Broadband satellite multimedia

Abstract

Abstract:The Broadband Satellite Multimedia (BSM) architecture standardised by ETSI defines a Satellite Independent Service Access Point (SI-SAP) interface layer that separates the satellite independent features of the upper layers from the satellite dependant features of the lower layers, and provides a mechanism to carry IP based protocols over these satellite dependent lower layers. This enables interoperability at the IP layer between satellite systems of different physical and link layers technologies that fully comply with the SI-SAP concept. This paper reviews past and current standardisation activities including the BSM QoS architecture, security architecture, network management that have been carried out by the ETSI TC-SES/BSM working group and looking into the future to extend current SI-SAP functions that can enhance existing QoS provision and security management capabilities as well as proposing a mobility management architecture that complies with the IEEE 802.21 MIH framework to support BSM mobility and to allow integration of satellite networks with fixed and mobile network infrastructures. A service-based network management architecture is also proposed to allow management flexibility and integration of business and operation support functions, paving the way for satellite integration into the Internet of the Future.

Frequency Bandwidth Management of Satellite Communication Network

“…VOIP phone bandwidth will be determined by the voice encoding, Baotou compression rate and load size. For example, the use of G.729 algorithm [6], the payload is 40Bytes, no Baotou compression, a VOIP phone about occupies 16kbps bandwidth, if Baotou is compression, a VOIP phone about occupies 10kbps bandwidth.…”

TCP Performance Issues in Satellite and WiFi Hybrid Networks for High-Speed Trains

“…To support the L2 handover procedures, IEEE 802.21 Media Independent Handover, MIH, is adopted [11] and applied to the Broadband Satellite Multimedia (BSM) standard protocol architecture [4]. With MIH, a mobile node discovers a new access link, registers itself to the new network, disconnects from the old network (when some handover criterion is met), and communicates with the corresponding host via the new access link.…”

“…The limit to this approach is given by the fact that modified TCP versions need to be supported by servers and this could be viable only if the severs are specialized and internal to the railway network. To deal with the cases of generic servers in the Internet, TCP split solutions should be adopted with one or two PEP's [4]. Hence, HetNets with TCP split technique, PEP and accelerated TCP versions for the satellite segment is another combined approach to deal with channel disruptions.…”

An Integrated Wireless Communication Architecture for Maritime Sector

“…However, the methodologies of heterogeneity handling between BSM architecture and IEEE 802.21 framework are similar, hiding the differences by adding a common abstraction layer. Therefore, we could integrate SI-SAP within the IEEE 802.21 MIH framework to enable the handover between satellite networks and non-satellite networks in the maritime communication scenario, which is also recommended in [18].…”