Wireless communication method, device and system
A technology for wireless communication and wireless communication equipment, which is applied in the fields of wireless communication methods, communication devices and communication systems, can solve the problem that the communication mode cannot continue to use the cellular communication mode, etc., and achieves the effects of ensuring resource utilization and reducing control signaling overhead.
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specific Embodiment 1
[0110] According to the wireless communication method in this example, the network node transmits the first authorization information to the receiving device (first communication device) and / or the transmitting device (second communication device), and the transmitting end device (second communication device) of D2D communication sends the D2D The communication receiver device (first communication device) transmits the second authorization information and service data. Wherein, the first grant information includes at least resource allocation information, and the second grant information includes at least modulation and coding schemes.
[0111] In this example, the first authorization information is sent in a high-layer signaling manner. For example, when establishing a D2D link, a network node (such as a base station eNB) sends a second Authorization information to indicate allocated resources for D2D communication.
[0112] In this example, the second authorization informa...
specific Embodiment 2
[0116] According to the wireless communication method in this example, the network node transmits the first authorization information to the transmitting device (second communication device) and / or the receiving device (first communication device), and the transmitting end device (second communication device) of D2D communication sends the D2D The communication receiver device (the first communication device) transmits the second authorization information. Wherein, the first grant information includes at least first resource allocation information, and the second grant information includes at least second resource allocation information and a modulation and coding scheme.
[0117] In this example, the first authorization information is sent in a high-layer signaling manner. For example, when establishing a D2D link, a network node (such as a base station eNB) sends a first communication device, such as a UE, and / or a second communication device, such as a UE or a media server ...
specific Embodiment 3
[0124] The second communication device determines the MCS level in the second authorization information at least according to the channel measurement result. The channel measurement result is obtained by the second communication device measuring a reference signal (Reference Signal) sent by the first communication device; or, the first communication device measures the reference signal sent by the second communication device to obtain the channel measurement result, and The channel measurement result is fed back to the second communication device. The reference signal may be one or more of the following signals: demodulation reference signal (Demodulation Reference Signal, DMRS), sounding reference signal (Sounding Reference Signal, SRS), random access preamble (Random Access preamble), Channel State Information Reference Signal (CSI-RS), dedicated reference signal for device-to-device communication.
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