Method and apparatus for time-based reception of transmissions in a wireless communication system

• US 8,208,388 B2
• Filed: 08/13/2004
• Issued: 06/26/2012
• Est. Priority Date: 08/16/2001
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Casaccia, Lorenzo, Sinnarajah, Ragulan
• Primary Examiner(s): Pham, Chi
• Assistant Examiner(s): HAILE, FEBEN
• Application Number:
  US10/918,035
• Publication Number:
  US 20050089004A1
• Time in Patent Office: 2,874 Days
• Field of Search: 370/456, 370/469, 370/341, 370/437, 370/252, 370/329, 370/348, 370/443, 370/465, 370/241, 370/241.1, 370/242, 370/229, 370/230, 370/230.1, 370/231, 370/232, 370/235, 370/236, 714/48, 714/55
• US Class Current: 370/252
• CPC Class Codes: H04L 1/0007 by modifying the frame length
• CPC Class Codes: H04L 1/1657 Implicit acknowledgement of correct or incorrect reception, e.g. with a moving window
• CPC Class Codes: H04L 1/1685 the supervisory signal being transmitted in response to a specific request, e.g. to a polling signal
• CPC Class Codes: H04L 1/1848 Time-out mechanisms
• CPC Class Codes: H04L 1/188 Time-out mechanisms

Abstract

Method for segmented message transmission wherein each message is first divided into segments and the segments are fragmented. A segment parameter is applied to each segment, and a segment identifier to each fragment. The fragments are provided to a lower level for preparation into frames for transmission. One embodiment is applied to the transmission of short duration messages, such as control messages. A timer is used to detect an erasure within a plurality of transmission frames, wherein the timer uses an average inter-arrival time period between transmitted frames to determine a missing frame. In one embodiment, the time period is given as α*AIT, wherein α is a constant value, and AIT is the average inter-arrival time of frames.

Claims

1. In a wireless communication system having a base station controller and a plurality of base stations, each of the plurality of base stations adapted for communication with a plurality of mobile stations, a method comprising:

receiving a plurality of transmission frames corresponding to a segment, each of the plurality of transmission frames having an identifier;

detecting a first frame erasure within the plurality of transmission frames;

initiating a first timer upon detecting the first frame erasure, wherein the first timer has a first time period determined by an average inter-arrival time period between transmitted frames;

prior to expiration of the first timer, detecting a second frame erasure;

initiating a second timer;

stopping the first timer; and

determining an end of the segment based on the expiration of the first time, the reset of the first timer, or the expiration of the second timer.

2. The method of claim 1, wherein the first time has a first time period determined by an average inter-arrival time period between transmitted frames.

3. The method of claim 2, wherein the second timer has a second time period, the second time period being associated with the first time period.

4. The method of claim 1, wherein a length of the segment is based on a channel quality estimate.

5. A wireless apparatus, comprising:

means for receiving a plurality of transmission frames corresponding to a segment;

means for detecting a first frame erasure;

first timer means initiated upon detection of the first frame erasure for a period;

means for detecting a second frame erasure prior to expiration of the first timer;

means for initiating a second timer upon detecting the second frame erasure;

means for stopping the first timer; and

means for determining an end of the segment as a result of the expiration of the first time, the reset of the first timer, or the expiration of the second timer.

6. The wireless apparatus of claim 5, wherein the means for determining an end of the segment is adapted to determine an identifier corresponding to a second frame associated with the second frame erasure.

7. The wireless apparatus of claim 5, wherein the period is based upon an average inter-arrival time period between transmitted frames.

8. The wireless apparatus of claim 5, wherein a length of the segment is based on a channel quality estimate.

9. A non-transitory computer-readable medium encoded with computer-readable instructions, the instructions comprising code for:

receiving a plurality of transmission frames corresponding to a segment;

detecting a first frame erasure;

a first timer responsive to detection of the first frame erasure wherein the first timer has a period;

detecting a second frame erasure prior to expiration of the first timer;

initiating a second timer upon detecting the second frame erasure;

stopping the first timer; and

determining an end of the segment based on the expiration of the first timer, the reset of the first timer, or the expiration of the second timer.

10. The non-transitory computer-readable medium of claim 9, further comprising computer-readable instructions for:

determining an identifier corresponding to a first frame associated with the first frame erasure.

11. The non-transitory computer-readable medium of claim 10, wherein determining the end of the segment comprises determining an identifier corresponding to a second frame associated with the second frame erasure.

12. The non-transitory computer-readable medium of claim 9, wherein the period is based upon an average inter-arrival time period between transmitted frames.

13. The non-transitory computer-readable medium of claim 9, wherein a length of the segment is based on a channel quality estimate.

14. A processor for wireless communication, the processor being configured to:

receive a plurality of transmission frames corresponding to a segment, each of the plurality of transmission frames having an identifier;

detect a first frame erasure within the plurality of transmission frames;

initiate a first timer upon detection of the first frame erasure, wherein the first timer has a time period;

detect a second frame erasure prior to expiration of the first timer;

initiate a second timer upon detecting the second frame erasure;

stop the first timer; and

determine an end of the segment based on the expiration of the first timer, the reset of the first timer, or the expiration of the second timer.

15. The processor of claim 14, wherein the period is based upon an average inter-arrival time period between transmitted.

16. The processor of claim 14, wherein a length of the segment is based on a channel quality estimate.

17. A wireless apparatus, comprising:

a receiver configured to receive a plurality of transmission frames corresponding to a segment, each of the plurality of transmission frames having an identifier; and

a processor configured to

detect a first frame erasure within the plurality of transmission frames,

initiate a first timer upon detection of the first frame erasure, wherein the first timer has a first time period,

detect a second frame erasure prior to expiration of the first timer,

initiate a second timer upon detecting the second frame erasure,

stop the first timer, and

determine an end of the segment based on the expiration of the first timer, the reset of the first timer, or the expiration of the second timer.

18. The processor of claim 17, wherein the period is based upon an average inter-arrival time period between transmitted.

19. The wireless apparatus of claim 17, wherein a length of the segment is based on a channel quality estimate.