Abstract: An information transmission method includes a step of receiving first downlink control information. The first downlink control information includes frequency hopping indication information of a physical uplink control channel (PUCCH) and/or transmission mode indication information of the PUCCH, or the first downlink control information is downlink control information scrambled by a first radio network temporary identifier. The method further includes performing data transmission based on the downlink control information. Based on the first downlink control information, the terminal device can perform frequency hopping to obtain a frequency diversity gain and to improve flexibility. Also transmission may be repeated to improve transmission performance, and a frequency resource may be adjusted to achieve load balancing or obtain a frequency diversity gain.

Abstract: This application provides an information transmission method and an apparatus. The information transmission method includes: A first terminal device determines a first resource based on a first reference point and a first bandwidth, where the first reference point is used to determine a location of the first resource, the first bandwidth is a size of the first resource, the size of the first resource is equal to or less than a maximum channel bandwidth supported by the first terminal device, and the first terminal device is a first-type terminal device. The first terminal device sends and/or receives information on the first resource. This resolves a problem of frequent switching of an operating frequency of a communication device in a network access process, effectively reduces power consumption of the communication device, and improves information transmission flexibility.

Abstract: This application provides a communication method and apparatus. The method is applicable to a first terminal device, and the method includes that the first terminal device receives first uplink grant information. The method further includes that the first terminal device determines a resource for uplink transmission based on a first field in the first uplink grant information, and performs uplink transmission based on the resource. The first field is used for frequency domain resource allocation indication, a length Y of the first field is less than X, where X is a pre-specified value, or X is a length of a second frequency domain resource allocation field associated with a second uplink grant format. The first terminal device does not support the second uplink grant format. Y is related to a quantity N of resource blocks supported or configured by the first terminal device.

Abstract: A communication method and apparatus are disclosed. The method in embodiments of this application is applied to a coverage enhancement scenario. The method includes: A network device may indicate, to a terminal device, whether the terminal device is allowed to access a network, and/or indicate a transmission repetition count or a coverage level of a PDCCH of the terminal device. The terminal device may perform blind detection based on an indication from the network device.

Abstract: This application discloses a physical uplink control channel sending method, a receiving method, and a communication apparatus. The method includes: A terminal device determines a first transmission manner from a plurality of transmission manners including a first non-frequency hopping transmission manner, and sends a PUCCH to a network device in the first transmission manner. The first non-frequency hopping transmission manner is: sending the PUCCH without frequency hopping in a time unit. UCI on the PUCCH includes a first part and a second part, the first part is sent by using an orthogonal sequence whose length is L1, and the second part is sent by using an orthogonal sequence whose length is L2. The UCI is divided into two parts, and is sent without frequency hopping by using orthogonal sequences with a same length or different lengths.

Abstract: This application relates to the field of wireless communication. One example method includes: A network device sends at least one piece of first information to a first terminal device, where the at least one piece of first information indicates at least one of a first access capability and first access permission. The first terminal device determines, based on the at least one piece of first information, whether the network device allows access of the first terminal device and whether the network device allows access of the second terminal device.

Abstract: This application discloses an information transmission method and a communication apparatus, to resolve the problem in the conventional technology that a resource group having one or more overlapping resource blocks cannot simultaneously transmit information of a plurality of terminal devices and results in a waste of resources. The information transmission method includes: A network device obtains first information including configuration information of a first bandwidth and/or first indication information. A terminal device determines a first parameter based on the first information. The first parameter is for determining a resource configuration parameter of a first narrowband. At least one resource in the first narrowband is included in the first bandwidth. The resource configuration parameter of the first narrowband includes at least one of a starting resource of the first narrowband, a quantity of resources included in the first narrowband, or a location of the first narrowband in the first bandwidth.

Abstract: A communication method and apparatus are provided, which relate to the field of communication technologies, to improve communication performance of a terminal device and improve resource utilization of a communication system. The method includes: a terminal device receives measurement information from a network device, where the measurement information indicates one or more measurement objects, and the measurement information includes one or more of the following: information about a measurement object of a serving cell, information about intra-frequency measurement of a neighboring cell, and information about inter-frequency measurement of a neighboring cell; and the terminal device performs, based on a reference signal associated with one or more measurement objects corresponding to a first bandwidth part (BWP), one or more of the following measurements: radio resource management (RRM) measurement, radio link monitoring (RLM) measurement, and beam failure recovery (BFR) measurement.

Abstract: A first terminal device determines a first physical random access resource, where the first terminal device is a first-type terminal device; the first terminal device sends a first random access request message on the first physical random access resource; the first terminal device receives first downlink control information DCI, where the first DCI is used to schedule a first random access response RAR. The first terminal device receives the first RAR based on the first DCI; and the first DCI and second downlink control information DCI received by a second terminal device are carried on a same physical downlink control channel PDCCH, and/or the first RAR and a second RAR scheduled by using the second DCI are carried on a same physical downlink shared channel PDSCH, where the second terminal device is a second-type terminal device.

Abstract: Embodiments of this application disclose a communication method and a communications apparatus, to be used by a terminal device to monitor a control channel on a corresponding resource, to implement communication between a network device and a terminal device of this type. A first terminal device monitors a first control channel on M REGbundles in W REGbundles or on M CCE resources corresponding to the M REGbundles. In this solution, a network device can configure a control channel resource for the first terminal device and a second terminal device, and the first terminal device and the second terminal device belong to different types of terminal devices, so that communication reliability of the first terminal device can be ensured without affecting a communication resource of the second terminal device.

Abstract: Embodiments of this application disclose a communication method and apparatus, so that a terminal device monitors a control channel on a corresponding resource applicable to a terminal device of a first capability type. This can implement communication between a network device and the terminal device of the first capability type. The network device can send a control channel for a first terminal device, and the first terminal device is distinguished from a second terminal device. This can meet requirements of different types of terminal devices for control channels. For example, the first terminal device and the second terminal device share a first control resource set. This can ensure reliability of the first terminal device while minimizing impact on an optional resource of the second terminal device.

Abstract: Embodiments of this application disclose a resource determining method and apparatus. The method includes: A terminal device receives first indication information. The first indication information indicates the terminal device to determine a frequency domain resource in a first manner, the first manner includes one of frequency domain resource switching, frequency domain resource retuning, frequency hopping, a manner A, and/or a manner B, the manner A includes the frequency domain resource switching and the frequency hopping, and the manner B includes the frequency domain resource retuning and the frequency hopping. The terminal device communicates with a network device on the determined frequency domain resource. Embodiments of this application help improve communication efficiency.

Abstract: Embodiments of this application includes: A first terminal calculates at least one of a first power headroom report (PHR) or a second power headroom report (PHR). The first PHR is a power headroom report of the first terminal on a first transmission link. The second PHR is a total power headroom report of the first terminal on the first transmission link and a second transmission link, the second transmission link is a wireless communication link between the first terminal and a network device, and frequency division multiplexing (FDM) is performed on part of transmission resources on the first transmission link and part of transmission resources on the second transmission link. The first terminal sends the at least one of the first PHR or the second PHR.

Abstract: The embodiments of this application provide a method and a device for sending and receiving control information, to flexibly adjust reliability of uplink transmission. A network device sends indication information of an uplink control channel to a terminal device. The indication information of the uplink control channel indicates at least one parameter of the following transmission parameters: a time domain length, a frequency domain length, a time domain repeat count, a frequency domain repeat count, or a transmit diversity manner. The network device receives uplink control information from the terminal device according to the indication information by using the uplink control channel.

Abstract: In the method, the network device sends first signaling to a first terminal device, the first signaling is used to instruct the first terminal device to perform, on an unlicensed spectrum, a listen before talk LBT procedure used for occupying an unlicensed frequency band, and send uplink information within a first time length on the unlicensed frequency band; the network device receives, on the unlicensed spectrum, the uplink information from the first terminal device within the first time length, where the first time length is a part of maximum channel occupancy time obtained by the first terminal device on the unlicensed spectrum, and the first time length is less than the maximum channel occupancy time.

Abstract: Embodiments of this application disclose a feedback indication method and a communications apparatus, and relate to the communications field, to unify behavior of a transmitting party and a receiving party. This ensures data transmission performance as far as possible. The method includes: A transmitting node determines a first message. A first field in the first message is set to be null, and the first field is used to indicate a time-frequency resource that carries hybrid automatic repeat request HARQ information. The transmitting node sends the first message to a receiving node. The first message is used to indicate the receiving node to delay feeding back HARQ information corresponding to a first transport block TB, or the first message is used to indicate the receiving node to give up feeding back the HARQ information corresponding to the first TB. The first TB is a transport block scheduled by the first message.

Abstract: A method includes: obtaining, by a first network device, channel state information; generating, by the first network device, channel state indication information, where the channel state indication information includes an absolute value of the channel state information or an offset value of the channel state information relative to reference channel state information; and sending, by the first network device, the channel state indication information to a second network device.

Abstract: Embodiments of this application includes: A first terminal calculates at least one of a first power headroom report (PHR) or a second power headroom report (PHR). The first PHR is a power headroom report of the first terminal on a first transmission link. The second PHR is a total power headroom report of the first terminal on the first transmission link and a second transmission link, the second transmission link is a wireless communication link between the first terminal and a network device, and frequency division multiplexing (FDM) is performed on part of transmission resources on the first transmission link and part of transmission resources on the second transmission link. The first terminal sends the at least one of the first PHR or the second PHR.

Abstract: Embodiments of this application provide a synchronization signal sending method and apparatus. The method includes: obtaining an initial synchronization sequence, where a spectrum width corresponding to the initial synchronization sequence is greater than a bandwidth of a synchronization channel and is less than a sum of the bandwidth of the synchronization channel and a system protection bandwidth; dividing the initial synchronization sequence into N sub-synchronization sequences; carrying the N sub-synchronization sequences on N time-domain symbols; and sending the N time-domain symbols to a receiving apparatus. According to the synchronization signal sending method provided in the embodiments of this application, a bandwidth loss of a synchronization signal is reduced, and utilization and synchronization performance of a system synchronization bandwidth are improved.

Abstract: In the method, the network device sends first signaling to a first terminal device, the first signaling is used to instruct the first terminal device to perform, on an unlicensed spectrum, a listen before talk LBT procedure used for occupying an unlicensed frequency band, and send uplink information within a first time length on the unlicensed frequency band; the network device receives, on the unlicensed spectrum, the uplink information from the first terminal device within the first time length, where the first time length is a part of maximum channel occupancy time obtained by the first terminal device on the unlicensed spectrum, and the first time length is less than the maximum channel occupancy time.