Fast switching of forward link in wireless system
First Claim
Patent Images
1. A subscriber unit comprising:
- a processor configured to process control information received on a shared channel;
wherein the control information is received in a time slot of the shared channel;
wherein the control information includes an indication of code channels assigned to the subscriber unit prior to each code epoch; and
wherein the processor is further configured at a predetermined time interval after reception of the control information to receive the code channels indicated by the control information and to recover packet data from those code channels, wherein for each traffic channel epoch, a central controller to determine a schedule of assignment of traffic channels to active and standby terminals for that epoch, and for each terminal designated as active during the epoch, an active identifier is assigned.
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Abstract
A technique for distributing channel allocation information in a demand access communication system. Multiple access codes are used that have a defined code repeat period or code epoch. For each such epoch duration, a schedule of assignment of traffic channels to active terminals for each epoch is determined. For each terminal designated as active during the epoch, a list of active channels for such terminal unit is assigned. Prior to the start of each epoch, a channel set up message is sent on one of the forward link channels, such as a paging channel, indicating the lists of active channels for epochs of the associated traffic channel(s) that are to follow.
33 Citations
18 Claims
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1. A subscriber unit comprising:
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a processor configured to process control information received on a shared channel; wherein the control information is received in a time slot of the shared channel; wherein the control information includes an indication of code channels assigned to the subscriber unit prior to each code epoch; and wherein the processor is further configured at a predetermined time interval after reception of the control information to receive the code channels indicated by the control information and to recover packet data from those code channels, wherein for each traffic channel epoch, a central controller to determine a schedule of assignment of traffic channels to active and standby terminals for that epoch, and for each terminal designated as active during the epoch, an active identifier is assigned. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method comprising:
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processing, by a subscriber unit, control information received on a shared channel; wherein the control information is received in a time slot of the shared channel; wherein the control information includes an indication of code channels assigned to the subscriber unit prior to each code epoch; and at a predetermined time interval after reception of the control information, receiving, by the subscriber unit, the code channels indicated by the control information and to recover packet data from those code channels, wherein for each traffic channel epoch, a central controller to determine a schedule of assignment of traffic channels to active and standby terminals for that epoch, and for each terminal designated as active during the epoch, an active identifier is assigned. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A base station comprising:
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a processor configured to send control information to a subscriber unit on a shared channel; wherein the control information is sent in a time slot of the shared channel; wherein the control information includes an indication of code channels assigned to the subscriber unit prior to each code epoch; and wherein the processor is further configured at a predetermined time interval after transmission of the control information to transmit packet data on the code channels indicated by the control information, wherein for each traffic channel epoch, a central controller to determine a schedule of assignment of traffic channels to active and standby terminals for that epoch, and for each terminal designated as active during the epoch, an active identifier is assigned. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification