Signaling of Sequence Generator Initialization Parameters for Uplink Reference Signal Generation

摘要

A base station initializes pseudo-random sequence generators on which wireless devices base generation of uplink reference signals. The base station determines a first sequence from a first subset of possible initialization sequences for a sequence generator of a first device, and determines a second sequence from a second subset of possible initialization sequences for a sequence generator of a second device. The range of this second subset spans at least the range of the first subset. The base station further encodes the first sequence as a first set of two or more parameters, and encodes the second sequence as a second set of one or more parameters. This second set includes at least one parameter not included in the first set, and comprises fewer bits than the first set. The base station initializes the sequence generators by transmitting the first and second sets of parameters to the devices.

主权项

1. A method implemented by a wireless device for initializing a pseudo-random sequence generator on which to base generation of an uplink reference signal, comprising:
selectively deriving one of the initialization sequences within a subset of possible initialization sequences for the sequence generator, according to one or more rules that define different initialization sequences in the subset as a function of a single parameter, wherein the single parameter is received from a base station and the derived initialization sequence is a device-specific sequence; generating the uplink reference signal with the sequence generator initialized to the derived initialization sequence; and transmitting the generated signal.