Closed Subscriber Group measurement reporting

• US 9,380,449 B2
• Filed: 03/29/2012
• Issued: 06/28/2016
• Est. Priority Date: 10/02/2009
• Status: Active Grant

• Current Assignee: Malikie Innovations Limited (Key Patent Innovations Limited)
• Original Assignee: Blackberry Limited
• Inventors: Kim, Young Ae, Fong, Mo-Han, Hole, David Philip, Wirtanen, Jeffrey William, Dwyer, Johanna Lisa
• Primary Examiner(s): GESESSE, TILAHUN
• Application Number:
  US13/434,355
• Publication Number:
  US 20120244903A1
• Time in Patent Office: 1,552 Days
• Field of Search: 455/436, 455/434, 455/517, 455/525, 455/524
• US Class Current: 1/1
• CPC Class Codes: H04L 43/16 Threshold monitoring
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 48/02 Access restriction performed under specific conditions
• CPC Class Codes: H04W 8/20 Transfer of user or subscriber data
• CPC Class Codes: H04W 84/045 using private Base Stations, e.g. femto Base Stations, home Node B
• CPC Class Codes: H04W 88/02 Terminal devices

Abstract

A system and method for mobility in a wireless network are presented. A user equipment with a processor configured to inform a network component of a closed subscriber group (CSG) capability of the UE. The processor informs the network component during capability exchange signaling. The processor informs the network component whether the UE is capable of detecting a CSG cell and whether the UE is a member of at least one CSG.

Claims

1. A user equipment (UE) comprising:

a memory storing an allowed closed subscriber group (CSG) list;

a transceiver configured to receive a measurement reporting criteria from a network component, the measurement reporting criteria specifying a signal strength criterion including a reference signal received power (RSRP) threshold, a reference signal received quality (RSRQ) threshold, or both; and

a processor configured to;

determine if a CSG cell is included in the allowed CSG list;

determine if at least one of the RSRP threshold and the RSRQ threshold is met with respect to the CSG cell; and

only upon determining that the CSG cell is included in the allowed CSG list and that at least one of the RSRP threshold and the RSRQ threshold is met with respect to the CSG cell;

(i) generate a measurement report that includes measurement results of the CSG cell and (ii) cause the transceiver to send the measurement report to the network component.

2. The UE of claim 1, wherein the measurement reporting criteria further specifies a maximum number of non-CSG cells that can be included in the measurement report.

3. The UE of claim 2, wherein the measurement report includes measurement results associated with said maximum number of non-CSG cells.

4. A network component comprising:

a processor configured to generate a measurement reporting criteria that specifies a signal strength criterion criteria including a reference signal received power (RSRP) threshold, a reference signal received quality (RSRQ) threshold, or both; and

a transceiver configured to send the measurement reporting to a user equipment (UE), the transceiver being further configured to send instructions configuring the UE to;

determine if a closed subscriber group (CSG) cell is included in the allowed CSG list;

determine if at least one of the RSRP threshold and the RSRQ threshold is met with respect to the CSG cell; and

only upon determining that the CSG cell is included in the allowed CSG list and that at least one of the RSRP threshold and the RSRQ threshold is met with respect to the CSG cell;

(i) generate a measurement report of the CSG cell and (ii) send the measurement report to the network component.

5. The network component of claim 4, wherein the measurement reporting criteria further specifies a maximum number of non-CSG cells that can be included in the measurement report.

6. The network component of claim 5, wherein a measurement report that is received by the transceiver includes measurement results associated with said maximum number of non-CSG cells.

7. A non-transitory computer-readable medium storing instructions which are configured to cause a network component to perform operations of a method, the non-transitory computer-readable medium comprising:

first instructions configured to cause a processor to generate a measurement reporting criteria that specifies a signal strength criterion including a reference signal received power (RSRP) threshold, a reference signal received quality (RSRQ) threshold, or both; and

second instructions configured to cause a transceiver to send the measurement reporting criteria to a user equipment (UE), the second instructions being further configured to configure the UE to;

determine if a closed subscriber group (CSG) cell is included in the allowed CSG list;

determine if at least one of the RSRP threshold and the RSRQ threshold is met with respect to the CSG cell; and

only upon determining that the CSG cell is included in the allowed CSG list and that at least one of the RSRP threshold and the RSRQ threshold is met with respect to the CSG cell;

(i) generate a measurement report of the CSG cell and (ii) send the measurement report to the network component.

8. The computer-readable medium of claim 7, wherein the measurement reporting criteria further specifies a maximum number of non-CSG cells that can be included in the measurement report.

9. The computer-readable medium of claim 8, wherein a measurement report that is received, relative to sending of the measurement reporting criteria, includes measurement results associated with said maximum number of non-CSG cells.