发明名称 |
DYNAMIC HITLESS RESIZING IN OPTICAL TRANSPORT NETWORKS |
摘要 |
The invention relates to techniques for controlling a dynamic hitless resizing in data transport networks. According to a method aspect of the invention, a network connection comprises M tributary slots defined in a payload area of a higher order transport scheme of the data transport network and the method comprises the steps of receiving a connection resize control signal at each of the nodes along the path of the network connection; adding at each node along the path in response to the connection resize control signal a second set of N tributary slots to the first set of the M tributary slots, such that the network connection comprises M+N tributary slots; and increasing, after M+N tributary slots are available for the network connection at each node along the path, a transport data rate of the network connection. |
申请公布号 |
US2017070307(A1) |
申请公布日期 |
2017.03.09 |
申请号 |
US201615354796 |
申请日期 |
2016.11.17 |
申请人 |
Huawei Technologies Co., Ltd. |
发明人 |
VISSERS Maarten P.J.;VAN HELVOORT Hubertus Adrianus Maria;YANG Yang;SU Wei |
分类号 |
H04J3/16 |
主分类号 |
H04J3/16 |
代理机构 |
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代理人 |
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主权项 |
1. A method for controlling dynamic hitless resizing of an Optical Data Unit flex (ODUflex) network connection in a data transport network, when the ODUflex network connection is to be incremented, the method comprising:
receiving, by an ingress end node, a connection resize control signal CTRL ADD; adding a set of N tributary slots to a set of M tributary slots; and increasing, a bandwidth of the signal passing through the network connection, after M+N tributary slots are available for the ODUflex network connection at each node along a path in a manner synchronized with a downstream node by passing a tributary slot connectivity check (TSCC) signal; wherein the path of the ODUflex network connection extends between two connection end nodes, or extends over one or more intermediate nodes of the data transport network; wherein the ODUflex network connection transports data of client services in transport frames from the ingress end node to an egress end node; and wherein the ODUflex network connection comprises the set of the M tributary slots defined in a payload area of a higher order transport scheme of the data transport network. |
地址 |
Shenzhen CN |