Communication method and device

Abstract

The present application provides a communication method and apparatus, the method comprising: a terminal device receives first downlink control information DCI in a first time slot, and determines a second time slot for transmitting second information based on the first DCI, the second time slot being spaced apart from the first time slot by greater than or equal to B time slots, where B is a positive integer; the terminal device performs frequency tuning and transmits the second information in the second time slot, wherein the terminal device transmits the first information within a time range after receiving the first DCI and before performing the frequency tuning, and / or transmits the third information within a time range after performing the frequency tuning and before a third time slot, where the third time slot is spaced apart from the first time slot by B time slots. Through this method, the present application can solve the problem of data transmission interruption caused by frequency tuning, effectively improve resource utilization, reduce information processing delay, and increase the flexibility of data transmission.

Description

Technical Field

[0001] The present application relates to the field of communications, and more specifically to a communication method and device. Background Art

[0002] Currently, the NR standard introduces the concept of reduced capability user equipment (REDCAP UE). This type of REDCAP UE may be less complex than other types of UE in terms of bandwidth, power consumption, and number of antennas, such as narrower bandwidth, lower power consumption, and fewer antennas. These factors, such as narrower bandwidth, can reduce the data transmission efficiency of REDCAP UEs.

[0003] To more effectively utilize frequency diversity gain and improve data transmission efficiency, REDCAP UEs must perform frequency tuning to a new frequency domain resource range for data transmission. Frequency tuning for REDCAP UEs requires a certain time unit, and within this time unit, the REDCAP UE is unable to continue transmitting data, which reduces data transmission flexibility.

[0004] In addition to REDCAP UEs, in certain scenarios, such as bandwidth part (BWP) switching, other types of UEs may also perform frequency tuning to a new frequency resource range for data transmission.

[0005] The existing New Radio (NR) protocol does not specify the time domain resources for frequency tuning. However, the location of the time domain resources for frequency tuning will affect the data transmission of the terminal device and affect the data transmission efficiency. Summary of the Invention

[0006] The present application provides a communication method and device that can solve the problem of data transmission interruption caused by frequency tuning, flexibly define the time domain position of frequency tuning, help terminal devices flexibly perform data transmission and frequency tuning, effectively improve resource utilization of data transmission, and reduce information processing delay.

[0007] In a first aspect, a communication method is provided, including: a terminal device receives first downlink control information DCI in a first time slot; the terminal device determines a second time slot for transmitting second information based on the first DCI, and the interval between the second time slot and the first time slot is greater than or equal to B time slots, where B is a positive integer; the terminal device performs frequency tuning and transmits the second information in the second time slot; the terminal device transmits the first information within a time range between the end moment of time unit T and the start moment of time unit N, where time unit N is the start time unit of frequency tuning, wherein the start moment of time unit T is not earlier than the start moment / end moment of time unit K, or the start moment of time unit T is not earlier than the end moment of time unit R; and / or the terminal device transmits third information within a time range between the end moment of time unit M and the start moment of time unit Y, wherein time unit M is the end time unit of frequency tuning, time unit Y is the start time unit of the third time slot, and the interval between the third time slot and the first time slot is equal to B time slots.

[0008] Optionally, the terminal device receives first downlink control information DCI in a first time slot; the terminal device determines a second time slot for transmitting the second information based on the first DCI, and the interval between the second time slot and the first time slot is greater than or equal to B time slots, where B is a positive integer; the terminal device performs frequency tuning and transmits the second information in the second time slot; the terminal device transmits the first information within a time range between time T and time N, where time N is the starting time when the terminal device performs frequency tuning, wherein time T is not earlier than time K, or time T is equal to time K, or time T is not earlier than the end time of R; and / or, the terminal device can transmit third information within a time range between time M and time Y, where time M is the end time when the terminal device performs frequency tuning, time Y is the starting time of the third time slot, and the time slot interval between the third time slot and the first time slot is equal to B time slots.

[0009] It should be understood that the above-mentioned time domain resources can include a start time and an end time, or a start time unit and an end time unit, or the end time of a start time unit and the start time of an end time unit, and this application does not limit this. For ease of description, the subsequent content describes the relevant technical solutions of the embodiments of this application in terms of time units, but does not deny other similar terms, such as time, time unit, start time and end time of a time unit, etc.

[0010] Optionally, when the terminal device transmits the first information within the time range between the end moment of time unit T and the start moment of time unit N, it can occupy the entire time length of any time period within the above time range, or it can occupy part of the time length of any time period within the above time range, or it can not occupy any time length within the above time range, that is, no data transmission is performed.

[0011] Optionally, when the terminal device transmits the third information within the time range between the end moment of time unit M and the start moment of time unit Y, it can occupy the entire time length of any time range within the above time range, or it can occupy part of the time length of any time range within the above time range, or it can not occupy any time length within the above time range, that is, no data transmission is performed.

[0012] Optionally, the terminal device transmits the first information or transmits the third information, which can be understood as the terminal device having the ability to transmit information and transmitting the information, or the terminal device having the ability to transmit information, but determined by certain conditions, for example, such as the communication quality within the current frequency range is not high, frequency tuning occurs, etc., the terminal device chooses not to transmit the information.

[0013] Through the above technical solution, the terminal device can transmit the first information and the third information in the time period before and after the frequency tuning is performed, which increases the flexibility of data transmission. For example, in the specific scenario of BWP switching, that is, the BWP before and after the switching only involves a change in the frequency domain position, and other BWP configuration parameters are the same. The terminal device has the ability to continue to transmit information during the BWP switching delay. During the BWP switching delay period, and before and after the time domain position of frequency tuning, the terminal device continues to transmit information, which can maximize the utilization of time domain resources and reduce the delay of information processing. On the other hand, the network device or the terminal device can select different time domain resource positions during the BWP switching delay period based on the capability differences of the terminal devices for the terminal device to perform frequency tuning. For example, the terminal device has the ability to quickly perform frequency tuning, and if the network device or the terminal device predicts that the communication quality within the frequency domain range after frequency tuning is higher, the terminal device can quickly perform frequency tuning and switch to the new frequency domain range, thereby transmitting information in the new frequency range earlier; or, within a specific time domain resource range during the BWP switching delay period, when there is a need to transmit information, the terminal device or the network device can adjust the location for performing frequency tuning outside the time domain range of the transmitted information, or the terminal device can discard the above-mentioned transmission information, thereby avoiding the terminal device performing frequency domain tuning and causing interruption of data transmission, thereby wasting data transmission resources.

[0014] For example, in another scenario, a terminal device implements frequency switching based on frequency tuning. Specifically, the terminal device receives first downlink control information (DCI) in a first time slot; the terminal device determines a second time slot for transmitting second information based on the first DCI. Frequency switching is not implemented through BWP switching. A network device or terminal device can flexibly select different time domain resource locations for the terminal device to perform frequency tuning based on the capabilities and needs of the terminal devices. For example, if the terminal device is capable of quickly performing frequency tuning within the time range between the start of the first time slot and the start of the second time slot, and the network device or terminal device predicts that communication quality within the frequency domain range after frequency tuning is higher, the terminal device can quickly perform frequency tuning and switch to the new frequency domain range, thereby transmitting information in the new frequency range earlier. Alternatively, if information is being transmitted within the time range between the start of the first time slot and the start of the second time slot, the terminal device or network device can adjust the frequency tuning location to be outside the time domain range for the transmitted information, or the terminal device can discard the transmitted information to avoid data transmission interruption caused by the terminal device performing frequency domain tuning.

[0015] In combination with the first aspect, in some implementations of the first aspect, the terminal device does not perform frequency tuning during the process of transmitting the first information and the third information.

[0016] The terminal device can transmit the first information and the third information in the time period before and after the frequency tuning is performed. It can also be ensured that during the transmission of the first information and the third information, the terminal device does not perform the frequency tuning process, thereby not causing the transmission of the first information and the third information to be interrupted, and not causing the incomplete transmission of the first information or the third information due to the overlap of the time domain resources of the information transmission and the frequency tuning.

[0017] From another perspective, if the terminal device is unable to complete the transmission of the first information within the above time range, the terminal device may choose to discard the first information. Similarly, if the terminal device is unable to complete the transmission of the third information within the above time range, the terminal device may choose to discard the third information.

[0018] It should be understood that the above-mentioned transmission includes two processes of receiving or sending information, or refers to either process of receiving or sending information.

[0019] In combination with the first aspect, in some implementations of the first aspect, the time unit K may be an end time unit for the terminal device to receive the first DCI, and the time unit R may be a time unit for the terminal device to parse the first DCI.

[0020] It should be understood that the time domain range of the time unit R is equal to the time range of the terminal device parsing the first DCI, and the length of the time unit R is equal to the time length of the terminal device parsing the first DCI.

[0021] It should be understood that the process of the terminal device receiving the first DCI can also be referred to as the process of the terminal device detecting the first DCI, or other similar words can be used to describe the process, and this application does not limit this.

[0022] It should be understood that the process of the terminal device parsing DCI can be an equivalent or similar expression of the equivalent process of the terminal device obtaining the information carried by the first DCI, or the process can also be expressed using other similar words, such as obtaining, extracting, etc. This application does not limit this.

[0023] It should be understood that the end time unit of the terminal device receiving the first DCI can be the end position of a specific time domain symbol. For example, it can be the end position of the third time domain symbol of the first time slot, or the middle position of the above-mentioned third time domain symbol, or other positions, or other time domain symbols of the first time slot, or other time units. This application does not limit this.

[0024] It should be understood that the network device can send the first DCI to the terminal device, and the terminal device correspondingly detects / or receives the first DCI. The time unit in which the network device sends the first DCI and the time unit in which the terminal device receives the first DCI can be the same time unit or different time units, and this application does not limit this.

[0025] It should be understood that the time unit in which the terminal device ends receiving the first DCI or ends parsing the first DCI can be in time domain symbols or other time units, such as seconds, milliseconds, microseconds, etc. This application does not limit this.

[0026] It should be understood that different terminal devices have different processing capabilities. When some terminal devices have stronger capabilities, they can flexibly select a suitable end time unit for parsing the first DCI, thereby pre-allocating sufficient time length for the subsequent transmission of the first information and the third information to meet their information transmission needs; when some terminal devices have weaker capabilities, they can select a longer end time unit for parsing the first DCI, and this application does not limit this.

[0027] Through the above technical solution, the present application can use the DCI reception end time and / or DCI parsing end time as the reference starting position of the time domain range for transmitting the first information, which helps to fully consider the capability differences of different terminal devices, reasonably select different time domain ranges to transmit the first information, and realize flexible scheduling of data transmission.

[0028] In combination with the first aspect, in certain implementations of the first aspect, the length of the time unit R is a predefined integer, or is configured through signaling, or is determined according to the capabilities of the terminal device.

[0029] The time length for the terminal device to parse the first DCI can be specifically configured through signaling, that is, the network device sends signaling to the terminal device, and the signaling indicates the time length for the terminal device to parse the first DCI; or, the terminal device can determine the time length for parsing the first DCI based on its own capabilities, and the terminal device informs the network device of the capability information; or, the time length for the terminal device to parse the first DCI can be predefined by the terminal device and the network device through a protocol, and this application does not limit this.

[0030] It should be understood that the network device can determine the end time unit of the first DCI by jointly determining the end time of DCI sending and the time length of parsing the first DCI, or by other methods, and this application does not impose any restrictions on this.

[0031] Through the above technical solution, the terminal device and the network device determine the time length for parsing the first DCI, and utilize the network device to determine the ability of the terminal device to parse the DCI, providing reference information for the implementation location of subsequent frequency tuning.

[0032] In combination with the first aspect, in certain implementations of the first aspect, the time unit K may also be the N1th time domain symbol within the first time slot range, and / or the time unit R is a time range within the first time slot range that lasts for N2 time domain symbols after the end time unit at which the terminal device receives the first DCI.

[0033] Optionally, the value of N1 is greater than 3, for example, N1=5, N1=6, N1=7; or, the value of N1 is not limited to being greater than 3, for example, N1=3, N1=4, N1=5, N1=6, N1=7, and this application does not limit this.

[0034] Optionally, the terminal device determines, based on its own capabilities, the starting symbol N0 at which it can send or receive the first information, and sends the capability information to the network device, wherein the value of N1 is not less than N0 determined by the terminal device based on its own capability information. Optionally, N0=2, N0=3, N0=4, N0=5, or N0=6, which is not limited in this application.

[0035] Optionally, N2=0, N2=1, N2=2, N2=3, N2=4, and this application does not impose any limitation on this.

[0036] Optionally, the terminal device determines, based on its own capability information, a symbol interval N3 at which the first information can be sent or received relative to the end symbol of the received first DCI, and sends the capability information to the network device, where the value of N2 is not less than N3 determined by the terminal device based on its own capability information. Optionally, N3=0, N3=1, N3=2, N3=3, or N3=4, and this application does not impose any limitation on this.

[0037] By using a certain time domain symbol position within the first time slot range and / or a certain time domain symbol position within the first time slot range after the terminal device ends receiving the DCI as the reference starting position of the time domain range for transmitting the first information, the network device and the terminal device do not need to determine the time domain length of the DCI parsing and the determined time domain position for ending the parsing of the DCI, thereby saving the signaling overhead related to indicating the time domain position of the DCI parsing, avoiding resource waste, and improving communication efficiency.

[0038] In combination with the first aspect, in certain implementations of the first aspect, the position of the starting time unit N for the terminal device to perform frequency tuning is predefined, or is configured through signaling, or is determined based on the capabilities of the terminal device; the position of the time unit N belongs to a first position set, and the first position set includes multiple candidate positions of the time unit N.

[0039] In combination with the first aspect, in certain implementations of the first aspect, the end time unit M at which the terminal device performs frequency tuning belongs to a second position set, and the second position set includes multiple candidate positions of the time unit M; or, the end time of the time unit M is equal to the start time of the time unit Y.

[0040] The terminal device can determine the starting time position and / or ending time position for performing frequency tuning, or the starting time unit and / or ending time unit, or the starting moment of the starting time unit and / or the ending moment of the ending time unit, etc., in the following ways: Method 1: Receive signaling from the network device, which indicates the starting time position and / or ending time position of the terminal device for performing frequency tuning. Optionally, the network device and the terminal device can predefine, or the network device directly instructs the terminal device to perform a candidate time position for frequency tuning, and A bits are used to specifically indicate one of the multiple candidate positions, where A is greater than or equal to 1 and A is an integer; or, the network device directly instructs the terminal device to perform the starting time position and / or ending time position for frequency tuning, and the terminal parses the indication signaling to determine the starting time position and / or ending time position for performing frequency tuning. Method 2: The starting time position and / or ending time position for frequency tuning is determined by the capability of the terminal device. The terminal device determines the optional starting time position and / or ending time position of frequency tuning to receive the time slot where the first DCI is located and any position in the subsequent time slots. Alternatively, the terminal device determines that the optional starting time position and / or ending time position of frequency tuning is limited to a few candidate positions. For example, when the capability of the terminal device is strong, it can flexibly select an early or delayed time domain position to perform frequency tuning; Method 3: The terminal device and the network device determine the default starting time position and ending time position of frequency tuning through a protocol. For example, the ending position of the frequency tuning can be aligned with the starting moment of the second time slot, and this application does not limit this.

[0041] The above technical solution takes into account various ways for network devices and terminal devices to determine the time domain location for frequency tuning, which helps to fully consider factors such as different scenario characteristics, terminal device capabilities, and signaling overhead, thereby improving the feasibility of the technical solution of this application and enhancing communication efficiency. At the same time, by defining multiple candidate locations for frequency tuning, it is possible to jointly consider the capability differences of terminal devices and communication needs, flexibly select different time domain locations for frequency tuning, and improve the flexibility of data transmission.

[0042] In combination with the first aspect, in certain implementations of the first aspect, the terminal device receives a first signaling indicating the length of time occupied by the frequency tuning; or, the terminal device sends a first capability information to the network device, and the first capability information is used by the network device to determine the length of time occupied by the frequency tuning.

[0043] By sending a signaling to the terminal device through the network device to indicate the length of time for the terminal device to perform frequency tuning, or by the terminal device determining the length of time for the terminal device to perform frequency tuning based on its own capabilities, the terminal device or the network device can better and flexibly schedule the length of time for the terminal device to perform frequency tuning, and can better and fully utilize the terminal device's own capability information to determine the length of time for frequency tuning.

[0044] The above technical solution is applicable to determining the starting position N of frequency tuning, and the terminal device determines the time domain position for performing frequency tuning based on the frequency tuning length, thereby guiding the network device and the terminal device to reasonably schedule or allocate the terminal device to transmit the first information and the third information.

[0045] It should be understood that the time domain position at which the terminal device performs frequency tuning can be determined based on the determined starting position N of the frequency tuning and the duration of the frequency tuning, or based on the starting position N and the ending position M of the frequency tuning.

[0046] It should be understood that, correspondingly, the duration of the frequency tuning can be determined by the three methods mentioned above, namely: pre-defined, signaling indication or capability reporting, and can also be determined by the starting position N and the ending position M of the frequency tuning.

[0047] In combination with the first aspect, in certain implementations of the first aspect, B is the number of time slots included in the switching delay, or B is the time slot offset value indicated by the time domain resource allocation field of the first DCI.

[0048] It should be understood that the number of time slots included in the switching delay refers to the number of time slots required for the terminal device to complete frequency tuning, or the switching delay value. The time slot here can also be other time units, such as subframes or symbols.

[0049] By receiving a first DCI sent from a network device in a first time slot, the terminal device can obtain information carried by the first DCI, instructing the terminal device to transmit the second information in a second time slot. The first DCI can carry the following information: the time slot offset between the second time slot in which the terminal device transmits the second information and the first time slot.

[0050] The switching delay value for the terminal device to switch the frequency point is measured in time slots, and the switching delay value can be less than or equal to the time interval between the first time slot and the second time slot.

[0051] For example, in a BWP switching scenario, B can be equal to the length of the BWP switching delay. In this scenario, the time interval between the second time slot and the first time slot should be greater than or equal to B. That is, the time domain position of the second information transmission is after the end position of the BWP switching delay.

[0052] Optionally, the first DCI may indicate a time slot offset value between the first time slot and the second time slot in a time domain resource allocation field.

[0053] For example, in a frequency switching scenario, where the frequency switching is not implemented through BWP switching, for example, a terminal device receives a first DCI in a first time slot, instructing the terminal device to receive a PDSCH in a second time slot, then B is equal to the time slot offset between the time slot in which the terminal device receives the first DCI and the time slot in which the terminal device transmits the second information.

[0054] The meaning of B is flexibly defined for different frequency switching scenarios, which can expand the scenarios in which the technical solution of the present application can be implemented, thereby increasing the feasibility of the technical solution of the present application.

[0055] According to a second aspect, a communication method is provided, including: a network device sends first downlink control information DCI in a first time slot, the first DCI indicates a second time slot in which a terminal device transmits second information, the second time slot is spaced apart from the first time slot by greater than or equal to B time slots, and B is a positive integer; the network device transmits the second information in the second time slot, wherein the network device transmits the first information within a time range between an end moment of a time unit T and a start moment of a time unit N, the time unit N being a start time unit for frequency tuning performed by the terminal device, wherein the start moment of the time unit T is not earlier than the end moment of the time unit K, or the start moment of the time unit T is not earlier than the end moment of the time unit R; and / or the network device transmits third information within a time range between an end moment of a time unit M and a start moment of a time unit Y, the time unit M being an end time unit for frequency tuning performed by the terminal device, the time unit Y being a start time unit of a third time slot, and the third time slot being spaced apart from the first time slot by B time slots.

[0056] Through the above technical solution, the present application can solve the problem of data transmission interruption caused by frequency tuning, effectively improve resource utilization, reduce information processing delay, and increase the flexibility of data transmission.

[0057] In combination with the second aspect, in certain implementations of the second aspect, the terminal device does not perform frequency tuning during the transmission of the first information and the third information, and the transmission mode includes receiving or sending information.

[0058] In combination with the second aspect, in certain implementations of the second aspect, the time unit K is the end time unit of the network device sending the first DCI, and the time unit R is the time unit of the terminal device parsing the first DCI.

[0059] It should be understood that the starting and ending positions of the time range for the network device to receive or send the first information and the third information can be determined by the way in which the terminal device sends indication information to the network device, such as the specific time unit when the terminal device ends parsing the DCI.

[0060] It should be understood that the time unit in which the network device sends the first DCI and the time unit in which the terminal device receives the first DCI may be the same time unit or may not be the same time unit, and this application does not limit this.

[0061] In combination with the second aspect, in some implementations of the second aspect, the length of the time unit R is a predefined integer, or is configured by the network device through signaling, or is determined according to the capabilities of the terminal device.

[0062] In combination with the second aspect, in certain implementations of the second aspect, the time unit K may also be the N1th time domain symbol within the first time slot range, and / or the time unit R is a time range within the first time slot range that lasts for N2 time domain symbols after the end time unit at which the terminal device receives the first DCI.

[0063] The lengths of K and R are predefined integers, or are determined according to the capabilities of the terminal device.

[0064] In combination with the second aspect, in certain implementations of the second aspect, the position of the time unit N is predefined, or is configured by the network device through signaling, or is determined according to the capabilities of the terminal device; the position of the time unit N belongs to a first position set, and the first position set includes multiple candidate positions of the time unit N.

[0065] In combination with the second aspect, in certain implementations of the second aspect, the position of time unit M belongs to a second position set, and the second position set includes multiple candidate positions of time unit M; or, the end time of time unit M is equal to the start time of the time unit Y.

[0066] In combination with the second aspect, in certain implementations of the second aspect, B is the number of time slots included in the switching delay, or B is the time slot offset value indicated by the time domain resource allocation field of the first DCI.

[0067] In combination with the second aspect, in certain implementations of the second aspect, the network device sends a first signaling, which indicates the length of time occupied by the frequency tuning performed by the terminal device; or, the network device receives first capability information, which is used by the network device to determine the length of time occupied by the frequency tuning performed by the terminal device.

[0068] According to a third aspect, a communication device is provided, which includes: a transceiver unit for receiving first downlink control information DCI in a first time slot; a processing unit for determining a second time slot for transmitting second information based on the first DCI, wherein the interval between the second time slot and the first time slot is greater than or equal to B time slots, and B is a positive integer; the processing unit is also used to perform frequency tuning; the transceiver unit is also used to transmit the second information in the second time slot, wherein the transceiver unit is also used to transmit the first information within a time range between the end moment of time unit T and the start moment of time unit N, time unit N being the start time unit of frequency tuning, wherein the start moment of time unit T is not earlier than the end moment of time unit K, or the start moment of time unit T is not earlier than the end moment of time unit R; and / or the transceiver unit is also used to transmit third information within a time range between the end moment of time unit M and the start moment of time unit Y, and time unit M is the end time unit of frequency tuning performed by the terminal device, time unit Y is the start time unit of the third time slot, and the interval between the third time slot and the first time slot is equal to B time slots.

[0069] In combination with the third aspect, in certain implementations of the third aspect, the terminal device does not perform frequency tuning during the transmission of the first information and the third information, and the transmission mode includes receiving or sending information.

[0070] In combination with the third aspect, in certain implementations of the third aspect, the time unit K is the end time unit of the terminal device receiving the first DCI, and the time unit R is the time unit of the terminal device parsing the first DCI.

[0071] In combination with the third aspect, in certain implementations of the third aspect, the length of the time unit R is a predefined integer, or is configured by the network device through signaling, or is determined according to the capabilities of the terminal device.

[0072] In combination with the third aspect, in certain implementations of the third aspect, the time unit K may also be the N1th time domain symbol within the first time slot range, and / or the time unit R may be the time range of N2 time domain symbols after the end time unit of the terminal device receiving the first DCI within the first time slot range.

[0073] The lengths of K and R are predefined integers, or are determined according to the capabilities of the terminal device.

[0074] In conjunction with the third aspect, in certain implementations of the third aspect, the position of the time unit N is predefined, configured by a network device through signaling, or determined based on the capabilities of the terminal device. The position of the time unit N belongs to a first position set that includes multiple candidate positions of N.

[0075] In combination with the third aspect, in certain implementations of the third aspect, the position of time unit M belongs to a second position set, which includes multiple candidate positions of time unit M; or, the end time of time unit M is equal to the start time of time unit Y.

[0076] In combination with the third aspect, in certain implementations of the third aspect, B is the number of time slots included in the switching delay, or B is the time slot offset value indicated by the time domain resource allocation field of the first DCI.

[0077] In combination with the third aspect, in certain implementations of the third aspect, the transceiver unit is further used to: receive a first signaling indicating the length of time taken for the frequency tuning performed by the terminal device; or, send a first capability information to the network device, wherein the first capability information is used by the network device to determine the length of time taken for the frequency tuning performed by the terminal device.

[0078] In a fourth aspect, a communication device is provided, which includes: a transceiver unit for sending first downlink control information DCI in a first time slot, where the first DCI indicates a second time slot in which a terminal device transmits second information, and the second time slot is spaced apart from the first time slot by greater than or equal to B time slots, and B is a positive integer; and also for transmitting second information in the second time slot, wherein the transceiver unit is also used to transmit the first information within a time range between the end moment of time unit T and the start moment of time unit N, where time unit N is a start time unit for frequency tuning, where the start moment of time unit T is not earlier than the end moment of time unit K, or the start moment of time unit T is not earlier than the end moment of time unit R; and / or, the transceiver unit is also used to transmit third information within a time range between the end moment of time unit M and the start moment of time unit Y, where time unit M is the end time unit for frequency tuning, where time unit Y is the start time unit of the third time slot, and the time slot interval between the third time slot and the first time slot is equal to B time slots.

[0079] In combination with the fourth aspect, in some implementations of the fourth aspect, the transmission method includes receiving or sending information.

[0080] In combination with the fourth aspect, in certain implementations of the fourth aspect, the time unit K is the end time unit of the network device sending the first DCI, and the time unit R is the time unit of the terminal device parsing the first DCI.

[0081] In combination with the fourth aspect, in certain implementations of the fourth aspect, the length of the time unit R is a predefined integer, or is configured by the network device through signaling, or is determined according to the capabilities of the terminal device.

[0082] In combination with the fourth aspect, in certain implementations of the fourth aspect, the time unit K may also be the N1th time domain symbol within the first time slot range, and / or the time unit R may be the time range of N2 time domain symbols after the end time unit of the terminal device receiving the first DCI within the first time slot range.

[0083] The lengths of K and R are predefined integers or are determined according to the capabilities of the terminal device.

[0084] In conjunction with the fourth aspect, in certain implementations of the fourth aspect, the position of time unit N is predefined, or is configured by a network device through signaling, or is determined based on the capabilities of a terminal device. The position of time unit N belongs to a first position set, which includes multiple candidate positions for time unit N.

[0085] In combination with the fourth aspect, in certain implementations of the fourth aspect, the position of time unit M belongs to a second position set, which includes multiple candidate positions of time unit M, or the end time of time unit M is equal to the start time of time unit Y.

[0086] In combination with the fourth aspect, in certain implementations of the fourth aspect, B is the number of time slots included in the switching delay, or B is the time slot offset value indicated by the time domain resource allocation field of the first DCI.

[0087] In combination with the fourth aspect, in certain implementations of the fourth aspect, the transceiver unit is further used to: send a first signaling indicating the length of time taken for the terminal device to perform frequency tuning; or, receive first capability information from the terminal device, which is used by the network device to determine the length of time taken for the terminal device to perform frequency tuning.

[0088] In a fifth aspect, a communication device is provided, comprising a device for executing the information transmission method described in the first aspect and any possible implementation of the first aspect and the second aspect and any possible implementation of the second aspect.

[0089] In a sixth aspect, a communication device is provided, comprising: 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, so that the communication device performs the communication method described in the first aspect and any possible implementation of the first aspect, or so that the communication device performs the communication method described in the second aspect and any possible implementation of the second aspect.

[0090] In the seventh aspect, a computer-readable storage medium is provided, storing instructions. When the instructions are run on a computer, the computer executes the communication method described in the first aspect and any possible implementation of the first aspect, or the computer executes the communication method described in the second aspect and any possible implementation of the second aspect.

[0091] In the eighth aspect, a chip system is provided, comprising: a processor and a communication interface, for calling and running a computer program from a memory, so that a communication device equipped with the chip system executes the communication method described in the first aspect and any possible implementation method of the first aspect, or causes a communication device equipped with the chip system to execute the communication method described in the second aspect and any possible implementation method of the second aspect.

[0092] In the ninth aspect, a computer program product is provided, which stores computer-readable instructions. When a communication device reads and executes the computer-readable instructions, the communication device executes the method in the first aspect and any possible implementation of the first aspect and the second aspect and any possible implementation of the second aspect.

[0093] In the tenth aspect, a communication system is provided, comprising: a network device and a terminal device, wherein the terminal device executes the method in the first aspect and any possible implementation of the first aspect, and the network device executes the method in the second aspect and any possible implementation of the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0094] Figure 1 It is a schematic diagram of a communication scenario in an embodiment of the present application.

[0095] Figure 2 It is a schematic diagram of information transmission and reception before and after BWP switching.

[0096] Figure 3 This is a communication method in an embodiment of the present application.

[0097] Figure 4 This is a schematic diagram of time domain resource distribution during frequency tuning in an embodiment of the present application.

[0098] Figure 5 This is a schematic diagram of information reception and transmission before and after frequency tuning according to an embodiment of the present application.

[0099] Figure 6 This is a schematic diagram of information reception and transmission before and after frequency tuning according to an embodiment of the present application.

[0100] Figure 7 This is a schematic diagram of information reception and transmission before and after frequency tuning according to an embodiment of the present application.

[0101] Figure 8 This is a schematic diagram of information reception and transmission before and after frequency tuning according to an embodiment of the present application.

[0102] Figure 9 It is a schematic block diagram of a communication device according to an embodiment of the present application.

[0103] Figure 10 It is a schematic block diagram of a communication device according to an embodiment of the present application.

[0104] Figure 11 It is a schematic block diagram of a communication device according to an embodiment of the present application. DETAILED DESCRIPTION

[0105] The technical solution in this application will be described below with reference to the accompanying drawings.

[0106] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: global system of mobile communication (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), world-wide interoperability for microwave access (WiMAX) communication system, fifth generation (5G) system or new radio (NR) and next generation communication system, etc., and are not limited by the embodiments of the present application.

[0107] The terminal device in the embodiments of the present application may refer to a user device, 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 may 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 capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network, or a terminal device in a public land mobile network (PLMN), etc., and the embodiments of the present application are not limited thereto.

[0108] The network device in the embodiment of the present application can be a device for communicating with a terminal device. The network device can be a base station (base transceiver station, BTS) in a GSM system or CDMA, or a base station (nodeB, NB) in a WCDMA system, or an evolved base station (evolutional nodeB, eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (cloud radio access network, CRAN) scenario, or the network device can be 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 PLMN network, etc., and the embodiment of the present application is not limited.

[0109] In some deployments, the gNB may include a centralized unit (CU) and a distributed unit (DU). The gNB may also include an active antenna unit (AAU). The CU implements some gNB functions, while the DU implements some gNB functions. For example, the CU is responsible for processing non-real-time protocols and services, implementing the functions of the radio resource control (RRC) and packet data convergence protocol (PDCP) layers. The DU is responsible for processing physical layer protocols and real-time services, implementing the functions of the radio link control (RLC), media access control (MAC), and physical (PHY) layers. The AAU implements some physical layer processing functions, RF processing, and active antenna-related functions. Because RRC layer information ultimately becomes PHY layer information, or is converted from PHY layer information, in this architecture, higher-layer signaling, such as RRC layer signaling, can also be considered to be sent by the DU, or by the DU+AAU. It is understood that the network device may include one or more of a CU node, a DU node, and an AAU node. In addition, the CU may be classified as a network device in an access network (RAN) or a network device in a core network (CN), which is not limited in this application.

[0110] Figure 1 It is a schematic diagram of a communication system of the present application. Figure 1 The communication system in the embodiment may include at least one terminal (e.g., terminal 104, terminal 106) and a network device 102. The network device 102 is used to provide communication services for the terminal device and access the core network. The terminal device can access the network by searching for synchronization signals, broadcast signals, etc. sent by the network device 102, thereby communicating with the network. Figure 1 The terminals 104 and 106 in the network device 102 can perform uplink and downlink transmission with the network device 102. For example, the network device 102 can send downlink signals to the terminals 104 and 106, and can also receive uplink signals sent by the terminals 104 and 106.

[0111] It should be noted that the embodiments of the present application can be applied to a communication system including one or more network devices, and can also be applied to a communication system including one or more terminals, and the present application does not limit this.

[0112] It should be understood that the communication system may include one or more network devices. One network device may send data or control signaling to one or more terminal devices. Multiple network devices may also send data or control signaling to one or more terminal devices simultaneously.

[0113] In order to better understand the embodiments of the present application, Figure 2 An exemplary description is given of the relevant concepts of the embodiments of the present application.

[0114] A common scenario where terminal equipment performs frequency tuning is BWP switching. Figure 2 A schematic diagram showing information transmission and reception before and after BWP switching is shown.

[0115] 201. A network device sends downlink control information DCI to a terminal device on a first time domain resource and a first BWP. The DCI instructs the terminal device to switch to a second BWP and to receive a physical downlink shared channel or send a physical uplink shared channel on the second time domain resource.

[0116] Accordingly, the terminal device receives the DCI on the first time domain resource and the first BWP.

[0117] The first time domain resource may be a resource in units of a time slot, a subframe, a radio frame, a mini-slot, or an orthogonal frequency division multiplexing (OFDM) symbol.

[0118] When the network device needs to send downlink data on a new BWP, the network device may send indication information indicating the new BWP to the terminal device to instruct the terminal device to perform BWP switching. The network device may indicate the time domain resource where the first data channel is located to the terminal device via DCI, so that the terminal device completes the BWP switching before receiving or sending the first data channel.

[0119] The DCI instructs the terminal device to switch to the second BWP, which means that the network device can instruct the terminal device to use the second BWP to send and receive information. The DCI may include 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 DCI instructs the terminal device to receive the physical downlink shared channel PDSCH on the second time domain resource, the time slot offset of the PDSCH relative to the DCI can be recorded as K0. When the DCI instructs the terminal device to send the physical uplink shared channel PUSCH on the second time domain resource, the time slot offset of the physical uplink shared channel PUSCH relative to the DCI can be recorded as K2. Figure 2 The following is an example of the time slot offset K0 of PDSCH. Figure 2As shown, the terminal device calculates K0 time slots backward based on the starting position of time slot n where the first time domain resource is located to obtain the starting position of time slot n+K0 where the second time domain resource is located.

[0120] 202. Perform switching from the first BWP to the second BWP.

[0121] The terminal device may perform switching from the first BWP to the second BWP after receiving the DCI, or may perform switching from the first BWP to the second BWP within a period of time after receiving the DCI.

[0122] Switching from the first BWP to the second BWP means that the terminal device no longer uses the first BWP to send and receive information, but uses the second BWP to send and receive information. Before the terminal device can send and receive information on the second BWP, the terminal device needs to perform a series of preparatory tasks such as changing BWP configuration parameters. Therefore, during the BWP switching process, the terminal device will not receive or send information. Figure 2 As shown, after the first time domain resource ends and before the second time domain resource begins, the terminal device will not receive or send information. Since the terminal device needs to receive or send the first data channel on the second time domain resource and the second BWP, the terminal device needs to complete the switch from the first BWP to the second BWP before the second time domain resource begins.

[0123] Due to differences in device processing capabilities and BWP configuration parameters, the actual delay required for a terminal device to perform BWP switching varies. In order to coordinate the transmission of information between the network device and the terminal device, the network device and the terminal device can agree on a BWP switching delay. For example, when the SCS index value is 0, the agreed BWP switching delay under the first type of terminal device capabilities is 3 time slots, and the agreed BWP switching delay under the second type of terminal device capabilities is 1 time slot; when the SCS index value is 1, the agreed BWP switching delay under the first type of terminal device capabilities is 5 time slots, and the agreed BWP switching delay under the second type of terminal device capabilities is 2 time slots; when the SCS index value is 2, the agreed BWP switching delay under the first type of terminal device capabilities is 9 time slots, and the agreed BWP switching delay under the second type of terminal device capabilities is 3 time slots; when the SCS index value is 3, the agreed BWP switching delay under the first type of terminal device capabilities is 17 time slots, and the agreed BWP switching delay under the second type of terminal device capabilities is 6 time slots. The network device can schedule the first data channel according to the agreed BWP switching delay, so that the terminal device can receive or send the first data channel on the second BWP.

[0124] For ease of description, "actual BWP switching delay" can refer to the actual delay consumed by the terminal device when performing a BWP switching; "agreed BWP switching delay" can refer to the BWP switching delay agreed upon between the network device and the terminal device. Typically, the agreed BWP switching delay is longer than the actual BWP switching delay. "Agreed BWP switching delay" can also be referred to as the interruption time. In this application, "agreed BWP switching delay" can refer to the BWP switching delay specified in the communication protocol. Figure 2 The interval between PDCCH and PDSCH in the BWP can be expressed by the agreed BWP switching delay.

[0125] The starting position of the agreed BWP switching delay may be the starting position of the timeslot containing the PDCCH that transmits the DCI. The starting position of the agreed BWP switching delay may also be the ending position of the third symbol of the timeslot containing the PDCCH that transmits the DCI. The starting position of the agreed BWP switching delay may also be the ending position of the last symbol of the PDCCH that transmits the DCI. The starting position of the agreed BWP switching delay may also be the ending position of the timeslot containing the PDCCH that transmits the DCI.

[0126] 203. Receive or send the first data channel on the second time domain resource and on the second BWP.

[0127] After completing the handover from the first BWP to the second BWP, the terminal device receives or sends the first data channel on the second BWP. Receiving or sending the first data channel can be understood as receiving or sending a message or signaling on the first data channel.

[0128] As described above, to ensure that the terminal device can correctly send and receive messages, the network device and the terminal device can agree on a longer BWP switching delay, which is longer than the BWP switching delay actually required by the terminal device. However, when the difference between the first BWP and the second BWP before and after the switch is only in their frequency domain positions, and all other parameters remain the same, the terminal device does not need to load other BWP configuration parameters; the terminal device only needs to perform frequency shifting between the BWPs. Therefore, the actual BWP switching delay required is much shorter than the agreed BWP switching delay. However, existing BWP switching mechanisms tend to reduce resource utilization, increase information processing delays, and reduce the flexibility of information transmission. Therefore, the present application provides a new communication method that is applicable to scenarios where a terminal device performs frequency tuning to perform frequency switching, including scenarios where the terminal device performs BWP switching and the difference between the two BWPs before and after the switch is only in their frequency domain positions. Furthermore, the technical solutions provided in the embodiments of the present application are also applicable to other scenarios, which are not limited by the present application.

[0129] Figure 3 A schematic diagram of a communication method according to an embodiment of the present application is shown, wherein the execution subjects of the method are network equipment and terminal equipment.

[0130] S310, the network device sends first downlink control information DCI in a first time slot, and the first DCI instructs the terminal device to receive or send second information in a second time slot.

[0131] Accordingly, the terminal device receives the first DCI in the first time slot, and determines the second time slot for receiving or sending the second information based on the first DCI, wherein the interval between the second time slot and the first time slot is greater than or equal to B time slots, and B is a positive integer.

[0132] Optionally, the terminal device receives the first DCI, and by parsing the first DCI, obtains the time slot offset between the second time slot in which the terminal device receives or sends the second information and the first time slot, and determines the position of the second time slot accordingly.

[0133] Optionally, the terminal device detects the first DCI and obtains the time slot offset between the second time slot in which the terminal device receives or sends the second information and the first time slot, and then determines the second time slot in which the terminal device receives or sends the second information.

[0134] It should be understood that the process or step of the terminal device parsing the first DCI can be understood as the process of the terminal device obtaining the information carried by the first DCI. In other words, the process of obtaining the information carried by the first DCI may not be parsing, but other steps with similar processes, such as detection. This application does not limit this.

[0135] The process of the terminal device parsing the first DCI can be implemented by the terminal device, and can be completed within the symbol position range agreed upon by the network device and the terminal device in the first time slot where the first DCI is received, that is, it can be the Zth time domain symbol in the first time slot, where Z is greater than or equal to 0, and 0 is the encoding of the first time domain symbol of the first time slot, or the index value of the time domain symbol. For example, the value of Z can be 3 or other values, which is not limited in this application.

[0136] For ease of description, the embodiments of the present application use analysis to describe the technical solution of the present application, but it should not be understood that the process of terminal equipment parsing DCI is necessary or essential. This description is an exemplary description and has no limiting effect.

[0137] It should be understood that the time slot offset between the first time slot and the second time slot can maintain a relationship greater than or equal to the switching delay value required for the terminal device to complete the frequency switching. For example, the terminal device and the network device can agree that the switching delay value is B time slots, then the time slot offset between the first time slot and the second time slot is greater than or equal to B time slots, and B time slots are the number of time slots occupied by the frequency switching, that is, the switching delay value.

[0138] To facilitate understanding of the embodiments of the present application, the embodiments of the present application are described illustratively using an example in which the time slot offset between the first time slot and the second time slot is equal to B time slots.

[0139] The terminal device receives the first DCI from the network device and obtains the information carried by the first DCI, and can determine the second time slot for transmitting the second information. Specifically, the terminal device can determine the specific time domain resource for transmitting the second information in the second time slot, or a time unit, or a moment position, or a time domain symbol, or other similar terms with the same expression meaning, which is not limited in this application.

[0140] Specifically, the terminal device receives the first DCI within a period of time domain resources in the first time slot. The period of time domain resources can be described by concepts such as time units or moments, or can be expressed using other similar words with the same meaning. This application does not limit this.

[0141] It should be understood that this period of time domain resources may include a starting time position and an ending time position, or a starting moment and an ending moment, or a starting time unit and an ending time unit, or an ending moment of a starting time unit and a starting moment of an ending time unit, and the time unit may be measured in time domain symbols or in absolute time, such as milliseconds, microseconds, seconds, etc. This application does not limit this.

[0142] For ease of description, the embodiments of the present application use time units to describe the relevant technical solutions of the embodiments of the present application, but do not deny other similar words, such as moments, start and end times of time units, etc.

[0143] S320: The terminal device performs frequency tuning and receives or sends second information in the second time slot.

[0144] The terminal device performs frequency tuning within the switching delay, and the frequency tuning is used to implement frequency switching and enable the terminal device to receive or send the second information at the new frequency.

[0145] The time domain position used by the terminal device to complete frequency tuning within the switching delay can be predefined, or the time domain position of the frequency tuning can be indicated by sending signaling from the network device to the terminal device, or the terminal device can determine the appropriate time domain position for performing frequency tuning based on its own capabilities and send capability information to the network device for the network device to determine the time domain position of the terminal device to perform frequency tuning.

[0146] Optionally, the network device may first receive capability information reported by the terminal device, and send signaling to the terminal device to indicate the time domain position of frequency tuning.

[0147] Optionally, in the technical solution of the embodiment of the present application, words such as time units can be used to describe the time domain position of the terminal device performing frequency tuning, or to describe the time length for the terminal device to perform frequency tuning, and the time unit can be in dimensions such as seconds, milliseconds, microseconds, etc., or it can be described in dimensions such as time domain symbols, or it can be described using other similar words with time length meanings, such as moment, etc. This application does not limit this.

[0148] The terminal device can not only complete frequency tuning within the switching delay, but can also continue to send and receive data for a period of time before and after performing frequency tuning.

[0149] S320a, the terminal device is able to receive or send the first information within a time range from after receiving the first DCI to before starting to perform frequency tuning.

[0150] Exemplarily, the terminal device can continue to receive or send the first information within a period of time from after receiving the N1th symbol of the time slot where the first DCI is located to before starting to perform frequency tuning.

[0151] Optionally, the value of N1 is greater than 3, for example, N1=5, N1=6, N1=7; or, the value of N1 is not limited to being greater than 3, for example, N1=3, N1=4, N1=5, N1=6, N1=7, and this application does not limit this.

[0152] Optionally, the terminal device determines the starting symbol N0 for sending the first information based on its own capability information, and sends the capability information to the network device, and the value of N1 is not less than N0 determined by the terminal device based on its own capability information.

[0153] Optionally, N0=2, N0=3, N0=4, N0=5, N0=6, which is not limited in this application.

[0154] Exemplarily, the terminal device can continue to receive or send the first information during the time slot in which the first DCI is received, within a period of time from N2 symbols after the end time unit of receiving the first DCI to the start of frequency tuning.

[0155] Exemplarily, the terminal device can continue to receive or send the first information during the time slot in which the first DCI is received, within a period of time starting from the N2th symbol after the end time unit of receiving the first DCI to before starting to perform frequency tuning.

[0156] Optionally, N2=0, N2=1, N2=2, N2=3, N2=4, and this application does not impose any limitation on this.

[0157] Optionally, the terminal device determines the symbol interval N3 of the end symbol of the first DCI to be sent or received based on its own capability information, and sends the capability information to the network device, and the value of N2 is not less than N3 determined by the terminal device based on its own capability information.

[0158] Optionally, N3=0, N3=1, N3=2, N3=3, N3=4, which is not limited in this application.

[0159] Exemplarily, the terminal device can continue to receive or send the first information within a period of time from the N2th symbol after receiving the N1th symbol of the time slot where the first DCI is located to the start of frequency tuning.

[0160] Exemplarily, the terminal device can continue to receive or send the first information within a period of time starting from the N2th symbol after receiving the N1th symbol of the time slot where the first DCI is located to before starting to perform frequency tuning.

[0161] Optionally, N1=3, N1=4, N1=5, N1=6, N1=7, which is not limited in this application.

[0162] Optionally, N2=0, N2=1, N2=2, N2=3, N2=4, which is not limited in this application.

[0163] Optionally, the terminal device determines the symbol interval N3 after the N1th symbol of the time slot where the first DCI is received based on its own capability information for sending the specific starting symbol of the first information, and sends the capability information to the network device, and the value of N2 is not less than N3 determined by the terminal device based on its own capability information.

[0164] For ease of understanding later, the initial time unit at which the terminal device receives or sends the first information is defined as the initial moment of the time unit P. The possible positions of the time unit P include the positions described above, including detecting the first DCI, receiving N1 symbols of the time slot where the first DCI is located, receiving after N1 symbols of the time slot where the first DCI is located, receiving the start of the N1th symbol of the time slot where the first DCI is located, receiving after N2 symbols after the end time unit of the first DCI, receiving the start of the N2th symbol after the end time unit of the first DCI, receiving after N2 symbols after the N1th symbol of the time slot where the first DCI is located, receiving the start of the N2th symbol after the N1th symbol of the time slot where the first DCI is located, etc., and this application does not limit this.

[0165] S320b: The terminal device can receive or send the third information within a time range from after frequency tuning is completed to before the end time of the start time unit of the second time slot.

[0166] Exemplarily, if the terminal device performs frequency tuning during the time domain resources for receiving or sending first information, and the first information is triggered by DCI, and the frequency tuning is not triggered by the DCI associated with the first information, the terminal device discards the first information; and / or, if the terminal device performs frequency tuning during the time domain resources for receiving or sending third information, the third information is triggered by DCI, and the frequency tuning is not triggered by the DCI associated with the third information, the terminal device discards the third information.

[0167] It should be understood that the ability of a terminal device to receive or send information can be understood as the ability of the terminal device to receive indication signaling sent by a network device; it can also be understood as the ability of the terminal device to receive or send information based on indication signaling; it can also be understood as the ability of the terminal device to send indication signaling or data information. The indication signaling can be uplink control signaling, downlink control signaling, or RRC signaling, or other signaling, which is not limited in this application.

[0168] It should be understood that the end time unit of the frequency tuning performed by the terminal device may coincide with the start time unit of the second time slot. Under this condition, the terminal device does not receive or send the third information.

[0169] It should be understood that in the above exemplary description, the terminal device can receive or send the first information within the time range after the time unit P and before the start of frequency tuning, or the terminal device can receive or send the third information within the time range after the frequency tuning is completed and before the start time unit of the second time slot, or the terminal device can receive or send the first information and the third information within the above two time ranges.

[0170] It should be understood that in the above exemplary description, when the terminal device receives or sends the first information, and receives or sends the third information, it can occupy the entire time length of any of the two time ranges mentioned above, and can also partially occupy part of the time length of any of the two time ranges. The terminal device can also not receive or send the first information and the third information.

[0171] The time length for the terminal device to parse the first DCI can be determined in a predefined manner, that is, the terminal device can determine the time length for parsing the DCI through a protocol with the network device.

[0172] Optionally, the time length for the terminal device to parse the first DCI can be determined by sending signaling by the network device to the terminal device.

[0173] Optionally, the time length for the terminal device to parse the first DCI may be determined by the terminal device determining the time length for performing DCI parsing according to its own capability information and sending the capability information to the network device.

[0174] Optionally, the time length for the terminal device to parse the first DCI can be determined by directly determining the time length for DCI parsing by the terminal device and sending capability information to the network device, without the network device needing to send indication information to the terminal device. The starting moment of the frequency tuning of the terminal device, or the starting time unit, or the starting time domain symbol, and the ending moment, or the ending time unit, or the ending time domain symbol, can be predefined, which means that the terminal device can determine the starting moment of the frequency tuning with the network device through a protocol; it can also be a method in which the network device sends signaling to the terminal device, and the signaling indicates the starting moment of the frequency tuning of the terminal device; it can also be a method in which the terminal device determines the starting moment of frequency tuning based on its own capability information and sends capability information to the network device. The specific method for determining the ending moment of the frequency tuning of the terminal device can refer to the aforementioned introduction to the starting moment of the frequency tuning of the terminal device, which will not be repeated here.

[0175] It should be understood that the above-mentioned expressions such as the starting time, starting time unit, starting time domain symbol, and ending time of the starting time unit are equivalent expressions, and this application does not limit them.

[0176] In the above steps, the positions of the start time unit and the end time unit used by the terminal device to perform frequency tuning can include multiple candidate positions respectively. For example, the position of the time unit N can be equal to the set {0, L1, L2, L3, ..., L M}, where 0, L1, L2, L3, ..., L MIt is associated with multiple candidate positions of the starting time unit or the ending time unit for the terminal device to perform frequency tuning, and the network device can send signaling to the terminal device, or the terminal device can determine the appropriate position based on its own capability information. This application does not limit this.

[0177] It should be understood that the above-mentioned set is a location set consisting of multiple candidate locations of time unit N, and the candidate location can be determined in a predefined manner, or can be specifically configured through signaling, or can be specifically determined based on the capability information of the terminal device. This application does not limit this.

[0178] The method for determining the length of time for the terminal device to complete frequency tuning can also refer to the above introduction to the starting time of frequency tuning of the terminal device, which will not be repeated here.

[0179] It should be understood that the first information, the second information and the third information in the above technical solution can be one or more of an uplink shared channel, a random access channel, an uplink demodulation reference signal, a sounding reference signal, downlink control information, a downlink shared channel, and a downlink demodulation reference signal, and the first information, the second information and the third information can be the same type of information or different types of information, and this application does not limit this.

[0180] It should be understood that when the terminal device is performing actions such as receiving or sending the first information, the second information, and the third information, the network device will also receive or send the corresponding information at the corresponding time domain position.

[0181] Exemplarily, the network device receives or sends the second information in the second time slot, and the network device receives or sends the first information within the time range between the end moment of sending the first DCI or the end moment of the terminal device finishing parsing the first DCI and the initial time unit of the terminal device performing frequency tuning.

[0182] Exemplarily, the network device receives or sends the third information within a time range between an end time unit of the terminal device ending frequency tuning and a start time unit of the second time slot.

[0183] It should be understood that the network device can determine the end time, or the end time unit, or the end domain symbol for the terminal device to parse the first DCI based on the end time of sending the first DCI or the end time of receiving the first DCI, and the time length of the DCI.

[0184] The end time unit for the network device to send the first DCI and the end time unit for the terminal device to receive the first DCI can be the same time unit or different time units, for example, the time is advanced. This application does not limit this.

[0185] Through the above technical solution, the terminal device can transmit the first information and the third information in the time period before and after the frequency tuning is performed, which increases the flexibility of data transmission, improves resource utilization, and reduces the information transmission delay. For example, in the specific scenario of BWP switching, that is, the BWP before and after the switching only involves a change in the frequency domain position, and other BWP configuration parameters are the same. The terminal device has the ability to continue to transmit information during the BWP switching delay. During the BWP switching delay period, and before and after the time domain position of frequency tuning, the terminal device continues to transmit information, which can maximize the utilization of time domain resources and reduce the delay of information processing. On the other hand, based on the capability differences of the terminal devices, different time domain resource locations can be selected to perform frequency tuning during the BWP switching delay. For example, the terminal device has the ability to quickly perform frequency tuning, and if the network device or the terminal device predicts that the communication quality within the frequency domain range after frequency tuning is higher, the terminal device can quickly perform frequency tuning and switch to the new frequency domain range, thereby transmitting information in the new frequency range earlier; or, when there is a need to receive or send information within a specific time domain resource range during the BWP switching delay, the terminal device or the network device can adjust the location for performing frequency tuning to be outside the time domain range of the transmitted information, or the terminal device can discard the above-mentioned transmission information, thereby avoiding the interruption of data transmission caused by the terminal device performing frequency domain tuning and wasting data transmission resources.

[0186] For example, in another scenario, a terminal device implements frequency switching based on frequency tuning. Specifically, the terminal device receives first downlink control information (DCI) in a first time slot; the terminal device determines a second time slot for transmitting second information based on the first DCI, and the frequency switching is not implemented through BWP switching. Frequency tuning can be flexibly selected at different time domain resource locations based on the capabilities and needs of the terminal devices. For example, if the terminal device is capable of quickly performing frequency tuning within the time range between the start of the first time slot and the start of the second time slot, and the network device or the terminal device predicts that communication quality within the frequency domain range after frequency tuning is higher, the terminal device can quickly perform frequency tuning and switch to the new frequency domain range, thereby transmitting information in the new frequency range earlier. Alternatively, if information is being transmitted within the time range between the start of the first time slot and the start of the second time slot, the terminal device or the network device can adjust the frequency tuning location to be outside the time domain range for the transmitted information, or the terminal device can discard the transmitted information to avoid data transmission interruption caused by the terminal device performing frequency domain tuning.

[0187] The following will be combined Figure 4 A communication method according to an embodiment of the present application is described in detail.

[0188] 401. The terminal device receives the first DCI from the network device in time slot L, and ends the reception of the first DCI at the end of time unit K.

[0189] Optionally, the terminal device receives the first DCI from the network device in time slot L and ends receiving the first DCI at time unit K.

[0190] Optionally, the terminal device receives the first DCI from the network device in time slot L and ends receiving the first DCI at time K.

[0191] 402. The terminal device completes receiving the first DCI at the end of the time unit K of the first time slot, and completes parsing the first DCI at the end of the time unit R.

[0192] Optionally, the terminal device completes the reception of the first DCI at any time within the time range between the start time of the time slot where the first DCI is located and the end time of time unit K, and the terminal device completes the parsing of the first DCI at any time within the time range between the start time of the time slot where the first DCI is located and the end time of time unit R.

[0193] It should be understood that the length of the time unit R can be in time domain symbols, or in seconds, milliseconds, or microseconds, and this application does not limit this. For ease of description, the embodiment of this application uses time domain symbols as units to clearly and completely describe the technical solutions of the embodiment of this application.

[0194] It should be understood that the length of the time unit R is a predefined integer, or is configured through signaling, or is determined according to the capabilities of the terminal device.

[0195] 402a, the time unit K can also be the N1th time domain symbol in the first time slot range, and / or the time unit R is the time range of N2 time domain symbols after the end time unit of the terminal device receiving the first DCI in the first time slot range.

[0196] Exemplarily, N1 and N2 are predefined integers greater than or equal to 0; or, N1 is a predefined integer greater than 3; or, the terminal device determines the specific values ​​of the time units N0 and N3 associated with sending the first information based on its own capability information, and sends the capability information to the network device, and the value of N1 is not less than N0 determined by the terminal device based on its own capability information, and the value of N2 is not less than N3 determined by the terminal device based on its own capability information.

[0197] 403. The terminal device receives or sends the first information between time unit T and time unit N, where time unit N is the starting time unit for the terminal device to perform frequency tuning, or the starting moment, or the ending moment of the starting time unit, and the starting moment of time unit T is not earlier than the ending moment of time unit K, or the starting moment of time unit T is not earlier than the ending moment of time unit R.

[0198] Optionally, the terminal device continues to receive or send the first information within a period of time from the N1th symbol / after the N1th symbol / starting from the N1th symbol of the time slot where the first DCI is located to the start of frequency tuning.

[0199] Optionally, the terminal device can continue to receive or send the first information within a period of time from / starting after N2 symbols after the end time unit of receiving the first DCI to starting to perform frequency tuning.

[0200] Optionally, the terminal device can also receive or send third information between time unit M and time unit Y, where time unit N is the starting time unit for the terminal device to perform frequency tuning, or the starting moment, or the ending moment of the starting time unit, time M is the ending time unit for the terminal device to perform frequency tuning, or the ending moment, or the starting moment of the ending time unit, and time unit Y is the starting time unit of the second time slot, or the starting moment, or the ending moment of the starting time unit.

[0201] Optionally, if the terminal device performs frequency tuning during the time domain resource of receiving or sending the first information, the first information is triggered by DCI, and the frequency tuning is not triggered by the DCI associated with the first information, the terminal device discards the first information.

[0202] Optionally, if the terminal device performs frequency tuning during the time domain resources for receiving or sending third information, the third information is triggered by DCI, and the frequency tuning is not triggered by the DCI associated with the third information, the terminal device discards the third information.

[0203] It should be understood that in the embodiment of the present application, the switching delay value is measured in terms of the number of time slots.

[0204] It should be understood that the starting time unit and ending time unit and time length, or the starting moment and ending moment and time length, used by the terminal device to perform frequency tuning can be determined in a predefined manner, can be determined by sending signaling from the network device to the terminal device, or can be determined by the terminal device based on its own capability information and sending the capability information to the network device.

[0205] Optionally, the network device may first receive the capability information reported by the terminal device and determine to send signaling to the terminal device to indicate the time domain position and time length of the frequency tuning; or, the network device receives the capability information reported by the terminal device and no longer sends signaling to the terminal device. This application does not limit the method to be adopted.

[0206] 404. The terminal device performs frequency tuning and receives or sends second information in a second time slot.

[0207] It should be understood that when the terminal device is receiving or sending the first information, the second information and the third information, the network device will also receive or send the corresponding information at the corresponding time domain position. For details, please refer to the above description of Figure 3 The relevant description will not be repeated here.

[0208] It should be understood that in the above steps, the position of the starting time unit N and the position of the ending time unit M for the terminal device to perform frequency tuning can respectively include multiple candidate positions. For example, the time unit N can be equal to the set {0, L1, L2, L3, ..., L M}, where 0, L1, L2, L3, ..., L M It is associated with multiple candidate positions of the starting time unit N or the ending time unit M for the terminal device to perform frequency tuning, and can be determined by the network device sending signaling to the terminal device, or can be determined by the terminal device determining a suitable position based on its own capability information. This application does not limit this.

[0209] It should be understood that the start time unit N and the end time unit M for performing frequency tuning can be associated with the symbol index of the time slot where the frequency tuning is located; or, the start time unit N and the end time unit M for performing frequency tuning can determine multiple candidate positions of the start time unit N and the end time unit M in a predefined manner, and the positions of N and M are associated with the candidate position index; or, the start time unit N and the end time unit M for performing frequency tuning are associated with the symbol interval of the start time unit / end time unit position of the frequency tuning relative to the start position of the time slot where the first DCI is received and / or the start position of the second time slot. This application does not limit this.

[0210] Through the above technical solution, the present application can solve the problem of data transmission interruption caused by frequency tuning, improve resource utilization, reduce information transmission delay, and improve the flexibility of data transmission of terminal equipment.

[0211] The following will be combined Figures 5 to 6To introduce in detail a technical solution of an embodiment of the present application. For the convenience of briefly describing the embodiment of the present application, the embodiment of the present application takes the example that the first information, the second information and the third information are all physical downlink shared channels (PDSCH), the time slot offset K0 between the first time slot where the first DCI is received and the second time slot where the PDSCH is received is 2 time slots, the switching delay value of the frequency switching is 2 time slots, and the initial time unit N for performing frequency tuning is associated with the symbol interval between the starting position of the second time slot where the second information is received or sent as an example to make a clear and complete description of the technical solution of the embodiment of the present application. For the description of the first information, the second information and the third information, please refer to Figure 3 and Figure 4 See the relevant instructions in .

[0212] Figure 5 A schematic diagram of information transmission and reception before and after frequency tuning is shown in an embodiment of the present application, specifically as follows Figure 5 shown.

[0213] 501. The terminal device receives the first DCI in time slot L, and the first DCI instructs the terminal device to receive or send second information in time slot L+2.

[0214] 502. The terminal device performs frequency tuning and receives or sends second information in the second time slot.

[0215] It should be understood that the terminal device receives or sends the first information during the period between the parsing of the first DCI and the starting time unit of the start of frequency tuning, or the terminal device receives or sends the first information during a period of time after receiving the designated symbol position / designated symbol position of the time slot where the first DCI is located and the starting moment of the start of frequency tuning; the terminal device can receive or send the third information during the period between the end moment of the frequency tuning and the starting moment of the second time slot. For details, please refer to the above description and will not be repeated here.

[0216] The initial time unit N in which the terminal device performs frequency tuning is associated with H symbol intervals between the time domain start position of the frequency tuning and the start position of the second time slot.

[0217] Optionally, the value of H is predefined.

[0218] Optionally, the value of H is configured by the network device through signaling.

[0219] Optionally, the value of H is reported by the terminal device to the network device based on its own capabilities, for example, the value of N is zero, for example, the value of H is a positive integer.

[0220] The value of H is equal to the set {0, L1, L2, L3, ..., L M}. Where M, L1, L2, L3, ..., L M is a positive integer. The K values ​​of H are equal to the set {0, L1, L2, L3, ..., L M}, where the value of K is less than or equal to the value of M.

[0221] The value of H is equal to the value of an element in the set {0}, or,

[0222] The value of H is equal to the value of an element in the set {L1}, or,

[0223] The value of H is equal to the value of an element in the set {L2}, or,

[0224] The value of H is equal to the value of an element in the set {0, L1}, or,

[0225] The value of H is equal to the value of an element in the set {0, L2}, or,

[0226] The value of H is equal to the value of an element in the set {L1, L2}, or,

[0227] The value of H is equal to the value of an element in the set {0, L1, L2}.

[0228] For example, Figure 5 The technical solution of the embodiment of the present application is introduced by taking the time domain start time unit of frequency tuning as an example, in which the value of H is equal to the value of an element in the set {L1, L2, L3} and the BWP switching delay is 2 time slots. The BWP switching only involves the shifting of the frequency point, so its switching scenario is suitable for the communication method described in the embodiment of the present application.

[0229] The terminal device receives the first DCI on the first BWP of the first frequency point at time slot L, which is used to instruct the terminal device to receive PDSCH on the second BWP of the second frequency point at time slot L+2, and can instruct the terminal device to perform frequency tuning. The numerical value H has three values, and the three values ​​of H are equal to the values ​​of the three elements in the set {L1, L2, L3}. Among them, L1 is the symbol interval of the first candidate position of frequency tuning relative to the starting boundary of time slot L+2, L2 is the symbol interval of the second candidate position of frequency tuning relative to the starting boundary of time slot L+2, and L3 is the symbol interval of the first candidate position of frequency tuning relative to the starting boundary of time slot L+2. Figure 5 In the described scenario, L3 is equal to the number of time domain continuous symbols for frequency tuning, that is, the number of time domain symbols for frequency tuning of the terminal device.

[0230] Optionally, the network device indicates the time domain position of frequency tuning through 1 bit, indicating one of the time domain position set {L1, L2}; or, indicating one of the time domain position set {L1, L3}; or, indicating one of the time domain position set {L2, L3}; or, indicating the time domain position {L1}, or, indicating the time domain position {L2}; or, indicating the time domain position {L3}.

[0231] Optionally, the network device indicates the time domain position of frequency tuning through 2 bits, indicating one of the time domain position set {L1, L2, L3, L4}; or, indicating one of the time domain position set {L1, L2, L3}; or, indicating one of the time domain position set {L1, L2, L4}; or, indicating one of the time domain position set {L1, L2, L3}; or, indicating one of the time domain position set {L1, L3, L4}; or, indicating one of the time domain position set {L2, L3, L4}.

[0232] Optionally, the time domain position at which the terminal device performs frequency tuning is determined based on the capabilities of the terminal device. For example, the terminal device may indicate the time domain position to the network device via one bit, indicating one of the time domain position sets {L1, L2}; or, indicating one of the time domain position sets {L1, L3}; or, indicating one of the time domain position sets {L2, L3}; or, indicating the time domain position {L1}; or, indicating the time domain position {L2}; or, indicating the time domain position {L3}.

[0233] Optionally, the terminal device indicates the time domain position of frequency tuning through 2 bits, indicating one of the time domain position set {L1, L2, L3, L4}; or, indicating one of the time domain position set {L1, L2, L3}; or, indicating one of the time domain position set {L1, L2, L4}; or, indicating one of the time domain position set {L1, L2, L3}; or, indicating one of the time domain position set {L1, L3, L4}; or, indicating one of the time domain position set {L2, L3, L4}.

[0234] Optionally, the time domain position at which the terminal device performs frequency tuning is predefined, for example, the predefined position is one of the time domain position set {L1, L2}; or, the predefined position is one of the time domain position set {L1, L3}; or, the predefined position is one of the time domain position set {L2, L3}; or, the predefined position is {L1}; or, the predefined time domain position is {L2}; or, the predefined time domain position is {L3}, for example, the predefined position is one of the time domain position set {L1, L2, L3, L4}; or, indicates one of the time domain position set {L1, L2, L3}; or, indicates one of the time domain position set {L1, L2, L4}; or, indicates one of the time domain position set {L1, L3, L4}; or, indicates one of the time domain position set {L2, L3, L4}.

[0235] Through the above technical solution, the technical solution of the embodiment of the present application is applicable to solving the scenario where the only difference between the two BWPs before and after the BWP switching is the different frequency position, and other relevant BWP parameters are the same, and the frequency switching is achieved through frequency tuning. The above technical solution can dynamically or statically determine the time domain position and time length of the terminal device for frequency tuning, realize flexible BWP switching, reduce the delay of data transmission, and increase the flexibility of the terminal device for data transmission.

[0236] Figure 6 FIG. 1 shows a schematic diagram of information transmission and reception before and after frequency tuning according to an embodiment of the present application. Figure 6 shown.

[0237] The time domain position at which the terminal device performs frequency tuning may be indicated by the network device through signaling, or may be determined by the capability information of the terminal device, or may be determined in a predefined manner. Please refer to the above description and will not repeat it here.

[0238] During the BWP switching, the terminal device performs frequency tuning at a designated location and transmits data in a frequency range where the first BWP is located and / or transmits data in a frequency range where the second BWP is located.

[0239] Exemplarily, after receiving the first DCI in time slot L and the frequency range where the first BWP is located, that is, the first frequency point, the terminal device can receive the first data information PDSCH1, and the time domain resources of PDSCH1 are indicated by the third DCI received by the terminal device before time slot L, and / or, the terminal device receives the second data information PDSCH2 in time slot L+1 and before performing frequency tuning, and the time domain resources of PDSCH2 are indicated by the fourth DCI received by the terminal device before time slot L to indicate the time domain resources of its corresponding data channel, and / or, the terminal device receives the second DCI in time slot L+1 and after the terminal device performs frequency tuning, in the frequency range where the second BWP is located, that is, the second frequency point.

[0240] It should be understood that the terminal device does not perform frequency tuning during the process of receiving PDSCH1, PDSCH2 and the second DCI.

[0241] Exemplarily, if the terminal device performs frequency tuning in the time domain resource range where PDSCH1 is received, the terminal device will discard PDSCH1, and / or, if the terminal device performs frequency tuning in the time domain resource range where PDSCH2 is received, the terminal device will discard PDSCH2, and / or if the terminal device performs frequency tuning in the time domain resource range where the second DCI is received, the terminal device will discard the second DCI.

[0242] Through the above technical solution, the terminal device or network device can flexibly schedule or configure the time domain position and time length of frequency tuning. When data transmission is interrupted due to BWP switching, data information can be received or sent during the frequency switching period. When there is a period of time between the end time of frequency tuning and the start time of the second time slot, the terminal device can also receive or send control information within the time interval, and can also receive or send data information. This application does not limit this.

[0243] The above Figure 5 and Figure 6 This document details the application of the technical solutions described in the embodiments of this application in BWP switching scenarios. In BWP switching scenarios, when the two BWPs before and after the switch differ only in frequency domain position while all other parameters remain the same, the technical solutions described in the embodiments of this application enable the terminal device to receive or transmit the first and third information within the switching delay of the frequency point switch. Furthermore, the terminal device can flexibly schedule or allocate the time domain position and duration for frequency tuning, thereby reducing information processing delay and increasing data transmission flexibility.

[0244] The following will be combined Figure 7 and Figure 8Another application scenario of the embodiment of the present application is described in detail. The application scenario is as follows: a terminal device receives first downlink control information DCI in a first time slot, and the first DCI instructs the terminal device to receive or send second information in a second time slot. The terminal device achieves receiving or sending the second information in the second time slot by frequency tuning. Figure 5 and Figure 6 The scenario shown is different in that the terminal device does not need to switch through the BWP, but only needs to tune the frequency to receive or send the second information at the new frequency domain position. The characteristics of the implementation scenario of the technical solution of the present application are the same.

[0245] As described above, flexible scheduling of data transmission can be achieved by flexibly scheduling or allocating the time domain position for frequency tuning of the terminal device and indicating the receiving or sending rules of the first information and the third information before and after the frequency tuning.

[0246] Similarly, in order to concisely describe the embodiments of the present application, Figure 7 and Figure 8 In the embodiment of the present application, the first information, the second information and the third information are all PDSCH as an example, the time slot offset K0 between the first time slot where the terminal device receives the first DCI and the second time slot where the second information is received or sent is 2 time slots as an example, and the initial time unit N in which the terminal device performs frequency tuning is associated with the number of symbol intervals between the starting position of the second time slot as an example, the technical solution of the embodiment of the present application is clearly and completely explained.

[0247] Figure 7 A schematic diagram of information reception and transmission before and after frequency tuning according to an embodiment of the present application is shown.

[0248] It should be understood that Figure 5 The difference between the scenarios shown is that Figure 7 In the scenario shown, the interval between the starting position of the frequency tuning of the terminal device and the starting position of the second time slot can be 0, that is, the terminal device can perform frequency tuning in the first few time domain symbols of the second time slot. In this scenario, the terminal device no longer receives or sends the third information between time unit M and time unit Y.

[0249] The initial time unit N during which the terminal device performs frequency tuning is associated with the H symbol intervals between the start positions of the second time slot. Figure 5 The description content will not be repeated here.

[0250] It should be understood that the time domain position H of the frequency tuning can be equal to the set {0, L1, L2, L3, ..., L M}, the specific value may be affected by one or more factors such as the subcarrier spacing between the first frequency point and the second frequency point, the data type of the first information and the second information.

[0251] For example, if the subcarrier spacing of the first frequency point is greater than the subcarrier spacing of the second frequency point, the value of H may be equal to 0, or, if the subcarrier spacing of the first frequency point is less than the subcarrier spacing of the second frequency point, the value of H may be equal to the set {L1, L2, L3, ..., L M}, the value of an element in L1, L2, L3, ..., L M An integer greater than 0.

[0252] For example, when the data transmitted on the first frequency point is a configured grant (CG) signal, and the data transmitted on the second frequency point is a downlink shared channel and / or an uplink shared channel, the value of N can be equal to the set {L1, L2, L3, ..., L M}, the value of an element in L1, L2, L3, ..., L M is an integer greater than 0; or, when the data transmitted on the second frequency point is a CG signal and the data transmitted on the first frequency point is a downlink shared channel and / or an uplink shared channel, the value of H can be equal to 0.

[0253] Exemplarily, when the data transmitted on the first frequency point is a CG signal, and the data transmitted on the second frequency point is a downlink shared channel and / or an uplink shared channel, regardless of whether the subcarrier spacing of the first frequency point is greater than the subcarrier spacing of the second frequency point, or the subcarrier spacing of the first frequency point is less than the subcarrier spacing of the second frequency point, the value of H can be the set {L1, L2, L3, ..., L M}, the L1, L2, L3, ... L M is an integer greater than 0; or, when the data transmitted at the second frequency point is a CG signal, and the data transmitted at the first frequency point is a downlink shared channel and / or an uplink shared channel, regardless of whether the subcarrier spacing of the first frequency point is greater than the subcarrier spacing of the second frequency point, or the subcarrier spacing of the first frequency point is less than the subcarrier spacing of the second frequency point, the value of H can be 0.

[0254] Exemplarily, when the transmission data on the first frequency point is a downlink shared channel and / or an uplink shared channel, the transmission data on the second frequency point is a downlink shared channel and / or an uplink shared channel, and / or the subcarrier spacing of the first frequency point is greater than the subcarrier spacing of the second frequency point, and / or the subcarrier spacing of the first frequency point is less than the subcarrier spacing of the second frequency point, the first number can be a value of the set {0, L1, L2, L3, ..., L M}One of them.

[0255] The priority of data can be determined by the terminal device based on its own capability, by the network device, or by an agreed rule, for example, in the order of priority of demodulation reference signal (DMRS) > PDCCH > PDSCH (PUSCH), so as to minimize the impact on high-priority data.

[0256] Through the above exemplary description, when the priority or importance of the data type transmitted at the first frequency point is higher than the priority or importance of the data type transmitted at the second frequency point, frequency tuning can be performed preferentially on the time slot where the frequency point with lower importance is located. In this way, the impact of frequency tuning on the transmission of higher importance data can be avoided; or, when the subcarrier spacing of the first frequency point is different from the subcarrier spacing of the second frequency point, frequency tuning can be performed preferentially on the time slot where the frequency point with lower subcarrier spacing is located. In this way, the number of time domain symbols occupied by frequency tuning can be reduced, thereby facilitating data transmission.

[0257] Figure 8 FIG. 1 shows a schematic diagram of information transmission and reception before and after frequency tuning according to an embodiment of the present application. Figure 8 shown.

[0258] It should be understood that Figure 7 The difference between the scenarios shown is that Figure 8 In the scenario shown, after receiving the first DCI at time slot L and the first frequency point, the terminal device can receive the first data information PDSCH1, and the time domain resources of PDSCH1 are indicated by the third DCI received by the terminal device before time slot L, and / or, the terminal device receives the second data information PDSCH2 at time slot L+1 and before performing frequency tuning, and the time domain resources of PDSCH2 are indicated by the DCI received by the terminal device before time slot L to indicate the time domain resources of its corresponding data channel, and / or, the terminal device receives the second DCI at time slot L+1 and at the second frequency point after the terminal device performs frequency tuning.

[0259] It should be understood that the terminal device does not perform frequency tuning during the process of receiving PDSCH1, PDSCH2 and the second DCI.

[0260] Through the above technical solution, the terminal device or network device can flexibly schedule or configure the time domain position and time length of frequency tuning. When data transmission is interrupted due to frequency tuning, data information can be received or sent during the frequency switching period. When there is a period of time between the end time of frequency tuning and the start time of the second time slot, the terminal device can also receive or send control information within the time interval, and can also receive or send data information, thereby realizing flexible scheduling of data transmission. This application does not limit this.

[0261] Figure 9 FIG1 shows a schematic block diagram of a communication device 900 according to an embodiment of the present application. The communication device may be a terminal device, or a component (such as a chip or circuit) that can be used in a terminal device. Figure 9 As shown, the communication device 900 may include a transceiver unit 901 and a processing unit 902 .

[0262] The transceiver unit 901 is used to receive the first DCI in the first time slot, where the first DCI is used to indicate the second time slot in which the terminal device transmits the second information, and the interval between the second time slot and the first time slot is greater than or equal to B time slots, where B is a positive integer.

[0263] The transceiver unit 901 is further configured to receive or send second information in the second time slot.

[0264] The transceiver unit 901 can also be used to receive or send the first information and the third information.

[0265] The processing unit 902 is configured to determine a second time slot for transmitting second information according to the first DCI, and can also be configured to perform frequency tuning.

[0266] The specific functions and beneficial effects of the transceiver unit 901 and the processing unit 902 can be found in the content of the aforementioned method side, and will not be repeated here.

[0267] In a possible embodiment, a communication device is also provided, which may be a terminal device or a component for a terminal device (such as a chip or circuit, etc.). The communication device may include a transceiver and a processor, and optionally, may also include a memory. The transceiver may be used to implement the corresponding functions and operations corresponding to the above-mentioned sending unit and processing unit, and the processor may be used to implement the corresponding functions and operations of the above-mentioned processing unit. The memory may be used to store execution instructions or application code, and the execution is controlled by the processor to implement the communication method provided in the above-mentioned embodiment of the present application; and / or, it may also be used to temporarily store some data and instruction information, etc. The memory may exist independently of the processor, in which case the memory may be connected to the processor via a communication line. In another possible design, the memory may also be integrated with the processor, which is not limited in the embodiment of the present application.

[0268] It should be understood that Figure 9 The communication device of the embodiment of the present application may also be a network device, or a component (such as a chip or circuit) that can be used for a network device. Figure 9 As shown, the communication device 900 may include a transceiver unit 901 and a processing unit 902 .

[0269] The transceiver unit 901 is used to send a first DCI, where the first DCI is used to indicate a second time slot for the terminal device to transmit second information, and is also used to indicate that the interval between the second time slot and the first time slot is greater than or equal to B time slots, where B is a positive integer.

[0270] The transceiver unit 901 is further configured to receive or send second information in the second time slot.

[0271] The transceiver unit 901 is further configured to receive or send the first information and the third information.

[0272] The processing unit 902 may be configured to determine a time domain position and a time domain length of frequency tuning.

[0273] The specific functions and beneficial effects of the transceiver unit 901 and the processing unit 902 can be found in the content of the aforementioned method side, and will not be repeated here.

[0274] In a possible embodiment, a communication device is also provided, which may be a network device or a component for a network device (such as a chip or circuit, etc.). The transmission device may include a transceiver and a processor, and optionally, may also include a memory. The transceiver may be used to implement the corresponding functions and operations corresponding to the above-mentioned sending unit and processing unit, and the processor may be used to implement the corresponding functions and operations of the above-mentioned processing unit. The memory may be used to store execution instructions or application code, and the execution is controlled by the processor to implement the communication method provided in the above-mentioned embodiment of the present application; and / or, it may also be used to temporarily store some data and instruction information, etc. The memory may exist independently of the processor, in which case the memory may be connected to the processor via a communication line. In another possible design, the memory may also be integrated with the processor, which is not limited in the embodiment of the present application.

[0275] Figure 10 This is a block diagram of the communication device structure provided by the embodiment of the present application. The communication device may be a terminal device. Figure 10 As shown, the terminal device includes a processor 1001, a radio frequency circuit, an antenna, and input / output devices. The processor 1001 can be used to process communication protocols and communication data, as well as control the terminal device, execute software programs, and process software program data. The radio frequency circuit is mainly used to convert baseband signals into radio frequency signals and process radio frequency signals. The antenna is mainly used to transmit and receive radio frequency signals in the form of electromagnetic waves. Input / output devices, such as a touch screen, display, and keyboard, are mainly used to receive data input by the user and output data to the user. It should be noted that some types of terminal devices may not have input / output devices. Optionally, the terminal device may also include a memory 1002, which is mainly used to store software programs and data.

[0276] When data needs to be sent, the processor 1001 performs baseband processing on the data to be sent and outputs the baseband signal to the RF circuit. The RF circuit performs RF processing on the baseband signal and then transmits the RF signal to the outside in the form of electromagnetic waves through the antenna. When data is sent to the terminal device, the RF circuit receives the RF signal through the antenna, converts the RF 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 ease of explanation, Figure 10 Only one memory and processor are shown. In actual terminal device products, one or more processors and one or more memories may exist. Memory may also be referred to as a storage medium or storage device. The memory may be provided independently of the processor or integrated with the processor, and this is not limited in the embodiments of the present application.

[0277] In the embodiments of the present application, the antenna and radio frequency circuit with transceiver functions can be regarded as the transceiver 1003 of the terminal device, and the processor with processing function can be regarded as the processing unit of the terminal device. The transceiver can also be referred to as a transceiver unit, a transceiver, a transceiver 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 device used to implement the receiving function in the transceiver 1003 can be regarded as a receiving unit, and the device used to implement the transmitting function in the transceiver 1003 can be regarded as a transmitting unit, that is, the transceiver 1003 includes a receiving unit and a transmitting unit. The receiving unit can sometimes also be referred to as a receiver, a receiver, or a receiving circuit, etc. The transmitting unit can sometimes also be referred to as a transmitter, a transmitter, or a transmitting circuit, etc.

[0278] The processor 1001 , the memory 1002 and the transceiver 1003 communicate with each other through internal connection paths to transmit control and / or data signals.

[0279] Optionally, in some embodiments, the memory 1002 may store instructions for executing Figure 3-8 The processor 1001 can execute the instructions stored in the memory 1002 and combine with other hardware (such as the transceiver 1003) to complete the following steps: Figure 3-8 The steps performed by the terminal device in the method shown, the specific working process and beneficial effects can be found in Figure 3-8 Description of the illustrated embodiment.

[0280] The methods disclosed in the embodiments of the present application described above can be applied to or implemented by processor 1001. Processor 1001 may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the method described above can be performed by hardware integrated logic circuits in processor 1001 or by software instructions.

[0281] Figure 11 : is a structural block diagram of a communication device provided in an embodiment of the present application. The communication device may be a network device. Figure 11 As shown, the network device includes a processor 1101, a radio frequency circuit, an antenna, and input / output devices. Processor 1101 can be used to process communication protocols and communication data, control the network device, execute software programs, process software program data, etc. The radio frequency circuit is mainly used to convert baseband signals into radio frequency signals and process radio frequency signals. The antenna is mainly used to transmit and receive radio frequency signals in the form of electromagnetic waves. Input / output devices, such as touch screens, displays, keyboards, etc., are mainly used to receive data input by users and output data to users. It should be noted that some types of network devices may not have input / output devices. Optionally, the network device may also include a memory 1102, which is mainly used to store software programs and data.

[0282] When data needs to be sent, the processor 1101 performs baseband processing on the data to be sent and outputs the baseband signal to the RF circuit. The RF circuit performs RF processing on the baseband signal and then transmits the RF signal to the outside in the form of electromagnetic waves through the antenna. When data is sent to the network device, the RF circuit receives the RF signal through the antenna, converts the RF 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 ease of explanation, Figure 11 Only one memory and processor are shown. In actual network equipment products, one or more processors and one or more memories may exist. A memory may also be referred to as a storage medium or storage device. The memory may be independent of the processor or integrated with the processor, and this is not limited in the present embodiment.

[0283] In the embodiments of the present application, the antenna and radio frequency circuit with transceiver functions can be regarded as the transceiver 1103 of the network device, and the processor with processing function can be regarded as the processing unit of the network device. The transceiver can also be referred to as a transceiver unit, a transceiver, a transceiver 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 device used to implement the receiving function in the transceiver 1103 can be regarded as a receiving unit, and the device used to implement the transmitting function in the transceiver 1103 can be regarded as a transmitting unit, that is, the transceiver 1103 includes a receiving unit and a transmitting unit. The receiving unit can sometimes also be referred to as a receiver, a receiver, or a receiving circuit, etc. The transmitting unit can sometimes also be referred to as a transmitter, a transmitter, or a transmitting circuit, etc.

[0284] The processor 1101 , the memory 1102 and the transceiver 1103 communicate with each other through internal connection paths to transmit control and / or data signals.

[0285] The methods disclosed in the embodiments of the present application described above can be applied to or implemented by processor 1101. Processor 1101 may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the method described above can be performed by hardware integrated logic circuits in processor 1101 or by software instructions.

[0286] The processors described in the various embodiments of the present application may be general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The various methods, steps, and logic block diagrams disclosed in the embodiments of the present application may be implemented or executed. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of the present application may be directly implemented as being executed by a hardware decoding processor, or may be executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in a storage medium mature in the art, such as random access memory (RAM), flash memory, read-only memory (ROM), programmable read-only memory, or electrically erasable programmable memory, registers, etc. The storage medium is located in a memory, and the processor reads instructions from the memory and, in conjunction with its hardware, completes the steps of the above-described method.

[0287] Optionally, in some embodiments, the memory 1102 may store instructions for executing the following steps: Figure 3-8 The processor 1101 can execute the instructions stored in the memory 1102 and combine with other hardware (such as the transceiver 1103) to complete the following method. Figure 3-8 The steps performed by the network device in the method shown, the specific working process and beneficial effects can be found in Figure 3-8 Description of the illustrated embodiment.

[0288] The present application also provides a chip comprising a transceiver unit and a processing unit. The transceiver unit may be an input / output circuit or a communication interface, and the processing unit may be a processor, microprocessor, or integrated circuit integrated on the chip. This chip can execute the methods described in the above method embodiments on both the network device side and the terminal device side.

[0289] An embodiment of the present application also provides a computer-readable storage medium having instructions stored thereon, which, when executed, execute the methods on the network device side and the terminal device side in the above method embodiment.

[0290] An embodiment of the present application also provides a computer program product comprising instructions, which, when executed, execute the methods on the network device side and the terminal device side in the above method embodiment.

[0291] An embodiment of the present application also provides a communication system, including a terminal device and a network device, which are respectively used to execute the methods on the terminal device side and the network device side in the above method embodiments.

[0292] In an embodiment of the present application, a terminal device or a 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 memory (also called main memory). The operating system can be any one or more computer operating systems that implement business processing through processes, such as 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 browsers, address books, word processing software, and instant messaging software. In addition, the embodiment of the present application does not specifically limit the specific structure of the execution subject of the method provided in the embodiment of the present application. As long as it is possible to communicate according to the method provided in the embodiment of the present application by running a program that records the code of the method provided in the embodiment of the present application, for example, the execution subject of the method provided in the embodiment of the present application can be a terminal device or a network device, or a functional module in a terminal device or a network device that can call a program and execute the program.

[0293] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0294] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0295] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0296] In the several embodiments provided in this application, the words "first", "second", "third", etc. used do not have a limiting effect and do not constitute a limitation on the scope of protection; at the same time, the A and / or B used, the "and / or" therein, include three situations: A, B and A and B.

[0297] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0298] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0299] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling 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 method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0300] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A communication method, characterized in that: include: The terminal device receives first downlink control information DCI in a first time slot; The terminal device determines, according to the first DCI, a second time slot for transmitting second information, where the second time slot is spaced from the first time slot by greater than or equal to B time slots, where B is a positive integer; The terminal device performs frequency tuning and transmits the second information in the second time slot. in, The terminal device transmits the first information within a time range between an end time of a time unit T and a start time of a time unit N, where the time unit N is a start time unit for the frequency tuning, wherein the start time of the time unit T is not earlier than the end time of a time unit K, where the time unit K is an end time unit for receiving the first DCI, or the start time of the time unit T is not earlier than the end time of a time unit R, where the time unit R is a time unit for parsing the first DCI; and, The terminal device transmits the third information within the time range between the end time of time unit M and the start time of time unit Y, where time unit M is the end time unit of the frequency tuning, and time unit Y is the start time unit of the third time slot, and the interval between the third time slot and the first time slot is equal to B time slots.

2. The method according to claim 1, characterized in that During the transmission of the first information and the third information, the frequency tuning is not performed; The transmitting includes receiving or sending.

3. The method according to claim 1, characterized in that The length of the time unit R is a predefined integer, or is configured by signaling, or is determined according to the capability of the terminal device.

4. The method according to claim 1, wherein The position of the time unit N is predefined, or configured by signaling, or determined according to the capability of the terminal device; The position of the time unit N belongs to a first position set, which includes multiple candidate positions of the time unit N.

5. The method according to claim 1, characterized in that The position of the time unit M belongs to a second position set, and the second position set includes multiple candidate positions of the time unit M; or, The end time of the time unit M is equal to the start time of the time unit Y.

6. The method according to claim 1, wherein B is the number of time slots included in the switching delay, or The B is the time slot offset value indicated by the time domain resource allocation field of the first DCI.

7. The method according to claim 1, characterized in that The method further comprises: The terminal device receives a first signaling, where the first signaling indicates a time length occupied by the frequency tuning; or, The terminal device sends first capability information to the network device, where the first capability information is used by the network device to determine the length of time occupied by the frequency tuning.

8. A communication method, characterized in that: include: The network device sends first downlink control information DCI in a first time slot, where the first DCI indicates a second time slot for the terminal device to transmit second information, where the second time slot is spaced from the first time slot by greater than or equal to B time slots, where B is a positive integer; The network device transmits second information in the second time slot, in, The network device transmits the first information within a time range between an end time of a time unit T and a start time of a time unit N, where the time unit N is a start time unit for the terminal device to perform frequency tuning, wherein the start time of the time unit T is not earlier than the end time of a time unit K, where the time unit K is an end time unit for sending the first DCI, or the start time of the time unit T is not earlier than the end time of a time unit R, where the time unit R is a time unit for the terminal device to parse the first DCI; and, The network device transmits the third information within the time range between the end moment of time unit M and the start moment of time unit Y, wherein time unit M is the end time unit for the terminal device to perform frequency tuning, and time unit Y is the start time unit of the third time slot, and the interval between the third time slot and the first time slot is equal to B time slots.

9. The method according to claim 8, characterized in that The transmitting includes receiving or sending.

10. The method according to claim 8, characterized in that The length of the time unit R is a predefined integer, or is configured by signaling, or is determined according to the capability of the terminal device.

11. The method according to claim 8, characterized in that The position of the time unit N is predefined, or configured by signaling, or determined according to the capability of the terminal device; The position of the time unit N belongs to a first position set, which includes multiple candidate positions of the time unit N.

12. The method according to claim 8, characterized in that The position of the time unit M belongs to a second position set, and the second position set includes multiple candidate positions of the time unit M; or, The end time of the time unit M is equal to the start time of the time unit Y.

13. The method according to claim 8, characterized in that B is the number of time slots included in the switching delay, or The B is the time slot offset value indicated by the time domain resource allocation field of the first DCI.

14. The method according to claim 8, characterized in that The method further comprises: The network device sends a first signaling, where the first signaling indicates a time length occupied by the frequency tuning; or, The network device receives first capability information, where the first capability information is used by the network device to determine a time length occupied by the frequency tuning.

15. A communication device, characterized in that: include: A transceiver unit, configured to receive first downlink control information DCI in a first time slot; A processing unit, configured to determine, according to the first DCI, a second time slot for transmitting second information, where the second time slot is spaced from the first time slot by greater than or equal to B time slots, where B is a positive integer; The processing unit is further configured to perform frequency tuning; The transceiver unit is further configured to transmit the second information in the second time slot, The transceiver unit is further configured to transmit the first information within a time range between the end time of time unit T and the start time of time unit N, where time unit N is the start time unit of the frequency tuning, wherein the start time of time unit T is not earlier than the end time of time unit K, and time unit K is the end time unit for receiving the first DCI, or the start time of time unit T is not earlier than the end time of time unit R, and time unit R is the time unit for parsing the first DCI; and The transceiver unit is also used to transmit third information within the time range between the end time of time unit M and the start time of time unit Y, where time unit M is the end time unit of the frequency tuning, and time unit Y is the start time unit of the third time slot, and the interval between the third time slot and the first time slot is equal to B time slots.

16. The device according to claim 15, characterized in that During the transmission of the first information and the third information, the frequency tuning is not performed; The transmitting includes receiving or sending.

17. The device according to claim 15, characterized in that The length of the time unit R is a predefined integer, or is configured by signaling, or is determined according to the capability of the communication device.

18. The device according to claim 15, characterized in that The position of the time unit N is predefined, or configured by signaling, or determined according to the capability of the communication device; The position of the time unit N belongs to a first position set, which includes multiple candidate positions of the time unit N.

19. The device according to claim 15, characterized in that The position of the time unit M belongs to a second position set, and the second position set includes multiple candidate positions of the time unit M; or, The end time of the time unit M is equal to the start time of the time unit Y.

20. The device according to claim 15, characterized in that B is the number of time slots included in the switching delay, or The B is the time slot offset value indicated by the time domain resource allocation field of the first DCI.

21. The device according to claim 15, characterized in that The transceiver unit is further configured to: receiving a first signaling indicating a time length occupied by the frequency tuning; or, First capability information is sent to a network device, where the first capability information is used by the network device to determine a time length occupied by the frequency tuning.

22. A communication device, characterized in that: include: A transceiver unit, configured to send first downlink control information DCI in a first time slot, where the first DCI indicates a second time slot for a terminal device to transmit second information, where the second time slot is spaced from the first time slot by greater than or equal to B time slots, where B is a positive integer; The transceiver unit is further configured to transmit the second information in the second time slot, The transceiver unit is further configured to transmit the first information within a time range between the end time of the time unit T and the start time of the time unit N, where the time unit N is the start time unit for the terminal device to perform frequency tuning, wherein the start time of the time unit T is not earlier than the end time of the time unit K, and the time unit K is the end time unit for sending the first DCI, or the start time of the time unit T is not earlier than the end time of the time unit R, and the time unit R is the time unit for the terminal device to parse the first DCI; and The transceiver unit is also used to transmit third information within the time range between the end time of time unit M and the start time of time unit Y, where time unit M is the end time unit for the terminal device to perform frequency tuning, and time unit Y is the start time unit of the third time slot, and the interval between the third time slot and the first time slot is equal to B time slots.

23. The device according to claim 22, characterized in that The transmitting includes receiving or sending.

24. The device according to claim 22, characterized in that The length of the time unit R is a predefined integer, or is configured by signaling, or is determined according to the capability of the terminal device.

25. The device according to claim 22, characterized in that The position of the time unit N is predefined, or configured by signaling, or determined according to the capability of the terminal device; The position of the time unit N belongs to a first position set, which includes multiple candidate positions of the time unit N.

26. The device according to claim 22, characterized in that The position of the time unit M belongs to a second position set, and the second position set includes multiple candidate positions of the time unit M; or, The end time of the time unit M is equal to the start time of the time unit Y.

27. The device according to claim 22, characterized in that B is the number of time slots included in the switching delay, or The B is the time slot offset value indicated by the time domain resource allocation field of the first DCI.

28. The device according to claim 22, characterized in that The transceiver unit is further configured to: sending a first signaling, where the first signaling indicates a time length occupied by the frequency tuning; or, First capability information is received, where the first capability information is used by the communication device to determine a length of time occupied by the frequency tuning.

29. A communication device, characterized in that: include: A processor and a memory, the processor being coupled to the memory, the memory being used to store a computer program, the processor being used to execute the computer program stored in the memory, so that the communication device performs the communication method according to any one of claims 1 to 7, or so that the communication device performs the communication method according to any one of claims 8 to 14.

30. A computer-readable storage medium storing instructions, which, when executed on a computer, causes the computer to execute the communication method according to any one of claims 1 to 7, or causes the computer to execute the communication method according to any one of claims 8 to 14.

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