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Distributed base station

A distributed base station and baseband processing technology, applied in the direction of digital transmission system, electrical components, error prevention, etc., can solve the problems of reducing equipment cost performance, optical interface cost, chip cost, and increase in transmission cost, so as to reduce uplink bandwidth and reduce transmission volume effect

Inactive Publication Date: 2015-02-25
POTEVIO INFORMATION TECH CO LTD
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  • Summary
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Problems solved by technology

[0008] Due to high-speed data transmission, the cost of the optical interface, the cost of the chip matching the interface, and the transmission cost have increased significantly, which seriously reduces the cost performance of the equipment. Therefore, how to reduce the bandwidth of the Ir interface has become a concern of various operators and equipment manufacturers. one of the key issues

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Embodiment Construction

[0016] The data on the RRU-BBU interface is proportional to the number of uplink receiving antennas. The basic design idea of ​​this application is: try to select the module interface that has nothing to do with the antenna as the basis for re-dividing the functions of the BBU and RRU, so as to achieve the purpose of reducing the data bandwidth of the RRU-BBU interface. For the traffic channel, the frequency domain data after physical uplink shared channel (PUSCH) equalization is selected as the interface data between BBU and RRU. Since PUSCH equalization is the data combined and processed by multiple receiving antennas, it has nothing to do with the actual number of antennas, so it can The amount of data transmission on the interface is greatly reduced, and the amount of transmitted data is related to the user scheduling bandwidth, rather than processing all received data.

[0017] The technical solution of this application re-divides the function of the uplink traffic channe...

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Abstract

The invention discloses a distributed base station which comprises a base-band processing unit and a remote radio unit. Uplink traffic channel port data between the base-band processing unit and the remote radio unit are frequency domain data after balance of a physical uplink shared channel (PUSCH). The uplink bandwidth of an Ir port can be effectively reduced.

Description

technical field [0001] The present application relates to the technical field of mobile communication, and in particular to a distributed base station. Background technique [0002] In the mobile communication system, the distributed base station of baseband processing unit (BBU) + remote radio unit (RRU) has been applied on a large scale, and this networking method will also be applied to LTE system, TD-SCDMA system, etc. The baseband IQ signal is transmitted between the BBU and the RRU through an optical fiber. The interface between the BBU and the RRU is called an Ir interface. The bandwidth of the Ir interface depends on the transmission rate of the baseband signal. [0003] The conventional division method of BBU and RRU in the prior art is as follows figure 1 As shown, the RRU is mainly responsible for the RF front-end processing, A / D conversion and intermediate frequency processing of the data received by the antenna, and the BBU is responsible for processing a large...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W88/08
CPCH04W88/085H04L1/065
Inventor 冯绍鹏闫亮王丽
Owner POTEVIO INFORMATION TECH CO LTD