AMBR control method, device, and system

Patent metadata

Field	Value
Publication number	US-12256261-B2
Application number	US-202217695556-A
Country	US
Kind code	B2
Filing date	Mar 15, 2022
Priority date	Sep 27, 2019
Publication date	Mar 18, 2025
Grant date	Mar 18, 2025

Abstract

Disclosed is an AMBR control method, device, and system, so that a quality of service (QoS) control mechanism can be used to control use of resources in a network slice by a terminal device. The method includes: a mobility management network element obtaining M pieces of single network slice selection assistance information (S-NSSAI) corresponding to a terminal device and a first slice-AMBR corresponding to each piece of S-NSSAI in the M pieces of S-NSSAI; and sending the M pieces of S-NSSAI and the first slice-AMBR corresponding to each piece of S-NSSAI to an access network device, where the first slice-AMBR corresponding to each piece of S-NSSAI is used to determine a second slice-AMBR corresponding to the S-NSSAI, and the second slice-AMBR corresponding to each piece of S-NSSAI is used to control an aggregate bit rate of non-guaranteed bit rate non-GBR QoS flows in a network slice indicated by the S-NSSAI.

First claim

What is claimed is:

1. An aggregate maximum bit rate (AMBR) control method, the method comprising:
obtaining, by a mobility management network element, M pieces of single network slice selection assistance information (S-NSSAI) corresponding to a terminal device and a first slice aggregate maximum bit rate (slice-AMBR) corresponding to each piece of S-NSSAI in the M pieces of S-NSSAI, wherein M is a positive integer, and wherein the first slice-AMBR corresponding to each piece of S-NSSAI is a subscribed first slice-AMBR corresponding to the S-NSSAI; and
sending, by the mobility management network element, the M pieces of S-NSSAI and the first slice-AMBR corresponding to each piece of S-NSSAI to an access network device, wherein the first slice-AMBR corresponding to each piece of S-NSSAI is used to determine at the access network device a second slice-AMBR corresponding to the S-NSSAI, and the second slice-AMBR corresponding to each piece of S-NSSAI is used to control an aggregate bit rate of non-guaranteed bit rate (non-GBR) quality of service (QOS) flows in a network slice indicated by the S-NSSAI.

2. The method according to claim 1 , wherein each piece of S-NSSAI in the M pieces of S-NSSAI corresponding to the terminal device is S-NSSAI in a home network of the terminal device, and the obtaining, by the mobility management network element, the M pieces of S-NSSAI corresponding to the terminal device and the first slice-AMBR corresponding to each piece of S-NSSAI in the M pieces of S-NSSAI comprises:
receiving, by the mobility management network element, the M pieces of S-NSSAI corresponding to the terminal device and the first slice-AMBR corresponding to each piece of S-NSSAI in the M pieces of S-NSSAI from a unified data management network element.

3. The method according to claim 1 , wherein the first slice-AMBR corresponding to each piece of S-NSSAI is from a policy control network element.

4. The method according to claim 3 , wherein each piece of S-NSSAI in the M pieces of S-NSSAI corresponding to the terminal device is S-NSSAI in a home network of the terminal device, and the obtaining, by the mobility management network element, the M pieces of S-NSSAI corresponding to the terminal device and the first slice-AMBR corresponding to each piece of S-NSSAI in the M pieces of S-NSSAI comprises:
receiving, by the mobility management network element, the M pieces of S-NSSAI corresponding to the terminal device and the first slice-AMBR corresponding to each piece of S-NSSAI in the M pieces of S-NSSAI from the policy control network element.

5. The method according to claim 3 , wherein each piece of S-NSSAI in the M pieces of S-NSSAI corresponding to the terminal device is S-NSSAI in a visited network of the terminal device, and the obtaining, by the mobility management network element, the M pieces of S-NSSAI corresponding to the terminal device and the first slice-AMBR corresponding to each piece of S-NSSAI in the M pieces of S-NSSAI comprises:
sending, by the mobility management network element, a third message to the policy control network element, wherein the third message carries the M pieces of S-NSSAI corresponding to the terminal device, and the M pieces of S-NSSAI corresponding to the terminal device comprise M pieces of S-NSSAI that are in the visited network of the terminal device and that are obtained by mapping allowed S-NSSAI of the terminal device or default NSSAI of the terminal device; and
receiving, by the mobility management network element, the M pieces of S-NSSAI corresponding to the terminal device and the first slice-AMBR corresponding to each piece of S-NSSAI in the M pieces of S-NSSAI from the policy control network element.

6. The method according to claim 1 , wherein the first slice-AMBR corresponding to each piece of S-NSSAI is a slice-AMBR corresponding to a first access network type, and the access network device is an access network device of the first access network type.

7. A mobility management network element, the mobility management network element comprising:
a processor configured to obtain M pieces of single network slice selection assistance information (S-NSSAI) corresponding to a terminal device and to obtain a first slice aggregate maximum bit rate (slice-AMBR) corresponding to each piece of S-NSSAI in the M pieces of S-NSSAI, wherein M is a positive integer, and wherein the first slice-AMBR corresponding to each piece of S-NSSAI is a subscribed first slice-AMBR corresponding to the S-NSSAI; and
a transceiver configured to send the M pieces of S-NSSAI and the first slice-AMBR corresponding to each piece of S-NSSAI to an access network device, wherein the first slice-AMBR corresponding to each piece of S-NSSAI is used to determine at the access network device a second slice-AMBR corresponding to the S-NSSAI, and the second slice-AMBR corresponding to each piece of S-NSSAI is used to control an aggregate bit rate of non-guaranteed bit rate (non-GBR) quality of service (QOS) flows in a network slice indicated by the S-NSSAI.

8. The mobility management network element according to claim 7 ,
wherein each piece of S-NSSAI in the M pieces of S-NSSAI corresponding to the terminal device is S-NSSAI in a home network of the terminal device; and
wherein the processor is further configured to:
receive, via the transceiver, the M pieces of S-NSSAI corresponding to the terminal device and the first slice-AMBR corresponding to each piece of S-NSSAI in the M pieces of S-NSSAI from a unified data management network element.

9. The mobility management network element according to claim 8 , wherein the transceiver is further configured to:
send, to the access network device, S-NSSAI that is in a visited network of the terminal device and that corresponds to each piece of S-NSSAI in the M pieces of S-NSSAI corresponding to the terminal device.

10. The mobility management network element according to claim 7 , wherein the first slice-AMBR corresponding to each piece of S-NSSAI is from a policy control network element.

11. The mobility management network element according to claim 10 , wherein each piece of S-NSSAI in the M pieces of S-NSSAI corresponding to the terminal device is S-NSSAI in a home network of the terminal device; and the processor is further configured to:
receive, via the transceiver, the M pieces of S-NSSAI corresponding to the terminal device and the first slice-AMBR corresponding to each piece of S-NSSAI in the M pieces of S-NSSAI from the policy control network element.

12. The mobility management network element according to claim 10 ,
wherein each piece of S-NSSAI in the M pieces of S-NSSAI corresponding to the terminal device is S-NSSAI in a visited network of the terminal device; and
wherein the processor is further configured to:
send a third message to the policy control network element via the transceiver, wherein the third message carries the M pieces of S-NSSAI corresponding to the terminal device, and the M pieces of S-NSSAI corresponding to the terminal device comprise M pieces of S-NSSAI that are in the visited network of the terminal device and that are obtained by mapping allowed S-NSSAI of the terminal device or default NSSAI of the terminal device; and
receive, via the transceiver, the M pieces of S-NSSAI corresponding to the terminal device and the first slice-AMBR corresponding to each piece of S-NSSAI in the M pieces of S-NSSAI from the policy control network element.

13. The mobility management network element according to claim 7 , wherein the transceiver is further configured to send a first session-AMBR corresponding to the first access network type to the access network device,

Assignees

• Huawei Tech Co Ltd

Inventors

• Wu Yizhuang
• Sun Haiyang
• Zhu Fangyuan

Classifications

• H04W28/0268 Primary

  using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR] (negotiating SLA or negotiating QoS H04W28/24) · CPC title

• H04W28/0257 Primary

  the individual bearer or channel having a maximum bit rate or a bit rate guarantee · CPC title

• H04W28/22

  Negotiating communication rate · CPC title

• H04W60/00

  Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration · CPC title