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EP-4311293-B1 - BURST MONITORING METHOD AND APPARATUS

EP4311293B1EP 4311293 B1EP4311293 B1EP 4311293B1EP-4311293-B1

Inventors

  • XU, XIAOYING

Dates

Publication Date
20260506
Application Date
20210318

Claims (13)

  1. A burst monitoring method, comprising: receiving, by an access network device, a delay monitoring request (S110) from a core network device, wherein the delay monitoring request indicates to perform delay monitoring on a periodic burst; and determining, by the access network device, an uplink delay of an uplink burst between a terminal device and the access network device in response to the delay monitoring request (S120), wherein the uplink delay of the uplink burst between the terminal device and the access network device comprises a first uplink delay, the first uplink delay comprises duration from a first time to a second time, the first time is a grant time of the first data packet that arrives at a media access control, MAC, layer of the terminal device in the uplink burst, and the second time is a sending time of the last data packet that is sent from a packet data convergence protocol, PDCP, layer of the access network device in the uplink burst.
  2. The method according to claim 1, wherein the first uplink delay comprises a second uplink delay and a third uplink delay, the second uplink delay comprises duration from the first time to a third time, the third uplink delay comprises duration from the third time to the second time, and the third time is a sending time of the last data packet that is sent from a radio link control, RLC, layer of the access network device to the PDCP layer of the access network device in the uplink burst.
  3. The method according to claim 1 or 2, wherein the uplink delay of the uplink burst between the terminal device and the access network device further comprises a fourth uplink delay, the fourth uplink delay comprises duration from a fourth time to a fifth time, or the fourth uplink delay comprises duration from a fourth time to the first time, the fourth time is an arrival time of the first data packet that arrives at a PDCP layer of the terminal device in the uplink burst, and the fifth time is an arrival time of the first data packet that arrives at the MAC layer of the terminal device in the uplink burst.
  4. The method according to claims 2 and 3, wherein the determining, by the access network device, an uplink delay of an uplink burst between a terminal device and the access network device in response to the delay monitoring request comprises: determining, by the access network device, the second uplink delay and the third uplink delay in response to the delay monitoring request, wherein the second uplink delay comprises the duration from the first time to the third time, the third uplink delay comprises the duration from the third time to the second time, and the third time is the sending time of the last data packet that is sent from the radio link control, RLC, layer of the access network device to the PDCP layer of the access network device in the uplink burst; determining, by the access network device, the fourth uplink delay; and determining, by the access network device, the uplink delay of the uplink burst between the terminal device and the access network device based on the second uplink delay, the third uplink delay, and the fourth uplink delay.
  5. The method according to claim 3, wherein the determining, by the access network device, an uplink delay of an uplink burst between a terminal device and the access network device in response to the delay monitoring request comprises: determining, by the access network device, the first time and the second time in response to the delay monitoring request; determining, by the access network device, the fourth uplink delay; and determining, by the access network device, the uplink delay of the uplink burst between the terminal device and the access network device based on the fourth uplink delay, the first time, and the second time.
  6. The method according to claim 2, wherein the determining, by the access network device, an uplink delay of an uplink burst between a terminal device and the access network device in response to the delay monitoring request comprises: determining, by the access network device, the second uplink delay and the third uplink delay in response to the delay monitoring request; and determining, by the access network device, the uplink delay of the uplink burst between the terminal device and the access network device based on the second uplink delay and the third uplink delay.
  7. The method according to claim 2, wherein the determining, by the access network device, an uplink delay of an uplink burst between a terminal device and the access network device in response to the delay monitoring request comprises: determining, by the access network device, the first time and the second time in response to the delay monitoring request; and determining, by the access network device, the uplink delay of the uplink burst between the terminal device and the access network device based on the first time and the second time.
  8. The method according to any one of claims 1 to 7, wherein the method further comprises: sending, by the access network device, response information to the core network device, wherein the response information comprises the uplink delay of the uplink burst between the terminal device and the access network device.
  9. A burst monitoring method, comprising: sending, by a core network device, a delay monitoring request (S110) to an access network device, wherein the delay monitoring request indicates to perform delay monitoring on a periodic burst; receiving, by the core network device, response information from the access network device, wherein the response information is information for responding to the delay monitoring request, and the response information comprises an uplink delay of an uplink burst between a terminal device and the access network device (S130), wherein the uplink delay of the uplink burst between the terminal device and the access network device comprises a first uplink delay, the first uplink delay comprises duration from a first time to a second time, the first time is a grant time of the first data packet that arrives at a media access control, MAC, layer of the terminal device in the uplink burst, and the second time is a sending time of the last data packet that is sent from a packet data convergence protocol PDCP layer of the access network device in the uplink burst; determining, by the core network device, a fifth uplink delay, wherein the fifth uplink delay is a delay, between the access network device and the core network device, of the last data packet that is sent from the PDCP layer of the access network device in the uplink burst (S140); and determining, by the core network device, an uplink delay of the uplink burst between the terminal device and the core network device based on the fifth uplink delay and the uplink delay of the uplink burst between the terminal device and the access network device (S150).
  10. The method according to claim 9, wherein the uplink delay of the uplink burst between the terminal device and the access network device further comprises a fourth uplink delay, the fourth uplink delay comprises duration from a fourth time to a fifth time, or the fourth uplink delay comprises duration from a fourth time to the first time, the fourth time is an arrival time of the first data packet that arrives at a PDCP layer of the terminal device in the uplink burst, and the fifth time is an arrival time of the first data packet that arrives at the MAC layer of the terminal device in the uplink burst.
  11. An apparatus, which is configured to perform the method according to any one of claims 1-8.
  12. An apparatus, which is configured to perform the method according to any one of claims 9-10.
  13. A computer-readable storage medium, configured to store computer instructions, wherein the computer instructions are executed by a processor to implement the method according to any one of claims 1-10.

Description

TECHNICAL FIELD This application relates to the communication field, and more specifically, to a burst monitoring method and apparatus. BACKGROUND During data transmission, a network device (for example, an access network device or a core network device) generally monitors a performance parameter such as a transmission delay or a packet loss rate by using a data packet as a granularity. In other words, the network device evaluates data transmission performance by monitoring a performance parameter of a data packet. Specifically, the network device monitors a performance parameter of a data packet between the terminal device and the access network device, and monitors a performance parameter of a data packet between the terminal device and the core network device. However, in some scenarios, a service flow is transmitted in a transmission unit of a burst (burst), and one burst includes one or more data packets. However, a performance parameter obtained by performing monitoring at a granularity of a data packet cannot be used to accurately evaluate data transmission performance, resulting in poor user experience. Data of a video type is used as an example. One video frame is one burst. The terminal can display an image of a video frame only when correctly receiving all data packets in the frame within a preset delay. Otherwise, frame loss occurs, and consequently video freeze occurs, resulting in poor user experience. Therefore, a technology needs to be provided to improve accuracy of evaluating data transmission performance, so as to improve user experience. Document US 2017/034025 A1 describes systems, methods, apparatuses, and computer program products for packet delay measurement are provided. One method may include sending, by a network node, a grant in uplink to a user equipment that previously indicated a need for data transmission for quality of service (QoS) class identifier (QCI) services. The method may then include storing a time of the uplink grant to the user equipment, and measuring a time point when a last part of a packet data convergence protocol (PDCP) serving data unit (SDU) related to QCI services has been confirmed by sending an acknowledgement to the user equipment. Document CN 111 866 929 A describes a communication method, related equipment and a system, wherein the method comprises the following steps: the first network equipment receives first information from the terminal equipment, the first information comprises a first time delay and a second time delay or the first information comprises a third time delay, the first time delay is the time delay of the terminal equipment on a first path, the second time delay is the time delay of the terminal equipment on a second path, the third time delay is obtained by the terminal equipment according to the time delay of the terminal equipment on the first path and the time delay of the terminal equipment on the second path, and data packets transmitted on the first path and the second path both belong to a first DRB. And the first network equipment determines the uplink time delay of the first DRB according to the first information, a fourth time delay and a fifth time delay, wherein the fourth time delay is a network side time delay on the first path, and the fifth time delay is a network side time delay on the second path. SUMMARY Embodiments of this application provide a burst monitoring method and apparatus. A network device (for example, an access network device) monitors a delay of a burst (an uplink burst or a downlink burst) between a terminal device and the access network device, and a network device (for example, a core network device) monitors a delay of a burst (an uplink burst or a downlink burst) between the terminal device and the core network device. Therefore, the network device (for example, the access network device or the core network device) can more accurately evaluate data transmission performance based on the delay of the burst, to improve user experience. In addition, in embodiments of this application, the network device (for example, the access network device) further monitors a burst error rate for a plurality of bursts, so that data transmission performance can be more accurately evaluated based on the burst error rate for the burst, thereby improving user experience. The present invention is defined by the attached set of claims. According to a first aspect, a burst monitoring method is provided, including: An access network device receives a delay monitoring request from a core network device, where the delay monitoring request indicates to perform delay monitoring on a periodic burst. The access network device determines an uplink delay of an uplink burst between a terminal device and the access network device in response to the delay monitoring request, where the uplink delay of the uplink burst between the terminal device and the access network device includes a first uplink delay, the first uplink delay in