Abstract: A method includes: performing, by a terminal device, data transmission based on a configuration parameter of a currently activated first bandwidth part BWP, where the configuration parameter of the first BWP includes at least one of a first resource offset, a first bandwidth, and a first subcarrier spacing; determining, by the terminal device, a first random access resource and a second configuration parameter for random access, where the second configuration parameter includes at least one of a second resource offset, a second bandwidth, and a second subcarrier spacing; sending, by the terminal device, a random access request to the network device on the first random access resource; and receiving, by the terminal device, a random access response based on the second configuration parameter, where the random access response is sent by the network device based on the random access request.

Abstract: A method for handling a radio link failure (RLF) is described. The method includes sending, by a terminal device, duplicated data packets to a network device on a first carrier and a second carrier. Thereafter, upon determining that an RLF occurred on one of the first carrier and the second carrier, the terminal device sends RLF indication information to the network device. The RLF indication information indicates that the RLF event occurs on the first carrier, the second carrier, or the first carrier and the second carrier.

Abstract: Provided are a system for implementing multiple Radio Access Networks (RANs) convergence and a method thereof. The method includes: an anchor RAN establishes a connection with a User Equipment (UE); the anchor receives a RAB establishment request from a Core Network (CN); the anchor RAN selects an auxiliary RAN; the anchor RAN sends quality of service (QoS) parameters to the auxiliary RAN, so that the auxiliary RAN establishes a connection with the UE according to the QoS parameters, while the anchor RAN keep the connection with the UE. With the methods provided in embodiments for the present disclosure, multiple RANs convergence is implemented, and the UE establishes connections with the anchor RAN and the auxiliary RAN at the same time, so as to improve the peak rate of the UE.

Abstract: A coordinated transmission control method, apparatus, and system. A primary access point and a secondary access point determine whether to perform coordinated transmission through inter-cell configuration parameter sharing and based on a dual decision condition of an interference test. An anti-interference beamforming manner is determined based on a specific cell configuration parameter, and whether to perform coordinated transmission is determined with reference to the dual decision condition of the interference test, wherein the primary and secondary access points learn an interference status in advance to prevent unnecessary retransmission resulting from interference caused during actual coordinated transmission.

Abstract: This application provides example communication methods and apparatuses. In one example method applied to an first access network device, the method comprises receiving a first data packet of a first session from a core network device, where the first data packet comprises a first sequence number (SN). A second data packet is sent to a terminal device, where the second data packet belongs to data of a first data radio bearer (DRB), the second data packet comprises a packet data convergence protocol (PDCP) protocol data unit (PDU), the PDCP PDU is obtained based on the first data packet, and a PDCP SN of the PDCP PDU is determined based on the first SN.

Abstract: The present invention discloses a communication method and an apparatus. One example method includes: sending feedback information to a network device, where downlink control information (DCI) for scheduling the first data packet is scrambled by group radio network temporary identifier (G-RNTI); receiving a second information, where the second information comprises a discontinuous reception (DRX) configuration information corresponding to a first unicast service, the DRX configuration information corresponding to the first unicast service comprises duration of a second downlink HARQ RTT timer and duration of a second downlink DRX retransmission timer; starting the second downlink HARQ RTT timer at a first moment after an end of sending the feedback information; monitoring, based on DRX configuration information, a Physical Downlink Control Channel (PDCCH) for scheduling information of a data packet of the first multicast service, where the scheduling information is scrambled by the C-RNTI.

Abstract: Disclosed are a signaling optimization method and device, to resolve a problem of heavy signaling overheads and long data transmission delay when a user equipment (UE) accesses a network side. The method includes: receiving, by the UE, configuration information sent by a first network side device, where the configuration information includes a list, and the list is a cell list or a base station list; and entering, by the UE, an intermediate state according to the configuration information, where the intermediate state means that: when the UE stores context information of the UE, if the UE moves and a cell movement range falls within a coverage area of a cell or a base station included in the list, the UE performs cell reselection according to the list. Embodiments of the present disclosure are applicable to optimization of signaling transmission between the UE and a network side.

Abstract: A communication method and apparatus, so that a terminal device can flexibly determine, based on at least one of an identifier of a multicast service, a probability of each multicast configuration information obtaining manner, level information of the terminal device, indication information of an obtaining manner of multicast configuration information, information used to indicate that data of the multicast service is to be sent, or signal quality information, a manner for obtaining multicast configuration information of each multicast service, instead of obtaining configuration information of different multicast services in a fixed manner.

Abstract: Embodiments of the present application provide a paging method, applied to a wireless communications system. When downlink data to a terminal reaches a first access network device from a core network, the first access network device is triggered to determine a paging parameter of the terminal, and to send, based on the paging parameter, a paging message to the terminal through the first access network device or a second access network device.

Abstract: A user equipment obtains configuration information used to detect a received signal strength indicator (RSSI) value of a signal on an unlicensed frequency, samples the signal on the unlicensed frequency at a sampling interval included in the configuration information to obtain RSSI values of the signal on the unlicensed frequency sampled at sampling moments. The user equipment determines statistics on the RSSI values of the signal on the unlicensed frequency within a statistical window, obtains an RSSI value statistical result of the signal on the unlicensed frequency based on the statistics, and reports the RSSI value statistical result to a base station.

Abstract: The present invention provides an uplink reference signal sending method, and the method includes: sending, by a terminal device, an uplink reference signal on N1 second component carriers within a determined uplink reference signal sending time, and prohibiting, on M1 first component carriers in M first component carriers within the sending time, the terminal device from sending an uplink signal, where the first component carriers are carriers on which scheduling of uplink data transmission is allowed, and the second component carriers are carriers on which scheduling of uplink data transmission is prohibited. N1=M1, in other words, within the sending time, a quantity N1 of second component carriers on which the uplink reference signal is sent is less than or equal to a quantity M1 of first component carriers on which sending of the uplink signal is prohibited.

Abstract: Embodiments of the present invention provide a communication method and apparatus. A network device determines, based on first capability information, a bandwidth part supported by a first terminal device, and sends a first paging message on a target bandwidth part, where the bandwidth part is used to carry paging or another message. The target bandwidth part matches the bandwidth part supported by the first terminal device. Therefore, compared with attempting to send the first paging message by the network device on a plurality of bandwidth parts, sending the first paging message on the target bandwidth part can effectively reduce a quantity of times of unnecessary paging sending by the network device, so as to reduce a quantity of wasted paging resources. This can effectively reduce a quantity of times of unnecessary listening of the first terminal device, reduce energy consumption of the terminal device, and improve paging efficiency.

Abstract: A data transmission method and an apparatus are provided. The method includes: determining, by a base station, a time-domain interval of available time-frequency resources in an unlicensed spectrum, where the available time-frequency resources are continuous time-frequency resources in a time domain; sending, by the base station, a preamble signal in a first subframe in the interval, where the first subframe is an initial subframe in the interval; and sending, by the base station, downlink control information and data after sending the preamble signal, where the data is in the first subframe, the downlink control information includes scheduling indication information, and the scheduling indication information is used to indicate a frequency-domain location of the data. According to the present invention, spectrum utilization can be improved.

Abstract: A communication method includes receiving, by a terminal device, first indication information. The first indication information is useable to indicate to the terminal device to disable a feedback function corresponding to a multimedia broadcast multicast service. The method further comprises disabling, by the terminal device, the feedback function corresponding to the multimedia broadcast multicast service.

Abstract: A transmission parameter obtaining method includes obtaining, by a terminal device, a transmission parameter of a network device, wherein the transmission parameter indicates location information of the network device. The method also includes determining, by the terminal device, at least one of an intra-frequency cell-reselection measurement threshold or an inter-frequency cell-reselection measurement threshold based on the transmission parameter. The method further includes determining, by the terminal device, a radio link failure threshold based on the transmission parameter. The method additionally includes determining, by the terminal device, at least one of an intra-frequency connected-state measurement threshold or an inter-frequency connected-state measurement threshold based on the transmission parameter.

Abstract: A method includes a first access network device that sends first indication information to a second access network device. The first indication information indicates information about a current active BWP and/or transmission rate information of a terminal device on the first access network device. The second access network device determines information about a first-time active BWP and/or BWP configuration information of the terminal device on the second access network device based on the first indication information. The method may be used to enable the second access network device to determine the appropriate information about the first-time active BWP and/or the appropriate BWP configuration information of the terminal device on the second access network device. In this way, service interruption caused by switching of an active BWP is reduced, and/or service interruption caused by changing of a BWP configuration is reduced.

Abstract: A communication method and a communication apparatus. A central unit determines a first transmission mode of a first service, where the first transmission mode is a point-to-point transmission mode or a point-to-multipoint transmission mode. The central unit indicates a distributed unit to transmit a first data packet of the first service in the first transmission mode.

Abstract: This application provides a data processing method and apparatus, and a computer storage medium. When a PDCP entity over a UM DRB is re-established, or when a cell handover occurs and the PDCP entity over a UM DRB uses a key used before the handover, the PDCP entity determines a first SDU, where the first SDU is an SDU that is associated with a sequence number by the PDCP entity but whose corresponding data has not been transmitted through an air interface; and delivers a PDU corresponding to the first SDU to an RLC entity. Data corresponding to the first SDU is redelivered, to avoid a data packet loss caused by preprocessing of the PDCP entity.

Abstract: A communication method and apparatus is provided. The method includes: camping on a first cell by a terminal device. The method further includes: determining, by the terminal device, to access a second cell in response to: receiving a paging message from the first cell, determining that there is to-be-transmitted uplink information, or determining that there is a to-be-transmitted non-multicast service. A frequency of the first cell is different from a frequency of the second cell. The terminal device may not perform uplink transmission or may receive only a multicast service in the first cell so that energy consumption of cell measurement and beam selection is reduced. In addition, resource utilization of a communication system can be improved through flexible deployment.

Abstract: A method to resolve a problem of resource waste caused by a communication device listening to, on all listening occasions, information scrambled by using a first radio network temporary identifier RNTI. A network device determines a mapping period of a first RNTI, where in the mapping period, a beam and a listening occasion form a mapping relationship, so that the network device sends, to a terminal device on a target listening occasion by using a target beam, information scrambled by using the first RNTI. The terminal device receives, on the target listening occasion by using the target beam, the information scrambled by using the first RNTI.