Patent ID: 9698930
Date: 2017-07-04
CPC Classifications: H04J,H04Q

Claim:
1. A method for bandwidth map update, comprising: after receiving a bandwidth report carried by a control frame, a master node newly establishing a bandwidth map, newly establishing a resource state table, and setting all resource states in the newly established resource state table to be available; adding a cross-master node transport channel drop allocation structure of the newly established bandwidth map in accordance with a cross-master node transport channel add allocation structure of a bandwidth map to be updated, and updating the resource state table according to resource occupancy thereof; according to the bandwidth report carried by the control frame, allocating a wavelength and an optical burst timeslot to a current bandwidth request one by one, adding wavelengths and optical burst timeslots to the newly established bandwidth map, generating a new bandwidth map, and updating the resource state table; and distributing the control frame carrying the new bandwidth map to slave nodes hop by hop; wherein the allocating the wavelengths and optical burst timeslots one by one to the current bandwidth request comprises: according to a source node identifier and a sink node identifier of the current bandwidth request, orderly querying a source resource state table and a sink resource state table, if the source resource state table and the sink resource state table have consistent available optical burst timeslots, then querying a routing table according to the source node identifier and the sink node identifier of the current bandwidth request, if the routing table has a unselected route, then selecting one route, and querying the link resource state table in accordance with a wavelength sequence according to the selected route, and if links with a same wavelength have consistent available optical burst timeslot resources with a source end and a sink end, then selecting one wavelength and one optical burst timeslot position meeting requirements for allocating.