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A method for reducing bandwidth of ir interface and distributed base station

A distributed base station and interface bandwidth technology, applied in the field of methods and distributed base stations, can solve the problems of reducing equipment cost performance, optical interface cost, chip cost, and increase in transmission cost, and achieve the effect of reducing transmission cost and bandwidth demand

Inactive Publication Date: 2011-12-28
POTEVIO INFORMATION TECH
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Problems solved by technology

[0009] It can be seen from the above that in the existing baseband remote system, high-speed data transmission leads to a substantial increase in the cost of the optical interface, the cost of the chip matching the interface, and the transmission cost, which seriously reduces the cost performance of the device. Therefore, how to reduce the bandwidth of the Ir interface The problem has become one of the key issues concerned by various operators and equipment manufacturers

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  • A method for reducing bandwidth of ir interface and distributed base station
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  • A method for reducing bandwidth of ir interface and distributed base station

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[0064] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0065] The main idea of ​​the present invention is to propose a bit-level baseband remote base station architecture, and move the symbol-level processing function in the baseband processing from the BBU to the RRU for implementation, so that the Ir interface only needs to transmit the uplink and downlink after bit-level processing bit data, thereby greatly reducing the bandwidth requirements of the uplink and downlink Ir interfaces, thereby substantially reducing equipment costs and transmission costs.

[0066] Based on the above-mentioned main ideas, the present invention provides a method for reducing the bandwidth of the Ir interface, which method is applied to the remote baseband system, including the following processing:

[0067] During downlink t...

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Abstract

The invention provides a method for decreasing the bandwidth of an Ir interface, and the method is applied to a remote baseband system. The method comprises the following steps that: in downlink transmission, a BBU carries out bit-grade transmission processing on downlink data and transmits the downlink data subjected to the bit-grade transmission processing to an RRU (remote radio unit) by virtue of the Ir interface; the RRU carries out symbol-grade transmission processing on the received downlink data; in uplink reception, the RRU carries out symbol-grade reception processing on received uplink data and transmits the uplink data subjected to the symbol-grade reception processing to the BBU by virtue of the Ir interface; and the BBU carries out bit-grade reception processing on the received uplink data. The invention further provides a distributed base station. By the application of the method and the distributed base station, the bandwidth requirement of the Ir interface can be reduced greatly so as to decrease the transmission cost of the Ir interface.

Description

technical field [0001] The invention relates to baseband remote system technology, in particular to a method for reducing Ir interface bandwidth and a distributed base station. Background technique [0002] The existing TD-LTE (Time Division Multiplexed LTE) system adopts the BBU+RRU (indoor baseband processing unit + radio remote unit) baseband remote base station architecture. The BBU is responsible for baseband processing, main control transmission, etc., and the RRU is responsible for digital intermediate frequency , Radio frequency processing, digital baseband signals are transmitted between the BBU and the RRU using optical fiber, and the interface between the BBU and the RRU is called an Ir interface. The architecture of this base station is as figure 1 shown. [0003] Baseband processing includes bit-level processing and symbol-level processing. According to uplink and downlink, baseband processing can be divided into two parts: baseband transmission processing an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/15H04W88/08H04L1/00
Inventor 吴迪万建超
Owner POTEVIO INFORMATION TECH
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