Abstract
As the interests of broadcasting services in mobile networks are increased, the research of convergence services of broadcasting and communication has become popular. To support broadcasting services in cellular network smoothly, WiBro support the multicast and broadcast service (MBS). MBS is transmission method that base stations belong to same MBS zone transmit the data to all users who request broadcasting service. Although MBS could enhance the quality of service, there are some problems in MBS. In the edge of MBS zone, the SINR of mobile stations (MS) is very low yet. In this paper we suggest algorithm that mobile station with having above certain level of SINR retransmit the received signal to the degraded MSs immediately after receiving the signal. MS also retransmit interference parts of signal. The results show that the algorithm should enhance the quality of receiving environments.
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