Chapter Transport Protocol Performance and Impact on QoS while on the Move in Current and Future Low Latency Deployments

• প্রধান লেখক: Liberal, Fidel (auth)
• অন্যান্য লেখক: Oscar Fajardo, Jose (auth), Atxutegi, Eneko (auth)
• বিন্যাস: বৈদ্যুতিক গ্রন্থের অধ্যায়
• ভাষা: ইংরেজি
• প্রকাশিত: InTechOpen 2018
• বিষয়গুলি: Communications engineering / telecommunications; transport protocols, performance, mobility, 4G, low latency, 5G
• অনলাইন ব্যবহার করুন: OAPEN Library: download the publication; OAPEN Library: description of the publication

সংক্ষিপ্ত

Transport protocols and mobile networks have evolved independently leading to a lack of adaptability and quality of service (QoS) degradation while running under the variability circumstances present in cellular access. This chapter evaluates the performance of state-of-the-art transmission control protocol (TCP) implementations in challenging mobility scenarios under 4G latencies and low delays that model the proximity service provisioning of forthcoming 5G networks. The evaluation is focused on selecting the most appropriate TCP flavor for each scenario taking into account two metrics: (1) the goodput-based performance and (2) a balanced performance metric that includes parameters based on goodput, delay and retransmitted packets. The results show that mobility scenarios under 4G latencies require more aggressive TCP solutions in order to overcome the high variability in comparison with low latency conditions. Bottleneck Bandwidth and Round-Trip Time-RTT (BBR) provides better scalability than others and Illinois is more capable of sustaining the goodput with big variability between consecutive samples. Besides, CUBIC performs better in lower available capacity scenarios and regarding the balanced metric. In reduced end-to-end latencies, the most suitable congestion control algorithms (CCAs) to maximize the goodput are NewReno (low available capacity) and CUBIC (high available capacity) when moving with continuous capacity increases. Additionally, BBR shows a balanced and controlled behavior in most of the scenarios.

আইসবিএন

intechopen.71779

প্রবেশাধিকার

Open Access