Switching method and terminal equipment

Abstract

The invention provides a switching method and terminal equipment. The method may comprise the following steps: when a first frequency domain resource set is switched to a second frequency domain resource set for data transmission, determining a frequency domain resource set where switching time is located; wherein the first frequency domain resource set comprises at least one frequency band, the second frequency domain resource set comprises at least one frequency band, each of the first frequency domain resource set and the second frequency domain resource set comprises a first frequency band, and the priority of the first frequency band is higher than that of other frequency bands in the first frequency domain resource set and the second frequency domain resource set; the frequency domain resource set is a frequency domain resource set where the first frequency band without information transmission is located. According to the technical scheme, the terminal equipment can clearly determine the frequency band where the switching time is located, and the frequency spectrum use efficiency of the terminal equipment can be improved.

Description

Technical Field

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

[0002] Currently, the network device can instruct the terminal device to send uplink data. For example, the network device can instruct the terminal device to send uplink data on a frequency band through downlink control information (DCI). In some cases, the terminal device may need to switch the frequency band to be used due to changes in the channel state or load conditions on the frequency band.

[0003] In the process of switching from one frequency band to another, a switching period is required. During the switching period, the terminal device cannot continue to transmit uplink data on the frequency band. Therefore, the terminal device needs to know clearly which frequency band the switching period is located. Summary of the invention

[0004] The present application provides a switching method and a terminal device, and the technical solution can enable the terminal device to improve the spectrum utilization efficiency of the terminal device.

[0005] In a first aspect, a switching method is provided, which is applied to a terminal device, and the method includes: when switching from a first frequency domain resource set to a second frequency domain resource set for data transmission, determining a frequency domain resource set where the switching time is located; wherein, the first frequency domain resource set includes at least one frequency band, the second frequency domain resource set includes at least one frequency band, the first frequency domain resource set and the second frequency domain resource set both include a first frequency band, and the priority of the first frequency band is higher than the priority of other frequency bands in the first frequency domain resource set and the second frequency domain resource set; the frequency domain resource set is a frequency domain resource set where the first frequency band that does not have information transmission is located.

[0006] The frequency domain resource set is a frequency domain resource set where the switching time is located.

[0007] It should be understood that the first frequency domain resource set may correspond to the frequency band before switching, and the second frequency domain resource set may correspond to the frequency band after switching. In the present application, corresponding to may also be understood as: "for" or "belonging to".

[0008] Based on the embodiment of the present application, when both the first frequency domain resource set and the second frequency domain resource set include the first frequency band, and the priority of the first frequency band is higher than the priority of other frequency bands in the first frequency domain resource set and the second frequency domain resource set, when the terminal device switches from the first frequency domain resource set to the second frequency domain resource set for data transmission, it is determined that the frequency domain resource set where the switching time is located is the frequency domain resource set where the first frequency band without information transmission is located. Therefore, the switching time is located in the frequency domain resource set without information transmission, so that the terminal device will not interrupt the data transmission of the first frequency band with actual information transmission, avoiding the problem of reducing the spectrum utilization efficiency caused by the switching time being located in the first frequency band with actual information transmission.

[0009] The technical solution can also be described as: the method includes: when switching from a first frequency domain resource set to a second frequency domain resource set for data transmission, determining the frequency domain resources where the switching time is located; wherein, the first frequency domain resource set includes at least one frequency band, the second frequency domain resource set includes at least one frequency band, the first frequency domain resource set and the second frequency domain resource set both include a first frequency band, and the priority of the first frequency band is higher than the priority of other frequency bands in the first frequency domain resource set and the second frequency domain resource set; the frequency domain resources are located in the frequency domain resource set where the first frequency band that does not have information transmission is located.

[0010] In one possible implementation, the first frequency band included in the first frequency domain resource set has information transmission, and the first frequency band included in the second frequency domain resource set does not have information transmission; or, the first frequency band included in the first frequency domain resource set does not have information transmission, and the first frequency band included in the second frequency domain resource set has information transmission.

[0011] Based on the embodiment of the present application, the first frequency band included in the first frequency domain resource set has information transmission, and the first frequency band included in the second frequency domain resource set does not have information transmission, and the terminal device can determine that the target frequency domain resource is the second frequency domain resource set; or, the first frequency band included in the first frequency domain resource set does not have information transmission, and the first frequency band included in the second frequency domain resource set has information transmission, and the terminal device can determine that the target frequency domain resource is the first frequency domain resource set. Therefore, this technical solution is conducive to the terminal device to clearly know the frequency domain resource set where the switching time is located, and the switching time is located on the side without information transmission, so that the side with information transmission can be protected from being interrupted.

[0012] Optionally, when the first frequency bands in the first frequency domain resource set and the second frequency domain resource set have no information transmission, when the terminal device switches from the first frequency domain resource set to the second frequency domain resource set for data transmission, the terminal device determines that the frequency domain resource at the switching time is the first frequency domain resource set or the second frequency domain resource set where the second frequency band is not located. The priority of the second frequency band is the second highest priority, that is, the priority of the second frequency band is only lower than the priority of the first frequency band.

[0013] Based on the embodiment of the present application, when the first frequency band with the highest priority cannot have information transmission before and after the switching, the terminal device can determine the corresponding switching time according to the second frequency band with the second highest priority, so as to facilitate the terminal device to clearly identify the frequency band where the switching time is located. That is, the terminal device can identify the highest priority frequency band in other frequency bands belonging to the first resource set and the second resource set except the first frequency band, so as to protect the highest priority frequency band with information transmission while clarifying the frequency band where the switching time is located.

[0014] In a possible implementation, the method further includes: the terminal device determines that the priority of a first frequency band without information transmission in the first frequency domain resource set and the second frequency domain resource set is lower than the priority of a first frequency band with information transmission.

[0015] Alternatively, the technical solution can also be described as: the terminal device determines that the priority of the first frequency band with information transmission in the first frequency domain resource set and the second frequency domain resource set is higher than the priority of the first frequency band without information transmission.

[0016] Based on the embodiments of the present application, when the first frequency domain resource set (frequency band before switching) or the second frequency domain resource set (frequency band after switching) both include the first frequency band, the terminal device can determine that the priority of the first frequency band without information transmission is lower than the priority of the first frequency band with information transmission, and thus can determine that the switching time is in the first frequency domain resource set (frequency band before switching) or the second frequency domain resource set (frequency band after switching) where the first frequency band with low priority is located.

[0017] In a possible implementation manner, the priority of the first frequency band without information transmission in the first frequency domain resource set and the second frequency domain resource set is lower than the priority of the first frequency band with information transmission.

[0018] Alternatively, the technical solution may also be described as: the priority of the first frequency band with information transmission in the first frequency domain resource set and the second frequency domain resource set is higher than the priority of the first frequency band without information transmission.

[0019] It can be understood that the determination rule of the priority relationship can be configured by the network device for the terminal device, or can be determined by the terminal device itself, or can be predefined or preconfigured, and the embodiments of the present application are not limited thereto.

[0020] Based on the embodiments of the present application, the terminal device can determine that the priority of the first frequency band without information transmission is lower than the priority of the first frequency band with information transmission, so that the switching time can be determined in the first frequency domain resource set (frequency band before switching) or the second frequency domain resource set (frequency band after switching) where the first frequency band with low priority is located.

[0021] In one possible implementation, the terminal device supports concurrent uplink in a frequency band of at least one of the first frequency domain resource set and the second frequency domain resource set; or, the terminal device can or performs concurrent uplink in a frequency band of at least one of the first frequency domain resource set and the second frequency domain resource set.

[0022] It can be understood that concurrent uplink can be understood as that the terminal device can transmit uplink data concurrently in real time on two frequency bands.

[0023] The terminal device supports concurrent uplink in the frequency band of at least one of the first frequency domain resource set and the second frequency domain resource set. It can also be understood that the terminal device can support concurrent uplink in the frequency band of the first frequency domain resource set and / or the second frequency domain resource set.

[0024] In this way, the terminal device can work simultaneously on multiple frequency bands through multiple RF chains, thereby avoiding transmission congestion and reducing data transmission delay.

[0025] In a possible implementation, when the first frequency domain resource set is switched with other frequency bands in the second frequency domain resource set, the terminal device cannot maintain data transmission on the first frequency band.

[0026] When the first frequency domain resource set is switched with other frequency bands in the second frequency domain resource set, the terminal device cannot maintain data transmission on the first frequency band, which can be understood as the inability to continue to transmit data on the first frequency band during the switching of other frequency bands. Alternatively, the switching of the RF chain on the first frequency band will be affected by the switching of other RF chains, and the RF chain on the first frequency band cannot continue to work during the switching of other RF chains.

[0027] In a second aspect, a switching method is provided, which is applied to a terminal device, and the method includes: when switching from a first frequency domain resource set to a second frequency domain resource set for data transmission, determining the frequency domain resource set where the switching time is located; wherein, the first frequency domain resource set includes at least one frequency band, the second frequency domain resource set includes at least one frequency band, the first frequency domain resource set and the second frequency domain resource set both include a first frequency band, and the priority of the first frequency band is higher than the priority of other frequency bands in the first frequency domain resource set and the second frequency domain resource set; the frequency domain resource set is a frequency domain resource set with more vacant symbols in the first frequency domain resource set or the second frequency domain resource set.

[0028] The frequency domain resource set is a frequency domain resource set where the switching time is located.

[0029] The vacant symbol in the present application can be understood as a symbol without data transmission. It should be understood that the data transmission in the present application can also be understood as information transmission or scheduled transmission, etc. Among them, the transmission can be uplink transmission or downlink transmission.

[0030] Based on the embodiment of the present application, when both the first frequency domain resource set and the second frequency domain resource set include the first frequency band, and the priority of the first frequency band is higher than the priority of other frequency bands in the first frequency domain resource set and the second frequency domain resource set, when the terminal device switches from the first frequency domain resource set to the second frequency domain resource set for data transmission, it is determined that the frequency domain resource set where the switching time is located is the frequency domain resource set with more vacant symbols of the first frequency band in the first frequency domain resource set or the second frequency domain resource set. Therefore, the switching time is located in the frequency domain resource set with more vacant symbols, so that symbols with actual information transmission can be avoided from being used for switching, thereby improving the spectrum utilization efficiency of the terminal device.

[0031] In a possible implementation, the number of vacant symbols of the first frequency band in the first frequency domain resource set is the number of vacant symbols at the end of the time slot where the first frequency band is located, and the number of vacant symbols of the first frequency band in the second frequency domain resource set is the number of vacant symbols at the beginning of the time slot where the first frequency band is located.

[0032] In some implementations, the terminal device determines a set of frequency domain resources where the switching time is located, which can also be understood as the terminal device determining the frequency domain resources where the switching time is located.

[0033] In this case, the frequency domain resource set is a frequency domain resource set with more empty symbols in the first frequency band in the first frequency domain resource set or the second frequency domain resource set. It can also be understood that the frequency domain resources where the switching time is located are located in the frequency domain resource set where the first frequency band with more empty symbols is located.

[0034] Alternatively, the frequency domain resource set is a frequency domain resource set with more empty symbols in the first frequency band in the first frequency domain resource set or the second frequency domain resource set. It can also be understood that the frequency domain resource at the switching time is the pre-switching frequency band or the post-switching frequency band where the first frequency band with more empty symbols is located.

[0035] According to a third aspect, a switching method is provided, which is applied to a terminal device, and the method comprises: when switching from a first frequency domain resource set to a second frequency domain resource set for data transmission, determining a frequency domain resource set where the switching time is located; wherein, the first frequency domain resource set includes at least one frequency band, the second frequency domain resource set includes at least one frequency band, the first frequency domain resource set and the second frequency domain resource set both include a first frequency band, and the priority of the first frequency band is higher than the priority of other frequency bands in the first frequency domain resource set and the second frequency domain resource set; the frequency domain resource set is a frequency domain resource set in which the information carried by the first frequency band in the first frequency domain resource set or the second frequency domain resource set does not include uplink control information.

[0036] The frequency domain resource set is a frequency domain resource set where the switching time is located.

[0037] Based on the embodiments of the present application, when the information carried in a frequency domain resource set in the first frequency band includes uplink control information, and the information carried in another frequency domain resource set does not include uplink control information, it means that the first frequency band carrying the uplink control information is more important. Therefore, the terminal device determines that the frequency domain resource set where the switching time is located is the frequency domain resource set that carries information that does not include uplink control information, thereby protecting the transmission of the uplink control information from being interrupted.

[0038] In some implementations, the terminal device determines a set of frequency domain resources where the switching time is located, which can also be understood as the terminal device determining the frequency domain resources where the switching time is located.

[0039] In this case, the frequency domain resource set is a frequency domain resource set in which the information carried by the first frequency band in the first frequency domain resource set or the second frequency domain resource set does not include uplink control information. It can also be understood that the frequency domain resource where the switching time is located is located in the frequency domain resource set where the first frequency band that does not carry uplink control information is located.

[0040] Alternatively, the frequency domain resource set is a frequency domain resource set in which the information carried by the first frequency band in the first frequency domain resource set or the second frequency domain resource set does not include uplink control information. It can also be understood that the frequency domain resource where the switching time is located is located in the pre-switching frequency band or the post-switching frequency band where the first frequency band that does not carry uplink control information is located.

[0041] In a possible implementation manner, the uplink control information includes at least one of a hybrid automatic repeat request and channel state information.

[0042] The uplink control information may also include other information, such as an automatic retransmission request, etc., which is not limited in the embodiment of the present application.

[0043] In a fourth aspect, a switching method is provided, which is applied to a terminal device, and the method includes: determining a target frequency domain resource set where a switching time is located; the switching time is the time for switching from a first frequency domain resource set to a second frequency domain resource set for data transmission; sending first indication information, and the first indication information is used to indicate the target frequency domain resource set; wherein the first frequency domain resource set includes at least one frequency band, the second frequency domain resource set includes at least one frequency band, the first frequency domain resource set and the second frequency domain resource set both include a first frequency band, and the priority of the first frequency band is higher than the priority of other frequency bands in the first frequency domain resource set and the second frequency domain resource set.

[0044] Exemplarily, the target frequency domain resource set may be a first frequency domain resource set or a second frequency domain resource set. For example, the target frequency domain resource set may be randomly selected by the terminal device, or the target frequency domain resource set may be selected by the terminal device based on a certain rule, which is not limited in the embodiments of the present application.

[0045] It can be understood that the target frequency domain resource set where the switching time is located can also be understood as the target frequency domain resource set where the switching time expected or preferred by the terminal device is located. The tendency can also be understood as more inclined (preferred).

[0046] Based on the embodiments of the present application, after determining the target frequency domain resource set where the switching time is located, the terminal device can send an indication message to the network device to indicate the network device the target frequency domain resource set where the switching time is located, thereby facilitating the network device to determine the target frequency domain resource set where the switching time is located, so as to further perform scheduling and other operations.

[0047] It can be understood that when the target frequency domain resource set is the first frequency domain resource set, it is beneficial for the transmission of reference information of the frequency band after switching to not be interrupted. When the target frequency domain resource set is the second frequency domain resource set, it is beneficial for the frequency band after switching to include the first frequency band as the associated frequency band, and the information transmission of the frequency band before switching where the first frequency band with high protection priority is located is not interrupted.

[0048] In a fifth aspect, a switching method is provided, characterized in that the method is applied to a terminal device, and the method includes: when switching from a first frequency domain resource set to a second frequency domain resource set for information transmission, determining a target frequency domain resource at which the switching time is located; the target frequency domain resource belongs to a third frequency domain resource set; the first target frequency band belonging to the third frequency domain resource set satisfies the following characteristics: the first target frequency band is both a pre-switching frequency band and a post-switching frequency band, and one of the pre-switching frequency band or the post-switching frequency band is a frequency band without information transmission; wherein the third frequency domain resource set is a subset of a set consisting of the first frequency domain resource set and the second frequency domain resource set; the switching time is the time for switching from the first frequency domain resource set to the second frequency domain resource set for information transmission.

[0049] Based on the embodiment of the present application, when the first target frequency band is both the pre-switching frequency band and the post-switching frequency band, it helps the terminal device to determine the target frequency domain resources where the switching time is located.

[0050] In one possible implementation, the terminal device determines the target frequency domain resource at the switching time, including: the terminal device determines the target frequency domain resource from the third frequency domain resource set, and the target frequency domain resource is a pre-switching frequency band or a post-switching frequency band that does not have the highest priority.

[0051] Based on the embodiments of the present application, it helps to protect the information transmission in the highest priority frequency band from being affected.

[0052] In one possible implementation, the priority of a frequency band without information transmission in one of the pre-switching frequency band or the post-switching frequency band where the first target frequency band is located is lower than the priority of a frequency band with information transmission; or, the priority of a frequency band with information transmission in one of the pre-switching frequency band or the post-switching frequency band where the first target frequency band is located is higher than the priority of a frequency band without information transmission.

[0053] It should be understood that the terminal device determines that the target frequency domain resource where the switching time is located is on the side with low priority.

[0054] Based on the embodiment of the present application, the terminal device can clearly determine the priority of the first target frequency band in the frequency band before switching or the frequency band after switching, so that the terminal device can determine that the target frequency domain resource at the switching time is on the low priority side.

[0055] In a possible implementation, the method also includes: the terminal device determines that the priority of the first target frequency band that does not have information transmission in one of the frequency bands before switching or the frequency bands after switching is lower than the priority of the frequency band with information transmission; or, the terminal device determines that the priority of the first target frequency band that has information transmission in one of the frequency bands before switching or the frequency bands after switching is higher than the priority of the frequency band without information transmission.

[0056] It should be understood that the terminal device determines that the target frequency domain resource where the switching time is located is on the side with low priority.

[0057] Based on the embodiment of the present application, the terminal device can clearly determine the priority of the first target frequency band in the frequency band before switching or the frequency band after switching, so that the terminal device can determine that the target frequency domain resource at the switching time is on the low priority side.

[0058] In one possible implementation, the terminal device supports concurrent uplink in a frequency band of at least one of the first frequency domain resource set and the second frequency domain resource set; or, the terminal device can or performs concurrent uplink in a frequency band of at least one of the first frequency domain resource set and the second frequency domain resource set.

[0059] In this way, terminal devices can work simultaneously on multiple frequency bands, thereby avoiding transmission congestion and reducing data transmission delays.

[0060] In a possible implementation, when the first frequency domain resource set is switched with other frequency bands in the second frequency domain resource set, the terminal device cannot maintain data transmission on the first target frequency band.

[0061] In a possible implementation, the terminal device determines the target frequency domain resources at the switching time, including: the terminal device determines the target frequency domain resources according to the number of vacant symbols in the time slots where the frequency band before switching and the frequency band after switching are located.

[0062] In one possible implementation, the target frequency domain resources are determined based on the number of vacant symbols in the time slots where the pre-switching frequency band and the post-switching frequency band are located, including: the terminal device determines that the target frequency domain resources are the side with more vacant symbols in the pre-switching frequency band or the post-switching frequency band where the first target frequency band is located.

[0063] Based on the embodiment of the present application, the switching time is located on the side with more vacant symbols, so as to avoid symbols with actual information transmission being used for switching, thereby improving the spectrum utilization efficiency of the terminal device.

[0064] In a possible implementation, the number of vacant symbols in the time slot where the frequency band before switching is located is the number of vacant symbols at the end of the time slot where the first target frequency band is located, and the number of vacant symbols in the time slot where the frequency band after switching is located is the number of vacant symbols at the beginning of the time slot where the first target frequency band is located.

[0065] In one possible implementation, the terminal device determines the priority of the pre-switching frequency band where the first target frequency band is located and the priority of the post-switching frequency band where the first target frequency band is located; the terminal device determines the target frequency domain resources where the switching time is located, including: the terminal device determines that the target frequency domain resources where the switching time is located are the pre-switching frequency band or the post-switching frequency band where the first target frequency band is located with a lower priority.

[0066] Based on the embodiment of the present application, the terminal device can determine that the target frequency domain resource at the switching time is the pre-switching frequency band or the post-switching frequency band where the first target frequency band with low priority is located, which is beneficial to protect the information transmission of the high-priority frequency band from being affected.

[0067] In one possible implementation, the terminal device determines the priority of a pre-switching frequency band where the first target frequency band is located and the priority of a post-switching frequency band where the first target frequency band is located, including: when the information carried by the pre-switching frequency band where the first target frequency band is located includes uplink control information, the terminal device determines that the priority of the pre-switching frequency band where the first target frequency band is located is higher than the priority of the post-switching frequency band where the first target frequency band is located; or, when the information carried by the post-switching frequency band where the first target frequency band is located includes uplink control information, the terminal device determines that the priority of the post-switching frequency band where the first target frequency band is located is higher than the priority of the pre-switching frequency band where the first target frequency band is located.

[0068] Based on the embodiment of the present application, the terminal device determines that the frequency domain resource where the switching time is located is a frequency band that carries information but does not include uplink control information, thereby protecting the transmission of the uplink control information from being interrupted.

[0069] In a sixth aspect, a switching method is provided, characterized in that the method is applied to a terminal device, and the method includes: when switching from a first frequency domain resource set to a second frequency domain resource set, determining that the target frequency domain resource at the switching time is one of the pre-switching frequency band or the post-switching frequency band where the second target frequency band is located; the second target frequency band satisfies the following conditions: the pre-switching frequency band corresponding to the first frequency domain resource set includes the second target frequency band, and the post-switching frequency band corresponding to the second frequency domain resource set includes the second target frequency band; the second target frequency band has the highest priority; the second target frequency band is a frequency band without information transmission in one of the pre-switching frequency band or the post-switching frequency band, or the second target frequency band is a frequency band with information transmission in one of the pre-switching frequency band or the post-switching frequency band.

[0070] The second target frequency band is a frequency band without information transmission in one of the frequency band before switching or the frequency band after switching, or the second target frequency band is a frequency band with information transmission in one of the frequency band before switching or the frequency band after switching. It can be understood that the second target frequency band is a frequency band without information transmission in one of the frequency band before switching or the frequency band after switching, and is a frequency band with information transmission in the other.

[0071] Based on the embodiments of the present application, it helps the terminal device to determine the target frequency domain resources where the switching time is located.

[0072] In one possible implementation, the target frequency domain resource for determining the switching time is one of the pre-switching frequency band or the post-switching frequency band where the second target frequency band is located, including: when the second target frequency band is a frequency band without information transmission in the post-switching frequency band, and / or the second target frequency band is a frequency band with information transmission in the pre-switching frequency band, determining that the frequency domain resource for the switching time is the post-switching frequency band where the second target frequency band is located; and / or, when the second target frequency band is a frequency band without information transmission in the pre-switching frequency band, and / or the second target frequency band is a frequency band with information transmission in the post-switching frequency band, determining that the frequency domain resource for the switching time is the pre-switching frequency band where the second target frequency band is located.

[0073] Based on the embodiments of the present application, the terminal device can determine that the target frequency domain resource where the switching time is located is a frequency band without information transmission, so that the terminal device will not interrupt the data transmission of the frequency band with actual information transmission, avoiding the problem of reduced spectrum utilization efficiency when the switching time is located in the frequency band with actual information transmission.

[0074] In a possible implementation manner, the second target frequency band is a frequency band that does not have the highest priority.

[0075] Based on the embodiments of the present application, it helps to protect the information transmission in the highest priority frequency band from being affected.

[0076] In one possible implementation, the priority of the frequency band without information transmission in one of the pre-switching frequency band or the post-switching frequency band where the second target frequency band is located is lower than the priority of the frequency band with information transmission; or, the priority of the frequency band with information transmission in one of the pre-switching frequency band or the post-switching frequency band where the second target frequency band is located is higher than the priority of the frequency band without information transmission.

[0077] It should be understood that the terminal device determines that the target frequency domain resource where the switching time is located is on the side with low priority.

[0078] Based on the embodiment of the present application, the terminal device can clearly determine the priority of the second target frequency band in the frequency band before switching or the frequency band after switching, so that the terminal device can determine that the target frequency domain resource at the switching time is on the low priority side.

[0079] In a possible implementation manner, the method further includes: the terminal device determines that the priority of a frequency band without information transmission in one of the pre-switching frequency band or the post-switching frequency band where the second target frequency band is located is lower than the priority of a frequency band with information transmission; or

[0080] The terminal device determines that the priority of the frequency band with information transmission in one of the pre-switching frequency band or the post-switching frequency band where the second target frequency band is located is higher than the priority of the frequency band without information transmission.

[0081] In one possible implementation, the terminal device supports concurrent uplink in a frequency band of at least one of the first frequency domain resource set and the second frequency domain resource set; or, the terminal device can or performs concurrent uplink in a frequency band of at least one of the first frequency domain resource set and the second frequency domain resource set.

[0082] In this way, terminal devices can work simultaneously on multiple frequency bands, thereby avoiding transmission congestion and reducing data transmission delays.

[0083] In one possible implementation, the target frequency domain resource where the switching time is determined is one of the pre-switching frequency band or the post-switching frequency band where the second target frequency band is located, including: the terminal device determines that the target frequency domain resource is the side with a larger number of vacant symbols in the time slot where the pre-switching frequency band or the post-switching frequency band where the second target frequency band is located.

[0084] Based on the embodiment of the present application, the switching time is located on the side with more vacant symbols, so as to avoid symbols with actual information transmission being used for switching, thereby improving the spectrum utilization efficiency of the terminal device.

[0085] In a possible implementation, the method also includes: the terminal device determines the priority of the pre-switching frequency band where the second target frequency band is located and the priority of the post-switching frequency band where the second target frequency band is located; the target frequency domain resource where the switching time is located is determined to be one of the pre-switching frequency band or the post-switching frequency band where the second target frequency band is located, including: the terminal device determines that the target frequency domain resource where the switching time is located is the pre-switching frequency band or the post-switching frequency band where the second target frequency band with a lower priority is located.

[0086] Based on the embodiment of the present application, the terminal device can determine that the target frequency domain resource at the switching time is the pre-switching frequency band or the post-switching frequency band where the second target frequency band with low priority is located, which is beneficial to protect the information transmission of the high-priority frequency band from being affected.

[0087] In one possible implementation, the terminal device determines the priority of the pre-switching frequency band where the second target frequency band is located and the priority of the post-switching frequency band where the second target frequency band is located, including: when the information carried by the pre-switching frequency band where the second target frequency band is located includes uplink control information, the terminal device determines that the priority of the pre-switching frequency band where the second target frequency band is located is higher than the priority of the post-switching frequency band where the second target frequency band is located; or, when the information carried by the post-switching frequency band where the second target frequency band is located includes uplink control information, the terminal device determines that the priority of the post-switching frequency band where the second target frequency band is located is higher than the priority of the pre-switching frequency band where the second target frequency band is located.

[0088] Based on the embodiment of the present application, the terminal device determines that the frequency domain resource where the switching time is located is a frequency band that carries information but does not include uplink control information, thereby protecting the transmission of the uplink control information from being interrupted.

[0089] In a seventh aspect, a switching method is provided, which is applied to a terminal device, and the method includes: when switching from a first frequency domain resource set to a second frequency domain resource set for data transmission, determining the frequency domain resource set where the switching time is located; wherein, the first frequency domain resource set includes at least one frequency band, the second frequency domain resource set includes at least one frequency band, the first frequency domain resource set and the second frequency domain resource set both include a first frequency band, and the priority of the first frequency band is higher than the priority of other frequency bands in the first frequency domain resource set and the second frequency domain resource set; when the first frequency band in both the first frequency domain resource set and the second frequency domain resource set has no information transmission, the terminal device determines that the frequency domain resource set where the switching time is located is the first frequency domain resource set or the second frequency domain resource set where the second frequency band is not located, and the priority of the second frequency band is the second highest priority.

[0090] Based on the embodiments of the present application, when the first frequency band with the highest priority has no information transmission before and after switching or has information transmission, the terminal device can determine the corresponding switching time based on the second frequency band with the second highest priority, which is conducive to the terminal device to clearly identify the frequency band where the switching time is located.

[0091] In an eighth aspect, a switching method is provided, which is applied to a terminal device, and the method includes: when switching from a first frequency domain resource set to a second frequency domain resource set for data transmission, determining the frequency domain resource set where the switching time is located; wherein, the first frequency domain resource set includes at least one frequency band, the second frequency domain resource set includes at least one frequency band, the first frequency domain resource set and the second frequency domain resource set both include a first frequency band, and the priority of the first frequency band is higher than the priority of other frequency bands in the first frequency domain resource set and the second frequency domain resource set; when the first frequency bands in the first frequency domain resource set and the second frequency domain resource set both have information transmission, the terminal device determines that the frequency domain resource where the switching time is located is the first frequency domain resource set or the second frequency domain resource set where the second frequency band is not located, and the priority of the second frequency band is the second highest priority.

[0092] Based on the embodiments of the present application, when the first frequency band with the highest priority has information transmission before and after switching or has information transmission, the terminal device can determine the corresponding switching time based on the second frequency band with the second highest priority, which is conducive to the terminal device to clearly identify the frequency band where the switching time is located.

[0093] In a ninth aspect, a terminal device is provided, comprising: a processing module, the processing module being used to determine the frequency domain resource set where the switching time is located when switching from a first frequency domain resource set to a second frequency domain resource set for data transmission; wherein the first frequency domain resource set includes at least one frequency band, the second frequency domain resource set includes at least one frequency band, the first frequency domain resource set and the second frequency domain resource set both include a first frequency band, and the priority of the first frequency band is higher than the priority of other frequency bands in the first frequency domain resource set and the second frequency domain resource set; the frequency domain resource set is a frequency domain resource set where the first frequency band that does not have information transmission is located. In one possible implementation,

[0094] In one possible implementation, the first frequency band included in the first frequency domain resource set has information transmission, and the first frequency band included in the second frequency domain resource set does not have information transmission; or, the first frequency band included in the first frequency domain resource set does not have information transmission, and the first frequency band included in the second frequency domain resource set has information transmission.

[0095] In a possible implementation, the processing module is further used to: determine that the priority of the first frequency band without information transmission in the first frequency domain resource set and the second frequency domain resource set is lower than the priority of the first frequency band with information transmission.

[0096] In a possible implementation manner, the priority of the first frequency band without information transmission in the first frequency domain resource set and the second frequency domain resource set is lower than the priority of the first frequency band with information transmission.

[0097] In one possible implementation, the terminal device supports concurrent uplink in a frequency band of at least one of the first frequency domain resource set and the second frequency domain resource set; or, the terminal device can or performs concurrent uplink in a frequency band of at least one of the first frequency domain resource set and the second frequency domain resource set.

[0098] In a possible implementation, when the first frequency domain resource set is switched with other frequency bands in the second frequency domain resource set, the terminal device cannot maintain data transmission on the first frequency band.

[0099] In the tenth aspect, a terminal device is provided, including: a processing module, wherein the processing module is used to determine the frequency domain resource set where the switching time is when switching from a first frequency domain resource set to a second frequency domain resource set for data transmission; wherein the first frequency domain resource set includes at least one frequency band, the second frequency domain resource set includes at least one frequency band, the first frequency domain resource set and the second frequency domain resource set both include a first frequency band, and the priority of the first frequency band is higher than the priority of other frequency bands in the first frequency domain resource set and the second frequency domain resource set; the frequency domain resource set is a frequency domain resource set in which the first frequency band has more vacant symbols in the first frequency domain resource set or the second frequency domain resource set.

[0100] In a possible implementation, the number of vacant symbols of the first frequency band in the first frequency domain resource set is the number of vacant symbols at the end of the time slot where the first frequency band is located, and the number of vacant symbols of the first frequency band in the second frequency domain resource set is the number of vacant symbols at the beginning of the time slot where the first frequency band is located.

[0101] In the eleventh aspect, a terminal device is provided, comprising: a processing module, wherein the processing module is used to determine the frequency domain resource set where the switching time is when switching from a first frequency domain resource set to a second frequency domain resource set for data transmission; wherein the first frequency domain resource set includes at least one frequency band, the second frequency domain resource set includes at least one frequency band, the first frequency domain resource set and the second frequency domain resource set both include a first frequency band, and the priority of the first frequency band is higher than the priority of other frequency bands in the first frequency domain resource set and the second frequency domain resource set; the frequency domain resource set is a frequency domain resource set in which the information carried by the first frequency band in the first frequency domain resource set or the second frequency domain resource set does not include uplink control information.

[0102] In a possible implementation manner, the uplink control information includes at least one of a hybrid automatic repeat request and channel state information.

[0103] In the twelfth aspect, a terminal device is provided, including: a processing module, the processing module is used to determine the target frequency domain resource set where the switching time is located; the switching time is the time for switching from the first frequency domain resource set to the second frequency domain resource set for data transmission; an interface module, the interface module is used to send first indication information, and the first indication information is used to indicate the target frequency domain resource set; wherein the first frequency domain resource set includes at least one frequency band, the second frequency domain resource set includes at least one frequency band, the first frequency domain resource set and the second frequency domain resource set both include a first frequency band, and the priority of the first frequency band is higher than the priority of other frequency bands in the first frequency domain resource set and the second frequency domain resource set.

[0104] In a thirteenth aspect, a network device is provided, comprising an interface module for receiving first indication information, wherein the first indication information is used to indicate a target frequency domain resource set, wherein the target frequency domain resource set is a frequency domain resource set where a terminal device switches from a first frequency domain resource set to a second frequency domain resource set for data transmission.

[0105] In a fourteenth aspect, a communication device is provided, which is used to execute the method provided in the fifth to sixth aspects. Specifically, the device may include a unit and / or module, such as a processing unit and / or a communication unit, for executing the method provided in any one of the above implementations of the fifth to sixth aspects.

[0106] In one implementation, the communication unit may be a transceiver, or an input / output interface; the processing unit may be at least one processor. Optionally, the transceiver may be a transceiver circuit. Optionally, the input / output interface may be an input / output circuit.

[0107] In another implementation, the device is a chip, a chip system or a circuit in a communication device. When the device is a chip, a chip system or a circuit used in a terminal device, the communication unit may be an input / output interface, an interface circuit, an output circuit, an input circuit, a pin or a related circuit on the chip, the chip system or the circuit; the processing unit may be at least one processor, a processing circuit or a logic circuit.

[0108] In a fifteenth aspect, a terminal device is provided, comprising: at least one processor, configured to execute a computer program or instruction stored in a memory to execute a switching method in any one of the above-mentioned implementations of the first to eighth aspects.

[0109] In the sixteenth aspect, a processor is provided for executing the methods provided in the above aspects.

[0110] In the seventeenth aspect, a computer-readable storage medium is provided, wherein the computer-readable medium stores a program code for execution by a device, wherein the program code includes a method for executing any one of the above-mentioned implementations of the first to eighth aspects.

[0111] In an eighteenth aspect, a computer program product comprising instructions is provided. When the computer program product is run on a computer, the computer executes the method provided by any one of the above-mentioned implementations of the first to eighth aspects.

[0112] In the nineteenth aspect, a chip is provided, the chip including a processor and a communication interface, the processor reads instructions stored in a memory through the communication interface, and executes the method provided by any one of the above-mentioned implementation methods of the first to eighth aspects.

[0113] Optionally, as an implementation method, the chip also includes a memory, in which a computer program or instructions are stored, and the processor is used to execute the computer program or instructions stored in the memory. When the computer program or instructions are executed, the processor is used to execute the method provided in any one of the above implementation methods.

[0114] In the twentieth aspect, a communication system is provided, which includes the terminal device in the twelfth aspect and the network device in the thirteenth aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0115] Figure 1 It is a schematic diagram of a communication system provided in an embodiment of the present application.

[0116] Figure 2 It is a schematic diagram of a frequency band where a switching time is provided in an embodiment of the present application.

[0117] Figure 3It is a schematic diagram of another frequency band where the switching time is provided in an embodiment of the present application.

[0118] Figure 4 It is a schematic diagram of another frequency band where the switching time is provided in an embodiment of the present application.

[0119] Figure 5 It is a schematic flow chart of a switching method provided in an embodiment of the present application.

[0120] Figure 6 It is a schematic diagram of another frequency band where the switching time is provided in an embodiment of the present application.

[0121] Figure 7 It is a schematic flow chart of another switching method provided in an embodiment of the present application.

[0122] Figure 8 It is a schematic flow chart of another switching method provided in an embodiment of the present application.

[0123] Fig. 9 It is a schematic flow chart of another switching method provided in an embodiment of the present application.

[0124] Fig.10 It is a schematic flow chart of another switching method provided in an embodiment of the present application.

[0125] Fig.11 It is a schematic flow chart of another switching method provided in an embodiment of the present application.

[0126] Fig.12 It is a schematic block diagram of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0127] In order to facilitate understanding of the embodiments of the present application, the following points are explained before introducing the embodiments of the present application.

[0128] First, in the embodiments of the present application, "indication" may include direct indication and indirect indication, and may also include explicit indication and implicit indication. The information indicated by a certain signal (such as the first indication information described below) is called information to be indicated. In the specific implementation process, there are many ways to indicate the information to be indicated, such as but not limited to, the information to be indicated can be directly indicated, such as the information to be indicated itself or the index of the information to be indicated. The information to be indicated can also be indirectly indicated by indicating other information, wherein the other information has an association relationship with the information to be indicated. It is also possible to indicate only a part of the information to be indicated, while the other parts of the information to be indicated are known or agreed in advance. For example, the indication of specific information can also be achieved by means of the arrangement order of each information agreed in advance (such as specified by the protocol), thereby reducing the indication overhead to a certain extent.

[0129] Second, "at least one" shown in the present application refers to one or more, and "multiple" refers to two or more. In addition, in the embodiments of the present application, "first", "second" and various digital numbers (for example, "1", "2", etc.) are only for the convenience of description, and are not used to limit the scope of the embodiments of the present application. The size of the sequence number of each process below does not mean the order of execution, and the execution order of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application, and it should be understood that the objects described in this way can be interchanged where appropriate, so that the schemes other than the embodiments of the present application can be described.

[0130] Third, the term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0131] Fourth, in the various embodiments of the present application, unless otherwise specified or provided by logic, the terms and / or descriptions between the different embodiments are consistent and can be referenced to each other, and the technical features in the different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0132] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0133] Figure 1 A schematic diagram of a communication system provided in an embodiment of the present application. Figure 1 As shown, the communication system 100 may include one or more terminal devices and one or more network devices.

[0134] The terminal device may communicate with one or more network devices. For example, the terminal device and the network device may communicate via an air interface (such as a Uu interface).

[0135] It should be understood that the terminal device can use multiple frequency bands to send data to the network device.

[0136] Exemplarily, the frequency band may be 700 MHz, 800 MHz, 900 MHz, 1.8 Gigahertz GHz, 2.1 GHz, 3.5 GHz or 4.9 GHz, etc.

[0137] The terminal device in the present application is a device with wireless transceiver functions, which may refer to user equipment (UE), access terminal, subscriber unit, user station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless communication equipment, user agent or user device. The terminal device 120 may also be a satellite phone, a cellular phone, a smart phone, a wireless data card, a wireless modem, a machine type communication device, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a customer-premises equipment (CPE), a smart point of sale (POS) machine, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a communication device carried on a high-altitude aircraft, a wearable device, a drone, a robot, a terminal in device-to-device communication (D2D), a terminal in vehicle-to-everything (V2X), a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self-driving, a remote medical device, or a wireless terminal in medical equipment. This application does not limit the wireless terminals in medical, smart grid, transportation safety, smart city, smart home, or terminal devices in communication networks evolved after 5G.

[0138] The communication device for realizing the function of the terminal device can be a terminal device, or a device that can support the terminal device to realize the function, such as a chip system. The device can be installed in the terminal device or used in combination with the terminal device. In the present application, the chip system can be composed of a chip, or it can include a chip and other discrete devices.

[0139] The network device in the present application is a device with wireless transceiver functions, which is used to communicate with the terminal device. For example, the network device can be an access network device. The access network device can be a node in the radio access network (RAN), which can be called a base station or a RAN node. It can be an evolved base station (evolved Node B, eNB or eNodeB) of long term evolution (LTE); or a base station of a 5G network such as gNodeB (gNB) or a base station in a public land mobile network (PLMN) evolved after 5G, a broadband network service gateway (BNG), an aggregation switch or a third generation partnership project (3GPP) access device, etc.

[0140] The above-mentioned RAN can be configured as a RAN defined by the 3GPP protocol, an open radio access network (O-RAN) or a cloud radio access network (C-RAN), etc. The access network device 110 can also include various forms of base stations, such as: macro base stations, micro base stations (also called small stations), relay stations, transmission points (transmitting and receiving points, TRP), transmission points (transmitting points, TP), mobile switching centers, and devices that assume the function of base stations in device-to-device (D2D), vehicle-to-everything (V2X), machine-to-machine (M2M) communications, access network devices in non-terrestrial networks (NTN), etc., without specific limitation.

[0141] The access network equipment may also include network elements or modules that implement some functions of the base station, for example, one or more of the following: a centralized unit (CU), a distributed unit (DU), or a radio unit (RU). Optionally, the CU can be further separated into a CU-control plane (CP) and a CU-user plane (UP). The functions of the CU and DU can be implemented by different network elements, or simultaneously by the baseband unit (BBU) of the base station. The function of the RU can be implemented by the radio frequency equipment of the base station. For example, the radio frequency equipment of the base station may be a remote radio unit (RRU), a pico remote radio unit (pRRU), an active antenna unit (AAU), or other units, modules or devices with radio frequency processing functions. The communication interface protocol between the BBU and the radio frequency equipment can be a common public radio interface (CPRI) interface protocol, an enhanced common public radio interface (eCPRI) interface protocol, or a fronthaul interface protocol between the DU and the RU in the O-RAN system, etc., without limitation.

[0142] In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, CU may also be called O-CU (Open CU), DU may also be called O-DU, CU-CP may also be called O-CU-CP, CU-UP may also be called O-CU-UP, and RU may also be called O-RU.

[0143] The communication device for implementing the function of the access network device may be an access network device, or may be a device capable of supporting the access network device to implement the function, such as a chip system. The device may be installed in the access network device or used in conjunction with the access network device. The chip system in the embodiment of the present application may be composed of a chip, or may include a chip and other discrete devices.

[0144] The communication system 100 can also be the following systems: long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) system, universal mobile telecommunication system (UMTS), 5G system, 6G system, intersatellite communication and satellite communication and other NTN systems. Among them, the satellite communication system includes a satellite base station and a terminal device. The satellite base station provides communication services for the terminal device. The satellite base station can also communicate with the ground base station. The satellite can be used as a base station or as a terminal device. Among them, the satellite can refer to non-ground base stations or non-ground equipment such as drones, hot air balloons, low-orbit satellites, medium-orbit satellites, and high-orbit satellites.

[0145] The communication system 100 may also be a ground cellular communication system, a high altitude platform station (HAPS) communication system, a V2X system, an integrated access and backhaul (IAB) system, and a reconfigurable intelligent surface (RIS) communication system, etc., without limitation.

[0146] It should be understood that Figure 1 This is a simplified schematic diagram for ease of understanding only. The communication system 100 may also include other devices, which are not limited in the embodiments of the present application.

[0147] With the development of communication technology, terminal equipment may support three or even more frequency bands, and can perform uplink RF chain switching on the at least three frequency bands. A frequency band may include at least one carrier. Among them, the at least three uplink carriers supported by the terminal device may be carriers in the SUL scenario. For example, there is a NUL carrier (for example, a primary uplink carrier (primary uplink carrier, primary UL carrier) or a secondary uplink carrier (secondary uplink carrier, secondary UL carrier)) and at least one SUL carrier among the at least three uplink carriers; or, there is at least one NUL carrier (for example, a primary uplink carrier or a secondary uplink carrier) and a SUL carrier among the at least three uplink carriers. Optionally, the at least three uplink carriers supported by the terminal device may also be carriers in a carrier aggregation (CA) scenario. For example, a primary component carrier (PCC) and at least one secondary component carrier (SCC), which is not limited here.

[0148] It should be noted that supporting uplink RF chain switching on at least three uplink carriers can be understood as that the RF chain between every two uplink carriers of the at least three uplink carriers can be switched. For example, if the terminal device supports uplink RF chain switching on carrier A, carrier B, and carrier C, the terminal device can perform uplink RF chain switching between carrier A and carrier B, and can perform uplink RF chain switching between carrier A and carrier C, and can perform uplink RF chain switching between carrier B and carrier C.

[0149] It should be noted that the terminal device in the present application can support three or more frequency bands (or carriers). The present application is mainly described below using switching between three or four frequency bands as an example.

[0150] It should be understood that the terminal device in the embodiment of the present application can be any of the above-mentioned devices or chips, which are not specifically limited here. Whether as a device or as a chip, the terminal device can be manufactured, sold or used as an independent product. In this embodiment and subsequent embodiments, only the terminal device is used as an example for introduction.

[0151] It should be understood that the device used to implement the function of the access network device in the embodiment of the present application may be the access network device itself, or may be a device that can support the access network device to implement the function, such as a chip system or a combination device or component that can implement the function of the access network device, and the device can be installed in the access network device. In the embodiment of the present application, the chip system may be composed of chips, or may include chips and other discrete devices. In this embodiment and subsequent embodiments, only the access network device is used as an example for introduction.

[0152] In the present application, the first frequency domain resource set corresponds to the first time unit, and the second frequency domain resource set corresponds to the second time unit. Optionally, the above-mentioned first time unit is earlier than the second time unit, and the first time unit is adjacent to the second time unit. On the frequency domain resources scheduled for information transmission, the time difference between the end position of the first time unit and the end position of the information transmission scheduled on the first time unit is a first duration, and the first duration is less than the duration of the switching time; or, on the frequency domain resources scheduled for information transmission, the time difference between the start position of the information transmission scheduled on the second time unit and the start position of the second time unit is a second duration, and the second duration is less than the duration of the switching time.

[0153] The following is an explanation of the relevant technical features involved in the embodiments of the present application. It should be noted that these explanations are intended to make the embodiments of the present application easier to understand and should not be regarded as limiting the scope of protection claimed by the present application.

[0154] 1. Uplink Tx Switch

[0155] Uplink RF chain switching refers to the terminal device switching the RF chain from one frequency band or carrier to another frequency band (or carrier) to support uplink transmission on the other frequency band (or carrier). The period of time during which the uplink RF chain switching is performed is called the uplink RF chain switching period, also known as the switching period, or the switching time, or the switching gap, etc., which is not limited here. The switching time is used for tuning or retuning the RF chain. The switching period location refers to the frequency band or carrier where the switching time is located.

[0156] It should be noted that one frequency band (carrier) may have one RF chain transmission (i.e., 1Tx or 1T), or two RF chains may be simultaneously transmitted on one frequency band (or carrier) (i.e., 2Tx or 2T). For example, one RF chain transmission on frequency band A may be represented as A 1T, and two RF chains transmission on frequency band A may be represented as A 2T.

[0157] For a terminal device, it can support up to two RF chains at the same time. The one or two RF chains can be transmitted through one port, that is, 1Tx can occur on one port, or 2Tx can also occur on one port. The specific information is determined according to the actual configuration and is not limited here.

[0158] Optionally, the duration between the start position and the end position of the switching time can be described as the duration of the switching time. For example, the duration of the switching time can be reported by the terminal device through capability information, or predefined by the protocol, or preconfigured, or indicated to the terminal device by the access network device, or indicated to the terminal device by the access network device based on the capability information of the terminal device, without limitation. Generally speaking, different frequency band pairs can correspond to different durations of the switching time.

[0159] Exemplarily, taking the switching time occupying 4 symbols as an example, the duration of the corresponding switching time is 140us, and the subcarrier spacing of the frequency domain resource is 30KHz. Optionally, the duration of the switching time can also be any value among 35us, 210us, or 280us. Optionally, the duration of the switching time is not limited to the values ​​listed above, and it can also be other values, which are not limited here.

[0160] 2. Carrier Aggregation (CA)

[0161] CA is the aggregation of at least two component carriers (CC) (also known as carrier units) to support a larger transmission bandwidth. Among them, the cell corresponding to the PCC is the primary cell (Pcell), which is the cell where the terminal device establishes the initial connection; or, the cell where the radio resource control (RRC) connection is reestablished; or, the cell specified during the handover process. The primary cell is responsible for RRC communication with the terminal pole equipment. The cell corresponding to the SCC is the secondary cell (Scell), which is added / modified / released during RRC connection reconfiguration to provide additional wireless resources.

[0162] 3. Transmitter (TX)

[0163] TX is a physical concept, which can also be called a radio frequency (RF) transmission channel or a radio frequency chain (RF Chain) or a transmission chain, etc. In the present application, the transmission channel can work in the following manner, but is not limited to the following manner: the transmission channel can receive a baseband signal from a baseband chip, perform RF processing (such as up-conversion, amplification and filtering) on ​​the baseband signal to obtain a radio frequency signal, and finally radiate the radio frequency signal into space through an antenna. Specifically, the transmission channel may include an antenna switch, an antenna tuner, a low noise amplifier (LNA), a power amplifier (PA), a mixer, a local oscillator (LO), a filter and other electronic devices, which can be integrated into one or more chips as needed. The antenna can sometimes also be considered as part of the transmission channel. In this application, it is referred to as a radio frequency chain. Optionally, the RF chain in this application can also be replaced by Tx, T, antenna, RF, transmit channel, transmit port, number of RF chains, number of transmission layers, maximum number of transmission layers, maximum number of transmission layers supported, receive channel, or any combination thereof. Optionally, the RF chain switching in this application can be replaced by uplink RF chain switching or dynamic uplink RF chain switching.

[0164] 4. Band

[0165] The frequency band originally refers to the frequency range of electromagnetic waves. In the field of communications, it refers to the frequency band of electromagnetic waves that can be used for communication. Generally, a frequency band includes one or more carriers. In this application, the terminal device reports one or more frequency bands to the access network device, and the access network device selects one or more carriers from the aforementioned one or more frequency bands and configures them to the terminal device. The terminal device uses the carrier configured by the aforementioned access network device to communicate.

[0166] 5. Band pair

[0167] A band pair refers to a combination of two bands that can perform RF chain switching. Generally, a band pair contains two bands, which means that the two bands can perform uplink RF chain switching. For example, the band pair is {A, B}, which means that the band pair contains two bands, band A and band B, and band A and band B can perform uplink RF chain switching. In other words, the uplink RF chain on band A can be switched to band B, and the uplink RF chain on band B can be switched to band A.

[0168] 6. Associated band

[0169] Associated frequency bands are used to resolve transmission ambiguity. When two RF chains are currently located in band A and band B, respectively, and the next transmission is a 1-port transmission on band C, if the RRC signaling uplinkTxSwitching-DualUL-TxState indicates 1T, then one of the RF chains will be switched to band C. In this case, since it is unclear whether the RF chain of band A or band B is switched, the 3gpp standard defines associated frequency bands. That is, for any frequency band, its associated frequency band is configured through RRC signaling. When scheduling a 1-port transmission on this frequency band, if the RRC signaling uplinkTxSwitching-DualUL-TxState indicates 1T, then in addition to the 1-port transmission on this frequency band, there is also 1T on its associated frequency band.

[0170] For three bands, four bands or more, each band (i.e., transmission band) in the switching has its corresponding associated band. Except when one RF chain is on the transmission band, the other RF chain is always on the corresponding associated band. In other words, when the switching involves switching from 2T to 1T, the associated band needs to be derived to determine the frequency domain resource pair.

[0171] For example, taking band A, band B, band C and band D as examples, the associated band of each transmission band can be configured as band A's associated band is band B, band B's associated band is band A, band C's associated band is band A, and band D's associated band is band C. For example, when 1port transmission of band C is scheduled, if the RF chain is 1T each on band A and band B in the previous time slot, since band A is the associated band of band C, the RF chain on band B is switched to band C, while that on band A remains unchanged, so that the RF chain is 1T each on band C and A in the current slot. For another example, when 1port transmission of band D is scheduled, if the RF chain is 1T each on band A and B1T in the previous slot, and since band C is the associated band of band D, the RF chain on band A is switched to band D, and the one on band B is switched to band C, or the RF chain on band B is switched to band D, and the one on band A is switched to band C, so that the RF chain in the current time slot is 1T each on band C and band D. The above definition of associated bands is based on the assumption that simultaneous transmission on two bands can be supported by the terminal device.

[0172] It can be understood that in the following application, frequency band A can be referred to as A, frequency band B can be referred to as B, frequency band C can be referred to as C, and frequency band D can be referred to as D.

[0173] It should be understood that in the present application, being scheduled for information transmission, not being scheduled for information transmission, or the existence of information transmission that is not scheduled is for a time unit, for example, for a time slot.

[0174] In the present application, a time unit can be understood as a subframe, a slot, a mini-subframe, a mini-slot, a sub-slot, or a symbol (symbol / OFDM symbol), etc. As an example, the present application mainly takes a time unit as a slot as an example for explanation.

[0175] In the embodiment of the present application, "switching from... to..." can be understood as: "at the switching time, switching from... to..." can also be understood as: "the switching time is used to switch from... to..." In the embodiment of the present application, "at the switching time" can also be understood as "within the switching time", or "at the switching time", or "through / through the switching time".

[0176] The description of "group" or "combination" in the embodiments of the present application can be understood as "pair". For example, the descriptions of "frequency domain resource set", "frequency domain resource group" and "frequency domain resource pair" can be interchangeable. It should be noted that the frequency domain resources involved in the embodiments of the present application can be understood as frequency bands or carriers, or a combination of frequency bands and carriers.

[0177] In addition, in an embodiment of the present application, switch from means before switching / switching from, for example, the frequency domain resource before switching means switching from the frequency domain resource or switching from the frequency domain resource. Switch to means after switching / switching to, for example, the frequency domain resource after switching means switching to the frequency domain resource or switching to the frequency domain resource. Correspondingly, switch from band / CC means band / CC before switching or switching from band / CC, and switch to band / CC means band / CC after switching or switching to band / CC. A frequency domain resource group or a frequency domain resource pair includes a switch from band / CC and a switch to band / CC.

[0178] Currently, the network device can instruct the terminal device to send uplink data. For example, the network device can instruct the terminal device to send uplink data on a frequency band through downlink control information. In some cases, the terminal device may need to switch the frequency band to be used due to changes in the channel state or load conditions on the frequency band.

[0179] In the process of switching from one frequency band to another, switching time is required. During the switching time, the terminal device cannot continue to transmit information on the frequency band. During the switching time, the terminal device adjusts or readjusts the RF chain. During the switching time, the terminal device interrupts information transmission. Therefore, it is very important to let the terminal device know which frequency band the switching time is in.

[0180] In the present application, data transmission can be understood as information transmission. The information can include at least one of control information, data information or reference signal. The information transmission can be uplink information transmission or downlink information transmission.

[0181] In the current solution, the network equipment can configure the priority of the frequency bands supporting three-band switching or four-band switching, so that the terminal equipment can determine in which frequency band the switching time is located according to the priority of the frequency band before or after the switching.

[0182] For example, the terminal device currently uses frequency band A to transmit data to the network device, and the next transmission needs to switch from frequency band A to frequency band B, and the priority of frequency band A is greater than the priority of frequency band B. The terminal device can select the switching time on frequency band B with a lower priority, so that the data transmission in frequency band A with a high priority can be ensured to be unaffected during the switching process. Unaffected means that the information transmission is not interrupted, or the time for adjusting or re-adjusting the RF chain is not in this frequency band.

[0183] It should be noted that when switching between two frequency bands, the access network device can indicate which frequency band the switching time should be placed on by configuring the index (CC index), that is, indicating the location of the switching time (switching period location). With the development of communication technology, terminal devices may support three or more uplink carriers, so there may be switching between three or more frequency bands. When it comes to switching between three or more frequency bands, the method of indicating the location of the switching time by configuring the index is no longer applicable. A new solution is needed to determine which frequency band the switching time location is located on to improve the reliability of communication.

[0184] In some implementations, when switching between three or more frequency bands, a criterion 1 is proposed for which frequency band or carrier the switching time should be located on: for all frequency bands involved in a switching, the terminal device determines the location of the switching time as a switching-from band (s) or a switching-to band (s) that is not where the highest priority band is located. That is, the UE determines the switching period location on either switching-from band (s) or switching-to band (s) that is involved in the UL Tx switching and is not with the highest priority band. The priority is configured by the network device to the terminal device through RRC signaling. Although the above method of determining the highest priority band from all frequency bands involved in a switching and using the switching-from band or the switching-to band where the highest priority band is not located as the location of the switching time is simple, it may result in the inability to determine the highest priority band in some specific switching scenarios. Furthermore, regarding which frequency band or carrier the switching time should be located on, a criterion 2 is proposed: for all frequency bands involved in a switching, the terminal device determines the location of the switching time in a frequency band set as a pre-switching frequency band or a post-switching frequency band that is not the highest priority frequency band. Each frequency band in the frequency band set satisfies: (for switched UL) is contained in either switching-from band(s) or switching-to band(s) (not both) with actual transmission; (for dual UL) is contained in either switching-from band(s) or switching-to band(s) (not both) with or without actual transmission. Criterion 2 improves Criterion 1, but in some cases, it will lead to reduced spectrum efficiency.

[0185] When switching between multiple frequency bands is involved, the existing solutions may not be able to actually determine which frequency band the switching time is in according to the priority of the frequency bands. That is, it cannot guarantee that the frequency band with the highest priority is protected.

[0186] For example, Figure 2 Schematic diagram of a frequency band where a switching time is provided in an embodiment of the present application. Figure 2 As shown, assuming that for band pair 1: switching from band A to band B (A->B); for band pair 2: switching from band C to band D (C->D), the priority of each band is: band A>band B>band D>band C, or band A>band D>band B>band C.

[0187] It should be understood that in this case, the terminal device has the transmission capability of two RF chains, one RF chain 1 corresponds to frequency band A, and the other RF chain 2 corresponds to frequency band C. The terminal device can send uplink data on frequency band A and frequency band C through the two RF chains. Correspondingly, in the next time unit, the terminal device can send uplink data on frequency band B and frequency band D through the two RF chains.

[0188] In this application, data can also be understood as information. Corresponding to can also be understood as being placed in.

[0189] According to the current solution, the terminal device determines the band with the highest priority in band pair 1 and band pair 2, that is, band A. For band pair 1, the terminal device selects band B as the switching time, that is, the switching time is in the band after switching. For some terminal devices that do not have advanced RF chain transmission capabilities, their two RF chains cannot work independently. Therefore, when RF chain 1 switches from band A to band B, RF chain 2 cannot continue to work. Therefore, for another band pair 2, the terminal device also places the switching time in the band after switching, that is, determines that the switching time is in band D to ensure the uniformity of the switching time.

[0190] In this case, the switching time is located on the side where the frequency band after switching is located. For frequency band pair 2, the priority of frequency band D is higher than the priority of frequency band C, but the switching time is located in frequency band D, which affects the data transmission in frequency band D with higher priority.

[0191] In some cases, when the two transmission chains of the terminal device correspond to frequency band A and frequency band C respectively, and the network device schedules 1 port transmission on frequency band B, if the network device instructs to switch one of the radio frequency chains, the terminal device will not be able to clearly know whether to switch the radio frequency chain in frequency band A to frequency band B, or to switch the radio frequency chain in frequency band C to frequency band B. The network device scheduling can be through DCI scheduling or other semi-static scheduling.

[0192] Therefore, the existing solution also introduces associated frequency bands. For any frequency band, the network device can configure an associated frequency band for it. For example, for the above-mentioned frequency band B, the network device can configure an associated frequency band D (band D for band B) for it. If frequency band B is scheduled, one RF chain of the terminal device switches to the frequency band B, and the other RF chain switches to the associated frequency band D of frequency band B. That is, the terminal device can switch the RF chain on frequency band A to frequency band B, and switch the RF chain in frequency band C to frequency band D, or the terminal device switches the RF chain on frequency band C to frequency band B, and switches the RF chain on frequency band A to frequency band D.

[0193] It is understandable that, although a radio frequency chain corresponds to the associated frequency band D, there is no actual data transmission on the frequency band. It can also be understood that there is no actual data transmission on the associated frequency band D. In the present application, actual data transmission can also be understood as actual transmission, or actual information transmission. That is, the frequency band is not actually scheduled for information transmission, or there is no information transmission in the frequency band. The above are all for the current time unit. The time unit includes at least one of a time slot, a subframe, a mini time slot, a mini subframe or a symbol.

[0194] As an example only, the switching time lengths on frequency band B and frequency band D may be different, and the present invention is not limited thereto.

[0195] For scenarios involving switching of multiple frequency bands, when there are associated frequency bands, according to the existing technical solution of determining the frequency band in which the switching time is located based on the priority of the frequency bands, if the associated frequency band has the highest priority, the switching time will be located on the other side of the associated frequency band, which may affect the data transmission of the frequency band that actually transmits data.

[0196] For example, Figure 3 FIG. 1 is a schematic diagram of another frequency band where the switching time is provided in an embodiment of the present application. Figure 3 As shown, assuming that the two RF chains of the terminal device currently correspond to band A and band C respectively, and the network device schedules 1-port (1port) transmission on band B, if the network device instructs to switch one of the RF chains, for example, the uplinkTxSwitching-DualUL-TxState in the RRC signaling of the network device indicates 1T, the terminal device can switch the RF chain in band A to band B, and switch the RF chain in band C to band D associated with band B.

[0197] Among them, the priority of each frequency band involved in the switching is: band D>band A>band C>band B, or band D>band C>band A>band B.

[0198] According to the existing technical solution of determining the switching time according to the priority, since the priority of band D is the highest and band D is the band after switching, the switching time is placed in the band before switching, that is, band C. Therefore, the switching time is located in the band before switching, that is, the switching time is located in band A and band C. In this case, even though the priority of band A is higher than that of band B, the switching time is located in band A, and the data transmission in band A will be interrupted during the switching time; in addition, since band D is an associated band and no data is actually transmitted on it, the switching time is still located in band C where data is actually transmitted, and the data transmission in band A will be interrupted during the switching time. Therefore, according to the existing technical solution, the data transmission in the band with higher priority will be interrupted, thereby reducing its spectrum utilization efficiency.

[0199] It should be understood that the frequency band A and the frequency band C before the switching can be collectively referred to as the frequency domain resource set 1, and the frequency band B and the frequency band D after the switching can be collectively referred to as the frequency domain resource set 2.

[0200] In some cases, when switching between multiple frequency bands is involved, the terminal devices may have a common frequency band before and after the switching.

[0201] For example, Figure 4 FIG. 1 is a schematic diagram of another frequency band where the switching time is provided in an embodiment of the present application. Figure 4 As shown, the switching scenario involved is that, assuming that the two RF chains of the terminal device currently correspond to band A and band C respectively, and the network device schedules 1-port transmission on band B, the associated band of band B is band A. If the network device indicates to switch one of the RF chains, for example, uplinkTxSwitching-DualUL-TxState in the RRC signaling of the network device indicates 1T, the terminal device can switch the RF chain on band A to band B, and switch the RF chain on band C to the associated band A of band B. Optionally, the terminal device can also switch the RF chain on band B to band C, and keep the RF chain on band A unchanged.

[0202] Among them, the priorities of the frequency bands involved in the switching are: Band A>Band B>Band C.

[0203] Since band A is in both the pre-switching band and the post-switching band. According to the existing technical solution for determining the switching time according to the priority, since band A has the highest priority, the switching time is determined from the remaining bands B and C. Band B has a higher priority than band C, so the switching time is determined to be in band C with a lower priority, and band C is in the pre-switching band, so the switching time is uniformly determined to be in the pre-switching band, that is, the switching time is in band A and band C of the pre-switching band.

[0204] Similarly, band A located in the frequency band after the switching is an associated frequency band of band B, on which data is not actually transmitted. Band A located in the frequency band before the switching actually transmits data, but the switching time is in the frequency band before the switching, which will cause the data transmission of band A in the frequency band before the switching where data is actually transmitted to be interrupted, thereby reducing its spectrum utilization efficiency.

[0205] Above, combined Figure 2-Figure 4 The existing technical solutions introduced will reduce the spectrum utilization efficiency of the terminal device. Therefore, the embodiment of the present application provides a switching method and a terminal device, which can enable the terminal device to clearly know the frequency band where the switching time is located and improve the spectrum utilization efficiency of the terminal device.

[0206] The following will combine Figures 5 to 11 Introduce the technical solution of this application.

[0207] For example, Figure 5 is a schematic flow chart of a switching method provided in an embodiment of the present application. Figure 5 As shown, the switching method 200 can be applied to a terminal device, and the switching method 200 can at least include step 210.

[0208] 210. When a terminal device switches from a first frequency domain resource set to a second frequency domain resource set for data transmission, a frequency domain resource set where a switching time is located is determined.

[0209] Among them, the first frequency domain resource set includes at least one frequency band, the second frequency domain resource set includes at least one frequency band, the first frequency domain resource set and the second frequency domain resource set both include the first frequency band, and the priority of the first frequency band is higher than the priority of other frequency bands in the first frequency domain resource set and the second frequency domain resource set.

[0210] The frequency domain resource set is a frequency domain resource set where the first frequency band without information transmission is located.

[0211] It should be understood that the frequency domain resource set is the frequency domain resource set where the switching time is located. This description is applicable to other embodiments of the present application regarding the frequency domain resource set.

[0212] The first frequency domain resource set may include at least one frequency band, which may be understood as the first frequency domain resource set including one or more frequency bands, and the first frequency domain resource set may correspond to the frequency band before switching or before switching. The second frequency domain resource set may include at least one frequency band, which may be understood as the second frequency domain resource set including one or more frequency bands, and the second frequency domain resource set may correspond to the frequency band after switching or after switching. In the present application, corresponding to may also be understood as "belonging to" or "for".

[0213] It should be understood that the first frequency domain resource set includes at least one frequency band, and it can also be understood that the first frequency domain resource set includes at least one frequency domain resource. The second frequency domain resource set includes at least one frequency band, and it can also be understood that the second frequency domain resource set includes at least one frequency domain resource. In the present application, the frequency domain resource can be a frequency band or a carrier. In the embodiment description, taking the frequency band as an example, the frequency band can also be understood as a carrier in the frequency band or multiple carriers in the frequency band. Among them, the multiple carriers can be multiple carriers aggregated by continuous carriers. In the present application, the highest priority can also be understood as a higher priority; the lowest priority can also be understood as a lower priority.

[0214] The switching time may be understood as the time it takes for the terminal device to switch from the first frequency domain resource set to the second frequency domain resource set for data transmission. During the switching time, the terminal device will interrupt data transmission.

[0215] In some examples, the first frequency band without information transmission can be understood as a first frequency band without data transmission, or a first frequency band without uplink data transmission.

[0216] In some examples, the frequency domain resource set where the switching time is located is one of the first frequency domain resource set or the second frequency domain resource set.

[0217] For example, the first frequency band in the first frequency domain resource set has no information transmission, and the first frequency band in the second frequency domain resource set has information transmission. The frequency domain resource set where the first frequency band without information transmission is located is the first frequency domain resource set, and the frequency domain resource set where the switching time is located is the first frequency domain resource set.

[0218] Alternatively, the first frequency band in the first frequency domain resource set has information transmission, and the first frequency band in the second frequency domain resource set does not have information transmission. The frequency domain resource set where the first frequency band without information transmission is located is the second frequency domain resource set, and the frequency domain resource set where the switching time is located is the second frequency domain resource set.

[0219] The frequency domain resource set where the first frequency band without information transmission is located is the first frequency domain resource set, which can also be described as the first frequency band without information transmission before switching or the first frequency band before switching has no information transmission. The frequency domain resource set where the first frequency band without information transmission is located is the second frequency domain resource set, which can also be described as the first frequency band without information transmission after switching or the first frequency band after switching has no information transmission. In the present application, the frequency band before switching refers to the frequency band before switching; the frequency band after switching refers to the frequency band after switching. The first frequency domain resource set belongs to / is the frequency domain resource set before switching, and the second frequency domain resource set belongs to / is the frequency domain resource set after switching.

[0220] As an example, the first frequency band without information transmission can be understood as an associated frequency band of other frequency bands. For example, in the second frequency domain resource set, the first frequency band is an associated frequency band of another frequency band, and the first frequency band in the second frequency domain resource set can be considered as the first frequency band without information transmission.

[0221] As another example, the first frequency band without information transmission may also be understood as a frequency band without any data transmission.

[0222] In other examples, the first frequency band without information transmission can also be understood as a frequency band with less information transmission. For example, if the amount of data transmitted on the first frequency band in the first frequency domain resource set is less than the amount of data transmitted on the first frequency band in the second frequency domain resource set, the first frequency band in the first frequency domain resource set can be considered as the first frequency band without information transmission.

[0223] The priority of the first frequency band is higher than the priorities of other frequency bands in the first frequency domain resource set and the second frequency domain resource set, that is, among the frequency bands included in the first frequency domain resource set and the second frequency domain resource set, the priority of the first frequency band is the highest.

[0224] Based on the embodiment of the present application, when both the first frequency domain resource set and the second frequency domain resource set include the first frequency band, and the priority of the first frequency band is higher than the priority of other frequency bands in the first frequency domain resource set and the second frequency domain resource set, when the terminal device switches from the first frequency domain resource set to the second frequency domain resource set for data transmission, it is determined that the frequency domain resource set where the switching time is located is the frequency domain resource set where the first frequency band without information transmission is located. Therefore, the switching time is located in the frequency domain resource set without information transmission, so that the terminal device will not interrupt the data transmission of the first frequency band with actual information transmission, avoiding the problem of reducing the spectrum utilization efficiency caused by the switching time being located in the first frequency band with actual information transmission.

[0225] For example, see Figure 6 , Figure 6 It is a schematic diagram of another set of frequency bands where switching times are provided in an embodiment of the present application.

[0226] like Figure 6 As shown, the first frequency domain resource set may include frequency band A and frequency band C, and the second frequency domain resource set may include frequency band B and frequency band A. Both the first frequency domain resource set and the second frequency domain resource set include the first frequency band (frequency band A), and the priority of frequency band A is higher than the priority of frequency band B and the priority of frequency band C.

[0227] In some examples, frequency band A in the second frequency domain resource set may be an associated frequency band of frequency band B, and therefore, frequency band A in the second frequency domain resource set does not have information transmission. Then, when the terminal device switches from the first frequency domain resource set to the second frequency domain resource set for data transmission, it is determined that the frequency domain resource set where the switching time is located is the frequency domain resource set where the first frequency band that does not have information transmission is located, that is, the switching time is located in the second frequency domain resource set.

[0228] In this way, for the first frequency band in the first frequency domain resource set, on which information is transmitted, during the switching process, the information transmission of the first frequency band in the first frequency domain resource set may not be affected. Compared with the existing technical solutions, the technical solution of the present application can improve the spectrum utilization efficiency of the terminal device.

[0229] Of course, the first frequency domain resource set may include frequency band B and frequency band A, and the second frequency domain resource set may include frequency band A and frequency band C. Among them, frequency band A in the first frequency domain resource set is not actually scheduled for data transmission. That is, frequency band A is an associated frequency band of frequency band B. Frequency band A and frequency band C in the second frequency domain resource set are scheduled for data transmission. Both the first frequency domain resource set and the second frequency domain resource set include the first frequency band (frequency band A), and the priority of frequency band A is higher than the priority of frequency band B and the priority of frequency band C. Then, when the terminal device switches from the first frequency domain resource set to the second frequency domain resource set for data transmission, it is determined that the frequency domain resource set where the switching time is located is the frequency domain resource set where the first frequency band without information transmission is located, that is, the switching time is located in the first frequency domain resource set.

[0230] In some implementations, the terminal device determines a set of frequency domain resources where the switching time is located, which can also be understood as the terminal device determining the frequency domain resources where the switching time is located.

[0231] In this case, the frequency domain resource set is the frequency domain resource set where the first frequency band without information transmission is located. It can also be understood that the frequency domain resource where the switching time is located is located in the frequency domain resource set where the first frequency band without information transmission is located.

[0232] Alternatively, the frequency domain resource set is a frequency domain resource set where the first frequency band without information transmission is located. It can also be understood that the frequency domain resource where the switching time is located is located in the pre-switching frequency band or the post-switching frequency band where the first frequency band without information transmission is located.

[0233] The frequency band before switching or the frequency band after switching can be one frequency band or multiple frequency bands, which is not limited in the embodiment of the present application. In the present application, the frequency band before switching can refer to all or part of the frequency bands on this side before switching. The frequency band after switching can refer to all or part of the frequency bands on this side after switching.

[0234] In some cases, when the first frequency bands in the first frequency domain resource set and the second frequency domain resource set have no information transmission, when the terminal device switches from the first frequency domain resource set to the second frequency domain resource set for data transmission, the terminal device determines that the frequency domain resource at the switching time is the first frequency domain resource set or the second frequency domain resource set where the second frequency band is not located, and the priority of the second frequency band is the second highest priority. That is, the priority of the second frequency band is only lower than the priority of the first frequency band.

[0235] In some cases, when both the first frequency bands in the first frequency domain resource set and the second frequency domain resource set have information transmission, when the terminal device switches from the first frequency domain resource set to the second frequency domain resource set for data transmission, the terminal device determines that the frequency domain resource where the switching time is located is the first frequency domain resource set or the second frequency domain resource set where the second frequency band is not located, and the priority of the second frequency band is the second highest priority. That is, the priority of the second frequency band is only lower than the priority of the first frequency band.

[0236] Among them, the first frequency domain resource set or the second frequency domain resource set where the second frequency band is not located can be understood as: when the second frequency band is located in the first frequency domain resource set, the terminal device determines that the frequency domain resource where the switching time is located is the second frequency domain resource set; when the second frequency band is located in the second frequency domain resource set, the terminal device determines that the frequency domain resource where the switching time is located is the first frequency domain resource set. Among them, the terminal device determines that the frequency domain resource where the switching time is located is the second frequency domain resource set, that is, the pre-switching frequency band or the post-switching frequency band where the second frequency domain resource set is located. The terminal device determines that the frequency domain resource where the switching time is located is the first frequency domain resource set, that is, the pre-switching frequency band or the post-switching frequency band where the first frequency domain resource set is located. For example, when the second frequency band is located in the first frequency domain resource set (or the pre-switching frequency band), the terminal device determines that the switching time is located in the second frequency domain resource set (or the post-switching frequency band). Or, when the second frequency band is located in the second frequency domain resource set (or the post-switching frequency band), the terminal device determines that the switching time is located in the first frequency domain resource set (or the pre-switching frequency band).

[0237] The terminal device determines that the frequency domain resources where the switching time is located are the first frequency domain resource set or the second frequency domain resource set that is not located in the second frequency band. It can also be understood that the terminal device determines that the frequency domain resources where the switching time is located are the pre-switching frequency band or the post-switching frequency band that is not located in the second frequency band.

[0238] The first frequency bands in the first frequency domain resource set and the second frequency domain resource set have no information transmission, which can also be understood as the first frequency band has no information transmission before or after switching.

[0239] Based on the embodiment of the present application, when the first frequency band with the highest priority has no information transmission before and after the switching, the terminal device can determine the corresponding switching time based on the second frequency band with the second highest priority, so as to facilitate the terminal device to clearly know the frequency band where the switching time is located. In the present application, the second frequency band with the second highest priority, that is, the priority of the second frequency band is only lower than the priority of the first frequency band. Among all the frequency bands involved in the first frequency domain resource set and the second frequency domain resource set in the switching, the priority of the first frequency band is the highest.

[0240] In some embodiments, the method 200 further includes:

[0241] The terminal device determines that the priority of the first frequency band without information transmission in the first frequency domain resource set and the second frequency domain resource set is lower than the priority of the first frequency band with information transmission.

[0242] As an example, the first frequency band in the first frequency domain resource set has information transmission, and the first frequency band in the second frequency domain resource set does not have information transmission, then the terminal device determines that the priority of the first frequency band in the second frequency domain resource set is lower than the priority of the first frequency band in the first frequency domain resource set.

[0243] The terminal device determines that the priority of the first frequency band without information transmission in the first frequency domain resource set and the second frequency domain resource set is lower than the priority of the first frequency band with information transmission. It can also be understood that the terminal device determines that the priority of the first frequency band with information transmission in the first frequency domain resource set and the second frequency domain resource set is higher than the priority of the first frequency band without information transmission.

[0244] Based on the embodiment of the present application, when the frequency band before switching or the frequency band after switching both include the first frequency band, the terminal device can determine that the priority of the first frequency band without information transmission is lower than the priority of the first frequency band with information transmission, so that the switching time can be determined to be in the frequency band before switching or the frequency band after switching where the first frequency band with low priority is located.

[0245] In some implementations, the priority of the first frequency band without information transmission in the first frequency domain resource set and the second frequency domain resource set is lower than the priority of the first frequency band with information transmission. Alternatively, the priority of the first frequency band with information transmission in the first frequency domain resource set and the second frequency domain resource set is higher than the priority of the first frequency band without information transmission.

[0246] As an example, the first frequency band in the first frequency domain resource set has information transmission, and the first frequency band in the second frequency domain resource set does not have information transmission, then the priority of the first frequency band in the first frequency domain resource set is higher than the priority of the first frequency band in the second frequency domain resource set.

[0247] In some implementations, the terminal device supports dual UL or concurrent UL in a frequency band of at least one of the first frequency domain resource set and the second frequency domain resource set; or,

[0248] The terminal device can perform concurrent uplink on the frequency band of at least one of the first frequency domain resource set and the second frequency domain resource set.

[0249] It can be understood that concurrent uplink can be understood as that the terminal device can concurrently transmit uplink data in the same time unit on two frequency bands.

[0250] The terminal device supports concurrent uplink in the frequency band of at least one of the first frequency domain resource set and the second frequency domain resource set. It can also be understood that the terminal device can support concurrent uplink in the frequency band of the first frequency domain resource set and / or the second frequency domain resource set.

[0251] In this way, terminal devices can work simultaneously on multiple frequency bands, thereby avoiding transmission congestion and reducing data transmission delays.

[0252] In some implementations, when the first frequency domain resource set is switched with other frequency bands in the second frequency domain resource set, the terminal device cannot maintain data transmission on the first frequency band.

[0253] When the first frequency domain resource set is switched with other frequency bands in the second frequency domain resource set, the terminal device cannot maintain data transmission on the first frequency band, which can be understood as the inability to continue to transmit data on the first frequency band during the switching of other frequency bands. Alternatively, the switching of the RF chain on the first frequency band will be affected by the switching of other RF chains, and the RF chain on the first frequency band cannot continue to work during the switching of other RF chains.

[0254] In an embodiment of the present application, the terminal device cannot maintain data transmission on the first frequency band, that is, the terminal device has the ability to transmit on the second RF chain. That is: the ability to transmit non-independently of RF chains with different frequency domain resource pairs, or, not having advanced capabilities (that is, UE does not indicates True in the capability[tx-on-non-affected-band]), or, not having advanced RF chain transmission capabilities. The meaning of non-independent transmission of RF chains is that the transmission of one RF chain is affected by the switching of another RF chain. That is, when the other RF chain is switching, the RF chain cannot transmit and information transmission will be interrupted. In other words, the two RF chains cannot work independently and need to be affected by each other. For example, during the switching of one RF chain 1, the other RF chain 2 cannot transmit, that is, it is necessary to wait until RF chain 1 is switched before RF chain 2 can transmit.

[0255] In an embodiment of the present application, the terminal device cannot maintain data transmission on the first frequency band, that is, the terminal device has the first RF chain transmission capability. That is: the ability to independently transmit RF chains with different frequency domain resource pairs, or, having advanced capabilities (that is, UE indicates true in the capability [tx-on-non-affected-band]), or, having advanced RF chain transmission capabilities. Independent transmission of the RF chain means that the transmission of one RF chain is not affected by the switching of another RF chain. That is, when the other RF chain is switching, the one RF chain can still transmit. For example, during the switching of one RF chain 1, the other RF chain 2 can also transmit.

[0256] The present application also provides a switching method, which can be applied to a terminal device. The method may include:

[0257] When switching from a first frequency domain resource set to a second frequency domain resource set for data transmission, determining a frequency domain resource set where a switching time is located;

[0258] The first frequency domain resource set includes at least one frequency band, the second frequency domain resource set includes at least one frequency band, the first frequency domain resource set and the second frequency domain resource set both include the first frequency band, and the priority of the first frequency band is higher than the priority of other frequency bands in the first frequency domain resource set and the second frequency domain resource set;

[0259] When the first frequency bands in the first frequency domain resource set and the second frequency domain resource set have no information transmission, the terminal device determines that the frequency domain resource set where the switching time is located is the first frequency domain resource set or the second frequency domain resource set where the second frequency band is not located, and the priority of the second frequency band is the second highest priority.

[0260] Alternatively, when the first frequency bands in the first frequency domain resource set and the second frequency domain resource set both have information transmission, the terminal device determines that the frequency domain resource where the switching time is located is the first frequency domain resource set or the second frequency domain resource set where the second frequency band is not located, and the priority of the second frequency band is the second highest priority.

[0261] It should be understood that the priority of the second frequency band is the second highest priority, that is, the priority of the second frequency band is only lower than the priority of the first frequency band.

[0262] Among them, the first frequency domain resource set or the second frequency domain resource set where the second frequency band is not located can be understood as: when the second frequency band is located in the first frequency domain resource set, the terminal device determines that the frequency domain resource where the switching time is located is the second frequency domain resource set; when the second frequency band is located in the second frequency domain resource set, the terminal device determines that the frequency domain resource where the switching time is located is the first frequency domain resource set. Among them, the terminal device determines that the frequency domain resource where the switching time is located is the second frequency domain resource set, that is, the pre-switching frequency band or the post-switching frequency band where the second frequency domain resource set is located. The terminal device determines that the frequency domain resource where the switching time is located is the first frequency domain resource set, that is, the pre-switching frequency band or the post-switching frequency band where the first frequency domain resource set is located.

[0263] In this case, considering the priorities of other frequency bands except the first frequency band, the frequency band before switching or the frequency band after switching where the frequency band with the highest priority among other frequency bands except the first frequency band is located is selected as the side to be protected. The frequency band before switching or the frequency band after switching where the frequency band with the lowest priority among other frequency bands except the first frequency band is located is determined as the frequency domain resource where the switching interval is located.

[0264] In the present application, the frequency domain resource where the switching interval is located can also be understood as the frequency domain resource where the switching interval is located, or the frequency domain position where the switching interval is located.

[0265] Based on the embodiments of the present application, when the first frequency band with the highest priority has no information transmission before and after switching or has information transmission, the terminal device can determine the corresponding switching time based on the second frequency band with the second highest priority, which is conducive to the terminal device to clearly identify the frequency band where the switching time is located.

[0266] For example, Figure 7 FIG. 1 is a schematic flow chart of another switching method provided in an embodiment of the present application. Figure 7 As shown, the switching method 300 can be applied to a terminal device, and the switching method 300 can at least include step 310.

[0267] 310. When a terminal device switches from a first frequency domain resource set to a second frequency domain resource set for data transmission, a frequency domain resource set where a switching time is located is determined.

[0268] Among them, the first frequency domain resource set includes at least one frequency band, the second frequency domain resource set includes at least one frequency band, the first frequency domain resource set and the second frequency domain resource set both include the first frequency band, and the priority of the first frequency band is higher than the priority of other frequency bands in the first frequency domain resource set and the second frequency domain resource set.

[0269] The frequency domain resource set is a frequency domain resource set having more vacant symbols in the first frequency band in the first frequency domain resource set or the second frequency domain resource set.

[0270] It should be understood that the frequency domain resource set is a frequency domain resource set where the switching time is located.

[0271] It should be understood that reference may be made to the relevant description in the foregoing text regarding the first frequency domain resource set and the second frequency domain resource set.

[0272] The vacant symbol in the present application can be understood as a symbol without data transmission. It should be understood that the data transmission in the present application can also be understood as information transmission or scheduled transmission, etc. Among them, the transmission can be uplink transmission or downlink transmission. The information transmission can include at least one of control information transmission, data information transmission, or signal transmission.

[0273] Exemplarily, when the number of vacant symbols of the first frequency band in the first frequency domain resource set is greater than the number of vacant symbols of the first frequency band in the second frequency domain resource set, the frequency domain resource set where the switching time is located is the first frequency domain resource set.

[0274] Alternatively, when the number of vacant symbols of the first frequency band in the second frequency domain resource set is greater than the number of vacant symbols of the first frequency band in the first frequency domain resource set, the frequency domain resource set where the switching time is located is the second frequency domain resource set.

[0275] Based on the embodiment of the present application, when both the first frequency domain resource set and the second frequency domain resource set include the first frequency band, and the priority of the first frequency band is higher than the priority of other frequency bands in the first frequency domain resource set and the second frequency domain resource set, when the terminal device switches from the first frequency domain resource set to the second frequency domain resource set for data transmission, it is determined that the frequency domain resource set where the switching time is located is the frequency domain resource set with more vacant symbols of the first frequency band in the first frequency domain resource set or the second frequency domain resource set. Therefore, the switching time is located in the frequency domain resource set with more vacant symbols, so that symbols with actual information transmission can be avoided from being used for switching, thereby improving the spectrum utilization efficiency of the terminal device.

[0276] In some embodiments, the number of vacant symbols of the first frequency band in the first frequency domain resource set is the number of vacant symbols at the end of the time slot where the first frequency band is located, and the number of vacant symbols of the first frequency band in the second frequency domain resource set is the number of vacant symbols at the beginning of the time slot where the first frequency band is located.

[0277] The number of vacant symbols of the first frequency band in the first frequency domain resource set is the number of vacant symbols at the end of the time slot where the first frequency band is located, which can be understood as the number of vacant symbols at the end of the time slot of the frequency band where the first frequency band is located before switching; the number of vacant symbols of the first frequency band in the second frequency domain resource set is the number of vacant symbols at the beginning of the time slot where the first frequency band is located, which can be understood as the number of vacant symbols at the beginning of the time slot of the frequency band where the first frequency band is located after switching.

[0278] In some implementations, the terminal device determines a set of frequency domain resources where the switching time is located, which can also be understood as the terminal device determining the frequency domain resources where the switching time is located.

[0279] In this case, the frequency domain resource set is a frequency domain resource set with more empty symbols in the first frequency band in the first frequency domain resource set or the second frequency domain resource set. It can also be understood that the frequency domain resources where the switching time is located are located in the frequency domain resource set where the first frequency band with more empty symbols is located.

[0280] Alternatively, the frequency domain resource set is a frequency domain resource set with more empty symbols in the first frequency band in the first frequency domain resource set or the second frequency domain resource set. It can also be understood that the frequency domain resource at the switching time is the pre-switching frequency band or the post-switching frequency band where the first frequency band with more empty symbols is located.

[0281] For example, Figure 8 FIG. 1 is a schematic flow chart of another switching method provided in an embodiment of the present application. Figure 8 As shown, the switching method 400 may be applied to a terminal device, and the switching method 400 may at least include step 410 .

[0282] 410. When switching from a first frequency domain resource set to a second frequency domain resource set for data transmission, determine a frequency domain resource set where a switching time is located.

[0283] Among them, the first frequency domain resource set includes at least one frequency band, the second frequency domain resource set includes at least one frequency band, the first frequency domain resource set and the second frequency domain resource set both include the first frequency band, and the priority of the first frequency band is higher than the priority of other frequency bands in the first frequency domain resource set and the second frequency domain resource set.

[0284] The frequency domain resource set is a frequency domain resource set in which information carried by the first frequency band in the first frequency domain resource set or the second frequency domain resource set does not include uplink control information.

[0285] It should be understood that the frequency domain resource set is a frequency domain resource set where the switching time is located.

[0286] It should be understood that reference may be made to the relevant description in the foregoing text regarding the first frequency domain resource set and the second frequency domain resource set.

[0287] Exemplarily, when the information carried by the first frequency band in the first frequency domain resource set does not include uplink control information, the frequency domain resource set where the switching time is located is the first frequency domain resource set. It can be understood that the information carried by the first frequency band in the second frequency domain resource set includes uplink control information.

[0288] Alternatively, when the information carried by the first frequency band in the second frequency domain resource set does not include uplink control information, the frequency domain resource set where the switching time is located is the second frequency domain resource set. It can be understood that the information carried by the first frequency band in the first frequency domain resource set includes uplink control information.

[0289] In some implementations, the uplink control information includes at least one of a hybrid automatic repeat request and a channel state information.

[0290] For example, the channel state information may be aperiodic channel state information.

[0291] Exemplarily, the uplink control information may also include other information, such as an automatic retransmission request, etc., which is not limited in the embodiments of the present application.

[0292] Based on the embodiments of the present application, when the information carried in a frequency domain resource set in the first frequency band includes uplink control information, and the information carried in another frequency domain resource set does not include uplink control information, it means that the first frequency band carrying the uplink control information is more important. Therefore, the terminal device determines that the frequency domain resource set where the switching time is located is the frequency domain resource set that carries information that does not include uplink control information, thereby protecting the transmission of the uplink control information from being interrupted.

[0293] In some implementations, the terminal device determines a set of frequency domain resources where the switching time is located, which can also be understood as the terminal device determining the frequency domain resources where the switching time is located.

[0294] In this case, the frequency domain resource set is a frequency domain resource set in which the information carried by the first frequency band in the first frequency domain resource set or the second frequency domain resource set does not include uplink control information. It can also be understood that the frequency domain resource where the switching time is located is located in the frequency domain resource set where the first frequency band that does not carry uplink control information is located.

[0295] Alternatively, the frequency domain resource set is a frequency domain resource set in which the information carried by the first frequency band in the first frequency domain resource set or the second frequency domain resource set does not include uplink control information. It can also be understood that the frequency domain resource where the switching time is located is located in the pre-switching frequency band or the post-switching frequency band where the first frequency band that does not carry uplink control information is located.

[0296] For example, Fig. 9 FIG. 1 is a schematic flow chart of another switching method provided in an embodiment of the present application. Fig. 9 As shown, the switching method 500 can be applied to a terminal device, and the switching method 500 can at least include steps 510-520.

[0297] 510, determine a target frequency domain resource set where a switching time is located, where the switching time is a time for switching from a first frequency domain resource set to a second frequency domain resource set for data transmission.

[0298] Among them, the first frequency domain resource set includes at least one frequency band, the second frequency domain resource set includes at least one frequency band, the first frequency domain resource set and the second frequency domain resource set both include the first frequency band, and the priority of the first frequency band is higher than the priority of other frequency bands in the first frequency domain resource set and the second frequency domain resource set.

[0299] Exemplarily, the target frequency domain resource set may be a first frequency domain resource set or a second frequency domain resource set. For example, the target frequency domain resource set may be randomly selected by the terminal device, or the target frequency domain resource set may be selected by the terminal device based on a certain rule, which is not limited in the embodiments of the present application.

[0300] It can be understood that the target frequency domain resource set where the switching time is located can also be understood as the target frequency domain resource set where the switching time expected or preferred by the terminal device is located. The tendency can also be understood as more inclined (preferred).

[0301] 520. Send first indication information, where the first indication information is used to indicate a target frequency domain resource set.

[0302] As an example, the first indication information can be directly used to indicate the target frequency domain resource set.

[0303] For example, when the target frequency domain resource set is the second frequency domain resource set, the first indication information can be directly used to indicate that the target frequency domain resource set is the second frequency domain resource set. Alternatively, when the target frequency domain resource set is the first frequency domain resource set, the first indication information can be directly used to indicate that the target frequency domain resource set is the first frequency domain resource set.

[0304] As another example, the first indication information may also be used to indirectly indicate the target frequency domain resource set.

[0305] For example, when the target frequency domain resource set is the second frequency domain resource set, the first indication information can be used to indicate that there is no first frequency domain resource set for the switching time, so that the network device can also determine that the switching time is located in the second frequency domain resource set. Alternatively, when the target frequency domain resource set is the first frequency domain resource set, the first indication information can be used to indicate that there is no second frequency domain resource set for the switching time, so that the network device can also determine that the switching time is located in the first frequency domain resource set. In the present application, not existing means: not expected to exist, not expected to be deducted, or not expected to exist.

[0306] Alternatively, when the target frequency domain resource set is the second frequency domain resource set, the first indication information can be used to indicate a first frequency domain resource set without switching time and a second frequency domain resource set with switching time, which is not limited in this embodiment of the present application.

[0307] Based on the embodiments of the present application, after determining the target frequency domain resource set where the switching time is located, the terminal device can send an indication message to the network device to indicate the network device the target frequency domain resource set where the switching time is located, thereby facilitating the network device to determine the target frequency domain resource set where the switching time is located, so as to further perform scheduling and other operations.

[0308] It can be understood that when the target frequency domain resource set is the first frequency domain resource set, it is beneficial for the transmission of reference information of the frequency band after switching to not be interrupted. When the target frequency domain resource set is the second frequency domain resource set, it is beneficial for the frequency band after switching to include the first frequency band as the associated frequency band, and the information transmission of the frequency band before switching where the first frequency band with high protection priority is located is not interrupted.

[0309] Optionally, the terminal device may also determine the target frequency domain resource set according to the method described above, which is not limited in the embodiments of the present application.

[0310] For example, Fig.10 FIG. 1 is a schematic flow chart of another switching method provided in an embodiment of the present application. Fig.10 As shown, the switching method 600 can be applied to a terminal device, and the switching method 600 can at least include step 610.

[0311] 610. When switching from a first frequency domain resource set to a second frequency domain resource set for information transmission, determine a target frequency domain resource at a switching time; the target frequency domain resource belongs to a third frequency domain resource set.

[0312] The first target frequency band belonging to the third frequency domain resource set meets the following characteristics:

[0313] The first target frequency band is both a pre-switching frequency band and a post-switching frequency band, and is a frequency band having no information transmission in one of the pre-switching frequency band and the post-switching frequency band.

[0314] The third frequency domain resource set is a subset of the set consisting of the first frequency domain resource set and the second frequency domain resource set; the switching time is the time for switching from the first frequency domain resource set to the second frequency domain resource set for information transmission.

[0315] It can be understood that the first frequency domain resource set, the second frequency domain resource set, the frequency band before switching and the frequency band after switching can refer to the relevant description in the above text.

[0316] In the present application, the target frequency domain resource belongs to the third frequency domain resource set, that is, the target frequency domain resource is determined from the third frequency domain resource set. The first target frequency band belonging to the third frequency domain resource set, that is, the first target frequency band belongs to a target frequency band of the third frequency domain resource set.

[0317] In the present application, the set consisting of the first frequency domain resource set and the second frequency domain resource set can be understood as the union of the first frequency domain resource set and the second frequency domain resource set. The third frequency domain resource set is a subset of the union, that is, the third frequency domain resource set is a part of the union.

[0318] As an example, the first frequency domain resource set may include frequency band A and frequency band C, the second frequency domain resource set may include frequency band B and frequency band A, and frequency band A has no information transmission in the second frequency domain resource set, then the third frequency domain resource set is a subset of the set consisting of frequency band A, frequency band B, and frequency band C. Frequency band A is both a pre-switching frequency band and a post-switching frequency band, and the first target frequency band is frequency band A.

[0319] Exemplarily, the target frequency domain resource may be the first target frequency band.

[0320] It should be understood that the first target frequency band being a frequency band without information transmission in one of the frequency bands before switching or after switching can be understood as follows:

[0321] In one example, the first target frequency band is a frequency band without information transmission in the frequency band before switching, and is a frequency band with information transmission in the frequency band after switching.

[0322] In another example, the first target frequency band is a frequency band with information transmission in the frequency band before switching, and is a frequency band without information transmission in the frequency band after switching.

[0323] It should be understood that the frequency bands without information transmission and the frequency bands with information transmission can be found in the relevant description in the previous text. For the sake of brevity, they will not be repeated here.

[0324] Based on the embodiment of the present application, when the first target frequency band is both the pre-switching frequency band and the post-switching frequency band, it helps the terminal device to determine the target frequency domain resources where the switching time is located.

[0325] Optionally, the terminal device may determine that the switching time is located on the side where the frequency band without information transmission is located. Thus, the terminal device will not interrupt the data transmission of the first target frequency band with actual information transmission, thus avoiding the problem of reducing the spectrum utilization efficiency when the switching time is located in the first target frequency band with actual information transmission.

[0326] In a possible implementation manner, the terminal device determines the target frequency domain resource where the switching time is located, including:

[0327] The terminal device determines a target frequency domain resource from the third frequency domain resource set, where the target frequency domain resource is a pre-switching frequency band or a post-switching frequency band of a frequency band that does not have the highest priority.

[0328] Exemplarily, if the frequency band before switching includes the frequency band with the highest priority, the target frequency domain resource is the frequency band after switching where another frequency band without the highest priority is located. Alternatively, if the frequency band after switching includes the frequency band with the highest priority, the target frequency domain resource is the frequency band before switching where another frequency band without the highest priority is located.

[0329] Based on the embodiments of the present application, the target frequency domain resource is a pre-switching frequency band or a post-switching frequency band that does not have the highest priority frequency band, so that the switching time will not be on the highest priority frequency band, which helps to protect the information transmission in the highest priority frequency band from being affected.

[0330] In a possible implementation manner, the priority of a frequency band without information transmission in one of the pre-switching frequency band or the post-switching frequency band where the first target frequency band is located is lower than the priority of a frequency band with information transmission.

[0331] Alternatively, the priority of a frequency band with information transmission in one of the pre-switching frequency band or the post-switching frequency band where the first target frequency band is located is higher than the priority of a frequency band without information transmission.

[0332] As an example, the first target frequency band in the frequency band before switching has information transmission, and the first target frequency band in the frequency band after switching does not have information transmission, then the priority of the first target frequency band in the frequency band before switching is higher than the priority of the first target frequency band in the frequency band after switching, or it can be understood that the priority of the first target frequency band in the frequency band after switching is lower than the priority of the first target frequency band in the frequency band before switching.

[0333] As another example, the first target frequency band in the frequency band before switching does not have information transmission, and the first target frequency band in the frequency band after switching has information transmission, then the priority of the first target frequency band in the frequency band before switching is lower than the priority of the first target frequency band in the frequency band after switching, or it can be understood that the priority of the first target frequency band in the frequency band after switching is higher than the priority of the first target frequency band in the frequency band before switching.

[0334] It should be understood that the terminal device determines that the target frequency domain resource where the switching time is located is on the side with low priority.

[0335] Based on the embodiment of the present application, the terminal device can clearly determine the priority of the first target frequency band in the frequency band before switching or the frequency band after switching, so that the terminal device can determine that the target frequency domain resource at the switching time is on the low priority side.

[0336] In this application, the following Guideline 3.1 can be introduced:

[0337] For all frequency bands involved in a handover, the terminal device determines the position of the handover time in a frequency band set as a pre-handover frequency band or a post-handover frequency band that is not the highest priority frequency band. In addition to the restrictions on frequency bands in the frequency band set described in criterion 2, the frequency band set may also include frequency bands that meet the following conditions:

[0338] (for dual UL)the band is contained in switching-from band(s)and switching-to band(s)wherein the band of one side with actual transmission and the band of the other side without actual transmission[the priority of the band with actual transmission is deemed as higher than the priority of the band without actual transmission]).

[0339] Optionally, the one frequency band set is a third frequency domain resource set, or the one frequency band set includes a third frequency domain resource set. The first target frequency band in the third frequency domain resource set meets the above conditions.

[0340] In a possible implementation, the method 600 further includes:

[0341] The terminal device determines that the priority of the first target frequency band that does not have information transmission in one of the frequency bands before switching or after switching is lower than the priority of the frequency band with information transmission;

[0342] Alternatively, the terminal device determines that the priority of the first target frequency band having information transmission in one of the frequency bands before switching or after switching is higher than the priority of the frequency band not having information transmission.

[0343] It should be understood that the terminal device determines that the target frequency domain resource where the switching time is located is on the side with low priority.

[0344] Based on the embodiment of the present application, the terminal device can determine the priority of the first target frequency band in the frequency band before switching or the frequency band after switching, so that the terminal device can determine that the target frequency domain resource at the switching time is on the low priority side.

[0345] In a possible implementation manner, the terminal device supports concurrent uplink in a frequency band of at least one of the first frequency domain resource set and the second frequency domain resource set;

[0346] Alternatively, the terminal device can perform concurrent uplink on the frequency band of at least one of the first frequency domain resource set and the second frequency domain resource set.

[0347] In this way, terminal devices can work simultaneously on multiple frequency bands, thereby avoiding transmission congestion and reducing data transmission delays.

[0348] In a possible implementation, when the first frequency domain resource set is switched with other frequency bands in the second frequency domain resource set, the terminal device cannot maintain data transmission on the first target frequency band.

[0349] When the first frequency domain resource set is switched with other frequency bands in the second frequency domain resource set, the terminal device cannot maintain data transmission on the first target frequency band, which can be understood as the inability to continue to transmit data on the first target frequency band during the switching of other frequency bands. Alternatively, the switching of the RF chain on the first target frequency band will be affected by the switching of other RF chains, and the RF chain on the first target frequency band cannot continue to work during the switching of other RF chains.

[0350] In a possible implementation manner, the terminal device determines the target frequency domain resource where the switching time is located, including:

[0351] The terminal device determines the target frequency domain resources according to the number of vacant symbols in the time slots where the frequency bands before and after the switching are located.

[0352] It is understandable that the control symbol can refer to the related description in the foregoing text. The number of vacant symbols reserved in the time slot where the frequency band before switching or the frequency band after switching is located in the first target frequency band is different.

[0353] In a possible implementation, determining the target frequency domain resource according to the number of vacant symbols in the time slot where the frequency band before switching and the frequency band after switching are located includes:

[0354] The terminal device determines that the target frequency domain resource is the side with a larger number of vacant symbols in the pre-switching frequency band or the post-switching frequency band where the first target frequency band is located.

[0355] In the present application, when there are many vacant symbols in a frequency band, it means that there are many time slots in which no information is transmitted on the frequency band.

[0356] Based on the embodiment of the present application, the switching time is located on the side with more vacant symbols, so as to avoid symbols with actual information transmission being used for switching, thereby improving the spectrum utilization efficiency of the terminal device.

[0357] In a possible implementation, the number of vacant symbols in the time slot where the frequency band is located before switching is the number of vacant symbols at the end of the time slot where the first target frequency band is located, and the number of vacant symbols in the time slot where the frequency band is located after switching is the number of vacant symbols at the beginning of the time slot where the first target frequency band is located.

[0358] In a possible implementation, the method 600 further includes:

[0359] The terminal device determines the priority of the pre-switching frequency band where the first target frequency band is located and the priority of the post-switching frequency band where the first target frequency band is located;

[0360] The terminal device determines the target frequency domain resource where the switching time is located, including:

[0361] The terminal device determines that the target frequency domain resource where the switching time is located is the pre-switching frequency band or the post-switching frequency band where the first target frequency band with a low priority is located.

[0362] Exemplarily, if the terminal device determines that the priority of the pre-switching frequency band where the first target frequency band is located is higher than the priority of the post-switching frequency band where the first target frequency band is located, the terminal device can determine that the switching time is in the post-switching frequency band where the first target frequency band with low priority is located.

[0363] Based on the embodiment of the present application, the terminal device can determine that the target frequency domain resource at the switching time is the pre-switching frequency band or the post-switching frequency band where the first target frequency band with low priority is located, which is beneficial to protect the information transmission of the high-priority frequency band from being affected.

[0364] In a possible implementation manner, the terminal device determines the priority of the pre-switching frequency band where the first target frequency band is located and the priority of the post-switching frequency band where the first target frequency band is located, including:

[0365] When the information carried by the pre-switching frequency band where the first target frequency band is located includes uplink control information, the terminal device determines that the priority of the pre-switching frequency band where the first target frequency band is located is higher than the priority of the post-switching frequency band where the first target frequency band is located;

[0366] Alternatively, when the information carried by the post-switching frequency band where the first target frequency band is located includes uplink control information, the terminal device determines that the priority of the post-switching frequency band where the first target frequency band is located is higher than the priority of the pre-switching frequency band where the first target frequency band is located.

[0367] Exemplarily, the uplink control information may include at least one of a hybrid automatic repeat request and channel state information.

[0368] For example, the channel state information may be aperiodic channel state information.

[0369] The uplink control information may also include other information, such as an automatic retransmission request, etc., which is not limited in the embodiment of the present application.

[0370] Based on the embodiment of the present application, although the frequency band before switching and the frequency band after switching both include the first target frequency band, the terminal device can determine that the priority of the first target frequency band carrying the uplink control information is better, so that the terminal device determines that the frequency domain resource at the switching time is the frequency band that carries information that does not include the uplink control information, thereby protecting the transmission of the uplink control information from being interrupted.

[0371] For example, Fig.11 FIG. 1 is a schematic flow chart of another switching method provided in an embodiment of the present application. Fig.11 As shown, the switching method 700 can be applied to a terminal device, and the switching method 700 can at least include step 710.

[0372] 710. When switching from a first frequency domain resource set to a second frequency domain resource set for information transmission, determine that a target frequency domain resource at a switching time is one of a pre-switching frequency band or a post-switching frequency band where a second target frequency band is located.

[0373] The second target frequency band satisfies the following conditions: the pre-switching frequency band corresponding to the first frequency domain resource set includes the second target frequency band, and the post-switching frequency band corresponding to the second frequency domain resource set includes the second target frequency band; the second target frequency band has the highest priority; the second target frequency band is a frequency band without information transmission in one of the pre-switching frequency band or the post-switching frequency band, and is a frequency band with information transmission in the other.

[0374] In the present application, the second target frequency band having the highest priority can be understood as the priority of the second target frequency band being higher than the priorities of other frequency bands in the first frequency domain resource set and the second frequency domain resource set.

[0375] The second target frequency band is a frequency band without information transmission in one of the frequency band before switching or the frequency band after switching, and is a frequency band with information transmission in the other. It can be understood that the second target frequency band is a frequency band without information transmission in the frequency band before switching, and is a frequency band with information transmission in the frequency band after switching, or the second target frequency band is a frequency band with information transmission in the frequency band before switching, and is a frequency band without information transmission in the frequency band after switching.

[0376] It can be understood that the frequency bands with information transmission and the frequency bands without information transmission can refer to the relevant description in the previous text.

[0377] In a possible implementation manner, determining that the target frequency domain resource where the switching time is located is one of the pre-switching frequency band or the post-switching frequency band where the second target frequency band is located includes:

[0378] When the second target frequency band is a frequency band without information transmission in the frequency band after switching, and / or, the second target frequency band is a frequency band with information transmission in the frequency band before switching, determining that the frequency domain resource where the switching time is located is the frequency band after switching where the second target frequency band is located; and / or,

[0379] When the second target frequency band is a frequency band without information transmission in the frequency band before switching, and / or the second target frequency band is a frequency band with information transmission in the frequency band after switching, the frequency domain resource where the switching time is determined is the frequency band before switching where the second target frequency band is located.

[0380] Based on the embodiments of the present application, the terminal device can determine that the target frequency domain resource where the switching time is located is a frequency band without information transmission, so that the terminal device will not interrupt the data transmission of the frequency band with actual information transmission, avoiding the problem of reduced spectrum utilization efficiency when the switching time is located in the frequency band with actual information transmission.

[0381] In a possible implementation manner, the second target frequency band is a frequency band that does not have the highest priority.

[0382] Based on the embodiment of the present application, the switching time is located in the second target frequency band that does not have the highest priority, which helps to protect the information transmission in the frequency band with the highest priority from being affected.

[0383] In this application, the following Guideline 3.2 can be introduced:

[0384] For all frequency bands involved in a handover, the terminal device determines the position of the handover time in a frequency band set as a pre-handover frequency band or a post-handover frequency band that is not the highest priority frequency band. In addition to the restrictions on frequency bands in the frequency band set described in criterion 2, the frequency band set may also include frequency bands that meet the following conditions:

[0385] When one band is contained in both (switching-from band(s)and switching-to band(s))with one side with actual transmission and the other side without actual transmission,it belongs to the set of bands,and the priority of the band with actual transmission is higher than the priority of the band without actual transmission.

[0386] Optionally, the second target frequency band meets the above conditions.

[0387] In a possible implementation, the method 700 further includes:

[0388] The terminal device determines that the priority of the first target frequency band that does not have information transmission in one of the frequency bands before switching or after switching is lower than the priority of the frequency band with information transmission;

[0389] Alternatively, the terminal device determines that the priority of the first target frequency band having information transmission in one of the frequency bands before switching or after switching is higher than the priority of the frequency band not having information transmission.

[0390] It should be understood that the terminal device determines that the target frequency domain resource where the switching time is located is on the side with low priority.

[0391] Based on the embodiment of the present application, the terminal device can determine the priority of the first target frequency band in the frequency band before switching or the frequency band after switching, so that the terminal device can determine that the target frequency domain resource at the switching time is on the low priority side.

[0392] In a possible implementation manner, the terminal device supports concurrent uplink in a frequency band of at least one of the first frequency domain resource set and the second frequency domain resource set;

[0393] Alternatively, the terminal device can perform concurrent uplink on the frequency band of at least one of the first frequency domain resource set and the second frequency domain resource set.

[0394] In this way, terminal devices can work simultaneously on multiple frequency bands, thereby avoiding transmission congestion and reducing data transmission delays.

[0395] In a possible implementation, when the first frequency domain resource set is switched with other frequency bands in the second frequency domain resource set, the terminal device cannot maintain data transmission on the first target frequency band.

[0396] When the first frequency domain resource set is switched with other frequency bands in the second frequency domain resource set, the terminal device cannot maintain data transmission on the first target frequency band, which can be understood as the inability to continue to transmit data on the first target frequency band during the switching of other frequency bands. Alternatively, the switching of the RF chain on the first target frequency band will be affected by the switching of other RF chains, and the RF chain on the first target frequency band cannot continue to work during the switching of other RF chains.

[0397] In a possible implementation manner, the terminal device determines the target frequency domain resource where the switching time is located, including:

[0398] The terminal device determines the target frequency domain resources according to the number of vacant symbols in the time slots where the frequency bands before and after the switching are located.

[0399] It can be understood that the control symbols can refer to the relevant description in the previous text.

[0400] In a possible implementation, determining the target frequency domain resource according to the number of vacant symbols in the time slot where the frequency band before switching and the frequency band after switching are located includes:

[0401] The terminal device determines that the target frequency domain resource is the side with a larger number of vacant symbols in the pre-switching frequency band or the post-switching frequency band where the first target frequency band is located.

[0402] In the present application, when there are many vacant symbols in a frequency band, it means that there are many time slots in which no information is transmitted on the frequency band.

[0403] Based on the embodiment of the present application, the switching time is located on the side with more vacant symbols, so as to avoid symbols with actual information transmission being used for switching, thereby improving the spectrum utilization efficiency of the terminal device.

[0404] In a possible implementation, the number of vacant symbols in the time slot where the frequency band is located before switching is the number of vacant symbols at the end of the time slot where the first target frequency band is located, and the number of vacant symbols in the time slot where the frequency band is located after switching is the number of vacant symbols at the beginning of the time slot where the first target frequency band is located.

[0405] In a possible implementation, the method 700 further includes:

[0406] The terminal device determines the priority of the pre-switching frequency band where the first target frequency band is located and the priority of the post-switching frequency band where the first target frequency band is located;

[0407] The terminal device determines the target frequency domain resource where the switching time is located, including:

[0408] The terminal device determines that the target frequency domain resource where the switching time is located is the pre-switching frequency band or the post-switching frequency band where the first target frequency band with a low priority is located.

[0409] Exemplarily, if the terminal device determines that the priority of the pre-switching frequency band where the first target frequency band is located is higher than the priority of the post-switching frequency band where the first target frequency band is located, the terminal device can determine that the switching time is in the post-switching frequency band where the first target frequency band with low priority is located.

[0410] Based on the embodiment of the present application, the terminal device can determine that the target frequency domain resource at the switching time is the pre-switching frequency band or the post-switching frequency band where the first target frequency band with low priority is located, which is beneficial to protect the information transmission of the high-priority frequency band from being affected.

[0411] In a possible implementation manner, the terminal device determines the priority of the pre-switching frequency band where the first target frequency band is located and the priority of the post-switching frequency band where the first target frequency band is located, including:

[0412] When the information carried by the pre-switching frequency band where the first target frequency band is located includes uplink control information, the terminal device determines that the priority of the pre-switching frequency band where the first target frequency band is located is higher than the priority of the post-switching frequency band where the first target frequency band is located;

[0413] Alternatively, when the information carried by the post-switching frequency band where the first target frequency band is located includes uplink control information, the terminal device determines that the priority of the post-switching frequency band where the first target frequency band is located is higher than the priority of the pre-switching frequency band where the first target frequency band is located.

[0414] Exemplarily, the uplink control information may include at least one of a hybrid automatic repeat request and channel state information.

[0415] For example, the channel state information may be aperiodic channel state information.

[0416] The uplink control information may also include other information, such as an automatic retransmission request, etc., which is not limited in the embodiment of the present application.

[0417] Based on the embodiment of the present application, although the frequency band before switching and the frequency band after switching both include the first target frequency band, the terminal device can determine that the priority of the first target frequency band carrying the uplink control information is better, so that the terminal device determines that the frequency domain resource at the switching time is the frequency band that carries information that does not include the uplink control information, thereby protecting the transmission of the uplink control information from being interrupted.

[0418] It should also be understood that the various embodiments in the foregoing of this application can also be combined with each other, or partially combined, to form new embodiments, and such technical solutions should not be considered to exceed the protection scope of this application. The above embodiments can also be implemented separately, and the embodiments of this application do not limit this.

[0419] The following will be combined Fig.12 It should be understood that the description of the device embodiment corresponds to the description of the method embodiment, so the contents not described in detail can be referred to the method embodiment above, and some contents will not be repeated for brevity.

[0420] Fig.12 1 is a schematic block diagram of a communication device provided in an embodiment of the present application. The communication device 10 includes a processing module 11, which is used to process data. The processing module 11 is used to perform other operations except receiving and sending.

[0421] Optionally, the communication device 10 may further include an interface module 12, which may implement corresponding communication functions, or be used to perform operations related to receiving and sending. The interface module 12 may also be referred to as a communication interface, a communication unit, a transceiver unit, a transceiver module, etc.

[0422] Optionally, the communication device 10 may further include a storage module 13, which may be used to store instructions and / or data. The processing module 11 may read the instructions and / or data in the storage module so that the device implements the actions of the devices in the aforementioned method embodiments.

[0423] Exemplarily, the communication device 10 may be the terminal device mentioned above, or a component (such as a chip) of the terminal device.

[0424] The communication device 10 can implement the steps or processes executed by the terminal device in the above method embodiment, wherein the processing module 11 can be used to execute the processing-related operations of the terminal device in the above method embodiment, and the interface module 12 can be used to execute the sending and receiving-related operations of the terminal device in the above method embodiment.

[0425] For example, the communication device 10 may be used to execute methods 200, 300, 400, 500, 600, and 700. When the communication device 10 is used to execute method 500, the interface module 12 may be used to execute steps of sending and receiving information in the method, such as sending step 510.

[0426] In one possible implementation, the processing module 11 is used to determine the frequency domain resource set where the switching time is located when switching from a first frequency domain resource set to a second frequency domain resource set for data transmission; wherein the first frequency domain resource set includes at least one frequency band, the second frequency domain resource set includes at least one frequency band, the first frequency domain resource set and the second frequency domain resource set both include the first frequency band, and the priority of the first frequency band is higher than the priority of other frequency bands in the first frequency domain resource set and the second frequency domain resource set; the frequency domain resource set is a frequency domain resource set where the first frequency band that does not have information transmission is located.

[0427] In one possible implementation, the processing module 11 is used to determine the frequency domain resource set where the switching time is located when switching from a first frequency domain resource set to a second frequency domain resource set for data transmission; wherein the first frequency domain resource set includes at least one frequency band, the second frequency domain resource set includes at least one frequency band, the first frequency domain resource set and the second frequency domain resource set both include the first frequency band, and the priority of the first frequency band is higher than the priority of other frequency bands in the first frequency domain resource set and the second frequency domain resource set; the frequency domain resource set is a frequency domain resource set with more vacant symbols in the first frequency band in the first frequency domain resource set or the second frequency domain resource set.

[0428] In one possible implementation, the processing module 11 is used to determine the frequency domain resource set where the switching time is located when switching from a first frequency domain resource set to a second frequency domain resource set for data transmission; wherein the first frequency domain resource set includes at least one frequency band, the second frequency domain resource set includes at least one frequency band, the first frequency domain resource set and the second frequency domain resource set both include the first frequency band, and the priority of the first frequency band is higher than the priority of other frequency bands in the first frequency domain resource set and the second frequency domain resource set; the frequency domain resource set is a frequency domain resource set in which the information carried by the first frequency band in the first frequency domain resource set or the second frequency domain resource set does not include uplink control information.

[0429] The communication device 10 may also be the network device mentioned above (such as an access network device), or a component of a network device (such as a chip).

[0430] When the communication device 10 is used to execute the method 500 , the interface module 12 may be used to receive step 520 .

[0431] In addition, the interface module 12 may also be a transceiver circuit (for example, may include a receiving circuit and a sending circuit), and the processing module 11 may be a processing circuit.

[0432] It should be understood that the specific process of each unit executing the above corresponding steps has been described in detail in the above method embodiment, and for the sake of brevity, it will not be repeated here.

[0433] The embodiment of the present application further provides a processor, which is used to execute a computer program or instruction stored in a memory, or read data / signaling stored in the memory, so as to execute the method in each method embodiment above. Optionally, there are one or more processors.

[0434] An embodiment of the present application also provides a chip, including a processor and a communication interface, wherein the processor reads instructions stored in a memory through the communication interface and executes the methods provided in the above embodiments.

[0435] An embodiment of the present application also provides a computer-readable storage medium on which computer instructions for implementing the methods executed by the device in the above-mentioned method embodiments are stored.

[0436] For example, when the computer program is executed by a computer, the computer can implement the method executed by the terminal device or the network device in each embodiment of the above method.

[0437] An embodiment of the present application also provides a computer program product, comprising instructions, which, when executed by a computer, implement the methods performed by a terminal device or a network device in the above-mentioned method embodiments.

[0438] An embodiment of the present application also provides a communication system, including the terminal device and network device described in any of the preceding embodiments.

[0439] Those of ordinary skill 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 to be beyond the scope of this application.

[0440] Those skilled in the art can 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.

[0441] In the several embodiments provided in the present 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 only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, 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.

[0442] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0443] 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.

[0444] 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 can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods 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.

[0445] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A switching method, characterized in that: The method is applied to a terminal device, and the method comprises: When switching from a first frequency domain resource set to a second frequency domain resource set for data transmission, determining a frequency domain resource set where a switching time is located; The first frequency domain resource set includes at least one frequency band, the second frequency domain resource set includes at least one frequency band, the first frequency domain resource set and the second frequency domain resource set both include a first frequency band, and the priority of the first frequency band is higher than the priority of other frequency bands in the first frequency domain resource set and the second frequency domain resource set; The frequency domain resource set is a frequency domain resource set where a first frequency band having no information transmission is located.

2. The method according to claim 1, characterized in that The first frequency band included in the first frequency domain resource set has information transmission, and the first frequency band included in the second frequency domain resource set has no information transmission; or, The first frequency band included in the first frequency domain resource set has no information transmission, and the first frequency band included in the second frequency domain resource set has information transmission.

3. The method according to claim 1 or 2, characterized in that: The method further comprises: The terminal device determines that the priority of the first frequency band without information transmission in the first frequency domain resource set and the second frequency domain resource set is lower than the priority of the first frequency band with information transmission.

4. The method according to claim 1 or 2, characterized in that: The priority of the first frequency band without information transmission in the first frequency domain resource set and the second frequency domain resource set is lower than the priority of the first frequency band with information transmission.

5. The method according to any one of claims 1 to 4, characterized in that The terminal device supports concurrent uplink in a frequency band of at least one of the first frequency domain resource set and the second frequency domain resource set; or, The terminal device can perform concurrent uplink on the frequency band of at least one of the first frequency domain resource set and the second frequency domain resource set.

6. The method according to any one of claims 1 to 5, characterized in that When the first frequency domain resource set is switched with other frequency bands in the second frequency domain resource set, the terminal device cannot maintain data transmission on the first frequency band.

7. A switching method, characterized in that: The method is applied to a terminal device, and the method comprises: When switching from a first frequency domain resource set to a second frequency domain resource set for data transmission, determining a frequency domain resource set where a switching time is located; The first frequency domain resource set includes at least one frequency band, the second frequency domain resource set includes at least one frequency band, the first frequency domain resource set and the second frequency domain resource set both include a first frequency band, and the priority of the first frequency band is higher than the priority of other frequency bands in the first frequency domain resource set and the second frequency domain resource set; The frequency domain resource set is a frequency domain resource set having more vacant symbols in the first frequency band in the first frequency domain resource set or the second frequency domain resource set.

8. The method according to claim 7, characterized in that The number of vacant symbols of the first frequency band in the first frequency domain resource set is the number of vacant symbols at the end of the time slot where the first frequency band is located, and the number of vacant symbols of the first frequency band in the second frequency domain resource set is the number of vacant symbols at the beginning of the time slot where the first frequency band is located.

9. A switching method, characterized in that: The method is applied to a terminal device, and the method comprises: When switching from a first frequency domain resource set to a second frequency domain resource set for data transmission, determining a frequency domain resource set where a switching time is located; The first frequency domain resource set includes at least one frequency band, the second frequency domain resource set includes at least one frequency band, the first frequency domain resource set and the second frequency domain resource set both include a first frequency band, and the priority of the first frequency band is higher than the priority of other frequency bands in the first frequency domain resource set and the second frequency domain resource set; The frequency domain resource set is a frequency domain resource set in which information carried by the first frequency band in the first frequency domain resource set or the second frequency domain resource set does not include uplink control information.

10. The method according to claim 9, characterized in that The uplink control information includes at least one of hybrid automatic repeat request and channel state information.

11. A switching method, characterized in that: The method is applied to a terminal device, and the method comprises: Determine a target frequency domain resource set where a switching time is located; the switching time is a time for switching from a first frequency domain resource set to a second frequency domain resource set for data transmission; Sending first indication information, where the first indication information is used to indicate the target frequency domain resource set; Among them, the first frequency domain resource set includes at least one frequency band, the second frequency domain resource set includes at least one frequency band, the first frequency domain resource set and the second frequency domain resource set both include a first frequency band, and the priority of the first frequency band is higher than the priority of other frequency bands in the first frequency domain resource set and the second frequency domain resource set.

12. A terminal device, characterized in that: include: A processing module, the processing module being used to determine the frequency domain resource set where the switching time is located when switching from the first frequency domain resource set to the second frequency domain resource set for data transmission; The first frequency domain resource set includes at least one frequency band, the second frequency domain resource set includes at least one frequency band, the first frequency domain resource set and the second frequency domain resource set both include a first frequency band, and the priority of the first frequency band is higher than the priority of other frequency bands in the first frequency domain resource set and the second frequency domain resource set; The frequency domain resource set is a frequency domain resource set where a first frequency band having no information transmission is located.

13. The terminal device according to claim 12, characterized in that: The first frequency band included in the first frequency domain resource set has information transmission, and the first frequency band included in the second frequency domain resource set has no information transmission; or, The first frequency band included in the first frequency domain resource set has no information transmission, and the first frequency band included in the second frequency domain resource set has information transmission.

14. The terminal device according to claim 12 or 13, characterized in that: The processing module is also used for: It is determined that the priority of the first frequency band without information transmission in the first frequency domain resource set and the second frequency domain resource set is lower than the priority of the first frequency band with information transmission.

15. The terminal device according to claim 12 or 13, characterized in that: The priority of the first frequency band without information transmission in the first frequency domain resource set and the second frequency domain resource set is lower than the priority of the first frequency band with information transmission.

16. The terminal device according to any one of claims 12 to 15, characterized in that: The terminal device supports concurrent uplink in a frequency band of at least one of the first frequency domain resource set and the second frequency domain resource set; or, The terminal device can perform concurrent uplink on the frequency band of at least one of the first frequency domain resource set and the second frequency domain resource set.

17. The terminal device according to any one of claims 12 to 16, characterized in that: When the first frequency domain resource set is switched with other frequency bands in the second frequency domain resource set, the terminal device cannot maintain data transmission on the first frequency band.

18. A terminal device, characterized in that: include: A processing module, the processing module being used to determine the frequency domain resource set where the switching time is located when switching from the first frequency domain resource set to the second frequency domain resource set for data transmission; The first frequency domain resource set includes at least one frequency band, the second frequency domain resource set includes at least one frequency band, the first frequency domain resource set and the second frequency domain resource set both include a first frequency band, and the priority of the first frequency band is higher than the priority of other frequency bands in the first frequency domain resource set and the second frequency domain resource set; The frequency domain resource set is a frequency domain resource set having more vacant symbols in the first frequency band in the first frequency domain resource set or the second frequency domain resource set.

19. The terminal device according to claim 18, characterized in that: The number of vacant symbols of the first frequency band in the first frequency domain resource set is the number of vacant symbols at the end of the time slot where the first frequency band is located, and the number of vacant symbols of the first frequency band in the second frequency domain resource set is the number of vacant symbols at the beginning of the time slot where the first frequency band is located.

20. A terminal device, characterized in that: include: A processing module, the processing module being used to determine the frequency domain resource set where the switching time is located when switching from the first frequency domain resource set to the second frequency domain resource set for data transmission; The first frequency domain resource set includes at least one frequency band, the second frequency domain resource set includes at least one frequency band, the first frequency domain resource set and the second frequency domain resource set both include a first frequency band, and the priority of the first frequency band is higher than the priority of other frequency bands in the first frequency domain resource set and the second frequency domain resource set; The frequency domain resource set is a frequency domain resource set in which information carried by the first frequency band in the first frequency domain resource set or the second frequency domain resource set does not include uplink control information.

21. The terminal device according to claim 20, characterized in that: The uplink control information includes at least one of hybrid automatic repeat request and channel state information.

22. A terminal device, characterized in that: include: A processing module, the processing module is used to determine a target frequency domain resource set where a switching time is located; The switching time is the time for switching from the first frequency domain resource set to the second frequency domain resource set for data transmission; An interface module, the interface module is used to send first indication information, where the first indication information is used to indicate the target frequency domain resource set; Among them, the first frequency domain resource set includes at least one frequency band, the second frequency domain resource set includes at least one frequency band, the first frequency domain resource set and the second frequency domain resource set both include a first frequency band, and the priority of the first frequency band is higher than the priority of other frequency bands in the first frequency domain resource set and the second frequency domain resource set.

23. A chip, characterized in that: The method comprises at least one processor and a communication interface, wherein the communication interface is used to receive data and / or information and transmit the received data and / or information to the processor, and the processor processes the data and / or information to execute the method according to any one of claims 1 to 11.

24. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed on a computer, the computer is enabled to execute the method according to any one of claims 1 to 11.

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