Patent classifications
H04B7/2615
Framing for an adaptive modulation communication system
A system and method for mapping a combined frequency division duplexing (FDD) Time Division Multiplexing (TDM)/Time Division Multiple Access (TDMA) downlink subframe for use with half-duplex and full-duplex terminals in a communication system. Embodiments of the downlink subframe vary Forward Error Correction (FEC) types for a given modulation scheme as well as support the implementation of a smart antenna at a base station in the communication system. Embodiments of the system are also used in a TDD communication system to support the implementation of smart antennae. A scheduling algorithm allows TDM and TDMA portions of a downlink to efficiently co-exist in the same downlink subframe and simultaneously support full and half-duplex terminals.
Downlink subframe shortening in time-division duplex (TDD) systems
A guard period for switching between uplink and downlink subframes is created by shortening a downlink subframe, i.e., by not transmitting during one or more symbol intervals at the end of the subframe. A grant message includes signaling indicating when a shortened sublimate is being transmitted. An example method is implemented in a receiving node configured to receive data from a transmitting node in subframes having a predetermined number of symbol intervals. In an LTE system, this receiving node may be a UE, and the subframes are downlink subframes. This example method includes determining that a received subframe is to be shortened, relative to the predetermined number of symbol intervals and, in response to this determination, disregarding a last part of the received subframe by disregarding one or more symbols at the end of the received subframe when processing the received subframe.
Systems and methods for OFDM with flexible sub-carrier spacing and symbol duration
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.
FREQUENCY DIVISION DUPLEXING IN UNPAIRED SPECTRUM
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication that the UE is to communicate using a frequency division duplexing (FDD) configuration on an unpaired frequency band that includes at least one uplink frequency region and at least one downlink frequency region in accordance with the FDD configuration. The UE may communicate the FDD configuration. Numerous other aspects are provided.
Spectrum sharing for a terrestrial-satellite hybrid environment
Various arrangements for spectrum sharing among a terrestrial network and a non-terrestrial network are presented herein. The terrestrial network may assign a first bandwidth part of a channel for use for communication between a plurality of user equipment (UE) and the terrestrial network when a high signal strength is present. The terrestrial network may assign a second bandwidth part for use for communication between the plurality of UE and the terrestrial network when a low signal strength is present. The second bandwidth part can overlap with the first bandwidth part. A third bandwidth part can be assigned for use for communication between the plurality of UEs and the non-terrestrial network. The third bandwidth part can overlap with the first bandwidth part but not the second bandwidth part.
Relay Transmission Method and Relay Node
Disclosed in implementations of the present disclosure are a method for relay transmission and a relay node. The method comprises: a relay layer of a first node receives target data sent by a second node, wherein the second node is an anchor node or a relay node, the first node is wirelessly connected to the second node, the anchor node is wiredly connected to a core network, and a destination node of the target data is a third node; and the relay layer of the first node processes the received target data.
DIGITAL ENHANCED CORDLESS TELECOMMUNICATIONS SYSTEM AND METHOD
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.
METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING SYNCHRONIZATION SIGNAL BLOCK
The present disclosure provides a method for receiving a synchronization signal block by a UE in a wireless communication system. Particularly, the method includes receiving at least one SSB mapped to a plurality of symbols, wherein two regions for candidate SSBs in which the at least one SSB can be received are allocated in a specific time duration including the plurality of symbols, and a time between the two regions, a time before the two regions and a time after the two regions are identical in the specific time duration.
Systems and methods for OFDM with flexible sub-carrier spacing and symbol duration
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.
Method and device for transmitting/receiving synchronization signal and system information for terminal in new wireless access network
Provided is a flexible numerology configuration method for an NR. In particular, a method may be provided for transmitting a synchronization signal and system information for a user equipment in a new radio access network. The method may include defining one or more subcarrier spacings to transmit at least one synchronization signal and at least one system information transmission channel in a frequency band of the new radio access network, determining one of the one or more subcarrier spacings to transmit the at least one synchronization signal and the at least one system information transmission channel, and transmitting at least one of the at least one synchronization signal and the at least one system information transmission channel based on the determined subcarrier spacing.