Beam Steerable Antenna Design for Directional MAC Layer for Next Generation Networks

Existing BTS or BSC are using Omni-directional or sectored antenna for mobile communication. But if we can use Beam switched or steerable directive antenna instead of Omni-directional antenna then we can utilize resources efficiently. We can use directional MAC concept to implement steerable or switched beam smart antennas in real time mobile communication. Directional antennas can be implemented in three ways as if we use directional switched beam antenna at Base station end only or we use directional antenna at mobile terminal end only or we can use adaptive direction directive antennas at both base station and mobile terminal ends. This will result in a real time power control, better frequency reuse in GSM or CDMA mobile communication system. Further use of MEMS switches for designing switched beam antenna will result in further reduction in power consumption. We exploit Mobile Communication and Multi beam Antenna approach simultaneously. Together it provides Spatial Division Multiple Access (SDMA), which has clear advantage over FDMA, CSMA, and TDMA etc. At physical layer for above concept we propose solid state switches like MEMS, PIN diode, FET reconfigurable switched beam antenna. Recent development on MMICs achieved higher frequencies and higher powers, planar reconfigurable structures for antennas become essential for monolithic integration of millimetre wave devices and dynamic operation of low-cost wireless networks i.e. MEMS and reconfigurable antenna can be integrated on a chip with required system, small size is an advantage as well. I. introduction Although an infinite amount of research has gone into directional MAC design but all the research include the simulating the directional MAC concept without considering of Beam steerable directional antenna which is encountered at time of designing. Also this directional MAC concept is proposed for Wireless sensor network and Wireless ad-hoc networks in literature while we can further carry on this research for next generation networks. When using practical antenna beam forms, side lobes and back lobes exist this may cause many problems. Beam steerable antennas promise a significant increase in the spatial reuse of the wireless medium when deployed in next generation networks. Directional gain is always desirable to improve SNR for the received signal. So lots of research is going on to make beam steerable antenna compatible with MAC layer for fully exploiting the offered potential of Directional Beam steerable antenna.