METHOD AND APPARATUS FOR MEASUREMENT FOR INTER-CELL INTERFERENCE COORDINATION IN RADIO COMMUNICATION SYSTEM

• US 20130033998A1
• Filed: 03/29/2011
• Published: 02/07/2013
• Est. Priority Date: 03/29/2010
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Seo, Inkwon, Seo, Hanbyul, Kim, Byounghoon, Kim, Kijun, Kim, Hakseong
• Granted Patent: US 9,161,236 B2
• Time in Patent Office: Days
• US Class Current: 370/252
• CPC Class Codes: H04J 11/0056 Inter-base station aspects
• CPC Class Codes: H04J 13/0062 Zadoff-Chu
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0073 Allocation arrangements that take into account other cell interferences for intercell interference mitigation or co-ordination in orthogonal multiplex systems H04J11/005
• CPC Class Codes: H04L 5/0091 Signaling for the administration of the divided path
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 24/08 Testing, supervising or monitoring using real traffic
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 28/04 Error control
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 72/044 based on the type of the allocated resource
• CPC Class Codes: H04W 92/20 between access points

Abstract

A wireless communication system and, more specifically, a measurement method and apparatus for inter-cell interference coordination in a wireless communication system are disclosed. Herein, a method for supporting measurement of a User Equipment (UE) by a first base station in a wireless communication system includes the steps of acquiring information of downlink subframe configuration of a second base station, determining measurement objects of downlink resource of the first base station based on the downlink subframe configuration of the second base station; transmitting information of the measurement objects to the UE, and receiving measurement result for the measurement objects from the UE.

Claims

1. A method for supporting measurement of a User Equipment (UE) by a first base station in a wireless communication system, the method comprising:

acquiring information of downlink subframe configuration of a second base station;

determining measurement objects of downlink resource of the first base station based on the downlink subframe configuration of the second base station;

transmitting information of the measurement objects to the UE; and

receiving measurement result for the measurement objects from the UE.

2. The method according to claim 1,

wherein the measurement objects include downlink resource of the first base station not interfered by the second base station.

3. The method according to claim 1,

wherein the measurement objects include downlink resource of the first base station constantly interfered by the second base station.

4. The method according to claim 1,

wherein the information of the measurement objects restrict a measurement region for the UE by one or a combination of downlink subframe, control region, data region, slot, OFDM symbol, resource block and antenna port of the first base station.

5. The method according to claim 1,

wherein the information of the measurement objects is transmitted through RRC(Radio Resource Control) signaling.

6. The method according to claim 1,

wherein the downlink subframe configuration of the second base station include configuration of each of one or more downlink subframe of the second base station as normal subframe, ABS (Almost Blank Subframe), MBSFN (Multicast/Broadcast over Single Frequency Network) subframe or ABS-with-MBSFN.

7. The method according to claim 1,

wherein the downlink subframe configuration of the second base station include offset of a boundary of downlink subframe of the first base station and a boundary of downlink subframe of the second base station.

8. The method according to claim 1,

wherein the measurement result includes measurement result for at least one of RLM (Radio Link Monitoring) measurement, CSI (Channel State Information) measurement, interference measurement and RRM (Radio Resource Management) measurement.

9. The method according to claim 8,

wherein the measurement result for RRM measurement includes RSRQ (Reference Signal Received Quality), the RSRQ is measured by RSRP (Reference Signal Received Power) and RSSI (Received Signal Strength Indicator),

wherein the information of the measurement objects for one or more of RSRQ, RSRP and RSSI restrict a measurement region for the UE by all OFDM symbols in at least one downlink subframe of the first base station.

10. A method for performing measurement by a User Equipment (UE) in a wireless communication system, the method comprising:

receiving information of measurement objects from a first base station;

performing measurement for the measurement objects; and

transmitting measurement result to the first base station,

wherein the measurement objects are determined from downlink resource of the first base station based on a downlink subframe configuration of a second base station.

11. The method according to claim 10,

wherein the measurement objects include downlink resource of the first base station not interfered by the second base station.

12. The method according to claim 10,

wherein the measurement objects include downlink resource of the first base station constantly interfered by the second base station.

13. The method according to claim 10,

wherein the information of the measurement objects restrict a measurement region for the UE by one or a combination of downlink subframe, control region, data region, slot, OFDM symbol, resource block and antenna port of the first base station.

14. The method according to claim 10,

wherein the information of the measurement objects is received through RRC (Radio Resource Control) signaling.

15. The method according to claim 10,

wherein the downlink subframe configuration of the second base station include configuration of each of one or more downlink subframe of the second base station as normal subframe, ABS (Almost Blank Subframe), MBSFN (Multicast/Broadcast over Single Frequency Network) subframe or ABS-with-MBSFN.

16. The method according to claim 10,

wherein the downlink subframe configuration of the second base station include offset of a boundary of downlink subframe of the first base station and a boundary of downlink subframe of the second base station.

17. The method according to claim 10,

wherein the measurement result includes measurement result for at least one of RLM (Radio Link Monitoring) measurement, CSI (Channel State Information) measurement, interference measurement and RRM (Radio Resource Management) measurement.

18. The method according to claim 17,

wherein the measurement result for RRM measurement includes RSRQ (Reference Signal Received Quality), the RSRQ is measured by RSRP (Reference Signal Received Power) and RSSI (Received Signal Strength Indicator),

wherein the information of the measurement objects for one or more of RSRQ, RSRP and RSSI restrict a measurement region for the UE by all OFDM symbols in at least one downlink subframe of the first base station.

19. An apparatus for supporting measurement of a User Equipment (UE), the apparatus comprising:

a reception module for receiving uplink signals from the UE;

a transmission module for transmitting downlink signals to the UE; and

a processor for controlling transmission and reception of a first base station through the transmission module and the reception module,

wherein the processor is configured to;

acquire information of downlink subframe configuration of a second base station;

determine measurement objects of downlink resource of the first base station based on the downlink subframe configuration of the second base station;

transmit information of the measurement objects to the UE; and

receive measurement result for the measurement objects from the UE.

20. A User Equipment (UE) for performing measurement, the UE comprising:

a reception module for receiving downlink signals from a first base station;

a transmission module for transmitting uplink signals to the first base station; and

a processor for controlling the UE including the transmission module and the reception module,

wherein the processor is configured to;

receive information of measurement objects from a first base station;

perform measurement for the measurement objects; and

transmit measurement result to the first base station,

wherein the measurement objects are determined from downlink resource of the first base station based on a downlink subframe configuration of a second base station.