Configuring signaling radio bearer information in a user equipment protocol stack

1. A method comprising:

receiving an instruction to generate a signaling radio bearer configuration information element (IE) that includes configuration information for a pre-selected number of signaling radio bearers;

generating the signaling radio bearer configuration IE;

determining whether duplicate configuration information is included in the signaling radio bearer configuration IE;

determining which signaling radio bearers have been previously configured on a user equipment (UE); and

ensuring the signaling radio bearer configuration IE includes configuration information for all remaining necessary signaling radio bearers;

transmitting the signaling radio bearer configuration information element from a radio access network to the user equipment device for use in configuring the signaling radio bearers in the user equipment device.

2. The method of claim 1 , wherein the configuration information for each signaling radio bearer is identified by a radio bearer identity information element (IE).

3. The method of claim 1 , wherein the signaling radio bearer configuration IE is a Signaling Radio Bearer Information To Setup List, which is transmitted to the user equipment device in an RRC Connection Setup Message.

4. The method of claim 1 , wherein the wireless network is a third generation (3G) wireless network.

5. The method of claim 4 , wherein the wireless network includes a Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (UTRAN).

6. The method of claim 5 , wherein the signaling radio bearer configuration IE is generated by the UTRAN and is transmitted from the UTRAN to the user equipment device.

7. The method of claim 6 , wherein the signaling radio bearers includes a first signaling radio bearer (SRB 1 ) that is used for all messages transmitted on a dedicated control channel (DCCH) when using radio link control (RLC) unacknowledged mode (RLC-UM), a second signaling radio bearer (SRB 2 ) that is used for all messages transmitted on the DCCH when using RLC acknowledged mode except for radio resource control (RRC) messages carrying higher layer signaling, and a third signaling radio bearer (SRB 3 ) that is used for RRC messages carrying higher layer signaling and sent on the DCCH in RLC acknowledged mode.

8. The method of claim 6 , wherein the configuration information includes an RLC Info information element and a RB Mapping information element.

9. The method of claim 1 , further comprising:

selecting default configuration values for one or more signaling radio bearers without configuration information.

10. The method of claim 1 further comprising:

when the signaling radio bearer configuration IE does not include configuration information for all necessary signaling radio bearers, selecting default configuration values for one or more signaling radio bearers; and

configuring the one or more signaling radio bearers.

11. A device comprising:

a processor configured to receive an instruction to generate a signaling radio bearer configuration information element (IE) that includes configuration information for a pre-selected number of signaling radio bearers, generate the signaling radio bearer configuration IE, determine whether duplicate configuration information is included in the signaling radio bearer configuration IE, determine which signaling radio bearers have been previously configured on a user equipment (UE), and ensuring the signaling radio bearer configuration IE includes configuration information for all remaining necessary signaling radio bearers, and transmit the signaling radio bearer configuration information element from a radio access network to the user equipment device for use in configuring the signaling radio bearers in the user equipment device.

12. The device of claim 11 wherein the processor is further configured to, when the signaling radio bearer configuration IE includes configuration information for all necessary signaling radio bearers, configure all the signaling radio bearers.

13. The device of claim 11 wherein the processor is further configured to, when the signaling radio bearer configuration IE does not include configuration information for all necessary signaling radio bearers, select default configuration values for one or more signaling radio bearers, and configure the one or more signaling radio bearers.

14. A non-transitory medium storing instructions which, when executed by a processor, implement a method comprising:

receiving an instruction to generate a signaling radio bearer configuration information element (IE) that includes configuration information for a pre-selected number of signaling radio bearers;

generating the signaling radio bearer configuration IE;

determining whether duplicate configuration information is included in the signaling radio bearer configuration IE;

determining which signaling radio bearers have been previously configured on a user equipment (UE); and

ensuring the signaling radio bearer configuration IE includes configuration information for all remaining necessary signaling radio bearers;

transmitting the signaling radio bearer configuration information element from a radio access network to the user equipment device for use in configuring the signaling radio bearers in the user equipment device.

15. The non-transitory medium of claim 14 wherein the method further comprises:

when the signaling radio bearer configuration IE includes configuration information for all necessary signaling radio bearers, configuring all the signaling radio bearers.

16. The non-transitory medium of claim 14 wherein the method further comprises:

when the signaling radio bearer configuration IE does not include configuration information for all necessary signaling radio bearers, selecting default configuration values for one or more signaling radio bearers; and

configuring the one or more signaling radio bearers.