Method of dynamically controlling the length of a R.sub.-- DATA messages on a random access channel

• US 5,991,633 A
• Filed: 04/07/1997
• Issued: 11/23/1999
• Est. Priority Date: 02/07/1997
• Status: Expired due to Term

• Current Assignee: Unwired Planet LLC (JP Morgan Chase & Co)
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Corriveau, Michel, Turcotte, Eric
• Primary Examiner(s): Bost, Dwayne D.
• Assistant Examiner(s): GELIN, JEAN ALLAND
• Application Number:
  US08/838,432
• Time in Patent Office: 960 Days
• Field of Search: 455/466, 455/509, 455/515, 455/516, 455/517, 455/453, 370/465, 370/468, 370/470, 370/471, 370/472, 370/230, 370/232, 370/234, 370/241, 370/349
• US Class Current: 455/466
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 4/90 Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
• CPC Class Codes: H04W 74/0866 using a dedicated channel for access
• CPC Class Codes: H04W 76/50 for emergency connections

Abstract

A method for dynamically controlling the length of an R_-- DATA message on a random access channel is disclosed. Initially, a set of threshold values for traffic load levels are established with respect to the usage of a random access (RACH) channel. A particular R_-- DATA message length is then associated with each of these threshold values. The RACH channel is monitored to track the traffic load on the RACH, and once one of the established threshold levels are reached, the R_-- DATA message length is set to the value associated with that threshold level. R_-- DATA messages are then transmitted according to the new length.

Claims

1. A method for dynamically controlling a length of all messages transmitted on a channel of a mobile radio air interface, comprising the steps of:

associating a predetermined threshold value for a traffic load on the air interface with a selected length of the messages;

monitoring the traffic load over the channel of the air interface;

setting a length of the messages equal to the selected length when the traffic load meets the threshold value; and

transmitting all the messages on the channel at the selected length.

2. The method of claim 1 wherein the step of associating further comprises associating a predetermined threshold value for the traffic load with a selected value for a R_-- DATA LENGTH parameter.

3. The method of claim 1 wherein the step of associating further comprises the steps of:

associating a first predetermined threshold value for increasing traffic load with a first selected length of the messages; and

associating a second predetermined threshold value for decreasing traffic load with a second selected length of the messages.

4. The method of claim 3 wherein the first and the second preselected threshold values are separated by a predetermined value.

5. The method of claim 1 wherein the step of monitoring further comprises the step of monitoring the traffic load on a random access channel.

6. The method of claim 1 wherein the messages comprise an R_-- DATA messages.

7. The step of claim 1 wherein the step of monitoring further comprises:

determining if the traffic load is increasing or decreasing;

monitoring a first set of threshold values if the traffic load is increasing; and

monitoring a second set of threshold values if the traffic load is decreasing.

8. A method for dynamically controlling a length of R_-- DATA messages on a random access channel, comprising the steps of:

associating a plurality of predetermined threshold values for a traffic load with a corresponding plurality of selected values for a R_-- DATA LENGTH parameter;

monitoring a traffic load on the random access channel to determine a presently met threshold value;

setting the R_-- DATA LENGTH parameter equal to a selected value for the R_-- DATA LENGTH parameter corresponding to the presently met predetermined threshold level; and

transmitting the R_-- DATA messages on the random access channel according to the set R_-- DATA LENGTH parameter.

9. The method of claim 8 wherein the step of associating further comprises the steps of:

associating a first predetermined threshold value for increasing traffic load with a first selected value for the R_-- DATA LENGTH parameter; and

associating a second predetermined threshold value for decreasing traffic load with a second selected value for the R_-- DATA LENGTH parameter.

10. The method of claim 9 wherein the first and the second preselected threshold values are separated by a predetermined value.

11. The method of claim 8 wherein the step of monitoring further comprises:

determining if the traffic load is increasing or decreasing;

monitoring a first set of threshold values if the traffic load is increasing; and

monitoring a second set of threshold values if the traffic load is decreasing.

12. The method of claim 8 wherein the step of establishing further comprises the steps of:

establishing a first set of threshold values for increasing traffic load; and

establishing a second set of threshold values for decreasing traffic loads.

13. A method for dynamically controlling a length of an R_-- DATA message on a random access channel:

associating a first set of threshold values for increasing traffic loads with a first set of selected values for a R_-- DATA LENGTH parameter;

associating a second set of threshold values for decreasing traffic loads with a second set of selected values for a R_-- DATA length parameter;

determining if the traffic load is increasing or decreasing;

monitoring the traffic load on the RACH for the first set of threshold values if the traffic load is increasing;

monitoring the traffic load on the random access channel (RACH) for the second set of threshold values if the traffic load is decreasing;

setting a R_-- DATA LENGTH parameter equal to the associated selected value for the R_-- DATA LENGTH parameter when the traffic load corresponds to one of the first and second threshold levels; and

transmitting R_-- DATA messages on the random access channel according to the set value for the R_-- DATA LENGTH parameter.

14. The method of claim 13 wherein the first and the second preselected threshold values are separated by a predetermined value.