Abstract:
A method for determining a search space includes determining the number of downlink control information bits of each type of control channel currently required to be monitored by a UE. A temporary search space corresponding to the each type of control channel is determined according to a mapping relationship currently used by the UE. It is determined that an actual search space corresponding to a selected type of control channel is all or a part of CCEs of a union of temporary search spaces corresponding to all or a part of control channels with the same number of the downlink control information bits when the DCI bit number of one or more other control channels is the same as the DCI bit number of the selected type of control channel.
Abstract:
Embodiments of this application provide a communication method and a communication apparatus. The communication method includes: A terminal device performs blind detection on downlink control information (DCI). The terminal device determines a sending slot of a physical downlink shared channel (PDSCH) and/or a sending slot of a physical uplink shared channel (PUSCH) based on a target slot and the DCI, where the target slot is one of a plurality of slots that carry the DCI, the plurality of slots are for transmitting one piece of DCI, or each of the plurality of slots is for transmitting the same piece of DCI. In this way, when one piece of DCI is transmitted in the plurality of slots or the same piece of DCI is transmitted in each of the plurality of slots.
Abstract:
This application provides a reference signal receiving method, a reference signal sending method, and an apparatus. The reference signal receiving method includes: when a terminal device is out of a first time period, detecting, by the terminal device, a first signal, and determining, based on a detection result of the first signal, whether to use a first reference signal to perform time-frequency tracking and/or channel measurement; and receiving, by the terminal device, a second reference signal when the terminal device is in the first time period, where the first reference signal and the second reference signal are reference signals used for time-frequency tracking and/or channel measurement.
Abstract:
A communication method and a communication apparatus are provided. The method includes: A first terminal device sends data to a second terminal device over a plurality of carriers through a sidelink SL. The first terminal device determines feedback reception situations for the data on feedback reception occasions over the plurality of carriers, where the feedback reception occasion is a feedback reception occasion for the data. The first terminal device determines, based on the feedback reception situations, whether an SL radio link failure RLF occurs between the first terminal device and the second terminal device. According to this application, the SL RLF can be processed when transmission with one PC5-RRC connection is performed over the plurality of carriers.
Abstract:
A communications method and apparatus are provided. The method includes: determining one or more occasions on which a first channel is sent; and sending the first channel on the one or more occasions to at least one terminal device. The first channel carries first information. The first information includes one or more information blocks. Each information block corresponds to one of the at least one terminal device. Each information block corresponds to a different terminal device. Each information block includes one first information field set that is used to indicate information about detection performed on a second channel by a terminal device corresponding to the information block in which the first information field set is located.
Abstract:
This application relates to a communication method and device. A first terminal device receives at least one message for reserving a resource, and the first terminal device determines, from S resources based on the at least one message, M resources whose signal strengths do not meet a first signal strength threshold. The first terminal device adjusts the first signal strength threshold if M does not meet a first resource quantity or S-M does not meet a first resource quantity. The first terminal device sends a first message to a second terminal device, where the first message indicates a resource determined based on an adjusted signal strength threshold, and the adjusted signal strength threshold enables M or S-M to meet the first resource quantity.
Abstract:
A power saving method includes: sending, by a terminal device, first information to a network device, where the first information is used to indicate processing time for the terminal device to process to-be-processed information; and configuring, by the network device, a time domain resource for the to-be-processed information based on the first information, and sending second information to the terminal device, where the second information is used to indicate the time domain resource. After receiving the second information, the terminal device adjusts the foregoing processing time based on the time domain resource indicated by the second information, to relax a clock of each module corresponding to the processing time. Thereby, a terminal device power saving is implemented. In addition, the network device configures the time domain resource based on the processing time of the terminal device that is indicated by the first information.
Abstract:
The method includes: determine N1 slots based on a physical uplink shared channel, PUSCH resource, wherein the N1 slots are used to send a first redundancy version, RV of a PUSCH, and N1 is an integer greater than 1; send the 1st bit in the first RV on a second slot if the last bit in the first RV is sent on the last bit of a first slot, wherein the first slot is the (n1)th slot in the N1 slots, the second slot is the (n1+1)th slot in the N1 slots, n1=1, 2, . . . , or N1−1; and continuously send bits in the first RV if the last bit sent on the first slot is not the last bit in the first RV, wherein the last bit sent on the first slot and the 1st bit sent on the second slot are two adjacent bits in the first RV.
Abstract:
A terminal device receives discontinuous reception DRX configuration information from a network device, where the DRX configuration information includes at least configuration information of a first DRX, and the configuration information of the first DRX includes a cycle length of the first DRX; and determines, based on the DRX configuration information, to receive a downlink signal within at least first onDuration and second onDuration, where the second onDuration is next onDuration of the first onDuration, and a time interval between a start location of the first onDuration and a start location of the second onDuration is greater than the cycle length of the first DRX.
Abstract:
A method includes that a first terminal device sends a sidelink discontinuous reception (DRX) parameter of a second terminal device or indication information to a network device such that the network device determines a first time period based on the sidelink DRX parameter or the indication information, where the first time period belongs to sidelink DRX active time of the second terminal device. The first terminal device receives a sidelink grant sent by the network device, where the sidelink grant is used to indicate the first terminal device to send a resource of a physical sidelink control channel (PSCCH) and/or a physical sidelink shared channel (PSSCH), and a time domain position of the resource is in the first time period. The first terminal device sends a PSCCH and/or a PSSCH based on the sidelink grant.