Device and method for determining the deviation of the carrier frequency of a mobile radio device from the carrier frequency of a base station
First Claim
1. A device for determining the discrepancy between the carrier frequency of a mobile radio and the carrier frequency of at least one base station, with a sequence of complex pilot symbols which is known in the mobile radio being transmitted by radio from each base station to the mobile radio, comprising:
- a first unit configured to calculate terms, with one term being formed from at least two different pilot symbols in the sequence received by the mobile radio, and in which case the phase difference between the two pilot symbols can be determined from the one term;
a second unit configured to form groups from the terms, with at least one term being assigned to one group on the basis of features of the pilot symbols on which the at least one term is based; and
a third unit configured to calculate the frequency discrepancy on the basis of the terms in at least one group.
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Accused Products
Abstract
A device for determination of the frequency discrepancy (105) between a mobile radio and a base station which is transmitting a sequence of symbols, having a unit (6-11) for calculation of terms, with one term being formed from two symbols in the sequence received by the mobile radio, and in which case the phase difference of the two symbols can be determined from the term, a unit (14, 15) for formation of groups from the terms, with one term being assigned to one group on the basis of features of the symbols on which it is based, and a unit (39) for calculation of the discrepancy (105) on the basis of a group.
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Citations
22 Claims
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1. A device for determining the discrepancy between the carrier frequency of a mobile radio and the carrier frequency of at least one base station, with a sequence of complex pilot symbols which is known in the mobile radio being transmitted by radio from each base station to the mobile radio, comprising:
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a first unit configured to calculate terms, with one term being formed from at least two different pilot symbols in the sequence received by the mobile radio, and in which case the phase difference between the two pilot symbols can be determined from the one term; a second unit configured to form groups from the terms, with at least one term being assigned to one group on the basis of features of the pilot symbols on which the at least one term is based; and a third unit configured to calculate the frequency discrepancy on the basis of the terms in at least one group. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for determination of the discrepancy between the carrier frequency of a mobile radio and the carrier frequency of at least one base station, with a sequence of complex pilot symbols which is known in the mobile radio being transmitted by radio from each base station to the mobile radio, comprising:
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(a) calculating terms, with one term being formed from at least two different pilot symbols in the sequence received by the mobile radio, and in which case the phase difference between the at least two pilot symbols can be determined from the one term; (b) forming of groups from the terms, with at least one term being assigned to one group on the basis of features of the pilot symbols on which the at least one term is based; and (c) calculating the frequency discrepancy on the basis of the terms in at least one group. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification