公开(公告)号：US20140079389A1

公开(公告)日：2014-03-20

申请号：US14087360

申请日：2013-11-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianrui HAN ,  Mingming XU ,  Lei SHI ,  Lin TAN

IPC: H04J14/02 ,  H04B10/079

CPC classification number: H04J14/0227 ,  H04B10/0793 ,  H04B10/07953 ,  H04J14/0221 ,  H04J14/0257 ,  H04J14/0269 ,  H04J14/0271 ,  H04L45/62

Abstract: Embodiments of the present invention disclose a path selecting method and apparatus. The method includes: computing an end-to-end path for a newly added service according to network topology and a wavelength constraint, and assigning a wavelength to the path; computing performance of each existing service and performance of the newly added service in a network according to physical impairment information collected in the network, where the physical impairment information includes a gain reference spectrum of each optical amplifier in the network; and performing impairment check on performance of each service, and performing path selection for the newly added service according to a result of the impairment check. The apparatus includes a path computation module, a performance computation module and an impairment check module. According to the embodiments, efficiency of network update or rerouting is improved.

Abstract translation: 本发明的实施例公开了路径选择方法和装置。 该方法包括：根据网络拓扑和波长约束计算新添加的业务的端到端路径，并向路径分配波长; 根据网络中收集的身体损伤信息，计算网络中新增服务的每个现有服务的性能和性能，其中身体损伤信息包括网络中每个光放大器的增益参考频谱; 对每个业务的性能进行减值检查，根据减值检查的结果对新增的业务进行路径选择。 该装置包括路径计算模块，性能计算模块和损伤检查模块。 根据实施例，提高了网络更新或重新路由的效率。