TY - GEN
T1 - Enhancing Transmission Performance in the LAA and WiFi Heterogeneous Network
AU - Huang, Chin Ya
AU - Huang, Chen Hao
AU - Sheu, Shiann Tsong
AU - Chiang, Te Wei
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/7/2
Y1 - 2018/7/2
N2 - The Listen-Before-Talk (LBT) is the main procedure for Licensed Assisted Access (LAA) to accomplish fair and friendly coexistence with other operators or technologies operating over unlicensed spectrum. However, in LBT, the lack of coordination with the other existing systems brings challenges in sustaining performance in the coexistence of LAA and WiFi networks. Specifically, the hidden node situation (HNS) and exposed node situation (ENS) cannot be effectively handled when both LAA and WiFi attempt to access the unlicensed spectrum at the same time. Thus, transmission failure might occur and the network performance would be degraded. In order to mitigate the influences caused by HNS and ENS, based on LBT, a Give-And-Take (GAT) mechanism with the Listen-Before-Receive (LBR) procedure is proposed in this paper. With GAT, the LAA sender conditionally gives up or takes back transmission opportunities, and thus the unlicensed spectrum could be efficiently shared between LAA and WiFi in terms of energy usage and throughput. Evaluation results show that the proposed GAT could conditionally obtain better network performance comparing to legacy LBT.
AB - The Listen-Before-Talk (LBT) is the main procedure for Licensed Assisted Access (LAA) to accomplish fair and friendly coexistence with other operators or technologies operating over unlicensed spectrum. However, in LBT, the lack of coordination with the other existing systems brings challenges in sustaining performance in the coexistence of LAA and WiFi networks. Specifically, the hidden node situation (HNS) and exposed node situation (ENS) cannot be effectively handled when both LAA and WiFi attempt to access the unlicensed spectrum at the same time. Thus, transmission failure might occur and the network performance would be degraded. In order to mitigate the influences caused by HNS and ENS, based on LBT, a Give-And-Take (GAT) mechanism with the Listen-Before-Receive (LBR) procedure is proposed in this paper. With GAT, the LAA sender conditionally gives up or takes back transmission opportunities, and thus the unlicensed spectrum could be efficiently shared between LAA and WiFi in terms of energy usage and throughput. Evaluation results show that the proposed GAT could conditionally obtain better network performance comparing to legacy LBT.
KW - Exposed Node Problem (ENP)
KW - Hidden Node Problem (HNP)
KW - Licensed Assisted Access (LAA)
KW - Listen-Before-Receive (LBR)
KW - Listen-Before-Talk (LBT)
KW - Long Term Evolution (LTE)
UR - http://www.scopus.com/inward/record.url?scp=85064895737&partnerID=8YFLogxK
U2 - 10.1109/VTCFall.2018.8690895
DO - 10.1109/VTCFall.2018.8690895
M3 - 會議論文篇章
AN - SCOPUS:85064895737
T3 - IEEE Vehicular Technology Conference
BT - 2018 IEEE 88th Vehicular Technology Conference, VTC-Fall 2018 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 88th IEEE Vehicular Technology Conference, VTC-Fall 2018
Y2 - 27 August 2018 through 30 August 2018
ER -