Data transmission and reception method and device, terminal, and base station of UE in non-connected state
A technology of a data transmission method and a data reception method, applied in the field of communication, can solve the problems of prolonging the data transmission delay of a non-connected UE, and the state transition time is long, so as to meet the requirements of service transmission, save the delay, and reduce the delay. Effect
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[0042] As mentioned in the background art, in the prior art, a UE in a non-connected state is transferred to a connected state to transmit data, but since the state transition introduces a long delay, the data transmission process needs to be further improved.
[0043] In the prior art, the random access process is mainly divided into contention based random access (Contention Based Random Access, CBRA for short) and contention free random access (Contention Free Random Access, CFRA for short).
[0044] If CFRA is adopted, the network needs to configure dedicated resources. The dedicated resources mainly refer to time-frequency resources and code resources for initiating a random access preamble (preamble), indicated by the parameter ra-PreambleIndex. refer to figure 1 , figure 1 It is a schematic flow chart of random access in the prior art. This random access is CFRA. First, the base station 2 performs operation S0, that is, sends random access preamble configuration info...
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