USER EQUIPMENT FOR SYNCHRONIZING TO A TDD BASE STATION
First Claim
1. A time division duplex (TDD) user equipment (UE) configured to synchronize to a TDD base station, the UE comprising:
- an antenna configured to receive a signal from the TDD base station;
a primary synchronization code matched filter configured to determine a primary synchronization code from the received signal;
a first plurality of secondary synchronization code matched filters configured to determine a first plurality of secondary synchronization codes sent on a first carrier from the received signal, wherein the first plurality of secondary synchronization codes are quadrature phased shift keyed (QPSK) modulated and the first carrier is an in-phase (I) carrier;
a second plurality of secondary synchronization code matched filters configured to determine a second plurality of secondary synchronization codes sent on a second carrier from the received signal, wherein the second plurality of secondary synchronization codes are QPSK modulated and the second carrier is a quadrature (Q) carrier; and
a processor in communication with the primary synchronization code matched filter and plurality of secondary synchronization code matched filters, the processor configured to determine a code group assignment and selected timeslot based upon an analysis of the secondary synchronization codes sent on the first and second carriers.
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Accused Products
Abstract
A time division duplex (TDD) user equipment (UE) is configured to synchronize to a TDD base station. The UE includes an antenna, a primary synchronization code matched filter, a first plurality of secondary synchronization code matched filters, a second plurality of secondary synchronization code matched filters, and a processor in communication with the first and second plurality of secondary synchronization code matched filters. The first plurality of secondary synchronization code matched filters determines secondary synchronization codes sent on a first carrier and the second plurality of secondary synchronization code matched filters determines secondary synchronization codes sent on a second carrier. The processor is configured to determine a code group assignment and selected timeslot based upon an analysis of the secondary synchronization codes sent on the first and second carriers.
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Citations
5 Claims
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1. A time division duplex (TDD) user equipment (UE) configured to synchronize to a TDD base station, the UE comprising:
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an antenna configured to receive a signal from the TDD base station; a primary synchronization code matched filter configured to determine a primary synchronization code from the received signal; a first plurality of secondary synchronization code matched filters configured to determine a first plurality of secondary synchronization codes sent on a first carrier from the received signal, wherein the first plurality of secondary synchronization codes are quadrature phased shift keyed (QPSK) modulated and the first carrier is an in-phase (I) carrier; a second plurality of secondary synchronization code matched filters configured to determine a second plurality of secondary synchronization codes sent on a second carrier from the received signal, wherein the second plurality of secondary synchronization codes are QPSK modulated and the second carrier is a quadrature (Q) carrier; and a processor in communication with the primary synchronization code matched filter and plurality of secondary synchronization code matched filters, the processor configured to determine a code group assignment and selected timeslot based upon an analysis of the secondary synchronization codes sent on the first and second carriers. - View Dependent Claims (2, 3, 4, 5)
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Specification