Method and apparatus for device-to-device HARQ process management
First Claim
1. A method by a transmitting user equipment (TX UE), the method comprising:
- receiving resource allocation information for device-to-device (D2D) communication from a base station;
transmitting a group destination identification to a receiving UE (RX UE);
configuring a hybrid automatic repeat request (HARQ) process based on the group destination identification; and
transmitting data of a redundancy version (RV) to the RX UE based on the HARQ process,wherein if the data of the RV is successfully received at the RX UE, data of a next RV is transferred from the RX UE to another UE.
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Abstract
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). A method and an apparatus that may repeatedly transmit signals to cope with and reduce transmission errors in device-to-device (D2D) communication are provided. The method includes receiving, upon generation of data to be transmitted to a receiving user equipment (UE) (RX UE), allocation of resources to be used for D2D communication, transmitting a scheduling assignment (SA) containing identification information of at least one RX UE to the at least one RX UE, assigning at least one hybrid automatic repeat request (HARQ) process for the identification information of the at least one RX UE, and transmitting data to the at least one RX UE based on the HARQ process. Accordingly, it is possible to remove factors causing system performance degradation when retransmission operation for communication between a UE and a base station (eNB) is introduced to D2D communication.
17 Citations
18 Claims
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1. A method by a transmitting user equipment (TX UE), the method comprising:
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receiving resource allocation information for device-to-device (D2D) communication from a base station; transmitting a group destination identification to a receiving UE (RX UE); configuring a hybrid automatic repeat request (HARQ) process based on the group destination identification; and transmitting data of a redundancy version (RV) to the RX UE based on the HARQ process, wherein if the data of the RV is successfully received at the RX UE, data of a next RV is transferred from the RX UE to another UE. - View Dependent Claims (2, 3, 4, 5)
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6. A method by a receiving user equipment (RX UE), the method comprising:
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identifying a group destination identification included in a message received from a transmitting UE (TX UE); configuring a hybrid automatic repeat request (HARQ) process based on the group destination identification; receiving data of a redundancy version (RV) from the TX UE based on the HARQ process; determining whether the data of the RV is successfully received from the TX UE; generating, if the data of the RV is successfully received, data of the next RV; and transmitting the data of the next RV to another RX UE. - View Dependent Claims (7, 8, 9)
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10. A transmitting user equipment (TX UE) comprising:
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a transceiver configured to transmit and receive a signal; and a controller configured to; receive resource allocation information for device-to-device (D2D) communication from a base station, transmit group identification information to a receiving UE (RX UE), configure a hybrid automatic repeat request (HARQ) process based on the group identification information, and transmit data of a redundancy version (RV) to the RX UE based on the HARQ process, wherein if the data of the RV is successfully received at the RX UE, data of a next RV is transferred from the RX UE to another UE. - View Dependent Claims (11, 12, 13, 14)
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15. A receiving user equipment (RX UE) comprising:
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a transceiver configured to transmit and receive a signal; and a controller configured to; identify a group destination identification included in a message received from a transmitting UE (TX UE), configure a hybrid automatic repeat request (HARQ) based on the group destination identification, receive data of a redundancy version (RV) from the TX UE based on the HARQ process, determine whether the data of the RV is successfully received from the TX UE, generate, if the data of the RV is successfully received, data of the next RV, and transmit the data of the next RV to another RX UE. - View Dependent Claims (16, 17, 18)
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Specification