Abstract:
A method is provided for transmission control of a user terminal utilizing half-duplex frequency division duplex operation. The method includes defining a transmission qap pattern for at least one user terminal. The transmission gap pattern indicates 1) sub-frames during which the user terminal is to perform uplink transmission, 2) sub-frames during which the user terminal is to expect to perform downlink reception including at least reference symbols for performing downlink tracking, and 3) at least one of a Tx-to-Rx switching sub-frame during which the user terminal is to switch from the uplink transmission to the downlink reception, and a Rx-to-Tx switching sub-frame during which the user terminal is to switch from the downlink reception to the uplink transmission. The transmission qap pattern is provided to the user terminal, and the user terminal is operated according to the transmission qap pattern.
Abstract:
An example technique may include controlling receiving a first block of time domain symbols and a second block of time domain symbols, converting the blocks of time domain symbols to the frequency domain to create a first pre-equalized block of frequency domain symbols and a second pre-equalized block of frequency domain symbols, respectively, applying, a linear phase shift to the frequency domain symbols to compensate for a conjugating and time-reversing of corresponding pre-spread domain symbols being performed at a transmitter before spreading of the pre-spread domain symbols, and creating a first equalized block of frequency domain symbols and a second equalized block of frequency domain symbols as a function of the first and second pre-equalized blocks of frequency domain symbols wherein at least one of the first and second pre-equalized blocks of frequency domain symbols has the linear phase shift applied.
Abstract:
Various communication systems may benefit from mechanisms for access-based communications. For example, machine-type communication in long term evolution (LTE) communication systems may benefit from a mechanism for user equipment access-based machine-to-machine communication. A method can include a user equipment entering a transaction state. The method can also include suspending reception of paging messages during an idle period of the transaction state.
Abstract:
A method and apparatus can be configured to receive a first scheduling request. The first scheduling request corresponds to a request for a first access point to process data. The method can also include transmitting a second scheduling request. The second scheduling request corresponds to a request to transmit data to a second access point. The transmitting the second scheduling request comprises transmitting the second scheduling request before the data is processed at the first access point.
Abstract:
Various communication systems may benefit from rerouting considerations. For example, fifth generation (5G) systems dealing with radio link failure detection and data rerouting, particularly mmWave 5G systems, may benefit from rapid rerouting methods and systems. A method can include transmitting, from an access point, a downlink control message to a user equipment. The method can also include attempting to detect a Fast-ACK transmission signal from the user equipment in response to the transmitted downlink control message. The method can further include transmitting a rerouting request for the user equipment when the Fast-ACK transmission signal is not detected.
Abstract:
Systems, methods, apparatuses, and computer program products for random access channel (RACH) with a grid of beams for communication systems are provided. One method includes transmitting, by a base station, a beacon signal in one time slot with multiple switched beams, wherein the beams cover an intended coverage area with a grid-of-beams in both horizontal and vertical directions. The method may also comprise switching receiving beams in the grid-of-beams at a network reserved random access channel (RACH) slot by following an identical or directly related beam switching pattern in a downlink (DL) beacon channel. Another method includes detecting, by a user equipment, a beam ID in the downlink beacon channel, selecting the RACH slot using the detected beam ID, and transmitting, by the user equipment, a random access channel (RACH) signature in one or multiple beam blocks within a random access channel (RACH) slot.