Spectrum allocation system and method for multi-band wireless RF data communications
A dual band spectrum allocation system and method for wireless data communications uses discrete bands for upstream and downstream data communications. A preferred embodiment uses unlicensed UNII bands for license-free data transmissions from a subscriber to a hub, and uses relatively interference free licensed bands for data transmissions from a hub to subscribers, thereby allowing use of greater bandwidth, simplifying system licensing and reducing filtering requirements for subscribers.
1. A wireless communication station comprising:
a multiband antenna configured to operate in at least a first frequency band and a second frequency band, wherein said multi band antenna:
transmits data on a first frequency in said first frequency band, said first frequency band expected to experience low interference,
receives data on a second frequency in said second frequency band, said second frequency band expected to experience high interference,
wherein at least a portion of said receiving and at least a portion of said transmitting occur at the same time; and
a multiband duplexer configured to operate in at least said first frequency band and said second frequency band.
2. The wireless communication station of claim 1 further comprising a multi-lobe antenna assembly, where each of said lobes comprises one of said multi band antenna.
3. The wireless communication station of claim 1 wherein said low interference frequency band and said high interference frequency are separated by at least one octave.
4. The wireless communication station of claim 1 wherein said multi band antenna is configured to operate with both horizontal and vertical polarities in both of said first and second frequency bands.
5. The wireless communication station of claim 1 wherein said data is frequency division duplexed.
6. The wireless communication station of claim 1 further comprising a filter, said filter configured to perform higher order filtering on signals received at said base station than is required for effective reception of signals received from said base station.
7. The wireless communication station of claim 6 wherein said filter is a multi pole filter.
8. The wireless communication station of claim 1 wherein said wireless communication station is a base station.
9. A wireless communication station comprising:
a multiband antenna configured to operate in at least a first frequency band and a second frequency band, wherein said multi band antenna:
transmits data on a first frequency in said first frequency band, said first frequency band expected to experience low interference,
receives data on a second frequency in said second frequency band, said second frequency band expected to experience high interference,
wherein at least a portion of said receiving and at least a portion of said transmitting occurs during the same communication session; and
a multiband duplexer configured to operate in at least said first frequency band and said second frequency band.
10. The wireless communication station of claim 9 further comprising a multi-lobe antenna assembly, where each of said lobes comprises one of said multi band antenna.
11. The wireless communication station of claim 9 wherein said low interference frequency band and said high interference frequency are separated by at least one octave.
12. The wireless communication station of claim 9 wherein said multi band antenna is configured to operate with both horizontal and vertical polarities in both of said first and second frequency bands.
13. The wireless communication station of claim 9 wherein said data is frequency division duplexed.
14. The wireless communication station of claim 9 further comprising a filter, said filter configured to perform higher order filtering on signals received at said base station than is required for effective reception of signals received from said base station.
15. The wireless communication station of claim 14 wherein said filter is a multi pole filter.
16. The wireless communication station of claim 9 wherein said wireless communication station is a base station.
17. A subscriber station comprising:
a multiband antenna configured to operate in at least a first frequency band and a second frequency band, wherein said multi band antenna:
receives data on a first frequency in said first frequency band, said first frequency band expected to experience low interference,
transmits data on a second frequency in said second frequency band, said second frequency band expected to experience high interference,
wherein at least a portion of said receiving and at least a portion of said transmitting occur at the same time; and
a multiband duplexer configured to operate in at least said first frequency band and said second frequency band.
18. The subscriber station of claim 17 wherein said low interference frequency and said high interference frequency are seperated by at least one octave.
19. The subscriber station of claim 17 wherein said multi band antenna is configured to operate with both horizontal and vertical polarities in both of said first and second frequency bands.
20. The subscriber station of claim 17 wherein said data is frequency division duplexed.
21. The subscriber station of claim 17 further comprising a filter, said filter configured to perform lower order filtering on signals received at said subscriber station than is required for effective reception of signals transmitted by a base station.
22. The subscriber station of claim 21 wherein the filtering performed at said subscriber station is performed by finite impulse response (FIR) filtering.
23. The subscriber station of claim 21 wherein the filtering performed at said subscriber station is performed by surface acoustical wave (SAW) filtering.
24. A subscriber station operating with increased capacity in a wireless data communication system, said subscriber station comprising:
a receiver configured to receive data on a first frequency in a frequency band expected to experience low interference;
a transmitter configured to transmit data on a second frequency in a frequency band expected to experience high interference;
wherein said transmitting and said receiving occur during the same communication session.
25. A base station operating with increased capacity in a wireless data communication system, said base station comprising:
a transmitter configured to transmit data on a first frequency in a frequency band expected to experience low interference;
a receiver configured to receive data on a second frequency in a frequency band expected to experience high interference;
wherein said transmitting and said receiving occur during the same communication session.
26. A method for increasing capacity of a wireless data communication system, said method comprising the steps of:
receiving, at a subscriber station, data on a first frequency in a frequency band expected to experience low interference;
transmitting, at said subscriber station, data on a second frequency in a frequency band expected to experience high interference;
wherein said transmitting and said receiving occur during the same communication session.
27. A method for increasing capacity of a wireless data communication system, said method comprising the steps of:
transmitting, at a base station, data on a first frequency in a frequency band expected to experience low interference;
receiving, at said base station, data on a second frequency in a frequency band expected to experience high interference;
wherein said transmitting and said receiving occur during the same communication session.
28. A subscriber station comprising:
a multiband antenna configured to operate in at least a first frequency band and a second frequency band, wherein said multi band antenna:
receives data on a first frequency in said first frequency band, said first frequency band expected to experience low interference,
transmits data on a second frequency in said second frequency band, said second frequency band expected to experience high interference,
wherein at least a portion of said receiving and at least a portion of said transmitting occurs during the same communication session; and
a multiband duplexer configured to operate in at least said first frequency band and said second frequency band.
29. The subscriber station of claim 28 wherein said multi band antenna is configured to operate with both horizontal and vertical polarities in both of said first and second frequency bands.
30. The subscriber station of claim 28 wherein said data is frequency division duplexed.
31. The subscriber station of claim 28 further comprising a filter, said filter configured to perform lower order filtering on signals received at said subscriber station than is required for effective reception of signals transmitted by a base station.
32. The subscriber station of claim 31 wherein the filtering performed at said subscriber station is performed by finite impulse response (FIR) filtering.
33. The subscriber station of claim 31 wherein the filtering performed at said subscriber station is performed by surface acoustical wave (SAW) filtering.
34. A subscriber station operating with increased capacity in a wireless data communication system, said subscriber station comprising:
a receiver configured to receive data on a first frequency in a frequency band expected to experience low interference;
a transmitter configured to transmit data on a second frequency in a frequency band expected to experience high interference;
wherein a portion of said transmitting and said receiving occur at the same time.
35. A base station operating with increased capacity in a wireless data communication system, said base station comprising:
a transmitter configured to transmit data on a first frequency in a frequency band expected to experience low interference;
a receiver configured to receive data on a second frequency in a frequency band expected to experience high interference;
wherein a portion of said transmitting and said receiving occur at the same time.
36. A method for increasing capacity of a wireless data communication system, said method comprising the steps of:
receiving, at a subscriber station, data on a first frequency in a frequency band expected to experience low interference;
transmitting, at said subscriber station, data on a second frequency in a frequency band expected to experience high interference;
wherein a portion of said transmitting and said receiving occur at the same time.
37. A method for increasing capacity of a wireless data communication system, said method comprising the steps of:
transmitting, at a base station, data on a first frequency in a frequency band expected to experience low interference;
receiving, at said base station, data on a second frequency in a frequency band expected to experience high interference;
wherein a portion of said transmitting and said receiving occur at the same time.