Apparatuses, methods, and systems of assigning codes are disclosed. One method includes selecting a plurality of available codes, grouping links of a wireless network into a plurality of groups based on connectivity of the links between sectors of the wireless network, characterizing interference between at least one link of a first group of the plurality of groups and at least one link of a second group of the plurality of groups, and assigning at least one code of the plurality of available codes to the first group and at least one other code of the plurality of available codes to the second group based on the characterizing of the interference.

Apparatuses, methods, and systems of mitigating packet interference are disclosed. One method includes receiving, by a sector, data to be transmitted over a specific wireless link of a wireless network, configuring a packet for transmission over the specific wireless link, wherein the packet includes a preamble, and the data, and transmitting, by the sector, the configured packet over the specific wireless link. Configuring the packet includes identifying a reference sequence based on the specific wireless link, and inserting the reference sequence into at least a portion of the preamble.

There is disclosed a method of operating a wireless device in a wireless communication network. The method includes communicating based on received synchronisation signalling, the synchronisation signalling covering a signalling time interval having a number N1 of symbol time intervals or symbols, wherein N1 is larger than 1; the synchronisation signalling including, on NP1 symbol time interval or symbols, primary synchronisation signalling, PSS; the synchronisation signalling also including, on NS1 symbol time intervals or symbols, secondary synchronisation signalling, SSS, wherein NP1 is 2 or larger and/or wherein NS1 is 2 or larger. The disclosure also pertains to related devices and methods.

Disclosed is an apparatus, computer implemented method and method for preforming channel estimation in a millimeter wave wireless communication system which includes receiving complementary sequences at a receiver of the millimeter wave wireless communication system; estimating a channel estimation of a channel among the received complementary sequences; estimating a signal-to-noise ratio (SNR) estimation of the channel; detecting a maximum channel response value of the channel estimation; computing a de-noised threshold value from the maximum channel response value and the SNR estimation of the channel; comparing the de-noised threshold value to the channel estimation to detect a last valid tap of a channel impulse response; and zeroing out all the taps after the detected last valid tap of the channel impulse response.

Various embodiments are generally directed to an apparatus, method and other techniques to perform beamforming training in a MIMO environment. Some embodiments may include communicating one or more beamforming refinement packets having training subfields with orthogonal structures such that devices may simultaneously perform beamforming training for each pair of phased array antennas. Embodiments may also include the beamforming refinement packets with channel estimation fields with orthogonal structures.

This application discloses a signal processing method and an apparatus. The method includes: A transmit device generates a PPDU, and sends the PPDU; and a receive device receives the PPDU, and processes M sequences carried in the PPDU. The PPDU shown in this application includes a first field, the first field is used for carrying M sequences, the M sequences correspond to M space-time streams, one sequence corresponds to one space-time stream, and M is a positive integer. According to the method provided in this application, sequence sending efficiency can be effectively improved.

A base station may generate a low-power (LP) wake-up signal (LP-WUS) that includes on-off keying (OOK) symbols with complementary sequences overlaying at least one of the OOK symbols. The complementary sequences may include an indication of a user equipment (UE) to transition from a power saving mode to an active mode. The base station may communicate the LP-WUS to the UE, which may cause the UE to transition from the power saving mode to an active mode. The complementary sequence may include, or be generated creating, one or more Golay complementary sequences. These and many other features and examples are described herein.

Various aspects of the present disclosure relate to transmitting a first random access configuration comprising code domain information and receiving a first set of random access transmissions from a set of internet-of-things (IoT) devices, each random access transmission of the first set of random access transmissions multiplexed according to the code domain information. Aspects of the present disclosure may relate to transmitting a second random access configuration to a subset of IoT devices of the set of IoT devices based at least in part on a collision between a subset of random access transmissions of the first set of random access transmissions, where the subset of random access transmissions is associated with the subset of IoT devices, and receiving a second set of random access transmissions based on the second random access configuration.

A sequence transmission method and an apparatus are provided, which may be applied to a downlink synchronization scenario, a random access scenario, a sensing scenario, a radar scenario, an integrated sensing and communication scenario, or the like, to increase sequence design diversity, and improve sequence design flexibility and target detection accuracy. The method includes: A transmit end apparatus determines N first sequences, and sends the N first sequences. An n.sup.th first sequence in the N first sequences is determined based on an n.sup.th second sequence in N second sequences, formula (I), a.sub.m is a prime number, M is a positive integer greater than 1, and n=0,1, . . . , N1. Each second sequence is a sequence in a Golay complementary pair GCP. The N second sequences include formula (II) first sub-sequence sets, each first sub-sequence set includes a.sub.m second sub-sequence sets, each second sub-sequence set includes formula (III) second sequences, m=0,1, . . . , M1, and a.sub.1=1.

A sending-end apparatus determines N.sub.1 first sequences, where an n.sup.th first sequence is determined based on an n.sup.th first base sequence, n=0, 1, . . . , N.sub.11, and each first base sequence is a sequence in a GCP. The sending-end apparatus sequentially sends the N.sub.1 first sequences, where an equal time interval exists between time domain positions of any two adjacent first sequences, and N.sub.1 first base sequences are related to a prime factor of N.sub.1, or N.sub.1 first base sequences are predefined sequences.