the application server; the apparatus further comprises a sending unit, configured to send a second request (602) to an application function network element, wherein the second request (602) comprises identification information of the terminal device, and the second request (602) is used to request the first parameter information (606) of the air interface scheduling resource currently allocated by the access network device accessed by the terminal device; and the receiving unit (820) is configured to receive, from the application function network element, first parameter information (606) of the air interface scheduling resource allocated by the access network device accessed by the terminal device; the second request (602) is used to request the first parameter information (606) of the air interface scheduling resource currently allocated by the access network device accessed by the terminal device comprises: a second request (602) comprises second indication information, and the second indication information is used to request the first parameter information (606) of the air interface scheduling resource currently allocated by the access network device accessed by the terminal device.
  13. A communication system, comprising an access network device and a core network element, wherein the access network device is configured to send, to the core network element, first parameter information of an air interface scheduling resource allocated by the access network device accessed by a terminal device, wherein the first parameter information comprises a length of a first periodicity and a first start moment, and the first periodicity and the first start moment are respectively a periodicity and a start moment corresponding to transmitting first uplink data from the terminal device by the access network device on an air interface side; and the core network element is configured to send the first parameter information to a communication apparatus, wherein the first parameter information is used by the communication apparatus to determine, based on the first parameter information, second parameter information of a scheduling resource required for processing the first uplink data, the second parameter information comprises a length of a second periodicity and a second start moment, and the second periodicity and the second start moment are respectively a periodicity and a start moment corresponding to processing the first uplink data by the communication apparatus.
  14. A computer-readable storage medium (920), wherein the computer-readable storage medium (920) stores a program; and when the program is invoked by a processor (910), the method according to any one of claims 1 to 6 is performed.
  15. A computer program, wherein when the program is invoked by a processor (910), the method according to any one of claims 1 to 6 is performed.

Description

TECHNICAL FIELD This application relates to the field of communication technologies, and in particular, to a communication method, apparatus, and system. BACKGROUND In some application scenarios, when performing a service, a terminal device needs to send data to a network side, and the network side processes the data reported by the terminal device. An example in which the terminal device is a media device is used for description. The media device includes an audio (Audio) processor and a radio (Radio) processor. The audio processor and the radio processor of the media device are encapsulated separately. When the media device sends media frame data, the following processes are performed: (1) The audio processor processes the media frame data and then sends the media frame data to the radio processor.(2) The radio processor waits for an air interface scheduling resource allocated by an access network device, and sends the media frame data on the air interface scheduling resource after receiving the air interface scheduling resource.(3) After an application server receives the media frame data, an audio processor of the application server samples and processes the media frame data after a next data sampling periodicity of the application server arrives. How to optimize a latency in the foregoing deterministic media transmission is a problem to be resolved. WO 2011/128141 A1 discusses a method and apparatus for coordinating audio data processing and network communication processing in a communication device. SUMMARY A communication method, apparatus, and system, to optimize a latency in is provided. deterministic media transmission. According to a first aspect, this application provides a communication method, including: A communication apparatus receives first parameter information of an air interface scheduling resource allocated by an access network device accessed by a terminal device, where the first parameter information includes a length of a first periodicity and a first start moment, and the first periodicity and the first start moment are respectively a periodicity and a start moment corresponding to transmitting first uplink data from the terminal device by the access network device on an air interface side. The communication apparatus determines, based on the first parameter information, second parameter information of a scheduling resource required for processing the first uplink data, where the second parameter information includes a length of a second periodicity and a second start moment, and the second periodicity and the second start moment are respectively a periodicity and a start moment corresponding to processing the first uplink data by the communication apparatus. Based on the foregoing solution, the communication apparatus receives the first parameter information of the air interface scheduling resource, and adjusts, based on the first parameter information, a periodicity and/or a start moment for locally processing the uplink data, so that an end-to-end latency is reduced, and a latency variation of a deterministic service is reduced, thereby improving user experience. In a possible implementation, that the communication apparatus determines, based on the first parameter information, second parameter information of a scheduling resource required for processing the first uplink data includes: The communication apparatus adjusts a length of a third periodicity based on the length of the first periodicity, to obtain the length of the second periodicity, where the third periodicity is a periodicity corresponding to processing second uplink data by the communication apparatus before the adjustment; and/or the communication apparatus adjusts a third start moment based on the first start moment, to obtain the second start moment, where the third start moment is a start moment corresponding to processing the second uplink data by the communication apparatus before the adjustment. In a possible implementation, the communication apparatus is a terminal device. The processing the uplink data includes: transmitting the first uplink data inside the terminal device. After transmitting the first uplink data inside the terminal device based on the length of the second periodicity and/or the second start moment, the terminal device further waits for first duration, and sends the first uplink data on the air interface scheduling resource. The first duration is less than or equal to second duration, and the second duration is duration for which the terminal device waits before sending the second uplink data on the air interface scheduling resource and after transmitting the second uplink data inside the terminal device based on the length of the third periodicity and/or the third start moment. In a possible implementation, the communication apparatus is the terminal device. The terminal device may further send first indication information to a mobility management network element, where the first indicat