SPECIFIC VELOCITY ESTIMATION OF WIRELESS NETWORK DEVICES
First Claim
1. A method of determining the velocity of a device in a wireless network, the method comprising:
- receiving a handover count (H) of base station boundary transitions made by the device over a predefined time window (T);
determining a specific velocity estimate for the device using H, T, and a base station density (λ
) as inputs to a velocity estimator; and
returning the specific velocity estimate.
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Abstract
Techniques are disclosed for determining a specific velocity of a device attached to a wireless network. The specific velocity can be determined using a handover count of the base station boundary transitions over a time window and/or using a set of sojourn time samples that each denote the duration the device remains in the zone of a particular base station. Techniques operate effectively in cellular networks having high base station densities. The specific velocity estimates may be inputs to components on the device or network to adjust a local device function or performance behavior.
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Citations
14 Claims
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1. A method of determining the velocity of a device in a wireless network, the method comprising:
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receiving a handover count (H) of base station boundary transitions made by the device over a predefined time window (T); determining a specific velocity estimate for the device using H, T, and a base station density (λ
) as inputs to a velocity estimator; andreturning the specific velocity estimate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of determining the velocity of a device in a wireless network, the method comprising:
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receiving a vector T of N sojourn time samples, wherein each sojourn time sample denotes the duration the user device remains in a zone of a particular base station; determining a specific velocity estimate for the user device using the vector T and a base station density (λ
) as inputs to a velocity estimator; andreturning the specific velocity estimate. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification