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

• US 8,634,836 B2
• Filed: 06/18/2010
• Issued: 01/21/2014
• 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:
  US12/818,474
• Publication Number:
  US 20100323633A1
• Time in Patent Office: 1,313 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 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 a vicinity of a HNB cell whose closed subscriber group (CSG) ID is in a whitelist of the WTRU;

sending an indication to a network entity that the WTRU has entered into the vicinity of the HNB cell, wherein the indication includes a frequency of the HNB cell and a Radio Access Technology (RAT) 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 the frequency and the RAT.

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

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

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

7. The method of claim 1, further comprising signaling support of HNB cell detection on the frequency and the RAT.

8. The method of claim 1, further comprising receiving a configuration for the RAT, 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.

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

10. The method of claim 8, wherein the configuration is provided in a radio resource control (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 radio resource control (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 is not 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 a vicinity of a HNB cell whose closed subscriber group (CSG) ID is in a whitelist of the WTRU;

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, wherein the indication includes a frequency of the HNB cell and a Radio Access Technology (RAT) 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 the (RAT), 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.

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 the WTRU and to notify the network entity.

21. The WTRU of claim 17, 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 the frequency and the RAT.

22. The WTRU of claim 21, wherein the WTRU is configured with one of a compressed mode or measurement gap to measure the frequency or the RAT.

23. The WTRU of claim 17, wherein the measurement configuration message is one of an intra-frequency measurement, inter-frequency measurement or inter-RAT measurement.

24. The WTRU of claim 17, wherein the indication includes a cell identity of the HNB cell that triggered the indication.

25. The WTRU of claim 17, wherein the transmitter is further configured to signal support of HNB cell detection on the frequency and the RAT.

26. The WTRU of claim 19, wherein the configuration is provided in a form of a new measurement type.

27. The WTRU of claim 19, wherein the configuration is provided in a radio resource control (RRC) message.

28. The WTRU of claim 19, wherein the processor and receiver are further configured to start using the fingerprint information to detect proximity of the HNB cell on the configured RAT.

29. The WTRU of claim 20, wherein the receiver is further configured to receive a configuration removing a measurement configuration.

30. The WTRU of claim 20, wherein the transmitter is further configured to transmit a notification via one of a measurement report message or a new radio resource control (RRC) message.

31. The WTRU of claim 30, where the measurement report message and the new RRC message is also used for sending the indication to the network entity.

32. The WTRU of claim 17, wherein the processor and transmitter are further configured to send the indication no more than a certain number of times during a certain period of time.