Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2017, Vol. 40 ›› Issue (4): 16-22.doi: 10.13190/j.jbupt.2017.04.003

• Papers • Previous Articles     Next Articles

A LTE-U Coexistence Scheme Based on Dynamic Channel Switching and Muting Strategy

SHEN Bin, ZHAO Si-cong   

  1. Key Laboratory of Mobile Communication Technology, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
  • Received:2017-04-04 Online:2017-08-28 Published:2017-07-10

Abstract: Based on listen before talk (LBT) channel access mechanism, a scheme allowing the LTE-U system coexistence with WIFI system in 5 GHz unlicensed band was proposed. At the same time, by introducing the dynamic channel switching technology, it is effective to avoid the interference to the WIFI system caused by the LTE-U system which occupies the same channel for a long time. On this basis, the silence length of the LBT mechanism is optimized to further enhance the coexistence efficiency with the WIFI system. Experiments show that the proposed scheme can make LTE-U and WIFI coexist well in the same frequency band and achieve a better system performance.

Key words: LTE-unlicensed, listen before talk, coexistence scheme, channel access mechanism

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