초록 ▼

The present invention is a novel and improved method and apparatus for supervising a potentially gated channel in a wireless communication system. The first method is an extension of the method used in IS-95 with empty frames simply ignored, but with potentially different thresholds. The mobile stat

The present invention is a novel and improved method and apparatus for supervising a potentially gated channel in a wireless communication system. The first method is an extension of the method used in IS-95 with empty frames simply ignored, but with potentially different thresholds. The mobile station maintains a counter of consecutive bad frames, COUNT1, and a counter of consecutive good frames, COUNT 2. COUNT1 and COUNT2 are set to zero at the beginning of a call. For each frame received, the mobile station determines if it is a good frame, a bad frame, or an empty frame. If the received frame is a good frame, COUNT1 is reset to zero and COUNT2 is incremented by 1. If the received frame is a bad frame, COUNT1 is incremented by one and COUNT2 is reset to zero. If the received frame is an empty frame, COUNT1 and COUNT2 are unchanged. If COUNT1 reaches a threshold value, TH1, the mobile station shall disable its transmitter. Thereafter, if COUNT2 reaches a threshold value, TH2, the mobile station shall re-enable its transmitter. The mobile station resets its fade timer to X seconds whenever COUNT2 is greater than or equal to TH3.

대표청구항 ▼

We claim: 1. A method for supervising a channel in a system supporting a discontinuous transmission mode comprising: determining if a frame is empty; and sending a supervisory frame wherein the supervisory frame contains pre-defined bits known to a mobile station and is transmitted at a lowest dat

We claim: 1. A method for supervising a channel in a system supporting a discontinuous transmission mode comprising: determining if a frame is empty; and sending a supervisory frame wherein the supervisory frame contains pre-defined bits known to a mobile station and is transmitted at a lowest data rate that has been negotiated between a base station and a mobile station. 2. A method of supervising a channel in a system supporting a discontinuous transmission mode, comprising: transmitting a supervisory frame for a discontinuous transmission when a number of consecutive empty frames exceeds a threshold, wherein the supervisory frame is transmitted at a lowest data rate that has been negotiated between a base station and a mobile station. 3. A method of supervising a channel, comprising: detecting a number of consecutive empty frames on the channel; and transmitting a message when a number of consecutive empty frames exceeds a threshold, the message requiring a supervisory frame from a base station wherein the supervisory frame contains pre-defined bits known to a mobile station and transmitted at a lowest data rate that has been negotiated between the base station and the mobile station. 4. The method of claim 3, wherein the supervisory frame is an acknowledgement. 5. A remote station, comprising: an empty frame detector that detects when a frame is empty and sends a signal indicating such; a counter that counts a number of consecutive empty frames; a control processor coupled to the empty frame detector and the counter, the control processor resets the counter when a bad frame is detected and when a good frame is detected, and when a number of consecutive empty frames exceeds a threshold, the control processor sends a signal indicating such; a message generator coupled to the control processor, the message generator generating a message requiring a reply from a base station when it receives the signal; and a transmitter for transmitting the message. 6. The remote station of claim 5, further comprising an Ec/Io calculator that computes an aggregated Active Set pilot Ec/Io by adding a pilot signal of a forward link signal with Ec/Io values of pilots from other base stations in an Active Set of a mobile station. 7. A method of supervising a channel in a system supporting a discontinuous transmission mode, comprising: detecting a condition where there are no data frames to be transmitted on the channel during a specified time period; and transmitting, periodically, a supervisory frame while the condition exists. 8. The method of claim 7 wherein the supervisory frame is periodically transmitted at the beginning of intervals aligned with a system time. 9. The method of claim 7 wherein the supervisory frame is transmitted at a lowest possible data rate negotiated between a mobile station and a base station. 10. A base station, comprising: a control processor for detecting a condition where there are no data frames to be transmitted on a channel during a specified time period; and a transmitter for periodically transmitting a supervisory frame while the condition exists. 11. The base station of claim 10 wherein the supervisory frame is periodically transmitted at the beginning of intervals aligned with a system time. 12. The base station of claim 10 wherein the supervisory frame is transmitted at a lowest possible data rate negotiated between a mobile station and a base station. 13. An apparatus for supervising a channel in a system supporting a discontinuous transmission mode, comprising: means for receiving a message from a remote station, the message indicating that a number of consecutive empty frames exceeds a threshold; and means for transmitting a response to the message. 14. A base station for supervising a channel in a system supporting a discontinuous transmission mode, comprising: a control processor for receiving a message from a remote station, the message indicating that a number of consecutive empty frames exceeds a threshold; and a transmitter for transmitting a response to the message. 15. A method of supervising a channel, comprising: receiving a message from a remote station, the message indicating that a number of consecutive empty frames exceeds a threshold; and transmitting a response to the message. 16. A method of supervising a channel, comprising: means for detecting a number of consecutive empty frames on the channel; and means for transmitting a message when a number of consecutive empty frames exceeds a threshold, the message requiring a reply from a base station. 17. A method of supervising a channel in a system supporting a discontinuous transmission mode, comprising: detecting a number of empty frames received on the channel during a first interval; and transmitting a message when the number of empty frames during the first interval exceeds a threshold, the message requiring a supervisory frame from a base station wherein the supervisory frame contains pre-defined bits known to a mobile station and transmitted at a lowest data rate that has been negotiated between the base station and the mobile station. 18. The method of claim 17, wherein the supervisory frame is an acknowledgement. 19. A remote station, comprising: a control processor for detecting a number of empty frames received on a channel during a first interval; and a transmitter for transmitting a message when the number of empty frames exceeds a threshold, the message requiring a supervisory frame from a base station wherein the supervisory frame contains pre-defined bits known to a mobile station and transmitted at a lowest data rate that has been negotiated between the base station and the mobile station. 20. An apparatus for supervising a channel in a system supporting a discontinuous transmission mode, comprising: means for detecting a number of empty frames received on the channel during a first interval; and means for transmitting a message when the number of empty frames exceeds a threshold, the message requiring a supervisory frame from a base station wherein the supervisory frame contains pre-defined bits known to a mobile station and transmitted at a lowest data rate that has been negotiated between the base station and the mobile station. 21. An apparatus for supervising a channel in a system supporting a discontinuous transmission mode, comprising: means for receiving a message from a remote station, the message indicating a number of empty frames within a first interval exceeds a threshold; and means for transmitting a supervisory frame in response to the message wherein the supervisory frame contains pre-defined bits known to a mobile station and transmitted at a lowest data rate that has been negotiated between the base station and the mobile station. 22. A base station for supervising a channel in a system supporting a discontinuous transmission mode, comprising: receiver adapted to receive a message from a remote station, the message indicating a number of empty frames within a first interval exceeds a threshold; control processor for processing the message; and transmitter for transmitting a supervisory frame in response to the message wherein the supervisory frame contains pre-defined bits known to a mobile station and transmitted at a lowest data rate that has been negotiated between the base station and the mobile station. 23. A method for supervising a channel in a system supporting a discontinuous transmission mode, comprising: receiving a message from a remote station, the message indicating a number of empty frames within a first interval exceeds a threshold; and transmitting a supervisory frame in response to the message wherein the supervisory frame contains pre-defined bits known to a mobile station and transmitted at a lowest data rate that has been negotiated between the base station and the mobile station. 24. A base station, comprising: a control processor for detecting a number of consecutive empty frames for transmission in a discontinuous transmission mode on a channel; and a transmitter for transmitting a supervisory frame when the number of consecutive empty frames exceeds a threshold wherein the supervisory frame contains pre-defined bits known to a mobile station and transmitted at a lowest data rate that has been negotiated between the base station and the mobile station.