Impact of packet‐level FEC and existing link level reliability mechanisms to deliver MBMS content over WCDMA mobile satellite systems

Abstract

SUMMARYThe inherent broadcast capabilities of satellites make them an attractive solution for the delivery of multimedia services to mobile users in third generation (3G) networks. Reliable delivery of content over a hostile land-mobile satellite channel is one of the key technical system requirements that can be addressed at different protocol layers. In this paper, we focus our attention on some of the mechanisms which can provide partial reliability: the packet-level forward error correction (PLFEC) technique in radio access network (RAN), different interleaving depths at physical layer (inter frame) and power allocation in the satellite radio interface. We rely on an end-to-end simulation platform in order to assess the performance gain achieved by these mechanisms separately, and provide clear indications for the achievable benefits at system level when some of these mechanisms act in co-ordination rather than in isolation.

Towards an optimal transmission of SDUs in IEEE 802.16e WiMAX systems

“…E.g. [15,16] describe the use in the Application and Network layers, respectively. [17][18][19][20][21][22][23][24] demonstrate the use of FEC blocks in the MAC and PHY layers.…”

Physical and Medium Access Control criteria for the optimal Medium Access Control protocol data unit size in Automatic Repeat Request‐enabled connections in IEEE 802.16e/ WiMAX systems

“…In relation to FEC blocks, the use of this technology exists in all communication layers. For example, [40] and [41] describe the use in the application and network layers, respectively. [42][43][44][45][46][47][48][49] demonstrate the use of FEC blocks in the MAC and PHY layers.…”