Channel structure for communication systems

• US 7,519,044 B1
• Filed: 02/14/2000
• Issued: 04/14/2009
• Est. Priority Date: 09/16/1997
• Status: Expired due to Fees

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Tiedeman, Edward G. Jr., Jou, Yu-Chen, Rezaiifar, Ramin
• Primary Examiner(s): LY, ANH VU H
• Application Number:
  US09/503,401
• Time in Patent Office: 3,347 Days
• Field of Search: 370/310, 370/328, 370/329, 370335-337, 370341-345, 370/431, 370/437, 370/441, 370/468, 370/479, 370/232, 370/236, 370/324, 370347-350, 455/422, 455/450, 455/452, 455/500
• US Class Current: 370/349
• CPC Class Codes: H04B 7/18584 Arrangements for data networking, i.e. for data packet routing, for congestion control data switching networks H04L12/00
• CPC Class Codes: H04B 7/264 for data rate control
• CPC Class Codes: H04B 7/2656 for structure of frame, burst
• CPC Class Codes: H04W 36/18 for allowing seamless reselection, e.g. soft reselection
• CPC Class Codes: H04W 48/12 using downlink control channel
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 52/0245 according to signal strength
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 76/27 Transitions between radio resource control [RRC] states
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A channel structure for use in communication systems. Two sets of physical channels, one for the forward link and another for the reverse link, are utilized to facilitate communication of a variety of logical channels. The physical channels comprise data and control channels. In the exemplary embodiment, the data channels comprise fundamental channels which are used to transmit voice traffic, data traffic, high speed data, and other overhead information and supplemental channels which are used to transmit high speed data. The fundamental channels can be released when the remote stations are idle to more fully utilized the available capacity. The control channels are used to transmit paging and control messages and scheduling information.

Claims

1. A method for transmitting data comprising the steps of:

transmitting, prior to and independent of said data transmission, a message indicative of the rate of said data and a time interval over which said data will be transmitted at said rate; and

transmitting said data at said rate during said time interval using a data transmission channel;

wherein said message comprises;

an indication of a frame type selected from a plurality of frame types including link schedule, channel active set, and erasure-indicator bit, wherein each of each of these frame types is transmitted at some time;

an indication of said rate of said data; and

an indication of said time interval;

wherein said link schedule indicates the duration of said data transmission;

wherein said channel active set indicates a set of base stations; and

wherein said erasure-indicator-bit indicates an erasure of previously received frames.

2. The method of claim 1 wherein said link schedule is selected from a group consisting of a forward link schedule and a reverse link schedule.

3. The method of claim 2 wherein said forward link schedule is contained in a 10 bit forward link schedule message comprising:

2 bits indicating that a frame is a forward link schedule message;

4 bits indicating an assigned forward link rate of said data channel; and

4 bits indicating the duration for which said data channel is assigned said forward link rate.

4. The method of claim 2 wherein said reverse link schedule is contained in an 18 bit reverse link schedule message comprising:

2 bits indicating that a frame is a reverse link schedule message;

4 bits indicating a granted reverse link rate of said data channel; and

,

12 bits indicating the duration for which said data channel is granted said reverse link rate, wherein each subset of 4 bits represents a single carrier.

5. The method of claim 1 wherein said channel active set is contained in an 8 bit channel active set message comprising:

2 bits indicating that a frame is a channel active set message; and

,

6 bits indicating base stations in the active set, wherein each bit represents a base station.

6. The method of claim 1 wherein said erasure-indicator-bit is contained in an 5 bit erasure-indicator-bit message comprising:

2 bits indicating that a frame is an erasure-indicator-bit message;

1 bit indicating an erasure-indicator-bit for a fundamental data channel;

1 bit indicating an erasure-indicator-bit for a supplemental data channel; and

,

1 bit indicating demodulation of said fundamental channel.

7. An apparatus for transmitting comprising:

a transmitter for transmitting, prior to and independent of a data transmission, a message indicative of the rate of said data and a time interval over which said data will be transmitted at said rate;

a processor configured to form said message to include at least an indication of a frame type selected from a plurality of frame types including link schedule, channel active set, and erasure-indicator bit, wherein the transmitter transmits each of these frame types is transmitted at some time, an indication of said rate of said data; and

an indication of said time interval;

wherein said link schedule indicates the duration of said data transmission;

wherein said channel active set indicates a set of base stations; and

,

wherein said erasure-indicator-bit indicates an erasure of previously received frames.

8. The apparatus of claim 7 wherein said link schedule is selected from a group consisting of a forward link schedule and a reverse link schedule.

9. The apparatus of claim 8 wherein said forward link schedule is contained in a 10 bit forward link schedule message comprising:

2 bits indicating that a frame is a forward link schedule message;

4 bits indicating an assigned forward link rate of a data channel; and

4 bits indicating the duration for which said data channel is assigned said forward link rate.

10. The apparatus of claim 8 wherein said reverse link schedule is contained in an 18 bit reverse link schedule message comprising:

2 bits indicating that a frame is a reverse link schedule message;

4 bits indicating a granted reverse link rate of a data channel; and

,

12 bits indicating the duration for which said data channel is granted said reverse link rate, wherein each subset of 4 bits represents a single carrier.

11. The apparatus of claim 7 wherein said channel active set is contained in an 8 bit channel active set message comprising:

2 bits indicating that a frame is a channel active set message; and

,

6 bits indicating base stations in the active set, wherein each bit represents a base station.

12. The apparatus of claim 7 wherein said erasure-indicator-bit is contained in an 5 bit erasure-indicator-bit message comprising:

2 bits indicating that a frame is an erasure-indicator-bit message;

1 bit indicating an erasure-indicator-bit for a fundamental data channel;

1 bit indicating an erasure-indicator-bit for a supplemental data channel; and

, 1 bit indicating the demodulation of said fundamental channel.

13. An apparatus for transmitting comprising:

a transmitting means for transmitting, prior to and independent of a data transmission, a message indicative of the rate of said data and a time interval over which said data will be transmitted at said rate;

a controller means configured to form said message to include at least an indication of a frame type selected from a plurality of frame types including link schedule, channel active set, and erasure-indicator bit, wherein the transmitting means transmits each of these frame types at some time, an indication of said rate of said data; and

an indication of said time interval;

wherein said link schedule indicates the duration of said data transmission;

wherein said channel active set indicates a set of base stations; and

,

wherein said erasure-indicator-bit indicates an erasure of previously received frames.

14. The apparatus of claim 13 wherein said link schedule is selected from a group consisting of a forward link schedule and a reverse link schedule.

15. The apparatus of claim 14 wherein said forward link schedule is contained in a 10 bit forward link schedule message comprising:

2 bits indicating that a frame is a forward link schedule message;

4 bits indicating an assigned forward link rate of a data channel; and

4 bits indicating the duration for which said data channel is assigned said forward link rate.

16. The apparatus of claim 14 wherein said reverse link schedule is contained in an 18 bit reverse link schedule message comprising:

2 bits indicating that a frame is a reverse link schedule message;

4 bits indicating a granted reverse link rate of a data channel; and

,

12 bits indicating the duration for which said data channel is granted said reverse link rate, wherein each subset of 4 bits represents a single carrier.

17. The apparatus of claim 13 wherein said channel active set is contained in an 8 bit channel active set message comprising:

2 bits indicating that a frame is a channel active set message; and

,

6 bits indicating base stations in the active set, wherein each bit represents a base station.

18. The apparatus of claim 13 wherein said erasure-indicator-bit is contained in an 5 bit erasure-indicator-bit message comprising:

2 bits indicating that a frame is an erasure-indicator-bit message;

1 bit indicating an erasure-indicator-bit for a fundamental data channel;

1 bit indicating an erasure-indicator-bit for a supplemental data channel; and

, 1 bit indicating the demodulation of said fundamental channel.

19. A method for transmitting data comprising the steps of:

transmitting, prior to and independent of said data transmission, a message indicative of the rate of said data and a time interval over which said data will be transmitted at said rate;

transmitting said data at said rate during said time interval using a data transmission channel;

wherein said message comprises;

an indication of a frame type selected from a plurality of frame types including link schedule, channel active set, and erasure-indicator bit, wherein each of each of these frame types is transmitted at some time;

an indication of said rate of said data; and

an indication of said time interval; and

,

wherein said link schedule is a forward link scheduling information contained in a 10 bit forward link schedule message comprising;

2 bits indicating that a frame is a forward link schedule message;

4 bits indicating an assigned forward link rate of said data channel; and

4 bits indicating the duration for which said data channel is assigned said forward link rate.

20. A method for transmitting data comprising the steps of:

transmitting, prior to and independent of said data transmission, a message indicative of the rate of said data and a time interval over which said data will be transmitted at said rate;

transmitting said data at said rate during said time interval using a data transmission channel;

wherein said message comprises;

an indication of a frame type selected from a plurality of frame types including link schedule, channel active set, and erasure-indicator bit, wherein each of each of these frame types is transmitted at some time;

an indication of said rate of said data; and

an indication of said time interval;

wherein said link schedule is a reverse link scheduling information contained in an 18 bit reverse link schedule message comprising;

2 bits indicating that a frame is a reverse link schedule message;

4 bits indicating a granted reverse link rate of said data channel; and

12 bits indicating the duration for which said data channel is granted said reverse link rate, wherein each subset of 4 bits represents a single carrier.

21. A method for transmitting data comprising the steps of:

transmitting, prior to and independent of said data transmission, a message indicative of the rate of said data and a time interval over which said data will be transmitted at said rate;

transmitting said data at said rate during said time interval using a data transmission channel;

wherein said message comprises;

an indication of a frame type selected from a plurality of frame types including link schedule, channel active set, and erasure-indicator bit, wherein each of each of these frame types is transmitted at some time;

an indication of said rate of said data; and

an indication of said time interval; and

,

wherein said channel active set is contained in an 8 bit channel active set message comprising;

2 bits indicating that a frame is a channel active set message;

6 bits indicating base stations in the active set, wherein each bit represents a base station.

22. A method for transmitting data comprising the steps of:

transmitting, prior to and independent of said data transmission, a message indicative of the rate of said data and a time interval over which said data will be transmitted at said rate;

transmitting said data at said rate during said time interval using a data transmission channel;

wherein said message comprises;

an indication of a frame type selected from a plurality of frame types including link schedule, channel active set, and erasure-indicator bit, wherein each of each of these frame types is transmitted at some time;

an indication of said rate of said data; and

an indication of said time interval; and

,

wherein said erasure-indicator-bit is contained in an 5 bit erasure-indicator-bit message comprising;

2 bits indicating that a frame is an erasure-indicator-bit message;

1 bit indicating an erasure-indicator-bit for a fundamental data channel;

1 bit indicating an erasure-indicator-bit for a supplemental data channel; and

,

1 bit indicating demodulation of said fundamental channel.

23. An apparatus for transmitting comprising:

a transmitter for transmitting, prior to and independent of a data transmission, a message indicative of the rate of said data and a time interval over which said data will be transmitted at said rate;

a processor configured to form said message to include at least an indication of a frame type selected from a plurality of frame types including link schedule, channel active set, and erasure-indicator bit, wherein the transmitter transmits each of these frame types at some time, an indication of said rate of said data; and

an indication of said time interval; and

,

wherein said link schedule is a forward link scheduling information contained in a 10 bit forward link schedule message comprising;

2 bits indicating that a frame is a forward link schedule message;

4 bits indicating an assigned forward link rate of a data channel; and

4 bits indicating the duration for which said data channel is assigned said forward link rate.

24. An apparatus for transmitting comprising:

a transmitter for transmitting, prior to and independent of a data transmission, a message indicative of the rate of said data and a time interval over which said data will be transmitted at said rate;

a processor configured to form said message to include at least an indication of a frame type selected from a plurality of frame types including link schedule, channel active set, and erasure-indicator bit, wherein the transmitter transmits each of these frame types at some time, an indication of said rate of said data; and

an indication of said time interval; and

,

wherein said link schedule is a reverse link scheduling information contained in an 18 bit reverse link schedule message comprising;

2 bits indicating that a frame is a reverse link schedule message;

4 bits indicating a granted reverse link rate of a data channel; and

12 bits indicating the duration for which said data channel is granted said reverse link rate, wherein each subset of 4 bits represents a single carrier.

25. An apparatus for transmitting comprising:

a transmitter for transmitting, prior to and independent of a data transmission, a message indicative of the rate of said data and a time interval over which said data will be transmitted at said rate;

a processor configured to form said message to include at least an indication of a frame type selected from a plurality of frame types including link schedule, channel active set, and erasure-indicator bit, wherein the transmitter transmits each of these frame types at some time, an indication of said rate of said data; and

an indication of said time interval;

wherein said channel active set is contained in an 8 bit channel active set message comprising;

2 bits indicating that a frame is a channel active set message; and

,

6 bits indicating base stations in the active set, wherein each bit represents a base station.

26. An apparatus for transmitting comprising:

a transmitter for transmitting, prior to and independent of a data transmission, a message indicative of the rate of said data and a time interval over which said data will be transmitted at said rate;

a processor configured to form said message to include at least an indication of a frame type selected from a plurality of frame types including link schedule, channel active set, and erasure-indicator bit, wherein the transmitter transmits each of these frame types at some time, an indication of said rate of said data; and

an indication of said time interval;

wherein said erasure-indicator-bit is contained in an 5 bit erasure-indicator-bit message comprising;

2 bits indicating that a frame is an erasure-indicator-bit message;

1 bit indicating an erasure-indicator-bit for a fundamental data channel;

1 bit indicating an erasure-indicator-bit for a supplemental data channel; and

,

1 bit indicating demodulation of said fundamental channel.

27. An apparatus for transmitting comprising:

a transmitting means for transmitting, prior to and independent of a data transmission, a message indicative of the rate of said data and a time interval over which said data will be transmitted at said rate;

a processor configured to form said message to include at least an indication of a frame type selected from a plurality of frame types including link schedule, channel active set, and erasure-indicator bit, wherein the transmitter transmits each of these frame types at some time, an indication of said rate of said data; and

an indication of said time interval; and

,

wherein said link schedule is a forward link scheduling information contained in a 10 bit forward link schedule message comprising;

2 bits indicating that a frame is a forward link schedule message;

4 bits indicating an assigned forward link rate of a data channel; and

4 bits indicating the duration for which said data channel is assigned said forward link rate.

28. An apparatus for transmitting comprising:

a transmitting means for transmitting, prior to and independent of a data transmission, a message indicative of the rate of said data and a time interval over which said data will be transmitted at said rate;

a processor configured to form said message to include at least an indication of a frame type selected from a plurality of frame types including link schedule, channel active set, and erasure-indicator bit, wherein the transmitter transmits each of these frame types at some time, an indication of said rate of said data; and

an indication of said time interval; and

,

wherein said link schedule is a reverse link scheduling information contained in an 18 bit reverse link schedule message comprising;

2 bits indicating that a frame is a reverse link schedule message;

4 bits indicating a granted reverse link rate of a data channel; and

12 bits indicating the duration for which said data channel is granted said reverse link rate, wherein each subset of 4 bits represents a single carrier.

29. An apparatus for transmitting comprising:

a transmitting means for transmitting, prior to and independent of a data transmission, a message indicative of the rate of said data and a time interval over which said data will be transmitted at said rate;

a processor configured to form said message to include at least an indication of a frame type selected from a plurality of frame types including link schedule, channel active set, and erasure-indicator bit, wherein the transmitter transmits each of these frame types at some time, an indication of said rate of said data; and

an indication of said time interval; and

,

wherein said channel active set is contained in an 8 bit channel active set message comprising;

2 bits indicating that a frame is a channel active set message; and

,

6 bits indicating base stations in the active set, wherein each bit represents a base station.

30. An apparatus for transmitting comprising:

a transmitting means for transmitting, prior to and independent of a data transmission, a message indicative of the rate of said data and a time interval over which said data will be transmitted at said rate;

a processor configured to form said message to include at least an indication of a frame type selected from a plurality of frame types including link schedule, channel active set, and erasure-indicator bit, wherein the transmitter transmits each of these frame types at some time, an indication of said rate of said data; and

an indication of said time interval; and

,

wherein said erasure-indicator-bit is contained in an 5 bit erasure-indicator-bit message comprising;

2 bits indicating that a frame is an erasure-indicator-bit message;

1 bit indicating an erasure-indicator-bit for a fundamental data channel;

1 bit indicating an erasure-indicator-bit for a supplemental data channel; and

,

1 bit indicating demodulation of said fundamental channel.