Real-time and fairness assisted scheduling in multiuser two-way relay network

Real-time and fairness assisted scheduling schemes in two-way relay network with multiuser and single relay are studied. In the discussed model, the relay can only serve one pair of users at a moment. Since different users not only have different requirements on rate and traffic amount, but also contain different traffic type such as real-time and non-real-time traffic, user-pairs should be served selectively by the relay under specific scheduling schemes. Rate factor, real-time factor and queue factor are first introduced, and then three scheduling schemes are proposed to satisfy different requirements. Performance comparisons among the three proposed scheduling schemes and the conventional rate maximizing scheme are illustrated by numerical results.