5G avoidance during LTE-based real-time communications

Patent metadata

Field	Value
Publication number	US-11212859-B2
Application number	US-201916696375-A
Country	US
Kind code	B2
Filing date	Nov 26, 2019
Priority date	Nov 26, 2019
Publication date	Dec 28, 2021
Grant date	Dec 28, 2021

Abstract

A radio access network (RAN) configured to support real-time communications over a Long-Term Evolution (LTE) connection is described herein. When a request for a data transmission is received and a real-time communication session over the LTE connection is established, the RAN utilizes the LTE connection, not a New Radio (NR) connection, for the data transmission. When a request for a further real-time communication is received and there is an active data transmission session over the NR connection, the RAN performs at least one of ceasing to allocate traffic to the NR connection for downlink or reconfiguring the data transmission session to send data over the LTE connection.

First claim

What is claimed is:

1. A radio access network, comprising:
a processor;
a Long-Term Evolution (LTE) transceiver coupled to the processor and configured to send and receive at least real-time communications and data transmissions;
a new radio (NR) transceiver coupled to the process and configured to send and receive at least data transmissions; and
memory coupled to the processor and storing instructions that, when executed by the processor, cause the radio access network to perform operations including:
receiving a first request for a first data transmission session;
upon receiving the first request, determining whether a first real-time communication session is established and whether a NR connection is absent or idle;
when the first real-time communication session is established and the NR connection is absent or idle, utilizing an LTE connection to service the first request;
receiving a second request for a second real-time communication session;
upon receiving the second request, determining whether a second data transmission session over the NR connection is active;
when the second data transmission session is active, performing at least one of:
ceasing to allocate traffic to the NR connection for downlink, or
reconfiguring the second data transmission session to send data over the LTE connection.

2. The radio access network of claim 1 , wherein the first real-time communication session or the second real-time communication session is one of a voice over LTE (VoLTE) communication session or a video over LTE (ViLTE) communication session.

3. The radio access network of claim 1 , wherein the first real-time communication session or the second real-time communication session is supported by the LTE connection.

4. The radio access network of claim 1 , wherein the operations further include, when the first real-time communication session is not established, utilizing the NR connection to service the first request or establishing the NR connection to service the first request.

5. The radio access network of claim 1 , wherein the operations further include, following completion of the first real-time communication session, reconfiguring the first data transmission session to utilize the NR connection.

6. The radio access network of claim 1 , wherein the radio access network performs the ceasing if a data transmission buffer size is less than a threshold and performs the reconfiguring if the data transmission buffer size meets or exceeds the threshold.

7. The radio access network of claim 1 , wherein performing the ceasing includes performing the ceasing for a threshold amount of time to cause release of the NR connection.

8. The radio access network of claim 1 , wherein performing at least one of the ceasing and the reconfiguring comprises performing the reconfiguring after performing the ceasing for a threshold amount of time.

9. The radio access network of claim 1 , wherein performing the reconfiguring includes:
performing the reconfiguring a single time upon determining whether the second data transmission session over the NR connection is active; and
releasing the NR connection.

10. The radio access network of claim 1 , wherein the operations further include establishing the second real-time communication session after performing the reconfiguring or the ceasing.

11. A method comprising:
receiving, by a radio access network (RAN), a request to for a real-time communication session;
upon receiving the request, determining, by the RAN, whether a data transmission session over a new radio (NR) connection is active;
when the data transmission session is active and a data transmission buffer size is less than a threshold, ceasing, by the RAN, to allocate traffic to the NR connection for downlink; and
when the data transmission session is active and the data transmission buffer size meets or exceeds the threshold, reconfiguring the data transmission session to send data over a Long-Term Evolution (LTE) connection.

12. The method of claim 11 , wherein the ceasing includes ceasing for a threshold amount of time to cause release of the NR connection.

13. The method of claim 11 , further comprising, after ceasing to allocate traffic to the NR connection for downlink, reconfiguring the second data transmission session to send data over the LTE connection.

14. The method of claim 11 , further comprising establishing the real-time communication session after ceasing to allocate traffic to the NR connection for downlink.

15. A non-transitory computer-readable medium having programming instructions stored thereon that, when executed by a computing device of a radio access network cause the radio access network to perform operations comprising:
receiving a first request for a first data transmission session;
upon receiving the first request, determining whether a first real-time communication session is established and whether a new radio (NR) connection is absent or idle;
when the first real-time communication session is established and the NR connection is absent or idle, utilizing a Long-Term Evolution (LTE) connection to service the first request;
receiving a second request for a second real-time communication session;
upon receiving the second request, determining whether a second data transmission session over the NR connection is active;
when the second data transmission session is active, reconfiguring the second data transmission session to send data over the LTE connection.

16. The non-transitory computer-readable medium of claim 15 , wherein the reconfiguring includes:
reconfiguring the second data transmission session a single time upon determining whether the second data transmission session over the NR connection is active; and
releasing the NR connection.

17. The non-transitory computer-readable medium of claim 15 , wherein the operations further comprise, following completion of the first real-time communication session, reconfiguring the first data transmission session to utilize the NR connection.

18. The non-transitory computer-readable medium of claim 15 , wherein the operations further comprise, when the first real-time communication session is not established, utilizing the NR connection to service the first request or establishing the NR connection to service the first request.

19. The non-transitory computer-readable medium of claim 15 , wherein the operations further comprise establishing the second real-time communication session after performing the reconfiguring.

Assignees

• T Mobile Usa Inc

Inventors

• Abdel Shahid Wafik
• Kwok Ming Shan

Classifications

• H04W76/16 Primary

  Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer · CPC title

• H04W88/10

  adapted for operation in multiple networks, e.g. multi-mode access points · CPC title

• H04W76/22

  Manipulation of transport tunnels · CPC title

• H04W76/34

  Selective release of ongoing connections · CPC title

• C07C2/32

  as complexes, e.g. acetyl-acetonates {(complexes of salts of acids of halogen C07C2/20)} · CPC title