Journal ArticleDOI
QoS-Aware User Association and Resource Allocation in LAA-LTE/WiFi Coexistence Systems
TLDR
A flexible coexistence framework is proposed using the listen-before-talk mechanism, based on which the QoS metrics of LAA-LTE and WiFi systems are quantified and an efficient algorithm called successive user removal is proposed.Abstract:
The licensed-assisted access-based long term evolution (LAA-LTE) is a promising solution to provide enhanced LTE services by sharing unlicensed bands with WiFi systems. However, the intense contention with the incumbent WiFi system makes it challenging for the LAA-LTE system to support guaranteed quality-of-service (QoS) for the users. This paper is interested in the QoS-aware LAA-LTE/WiFi coexistence system. We first propose a flexible coexistence framework using the listen-before-talk mechanism, based on which the QoS metrics of LAA-LTE and WiFi systems are quantified. Then, a joint user association and resource allocation problem is formulated, which aims to maximize the number of QoS-preferred users supported by LAA-LTE, while protecting the WiFi users. The considered optimization problem is equivalently decomposed into two subproblems, the sum-power minimization problem and the user association problem. For the first subproblem, the deep-cut ellipsoid method is adopted to optimize the LAA-LTE transmission time, subcarrier assignment, and power allocation. For the latter one, an efficient algorithm called successive user removal is proposed. The simulation results have demonstrated the effectiveness of the proposed scheme, based on which the tradeoff among different QoS metrics in the coexistence system is observed.read more
Citations
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Journal ArticleDOI
Real-Time and Reliable Industrial Control Over Wireless LANs: Algorithms, Protocols, and Future Directions
TL;DR: This paper presents several major solutions that tackled this issue to achieve real-time and reliability guarantees in wireless networked control systems, capitalizing on the strong efforts devoted to the adoption of IEEE 802.11 physical layer (PHY) technologies.
Journal ArticleDOI
Intelligent Sharing for LTE and WiFi Systems in Unlicensed Bands: A Deep Reinforcement Learning Approach
TL;DR: Simulation results show that the performance of the proposed intelligent scheme can approach that of the genie-aided exhaustive search algorithm, which needs the perfect knowledge of WiFi traffic demands through massive signalling exchanges and is of high computational complexity.
Journal ArticleDOI
Joint Task Offloading and QoS-Aware Resource Allocation in Fog-Enabled Internet-of-Things Networks
TL;DR: A QoS-aware resource allocation scheme, which jointly considers the association between fog nodes (FNs) and IDs, transmission and computing resource allocation to optimize the offloading decisions while minimizing the network overhead is proposed.
Journal ArticleDOI
Resource allocation trends for ultra dense networks in 5G and beyond networks: A classification and comprehensive survey
Nidhi Sharma,Krishan Kumar +1 more
TL;DR: A detailed survey of resource allocation approaches for UDNs in 5G and beyond networks is provided and the main difficulties of the resource allocation process in the wireless network are alleviated.
Journal ArticleDOI
Optimal Resource Allocation for Multicarrier NOMA in Short Packet Communications
TL;DR: The effective-throughput is used as the performance metric to evaluate the tradeoff between the transmission rate and the decoding error rate and a low-complexity algorithm based on the principles of block coordinate descent (BCD) and concave-convex procedure is proposed.
References
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