Abstract: An information transmission method, an apparatus, and a system are disclosed. A first base station may identify, according to indication information, global information and local information in uplink information sent by user equipment. If the indication information indicates that the uplink information includes the global information, the first base station uploads the global information to a core network device. If the indication information indicates that the uplink information includes the local information, the first base station directly delivers the local information to a neighboring base station to cause the neighboring base station to deliver the local information to user equipment in a cell covered by the neighboring base station.

Abstract: A method includes generating a preamble for a protocol version of a wireless local area network, where the preamble includes a legacy signal (L-SIG) field and a high efficiency signal (HE-SIG) field that are arranged in order, the HE-SIG field includes a first orthogonal frequency division multiplexing OFDM symbol and a second OFDM symbol that are arranged in order, and an input information bit of the first OFDM symbol is the same as that of the second OFDM symbol, and sending the preamble to a receive end device, so that the receive end device restores the preamble, and when determining that input information bits obtained after restoring the first OFDM symbol and the second OFDM symbol are the same, determines that the preamble is the preamble of the protocol version.

Abstract: Embodiments of the present invention provide a data transmission method, a base station, and a terminal device. The method includes: determining first indication information, where the first indication information is used to indicate a coding method that needs to be used for a service channel of to-be-transmitted data; and sending control signaling to a terminal device, where the control signaling includes the first indication information. In the embodiments of the present invention, the base station sends the first indication information to the terminal device by using the control signaling, so that the terminal device determines, according to the first indication information, the coding method that needs to be used for the service channel over which the to-be-transmitted data is transmitted.

Abstract: A method for operating a user equipment (UE) adapted to transmit beacons includes adjusting an initial beacon interval between successively transmitted beacons in accordance with a value of at least one parameter and a beacon configuration received from a network entity, thereby producing an adjusted beacon interval, and transmitting a beacon selected in accordance with the adjusted beacon interval in a beacon transmission opportunity determined in accordance with the initial beacon interval.

Abstract: This application discloses a measurement method for a terminal device, including: receiving measurement configuration information; and measuring, in m measurement windows in a measurement gap based on the measurement configuration information, m groups of to-be-measured signals sent by a network device. Correspondingly, this application also describes a measurement configuration method, a terminal device, and a network device. According to an example implementation, the terminal device discontinuously performs measurement in the measurement windows in the measurement gap, and transmits data by using an interval between the measurement windows, to implement discontinuous measurement in the measurement gap, and further reduce a data transmission delay.

Abstract: An information transmission method and apparatus, the method including determining measurement configuration information, where the measurement configuration information includes at least one group of measurement configuration parameters, and each of the at least one group of measurement configuration parameters corresponds to at least one cell and is used by a terminal device to measure a synchronization signal block of the at least one cell, and sending the measurement configuration information to the terminal device

Abstract: This application discloses a communication method and a device, and the method includes: sending, by a first base station, a first request message, where the first request message is used to request one or more second base stations located in a paging notification area of a target terminal to page the target terminal; and if the first base station receives, within preset duration, a second request message that is sent by one of the one or more second base stations and that is used to obtain a context of the target terminal, sending, by the first base station, the context of the target terminal to the second base station that sends the second request message. A terminal device in a third mode may be paged by using the method and the device in this application.

Abstract: A method, an apparatus and a network device for user data transmission are provided, where the method includes: transmitting a multicast frame for acquiring a user scheduling request to users in a user group, the multicast frame includes a long training sequence and a spread spectrum sequence(s) allocated to all users in the user group; receiving the user scheduling request(s) fed back by a user(s) with data transmission in the user group, the user scheduling request(s) is fed back by the user(s) using at least one of the long training sequence(s) and the spread spectrum sequence(s) allocated to the user(s); scheduling user data transmission according to the user scheduling request(s). According to embodiments of the present disclosure, the delay of users with data transmission is reduced, and the quality of service for the system is improved.

Abstract: A method includes: broadcasting, by a network device, a minimum system information (MSI) message, where identification information of each SIB/system information block group in the MSI message includes an identifier of the SIB/system information block group and a type indication of the identifier, and the type indication of the identifier is used to indicate that a type of the identifier of the SIB/system information block group is an area specific system information identifier or a cell specific system information identifier. A corresponding terminal device and network device are also disclosed.

Abstract: A sub-band scheduling method, including: sending, to a base station on a source sub-band, a first message that carries information about a data attribute requirement of to-be-transmitted data, where the information about the data attribute requirement includes at least one of the following: a transmission delay, a transmission delay type, a data bandwidth requirement, or a packet loss sensitivity; receiving, on the source sub-band, a second message that carries sub-band information of a target sub-band, where the target sub-band is a sub-band that is scheduled by the base station and that meets the data attribute requirement of the to-be-transmitted data, and the sub-band information includes at least one of the following: a sub-band number, a sub-band frequency channel number, a timing advance, an uplink resource allocated by the base station, a sub-band sending power level, or a bandwidth; and transmitting data on the target sub-band according to the sub-band information.

Abstract: This application provides a method and an apparatus for obtaining system information SI. The method includes: sending, by a terminal device, a first message to a network device, where the first message includes first request information used to request first system information SI; and detecting, by the terminal device, a second message and obtaining the first SI, where the second message includes information used to respond to the request of the first request information. The terminal device may send the first request information to the network device based on an actual requirement, and detect the second message on a preset time-frequency resource.

Abstract: A random access resource allocation method and an apparatus are provided, to increase a handover success rate of a terminal device. The random access resource allocation method includes: receiving, by a target network device, a cell handover request that is sent by a source network device and that is used to request to hand over a terminal device from the source network device to the target network device, where the cell handover request includes mobility state information of the terminal device and a measurement report of the terminal device; and allocating, by the target network device, a random access resource to the terminal device based on the mobility state information and a measurement result in the measurement report.

Abstract: The present invention discloses an uplink data transmission method, a terminal device, and a network device. The method includes: sending, by a terminal device to a network device, information used to request a grant-free transmission resource; receiving, by the terminal device, resource indication information sent by the network device, where the resource indication information is used to indicate a grant-free transmission resource that is allocated by the network device to the terminal device according to the information used to request the grant-free transmission resource; and determining, by the terminal device according to the resource indication information, the transmission resource used for performing grant-free transmission. According to the uplink data transmission method, the terminal device, and the network device in embodiments of the present invention, contention-based uplink data transmission can be implemented, and data transmission efficiency of a system can be improved.

Abstract: Embodiments of the present invention provide a data transmission method and apparatus. The method includes: determining a contention transmission unit CTU to be used by to-be-sent uplink data, where the CTU is a transmission resource including at least a time domain resource, a frequency domain resource, and a code domain resource; encoding the to-be-sent uplink data by using N different code element groups in the code domain resource corresponding to the determined CTU, to obtain N groups of encoded data, where N is a positive integer greater than or equal to 2; and sending the N groups of encoded data by using the time domain and frequency domain resources that are corresponding to the determined CTU. According to the embodiments of the present invention, data reception reliability at a receive end can be improved.

Abstract: The present disclosure relates to data transmission methods and communications devices. One example communications device includes a transceiver. The transceiver is configured to send a transmission frame to a second communications device, where the second communications device acquires data information in the transmission frame, and the transmission frame includes a first part and a second part. The transceiver is configured to send the first part of the transmission frame by using a first quantity of subcarriers. The transceiver is configured to send the second part of the transmission frame by using a second quantity of subcarriers, where the first quantity is not equal to the second quantity. The transceiver is further configured to perform a next time of information transmission with the second communications device.

Abstract: A discontinuous reception method, a terminal, and a network device are provided. The method includes: obtaining, by a terminal, discontinuous reception DRX parameter information corresponding to configuration parameter information supported by the terminal; and enabling DRX by using the obtained DRX parameter information. The method is applied to a communications system, the communications system supports N groups of configuration parameters, and each group of configuration parameters is corresponding to a group of discontinuous reception DRX parameters. A DRX parameter is corresponding to a configuration parameter, and the DRX parameter is adaptively and flexibly adjusted when the configuration parameter is flexibly adjusted based on a service in a network, so that the terminal is better balanced between a latency and power consumption, and the terminal can better adapt to a communications network with a larger system capacity, a lower latency, higher network reliability, and better network availability.

Abstract: Example information transmission methods are described. In one example method, a terminal moves from coverage of a first radio access device to coverage of a second radio access device when the terminal in an inactive state. When determining that a radio access device that allocates a terminal identifier is not the second radio access device, the second radio access device notifies the terminal of a key parameter to be used, or instructs the terminal to determine a new key according to a key obtaining manner negotiated between the terminal and the first radio access device, to retransmit uplink data or transmit new uplink data.

Abstract: Embodiments of this application provide an uplink transmission control method and an apparatus. A micro base station sends an uplink resource configuration request to a macro base station, the macro base station sends, to the micro base station, an uplink resource configuration indication that is used to allocate an uplink resource to the micro base station, and then the micro base station instructs user equipment to transmit uplink information by using the uplink resource. It can be seen that, after the macro base station allocates the uplink resource to the micro base station, the micro base station may use the uplink resource to receive the uplink information transmitted by the user equipment.

Abstract: Embodiments of the present invention relate to the communications field, and provide a method and device for sending system information. The method comprises: a terminal receives a broadcast message from a network device, the broadcast message comprises indication information for an system information (SI) and wherein that the indication information is for indicating that whether the SI is being broadcasted or not, in case that the indication information indicating that the SI is not being broadcasted, the terminal sends a system information request to the network device for acquiring the SI.

Abstract: This application provides a communication method and device. The method includes: determining, by a first device, a first synchronization signal, where the first synchronization signal is used by a second device for symbol timing alignment and frequency synchronization; and sending, by the first device, the first synchronization signal on each group of subcarriers of M groups of subcarriers, where M is a positive integer greater than or equal to 2. According to the communication method in this application, the first device sends the first synchronization signal on each group of subcarriers of a plurality of groups of subcarriers, so that the second device can select, based on a reception capability of the second device, an appropriate bandwidth to receive the first synchronization signal. In this way, a device with wideband reception performance and a device with narrowband reception performance can be supported.