TY - JOUR
T1 - A User-Centric Cooperative Scheme for UAV-Assisted Wireless Networks in Malfunction Areas
AU - Sun, Yanshi
AU - Ding, Zhiguo
AU - Dai, Xuchu
N1 - Funding Information:
The work of Y. Sun and X. Dai was supported by the National Natural Science Foundation of China under Grant 61971391. The work of Z. Ding was supported by the UK EPSRC under grant number EP/L025272/1 and by H2020-MSCA-RISE-2015 under grant number 690750.
Funding Information:
Manuscript received May 30, 2019; revised August 17, 2019; accepted September 25, 2019. Date of publication October 1, 2019; date of current version December 17, 2019. The work of Y. Sun and X. Dai was supported by the National Natural Science Foundation of China under Grant 61971391. The work of Z. Ding was supported by the UK EPSRC under grant number EP/L025272/1 and by H2020-MSCA-RISE-2015 under grant number 690750. This article was presented in part at the 2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring) [1]. The associate editor coordinating the review of this article and approving it for publication was B. Maham.
Publisher Copyright:
© 1972-2012 IEEE.
PY - 2019/12
Y1 - 2019/12
N2 - Due to disaster or other reasons, communication interruption may occur in malfunction areas where all ground base stations (BSs) break down. This paper intends to study the application of deploying unmanned aerial vehicle (UAV) to such a malfunction area for recovering communications. Particularly, the malfunction area is modeled as a disc, outside which the ground BSs can still work normally, and a user-centric cooperative scheme is proposed in this paper to serve the UEs in such a malfunction area. According to the user equipment's (UE's) connections to the UAV and the nearest ground BS, the malfunction area is divided into three regions, namely the UAV region, the cooperation region and the nearest ground BS region, in which the UEs are served by the UAV only, both the UAV and the nearest ground BS, and the nearest ground BS, respectively. By using tools from stochastic geometry, the distribution of the distance from a UE to its nearest ground BS and the laplace transform for the interference from the ground BSs farther than the nearest ground BS are characterized, which is more challenging compared to the conventional scenarios in which only terrestrial BSs are considered. Furthermore, an expression for the coverage probability achieved by a typical UE is obtained. In order to provide a fair comparison, the normalized spectral efficiency (NSE) is defined by taking both system throughput and the number of serving BSs into consideration. Numerical results are presented to verify the accuracy of the analytical results and also to demonstrate the superior performance of the proposed scheme.
AB - Due to disaster or other reasons, communication interruption may occur in malfunction areas where all ground base stations (BSs) break down. This paper intends to study the application of deploying unmanned aerial vehicle (UAV) to such a malfunction area for recovering communications. Particularly, the malfunction area is modeled as a disc, outside which the ground BSs can still work normally, and a user-centric cooperative scheme is proposed in this paper to serve the UEs in such a malfunction area. According to the user equipment's (UE's) connections to the UAV and the nearest ground BS, the malfunction area is divided into three regions, namely the UAV region, the cooperation region and the nearest ground BS region, in which the UEs are served by the UAV only, both the UAV and the nearest ground BS, and the nearest ground BS, respectively. By using tools from stochastic geometry, the distribution of the distance from a UE to its nearest ground BS and the laplace transform for the interference from the ground BSs farther than the nearest ground BS are characterized, which is more challenging compared to the conventional scenarios in which only terrestrial BSs are considered. Furthermore, an expression for the coverage probability achieved by a typical UE is obtained. In order to provide a fair comparison, the normalized spectral efficiency (NSE) is defined by taking both system throughput and the number of serving BSs into consideration. Numerical results are presented to verify the accuracy of the analytical results and also to demonstrate the superior performance of the proposed scheme.
KW - cooperative communication
KW - coverage probability
KW - emergence communication
KW - Stochastic geometry (SG)
KW - unmanned aerial vehicle (UAV)
UR - http://www.scopus.com/inward/record.url?scp=85077017854&partnerID=8YFLogxK
U2 - 10.1109/TCOMM.2019.2944911
DO - 10.1109/TCOMM.2019.2944911
M3 - Article
AN - SCOPUS:85077017854
SN - 0090-6778
VL - 67
SP - 8786
EP - 8800
JO - IEEE Transactions on Communications
JF - IEEE Transactions on Communications
IS - 12
M1 - 8854119
ER -