| 摘要 |
An establishment method of uplink synchronization based on the joint transmission technology utilizes channel symmetry and channel time correlation of the downlink and the uplink in TDD mobile communication system, and then applies the joint transmission technology in the uplink synchronization establishment process in a TDD mobile communication system, and based on the simple processing performed by UE, the base station can accurately detect the timing of uplink signals by performing related calculations. The present invention has fundamentally solved the problem of low probability of success in uplink synchronization establishment.
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