Lixing Chen

Lixing Chen
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Lixing Chen

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Computer Science - Networking and Internet Architecture (4)
Mathematics - Information Theory (3)
Computer Science - Information Theory (3)
Computer Science - Computer Science and Game Theory (3)
Computer Science - Distributed; Parallel; and Cluster Computing (2)
Computer Science - Learning (1)

Publications Authored By Lixing Chen

Small cell base stations (SBSs) endowed with cloud-like computing capabilities are considered as a key enabler of edge computing (EC), which provides ultra-low latency and location-awareness for a variety of emerging mobile applications and the Internet of Things. However, due to the limited computation resources of an individual SBS, providing computation services of high quality to its users faces significant challenges when it is overloaded with an excessive amount of computation workload. In this paper, we propose collaborative edge computing among SBSs by forming SBS coalitions to share computation resources with each other, thereby accommodating more computation workload in the edge system and reducing reliance on the remote cloud. Read More

The (ultra-)dense deployment of small-cell base stations (SBSs) endowed with cloud-like computing functionalities paves the way for pervasive mobile edge computing (MEC), enabling ultra-low latency and location-awareness for a variety of emerging mobile applications and the Internet of Things. To handle spatially uneven computation workloads in the network, cooperation among SBSs via workload peer offloading is essential to avoid large computation latency at overloaded SBSs and provide high quality of service to end users. However, performing effective peer offloading faces many unique challenges in small cell networks due to limited energy resources committed by self-interested SBS owners, uncertainties in the system dynamics and co-provisioning of radio access and computing services. Read More

Merging mobile edge computing with the dense deployment of small cell base stations promises enormous benefits such as a real proximity, ultra-low latency access to cloud functionalities. However, the envisioned integration creates many new challenges and one of the most significant is mobility management, which is becoming a key bottleneck to the overall system performance. Simply applying existing solutions leads to poor performance due to the highly overlapped coverage areas of multiple base stations in the proximity of the user and the co-provisioning of radio access and computing services. Read More

Merging Mobile Edge Computing (MEC), which is an emerging paradigm to meet the increasing computation demands from mobile devices, with the dense deployment of Base Stations (BSs), is foreseen as a key step towards the next generation mobile networks. However, new challenges arise for designing energy efficient networks since radio access resources and computing resources of BSs have to be jointly managed, and yet they are complexly coupled with traffic in both spatial and temporal domains. In this paper, we address the challenge of incorporating MEC into dense cellular networks, and propose an efficient online algorithm, called ENGINE (ENErgy constrained offloadINg and slEeping) which makes joint computation offloading and BS sleeping decisions in order to maximize the quality of service while keeping the energy consumption low. Read More

Device-to-device (D2D) computation offloading has recently been proposed to enhance mobile edge computing (MEC) performance by exploiting spare computing resources in proximity user devices, thereby alleviating computation burdens from the network infrastructure and enabling truly pervasive edge computing. A key challenge in this new mobile computing paradigm is how to provide self-interested users with incentives to participate in D2D computing. Although incentive mechanism design has been intensively studied in the literature, this paper considers a much more challenging yet much under-investigated problem in which user incentives are complexly coupled with security risks, which is extremely important since D2D-enhanced MEC systems are vulnerable to distributed attacks, such as distributed denial of service (DDoS) attacks, due to its autonomous nature. Read More