Concluding validity of uplink synchronization parameter
First Claim
Patent Images
1. An apparatus, comprising:
- a processor; and
a memory including computer program code,the memory and the computer program code configured to, with the processor, cause the apparatus at least toreceive downlink signaling comprising an uplink synchronization parameter;
detect the uplink synchronization parameter;
measure an interval from the detection of the uplink synchronization parameter; and
compare the measured interval with a predetermined threshold and, if the measured interval is shorter than the predetermined threshold, conclude that the detected uplink synchronization parameter is still valid, or else conclude that the detected uplink synchronization parameter is no more valid.
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Accused Products
Abstract
Concluding the validity of an uplink synchronization parameter, such as a timing advance, in a packet-switched radio system. The method includes: detecting (802) an uplink synchronization parameter; measuring (804) an interval from the detection of the uplink synchronization parameter; and comparing (806, 808) the measured interval with a predetermined threshold and, if the measured interval is shorter than the predetermined threshold, concluding (810) that the detected uplink synchronization parameter is still valid, or else concluding (812) that the detected uplink synchronization parameter is no more valid.
10 Citations
46 Claims
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1. An apparatus, comprising:
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a processor; and a memory including computer program code, the memory and the computer program code configured to, with the processor, cause the apparatus at least to receive downlink signaling comprising an uplink synchronization parameter; detect the uplink synchronization parameter; measure an interval from the detection of the uplink synchronization parameter; and compare the measured interval with a predetermined threshold and, if the measured interval is shorter than the predetermined threshold, conclude that the detected uplink synchronization parameter is still valid, or else conclude that the detected uplink synchronization parameter is no more valid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An arrangement comprising:
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means for receiving downlink signaling comprising an uplink synchronization parameter; means for detecting the uplink synchronization parameter; means for measuring an interval from the detection of the uplink synchronization parameter by the means for detecting; and means for comparing the measured interval with a predetermined threshold and, if the measured interval is shorter than the predetermined threshold, concluding that the detected uplink synchronization parameter is still valid, or else concluding that the detected uplink synchronization parameter is no more valid. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A user equipment comprising:
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a receiver configured to receive downlink signaling comprising an uplink synchronization parameter; a detector configured to detect the uplink synchronization parameter; a time measurement unit configured to measure an interval from the detection of the uplink synchronization parameter by the detector; and an evaluator configured to compare the measured interval with a predetermined threshold and, if the measured interval is shorter than the predetermined threshold, concluding that the detected uplink synchronization parameter is still valid, or else concluding that the detected uplink synchronization parameter is no more valid. - View Dependent Claims (18, 19, 20, 21, 22)
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23. A node B comprising:
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a receiver configured to receive downlink signaling comprising an uplink synchronization parameter; a detector configured to detect an uplink synchronization parameter; a time measurement unit configured to measure an interval from the detection of the uplink synchronization parameter by the detector; and an evaluator configured to compare the measured interval with a predetermined threshold and, if the measured interval is shorter than the predetermined threshold, concluding that the detected uplink synchronization parameter is still valid, or else concluding that the detected uplink synchronization parameter is no more valid. - View Dependent Claims (24, 25, 26, 27)
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28. A method comprising:
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receiving downlink signaling comprising a predetermined threshold; detecting an uplink synchronization parameter; measuring an interval from the detection of the uplink synchronization parameter; and comparing the measured interval with the predetermined threshold and, if the measured interval is shorter than the predetermined threshold, concluding that the detected uplink synchronization parameter is still valid, or else concluding that the detected uplink synchronization parameter is no more valid. - View Dependent Claims (29, 30, 31, 32, 33, 34)
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35. A computer program product embodied in a distribution medium and encoding a computer program of instructions for executing a computer process, the process comprising:
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receiving downlink signaling comprising an uplink synchronization parameter; detecting the uplink synchronization parameter; measuring an interval from the detection of the uplink synchronization parameter; and comparing the measured interval with a predetermined threshold and, if the measured interval is shorter than the predetermined threshold, concluding that the detected uplink synchronization parameter is still valid, or otherwise concluding that the detected uplink synchronization parameter is no more valid. - View Dependent Claims (36, 37, 38, 39, 40, 41)
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42. An integrated circuit comprising:
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a receiver configured to receive downlink signaling comprising an uplink synchronization parameter; a detector configured to detect the uplink synchronization parameter; a time measurement unit configured to measure an interval from the detection of the uplink synchronization parameter by the detector; and an evaluator configured to compare the measured interval with a predetermined threshold and, if the measured interval is shorter than the predetermined threshold, concluding that the detected uplink synchronization parameter is still valid, or else concluding that the detected uplink synchronization parameter is no more valid. - View Dependent Claims (43, 44, 45)
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46. A processor comprising:
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a receiver configured to receive downlink signaling comprising an uplink synchronization parameter; a detector configured to detect the uplink synchronization parameter; a time measurement unit configured to measure an interval from the detection of the uplink synchronization parameter by the detector; and an evaluator configured to compare the measured interval with a predetermined threshold and, if the measured interval is shorter than the predetermined threshold, concluding that the detected uplink synchronization parameter is still valid, or else concluding that the detected uplink synchronization parameter is no more valid.
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Specification