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In this paper, to provide QoS guarantee and path diversity for WPAN mesh network, a PNC selective MAC protocol is proposed. In the protocol, one device simultaneously communicates with several PNCs within one PNCG (PNC Group). Thus, an efficient communication system also can be achieved by selecting an optimal PNC according to the channel conditions. Analytical results show that this scheme achieves a much higher throughput than a non PNC selective MAC protocol in WPAN.