METHOD AND DEVICE FOR MEASUREMENT IN WIRELESS COMMUNICATION SYSTEM

• US 20140348015A1
• Filed: 12/12/2012
• Published: 11/27/2014
• Est. Priority Date: 12/12/2011
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Seo, Inkwon, Seo, Hanbyul
• Granted Patent: US 9,635,577 B2
• Time in Patent Office: Days
• US Class Current: 370/252
• CPC Class Codes: H04B 7/26 at least one of which is mobile
• CPC Class Codes: H04J 11/005 of intercell interference
• CPC Class Codes: H04J 2211/001 using small cells within macro cells, e.g. femto, pico or microcells
• 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 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 52/244 Interferences in heterogeneous networks, e.g. among macro and femto or pico cells or other sector / system interference [OSI]
• CPC Class Codes: H04W 72/542 using measured or perceived quality

Abstract

One embodiment of the present invention relates to a method for allowing a terminal to measure at least one or more transmission points among a first transmission point and a second transmission point, which are neighboring cells, in a wireless communication system, and the measurement method comprises the steps of: measuring a reference signal strength indicator (RSSI) in a predetermined resource of a subframe; and measuring reference signal received quality (RSRQ) from said RSSI and reference signal received power (RSRP), wherein said predetermined resource is associated with the setting of an almost blank subframe (ABS) of said first transmission point for said subframe.

Claims

1. A method for measuring at least one of first and second transmission points (TPs) serving as neighbor cells by a user equipment (UE) in a wireless communication system, comprising:

measuring Reference Signal Strength Indicator (RSSI) in a predetermined resource of a subframe; and

measuring a Reference Signal Received Quality (RSRQ) from the RSSI and Reference Signal Received Power (RSRP),

wherein the predetermined resource is associated with an almost blank subframe (ABS) configuration of the first TP regarding the subframe.

2. The method according to claim 1, wherein:

if the subframe relates to the ABS of the first TP, the predetermined resource is all orthogonal frequency division multiplexing (OFDM) symbols contained in the subframe, and the RSSI relates to the second TP.

3. The method according to claim 1, wherein:

if the subframe relates to a normal subframe of the first TP, the predetermined resource is all orthogonal frequency division multiplexing (OFDM) symbols contained in the subframe, and the RSSI relates to the first TP.

4. The method according to claim 1, wherein:

if the subframe relates to a normal subframe of the first TP, the predetermined resource is all orthogonal frequency division multiplexing (OFDM) symbols through which a cell-specific reference signal (RS) of the first TP is transmitted, and the RSSI relates to the first TP.

5. The method according to claim 1, wherein:

if the subframe relates to a normal subframe of the first TP, the predetermined resource is all OFDM symbols related to an antenna port through which a reference signal (RS) of the first TP is transmitted, and the RSSI relates to the first TP.

6. The method according to claim 5, wherein the reference signal (RS) is any one of a cell-specific RS, a demodulation reference signal (DMRS), and a channel status information reference signal (CSI-RS).

7. The method according to claim 5, further comprising:

receiving at least one measurement subframe pattern and measurement resource information corresponding to the at least one measurement subframe pattern from a third TP of a cell including the user equipment (UE),

wherein the subframe is contained in any one of the at least one measurement subframe pattern, and the predetermined resource is indicated by measurement resource information corresponding to the measurement subframe pattern including the subframe.

8. The method according to claim 7, wherein the at least one measurement subframe pattern and the measurement resource information corresponding to the at least one measurement subframe pattern are decided by the third TP that has received an ABS configuration of the first TP from the first TP, on the basis of the ABS configuration of the first TP.

9. The method according to claim 8, wherein the ARS configuration of the first TP is at least one of the ABS pattern of the first TP and a normal subframe pattern.

10. The method according to claim 7, wherein the at least one measurement subframe pattern and the measurement resource information corresponding to the at least measurement subframe pattern are contained in a neighbor cell list.

11. The method according to claim 10, wherein the neighbor cell list serving as system information is broadcast from the third TP.

12. The method according to claim 1, wherein the first TP is a macro eNB (MeNB), and the second TP is a pico eNB (PeNB).

13. A user equipment (UE) configured to measure at least one of first and second TPs of a neighbor cell in a wireless communication system, comprising:

a reception (Rx) module;

a processor,

wherein the processor measures Reference Signal Strength Indicator (RSSI) in a predetermined resource of a subframe, and measures a Reference Signal Received Quality (RSRQ) from the RSSI and Reference Signal Received Power (RSRP),

where the predetermined resource is associated with an almost blank subframe (ABS) configuration of the first TP regarding the subframe.