Data-capable network prioritization with reject code handling

• US 9,326,227 B2
• Filed: 02/12/2010
• Issued: 04/26/2016
• Est. Priority Date: 11/12/2003
• Status: Active Grant

• Current Assignee: Malikie Innovations Limited (Key Patent Innovations Limited)
• Original Assignee: Blackberry Limited
• Inventors: Gunaratnam, Jayasri, Naqvi, Noushad, Taylor, Bryan, Swann, Craig Ian Haight, Hind, Hugh, Nguyen, Bao Quoc, Phipps, Darcy Richard
• Primary Examiner(s): NGUYEN, STEVEN H D
• Application Number:
  US12/704,699
• Publication Number:
  US 20100203888A1
• Time in Patent Office: 2,265 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: H04L 69/40 for recovering from a failure of a protocol instance or entity, e.g. service redundancy protocols, protocol state redundancy or protocol service redirection management of faults, events, alarms or notifications in data switching networks H04L41/06
• CPC Class Codes: H04W 48/18 Selecting a network or a communication service
• CPC Class Codes: H04W 76/18 Management of setup rejection or failure
• CPC Class Codes: H04W 80/04 Network layer protocols, e.g. mobile IP [Internet Protocol]

Abstract

Reject code handling is utilized for a more time-efficient selection of data-capable networks. One illustrative method for use in selecting a wireless communication network for communications involves the steps of selecting a first wireless network available for communications with the mobile station; causing a request for data connectivity to be transmitted to the first wireless network selected; if a rejection is received from the first wireless network in response to the request for data connectivity: reattempting the request for data connectivity to the first wireless network at least one time; selecting a second wireless network available for communications with the mobile station after the request for data connectivity to the first wireless network is reattempted the at least one time without success; and selecting the second wireless network available for communications with the mobile station without reattempting the request for data connectivity to the first wireless network the at least one time if a reject code associated with the rejection indicates that data services are not allowed in the first network is received from the first wireless network in response to the request for data connectivity.

Claims

1. A method for use by a mobile station, the method comprising:

storing a list of wireless networks which include those having unavailable data connectivity;

selecting at least a first public land mobile network (PLMN) that is not included in the list of wireless networks;

performing an attach for combined voice and data services to the first PLMN, wherein the performing the attach comprises attempting registration of the mobile station with the first PLMN;

receiving an attach reject from the first PLMN in response to the performing the attach having a cause indicating data services are not allowed in the first PLMN; and

selecting a second PLMN not within the list of wireless networks and available for communications with the mobile station without reattempting the request for services to the first PLMN upon detecting that the data services are not allowed in the first PLMN.

2. The method of claim 1, wherein the cause has a third generation partnership project code having a value of 14 indicating that general packet radio service (GPRS) services are not allowed in the first PLMN.

3. The method of claim 1, further comprising performing a scanning operation to identify one or more PLMNs available in a coverage region of the mobile station.

4. The method of claim 1, further comprising identifying one or more PLMNs available in a coverage region of the mobile station, wherein the first PLMN is selected from the one or more PLMNs identified.

5. The method of claim 1, wherein the first PLMN is selected using an automatic network selection procedure.

6. The method of claim 1, wherein the second PLMN is selected using an automatic network selection procedure.

7. The method of claim 1, further comprising storing the first PLMN in the list of wireless networks which include those having unavailable data connectivity.

8. The method of claim 1, further comprising:

reattempting the performing of the attach to the first PLMN one or more times if a cause different from the cause associated with the rejection indicating that data services are not allowed in the first PLMN is received from the first PLMN in response to performing the attach.

9. The method of claim 1, wherein the performing the attach further comprises sending an attach request.

10. The method of claim 1, wherein the performing the attach further comprises providing for availability of the mobile station.

11. A mobile station, comprising:

one or more processors;

memory coupled to the one or more processors;

a radio frequency (RF) transceiver coupled to the one or more processors;

the one or more processors being configured to;

store a list of wireless networks which include those having unavailable data connectivity;

select at least a first public land mobile network (PLMN) that is not included in the list of wireless networks;

perform an attach for combined voice and data services to the first PLMN, wherein the performing the attach comprises attempting registration of the mobile station with the first PLMN;

receive an attach reject from the first PLMN in response to performing the attach, the attach reject having a cause indicating data services are not allowed in the first PLMN; and

select a second PLMN not within the list of wireless networks and available for communications with the mobile station without reattempting the request for services to the first PLMN upon detecting that the data services are not allowed in the first PLMN.

12. The mobile station of claim 11, wherein the cause has a third generation partnership project code having a value of 14 indicating that general packet radio service (GPRS) services are not allowed in the first PLMN.

13. The mobile station of claim 11, wherein the one or more processors are further configured to perform a scanning operation to identify one or more PLMNs available in a coverage region of the mobile station.

14. The mobile station of claim 11, wherein the one or more processors are further configured to identify one or more PLMNs available in a coverage region of the mobile station, wherein the first PLMN is selected from the one or more PLMNs identified.

15. The mobile station of claim 11, wherein the one or more processors are further configured to select the first PLMN using an automatic network selection procedure.

16. The mobile station of claim 11, wherein the one or more processors are further configured to select the second PLMN using an automatic network selection procedure.

17. The mobile station of claim 11, wherein the one or more processors are further configured to store the first PLMN in the list of wireless networks which include those having unavailable data connectivity.

18. The mobile station of claim 11, wherein the one or more processors are further configured to reattempt the performing of the attach to the first PLMN one or more times if a cause different from the cause associated with the rejection indicating that data services are not allowed in the first PLMN is received from the first PLMN in response to performing the attach.

19. A communication system, comprising:

a plurality of public land mobile networks (PLMNs);

one or more mobile stations configured to communicate in the PLMNs;

each mobile station being configured to;

store a list of wireless networks which include those having unavailable data connectivity;

select at least a first public land mobile network (PLMN) that is not included in the list of wireless networks;

perform an attach for combined voice and data services to the first PLMN, wherein the performing the attach comprises attempting registration of the mobile station with the first PLMN;

receive an attach reject from the first PLMN in response to perform the attach, the attach reject having a cause indicating data services are not allowed in the first PLMN; and

select a second PLMN not within the list of wireless networks and available for communications with the mobile station without reattempting the request for services to the first PLMN upon detecting that the data services are not allowed in the first PLMN.

20. The communication system of claim 19, wherein the cause has a third generation partnership project code having a value of 14 indicating that general packet radio service (GPRS) services are not allowed in the first PLMN.

21. The communication system of claim 19, wherein each mobile station is further configured to perform a scanning operation to identify one or more PLMNs available in a coverage region of the mobile station.

22. The communication system of claim 19, wherein each mobile station is further configured to identify one or more PLMNs available in a coverage region of the mobile station, wherein the first PLMN is selected from the one or more PLMNs identified.

23. The communication system of claim 19, each mobile station is further configured to select the first PLMN using an automatic network selection procedure.

24. The communication system of claim 19, each mobile station is further configured to select the second PLMN using an automatic network selection procedure.

25. The communication system of claim 19, each mobile station is further configured to store the first PLMN in the list of wireless networks which include those having unavailable data connectivity.