Communication method and terminal device, network device

Abstract

The application provides a communication method, comprising: receiving first indication information on a first time domain resource and a first part bandwidth BWP, the first indication information indicating switching to a second BWP and indicating receiving or sending a first data channel on a second time domain resource, the frequency domain position and bandwidth of the first BWP being the same as the frequency domain position and bandwidth of the second BWP; receiving or sending a target signal on the frequency domain resource corresponding to the first BWP or the second BWP on the time domain resource after the end of the first time domain resource and before the start of the time slot where the second time domain resource is located. The application provides a communication method, a terminal device and a network device, aiming to reduce the signal and data transmission delay and improve the channel resource utilization.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of communication, and more particularly, to a communication method and a terminal device and a network device. BACKGROUND

[0002] To improve the transmission rate, the network device can configure multiple bandwidth parts (BWPs) for the terminal device through radio resource control (RRC) signaling. A BWP is a part of continuous frequency domain resources on a carrier, and a resource block is usually taken as the minimum frequency domain unit. The network device can instruct the terminal device to switch between multiple BWPs through downlink control information (DCI). The network device can also instruct the terminal device to transmit data received on a physical downlink shared channel (PDSCH) or send data on a physical uplink shared channel (PUSCH) through DCI.

[0003] The terminal device needs a certain switching delay to perform BWP switching, and the terminal device can not perform signal transmission and reception within the switching delay. However, when the frequency domain location and bandwidth, subcarrier spacing, and other configuration parameters of the two BWPs before and after switching are the same, the actual switching delay required by the terminal device is short, or 0; when the frequency domain location and bandwidth configuration parameters of the two BWPs before and after switching are different, the actual switching delay required by the terminal device is long. In order to ensure normal signal transmission and reception, it is usually agreed that no signal transmission and reception is performed before receiving or sending data scheduled by DCI used to indicate BWP switching. This means that even if the terminal device has completed switching, the terminal device cannot perform signal transmission and reception as long as the interruption time has not been reached. Therefore, the flexibility of this switching scheme is poor. SUMMARY

[0004] The present application provides a communication method and a terminal device and a network device, which can provide a flexible signal transmission and reception mode.

[0005] In a first aspect, a communication method is provided, comprising: receiving, on a first time domain resource, a first bandwidth part (BWP), first indication information, the first indication information indicating switching to a second BWP and indicating receiving or transmitting a first data channel on a second time domain resource, a frequency domain location and a bandwidth of the first BWP being the same as a frequency domain location and a bandwidth of the second BWP; after the first time domain resource ends and before a time slot where the second time domain resource is located starts, receiving or transmitting a target signal on a frequency domain resource corresponding to the first BWP or the second BWP on a time domain resource.

[0006] When the network device determines that the frequency domain location and the bandwidth of the first BWP are the same as the frequency domain location and the bandwidth of the second BWP, it can be considered that the terminal device transmits or receives the target signal before receiving the first data channel, thereby avoiding wasting of signaling resources. Correspondingly, when the terminal device determines that the frequency domain location and the bandwidth of the first BWP are the same as the frequency domain location and the bandwidth of the second BWP, it can continue to receive or transmit the target signal on the new BWP before receiving or transmitting the first data channel, thereby avoiding wasting of signaling resources and avoiding introducing additional data transmission delay. Since the network device and the terminal device can use the time domain resource after the first time domain resource ends and before the time slot where the second time domain resource is located starts to transceive the signal, the transceiving manner is more flexible. Optionally, the first indication information is received on a first time domain resource, a first bandwidth part (BWP), the first indication information indicating switching to a second BWP and indicating a time slot offset of a second time domain resource of the first data channel from the first time domain resource, a frequency domain location and a bandwidth of the first BWP being the same as a frequency domain location and a bandwidth of the second BWP; after the first time domain resource ends and before a time slot indicated by the time slot offset starts, a target signal is received or transmitted on a frequency domain resource corresponding to the first BWP or the second BWP on a time domain resource.

[0007] Optionally, the frequency domain location and the bandwidth, the subcarrier spacing, and the cyclic prefix corresponding to the first BWP are the same as the frequency domain location and the bandwidth, the subcarrier spacing, and the cyclic prefix corresponding to the second BWP.

[0008] Since the frequency domain resource corresponding to the first BWP is the same as the frequency domain resource corresponding to the second BWP, even if the terminal device receives or transmits the target signal on the second BWP, it can be described as receiving or transmitting the target signal on the frequency domain resource corresponding to the first BWP in addition to receiving or transmitting the target signal on the frequency domain resource corresponding to the second BWP. Similarly, even if the terminal device receives or transmits the target signal on the first BWP, it can be described as receiving or transmitting the target signal on the frequency domain resource corresponding to the second BWP in addition to receiving or transmitting the target signal on the frequency domain resource corresponding to the first BWP.

[0009] The frequency domain location and bandwidth of the first BWP are the same as those of the second BWP, but the identity (ID) of the first BWP is different from that of the second BWP. The first indication information can include an index of the second BWP, and the terminal device can determine whether the index of the currently used first BWP is the same as that of the second BWP. If they are the same, the terminal device can determine not to perform BWP switching; if they are different, the terminal device can determine to perform switching from the first BWP to the second BWP.

[0010] The reception of the target signal may, for example, be of a physical downlink control channel (PDCCH) and / or a physical downlink shared channel (PDSCH) and / or a channel state information reference signal (CSI-RS), and the transmission of the target signal may, for example, be of one or more of a physical uplink control channel (PUCCH) and / or a physical uplink shared channel (PUSCH) and / or a sounding reference signal (SRS).

[0011] With reference to the first aspect, in some implementations of the first aspect, the receiving or transmitting the target signal on the frequency domain resource corresponding to the first BWP or the second BWP after the end of the first time domain resource and before the start of the time slot in which the second time domain resource is located comprises: receiving or transmitting the target signal on the frequency domain resource corresponding to the first BWP or the second BWP after a target time and before the start of the time slot in which the second time domain resource is located, the target time being located after the end of the first time domain resource and before the start of the time slot in which the second time domain resource is located.

[0012] The target time may, for example, be an end time of an agreed BWP switching delay.

[0013] Optionally, the method further comprises: determining the target time according to configuration parameters of the first BWP and the second BWP.

[0014] In one example, the terminal device or the network device can determine the target time according to the degree of similarity between the configuration parameters of the first BWP and the configuration parameters of the second BWP.

[0015] In an example, the terminal device or the network device can determine the target time according to a type of the same configuration parameter in the first BWP and the second BWP.

[0016] Optionally, the method further includes determining the agreed BWP switching delay according to the configuration parameter of the first BWP and the configuration parameter of the second BWP.

[0017] In an example, the terminal device or the network device can adjust the agreed BWP switching delay according to a similarity degree of the configuration parameter of the first BWP and the configuration parameter of the second BWP.

[0018] In an example, the terminal device or the network device can determine the agreed BWP switching delay according to a type of the same configuration parameter in the first BWP and the second BWP.

[0019] In the embodiments of the present application, the network device indicates the terminal device to perform BWP switching through the first indication information, fully utilizes the signaling resources without causing signaling loss, and agrees with the terminal device that no signal reception and transmission is performed before the target time and the signal reception and transmission can be performed after the target time. Therefore, sufficient time can be reserved for the terminal device for BWP switching without causing significant waste of signaling resources.

[0020] With reference to the first aspect, in some implementations of the first aspect, the first BWP corresponds to the same number of receiving antennas as the second BWP, and / or the first BWP corresponds to the same number of multiple-input multiple-output (MIMO) transmission layers as the second BWP.

[0021] Optionally, in a case where the frequency domain location and bandwidth, subcarrier spacing, and cyclic prefix corresponding to the first BWP are the same as the frequency domain location and bandwidth, subcarrier spacing, and cyclic prefix corresponding to the second BWP, the actual / agreed BWP switching delay is zero.

[0022] That is, the first BWP and the second BWP are both not associated with the number of receiving antennas and / or the number of MIMO transmission layers, and in a case where the frequency domain location and bandwidth, subcarrier spacing, and cyclic prefix corresponding to the first BWP are the same as the frequency domain location and bandwidth, subcarrier spacing, and cyclic prefix corresponding to the second BWP, the actual / agreed BWP switching delay is zero.

[0023] Optionally, the first BWP and the second BWP are both associated with a number of receiving antennas and / or a number of MIMO transmission layers. Further optionally, in a case that the number of receiving antennas corresponding to the first BWP is the same as the number of receiving antennas corresponding to the second BWP, and / or the number of MIMO transmission layers corresponding to the first BWP is the same as the number of MIMO transmission layers corresponding to the second BWP, the agreed BWP switching delay is zero.

[0024] In one example, in a case that the frequency domain location and bandwidth corresponding to the first BWP are the same as the frequency domain location and bandwidth corresponding to the second BWP, and the number of receiving antennas corresponding to the first BWP is the same as the number of receiving antennas corresponding to the second BWP, the agreed BWP switching delay is zero.

[0025] In one example, in a case that the frequency domain location and bandwidth corresponding to the first BWP are the same as the frequency domain location and bandwidth corresponding to the second BWP, and the number of MIMO transmission layers corresponding to the first BWP is the same as the number of MIMO transmission layers corresponding to the second BWP, the agreed BWP switching delay is zero.

[0026] In one example, in a case that the frequency domain location and bandwidth corresponding to the first BWP are the same as the frequency domain location and bandwidth corresponding to the second BWP, the number of receiving antennas corresponding to the first BWP is the same as the number of receiving antennas corresponding to the second BWP, and the number of MIMO transmission layers corresponding to the first BWP is the same as the number of MIMO transmission layers corresponding to the second BWP, the agreed BWP switching delay is zero.

[0027] If the frequency domain location and bandwidth corresponding to the first BWP are the same as the frequency domain location and bandwidth corresponding to the second BWP, and the number of receiving antennas corresponding to the first BWP is different from the number of receiving antennas corresponding to the second BWP, the agreed BWP switching delay is not zero but can take a smaller value.

[0028] Similarly, if the frequency domain location and bandwidth corresponding to the first BWP are the same as the frequency domain location and bandwidth corresponding to the second BWP, and the number of MIMO transmission layers corresponding to the first BWP is different from the number of MIMO transmission layers corresponding to the second BWP, the agreed BWP switching delay is not zero but can take a smaller value.

[0029] In the embodiments of the present application, since the first BWP is the same as or almost the same as the second BWP, the terminal device almost or completely does not need to spend time to complete the BWP switching, in this case, the network device and the terminal device can determine the agreed BWP switching delay to be zero according to the configuration parameters corresponding to the first BWP and the configuration parameters corresponding to the second BWP. Therefore, the terminal device and the network device can make full use of the time-frequency resources before and after the BWP switching.

[0030] With reference to the first aspect, in some implementations of the first aspect, before the receiving the first indication information on the first time domain resource and on the first partial bandwidth BWP, the method further includes: receiving first radio resource control information, the first radio resource control information containing target BWP configuration parameters, the target BWP configuration parameters being used to indicate first configuration parameters of the first BWP and second configuration parameters of the second BWP.

[0031] In the embodiments of the present application, the first BWP and the second BWP can share or use the target BWP configuration parameters, thereby saving the signaling overhead of the radio resource control information.

[0032] With reference to the first aspect, in some implementations of the first aspect, the method further includes: determining that the target time slot offset lower limit is a time slot offset lower limit corresponding to the second BWP.

[0033] In the present application, the target time slot offset lower limit can be understood as a target time slot offset lower limit used by the terminal device subsequently, that is, the terminal device determines the target time slot offset lower limit, thereby correcting the currently used time slot offset lower limit.

[0034] In the embodiments of the present application, in the case where the radio resource control information is configured with a BWP-unrelated time slot offset lower limit, it is agreed that the time slot offset lower limit corresponding to the new BWP is used after switching to the new BWP, which is beneficial to switching the time slot offset lower limit value to the time slot offset lower limit value corresponding to the power saving mode (also referred to as cross-slot scheduling) using the new BWP, instead of the time slot offset lower limit value corresponding to the power consumption mode (also referred to as intra-slot scheduling) with data scheduling.

[0035] With reference to the first aspect, in some implementations of the first aspect, before the receiving the first indication information on the first time domain resource and on the first partial bandwidth BWP, the method further includes: receiving second radio resource control information, the second radio resource control information containing a plurality of time slot offset lower limits and a plurality of indexes corresponding to the plurality of time slot offset lower limits; in the case where the first indication information further includes information indicating a target index, the method further includes: determining that the target time slot offset lower limit is a time slot offset lower limit corresponding to the target index, the target index being one of the plurality of indexes.

[0036] In the embodiment of the present application, in the case where the radio resource control information is configured with the index of the BWP-independent slot offset lower limit, it is agreed that the slot offset lower limit corresponding to the target index indicated by the first indication information is used after switching to the new BWP, which is beneficial to switching the slot offset lower limit value to the slot offset lower limit value corresponding to the power saving mode (also known as cross-slot scheduling) using the new BWP, instead of having data scheduling, i.e., switching to the slot offset lower limit value corresponding to the power consumption mode (also known as same-slot scheduling), and the dynamic indication of the slot offset lower limit has stronger flexibility.

[0037] In a second aspect, a communication method is provided, including: obtaining a first slot offset lower limit indicated by third radio resource control information; receiving second indication information, the second indication information indicating scheduling information of a second data channel; in the case where the second indication information further indicates switching to a third BWP, determining a target slot offset lower limit as a slot offset lower limit corresponding to the third BWP; otherwise, determining the target slot offset lower limit as the first slot offset lower limit.

[0038] The slot offset lower limit can be one of a downlink slot offset lower limit and an uplink slot offset lower limit.

[0039] In the embodiment of the present application, in the case where the radio resource control information is configured with the slot offset lower limit corresponding to the BWP, it is agreed that the slot offset lower limit corresponding to the new BWP is used after switching to the new BWP, instead of the BWP-independent slot offset lower limit, so that the terminal device can determine that the target slot offset lower limit is the slot offset lower limit corresponding to the new BWP, and signaling transmission and reception failure caused by indication information conflict can be avoided.

[0040] For example, the slot offset lower limit corresponding to the new BWP corresponds to the slot offset lower limit in the power saving mode, and in the case where the second indication information further indicates switching to the new BWP, it is beneficial to switch the slot offset lower limit value to the slot offset lower limit value corresponding to the power saving mode (also known as cross-slot scheduling) using the new BWP, instead of having data scheduling, i.e., switching to the slot offset lower limit value corresponding to the power consumption mode (also known as same-slot scheduling).

[0041] In combination with the second aspect, in some implementation manners of the second aspect, the slot offset lower limit corresponding to the third BWP is the minimum slot offset in a time domain resource allocation list on the third BWP.

[0042] In the embodiment of the present application, the slot offset lower limit corresponding to the BWP can not be indicated by separate signaling, but can be calculated according to the time domain resource allocation list in the configuration parameter of the BWP, thereby reducing signaling overhead.

[0043] With reference to the second aspect, in some implementations of the second aspect, the obtaining the first time slot offset lower limit indicated by the third radio resource control information comprises: obtaining the first time slot offset lower limit and a second time slot offset lower limit indicated by the third radio resource control information, the first time slot offset lower limit being smaller than the second time slot offset lower limit.

[0044] In the embodiments of the present application, the first time slot offset lower limit corresponds to a time slot offset lower limit with higher power consumption and shorter time delay, and the second time slot offset lower limit corresponds to a time slot offset lower limit with lower power consumption and longer time delay. After detecting the indication information, the terminal device switches the target time slot offset lower limit to the time slot offset lower limit corresponding to shorter time delay, which is beneficial to improve the signal receiving time delay and improve the data transceiving rate.

[0045] Optionally, the method further comprises: starting a timer, and in a case where the timer stops timing, the target time slot offset lower limit is a time slot offset lower limit corresponding to the third BWP.

[0046] In a third aspect, a communication method is provided, comprising: receiving fourth radio resource control information, the fourth radio resource control information containing a plurality of time slot offset lower limits and a plurality of indexes corresponding one-to-one to the plurality of time slot offset lower limits; receiving third indication information, the third indication information including information indicating switching to a fourth BWP; in a case where the third indication information further includes information indicating a target index, determining that a target time slot offset lower limit is a time slot offset lower limit corresponding to the target index, the target index being one of the plurality of indexes; otherwise, determining that the target time slot offset lower limit is a time slot offset lower limit corresponding to the fourth BWP.

[0047] In the embodiments of the present application, in a case where the radio resource control information is configured with indexes of time slot offset lower limits irrelevant to BWP, it is agreed that after switching to a new BWP, a time slot offset lower limit corresponding to a target index indicated by third indication information is used instead of a time slot offset lower limit corresponding to the BWP, so that the terminal device will not fail in signaling transceiving due to indication information conflict.

[0048] For example, the time slot offset lower limit corresponding to the target index corresponds to a time slot offset lower limit in a short time delay mode, and in a case where the third indication information further indicates the target index, it is beneficial to switch the time slot offset lower limit value to a time slot offset lower limit value corresponding to the short time delay mode using the new BWP instead of a time slot offset lower limit value corresponding to the long time delay mode, which is beneficial to improve the signaling transceiving efficiency. Moreover, the dynamic indication of the time slot offset lower limit has stronger flexibility.

[0049] Optionally, the method further comprises: starting a timer, and in a case where the timer stops timing, the target time slot offset lower limit is a time slot offset lower limit corresponding to the fourth BWP.

[0050] In a fourth aspect, a communication method is provided, including: transmitting first indication information on a first time domain resource and on a first bandwidth BWP, the first indication information indicating switching to a second BWP and indicating receiving or transmitting a first data channel on a second time domain resource, a frequency domain location and a bandwidth of the first BWP being the same as a frequency domain location and a bandwidth of the second BWP; receiving or transmitting a target signal on a frequency domain resource corresponding to the first BWP or the second BWP on a time domain resource after the first time domain resource ends and before a time slot where the second time domain resource is located starts.

[0051] With reference to the fourth aspect, in some implementations of the fourth aspect, the receiving or transmitting the target signal on the frequency domain resource corresponding to the first BWP or the second BWP on the time domain resource after the first time domain resource ends and before the time slot where the second time domain resource is located starts includes: receiving or transmitting the target signal on the frequency domain resource corresponding to the first BWP or the second BWP on a time domain resource after a target time and before the time slot where the second time domain resource is located starts, the target time being located after the first time domain resource ends and before the time slot where the second time domain resource is located starts.

[0052] With reference to the fourth aspect, in some implementations of the fourth aspect, a number of receiving antennas corresponding to the first BWP is the same as a number of receiving antennas corresponding to the second BWP, and / or a number of multiple-input multiple-output (MIMO) transmission layers corresponding to the first BWP is the same as a number of MIMO transmission layers corresponding to the second BWP.

[0053] With reference to the fourth aspect, in some implementations of the fourth aspect, before the receiving the first indication information on the first time domain resource and on the first bandwidth BWP, the method further includes: transmitting first radio resource control information, the first radio resource control information containing target BWP configuration parameters, the target BWP configuration parameters being used to indicate first configuration parameters of the first BWP and second configuration parameters of the second BWP.

[0054] With reference to the fourth aspect, in some implementations of the fourth aspect, the method further includes: determining a target time slot offset lower limit as a time slot offset lower limit corresponding to the second BWP.

[0055] In some implementations of the fourth aspect, before the receiving the first indication information on the first time domain resource on the first part of bandwidth BWP, the method further includes: transmitting second radio resource control information, the second radio resource control information containing a plurality of time slot offset lower limits and a plurality of indexes corresponding to the plurality of time slot offset lower limits; in a case that the first indication information further includes information indicating a target index, the method further includes: determining a target time slot offset lower limit as a time slot offset lower limit corresponding to the target index, the target index being one of the plurality of indexes.

[0056] In the fifth aspect, a communication method is provided, including: transmitting third radio resource control information used for indicating a first time slot offset lower limit; transmitting second indication information, the second indication information indicating scheduling information of a second data channel; in a case that the second indication information further indicates switching to a third BWP, determining a target time slot offset lower limit as a time slot offset lower limit corresponding to the third BWP; otherwise, determining the target time slot offset lower limit as the first time slot offset lower limit.

[0057] In some implementations of the fifth aspect, the time slot offset lower limit corresponding to the third BWP is a minimum time slot offset in a time domain resource allocation list on the third BWP.

[0058] In some implementations of the fifth aspect, the third radio resource control information is further used for indicating a second time slot offset lower limit, the first time slot offset lower limit being smaller than the second time slot offset lower limit.

[0059] In the sixth aspect, a communication method is provided, including: transmitting fourth radio resource control information, the fourth radio resource control information containing a plurality of time slot offset lower limits and a plurality of indexes corresponding to the plurality of time slot offset lower limits; transmitting third indication information, the third indication information including information indicating switching to a fourth BWP; in a case that the third indication information further includes information indicating a target index, determining a target time slot offset lower limit as a time slot offset lower limit corresponding to the target index, the target index being one of the plurality of indexes; otherwise, determining the target time slot offset lower limit as a time slot offset lower limit corresponding to the fourth BWP.

[0060] In a seventh aspect, a terminal device is provided, comprising: a transceiver configured to receive, on a first time-domain resource, first indication information on a first bandwidth part (BWP), the first indication information indicating switching to a second BWP and indicating receiving or transmitting a first data channel on a second time-domain resource, a frequency domain location and a bandwidth of the first BWP being the same as a frequency domain location and a bandwidth of the second BWP; and the transceiver is further configured to receive or transmit, after the first time-domain resource ends and before a time-domain resource where a time slot of the second time-domain resource starts, a target signal on a frequency domain resource corresponding to the first BWP or the second BWP.

[0061] With reference to the seventh aspect, in some implementations of the seventh aspect, the transceiver is specifically configured to receive or transmit, after a target time and before a time-domain resource where a time slot of the second time-domain resource starts, a target signal on a frequency domain resource corresponding to the first BWP or the second BWP, the target time being after the first time-domain resource ends and before the time-domain resource where the time slot of the second time-domain resource starts.

[0062] With reference to the seventh aspect, in some implementations of the seventh aspect, a number of receiving antennas corresponding to the first BWP is the same as a number of receiving antennas corresponding to the second BWP, and / or a number of multiple-input multiple-output (MIMO) transmission layers corresponding to the first BWP is the same as a number of MIMO transmission layers corresponding to the second BWP.

[0063] With reference to the seventh aspect, in some implementations of the seventh aspect, before the transceiver receives the first indication information on the first time-domain resource on the first bandwidth part (BWP), the transceiver is further configured to receive first radio resource control information, the first radio resource control information containing target BWP configuration parameters, the target BWP configuration parameters being used to indicate first configuration parameters of the first BWP and second configuration parameters of the second BWP.

[0064] With reference to the seventh aspect, in some implementations of the seventh aspect, the terminal device further comprises a processing module configured to determine that a target time slot offset lower limit is a time slot offset lower limit corresponding to the second BWP.

[0065] In conjunction with the seventh aspect, in some implementations of the seventh aspect, before the transceiver module receives the first indication information on the first time domain resource and the first partial bandwidth (BWP), the transceiver module is further configured to receive second radio resource control information, the second radio resource control information including multiple time slot offset lower limits and multiple indices corresponding one-to-one with the multiple time slot offset lower limits; the terminal device further includes: a processing module, configured to determine, when the first indication information further includes information indicating a target index, that the target time slot offset lower limit is the time slot offset lower limit corresponding to the target index, the target index being one of the multiple indices.

[0066] Eighthly, a terminal device is provided, comprising: an acquisition module for acquiring a first time slot offset lower limit indicated by third radio resource control information; a receiving module for receiving second indication information, the second indication information indicating scheduling information of a second data channel; and a processing module, wherein if the second indication information further indicates a switch to a third BWP, the processing module is configured to determine that the target time slot offset lower limit is the time slot offset lower limit corresponding to the third BWP; otherwise, the processing module is configured to determine that the target time slot offset lower limit is the first time slot offset lower limit.

[0067] In conjunction with the eighth aspect, in some implementations of the eighth aspect, the lower limit of the time slot offset corresponding to the third BWP is the smallest time slot offset in the time domain resource allocation list on the third BWP.

[0068] In conjunction with the eighth aspect, in some implementations of the eighth aspect, the acquisition module is specifically used to acquire the first time slot offset lower limit and the second time slot offset lower limit indicated by the third radio resource control information, wherein the first time slot offset lower limit is less than the second time slot offset lower limit.

[0069] A ninth aspect provides a terminal device, comprising: a receiving module for receiving fourth radio resource control information, the fourth radio resource control information including a plurality of time slot offset lower limits and a plurality of indices corresponding one-to-one with the plurality of time slot offset lower limits; the receiving module is further configured to receive third indication information, the third indication information including information indicating a switch to a fourth BWP; and a processing module, wherein, if the third indication information further includes information indicating a target index, the processing module is configured to determine that the target time slot offset lower limit is the time slot offset lower limit corresponding to the target index, the target index being one of the plurality of indices; otherwise, the processing module is configured to determine that the target time slot offset lower limit is the time slot offset lower limit corresponding to the fourth BWP.

[0070] In a tenth aspect, a network device is provided, comprising: a transceiver configured to transmit, on a first time domain resource, first indication information on a first bandwidth part (BWP), the first indication information indicating switching to a second BWP and indicating receiving or transmitting a first data channel on a second time domain resource, a frequency domain location and a bandwidth of the first BWP being the same as a frequency domain location and a bandwidth of the second BWP; and the transceiver is further configured to receive or transmit a target signal on a frequency domain resource corresponding to the first BWP or the second BWP on a time domain resource after the first time domain resource ends and before a time slot where the second time domain resource is located starts.

[0071] With reference to the tenth aspect, in some implementations of the tenth aspect, the transceiver is specifically configured to receive or transmit the target signal on the frequency domain resource corresponding to the first BWP or the second BWP on the time domain resource after a target time and before the time slot where the second time domain resource is located starts, the target time being after the first time domain resource ends and before the time slot where the second time domain resource is located starts.

[0072] With reference to the tenth aspect, in some implementations of the tenth aspect, a number of receiving antennas corresponding to the first BWP is the same as a number of receiving antennas corresponding to the second BWP, and / or a number of multiple-input multiple-output (MIMO) transmission layers corresponding to the first BWP is the same as a number of MIMO transmission layers corresponding to the second BWP.

[0073] With reference to the tenth aspect, in some implementations of the tenth aspect, before the transceiver receives the first indication information on the first time domain resource on the first bandwidth part (BWP), the transceiver is further configured to transmit first radio resource control (RRC) information, the first RRC information containing target BWP configuration parameters, the target BWP configuration parameters being used to indicate first configuration parameters of the first BWP and second configuration parameters of the second BWP.

[0074] With reference to the tenth aspect, in some implementations of the tenth aspect, the network device further comprises a processing module configured to determine that a target time slot offset lower limit is a time slot offset lower limit corresponding to the second BWP.

[0075] In some implementations of the tenth aspect, before the transceiver receives the first indication information on the first time domain resource on the first partial bandwidth BWP, the transceiver is further configured to transmit second radio resource control information, the second radio resource control information including a plurality of time slot offset lower bounds and a plurality of indexes corresponding to the plurality of time slot offset lower bounds; in a case where the first indication information further includes information indicating a target index, the network device further includes a processing module configured to determine that a target time slot offset lower bound is a time slot offset lower bound corresponding to the target index, the target index being one of the plurality of indexes.

[0076] In the eleventh aspect, a network device is provided, including a transmitting module configured to transmit third radio resource control information indicating a first time slot offset lower bound; the transmitting module is further configured to transmit second indication information indicating scheduling information of a second data channel; in a case where the second indication information further indicates switching to a third BWP, a processing module is configured to determine that a target time slot offset lower bound is a time slot offset lower bound corresponding to the third BWP; otherwise, the processing module is configured to determine that the target time slot offset lower bound is the first time slot offset lower bound.

[0077] In some implementations of the eleventh aspect, the time slot offset lower bound corresponding to the third BWP is a minimum time slot offset in a time domain resource allocation list on the third BWP.

[0078] In some implementations of the eleventh aspect, the third radio resource control information is further configured to indicate a second time slot offset lower bound, the first time slot offset lower bound being smaller than the second time slot offset lower bound.

[0079] In the twelfth aspect, a network device is provided, including a transmitting module configured to transmit fourth radio resource control information including a plurality of time slot offset lower bounds and a plurality of indexes corresponding to the plurality of time slot offset lower bounds; the transmitting module is further configured to transmit third indication information including information indicating switching to a fourth BWP; in a case where the third indication information further includes information indicating a target index, a processing module is configured to determine that a target time slot offset lower bound is a time slot offset lower bound corresponding to the target index, the target index being one of the plurality of indexes; otherwise, the processing module is configured to determine that the target time slot offset lower bound is a time slot offset lower bound corresponding to the fourth BWP.

[0080] In the thirteenth aspect, a terminal device is provided, including modules configured to implement any possible implementation of the first aspect to the third aspect.

[0081] In a fourteenth aspect, a network device is provided, comprising modules for performing any possible implementation of the fourth aspect to the sixth aspect.

[0082] In a fifteenth aspect, a computer program storage medium is provided, the computer readable medium storing program codes, when the computer program codes are run on a computer, causing the computer to execute instructions of any possible implementation of the first aspect to the sixth aspect.

[0083] In a sixteenth aspect, a computer program product containing instructions, when the computer program product is run on a computer, causing the computer to execute the method of any possible implementation of the first aspect to the sixth aspect.

[0084] In a seventeenth aspect, a communication apparatus is provided, configured to execute the method of any possible implementation of the first aspect to the sixth aspect.

[0085] In an eighteenth aspect, a communication apparatus is provided, comprising a processor and a memory, the processor coupled to the memory, the memory configured to store a computer program, and the processor configured to execute the computer program stored in the memory to cause the communication apparatus to execute the method of any possible implementation of the first aspect to the sixth aspect.

[0086] In a nineteenth aspect, a communication apparatus is provided, comprising a processor, a memory and a transceiver, the memory configured to store a computer program, and the processor configured to execute the computer program stored in the memory to cause the apparatus to execute the method of any possible implementation of the first aspect to the sixth aspect.

[0087] In a twentieth aspect, a communication apparatus is provided, comprising at least one processor and a communication interface, the communication interface configured to enable the communication apparatus to interact with other communication apparatuses, and program instructions configured to, when executed on the at least one processor, cause the communication apparatus to implement the method of any possible implementation of the first aspect to the sixth aspect.

[0088] In a twenty-first aspect, a processor is provided, comprising at least one circuit configured to execute the method of any possible implementation of the first aspect to the sixth aspect.

[0089] In a twenty-second aspect, a chip system is provided, comprising at least one processor, and program instructions configured to, when executed on the at least one processor, cause the chip system to implement the method of any possible implementation of the first aspect to the sixth aspect.

[0090] In a twenty-third aspect, the present application provides a communication system, the communication system comprising the terminal device and the network device in the above. BRIEF DESCRIPTION OF DRAWINGS

[0091] Figure 1 is a schematic diagram of a communication scenario of an embodiment of the present application.

[0092] Figure 2 is a schematic diagram of transmitting and receiving signals before and after BWP switching.

[0093] Figure 3 is a schematic flow chart of a communication method of an embodiment of the present application.

[0094] Figure 4 is a schematic diagram of transmitting and receiving signals before and after BWP switching.

[0095] Figure 5 is a schematic diagram of transmitting and receiving signals before and after BWP switching.

[0096] Figure 6 is a schematic diagram of transmitting and receiving signals before and after BWP switching.

[0097] Figure 7 is a schematic diagram of transmitting and receiving signals before and after BWP switching.

[0098] Figure 8 is a schematic flow chart of a communication method of an embodiment of the present application.

[0099] Figure 9 is a schematic diagram of transmitting and receiving signals before and after BWP switching.

[0100] Figure 10 is a schematic flow chart of a communication method of an embodiment of the present application.

[0101] Figure 11 is a schematic structural diagram of a communication apparatus of an embodiment of the present application.

[0102] Figure 12 is a schematic structural diagram of a communication apparatus of an embodiment of the present application.

[0103] Figure 13 is a schematic structural diagram of a communication apparatus of an embodiment of the present application.

[0104] Figure 14 is a schematic structural diagram of a communication apparatus of an embodiment of the present application.

[0105] Figure 15 is a schematic structural diagram of a communication device according to an embodiment of the present application.

[0106] Figure 16 is a schematic structural diagram of a communication device according to an embodiment of the present application.

[0107] Figure 17 is a schematic structural diagram of a communication device according to an embodiment of the present application.

[0108] Figure 18 is a schematic structural diagram of a communication device according to an embodiment of the present application. DETAILED DESCRIPTION

[0109] The technical solutions in the present application will be described below in conjunction with the drawings.

[0110] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as global system for mobile communications (GSM) system, code division multiple access (CDMA) system, wideband code division multiple access (WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, 5th generation (5G) system or new radio (NR) or other communication systems, etc.

[0111] The terminal device in the embodiments of the present application can refer to a user equipment, an access terminal, a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or a user apparatus. The terminal device can also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved public land mobile network (PLMN), etc. The embodiments of the present application are not limited thereto.

[0112] The network device in the embodiments of the present application can be a device for communicating with a terminal. The network device can be a base transceiver station (BTS) in a global system for mobile communications (GSM) system or a code division multiple access (CDMA) system, a base station (NodeB, NB) in a wideband code division multiple access (WCDMA) system, an evolved NodeB (eNB or eNodeB) in an LTE system, a wireless controller in a cloud radio access network (CRAN) scenario, or a relay station, an access point, a vehicle-mounted device, a wearable device, a network device in a 5G network or a network device in a future evolved PLMN network, one or a group of (including multiple antenna panels) antenna panels of a base station in a 5G system, or a network node constituting a gNB or a transmission point, such as a baseband unit (BBU) or a distributed unit (DU), etc. The embodiments of the present application are not limited thereto.

[0113] In some deployments, a gNB can include a centralized unit (CU) and a DU. The gNB can also include an active antenna unit (AAU). The CU implements part of the functions of the gNB, and the DU implements part of the functions of the gNB. For example, the CU is responsible for processing non-real-time protocols and services, implements the radio resource control (RRC), and the functions of the packet data convergence protocol (PDCP) layer. The DU is responsible for processing the physical layer protocol and real-time services, and implements the functions of the radio link control (RLC) layer, the media access control (MAC) layer, and the physical (PHY) layer. The AAU implements part of the physical layer processing functions, radio frequency processing, and related functions of the active antenna. Since the information of the RRC layer eventually becomes the information of the PHY layer, or is transformed from the information of the PHY layer, under this architecture, high-layer signaling, such as RRC layer signaling, can also be considered as being sent by the DU, or by the DU+AAU. It can be understood that the network device can be a device including one or more of the CU node, the DU node, and the AAU node. In addition, the CU can be divided into a network device in the radio access network (RAN), or can be divided into a network device in the core network (CN), which is not limited in the present application.

[0114] In the embodiments of the present application, the terminal device or the network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and a memory (also referred to as a main memory). The operating system can be any one or more computer operating systems that implement business processing through a process, for example, a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. The application layer includes applications such as a browser, an address book, word processing software, and instant messaging software. Moreover, the embodiments of the present application do not particularly limit the specific structure of the execution subject of the method provided by the embodiments of the present application, as long as the execution subject can communicate according to the method provided by the embodiments of the present application by running a program in which the code of the method provided by the embodiments of the present application is recorded. For example, the execution subject of the method provided by the embodiments of the present application can be a terminal device or a network device, or a functional module capable of invoking and executing a program in a terminal device or a network device.

[0115] In addition, various aspects or features of the disclosure can be realized as methods, apparatus, or articles of manufacture using standard programming and / or engineering techniques. The term "article of manufacture" as used in the disclosure is intended to encompass a computer program accessible from any computer-readable device, carrier, or media. For example, computer-readable media can include but are not limited to magnetic storage devices (e.g., hard disk, floppy disk, magnetic strips, etc.), optical disks (e.g., compact disk (CD), digital versatile disk (DVD), etc.), smart cards, and flash memory devices (e.g., EPROM, card, stick, or key drive, etc.). Additionally, various storage media described herein can represent one or more devices and / or other machine-readable media for storing information. The term "machine-readable medium" can include, without being limited to, wireless channels and various other media capable of storing, containing, and / or carrying instruction and / or data.

[0116] Figure 1 FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application. Figure 1 The communication system in FIG. 1 can include at least one terminal (e.g., terminal 10, terminal 20, terminal 30, terminal 40, terminal 50, and terminal 60) and network device 70. Network device 70 is configured to provide a communication service for the terminal and access a core network. The terminal can access the network by searching for a synchronization signal, a broadcast signal, and the like transmitted by network device 70, and thereby perform communication with the network.Figure 1 The terminal 10, the terminal 20, the terminal 30, the terminal 40 and the terminal 60 in the communication system can perform uplink and downlink transmission with the network device 70. For example, the network device 70 can send downlink signals to the terminal 10, the terminal 20, the terminal 30, the terminal 40 and the terminal 60, and can receive uplink signals sent by the terminal 10, the terminal 20, the terminal 30, the terminal 40 and the terminal 60.

[0117] In addition, the terminal 40, the terminal 50 and the terminal 60 can also be regarded as a communication system, and the terminal 60 can send downlink signals to the terminal 40 and the terminal 50, and can receive uplink signals sent by the terminal 40 and the terminal 50.

[0118] It should be noted that the embodiments of the present application can be applied to a communication system including one or more network devices, or a communication system including one or more terminals, which are not limited in the present application.

[0119] It should be understood that the network device included in the communication system can be one or more. One network device can send data or control signaling to one or more terminals. Multiple network devices can also send data or control signaling to one or more terminals at the same time.

[0120] Figure 2 An example of signal transmission and reception before and after bandwidth part (BWP) switching is shown in the schematic diagram.

[0121] 201, the network device sends downlink control information (DCI) to the terminal device on a first BWP on a first time domain resource, and the downlink control information indicates switching to a second BWP and indicates receiving a physical downlink shared channel or sending a physical uplink shared channel on a second time domain resource.

[0122] Correspondingly, the terminal device receives the downlink control information on the first time domain resource.

[0123] The downlink control information can be transmitted on a physical downlink control channel.

[0124] The first time domain resource can be a resource in units of time slots, subframes, radio frames, mini-slots or orthogonal frequency division multiplexing (OFDM) symbols.

[0125] The network device can configure multiple BWPs for the terminal device through RRC signaling carrying multiple BWP configuration information, so that the terminal device can communicate with the network device through the resources on the multiple BWPs. When the RRC signaling configures a downlink BWP, the configuration parameters of the downlink BWP can be included in the RRC signaling. The configuration parameters of the downlink BWP are, for example, location and bandwidth, subcarrier space (SCS), cyclic prefix (CP), time domain resource allocation (TDRA) list of physical downlink shared channel (PDSCH), PDSCH scrambling ID, PDSCH demodulation reference signal (DMRS) type configuration, PDSCH transmission configuration indicator (TCI) state list, PDSCH rate matching pattern list, zero power channel state information-reference signal (ZP CSI-RS) resource list, periodic / aperiodic / semi-persistent ZP CSI-RS resource set list, and semi-persistent scheduling configuration of PDSCH. When the RRC signaling configures an uplink BWP, the configuration parameters of the uplink BWP can be included in the RRC signaling. The configuration parameters of the uplink BWP are, for example, location and bandwidth, SCS, CP, or TDRA list of physical uplink shared channel (PUSCH), PUSCH scrambling ID, PUSCH DMRS type configuration, PUSCH power control configuration, configuration of PUSCH carrying uplink control information (UCI) (including code rate scaling factor, etc.), PUCCH resource set list, PUCCH resource list, PUCCH power control configuration, configured grant of PUSCH, and sounding reference signal (SRS) configuration. The network device can indicate one of the multiple BWPs, thereby indicating the frequency band used by the terminal device for signaling.

[0126] The downlink control information can contain an index of the second BWP, thereby instructing the terminal device to switch the first BWP to the second BWP. The terminal device can determine whether the index of the currently used first BWP is the same as the index of the second BWP. If the same, the terminal device can determine not to perform BWP switching; if different, the terminal device can determine to perform switching from the first BWP to the second BWP.

[0127] The first indication information indicates switching to the second BWP, instructing the network device to instruct the terminal device to use the second BWP to transceive information. The downlink control information can contain a time slot offset between the starting position of the time slot where the second time domain resource is located and the starting position of the time slot where the first time domain resource is located. When the downlink control information indicates receiving a physical downlink shared channel on the second time domain resource, the time slot offset of the physical downlink shared channel can be denoted as K0. When the downlink control information indicates transmitting a physical uplink shared channel on the second time domain resource, the time slot offset of the physical uplink shared channel can be denoted as K2. Figure 2 An example of the time slot offset K0 of the physical downlink shared channel is shown. As shown, the terminal device calculates the starting position of the time slot n+K0 where the second time domain resource is located, according to the starting position of the time slot n where the first time domain resource is located. Figure 2 An example of the time slot offset K0 of the physical downlink shared channel is shown. As shown, the terminal device calculates the starting position of the time slot n+K0 where the second time domain resource is located, according to the starting position of the time slot n where the first time domain resource is located.

[0128] 202, performing switching from the first BWP to the second BWP.

[0129] The terminal device can perform switching from the first BWP to the second BWP immediately after receiving the first indication information, or perform switching from the first BWP to the second BWP within a period of time after receiving the first indication information.

[0130] Performing switching from the first BWP to the second BWP means that the terminal device will no longer use the first BWP to transceive signaling, but use the second BWP to transceive signaling. Before the terminal device can perform signaling transceiving on the second BWP, the terminal device needs to perform a series of preparation work such as changing the antenna, changing the BWP configuration parameter, etc., so that the BWP can not perform reception and transmission of signaling during the process of performing BWP switching. As shown, Figure 2 As shown, the terminal device can not perform reception and transmission of signaling after the end of the first time domain resource to before the start of the second time domain resource. Since the terminal device needs to receive or transmit the first data channel on the second time domain resource, the terminal device needs to complete switching from the first BWP to the second BWP before the start of the second time domain resource.

[0131] Due to different device processing capabilities and different BWP configuration parameters, the actual time delay required by the terminal device to perform BWP switching is different. In order to coordinate the signaling transmission between the network device and the terminal device, the network device and the terminal device can agree on a BWP switching time delay. For example, when the SCS is 0, the agreed BWP switching time delay under the first type of terminal device capability is 3 slots, and the agreed BWP switching time delay under the second type of terminal device capability is 1 slot; when the SCS is 1, the agreed BWP switching time delay under the first type of terminal device capability is 5 slots, and the agreed BWP switching time delay under the second type of terminal device capability is 2 slots; when the SCS is 2, the agreed BWP switching time delay under the first type of terminal device capability is 9 slots, and the agreed BWP switching time delay under the second type of terminal device capability is 3 slots; when the SCS is 3, the agreed BWP switching time delay under the first type of terminal device capability is 17 slots, and the agreed BWP switching time delay under the second type of terminal device capability is 6 slots. The network device can schedule a first data channel according to the agreed BWP switching time delay, so that the terminal device can receive or send the first data channel on the second BWP.

[0132] For convenience of description, the "actual BWP switching time delay" can represent the time delay actually consumed by the terminal device when performing BWP switching; the "agreed BWP switching time delay" can represent the BWP switching time delay agreed by the network device and the terminal device. Generally, the agreed BWP switching time delay is longer than the actual BWP switching time delay. The "agreed BWP switching time delay" can also be referred to as the interruption time. In this application, the "agreed BWP switching time delay" can be the BWP switching time delay specified in the communication protocol. Figure 2 The interval between the physical downlink control channel and the physical downlink shared channel in the DCI can be represented by the agreed BWP switching time delay.

[0133] The start position of the agreed BWP switching time delay can be the start position of the time slot where the PDCCH transmitting the DCI is located. The start position of the agreed BWP switching time delay can also be the end position of the third symbol of the time slot where the PDCCH transmitting the DCI is located. The start position of the agreed BWP switching time delay can also be the end position of the last symbol of the PDCCH transmitting the DCI. The start position of the agreed BWP switching time delay can also be the end position of the time slot where the PDCCH transmitting the DCI is located.

[0134] 203, receiving or sending the first data channel on the second BWP on the second time domain resource.

[0135] The terminal device receives or transmits the first data channel on the second BWP after completing the switching from the first BWP to the second BWP. Receiving or transmitting the first data channel can be understood as receiving or transmitting a message or signaling on the first data channel.

[0136] As described above, in order to ensure that the terminal device transmits and receives messages correctly, the network device and the terminal device can agree on a longer BWP switching delay, and the agreed BWP switching delay is longer than the actual BWP switching delay required by the terminal device. In order to improve the flexibility of signal transmission and reception during BWP switching and improve the utilization rate of channel resources, the present application provides a communication method to provide a new BWP switching mode.

[0137] Figure 3 The communication method provided by the present application is shown in the schematic flowchart.

[0138] 301, the network device transmits first indication information on a first part of bandwidth BWP on a first time domain resource, the first indication information indicating switching to a second BWP and indicating receiving or transmitting a first data channel on a second time domain resource, the frequency domain location and bandwidth of the first BWP being the same as the frequency domain location and bandwidth of the second BWP.

[0139] Correspondingly, the terminal device receives the first indication information on the first part of bandwidth BWP on the first time domain resource.

[0140] That is, when the terminal device needs to receive or transmit data on a new BWP, the network device can send indication information indicating the new BWP to the terminal device to instruct the terminal device to perform BWP switching. The network device can indicate the time domain resource where the first data channel is located to the terminal device through the first indication information, so that the terminal device completes BWP switching before receiving or transmitting the first data channel. The frequency domain location and bandwidth are a configuration parameter of the BWP, and the frequency domain location and bandwidth of the BWP can be equivalent to the frequency domain resource of the BWP, or equivalent to the frequency band of the BWP. The frequency domain location and bandwidth of the first BWP are the same as the frequency domain location and bandwidth of the second BWP, which can be equivalent to the frequency domain resource of the first BWP being the same as the frequency domain resource of the second BWP. Alternatively, the frequency domain location and bandwidth of the first BWP are the same as the frequency domain location and bandwidth of the second BWP, which can be equivalent to the frequency band of the first BWP being the same as the frequency band of the second BWP.

[0141] The network device can configure multiple BWPs for the terminal device through RRC signaling carrying multiple BWP configuration information, so that the terminal device can communicate with the network device through the resources on the multiple BWPs. When the RRC signaling configures a downlink BWP, the configuration parameters of the downlink BWP can be included in the RRC signaling. The configuration parameters of the downlink BWP are, for example, location and bandwidth, SCS, CP, TDRA list of PDSCH, PDSCH scrambling ID, DMRS type configuration of PDSCH, TCI state list of PDSCH, rate matching pattern list of PDSCH, ZP CSI-RS resource list, periodic / aperiodic / semi-persistent ZP CSI-RS resource set list, and semi-persistent scheduling configuration of PDSCH. When the RRC signaling configures an uplink BWP, the configuration parameters of the uplink BWP can be included in the RRC signaling. The configuration parameters of the uplink BWP are, for example, location and bandwidth, SCS, CP, TDRA list of PUSCH, PUSCH scrambling ID, DMRS type configuration of PUSCH, power control configuration of PUSCH, configuration of UCI carried on PUSCH (including code rate scaling factor, etc.), PUCCH resource set list, PUCCH resource list, power control configuration of PUCCH, configured grant of PUSCH, and SRS configuration. The network device can indicate one of the multiple BWPs, thereby indicating the frequency band used by the terminal device for signaling. In some cases, the frequency domain location and bandwidth of the first BWP are the same as those of the second BWP, meaning that the frequency domain location and bandwidth, subcarrier spacing, and cyclic prefix corresponding to the first BWP are the same as those corresponding to the second BWP.

[0142] The frequency domain location and bandwidth of the first BWP are the same as those of the second BWP, but the first BWP is different from the second BWP. That is, the ID of the first BWP is different from that of the second BWP, but the frequency band where the first BWP is located is the same as that where the second BWP is located. For example, the frequency band of the first BWP and the frequency band of the second BWP are both 3540-3560 MHz, but the ID of the first BWP is 1 and the ID of the second BWP is 2. The terminal device can determine that the first BWP and the second BWP are different BWPs according to the IDs of the BWPs. In this application, even if the configuration parameters of the first BWP are basically the same as those of the second BWP, if the identity (ID) of the first BWP is different from that of the second BWP, the first BWP and the second BWP are different BWPs.

[0143] Among all configurations of the BWP, the frequency domain position and the bandwidth have the greatest impact on the actual switching delay of the BWP. That is, if the frequency domain position and the bandwidth of the two BWPs before and after switching are the same, the actual BWP switching delay is shorter; if the frequency domain position and the bandwidth of the two BWPs before and after switching are different, the actual BWP switching delay is longer. Therefore, when the terminal device judges that the frequency domain position and the bandwidth of the first BWP are the same as the frequency domain position and the bandwidth of the second BWP, the terminal device can know that the actual BWP switching delay is greatly different from the agreed BWP switching delay.

[0144] In one example, in addition to the frequency domain position and the bandwidth, other BWP parameters of the first BWP can be completely different from other configuration parameters of the second BWP.

[0145] For example, the first BWP and the second BWP are both downlink BWPs, the configuration parameters of the first BWP include SCS1, CP1, TDRA list 1, scrambling ID1, DMRS type configuration 1, TCI state list 1, rate matching pattern list 1, ZP CSI-RS resource list 1, periodic / aperiodic / semi-persistent ZP CSI-RS resource set list 1, and semi-persistent scheduling configuration 1; the configuration parameters of the second BWP include SCS2, CP2, TDRA list 2, scrambling ID2, DMRS type configuration 2, TCI state list 2, rate matching pattern list 2, ZP CSI-RS resource list 2, periodic / aperiodic / semi-persistent ZP CSI-RS resource set list 2, and semi-persistent scheduling configuration 2. The configuration parameters of the first BWP and the configuration parameters of the second BWP satisfy: SCS1 is different from SCS2; and CP1 is different from CP2; and TDRA list 1 is different from TDRA list 2; and scrambling ID1 is different from scrambling ID2; and DMRS type configuration 1 is different from DMRS type configuration 2; and TCI state list 1 is different from TCI state list 2; and rate matching pattern list 1 is different from rate matching pattern list 2; and ZP CSI-RS resource list 1 is different from ZP CSI-RS resource list 2; and periodic / aperiodic / semi-persistent ZP CSI-RS resource set list 1 is different from periodic / aperiodic / semi-persistent ZP CSI-RS resource set list 2; and semi-persistent scheduling configuration 1 is different from semi-persistent scheduling configuration 2.

[0146] For another example, the first BWP and the second BWP are both uplink BWPs, the configuration parameters of the first BWP include SCS3, CP3, TDRA list 3, scrambling ID 3, DMRS type configuration 3, PUSCH power control configuration 3, UCI configuration 3, PUCCH resource set list 3, PUCCH resource list 3, PUCCH power control configuration 3, PUSCH configured grant, SRS configuration 3; the configuration parameters of the second BWP include SCS4, CP4, TDRA list 4, scrambling ID 4, DMRS type configuration 4, PUSCH power control configuration 4, UCI configuration 4, PUCCH resource set list 4, PUCCH resource list 4, PUCCH power control configuration 4, PUSCH configured grant, SRS configuration 4. The configuration parameters of the first BWP and the configuration parameters of the second BWP satisfy: SCS3 is different from SCS4; and CP3 is different from CP4; and TDRA list 3 is different from TDRA list 4; and scrambling ID 3 is different from scrambling ID 4; and DMRS type configuration 3 is different from DMRS type configuration 4; and TCI state list 3 is different from TCI state list 4; and rate matching pattern list 3 is different from rate matching pattern list 4; and ZP CSI-RS resource list 3 is different from ZP CSI-RS resource list 4; and periodic / aperiodic / semi-persistent ZP CSI-RS resource set list 3 is different from periodic / aperiodic / semi-persistent ZP CSI-RS resource set list 4; and semi-persistent scheduling configuration 3 is different from semi-persistent scheduling configuration 4.

[0147] In another example, other BWP parameters of the first BWP can be the same or partially the same as other configuration parameters of the second BWP, except for the frequency domain location and the bandwidth.

[0148] For example, the first BWP and the second BWP are both downlink BWPs, the configuration parameters of the first BWP include SCS1, CP1, TDRA list 1, scrambling ID 1, DMRS type configuration 1, TCI state list 1, rate matching pattern list 1, ZP CSI-RS resource list 1, periodic / aperiodic / semi-persistent ZP CSI-RS resource set list 1, semi-persistent scheduling configuration 1; the configuration parameters of the second BWP include SCS2, CP2, TDRA list 2, scrambling ID 2, DMRS type configuration 2, TCI state list 2, rate matching pattern list 2, ZP CSI-RS resource list 2, periodic / aperiodic / semi-persistent ZP CSI-RS resource set list 2, semi-persistent scheduling configuration 2. The configuration parameters of the first BWP and the configuration parameters of the second BWP satisfy at least one of the following: SCS1 is same as SCS2; CP1 is same as CP2; TDRA list 1 is same as TDRA list 2; scrambling ID 1 is same as scrambling ID 2; DMRS type configuration 1 is same as DMRS type configuration 2; TCI state list 1 is same as TCI state list 2; rate matching pattern list 1 is same as rate matching pattern list 2; ZP CSI-RS resource list 1 is same as ZP CSI-RS resource list 2; periodic / aperiodic / semi-persistent ZP CSI-RS resource set list 1 is same as periodic / aperiodic / semi-persistent ZP CSI-RS resource set list 2; semi-persistent scheduling configuration 1 is same as semi-persistent scheduling configuration 2.

[0149] For another example, the first BWP and the second BWP are both uplink BWPs, the configuration parameters of the first BWP include SCS 3, CP 3, TDRA list 3, scrambling ID 3, DMRS type configuration 3, PUSCH power control configuration 3, UCI configuration 3, PUCCH resource set list 3, PUCCH resource list 3, PUCCH power control configuration 3, PUSCH configured grant, SRS configuration 3; and the configuration parameters of the second BWP include SCS 4, CP 4, TDRA list 4, scrambling ID 4, DMRS type configuration 4, PUSCH power control configuration 4, UCI configuration 4, PUCCH resource set list 4, PUCCH resource list 4, PUCCH power control configuration 4, PUSCH configured grant, SRS configuration 4. The configuration parameters of the first BWP and the configuration parameters of the second BWP satisfy at least one of the following: SCS 3 is the same as SCS 4; CP 3 is the same as CP 4; TDRA list 3 is the same as TDRA list 4; scrambling ID 3 is the same as scrambling ID 4; DMRS type configuration 3 is the same as DMRS type configuration 4; PUSCH power control configuration 3 is the same as PUSCH power control configuration 4; UCI configuration 3 is the same as UCI configuration 4; PUCCH resource set list 3 is the same as PUCCH resource set list 4; PUCCH resource list 3 is the same as PUCCH resource list 4; PUCCH power control configuration 3 is the same as PUCCH power control configuration 4; PUSCH configured grant 3 is the same as PUSCH configured grant 4; and SRS configuration 3 is the same as SRS configuration 4.

[0150] Optionally, the method further includes: determining the agreed BWP switching delay according to the configuration parameters of the first BWP and the configuration parameters of the second BWP.

[0151] In one example, the terminal device or the network device can adjust the agreed BWP switching delay according to the similarity of the configuration parameters of the first BWP and the configuration parameters of the second BWP. That is, the network device and the terminal device can both shorten or lengthen the BWP switching delay according to the similarity of the configuration parameters of the first BWP and the configuration parameters of the second BWP, so that the network device can efficiently schedule resources for the terminal device. The similarity of the configuration parameters of the first BWP and the configuration parameters of the second BWP can be represented by the number of the same BWP configuration parameters. The more the number of the same BWP configuration parameters, the higher the similarity of the configuration parameters of the first BWP and the configuration parameters of the second BWP.

[0152] For example, when N of the M configuration parameters of the first BWP are the same as N of the M configuration parameters of the second BWP, the agreed BWP switching delay can be determined as the agreed BWP switching delay x (M-N) / M.

[0153] In one example, the terminal device or the network device can determine the agreed BWP switching delay according to the type of the same configuration parameters in the first BWP and the second BWP.

[0154] For example, in the case that the frequency domain location and bandwidth of the first BWP are the same as those of the second BWP, and the subcarrier spacing of the first BWP is the same as that of the second BWP, and the cyclic prefix of the first BWP is the same as that of the second BWP, the terminal device can receive a plurality of indication information on the first BWP, and receive a data channel scheduled by the plurality of indication information on the second BWP. For example, the terminal device receives target indication information before receiving the first indication information, and the target indication information contains scheduling information (such as the time slot offset between the starting position of the time slot where the first indication information is located and the starting position of the time slot where the target data channel is located) indicating the target data channel, and the time domain location where the target data channel is located is after the first time domain resource. The terminal device can receive the target data channel on the second BWP. The time domain location where the target data channel is located can be before the second time domain location or after the second time domain location. It can be seen that the frequency domain location and bandwidth, subcarrier spacing, and cyclic prefix corresponding to the first BWP are the same as those corresponding to the second BWP, which means that the similarity between the first BWP and the second BWP is very high.

[0155] Optionally, in the case that the frequency domain location and bandwidth, subcarrier spacing, and cyclic prefix corresponding to the first BWP are the same as those corresponding to the second BWP, the actual / agreed BWP switching delay is zero.

[0156] That is, in the case that the frequency domain location and bandwidth, subcarrier spacing, and cyclic prefix corresponding to the first BWP are the same as those corresponding to the second BWP, the terminal device almost does not need to do any preparation work to receive and transmit signaling on the new second BWP. At this time, the actual switching delay of the terminal device can be zero. The network device and the terminal device can determine the agreed BWP switching delay as zero, that is, the network device can timely schedule resources for the terminal device.

[0157] Optionally, in the case that the frequency domain location and bandwidth, subcarrier spacing, and cyclic prefix corresponding to the first BWP are the same as those corresponding to the second BWP, the actual / agreed BWP switching delay is zero.

[0158] That is, the first BWP and the second BWP are both not associated with the number of receiving antennas and / or the number of MIMO transmission layers, and in a case where the frequency domain position and bandwidth corresponding to the first BWP, the subcarrier spacing, and the cyclic prefix are all same as the frequency domain position and bandwidth corresponding to the second BWP, the subcarrier spacing, and the cyclic prefix, the actual / agreed BWP switching delay is zero.

[0159] Optionally, the first BWP and the second BWP are both associated with the number of receiving antennas and / or the number of MIMO transmission layers.

[0160] Optionally, in a case where the number of receiving antennas corresponding to the first BWP is same as the number of receiving antennas corresponding to the second BWP, and / or, the number of MIMO transmission layers corresponding to the first BWP is same as the number of MIMO transmission layers corresponding to the second BWP, the actual / agreed BWP switching delay is zero.

[0161] In one example, in a case where the frequency domain position and bandwidth corresponding to the first BWP is same as the frequency domain position and bandwidth corresponding to the second BWP, and the number of receiving antennas corresponding to the first BWP is same as the number of receiving antennas corresponding to the second BWP, the agreed BWP switching delay is zero.

[0162] In one example, in a case where the frequency domain position and bandwidth corresponding to the first BWP is same as the frequency domain position and bandwidth corresponding to the second BWP, and the number of MIMO transmission layers corresponding to the first BWP is same as the number of MIMO transmission layers corresponding to the second BWP, the agreed BWP switching delay is zero.

[0163] In one example, in a case where the frequency domain position and bandwidth corresponding to the first BWP is same as the frequency domain position and bandwidth corresponding to the second BWP, the number of receiving antennas corresponding to the first BWP is same as the number of receiving antennas corresponding to the second BWP, and the number of MIMO transmission layers corresponding to the first BWP is same as the number of MIMO transmission layers corresponding to the second BWP, the agreed BWP switching delay is zero.

[0164] If the frequency domain position and bandwidth corresponding to the first BWP is same as the frequency domain position and bandwidth corresponding to the second BWP, the number of receiving antennas corresponding to the first BWP is different from the number of receiving antennas corresponding to the second BWP, the agreed BWP switching delay is not zero but can take a smaller value.

[0165] Similarly, if the frequency domain location and bandwidth corresponding to the first BWP are the same as the frequency domain location and bandwidth corresponding to the second BWP, the number of MIMO transmission layers corresponding to the first BWP is different from the number of MIMO transmission layers corresponding to the second BWP, and the agreed BWP switching delay is not zero but can take a smaller value.

[0166] That is, the number of receiving antennas corresponding to the BWP, and the number of MIMO transmission layers corresponding to the BWP have the least impact on the BWP switching delay. In other words, the number of receiving antennas corresponding to the first BWP is the same as the number of receiving antennas corresponding to the second BWP, and / or the number of MIMO transmission layers corresponding to the first BWP is the same as the number of MIMO transmission layers corresponding to the second BWP, which means that the first BWP and the second BWP are very similar in degree, and the terminal device almost does not need to do any preparation work to receive and transmit signaling on the new second BWP. At this time, the actual switching delay of the terminal device can be zero. The network device and the terminal device can determine that the agreed BWP switching delay is zero, that is, the network device can timely schedule resources for the terminal device.

[0167] It should be noted that the closer the configuration parameters of the first BWP and the configuration parameters of the second BWP, the shorter the actual BWP switching delay required by the terminal device, and the shorter the agreed BWP switching delay between the terminal device and the network device, that is, the actual BWP switching delay is related to the agreed BWP switching delay. However, the network device usually does not really know the actual BWP switching delay, but schedules resources for the terminal device according to the agreed BWP switching delay. Therefore, the network device and the terminal device can adjust the agreed BWP switching delay according to the configuration parameters of the first BWP and the configuration parameters of the second BWP, the network device can schedule resources for the terminal device according to the adjusted agreed BWP switching delay, and the terminal device can perform detection and transmission of signaling on the scheduled resources after completing BWP switching, thereby realizing stable signaling reception and transmission.

[0168] Optionally, before receiving the first indication information on the first time domain resource and the first part of bandwidth BWP, the method further comprises: receiving first radio resource control information, wherein the first radio resource control information contains target BWP configuration parameters, and the target BWP configuration parameters are used to indicate the first configuration parameters of the first BWP and the second configuration parameters of the second BWP.

[0169] That is, when two different BWPs have the same configuration parameters, the terminal device can determine the first configuration parameters of the first BWP and the second configuration parameters of the second BWP according to the target BWP configuration parameters. In other words, the first BWP and the second BWP can share or share the target configuration parameters.

[0170] In one example, the terminal device can store two tables, the first table containing configuration parameters of multiple BWPs, and the second table containing one or more target BWP configuration parameters. Assuming that the first configuration parameter of the first BWP is the same as the second configuration parameter of the second BWP, the index of the target BWP configuration parameter can be filled in the position of the corresponding first configuration parameter and second configuration parameter in the first table. When the terminal device performs switching from the first BWP to the second BWP, it can be determined whether the index corresponding to the first configuration parameter is the same as the index corresponding to the second configuration parameter. If they are the same, it means that the first configuration parameter is the same as the second configuration parameter, and the terminal device can not change the first configuration parameter when switching the BWP, i.e., continue to use the first configuration parameter, i.e., regard the first configuration parameter as the second configuration parameter.

[0171] In one example, the terminal device can store a table containing configuration parameters of multiple BWPs. Assuming that the first configuration parameter of the first BWP, the second configuration parameter of the second BWP, and the third configuration parameter of the third BWP are all the same, the content of the first configuration parameter can be completely filled in the position corresponding to the first configuration parameter in the table, and the index of the first configuration parameter or the index of the first BWP can be filled in the position corresponding to the second configuration parameter and the position corresponding to the third configuration parameter in the table. When the terminal device determines to switch from the first BWP to the second BWP, according to the index recorded by the second configuration parameter, the terminal device can determine not to change the first configuration parameter when switching the BWP, continue to use the first configuration parameter, i.e., regard the first configuration parameter as the second configuration parameter. Assuming that the terminal device subsequently determines to switch from the second BWP to the third BWP, since the index corresponding to the second configuration parameter is the same as the index corresponding to the third configuration parameter, it means that the second configuration parameter is the same as the third configuration parameter, the terminal device can not change the second configuration parameter when switching the BWP, continue to use the second configuration parameter, i.e., regard the second configuration parameter as the third configuration parameter. Assuming that the terminal device subsequently determines to switch from the fourth BWP to the second BWP, the terminal device can refer to the content of the first configuration parameter according to the index recorded by the second configuration parameter to determine the second configuration parameter.

[0172] It can be understood that the above embodiments are only to help those skilled in the art better understand the technical solutions of the present application, and are not a limitation on the technical solutions of the present application. Those skilled in the art will think of many improvements and other embodiments of the present application under the guidance of the inspiration presented in the foregoing description. Therefore, it should be understood that the present application is not limited to the specific embodiments disclosed.

[0173] The first time domain resource can be a resource in units of time slots, subframes, radio frames, mini-slots, or OFDM symbols.

[0174] The first indication information can contain an index of the second BWP, so as to instruct the terminal device to switch the first BWP to the second BWP. The terminal device can determine whether the index of the currently used first BWP is the same as the index of the second BWP. If the same, the terminal device can determine not to perform BWP switching; if different, the terminal device can determine to perform switching from the first BWP to the second BWP.

[0175] The first indication information can contain a slot offset between the starting position of the slot where the second time-domain resource is located and the starting position of the slot where the first time-domain resource is located. When the first data channel is a downlink data channel, the slot offset of the first data channel can be denoted as K0. When the first data channel is an uplink data channel, the slot offset of the first data channel can be denoted as K2. Figure 4 An example of the second time-domain resource indicating the uplink data channel slot offset K2 is shown. As shown in the figure, the terminal device calculates the starting position of the slot n+K2 where the second time-domain resource is located according to the starting position of the slot n where the first time-domain resource is located, so that the terminal device can receive or send the first data channel on the second time-domain resource. Figure 4 An example of the second time-domain resource indicating the uplink data channel slot offset K2 is shown. As shown in the figure, the terminal device calculates the starting position of the slot n+K2 where the second time-domain resource is located according to the starting position of the slot n where the first time-domain resource is located, so that the terminal device can receive or send the first data channel on the second time-domain resource.

[0176] The first indication information can be DCI transmitted on the PDCCH. The first data channel can be PDSCH or PUSCH. The first indication information can also be other indication information similar to DCI.

[0177] 302, the terminal device receives or sends a target signal on the frequency-domain resource corresponding to the first BWP or the second BWP on the time-domain resource after the end of the first time-domain resource and before the start of the slot where the second time-domain resource is located.

[0178] Correspondingly, the network device transmits or receives a target signal on the frequency-domain resource corresponding to the first BWP or the second BWP on the time-domain resource after the end of the first time-domain resource and before the start of the slot where the second time-domain resource is located.

[0179] That is, after the terminal device receives the first indication information, and before the start of the slot where the second time-domain resource indicated by the first indication information is located, the target signal can be received or sent on the second BWP. The target signal can occupy part or all of the time-domain resource after the end of the first time-domain resource and before the start of the slot where the second time-domain resource is located. As shown in the figure, Figure 4As shown, the first indication information occupies the first time domain resource, the first data channel occupies the second time domain resource, and the target signal is located on the time domain resource after the end of the first time domain resource and before the start of the time slot where the second time domain resource is located.

[0180] The reception of the target signal may be, for example, PDCCH and / or PDSCH and / or Channel State Information Reference Signal (CSI-RS), and the transmission of the target signal may be one or more of physical uplink control channel (PUCCH) and / or PUSCH and / or Sounding Reference Signal (SRS).

[0181] Since the frequency domain location and bandwidth of the first BWP are the same as the frequency domain location and bandwidth of the second BWP, the frequency domain resource corresponding to the first BWP is the same as the frequency domain resource corresponding to the second BWP. In one example, the terminal device actually receives or transmits the target signal on the first BWP. In one example, the terminal device actually receives or transmits the target signal on the second BWP. However, since the frequency domain resource corresponding to the first BWP is the same as the frequency domain resource corresponding to the second BWP, even if the terminal device receives or transmits the target signal on the second BWP, it can be described as receiving or transmitting the target signal on the frequency domain resource corresponding to the first BWP in addition to the frequency domain resource corresponding to the second BWP. Similarly, even if the terminal device receives or transmits the target signal on the first BWP, it can be described as receiving or transmitting the target signal on the frequency domain resource corresponding to the second BWP in addition to the frequency domain resource corresponding to the first BWP.

[0182] Receiving or transmitting the target signal on the time domain resource after the end of the first time domain resource and before the start of the time slot where the second time domain resource is located can also be described as receiving or transmitting the target signal after the end of the first time domain resource and before the start of the time slot indicated by the time slot offset.

[0183] In one example, the actual BWP switching delay or the agreed BWP switching delay is zero.

[0184] In other words, the terminal device can receive or transmit the target signal on the second BWP immediately after the end of the first time domain resource. As described above, the actual / agreed BWP switching delay can be zero, on the basis that the frequency domain location and bandwidth of the first BWP are the same as those of the second BWP, that the number of receiving antennas corresponding to the first BWP is the same as that corresponding to the second BWP, and / or that the number of MIMO (Multiple Input Multiple Output) transmission layers corresponding to the first BWP is the same as that corresponding to the second BWP.

[0185] The start position of the agreed BWP switching delay can be the end position of the third symbol of the slot in which the PDCCH carrying the DCI is located. The start position of the agreed BWP switching delay can also be the end position of the last symbol of the PDCCH carrying the DCI. The start position of the agreed BWP switching delay can also be the end position of the slot in which the PDCCH carrying the DCI is located. Figure 5 An example in which the end position of the slot in which the PDCCH carrying the DCI is located is taken as the start position of the agreed BWP switching delay is shown. As Figure 5 The terminal device receives or transmits the target signal on the second BWP. The first indication information occupies the first time domain resource, and the first data channel occupies the second time domain resource. The target signal is located after the end of the first time domain resource, and the start position of the time domain resource in which the target signal is located is the same as the end position of the slot in which the first time domain resource is located.

[0186] In one example, the target signal is received or transmitted on the frequency domain resource corresponding to the first BWP or the second BWP on the time domain resource after the target time and before the start of the slot in which the second time domain resource is located. The target time is located after the end of the first time domain resource and before the start of the slot in which the second time domain resource is located.

[0187] The target time may, for example, be the end time of the agreed BWP switching delay. As described above, the scheme for adjusting the agreed BWP switching delay according to the configuration parameters of the first BWP and the second BWP, similarly, the target time can be determined according to the configuration parameters of the first BWP and the second BWP. For example, the closer the target time is to the end position of the first time domain resource, the more similar the configuration parameters of the first BWP are to those of the second BWP.

[0188] In one possible case, the actual / agreed BWP switching delay is not zero. The target time can be the end time of the BWP switching delay. Figure 6 An example in which the end position of the last symbol of the PDCCH carrying the DCI is taken as the start position of the agreed BWP switching delay is shown. As Figure 6As shown, the first indication information occupies the first time domain resource, and the first data channel occupies the second time domain resource. Assuming that the agreed BWP switching delay is 1 slot, the terminal device does not perform signal transceiving within the agreed BWP switching delay. After the agreed BWP switching delay and before the slot where the second time domain resource is located, the terminal device receives or transmits the target signal on the second BWP.

[0189] In particular, the actual / agreed BWP switching delay is zero, that is, the terminal device has the capability to receive or transmit the target signal on the second BWP from the start position of the BWP switching delay, but the network device does not schedule the time domain resource corresponding to the start position of the BWP switching delay. Still taking Figure 5 For example, assuming that the end position of the last symbol of the PDCCH carrying the DCI is taken as the start position of the agreed BWP switching delay, the agreed BWP switching delay is zero, so the start position of the agreed BWP switching delay is the same as the end position of the agreed BWP switching delay. The target time is a certain time after the first time domain resource and before the start of the next slot of the slot where the first time domain resource is located, and the start position of the time domain resource where the target signal is located is located after the target time.

[0190] In particular, the terminal device can also not immediately perform BWP switching after receiving the first indication information. Then, even if the actual / agreed BWP switching delay is zero, still taking Figure 5 For example, assuming that the end position of the slot where the PDCCH carrying the DCI is located is taken as the start position of the agreed BWP switching delay, the agreed BWP switching delay is zero, so the start position of the agreed BWP switching delay is the same as the end position of the agreed BWP switching delay. The target time is a certain time after the first time domain resource and before the start of the next slot of the slot where the first time domain resource is located, and the start position of the time domain resource where the target signal is located is located after the target time.

[0191] Optionally, the method further includes determining that the target slot offset lower limit is a slot offset lower limit corresponding to the second BWP.

[0192] That is, the network device and the terminal device can take the slot offset lower limit corresponding to the second BWP as the slot offset lower limit used after switching to the second BWP.

[0193] In this application, the target slot offset lower limit can be understood as a target slot offset lower limit used by the terminal device subsequently, that is, the terminal device determines the target slot offset lower limit, thereby correcting the currently used slot offset lower limit.

[0194] If the first indication information includes an indication to switch to the second BWP and also includes scheduling information indicating the first data channel, the network device determines the target timeslot offset lower limit as the timeslot offset lower limit corresponding to the second BWP. For example... Figure 7 As shown, the target signal includes the fourth indication information. The lower limit of the time slot offset corresponding to the second BWP is K. 0min 0. After the terminal device switches to the second BWP and before the terminal device receives the fourth indication information for the first time on the second BWP, the target time slot offset lower limit is the time slot offset lower limit used by the second BWP. The terminal device can process the fourth indication information according to the time slot offset lower limit corresponding to the second BWP, that is, if the terminal device receives the fourth indication information in time slot n, it can process the fourth indication information in time slot n+K. 0min The decoding of the fourth indication information is completed before 0. Furthermore, since the target time slot offset lower limit is the time slot offset lower limit used by the second BWP, the time slot where the fourth data channel resides can be time slot n+K. 0min The time slot after 0. The time domain location of the fourth data channel is after the time domain location of the first data channel, such as... Figure 7 As shown.

[0195] Optionally, before receiving the first indication information on the first time domain resource and the first partial bandwidth (BWP), the method further includes: receiving second radio resource control information, the second radio resource control information including a plurality of time slot offset lower limits and a plurality of indices corresponding one-to-one with the plurality of time slot offset lower limits; if the first indication information also includes information indicating a target index, the method further includes: determining that the target time slot offset lower limit is the time slot offset lower limit corresponding to the target index, the target index being one of the plurality of indices.

[0196] In other words, if the second indication information indicates a target index corresponding to the lower limit of the time slot offset configured in RRC, the lower limit of the time slot offset used by the terminal device after switching to the second BWP is the lower limit of the time slot offset corresponding to the target index.

[0197] If the second indication information also includes information indicating the target index, the network device determines the target timeslot offset lower limit as the timeslot offset lower limit corresponding to the target index. For example... Figure 8 As shown, the target signal includes the fourth indication information. The lower limit of the time slot offset corresponding to the target index is K. 0min 0. After the terminal device switches to the second BWP and before the terminal device receives the fourth indication information for the first time on the second BWP, the lower limit of the target time slot offset is the lower limit of the time slot offset corresponding to the target index. The terminal device can process the fourth indication information according to the lower limit of the time slot offset corresponding to the target index, that is, if the terminal device receives the fourth indication information in time slot n, it can process it in time slot n+K. 0minThe decoding of the fourth indication information is completed before the time slot. Since the target time slot offset lower limit is the time slot offset lower limit corresponding to the target index, the time slot where the fourth data channel is located can be time slot n+K 0min the time slot after 0. The time domain location where the fourth data channel is located is after the time domain location where the first data channel is located, as shown in Figure 7

[0198] In one example, the terminal device receives the fourth indication information. In the case where the fourth indication information indicates one of the plurality of time slot offset lower limits, the target time slot offset lower limit is the time slot offset lower limit indicated by the fourth indication information. In the case where the fourth indication information does not indicate one of the plurality of time slot offset lower limits, the target time slot offset lower limit is the time slot offset lower limit corresponding to the second BWP. Whether the fourth indication information indicates one of the plurality of time slot offset lower limits is determined in advance by the radio resource configuration information.

[0199] Optionally, the method further includes starting a timer.

[0200] The terminal device can start the timer after receiving the first indication information.

[0201] In one example, in the case where the timer is timing, the time slot offset lower limit used by the terminal device is the time slot offset lower limit corresponding to the target index. In the case where the timer is timing and new indication information is received, and the new indication information indicates one of the plurality of time slot offset lower limits, the terminal device can set the timer to re-time and determine a new time slot offset lower limit according to the new indication information. In the case where the timer timing is completed (timing is stopped), the time slot offset lower limit used by the terminal device is the time slot offset lower limit corresponding to the second BWP.

[0202] Optionally, the time slot offset lower limit corresponding to the second BWP is the minimum time slot offset lower limit in the time domain resource allocation list on the second BWP.

[0203] That is, the network device does not need to separately configure the time slot offset lower limit corresponding to the second BWP in the configuration parameters of the second BWP. Both the network device and the terminal device can determine the time slot offset lower limit corresponding to the second BWP according to the TDRA list in the configuration parameters of the second BWP. The TDRA list contains a plurality of time slot offsets and a plurality of indexes corresponding one by one to the plurality of time slot offsets. That is, the network device can use any time slot offset in the TDRA list of the second BWP when scheduling resources for the terminal device on the second BWP, and therefore can regard the minimum value of the time slot offset in the TDRA list of the second BWP as the time slot offset lower limit of the second BWP.

[0204] ​In the present application, the target signal can be one or more of CSI-RS, PDCCH, PDSCH, SRS, PUCCH (including channel state information (CSI), hybrid automatic repeat request-acknowledgement (HARQ-ACK), PUSCH).

[0205] In the embodiments of the present application, since the frequency domain positions and bandwidths of the two BWPs before and after switching are the same, the actual BWP switching delay required by the terminal device is very short, and can even be as low as zero. If no signaling interaction occurs between the network device and the terminal device in the agreed BWP switching delay, it will undoubtedly result in waste of time-frequency resources and increase the transmission delay. Therefore, when the network device judges that the frequency domain position and bandwidth of the first BWP are the same as the frequency domain position and bandwidth of the second BWP, it can be considered that the actual BWP switching delay required by the terminal device is very short, and the target signal can be sent or received before the first data channel is sent, avoiding waste of time-frequency resources and also avoiding additional increase of transmission delay. Correspondingly, when the terminal device judges that the frequency domain position and bandwidth of the first BWP are the same as the frequency domain position and bandwidth of the second BWP, it can perform BWP switching as soon as possible, so that the target signal can continue to be received or sent on the new BWP before the first data channel is received or sent, avoiding waste of time-frequency resources and also avoiding additional increase of transmission delay.

[0206] The network device can indicate the transmission of data on the PDSCH or PUSCH through the DCI. When the DCI and the PDSCH are located in the same time slot, the DCI scheduling the PDSCH / PUSCH belongs to same-slot scheduling; when the DCI and the PDSCH are located in different time slots, the DCI scheduling the PDSCH / PUSCH belongs to cross-slot scheduling. The DCI can indicate the time slot offset K0 between the time slot where the DCI is located and the time slot where the PDSCH scheduled by the DCI is located. The DCI can indicate the time slot offset K2 between the time slot where the DCI is located and the time slot where the PUSCH scheduled by the DCI is located. In order to save energy consumption, the network device can pre-instruct the terminal device through RRC to indicate the time slot offset lower limit K 0min , that is, the minimum value of the time slot offset of the terminal device, that is, the time slot offset K0 is greater than or equal to K 0min . For example, when the time slot offset lower limit K 0min is 1, it means that K0≥1, so the DCI scheduling the PDSCH will not belong to same-slot scheduling, and after the terminal device receives the DCI, it can know whether the scheduling of the DCI belongs to same-slot scheduling even without decoding the DCI. Similarly, the network device can pre-instruct the terminal device to indicate the time slot offset lower limit K2min , which is the minimum value of the time slot offset indicated by the terminal device, that is, the time slot offset K2 is greater than or equal to K 2min . In this application, if not specified, the lower limit of the time slot offset can be the lower limit of the downlink time slot offset K 0min and the lower limit of the uplink time slot offset K 2min .

[0207] Three methods for determining the lower limit of the time slot offset are introduced below.

[0208] Method one: associate the BWP with the lower limit of the time slot offset, that is, each BWP corresponds to a time slot offset lower limit, when the DCI indicates switching to the target BWP, the time slot offset lower limit after completing the BWP switching can be determined as the time slot offset lower limit corresponding to the target BWP. For example, the time slot offset lower limit corresponding to BWP1 is K 0min 1, the time slot offset lower limit corresponding to BWP2 is K 0min 2; when the terminal device uses BWP1, the time slot offset lower limit used by the terminal device is K 0min 1; when the terminal device switches from BWP1 to BWP2, the time slot offset lower limit used by the terminal device after completing the BWP switching is K 0min 2.

[0209] Method two: the network device sends RRC to the terminal device, the RRC contains multiple time slot offset lower limits and index values corresponding to the multiple time slot offset lower limits one by one, and indicates the time slot offset lower limit used later through the index value carried in the DCI. For example, the index of K 0min 1 is index 1, the index of K 0min 2 is index 2, and the index of K 0min 3 is index 3; when the DCI carries the information of index 1, the terminal device can determine that the time slot offset lower limit used after receiving the DCI is K 0min 1.

[0210] Method three: the network device sends RRC to the terminal device, the RRC contains two time slot offset lower limits, one of which corresponds to the same time slot scheduling, and the other of which corresponds to the cross time slot scheduling. When the terminal device receives the DCI, the terminal device takes the time slot offset lower limit corresponding to the same time slot scheduling as the time slot offset lower limit used later, and starts a timer. When the timer stops counting, that is, no DCI scheduling data is received within a period of time, the terminal device takes the time slot offset lower limit corresponding to the cross time slot scheduling as the time slot offset lower limit used later. For example, the RRC configures K 0min 1 and K 0min 2, K 0min 1 = 0, and K 0min 2 > K0min 1;When the terminal device receives DCI1, the terminal device can determine that the time slot offset lower limit used after receiving the DCI1 is K 0min 1, and start a timer; when receiving DCI2 before the timer stops timing, the terminal device sets the timer to re-time, and determines that the time slot offset lower limit used after receiving the DCI2 is K 0min 1; when no new DCI is received before the timer stops timing, the terminal device can determine that the time slot offset lower limit used after the timer stops timing is K 0min 2.

[0211] When the network device configures the time slot offset lower limit corresponding to the BWP for the terminal device through method one, and indicates the time slot offset lower limit irrelevant to the BWP to the terminal device through method two or method three, the terminal device will be contradictory and cannot determine which way to determine the time slot offset lower limit.

[0212] For example, the time slot offset lower limit corresponding to BWP1 is K 0min 0, RRC configures K 0min 1 with index 1, K 0min 2 with index 2, and K 0min 0≠K 0min 1; when the terminal device receives DCI1, the terminal device cannot determine whether the time slot offset lower limit used after receiving the DCI1 is K 0min 0 or K 0min 1.

[0213] For another example, the time slot offset lower limit corresponding to BWP1 is K 0min 0, RRC configures K 0min 1 and K 0min 2, K 0min 1=0, and K 0min 0≠K 0min 1; when the terminal device receives DCI1, the terminal device cannot determine whether the time slot offset lower limit used after receiving the DCI1 is K 0min 0 or K 0min 1.

[0214] For another example, the time slot offset lower limit corresponding to BWP1 is K 0min 0, RRC configures K 0min 1 and K 0min 2, K 0min 1=0, and K 0min 2≠K 0min 1; when the timer stops timing, the terminal device cannot determine whether the time slot offset lower limit used after the timer stops timing is K 0min 2 or K 0min 0.

[0215] Figure 8 A method for determining a time slot offset lower limit is shown.

[0216] 901, the network device sends third radio resource control information for indicating the first time slot offset lower limit.

[0217] Correspondingly, the terminal device acquires the first time slot offset lower limit indicated by the third radio resource control information.

[0218] That is, the network device configures the first time slot offset lower limit for the terminal device through RRC.

[0219] In the present application, "acquire" can be understood as receiving, or reading from the memory.

[0220] Optionally, the third radio resource control information is also used for indicating a second time slot offset lower limit.

[0221] That is, the third radio resource control information indicates multiple time slot offset lower limits.

[0222] Optionally, the first time slot offset lower limit is smaller than the second time slot offset lower limit.

[0223] That is, if the terminal device uses the first time slot offset lower limit, the power consumption of the terminal device will be increased; if the terminal device uses the second time slot offset lower limit, the time delay of the terminal device in processing information will be prolonged.

[0224] In one example, the first time slot offset lower limit can correspond to same-slot scheduling, and the second time slot offset lower limit corresponds to cross-slot scheduling. When the first time slot offset lower limit corresponds to same-slot scheduling, the value of the first time slot offset lower limit is 0, and the value of the second time slot offset lower limit is greater than 0.

[0225] Optionally, the third radio resource control information indicates multiple time slot offset lower limits and multiple time slot offset lower limit indexes corresponding to the multiple time slot offset lower limits one by one, and the multiple time slot offset lower limits include the first time slot offset lower limit.

[0226] 902, the network device sends second indication information, and the second indication information indicates scheduling information of a second data channel.

[0227] Correspondingly, the terminal device receives the second indication information.

[0228] That is, the network device configures resources for the second data channel through the second indication information.

[0229] The scheduling information of the second data channel may, for example, include an index of a time domain resource and / or a frequency domain resource for transmitting the second data channel. The scheduling information of the second data channel may, for example, include a time slot offset between a starting position of a time slot where the second indication information is located and a starting position of a time slot where the second data channel is located. According to the second indication information, the terminal device can determine a resource for receiving or transmitting the second data channel.

[0230] The second indication information may be DCI.

[0231] The second data channel may be a PUSCH or a PDSCH.

[0232] 903a, in the case where the second indication information also indicates switching to a third BWP, the network device determines that the target time slot offset lower limit is a time slot offset lower limit corresponding to the third BWP.

[0233] Correspondingly, in the case where the second indication information also indicates switching to a third BWP, the terminal device determines that the target time slot offset lower limit is a time slot offset lower limit corresponding to the third BWP.

[0234] That is, when the second indication information indicates BWP switching, the network device takes the time slot offset lower limit corresponding to the third BWP as the time slot offset lower limit used after switching to the third BWP.

[0235] For example, the network device configures the terminal device with the time slot offset lower limit corresponding to the third BWP as K 0min 0, when the DCI indicates switching to the third BWP, the network device takes K 0min 0 as the time slot offset lower limit used after switching to the third BWP.

[0236] In this application, the target time slot offset lower limit can be understood as a target time slot offset lower limit used by the terminal device subsequently, that is, the terminal device determines the target time slot offset lower limit to correct the currently used time slot offset lower limit.

[0237] As shown in FIG. 9B, in the case where the second indication information contains indication of switching to a third BWP and contains scheduling information of a second data channel, the network device determines that the target time slot offset lower limit is a time slot offset lower limit corresponding to the third BWP. Figure 9 As shown in FIG. 9B, in the case where the second indication information contains indication of switching to a third BWP and contains scheduling information of a second data channel, the network device determines that the target time slot offset lower limit is a time slot offset lower limit corresponding to the third BWP. Figure 9 As shown in FIG. 9B, in the case where the second indication information contains indication of switching to a third BWP and contains scheduling information of a second data channel, the network device determines that the target time slot offset lower limit is a time slot offset lower limit corresponding to the third BWP. Figure 9 As shown in FIG. 9B, in the case where the second indication information contains indication of switching to a third BWP and contains scheduling information of a second data channel, the network device determines that the target time slot offset lower limit is a time slot offset lower limit corresponding to the third BWP. 0min 0, the network device takes the time slot offset lower limit corresponding to the third BWP as the target time slot offset lower limit before receiving the fifth indication information for the first time on the third BWP. The network device can process the fifth indication information according to the time slot offset lower limit corresponding to the third BWP, that is, the terminal device receives the fifth indication information at time slot n, and the target time slot offset lower limit is the time slot offset lower limit corresponding to the third BWP at time slot n+K 0minThe decoding of the fifth indication information is completed before the 0. And, since the target slot offset lower limit is the slot offset lower limit used by the third BWP, the slot where the fifth data channel is located can be slot n+K 0min a slot after the 0.

[0238] Optionally, the slot offset lower limit corresponding to the third BWP is the minimum slot offset lower limit in the time domain resource allocation list on the third BWP.

[0239] That is, the network device does not need to separately configure the slot offset lower limit corresponding to the third BWP in the configuration parameter of the third BWP, and both the network device and the terminal device can determine the slot offset lower limit corresponding to the third BWP according to the TDRA list in the configuration parameter of the third BWP. The TDRA list contains a plurality of slot offsets and a plurality of indexes corresponding to the plurality of slot offsets one by one, that is, the network device can use any slot offset in the TDRA list of the third BWP when scheduling resources for the terminal device on the third BWP, and therefore the minimum value of the slot offset in the TDRA list of the third BWP can be regarded as the slot offset lower limit of the third BWP.

[0240] 903b, in the case where the second indication information does not indicate switching to the third BWP, the network device determines that the target slot offset lower limit is the first slot offset lower limit.

[0241] Correspondingly, in the case where the second indication information does not indicate switching to the third BWP, the terminal device determines that the target slot offset lower limit is the first slot offset lower limit.

[0242] That is, when the network device does not indicate BWP switching, the network device regards the first slot offset lower limit indicated by the RRC as the slot offset lower limit used after receiving the second indication information.

[0243] The following introduces three ways in which the terminal device and / or the network device determines the target slot offset lower limit in the case where no BWP switching indication information is received through three possible scenarios.

[0244] Method one

[0245] The third radio resource control information indicates the first slot offset lower limit, the terminal device receives second indication information on the fifth BWP currently being used, the second indication information indicates the scheduling information of the second data channel, and the second indication information does not indicate switching to the third BWP. Then, the terminal device determines, according to the indication of the network device, that the target slot offset lower limit used after receiving the second indication information is the first slot offset lower limit.

[0246] Optionally, the method further includes starting a timer.

[0247] The terminal device can start a timer after receiving the second indication information. When the timer is timing, the time slot offset lower limit used by the terminal device is the first time slot offset lower limit. When new indication information is received while the timer is timing, the terminal device can set the timer to re-timing. When the timer stops timing, the time slot offset lower limit used by the terminal device is the time slot offset lower limit corresponding to the fifth BWP.

[0248] Method two

[0249] The third radio resource control information indicates a first time slot offset lower limit and a second time slot offset lower limit, the first time slot offset lower limit being smaller than the second time slot offset lower limit. The terminal device receives second indication information on the fifth BWP currently being used by the terminal device, the second indication information indicating scheduling information of a second data channel, and the second indication information not indicating switching to a third BWP. Then, the terminal device determines, according to the indication of the network device, that the target time slot offset lower limit used after receiving the second indication information is the first time slot offset lower limit.

[0250] Optionally, the method further includes starting a timer.

[0251] The terminal device can start a timer after receiving the second indication information.

[0252] In one example, the timer starts timing from 0. When the timing of the timer is less than a preset threshold 1 (the preset threshold 1 is not zero), the time slot offset lower limit used by the terminal device is the first time slot offset lower limit. When the timing of the timer is greater than or equal to the preset threshold 1, the terminal device compares the second time slot offset lower limit with the time slot offset lower limit corresponding to the fifth BWP. If the second time slot offset lower limit < the time slot offset lower limit corresponding to the fifth BWP, then when the timing of the timer is greater than or equal to a preset threshold 2, the time slot offset lower limit used by the terminal device is the time slot offset lower limit corresponding to the fifth BWP. If the second time slot offset lower limit > the time slot offset lower limit corresponding to the fifth BWP, then when the timing of the timer is greater than or equal to the preset threshold 2, the time slot offset lower limit used by the terminal device is the second time slot offset lower limit. When new indication information is received while the timing of the timer is less than the preset threshold 2, the terminal device can set the timing of the timer to 0 and continue timing. The method of counting down the timer is similar to the method of starting the timer from zero, and will not be described here.

[0253] In one example, when the timer is timing, the terminal device uses the first time slot offset lower limit as the time slot offset lower limit. When the terminal device receives new indication information while the timer is timing, the terminal device can set the timer to restart timing. When the timer stops timing, the terminal device uses the second time slot offset lower limit as the time slot offset lower limit. When the terminal device receives new indication information while the timer stops timing, the terminal device can set the timer to restart timing.

[0254] Method three

[0255] The third radio resource control information indicates a plurality of time slot offset lower limits and a plurality of time slot offset lower limit indexes corresponding to the plurality of time slot offset lower limits, and the plurality of time slot offset lower limits includes the first time slot offset lower limit. The terminal device receives second indication information on the fifth BWP currently being used, the second indication information indicates scheduling information of a second data channel, the second indication information does not indicate switching to a third BWP, and the second indication information indicates a time slot offset lower limit index corresponding to the first time slot offset lower limit. Then, the terminal device determines, according to the indication of the network device, that the target time slot offset lower limit used after receiving the second indication information is the first time slot offset lower limit.

[0256] Optionally, the method further includes starting a timer.

[0257] The terminal device can start the timer after receiving the second indication information.

[0258] In one example, when the timer is timing, the terminal device uses the first time slot offset lower limit as the time slot offset lower limit. When the terminal device receives new indication information while the timer is timing, and the new indication information indicates one of the plurality of time slot offset lower limits, the terminal device can set the timer to restart timing, and determine a new time slot offset lower limit according to the new indication information. When the timer stops timing, the terminal device uses the time slot offset lower limit corresponding to the fifth BWP as the time slot offset lower limit.

[0259] The method of counting down the timer is similar to the method of counting up the timer from zero, which will not be described here.

[0260] In the embodiments of the present application, by Figure 8 As shown in the embodiments, the terminal device can determine the time slot offset lower limit used subsequently according to the content of the indication information, which is beneficial to switching the time slot offset lower limit value to the time slot offset lower limit value corresponding to the power saving mode (also referred to as cross-slot scheduling) by using the new BWP, instead of switching to the time slot offset lower limit value corresponding to the power consumption mode (also referred to as intra-slot scheduling) when there is data scheduling.

[0261] In another possible implementation, the terminal device can be configured by the RRC to specify that, in a case where the second indication information contains an indication to switch to the third BWP and contains information indicating a target index, the network device determines that the target time slot offset lower limit is the time slot offset lower limit corresponding to the third BWP. In a case where the second indication information contains an indication to switch to the third BWP and does not contain information indicating a target index, the terminal device does not perform BWP switching. The value of the target index can be specified as a fixed value (for example, the value of a two-bit target index is fixed as "00"). In this way, the false alarm probability of the BWP switching indication can be reduced, that is, the network device does not send the BWP switching indication, but the terminal device detects the BWP switching indication. If the detected index is not the target index, the terminal device can consider the BWP switching indication as a false alarm.

[0262] Figure 10 Fig. 1 shows a schematic flowchart of a communication method according to an embodiment of the application.

[0263] 1101. The network device sends fourth radio resource control information containing a plurality of time slot offset lower limits and a plurality of indexes corresponding one by one to the plurality of time slot offset lower limits.

[0264] Correspondingly, the terminal device receives the fourth radio resource control information.

[0265] That is, the network device configures a plurality of time slot offset lower limits for the terminal device by RRC, and the network device can indicate one of the plurality of time slot offset lower limits to the terminal device by indicating an index.

[0266] 1102. The network device sends third indication information containing information indicating switching to a fourth BWP.

[0267] Correspondingly, the terminal device receives the third indication information.

[0268] That is, the network device instructs the terminal device to perform BWP switching, and the switched BWP is the fourth BWP.

[0269] 1103a. In a case where the third indication information further contains information indicating a target index, the network device determines that the target time slot offset lower limit is the time slot offset lower limit corresponding to the target index, and the target index is one of the plurality of indexes.

[0270] Correspondingly, in a case where the third indication information further contains information indicating a target index, the terminal device determines that the target time slot offset lower limit is the time slot offset lower limit corresponding to the target index, and the target index is one of the plurality of indexes.

[0271] That is, if the third indication information indicates the target index corresponding to the RRC configured slot offset lower limit, the slot offset lower limit used by the terminal device after switching to the fourth BWP is the slot offset lower limit corresponding to the target index.

[0272] In a case where the third indication information contains information indicating switching to the fourth BWP and contains information indicating the target index, the network device determines that the target slot offset lower limit is the slot offset lower limit corresponding to the target index. As shown in Figure 9 the slot offset lower limit corresponding to the target index is K 0min 0, the target slot offset lower limit is the slot offset lower limit corresponding to the target index before the network device first receives the sixth indication information on the fourth BWP. The network device can process the sixth indication information according to the slot offset lower limit corresponding to the target index, that is, the terminal device receives the sixth indication information in slot n and completes decoding of the sixth indication information before slot n+K 0min 0. And since the target slot offset lower limit is the slot offset lower limit corresponding to the target index, the slot where the sixth data channel is located can be a slot after slot n+K 0min 0.

[0273] 1103b, in a case where the third indication information does not contain information indicating the target index, the network device determines that the target slot offset lower limit is the slot offset lower limit corresponding to the fourth BWP.

[0274] Correspondingly, in a case where the third indication information does not contain information indicating the target index, the terminal device determines that the target slot offset lower limit is the slot offset lower limit corresponding to the fourth BWP.

[0275] That is, if the third indication information does not indicate the target index corresponding to the RRC configured slot offset lower limit, the slot offset lower limit used by the terminal device after switching to the fourth BWP is the slot offset lower limit corresponding to the fourth BWP.

[0276] In a case where the third indication information contains information indicating switching to the fourth BWP and does not contain information indicating the target index, the network device determines that the target slot offset lower limit is the slot offset lower limit corresponding to the fourth BWP. The slot offset lower limit corresponding to the fourth BWP is K 0min 0, the target slot offset lower limit is the slot offset lower limit corresponding to the fourth BWP before the network device first receives the sixth indication information on the fourth BWP. The network device can process the sixth indication information according to the slot offset lower limit corresponding to the fourth BWP, that is, the terminal device receives the sixth indication information in slot n and completes decoding of the sixth indication information before slot n+K 0minThe decoding of the sixth indication information is completed before the time slot 0. And since the target time slot offset lower limit is the time slot offset lower limit used by the fourth BWP, the time slot where the fifth data channel is located can be time slot n+K 0min a time slot after the time slot 0.

[0277] Figure 11 FIG. 1 is a structural schematic diagram of a communication apparatus provided by an embodiment of the present application. The communication apparatus can be a terminal device, or can be a component (for example, a chip or a circuit) that can be used in a terminal device. As shown in FIG. 1, the communication apparatus 1000 can include a receiving module 1001 and a processing module 1002. Figure 11 The receiving module 1001 can be implemented by a receiver. The specific functions and advantages of the receiving module 1001 can refer to the specific functions and advantages of the receiving module in the method shown in FIG. 2, which will not be described here again.

[0278] The receiving module 1001 is configured to receive first indication information on a first time domain resource and a first bandwidth part (BWP), where the first indication information indicates switching to a second BWP, and indicates receiving or sending a first data channel on a second time domain resource, and a frequency domain location and a bandwidth of the first BWP are the same as a frequency domain location and a bandwidth of the second BWP.

[0279] The receiving module 1001 is further configured to receive or send a target signal on a frequency domain resource corresponding to the first BWP or the second BWP on a time domain resource after the end of the first time domain resource and before the start of a time slot where the second time domain resource is located, according to the first transmission information, and receive or send the first target signal.

[0280] The receiving module 1001 can be implemented by a receiver. The specific functions and advantages of the receiving module 1001 can refer to the specific functions and advantages of the receiving module in the method shown in FIG. 2, which will not be described here again. Figure 3 The specific functions and advantages of the processing module 1002 can refer to the specific functions and advantages of the processing module in the method shown in FIG. 2, which will not be described here again.

[0281] In a possible embodiment, a communication apparatus is also provided, which can be a terminal device, or can be a component (for example, a chip or a circuit, etc.) used in a terminal device. The communication apparatus can include a transceiver and a processor, and optionally can also include a memory. The transceiver can be used to implement the corresponding functions and operations of the receiving module and the sending module described above, and the processor can be used to implement the corresponding functions and operations of the processing module described above. The memory can be used to store execution instructions or application program codes, and is controlled by the processor to perform, to implement the communication method provided by the embodiments of the present application; and / or, can also be used to temporarily store some data and instruction information, etc. The memory can exist independently of the processor, at this time, the memory can be connected with the processor through a communication line. In another possible design, the memory can also be integrated with the processor, and the embodiments of the present application do not make any limitation in this regard.

[0282] Figure 12is a structural schematic diagram of a communication apparatus provided by an embodiment of the present application. The communication apparatus can be a network device, or a component (for example, a chip or a circuit) that can be used in a network device. As shown in Figure 12 The communication apparatus 1300 can include a transceiver module 1301.

[0283] The transceiver module 1301 is configured to transmit first indication information on a first bandwidth part (BWP) in a first time domain resource, where the first indication information indicates switching to a second BWP and indicates receiving or transmitting a first data channel in a second time domain resource, and the frequency domain location and bandwidth of the first BWP are the same as those of the second BWP.

[0284] The transceiver module 1301 is further configured to receive or transmit a target signal on the frequency domain resource corresponding to the first BWP or the second BWP in a time domain resource after the end of the first time domain resource and before the start of the time slot where the second time domain resource is located.

[0285] The transceiver module 1301 can be implemented by a receiver and / or a transmitter. For specific functions and advantages of the transceiver module 1301, refer to Figure 3 The method shown in the above embodiment will not be repeated here.

[0286] In a possible embodiment, a communication apparatus is also provided, which can be a network device, or a component (for example, a chip or a circuit) that can be used in a network device. The communication apparatus can include a transceiver and a processor, and optionally, a memory. The transceiver can be configured to implement the corresponding functions and operations of the receiving module and the transmitting module described above, and the processor can be configured to implement the corresponding functions and operations of the processing module described above. The memory can be configured to store execution instructions or application program codes, and to be controlled by the processor to perform the communication method provided by the embodiments of the present application, and / or can be configured to temporarily store some data and instruction information, etc. The memory can exist independently of the processor, and in this case, the memory can be connected to the processor through a communication line. In another possible design, the memory can also be integrated with the processor, and the embodiments of the present application do not limit this.

[0287] Figure 13 is a structural schematic diagram of a communication apparatus provided by an embodiment of the present application. The communication apparatus can be a terminal device, or a component (for example, a chip or a circuit) that can be used in a terminal device. As shown in Figure 13 The communication apparatus 1400 can include an obtaining module 1401, a receiving module 1402, and a processing module 1403.

[0288] The obtaining module 1401 is configured to obtain a first time slot offset lower limit indicated by third radio resource control information.

[0289] The receiving module 1402 is configured to receive second indication information, where the second indication information indicates scheduling information of a second data channel.

[0290] The processing module 1403 is configured to determine the target time slot offset lower limit as a time slot offset lower limit corresponding to a third BWP in a case where the second indication information further indicates switching to the third BWP; otherwise, the processing module 1403 is configured to determine the target time slot offset lower limit as the first time slot offset lower limit.

[0291] The obtaining module 1401 can be implemented by a receiver and / or a processor. The receiving module 1402 can be implemented by a receiver. The processing module 1403 can be implemented by a processor. For specific functions and advantages of the obtaining module 1401, the receiving module 1402, and the processing module 1403, refer to Figure 8 the method shown in the above description, which will not be repeated here.

[0292] In a possible embodiment, a communication apparatus is also provided, which can be a terminal device, or can be a component (such as a chip or circuit, etc.) for a terminal device. The communication apparatus can include a transceiver and a processor, and optionally, a memory. The transceiver can be configured to implement the corresponding functions and operations of the receiving module and the sending module described above, and the processor can be configured to implement the corresponding functions and operations of the processing module described above. The memory can be configured to store execution instructions or application program codes, and to be controlled by the processor to perform the communication method provided by the embodiments of the present application; and / or, can also be configured to temporarily store some data and instruction information, etc. The memory can exist independently of the processor, in which case the memory can be connected to the processor through a communication line. In another possible design, the memory can also be integrated with the processor, and the embodiments of the present application do not limit this.

[0293] Figure 14 FIG. 1 is a structural schematic diagram of a communication apparatus provided by an embodiment of the present application. The communication apparatus can be a network device, or can be a component (such as a chip or circuit) for a network device. As Figure 14 shown in FIG. 1, the communication apparatus 1500 can include a sending module 1501 and a processing module 1502.

[0294] The sending module 1501 is configured to send third radio resource control information used for indicating a first time slot offset lower limit.

[0295] The sending module 1501 is further configured to send second indication information, where the second indication information indicates scheduling information of a second data channel.

[0296] The processing module 1502 is configured to determine the target time slot offset lower limit as a time slot offset lower limit corresponding to a third BWP in a case where the second indication information further indicates switching to the third BWP; otherwise, the processing module 1502 is configured to determine the target time slot offset lower limit as the first time slot offset lower limit.

[0297] The sending module 1501 can be implemented by a transmitter. The processing module 1502 can be implemented by a processor. For specific functions and advantages of the sending module 1501 and the processing module 1502, refer to Figure 8 The method shown in the foregoing embodiments can be implemented by using the corresponding apparatuses. Therefore, details of the method are not described in the embodiments of the apparatus.

[0298] In a possible embodiment, a communication apparatus is also provided. The communication apparatus can be a network device, or can be a component (for example, a chip or a circuit, etc.) for a network device. The communication apparatus can include a transceiver and a processor, and optionally, a memory. The transceiver can be configured to implement corresponding functions and operations of the receiving module and the sending module. The processor can be configured to implement corresponding functions and operations of the processing module. The memory can be configured to store execution instructions or application program codes, and to be controlled by the processor to perform the communication method provided in the embodiments of the present application. In addition, the memory can also be configured to temporarily store some data and instruction information, etc. The memory can exist independently of the processor. In this case, the memory can be connected to the processor through a communication line. In another possible design, the memory can also be integrated with the processor. The embodiments of the present application do not limit the same.

[0299] Figure 15 FIG. 16 is a structural schematic diagram of a communication apparatus provided in an embodiment of the present application. The communication apparatus can be a terminal device, or can be a component (for example, a chip or a circuit) for a terminal device. As shown in Figure 15 The communication apparatus 1600 can include a receiving module 1601 and a processing module 1602.

[0300] The receiving module 1601 is configured to receive fourth radio resource control information. The fourth radio resource control information includes a plurality of time slot offset lower limits and a plurality of indexes corresponding to the plurality of time slot offset lower limits.

[0301] The receiving module 1601 is further configured to receive third indication information. The third indication information includes information indicating switching to a fourth BWP.

[0302] The processing module 1602 is configured to determine a target time slot offset lower limit as a time slot offset lower limit corresponding to a target index in a case where the third indication information further includes information indicating the target index. The target index is one of the plurality of indexes.

[0303] Otherwise, the processing module 1602 is configured to determine the target slot offset lower limit as a slot offset lower limit corresponding to the fourth BWP.

[0304] The receiving module 1601 can be implemented by a receiver. The processing module 1602 can be implemented by a processor. For details of the specific functions and advantages of the receiving module 1601 and the processing module 1602, refer to Figure 10 The method shown will not be described here any more.

[0305] In a possible embodiment, a communication apparatus is also provided, which can be a terminal device, or can be a component (such as a chip or circuit, etc.) for a terminal device. The communication apparatus can include a transceiver and a processor, and optionally, a memory. The transceiver can be configured to implement the corresponding functions and operations of the receiving module and the sending module described above, and the processor can be configured to implement the corresponding functions and operations of the processing module described above. The memory can be configured to store execution instructions or application program codes, and to be controlled by the processor to perform the communication method provided by the embodiments of the present application; and / or, can also be configured to temporarily store some data and instruction information, etc. The memory can exist independently of the processor, in which case the memory can be connected to the processor through a communication line. In another possible design, the memory can also be integrated with the processor, and the embodiments of the present application do not limit this.

[0306] Figure 16 FIG. 17 is a structure diagram of a communication apparatus according to an embodiment of the present application. The communication apparatus can be a network device, or can be a component (such as a chip or circuit) for a network device. As shown in Figure 16 The communication apparatus 1700 can include a sending module 1701 and a processing module 1702.

[0307] The sending module 1701 is configured to send fourth radio resource control information, where the fourth radio resource control information includes a plurality of slot offset lower limits and a plurality of indexes corresponding to the plurality of slot offset lower limits in a one-to-one manner.

[0308] The sending module 1701 is further configured to send third indication information, where the third indication information includes information indicating switching to a fourth BWP.

[0309] The processing module 1702, where in a case where the third indication information further includes information indicating a target index, the processing module 1702 is configured to determine a target slot offset lower limit as a slot offset lower limit corresponding to the target index, where the target index is one of the plurality of indexes.

[0310] Otherwise, the processing module 1702 is configured to determine the target time slot offset lower limit as the time slot offset lower limit corresponding to the fourth BWP.

[0311] The sending module 1701 can be implemented by a transmitter. The processing module 1702 can be implemented by a processor. For specific functions and advantages of the sending module 1701 and the processing module 1702, refer to Figure 10 The method shown, here will not be repeated.

[0312] In a possible embodiment, a communication apparatus is also provided, which can be a network device, or can be a component (such as a chip or circuit, etc.) for a network device. The communication apparatus can include a transceiver and a processor, and optionally, a memory. The transceiver can be configured to implement the functions and operations corresponding to the sending module and the sending module as described above, and the processor can be configured to implement the functions and operations of the processing module as described above. The memory can be configured to store execution instructions or application program codes, and to be controlled by the processor to perform the communication method provided by the embodiments of the present application; and / or, can also be configured to temporarily store some data and instruction information, etc. The memory can exist independently of the processor, in which case the memory can be connected to the processor through a communication line. In another possible design, the memory can also be integrated with the processor, and the embodiments of the present application do not limit this.

[0313] Figure 17 is a structural block diagram of a communication apparatus provided by the embodiments of the present application. The communication apparatus can be a terminal device. As Figure 17 shown, the terminal device includes a processor 1801, a memory 1802, radio frequency circuit, an antenna, and an input / output device. The processor 1801 can be configured to process a communication protocol and communication data, control the terminal device, execute a software program, process data of the software program, etc. The memory 1802 is mainly configured to store software programs and data. The radio frequency circuit is mainly configured to convert a baseband signal and a radio frequency signal, and process the radio frequency signal. The antenna is mainly configured to transceive a radio frequency signal in the form of an electromagnetic wave. The input / output device, such as a touch screen, a display screen, a keyboard, etc. is mainly configured to receive data input by a user and output data to the user. It should be noted that some types of terminal devices can not have an input / output device.

[0314] When data needs to be sent, the processor 1801 performs baseband processing on the data to be sent, and outputs a baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal, and sends the radio frequency signal in the form of an electromagnetic wave through an antenna. When data is sent to the terminal device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data. For the sake of illustration, Figure 17 Only one memory and one processor are shown in the above embodiments of the present application. In actual terminal device products, there can be one or more processors and one or more memories. The memory can also be referred to as a storage medium or a storage device, etc. The memory can be independent of the processor, or can be integrated with the processor. The embodiments of the present application do not limit this.

[0315] In the embodiments of the present application, the antenna and the radio frequency circuit with transceiving functions can be regarded as a transceiver 1803 of the terminal device, and the processor with processing functions can be regarded as a processing unit of the terminal device. The transceiver can also be referred to as a transceiving unit, a transceiver, a transceiving device, etc. The processing unit can also be referred to as a processor, a processing board, a processing module, a processing device, etc. Optionally, the devices for realizing the receiving function in the transceiver 1803 can be regarded as a receiving unit, and the devices for realizing the sending function in the transceiver 1803 can be regarded as a sending unit, that is, the transceiver 1803 includes the receiving unit and the sending unit. The receiving unit can also be referred to as a receiver, a receiver, or a receiving circuit, etc. The sending unit can also be referred to as a transmitter, a transmitter, or a transmitting circuit, etc.

[0316] The processor 1801, the memory 1802, and the transceiver 1803 communicate with each other through internal connection paths, and transmit control and / or data signals.

[0317] The method disclosed in the above embodiments of the present application can be applied to the processor 1801, or implemented by the processor 1801. The processor 1801 can be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above method can be completed by integrated logic circuits or instruction forms of software in the processor 1801.

[0318] The processor in the embodiments of the present application can be a general processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can be any conventional processor. The steps of the method disclosed in combination with the embodiments of the present application can be directly embodied as a hardware coding processor for execution, or a combination of hardware and software modules in the coding processor for execution. The software module can be located in a random access memory (RAM), a flash memory, a read-only memory (ROM), a programmable read-only memory or an electrically erasable programmable memory, a register, and other mature storage media in the art. The storage medium is located in the storage, and the processor reads the instructions in the storage and combines the hardware to complete the steps of the above method.

[0319] Optionally, in some embodiments, the memory 1802 can store instructions for performing the method executed by the terminal device in the method shown in Figure 3 、 8 10. The processor 1801 can execute the instructions stored in the memory 1802 to complete the steps executed by the terminal device in the method shown in Figure 3 、 8 10 in combination with other hardware (such as the transceiver 1803), and the specific working process and beneficial effects can refer to the description in the embodiments shown in Figure 3 、 8 10.

[0320] The embodiments of the present application also provide a chip, which includes a transceiving unit and a processing unit. Wherein, the transceiving unit can be an input and output circuit, a communication interface; the processing unit is a processor or microprocessor or integrated circuit integrated on the chip. The chip can execute the method of the terminal device side in the above method embodiment.

[0321] The embodiments of the present application also provide a computer readable storage medium, which stores instructions, and the instructions are executed to execute the method of the terminal device side in the above method embodiment.

[0322] The embodiments of the present application also provide a computer program product containing instructions, and the instructions are executed to execute the method of the terminal device side in the above method embodiment.

[0323] Figure 18 is a structure block diagram of a communication apparatus provided by an embodiment of the present application. The communication apparatus can be a network device. As shown in Figure 18 the network device includes a processor 1901, a memory 1902, radio frequency circuitry, an antenna, and an input / output apparatus. The processor 1901 can be used to process communication protocols and communication data, control the network device, execute software programs, process data of the software programs, and the like. The memory 1902 is mainly used to store software programs and data. The radio frequency circuitry is mainly used for conversion between baseband signals and radio frequency signals and processing of the radio frequency signals. The antenna is mainly used to transceive radio frequency signals in the form of electromagnetic waves. The input / output apparatus, such as a touch screen, a display screen, a keyboard, and the like, is mainly used to receive data input by a user and output data to the user. It should be noted that some types of network devices can not have the input / output apparatus.

[0324] When data needs to be sent, the processor 1901 performs baseband processing on the data to be sent, and outputs a baseband signal to the radio frequency circuitry. The radio frequency circuitry performs radio frequency processing on the baseband signal, and transmits a radio frequency signal in the form of electromagnetic waves to the outside through the antenna. When data is sent to the network device, the radio frequency circuitry receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data. For the sake of brevity, Figure 18 only one memory and one processor are shown in the figure. In actual network device products, there can be one or more processors and one or more memories. The memory can also be referred to as a storage medium or a storage device, and the like. The memory can be independent of the processor or integrated with the processor, and the embodiments of the present application do not limit this.

[0325] In the embodiments of the present application, the antenna and the radio frequency circuitry with transceiving functions can be regarded as a transceiver 1903 of the network device, and the processor with processing functions can be regarded as a processing unit of the network device. The transceiver can also be referred to as a transceiving unit, a transceiver, a transceiving apparatus, and the like. The processing unit can also be referred to as a processor, a processing board, a processing module, a processing apparatus, and the like. Optionally, the devices for realizing the receiving function in the transceiver 1903 can be regarded as a receiving unit, and the devices for realizing the sending function in the transceiver 1903 can be regarded as a sending unit, that is, the transceiver 1903 includes the receiving unit and the sending unit. The receiving unit can also be referred to as a receiver, a receiver, or a receiving circuit, and the like. The sending unit can also be referred to as a transmitter, a transmitter, or a transmitting circuit, and the like.

[0326] The processor 1901, the memory 1902, and the transceiver 1903 communicate with each other through internal connection paths to transfer control and / or data signals.

[0327] The method disclosed in the embodiments of the present application can be applied to the processor 1901 or implemented by the processor 1901. The processor 1901 can be an integrated circuit chip having a signal processing capability. In the implementation process, the steps of the method can be completed by the integrated logic circuits or the instructions in the form of software in the processor 1901.

[0328] The processor in the embodiments of the present application can be a general processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. The disclosed methods, steps and logic block diagrams in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can be any conventional processor. The steps of the method disclosed in combination with the embodiments of the present application can be directly embodied as a hardware coding processor for execution, or a combination of hardware and software modules in the coding processor. The software module can be located in a random access memory (RAM), a flash memory, a read-only memory (ROM), a programmable read-only memory or an electrically erasable programmable memory, a register, and other mature storage media in the art. The storage medium is located in the storage, and the processor reads the instructions in the storage and combines the hardware to complete the steps of the above method.

[0329] Optionally, in some embodiments, the memory 1902 can store instructions for performing the method executed by the network device in the method shown in Figure 3 、 8 or 10. The processor 1901 can execute the instructions stored in the memory 1902 to complete the steps executed by the network device in the method shown in Figure 3 、 8 or 10 in combination with other hardware (such as the transceiver 1903), and the specific working process and beneficial effects can refer to the description in the embodiments of Figure 3 、 8 or 10

[0330] The embodiments of the present application also provide a chip, which includes a transceiver unit and a processing unit. The transceiver unit can be an input and output circuit, a communication interface; the processing unit is an integrated processor or microprocessor or integrated circuit on the chip. The chip can execute the method of the network device side in the above method embodiments.

[0331] The embodiment of the present application further provides a computer readable storage medium, which stores instructions, and the instructions are executed to perform the method of the network device side in the method embodiment.

[0332] The embodiment of the present application further provides a computer program product containing instructions, and the instructions are executed to perform the method of the network device side in the method embodiment.

[0333] Those skilled in the art can understand that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized in electronic hardware or a combination of computer software and electronic hardware. Whether the functions are realized in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0334] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

[0335] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or other forms.

[0336] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0337] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit.

[0338] If the functions are implemented in the form of software function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application essentially or the parts that contribute to the prior art or parts of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0339] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A communication method, characterized in that, include: On the first time domain resource, a first indication information is received on the first bandwidth BWP. The first indication information indicates a switch to the second BWP and indicates that a first data channel is received or transmitted on the second time domain resource. The frequency domain position and bandwidth of the first BWP are the same as those of the second BWP. On the time domain resources after the end of the first time domain resource and before the start of the time slot where the second time domain resource is located, the target signal is received or transmitted on the frequency domain resources corresponding to the first BWP or the second BWP.

2. The communication method as described in claim 1, characterized in that, Receiving or transmitting a target signal on the frequency domain resources corresponding to the first BWP or the second BWP on the time domain resources after the end of the first time domain resource and before the start of the time slot where the second time domain resource is located includes: On time domain resources after the target time and before the start of the time slot where the second time domain resource is located, the target signal is received or transmitted on the frequency domain resources corresponding to the first BWP or the second BWP, wherein the target time is located after the end of the first time domain resource and before the start of the time slot where the second time domain resource is located.

3. The communication method as described in claim 1, characterized in that, The number of receiving antennas corresponding to the first BWP is the same as the number of receiving antennas corresponding to the second BWP, and / or the number of multiple-input multiple-output (MIMO) transmission layers corresponding to the first BWP is the same as the number of MIMO transmission layers corresponding to the second BWP.

4. The communication method according to any one of claims 1 to 3, characterized in that, Before receiving the first indication information on the first portion of the bandwidth (BWP) on the first time-domain resource, the method further includes: Receive first radio resource control information, the first radio resource control information including target BWP configuration parameters, the target BWP configuration parameters being used to indicate the first configuration parameters of the first BWP and the second configuration parameters of the second BWP.

5. The communication method according to any one of claims 1 to 3, characterized in that, The method further includes: The target time slot offset lower limit is determined to be the time slot offset lower limit corresponding to the second BWP.

6. The communication method according to any one of claims 1 to 3, characterized in that, Before receiving the first indication information on the first portion of the bandwidth (BWP) on the first time-domain resource, the method further includes: Receive second radio resource control information, the second radio resource control information including multiple time slot offset lower limits and multiple indices that correspond one-to-one with the multiple time slot offset lower limits; If the first indication information also includes information indicating the target index, the method further includes: The target time slot offset lower limit is determined to be the time slot offset lower limit corresponding to the target index, where the target index is one of the plurality of indices.

7. A communication method, characterized in that, include: On the first time domain resource, a first indication information is transmitted on the first bandwidth BWP. The first indication information indicates a switch to the second BWP and indicates that the first data channel is received or transmitted on the second time domain resource. The frequency domain position and bandwidth of the first BWP are the same as those of the second BWP. On the time domain resources after the end of the first time domain resource and before the start of the time slot where the second time domain resource is located, the target signal is received or transmitted on the frequency domain resources corresponding to the first BWP or the second BWP.

8. The communication method as described in claim 7, characterized in that, Receiving or transmitting a target signal on the frequency domain resources corresponding to the first BWP or the second BWP on the time domain resources after the end of the first time domain resource and before the start of the time slot where the second time domain resource is located includes: On time domain resources after the target time and before the start of the time slot where the second time domain resource is located, the target signal is received or transmitted on the frequency domain resources corresponding to the first BWP or the second BWP, wherein the target time is located after the end of the first time domain resource and before the start of the time slot where the second time domain resource is located.

9. The communication method as described in claim 7, characterized in that, The number of receiving antennas corresponding to the first BWP is the same as the number of receiving antennas corresponding to the second BWP, and / or the number of multiple-input multiple-output (MIMO) transmission layers corresponding to the first BWP is the same as the number of MIMO transmission layers corresponding to the second BWP.

10. The communication method according to any one of claims 7 to 9, characterized in that, Before receiving the first indication information on the first portion of the bandwidth (BWP) on the first time-domain resource, the method further includes: Send first radio resource control information, the first radio resource control information including target BWP configuration parameters, the target BWP configuration parameters being used to indicate the first configuration parameters of the first BWP and the second configuration parameters of the second BWP.

11. The communication method according to any one of claims 7 to 9, characterized in that, The method further includes: The target time slot offset lower limit is determined to be the time slot offset lower limit corresponding to the second BWP.

12. The communication method according to any one of claims 7 to 9, characterized in that, Before receiving the first indication information on the first portion of the bandwidth (BWP) on the first time-domain resource, the method further includes: Send a second radio resource control information, the second radio resource control information including multiple time slot offset lower limits and multiple indices that correspond one-to-one with the multiple time slot offset lower limits; If the first indication information also includes information indicating the target index, the method further includes: The target time slot offset lower limit is determined to be the time slot offset lower limit corresponding to the target index, where the target index is one of the plurality of indices.

13. A terminal device, characterized in that, include: The transceiver module is used to receive first indication information on a first time domain resource and a first portion of bandwidth BWP. The first indication information indicates a switch to a second BWP and indicates receiving or transmitting a first data channel on the second time domain resource. The frequency domain position and bandwidth of the first BWP are the same as those of the second BWP. The transceiver module is further configured to receive or transmit a target signal on the frequency domain resources corresponding to the first BWP or the second BWP on the time domain resources after the first time domain resource ends and before the time slot where the second time domain resource is located begins.

14. The terminal device as described in claim 13, characterized in that, The transceiver module is specifically used to receive or transmit a target signal on a time domain resource corresponding to the first BWP or the second BWP, on a time domain resource after the target time and before the start of the time slot where the second time domain resource is located. The target time is located after the end of the first time domain resource and before the start of the time slot where the second time domain resource is located.

15. The terminal device as described in claim 13, characterized in that, The number of receiving antennas corresponding to the first BWP is the same as the number of receiving antennas corresponding to the second BWP, and / or the number of multiple-input multiple-output (MIMO) transmission layers corresponding to the first BWP is the same as the number of MIMO transmission layers corresponding to the second BWP.

16. The terminal device as described in any one of claims 13 to 15, characterized in that, Before the transceiver module receives the first indication information on the first time domain resource, the first portion of the bandwidth (BWP), The transceiver module is further configured to receive first radio resource control information, the first radio resource control information including target BWP configuration parameters, the target BWP configuration parameters being used to indicate the first configuration parameters of the first BWP and the second configuration parameters of the second BWP.

17. The terminal device as described in any one of claims 13 to 15, characterized in that, The terminal device also includes: The processing module is used to determine that the lower limit of the target time slot offset is the lower limit of the time slot offset corresponding to the second BWP.

18. The terminal device as described in any one of claims 13 to 15, characterized in that, Before the transceiver module receives the first indication information on the first time domain resource, the first portion of the bandwidth (BWP), The transceiver module is further configured to receive second radio resource control information, the second radio resource control information including multiple time slot offset lower limits and multiple indices corresponding one-to-one with the multiple time slot offset lower limits; The terminal device also includes: The processing module is configured to determine, when the first indication information further includes information indicating a target index, that the lower limit of the target time slot offset is the lower limit of the time slot offset corresponding to the target index, wherein the target index is one of the plurality of indices.

19. A network device, characterized in that, include: The transceiver module is used to send first indication information on a first time domain resource and a first portion of bandwidth BWP. The first indication information indicates a switch to a second BWP and indicates receiving or sending a first data channel on the second time domain resource. The frequency domain position and bandwidth of the first BWP are the same as those of the second BWP. The transceiver module is further configured to receive or transmit a target signal on the frequency domain resources corresponding to the first BWP or the second BWP on the time domain resources after the first time domain resource ends and before the time slot where the second time domain resource is located begins.

20. The network device as described in claim 19, characterized in that, The transceiver module is specifically used to receive or transmit a target signal on a time domain resource corresponding to the first BWP or the second BWP, on a time domain resource after the target time and before the start of the time slot where the second time domain resource is located. The target time is located after the end of the first time domain resource and before the start of the time slot where the second time domain resource is located.

21. The network device as described in claim 19, characterized in that, The number of receiving antennas corresponding to the first BWP is the same as the number of receiving antennas corresponding to the second BWP, and / or the number of multiple-input multiple-output (MIMO) transmission layers corresponding to the first BWP is the same as the number of MIMO transmission layers corresponding to the second BWP.

22. The network device as described in any one of claims 19 to 21, characterized in that, Before the transceiver module receives the first indication information on the first time domain resource, the first portion of the bandwidth (BWP), The transceiver module is further configured to send first radio resource control information, the first radio resource control information including target BWP configuration parameters, the target BWP configuration parameters being used to indicate the first configuration parameters of the first BWP and the second configuration parameters of the second BWP.

23. The network device as described in any one of claims 19 to 21, characterized in that, The network device also includes: The processing module is used to determine that the lower limit of the target time slot offset is the lower limit of the time slot offset corresponding to the second BWP.

24. The network device as described in any one of claims 19 to 21, characterized in that, Before the transceiver module receives the first indication information on the first time domain resource, the first portion of the bandwidth (BWP), The transceiver module is further configured to send second radio resource control information, the second radio resource control information including multiple time slot offset lower limits and multiple indices corresponding one-to-one with the multiple time slot offset lower limits; If the first indication information also includes information indicating the target index, the network device further includes: The processing module is used to determine that the lower limit of the target time slot offset is the lower limit of the time slot offset corresponding to the target index, wherein the target index is one of the plurality of indices.

25. A communication device, characterized in that, The apparatus includes a module for performing the communication method as described in any one of claims 1 to 12.

26. A communication device, characterized in that, The communication device includes: at least one processor and a communication interface, wherein the communication interface is used for the communication device to interact with other communication devices, and when program instructions are executed in the at least one processor, the communication device implements the communication method as described in any one of claims 1 to 12.

27. A communication device, characterized in that, The device includes a processor, a memory, and a transceiver, the memory for storing a computer program, and the processor for executing the computer program stored in the memory to cause the device to perform the communication method as described in any one of claims 1 to 12.

28. A communication device, characterized in that, The device includes: a processor and a memory, the processor being coupled to the memory, the memory being used to store a computer program, and the processor being used to execute the computer program stored in the memory to cause the communication device to perform the communication method as described in any one of claims 1 to 12.

29. A readable storage medium, characterized in that, Includes a program or instructions that, when run on a computer, execute the communication method as described in any one of claims 1 to 12.

30. A computer program product containing instructions, characterized in that, When the computer program product is run on a computer, it causes the computer to perform the communication method as described in any one of claims 1 to 12.

31. A chip system, characterized in that, include: A processor for retrieving and running a computer program from memory, causing a communication device equipped with the chip system to perform the communication method as described in any one of claims 1 to 12.

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