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US 8,942,196 B2Granted
Downlink control information receiving method in wireless communication system and apparatus therefor
AssigneeLG Electronics Inc.
InventorsYeong Hyeon Kwon, Jae Hoon Chung, Seung Hee Han, So Yeon Kim
Life of this patent
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Abstract
The present invention discloses a method for receiving downlink control information by a terminal in a wireless communication system. More specifically, the method comprises the steps of receiving a coordination field from a base station and receiving control information on more than one component carrier that is allocated to the terminal, on the basis of the coordination field, wherein the coordination field includes more than one parameter for decoding the control information on the more than one component carrier.
Claims10
A method for receiving downlink control information by a user equipment in a wireless communication system to which carrier aggregation is applied, the method comprising:
- receiving a coordination field from a base station through a reference component carrier;
- and
- receiving control information through a plurality of component carriers including the reference component carrier based on the coordination field,
- wherein:
- the coordination field includes one or more parameters for decoding the control information on the plurality of component carriers,
- the one or more parameters comprise at least one of a first type set of at least one difference value between a Control Channel Element (CCE) index of a control information including the coordination field and a CCE index of a kth control information and a second type set of a CCE index of a specific control information and at least one difference value between the CCE index of the specific control information and a CCE index of an lth control information,
- the CCE index of the specific control information is located at a start of the second type set and associated with a specific component carrier except the reference component carrier or an extended Physical Downlink Control Channel (PDCCH) of the reference component carrier,
- if one of the one or more parameters correspond to the first type set, the first type set indicates locations of control information for the reference component carrier,
- if one of the one or more parameters correspond to the second type set and the CCE index of the specific control information associated with the specific component carrier, the second type set indicates locations of control information for the specific component carrier, and
- if one of the one or more parameters correspond to the second type set and the CCE index of the specific control information is associated with the extended PDCCH, the second type set indicates locations of control information for the reference component carrier, carried by the extended PDCCH region of the reference component carrier.
7 more elements
A user equipment in a wireless communication system to which carrier aggregation is applied, the user equipment comprising:
- a receiving module configured to receive a coordination field from a base station through a reference component carrier and receive control information through a plurality of component carriers including the reference component carrier;
- and
- a processor configured to acquire the control information based on the coordination field,
- wherein:
- the coordination field includes one or more parameters for decoding the control information on the plurality of component carriers,
- the one or more parameters comprise at least one of a first type set of at least one difference value between a Control Channel Element (CCE) index of a control information including the coordination field and a CCE index of a kth control information and a second type set of a CCE index of a specific control information and at least one difference value between the CCE index of the specific control information and a CCE index of an lth control information,
- the CCE index of the specific control information is located at a start of the second type set and associated with a specific component carrier except the reference component carrier or an extended Physical Downlink Control Channel (PDCCH) of the reference component carrier,
- if one of the one or more parameters correspond to the first type set, the first type set indicates locations of control information for the reference component carrier,
- if one of the one or more parameters correspond to the second type set and the CCE index of the specific control information associated with the specific component carrier, the second type set indicates locations of control information for the specific component carrier, and
- if one of the one or more parameters correspond to the second type set and the CCE index of the specific control information is associated with the extended PDCCH, the second type set indicates locations of control information for the reference component carrier, carried by the extended PDCCH region of the reference component carrier.
7 more elements
Dependencies are inferred from the claim text.