Best effort service using a non-guaranteed bit rate (non-GBR) bearer

Patent metadata

Field	Value
Publication number	US-12418824-B2
Application number	US-202217591522-A
Country	US
Kind code	B2
Filing date	Feb 2, 2022
Priority date	Feb 2, 2022
Publication date	Sep 16, 2025
Grant date	Sep 16, 2025

Abstract

Solutions for providing best effort service for voice calls (including video calls) using a non-guaranteed bit rate (GBR) bearer include: receiving, at a proxy node (e.g., a proxy-call session control function (P-CSCF)), a request to set up a voice session for a UE; requesting, by the proxy node, a policy node (e.g., a policy and charging rules function (PCRF) or a policy control function (PCF)) to set up a GBR data pipe (e.g., a dedicated bearer, a quality of service (QoS) class identifier (QCI) 1 bearer, or a fifth generation (5G) QoS identifier (5QI) 1 bearer); based at least on an error condition (e.g., a timeout or error message), instructing, by the proxy node, the UE to set up the voice session using an existing non-GBR data pipe (e.g., a default bearer, a QCI-5 bearer, or a 5QI-5 bearer).

First claim

What is claimed is:

1. A method of providing a voice session over a wireless network, the method comprising:
receiving, at a proxy-call session control function (P-CSCF) node, a request to set up a voice session for a user equipment (UE);
transmitting, by the P-CSCF node to a diameter routing agent (DRA) or Service Communication Proxy (SCP), a request to set up a fifth generation (5G) quality of service (QoS) identifier 1 (5QI-1) or 5G QoS identifier 2 (5QI-2) bearer for the voice session of the UE, the request including an identifier (ID) assigned to the UE, wherein the 5QI-1 or 5QI-2 bearer is a guaranteed bit rate (GBR) data pipe of a 5G network, and wherein the P-CSCF node starts a timer upon transmitting the request;
receiving, by the P-CSCF node, an indication of an error condition from the DRA or SCP prior to timeout of the timer, wherein the error condition corresponds to a network error rate exceeding an error threshold or a network performance metric failing to meet a performance threshold; and
based at least on the error condition, sending, by the P-CSCF node, an instruction to the UE that instructs the UE to use an existing 5G QoS identifier 5 (5QI-5) bearer for the voice session of the UE, wherein the existing 5QI-5 bearer is a non-GBR data pipe of the 5G network.

2. The method of claim 1 , wherein the 5QI-1 or 5QI-2 bearer comprises a dedicated bearer, and wherein the existing 5QI-5 bearer comprises a default bearer.

3. The method of claim 1 , wherein the DRA or SCP forwards the request to a policy and charging rules function (PCRF).

4. The method of claim 1 , wherein the DRA or SCP forwards the request to a policy control function (PCF).

5. The method of claim 1 , wherein the voice session is a voice over long-term evolution (VoLTE) call.

6. The method of claim 1 , wherein the voice session is a voice over new radio (VoNR) call.

7. The method of claim 1 , wherein the voice session is a video call.

8. A system for providing a voice session over a wireless network, the system comprising:
a processor; and
a computer-readable medium storing instructions that are operative upon execution by the processor to:
receive, at a proxy-call session control function (P-CSCF) node, a request to set up a voice session for a user equipment (UE);
transmit, by the P-CSCF node to a diameter routing agent (DRA) or Service Communication Proxy (SCP), a request to set up a fifth generation (5G) quality of service (QoS) identifier 1 (5QI-1) or 5G QoS identifier 2 (5QI-2) bearer for the voice session of the UE, the request including an identifier (ID) assigned to the UE, wherein the 5QI-1 or 5QI-2 bearer is a guaranteed bit rate (GBR) data pipe of a 5G network, and wherein the P-CSCF node starts a timer upon transmitting the request;
receive, by the P-CSCF node, an indication of an error condition from the DRA or SCP prior to timeout of the timer, wherein the error condition corresponds to a network error rate exceeding an error threshold or a network performance metric failing to meet a performance threshold; and
based at least on the error condition, send, by the P-CSCF node, an instruction to the UE that instructs the UE to use an existing 5G QoS identifier 5 (5QI-5) bearer for the voice session of the UE, wherein the existing 5QI-5 bearer is a non-GBR data pipe of the 5G network.

9. The system of claim 8 , wherein the 5QI-1 or 5QI-2 bearer comprises a dedicated bearer, and wherein the existing 5QI-5 bearer comprises a default bearer.

10. The system of claim 8 , wherein the DRA or SCP forwards the request to a policy and charging rules function (PCRF).

11. The system of claim 8 , wherein the DRA or SCP forwards the request to a policy control function (PCF).

12. The system of claim 8 wherein the voice session is a voice over long-term evolution (VoLTE) call or a voice over new radio (VoNR) call.

13. The system of claim 8 , wherein the voice session is a video call.

14. One or more computer storage devices having computer-executable instructions stored thereon, which, upon execution by a computer, cause the computer to perform operations comprising:
receiving, at a proxy-call session control function (P-CSCF) node, a request to set up a voice session for a user equipment (UE);
transmitting, by the P-CSCF node to a diameter routing agent (DRA) or Service Communication Proxy (SCP), a request to set up a fifth generation (5G) quality of service (QoS) identifier 1 (5QI-1) or 5G QoS identifier 2 (5QI-2) bearer for the voice session of the UE, the request including an identifier (ID) assigned to the UE, wherein the 5QI-1 or 5QI-2 bearer is a guaranteed bit rate (GBR) data pipe of a 5G network, and wherein the P-CSCF node starts a timer upon transmitting the request;
receiving, by the P-CSCF node, an indication of an error condition from the DRA or SCP prior to timeout of the timer, wherein the error condition corresponds to a network error rate exceeding an error threshold or a network performance metric failing to meet a performance threshold; and
based at least on the error condition, sending, by the P-CSCF node, an instruction to the UE that instructs the UE to use an existing 5G QoS identifier 5 (5QI-5) bearer for the voice session of the UE, wherein the existing 5QI-5 bearer is a non-GBR data pipe of the 5G network.

15. The one or more computer storage devices of claim 14 , wherein the 5QI-1 or 5QI-2 bearer comprises a dedicated bearer, and wherein the existing 5QI-5 bearer comprises a default bearer.

16. The one or more computer storage devices of claim 14 , wherein the DRA or SCP forwards the request to a policy and charging rules function (PCRF).

17. The one or more computer storage devices of claim 14 , wherein the DRA or SCP forwards the request to a policy control function (PCF).

18. The one or more computer storage devices of claim 14 , wherein the voice session is a voice over long-term evolution (VoLTE) call.

19. The one or more computer storage devices of claim 14 , wherein the voice session is a voice over new radio (VoNR) call.

20. The one or more computer storage devices of claim 14 , wherein the voice session is a video call.

Assignees

• T Mobile Usa Inc

Inventors

• Badar Saqib
• Antsev Boris
• Mufti Shujaur
• Sabeur Nassereddine

Classifications

• H04L65/1069

  Session establishment or de-establishment · CPC title

• H04L43/0823

  Errors, e.g. transmission errors · CPC title

• H04L65/1045

  Proxies, e.g. for session initiation protocol [SIP] · CPC title

• H04M15/66

  Policy and charging system · CPC title

• H04L65/1016

  IP multimedia subsystem [IMS] · CPC title