IEEE journal on selected areas in communications : a publication of the IEEE Communications Society最新文献_第8页

QoE-Optimized MultiPath Scheduling for Video Services in Large-Scale Peer-to-Peer CDNs 大规模对等 CDN 中视频服务的 QoE 优化多路径调度

IEEE journal on selected areas in communications : a publication of the IEEE Communications Society Pub Date : 2025-01-13 DOI: 10.1109/JSAC.2025.3528809

Dehui Wei;Jiao Zhang;Xiang Liu;Haozhe Li;Zhichen Xue;Tao Huang;Linshan Jiang;Jialin Li

{"title":"QoE-Optimized MultiPath Scheduling for Video Services in Large-Scale Peer-to-Peer CDNs","authors":"Dehui Wei;Jiao Zhang;Xiang Liu;Haozhe Li;Zhichen Xue;Tao Huang;Linshan Jiang;Jialin Li","doi":"10.1109/JSAC.2025.3528809","DOIUrl":"10.1109/JSAC.2025.3528809","url":null,"abstract":"Video content providers such as Douyin implement Peer-to-Peer Content Delivery Networks (PCDNs) to reduce the costs associated with Content Delivery Networks (CDNs) while still maintaining optimal user-perceived quality of experience (QoE). PCDNs rely on the remaining resources of edge devices, such as edge access devices and hosts, to store and distribute data with a Multiple-Server-to-One-Client (MS2OC) communication pattern. MS2OC parallel transmission pattern suffers from severe data out-of-order issues. PCDNs offer significant cost savings by using multiple low-cost edge devices. However, due to its unique characteristics, including pull-based streaming transmission, many heterogeneous paths, and large receiving buffers, directly applying existing schedulers designed for Multipath TCP (MPTCP) to PCDN fails to meet the two goals of high aggregate bandwidth and low end-to-end delivery latency. To tackle this issue, we provide a detailed overview of Douyin’s self-developed PCDN video transmission system and introduce the first QoE-enhanced packet-level scheduler for PCDN systems, named Pscheduler. Pscheduler evaluates path quality with a congestion-control-decoupled algorithm and employs our proposed path-pick-packet method for data distribution, ensuring a smooth video playback experience. Additionally, we propose a redundant transmission algorithm to enhance task download speeds for segmented video transmission. Our extensive online A/B tests, involving 100,000 Douyin users generating tens of millions of video data points, demonstrate that Pscheduler achieves an average improvement of 60% in goodput, a 20% reduction in data delivery waiting time, and a 30% reduction in rebuffering rates. Furthermore, we conducted simulation experiments that further validate the effectiveness of Pscheduler, confirming its improvements in performance metrics under various network conditions.","PeriodicalId":73294,"journal":{"name":"IEEE journal on selected areas in communications : a publication of the IEEE Communications Society","volume":"43 2","pages":"563-576"},"PeriodicalIF":0.0,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142974643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Connectivity Preserving Graph Sequences for Routing Arborescence Construction 用于路由 Arborescence 构建的连接性保存图序列

IEEE journal on selected areas in communications : a publication of the IEEE Communications Society Pub Date : 2025-01-13 DOI: 10.1109/JSAC.2025.3528812

János Tapolcai;Péter Babarczi;Balázs Brányi;Pin-Han Ho;Lajos Rónyai

{"title":"Connectivity Preserving Graph Sequences for Routing Arborescence Construction","authors":"János Tapolcai;Péter Babarczi;Balázs Brányi;Pin-Han Ho;Lajos Rónyai","doi":"10.1109/JSAC.2025.3528812","DOIUrl":"10.1109/JSAC.2025.3528812","url":null,"abstract":"Fast reroute (FRR) is among the fastest survivable routing approaches in packet-switched networks, because the routers are equipped with a resilient routing table in advance such that the packets can be rerouted instantly upon failures solely relying on local information, i.e., without notification messages. However, designing the routing algorithm for FRR is challenging as the number of possible sets of failed network links can be extremely high, while the algorithm should keep track of which routers are aware of the failure. Therefore, FRR methods often rely on spanning arborescences, which provide multiple disjoint failover paths up to the global connectivity of the network. In this paper, we propose a generic algorithmic framework that theoretically increases the number of failover paths to the local connectivity between each node and the root by extending an efficient connectivity preserving operation from graph theory – called edge splitting-off – to decompose the network topology node-by-node, and use Integer Linear Programs (ILPs) on these partial subproblems to build routing arborescences in the reverse direction for the original topology. Although our practical implementation cannot reach the local connectivity in all instances, we demonstrate through simulations that it still outperforms the state-of-the-art FRR mechanisms and provides better resilience with shorter paths in the arborescences.","PeriodicalId":73294,"journal":{"name":"IEEE journal on selected areas in communications : a publication of the IEEE Communications Society","volume":"43 2","pages":"484-494"},"PeriodicalIF":0.0,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142974645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fast Reoptimization With Only a Few Changes: Enhancing Tactical Traffic Engineering With Segment Routing Midpoint Optimization 快速再优化与只有少数变化-增强战术交通工程与段路由中点优化

IEEE journal on selected areas in communications : a publication of the IEEE Communications Society Pub Date : 2025-01-13 DOI: 10.1109/JSAC.2025.3528811

Alexander Brundiers;Timmy Schüller;Nils Aschenbruck

{"title":"Fast Reoptimization With Only a Few Changes: Enhancing Tactical Traffic Engineering With Segment Routing Midpoint Optimization","authors":"Alexander Brundiers;Timmy Schüller;Nils Aschenbruck","doi":"10.1109/JSAC.2025.3528811","DOIUrl":"10.1109/JSAC.2025.3528811","url":null,"abstract":"Recent advancements in the context of Segment Routing (SR) have shown that the Midpoint Optimization (MO) concept enables a substantial reduction in the number of SR policies required to implement Traffic Engineering (TE) configurations. In this paper, we demonstrate that this concept can also be applied to the use case of tactical TE to considerably reduce the number of network changes required to react to critical events, thereby facilitating lower provisioning times and a generally improved time-to-repair. For this, we develop MOLS, a Local Search-based optimization routine that is able to provide close to optimal solutions within just a couple of seconds. The latter is shown based on extensive evaluations featuring various real-world topologies, including data from the backbone of a Tier-1 Internet Service Provider. Compared to state-of-the-art approaches relying on conventional SR, MOLS achieves similar or better solution quality while requiring substantially fewer configuration changes to implement the respective solutions. Furthermore, MOLS is able to resolve over 99% of overutilization scenarios resulting from different failure types, mostly within sub-second fashion and with an exceptionally small number of changes. Lastly, we also extend MOLS to adhere to specified latency bounds while even fixing initially violated ones.","PeriodicalId":73294,"journal":{"name":"IEEE journal on selected areas in communications : a publication of the IEEE Communications Society","volume":"43 2","pages":"495-509"},"PeriodicalIF":0.0,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142974650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

IEEE Communications Society Information IEEE 通信学会信息

IEEE journal on selected areas in communications : a publication of the IEEE Communications Society Pub Date : 2024-12-19 DOI: 10.1109/JSAC.2024.3513768

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IEEE Journal on Selected Areas in Communications Publication Information IEEE通讯出版信息选定领域期刊

IEEE journal on selected areas in communications : a publication of the IEEE Communications Society Pub Date : 2024-12-19 DOI: 10.1109/JSAC.2024.3513766

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Guest Editorial: Integrated Ground-Air-Space Wireless Networks for 6G Mobile—Part II 嘉宾评论：6G移动综合地空无线网络第二部分

IEEE journal on selected areas in communications : a publication of the IEEE Communications Society Pub Date : 2024-12-19 DOI: 10.1109/JSAC.2024.3468668

Yue Xiao;Ming Xiao;Mohamed-Slim Alouini;Akram Al-Hourani;Stefano Cioni

引用次数: 0

Corrections to “Coverage Rate Analysis for Integrated Sensing and Communication Networks” 对 "综合传感与通信网络的覆盖率分析 "的更正

IEEE journal on selected areas in communications : a publication of the IEEE Communications Society Pub Date : 2024-12-19 DOI: 10.1109/JSAC.2024.3487364

Xu Gan;Chongwen Huang;Zhaohui Yang;Xiaoming Chen;Jiguang He;Zhaoyang Zhang;Chau Yuen;Yong Liang Guan;Mérouane Debbah

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2024 Index IEEE Journal on Selected Areas in Communications Vol. 42 2024索引IEEE杂志在选定领域的通信卷42

IEEE journal on selected areas in communications : a publication of the IEEE Communications Society Pub Date : 2024-12-13 DOI: 10.1109/JSAC.2024.3517193

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Cell-Free Massive Non-Terrestrial Networks 无蜂窝大规模非地面网络

IEEE journal on selected areas in communications : a publication of the IEEE Communications Society Pub Date : 2024-12-09 DOI: 10.1109/JSAC.2024.3460080

Seungnyun Kim;Jiao Wu;Byonghyo Shim;Moe Z. Win

{"title":"Cell-Free Massive Non-Terrestrial Networks","authors":"Seungnyun Kim;Jiao Wu;Byonghyo Shim;Moe Z. Win","doi":"10.1109/JSAC.2024.3460080","DOIUrl":"10.1109/JSAC.2024.3460080","url":null,"abstract":"As a means to provide ubiquitous connectivity across the ground-air-space 3D network, low Earth orbit (LEO) satellite mega-constellation systems comprising thousands of LEO satellites have attracted significant interest from both academia and industry recently. One major issue of LEO mega-constellation systems is the frequent handovers between satellites and beams, causing an increase in communication latency and deterioration of quality of service (QoS). In this paper, we propose a user-centric cooperative communication framework for next generation (xG) LEO satellite mega-constellation systems. In the proposed framework, a group of LEO satellites simultaneously serve all the user equipments (UEs) using the same timefrequency resources. By dynamically organizing the clusters of serving satellites and coordinating their joint transmission based on statistical channel state information (CSI), the handover frequency and inter-satellite interference can be reduced effectively, thereby achieving significant enhancements in the spectral efficiency and coverage probability. From the achievable rate analysis and extensive simulations on realistic xG LEO satellite communication environments, we show that the proposed scheme substantially improves the spectral efficiency and coverage over the conventional beam-centric systems.","PeriodicalId":73294,"journal":{"name":"IEEE journal on selected areas in communications : a publication of the IEEE Communications Society","volume":"43 1","pages":"201-217"},"PeriodicalIF":0.0,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142796844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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IEEE Communications Society Information IEEE 通信学会信息

IEEE journal on selected areas in communications : a publication of the IEEE Communications Society Pub Date : 2024-11-25 DOI: 10.1109/JSAC.2024.3497857

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