Method and Arrangement for an Improved Buffer Solution Within a Communication Network Switch
First Claim
1. A switch and/or a Metro access node within an asynchronous communication network, where the switch includes one or more outputs and a buffer unit, said buffer unit is either an integral part of the switch or an external part of the switch adapted to communicate with the switch, characterized in that the buffer unit is adapted to buffer the data and/or packets until a predefined number of wavelengths leading to a buffered packets destination is/are vacant.
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Abstract
In asynchronous optical packet switches, scheduling packets from a buffer randomly will cause less efficient utilization of the buffer. Additionally, reordering of packets may cause problems for service quality demanding applications. According to the present invention a new electronic buffer scheduling algorithm is proposed and a switch utilizing this algorithm is disclosed. The algorithm is designed for utilizing the buffer resources efficiently, still avoiding serious packet reordering.
14 Citations
15 Claims
- 1. A switch and/or a Metro access node within an asynchronous communication network, where the switch includes one or more outputs and a buffer unit, said buffer unit is either an integral part of the switch or an external part of the switch adapted to communicate with the switch, characterized in that the buffer unit is adapted to buffer the data and/or packets until a predefined number of wavelengths leading to a buffered packets destination is/are vacant.
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12. A method for organizing dataflows in an asynchronous communication network including at least one switch and/or Metro access node where said switch and/or Metro access node is associated with at least one buffer and at least a dataflow that can be divided into data packets said dataflow is communicating with the switch and/or Metro access node and the data packets are buffered in the buffer and the method is further
characterized in that the buffer unit are buffering the data and/or packets until a predefined number of wavelengths leading to a buffered packets destination is/are vacant.
Specification