Analysis of Finite Buffer in Two-Way Relay: A Queueing Theoretic Point of View

Ni, Wei; Zhang, Andrew; Fang, Zhaoxi; Liu, Ren Ping; Guo, Y. Jay

doi:10.1109/tvt.2017.2774810

Cited by 8 publications

(12 citation statements)

References 19 publications

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“…In [31], a successive relaying-based network with relay nodes (RNs) having finite data buffer and limited rechargeable battery is considered. The impact of buffer size of relay on throughput was studied in [33], whereas relay selection was not analyzed.…”

Section: Related Workmentioning

confidence: 99%

Throughput Maximization for Two-Way Buffer-Aided and Energy-Harvesting Enabled Multi-Relay Networks

Zeng

Xiao

et al. 2019

IEEE Access

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For years, relay communications have been witnessed to extend the network coverage and improve the throughput and reliability of wireless systems. In this paper, we focus on throughput maximization for the two-way buffer-aided relay network with finite data buffers and limited energy battery, wherein relays have no fixed power supply and they replenish energy from the Radio Frequency (RF) signal radiated by source nodes. Specifically, by jointing the time switching and energy splitting for RF energy harvesting, we introduce a three time-subslot transmission model to balance the energy storage and the energy consumption for communication. On top of this transmission model, we formulate an optimization problem for throughput maximization of relay network. We purposely convert the non-convex optimization problem into a convex one by carefully decoupling and relaxing. Further, we theoretically derive the maximum throughput and apply an iterative algorithm to achieve the suboptimal solution based on relay selection and power allocation. In addition to solving the no-delay limited throughput maximization problem, we put forward the solution of the delay limited transmission in the two-way buffer-aided multi-relay networks. Extensive simulations have been conducted to demonstrate that our proposed strategy is able to significantly improve the sum-throughput under transmission energy and delay constraints. INDEX TERMS Two-way relay networks, buffer-aided, energy harvesting, dual optimization.

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Section: Related Workmentioning

confidence: 99%

Throughput Maximization for Two-Way Buffer-Aided and Energy-Harvesting Enabled Multi-Relay Networks

Zeng

Xiao

et al. 2019

IEEE Access

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“…This performance degradation is caused by the saturation phenomenon in VEC systems, where the neighbour vehicles are overloaded by the offloaded tasks. However, it is worth noting that compared with the results reported in the literature [39] [40] [41], which suffer from accuracy loss of 20-35% under saturated working scenarios, the results and accuracy achieved by the proposed model are superior.…”

Section: Impact Of the Dynamic Offloading Strategiesmentioning

confidence: 77%

Performance Modelling and Quantitative Analysis of Vehicular Edge Computing With Bursty Task Arrivals

Miao

Min

Zhang

et al. 2023

IEEE Trans. on Mobile Comput.

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The quantitative performance analysis plays a critical role in assessing the capability of Vehicular Edge Computing (VEC) systems to meet the requirements of vehicular applications. However, developing accurate analytical models for VEC systems is extremely challenging due to the unique features of intelligent vehicular applications. Specifically, recent work revealed that the tasks generated by intelligent vehicular applications exhibit a high degree of burstiness, rendering the existing models that were designed based on the assumption of the non-bursty Poisson process unsuitable for VEC systems. To fill this gap, we developed an original analytical model to investigate the performance of VEC systems with bursty task arrivals. To facilitate vehicle cooperation, a new priority-based resource allocation scheme is exploited to schedule the tasks of vehicular applications, which are modelled by a Markov Modulated Poisson Process (MMPP). Next, a multi-state Markov chain is established to investigate the impact of load sharing strategy on the performance of VEC systems. Then, the end-to-end transmission latency is derived based on the proposed model. Comprehensive experiments are conducted to validate the accuracy of this analytical model under various system configurations. Furthermore, the developed model is used as a cost-effective tool to investigate the performance bottleneck of VEC systems.

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“…Several authors explore the aforementioned topics through new proposals or global reviews of existing ones [31][32][33][34][35][36][37][38][39][40][41][42][43][44]. For example, in a one-way communication system, the authors in [31] carry out a Markovian analysis of a multiple access system (i.e., several source users sending information for a single destination) assisted by relay.…”

Section: Related Workmentioning

confidence: 99%

“…PNC allows, at the medium access control (MAC) level, for two or more packets to be able to be combined before being sent [37], which was also implemented in a conventional TWRN in [38]. In contrast to the conventional TWRN model [38], in [39], the authors show the benefits of a buffer-assisted TWRN where packets are XOR encoded before broadcasting the messages. In addition, in [40,47], the authors carry out exhaustive research work on the importance of coding the message before transmitting it with different transmission protocols.…”

Section: Related Workmentioning

confidence: 99%

Buffer-Aided Relaying Strategies for Two-Way Wireless Networks

et al. 2022

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The energy and time efficiency of wireless sensor networks (WSNs) is frequently affected by the low reliability of their links. To mitigate the outage probability, cooperation topologies are used. However, these topologies have particular challenges since the relay consumes energy in assisting a foreign communication, and the successful transmission in each direction is conditioned to the availability of the two segments involved in the communication. To overcome the temporary unavailability of a link, the use of buffers in the relay has been proposed, but energy and time efficiency remain a challenge for basic configurations. We propose two-way buffer-aided relaying strategies that exploit the presence of buffers in the different nodes that participate in the communication, as well as the efficient use of buffer capacity. The proposed strategies make the decision to forward the messages in one of the communication directions or broadcast coded messages based on buffer and channel state information. Firstly, we evaluate the impact of considering the use of buffers in the transmitter nodes. Then, we propose and evaluate the impact of the full and joint use of the entire buffer capacity to assist communication in both directions. Finally, we evaluate the performance of a system that exploits both the use of full and joint buffering and the presence of buffering in the transmitter. The results show that better performance, in terms of outage probability, is obtained by the third strategy; since it allows the buffer capacity to be exploited to a greater extent in the most urgent direction at each moment, as well as to select the start of each transmission to a viable communication opportunity. This represents a notable benefit in terms of energy and time efficiency for WSNs since unnecessary transmission of information is avoided, the number of idle slots decreases, and the amount of information per unit of time and energy increases.

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Analysis of Finite Buffer in Two-Way Relay: A Queueing Theoretic Point of View

Cited by 8 publications

References 19 publications

Throughput Maximization for Two-Way Buffer-Aided and Energy-Harvesting Enabled Multi-Relay Networks

Throughput Maximization for Two-Way Buffer-Aided and Energy-Harvesting Enabled Multi-Relay Networks

Performance Modelling and Quantitative Analysis of Vehicular Edge Computing With Bursty Task Arrivals

Buffer-Aided Relaying Strategies for Two-Way Wireless Networks

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