Intelligent Bandwidth Allocation of IPTV Streams with Bitstream Complexity Measures

2015 ◽  
pp. 1941-1961
Author(s):  
Sandro Moiron ◽  
Rouzbeh Razavi ◽  
Martin Fleury ◽  
Mohammed Ghanbari
Keyword(s):  
Bandwidth Allocation ◽  
Video Quality ◽  
Access Network ◽  
Temporal Coding ◽  
Wireless Access Networks ◽  
Core Network ◽  
Complexity Measures ◽  
Broadband Wireless ◽  
Logic Control ◽  
Bandwidth Adaptation

IPTV video services are increasingly being considered for delivery to mobile devices over broadband wireless access networks. The IPTV streams or channels are multiplexed together for transport across an IP core network prior to distribution across the access network. According to the type of access network, prior bandwidth constraints exist that restrict the multiplex data-rate. This paper presents a bandwidth allocation scheme based on content complexity to equalize the overall video quality of the IPTV sub-streams, in effect a form of statistical multiplexing. Bandwidth adaptation is achieved through a bank of bit-rate transcoders. Complexity metrics serve to estimate the appropriate bandwidth share for each stream, prior to distribution over a wireless or ADSL access network. These metrics are derived after entropy decoding of the input compressed bit-streams, without the delay resulting from a full decode. Fuzzy-logic control serves to adjust the balance between spatial and temporal coding complexity. The paper examines constant and varying bandwidth scenarios. Experimental results show a significant overall gain in video quality in comparison to a fixed bandwidth allocation.

Intelligent Bandwidth Allocation of IPTV Streams with Bitstream Complexity Measures

2013 ◽  
Vol 4 (3) ◽  
pp. 41-62
Author(s):  
Sandro Moiron ◽  
Rouzbeh Razavi ◽  
Martin Fleury ◽  
Mohammed Ghanbari
Keyword(s):  
Bandwidth Allocation ◽  
Video Quality ◽  
Access Network ◽  
Temporal Coding ◽  
Wireless Access Networks ◽  
Core Network ◽  
Complexity Measures ◽  
Broadband Wireless ◽  
Logic Control ◽  
Bandwidth Adaptation

IPTV video services are increasingly being considered for delivery to mobile devices over broadband wireless access networks. The IPTV streams or channels are multiplexed together for transport across an IP core network prior to distribution across the access network. According to the type of access network, prior bandwidth constraints exist that restrict the multiplex data-rate. This paper presents a bandwidth allocation scheme based on content complexity to equalize the overall video quality of the IPTV sub-streams, in effect a form of statistical multiplexing. Bandwidth adaptation is achieved through a bank of bit-rate transcoders. Complexity metrics serve to estimate the appropriate bandwidth share for each stream, prior to distribution over a wireless or ADSL access network. These metrics are derived after entropy decoding of the input compressed bit-streams, without the delay resulting from a full decode. Fuzzy-logic control serves to adjust the balance between spatial and temporal coding complexity. The paper examines constant and varying bandwidth scenarios. Experimental results show a significant overall gain in video quality in comparison to a fixed bandwidth allocation.

Optimized bandwidth allocation in broadband wireless access networks

2014 ◽  
Vol 15 (17) ◽  
pp. 2111-2124 ◽  
Author(s):  
Nidal Nasser ◽  
Reid Miller ◽  
Amir Esmailpour ◽  
Abd-Elhamid M. Taha ◽  
Tarek Bejaoui
Keyword(s):  
Bandwidth Allocation ◽  
Access Networks ◽  
Wireless Access ◽  
Broadband Wireless Access ◽  
Wireless Access Networks ◽  
Broadband Wireless ◽  
Broadband Wireless Access Networks

Applications of “Cross-Layer” in Video Communications over Wireless Networks

2012 ◽  
pp. 214-229
Author(s):  
Martin Fleury ◽  
Rouzbeh Razavi ◽  
Laith Al-Jobouri ◽  
Salah M. Saleh Al-Majeed ◽  
Mohammed Ghanbari
Keyword(s):  
Wireless Networks ◽  
Video Compression ◽  
Information Exchange ◽  
Video Quality ◽  
Cross Layer ◽  
Wireless Access Networks ◽  
Broadband Wireless ◽  
Noise Interference ◽  
Video Application ◽  
Adaptive Solution

Because of the impact of noise, interference, fading, and shadowing in a wireless network, there has been a realization that the strict layering of wireline networks may be unsuitable for wireless. It is the volatility over time that demands an adaptive solution and the basis of adaptation must arise by communication of the channel conditions along with the datalink settings. Video communication is particularly vulnerable because, except when reception is decoupled from distribution as in multimedia messaging, there are real-time display and decode deadlines to be met. The predictive nature of video compression also makes it susceptible to temporal error propagation. In this chapter, case studies from the authors’ experiences with broadband wireless access networks and personal area wireless networks serve to illustrate how information exchange across the layers can benefit received video quality. These schemes are all adaptive and serve as a small sample of a much greater population of cross-layer techniques. Given the importance of multimedia communications as an engine of growth for networked communication, “cross-layer” should be the first consideration in designing a video application.

Interference Aware Resource Allocation in Relay Enhanced Broadband Wireless Access Networks

2013 ◽  
pp. 18-46
Author(s):  
Preetha Thulasiraman
Keyword(s):  
Resource Allocation ◽  
Bandwidth Allocation ◽  
Network Performance ◽  
Wireless Access Networks ◽  
Routing Metric ◽  
Broadband Wireless ◽  
Fair Bandwidth Allocation ◽  
Future Challenges ◽  
Allocation Algorithms

First, a novel interference aware routing metric for multipath routing considering both interflow and intraflow interference will be discussed. Second, in order to ensure quality of service (QoS), an interference aware max-min fair bandwidth allocation algorithm is addressed using lexicographic ordering and optimization. A comparison among various interference based routing metrics and interference aware bandwidth allocation algorithms established in the literature is shown through simulation results derived from NS-2 and CPLEX. It is shown that the proposed interference aware resource allocation framework improves network performance in terms of delay, packet loss ratio, and bandwidth usage. Lastly, future challenges and emerging research topics and opportunities are outlined.

Nýting ljósleiðara á Íslandi

2017 ◽  
Vol 23 ◽  
pp. 32-36
Author(s):  
Sæmundur E. Þorsteinsson
Keyword(s):  
Mobile Communication ◽  
Rural Areas ◽  
Communication Systems ◽  
Access Network ◽  
Access Networks ◽  
Optical Fibres ◽  
Core Network ◽  
Leading Role ◽  
Telecommunication Systems ◽  
Optical Ring

General deployment of optical fibre technology commenced in the eighties. Its introduction revolutionised the telecommunications arena and has become the foundation of most telecommunication systems in use today. Optical fibres connect continents and countries, are used in core and access networks and for backhauling of mobile communication systems. The internet would barely exist without optical fibres and globalisation would hardly have seen the dawn of light. Three submarine optical cables connect Iceland to the outside world; Farice and Danice connect Iceland to Europe and Greenland Connect to America via Greenland. The optical ring around Iceland constitutes the Icelandic core network. The ring passes by nearly all villages and towns and fibre deployment in the access network has reached an advanced state. Fibre deployment in rural areas has already begun and will presumably be finished in a few years. Iceland plays a leading role in fibre deployment. In this paper, fibre utilisation in Iceland will be described, both in core and access networks. Three different architectures for fibre deployment in the access network will be described. Competition on fibre networks will also be discussed.

scholarly journals Implementation of a One-LLID-per-Queue DBA Algorithm in EPON

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
N. A. M. Radzi ◽  
N. M. Din ◽  
M. H. Al-Mansoori ◽  
H. Zainol Abidin
Keyword(s):  
Traffic Flow ◽  
Bandwidth Allocation ◽  
Optical Network ◽  
Access Network ◽  
Passive Optical Network ◽  
Dynamic Bandwidth Allocation ◽  
Global Priority ◽  
Upstream Direction ◽  
Ethernet Passive Optical Network ◽  
Dynamic Bandwidth

The advantages of Ethernet passive optical network (EPON) are setting it to be a natural ubiquitous solution for the access network. In the upstream direction of EPON, the directional property of the splitter requires that the traffic flow be mitigated to avoid collision. A dynamic bandwidth allocation (DBA) scheme is desirable in optimizing the bandwidth usage further. In this paper, a global priority DBA mechanism is discussed. The mechanism aims to reduce the overall delay while enhancing the throughput and fairness. This study was conducted using MATLAB where it was compared to two other algorithms in the literature. The results show that the delay is reduced up to 59% and the throughput and fairness index are improved up to 10% and 6%, respectively.

Sign in / Sign up

Export Citation Format

Share Document