Base band pool equipment
A baseband pool and equipment technology, applied in active electrical relay systems, selection devices, communication between multiple stations, etc., can solve problems such as large attenuation of analog signals, too far away from installation points, and excessive noise, and achieve The effect of improving integration, reducing design cost, increasing reliability and maintainability
Inactive Publication Date: 2008-07-30
ZTE CORP
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Problems solved by technology
A disadvantage of this remote device is that the installation point cannot be too far away from the baseband pool (BBU), otherwise the analog signal on the interface will be greatly attenuated and more noise will be introduced
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[0020] The specific implementation of the present invention will be further described below in conjunction with accompanying drawing:
[0021] The baseband pool (BBU) based on digital intermediate frequency transmission described in the present invention adds a digital intermediate frequency processing function on the basis of the original function. The transmission interface between the baseband pool (BBU) and the remote radio unit (RRU) does not transmit baseband data, but transmits digital intermediate frequency data.
[0022] The invention includes: a physical interface with RNC (Radio Network Control), a baseband processing circuit, a digital intermediate frequency processing circuit, a physical interface with remote radio equipment (RRU), and the like. The digital intermediate frequency processing circuit completes the conversion of uplink digital intermediate frequency to baseband and the conversion of downlink baseband data to digital intermediate frequency signal. Th...
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The invention discloses a base-band pool device, which comprises a physical adapter connected with a wireless network controller, a base-band process circuit and a physical adapter linked to a radio frequency remote device; moreover, the invention further comprises a digital intermediate frequency process circuit; the down-stream data linkage is accessed in the physical adapter connected with the wireless network controller; after the base-band process through the base-band process circuit, the transmitted down-stream base-band data is sent into the digital intermediate frequency process circuit for digital upper frequency conversion and process, so as to be converted into digital intermediate frequency data; the digital intermediate frequency data is accessed to the physical adapter connected with the radio frequency remote device; the up-stream signals and the digital intermediate frequency data received by the physical adapter in the radio frequency remote device are sent to the digital intermediate frequency process circuit, so as to perform digital down frequency conversion process; the base-band data through the digital down frequency conversion is sent to the base-band process circuit for base-band process, before being delivered to the physical adapter in the wireless network controller. The invention increases the reliability and maintainability of the overall base station system.
Description
technical field [0001] The invention relates to a base station device in a mobile wireless system, in particular to a base band pool device. Background technique [0002] The base station equipment is at the front end of the access network in the wireless cellular system, and the base station equipment has a large number in the whole system. Different design structures of the base station equipment have a great influence on the cost of the entire network, the convenience of construction, and the performance of the network . [0003] Base station equipment can be divided into outdoor base stations and indoor base stations according to different application environments. According to the system structure of the base station, it can be divided into two types: integrated base station and distributed base station. The integrated base station integrates functions such as Iub interface, baseband processing, and radio frequency processing, and realizes the functions of a complete ...
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IPC IPC(8): H04Q7/30H04B7/15H04B7/26
Inventor 高嵩林志华廖娟王宁
Owner ZTE CORP