A training packet sending method and apparatus, where the method includes generating, by a first device, a training packet, where the training packet includes a preamble, a header, and a training field, and the header includes at least a legacy header, and repeatedly sending, by the first device, the preamble using N channels, sending the legacy header in the header using the N channels, and sending the training field to at least one second device using H channels of the N channels, where N is greater than 1, and H is greater than 1 and less than or equal to N.

An uplink information transmission method, as well as a user terminal and a computer-readable storage medium are provided, the method includes: receiving network configuration information, wherein the network configuration information comprises identification information for indicating a target transmission reception point; generating uplink information corresponding to the identification information of the target transmission reception point based on the identification information of the target transmission reception point; and transmitting the uplink information.

Disclosed herein are devices, systems and methods between a between a plurality of collaborating Access Points (APs) and a receiving station (STA) operating in a wireless local area network (WLAN). The method include the steps of: transmitting, by each AP in the plurality of collaborating APs, a data frame to the receiving STA, each data frame has a preamble portion, the preamble portion including a signal (SIG) field, and the SIG field has a subfield including information representative of a total number of spatial streams transmitted by the plurality of collaborating Aps.

A terminal and a base station in a wireless communication system and a method performed by the terminal and the base station are disclosed. According to an embodiment, the method performed by the terminal in the wireless communication system comprises: receiving a physical downlink control channel (PDCCH), the PDCCH including downlink control information (DCI) for scheduling one or more physical downlink shared channels (PDSCHs); receiving the PDSCHs according to the DCI; and transmitting a hybrid automatic repeat request acknowledgement (HARQ-ACK/NACK) codebook for the PDSCHs.

Wireless communication techniques that utilize a general purpose (GP) reference signal for non-coherent millimeter-wave communication are discussed. The GP reference signal may have a special structure allowing it to be flexibly used by a mobile device for multiple purposes. A base station may determine a repetition factor for a repetitive intra-symbol GP reference signal mapping based on an event that triggered transmission of the GP reference signal. The base station may also map the GP reference signal to resource elements of a symbol based, at least in part, on the determined repetition factor of the repetitive intra-symbol GP reference signal mapping. The base station may also transmit the mapped GP reference signal. A mobile device may receive the GP reference signal and modify at least one parameter of a plurality of parameters based, at least in part, on processing of the GP reference signal.

Methods, systems, and devices for wireless communications are described. A first wireless device may identify a reference signal sequence (e.g., a demodulation reference signal (DMRS) sequence) based on a cyclic shift associated with a control channel for communications with a second wireless device. For example, the first wireless device may identify the cyclic shift associated with transmitting a message to the second wireless device via the control channel. In another example, the first wireless device may estimate the cyclic shift associated with receiving a message from the second wireless device via the control channel. The first wireless device may then communicate with the second wireless device based on the reference signal sequence. For example, the first wireless device may transmit or receive (e.g., via a shared channel) the reference signal sequence to or from the second wireless device.

The present disclosure relates to methods and devices for wireless communication including an apparatus, e.g., a UE and/or base station. The apparatus can determine a first orthogonal matrix and a second orthogonal matrix, the first orthogonal matrix including a size of M×N1 with M×N1 rows and M×N1 columns, the second orthogonal matrix including a size of M×N2 with M×N2 rows and M×N2 columns. The apparatus can also determine a first codebook based on the first orthogonal matrix and a second codebook based on the second orthogonal matrix, the first codebook and the second codebook including a plurality of codepoints. Also, the apparatus can transmit a first signal and a second signal, the first signal including a first codepoint of the plurality of codepoints in the first codebook, the second signal including a second codepoint of the plurality of codepoints in the second codebook.

This application relates to the field of wireless communications. In an embodiment, a data transmission method comprises generating, by an access point (AP), a scheduling frame, wherein the scheduling frame comprises a first user information field that carries first trigger information for one or more first stations (STAs) and a second user information field that carries second trigger information for one or more second STAs; sending, by the AP, the scheduling frame, wherein the scheduling frame further comprises a field indicating the scheduling frame is an extension scheduling frame, the extension scheduling frame has a trigger frame type that complies with a protocol later than the 802.11ax standard protocol

Comb adaptation for interlaced frequency division multiplex (IFDM) demodulation reference signals (DMRS) is discussed. Transmission configuration for DMRS may be assigned to UEs with a coded combination of cyclic shift, OCC, and comb value. Some assigned combinations provide for a different comb value to be used for the different slots in the same subframe. Further aspects provide additional interference randomization through comb shifting, using inter-subframe hopping functions. Additionally, where retransmissions are present without uplink grant, the UE may select comb values for retransmissions based on the counter number for the retransmissions, which are different than the comb values used for the original DMRS transmissions.

A UE transmits to a BS an indication of a number of PTRS ports. The number of PTRS ports is a suggestion to the BS for allocating the indicated number of PTRS ports to the UE for transmission of PTRS from the BS to the UE to enable the UE to perform phase tracking. The method also includes allocating, by the BS, PTRS ports to the UE based on the indication of the number of PTRS ports. The indication may be included in a UCI message, MAC CE, or RRC message transmitted by the UE to the BS. The BS may map the allocated PTRS ports to DMRS ports corresponding to spatial streams transmitted by the BS. The UE may estimate CPE of each spatial stream, measure correlations of the estimated CPE among the spatial streams, and use the correlations to determine the suggested number of PTRS.