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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/15489

Title: Low-latency communication in LTE and WiFi using spatial diversity and encoding redundancy
Authors: YU, Yu
KUCERA, Stepan
LIM, Yuto
TAN, Yasuo
Keywords: Forward Packet-loss Protection
Data Delivery Latency Control
Spatial Diversity
Encoding Redundancy
Random Linear Codes
Multi-path TCP
Issue Date: 2018-04-01
Publisher: The Institute of Electronics, Information and Communication Engineers (IEICE)
Magazine name: IEICE Transactions on Communications
Volume: E101.B
Number: 4
Start page: 1116
End page: 1127
DOI: 10.1587/transcom.2017EBP3015
Abstract: In mobile and wireless networks, controlling data delivery latency is one of open problems due to the stochastic nature of wireless channels, which are inherently unreliable. This paper explores how the current best-effort throughput-oriented wireless services might evolve into latency-sensitive enablers of new mobile applications such as remote three-dimensional (3D) graphical rendering for interactive virtual/augmented-reality overlay. Assuming that the signal propagation delay and achievable throughput meet the standard latency requirements of the user application, we examine the idea of trading excess/federated bandwidth for the elimination of non-negligible delay of data re-ordering, caused by temporal transmission failures and buffer overflows. The general system design is based on (i) spatially diverse data delivery over multiple paths with uncorrelated outage likelihoods; and (ii) forward packet-loss protection (FPP), creating encoding redundancy for proactive recovery of intolerably delayed data without end-to-end retransmissions. Analysis and evaluation are based on traces of real life traffic, which is measured in live carrier-grade long term evolution (LTE) networks and campus WiFi networks, due to no such system/environment yet to verify the importance of spatial diversity and encoding redundancy. Analysis and evaluation reveal the seriousness of the latency problem and that the proposed FPP with spatial diversity and encoding redundancy can minimize the delay of re-ordering. Moreover, a novel FPP effectiveness coefficient is proposed to explicitly represent the effectiveness of FPP implementation.
Rights: Copyright (C) 2018 The Institute of Electronics, Information and Communication Engineers (IEICE). Yu YU, Stepan KUCERA, Yuto LIM, and Yasuo TAN, IEICE Transactions on Communications, E101.B(4), 2018, 1116-1127. http://dx.doi.org/10.1587/transcom.2017EBP3015
URI: http://hdl.handle.net/10119/15489
Material Type: publisher
Appears in Collections:b10-1. 雑誌掲載論文 (Journal Articles)

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