Dynamic predictive resource reservation in wireless networks

• US 20020107026A1
• Filed: 12/15/2000
• Published: 08/08/2002
• Est. Priority Date: 12/15/2000
• Status: Abandoned Application

• Current Assignee: Telcordia Technologies Incorporated (Telefonaktiebolaget LM Ericsson), Toshiba Corporation
• Original Assignee: Telcordia Technologies Incorporated (Telefonaktiebolaget LM Ericsson), Toshiba Corporation
• Inventors: Chennikara, Jasmine, Zhang, Tao, Agrawal, Prathima, Kodama, Toshikazu
• Application Number:
  US09/737,400
• Publication Number:
  US 20020107026A1
• Time in Patent Office: Days
• US Class Current: 455/453
• CPC Class Codes: H04L 47/11 Identifying congestion
• CPC Class Codes: H04L 47/12 Avoiding congestion; Recovering from congestion
• CPC Class Codes: H04L 47/15 in relation to multipoint traffic arrangements for broadcast or multicast in data networks H04L12/18
• CPC Class Codes: H04L 47/70 Admission control; Resource allocation
• CPC Class Codes: H04L 47/724 at intermediate nodes, e.g. resource reservation protocol [RSVP]
• CPC Class Codes: H04L 47/767 after changing the attachment point, e.g. after hand-off
• CPC Class Codes: H04L 47/801 Real time traffic
• CPC Class Codes: H04L 47/822 Collecting or measuring resource availability data
• CPC Class Codes: H04L 47/823 Prediction of resource usage
• CPC Class Codes: H04L 47/824 Applicable to portable or mobile terminals
• CPC Class Codes: H04L 47/83 based on usage prediction
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 28/26 Resource reservation
• CPC Class Codes: H04W 8/04 Registration at HLR or HSS [Home Subscriber Server]
• CPC Class Codes: H04W 80/00 Wireless network protocols or protocol adaptations to wireless operation

Abstract

A method for reserving resources in a wireless network. The method is implemented in a base station by moving the function of predicting and reserving resources from the radio dependent layer to a radio independent layer. In accordance with our method resources currently being used and being demanded are monitored. The monitored data is then used by a reservation handler to predict future resource demand. The future resource demand is then estimated by the reservation handler for both radio dependent and radio independent layers. In estimating future resources we use a Wiener process model and incorporate instantaneous changes in the resource usage and demand so that call fluctuations are accounted for.

Claims

1. A method for reserving resources in a wireless network, said method comprising the steps of:

monitoring a resource to obtain a resource value;

estimating resources needed for radio dependent and radio independent layers based on said monitored resource value; and

reserving said needed resources at the radio dependent and radio independent layers based on said estimate.

2. The method of claim 1 wherein said monitoring step further includes the step of monitoring call arrivals, resource requirement, and resource usage.

3. The method of claim 2 further comprising the step of updating the rate at which said estimating is done if the difference in resource usage is greater than or equal to a pre-determined value.

4. The method in accordance with claim 3 wherein said step of estimating further includes the step of modeling the resources needed as a Wiener process.

5. The method in accordance with claim 3 said calls are handoff calls.

6. The method in accordance with claim 3 wherein said calls are new calls originating within a cell.

7. The method in accordance with claim 3 wherein said calls are handoff calls and new calls originating within a cell.

8. A method for reserving resources in a mobile wireless internet protocol network, said method comprising the steps at a base station of:

monitoring call arrivals and resource requirements;

responsive to said monitoring, estimating the radio dependent and radio independent resources required; and

instructing radio independent and radio dependent layers to reserve the estimated resources for future calls.

9. The method in accordance with claim 8 wherein said estimating step resides at a radio-independent layer of the internet protocol.

10. The method in accordance with claim 8 further comprising increasing the rate of said monitoring step if the difference in resource usage is greater than or equal to a threshold value.

11. The method in accordance with claim 10 wherein said estimating step comprises Wiener process-based stochastic models.

12. The method in accordance with claim 11 wherein said estimating step resides at a radio-independent layer of the internet protocol.

13. The method of claim 12 wherein said calls are handoff calls.

14. The method in accordance with claim 12 wherein said calls are new calls originating within a cell.

15. The method in accordance with claim 12 wherein said calls are handoff calls and new calls originating within a cell.

16. The method in accordance with claim 8 wherein said step of monitoring monitors instantaneous values of handoff call arrivals and resource requirements.

17. The method in accordance with claim 8 wherein said instructing step causes reservation of both radio resources and internet protocol layer resources.

18. The method in accordance with claim 17 wherein said estimating step is based on a stochastic model.