A serial bidirectional communication method is provided. The method includes: performing a downlink transmission and performing an uplink transmission. The downlink transmission includes: receiving first downlink data through a first transmission terminal, wherein the first downlink data comprises at least one control command, and the at least one control command is cascaded and configured to control at least one electronic device; removing one, corresponding to a local device, of the at least one control command from the first downlink data to form second downlink data, wherein the local device is one of the at least one electronic device; and when there is a control command remaining in the second downlink, outputting the second downlink data through a second transmission terminal. The uplink transmission includes outputting first uplink data through the first transmission terminal. The first uplink data includes local information generated by the local device.

A method for reducing power consumption of a terminal that communicates with a base station in a mobile communication system using a multi-carrier structure composed of a primary component carrier and at least one secondary component carrier comprises: receiving a discontinuous reception (DRX) parameter group for multi carriers from the base station; and setting the multi carriers to the same parameter value, by using the received parameter group. The method for reducing power consumption of the terminal further comprises: performing a downlink control channel receive operation on each carrier according to a DRX cycle. As the base station in the mobile communication system using the multi-carrier structure simplifies the DRX process for reducing power consumption of a terminal by reducing signaling load for the multi-carrier control of the terminal, it becomes possible to reduce power consumption of the terminal.

A radio device transmits outgoing radio signals on a carrier frequency to a further radio device and receives incoming radio signals on the same carrier frequency from the further radio device. The radio device switches at least between a first antenna configuration and a second antenna configuration, e.g., by using a switch. In the first antenna configuration, the outgoing radio signals are transmitted via at least one first antenna while simultaneously the incoming radio signals are received via at least one second antenna. In the second antenna configuration, the outgoing radio signals are transmitted via the at least one second antenna while simultaneously the incoming radio signals are received via the at least one first antenna.

A radio device transmits outgoing radio signals on a carrier frequency to a further radio device and receives incoming radio signals on the same carrier frequency from the further radio device. The radio device switches at least between a first antenna configuration and a second antenna configuration, e.g., by using a switch. In the first antenna configuration, the outgoing radio signals are transmitted via at least one first antenna while simultaneously the incoming radio signals are received via at least one second antenna. In the second antenna configuration, the outgoing radio signals are transmitted via the at least one second antenna while simultaneously the incoming radio signals are received via the at least one first antenna.

Methods, systems, and devices for wireless communications are described. A method may include identifying, by a first user equipment (UE), a schedule associated with the first UE and a second UE of the group of UEs in direct communications with the first UE. The schedule may include an awake period reserved for directional communications between the first UE and the second UE. The first UE may manage the awake period reserved for the directional communications based on traffic information associated with the first UE, and may communicate with the second UE in accordance with the managing. The awake period reserved for directional communications may include an awake period reserved for uni-directional communications or an awake period reserved for bi-directional communications.

Methods, systems, and devices for wireless communications are described. A method may include identifying, by a first user equipment (UE), a schedule associated with the first UE and a second UE of the group of UEs in direct communications with the first UE. The schedule may include an awake period reserved for directional communications between the first UE and the second UE. The first UE may manage the awake period reserved for the directional communications based on traffic information associated with the first UE, and may communicate with the second UE in accordance with the managing. The awake period reserved for directional communications may include an awake period reserved for uni-directional communications or an awake period reserved for bi-directional communications.

A method for reducing power consumption of a terminal that communicates with a base station in a mobile communication system using a multi-carrier structure composed of a primary component carrier and at least one secondary component carrier comprises: receiving a discontinuous reception (DRX) parameter group for multi carriers from the base station; and setting the multi carriers to the same parameter value, by using the received parameter group. The method for reducing power consumption of the terminal further comprises: performing a downlink control channel receive operation on each carrier according to a DRX cycle. As the base station in the mobile communication system using the multi-carrier structure simplifies the DRX process for reducing power consumption of a terminal by reducing signaling load for the multi-carrier control of the terminal, it becomes possible to reduce power consumption of the terminal.

For fast and dynamic adaptation of downlink (DL) and uplink (UL) resource, DL/UL resource switching at a symbol level or at a sub-symbol level is proposed. In detail, a network node transmits s DL data in a first symbol, and receives UL data in a second symbol, which is the next symbol of the first symbol.

For fast and dynamic adaptation of downlink (DL) and uplink (UL) resource, DL/UL resource switching at a symbol level or at a sub-symbol level is proposed. In detail, a network node transmits s DL data in a first symbol, and receives UL data in a second symbol, which is the next symbol of the first symbol.

Various embodiments disclosed herein provide for a multi-beam Listen Before Talk which is a coexistence mechanism used by wireless technologies such as Wi-Fi, to access unlicensed shared spectrum, such as the ISM UNII bands (5 GHz). The embodiments disclosed herein enable a transceiver to determine whether or not there is activity on a beam to avoid causing interference. The transceiver can determine that there is activity in a certain direction, and then avoid transmitting on a beam in that direction until the activity ceases. While there is activity in a first beam, the transceiver can continue to transmit on other beams that will not cause interference with a transmission associated with the first beam.