The present disclosure relates to methods, systems and devices for use in a wireless terminal includes transmitting, to a wireless network node, a preamble comprising a plurality of parts, wherein each of the plurality of parts comprises at least one sub-preamble and the sub-preambles in the plurality of parts are generated based on a plurality of roots.

In the multiple short sequence based SRS, multiple items of sequence data having a short sequence length corresponding to a partial band are used for transmitting SRS in discontinuous bands. In the multiple short sequence based SRS, a terminal specifies a frequency domain to be used for transmitting a reference signal using predetermined sequence data, applies a phase shift index associated with the specified frequency domain to the reference signal, and transmits the reference signal to which the phase shift index is applied by using the specified frequency domain.

Provided is a data processing method and apparatus, a first communication node, a second communication node and a storage medium. The data processing method includes: N first sequences are acquired; a second sequence is determined according to at least one first sequence of the N first sequences; a processing is performed on data based on the second sequence to obtain data symbols; and the N first sequences and the data symbols are sent; where N is an integer greater than or equal to 2.

An apparatus comprising: at least one processor; and at least one memory including computer program code; the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to: generate (606) a synchronization signal for transmission over one or more symbols, wherein the number of symbols is dependent on a subcarrier spacing.

In the multiple short sequence based SRS, multiple items of sequence data having a short sequence length corresponding to a partial band are used for transmitting SRS in discontinuous bands. In the multiple short sequence based SRS, a terminal specifies a frequency domain to be used for transmitting a reference signal using predetermined sequence data, applies a phase shift index associated with the specified frequency domain to the reference signal, and transmits the reference signal to which the phase shift index is applied by using the specified frequency domain.

A first endpoint generates an acoustic spread spectrum signal including a pilot sequence and a data sequence representing a token synchronized to the pilot sequence, transmits the acoustic spread spectrum signal, and records a transmit time at which the acoustic spread spectrum signal is transmitted. A receive time at which a second endpoint received the acoustic spread spectrum signal transmitted by the first endpoint is received from the second endpoint along with an indication of a second token as recovered from the received acoustic spread spectrum signal by the second endpoint. A separation distance between the first endpoint and the second endpoint is computed based on a time difference between the transmit time and the receive time. The first endpoint is paired with the second endpoint when the token matches the second token and the computed distance is less than a threshold distance.

A data receiver is configured to receive a signal including a plurality of partial data packets, wherein the plurality of partial data packets each include part of a data packet, wherein the data receiver includes a multi-stage correlator that is configured to perform multi-stage correlation to detect the partial data packets in the received signal, wherein a second correlation stage of the multi-stage correlator operates based on correlation results of a first correlation stage of the multi-stage correlator.

Methods, systems, and devices for a wakeup receiver operation is described. The apparatus may include a splitter that splits a received signal into a first component signal and a second component signal. The signal may include a code sequence, where each symbol of a plurality of symbols of the code sequences includes one of a set of sub-sequences. The apparatus may delay the first component signal and multiply the first component signal with the delayed first component signal and delay the second component signal and multiply the second component signal with the delayed second component signal to generate a first and second output. The apparatus may also determine a representation of the code sequence based on a sequence of levels of the first output and the second output over the plurality of symbols.

It is possible to solve the problem that a downstream control information amount is significantly increased if allocation information is periodically reported because no allocation method of a default E-DCH resource configuration is defined for a preamble signature. A base station and a mobile station decide a default resource configuration by using a total number of resource configurations or a value obtained from the total number.

An extensible communication system is described herein. The system includes a first module for receiving a root index value and for generating a constant amplitude zero auto-correlation sequence based on the root value. The system further includes a second module for receiving a seed value and for generating a Pseudo-Noise sequence based on the seed value. The system further includes a third module for modulating the constant amplitude zero auto-correlation sequence by the Pseudo-Noise sequence and for generating a complex sequence. The system further includes a fourth module for translating the complex sequence to a time domain sequence, wherein the fourth module applies a cyclic shift to the time domain sequence to obtain a shifted time domain sequence.