On the Benefits of Network Coding for Unicast Application in Opportunistic Traffic Offloading

With the explosive increase in mobile services and user demands, cellular networks will very likely be overloaded and congested in the near future. To cope with this explosive growth in traffic demands with the limited current network capacity, opportunistic network is used to offload traffic from cellular networks to free device-to-device networks. Network coding can make full use of the mobility of nodes and improve the performance of opportunistic traffic offloading. In this paper, we investigate the benefits of applying a form of network coding known as random linear coding to unicast application in opportunistic traffic offloading. Moreover we establish a mathematical model to analyze the benefits of RLC. RLC schemes achieve faster information propagation at the price of a greater number of transmissions and take up a lot of storage space. To optimize scheme, we utilize the survival time to control the number of packets in the network and free up storage space for node.