In distributed spectrum sensing spatially distributed sensors perform radio frequency (RF) sensing and forward the result to a fusion center (FC) Cognitive radio (CR) obtains spectral information from the FC Distributed spectrum sensing facilitates reliable discovery of spectrum opportunity while providing enhanced protection to legacy systems The over all performance of distributed spectrum sensing depends both on the quality of sensing at the individual sensors and the forwarding scheme from the individual sensors In this aspect the choice of media access control (MAC) plays a significant role We can improve the system performance by optimizing the MAC and the spectrum sensing parameters jointly In this paper we propose an enhanced MAC scheme based on existing scheduled MAC protocols to yield a high performance distributed spectrum sensing To demonstrate our Idea we provide computer simulation by considering energy detection based distributed spectrum sensors and IEEE 802 154 PHY and MAC parameters