PCS global mobile satellites

Abrishamkar, F.; Siveski, Z.

doi:10.1109/35.536561

Cited by 38 publications

(4 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, due to the relative satellite motion, the handover process (transferring a connection between satellites which happens approximately every 8 to 11 minutes [23]) and routing path changes, cause the overall delay characteristic between two ground stations in a LEO constellation to vary over time. In [24] TCP performance was investigated showing that roundtrip time varied in a range of patterns including sudden changes due to path changes.…”

Section: A Leo Network Communication Characteristicsmentioning

confidence: 99%

On the Use of LEO Satellite Constellation for Active Network Management in Power Distribution Networks

Yang

Laurenson

Barria

2012

IEEE Trans. Smart Grid

View full text Add to dashboard Cite

2 ically large, including rural, urban, suburban and some very remote sites covering customers numbering a few million to a few thousand or even fewer with different degrees of communication availability. Satellites can reach and provide data service over all these areas regardless the geographical conditions. 2) Current communication infrastructures in utilities were built with the most available technologies at the time resulting in an end-to-end path consisting of channels with diverse communication media and physical characteristics (e.g. leased digital fibre, private wire, telephone lines, satellite and mobile radio). Frequent transitions between different media degrade the communication availability and reliability. Adopting a satellite based system as the key technology effectively removes such deleterious impacts.3) The defined control regions across the power distribution network may be very diverse in terms of the number and type of network elements, e.g. DGs, substation transformers and feeders, which results in data traffic over the underlying communication system with different demands and characteristics. Satellite networks have high flexibility and efficiency in bandwidth utilization to meet the requirements of bandwidth-on-demand capability and dynamic channel allocation. 4) Current power distribution networks continue to grow with an increasing number of monitoring and control devices. Satellite networks are flexible enough for easy expansion and reconfiguration to incorporate and manage communication with newly added power network devices by simply installing system interfaces at device premises with a low installation and maintenance cost. II. RELATED WORKSatellite-based systems have been adopted in power utilities for years and the majority of the research effort (e.g. [10]- [12]) has focused on the use of Geo-stationary (GEO) satellites as a part of the communication infrastructure to provide communication services in power utilities.In [10], a terrestrial-GEO satellite hybrid communication infrastructure is proposed to support dedicated data services for power utilities. In [11], the authors discussed the use of a satellite-based system for wide-area measurement, command and control of power systems and suggested its application to improve the dynamic thermal rating of overhead transmission circuits. In [12], the authors reviewed the incorporation of GEO satellites into existing monitoring, protection and control systems in Energy Management Systems (EMS) and SCADA systems of power utilities. In the aforementioned proposals, the satellite component is expected to operate in areas where terrestrial communication is not available. As a result, it plays a complementary rather than a central role in the overall infrastructure as many critical aspects of GEO technology, notably excessive propagation delay (approximately 250 ms) and high costs, have an effect on the overall performance. On the other hand, recent advances in LEO satellite systems provide several outstanding advantages over GEO bas...

show abstract

Section: A Leo Network Communication Characteristicsmentioning

confidence: 99%

On the Use of LEO Satellite Constellation for Active Network Management in Power Distribution Networks

Yang

Laurenson

Barria

2012

IEEE Trans. Smart Grid

View full text Add to dashboard Cite

show abstract

“…These would provide low-bit-rate services and are expected to be of small size and low mass. A number of systems along with some other parameters are shown in Table 2 [50], [51].…”

Section: K Satellite Mobile Communicationsmentioning

confidence: 99%

Applications Of Antenna Arrays To Mobile Communications, Part I: Performance Improvement, Feasibility, And System Considerations

1997

Proc. IEEE

View full text Add to dashboard Cite

“…In the satellite world, LEO satellite constellations are foreseen as appropriate alternatives to geostationary satellite systems for providing global mobile and fixed services P [1] P . However, LEO satellite link design is complex because of satellites' continuous movements in their orbits.…”

Section: Introductionmentioning

confidence: 99%

Analysis and validation of a new path loss model for LEO satellite communication systems

Jiang

Zong

2010

2010 2nd International Conference on Computer Engineering and Technology

View full text Add to dashboard Cite

A new and simple path loss model for the up/down links in LEO satellite communication systems is provided in the paper. It is different with traditional path loss models for urban peer-to-peer links in terrestrial. This model is considering dynamic topologies, handoffs, earth-satellite distance, operation frequency and other LEO satellite's parameters. On the one hand, we establish its theoretical model based on LEO constellation coverage theory and then analyze the numerical results that path loss changes with the parameters of LEO satellite constellation in details. On the other hand, an simulation system of Iridium communication on OPNET platform is presented. A large number of simulation results are conformed to the numerical results. They both demonstrate the validity and reliability of the path loss model in this paper. It is very useful for LEO satellite link design.

show abstract

PCS global mobile satellites

Cited by 38 publications

References 5 publications

On the Use of LEO Satellite Constellation for Active Network Management in Power Distribution Networks

On the Use of LEO Satellite Constellation for Active Network Management in Power Distribution Networks

Applications Of Antenna Arrays To Mobile Communications, Part I: Performance Improvement, Feasibility, And System Considerations

Analysis and validation of a new path loss model for LEO satellite communication systems

Contact Info

Product

Resources

About