Abstract: An information processing method, a terminal device, and a network device are provided. In one method, a first bit in downlink control information includes two bits, a bit status of the first bit may belong to a first state set or may be a second state, and a terminal device may perform multi-TB scheduling or single-TB scheduling based on the first bit. When the bit status of the first bit belongs to the first state set, the first state set is {01, 10, 11}, N=4, and the downlink control information includes a first field, the bit status of the first bit can be used to determine a quantity L of TBs scheduled by the downlink control information, and a bit status of five bits of the first field can be used to determine HARQ process numbers of the L TBs and NDI information of the L TBs.

Abstract: This application provides an information processing method and a communications device. An information processing method includes: a first communications device receives first information from a second communications device. The first communications device determines, based on the first information, that a start location of a first time window is a K1th time unit after a start location of a first resource or the start location of the first time window is a K2th time unit after an end location of the first resource. The first resource is a resource used by the first communications device to transmit data, and K1 and K2 are positive integers. The first communications device monitors, based on the determined start location of the first time window, control information sent by the second communications device.

Abstract: A method including: When downlink control information includes a first field, the first field includes (N+2) bits. A quantity L of TBs is determined based on the first field. When L is greater than 1, the L TBs can include both a newly transmitted TB and a retransmitted TB. In j consecutive bits in the first field, a bit state of only one bit is 1, bit states of j?1 bits are all 0, and j=N+1?L. k=0, a bit state of a bj bit in the first field is 1, and L consecutive bits in the first field, carry NDI of the L TBs; or k=L+1, a bit state of a bL bit in the first field is 1, and L consecutive bits in the first field, carry NDI information of the L TBs.

Abstract: Embodiments of this application provide a resource indication method and a communication device. The resource indication method includes: A first communication device receives first information sent by a second communication device, where the first information is used to indicate a first resource pattern and indicate a reserved resource determined by using the first resource pattern, the first resource pattern is used to determine a position corresponding to each of N resource sets, and N is a positive integer greater than or equal to 1. The first communication device determines reserved resource based on the positions corresponding to the N resource sets and indicated by the first resource pattern, where the reserved resource is a resource unavailable to the first communication device. The first communication device determines not to transmit a signal by using the reserved resource.

Abstract: Example transmission methods and apparatus are described. One example method includes receiving control information by a first communications device, where the control information schedules a plurality of transport blocks (TBs), and the control information includes redundancy version (RV) indication information. The first communications device determines a first parameter through pre-specifying, determines the first parameter by receiving physical layer signaling sent by the second communications device, or determines the first parameter by receiving higher layer signaling sent by the second communications device, where the first parameter is a parameter related to a first RV corresponding to a first TB. The first communications device determines the first RV based on the first parameter, and determines, for the first TB based on the first RV and a predetermined RV updating sequence, an RV used in a time unit other than the k time units in the time resource used for transmission of the first TB.

Abstract: The present disclosure relates to information transmission methods and communications devices. In one example method, a first communications device receives control information sent by a second communications device, where the control information is used to schedule a plurality of transport blocks (TBs). The first communications device determines a first value, where the first value is associated with one or more of a frequency hopping configuration parameter, a redundancy version (RV) change parameter, an interleaving gap parameter, and a quantity of transport blocks. The first communications device determines a first start time unit during transmission of a first TB, where the first TB is at least one of the plurality of TBs scheduled by the control information, and an index of the first start time unit is an integer multiple of the first value. The first communications device transmits the first TB based on the determined first start time unit.

Abstract: Embodiments of this application provide a communication method and device. The method includes: A first device determines first control information, where the first control information includes first indication information and second indication information, where the first indication information is used to indicate a state of preconfigured-resource transmission, and the state includes successful transmission, unsuccessful transmission, scheduling retransmission, or preconfigured-resource retransmission; and the second indication information is used to indicate whether the first device transmits first information, and the first information includes higher layer data and/or preconfigured uplink resource reconfiguration information. The first device sends the first control information to a second device.

Abstract: The present disclosure discloses example communication methods and an example communication device. One example communication method includes receiving, by a communication device and from a first network device in a first communication system, a first access parameter used to access the first communication system and a second access parameter used to access a second communication system, where a system bandwidth of the first communication system is different from a system bandwidth of the second communication system. The first communication system is switched by the communication device to the second communication system based on the second access parameter when a switching condition of switching from the first communication system to the second communication system is satisfied.

Abstract: In a data transmission method, a first communications device receives flag information. When the flag information indicates that one piece of control information can be used for scheduling of a plurality of transport blocks, the first communications device obtains transport block allocation information that indicates the number of transport blocks scheduled by the control information and a bit state corresponding to each transport block. Alternatively, when the flag information indicates that one piece of control information can be used for scheduling of only one transport block, the first communications device obtains hybrid automatic repeat request (HARQ) process number information, where the HARQ process number information indicates an HARQ process number corresponding to the transport block scheduled by the control information. The first communications device sends data or receives data based on the information.

Abstract: A communication method includes: a first device determines first control information, where the first control information carries first information, and the first information is used to indicate emergency information; and the first control information is format-3 control information, format-3A control information, format-6-0A control information, format-6-0B control information, format-6-1A control information, or format-6-1B control information; the first device sends the first control information to a second device; and the first device sends the emergency information to the second device. The method expands coverage of a network, and may be applied to an internet of things (IoT), for example, machine type communication (MTC), a long term evolution-machine (LTE-M), or machine-to-machine (M2M).

Abstract: This application relates to a communication method and a communications device. The communication method includes: determining, a first signal to be sent on a first uplink carrier; determining a second signal to be sent on a second uplink carrier, where the first uplink carrier corresponds to a first radio access technology, and the second uplink carrier corresponds to a second radio access technology; and when a first transmission timing corresponding to the first signal is different from a second transmission timing corresponding to the second signal, and if the first signal and the second signal overlap in time domain, sending, a third signal, where the third signal is the second signal, or is the second signal or a part of the first signal, where the part of the first signal is carried on a symbol that does not overlap with a symbol corresponding the second signal.

Abstract: Embodiments of this application provide a maximum transmission power determining method, an apparatus, a system, and a storage medium. A network device configures, for a terminal device that works in a DC mode but does not support dynamic power sharing, power information corresponding to a first time unit and power information corresponding to a second time unit when a first radio access technology is used, and correspondingly, the terminal device determines maximum transmission power corresponding to the first time unit and maximum transmission power corresponding to the second time unit.

Abstract: A communication method and device, the method including determining, by a terminal device, first information and second information, where the first information is associated with a validity of a timing advance (TA), determining, by the terminal device, N TA verification criteria based on the second information, where N is an integer greater than or equal to 1, and where each TA verification criterion of the N TA verification criteria is associated with the respective TA verification criterion holding true when a specified condition is met, and determining, by the terminal device, the validity of the TA based on the first information and the N TA verification criteria.

Abstract: A data transmission method, including a first communications device receives control information sent by a second communications device, where the control information is used to schedule L transport blocks, M transport blocks in the L transport blocks scheduled by using the control information are retransmitted, and M is a value in a first value set, or H transport blocks in the L transport blocks scheduled by using the control information are retransmitted, and H is a value in a second value set associated with the quantity L of transport blocks, or L HARQ process indexes corresponding to the L transport blocks are consecutive, and the first communications device determines, based on the control information, whether the transport blocks scheduled by using the control information are newly transmitted or retransmitted, and sends or receives the transport blocks based on the scheduling with the control information.

Abstract: A communication method includes determining, by a network device, a first signal. The first signal includes a primary synchronization signal PSS, a secondary synchronization signal SSS, and a first physical broadcast channel PBCH. A frequency domain bandwidth occupied by the PSS, the SSS, and the first PBCH is less than 240 subcarriers. The PSS, the SSS, and the first PBCH are mapped to different time-domain symbols. The method also includes sending, by the network device, the first signal.

Abstract: An uplink signal transmission method includes: sending, by a terminal device, an uplink signal to a network device in response to determining that a first variation meets a timing advance (TA) update condition, where the first variation indicates a quality change value of a downlink signal received by the terminal device; receiving, by the terminal device, first information from the network device; and in response to determining that the first information includes TA information, adjusting, by the terminal device, an uplink transmission time based on the TA information.

Abstract: Embodiments of this application disclose a data transmission method, a control information sending method, and a device, and relate to the field of communications technologies. The method may include: determining, by the communications device, a first resource used for receiving or sending data; receiving control information, where the control information includes first indication information that can be used to indicate that a resource is punctured or postponed, and where the first indication information is used to indicate that a second resource is punctured or postponed; and determining, by the communications device, a third resource based on the first indication information and the first resource, and receiving or sending the data by using the third resource.

Abstract: Embodiments of this application provide a signal transmission method and a communications apparatus. The method includes: a terminal device receives information from a network device, wherein the information is used to indicate the terminal device to send a signal in a fallback transmission mode; the terminal device determines that transmission of the signal is failed; and then sends the signal to the network device in the fallback transmission mode.

Abstract: A reference signal sending method, a reference signal receiving method, and an apparatus are provided. A first network device determines a first resource. The first network device generates a reference signal corresponding to the first resource. The reference signal includes M parts, and all of the M parts are the same. The first resource does not carry a cyclic postfix of the reference signal. Alternatively, the first resource carries a cyclic prefix of the reference signal and the cyclic prefix corresponding to the reference signal is located only at the start of the 1st part in the M parts. M is a positive integer. The first network device sends the reference signal to a second network device on the first resource.

Abstract: Example resource allocation methods and apparatus are described. One example method includes that a terminal device receives downlink control information sent by a network device, where the downlink control information includes a resource allocation field, the resource allocation field includes formula (I)+5 bits. The terminal device determines the first resource indication value, and determines, based on the first resource indication value, a starting resource block allocated in the uplink bandwidth and a length LCRBs of consecutive resource blocks allocated in the uplink bandwidth, where M?LCRBs?6, and M is a positive integer greater than 1. The terminal device sends data on resources corresponding to the starting resource block and the length of the consecutive resource blocks. The methods and the devices provided in the embodiments of this application may be used in a communications system, for example, V2X, LTE-V, V2V, the Internet of Vehicles, MTC, LTE-M, M2M, or the Internet of Things.