Abstract:
The present disclosure relates to signal transmission methods and apparatuses. One example method includes receiving resource indication information of a reference signal, determining mask information, where the mask information is used to determine one or more of the following information: mask length information, mask length set information, and mask index information, and the resource indication information and the mask information are used to determine a first physical resource, or the resource indication information and the mask information are used to determine a mapping between a sequence of the reference signal and the first physical resource, determining the first physical resource, and performing transmission of the reference signal on the first physical resource.
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 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:
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:
The present disclosure relates to information sending methods, information receiving methods, and devices. One example information sending method includes receiving, by a terminal device, a first transport block size (TBS) value from a network device, where the first TBS value is included in a second TBS set, the second TBS set includes N TBSs values, and N is a positive integer greater than 1, determining, by the terminal device, a third TBS set based on the first TBS value, where a largest TBS value in the third TBS set is less than or equal to the first TBS value, selecting, by the terminal device, a TBS value from the third TBS set, and sending uplink information based on the selected TBS value.
Abstract:
Methods, apparatus, and systems for data or information transmission are provided. In one aspect, a data sending method by a terminal device includes: determining indication information, determining, based on the indication information, a transport block size (TBS) used to send data, and sending the data based on the determined TBS. The terminal device can determine at least two of first information indicating that the TBS is a first TBS, second information indicating that the TBS is a second TBS, or third information indicating the terminal device to select a TBS from a TBS set as a third TBS used by the terminal device to send data. The TBS set is determined based on the first TBS, and can include at least one of the second TBS or the third TBS. The indication information includes one of the at least two of the first, second, or third information.
Abstract:
This application provides an uplink signal sending method and receiving method, a communications device, and a network device. The method includes: receiving, by a terminal device, downlink control information DCI sent by a network device; determining, by the terminal device based on the DCI, a transport block size TBS used for transmitting an uplink signal; and sending, by the terminal device, the uplink signal on two contiguous uplink subcarriers in a Pi/2 BPSK modulation mode based on the determined transport block size. Therefore, the uplink signal is transmitted in the Pi/2 BPSK modulation mode by using the determined transport block size.
Abstract:
Embodiments of the present disclosure provide an information transmission method and an apparatus, where the information transmission method includes: determining, by a base station, a first transmission resource; sending, by the base station, first information using the first transmission resource, where the first information includes at least one of system information or control information for scheduling system information; determining, by the base station, at least one second transmission resource; and sending, by the base station, second information to UE by using the second transmission resource, where the second information includes at least one of: a paging message, a random access response message, a contention resolution message, control information for scheduling a paging message, control information for scheduling a random access response message, or control information for scheduling a contention resolution message.
Abstract:
A channel transmission method, a base station, and a terminal device are provided. In one example method, a base station determines a communication mode to be used between the base station and a terminal device. The base station determines a transmission parameter set of a first channel according to the determined communication mode. The communication mode corresponds to the transmission parameter set of the first channel. The base station transmits information associated with the first channel to the terminal device.
Abstract:
The present application discloses a method for sending and receiving a random access preamble, and a corresponding device. A user equipment (UE) receives, from a base station, a first physical random access channel (PRACH) configuration index that is used to indicate at least two PRACH resource configurations; and selects, according to a channel characteristic value of the UE, a first PRACH resource configuration from the at least two PRACH resource configurations. The UE sends, to the base station, a random access preamble on a PRACH resource corresponding to the first PRACH resource configuration. Therefore, for UEs that have different channel characteristic values, PRACH resources corresponding to the channel characteristic values of the UEs and that are used to send random access preambles can be determined by using a same index, and thereby, PRACH resource configuration efficiency and accuracy of receiving random access preambles by the base station are improved.