Techniques for setting up traffic channels in a communications system
View Patent ↗A control channel supporting traffic control in epochs is divided into two control subchannels each being less than or equal to about a half epoch in duration and occurring serially in time. Slot allocation data may be transmitted and received independently over the subchannels. One subchannel may be used for transmitting forward slot allocation data and the other subchannel may be used for transmitting reverse slot allocation data. The channel split into two subchannels may be a paging channel. The forward and reverse slot allocation data may be transmitted between a base station processor and field unit. Forward and reverse traffic data may be staggered by at least about half an epoch. Transmission of traffic data happens within about two epochs after the assignments.
1. A method for traffic channel set-up comprising:
dividing a control channel into a first control subchannel of less than or equal to about a half epoch in duration and a second control subchannel of less than or equal to about a half epoch in duration in the same control channel, the first and second control subchannels occurring serially in time; and
transmitting slot allocation data in the first and second control subchannels to allocate respective time division multiplying (TDM) slots wherein the slot allocation data in the first control subchannel is independent of the slot allocation data in the second control subchannel.
2. A method according to claim 1 wherein the control channel is a paging channel.
3. A method according to claim 1 wherein transmitting slot allocation data includes transmitting forward slot allocation data in the first control subchannel and transmitting reverse slot allocation data in the second control subchannel.
4. A method according to claim 3 wherein transmitting the slot allocation data includes separating the forward and reverse slot allocation data into amounts allowing for processing of the data within about the next epoch, respectively, after reception.
5. A method according to claim 3 further including staggering transmission of a reverse traffic channel defined by the reverse slot allocation data from transmission of a forward traffic channel defined by the forward slot allocation data.
6. The method according to claim 5 wherein staggering is at least about one-half epoch.
7. The method according to claim 3 further including collecting reverse channel allocation requests during transmission of slot allocation data over the first subchannel.
8. An apparatus for traffic channel set-up comprising:
a processor to divide a control channel into a first control subchannel of less than or equal to about a half epoch in duration and a control second subchannel of less than or equal to about a half epoch in duration in the same control channel, the first and second control subchannels occurring serially in time; and
a transmitter coupled to the processor to transmit independent slot allocation data in the first and second control subchannels to allocate respective time division multiplying (TDM) slots.
9. The apparatus according to claim 8 wherein the control channel is a paging channel.
10. The apparatus according to claim 8 wherein the transmitter transmits forward slot allocation data in the first control subchannel and reverse slot allocation data in the second control subchannel.
11. The apparatus according to claim 10 wherein the processor separates the forward and reverse slot allocation data into amounts allowing for processing of the data within about the next epoch, respectively, after reception.
12. The apparatus according to claim 10 wherein the transmitter staggers transmission of a reverse traffic channel defined by the reverse slot allocation data from the transmission of a forward traffic channel defined by the forward slot allocation data.
13. The apparatus according to claim 12 wherein the staggering is at least about one-half epoch.
14. The apparatus according to claim 10 wherein the processor collects reverse channel allocation requests during the transmission of slot allocation data over the first control subchannel.
15. A method for traffic channel set-up comprising:
dividing a control channel into a first control subchannel of less than or equal to about a half epoch in duration and a second control subchannel of less than or equal to about a half epoch in duration, the first and second control subchannels occurring serially in time; and
receiving slot allocation data in the first and second control subchannels to allocate respective time division multiplying (TDM) slots wherein the slot allocation data in the first control subchannel is independent of the slot allocation data in the second control subchannel.
16. A method according to claim 15 wherein the control channel is a paging channel.
17. A method according to claim 15 wherein receiving slot allocation data includes receiving forward slot allocation data in the first control subchannel and reverse slot allocation data in the second control subchannel.
18. A method according to claim 17 further including processing the forward and reverse slot allocation data within about the next epoch, respectively, after reception.
19. A method according to claim 17 further including receiving a reverse traffic channel defined by the reverse slot allocation data staggered from receiving a forward traffic channel defined by the forward slot allocation data.
20. The method according to claim 19 wherein the forward and reverse traffic is staggered at least about one-half epoch.
21. The method according to claim 19 wherein receiving includes receiving the reverse slot allocation data corresponding to reverse channel requests sent during receiving the first control subchannel.
22. An apparatus for traffic channel set-up comprising:
a processor to divide a control channel into a first control subchannel of less than or equal to about a half epoch in duration and a second control subchannel of less than or equal to about a half epoch in duration, the first and second subchannels occurring serially in time; and
a receiver to receive slot allocation data in the first and second subchannels to allocate respective time division multiplying (TDM) slots wherein the slot allocation data in the first control subchannel is independent of the slot allocation data in the second control subchannel.
23. The apparatus according to claim 22 wherein the control channel is a paging channel.
24. The apparatus according to claim 22 wherein the receiver receives forward slot allocation data in the first control subchannel and reverse slot allocation data in the second control subchannel.
25. The apparatus according to claim 24 wherein the processor processes the forward and reverse slot allocation data within about the next epoch, respectively, after reception.
26. The apparatus according to claim 24 wherein the receiver receives a reverse traffic channel defined by the reverse slot allocation data staggered from a forward traffic channel defined by the forward slot allocation data.
27. The apparatus according to claim 26 wherein the staggering is at least about one-half epoch.
28. The apparatus according to claim 24 wherein the receiver receives the reverse channel allocation data corresponding to reverse channel requests sent during receiving the first control subchannel.