波分复用光传送网中备用选路下的选路和波长分配算法.PDF

4 Vol.30 No.4 2002 4 ACTA ELECTRONICA SINICA April 2002 徐世中, 李乐民,王 晟 (, 610054) : , , ., ,2 ,. , ,,; . : ; ; : TN929111 : A : 037222112 (2002) 042 0488204 An Alternate Routing Algorithm for WDM Optical Transp ort Network XU Shi2zhong,LI Le2 in,WANG Sheng (National KeyLab of Broadband Optical Fiber Transmission and Communication Networks, UE TC, Chengdu , ichuan 610054, China ) Ab stract : In this paper, an alternate routing algorith isproposed for the proble ofrouting and assign ent ofwavelength in Wavelength DivisionMultiplexing (WDM) opticaltransport network.It can ore accurately odel the state ofthewholenetwork after the establish ent ofnew callsthan other alternate algorith sproposed before.Theroute2wavelength pairwhich has the least influence on the state of the whole network is chosen to acco odatethe co ing call.The algorith perfor sbetterthan other alternate routing algorith s in ost caseswestudied.Fairness is i proved significantly too. Ke y word s : WDM optical transport network;alternate routing;routing and assign ent ofwavelength 1 RAWRAW.RAW (WDM, Wavelength Division Multiplexing) . (OXC,Optical Cross2 connect)(OADM, Optical WDM Add2Drop Multiplexing) . , . WDM . 125 . , , [1~ 3] . , . ( RAW, Routing (ARRLI,Alternate and Assign ent of Wave2 Routing2RelativeLeast Influence). 2 ; length)WDM 3ARRLI ;