A new C-RAN architecture based on RF signal soft-switching

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• 作者：Xiaoyuan Lu ; Yunxiang Xu ; Kejun Zhao ; Wen Yang
• 关键词：CoMP ; Backhaul ; C ; RAN architecture ; RF signal soft ; switching ; Narrow ; band signal ; Parallel processing ; Computer simulation
• 刊名：Annals of Telecommunications
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：71
• 期：1-2
• 页码：1-14
• 全文大小：2,047 KB
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• 作者单位：Xiaoyuan Lu (1)
  Yunxiang Xu (2)
  Kejun Zhao (2)
  Wen Yang (2)
  
  1. School of Computer Science, Fudan University, Shanghai, 200433, China
  2. National Engineering Research Center for Broadband Networks and Applications, Shanghai, 200336, China
  
• 刊物类别：Engineering
• 刊物主题：Engineering, general
  Electronic and Computer Engineering
  
• 出版者：Springer Paris
• ISSN：1958-9395

文摘

Coordinated multi-point (CoMP) is known to be one of the key technologies for long-term evolution (LTE)-advanced systems. CoMP technology can improve system capacity and the quality of wireless communication services for users in LTE networks. However, in practice, the actual performance of CoMP technology is limited by the switching capacity of the backhaul network among distributed base stations as well as its latencies. In this paper, we propose a new cloud radio access network architecture based on RF signal soft-switching to solve this problem. Furthermore, we introduce a narrow-band parallel processing technique on a common public radio interface in downlink and uplink to reduce the volume of data as well as the latencies in the transmission process among base band units and remote radio units. By combining theoretical analysis with computer simulations, we show that the technique is valid both for downlink and uplink, i.e., it does not degrade the performance of downlink and uplink propagation between BBU pool and user equipments. Moreover, the computational time of the narrow-band parallel processing technique is less than that of the standard technique. Keywords CoMP Backhaul C-RAN architecture RF signal soft-switching Narrow-band signal Parallel processing Computer simulation