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Satcom

HSC offers Design, development, maintenance and sustenance of satellite earth station, adaptation of terrestrial telecom specifications for satellite networks, network management and control center solutions for LEO, GEO, MEO satellite networks.

White Paper/Open Sources related to Satcom

Downlink Link Budget Analysis for a DVB-SH System

Abstract: The DVB-SH (Digital Video Broadcasting – Satellite to Handheld) system is the latest of a series of specifications that enables broadcast quality video to be relayed directly from a broadcast network, and displayed on a handheld/portable/mobile device.
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Case studies related to Satcom

Analysis of WiMAX over Satellite Abstract: HSC did an exact estimation of Wimax over a satellite link. A quantitative and qualitative analysis was done for performance, capacity (in terms of voice calls per MHz), setup time of voice calls and various overheads viz. spectral over heads, protocol overheads etc. Read more...
Satellite Terminal Access Stratum Abstract: HSC has been involved in Design, development and integration of Satellite Access Stratum (AS). based on 3GPP Release 6 Specifications. HSC was responsible for complete AS Design/development as well as integration with multiple interfaces viz. Non-Access Stratum (NAS), Physical Layer, Network and Platform. Read more...
DVB-s2 satellite modem Abstract: The architecture below comprises of a Broadband VSAT system consisting of FPGAs having interface with DSP & custom SoC. The Adaptive coding and modulation (ACM) feature means that the coding (FEC rate) and modulation DVB-S2 outbound carrier can be dynamically modified to optimize the performance per terminal. Read more...
Enhancing IPv4 VSAT to a Dual Mode VSAT (IPv4/IPv6) Abstract: Typically a VSAT has two major interfaces, the LAN side on which it has subtended user networks and the RF Network side. Implementation includes IPv6 Neighbor Discovery and translation algorithms for IPv6-IPv4-IPv6 traffic terminating on the VSAT. This enabled an IPv6 host to access application on VSAT supporting only IPv4. Customer Benefits: Flexibility of subtending IPv4 or IPv6 networks on the LAN side Enable IPv6 interface with minimal changes on the existing software on the VSAT. Read more...
GMR-1 Mobile Satellite System Abstract: The intent was to develop a Gen 2 gateway on a different hardware and a different platform. For this, some parts of the Gen 2 gateway were designed and developed afresh while some were ported on the new platform and some were just modified to support Gen 2 gateway. Read more...
GMR-3G Satellite Terminal Abstract: HSC developed the access stratum including L2/L3 protocols, stack mgmt and PDCP which involved complete system architecture and design. HSC also participated in the integration testing of the Access stratum as well as the NAS-AS integration. Specific handling was done for the voice streams. Read more...
Satellite and Terrestrial Hybrid Network Abstract: HSC developed various key functionalities of the SBSS node viz. Control channel mgmt, control plane and user plane components, RRM/RRC development, inter RAT/inter system handover etc. Various optimizations were done at RRC procedures to minimize the protocol delays. Read more...