|Table of Contents|

Handover Strategy for Multimedia in LEO Satellite Network


Research Field:
Publishing date:


Handover Strategy for Multimedia in LEO Satellite Network
CHEN Bing-caiZHANG Nai-tongZHOU Ting-xian
Communications Research Center,Harbin Institute of Technology,Harbin 150001,China
LEO satellite netwo rk handovermanagement Doppler effect multimed ia handover
A im ing at the application o fmultimedia in LEO netw ork, a handovermanagement algorithm based on dynam icDoppler is analyzed, w hich uses the Dopp ler effect and the geometry of sa-t ellites to obtain the t ime and position o f the handover. Th is algorithm and mob ility mode l are improved in order to prov ide an e ff icient handover strategy based on pred iction o f handover. Based on a tradeo ff o f the b lock ing and forced term ination probab ilities, three d ifferent handover criteria are proposed fo r the appropriate selection of the serv icing satellite. E ach criterion can be app lied e ither to new or handover calls, therefore n ine d ifferen t comb inations of handover cr iterion are investigated in th is paper. Fina lly, w ith an example of Teledesic-like system , the improved algo rithm and the handover strategy are eva luated and the results ind icate that the a lgorithm is effective.


[ 1 ] Del R, P ierucc i L. Nex t-generation m ob ile sate llite netw orks [ J ]. IEEE Commun ica tions M agazine, 2002, 40( 9): 150- 159.
[ 2] Jam a lipourA, Tung T. The ro le of sate llites in g loba l IT: T rends and imp lications [ J] . IEEE Persona l Communications, 2001, 12( 6): 5- 11.
[ 3] Papape trou E, Pav lidou F N. QoS handover m anagem ent in LEO /MEO satellite sy stem s[ J]. IEEE Transactions on Commun ications, 2003, 46( 3): 309- 313.
[ 4] Zahariad is T, Vaxevanakis K G, Tsantilas C P. G loba l rom ancing in next-generation ne tw orks [ J ]. IEEE Commun icationsM agazine, 2002, 23( 2): 145- 151.
[ 5] Iera A, M o linaroA. Design ing the interwo rking of terrestr ia l and sate llite IP-based netw orks [ J ]. IEEE Comm unicationsM agazine, 2002, 40( 2): 136- 144.
[ 6] Karapanta zis S, Pavlidou F N. Des ign issues and QoS handover m anagem ent fo r broadband LEO sate llite system [ J] . IEE Proc-Commun, 2005, 152 ( 6): 1 006- 1 014.


Last Update: 2006-12-30