Mathematical Problems in Engineering / 2017 / Article / Fig 1

Research Article

Delay-Optimal Scheduling for Two-Hop Relay Networks with Randomly Varying Connectivity: Join the Shortest Queue-Longest Connected Queue Policy

Figure 1

Two-hop queueing network model. The system consists of one source queue (SQ) and relay queues (RQs). Only one customer can be served at any instant (half duplex). Binary variable represents the connectivity of the th RQ, .

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