Service transmission method and system under RRU and BBU loop network

A technology for ring networking and service transmission, applied in the field of communications, can solve the problems of service call drop, poor service quality, and inability to meet service call drop tolerance time, etc., and achieve the effect of improving service transmission quality

CN101771591BActive Publication Date: 2011-09-28DATANG MOBILE COMM EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2011-09-28

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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.
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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...

Examples

Embodiment Construction

[0049] The embodiment of the present invention provides a service transmission method and system in an RRU and BBU ring networking system, which is used to realize that the RRU can quickly switch from a faulty service channel to another service channel, avoid service drop, and improve service quality .

[0050] In the current RRU and BBU ring networking system, although all RRUs are connected end to end to form a ring, the RRUs in the ring networking system are connected to the BBU through two links in essence, but at a certain moment, the RRUs are only connected to the BBU. One optical port for communication. After the optical fiber is disconnected, the affected RRU is connected to the BBU through another optical port, so a set of parameters (IP address, antenna configuration, IQ data channel configuration, cell configuration, etc.) need to be obtained again. Similarly, for the BBU, it is necessary to re-establish a set of resources on the BBU side for this RRU. This ring ne...