Method of handling system information reception and related communication device

1. A method of handling system information reception for a mobile device capable of multiple connections in a wireless communication system, the method comprising:

acquiring system information of at least an additional cell when a radio resource control (RRC) message indicating connection establishment to the additional cells is received from a first cell having at least a connection with the mobile device, wherein the acquired system information includes geographical information; and

skipping a tracking area update, when the additional cell whose system information is acquired is in a tracking area different from a tracking area of the first cell and the RRC message does not indicate to the mobile device to apply the geographical information.

2. The method of claim 1 further comprising:

initiating establishment of at least a connection to one of the cells when a valid version of the system information of the cell is acquired, wherein the valid version of the system information of the cell includes a MasterInformationBlock (MIB), a SystemInformationBlockType1 (SIB1), and a SystemInformationBlockType2 (SIB2).

3. The method of claim 1 further comprising:

performing the tracking area update when the RRC message or a second RRC message indicates to the mobile device to forward the geographical information in the acquired system information of the additional cell and the additional cell is in a tracking area different from the first cell, wherein the geographical information in the acquired system information of the cell is forwarded to an upper layer of a RRC layer of the mobile device via the tracking area update.

4. The method of claim 3 , wherein the geographical information comprises at least one of a tracking area code and a public land mobile network (PLMN) identity list.

5. The method of claim 1 , wherein the acquired system information includes non cell specific information, and cell specific information for cell connection or measurement, wherein the non cell specific information includes at least one of a Earthquake and Tsunami Warning System (ETWS) message, a Public Land Mobile Network (PLMN) identity list, a tracking area code and a value of a timer T311.

6. The method of claim 5 further comprising:

applying the cell specific information of the acquired system information.

7. The method of claim 5 further comprising:

when the RRC message indicates that one of the additional cells or the first cell whose system information is acquired is a serving cell, determining the indicated cell as the serving cell of the mobile device; and

applying the non cell specific information of the acquired system information of the serving cell.

8. The method of claim 7 further comprising applying the non cell specific information only for configuration associated with the serving cell.

9. A communication device of a wireless communication system for handling system information reception, the communication device capable of multiple connections comprising:

means for establishing at least a connection to a first cell;

means for acquiring system information of at least an additional cell when a radio resource control (RRC) message indicating connection establishment to the additional cells is received from the first cell, wherein the acquired system information includes geographical information; and

means for skipping a tracking area update, when the additional cell whose system information is acquired is in a tracking area different from a tracking area of the first cell and the RRC message does not indicate to the mobile device to apply the geographical information.

10. The communication device of claim 9 further comprising:

means for initiating establishment of at least a connection to one of the cells when a valid version of the system information of the cell is acquired, wherein the valid version of the system information of the cell includes a MasterInformationBlock (MIB), a SystemInformationBlockType1 (SIB1), and a SystemInformationBlockType2 (SIB2).

11. The communication device of claim 9 further comprising:

means for performing the tracking area update when the RRC message or second RRC message indicates to the mobile device to forward the geographical information in the acquired system information of the additional cell and the additional cell is in a tracking area different from the first cell, wherein the geographical information in the acquired system information of the cell is forwarded to an upper layer of a RRC layer of the mobile device via the tracking area update.

12. The communication device of claim 11 , wherein the geographical information comprises at least one of a tracking area code and a public land mobile network (PLMN) identity list.

13. The communication device of claim 12 further comprising:

when the RRC message indicates that one of the additional cells or the first cell whose system information is acquired is a serving cell, means for determining the indicated cell as the serving cell of the mobile device; and

means for applying the non cell specific information of the acquired system information of the serving cell.

14. The communication device of claim 13 further comprising means for applying the non cell specific information only for configuration associated with the serving cell.

15. The communication device of claim 9 , wherein the acquired system information includes non cell specific information, and cell specific information for cell connection or measurement, wherein the non cell specific information includes at least one of a Earthquake and Tsunami Warning System (ETWS) message, a Public Land Mobile Network (PLMN) identity list, a tracking area code and a value of a timer T311.

16. The communication device of claim 15 further comprising:

means for applying the cell specific information of the acquired system information.