


2018年將成為5G實現大規模試商用的“元年”,2018年也是實現萬物互聯大發展的“元年”。作為移動通信與物聯網發展最重要的基礎資源——無線電頻譜將迎來新的巨大挑戰。中國將充分發揮其在全球無線寬帶市場的引領作用,我國己經確定了5G中低端頻譜配置,也規劃了5G的毫米波頻段,但仍面臨著頻譜資源科學高效利用、動態頻率共享、頻率評估、低端移動通信頻譜“重耕”、頻譜資源的市場化配置以及無線電環境保護新課題等一系列的嚴峻挑戰。
——國家無線電頻譜管理研究所何廷潤
【摘 要】
分析WRC對5G新增頻段的指配,給出國內5G分別在中低和高頻段的狀態。區分這兩種頻段的協同定位,給出不同頻段間的兼容性研究內容,并詳細地對5G頻段的衰減特性進行了評估。在此基礎上,結合目前國內三大運營商的頻譜現狀,考慮了5G的頻譜重耕,并重點針對2.6 GHz頻段,結合組網的差異化進行分析。所有結果均可給今后國內5G的試驗推動提供一定的參考建議。
【關鍵詞】5G;WRC;衰減;頻譜重耕
Analysis and Advices on 5G Frequency Allocation in China
XIAO Qinghua
[Abstract] The allocation of newly added 5G frequency band by WRC is analyzed, and the domestic allocation status of low& medium band and high frequency band is presented. Based on the co-location of these two bands, the research contents of compatibility between different bands are presented. The attenuation characteristics at 5G bands are evaluated. Based on the results, we considered the 5G frequency re-farming according to the frequency allocation status of domestic network operators. Emphatically, 2.6 GHz frequency band combined with the differentiated networking is analyzed. All results can provide referential suggestion to the experimental promotion of domestic 5G in the future.
[Key words]5G; WRC; attenuation; frequency re-farming
1 引言
5G[1]是面向2020年以后移動通信的需求而發展的新一代移動通信系統,該系統將滿足人們超高連接數密度、超高流量密度以及超高移動性的要求,能夠為用戶提供包括車聯網、虛擬現實、云桌面、智能家居控制等極致的業務體驗。可以預測,下一代的信息網絡將無處不在,無時不在。為此,5G構建了eMBB(Enhanced Mobile Broadband,增強的移動寬帶)、uRLLC(Ultra-Reliable and Low Latency Communication,高可靠和超低時延的通信)和mMTC(Massive Machine Type of Communication,大規模機器通信)等三大類應用場景[2]。為滿足上述愿景,5G需要統籌考慮涵蓋低、中、高頻段在內的全頻段。……