Exploring Carrier Sense Multiple Access with Collision Avoidance Techniques for Resource Sharing in Broadband Power Line Communications
Exploring Carrier Sense Multiple Access with Collision Avoidance Techniques for Resource Sharing in Broadband Power Line Communications
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DOI：
10.4314/tjs.v48i2.8
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发表时间：
2022-06
期刊：
影响因子：
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通讯作者：
G. Luwemba;M. Kissaka;Prosper Mafole
中科院分区：
文献类型：
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作者：
G. Luwemba;M. Kissaka;Prosper Mafole
家庭网络电力线通信（PLC）中的资源共享受到信道分配技术的限制，信道分配技术决定谁有权获得发送数据的访问权限。信道分配技术包括无竞争和基于竞争。前者由于确定性的往返时间而需要高度同步。此外，基于竞争的技术利用CSMA/CA技术，允许网络中的站点竞争信道访问，并且适合分散的网络拓扑。然而，获得访问所需的站点数量与系统效率之间存在权衡。虽然已经对仅允许一个用户进行传输的 CSMA/CA 资源共享技术进行了一些研究，但在多用户访问以优化系统效率和减少网络冲突方面所做的工作却很少。当前研究的目的是回顾用于资源共享的 CSMA/CA 技术，以提高电力线通信的系统效率。在进行这项研究时，使用了系统的文献综述方法来评估不同的相关工作并确定允许多用户通道访问的最合适的方法。该研究进一步证明了多通道访问对系统效率的影响。此外，该研究还为未来的研究提供了建议。关键词：CSMA/CA；介质访问控制；正交频分多址；电源线；资源共享；
A resource sharing in power line communications (PLC) for the home network is restricted by the channel assignment techniques which decide who has the right to gain access to send data. The channel assignment techniques include contention-free and contention-based. The former requires high synchronization due to the deterministic round-trip time. Besides, contention-based utilizes CSMA/CA techniques that allow stations in a network to compete for channel access and are suitable for decentralized network topology. However, a trade-off exists between the number of stations required to gain access versus system efficiency. Whilst some research has been carried out on CSMA/CA resource sharing techniques that allow only one user to transmit, there is very little work done on multiuser access to optimize system efficiency and reduce collisions in a network. The purpose of the current study was to review the CSMA/CA techniques for resource sharing to improve system efficiency in power line communications. In carrying out this study, a systematic literature review methodology to evaluate different related works and determine the most suitable approach to allow multiuser channel access was used. The study further demonstrated the impact multichannel access has on system efficiency. In addition, the study provides recommendations for future research. Keywords: CSMA/CA; Medium access control; OFDMA; power line; resource sharing;