Method and an apparatus for reduction of QOS impairments in multi-media services during hand-over
First Claim
1. A method for providing a communication link for a user located in a first coverage area, the method comprising:
- predicting a future position based on a history of the user'"'"'s positions;
determining whether the future position is in a second coverage area;
negotiating link quality with a station of the second coverage area if the future position is in the second coverage area; and
reducing a call impairment rate by increasing an accuracy of the prediction, wherein the increased accuracy extends a time for negotiating link quality.
2 Assignments
0 Petitions
Accused Products
Abstract
A cellular communication system with enhanced Quality-of-Service (QoS) during the hand-off process is disclosed. The system includes a plurality of cells, each including a corresponding base station. Based on the history of a mobile user'"'"'s positions, the base station of the cell in which the user is located predicts the user'"'"'s future position. If the future position is in an area covered by another base station (i.e., the target base station), the base station initiates QoS negotiations with the target base station. The target base station allocates resources according to the negotiated QoS if the mobile user enters the area covered by the target base station as predicted.
9 Citations
33 Claims
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1. A method for providing a communication link for a user located in a first coverage area, the method comprising:
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predicting a future position based on a history of the user'"'"'s positions; determining whether the future position is in a second coverage area; negotiating link quality with a station of the second coverage area if the future position is in the second coverage area; and reducing a call impairment rate by increasing an accuracy of the prediction, wherein the increased accuracy extends a time for negotiating link quality. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A system comprising:
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a plurality of cells; a plurality of base stations, wherein each of the plurality of base stations is located within and corresponding to each of the plurality of cells; a position recorder in each of the base stations to record a mobile unit'"'"'s positions within the corresponding cell; and a predictor coupled to each of the position recorders to receive the recorded positions and predict a future position based thereon, wherein the predictor is configured to use a predetermined look-ahead time for the predicted future position to lead a mobile unit'"'"'s current position, and wherein the predictor is further configured to reduce a call impairment rate by extending a hand-oft deadline (H deadline). - View Dependent Claims (21, 22, 23, 24, 25, 26)
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27. A method comprising:
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predicting a user'"'"'s future position based on a history of the user'"'"'s positions; communicating between a station that covers a user'"'"'s current position and a station that covers the user'"'"'s future position; reserving resources at the station that covers the user'"'"'s future position; and reducing a call impairment rate by using the prediction of the user'"'"'s future position, wherein the call impairment rate comprises a measure of dropped calls and call glitches that occur in the communicating and reserving, wherein the call impairment rate comprises a plurality of prediction parameters, and wherein the call impairment rate is reduced by extending a hand-off deadline (H deadline). - View Dependent Claims (28, 29, 30)
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31. A machine-accessible medium with executable instructions stored thereon that, when accessed, perform the following operations:
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predict a user'"'"'s future position based on a history of the user'"'"'s positions; communicate between a station that covers a user'"'"'s current position and a station that covers the user'"'"'s future position, reserve resources at the station that covers the user'"'"'s future position; and reduce a call impairment rate by using the prediction of the user'"'"'s future position, wherein the call impairment rate comprises a measure of dropped calls and call glitches that occur in the communicating and reserving, wherein the call impairment rate comprises a plurality of prediction parameters, and wherein the call impairment rate is reduced by extending the hand-off deadline (H deadline). - View Dependent Claims (32, 33)
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Specification