Method for accessing a service unavailable through a network cell

Patent metadata

Field	Value
Publication number	US-9674734-B2
Application number	US-201615199017-A
Country	US
Kind code	B2
Filing date	Jun 30, 2016
Priority date	Jun 16, 2009
Publication date	Jun 6, 2017
Grant date	Jun 6, 2017

Abstract

In an access device associated with a first network cell, a method for enabling user equipment (UE) to obtain a service unavailable through the first network cell includes receiving a request for the UE to access the service, and identifying, in a message to the UE, a plurality of second network cells providing the service.

First claim

What is claimed is:

1. In an access device associated with a first network cell, a method for enabling user equipment (UE) to obtain a service unavailable through the first network cell, the method comprising:
receiving, from a UE, a first message including a request for the UE to access the service, wherein the service is a circuit-switched (CS) service; and
in response to the first message, transmitting a second message to the UE, wherein the second message identifies a plurality of second network cells providing the service, the second message includes system information of the plurality of second network cells, the system information identifies location areas of the plurality of second network cells, and the first network cell employs a different radio access technology (RAT) than the plurality of second network cells.

2. The method of claim 1 , wherein the service is circuit-switched voice.

3. The method of claim 1 , wherein the first network cell does not provide the service.

4. The method of claim 3 , wherein the request is a response to a paging message.

5. The method of claim 3 , wherein the second message directs the UE to connect to one of the plurality of second network cells.

6. The method of claim 3 , wherein the second message directs the UE to switch from a first radio access network associated with the first network cell to a second radio access network.

7. The method of claim 3 , wherein the second message directs the UE to release a connection with the access device.

8. In an evolved Node B (eNB) associated with a first network cell in an evolved universal terrestrial radio access network (E-UTRAN), a method for enabling user equipment (UE) to obtain a service not available through the first network cell, the method comprising:
connecting with the UE;
receiving, from a UE, a first message including a request for the UE to access the service, wherein the service is a circuit-switched (CS) service; and
in response to the first message, transmitting a second message to the UE, wherein the second message identifies a plurality of second network cells providing the service, the second message includes system information of the plurality of second network cells, the system information identifies location areas of the plurality of second network cells, and the first network cell employs a different radio access technology (RAT) than the plurality of second network cells.

9. The method of claim 8 , wherein the service is circuit-switched voice.

10. The method of claim 8 , wherein the first network cell does not provide the service.

11. The method of claim 10 , wherein the request is a response to a paging message.

12. The method of claim 10 , wherein the second message directs the UE to connect to one of the plurality of second network cells.

13. The method of claim 10 , wherein the second message directs the UE to switch from a first radio access network associated with the first network cell to a second radio access network.

14. The method of claim 10 , wherein the second message directs the UE to release a connection with the access device.

15. An access device associated with a first network cell for enabling user equipment (UE) to obtain a service unavailable through the first network cell, comprising:
at least one hardware processor;
a non-transitory computer-readable storage medium coupled to the at least one hardware processor and storing programming instructions for execution by the at least one hardware processor, wherein the programming instructions instruct the at least one hardware processor to:
receiving, from a UE, a first message including a request for the UE to access the service, wherein the service is a circuit-switched (CS) service; and
in response to the first message, transmitting a second message to the UE, wherein the second message identifies a plurality of second network cells providing the service, the second message includes system information of the plurality of second network cells, the system information identifies location areas of the plurality of second network cells, and the first network cell employs a different radio access technology (RAT) than the plurality of second network cells.

16. The access device of claim 15 , wherein the service is circuit-switched voice.

17. The access device of claim 15 , wherein the first network cell does not provide the service.

18. The access device of claim 17 , wherein the request is a response to a paging message.

19. The access device of claim 17 , wherein the second message directs the UE to connect to one of the plurality of second network cells.

20. The access device of claim 17 , wherein the second message directs the UE to switch from a first radio access network associated with the first network cell to a second radio access network.

21. The access device of claim 17 , wherein the second message directs the UE to release a connection with the access device.

Assignees

• Blackberry Ltd

Inventors

• Burbidge Richard Charles
• Suzuki Takashi
• Hole David Philip
• Dwyer Johanna Lisa
• Rayavarapu Venkata Ratnakar Rao
• Wijayanathan Maiyuran
• Mccann Stephen
• Earnshaw Andrew Mark
• Chin Chen Ho

Classifications

• H04W36/0085

  Hand-off measurements · CPC title

• H04W36/0061

  of neighbour cell information · CPC title

• H04W68/02

  Arrangements for increasing efficiency of notification or paging channel · CPC title

• H04W36/0016 Primary

  Hand-off preparation specially adapted for end-to-end data sessions · CPC title

• H04W84/042

  Public Land Mobile systems, e.g. cellular systems · CPC title