Patent ID: 9680587
Date: 2017-06-13
CPC Classifications: H04J

Claim:
1. A method of processing traffic at a node of a Layer 1 transport network which is arranged to transport traffic across the network in Layer 1 data transport units, the method comprising: receiving traffic at the node, wherein the received traffic is in the form of Layer 1 data transport units of a first level and wherein the received Layer 1 data transport units of the first level are not all intended for a same destination; and producing Layer 1 data transport units of a second level that is different from the first level by mapping the received Layer 1 data transport units of the first level to the Layer 1 data transport units of the second level that is different from the first level, wherein the mapping is at least according to destination, such that the received traffic is segregated into Layer 1 data transport units of the second level, with each Layer 1 data transport unit of the second level carrying a plurality of Layer 1 data transport units of the first level that are each destined for only a same particular destination of the transport network, wherein the Layer 1 transport network is configured to carry a plurality of different traffic types and the mapping comprises mapping the received traffic to Layer 1 data transport units of the second level according to destination and traffic type, such that the received traffic is segregated into Layer 1 data transport units of the second level, with each Layer 1 data transport unit of the second level carrying a particular one of the traffic types and traffic for a particular destination of the transport network.