Embodiments are provided for supporting variable sub-carrier spacing and symbol duration for transmitting OFDM or other waveform symbols and associated cyclic prefixes. The symbol duration includes the useful symbol length and its associated cyclic prefix length. The variable sub-carrier spacing and symbol duration is determined via parameters indicating the sub-carrier spacing, useful symbol length, and cyclic prefix length. An embodiment method, by a network or a network controller, includes establishing a plurality of multiple access block (MAB) types defining different combinations of sub-carrier spacing and symbol duration for waveform transmissions. The method further includes partitioning a frequency and time plane of a carrier spectrum band into a plurality of MAB regions comprising frequency-time slots for the waveform transmissions. The MAB types are then selected for the MAB regions, wherein one MAB type is assigned to one corresponding MAB region.

Embodiments are provided for supporting variable sub-carrier spacing and symbol duration for transmitting OFDM or other waveform symbols and associated cyclic prefixes. The symbol duration includes the useful symbol length and its associated cyclic prefix length. The variable sub-carrier spacing and symbol duration is determined via parameters indicating the sub-carrier spacing, useful symbol length, and cyclic prefix length. An embodiment method, by a network or a network controller, includes establishing a plurality of multiple access block (MAB) types defining different combinations of sub-carrier spacing and symbol duration for waveform transmissions. The method further includes partitioning a frequency and time plane of a carrier spectrum band into a plurality of MAB regions comprising frequency-time slots for the waveform transmissions. The MAB types are then selected for the MAB regions, wherein one MAB type is assigned to one corresponding MAB region.

A method and an apparatus for mapping a reference signal. The method includes: mapping a target-class signal to a target symbol, where the target symbol is some symbols in a first symbol set on a time-frequency resource block, the first symbol set is a set of some symbols or all symbols on the time-frequency resource block, the target-class signal has at least two functions, and the at least two functions include a function of estimating a parameter that affects signal transmission; and mapping the reference signal to a symbol in the first symbol set other than the target symbol, where the reference signal has the function of estimating a parameter that affects signal transmission.

Presented in the present specification are a method whereby a station performs beamforming training in a wireless LAN (WLAN) system, and a device for same. In particular, presented in the present specification are a method whereby a station performs beamforming training for frequency division multiple access (FDMA) transmission, and a device for same. The method according to the present specification comprises the steps of: transmitting a beamforming setup frame including beamforming training operation information and identification information on one or more second stations corresponding to one FDMA group; performing FDMA beamforming training by using multiple transmission sectors simultaneously on the basis of the beamforming training operation information; receiving a feedback result of the performed FDMA beamforming training from the one or more second stations; and transmitting a selection frame including channel allocation information for each station and FDMA transmission configuration information determined on the basis of the received feedback result.

Methods, systems, and devices for wireless communications are described. In some wireless communications systems, a base station may transmit a control channel such as a PDCCH using one or more control resource sets (CORESETs). A CORESET may be associated with a number of different transmission configuration indicator (TCI) states which may specify information that a UE may use to receive the PDCCH. In some cases, the UE may identify an association between resources of the CORESET and a number of TCI states assigned to a CORESET using various different multiplexing techniques, such as time division multiplexing (TDM). Some associations between the resources of the CORESET and the TCI states may include a mapping of the resources of the CORESET to the different TCI states. The UE may decode the PDCCH based on the different TDM techniques used to configure the CORESET.

Communication equipment communicates in a licensed frequency band using a licensed band physical channel structure (licensed structure) and communicates in an unlicensed frequency communication band using an unlicensed band physical channel structure (unlicensed structure) where the unlicensed structure includes at least the same symbol times and subcarrier frequency divisions as in the licensed structure. The symbol times and subcarriers form a plurality of time-frequency communication resource elements. A set of symbol times and subcarrier frequency divisions form a licensed reference subset of communication resource elements that are allocated for reference signal transmission in the licensed structure. The same set of symbol times and subcarrier frequency divisions form an unlicensed reference subset of communication resource elements that are allocated for reference signal transmission in the unlicensed structure.

A DECT system and a method for communicating between a DECT fixed point and multiple DECT portable points. The method may include step (a) of communicating between a master communication processor of the DECT fixed point and one or more DECT portable points during master communication slots. The method may also include step (b) of communicating between a slave communication processor of the DECT fixed point and at least one of the DECT portable points during slave communication slots. Step (a) and step (b) are executed according to an allocation of master communication slots and slave communication slots, wherein the allocation facilitates concurrent slave communication processor communications and master communication processor communications.

Example embodiments presented herein are directed towards a base station, and corresponding method therein, for determining a control timing configuration. The control timing configuration provides a subframe timing for configuring PUSCH and uplink HARQ-ACK control timing for a cell serving a user equipment in a multiple cell communications network. The user equipment is served by a TDD based cell and a FDD based cell. Example embodiments are also directed towards a user equipment, and corresponding method therein, determining the control timing configuration discussed above.

Aspects of the present disclosure provide for the pairing of an inter-band carrier with a time division duplex (TDD) carrier. If the paired band is a frequency division duplex (FDD) band, then base stations and mobile devices may transmit and receive additional thin control channels on FDD carriers to enable full duplex operations. If the paired band is a TDD band, then a conjugate or inverse carrier may be used such that full duplex, or a close approximation thereto, is achieved. With the introduction of a paired channel and fast control channels, rapid uplink/downlink switching may be achieved for TDD carriers efficiently and effectively. Other aspects, embodiments, and features are also claimed and described.

Provided in an embodiment of the present invention are a wireless communication method and device capable of minimizing self-interference at a terminal device and improving communication performance. The method comprises: determining a magnitude of self-interference at a terminal device generated in a first uplink frequency band and a first downlink frequency band over which the terminal device performs communication with a network device; and transmitting a first message to the network device, the first message indicating the magnitude of the self-interference at the terminal device generated in the first UL frequency band and the first DL frequency band.