Method of handover in a cellular system
First Claim
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1. A method for handover in a cellular system comprising the steps of:
- (a) periodically scanning at a neighboring cell, traffic channels of a serving cell to determine for each traffic channel a channel metric;
(b) for each channel metric exceeding a threshold, validating the serving cell identity;
(c) periodically transferring from the neighboring cell to the serving cell channel metrics which exceed the threshold for each traffic channel; and
(d) selecting a new serving cell based on the transferred channel metrics.
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Abstract
A method for handover in a cellular system is provided which includes periodically scanning from neighboring cells, traffic channels of a serving cell to determine channel metrics. If the channel metrics exceed a threshold, validating the serving cell identity by verifying traffic channel color code. The channel metrics are then periodically transferred to the serving cell where a handover decision is made.
28 Citations
16 Claims
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1. A method for handover in a cellular system comprising the steps of:
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(a) periodically scanning at a neighboring cell, traffic channels of a serving cell to determine for each traffic channel a channel metric; (b) for each channel metric exceeding a threshold, validating the serving cell identity; (c) periodically transferring from the neighboring cell to the serving cell channel metrics which exceed the threshold for each traffic channel; and (d) selecting a new serving cell based on the transferred channel metrics. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for handover in a cellular system comprising the steps of:
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(a) periodically scanning at a plurality of neighboring cells, traffic channels of a serving cell to, for each traffic channel, determine a channel metric; (b) for each channel metric exceeding a threshold, validating the serving cell identity; (c) periodically transferring from the neighboring cell to the serving cell, the channel metrics which exceed the threshold; and (d) selecting a new serving cell based on the transferred channel metrics. - View Dependent Claims (13, 14, 15)
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16. A method for handover in a cellular system comprising the steps of:
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(a) periodically scanning at a plurality of neighboring cells, traffic channels of a serving cell to, for each traffic channel, determine a channel metric; (b) for each channel metric, determining if the channel metric exceeds at least one threshold; (c) validating serving cell identity when the channel metric exceeds the at least one threshold; (d) determining if the channel metric varies by more than a predetermined amount from a previously sent channel metric; (e) periodically transferring from the neighboring cell to the serving cell the channel metrics which exceed the at least one threshold for each traffic channel; (f) determining an active traffic channel of the serving cell; (g) performing a power budget evaluation; and (h) selecting a new serving cell based on the channel metrics.
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Specification