Scheduling method for supplemental channel resource
View Patent ↗A method ( 30 ) schedules the utilization of the supplemental channel of a base station transceiver ( 20 - 25 ). This scheduling includes time slot assignment as well as data transfer rate per time slot. One method simply selects the next time slot with a maximum rate for the primary base station transceiver ( 130 ). The method then selects the same time slot for each of the secondary links with the secondary base stations ( 132 ). The data is then simply sent to each of the BTSs ( 20 - 25 ) for transmission to the mobile station ( 10 ). In another alternative, a request is made for a supplemental channel usage for the primary link ( 144 ). Then secondary links are selected for transmission to the mobile station ( 10 ) only if they provide additional diversity gain ( 148 ) and resources are available at the secondary link BTSs.
1. A communication system for communicating with a mobile station comprising:
a base station coupled to said mobile station and for maintaining communication with said mobile station;
said base station including:
a selection distribution unit (SDU) for controlling communication of said communication system with said mobile station;
a first base station transceiver (BTS) having a primary channel;
a second BTS having a supplemental channel:
a time slot manager (TSM) for said primary channel and said supplemental channel; and
said SDU including means for scheduling said supplemental channel to correspond to a time slot and rate of the primary channel via said TSM for communicating with said mobile station wherein the SDU grants the scheduled supplemental channel without a response from the second BTS.
2. A communication system as claimed in claim 1 wherein:
said means for scheduling selects said time slot having maximum data rate for said first BTS and said second BTS; and
said means for scheduling selects said time slot for others of said plurality of BTSs.
3. A communication system as claimed in claim 1 wherein said first BTS includes a primary link in soft handoff with said mobile station.
4. A communication system as claimed in claim 1 wherein said second BTS includes a secondary link in soft handoff with said mobile station.
5. A communication system as claimed in claim 1 wherein said means for scheduling initiates communication with said mobile station via said time slot of first BTS and said second BTS.
6. A communication system as claimed in claim 1 wherein:
said means for scheduling requests said supplemental channel of said first BTS; and
said TSM of said first BTS assigning a time slot in said supplemental channel of said first BTS.
7. A communication system as claimed in claim 6 wherein means for scheduling initiates communication with said mobile station via said assigned time slot of said first BTS and via a corresponding time slot of said others of said plurality of BTSs.
8. A communication system as claimed in claim 6 wherein said first BTS includes a primary link in soft handoff with said mobile station.
9. A communication system as claimed in claim 6 wherein said second BTS includes a secondary link in soft handoff with said mobile station.
10. In a communication system including a base station having a selection distribution unit (SDU) and a plurality of base station transceivers (BTSs) coupled to a mobile station, a method for scheduling a supplemental channel comprising the steps of:
providing a primary link from a first BTS of the plurality of BTSs to the mobile station;
providing at least one secondary link from at least one other BTS of the plurality of BTSs to the mobile station;
allocating by the first BTS a time slot within the first BTS having a maximum transmission rate for communication with the mobile station; and
selecting by the at least one other BTS of the plurality of BTSs a same time slot as the time slot in the first BTS within the at least one other BTS for communication with the mobile station without a response from the at least one other BTS of the plurality of BTSs.
11. In a communication system the method for scheduling the supplemental channel as claimed in claim 10 wherein there is further included a step of sending information to the first BTS and the at least one other BTS for the mobile station.
12. In a communication system the method for scheduling the supplemental channel as claimed in claim 10 wherein there is further included a step of selecting all other BTSs of the plurality of BTSs having the secondary link with the mobile station.
13. In a communication system the method for scheduling the supplemental channel as claimed in claim 12 , wherein there is further included a step of sending information to the first BTS and to all the other BTSs having the secondary link with the mobile station.
14. In a communication system the method for scheduling the supplemental channel as claimed in claim 13 wherein there is further included a step of transmitting the information, by the first BTS and all the other BTSs having the secondary link, to the mobile station.
15. In a communication system the method for scheduling the supplemental channel as claimed in claim 14 wherein the step of transmitting includes a step of transmitting the information at the maximum transmission rate to the first BTS and to all other BTSs.