METHOD AND APPARATUS FOR SIGNALING USABLE DOWNLINK SUBFRAMES FOR LOW COST USER EQUIPMENT IN WIRELESS COMMUNICATION SYSTEM

• US 20170279646A1
• Filed: 09/23/2015
• Published: 09/28/2017
• Est. Priority Date: 09/23/2014
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: YI, Yunjung, YOU, Hyangsun
• Granted Patent: US 10,306,681 B2
• Time in Patent Office: Days
• CPC Class Codes: H04J 11/0026 of multi-user interference
• CPC Class Codes: H04L 27/2602 Signal structure
• CPC Class Codes: H04L 27/2603 Signal structure ensuring backward compatibility with legacy system
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0058 Allocation criteria
• CPC Class Codes: H04L 5/22 using time-division multiplexing
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 48/02 Access restriction performed under specific conditions
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 74/002 Transmission of channel access control information
• CPC Class Codes: H04W 74/006 in the downlink, i.e. towards the terminal
• CPC Class Codes: H04W 74/0833 Random access procedures, e.g. with 4-step access

Abstract

A method and apparatus for signaling usable downlink (DL) subframes for a low cost user equipment (UE) in a wireless communication system is provided. The low cost UE receives information on usable DL subframes for the low cost UE from a network, and performs reception by using the usable DL subframe from the network.

Claims

1. A method for signaling usable downlink (DL) subframes for a low cost user equipment (UE) in a wireless communication system, the method comprising:

receiving information on usable DL subframes for the low cost UE from a network; and

performing reception by using the usable DL subframe from the network.

2. The method of claim 1, wherein performing reception comprises:

receiving a control channel at a first usable DL subframe; and

receiving a data channel at a second usable DL subframe, which is a next usable DL subframe of the first usable DL subframe.

3. The method of claim 2, wherein the next usable DL subframe counts one valid usable DL subframe.

4. The method of claim 1, wherein the information on the usable DL subframes includes a subframe configuration where indicated bits corresponds to the usable DL subframes.

5. The method of claim 4, wherein the usable DL subframes are non-multicast-broadcast single-frequency network (MBSFN) subframes.

6. The method of claim 1, wherein the information on the usable DL subframes includes a bitmap which has a size of 10.

7. The method of claim 1, wherein the information on the usable DL subframes includes a pre-configuration of the usable DL subframes.

8. The method of claim 7, wherein the information on the usable DL subframes is received via a system information block (SIB).

9. The method of claim 7, wherein a number of subframes in a radio frame increases according to the pre-configuration of the usable DL subframes.

10. A low cost user equipment (UE) comprising:

a memory;

a transceiver; and

a processor coupled to the memory and the transceiver, and configured to;

control the transceiver to receive information on usable DL subframes for the low cost UE from a network; and

perform reception by using the usable DL subframe from the network.

11. The low cost UE of claim 10, wherein performing reception comprises:

receiving a control channel at a first usable DL subframe; and

receiving a data channel at a second usable DL subframe, which is a next usable DL subframe of the first usable DL subframe.

12. The low cost UE of claim 11, wherein the next usable DL subframe counts one valid usable DL subframe.

13. The low cost UE of claim 10, wherein the information on the usable DL subframes includes a subframe configuration where indicated bits corresponds to the usable DL subframes.

14. The low cost UE of claim 10, wherein the information on the usable DL subframes includes a bitmap which has a size of 10.

15. The low cost UE of claim 10, wherein the information on the usable DL subframes includes a pre-configuration of the usable DL subframes.