Method and apparatus for detecting and measuring for Home Node-Bs

• US 8,996,015 B2
• Filed: 12/13/2013
• Issued: 03/31/2015
• Est. Priority Date: 06/19/2009
• Status: Active Grant

• Current Assignee: InterDigital Patent Holdings, Inc. (InterDigital, Inc.)
• Original Assignee: InterDigital Patent Holdings, Inc. (InterDigital, Inc.)
• Inventors: Pani, Diana, Marinier, Paul, Gomes, Sylvie
• Primary Examiner(s): Tran, Tuan A
• Application Number:
  US14/106,077
• Publication Number:
  US 20140099948A1
• Time in Patent Office: 473 Days
• Field of Search: 455/435.1, 455/435.2, 455436-440, 455/442, 455/443, 455/456.1, 455/456.6, 455/67.11, 455/67.13, 455/67.15, 455/68, 455/69, 455/552.1, 455/553.1, 370328-338
• US Class Current: 455/440
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 36/0085 Hand-off measurements
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 48/20 Selecting an access point
• CPC Class Codes: H04W 8/005 Discovery of network devices, e.g. terminals
• CPC Class Codes: H04W 84/045 using private Base Stations, e.g. femto Base Stations, home Node B

Abstract

Methods and apparatus are disclosed for a wireless transmit/receive unit (WTRU) to detect and perform measurements with respect to Home Node-Bs (HNB) and Home evolved Node-Bs (H(e)NB) (collectively “HNB”). The methods may include generating and transmitting a request for a measurement configuration that may include gap allocations to detect and measure a primary scrambling code or a physical cell identity of a target HNB for at least one frequency or radio access technology (RAT). The request may be in response to the WTRU entering a HNB cell for which the WTRU has stored fingerprint information and whose closed subscriber group ID is in the WTRU'"'"'s whitelist. The network may configure the WTRU to measure the requested frequency or RAT in response to the proximity report/request. Methods are described for releasing the measurement configuration.

Claims

1. A method performed by a network entity, the method comprising:

receiving an indication from a wireless transmit/receive unit (WTRU) that is configured to detect, based on fingerprint information, that the WTRU has entered into a proximity of a home Node-B or home (evolved) Node-B (HNB) cell whose closed subscriber group (CSG) ID is in a whitelist of the WTRU, wherein the indication includes a frequency of the HNB cell and a Radio Access Technology (RAT) of the HNB cell;

transmitting a measurement configuration message to the WTRU to perform measurements on the HNB cell.

2. The method of claim 1, wherein the measurement configuration message enables the WTRU to detect one of a primary scrambling code (PSC) or a physical cell identity (PCI) of the HNB cell on the frequency and the RAT.

3. The method of claim 2, wherein the measurement configuration message indicates to the WTRU to measure the frequency or the RAT with one of a compressed mode or measurement gap.

4. The method of claim 1, wherein the measurement configuration message comprises one of an intra-frequency measurement, inter-frequency measurement or inter-RAT measurement.

5. The method of claim 1, wherein the indication indicates a cell identity of the HNB cell that triggered the indication.

6. The method of claim 1, further comprising receiving, from the WTRU, an indication of support of HNB cell detection.

7. The method of claim 1, further comprising transmitting a configuration for the RAT to the WTRU, wherein the configuration enables proximity detection and sending/receiving of reports in response to proximity detections on a condition that the WTRU enters or exits the proximity of the HNB cell.

8. The method of claim 1, further comprising receiving a notification from the WTRU that the WTRU is exiting the proximity of the HNB cell whose CSG ID is in the whitelist of the WTRU.

9. The method of claim 8, further comprising transmitting a configuration removing a measurement configuration.

10. The method of claim 1, wherein the indication is not received from the WTRU more than a certain number of times during a certain period of time.

11. The method of claim 1, wherein the network entity is a base station.

12. A network entity, comprising:

a processor;

a receiver in communication with the processor;

the processor and receiver configured to receive an indication from a wireless transmit/receive unit (WTRU) that is configured to detect, based on fingerprint information, that the WTRU has entered into a proximity of a home Node-B or home (evolved) Node-B (HNB) cell whose closed subscriber group (CSG) ID is in a whitelist of the WTRU, wherein the indication includes a frequency of the HNB cell and a Radio Access Technology (RAT) of the HNB cell;

a transmitter in communication with the processor;

the transmitter configured transmit a measurement configuration message to the WTRU to perform measurements on the HNB cell.

13. The network entity of claim 12, wherein the measurement configuration message enables the WTRU to detect one of a primary scrambling code (PSC) or a physical cell identity (PCI) of the HNB cell on the frequency and the RAT.

14. The network entity of claim 13, wherein the measurement configuration message indicates to the WTRU to measure the frequency or the RAT with one of a compressed mode or measurement gap.

15. The network entity of claim 12, wherein the measurement configuration message comprises one of an intra-frequency measurement, inter-frequency measurement or inter-RAT measurement.

16. The network entity of claim 12, wherein the indication indicates a cell identity of the HNB cell that triggered the indication.

17. The network entity of claim 12, wherein the receiver is further configured to receive, from the WTRU, an indication of support of HNB cell detection.

18. The network entity of claim 12, wherein the transmitter is further configured to transmit a configuration for the RAT to the WTRU, wherein the configuration enables proximity detection and sending/receiving of reports in response to proximity detections on a condition that the WTRU enters or exits the proximity of the HNB cell.

19. The network entity of claim 12, wherein the receiver is further configured to receive a notification from the WTRU that the WTRU is exiting the proximity of the HNB cell whose CSG ID is in the whitelist of the WTRU.

20. The network entity of claim 19, wherein the transmitter is further configured to transmit a configuration removing a measurement configuration.

21. The network entity of claim 12, wherein the indication is not received from the WTRU more than a certain number of times during a certain period of time.

22. The network entity of claim 12, wherein the network entity is a base station.