Abstract:
A data transmission method, device, and system are provided. The method includes: sending, by a base station, an NPSS to UE by using a first subframe in a first radio frame and a first subframe in a second radio frame, where the first radio frame and the second radio frame are consecutive, and both the first radio frame and the second radio frame use a TDD uplink-downlink subframe configuration; sending, by the base station, an NPBCH to the UE by using a second subframe in the first radio frame and a second subframe in the second radio frame; sending, by the base station, an NSSS to the UE by using a third subframe in the first radio frame; and sending, by the base station, a SIB1-NB to the UE by using a third subframe in the second radio frame.
Abstract:
This application provides a wireless communication method and an apparatus. The method includes: A terminal device receives first indication information from a network device, where the first indication information is used to indicate a first maximum multiple-input multiple-output MIMO layer quantity N used by the terminal device when the terminal device performs wireless communication, and N is an integer greater than or equal to 1; and the terminal device performs wireless communication with the network device based on the first maximum MIMO layer quantity N, so that the maximum MIMO layer quantity that needs to be used by the terminal device can be switched as required.
Abstract:
A radio communication method, a chip, and a system, to improve physical downlink control channel decoding reliability and communication quality. The method includes: obtaining, in a second scheduling period based on a first candidate downlink control channel and first information, a second candidate downlink control channel from a first control resource set corresponding to the second scheduling period, where the first information is used to indicate a correspondence between the first candidate downlink control channel and the second candidate downlink control channel, and the first candidate downlink control channel is any candidate downlink control channel in a first control resource set corresponding to a first scheduling period; and combining and decoding the first candidate downlink control channel and the second candidate downlink control channel.
Abstract:
This application discloses a data transmission method which includes: receiving DCI, wherein two TBs or one TB can be scheduled in the DCI, the DCI comprises a third bit, the third bit indicates that a quantity of the TB(s) scheduled in the DCI is 1 or 2, and the DCI further comprises a first bit and/or a second bit; and when the quantity of the TB(s) is 1, performing, based on the third bit, and the first bit or second bit, uplink or downlink data transmission, wherein the first or second bit indicates a NDI associated with the TB scheduled in the DCI; or when the quantity of the TB(s) is 2, performing, based on the third, first bit, and second bit, uplink or downlink data transmission, wherein the first and the second bit respectively indicate two NDIs associated with the two TBs.
Abstract:
Embodiments of the present invention provide a multicast-based wireless communication method, a terminal device, and a base station. The method includes: in a process of receiving a current multicast service, receiving, by a terminal device, downlink control information DCI transmitted by a base station, where the DCI is used to schedule a current multicast traffic channel MTCH, and the DCI includes indication information used to indicate that configuration information of the MTCH is modified in a next modification period MP or a current MP; and obtaining, by the terminal device, modified configuration information according to the indication information. System flexibility is improved according to the embodiments of the present invention.
Abstract:
Embodiments of this application provide a data sending method, a data receiving method, a transmit-end device, and a receive-end device. The data sending method provided in the embodiments of this application may include: performing scrambling code initialization to generate a scrambling code; scrambling a data block based on the scrambling code; repeatedly sending the scrambled data block; performing scrambling code initialization to generate a new scrambling code when an interval after previous scrambling code initialization of the data block is greater than or equal to a preset scrambling code initialization parameter threshold; scrambling the data block again based on the generated new scrambling code; and repeatedly sending the data block scrambled again. The embodiments of this application can improve efficiency of data transmission between a transmit-end device and a receive-end device.
Abstract:
A downlink scheduling data monitoring method, a downlink scheduling data sending method, and an apparatus are provided. The method includes: starting a timer; and after it is determined that the timer expires, monitoring, by using a first discontinuous reception DRX monitoring cycle, downlink scheduling data sent by a base station, where duration of the first DRX monitoring cycle is in a unit of minute or hour. After it is determined that the timer expires, the downlink scheduling data is monitored by using the first DRX monitoring cycle whose duration is in a unit of minute or hour. In this way, not only power consumption is reduced, but also the downlink scheduling data can be monitored.
Abstract:
Embodiments of the present invention provide data sending and receiving methods and devices. The data sending method includes: sending a first data transmit power control (TPC) command and first service data to first user equipment (UE) in a first sending time period, so that the first UE performs inner loop power control according to the first data TPC command and receives the first service data; and sending a second preamble transmit power control TPC command to a second UE in a second pre-configured time period, so that the second UE establishes inner loop power control loop according to the second preamble transmit power control TPC command and receives second service data in a second sending time period.
Abstract:
A method and an apparatus for selecting a transport format are provided. The method includes: receiving a transport format parameter of a user equipment sent by a base station, where the transport format parameter of the user equipment includes a primary stream grant value and an association between the primary stream and the secondary stream; determining a maximum transport block length of the primary stream according to a preset value of the maximum transmit power of the user equipment and the association between the primary stream and the secondary stream; determining an actual transport block length of the primary stream according to a size relationship between a theoretical transport block length of the primary stream and the maximum transport block length; and determining a transport block length of the secondary stream.
Abstract:
Embodiments of the present invention provide a method and an apparatus for power control. In one embodiment, a current serving node is a first base station. A first switching time at which the second base station switches from transmission of a non-ABS subframe to transmission of an ABS subframe is determined according to an ABS pattern parameter of a second base station. At the first switching time, a target SINR value is adjusted before current switching to obtain a target SINR value of the first switching time.