Wireless device and method for receiving downlink control channel

• US 10,560,249 B2
• Filed: 05/20/2016
• Issued: 02/11/2020
• Est. Priority Date: 05/22/2015
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: You, Hyangsun, Yi, Yunjung
• Primary Examiner(s): Kizou, Hassan
• Assistant Examiner(s): Belur, Deepa
• Application Number:
  US15/571,410
• Publication Number:
  US 20190158264A1
• Time in Patent Office: 1,362 Days
• CPC Class Codes: H04L 27/2607 Cyclic extensions
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0082 at predetermined intervals
• CPC Class Codes: H04L 5/0096 Indication of changes in allocation
• CPC Class Codes: H04L 5/1469 using time-sharing
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• 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

Abstract

An embodiment of the present description provides a method for receiving a downlink control channel by a wireless device. The method can comprise a step for, when a wireless device receives configuration for repetition of a downlink control channel, determining a plurality of subframes for receiving the repetition of the downlink control channel. A special subframe, on the basis of particular TDD special subframe configuration, can be determined to be excluded from the receiving of the repetition of the downlink control channel. The method can comprise a step for receiving the repetition of the downlink control channel on the determined plurality of subframes from which the special subframe has been excluded.

Claims

1. A method for receiving a signal for a downlink control channel, the method performed by a device and comprising:

based on that the device is configured with a repetition of the downlink control channel, determining a plurality of subframes for receiving the repetition of the downlink control channel,

wherein a first time division duplex (TDD) special subframe based on a first special subframe configuration is not used for receiving the repetition of the downlink control channel, and

wherein the first special subframe configuration is one of special subframe configuration 1, 2, 6 and 7 in normal cyclic prefix (CP); and

receiving the signal including the repetition of the downlink control channel on the determined plurality of subframes except for the first TDD special subframe,

wherein the determined plurality of subframes includes 4 Enhanced Resource Element Groups (EREGs) per an Enhanced Control Channel Element (ECCE) in the normal CP,

wherein the first TDD special subframe is considered to be included in the plurality of subframes, based on that the first TDD special subframe is informed as a downlink subframe by higher layer signaling, and

wherein the first TDD special subframe is used for counting a number of the plurality of subframes for receiving the repetition of the downlink control channel.

2. The method of claim 1, wherein a second TDD special subframe, different from the first TDD special subframe, is used for receiving the repetition of the downlink control channel.

3. The method of claim 1, wherein the first TDD special subframe includes a different number of ECCEs from a number of ECCEs of a normal downlink subframe.

4. The method of claim 1, wherein a second TDD special subframe, different from the first TDD special subframe, includes different numbers of EREGs per an ECCE based on a CP length.

5. The method of claim 1, wherein the device is a low-capability (LC) device, a low-cost (LC) device or a bandwidth reduced device.

6. A device for receiving a signal for a downlink control channel, comprising:

a transceiver; and

a processor operatively coupled to the transceiver, the processor is configured to;

determine a plurality of subframes for receiving a repetition of the downlink control channel, based on that the device is configured with the repetition of the downlink control channel,

wherein a first time division duplex (TDD) special subframe based on a first TDD special subframe configuration is not used for receiving the repetition of the downlink control channel, and

wherein the first special subframe configuration is one of special subframe configuration 1, 2, 6 and 7 in normal cyclic prefix (CP); and

control the transceiver to receive the signal including the repetition of the downlink control channel on the determined plurality of subframes except for the first TDD special subframe,

wherein the determined plurality of subframes includes 4 Enhanced Resource Element Groups (EREGs) per an Enhanced Control Channel Element (ECCE) in the normal CP,

wherein the first TDD special subframe is considered to be included in the plurality of subframes, based on that the first TDD special subframe is informed as a downlink subframe by higher layer signaling, and

wherein the first TDD special subframe is used for counting a number of the plurality of subframes for receiving the repetition of the downlink control channel.

7. The device of claim 6, wherein a second TDD special subframe, different from the first TDD special subframe, is used for receiving the repetition of the downlink control channel.

8. The device of claim 6, wherein the first TDD special subframe includes a different number of ECCEs from a number of ECCEs of a normal downlink subframe.

9. The device of claim 6, wherein a second TDD special subframe, different from the first TDD special subframe, includes different numbers of EREGs per a ECCE based on a CP length.