Communication method and communication device

Abstract

The present invention provides a communication method and a communication device. The communication method includes the following steps that: at least one serving cell is configured for each terminal, wherein each serving cell operates on an unauthorized carrier; at least one serving cell is selected from the at least one serving cell so as to be adopted as the primary cell or primary auxiliary cell of each terminal, so that the primary cell group or the primary auxiliary cell group of each terminal can be formed; and master information blocks are sent to each terminal through the primary cell group or the primary auxiliary cell group. With the communication method and communication device provided by the technical schemes of the invention adopted, the transmission probability of the master information blocks on the primary cell group or the primary auxiliary cell group on the non-authorized frequency band can be improved, and therefore, it can be ensured that a user can receive the MIBs in time, and time synchronization can be carried out according to a system frame number in the MIB, and thus, the normal proceeding of communication can be ensured, and delay and efficiency requirements of the communication can be satisfied.

Description

technical field [0001] The present invention relates to the technical field of communication, and in particular, to a communication method and a communication device. Background technique [0002] With the rapid increase of communication traffic, the 3GPP authorized spectrum is increasingly insufficient to provide higher network capacity. Therefore, 3GPP proposed the concept of LAA (LTE Assisted Access, LTE Assisted Access), which is used to use unlicensed spectrum with the help of LTE licensed spectrum. The LAA solution is based on the function of carrier aggregation to deploy the LTE system in the unlicensed frequency band. [0003] At the same time, the unlicensed spectrum can work in two ways, one is Supplemental Downlink (SDL, Supplemental Downlink), that is, only downlink transmission subframes; the other is TDD mode, which includes both downlink subframes and uplink subframes. The supplementary downlink can only be used with the help of carrier aggregation technology...

AI Technical Summary

Problems solved by technology

[0007]However, since the occupation of unlicensed spectrum needs to adopt the mechanism of Listen Before Talk (LBT for short), if the channel is occupied by other devices, it cannot The MIB is sent normally, which in turn will cause the user to fail to receive the system frame number of the MIB normally and cannot perform time synchronization, resulting in communication failure

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