Some opptunistic relay selection cooperative MAC protocols was put forward for the sake of further using the instantaneous state of network in wireless Ad hoc network.And the scheme was implemented on the platform of network simulation 2（NS-2）

the results showing that the performance of network delivering ratio of cooperative scheme is improved effectively comparing with that of 802.11 DCF protocol.Additional

a numerical simulation of cooperative MAC protocol based on RCPC code was also completed.These schemes and protocols will do a favor for the implementation of cooperative communication and networking.