Data transmission method and device

Abstract

The invention provides a data transmission method and a device. The invention is characterized in that the access information sent by two stations can be received, and the access information can be used to indicate the detection time of the user device and / or the receiving time of the upstream data received from the user device; the at least two stations are the synchronization points and belong to the same logic zone; various detection times are equal to each other according to the access information ; and / or according to the access information, the receiving times are determined to be the same; according to the transmission time delay between the at least two stations, the sending time of the at least two stations toward the downstream data corresponding to the access information can be determined; the downstream data information can be sent to the at least two stations, the downstream data information can be used to indicate the downstream data and the sending time, therefore the downstream data can be sent to the user device by the stations at the sending time. The frequency resource can be saved.

Description

technical field [0001] The present invention relates to the field of communication, and more particularly, to a method and device for transmitting data. Background technique [0002] At present, there is a known technology that can transform multiple directional sites into omnidirectional sites, and further become a logical site. The original cells of each site become different location groups of a unified logical cell, and each location group It is equivalent to a remote radio module (RRU, Radio Remote Unit), managed by a baseband processing unit (BBU, Base Band Unite), so that it can further increase the multiplexing degree of shared cells and save frequency resources. [0003] Since different sites use the same frequency to communicate with user equipment, there are situations where multiple sites may receive uplink data sent by user equipment at the same time, and each site sends the data to the core network, resulting in the core network needing to process the same user...

AI Technical Summary

Problems solved by technology

[0004] However, since the CPRI interface needs to be carried on the optical fiber, it is almost impossible in areas where optical fiber transmission resources are not very abundant.

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