A GEO Satellite System for Broadcast Audio and Multimedia Services Targeting Mobile Users in Europe

2008 ◽  
Author(s):  
Hussein Sallam ◽  
Tarek Abdel-Nabi ◽  
Jerome Soumagne
Keyword(s):  
Satellite System ◽  
Mobile Users ◽  
Multimedia Services ◽  
Geo Satellite

scholarly journals Maximizing Throughput of The GEO Satellite At C/Ku Bands

2021 ◽  
Author(s):  
Sabir Hussain ◽  
Ghulam Jaffer
Keyword(s):  
Rural Areas ◽  
High Performance ◽  
Satellite System ◽  
Data Traffic ◽  
Coverage Area ◽  
Geo Satellite ◽  
Cost Efficient ◽  
And Performance ◽  
The Cost ◽  
Ku Band

Abstract The need for broadband data has increased speedily but in underserved rural areas, the mobile connectivity of 3G and LTE is still a significant challenge. By looking at the historical trend, the data traffic and the internet are still expected to grow in these areas [1]. The next generation of satellites is trying to decrease the cost per MB having the advantage of higher throughput and availability. To maintain the performance of the link, choosing an appropriate frequency is evident. A multi-beam satellite system can fulfill the demand and performance over a coverage area. The high throughput satellites (HTS) fulfill this requirement using C and Ku bands. In this paper, we present the benefits of using Ku-band on the user site and the composite of C and Ku bands on the gateway site. This configuration has proved to be a cost-efficient solution with high performance over the traditional straight configuration. The data rate is improved five times both on upstream and downstream as compared to the existing available FSS system. Moreover, it has got an advantage to Ku-band user that they would enjoy the significant improvement in the performance without upgrading their systems.

Discovering Multimedia Services and Contents in Mobile Environments

2011 ◽  
pp. 165-178 ◽  
Author(s):  
Zhou Wang ◽  
Hend Koubaa
Keyword(s):  
Mobile Ad Hoc Networks ◽  
Service Discovery ◽  
Ad Hoc ◽  
Mobile Users ◽  
Portable Devices ◽  
Mobile Environments ◽  
Multimedia Services ◽  
Industry Standards ◽  
Hoc Networks ◽  
Research World

Accessing multimedia services from portable devices in nomadic environments is of increasing interest for mobile users. Service discovery mechanisms help mobile users freely and efficiently locating multimedia services they want. The chapter first provides an introduction to the topic service discovery and content location in mobile environments, including background and problems to be solved. Then, the chapter presents typical architectures and technologies of service discovery in infrastructure-based mobile environments, covering both emerging industry standards and advances in the research world. Their advantages and limitations, as well as open issues are discussed, too. Finally, the approaches for content location in mobile ad hoc networks are described in detail. The strengths and limitations of these approaches with regard to mobile multimedia services are analyzed.

Broadband Satellite Multimedia Networks

2010 ◽  
pp. 377-397 ◽  
Author(s):  
Paolo Chini ◽  
Giovanni Giambene ◽  
Snezana Hadzic
Keyword(s):  
Resource Management ◽  
Satellite System ◽  
Satellite Networks ◽  
Multimedia Networks ◽  
Multimedia Services ◽  
Management Schemes ◽  
To Receive ◽  
Suitable Case

Nowadays there is an increasing need of broadband communication anytime, anywhere for users that expect to receive multimedia services with support of quality of service. In such a scenario, the aim of this chapter is to present the possibility of the satellite option that is particular attracting to bridge the digital divide in those areas where terrestrial solutions are unfeasible or too expensive. This chapter provides first a survey of the ETSI standardization framework for satellite networks. Then, resource management schemes for both forward and return link are described. Finally a suitable case study is provided for the integration of a DVB-S/DVB-RCS satellite system interconnected with a WiFi segment for local coverage; examples and results permit to understand different resource management implications.

Propagation Delay Difference Estimation for Initial Random Access in LTE Compatible Mobile Satellite Communications System

2013 ◽  
Vol 846-847 ◽  
pp. 647-650
Author(s):  
Cheng Mei Li ◽  
Jian Jun Wu ◽  
Xiao Ning Zhang ◽  
Xi Luan ◽  
Hai Ge Xing
Keyword(s):  
Estimation Method ◽  
Random Access ◽  
Satellite Communications ◽  
Propagation Delay ◽  
Satellite System ◽  
Satellite Systems ◽  
Access Channel ◽  
Geo Satellite ◽  
Mobile Satellite ◽  
Delay Difference

In this paper, a two-step propagation delay difference estimation method is proposed for LTE compatible multi-beam satellite systems to ensure the initial random access (RA). For GEO satellite system, there exists a large propagation delay difference, we cannot directly apply the LTE delay estimation method. To deal with this issue, we first divide a satellite beam into some layered small sub-areas according to the different delay difference values. Then, two types of Physical Random Access Channel (PRACH) preamble burst format are given. The detailed PRACH parameters are provided. Finally, simulations are performed and the results verify the availability of our proposed design.

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