Uplink interference suppression device and uplink interference suppression method in C-RAN (Cloud-Radio Access Network) architecture radio access network

A wireless access network, transmission interference technology, applied in line failure/interference reduction, shaping network in transmitter/receiver, baseband system components, etc. C-RAN and other issues to achieve the effect of eliminating signal interference

Active Publication Date: 2014-01-22
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0004] The problem to be solved by the present invention is: there is no interference elimination technology for uplink transmission of C-RAN at pres

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  • Uplink interference suppression device and uplink interference suppression method in C-RAN (Cloud-Radio Access Network) architecture radio access network
  • Uplink interference suppression device and uplink interference suppression method in C-RAN (Cloud-Radio Access Network) architecture radio access network
  • Uplink interference suppression device and uplink interference suppression method in C-RAN (Cloud-Radio Access Network) architecture radio access network

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Embodiment Construction

[0013] The present invention proposes a centralized uplink interference suppression system for the C-RAN architecture wireless access network system. In the C-RAN architecture-based wireless access network system, the present invention constructs a centralized Type processing uplink interference elimination device. Such as figure 1 As shown, the device includes a user detection module, a channel state estimation module, an interference elimination module and an output module. The user detection module reads the received signal of each RRU in the baseband resource pool, extracts the information of the reference symbol in the signal sent by Ue, and stores it in an array; the channel state estimation module reads the information array in the user detection module, and estimates the arrival of the mobile terminal Ue The channel state between the surrounding RRUs, the channel quality is estimated, and stored in the array; the interference elimination module reads the array in the ...

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Abstract

The invention discloses an uplink interference suppression technique in a C-RAN architecture radio access network, which relates to a radio access network system. According to the correlation between the received signals of all RRUs (remote radio unit), the reference symbols in the signals transmitted by mobile terminals Ue (User equipment) are extracted and stored into an information array, the conditions and quality of the channels between the Ues and the peripheral RRUs are estimated according to the information array, and are stored into an array, and a base band resource pool carries out interference elimination on each received signal, suppressing the uplink interference of mobile subscribers in the system. The invention takes full advantage of the centralized processing of the C-RAN architecture-based radio access network to thoroughly eliminate the signal interference between systems.

Description

technical field [0001] The invention relates to a wireless access network system, in particular to an interference suppression technology in the wireless access network system. Background technique [0002] In a wireless communication network, due to the use of an open shared wireless channel, electromagnetic interference between devices is inevitable. China Mobile proposes a C-RAN architecture wireless access network system. The C-RAN architecture wireless access network system includes a distributed wireless network composed of Remote Radio Units (RRU), an Optical Transmission Network (Optical transmission network, OTN) and centralized baseband resource processing pool. In the wireless access network system based on the C-RAN architecture, because the optical transport network has the advantages of high transmission bandwidth and low transmission delay, the transmission delay generated by the signal transmission from each RRU to the centralized baseband resource pool is v...

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Application Information

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IPC IPC(8): H04L25/02H04L25/03H04L25/08
Inventor 刘占军何宏智侯维娜陈前斌
Owner CHONGQING UNIV OF POSTS & TELECOMM
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