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Next-Generation Broadband Access Net...

Bhaumik, Partha.

Next-Generation Broadband Access Network Architectures and Services.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Next-Generation Broadband Access Network Architectures and Services.
作者:	Bhaumik, Partha.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, 2016
面頁冊數:	154 p.
附註:	Source: Dissertation Abstracts International, Volume: 77-10(E), Section: B.
附註:	Adviser: Biswanath Mukherjee.
Contained By:	Dissertation Abstracts International77-10B(E).
標題:	Computer science.
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10124417
ISBN:	9781339825250

Next-Generation Broadband Access Network Architectures and Services.
Bhaumik, Partha.

Next-Generation Broadband Access Network Architectures and Services. - Ann Arbor : ProQuest Dissertations & Theses, 2016 - 154 p.

Source: Dissertation Abstracts International, Volume: 77-10(E), Section: B.

Thesis (Ph.D.)--University of California, Davis, 2016.

Access networking has become an area of major research interest in recent times. Subscribers need high capacity as they consume triple-play services (voice, data, video). It is important to analyze the performance of current state-of-the-art access network technologies in supporting these services, as well as developing new cost-effective architectures that maximize the reuse of existing infrastructure.

ISBN: 9781339825250Subjects--Topical Terms:

199325
Computer science.

Next-Generation Broadband Access Network Architectures and Services.
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500 $a Source: Dissertation Abstracts International, Volume: 77-10(E), Section: B.
500 $a Adviser: Biswanath Mukherjee.
502 $a Thesis (Ph.D.)--University of California, Davis, 2016.
520 $a Access networking has become an area of major research interest in recent times. Subscribers need high capacity as they consume triple-play services (voice, data, video). It is important to analyze the performance of current state-of-the-art access network technologies in supporting these services, as well as developing new cost-effective architectures that maximize the reuse of existing infrastructure.
520 $a We study the performance of 10 Gbit/s Ethernet Passive Optical Network standard (10G-EPON), in providing Internet Protocol Television (IPTV) services. As video over IP gains popularity, there is a need for traffic modeling for such applications. Forecasting how streaming IPTV over a network will perform is challenging as the data rate of a video stream varies with scene, time, framerate, and encoding. Using video traces for such evaluation requires multiple traces to represent different scenarios and involves slow I/O-based operations, such as file reading. We explore several aspects of modeling IPTV traffic, and present a synthetic video trace generator that is fast, easy to implement, and closely resembles empirical IPTV traces. 10G-EPON can be a suitable option for IPTV vendors as it provides the high bandwidth needed by High Definition (HD) IPTV. We use the generated synthetic trace to evaluate the performance of 10G-EPON in streaming IPTV, based on number of parallel video streams supported, effects of degree of video compression, packet delay and jitter. We show that a 10G-EPON topology with a single Optical Line Terminal (OLT) can support many concurrent video channels at full high definition -- around 1400 and 500 at maximum and zero compressions -- with small buffer sizes (around 300 kilobytes) at the Optical Network Units (ONUs).
520 $a We investigate the challenges in designing the network architecture for running EPON Protocol over Coax -- EPoC in short -- the transparent extension of EPON over a cable operator's Hybrid Fiber-Coax (HFC) network. Such hybrid architectures are necessary because fiber cannot be always deployed up to the end-users' homes due to high cost of deployment, and needs to be terminated at the curb or basement of apartment buildings, creating a bottleneck segment. EPoC is strongly backed by both service operators and equipment vendors, who participated in the IEEE 802.3bn Task Force. The idea is to run EPON Medium Access Control (MAC) over the coax physical layer, to have a centralized and unified scheduling, management, and quality-of-service (QoS) environment from the cable head-end to the end-users' premises. We describe the architecture of EPoC, and outline how the EPON MAC Control, i.e., the Multi-Point Control Protocol (MPCP) can be extended for designing an end-to-end Multi-Point MAC Control for EPoC. We explain several MAC functions and their operation, including upstream and downstream framing for coax, Ethernet frame fragmentation, generation of upstream and downstream Media Allocation Plans, and automatic discovery and registration of user equipment. We compare framing approaches based on their control overheads and the maximum average data transmission rates, and analyze how different parameters such as modulation profile, symbol duration, number of sub-carriers, length of resource blocks, etc. affect the data rates, and show that dynamic and hybrid framing approaches perform better than static ones for real-world traffic patterns. We propose and analyze a dynamic, intelligent, delay-aware and centralized bandwidth allocation (DBA) scheme for EPoC, where all allocation decisions are made at the head-end. Finally, we present the architecture of EPoC with an intelligent media converter -- a Coax Line Terminal (CLT), which can perform dynamic bandwidth allocation in the coax segment. We propose an intelligent DBA scheme based on Interleaved Polling with Adaptive Cycle Time (IPACT) for allocating bandwidth to the coax network units (CNUs) using feedback from the CLTs. We show that, for an asymmetrically-loaded network, the scheme performs better than the Limited Service scheme of IPACT. We analyze the effect of the number of CLTs used for a fixed number of subscriber homes on the performance of EPoC, and find that using more CLTs is generally better. We also propose Logical Topology Emulation in EPoC including logical link identifier (LLID) filtering rules.
520 $a Finally. we outline some interesting open problems for future research in EPoC and hybrid access architectures involving optical, coax, and wireless.
590 $a School code: 0029.
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