Sample selection for secondary synchronization signal (SSS) detection

摘要

Methods and apparatus for selecting samples for secondary synchronization signal (SSS) detection are described. Several alternatives are provided for efficient cell identifier detection. In a first alternative, multiple bursts of a signal received from a cell are sampled with non-uniform spacing between sampling intervals to determine a sequence for cell identification. In a second alternative, samples of a first and a second signal received from a stronger cell are cancelled, and a sequence for detecting a weaker cell is determined by reducing effects of the samples of a third signal received from the weaker cell which do not overlap with the primary synchronization signal (PSS) or SSS of the stronger cell. In a third alternative, a sequence for detecting a weaker cell is determined by reducing effects of any sampled bursts that correspond to a high transmission power portion of a signal from a stronger cell.

主权项

1. A method for wireless communications, comprising:
receiving, from a stronger cell, first and second signals for determining a cell identity of the stronger cell; receiving, from a weaker cell, a third signal for determining at least a portion of a cell identity of the weaker cell, wherein at least a portion of the third signal overlaps at least one of the first signal, the second signal, or both the first signal and the second signal; sampling the first, second, and third signals; cancelling out samples of at least one of the first signal, the second signal, or both the first signal and the second signal; and determining at least one sequence of the third signal based on samples of the third signal after reducing effects, to the determination, from samples of any portion of the third signal that does not overlap at least one of the first signal, the second signal, or both the first signal and the second signal.