Extended redirect

Patent metadata

Field	Value
Publication number	US-2016100451-A1
Application number	US-201414891739-A
Country	US
Kind code	A1
Filing date	May 16, 2014
Priority date	May 17, 2013
Publication date	Apr 7, 2016
Grant date	—

Abstract

Disclosed herein is a method in a radio access network, RAN, node ( 315 ) and corresponding method in a core network node ( 302 ), for handling roaming rejection in a shared RAN ( 305 ), wherein the shared RAN is second CN ( 301 b ), the method comprising: forwarding ( 403 ), to a core network, CN, node ( 302 ) in the first CN ( 301 a ) sharing the RAN ( 305 ), a request message of a roaming wireless device ( 308 ); receiving ( 404 ) a reject message from the CN node, wherein the reject message comprises a cause of the rejection and an indicator indicating that the cause qualifies for redirection of the wireless device; determining ( 405 ), based on the indicator in the reject message, that the wireless device should be redirected to another CN node ( 304 ) in the second CN ( 301 b ) sharing the RAN ( 305 ); transmitting ( 406 ) the request message of the roaming wireless device ( 308 ) to the other CN node ( 304 ).

First claim

1 . A method in a core network (CN) node of a first CN for handling roaming rejections in a shared radio access network (RAN), wherein the shared RAN is shared amongst the first CN and at least a second CN, the method comprising:
receiving from a RAN node in the shared RAN a request message of a roaming wireless device; determining that the request should be rejected; determining a cause of the rejection; determining that the rejection should lead to a redirection of the wireless device ; creating an indicator indicating that the cause of the rejection should lead to a redirection of the request message of the wireless device; and transmitting a reject message to the RAN node, which reject message comprises the cause of the rejection and the indicator.

2 . The method of claim 1 , wherein: the request message is a RAU request or an attach request.

3 . The method of claim 1 , wherein: the cause of the rejection is a roaming restriction in the shared network.

4 . The method of claim 1 , wherein: the indicator is an information element.

5 . The method of claim 1 , wherein: the CN node is a MSC or SGSN.

6 . The method of claim 1 , wherein: the CN node forwards the request message to a HLR of the wireless device's home operator.

7 . The method of claim 1 , wherein: the CN node creates the indication by receiving a reject message comprising the cause from a HLR.

8 . A method in a radio access network (RAN) node for handling roaming rejections in a shared RAN, wherein the shared RAN is shared amongst a first core network (CN) and at least a second CN, the method comprising:
forwarding, to a CN node in the first CN sharing the RAN, a request message of a roaming wireless device: receiving a reject message from the CN node, wherein the reject message comprises a cause of the rejection and an indicator indicating that the cause qualifies for redirection of the wireless device; determining, based on the indicator in the reject message, that the wireless device should be redirected to another CN node in the second CN sharing the RAN; and transmitting the request message of the roaming wireless device to the other CN node.

9 . The method of claim 8 , wherein the RAN node is a RNC or a BSC.

10 . A core network (CN) node for handling roaming rejections in a shared radio access network (RAN), wherein the shared RAN is shared amongst a first CN and at least a second CN, and wherein the CN node is configured to operatively:
receive from a radio access network, RAN node in the shared RAN a request message of a roaming wireless device; determine that the request should be rejected; determine a cause of the rejection; determine that the rejection should lead to a redirection of the wireless device; create an indicator indicating that the cause of the rejection should lead to a redirection of the request message of the wireless device; and transmit a reject message to the RAN node, which reject message comprises the cause of the rejection and the indicator.

11 . The CN node of claim 10 , wherein:
the request message is a RAU request or an attach request.

12 . The CN node of claim 10 , wherein: the cause of the rejection is a roaming restriction in the shared network.

13 . The CN node of claim 10 , wherein: the indicator is an information element.

14 . The CN node of claim 10 , wherein: the CN node is a MSC or SGSN.

15 . The CN node of claim 10 , wherein: the CN node is configured to forward the request message to a HLR of the wireless device's home operator.

16 . The CN node of claim 10 , wherein: the CN node is configured to create the indication by receiving a reject message comprising the cause from a HLR.

17 . A radio access network (RAN) node for handling roaming rejections in a shared RAN, wherein the shared RAN is shared amongst a first core network (CN) and at least a second CN, and wherein the RAN node is configured to:
forward, to a CN in the first CN sharing the RAN, a request message of a roaming wireless device; receive a reject message from the CN node, wherein the reject message comprises a cause of the rejection and an indicator indicating that the cause qualifies for redirection of the wireless device; determining, based on the indicator in the reject message, that the wireless device should be redirected to another CN node in the second CN sharing the RAN; transmit the request message of the roaming wireless device to the other CN node.

18 . The RAN node of claim 17 , wherein the RAN node is an RNC or a BSC.

Assignees

• Ericsson Telefon Ab L M
• Ericsson Telefon Ab L M

Inventors

• Wass Mikael
• Ramle Peter
• Schliwa-Bertling Paul

Classifications

• H04W8/10

  between location register and external networks · CPC title

• H04W48/02 Primary

  Access restriction performed under specific conditions · CPC title

• H04W76/027 Primary

  Electricity · mapped topic

• H04W48/16 Primary

  Discovering, processing access restriction or access information · CPC title

• H04W48/18

  Selecting a network or a communication service · CPC title