A method of transmitting, by a first user equipment (UE), a sidelink synchronization signal to a second UE in a wireless communication system ay include determining values of N.sub.ID.sup.(1) and N.sub.ID.sup.(2) corresponding to a sidelink identifier (SLID) value based on a number of types of a physical layer sidelink synchronization identity set and a number of sequences included in each type of the physical layer sidelink synchronization identity set; generating a sidelink primary synchronization signal (PSS) sequence and a sidelink secondary synchronization signal (SSS) sequence based on a first primitive polynomial, a second primitive polynomial, and a cyclic shift (CS) value; and mapping, on physical resources, and thereby transmitting the sidelink PSS sequence and the sidelink SSS sequence.

The disclosure relates to a method, performed by a user equipment (UE), of transmitting or receiving signals in a wireless communication system, and in an embodiment, the UE transmits, to a base station (BS), UE capability information regarding sequence initialization of a demodulation reference signal (DMRS), receives, from the BS, DMRS configuration information determined based on the UE capability information, and receives the DMRS from the BS based on the DMRS configuration information, wherein the DMRS is generated based on a sequence initialization parameter determined based on a code division multiplexing (CDM) group identifier included in the DMRS configuration information.

There is disclosed a method of operating a wireless device in a wireless communication network. The method includes communicating based on reference signaling, the reference signaling being based on a sequence root, the sequence root being one out of a set of sequence roots comprising at least two sequence roots, the set of sequence roots being configured to the wireless device. The disclosure also pertains to related devices and methods.

First information is sent using a multicast resource to a communication apparatus group that includes at least two communication apparatuses. Feedback information is detected, on a shared unified time-frequency resource, from at least one communication apparatus in the communication apparatus group, where the feedback information indicates that there is at least one communication apparatus in the group that fails to correctly receive the first information, where the time-frequency resource is a feedback resource used by all communication apparatus in the communication apparatus group to send feedback information.

This disclosure relates to techniques for synchronization signals. The synchronization signal comprise a primary synchronization signal (PSS) generated based on a PSS sequence and a secondary synchronization signal (SSS) generated based on an SSS sequence. The SSS sequence may be generated based on a first sequence corresponding to a first cyclic shift and a second sequence corresponding to a second cyclic shift. The first cyclic shift and the second cyclic shift are associated with Cell ID. The PSS sequence may be generated based on one of the first and the second sequences.

Embodiments of the present disclosure provide a method and an apparatus for detecting a characteristic sequence in a wireless communication system. The method includes: receiving, by a receiving end base station, an original characteristic sequence periodically transmitted by a transmitting end base station; detecting out, by the receiving end base station, a candidate characteristic sequence meeting a preset condition from the original characteristic sequence; determining whether the candidate characteristic sequence is a valid characteristic sequence; and detecting whether there is an associated event based on a preset rule according to the detected valid characteristic sequence. In this way, it is solved the problem that it cannot be guaranteed that the number of characteristic sequences falsely detected is reduced without increasing the missed-detection probability in a scenario of larger number of detections in the prior art.

A pre-5.sup.th generation (5G) or 5G communication system supports higher data rates beyond 4.sup.th-generation (4G) communication system such as long term evolution (LTE) is provided. A method for operating a first device in a wireless communication system includes generating a first bit sequence, generating a second bit sequence including at least one of the first bit sequence, at least one cyclic redundancy check (CRC) bit, at least one frozen bit, or at least one parity check (PC) bit, generating a transmission bit sequence by performing a polar encoding and a rate matching for the second bit sequence, and transmitting, to a second device, the transmission bit sequence. A length of the transmission bit sequence is equal to or greater than a sum of a length of the first bit sequence, a number of the at least one CRC bit and a number of the at least one PC bit.

This disclosure relates to techniques for synchronization signals. The synchronization signal comprise a primary synchronization signal (PSS) generated based on a PSS sequence and a secondary synchronization signal (SSS) generated based on an SSS sequence. The SSS sequence may be generated based on a first sequence corresponding to a first cyclic shift and a second sequence corresponding to a second cyclic shift. The first cyclic shift and the second cyclic shift are associated with Cell ID. The Cell ID can be determined from the first cyclic shift and the second cyclic shift.

Technology for a Next Generation NodeB (gNB) operable to encode a primary synchronization signal for transmission to a user equipment (UE) is disclosed. The gNB can identify a sequence d(n) for a primary synchronization signal. The sequence d(n) can be defined by: d(n)=1?2s(n), where s(n) is a maximum run length sequence (m-sequence) and s(n) is provided as s(n+7)=(s(n+4)+s(n))mod 2, where 0?n?127. The gNB can generate the primary synchronization signal based on the sequence d(n). The gNB can encode the primary synchronization signal for transmission to the UE.

This disclosure relates to techniques for synchronization signals. The synchronization signal comprises a primary synchronization signal (PSS) generated based on a PSS sequence and a secondary synchronization signal (SSS) generated based on an SSS sequence. The SSS sequence may be generated based on a first sequence corresponding to a first cyclic shift and a second sequence corresponding to a second cyclic shift. The first cyclic shift and the second cyclic shift are associated with a Cell ID. The PSS sequence may be generated based on one of the first and the second sequences.