Method for executing HARQ in wireless communication system and device therefor
AssigneeLG Electronics Inc.
InventorsEunjong Lee, Heejeong Cho, Genebeck Hahn, Ilmu Byun
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Abstract
In this specification, a method of performing a hybrid automatic request (HARQ) in a wireless communication system is performed by a user equipment, and includes receiving first data from a first eNB through a first radio link; receiving second data from at least one second eNB through a second radio link; combining the first data and the second data; decoding the combined data; and feedbacking the results of the decoding through at least one of the first radio link or the second radio link.
Claims11
A method of performing, by a user equipment (UE), a hybrid automatic request (HARQ) in a wireless communication system, the method comprising:
- receiving a first data from a first eNB through a first radio link;
- receiving a second data from at least one second eNB through a second radio link;
- combining the first data and the second data;
- decoding the combined data;
- and
- feedbacking results of the decoding through at least one of the first radio link or the second radio link,
- wherein the first radio link and the second radio link indicate a cell or cell group (CG) of a combining cell group (CCG),
- wherein the combining cell group (CCG) indicates a set of at least one cell or cell group capable of transmitting and receiving different HARQ data generated from an identical HARQ transport block (TB), and
- wherein the combining comprises:
- confirming whether the second radio link is included in the combining cell group (CCG);
- based on the second radio link being included in the CCG, confirming whether the second data received through the second radio link is new data or is a retransmission of the first data;
- and
- combining the first data and the second data based on that the second data is the retransmission of the first data.
A user equipment (UE) for performing a hybrid automatic request (HARQ) in a wireless communication system, the user equipment comprising:
- a radio frequency (RF) unit for transmitting and receiving radio signals;
- and
- a processor functionally connected to the RF unit, wherein:
- the processor controls to:
- receive first data from a first eNB through a first radio link;
- receive second data from at least one second eNB through a second radio link;
- combine the first data and the second data;
- decode the combined data;
- and
- feedback results of the decoding through at least one of the first radio link or the second radio link,
- wherein the first radio link and the second radio link indicate a cell or cell group (CG) of a combining cell group (CCG), and
- wherein the combining cell group (CCG) indicates a set of at least one cell or cell group capable of transmitting and receiving different HARQ data generated from an identical HARQ transport block (TB), and
- wherein the processor combines the first data and the second data by:
- confirming whether the second radio link is included in the combining cell group (CCG);
- based on the second radio link being included in the CCG, confirming whether the second data received through the second radio link is new data or is a retransmission of the first data;
- and
- combining the first data and the second data based on that the second data is the retransmission of the first data.
Dependencies are inferred from the claim text.