A method for mitigating inter-mode interference (IMI) caused by antenna misalignment in an orbital angular momentum (OAM) mode multiplexing (OAM-MM) system and detecting a signal in an OAM beam. The method includes receiving an OAM beam bearing a signal, determining a phase-shifting value based on at least one of a type of the antenna misalignment and one or more antenna-misalignment parameters, wherein the phase-shifting value belongs to a beamforming (BF) codebook, shifting the phase of the received OAM beam using the determined phase-shifting value, and detecting the signal from the phase-shifted OAM beam.

A method for mitigating inter-mode interference (IMI) caused by antenna misalignment in an orbital angular momentum (OAM) mode multiplexing (OAM-MM) system and detecting a signal in an OAM beam. The method includes receiving an OAM beam bearing a signal, determining a phase-shifting value based on at least one of a type of the antenna misalignment and one or more antenna-misalignment parameters, wherein the phase-shifting value belongs to a beamforming (BF) codebook, shifting the phase of the received OAM beam using the determined phase-shifting value, and detecting the signal from the phase-shifted OAM beam.

The disclosed subject matter relates to techniques for determining channel state information (CSI) in New Radio (NR) access communication systems with phase tracking. In one embodiment, a method is provided that comprises receiving, by a device comprising a processer, configuration information from a network device of a wireless communication network indicating that a PTRS protocol has been configured for wireless communications between the device and the network device. The method further comprises, determining, by the device, a resource density of resource elements of the wireless communication network allocated for the phase tracking reference signal protocol, determining, by the device, CSI based on the resource density, and reporting, by the device, the CSI to the network device.

The disclosed subject matter relates to techniques for determining channel state information (CSI) in New Radio (NR) access communication systems with phase tracking. In one embodiment, a method is provided that comprises receiving, by a device comprising a processer, configuration information from a network device of a wireless communication network indicating that a PTRS protocol has been configured for wireless communications between the device and the network device. The method further comprises, determining, by the device, a resource density of resource elements of the wireless communication network allocated for the phase tracking reference signal protocol, determining, by the device, CSI based on the resource density, and reporting, by the device, the CSI to the network device.

A system and a method are disclosed for normalizing Log-Likelihood Ratios for bits of a transport block. For a narrowband channel estimation (NBCE), a normalization factor is selected based on an estimated delay spread, a cyclic prefix, an estimated Doppler spread, a rank, a modulation and coding scheme (MCS) and a signal-to-noise ratio (SNR) for the transport block, and an input LLR.sub.in for the individual bits of the transport block are scaled to respectively form an output LLR.sub.out for the individual bits of the transport block using the normalization factor. For a wideband channel estimation, a normalization factor is selected based on the rank/MCS/SNR of the transport block, and the input LLR.sub.in for the individual bits of the transport block are scaled to respectively form the output LLR.sub.out for the individual bits of the transport block using the normalization factor.

A system and a method are disclosed for normalizing Log-Likelihood Ratios for bits of a transport block. For a narrowband channel estimation (NBCE), a normalization factor is selected based on an estimated delay spread, a cyclic prefix, an estimated Doppler spread, a rank, a modulation and coding scheme (MCS) and a signal-to-noise ratio (SNR) for the transport block, and an input LLR.sub.in for the individual bits of the transport block are scaled to respectively form an output LLR.sub.out for the individual bits of the transport block using the normalization factor. For a wideband channel estimation, a normalization factor is selected based on the rank/MCS/SNR of the transport block, and the input LLR.sub.in for the individual bits of the transport block are scaled to respectively form the output LLR.sub.out for the individual bits of the transport block using the normalization factor.

This application provides a quasi co-location (QCL) indication method and a related device, and may be applied to coordinated multistation transmission. In the method, a terminal receives QCL indication information, where the QCL indication information indicates that time-frequency spread information of a demodulation reference signal (DMRS) is associated with time-frequency spread information of N tracking reference signals (TRSs) (or a TRS corresponding to the DMRS) and that delay-frequency offset information of the DMRS is associated with delay-frequency offset information of M TRSs.

This application provides a quasi co-location (QCL) indication method and a related device, and may be applied to coordinated multistation transmission. In the method, a terminal receives QCL indication information, where the QCL indication information indicates that time-frequency spread information of a demodulation reference signal (DMRS) is associated with time-frequency spread information of N tracking reference signals (TRSs) (or a TRS corresponding to the DMRS) and that delay-frequency offset information of the DMRS is associated with delay-frequency offset information of M TRSs.

Methods of wireless communication are provided. The method performed by a user equipment (UE) includes: the UE obtaining a first information and/or a second information from a base station, and using, the first information and/or the second information for a downlink reception and/or an uplink transmission. The method performed by a base station includes: the base station indicating first information and/or a second information to UE; and configuring the UE to use the first information and/or the second information for a downlink reception and/or an uplink transmission.

An information transmission method and apparatus are provided. The method includes: A first communication apparatus determines feature information of a target channel and first common delay information, and determines scrambling information based on the feature information of the target channel. The first communication apparatus processes the first common delay information based on the scrambling information, to obtain second common delay information. The first communication apparatus sends the second common delay information through the target channel. A second communication apparatus receives the second common delay information through the target channel, and determines the feature information of the target channel. The second communication apparatus determines descrambling information based on information of the target channel, and further processes the second common delay information based on the descrambling information to obtain the first common delay information. In this solution, both the first communication apparatus and the second communication apparatus respectively determine corresponding scrambling information and descrambling information based on feature information of a transmission channel of common delay information, to ensure that the second communication apparatus obtains correct first common delay information.