Method and device for transmitting service data

Abstract

The invention discloses a method and a device for transmitting service data. A remote radio unit (RRU) comprises at least two optical interfaces which are connected to the optical interfaces of a baseband processing unit (BBU) through optical fibers. The method comprises the following steps that: the RRU determines the optical interface used by transmitting the service data from the at least two optical interfaces, and sending the information of the determined optical interface to the BBU; and the service data between the RRU and the BBU is transmitted on the determined optical interface. The method and the device for transmitting the service data can realize the bandwidth extension of the RRU and the BBU without high-speed optical module or SerDes product.

Description

technical field [0001] The present invention relates to the field of optical fiber communication, in particular to a method and device for transmitting service data. Background technique [0002] At present, distributed base stations are increasingly widely used. like figure 1 As shown, it is a schematic diagram of the structure of a distributed base station. The distributed base station divides the traditional base station into two parts: RRU (Remote Radio Unit, remote radio unit) and BBU (Base Band Unit, baseband processing unit). Pull the RRU far away, and transmit data between the RRU and the BBU through optical fibers. [0003] Specifically, the RRU and the BBU respectively include optical modules, and the optical modules are used to realize the conversion between optical signals and electrical signals. The interface of the optical module connecting the optical fiber is the "Ir interface", and the Ir interface specification includes the following contents: a 1228.8Mb...

AI Technical Summary

Problems solved by technology

[0005] At present, in order to meet the application requirements of larger business data volumes, more powerful RRUs and BBUs have emerged. The data transmission between the two is increasingly limited by bandwidth. For example, 72 AxCs need to be supported. The fastest 2.5Gbps optical module and SerDes in the module cannot be supported

[0006] The general way to increase bandwidth is to use higher rate optical modules and SerDes. However, currently there are very few higher rate optical modules and SerDes products in the industry, and the price is very expensive.

Images