FIELD: data transmission.
SUBSTANCE: invention relates to data transmission for direct communication. To achieve the effect, the first terminal transmits, in accordance with the information transmitted by the access network device, the direct connection data to the second terminal via the direct connection line. The first terminal receives direct connection hybrid automatic repeat request (HARQ) feedback information returned by the second terminal, wherein the direct connection HARQ feedback information is configured to indicate a reception state corresponding to the direct connection data. The first terminal reports the direct connection HARQ feedback information to the access network device.
EFFECT: achieving a high probability of successful transmission and reception of information in a direct communication scenario and in improving the efficiency of data transmission.
22 cl, 7 dwg
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