Service transmission method and system under RRU and BBU loop network

Abstract

The invention discloses a service transmission method and a service transmission system under an RRU and BBU loop network, which are used for improving the service transmission quality and avoiding dropped call of service. The service transmission method in a loop network system formed by a remote radio unit RRU and a base band unit BBU comprises that: the RRU and BBU adopt a first service channel for accessing the BBU through a first optical port of the BBU to transmit service; the RRU and BBU adopt a special channel for accessing the BBU through a second optical port of the BBU to perform time delay detection; when the first service channel is failed, the BBU and the RRU adopt a second service channel for accessing the BBU through the second optical port of the BBU to continue service transmission by utilizing a transmission time delay value measured by the special channel.

Description

technical field [0001] The present invention relates to the field of communication technology, and in particular to a service transmission method and system under ring networking of a remote radio frequency unit (RRU, Remote Radio Unit) and a base band unit (BBU, Base Band Unit). Background technique [0002] In the TD-SCDMA remote baseband system, fiber optic connections are usually used between the BBU and the RRU. In some application scenarios, multi-level RRUs and BBUs are connected in series using RRUs to realize serial service channels. Therefore, if the optical fiber used to connect multi-level RRUs fails for some reason, some RRU cannot communicate with BBU. [0003] In order to solve the above problems, the concept of RRU and BBU ring networking is proposed in the Ir interface (interface between BBU and RRU) technology, that is, multi-level RRU and BBU ring are connected in series, and each RRU can correspond to two different optical ports. The service channels co...

AI Technical Summary

Problems solved by technology

[0012] It can be seen that the total time required for the above four items is accumulated, the entire time required in the soft reset mode is about 25s, and the entire time required in the hard reset mode is greater than 1 minute, that is to say, no matter which In general RRU and BBU ring networking technology, the time required from the service channel failure to the re-use of another service channel to restore the service cannot meet the tolerance time of service drop, so it will lead to service call drop

[0013] To sum up, in the existing technology, in the case of RRU and BBU ring networking, after the current service channel fails, the RRU needs to be restarted, reconnect to the BBU from another service channel, and reconfigure the relevant parameters. The time required for the whole process exceeds the tolerance time of service drop, resulting in service drop and poor service quality

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