Provided is a method and apparatus for discontinuously transmitting/receiving packets for low-power consumption of a terminal in a cellular system for packet transmission. The present invention provides a method and apparatus that can perform a low-power consuming operation when a terminal is in active state in a cellular system. The method for discontinuously transmitting/receiving packet data to reduce power consumption of a terminal in a cellular system, including the steps of: a) establishing discontinuous transmission/reception (DTX/DRX) parameters including discontinuous DTX/DRX cycle information for terminals operating in a transmission suspension mode, which is a sub-state of an active state; and b) performing DTX/DRX based on the DTX/DRX parameters in the terminals operating in the transmission suspension mode.

Aspects of this disclosure relate to detecting power associated with an individual carrier of a carrier aggregated signal. In an embodiment, an aggregated carrier including at least a first carrier and a second carrier is provided. An indication of power of the first carrier of the aggregated carrier is detected. Separately from detecting the indication of power of the first carrier, an indication of power of the second carrier of the aggregated carrier is detected. The power associated with a radio frequency (RF) signal provided to an RF source associated with the first carrier can be adjusted based on the indication of power of the first carrier.

Embodiments of this application describe a power control method and a device, and relate to the field of communications technologies. A network device operating in a full-duplex mode can correctly receive data during data sending. The method may include receiving, by user equipment (UE), power control parameter information of an uplink transmit power from a network device, where the power control parameter information includes first power control parameter information and second power control parameter information, the first power control parameter information is used to calculate an uplink transmit power for data transmission on a non-full-duplex resource, and the second power control parameter information includes a parameter for calculating an uplink transmit power for data transmission on a full-duplex resource. The method may also include determining, by the UE, an uplink transmit power based on the power control parameter information and a resource type used for uplink transmission, where the resource type includes a full-duplex resource and a non-full-duplex resource.

A method for initiating handover of a wireless device includes identifying a wireless device exhibiting a low power headroom, the wireless device being attached to an access node on a first frequency band, determining a first incidence of packet drops associated with a data transmission from the wireless device on the first frequency band at a cell site router, and determining a second incidence of packet drops associated with another data transmission on a second frequency band of the access node at the cell site router. Based at least in part on the first incidence of packet drops being greater than the second incidence of packet drops, handover of the wireless device from the first frequency band to the second frequency band is initiated. Systems and devices relate to initiating handover of a wireless device.

An embodiment of the present invention provides a method for transmitting a plurality of packets by a sidelink terminal in a wireless communication system, the method comprising the steps of: transmitting a first packet of a plurality of packets with a first period and a first transmission power value; and transmitting a second packet of the plurality of packets with a second period and a second transmission power value, wherein the first period is longer than the second period, and the first transmission power value is greater than the second transmission power value. The UE is capable of communicating with at least one of another UE, a UE related to an autonomous driving vehicle, the BS or a network.

An embodiment of the present invention provides a method for transmitting a plurality of packets by a sidelink terminal in a wireless communication system, the method comprising the steps of: transmitting a first packet of a plurality of packets with a first period and a first transmission power value; and transmitting a second packet of the plurality of packets with a second period and a second transmission power value, wherein the first period is longer than the second period, and the first transmission power value is greater than the second transmission power value.

A communication device generates a transmission signal for transmission via a wireless communication channel, wherein the transmission signal corresponds to a physical layer (PHY) data unit that conforms to a range extension mode of a first communication protocol. Generating the PHY data unit includes generating a preamble of a PHY data unit, wherein the preamble is generated to include: a legacy signal field that includes information indicating a duration of the PHY data unit, a duplicate of the legacy signal field, a plurality of subfields of a non-legacy signal field, and a plurality of additional subfields with the same data as the plurality of subfields of the non-legacy signal field. The plurality of subfields of the non-legacy signal field and the plurality of additional subfields are modulated to signal to a receiving device that the PHY data unit conforms to the range extension mode of a first communication protocol.

A method and apparatus for controlling transmit power in a wireless local area network (WLAN). For example, a station may receive, from an access point (AP), a beacon frame that includes a field indicating a maximum transmission power for at least one of a plurality of operational bandwidth that the AP supports. The station may determine a transmission power for a signal to be transmitted to the AP based on the at least one of the plurality of operational bandwidths indicated in the received beacon. The station may then transmit the signal at the determined transmission power.

A method and apparatus for controlling transmit power in a wireless local area network (WLAN). For example, a station may receive, from an access point (AP), a beacon frame that includes a field indicating a maximum transmission power for at least one of a plurality of operational bandwidth that the AP supports. The station may determine a transmission power for a signal to be transmitted to the AP based on the at least one of the plurality of operational bandwidths indicated in the received beacon. The station may then transmit the signal at the determined transmission power.

In a transmission control method of connection confirmation data packets and a terminal, the terminal can optionally adjust time intervals of the connection confirmation data packets in re-transmissions to a wireless network device for keeping the data link between the wireless network device and the terminal, such that the time intervals are not kept at a fixed time interval but at adjustable time intervals.