Caching and D2D Assisted Wireless Emergency Communications Networks with Statistical QoS Provisioning

作     者：Jianyu Wang Wenchi Cheng Hailin Zhang Jianyu Wang;Wenchi Cheng;Hailin Zhang

作者机构：State Key Laboratory of Integrated Services NetworksXidian UniversityXi’an 710071China 

出 版 物：《Journal of Communications and Information Networks》 (通信与信息网络学报（英文）)

年 卷 期：2020年第5卷第3期

页      面：282-293页

核心收录：

学科分类：080904[工学-电磁场与微波技术] 0810[工学-信息与通信工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080402[工学-测试计量技术及仪器] 0804[工学-仪器科学与技术] 081001[工学-通信与信息系统] 

基　　金：This work was supported in part by National Natural Science Foundation of China(Nos.61771368 and 61671347) the Young Elite Scientists Sponsorship Program by CAST(No.2016QNRC001) the Youth Talent Support Fund of Science and Technology of Shaanxi Province(No.2018KJXX-025) Part of this work has been accepted by the IEEE Conference on Computer Communications Workshops(INFOCOM Workshop on Intelligent Wireless Emergency Communications Networks),Toronto,Canada,2020 

主　　题：unmanned aerial vehicles(UAVs) device-todevice(D2D) emergency wireless networks quality-ofservice(QoS) caching placement effective capacity 

摘      要：Along with natural disasters,the destruction of communication infrastructures leads to the congestion or failure of communication *** aerial vehicles(UAVs),which are with a high flexibility,can be employed as temporary base stations to establish emergency *** relieve the backhaul burden of UAVs,some imperative contents can be cached by terrestrial cache-enabled rescuers(CERs)and provide for victims with device-to-device(D2D)*** support the effectiveness and timeliness of emergency communication,the delay-bounded quality-of-service(QoS)requirement and network throughput are desired to be comprehensively considered,which imposes a new challenge for caching placement and CER *** this paper,we focus on joint caching placement and CER deployment to maximize the effective capacity subject to delay-bounded QoS *** overall non-convex problem is transformed into the caching placement and the CER deployment ***,we develop the QoS-aware caching placement scheme with fixed CER deployment density and obtain the QoS-aware CER deployment density with fixed caching *** on the block-coordinate descent method,we also propose the joint caching placement and CER deployment scheme,which can not only effectively enhance average effective capacity but also guarantee the delay-bounded QoS ***,numerical simulations are conducted to show the performances of the proposed schemes.