Downlink signal reception method and user equipment, and downlink signal transmission method and base station
AssigneeLG Electronics Inc.
InventorsEunsun KIM, Kijun KIM, Suckchel YANG, Hyunsoo KO, Yunjung YI
Life of this patent
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Abstract
A control channel (CCH) is transmitted/received within a search space which is a group of CCH candidates. The CCH is transmitted/received in one of the CCH candidates. The search space spans N (N is a positive integer) time symbols among the multiple time symbols, and is configured to include a greatest number of CCH candidates in the first time symbols among the N time symbols.
Claims13
A method of receiving a downlink signal by a user equipment, the method comprising:
- detecting a control channel (CCH) from one of CCH candidates by monitoring the CCH candidates in a search space which is a set of the CCH candidates of an aggregation level L (where L is a positive integer) within a time transmission interval (TTI);
- and
- receiving downlink data based on downlink control information carried by the CCH,
- wherein the TTI includes a plurality of time symbols in a time domain,
- wherein the search space spans N time symbols (where N is a positive integer) among the plural time symbols,
- wherein each of the CCH candidates consists of one of the N time symbols in the time domain and L control channel elements (CCEs) in a frequency domain, and
- wherein the search space includes a greatest number of CCH candidates on a first time symbol of the N time symbols.
A user equipment for receiving a downlink signal, the user equipment comprising,
- a radio frequency (RF) module, and
- a processor configured to control the RF module,
- wherein the processor:
- detects a control channel (CCH) from one of CCH candidates by monitoring the CCH candidates in a search space which is a set of the CCH candidates of an aggregation level L (where L is a positive integer) within a time transmission interval (TTI);
- and
- controls the RF module to receive downlink data based on downlink control information carried by the CCH,
- wherein the TTI includes a plurality of time symbols in a time domain,
- wherein the search space spans N time symbols (where N is a positive integer) among the plural time symbols,
- wherein each of the CCH candidates consists of one of the N time symbols in the time domain and L control channel elements (CCEs) in a frequency domain, and
- wherein the search space includes a greatest number of CCH candidates on a first time symbol of the N time symbols.
9-12. (canceled)
A base station for transmitting a downlink signal, the base station comprising:
- a radio frequency (RF) module, and
- a processor configured to control the RF module,
- wherein the processor:
- controls the RF module to transmit a control channel (CCH) using one of CCH candidates in a search space which is a set of the CCH candidates of an aggregation level L (where L is a positive integer) within a time transmission interval (TTI);
- and
- controls the RF module to transmit downlink data based on downlink control information carried by the CCH,
- wherein the TTI includes a plurality of time symbols in a time domain,
- wherein the search space spans N time symbols (where N is a positive integer) among the plural time symbols,
- wherein each of the CCH candidates consists of one of the N time symbols in the time domain and L control channel elements (CCEs) in a frequency domain, and
- wherein the search space includes a greatest number of CCH candidates on a first time symbol of the N time symbols.
Dependencies are inferred from the claim text.