METHOD AND APPARATUS FOR ADDING CSG IDENTITIES TO A WHITE LIST IN CONNECTED MODE

• US 20160373974A1
• Filed: 09/02/2016
• Published: 12/22/2016
• Est. Priority Date: 01/08/2010
• Status: Active Grant

• Current Assignee: InterDigital Patent Holdings, Inc. (InterDigital, Inc.)
• Original Assignee: InterDigital Patent Holdings, Inc. (InterDigital, Inc.)
• Inventors: Gomes, Sylvie, Pani, Diana, Comsa, Virgil, Watfa, Mahmoud, Olvera-Hernandez, Ulises, Adjakple, Pascal M., Mladin, Catalina M.
• Granted Patent: US 10,165,481 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 36/0061 of neighbour cell information
• CPC Class Codes: H04W 36/36 by user or terminal equipment
• CPC Class Codes: H04W 36/362 Conditional handover

Abstract

A serving eNodeB and a method thereof are provided. The serving eNodeB includes a receiver configured to receive, from a wireless transmit/receive unit (WTRU), a first measurement report including a physical layer cell identity (PCI) of a target closed subscriber group (CSG) cell detected by the WTRU, a transmitter configured to, in response to the received first measurement report, to transmit a message to the WTRU indicating that the WTRU is to read system information (SI) of the target CSG cell, and a processor. The receiver is further configured to, in response to a transmission of the message, receive a second measurement report for the target CSG cell including information read from the SI, and the processor is configured to, in response to receipt of the second measurement report, add the target CSG cell to a cell list and initiate a handover of the WTRU to the target CSG cell.

Claims

1. A serving eNodeB configured to serve a wireless transmit/receive unit (WTRU), the serving eNodeB comprising:

a receiver configured to receive, from the WTRU, a first measurement report including a physical layer cell identity (PCI) of a target closed subscriber group (CSG) cell detected by the WTRU;

a transmitter configured to, in response to the received first measurement report, transmit a message to the WTRU indicating that the WTRU is to read system information (SI) of the target CSG cell;

the receiver further configured to, in response to a transmission of the message, receive a second measurement report for the target CSG cell including information read from the SI; and

a processor configured to, in response to the received second measurement report, add the target CSG cell to a cell list and initiate a handover of the WTRU to the target CSG cell.

2. The serving eNodeB of claim 1, wherein the first measurement report includes information from a scan of all frequencies in supported bands.

3. The serving eNodeB of claim 1, wherein the first measurement report includes information from a scan of CSG dedicated frequencies.

4. The serving eNodeB of claim 1, wherein the first measurement report includes information from a scan of frequencies provided to the WTRU by the serving eNodeB.

5. The serving eNodeB of claim 1, wherein the first measurement report indicates that the PCI is an unvisited PCI.

6. The serving eNodeB of claim 1, wherein the read SI is for a highest ranked CSG cell.

7. The serving eNodeB of claim 1, wherein the read SI is for a best quality CSG cell.

8. The serving eNodeB of claim 1, wherein the second measurement report is included in a radio resource control (RRC) message.

9. The serving eNodeB of claim 1, wherein the processor is cooperatively coupled to the receiver and the transmitter.

10. The serving eNodeB of claim 1, wherein the processor is configured to add the a CSG ID of the target CSG cell to the cell list.

11. A method implemented in a serving eNodeB configured to serve a wireless transmit/receive unit (WTRU), the method comprising:

receiving, from the WTRU, a first measurement report including a physical layer cell identity (PCI) of a target closed subscriber group (CSG) cell detected by the WTRU;

transmitting, in response to the received first measurement report, a message to the WTRU indicating that the WTRU is to read system information (SI) of the target CSG cell;

receiving, in response to a transmission of the message, a second measurement report for the target CSG cell including information read from the SI;

adding, in response to the received second measurement report, the target CSG cell to a cell list; and

initiating a handover of the WTRU to the target CSG cell.

12. The method of claim 11, wherein the first measurement report includes information from a scan of all frequencies in supported bands.

13. The method of claim 11, wherein the first measurement report includes information from a scan of CSG dedicated frequencies.

14. The method of claim 11, wherein the first measurement report includes information from a scan of frequencies provided to the WTRU by the serving eNodeB.

15. The method of claim 11, wherein the first measurement report indicates that the PCI is an unvisited PCI.

16. The method of claim 11, wherein the read SI is for a highest ranked CSG cell.

17. The method of claim 11, wherein the read SI is for a best quality CSG cell.

18. The method of claim 11, wherein the second measurement report is included in a radio resource control (RRC) message.

19. The method of claim 11, wherein adding the target CSG cell to the cell list includes adding a CSG ID of the target CSG cell to the cell list.