Method and system for controlling transmission energy in a variable rate gated communication system

• US 7,573,853 B2
• Filed: 04/10/2003
• Issued: 08/11/2009
• Est. Priority Date: 07/29/1999
• Status: Expired due to Fees

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Tiedemann, Edward G. Jr., Sarkar, Sandip, Saifuddin, Ahmed
• Primary Examiner(s): Ryman; Daniel J
• Assistant Examiner(s): PHAM, TITO Q
• Application Number:
  US10/411,968
• Publication Number:
  US 20030189911A1
• Time in Patent Office: 2,315 Days
• Field of Search: None
• US Class Current: 370/335
• CPC Class Codes: H04W 52/08 Closed loop power control
• CPC Class Codes: H04W 52/221 using past power control commands
• CPC Class Codes: H04W 52/225 Calculation of statistics, e.g. average, variance
• CPC Class Codes: H04W 52/267 taking into account the information rate
• CPC Class Codes: H04W 52/282 taking into account the speed of the mobile
• CPC Class Codes: H04W 52/283 Power depending on the position of the mobile
• CPC Class Codes: H04W 52/288 taking into account the usage mode, e.g. hands-free, data transmission, telephone
• CPC Class Codes: H04W 52/44 in connection with interruption of transmission

Abstract

Controlling transmission energy in a variable rate communication system that gates out portions of a frame in a predetermined and predicable fashion. In particular, the present invention describes a method and apparatus which identifies closed loop power control commands that have been generated erroneously based on portions of a frame that have been gated. The identified power control commands are ignored. In an alternative embodiment, if identification of the erroneous power control commands occurs after response measures have been taken, the transmitting station responds by setting the transmission energy back to the state it would have been in had the erroneous power control commands been identified prior to the response.

Claims

1. A method for controlling transmission energy of eighth rate frames, comprising:

gating off the transmission energy of a traffic channel and a pilot channel during half of each frame period; and

scaling the transmission energy of the traffic channel and the pilot channel by a predetermined value during the remaining half of each frame period,

wherein the transmission energy of the eighth rate frame is gated off either;

at alternating 1.25 millisecond intervals such that odd power control groups are gated off while even power control groups are transmitted at an average energy of 0.385 of the energy of a full rate frame;

or

at alternating 1.25 millisecond intervals such that even power control groups are gated off while odd power control groups are transmitted at an average energy of 0.385 of the energy of a full rate frame;

or

at alternating 2.5 millisecond intervals such that two consecutive power control groups are gated off while the following two consecutive power control groups are transmitted at an average energy of 0.32 of the energy of a full rate frame;

or

at alternating 5 millisecond intervals such that four consecutive power control groups are gated off while the following four consecutive power control groups are transmitted at an average energy of 0.32 of the energy of a full rate frame;

or

at alternating 10 millisecond intervals such that eight consecutive power control groups are gated off while the following eight consecutive power control groups are transmitted at an average energy of 0.335 of the energy of a full rate frame.

2. The method of claim 1 wherein the transmission energy of the eighth rate frame is gated off at alternating 1.25 millisecond intervals such that odd power control groups are gated off while even power control groups are transmitted at an average energy of 0.385 of the energy of a full rate frame.

3. The method of claim 1 wherein the transmission energy of the eighth rate frame is gated off at alternating 1.25 millisecond intervals such that even power control groups are gated off while odd power control groups are transmitted at an average energy of 0.385 of the energy of a full rate frame.

4. The method of claim 1 wherein the transmission energy of the eighth rate frame is gated off at alternating 2.5 millisecond intervals such that two consecutive power control groups are gated off while the following two consecutive power control groups are transmitted at an average energy of 0.32 of the energy of a full rate frame.

5. The method of claim 1 wherein the transmission energy of the eighth rate frame is gated off at alternating 5 millisecond intervals such that four consecutive power control groups are gated off while the following four consecutive power control groups are transmitted at an average energy of 0.32 of the energy of a full rate frame.

6. The method of claim 1 wherein the transmission energy of the eighth rate frame is gated off at alternating 10 millisecond intervals such that eight consecutive power control groups are gated off while the following eight consecutive power control groups are transmitted at an average energy of 0.335 of the energy of a full rate frame.

7. A wireless communications device for controlling transmission energy of eighth rate frames, comprising:

a power control command generator for generating commands to gate off transmission energy of a traffic channel and a pilot channel during half of each frame period; and

a power control processor for scaling the transmission energy of the traffic channel and the pilot channel by a predetermined value during the remaining half of each frame period,

wherein the power control processor gates off the transmission energy of the eighth rate frame either;

at alternating 1.25 millisecond intervals such that odd power control groups are gated off while even power control groups are transmitted at an average energy of 0.385 of the energy of a full rate frame;

or

at alternating 1.25 millisecond intervals such that even power control groups are gated off while odd power control groups are transmitted at an average energy of 0.385 of the energy of a full rate frame;

or

at alternating 2.5 millisecond intervals such that two consecutive power control groups are gated off while the following two consecutive power control groups are transmitted at an average energy of 0.32 of the energy of a full rate frame;

or

at alternating 5 millisecond intervals such that four consecutive power control groups are gated off while the following four consecutive power control groups are transmitted at an average energy of 0.32 of the energy of a full rate frame;

or

at alternating 10 millisecond intervals such that eight consecutive power control groups are gated off while the following eight consecutive power control groups are transmitted at an average energy of 0.335 of the energy of a full rate frame.

8. The device of claim 7 wherein the power control processor gates off the transmission energy of the eighth rate frame at alternating 1.25 millisecond intervals such that odd power control groups are gated off while even power control groups are transmitted at an average energy of 0.385 of the energy of a full rate frame.

9. The device of claim 7 wherein the power control processor gates off the transmission energy of the eighth rate frame at alternating 1.25 millisecond intervals such that even power control groups are gated off while odd power control groups are transmitted at an average energy of 0.385 of the energy of a full rate frame.

10. The device of claim 7 wherein the power control processor gates off transmission energy of the eighth rate frame at alternating 2.5 millisecond intervals such that two consecutive power control groups are gated off while the following two consecutive power control groups are transmitted at an average energy of 0.32 of the energy of a full rate frame.

11. The device of claim 7 wherein the power control processor gates off transmission energy of the eighth rate frame at alternating 5 millisecond intervals such that four consecutive power control groups are gated off while the following four consecutive power control groups are transmitted at an average energy of 0.32 of the energy of a full rate frame.

12. The device of claim 7 wherein the power control processor gates off transmission energy of the eighth rate frame at alternating 10 millisecond intervals such that eight consecutive power control groups are gated off while the following eight consecutive power control groups are transmitted at an average energy of 0.335 of the energy of a full rate frame.

13. An apparatus for controlling transmission energy of eighth rate frames, comprising:

means for generating commands to gate off transmission energy of a traffic channel and a pilot channel during half of each frame period; and

means for scaling the transmission energy of the traffic channel and the pilot channel by a predetermined value during the remaining half of each frame period,

wherein the means for scaling the transmission energy of the traffic channel includes either;

means for gating off the transmission energy of the eighth rate frame at alternating 1.25 millisecond intervals such that odd power control groups are gated off while even power control groups are transmitted at an average energy of 0.385 of the energy of a full rate frame;

or

means for gating off the transmission energy of the eighth rate frame at alternating 1.25 millisecond intervals such that even power control groups are gated off while odd power control groups are transmitted at an average energy of 0.385 of the energy of a full rate frame;

or

means for gating off the transmission energy of the eighth rate frame at alternating 2.5 millisecond intervals such that two consecutive power control groups are gated off while the following two consecutive power control groups are transmitted at an average energy of 0.32 of the energy of a full rate frame;

or

means for gating off the transmission energy of the eighth rate frame at alternating 5 millisecond intervals such that four consecutive power control groups are gated off while the following four consecutive power control groups are transmitted at an average energy of 0.32 of the energy of a full rate frame;

or

means for gating off the transmission energy of the eighth rate frame at alternating 10 millisecond intervals such that eight consecutive power control groups are gated off while the following eight consecutive power control groups are transmitted at an average energy of 0.335 of the energy of a full rate frame.

14. A remote station for controlling transmission energy of eighth rate frames, comprising:

a power control command generator for generating commands to gate off transmission energy of a traffic channel and a pilot channel during half of each frame period;

a power control processor for scaling the transmission energy of the traffic channel and the pilot channel by a predetermined value during the remaining half of each frame period; and

an antenna configured to transmit a signal on the traffic channel or the pilot channel,

wherein the power control processor gates off the transmission energy of the eighth rate frame either;

at alternating 1.25 millisecond intervals such that odd power control groups are gated off while even power control groups are transmitted at an average energy of 0.385 of the energy of a full rate frame;

or

at alternating 1.25 millisecond intervals such that even power control groups are gated off while odd power control groups are transmitted at an average energy of 0.385 of the energy of a full rate frame;

or

at alternating 2.5 millisecond intervals such that two consecutive power control groups are gated off while the following two consecutive power control groups are transmitted at an average energy of 0.32 of the energy of a full rate frame;

or

at alternating 5 millisecond intervals such that four consecutive power control groups are gated off while the following four consecutive power control groups are transmitted at an average energy of 0.32 of the energy of a full rate frame;

or

at alternating 10 millisecond intervals such that eight consecutive power control groups are gated off while the following eight consecutive power control groups are transmitted at an average energy of 0.335 of the energy of a full rate frame.

15. The remote station of claim 14 wherein the power control processor gates off the transmission energy of the eighth rate frame at alternating 1.25 millisecond intervals such that odd power control groups are gated off while even power control groups are transmitted at an average energy of 0.385 of the energy of a full rate frame.

16. The remote station of claim 14 wherein the power control processor gates off the transmission energy of the eighth rate frame at alternating 1.25 millisecond intervals such that even power control groups are gated off while odd power control groups are transmitted at an average energy of 0.385 of the energy of a full rate frame.

17. The remote station of claim 14 wherein the power control processor gates off transmission energy of the eighth rate frame at alternating 2.5 millisecond intervals such that two consecutive power control groups are gated off while the following two consecutive power control groups are transmitted at an average energy of 0.32 of the energy of a full rate frame.

18. The remote station of claim 14 wherein the power control processor gates off transmission energy of the eighth rate frame at alternating 5 millisecond intervals such that four consecutive power control groups are gated off while the following four consecutive power control groups are transmitted at an average energy of 0.32 of the energy of a full rate frame.

19. The remote station of claim 14 wherein the power control processor gates off transmission energy of the eighth rate frame at alternating 10 millisecond intervals such that eight consecutive power control groups are gated off while the following eight consecutive power control groups are transmitted at an average energy of 0.335 of the energy of a full rate frame.

20. A base station for controlling transmission energy of eighth rate frames, comprising:

a power control command generator for generating commands to gate off transmission energy of a traffic channel and a pilot channel during half of each frame period;

a power control processor for scaling the transmission energy of the traffic channel and the pilot channel by a predetermined value during the remaining half of each frame period; and

a transmitter configured to amplify information for transmission on the traffic channel or the pilot channel,

wherein the power control processor gates off the transmission energy of the eighth rate frame either;

at alternating 1.25 millisecond intervals such that odd power control groups are gated off while even power control groups are transmitted at an average energy of 0.385 of the energy of a full rate frame;

or

at alternating 1.25 millisecond intervals such that even power control groups are gated off while odd power control groups are transmitted at an average energy of 0.385 of the energy of a full rate frame;

or

at alternating 2.5 millisecond intervals such that two consecutive power control groups are gated off while the following two consecutive power control groups are transmitted at an average energy of 0.32 of the energy of a full rate frame;

or

at alternating 5 millisecond intervals such that four consecutive power control groups are gated off while the following four consecutive power control groups are transmitted at an average energy of 0.32 of the energy of a full rate frame;

or

at alternating 10 millisecond intervals such that eight consecutive power control groups are gated off while the following eight consecutive power control groups are transmitted at an average energy of 0.335 of the energy of a full rate frame.