Title :
Multipoint communication by hierarchically encoded data
Author_Institution :
SRI Int., Menlo Park, CA, USA
Abstract :
A novel multipoint communication paradigm, in which each destination receives a subset of the source´s signal that corresponds to that destination´s terminal and access bandwidth constraints, is presented. The approach to realizing this paradigm is based on integration of layered coding of the source´s signal, routing based on bandwidth demand, optimization of signal parameters, and layered error control. The author gives an overview of several hierarchical signal coding techniques; presents methods for finding maximum bandwidth available to destination, establishing maximum-bandwidth routes; and optimally assigns bandwidth to the signal layers to maximize overall reception quality. Error control procedures whereby the network, source, and destinations cooperate to maintain layered-based data integrity, using erasure recovery coding and prioritized packet detection are also presented
Keywords :
broadband networks; encoding; error correction codes; packet switching; telecommunication network routing; telecommunication services; bandwidth demand; erasure recovery coding; hierarchical signal coding techniques; hierarchically encoded data; layered coding; layered error control; multicast services; multipoint communication paradigm; prioritized packet detection; routing; signal parameter optimisation; Asynchronous transfer mode; Bandwidth; Computer networks; Displays; Error correction; Packet switching; Routing; Speech; Streaming media; Teleconferencing;
Conference_Titel :
INFOCOM '92. Eleventh Annual Joint Conference of the IEEE Computer and Communications Societies, IEEE
Conference_Location :
Florence
Print_ISBN :
0-7803-0602-3
DOI :
10.1109/INFCOM.1992.263483
