METHOD AND APPARATUS FOR SUPPORTING NETWORK LISTENING IN WIRELESS COMMUNICATION SYSTEM

• US 20160315740A1
• Filed: 01/09/2015
• Published: 10/27/2016
• Est. Priority Date: 01/09/2014
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: YI, Yunjung
• Granted Patent: US 10,270,575 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04B 7/2656 for structure of frame, burst
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/005 of common pilots, i.e. pilots destined for multiple users or terminals
• 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 5/1469 using time-sharing
• CPC Class Codes: H04W 56/001 Synchronization between nodes
• CPC Class Codes: H04W 56/0015 one node acting as a reference for the others
• CPC Class Codes: H04W 72/30 Resource management for broadcast services

Abstract

A method and apparatus for supporting a network listening in a wireless communication system is provided. A user equipment (UE) receives a subframe configuration used for the network listening, and monitors subframes indicated as subframes used for radio interface based synchronization (RIBS) by the received subframe configuration.

Claims

1. A method for supporting, by a user equipment (UE), a network listening in a wireless communication system, the method comprising:

receiving a subframe configuration used for the network listening; and

monitoring subframes indicated as subframes used for radio interface based synchronization (RIBS) by the received subframe configuration.

2. The method of claim 1, wherein the subframe configuration used for the network listening is a second multicast broadcast single frequency network (MBSFN) subframe configuration for the network listening, which overrides a first MBSFN configuration for MBSFN configuration.

3. The method of claim 2, wherein the second MBSFN subframe configuration configures MBSFN subframes with a longer period than the first MBSFN subframe configuration.

4. The method of claim 2, wherein the second MBSFN subframe configuration is given by a system information block (SIB).

5. The method of claim 1, wherein the subframe configuration used for the network listening is a subframe configuration for a time division duplex (TDD) frame, and

wherein the subframes indicated as subframes used for RIBS are special subframes in the TDD frame.

6. The method of claim 5, wherein monitoring subframes indicated as subframes used for RIBS comprises monitoring a guard period in the subframes indicated as subframes used for RIBS.

7. The method of claim 1, further comprising receiving a RIBS reference signal (RIBS-RS) in the subframes indicated as subframes used for RIBS.

8. The method of claim 7, wherein the RIBS-RS is one of a cell-specific reference signal (CRS), a positioning reference signal (PRS), a channel state information reference signal (CSI RS), or a newly defined reference signal for the network listening.

9. The method of claim 7, wherein the subframes indicated as subframes used for RIBS are configured for each of a plurality of cells, which have different stratum levels from each other.

10. The method of claim 9, wherein a number of the subframes configured for a cell having a higher stratum level is larger than a number of the subframes configured for a cell having a lower stratum level.

11. The method of claim 9, wherein the subframes are configured proportional to a stratum level.

12. The method of claim 9, wherein the subframes are configured by being increased with 2 times compared to a previous stratum level in every stratum level.

13. A user equipment (UE) configured to support a network listening in a wireless communication system, the UE comprising:

a radio frequency (RF) unit configured to transmit or receive a radio signal; and

a processor coupled to the RF unit, and configured to;

receive a subframe configuration used for the network listening; and

monitor subframes indicated as subframes used for radio interface based synchronization (RIBS) by the received subframe configuration.

14. The UE of claim 13, wherein the subframe configuration used for the network listening is a second multicast broadcast single frequency network (MBSFN) subframe configuration for the network listening, which overrides a first MBSFN configuration for MBSFN configuration.

15. The UE of claim 13, wherein the subframe configuration used for the network listening is a subframe configuration for a time division duplex (TDD) frame, and

wherein the subframes indicated as subframes used for RIBS are special subframes in the TDD frame.