METHOD AND APPARATUS FOR DETECTING AND MEASURING FOR HOME NODE-BS

• US 20100323633A1
• Filed: 06/18/2010
• Published: 12/23/2010
• 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: Marinier, Paul, Pani, Diana, Gomes, Sylvie
• Granted Patent: US 8,634,836 B2
• Time in Patent Office: Days
• US Class Current: 455/67.14
• 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 of detecting a home Node-B or home (evolved) Node-B (HNB) implemented in a wireless transmit/receive unit (WTRU), comprising:

detecting, based on fingerprint information, that the WTRU has entered into the vicinity of a HNB cell whose closed subscriber group (CSG) ID is in the WTRU'"'"'s whitelist;

sending an indication to a network entity that the WTRU has entered into the vicinity of the HNB cell;

receiving a measurement configuration message; and

performing the measurements.

2. The method of claim 1, wherein the indication is sent to the network entity via one of a new measurement type in a measurement report message or as a new radio resource control (RRC) message.

3. The method of claim 1, wherein the measurement configuration message is used to detect one of a primary scrambling code (PSC) or a physical cell identity (PCI) of the HNB cell on a requested frequency and radio access technology (RAT).

4. The method of claim 3, wherein the WTRU is configured with one of a compressed mode or measurement gap to measure a frequency or radio access technology (RAT).

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

6. The method of claim 1, wherein the indication includes at least one of a frequency, a radio access technology, or a cell identity of the HNB cell that triggered the report.

7. The method of claim 1, further comprising signaling support of HNB cell detection on a frequency and radio access technology (RAT).

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

9. The method of claim 8, wherein the configuration is provided in the form of a new measurement type.

10. The method of claim 8, wherein the configuration is provided in a RRC message.

11. The method of claim 8, wherein the WTRU starts using the fingerprint information to detect proximity of the HNB cell on the configured RAT.

12. The method of claim 1, further comprising detecting that the WTRU is exiting the vicinity of the HNB cell whose CSG ID is in the whitelist of the WTRU and notifying the network entity.

13. The method of claim 12, further comprising receiving a configuration removing a measurement configuration.

14. The method of claim 12, wherein a notification is transmitted via one of a measurement report message or a new RRC message.

15. The method of claim 14, where the measurement report message and the new RRC message is also used for sending the indication to the network entity.

16. The method of claim 1, wherein the WTRU may not be allowed to send the indication more than a certain number of times during a certain period of time.

17. A wireless transmit/receive unit (WTRU) for detecting a home Node-B or home (evolved) Node-B (HNB), comprising:

a processor;

a receiver in communication with the processor;

the processor and receiver configured to detect, based on fingerprint information, that the WTRU has entered into the vicinity of a HNB cell whose closed subscriber group (CSG) ID is in the WTRU'"'"'s whitelist;

a transmitter in communication with the processor;

the transmitter configured to send an indication to a network entity that the WTRU has entered into the vicinity of the HNB cell;

the receiver configured to receive a measurement configuration message; and

the processor configured to perform the measurements.

18. The WTRU of claim 17, wherein the indication is sent to the network entity via one of a new measurement type in a measurement report message or as a new radio resource control (RRC) message.

19. The WTRU of claim 17, wherein the receiver is configured to receive a configuration for a radio access technology (RAT), wherein the configuration enables proximity detection and the sending/receiving of reports in response to proximity detections on a condition that the WTRU enters or exits the proximity of the HNB cell.

20. The WTRU of claim 17, the receiver and processor configured to detect that the WTRU is exiting the vicinity of the HNB cell whose CSG ID is in the whitelist of WTRU and notifying the network entity.