Time coordinated base station and antenna array for integer cycle and impulse modulation systems
View Patent ↗An improved antenna and coordination arrangement for use at a base station that will eliminate over the air collisions while doubling the effective data rate of each base station in a network is disclosed. The result will be large area networks which all share exactly the same radio spectrum without mutual interference and little effort required to expand a single base station system to a grid of cooperative base stations forming a coverage area of ubiquitous coverage and multiplied data capacity. Specifically, this disclosure describes an improved antenna arrangement and synchronization system for use when multiple radio base stations, each using a deterministic over the air MAC layer, are located within overlapping coverage areas.
1. A time coordinated base station and antenna array system for radio frequency transmission and reception with mobile devices comprising;
an antenna array having three antennas with each of said antennas having a radiation pattern of 120 degrees and horizontally aligned in a circular pattern such that said antenna array is capable of transmitting in a full 360 degree pattern;
a base station having three antenna outlets with one of each of said antenna outlets electrically connected to one of each of said antennas such that each of said antenna outlets is capable of receiving and transmitting independent radio frequency signals with mobile devices within each of said antennas' radiation patterns;
said base station having a medium access control system with a superframe structure to control timeslots of radio frequency receptions and transmissions;
said superframe structure being divided into three timeslot group subframes with one of each of said timeslot group subframes being assigned to one of each of said antenna outlets resulting in three channels of radio frequency receptions and transmissions such that when one said superframe structure is activated said channels are activated in a sequential manner employing said three antennas, one at a time, effectively rotating the radiation pattern about a 360 degree arc in three steps wherein the airtime for each of said channels is then available only ⅓ of the time in any channel; and,
additional antenna arrays having similar antenna and base station configurations to said antenna array wherein said additional antenna arrays are placed in a triangular or geodesic pattern in relation to said antenna array and such that none of said channels of said antenna array or any of said additional antenna arrays are activated while a directly opposing channel of said antenna array or any of said additional antenna arrays is activated.
2. The time coordinated base station and antenna array system of claim 1 wherein each of said antennas has a front to back radio frequency signal ratio of at least 40 db.
3. The time coordinated base station and antenna array system of claim 1 wherein each of said timeslot group subframes has a coded identification and each mobile device communicates with only one coded timeslot group subframe.