An information transmission method, device and communication system. The information transmission method includes: the user equipment receives the instruction sent by the base station that the user equipment can use the instruction information of the side link when the Air-port link cannot transmit data normally; the user equipment uses the side link to transmit data with other user equipment when the Air-port link cannot transmit data normally. As a result, data information can be successfully transmitted in other links even if the Air-port link cannot transmit data normally.
【技术实现步骤摘要】
【国外来华专利技术】PCT国内申请,说明书已公开。
【技术保护点】
PCT国内申请,权利要求书已公开。
【技术特征摘要】
【国外来华专利技术】PCT国内申请,...
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