Claims
- 1. In a point-to-multipoint communication system with a base station and a plurality of remote stations, the method of transmitting data in a multicast mode to intended remote stations with different QAM levels, comprising the steps of:
embedding in each time slot multicast address data capable of identifying intended remote stations; and, transmitting the data at the lowest QAM level of the intended remote stations.
- 2. The method of claim 1, wherein the communication system is a time division duplex communication system.
- 3. The method of claim 2, wherein the communication system is a adaptive time division duplex communication system.
- 4. The method of claim 3, wherein the communication system is for broadband short distance radio communication of bursty data from one computer network to another computer network.
- 5. The method of claim 4, further comprising the step of dynamically determining the lowest QAM level of the intended stations.
- 6. The method of claim 5, wherein the lowest QAM level is dynamically determined on a frame by frame basis.
- 7. The method of claim 4, wherein the multicast address data is a broadcast temporary remote path identifier; and,
wherein the broadcast temporary remote path identifier is common the intended remote stations.
- 8. The method of claim 1 wherein the communication system is a TDMA communication system.
- 9. In a communication system with a base station and a plurality of remote stations, each remote station with circuits for evaluating RSI and switch tag field portions of received ATM cells, the method of operating in a broadcast mode comprising the steps of:
a. using the RSI as unique remote and broadcast address; b. evaluating, at each of the plurality of remote stations, the RSI of the ATM cells for a match with the unique remote address of the evaluating remote station; c. evaluating, at each of the plurality of remote stations, the RSI of the ATM cells for a match with a broadcast address of the evaluating remote station; d. routing the cells by the evaluating remote station if a unique remote RSI match; and, e. if the RSI matches the broadcast address of the evaluating remote station, evaluating the validity of the switch tag; and, using the switch tag for routing instructions where the switch tag is valid.
- 10. The method of claim 9, wherein the communication system is a time division duplex communication system.
- 11. The method of claim 10, wherein the communication system is an adaptive time division duplex communication system.
- 12. The method of claim 11, wherein the communication system is for broadband short distance radio communication of bursty data from one computer network to another computer network.
- 13. The method of claim 12, wherein step (d) further comprises the step of evaluating the validity of the switch tag prior to routing.
- 14. The method of claim 12, wherein the remote stations have multiple broadcast addresses.
- 15. The method of claim 12, wherein the switch tag is VPI or VPI/VCI.
- 16. The method of claim 12, comprising the steps of:
a. Using a 1st register to match the RSI with the unique remote address; b. Using a 2nd register to match the RSI with the broadcast address; and, c. Using a 3rd register to determine the validity of the switch tag.
- 17. The method of claim 12, wherein cells with invalid switch tags are discarded.
- 18. The method of claim 12, wherein broadcast mode is multicasting.
- 19. The method of claim 12, where each remote has multiple switch tag field filters, each switch tag filter corresponding to a respective switch tag in a set of switch tags assigned to each remote.
- 20. The method of claim 12, wherein each of the plurality of remote stations is capable of acting as the base station.
- 21. In a communication system with a base station and a plurality of remote stations, each remote station with circuits for evaluating RSI and switch tag portions of received ATM cells, the method of operating in a broadcast mode comprising the steps of:
a. using the RSI as unique remote and broadcast address; b. using a 1st register to match the RSI and the unique remote address; c. using a 2nd register to match the RSI and the broadcast address; d using a 3rd register to determine whether the ATM cell's switch tag matches one in a set of switch tags assigned to the remote. f. applying received cells to the 1st register and the 2nd register; g. passing cells to router if they pass 1st register; h. applying received cells to the 3rd register if they pass 2nd register; and, i. passing cells to router if they pass 3rd register.
- 22. The method of claim 21, wherein the communication system is a time division duplex communication system.
- 23. The method of claim 22, wherein the communication system is an adaptive time division duplex communication system.
- 24. The method of claim 23, wherein the communication system is for broadband short distance radio communication of bursty data from one computer network to another computer network.
- 25. The method of claim 24, wherein each of the plurality of remote stations has multiple broadcast addresses.
- 26. The method of claim 24, wherein the plurality of remotes shares a common broadcast address.
- 27. The method of claim 24, wherein the switch tag is a VPI or VPI/VCI.
- 28. The method of claim 24, wherein each of the plurality of remote stations is capable of acting as the base station.
- 29. In a point-to-multipoint adaptive time division duplex communication system for broadband short distance radio communication of bursty data from one computer network to another computer network, with a base station and a plurality of remote stations, the method of transmitting multicast data in a broadcast mode to intended remote stations where the intended remotes have different QAM levels, comprising the steps of:
embedding in each time slot multicast address data capable of identifying intended remote stations; and, transmitting the multiple copies of the multicast data, with the same multicast address, each at different QAM levels.
- 30. The method of claim 29, wherein the number of multiple copies is equal to the number of different QAM levels in the group of selected remotes.
- 31. In a point to multipoint communication system with a base station and a plurality of remotes, the method of multicasting to intended remotes using ATM protocol comprising the steps of:
embedding a Temporary remote path identifier in each ATM cell; and filtering on the switch tag at each of the plurality of remotes.
- 32. The method of claim 31, wherein the communication system is a time division duplex communication system.
- 33. The method of claim 32, wherein the communication system is an adaptive time division duplex communication system.
- 34. The method of claim 33, wherein the communication system is for broadband short distance radio communication of bursty data from one computer network to another computer network.
- 35. The method of claim 34, wherein the temporary remote path identifier is a broadcast temporary remote path identifier recognized by each of the plurality of remotes.
- 36. The method of claim 34, wherein the switch tag is a VPI/VCI.
- 37. The method of claim 34, wherein the switch tag is a VPI.
- 38. In a point to point communication system, using framed protocol, with a plurality of remotes the improvement of inserting a broadcast field in the forward portion of the frame to be broadcast.
- 39. The method of claim 38, wherein the field is inserted only if a message to be broadcast is in that frame.
- 40. The method of claim 39, wherein the field is inserted after a control time slot.
- 41. The method of claim 39, wherein the communication system is a time division duplex communication system.
- 42. The method of claim 41, wherein the communication system is adaptive.
- 43. The method of claim 42, wherein the communication system is for broadband short distance radio communication of bursty data from one computer network to another computer network.
- 44. The method of claim 43, wherein the remotes operate at different QAM
- 45. The method of claim 44, wherein the QAM of the broadcast field is the lowest QAM of all remotes
- 46. The method of claim 44, wherein the QAM of broadcast timeslot is the lowest QAM of the remotes intended to receive the frame.
- 47. The method of claim 44, wherein QAM rate for each of the plurality of remotes is dynamically determined.
- 48. The method of claim 47 wherein the QAM rate is dynamically determined on a frame by frame basis.
- 49. The method of claim 39 where the system is a Time Division Multiple Access communication system.
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] The present application is related to co-pending and commonly assigned PCT International Application No. PCT/US02/03323 entitled “Dynamic Bandwidth Allocation”, PCT/US02/03322 entitled “Demodulator Bursty Controller Profile”, PCT/US02/03193 entitled “Demodulator State Controller”, PCT/US02/03189 entitled “Frame to Frame Timing Synchronization”, the disclosures of which are hereby incorporated herein by reference. The aforementioned applications are related to commonly assigned U.S. Pat. No. 6,016,313 entitled “System and Method for Broadband Millimeter Wave Data Communication” issued Jan. 18, 2000 and currently undergoing two re-examinations under application Ser. No. 90/005,726 and application Ser. No. 90/005,974, U.S. Pat. No. 6,404,755 entitled “Multi-Level Information Mapping System and Method” issued Jun. 11, 2002, U.S. patent application Ser. No. 09/604,437, entitled “Maximizing Efficiency in a Multi-Carrier Time Division Duplex System Employing Dynamic Asymmetry”, which are a continuation-in-part of the U.S. Pat. No. 6,016,313 patent which are hereby incorporated herein by reference.
[0002] The present application is related to and is being concurrently filed with commonly assigned U.S. patent application Ser. No. ______, entitled “Look-Up Table for QRT”, U.S. patent application Ser. No. ______, entitled “Hybrid Agent-Oriented Object Model to Provide Software Fault Tolerance Between Distributed Processor Nodes, U.S. patent application Ser. No. ______, entitled “Airlink TDD Frame Format”, U.S. patent application Ser. No. ______, entitled “Data-Driven Interface Control Circuit and Network Performance Monitoring System and Method”, U.S. patent application Ser. No. ______, entitled “Virtual Sector Provisioning and Network Configuration System and Method”, U.S. patent application Ser. No. ______, entitled “System and Method for Supporting Automatic Protection Switching Between Multiple Node Pairs Using Common Agent Architecture”, U.S. patent application Ser. No. ______, entitled “System and Method for Transmitting Highly Correlated Preambles in QAM Constellations”, the disclosures of which is hereby incorporated herein by reference.