WDM网络中一种新的有效波长分配算法

A New Efficient Wavelength Assignment Algorithm in WDM Networks

目前网络运营商对设备升级不同步,使全光网络中单根光纤所支持的波长数量差异较大,为此在现有RW A算法的基础上,提出了一种新的波长分配算法.该算法将支持波长数目少的链路上的那些波长界定为紧缺、被保护的范畴,在进行分配时,延后使用.算法在一定程度上解决了因缺少波长而形成的链路瓶颈问题.同以往的算法相比,提高了全网的阻塞率性能.在不同的网络结构的仿真结果表明,算法有效.

Considering of the different numbers of wavelength in ditterent fiber, a new aynamic wavelength assignment algorithm is proposed. Wavelengths, which number of which in one fiber is Small,can be protected when using this algorithm. Contrary to the traditional routing algorithm,the proposed algorithm improves the blocking rate performance of DWDM network and settles the bottle neck problem resulted from being short of wavelengths in some degree. The result of simulation shows that this algorithm is efficient.