This paper presents a practical and general coder and decoder of network coding (NC) with HDL (Hardware Description Language) logic for wire-speed nodes in multisource multicast networks. The NC coders apply random li...
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In online map service for mobile users, it's necessary to provide different map data according to different application scenarios. For a given scenario, we can preprocess the map data to satisfy the online and mob...
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In online map service for mobile users, it's necessary to provide different map data according to different application scenarios. For a given scenario, we can preprocess the map data to satisfy the online and mobile requirements. This paper proposes a rule-based pretreatment mechanism for online mobile map data which using a novel mobile map data format Byte-Map. Through the use of pretreatment rules definition and rule engine, we can externalize the decision logic from the business logic in data pretreatment mechanism. We can also separate the data preparer and data pretreatment programmer from each other. In one hand, the data preparer can make definition and configure rules to change the pretreatment procedure, without knowing the program code. In another hand, the data pretreatment programmer can avoid modifying and re-compiling program code for handling map data from different source and type. The rule-based pretreatment mechanism made the online mobile map data pretreatment procedure flexible and extensional.
The method of network coding has been proven a promising solution to fanin conflict problems (traffic flows conflicting at input ports) in multicast switches in previous work. However, this approach is inefficient whe...
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The method of network coding has been proven a promising solution to fanin conflict problems (traffic flows conflicting at input ports) in multicast switches in previous work. However, this approach is inefficient when applied to frame-based switches because of over-splitting with conventional algorithms. These algorithms do not support the benefits of network coding to be fully realized when ignoring the impact of fanout splitting. In this paper, we employ a self-defined weight for the Maximum Weight Matching (MWM) scheme for multicast switches. The corresponding scheduling algorithm avoids over-splitting to any traffic flow. The so-called Coding-Driven scheduling algorithm can remarkably decrease the minimum time slots required for scheduling, therefore improve the efficiency of network coding method in multicast switches as showed in the empirical results.
Network coding is able to address output conflicts when fanout splitting is allowed for multicast ***,it successfully achieves a larger rate region than non-coding approaches in crossbar ***,network coding requires la...
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Network coding is able to address output conflicts when fanout splitting is allowed for multicast ***,it successfully achieves a larger rate region than non-coding approaches in crossbar ***,network coding requires large coding buffers and a high computational cost on encoding and *** this paper,we propose a novel Online Network Coding framework called Online NC for multicast switches,which is adaptive to constrained ***,it enjoys a much lower decoding complexity by a Vandermonde matrix based approach,as compared to conven-tional randomized network coding Our approach realizes online coding with one coding algo-rithm that synchronizes buffering and ***,we significantly reduce requirements on buffer space,while also sustaining high *** confirm the superior advantages of our contributions using empirical studies.
Network coding is able to address output conflicts when fanout splitting is allowed for multicast switching. Hence, it successfully achieves a larger rate region than non-coding approaches in crossbar switches. Howeve...
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