Method for determining a handover time position and related apparatus

Abstract

A method for determining a switching time position and a related device, the method comprising: when switching from at least one first frequency domain resource to at least one second frequency domain resource, determining a frequency domain resource in which a switching time is located from the at least one first frequency domain resource and the at least one second frequency domain resource. The frequency domain resource in which the switching time is located is a frequency domain resource without a highest priority among frequency domain resources scheduled for information transmission, and the frequency domain resource in which the switching time is located is the at least one first frequency domain resource or the at least one second frequency domain resource. It should be understood that the switching time is a time of switching from the at least one first frequency domain resource to the at least one second frequency domain resource. According to the embodiments of the present application, the switching time position can be determined for a switching scenario among three or even more frequency domain resources, which is beneficial to improving the reliability of communication and minimizing the waste of spectrum resources.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a method and related apparatus for determining the switching time position. Background Technology

[0002] In 5G New Radio (NR), access network equipment (e.g., base stations) with high power can achieve good downlink coverage during downlink transmission. However, due to the limited transmit power of terminal equipment, uplink coverage may be limited during uplink transmission. To address the limited uplink coverage in 5G NR, the industry has proposed supplementary uplink (SUL) technology. This involves configuring an additional SUL carrier in addition to the normal uplink (NUL) carrier to assist uplink transmission, thereby improving uplink coverage and capacity. In SUL technology, terminal equipment can dynamically select the transmission link between NUL and SUL; the handover between these two ULs is called a two-band handover. During the handover between the two bands, the access network equipment can use a configuration index (CC index) to indicate which band the switching period should be placed on. With the development of communication technology, there is a growing demand for terminal devices to dynamically switch between three or more bands to improve uplink peak rates. Therefore, scenarios involving switching between three or more bands exist. However, a solution has yet to be proposed for determining the exact band where the switching period occurs during such switching. Summary of the Invention

[0003] This application provides a method and related apparatus for determining the switching time position, which can determine the switching time position in scenarios where three or more frequency domain resources are switched, thereby improving communication reliability and minimizing the waste of spectrum resources.

[0004] Firstly, this application provides a method for determining the handover time location, executed by a communication device, which can be a terminal device or an access network device. Optionally, the communication device can also be a module within the terminal device or access network device. In this method, when handing over from at least one first frequency domain resource to at least one second frequency domain resource, the frequency domain resource where the handover time occurs is determined from the at least one first frequency domain resource and the at least one second frequency domain resource. The frequency domain resource where the handover time occurs is the frequency domain resource that does not have the highest priority among the frequency domain resources scheduled for information transmission, and the frequency domain resource where the handover time occurs is at least one first frequency domain resource or at least one second frequency domain resource. Understandably, the handover time is the time from at least one first frequency domain resource to at least one second frequency domain resource.

[0005] The frequency domain resource where the handover time occurs is at least one first frequency domain resource, meaning the frequency domain resource where the handover time occurs is the same as the frequency domain resource before the handover. The frequency domain resource where the handover time occurs is at least one second frequency domain resource, meaning the frequency domain resource where the handover time occurs is the same as the frequency domain resource after the handover.

[0006] Optionally, the statement "the frequency domain resource where the switching time is located is the frequency domain resource that is scheduled for information transmission but does not have the highest priority, and the frequency domain resource where the switching time is located is at least one first frequency domain resource or at least one second frequency domain resource" can also be replaced with: "the frequency domain resource where the switching time is located is the frequency domain resource that will be affected by the switching time but does not have the highest priority, and the frequency domain resource where the switching time is located is either the frequency domain resource before the switch or the frequency domain resource after the switch." Here, "affect" in this application can also be understood as interference, interruption, or disruption, etc., and is not limited to this definition.

[0007] Optionally, the statement "The frequency domain resource where the handover time is located is not the highest priority frequency domain resource among the frequency domain resources scheduled for information transmission, and the frequency domain resource where the handover time is located is at least one first frequency domain resource or at least one second frequency domain resource" can be replaced with: "The frequency domain resource where the handover time is located satisfies the following two conditions: Condition 1: When the frequency domain resource where the handover time is located is at least one first frequency domain resource or at least one second frequency domain resource, the frequency domain resource where the handover time is located does not include the highest priority frequency domain resource; or, when the frequency domain resource where the handover time is located is the frequency domain resource before the handover, the frequency domain resource before the handover does not include the highest priority frequency domain resource; and / or, the frequency domain resource where the handover time is located is the frequency domain resource after the handover." When using frequency domain resources, the switched-off frequency domain resources do not include the frequency domain resources with the highest priority. Condition 2: When the frequency domain resource where the switching time occurs is at least one first frequency domain resource or at least one second frequency domain resource, the information transmission of the frequency domain resource where the switching time occurs will be affected by the switching time (i.e., the information transmission will be interrupted or partially interrupted by the switching time); or, when the frequency domain resource where the switching time occurs is the frequency domain resource before the switching, the information transmission in the frequency domain resource before the switching will be affected by the switching time; and / or, when the frequency domain resource where the switching time occurs is the frequency domain resource after the switching, the information transmission in the frequency domain resource after the switching will be affected by the switching time. Wherein, the aforementioned information transmission includes at least one of data information transmission, control information transmission, or control signal transmission. For example, the information transmission can be uplink information transmission.

[0008] Optionally, the statement "The frequency domain resource where the switching time is located is among the frequency domain resources scheduled for information transmission, and does not have the highest priority frequency domain resource, and the frequency domain resource where the switching time is located is at least one first frequency domain resource or at least one second frequency domain resource" can be replaced with: "The frequency domain resource where the switching time is located is determined to meet the following conditions: First condition: The frequency resources before or after the switching to which the determined frequency domain resource where the switching time is located belong do not contain the frequency domain resource with the highest priority; Second condition: The frequency domain resource where the switching time is located is determined from the at least one first frequency domain resource and the at least one second frequency domain resource whose information transmission will be affected / interrupted by the switching time." Here, "...belongs to" can also be understood as "...is located" or "...corresponds to." "...does not contain" can also be replaced with "...is not," "...does not include," "...is not," or "...does not belong to," etc., without restriction.

[0009] In this application, for handover scenarios involving three or more frequency domain resources, the frequency domain resource where the handover occurs is the one that does not have the highest priority among the frequency domain resources scheduled for information transmission. This helps minimize the waste of spectrum resources and improves communication reliability. The reason for minimizing the waste of frequency domain resources is that, in this application, the priority of frequency domain resources with larger bandwidths is higher than that of frequency domain resources with smaller bandwidths. Choosing the handover time location on a lower-priority frequency domain resource protects the information transmission on the higher-priority frequency domain resources, thus reducing the waste of frequency domain resources.

[0010] In one possible implementation, the frequency domain resource scheduled for information transmission is neither an associated frequency domain resource nor a third frequency domain resource. Specifically, the duration of time on the third frequency domain resource that is not scheduled for information transmission is greater than or equal to the duration of the switching time.

[0011] Optionally, the frequency domain resources scheduled for information transmission are not associated frequency domain resources or are not third frequency domain resources. This can also be understood as: the frequency domain resources scheduled for information transmission do not contain associated frequency domain resources or third frequency domain resources; or, the frequency domain resources scheduled for information transmission are not associated frequency domain resources or third frequency domain resources; or, the frequency domain resources scheduled for information transmission are non-associated frequency domain resources.

[0012] In this implementation, when determining the switching period location, the frequency domain resources participating in the priority comparison should exclude associated frequency domain resources and / or third frequency domain resources. That is, the switching period location should be determined based on the frequency domain resource with the highest priority among the frequency domain resources involved in the handover, excluding associated frequency domain resources and / or third frequency domain resources. This helps to minimize the waste of spectrum resources and improve the reliability of communication.

[0013] In one possible implementation, when the frequency domain resource with the highest priority and scheduled for information transmission belongs to at least one first frequency domain resource, the frequency domain resource where the handover time occurs is at least one second frequency domain resource. Optionally, when the frequency domain resource with the highest priority and scheduled for information transmission belongs to at least one second frequency domain resource, the frequency domain resource where the handover time occurs is at least one first frequency domain resource.

[0014] In one possible implementation, the duration of time on frequency domain resources scheduled for information transmission that are not scheduled for information transmission is shorter than the duration of the handover time.

[0015] Optionally, the statement that the duration of time when information transmission is not scheduled on the frequency domain resources that are scheduled for information transmission is less than the duration of the handover time can also be understood as: within a time unit, the duration of time when information transmission is not scheduled on the frequency domain resources that are scheduled for information transmission is less than the duration of the handover time. Specifically, in the first time unit, the duration of time when information transmission is not scheduled on the frequency domain resources that are scheduled for information transmission is less than the duration of the handover time. In the second time unit, the duration of time when information transmission is not scheduled on the frequency domain resources that are scheduled for information transmission is less than the duration of the handover time.

[0016] In one possible implementation, at least one first frequency domain resource corresponds to a first time unit, and at least one second frequency domain resource corresponds to a second time unit. Specifically, on the frequency domain resource scheduled for information transmission, the time difference between the end position of the first time unit and the end position of the scheduled information transmission on the first time unit is a first duration, which is less than the duration of the switching time; or, on the frequency domain resource scheduled for information transmission, the time difference between the start position of the scheduled information transmission on the second time unit and the start position of the second time unit is a second duration, which is less than the duration of the switching time.

[0017] Optionally, the first time unit is earlier than the second time unit, and the first time unit is adjacent to the second time unit.

[0018] In one possible implementation, when the communication device is a terminal device or a module within a terminal device, the method further includes:

[0019] The system receives first configuration information from an access network device. This first configuration information is used to configure the priorities of at least one first frequency domain resource and at least one second frequency domain resource, wherein the frequency domain resources in the at least one first frequency domain resource and the at least one second frequency domain resource have different priorities.

[0020] In one possible implementation, when the communication device is a terminal device or a module within a terminal device, the method further includes:

[0021] The system receives second configuration information from the access network device; wherein the second configuration information is used to configure associated frequency domain resources of the frequency domain resources. The fourth frequency domain resource has a higher priority than the associated frequency domain resources of the fourth frequency domain resource, and the fourth frequency domain resource is one of at least one first frequency domain resource and at least one second frequency domain resource.

[0022] In one possible implementation, when the communication device is a terminal device or a module within a terminal device, the method further includes:

[0023] Send capability information to the access network device. This capability information is used to indicate whether the terminal device supports concurrent frequency domain resources, and / or to indicate whether the terminal device does not support concurrent frequency domain resources.

[0024] In one possible implementation, capability information is also used to indicate that one frequency domain resource among those expected to be concurrent has a higher priority than the other frequency domain resource that is an associated frequency domain resource.

[0025] In one possible implementation, when the communication device is an access network device or a module within an access network device, the method further includes:

[0026] Send first configuration information to the terminal device. The first configuration information is used to configure the priority of at least one first frequency domain resource and at least one second frequency domain resource, wherein the frequency domain resources in the at least one first frequency domain resource and the at least one second frequency domain resource have different priorities.

[0027] In one possible implementation, when the communication device is an access network device or a module within an access network device, the method further includes:

[0028] The second configuration information is sent to the terminal device. This second configuration information is used to configure the associated frequency domain resources of the frequency domain resources. The fourth frequency domain resource has a higher priority than the associated frequency domain resources of the fourth frequency domain resource, and the fourth frequency domain resource is one of at least one first frequency domain resource and at least one second frequency domain resource.

[0029] In one possible implementation, when the communication device is an access network device or a module within an access network device, the method further includes:

[0030] Receive capability information from the terminal device. This capability information indicates whether the terminal device supports concurrent frequency domain resources, and / or indicates whether the terminal device does not support concurrent frequency domain resources.

[0031] In one possible implementation, capability information is also used to indicate that one frequency domain resource among those expected to be concurrent has a higher priority than the other frequency domain resource that is an associated frequency domain resource.

[0032] In one possible implementation, at least one first frequency domain resource and at least one second frequency domain resource are frequency domain resources that the terminal device supports for switching.

[0033] Secondly, this application provides a method for determining the handover time location, executed by a communication device, which can be a terminal device or an access network device. Optionally, the communication device can also be a module within the terminal device or access network device. In this method, when switching from at least one first frequency domain resource to at least one second frequency domain resource, if the terminal device has a first radio frequency chain transmission capability, the frequency domain resource where the first handover time is located is determined according to the priority of the frequency domain resources in a frequency domain resource pair. The frequency domain resource where the first handover time is located is the frequency domain resource in a frequency domain resource pair that does not have the highest priority. The first handover time is the time of the frequency domain resource handover in a frequency domain resource pair. A frequency domain resource pair includes two frequency domain resources, and at least one first frequency domain resource handover and at least one second frequency domain resource handover include at least two frequency domain resource pairs.

[0034] In this application, the location of the switching time is determined by combining the radio frequency transmission capability of the terminal device, which has little impact on information transmission, helps to avoid resource waste, and also improves the reliability of communication.

[0035] In one possible implementation, the method further includes:

[0036] When switching from at least one first frequency domain resource to at least one second frequency domain resource, if the terminal device has a second radio frequency chain transmission capability, the frequency domain resource in which the second switching time occurs is determined from the at least one first frequency domain resource and the at least one second frequency domain resource. Specifically, the frequency domain resource in which the second switching time occurs is the frequency domain resource that is scheduled for information transmission and does not have the highest priority, and the frequency domain resource in which the second switching time occurs is either at least one first frequency domain resource or at least one second frequency domain resource. The second switching time is the time required to switch from at least one first frequency domain resource to at least one second frequency domain resource.

[0037] In one possible implementation, if the terminal device has a first radio frequency chain transmission capability, the frequency domain resource in which the first handover time occurs is determined based on the priority of a frequency domain resource over an intermediate frequency domain resource, including:

[0038] When the highest priority frequency domain resource is not located after the handover, and the terminal device has the capability to transmit via the first radio frequency chain, the frequency domain resource where the first handover time is located is determined based on the priority of a frequency domain resource to the intermediate frequency domain resource.

[0039] Optionally, the statement that the highest priority frequency domain resource is not located after the handover can be understood as: the highest priority frequency domain resource is not a frequency domain resource after the handover, or the highest priority frequency domain resource does not belong to the frequency domain resource after the handover.

[0040] In one possible implementation, the first radio chain has the capability to transmit independently of radio chains of different frequency domain resource pairs; or, the second radio chain has the capability to transmit non-independently of radio chains of different frequency domain resource pairs.

[0041] Optionally, the radio frequency chains of the aforementioned different frequency domain resource pairs can transmit independently, meaning the two radio frequency chains can transmit independently, or the two radio frequency chains can transmit independently on different frequency domain resource pairs. Conversely, the radio frequency chains of the aforementioned different frequency domain resource pairs cannot transmit independently, meaning the two radio frequency chains cannot transmit independently on different frequency domain resource pairs. Here, the two radio frequency chains are only examples and can also be understood as at least two radio frequency chains.

[0042] Thirdly, this application provides a method for determining the handover time location, executed by a communication device, which can be a terminal device or an access network device. Optionally, the communication device can also be a module within the terminal device or access network device. In this method, when handing over from at least one first frequency domain resource to at least one second frequency domain resource, the frequency domain resource where the handover time occurs is determined from the at least one first frequency domain resource and the at least one second frequency domain resource. The frequency domain resource where the handover time occurs is determined based on a target frequency domain resource among the at least one first frequency domain resource and the at least one second frequency domain resource. The target frequency domain resource is one of a plurality of highest-priority frequency domain resources among the at least one first frequency domain resource and the at least one second frequency domain resource. A portion of the highest-priority frequency domain resources is contained within the at least one first frequency domain resource, and another portion of the highest-priority frequency domain resources is contained within the at least one second frequency domain resource. For example, when the plurality of highest-priority frequency domain resources are two frequency domain resources with the highest priority, here "a portion" refers to one, and "another portion" refers to the other. Alternatively, among at least one first frequency domain resource and at least one second frequency domain resource, there is a frequency domain resource with the highest priority. The frequency domain resource where the switching time occurs is the frequency domain resource scheduled for information transmission that does not have the highest priority, and the frequency domain resource where the switching time occurs is at least one first frequency domain resource or at least one second frequency domain resource. The switching time is the time to switch from at least one first frequency domain resource to at least one second frequency domain resource.

[0043] In one possible implementation, at least one first frequency domain resource and at least one second frequency domain resource have two highest priority frequency domain resources. Specifically, one of the two highest priority frequency domain resources belongs to at least one first frequency domain resource, and the other highest priority frequency domain resource belongs to at least one second frequency domain resource.

[0044] In one possible implementation, the target frequency domain resource belongs to the frequency domain resource before the handover, or the target frequency domain resource belongs to the frequency domain resource after the handover.

[0045] Fourthly, this application provides a method for determining the handover time location, executed by a communication device, which can be a terminal device or an access network device. Optionally, the communication device can also be a module within the terminal device or access network device. In this method, when handing over from at least one first frequency domain resource to at least one second frequency domain resource, the frequency domain resource where the handover time occurs is determined based on the priorities of the highest-priority frequency domain resource among the at least one first frequency domain resource handover and the multiple sub-frequency domain resources included in the highest-priority frequency domain resource. The highest-priority frequency domain resource belongs to at least one first frequency domain resource and also belongs to at least one second frequency domain resource. The frequency domain resource where the handover time occurs is at least one first frequency domain resource or at least one second frequency domain resource. The handover time is the time from at least one first frequency domain resource to at least one second frequency domain resource.

[0046] In this application, the location of the switching time is determined based on the priority of the frequency domain resource with the highest priority and the priority of multiple sub-frequency domain resources included in the frequency domain resource with the highest priority. This can solve the problem of not being able to determine the location of the switching time when multiple frequency domain resources have the same highest priority, which is beneficial to improving the reliability of communication and has a wider applicability.

[0047] In one possible implementation, at least one first frequency domain resource and at least one second frequency domain resource have two highest priority frequency domain resources. The highest priority frequency domain resource belonging to at least one first frequency domain resource and to at least one second frequency domain resource includes: one of the two highest priority frequency domain resources belongs to at least one first frequency domain resource, and the other highest priority frequency domain resource belongs to at least one second frequency domain resource.

[0048] In one possible implementation, one of the at least one first frequency domain resource and the at least one second frequency domain resource has a highest priority frequency domain resource. The aforementioned highest priority frequency domain resource belonging to at least one first frequency domain resource and to at least one second frequency domain resource includes: the highest priority frequency domain resource belonging to at least one first frequency domain resource and to at least one second frequency domain resource.

[0049] In one possible implementation, the sub-frequency domain resources in the highest-priority frequency domain resources before the switch are different from the sub-frequency domain resources in the highest-priority frequency domain resources after the switch.

[0050] In one possible implementation, among multiple sub-frequency domain resources, the sub-frequency domain resource with larger bandwidth has a higher priority than the sub-frequency domain resource with smaller bandwidth.

[0051] Optionally, when the bandwidth of multiple sub-frequency domain resources is equal, the priority of the sub-frequency domain resource with the higher frequency point is higher than the priority of the sub-frequency domain resource with the lower frequency point, or the priority of the sub-frequency domain resource with the lower frequency point is higher than the priority of the sub-frequency domain resource with the higher frequency point.

[0052] Fifthly, this application provides a method for determining the handover time location, executed by a communication device, which can be a terminal device or an access network device. Optionally, the communication device can also be a module within the terminal device or access network device. In this method, when handing over from at least one first frequency domain resource to at least one second frequency domain resource, the frequency domain resource where the handover time occurs is determined based on the frequency domain resource with the highest priority among the at least one first frequency domain resource and the at least one second frequency domain resource that is scheduled for information transmission. The handover time is the time from at least one first frequency domain resource to at least one second frequency domain resource; the frequency domain resource where the handover time occurs is at least one first frequency domain resource or at least one second frequency domain resource.

[0053] In one possible implementation, determining the frequency domain resource where the handover time occurs, based on the frequency domain resource with the highest priority among at least one first frequency domain resource and at least one second frequency domain resource that is scheduled for information transmission, includes: determining the frequency domain resource where the handover time occurs based on the frequency domain resource with the highest priority among the frequency domain resources scheduled for information transmission among at least one first frequency domain resource and at least one second frequency domain resource. Alternatively, determining the frequency domain resource with the highest priority among the frequency domain resources among at least one first frequency domain resource and at least one second frequency domain resource whose information transmission will be interrupted by the handover time. Or, determining the frequency domain resource where the handover time occurs based on the frequency domain resource with the highest priority among at least one first frequency domain resource and at least one second frequency domain resource whose information transmission will be interrupted by the handover time.

[0054] In one possible implementation, the frequency domain resource scheduled for information transmission is neither an associated frequency domain resource nor a third frequency domain resource. Specifically, the duration of time on the third frequency domain resource that is not scheduled for information transmission is greater than or equal to the duration of the switching time.

[0055] In one possible implementation, the frequency domain resource where the aforementioned switching time is located is a frequency domain resource that is scheduled for information transmission but does not have the highest priority.

[0056] In one possible implementation, when the frequency domain resource with the highest priority and scheduled for information transmission belongs to at least one first frequency domain resource, the frequency domain resource where the handover time occurs is at least one second frequency domain resource. Alternatively, when the frequency domain resource with the highest priority and scheduled for information transmission belongs to at least one second frequency domain resource, the frequency domain resource where the handover time occurs is at least one first frequency domain resource.

[0057] In one possible implementation, at least one first frequency domain resource is the frequency domain resource before the handover, and at least one second frequency domain resource is the frequency domain resource after the handover.

[0058] In one possible implementation, the duration of time during which information transmission is not scheduled on the frequency domain resources that are scheduled for information transmission is less than the duration of the switching time.

[0059] In one possible implementation, at least one first frequency domain resource corresponds to a first time unit, and at least one second frequency domain resource corresponds to a second time unit. The first time unit is earlier than the second time unit, and the first time unit and the second time unit are adjacent. Specifically, on the frequency domain resource scheduled for information transmission, the time difference between the end position of the first time unit and the end position of the scheduled information transmission on the first time unit is a first duration; or, on the frequency domain resource scheduled for information transmission, the time difference between the start position of the scheduled information transmission on the second time unit and the start position of the second time unit is a second duration. Understandably, the first duration or the second duration is less than the handover time.

[0060] In one possible implementation, no information transmission is scheduled for the time domain resources of the first duration in the first time unit. Optionally, no information transmission is scheduled for the time domain resources of the second duration in the second time unit.

[0061] In one possible implementation, when the communication device is a terminal device or a module within a terminal device, the method further includes:

[0062] The system receives first configuration information from an access network device. This first configuration information is used to configure the priorities of at least one first frequency domain resource and at least one second frequency domain resource, wherein the frequency domain resources in the at least one first frequency domain resource and the at least one second frequency domain resource have different priorities.

[0063] In one possible implementation, when the communication device is a terminal device or a module within a terminal device, the method further includes:

[0064] The system receives second configuration information from the access network device; wherein the second configuration information is used to configure associated frequency domain resources of the frequency domain resources. The fourth frequency domain resource has a higher priority than the associated frequency domain resources of the fourth frequency domain resource, and the fourth frequency domain resource is one of at least one first frequency domain resource and at least one second frequency domain resource.

[0065] In one possible implementation, when the communication device is a terminal device or a module within a terminal device, the method further includes:

[0066] Send capability information to the access network device. This capability information is used to indicate whether the terminal device supports concurrent frequency domain resources, and / or to indicate whether the terminal device does not support concurrent frequency domain resources.

[0067] In one possible implementation, capability information is also used to indicate that one frequency domain resource among those expected to be concurrent has a higher priority than the other frequency domain resource that is an associated frequency domain resource.

[0068] In one possible implementation, when the communication device is an access network device or a module within an access network device, the method further includes:

[0069] Send first configuration information to the terminal device. The first configuration information is used to configure the priority of at least one first frequency domain resource and at least one second frequency domain resource, wherein the frequency domain resources in the at least one first frequency domain resource and the at least one second frequency domain resource have different priorities.

[0070] In one possible implementation, when the communication device is an access network device or a module within an access network device, the method further includes:

[0071] The second configuration information is sent to the terminal device. This second configuration information is used to configure the associated frequency domain resources of the frequency domain resources. The fourth frequency domain resource has a higher priority than the associated frequency domain resources of the fourth frequency domain resource, and the fourth frequency domain resource is one of at least one first frequency domain resource and at least one second frequency domain resource.

[0072] In one possible implementation, when the communication device is an access network device or a module within an access network device, the method further includes:

[0073] Receive capability information from the terminal device. This capability information indicates whether the terminal device supports concurrent frequency domain resources, and / or indicates whether the terminal device does not support concurrent frequency domain resources.

[0074] In one possible implementation, capability information is also used to indicate that one frequency domain resource among those expected to be concurrent has a higher priority than the other frequency domain resource that is an associated frequency domain resource.

[0075] In one possible implementation, at least one first frequency domain resource and at least one second frequency domain resource are frequency domain resources that the terminal device supports for switching.

[0076] Sixthly, this application provides a method for determining the handover time location, executed by a communication device, which can be a terminal device or an access network device; optionally, the communication device can also be a module within the terminal device or access network device. In this method, when handing over from at least one first frequency domain resource to at least one second frequency domain resource, a first frequency domain resource set is determined. Based on the frequency domain resource with the highest priority in the first frequency domain resource set, the frequency domain resource where the handover time occurs is determined from at least one first frequency domain resource and at least one second frequency domain resource. The frequency domain resources included in the first frequency domain resource set are those scheduled for information transmission. The frequency domain resource where the handover time occurs is the frequency domain resource scheduled for information transmission that does not have the highest priority, and the frequency domain resource where the handover time occurs is at least one first frequency domain resource or at least one second frequency domain resource. The handover time is the time from at least one first frequency domain resource to at least one second frequency domain resource.

[0077] In one possible implementation, determining the first frequency domain resource set as described above includes:

[0078] Determine the second frequency domain resource set;

[0079] The first frequency domain resource set is determined based on the second frequency domain resource set;

[0080] The second frequency domain resource set includes at least one first frequency domain resource and at least one second frequency domain resource, and the first frequency domain resource set is a subset of the second frequency domain resource set.

[0081] In one possible implementation, frequency domain resources that belong to the second frequency domain resource set but not to the first resource set are frequency domain resources that have time domain resources that have not been scheduled for information transmission.

[0082] In one possible implementation, the frequency domain resources for which time domain resources are not scheduled for information transmission include associated frequency domain resources and / or third frequency domain resources. The duration of the time on the third frequency domain resources for which information transmission is not scheduled is greater than or equal to the duration of the switching time.

[0083] In one possible implementation, the frequency domain resources scheduled for information transmission include:

[0084] The duration of time that information is not scheduled to be transmitted on the frequency domain resources that are scheduled for information transmission is less than the duration of the handover time.

[0085] In one possible implementation, at least one first frequency domain resource corresponds to a first time unit, and at least one second frequency domain resource corresponds to a second time unit, wherein the first time unit is earlier than the second time unit and the first time unit is adjacent to the second time unit.

[0086] 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 scheduled information transmission on the first time unit is the first duration; or,

[0087] In the frequency domain resources scheduled for information transmission, the time difference between the start position of the scheduled information transmission and the start position of the second time unit is the second duration.

[0088] The first or second duration is shorter than the switching time.

[0089] In one possible implementation, no information transmission is scheduled for the time domain resources of the first duration in the first time unit. Optionally, no information transmission is scheduled for the time domain resources of the second duration in the second time unit.

[0090] In one possible implementation, when the communication device is a terminal device or a module within a terminal device, the method further includes:

[0091] The system receives first configuration information from an access network device. This first configuration information is used to configure the priorities of at least one first frequency domain resource and at least one second frequency domain resource, wherein the frequency domain resources in the at least one first frequency domain resource and the at least one second frequency domain resource have different priorities.

[0092] In one possible implementation, when the communication device is a terminal device or a module within a terminal device, the method further includes:

[0093] The system receives second configuration information from the access network device; wherein the second configuration information is used to configure associated frequency domain resources of the frequency domain resources. The fourth frequency domain resource has a higher priority than the associated frequency domain resources of the fourth frequency domain resource, and the fourth frequency domain resource is one of at least one first frequency domain resource and at least one second frequency domain resource.

[0094] In one possible implementation, when the communication device is a terminal device or a module within a terminal device, the method further includes:

[0095] Send capability information to the access network device. This capability information is used to indicate whether the terminal device supports concurrent frequency domain resources, and / or to indicate whether the terminal device does not support concurrent frequency domain resources.

[0096] In one possible implementation, capability information is also used to indicate that one frequency domain resource among those expected to be concurrent has a higher priority than the other frequency domain resource that is an associated frequency domain resource.

[0097] In one possible implementation, when the communication device is an access network device or a module within an access network device, the method further includes:

[0098] Send first configuration information to the terminal device. The first configuration information is used to configure the priority of at least one first frequency domain resource and at least one second frequency domain resource, wherein the frequency domain resources in the at least one first frequency domain resource and the at least one second frequency domain resource have different priorities.

[0099] In one possible implementation, when the communication device is an access network device or a module within an access network device, the method further includes:

[0100] The second configuration information is sent to the terminal device. This second configuration information is used to configure the associated frequency domain resources of the frequency domain resources. The fourth frequency domain resource has a higher priority than the associated frequency domain resources of the fourth frequency domain resource, and the fourth frequency domain resource is one of at least one first frequency domain resource and at least one second frequency domain resource.

[0101] In one possible implementation, when the communication device is an access network device or a module within an access network device, the method further includes:

[0102] Receive capability information from the terminal device. This capability information indicates whether the terminal device supports concurrent frequency domain resources, and / or indicates whether the terminal device does not support concurrent frequency domain resources.

[0103] In one possible implementation, capability information is also used to indicate that one frequency domain resource among those expected to be concurrent has a higher priority than the other frequency domain resource that is an associated frequency domain resource.

[0104] In one possible implementation, at least one first frequency domain resource and at least one second frequency domain resource are frequency domain resources that the terminal device supports for switching.

[0105] In a seventh aspect, this application provides an apparatus for determining the location of a handover time. This apparatus can be a communication device, which may be a terminal device or an access network device. Optionally, the communication device may also be a module within the terminal device or access network device. Exemplarily, the apparatus includes: a processing unit, configured to, when switching from at least one first frequency domain resource to at least one second frequency domain resource, determine the frequency domain resource where the handover time occurs from at least one first frequency domain resource and at least one second frequency domain resource. The frequency domain resource where the handover time occurs is the frequency domain resource that does not have the highest priority among the frequency domain resources scheduled for information transmission, and the frequency domain resource where the handover time occurs is at least one first frequency domain resource or at least one second frequency domain resource. It is understood that the handover time is the time from at least one first frequency domain resource to at least one second frequency domain resource.

[0106] Optionally, the statement "The frequency domain resource where the handover time is located is not the highest priority frequency domain resource among the frequency domain resources scheduled for information transmission, and the frequency domain resource where the handover time is located is at least one first frequency domain resource or at least one second frequency domain resource" can be replaced with: "The frequency domain resource where the handover time is located satisfies the following two conditions: Condition 1: When the frequency domain resource where the handover time is located is at least one first frequency domain resource or at least one second frequency domain resource, the frequency domain resource where the handover time is located does not include the frequency domain resource with the highest priority. Condition 2: When the frequency domain resource where the handover time is located is at least one first frequency domain resource or at least one second frequency domain resource, the information transmission of the frequency domain resource where the handover time is located will be affected by the handover time (i.e., the information transmission will be interrupted or partially interrupted by the handover time)."

[0107] In one possible implementation, the frequency domain resource scheduled for information transmission is neither an associated frequency domain resource nor a third frequency domain resource. Specifically, the duration of time on the third frequency domain resource that is not scheduled for information transmission is greater than or equal to the duration of the switching time.

[0108] In one possible implementation, when the frequency domain resource with the highest priority and scheduled for information transmission belongs to at least one first frequency domain resource, the frequency domain resource where the handover time occurs is at least one second frequency domain resource. Optionally, when the frequency domain resource with the highest priority and scheduled for information transmission belongs to at least one second frequency domain resource, the frequency domain resource where the handover time occurs is at least one first frequency domain resource.

[0109] In one possible implementation, the duration of time on frequency domain resources scheduled for information transmission that are not scheduled for information transmission is shorter than the duration of the handover time.

[0110] In one possible implementation, at least one first frequency domain resource corresponds to a first time unit, and at least one second frequency domain resource corresponds to a second time unit. The first time unit is earlier than the second time unit, and the first time unit and the second time unit are adjacent. Specifically, on the frequency domain resource scheduled for information transmission, the time difference between the end position of the first time unit and the end position of the scheduled information transmission on the first time unit is a first duration; or, on the frequency domain resource scheduled for information transmission, the time difference between the start position of the scheduled information transmission on the second time unit and the start position of the second time unit is a second duration. Understandably, the aforementioned first duration or second duration is less than the handover time.

[0111] In one possible implementation, when the communication device is a terminal device or a module within a terminal device, the device further includes:

[0112] The transceiver unit is configured to receive first configuration information from the access network device. The first configuration information is used to configure the priorities of at least one first frequency domain resource and at least one second frequency domain resource, wherein the frequency domain resources in the at least one first frequency domain resource and the at least one second frequency domain resource have different priorities.

[0113] In one possible implementation, when the communication device is a terminal device or a module within a terminal device, the device further includes:

[0114] The transceiver unit is used to receive second configuration information from the access network device; wherein the second configuration information is used to configure the associated frequency domain resources of the frequency domain resources. The fourth frequency domain resource has a higher priority than the associated frequency domain resources of the fourth frequency domain resource, and the fourth frequency domain resource is one of at least one first frequency domain resource and at least one second frequency domain resource.

[0115] In one possible implementation, when the communication device is a terminal device or a module within a terminal device, the device further includes:

[0116] The transceiver unit is used to send capability information to the access network equipment. This capability information is used to indicate whether the terminal equipment supports concurrent frequency domain resources, and / or to indicate whether the terminal equipment does not support concurrent frequency domain resources.

[0117] In one possible implementation, capability information is also used to indicate that one frequency domain resource among those expected to be concurrent has a higher priority than the other frequency domain resource that is an associated frequency domain resource.

[0118] In one possible implementation, when the communication device is an access network device or a module within an access network device, the device further includes:

[0119] The transceiver unit is used to send first configuration information to the terminal device. The first configuration information is used to configure the priorities of at least one first frequency domain resource and at least one second frequency domain resource, wherein the frequency domain resources in the at least one first frequency domain resource and the at least one second frequency domain resource have different priorities.

[0120] In one possible implementation, when the communication device is an access network device or a module within an access network device, the device further includes:

[0121] The transceiver unit is used to send second configuration information to the terminal device. The second configuration information is used to configure associated frequency domain resources of the frequency domain resources. The fourth frequency domain resource has a higher priority than its associated frequency domain resources, and the fourth frequency domain resource is one of at least one first frequency domain resource and at least one second frequency domain resource.

[0122] In one possible implementation, when the communication device is an access network device or a module within an access network device, the device further includes:

[0123] The transceiver unit is used to receive capability information from the terminal device. This capability information indicates whether the terminal device supports concurrent frequency domain resources, and / or indicates whether the terminal device does not support concurrent frequency domain resources.

[0124] In one possible implementation, capability information is also used to indicate that one frequency domain resource among those expected to be concurrent has a higher priority than the other frequency domain resource that is an associated frequency domain resource.

[0125] In one possible implementation, at least one first frequency domain resource and at least one second frequency domain resource are frequency domain resources that the terminal device supports for switching.

[0126] Eighthly, this application provides an apparatus for determining the location of a handover time. This apparatus can be a communication device, which can be a terminal device or an access network device. Optionally, the communication device can also be a module within the terminal device or access network device. For example, the apparatus includes: a processing unit, configured to, when switching from at least one first frequency domain resource to at least one second frequency domain resource, if the terminal device has a first radio frequency chain transmission capability, determine the frequency domain resource where the first handover time occurs based on the priority of the frequency domain resources in a frequency domain resource pair. The frequency domain resource where the first handover time occurs is the frequency domain resource in a frequency domain resource pair that does not have the highest priority. The first handover time is the time of the frequency domain resource handover in a frequency domain resource pair. A frequency domain resource pair includes two frequency domain resources, and at least one first frequency domain resource handover and at least one second frequency domain resource handover include at least two frequency domain resource pairs.

[0127] In one possible implementation, the processing unit is further configured to, when switching from at least one first frequency domain resource to at least one second frequency domain resource, if the terminal device has a second radio frequency chain transmission capability, determine the frequency domain resource in which the second switching time occurs from the at least one first frequency domain resource and the at least one second frequency domain resource. The frequency domain resource in which the second switching time occurs is the frequency domain resource that does not have the highest priority among the frequency domain resources scheduled for information transmission, and the frequency domain resource in which the second switching time occurs is either at least one first frequency domain resource or at least one second frequency domain resource. The second switching time is the time required to switch from at least one first frequency domain resource to at least one second frequency domain resource.

[0128] In one possible implementation, if the terminal device has a first radio frequency chain transmission capability, the frequency domain resource in which the first handover time occurs is determined based on the priority of a frequency domain resource over an intermediate frequency domain resource, including:

[0129] When the highest priority frequency domain resource is not located after the handover, and the terminal device has the capability to transmit via the first radio frequency chain, the frequency domain resource where the first handover time is located is determined based on the priority of a frequency domain resource to the intermediate frequency domain resource.

[0130] In one possible implementation, the first radio chain has the capability to transmit independently of radio chains of different frequency domain resource pairs; or, the second radio chain has the capability to transmit non-independently of radio chains of different frequency domain resource pairs.

[0131] Ninthly, this application provides an apparatus for determining the location of a handover time. This apparatus can be a communication device, a terminal device, or an access network device. Optionally, the communication device can also be a module within the terminal device or access network device. Exemplarily, the apparatus includes: a processing unit configured to, when handing over from at least one first frequency domain resource to at least one second frequency domain resource, determine the frequency domain resource where the handover time occurs from at least one first frequency domain resource and at least one second frequency domain resource. The frequency domain resource where the handover time occurs is determined based on a target frequency domain resource among the at least one first frequency domain resource and at least one second frequency domain resource. The target frequency domain resource is one of a plurality of highest-priority frequency domain resources among the at least one first frequency domain resource and at least one second frequency domain resource. A portion of the plurality of highest-priority frequency domain resources is contained within at least one first frequency domain resource, and another portion of the plurality of highest-priority frequency domain resources is contained within at least one second frequency domain resource. Alternatively, among at least one first frequency domain resource and at least one second frequency domain resource, there is a frequency domain resource with the highest priority. The frequency domain resource where the handover time occurs is the one scheduled for information transmission that does not have the highest priority, and the frequency domain resource where the handover time occurs is at least one first frequency domain resource or at least one second frequency domain resource. The handover time is the time required to switch from at least one first frequency domain resource to at least one second frequency domain resource.

[0132] In one possible implementation, at least one first frequency domain resource and at least one second frequency domain resource have two highest priority frequency domain resources. Specifically, one of the two highest priority frequency domain resources belongs to at least one first frequency domain resource, and the other highest priority frequency domain resource belongs to at least one second frequency domain resource.

[0133] In one possible implementation, the target frequency domain resource belongs to the frequency domain resource before the handover, or the target frequency domain resource belongs to the frequency domain resource after the handover.

[0134] In a tenth aspect, this application provides an apparatus for determining the location of a handover time. This apparatus can be a communication device, which may be a terminal device or an access network device. Optionally, the communication device may also be a module within the terminal device or access network device. Exemplarily, the apparatus includes: a processing unit, configured to, when handing over from at least one first frequency domain resource to at least one second frequency domain resource, determine the frequency domain resource where the handover time occurs based on the priorities of the highest-priority frequency domain resource among the at least one first frequency domain resource handover and the plurality of sub-frequency domain resources included in the highest-priority frequency domain resource. The highest-priority frequency domain resource belongs to at least one first frequency domain resource and also belongs to at least one second frequency domain resource. The frequency domain resource where the handover time occurs is at least one first frequency domain resource or at least one second frequency domain resource. The handover time is the time from the at least one first frequency domain resource to the at least one second frequency domain resource.

[0135] In one possible implementation, at least one first frequency domain resource and at least one second frequency domain resource have two highest priority frequency domain resources. The highest priority frequency domain resource belonging to at least one first frequency domain resource and to at least one second frequency domain resource includes: one of the two highest priority frequency domain resources belongs to at least one first frequency domain resource, and the other highest priority frequency domain resource belongs to at least one second frequency domain resource.

[0136] In one possible implementation, one of the at least one first frequency domain resource and the at least one second frequency domain resource has a highest priority frequency domain resource. The aforementioned highest priority frequency domain resource belonging to at least one first frequency domain resource and to at least one second frequency domain resource includes: the highest priority frequency domain resource belonging to at least one first frequency domain resource and to at least one second frequency domain resource.

[0137] In one possible implementation, the sub-frequency domain resources in the highest-priority frequency domain resources before the switch are different from the sub-frequency domain resources in the highest-priority frequency domain resources after the switch.

[0138] In one possible implementation, among multiple sub-frequency domain resources, the sub-frequency domain resource with larger bandwidth has a higher priority than the sub-frequency domain resource with smaller bandwidth.

[0139] Optionally, when the bandwidth of multiple sub-frequency domain resources is equal, the priority of the sub-frequency domain resource with the higher frequency point is higher than the priority of the sub-frequency domain resource with the lower frequency point, or the priority of the sub-frequency domain resource with the lower frequency point is higher than the priority of the sub-frequency domain resource with the higher frequency point.

[0140] Eleventhly, this application provides an apparatus for determining the location of a handover time. This apparatus can be a communication device, which may be a terminal device or an access network device. Optionally, the communication device may also be a module within the terminal device or access network device. Exemplarily, the apparatus includes: a processing unit, configured to, when switching from at least one first frequency domain resource to at least one second frequency domain resource, determine the frequency domain resource where the handover time occurs, based on the frequency domain resource with the highest priority among the at least one first frequency domain resource and the at least one second frequency domain resource, and which is scheduled for information transmission. Wherein, the handover time is the time from the at least one first frequency domain resource to the at least one second frequency domain resource; the frequency domain resource where the handover time occurs is at least one first frequency domain resource or at least one second frequency domain resource.

[0141] In one possible implementation, determining the frequency domain resource where the handover time occurs, based on the frequency domain resource with the highest priority among at least one first frequency domain resource and at least one second frequency domain resource that is scheduled for information transmission, includes: determining the frequency domain resource where the handover time occurs based on the frequency domain resource with the highest priority among the frequency domain resources scheduled for information transmission among at least one first frequency domain resource and at least one second frequency domain resource. Alternatively, determining the frequency domain resource with the highest priority among the frequency domain resources among at least one first frequency domain resource and at least one second frequency domain resource whose information transmission will be interrupted by the handover time. Or, determining the frequency domain resource where the handover time occurs based on the frequency domain resource with the highest priority among at least one first frequency domain resource and at least one second frequency domain resource whose information transmission will be interrupted by the handover time.

[0142] In one possible implementation, the frequency domain resource scheduled for information transmission is neither an associated frequency domain resource nor a third frequency domain resource. Specifically, the duration of time on the third frequency domain resource that is not scheduled for information transmission is greater than or equal to the duration of the switching time.

[0143] In one possible implementation, the frequency domain resource where the aforementioned switching time is located is a frequency domain resource that is scheduled for information transmission but does not have the highest priority.

[0144] In one possible implementation, when the frequency domain resource with the highest priority and scheduled for information transmission belongs to at least one first frequency domain resource, the frequency domain resource where the handover time occurs is at least one second frequency domain resource. Alternatively, when the frequency domain resource with the highest priority and scheduled for information transmission belongs to at least one second frequency domain resource, the frequency domain resource where the handover time occurs is at least one first frequency domain resource.

[0145] In one possible implementation, at least one first frequency domain resource is the frequency domain resource before the handover, and at least one second frequency domain resource is the frequency domain resource after the handover.

[0146] In one possible implementation, the duration of time during which information transmission is not scheduled on the frequency domain resources that are scheduled for information transmission is less than the duration of the switching time.

[0147] In one possible implementation, at least one first frequency domain resource corresponds to a first time unit, and at least one second frequency domain resource corresponds to a second time unit. The first time unit is earlier than the second time unit, and the first time unit and the second time unit are adjacent. Specifically, on the frequency domain resource scheduled for information transmission, the time difference between the end position of the first time unit and the end position of the scheduled information transmission on the first time unit is a first duration; or, on the frequency domain resource scheduled for information transmission, the time difference between the start position of the scheduled information transmission on the second time unit and the start position of the second time unit is a second duration. Understandably, the first duration or the second duration is less than the handover time.

[0148] In one possible implementation, no information transmission is scheduled for the time domain resources of the first duration in the first time unit. Optionally, no information transmission is scheduled for the time domain resources of the second duration in the second time unit.

[0149] In one possible implementation, when the communication device is a terminal device or a module within a terminal device, the device further includes:

[0150] The transceiver unit is configured to receive first configuration information from the access network device. The first configuration information is used to configure the priorities of at least one first frequency domain resource and at least one second frequency domain resource, wherein the frequency domain resources in the at least one first frequency domain resource and the at least one second frequency domain resource have different priorities.

[0151] In one possible implementation, when the communication device is a terminal device or a module within a terminal device, the device further includes:

[0152] The transceiver unit is used to receive second configuration information from the access network device; wherein the second configuration information is used to configure the associated frequency domain resources of the frequency domain resources. The fourth frequency domain resource has a higher priority than the associated frequency domain resources of the fourth frequency domain resource, and the fourth frequency domain resource is one of at least one first frequency domain resource and at least one second frequency domain resource.

[0153] In one possible implementation, when the communication device is a terminal device or a module within a terminal device, the device further includes:

[0154] The transceiver unit is used to send capability information to the access network equipment. This capability information is used to indicate whether the terminal equipment supports concurrent frequency domain resources, and / or to indicate whether the terminal equipment does not support concurrent frequency domain resources.

[0155] In one possible implementation, capability information is also used to indicate that one frequency domain resource among those expected to be concurrent has a higher priority than the other frequency domain resource that is an associated frequency domain resource.

[0156] In one possible implementation, when the communication device is an access network device or a module within an access network device, the device further includes:

[0157] The transceiver unit is used to send first configuration information to the terminal device. The first configuration information is used to configure the priorities of at least one first frequency domain resource and at least one second frequency domain resource, wherein the frequency domain resources in the at least one first frequency domain resource and the at least one second frequency domain resource have different priorities.

[0158] In one possible implementation, when the communication device is an access network device or a module within an access network device, the device further includes:

[0159] The transceiver unit is used to send second configuration information to the terminal device. The second configuration information is used to configure associated frequency domain resources of the frequency domain resources. The fourth frequency domain resource has a higher priority than its associated frequency domain resources, and the fourth frequency domain resource is one of at least one first frequency domain resource and at least one second frequency domain resource.

[0160] In one possible implementation, when the communication device is an access network device or a module within an access network device, the device further includes:

[0161] The transceiver unit is used to receive capability information from the terminal device. This capability information indicates whether the terminal device supports concurrent frequency domain resources, and / or indicates whether the terminal device does not support concurrent frequency domain resources.

[0162] In one possible implementation, capability information is also used to indicate that one frequency domain resource among those expected to be concurrent has a higher priority than the other frequency domain resource that is an associated frequency domain resource.

[0163] In one possible implementation, at least one first frequency domain resource and at least one second frequency domain resource are frequency domain resources that the terminal device supports for switching.

[0164] In a twelfth aspect, this application provides an apparatus for determining the location of a handover time. This apparatus can be a communication device, which may be a terminal device or an access network device. Optionally, the communication device may also be a module within the terminal device or access network device. Exemplarily, the apparatus includes: a processing unit, configured to determine a first set of frequency domain resources when handing over from at least one first frequency domain resource to at least one second frequency domain resource. Based on the frequency domain resource with the highest priority in the first set of frequency domain resources, the processing unit determines the frequency domain resource where the handover time occurs from the at least one first frequency domain resource and the at least one second frequency domain resource. The frequency domain resources included in the first set of frequency domain resources are those scheduled for information transmission. The frequency domain resource where the handover time occurs is the frequency domain resource scheduled for information transmission that does not have the highest priority, and the frequency domain resource where the handover time occurs is at least one first frequency domain resource or at least one second frequency domain resource. The handover time is the time from at least one first frequency domain resource to at least one second frequency domain resource.

[0165] In one possible implementation, determining the first frequency domain resource set as described above includes:

[0166] Determine the second frequency domain resource set;

[0167] The first frequency domain resource set is determined based on the second frequency domain resource set;

[0168] The second frequency domain resource set includes at least one first frequency domain resource and at least one second frequency domain resource, and the first frequency domain resource set is a subset of the second frequency domain resource set.

[0169] In one possible implementation, frequency domain resources that belong to the second frequency domain resource set but not to the first resource set are frequency domain resources that have time domain resources that have not been scheduled for information transmission.

[0170] In one possible implementation, the frequency domain resources for which time domain resources are not scheduled for information transmission include associated frequency domain resources and / or third frequency domain resources. The duration of the time on the third frequency domain resources for which information transmission is not scheduled is greater than or equal to the duration of the switching time.

[0171] In one possible implementation, the frequency domain resources scheduled for information transmission include:

[0172] The duration of time that information is not scheduled to be transmitted on the frequency domain resources that are scheduled for information transmission is less than the duration of the handover time.

[0173] In one possible implementation, at least one first frequency domain resource corresponds to a first time unit, and at least one second frequency domain resource corresponds to a second time unit, wherein the first time unit is earlier than the second time unit and the first time unit is adjacent to the second time unit.

[0174] 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 scheduled information transmission on the first time unit is the first duration; or,

[0175] In the frequency domain resources scheduled for information transmission, the time difference between the start position of the scheduled information transmission and the start position of the second time unit is the second duration.

[0176] The first or second duration is shorter than the switching time.

[0177] In one possible implementation, no information transmission is scheduled for the time domain resources of the first duration in the first time unit. Optionally, no information transmission is scheduled for the time domain resources of the second duration in the second time unit.

[0178] In one possible implementation, when the communication device is a terminal device or a module within a terminal device, the device further includes:

[0179] The transceiver unit is configured to receive first configuration information from the access network device. The first configuration information is used to configure the priorities of at least one first frequency domain resource and at least one second frequency domain resource, wherein the frequency domain resources in the at least one first frequency domain resource and the at least one second frequency domain resource have different priorities.

[0180] In one possible implementation, when the communication device is a terminal device or a module within a terminal device, the device further includes:

[0181] The transceiver unit is used to receive second configuration information from the access network device; wherein the second configuration information is used to configure the associated frequency domain resources of the frequency domain resources. The fourth frequency domain resource has a higher priority than the associated frequency domain resources of the fourth frequency domain resource, and the fourth frequency domain resource is one of at least one first frequency domain resource and at least one second frequency domain resource.

[0182] In one possible implementation, when the communication device is a terminal device or a module within a terminal device, the device further includes:

[0183] The transceiver unit is used to send capability information to the access network equipment. This capability information is used to indicate whether the terminal equipment supports concurrent frequency domain resources, and / or to indicate whether the terminal equipment does not support concurrent frequency domain resources.

[0184] In one possible implementation, capability information is also used to indicate that one frequency domain resource among those expected to be concurrent has a higher priority than the other frequency domain resource that is an associated frequency domain resource.

[0185] In one possible implementation, when the communication device is an access network device or a module within an access network device, the device further includes:

[0186] The transceiver unit is used to send first configuration information to the terminal device. The first configuration information is used to configure the priorities of at least one first frequency domain resource and at least one second frequency domain resource, wherein the frequency domain resources in the at least one first frequency domain resource and the at least one second frequency domain resource have different priorities.

[0187] In one possible implementation, when the communication device is an access network device or a module within an access network device, the device further includes:

[0188] The transceiver unit is used to send second configuration information to the terminal device. The second configuration information is used to configure associated frequency domain resources of the frequency domain resources. The fourth frequency domain resource has a higher priority than its associated frequency domain resources, and the fourth frequency domain resource is one of at least one first frequency domain resource and at least one second frequency domain resource.

[0189] In one possible implementation, when the communication device is an access network device or a module within an access network device, the device further includes:

[0190] The transceiver unit is used to receive capability information from the terminal device. This capability information indicates whether the terminal device supports concurrent frequency domain resources, and / or indicates whether the terminal device does not support concurrent frequency domain resources.

[0191] In one possible implementation, capability information is also used to indicate that one frequency domain resource among those expected to be concurrent has a higher priority than the other frequency domain resource that is an associated frequency domain resource.

[0192] In one possible implementation, at least one first frequency domain resource and at least one second frequency domain resource are frequency domain resources that the terminal device supports for switching.

[0193] In a thirteenth aspect, this application provides a communication device including a processor, a transceiver, and a memory, wherein the processor, transceiver, and memory are coupled together, and a computer program is stored in the memory; the processor and transceiver are used to invoke the computer program in the memory, causing the communication device to perform any of the methods described in the first to sixth aspects.

[0194] In one possible design, the communication device can be a chip that implements the above method or a device containing a chip.

[0195] In a fourteenth aspect, this application provides a communication device including a processor and an interface circuit. The interface circuit is used to receive signals from other communication devices outside the communication device and transmit them to the processor, or to send signals from the processor to other communication devices outside the communication device. The processor is used to implement any of the methods in the first to sixth aspects through logic circuits or execution code instructions.

[0196] In a fifteenth aspect, this application provides a computer-readable storage medium storing a computer program or instructions that, when executed by a computer, implement any of the methods described in the first to sixth aspects.

[0197] In a sixteenth aspect, this application provides a computer program product that, when read and executed by a computer, causes the computer to perform any of the methods in the first to sixth aspects. Attached Figure Description

[0198] Figure 1 This is a schematic diagram of the network architecture of a communication system;

[0199] Figure 2 This is a schematic diagram illustrating uplink RF chain switching scenarios for co-located and heterogeneous sites provided in the embodiments of this application;

[0200] Figure 3 This is a schematic diagram of an uplink radio frequency chain switching scenario provided in an embodiment of this application;

[0201] Figure 4 This is a schematic diagram of another scenario for uplink radio frequency chain switching provided in the embodiments of this application;

[0202] Figure 5 This is a schematic diagram of another scenario for uplink radio frequency chain switching provided in the embodiments of this application;

[0203] Figure 6 This is a schematic diagram of an information transmission scenario provided in an embodiment of this application;

[0204] Figure 7 This is another schematic diagram illustrating information transmission scenarios provided in the embodiments of this application;

[0205] Figure 8 This is another schematic diagram illustrating information transmission scenarios provided in the embodiments of this application;

[0206] Figure 9 This is another schematic diagram illustrating information transmission scenarios provided in the embodiments of this application;

[0207] Figure 10This is a schematic diagram of the first and second time units provided in the embodiments of this application;

[0208] Figure 11 This is another schematic diagram illustrating information transmission scenarios provided in the embodiments of this application;

[0209] Figure 12 This is another schematic diagram illustrating information transmission scenarios provided in the embodiments of this application;

[0210] Figure 13 This is another schematic diagram illustrating information transmission scenarios provided in the embodiments of this application;

[0211] Figure 14 This is another schematic diagram illustrating information transmission scenarios provided in the embodiments of this application;

[0212] Figure 15 This is a flowchart illustrating the process of determining the switching time position provided in an embodiment of this application;

[0213] Figure 16 This is a schematic diagram of another scenario for uplink radio frequency chain switching provided in the embodiments of this application;

[0214] Figure 17 This is a schematic diagram of another scenario for uplink radio frequency chain switching provided in the embodiments of this application;

[0215] Figure 18 This is another schematic diagram of the process provided in the embodiments of this application;

[0216] Figure 19 This is another flowchart illustrating the determination of the switching time position provided in an embodiment of this application;

[0217] Figure 20 This is a schematic diagram of another scenario for uplink radio frequency chain switching provided in the embodiments of this application;

[0218] Figure 21 This is another flowchart illustrating the determination of the switching time position provided in an embodiment of this application;

[0219] Figure 22 This is a schematic diagram of another scenario for uplink radio frequency chain switching provided in the embodiments of this application;

[0220] Figure 23 This is another flowchart illustrating the determination of the switching time position provided in an embodiment of this application;

[0221] Figure 24 This is a schematic diagram of another scenario for uplink radio frequency chain switching provided in the embodiments of this application;

[0222] Figure 25 This is a schematic diagram of another scenario for uplink radio frequency chain switching provided in the embodiments of this application;

[0223] Figure 26 This is a schematic diagram of another scenario for uplink radio frequency chain switching provided in the embodiments of this application;

[0224] Figure 27 This is a schematic diagram of the structure of a possible communication device provided in the embodiments of this application;

[0225] Figure 28 This is a schematic diagram of the structure of a possible communication device provided in the embodiments of this application. Detailed Implementation

[0226] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0227] In the description of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. "And / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. A and B can be single or multiple. Furthermore, "at least one" refers to one or more, and "multiple" refers to two or more. "One or more of the following:...", "at least one of...", and similar expressions refer to any combination of the listed items. For example, "one or more of the following: A, B, C" can represent: A alone, B alone, C alone, A and B simultaneously, B and C simultaneously, A and C simultaneously, and A, B, and C simultaneously. A, B, and C can be single or multiple. The terms "first," "second," etc., do not limit the quantity or order of execution, and "first," "second," etc., do not necessarily imply differences.

[0228] In this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or illustration. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0229] It should be understood that the term "embodiment" used throughout this specification means that a specific feature, structure, or characteristic related to an embodiment is included in at least one embodiment of this application. Therefore, various embodiments throughout this specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0230] The technical solutions of the embodiments of this application can be applied to various communication systems, such as: long term evolution (LTE) system, wireless-fidelity (WiFi) system, worldwide interoperability for microwave access (WiMAX) communication system, 5th generation (5G) system or new radio (NR) and future communication systems, etc., without limitation.

[0231] Please see Figure 1 , Figure 1 This is a schematic diagram of a network architecture for a communication system. For example... Figure 1 As shown, the communication system 10 includes a radio access network (RAN) 100 and a core network (CN) 200. Optionally, the communication system 10 may also include an Internet 300. The RAN 100 includes at least one RAN node (e.g., Figure 1 110a and 110b (collectively referred to as 110) and at least one terminal device (such as Figure 1 RAN 100, denoted as RAN 120a-120j, is collectively referred to as RAN 120. RAN 100 may also include other RAN nodes, such as wireless relay equipment and / or wireless backhaul equipment. Figure 1 (Not shown in the image). Terminal device 120 is connected to RAN node 110 wirelessly. RAN node 110 is connected to core network 200 wirelessly or via wired connection. The core network equipment in core network 200 and RAN node 110 in RAN 100 can be different physical devices, or they can be the same physical device integrating core network logical functions and radio access network logical functions.

[0232] RAN 100 can be a cellular system related to the 3rd Generation Partnership Project (3GPP), such as 4G, 5G mobile communication systems, or future-oriented evolution systems (such as 6G mobile communication systems). RAN 100 can also be an open access network (O-RAN or ORAN), a cloud radio access network (CRAN), or a wireless fidelity (WiFi) system. RAN 100 can also be a communication system that integrates two or more of the above systems.

[0233] RAN node 110, sometimes also referred to as access network equipment, radio access network equipment, RAN entity, or access node, constitutes part of the communication system and is used to help terminal equipment achieve wireless access. Multiple RAN nodes 110 in communication system 10 can be of the same type or different types. In some scenarios, the roles of RAN node 110 and terminal equipment 120 are relative, for example... Figure 1 Network element 120i can be a helicopter or a drone, and it can be configured as a mobile base station. For terminal devices 120j that access RAN 100 through network element 120i, network element 120i is a base station; however, for base station 110a, network element 120i is a terminal device. RAN node 110 and terminal device 120 are sometimes referred to as communication devices, for example... Figure 1 Network elements 110a and 110b can be understood as communication devices with base station functions, while network elements 120a-120j can be understood as communication devices with terminal equipment functions.

[0234] In one possible scenario, a RAN node can be a base station, an evolved NodeB (eNodeB), an access point (AP), a transmission reception point (TRP), a next-generation NodeB (gNB), a next-generation base station in a 6th-generation (6G) mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system, etc. A RAN node can also be a macro base station (such as...) Figure 1 110a), micro base stations or indoor stations (such as Figure 1 The RAN node can be a relay node or donor node (as described in section 110b), or a wireless controller in a CRAN scenario. Optionally, the RAN node can also be a server, wearable device, vehicle, or in-vehicle equipment. For example, the access network equipment in vehicle-to-everything (V2X) technology can be a roadside unit (RSU). All or part of the functions of the RAN node in this application can also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (e.g., a cloud platform). The RAN node in this application can also be a logical node, logical module, or software capable of implementing all or part of the RAN node functions.

[0235] In another possible scenario, multiple RAN nodes collaborate to assist terminal devices in achieving wireless access, with different RAN nodes each implementing a portion of the base station's functions. For example, RAN nodes can be central units (CUs), distributed units (DUs), CU-control plane (CPs), CU-user plane (UPs), or radio units (RUs), etc. CUs and DUs can be set up separately or included in the same network element, such as a baseband unit (BBU). RUs can be included in radio frequency equipment or radio frequency units, such as remote radio units (RRUs), active antenna units (AAUs), or remote radio heads (RRHs).

[0236] In different systems, CU (or CU-CP and CU-UP), DU, or RU may have different names, but those skilled in the art will understand their meaning. For example, in an ORAN system, CU can also be called O-CU (open CU), DU can also be called O-DU, CU-CP can also be called O-CU-CP, CU-UP can also be called O-CU-UP, and RU can also be called O-RU. For ease of description, this application uses CU, CU-CP, CU-UP, DU, and RU as examples. Any of the units among CU (or CU-CP, CU-UP), DU, and RU in this application can be implemented through software modules, hardware modules, or a combination of software and hardware modules.

[0237] Terminal devices, also known as terminals, can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), the Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grids, smart furniture, smart offices, smart wearables, smart transportation, and smart cities. Terminal devices include those that provide voice and / or data connectivity to users; for example, they may include handheld devices with wireless connectivity or processing devices connected to a wireless modem. This terminal device can communicate with the core network via a wireless access network. It can include user equipment (UE), wireless terminal equipment, mobile terminal equipment, device-to-device (D2D) terminal equipment, vehicle-to-everything (V2X) terminal equipment, machine-to-machine / machine-type communications (M2M / MTC) terminal equipment, Internet of Things (IoT) terminal equipment, subscriber units, subscriber stations, mobile stations, remote stations, access points (APs), remote terminals, access terminals, user terminals, user agents, or user equipment. For example, it can include mobile phones (or "cellular" phones), computers with mobile terminal devices, portable, pocket-sized, handheld, or computer-embedded mobile devices, etc. Examples include personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), and other devices. It can also include limited devices, such as those with low power consumption, limited storage capacity, or limited computing power. Furthermore, the terminal device can also be an in-vehicle terminal, such as a telematics box (T-Box), domain controller (DC), multi-domain controller (MDC), or onboard unit (OBU) integrated into a vehicle.Optionally, the terminal device can also be a mobile phone, tablet computer, computer with wireless transceiver function, wearable device, vehicle, drone, helicopter, airplane, ship, robot, robotic arm, smart home device, etc. The embodiments of this application do not limit the form of the terminal device.

[0238] It should be noted that the terminal device in this application can support three or more bands (or carriers). The following description mainly uses the switching between three or four bands as an example.

[0239] It should be understood that the terminal device in this application embodiment can be any of the above-mentioned devices or chips, and no specific limitation is made here. Whether as a device or 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 description.

[0240] It should be understood that the apparatus used to implement the functions of the access network device in the embodiments of this application can be the access network device itself, or it can be an apparatus that supports the access network device in implementing the functions, such as a chip system or a combination of devices or components that can implement the functions of the access network device. This apparatus can be installed in the access network device. In the embodiments of this application, the chip system can be composed of chips, or it can include chips and other discrete devices. In this embodiment and subsequent embodiments, only the access network device is used as an example for description.

[0241] It's important to note that in 5G NR, access network equipment has high power for downlink transmission, achieving excellent downlink coverage. However, due to the limited transmit power of terminal devices, uplink coverage may be limited during uplink transmission. To address this limited uplink coverage issue in 5G NR, the industry has proposed SUL (Supply-Use-Low) technology. This involves configuring an additional SUL carrier outside the UL carrier to assist uplink transmission. Since SUL uses lower frequency bands, such as the 1.8GHz band, signal loss is lower, thus improving uplink coverage and capacity. Terminal devices can dynamically select the transmission link between NUL (Near-Use-Low) and SUL, but at any given time, a terminal device can only select one to transmit on; it cannot transmit on two uplink links simultaneously. This is called the handover between SUL and NUL, which is a two-band handover.

[0242] For example, please see Figure 2 , Figure 2 This is a schematic diagram illustrating uplink RF chain switching scenarios for co-located and disparate sites provided in an embodiment of this application. For example... Figure 2(a) shows the uplink RF link handover scenario at a co-located site, and (b) shows the uplink RF link handover scenario at a different site. In this scenario, the terminal device can support two uplink carriers (UL carriers) (e.g., carrier 001 and carrier 002, where carrier 001 can be an NUL carrier and carrier 002 can be an SUL carrier), and the terminal device can perform uplink RF link handover on these two uplink carriers.

[0243] With the development of communication technology, terminal devices may support three or more bands and be able to perform uplink RF chain switching on at least three bands. A band may contain at least one carrier. The at least three uplink carriers supported by the terminal device can be carriers in a SUL (Supply-Use Uplink) scenario. For example, among the at least three uplink carriers, there may be one NUL carrier (e.g., a primary uplink carrier, primary UL carrier, or secondary uplink carrier) and at least one SUL carrier; or, among the at least three uplink carriers, there may be at least one NUL carrier (e.g., a primary uplink carrier, secondary uplink carrier) and one SUL carrier. Optionally, the at least three uplink carriers supported by the terminal device may also be carriers in a carrier aggregation (CA) scenario. For example, one primary component carrier (PCC) and at least one secondary component carrier (SCC), without limitation.

[0244] It should be noted that supporting uplink radio chain switching on at least three uplink carriers can be understood as enabling switching of the radio chain between any two uplink carriers. For example, if a terminal device supports uplink radio chain switching on carriers A, B, and C, then the terminal device can switch the uplink radio chain between carriers A and B, between carriers A and C, and between carriers B and C.

[0245] The relevant technical features involved in the embodiments of this application are explained below. It should be noted that these explanations are for the purpose of making the embodiments of this application easier to understand, and should not be regarded as a limitation on the scope of protection claimed by this application.

[0246] 1. Uplink Tx Switch

[0247] Uplink RF chain switching refers to the process by which a terminal device switches its RF chain from one band (or carrier) to another to support uplink transmission on that new band (or carrier). The time during which this uplink RF chain switching occurs is called the uplink RF chain switching period, also known as the switching period, switching time, or switching gap, etc., without limitation. The switching period is used for RF chain tuning or retuning. The switching period location refers to the band or carrier in which the switching period occurs.

[0248] It should be noted that a band (carrier) can have one radio frequency chain transmission (i.e., 1Tx or 1T), or a band (or carrier) can have two radio frequency chains transmission simultaneously (i.e., 2Tx or 2T). For example, one radio frequency chain transmission on band A can be represented as A1T, and two radio frequency chains transmission on band A can be represented as A2T.

[0249] For a terminal device, it can support up to two radio frequency chains at the same time. One or two radio frequency chains can be transmitted through one port. That is, 1Tx can occur on one port, or 2Tx can occur on one port. The specific configuration is determined according to the actual configuration and is not limited here.

[0250] Optionally, the duration between the start and end positions of the handover time can be described as the handover time duration. For example, the handover time duration can be reported by the terminal device through capability information, or predefined by a protocol, or preconfigured, or indicated by the access network device to the terminal device, or indicated by the access network device to the terminal device based on the terminal device's capability information; there is no limitation on this. Generally, different frequency bands can correspond to different handover time durations.

[0251] For example, taking a handover time occupying 4 symbols as an example, the corresponding handover time duration is 140µs, and the subcarrier spacing of the frequency domain resources is 30kHz. Optionally, the handover time duration can also be any value among 35µs, 210µs, or 280µs. Optionally, the handover time duration is not limited to the values ​​listed above; it can also be other values, which are not restricted here.

[0252] 2. CA

[0253] CA (Carrier Aspect) aggregates at least two component carriers (CCs) (also known as carrier units) together to support greater transmission bandwidth. The cell corresponding to the PCC is the primary cell (Pcell), which is the cell where the terminal equipment initially establishes a connection; or the cell where radio resource control (RRC) connection reconstruction is performed; or the cell designated during handover. The Pcell is responsible for RRC communication with the UE. The cell corresponding to the SCC is the secondary cell (Scell), which is added / modified / released during RRC connection reconfiguration to provide additional radio resources.

[0254] 3. Transmitter (TX)

[0255] TX is a physical concept, also referred to as a radio frequency (RF) transmission channel, RF chain, or transmission chain. In this application, the transmission channel can operate in, but is not limited to, the following manner: The transmission channel receives baseband signals from a baseband chip, performs RF processing (such as up-conversion, amplification, and filtering) on ​​the baseband signals to obtain RF signals, and finally radiates the RF signals into space through an antenna. Specifically, the transmission channel may include electronic devices such as antenna switches, antenna tuners, low-noise amplifiers (LNAs), power amplifiers (PAs), mixers, local oscillators (LOs), and filters, which can be integrated into one or more chips as needed. Antennas can sometimes be considered part of the transmission channel. In this application, all are simply referred to as the RF chain. Optionally, the RF chain in this application can also be replaced with Tx, T, antenna, RF, transmit channel, transmit port, number of RF chains, number of transmission layers, maximum number of transmission layers, maximum number of supported transmission layers, receive channel, or any combination thereof. Optionally, the RF chain switching in this application can be replaced with uplink RF chain switching or dynamic uplink RF chain switching.

[0256] 4. Frequency band

[0257] Originally, "band" refers to the frequency range of electromagnetic waves; in the field of communications, it refers to the electromagnetic wave frequency band that can be used for communication. Generally, a band includes one or more carriers. In this application, the terminal device reports one or more bands to the access network device, and the access network device selects one or more carriers from the aforementioned one or more bands and configures them for the terminal device. The terminal device then uses the carriers configured by the access network device for communication.

[0258] 5. Band pair

[0259] A band pair refers to a combination of two frequency bands that can perform uplink RF chain switching. Generally, a band pair contains two bands, meaning that these two bands can perform uplink RF chain switching. For example, a band pair of {A, B} means that the band pair contains two frequency bands, band A and band B, and band A and band B can perform uplink RF chain switching. That is, the uplink RF chain on band A can switch to band B, and the uplink RF chain on band B can switch to band A.

[0260] 6. Associated band

[0261] Associated bands are used to resolve transmission ambiguity. When two radio chains are currently on bands A and B respectively, and the next transmission is a port 1 transmission on band C, if the RRC signaling `uplinkTxSwitching-DualUL-TxState` indicates 1T, then one radio chain will be switched to band C. In this case, since it is unclear whether the radio chain switching is on band A or band B, the 3GPP standard defines associated bands. That is, for any band, its associated band is configured via RRC signaling. When scheduling a port 1 transmission on that band, if the RRC signaling `uplinkTxSwitching-DualUL-TxState` indicates 1T, then in addition to the port 1 transmission on that band, there is also a port 1T transmission on its associated band.

[0262] For each band (i.e., the transmission band) in a three-band, four-band, or more-band handover, there is a corresponding associated band. In addition to one RF chain on the transmission band, the other RF chain is always on its corresponding associated band. That is, when the handover involves a 2T to 1T switch, the associated band needs to be identified to determine the frequency domain resource pair.

[0263] For example, taking band A, band B, band C, and band D as examples, the associated band for each transmission band can be configured such that the associated band for band A is band B, the associated band for band B is band A, the associated band for band C is band A, and the associated band for band D is band C. For instance, when port 1 transmission of band C is scheduled, if the radio chain in the previous slot was 1T each on band A and band B, given that band A is the associated band of band C, the radio chain on band B is switched to band C, while the radio chain on band A remains unchanged, thus making the radio chain in the current slot 1T each on band C and band A. For example, when port 1 transmission of band D is scheduled, if the radio chain in the previous slot was 1T each on band A and B1T, given that band C is an associated band of band D, then the radio chain on band A is switched to band D, and the radio chain on band B is switched to band C; or, the radio chain on band B is switched to band D, and the radio chain on band A is switched to band C, thus making the radio chain in the current slot 1T each on band C and band D. The above definition of associated bands assumes that simultaneous transmission on two bands can be supported by the terminal device.

[0264] Understandably, in the following application, band A can be abbreviated as A, band B as B, band C as C, and band D as D.

[0265] It should be noted that during handover between two bands, access network devices can use a configuration index (CC index) to indicate which band the handover period should be placed on, i.e., indicating the handover period location. With the development of communication technology, terminal devices may support three or more uplink carriers, thus potentially involving handovers between three or more bands. When handovers involve three or more bands, the method of using the CC index to indicate the handover period location is no longer applicable. Therefore, a new scheme is needed to determine the exact band where the handover period should be located to improve communication reliability.

[0266] In some implementations, when switching between three or more bands, a criterion is proposed to determine which band or carrier the switching period location should be on. For ease of distinction, this will be referred to as Criterion 1 below. Criterion 1 is described as follows: For all bands involved in a handover, the UE determines the switching period location on either the switching-from band(s) or the switching-to band(s) that is involved in the UL Txswitching and is not with the highest priority band.

[0267] The above method of determining the highest priority band from all bands involved in a handover and using the switching-from band(s) or switching-to band(s) where the highest priority band is not located as the switching periodlocation method is simple, but it can lead to reduced spectral efficiency in some specific handover scenarios.

[0268] For example, for such Figure 3The switching scenario shown is A+C→B. In this application, "→" indicates a switch, A and C are the bands before the switch, and B is the band after the switch. If the scheduled band B is a 1-port transmission and the uplinkTxSwitching-DualUL-TxState is configured as 1T, then the associated band D of band B needs to be considered for switching, i.e., the frequency band pairs involved are band pair 1: A→B, band pair 2: C→D. If the priority is configured as follows: the priority of band D is higher than the priority of band A, the priority of band A is higher than the priority of band C, and the priority of band C is higher than the priority of band B (simply put, D>A>C>B), then according to the definition of criterion 1, since band D has the highest priority, the switch from band (i.e., band A and C) is selected as the switching period location. In this case, since the information transmission on the higher-priority bands A and C is interrupted, the information transmission on the lowest-priority band B is protected, and band D, which does not transmit data at all, is also protected. This is because band D is only an associated band and does not transmit scheduling information, so its spectral efficiency is low.

[0269] For example, regarding such as Figure 4 The switching scenario shown is A 2T→B. If the scheduled band B is a 1-port transmission and uplinkTxSwitching-DualUL-TxState is configured as 1T, then the associated band D of band B also needs to be considered for switching. That is, the frequency band pairs involved are band pair 1: A→B and band pair 2: A→D. If the priority is configured as D>A>B, then according to the definition of criterion 1, since band D has the highest priority, the switch from band (i.e., band A) is selected as the switching period location. In this case, the information transmission on the higher-priority band A is interrupted, while the information transmission on the lowest-priority band B is protected, and band D, which does not transmit data at all, is also protected, thus resulting in low spectral efficiency.

[0270] In this application, the priority of frequency domain resources can be used to determine the location of the switching time. The specific determination method can be found in the descriptions of the subsequent embodiments, and will not be repeated here. Optionally, the priority of frequency domain resources can also be understood as any of the following descriptions: the transmission priority of information on frequency domain resources, or the priority of transmission on protection frequency domain resources, or the priority of not setting the switching time on frequency domain resources, or the priority of frequency domain resources where the switching time is not located.

[0271] For example, for such as Figure 5 The switching scenario shown is: band pair 1: A→B, band pair 2: C→D. If the priority is configured as A>B>D>C (or A>D>B>C), then according to the definition of criterion 1, since band A has the highest priority, the switch to bands (i.e., bands B and D) is chosen as the switching period location. In this case, the information transmission of band D, which has a higher priority, is interrupted, while the information transmission on band C, which has the lowest priority, is protected. Therefore, the spectral efficiency is low.

[0272] Based on this, this application proposes a method for determining the location of the handover time. This method can determine the location of the handover time for handovers between three or more bands, minimizing the waste of spectrum resources and improving the reliability of communication.

[0273] It should be noted that the descriptions "according to..." and "based on..." in the embodiments of this application can be interchanged. It should be understood that "contains" describes a relationship between sets, while "belongs to" describes a relationship between an element and a set. "X contains Y" can be replaced with the descriptions "Y includes X" or "Y contains X". For example, if X = {1,2} and Y = {1,2,3}, then every element in set X can be found in set Y. Therefore, set X is said to contain set Y, or set Y includes X, or Y contains X. For example, if X = {1,2}, then element 1 belongs to set X. Optionally, in the embodiments of this application, the descriptions "X includes Y", "X contains Y", "Y includes X", "Y contains X", or "X belongs to Y" and "X is located in Y" can also be interchanged.

[0274] In this embodiment, information transmission includes control channel information transmission, data channel information transmission, or reference signal information transmission. The reference signal includes at least one of a sounding reference signal (SRS), a demodulation reference signal (DMRS), or a channel state information reference signal (CSI-RS). "Scheduled for information transmission" can be understood as: information transmission occurs, or information transmission is present. Correspondingly, "not scheduled for information transmission" can also be understood as: no information transmission occurs, or no information transmission is present, or there is an empty symbol. "No information transmission" means that the orthogonal frequency division symbol is empty, or there is no information transmission on the orthogonal frequency division symbol. Scheduled for information transmission includes: being configured for information transmission or being granted information transmission. Being configured can be radio resource control (RRC) signaling configuration. Being granted can be downlink control information (DCI) authorization. In this application, "transmission" can be either "sending" or "receiving".

[0275] It should be understood that in this application, the terms "scheduled for information transmission," "not scheduled for information transmission," or "there is a situation where information transmission is not scheduled" refer to a single time unit, such as a single slot.

[0276] In this application, "frequency domain resources scheduled for information transmission" is a fixed term. Not every frequency domain resource that transmits information can be called a "frequency domain resource scheduled for information transmission." A "frequency domain resource scheduled for information transmission" must meet the following conditions: ① The duration of time on the frequency domain resource not scheduled for information transmission is less than the duration of the switching time; or, the length of time (e.g., symbol) on a time unit (e.g., time slot) not scheduled for information transmission is less than the duration of the switching time. Alternatively, the frequency domain resource scheduled for information transmission is a frequency domain resource scheduled for information transmission; or, the length of time on a time unit scheduled for information transmission is greater than a third duration, where the third duration = the length of a time unit - the duration of the switching time.

[0277] For example, such as Figure 6 As shown, assume that the length of the time (i.e., the empty symbol) during which no information is scheduled to be transmitted on a slot of band A is 3 symbols (e.g., ... Figure 6Symbols 11 to 13 in the diagram, the time (i.e., the length of the symbols that are scheduled to transmit information) is 11 symbols (e.g., symbols 11 to 13). Figure 6 The symbols 0 to 10 in the band A are the frequency domain resources scheduled for information transmission. Since the length of time during which information transmission is not scheduled (i.e., 3 symbols) is less than the length of time during which information transmission is scheduled (i.e., 4 symbols), it satisfies condition ①. Therefore, band A is the frequency domain resource scheduled for information transmission.

[0278] For example, such as Figure 7 As shown, assume that the length of the time (i.e., the empty symbol) during which no information is scheduled to be transmitted on a slot of band B is 4 symbols (e.g., ...). Figure 7 Symbols 10 to 13 in the text), the time scheduled for information transmission (i.e., the length of the symbols with information transmission) is 10 symbols (e.g., symbols 10 to 13). Figure 7 The symbols 0 to 9 in the band A represent the four symbols of the switching time duration. Since the length of the time that the information is not scheduled for transmission (i.e., four symbols) is equal to the duration of the switching time (i.e., four symbols), it does not satisfy condition ①. Therefore, band A is not a frequency domain resource scheduled for information transmission.

[0279] In this application, a time unit can be understood as a subframe, a slot, a mini-subframe, a mini-slot, a sub-slot, or a symbol (OFDM symbol), etc. As an example, this application mainly uses one time unit as one slot for illustration.

[0280] In this application, "frequency domain resources with time-domain resources that are not scheduled for information transmission" is a fixed phrase. Optionally, "frequency domain resources with time-domain resources that are not scheduled for information transmission" can also be described as "frequency domain resources corresponding to / located to time-domain resources that are not scheduled for information transmission." "Frequency domain resources with time-domain resources that are not scheduled for information transmission" must satisfy the following condition ②: The frequency domain resource with time-domain resources that are not scheduled for information transmission is an associated frequency domain resource or a third frequency domain resource. The duration of the time during which information transmission is not scheduled on the third frequency domain resource is greater than or equal to the duration of the switching time. That is, the third frequency domain resource satisfies the following condition ③: A frequency domain resource whose duration (e.g., symbol) during which information transmission is not scheduled in a time unit (e.g., a time slot) is greater than or equal to the duration of the switching time is a third frequency domain resource. Understandably, since there is no valid transmission on the associated frequency domain resource, or it can be described as an empty symbol in one time slot of the associated frequency domain resource, or it can be described as no information transmission on the associated frequency domain resource, the associated frequency domain resource is actually a special kind of third frequency domain resource, that is, the associated frequency domain resource also meets the conditions for being a third frequency domain resource ③.

[0281] For example, such as Figure 8 As shown, assume that the duration of unscheduled information transmission time in a slot of band A is 5 symbols (e.g., Figure 8 Symbols 9 to 13), the duration of the scheduled information transmission is 9 symbols (e.g., symbol 9 to symbol 13). Figure 8 The symbols 0 to 8 are in the middle. The duration of the switching time is 4 symbols. Since the duration of the time when information is not scheduled to be transmitted (i.e., 5 symbols) is greater than the duration of the switching time (i.e., 4 symbols), it satisfies condition ③. Therefore, band A is the third frequency domain resource. At the same time, band A is also a frequency domain resource where there is a time domain resource that is not scheduled to be transmitted.

[0282] For example, such as Figure 9 As shown, assuming there is no valid transmission on band B, or described as all empty symbols in one slot of band B, or described as no information transmission on band B, band B is an associated band, and band B is also a "frequency domain resource with time domain resources that have not been scheduled for information transmission".

[0283] It should be noted that in the embodiments of this application, at least one first frequency domain resource corresponds to a first time unit, and at least one second frequency domain resource corresponds to a second time unit. The first time unit is earlier than the second time unit, and the first time unit and the second time unit are adjacent (i.e., the first time unit and the second time unit are adjacent time units). For example, as... Figure 10As shown, assume that at least one first frequency domain resource is band A and band C, and at least one second frequency domain resource is band B and band D. Band A and band C correspond to the first time unit, and band B and band D correspond to the second time unit.

[0284] Optionally, the aforementioned "frequency domain resources scheduled for information transmission" can also be understood as follows: 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 scheduled information transmission on the first time unit is a first duration, which is less than the duration of the switching time. In other words, on the time domain resources of the first duration of the first time unit, no information transmission is scheduled.

[0285] For example, such as Figure 11 As shown, assuming the first time unit is slot1 and the second time unit is slot2, each slot includes 14 symbols (symbols 0 to 13), and the switching time lasts for 4 symbols. The end position of slot1 in band A is symbol 13. If the end position of the information transmission scheduled on slot1 is symbol 10, since 13-10 = 3 < 4, band A is the frequency domain resource scheduled for information transmission. This can also be understood as: when the switching time is on band A, the information transmission in band A at the time of the switching will be affected by the switching time. Specifically, the information transmission on one symbol will be interrupted by the switching time.

[0286] Optionally, the aforementioned "frequency domain resources scheduled for information transmission" can also be understood as follows: on the frequency domain resources scheduled for information transmission, the time difference between the start position of the scheduled information transmission and the start position of the second time unit is a second duration, which is less than the duration of the switching time. In other words, on the time domain resources of the second duration of the second time unit, no information transmission is scheduled.

[0287] For example, such as Figure 12 As shown, assuming the first time unit is slot1 and the second time unit is slot2, each slot includes 14 symbols (symbols 0 to 13), and the switching time lasts for 4 symbols. The starting position of slot2 in band A is symbol 0. If the starting position for information transmission scheduled on slot2 is symbol 3, since 3-0 = 3 < 4, band A is the frequency domain resource scheduled for information transmission. This can also be understood as: when the switching time is on band A, the information transmission in band A at the time of the switching will be affected by the switching time. Specifically, the information transmission on three symbols will be interrupted by the switching time.

[0288] Optionally, the aforementioned "frequency domain resources with time domain resources not scheduled for information transmission" can also be understood as follows: 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 scheduled information transmission on the first time unit is a first duration, and this first duration is greater than or equal to the duration of the switching time. In other words, on the time domain resources of the first duration of the first time unit, no information transmission is scheduled.

[0289] For example, such as Figure 13 As shown, assuming the first time unit is slot1 and the second time unit is slot2, each slot includes 14 symbols (symbols 0 to 13), and the handover time is 4 symbols. The end position of slot1 in band A is symbol 13. If the end position of the information transmission scheduled for slot1 is symbol 9, since 13-9=4, band A is a frequency domain resource not scheduled for information transmission. This can also be understood as: when the handover time is on band A, the information transmission of band A at the time of the handover will not be affected by the handover time. The duration of the 4 empty symbols is sufficient to satisfy the handover time.

[0290] Optionally, the aforementioned "frequency domain resources with time domain resources not scheduled for information transmission" can also be understood as follows: on the frequency domain resources scheduled for information transmission, the time difference between the start position of the scheduled information transmission in the second time unit and the start position of the second time unit is a second duration, and this second duration is greater than or equal to the duration of the switching time. In other words, on the time domain resources of the second duration of the second time unit, no information transmission is scheduled.

[0291] For example, such as Figure 14 As shown, assuming the first time unit is slot1 and the second time unit is slot2, each slot includes 14 symbols (symbols 0 to 13), and the handover time is 4 symbols. The starting position of slot2 in band A is symbol 0. If the starting position for information transmission scheduled in slot2 is symbol 5, since 5-0 = 5 > 4, band A is a frequency domain resource not scheduled for information transmission. This can also be understood as: when the handover time is on band A, the information transmission in band A at the time of the handover will not be affected by the handover time. The duration of the 5 empty symbols is sufficient to satisfy the handover time.

[0292] In this embodiment of the application, "at the switching time, switching from... to..." can also be understood as: "the switching time is used to switch from... to...". In this embodiment of the application, "at the switching time" can also be understood as "during the switching time", or "on the switching time", or "after / through the switching time".

[0293] The description of "group" or "combination" in the embodiments of this application can be understood as "pair". For example, the descriptions of "frequency domain resource group" and "frequency domain resource pair" can be used interchangeably. It should be noted that the frequency domain resources involved in the embodiments of this application can be understood as frequency bands or carriers. As an example, when frequency domain resources are understood as frequency bands, sub-frequency domain resources can be carriers. For example, the following... Figure 15 , Figure 19 as well as Figure 21 The frequency domain resources in the illustrated embodiments can be understood as frequency bands or carriers. Figure 18 and Figure 23 In the illustrated embodiments, frequency domain resources should be understood as frequency bands, and sub-frequency domain resources should be understood as carriers.

[0294] Furthermore, in this embodiment, "switch from" means before / from which a frequency domain resource is switched, for example, the frequency domain resource before the switch is switched from or from that frequency domain resource. "Switch to" means after / to which a frequency domain resource is switched, for example, the frequency domain resource after the switch is switched to or to that frequency domain resource. Correspondingly, "switch from band / CC" means before or from band / CC, and "switch to band / CC" means after or to band / CC. A frequency domain resource group or a frequency domain resource pair includes one "switch from band / CC" and one "switch to band / CC".

[0295] In this application embodiment, having the capability to transmit via a first radio frequency chain can be understood as: the ability for radio frequency chains with different frequency domain resource pairs to transmit independently, or having advanced capabilities (i.e., the UE indicates true in the capability[tx-on-non-affected-band]), or having advanced radio frequency chain transmission capabilities. Independent transmission of a radio frequency chain means that the transmission of one radio frequency chain is not affected by the switching of another radio frequency chain. That is, while the other radio frequency chain is switching, the first radio frequency chain can still transmit. For example, while radio frequency chain 1 is switching, another radio frequency chain 2 can also transmit.

[0296] The second radio frequency chain transmission capability in this application embodiment can be understood as: the ability to transmit radio frequency chains with different frequency domain resource pairs non-independently, or, lacking advanced capabilities (i.e., UE does not indicate True in the capability[tx-on-non-affected-band]), or lacking advanced radio frequency chain transmission capabilities. Non-independent radio frequency chain transmission means that the transmission of one radio frequency chain is affected by the switching of another radio frequency chain. That is, during the switching of the other radio frequency chain, the first radio frequency chain cannot transmit, and information transmission will be interrupted. In other words, the two radio frequency chains cannot work independently and need to be affected by each other. For example, during the switching of radio frequency chain 1, the other radio frequency chain 2 cannot transmit; that is, radio frequency chain 2 can only transmit after radio frequency chain 1 has finished switching.

[0297] In this application, the frequency domain resource without the highest priority can also be understood as the frequency domain resource with the lowest priority. That is, when determining the frequency domain resource where the handover time is located, excluding the frequency domain resource before or after the handover where the highest priority frequency domain resource is located can also be understood as: when determining the frequency domain resource where the handover time is located, setting the frequency domain resource after or before the handover where the lowest priority frequency domain resource is located as the frequency domain resource where the handover time is located. In this application, "highest priority" can be understood as higher priority, and "lowest priority" can be understood as lower priority.

[0298] It should be noted that the prerequisite for determining the frequency domain resources where the handover time is located in this application is that the time domain range or time difference (gap) between the information transmission in the first time unit and the information transmission in the second time unit of the network device scheduling that does not require uplink transmission is less than the handover time required by the terminal device. The time difference that does not require uplink transmission can be understood as a void symbol. These time differences that do not require uplink transmission are consecutive void symbols.

[0299] The following is a detailed description of the device for determining the switching time and location provided in this application:

[0300] It should be noted that, for switching between three or more bands, this application proposes a new criterion for determining the switching period location, hereinafter referred to as Criterion 2, which is described as follows:

[0301] The UE determines the switching period location as follows: switching-from band(s) or switching-to band(s) that are not the highest priority bands, excluding associated bands. This can also be understood as follows: when determining the highest priority frequency domain resource from those involved in the handover, associated bands are not considered as part of the handover process, or are not taken into account. Then, based on this determined highest priority frequency domain resource, the frequency domain resource where the handover occurs is further determined to be either a pre-handover frequency domain resource or a post-handover frequency domain resource that is not the highest priority frequency domain resource. It should be understood that non-associated frequency domain resources are frequency domain resources other than associated frequency domain resources.

[0302] And / or, the UE determines the switching period location as: switching-from band(s) or switching-to band(s) that are not the highest priority bands, excluding bands whose information transmission is not affected by the handover time. This can also be understood as follows: when determining the highest priority frequency domain resource from those involved in the handover, the "frequency domain resources whose information transmission is not affected by the handover time" are not considered as part of the handover, or are not taken into account. Then, based on this determined highest priority frequency domain resource, the frequency domain resource where the handover time occurs is further determined to be either a pre-handover frequency domain resource or a post-handover frequency domain resource that is not the highest priority frequency domain resource.

[0303] The frequency domain resources involved in the handover are a set of at least one first frequency domain resource and at least one second frequency domain resource.

[0304] 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 Txswitching and is not with the highest priority band except the associatedband / the band wherein the switching period will not interrupt the ULtransmission in this band.

[0305] Optionally, the switching time not interrupting the uplink transmission on the band can also be described as the switching time not affecting the uplink transmission on the band.

[0306] Optionally, the description of criterion 2 can also be as follows: When associated bands are involved, if the associated band has the highest priority, it should be excluded when determining the switching period location, that is, the associated band should be excluded from the frequency bands involved in the uplink handover.

[0307] And / or, when an associated band is involved, it should be excluded when determining the switching period location, that is, the associated band should be excluded from the frequency band involved in the uplink handover.

[0308] And / or, when it comes to “frequency domain resources whose information transmission will not be affected by the handover time”, if the frequency domain resource has the highest priority, it should be excluded from the frequency bands involved in the uplink handover when determining the switching period location.

[0309] And / or, when it comes to "frequency domain resources where information transmission will not be affected by the switching time", they should be excluded from the frequency bands involved in uplink switching when determining the switching period location.

[0310] The frequency domain resources involved in the handover are a set of at least one first frequency domain resource and at least one second frequency domain resource.

[0311] That is, When associated bands / the band wherein the switching period will not interrupt the UL transmission in this band involved, (if the associated bands / the band wherein the switching period will not interrupt the ULtransmission in this band is of the highest priority), it should be excluded from the band (s) that is involved in the UL Tx switching, when determining the switching period location.

[0312] Optionally, the description of criterion 2 can also be as follows: When the associated band has the highest priority, it should be excluded from the list of frequency domain resources involved in the handover to determine whether the switching period location is switching-from-band(s) or switching-to-band(s). And / or, when the frequency domain resources whose information transmission will not be affected by the handover time have the highest priority, they should be excluded from the list of frequency domain resources involved in the handover to determine whether the switching period location is switching-from-band(s) or switching-to-band(s).

[0313] That is, when the associated band / the band wherein the switching period will not interrupt the UL transmission in this band is of highest priority, it should be excluded from the band list for determining switching band(s)orswitching to band(s)for the switching period location.

[0314] For guideline 2, please refer to Figure 15, Figure 15 This is a flowchart illustrating the process of determining the switching time position provided in an embodiment of this application. For example... Figure 15 As shown, determining the switching time position includes the following step S1501. Figure 15 The method shown can be executed by a terminal device or an access network device. Alternatively, Figure 15 The method shown can be executed by a chip in a terminal device or access network device.

[0315] in:

[0316] S1501. When switching from at least one first frequency domain resource to at least one second frequency domain resource, determine the frequency domain resource where the switching time occurs from at least one first frequency domain resource and at least one second frequency domain resource. The frequency domain resource where the switching time occurs is the frequency domain resource that is scheduled for information transmission and does not have the highest priority, and the frequency domain resource where the switching time occurs is at least one first frequency domain resource or at least one second frequency domain resource.

[0317] It should be understood that the switching time is the time required to switch from at least one first frequency domain resource to at least one second frequency domain resource. It should be noted that the switching time for different frequency domain resource pairs in this application embodiment may be different. In this application, the at least one first frequency domain resource and the at least one second frequency domain resource include at least two frequency domain resource pairs, and any frequency domain resource pair includes two frequency domain resources. Optionally, a frequency domain resource pair can also be described as a bandpair. Optionally, the at least two frequency domain resource pairs include at least three frequency domain resources, that is, the sum of the number of first frequency domain resources and the number of second frequency domain resources is greater than or equal to 3.

[0318] It should be understood that in the embodiments of this application, at least one first frequency domain resource is the frequency domain resource before the switch (switching-from band(s)), and at least one second frequency domain resource is the frequency domain resource after the switch (switching-to band(s)). In other words, this application describes the frequency domain resource before the switch as at least one first frequency domain resource and the frequency domain resource after the switch as at least one second frequency domain resource. If necessary, different descriptions can be interchanged. It is understood that at least one first frequency domain resource and at least one second frequency domain resource are all frequency domain resources involved in this switch. The set of frequency domain resources composed of at least one first frequency domain resource and at least one second frequency domain resource is hereinafter referred to as the second frequency domain resource set. The set of frequency domain resources composed of the frequency domain resources scheduled for information transmission from at least one first frequency domain resource and at least one second frequency domain resource is hereinafter referred to as the first frequency domain resource set. That is, the first frequency domain resource set is a subset of the second frequency domain resource set, or it can be understood that the frequency domain resources included in the first frequency domain resource set are the frequency domain resources retained after excluding associated frequency domain resources and / or third frequency domain resources from the second frequency domain resource set. Optionally, at least one first frequency domain resource and at least one second frequency domain resource in this application are frequency domain resources that the terminal device supports for switching.

[0319] Optionally, when switching from at least one first frequency domain resource to at least one second frequency domain resource, determining the frequency domain resource where the switching time occurs from at least one first frequency domain resource and at least one second frequency domain resource can also be described using any of the following five methods:

[0320] ① When switching from at least one first frequency domain resource to at least one second frequency domain resource, the frequency domain resource in which the switching time occurs is determined based on the frequency domain resource with the highest priority among the at least one first frequency domain resource and the at least one second frequency domain resource that is scheduled for information transmission.

[0321] ② When switching from at least one first frequency domain resource to at least one second frequency domain resource, the frequency domain resource in which the switching time occurs is determined based on the frequency domain resource with the highest priority among the frequency domain resources scheduled for information transmission in at least one first frequency domain resource and at least one second frequency domain resource.

[0322] ③ When switching from at least one first frequency domain resource to at least one second frequency domain resource, the frequency domain resource with the highest priority is determined based on the frequency domain resource in at least one first frequency domain resource and at least one second frequency domain resource whose information transmission will be interrupted by the switching time.

[0323] ④ When switching from at least one first frequency domain resource to at least one second frequency domain resource, the frequency domain resource where the switching time is located is determined based on the frequency domain resource with the highest priority among the at least one first frequency domain resource and the at least one second frequency domain resource whose information transmission will be interrupted by the switching time.

[0324] ⑤ When switching from at least one first frequency domain resource to at least one second frequency domain resource, a first frequency domain resource set is determined, and based on the frequency domain resource with the highest priority in the first frequency domain resource set, the frequency domain resource where the switching time occurs is determined from at least one first frequency domain resource and at least one second frequency domain resource. The frequency domain resources included in the first frequency domain resource set are those scheduled for information transmission. Furthermore, the frequency domain resources included in the first frequency domain resource set are the spectrum resources involved in the switching. The first frequency domain resource set can be understood as being determined based on the second frequency domain resource set; that is, the second frequency domain resource set is determined, and the first frequency domain resource set is determined based on the second frequency domain resource set. The frequency domain resources included in the second frequency domain resource set are the at least one first frequency domain resource and at least one second frequency domain resource, and the first frequency domain resource set is a subset of the second frequency domain resource set. It is understandable that frequency domain resources belonging to the second frequency domain resource set but not to the first resource set are frequency domain resources that have time domain resources that have not been scheduled for information transmission. For the understanding of "frequency domain resources that have time domain resources that have not been scheduled for information transmission", please refer to the above explanation, and will not be repeated here.

[0325] Optionally, the frequency domain resource where the handover time occurs is the frequency domain resource that is scheduled for information transmission but does not have the highest priority, and the frequency domain resource where the handover time occurs is at least one first frequency domain resource or at least one second frequency domain resource. Alternatively, it can be replaced with: "The frequency domain resource where the handover time occurs" satisfies the following two conditions:

[0326] Condition 1: When the frequency domain resource where the switching time is located is at least one first frequency domain resource or at least one second frequency domain resource, the frequency domain resource where the switching time is located does not include the frequency domain resource with the highest priority.

[0327] Condition 2: When the frequency domain resource where the switching time is located is at least one first frequency domain resource or at least one second frequency domain resource, the information transmission of the frequency domain resource where the switching time is located will be affected by the switching time (i.e., the information transmission will be interrupted or partially interrupted by the switching time).

[0328] In this application, the frequency domain resource where the switching time is located being at least one first frequency domain resource can be replaced by: the frequency domain resource where the switching time is located being the frequency domain resource before the switching; the frequency domain resource where the switching time is located being at least one second frequency domain resource can be replaced by: the frequency domain resource where the switching time is located being the frequency domain resource after the switching.

[0329] The frequency domain resource where the switching time is located is at least one first frequency domain resource, that is, the frequency domain resource where the switching time is located belongs to or is located in at least one first frequency domain resource; the frequency domain resource where the switching time is located is at least one second frequency domain resource, that is, the frequency domain resource where the switching time is located belongs to or is located in at least one second frequency domain resource.

[0330] The frequency domain resource at the handover time is not included, or can be understood as not being included in at least one first frequency domain resource / at least one second frequency domain resource, or not being included in any one of at least one first frequency domain resource / at least one second frequency domain resource. Optionally, when the frequency domain resource with the highest priority and scheduled for information transmission belongs to at least one first frequency domain resource, the frequency domain resource at the handover time is at least one second frequency domain resource. That is, when the frequency domain resource with the highest priority and scheduled for information transmission is located before the handover, the frequency domain resource at the handover time is the frequency domain resource after the handover. Optionally, when the frequency domain resource with the highest priority and scheduled for information transmission belongs to at least one second frequency domain resource, the frequency domain resource at the handover time is at least one first frequency domain resource. That is, when the frequency domain resource with the highest priority and scheduled for information transmission is located after the handover, the frequency domain resource at the handover time is the frequency domain resource before the handover.

[0331] Optionally, the frequency domain resources scheduled for information transmission mentioned above can be understood as follows: the duration of time on the frequency domain resources scheduled for information transmission that are not scheduled for information transmission is shorter than the duration of the handover time. It should be understood that the scheduled information transmission in this application refers to a single time unit. For an understanding of "frequency domain resources scheduled for information transmission," please refer to the foregoing explanation, which will not be repeated here.

[0332] Optionally, the frequency domain resources scheduled for information transmission can also be understood as follows: the frequency domain resources scheduled for information transmission are not associated frequency domain resources and / or are not third frequency domain resources. Specifically, the duration of the time on the third frequency domain resource that is not scheduled for information transmission is greater than or equal to the duration of the switching time. That is, when at least one first frequency domain resource and at least one second frequency domain resource include associated frequency domain resources, the remaining frequency domain resources after excluding the associated frequency domain resources are the frequency domain resources scheduled for information transmission. When at least one first frequency domain resource and at least one second frequency domain resource include a third frequency domain resource, the remaining frequency domain resources after excluding the third frequency domain resources are the frequency domain resources scheduled for information transmission. When at least one first frequency domain resource and at least one second frequency domain resource include both associated and third frequency domain resources, the remaining frequency domain resources after excluding both the associated and third frequency domain resources are the frequency domain resources scheduled for information transmission.

[0333] For ease of understanding Figure 15 The embodiments shown are illustrated below with specific examples.

[0334] Example 1, such as Figure 16 The handover scenario shown is A+C→B. If the scheduled band B is a 1-port transmission and the uplinkTxSwitching-DualUL-TxState is configured as 1T, then the associated band D of band B needs to be considered for handover. That is, the frequency band pairs involved are band pair 1: A→B and band pair 2: C→D. If the priority is configured as D>A>C>B, then according to the definition of criterion 2, although band D has the highest priority, it needs to be excluded because it is an associated band. The band with the highest priority is determined from the remaining bands (i.e., bands A, C, and B). Among them, band A has the highest priority, so the switch to band (i.e., bands B and D) is selected as the switching periodlocation.

[0335] Example 2, such as Figure 17 The handover scenario shown is A 2T→B. If the scheduled band B is a 1-port transmission and uplinkTxSwitching-DualUL-TxState is configured as 1T, then the associated band D of band B also needs to be considered for handover. That is, the frequency band pairs involved are band pair 1: A→B and band pair 2: A→D. If the priority is configured as D>A>B, then according to the definition of criterion 2, although band D has the highest priority, band D is an associated band. Therefore, band D needs to be excluded. Among the remaining bands (i.e., band A and B), the band with the highest priority is determined. Among them, band A has the highest priority. Therefore, switch to band (i.e., band B and D) is selected as the switching periodlocation.

[0336] Optional, Figure 15 In the illustrated embodiment, the number of frequency domain resources with the same priority can be one, or the number of frequency domain resources with the same priority can be multiple. For example, the number of frequency domain resources with the highest priority among those scheduled for information transmission can be one. As another example, when there are multiple frequency domain resources with the highest priority among those scheduled for information transmission, these multiple highest-priority frequency domain resources are either all located before the handover or all located after the handover.

[0337] In this embodiment, for handover scenarios involving three or more frequency domain resources, when determining the switching period location, the frequency domain resources participating in the priority comparison should exclude associated frequency domain resources and / or third frequency domain resources. That is, the switching period location is determined based on the highest-priority frequency domain resource among those involved in the handover (excluding associated and / or third frequency domain resources). This helps minimize spectrum resource waste and improves communication reliability.

[0338] This application also provides Figure 18 The illustrated embodiment. Optionally, Figure 18 The illustrated embodiments can be used with Figure 15 The illustrated embodiments are combined, for example, in Figure 15 The following steps are further included in the implementation plan:

[0339] S1801. The terminal device sends capability information to the access network device. Correspondingly, the access network device receives the capability information from the terminal device.

[0340] The capability information is used to indicate the frequency domain resources that the terminal device supports concurrently. For example, capability information indicating band A and band B means that band A and band B support concurrent operation. Alternatively, the capability information can also indicate frequency domain resources that the terminal device does not support concurrent operation. For example, capability information indicating band A and band B means that band A and band B do not support concurrent operation. Alternatively, the capability information is used to indicate associated frequency domain resources supported by the terminal device. For example, capability information indicating that the associated frequency domain resource of band A is band B. Alternatively, the capability information is used to indicate the frequency domain resources supported by the terminal device and the associated frequency domain resources of the frequency domain resources supported by the terminal device. For example, capability information indicating band A and the associated frequency domain resource of band A is band B.

[0341] Optionally, the capability information may also be used to indicate that one frequency domain resource among those expected to run concurrently has a higher priority than another frequency domain resource that is an associated frequency domain resource. For example, the capability information may indicate that band A and its associated frequency domain resource band B have a higher priority than band B.

[0342] In this application, the priority of a frequency domain resource can be understood as the priority at which a switching period location is not configured for that frequency domain resource. Correspondingly, a frequency domain resource with the highest priority can be understood as a frequency domain resource on which a switching period location is not likely to be configured. Similarly, a frequency domain resource with the lowest priority can be understood as a frequency domain resource on which a switching period location is likely to be configured.

[0343] Optionally, the priority of a frequency domain resource can also be understood as the priority of the switching period location configured on that frequency domain resource. Correspondingly, a frequency domain resource with the highest priority can be understood as a frequency domain resource on which the switching period location tends to be configured. A frequency domain resource with the lowest priority can also be understood as a frequency domain resource on which the switching period location does not tend to be configured. In this approach, the highest priority in the embodiments of this application can be replaced with the lowest priority.

[0344] Optionally, the capability information is also used to indicate the radio frequency chain transmission capabilities supported by the terminal device, where the radio frequency chain transmission capabilities include a first radio frequency chain transmission capability or a second radio frequency chain transmission capability.

[0345] Optionally, the capability information can also be used to indicate that when determining the switching time location, the highest priority band where "switch to" is located is used as the basis for judgment, that is, the frequency domain resource where the switching time is located is "switch from". Alternatively, the capability information can also be used to indicate that when determining the switching time location, the highest priority band where "switch from" is located is used as the basis for judgment, that is, the frequency domain resource where the switching time is located is "switch to".

[0346] Optionally, capability information can also be used to indicate the sub-priority level of resources as the basis for determining the handover time location.

[0347] It should be noted that S1801 is an optional step.

[0348] S1802, The access network device sends first configuration information to the terminal device. Correspondingly, the terminal device receives the first configuration information from the access network device.

[0349] Among them, the first configuration information is used to configure the priority information of at least one first frequency-domain resource and at least one second frequency-domain resource, and the priorities of the frequency-domain resources in the at least one first frequency-domain resource and at least one second frequency-domain resource are different. Alternatively, the first configuration information is used to configure the priority information of the frequency-domain resources. Optionally, the priority information can be a numerical value or an index. Optionally, the priority information can also be a list. In this list, the front-to-back order represents the priority level. For example, the frequency bands with the priority information being True are: A, B, C. The frequency band with the priority information being False is: D. Then the lowest priority is A, followed by B, and then C, that is: the priority of the frequency-domain resources is A < B < C. The highest priority is D. Based on this priority information (or in accordance with this priority order), these frequency bands are not configured with switching period location. Another example, the frequency bands with the priority information being True are: A, B, C. The frequency band with the priority information being False is: D. Then the lowest priority is C, followed by B, and then A. The highest priority is D. Based on this priority information (or in accordance with this priority order), these frequency bands are not configured with switching period location. Another example, the frequency bands with the priority information being False are: A, B, C. The frequency band with the priority information being True is: D. Then the highest priority is A, followed by B, and then C. The lowest priority is D. Based on this priority information (or in accordance with this priority order), these frequency bands are not configured with switching period location. Another example, the frequency bands with the priority information being False are: A, B, C. The frequency band with the priority information being True is: D. Then the highest priority is C, followed by B, and then A. The lowest priority is D. Based on this priority information (or in accordance with this priority order), these frequency bands are not configured with switching period location.

[0350] Optionally, the access network device may also send the first configuration information to the terminal device according to the received capability information.

[0351] S1803. The access network device sends the second configuration information to the terminal device. Correspondingly, the terminal device receives the second configuration information from the access network device.

[0352] Among them, the second configuration information is used to configure the associated frequency-domain resources of the frequency-domain resources. Alternatively, the second configuration information is used to configure the associated frequency-domain resources of any one of the at least one first frequency-domain resource and at least one second frequency-domain resource. Among them, the priority of the configured fourth frequency-domain resource is higher than the priority of the associated frequency-domain resources of the fourth frequency-domain resource, and the fourth frequency-domain resource is one of the at least one first frequency-domain resource and at least one second frequency-domain resource.

[0353] Optionally, the access network device may also send second configuration information to the terminal device based on the received capability information.

[0354] It should be noted that the first configuration information and the second configuration information can be sent in the same message. Optionally, the first configuration information and the second configuration information can also be sent in different messages. There is no restriction on this.

[0355] Optionally, the execution order of S1802 and S1803 above is not restricted.

[0356] In this embodiment of the application, when the access network device performs priority configuration, it is configured that the priority of the associated frequency domain resource will not be higher than that of the associated frequency domain resource. This can effectively avoid the subsequent decision on the switching period location based on the highest priority frequency domain resource being made with reference to the associated frequency domain resource. This can minimize the waste of spectrum resources and help improve the reliability of communication.

[0357] Please see Figure 19 , Figure 19 This is another flowchart illustrating the determination of the switching time position provided in an embodiment of this application. For example... Figure 19 As shown, determining the switching time position includes the following steps S1901 to S1902. Figure 19 The method shown can be executed by a terminal device or an access network device. Alternatively, Figure 19 The method shown can be executed by a chip in a terminal device or access network device. Wherein:

[0358] S1901. When switching from at least one first frequency domain resource to at least one second frequency domain resource, if the terminal device has the capability to transmit a first radio frequency chain, the frequency domain resource in which the first switching time occurs is determined according to the priority of a frequency domain resource over a mid-frequency domain resource.

[0359] In one implementation, when switching from at least one first frequency domain resource to at least one second frequency domain resource, the frequency domain resource where the switching time occurs needs to be determined based on the RF chain transmission capability of the terminal device. For example, if the terminal device has a first RF chain transmission capability, the frequency domain resource where the first switching time occurs is determined based on the priority of the frequency domain resources in a frequency domain resource pair. That is, when the terminal device has a first RF chain transmission capability, the determination of the frequency domain resource where the switching time occurs only refers to the priority of the two frequency domain resources contained in the frequency domain resource pair involved in this switching, and does not refer to all frequency domain resources involved in this switching. In other words, for a terminal device with a first RF chain transmission capability, each frequency domain resource pair switches to its own resource, rather than being determined based on the highest priority among all frequency domain resource pairs. For ease of description, this method of determining the switching time location will be referred to as Criterion 3.1.

[0360] Based on criterion 3.1, the frequency domain resource where the first handover time occurs is not the highest priority frequency domain resource in a frequency domain resource pair, or it can be described as follows: the frequency domain resource where the first handover time occurs is not the highest priority frequency domain resource in a frequency domain resource pair. A frequency domain resource pair includes two frequency domain resources, and at least one first frequency domain resource handover and at least one second frequency domain resource handover include at least two frequency domain resource pairs.

[0361] Optionally, the first switching time is the time for switching from one frequency domain resource to an intermediate frequency domain resource. For example, the duration of the switching time for different frequency domain resources to intermediate frequency domain resources can be different.

[0362] For example, such as Figure 20 The handover scenario shown is: band pair 1: A→B, band pair 2: C→D. If the priority is configured as A>B>D>C (or A>D>B>C), then according to the defined criterion 3.1 above, in band pair 1, since band A has the highest priority, the UE selects band B as the switching period location. In band pair 2, since band D has the highest priority, the UE selects band C as the switching period location. The handover time in band pair 1 is handover time 1, and the handover time in band pair 2 is handover time 2. The duration of handover time 1 is shorter than the duration of handover time 2.

[0363] Optionally, criterion 3.1 above applies only if a certain condition is met. This condition can be that the highest-priority frequency domain resource is not located after the handover (i.e., the highest-priority frequency domain resource is located before the handover). In other words, in another implementation, the above-mentioned method of determining the frequency domain resource where the first handover time is located based on the priority of a frequency domain resource to a mid-frequency domain resource, if the terminal device has the capability to transmit via the first radio frequency chain, can also be understood as: when the highest-priority frequency domain resource is not located after the handover (i.e., the highest-priority frequency domain resource is located before the handover), and the terminal device has the capability to transmit via the first radio frequency chain, the frequency domain resource where the first handover time is located is determined based on the priority of a frequency domain resource to a mid-frequency domain resource. For ease of description, this method of determining the handover time location will be referred to as criterion 3.2. That is, criterion 3.2 further specifies the applicable conditions of criterion 3.1; criterion 3.1 applies only when these applicable conditions are met. In other words, when these applicable conditions are not met, criterion 3.1 does not apply, and criterion 2 applies instead. Here, the applicable condition is that the frequency domain resource with the highest priority is not located after the handover (i.e., the frequency domain resource with the highest priority is located before the handover).

[0364] It should be noted that determining the handover time location based on criterion 3.2 simplifies implementation complexity. This simplification is possible because determining the handover time location based on the terminal device's RF transmission capabilities involves more factors. Generally, adjusting or readjusting the RF chain at the end of a slot is easier and more readily implemented by the terminal device than adjusting or readjusting it at the beginning of a slot. Therefore, assuming there are slots 1 and 2, with slot 1 preceding slot 2, when the highest priority frequency domain resource is located after the handover, and the terminal device needs to adjust or readjust the RF chain at the end of slot 1, criterion 3.2 can be used to determine the handover time location. However, when the highest priority frequency domain resource is located before the handover, and the terminal device needs to adjust or readjust the RF chain at the beginning of slot 2, criterion 3.1 can be used to determine the handover time location, i.e., considering the terminal device's RF chain capabilities to reduce terminal device complexity.

[0365] For example, please see also Figure 20In the handover scenario shown, since the highest priority frequency domain resource is band A, and band A is located before the handover, criterion 3.2 applies. According to criterion 3.2, in band pair 1, because band A has the highest priority, the UE selects band B as the switching period location. In band pair 2, because band D has the highest priority, the UE selects band C as the switching period location.

[0366] As is understandable, the understanding of the first radio frequency chain's transmission capability is as described above and will not be repeated here.

[0367] S1902. When switching from at least one first frequency domain resource to at least one second frequency domain resource, if the terminal device has the capability to transmit a second radio frequency chain, the frequency domain resource in which the second switching time is located is determined from at least one first frequency domain resource and at least one second frequency domain resource.

[0368] Specifically, the frequency domain resource where the second handover time occurs is the frequency domain resource that does not have the highest priority among the frequency domain resources scheduled for information transmission, and the frequency domain resource where the second handover time occurs is at least one first frequency domain resource or at least one second frequency domain resource. In other words, when the terminal device has the capability to transmit via a second radio frequency chain, the determination of the frequency domain resource where the handover time occurs is governed by criterion 2. In other words, when the terminal device has the capability to transmit via a second radio frequency chain, the determination of the frequency domain resource where the handover time occurs requires selection based on the highest priority band among all bands scheduled for information transmission in all frequency domain resource pairs involved in the handover, and cannot be based on selecting two bands involved in each frequency domain resource. For ease of description, the handover time location determination method described in S1902 hereafter will be referred to as criterion 3.3. The difference between criterion 3.3 and criterion 2 is that criterion 3.3 further specifies the applicable conditions of criterion 2, which is that the terminal device has the capability to transmit via a second radio frequency chain.

[0369] For example, please see also Figure 5 In the switching scenario shown, assuming the terminal device has the capability to transmit via a second radio frequency chain, then according to criterion 3.3, since band A has the highest priority, switch to bands (i.e., bands B and D) is selected as the switching period location.

[0370] For another example, please see also Figure 16In the switching scenario shown, assuming the terminal device has the capability to transmit via a second radio frequency chain, according to criterion 3.3, although band D has the highest priority, it is an associated band and therefore needs to be excluded. The band with the highest priority is determined from the remaining bands (i.e., bands A, C, and B). Since band A has the highest priority, the switch to band (i.e., bands B and D) is selected as the switching periodlocation.

[0371] For another example, please refer to [the following]. Figure 17 In the switching scenario shown, assuming the terminal device has the capability to transmit via a second radio frequency chain, according to criterion 3.3, although band D has the highest priority, it is an associated band. Therefore, band D needs to be excluded. Among the remaining bands (i.e., bands A and B), the band with the highest priority is determined. Since band A has the highest priority, the switch to band (i.e., bands B and D) is selected as the switching period location.

[0372] The second switching time is the time required to switch from at least one first frequency domain resource to at least one second frequency domain resource. Optionally, the duration of the second switching time may be different for different frequency domain resource pairs that include the switching from at least one first frequency domain resource to at least one second frequency domain resource.

[0373] As is understandable, the understanding of the second radio frequency chain transmission capability is as described above and will not be repeated here.

[0374] In this embodiment, the location of the switching time is determined by combining the radio frequency transmission capability of the terminal device. This approach is flexible, helps to reduce the impact on information transmission, and also improves the reliability of communication.

[0375] Please see Figure 21 , Figure 21 This is another flowchart illustrating the determination of the switching time position provided in an embodiment of this application. For example... Figure 21 As shown, determining the switching time position includes the following steps S2101. Figure 21 The method shown can be executed by a terminal device or an access network device. Alternatively, Figure 21 The method shown can be executed by a chip in a terminal device or access network device.

[0376] in:

[0377] S2101. When switching from at least one first frequency domain resource to at least one second frequency domain resource, determine the frequency domain resource where the switching time occurs from the at least one first frequency domain resource and the at least one second frequency domain resource. The frequency domain resource where the switching time occurs is determined based on a target frequency domain resource among the at least one first frequency domain resource and the at least one second frequency domain resource. The target frequency domain resource is one of a plurality of highest-priority frequency domain resources among the at least one first frequency domain resource and the at least one second frequency domain resource. A portion of the highest-priority frequency domain resources are contained within the at least one first frequency domain resource, and another portion of the highest-priority frequency domain resources are contained within the at least one second frequency domain resource.

[0378] In some feasible implementations, when at least one first frequency domain resource and at least one second frequency domain resource include multiple highest-priority frequency domain resources, a portion of these highest-priority frequency domain resources are located before the handover, and another portion are located after the handover. For example, assuming that at least one first frequency domain resource and at least one second frequency domain resource have two highest-priority frequency domain resources, then one of these two highest-priority frequency domain resources belongs to at least one first frequency domain resource, and the other highest-priority frequency domain resource belongs to at least one second frequency domain resource. Here, the at least one first frequency domain resource is the frequency domain resource before the handover, and the at least one second frequency domain resource is the frequency domain resource after the handover. Optionally, the multiple highest-priority frequency domain resources are frequency domain resources scheduled for information transmission, or the multiple highest-priority frequency domain resources are not associated frequency domain resources or third frequency domain resources.

[0379] Optionally, the target frequency domain resource being one of the highest priority frequency domain resources among at least one first frequency domain resource and at least one second frequency domain resource can be understood as: the target frequency domain resource belongs to the frequency domain resource before the handover, or the target frequency domain resource belongs to the frequency domain resource after the handover. Optionally, it can also be described as: the target frequency domain resource is located before the handover, or the target frequency domain resource is located after the handover.

[0380] Understandably, the frequency domain resource where the handover time occurs is the one where the target frequency domain resource is not located. For example, assuming the target frequency domain resource is located before the handover, then the frequency domain resource where the handover time occurs is the frequency domain resource after the handover (i.e., the frequency domain resource where the handover time occurs is at least one second frequency domain resource). Alternatively, assuming the target frequency domain resource is located after the handover, then the frequency domain resource where the handover time occurs is the frequency domain resource before the handover (i.e., the frequency domain resource where the handover time occurs is at least one first frequency domain resource). For ease of description, this method of determining the handover time location will be referred to as Criterion 4.1. It should be noted that Criterion 4.1 can be reported as a capability by the terminal device, stipulated by the protocol, configured by the access network device, or pre-configured, etc., without restriction here.

[0381] For ease of understanding, this application will primarily use the example of two highest-priority frequency domain resources, i.e., at least one first frequency domain resource and at least one second frequency domain resource have two highest-priority frequency domain resources, one of which is located before the handover and the other is located after the handover. Based on this, the aforementioned criterion 4.1 can be defined as follows: When there are two highest-priority bands, located in the frequency domain resources before and after the handover of the two frequency domain resource pairs respectively, it can be stipulated that the highest-priority band where the switch to is located is used as the criterion, i.e., the frequency domain resource where the handover time is located is preferred as the switch from. In this way, the terminal device uses one or more symbols at the end of a slot for the handover time, which is beneficial for the terminal device to process and reduces the interruption of reference signals transmitted on the first few symbols of a slot. Optionally, it can be specified that the highest priority band where the switch from is located is used as the basis for judgment, that is, the frequency domain resource where the switching time is located is the switch to. In this way, the terminal device uses the first one or more symbols of a slot for the switching time. In scenarios where uplink information transmission is not scheduled to start from the first symbol of a slot, it is beneficial for the terminal device to reduce transmission interruptions on symbols.

[0382] For example, such as Figure 22 The switching scenario shown is: band pair 1: A→B, band pair 2: C→D, where the priority is configured as A=D>B>C. Referring to the above definition, as follows... Figure 22 In (a), if the highest priority band to which the switch is located is prioritized (i.e., the switch from is preferred), then the switch from bands (i.e., bands A and C) is chosen as the switching period location. Optional, such as... Figure 22In (b), if the highest priority band where the switch from is located is used as the criterion (i.e., switch to is preferred), then switch from band (i.e. bands B and D) is selected as the switching period location.

[0383] In other feasible implementations, it can be stipulated that there is only one frequency domain resource of the same priority. When at least one first frequency domain resource and at least one second frequency domain resource have a frequency domain resource with the highest priority, the frequency domain resource where the handover time occurs is the one among the frequency domain resources scheduled for information transmission that does not have the highest priority, and the frequency domain resource where the handover time occurs is at least one first frequency domain resource or at least one second frequency domain resource. That is to say, when it is stipulated that there is only one frequency domain resource of the same priority, the method for determining the handover time position can refer to criterion 2.

[0384] In this embodiment of the application, by defining criterion 4.1, the conflict in determining the switching period location when multiple frequency domain resources have the same highest priority is resolved.

[0385] Please see Figure 23 , Figure 23 This is another flowchart illustrating the determination of the switching time position provided in an embodiment of this application. For example... Figure 23 As shown, determining the switching time position includes the following step S2301. Figure 23 The method shown can be executed by a terminal device or an access network device. Alternatively, Figure 23 The method shown can be executed by a chip in a terminal device or access network device.

[0386] in:

[0387] S2301. When switching from at least one first frequency domain resource to at least one second frequency domain resource, the frequency domain resource where the switching time is located is determined based on the priority of the frequency domain resource with the highest priority among the at least one first frequency domain resource switching and the priority of the multiple sub-frequency domain resources included in the frequency domain resource with the highest priority.

[0388] The frequency domain resource where the handover time occurs is at least one first frequency domain resource or at least one second frequency domain resource. The frequency domain resource with the highest priority belongs to at least one first frequency domain resource and also belongs to at least one second frequency domain resource. The handover time is the time taken to switch from at least one first frequency domain resource to at least one second frequency domain resource. Optionally, the frequency domain resource with the highest priority is the frequency domain resource scheduled for information transmission. It should be noted that the sub-frequency domain resources within the highest-priority frequency domain resource before the handover are different from the sub-frequency domain resources within the highest-priority frequency domain resource after the handover.

[0389] For example, the priority relationship among multiple sub-frequency domain resources included in the highest-priority frequency domain resource can be as follows: the sub-frequency domain resource with a larger bandwidth has a higher priority than the sub-frequency domain resource with a smaller bandwidth. Optionally, when the bandwidths of multiple sub-frequency domain resources are equal, the sub-frequency domain resource with a higher frequency point has a higher priority than the sub-frequency domain resource with a lower frequency point, or vice versa. It should be understood that if the sub-frequency domain resource with a higher frequency point has a higher priority than the sub-frequency domain resource with a lower frequency point, the spectrum resource utilization can be maximized because the frequency band with the higher frequency point has a larger bandwidth. It should also be understood that if the sub-frequency domain resource with a lower frequency point has a higher priority than the sub-frequency domain resource with a higher frequency point, the interruption of frequency bands with better coverage performance can be reduced because the frequency band with the lower frequency point has less attenuation. Here, the aforementioned frequency point is the center frequency point.

[0390] For example, suppose the highest-priority frequency domain resource includes multiple sub-frequency domain resources, CC1 and CC2. If the bandwidth of CC1 is greater than the bandwidth of CC2, then CC1 has a higher priority than CC2. In one implementation, if the bandwidth of CC1 equals the bandwidth of CC2, and the center frequency of CC1 is higher than the center frequency of CC2, then CC1 has a higher priority than CC2. Alternatively, in another implementation, if the bandwidth of CC1 equals the bandwidth of CC2, and the center frequency of CC1 is higher than the center frequency of CC2, then CC2 has a higher priority than CC1. For ease of understanding, the following explanation will primarily use the example of a higher-frequency sub-frequency domain resource having a higher priority than a lower-frequency sub-frequency domain resource as an illustration.

[0391] Understandably, the determination of the frequency domain resource where the handover time occurs based on the priority of the highest-priority frequency domain resource among at least one first frequency domain resource handover and at least one second frequency domain resource, and the priority of multiple sub-frequency domain resources included in the highest-priority frequency domain resource, can be understood as follows:

[0392] The frequency domain resource where the handover time occurs is the one where the fifth frequency domain resource is not located; that is, the frequency domain resource before or after the handover where the fifth frequency domain resource is not located. The fifth frequency domain resource is the highest-priority frequency domain resource among the frequency domain resources scheduled for information transmission, and the sub-frequency domain resources within the fifth frequency domain resource are the highest-priority sub-frequency domain resources among these sub-frequency domain resources. In other words, it can be stipulated that when the frequency domain resource where the handover time occurs cannot be determined based on the priority of the frequency domain resources, the highest-priority frequency domain resource containing the higher-priority sub-frequency domain resource can be used as the criterion; that is, the one containing the highest-priority frequency domain resource of the lower-priority sub-frequency domain resource is selected as the frequency domain resource where the handover time occurs. For ease of description, this method of determining the location of the handover time will be referred to as Criterion 5.1.

[0393] In one implementation, at least one first frequency domain resource and at least one second frequency domain resource have two highest-priority frequency domain resources. Based on this, the aforementioned highest-priority frequency domain resource belonging to at least one first frequency domain resource and at least one second frequency domain resource can be understood as follows: one of the two highest-priority frequency domain resources belongs to at least one first frequency domain resource, and the other highest-priority frequency domain resource belongs to at least one second frequency domain resource. In other words, one highest-priority frequency domain resource is located before the handover, and the other highest-priority frequency domain resource is located after the handover.

[0394] For example, such as Figure 24 The handover scenario shown is: band pair 1: A→B, band pair 2: C→D, with priority configuration of A=D>B>C. According to the definition in criterion 5.1, band A and band D have the highest priorities, and band A and band D are located before and after the handover, respectively. Band A includes CC1, and band D includes CC2. The bandwidth of CC1 (100MHz) is greater than the bandwidth of CC2 (60MHz), therefore, the priority of CC1 is higher than that of CC2. Using the highest priority band containing the higher-priority sub-frequency domain resource as the criterion, the switch from band (i.e., bands B and D) is selected as the switching period location.

[0395] In another implementation, at least one first frequency domain resource and at least one second frequency domain resource have a highest priority frequency domain resource. The highest priority frequency domain resource belonging to at least one first frequency domain resource and at least one second frequency domain resource can be understood as: this highest priority frequency domain resource belongs to at least one first frequency domain resource and at least one second frequency domain resource. That is, this highest priority frequency domain resource is located both before and after the handover. Optionally, in yet another implementation, it can be specified that there is only one CC (CC) among frequency domain resources of the same priority.

[0396] For example, such as Figure 25 The handover scenario shown is: band pair 1: A→B, band pair 2: C→A, with priority configured as A>B>C. According to the definition in criterion 5.1, band A has the highest priority. Band A is located both before and after the handover. Band A includes CC1 and CC2. CC1's bandwidth of 100MHz is greater than CC2's bandwidth of 60MHz; therefore, CC1 has a higher priority than CC2. Using the highest priority band containing the higher-priority sub-frequency domain resource as the criterion, the switch from band (i.e., bands B and A) is selected as the switching period location.

[0397] For example, such as Figure 26 The handover scenario shown is: band pair 1: A→B, band pair 2: C→A, with priority configured as A>B>C. According to the definition in criterion 5.1, band A has the highest priority. Band A is located both before and after the handover. Band A includes CC1 and CC2, with CC1 having a bandwidth equal to CC2. CC1's frequency is 2.1GHz, and CC2's center frequency is 2.6GHz. Therefore, CC2 has a higher priority than CC1. Using the highest priority band containing the higher-priority sub-frequency domain resource as the criterion, the switch from band (i.e., bands B and A) is selected as the switching period location.

[0398] In this application embodiment, by defining criterion 5.1, the conflict in judging the switching period location is resolved when different CCs under the same band are located at switchfrom / to and only band priority is configured, or when multiple frequency domain resources are all of the highest priority. It also ensures that the switching period location can be determined by referring to the CC priority when switching between CCs.

[0399] Each embodiment of this application can stand alone as an embodiment. Unless otherwise specified or there is a logical conflict, the terminology and / or descriptions between different embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0400] Optionally, in this application, assuming the handover scenario is from band A and band C to band B and band D, the rule for determining which band B and band D forms a band pair with band A, and which forms another band pair with band C, can be followed: the band with the lowest priority is selected to form a band pair with the band with the highest priority for handover. For example, if the frequency domain resource where the handover occurs is the same as the frequency domain resource after the handover, and band A has the highest priority among bands A, B, C, and D, then the band with the lowest priority among bands B and band D is selected to form a band pair with band A for handover. For instance, assuming band B has a lower priority than band D, then band B and band A are selected to form a band pair for handover, and band D and band C are selected to form another band pair for handover. For another example, if the frequency domain resource where the handover time is located is the same as the frequency domain resource before the handover, and band B has the highest priority among bands A, B, C, and D, then the band with the lowest priority among bands A and C is selected to form a band pair with band B for handover. For example, assuming that the priority of band A is lower than the priority of band C, then band B and band A are selected to form a band pair for handover, and band D and band C are selected to form another band pair for handover.

[0401] The following will combine Figures 27-28 The communication device provided in this application will be described in detail.

[0402] It is understood that, in order to achieve the functions in the above embodiments, the communication device includes hardware structures and / or software modules corresponding to each function. Those skilled in the art should readily recognize that, based on the units and method steps described in conjunction with the embodiments disclosed in this application, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed by hardware or by computer software driving hardware depends on the specific application scenario and design constraints of the technical solution.

[0403] Figure 27 and Figure 28 The diagram illustrates the possible structures of communication devices provided in embodiments of this application. These communication devices can be used to implement the functions of terminal devices or access network devices in the above method embodiments, and thus also achieve the beneficial effects of the above method embodiments. In the embodiments of this application, the communication device may be as follows: Figure 1 One of the terminal devices 120a-120j shown can also be as follows: Figure 1 The access network device 110a or 110b shown can also be a module (such as a chip) applied to terminal equipment or access network equipment.

[0404] like Figure 27 As shown, the communication device 2700 includes a processing unit 2710 and a transceiver unit 2720. The communication device 2700 is used to implement the above-mentioned... Figure 15 , Figure 18 , Figure 19 , Figure 21 or Figure 23 The method embodiments shown illustrate the functions of the terminal device or access network device.

[0405] When the communication device 2700 is used to implement Figure 15 When accessing the network device or terminal device in the method embodiment shown, the function is as follows:

[0406] Processing unit 2710 is configured to, when switching from at least one first frequency domain resource to at least one second frequency domain resource, determine the frequency domain resource in which the switching time occurs from at least one first frequency domain resource and at least one second frequency domain resource. The frequency domain resource in which the switching time occurs is the frequency domain resource that does not have the highest priority among the frequency domain resources scheduled for information transmission, and the frequency domain resource in which the switching time occurs is either at least one first frequency domain resource or at least one second frequency domain resource. Understandably, the switching time is the time it takes to switch from at least one first frequency domain resource to at least one second frequency domain resource.

[0407] When the communication device 2700 is used to implement Figure 18 In the method embodiment shown, the access network device functions as follows: Transceiver unit 2720 is used to send first configuration information to the terminal device. The first configuration information is used to configure the priority of at least one first frequency domain resource and at least one second frequency domain resource.

[0408] In one possible implementation, the apparatus further includes a transceiver unit 2720, configured to send second configuration information to a terminal device. The second configuration information is used to configure associated frequency domain resources of the frequency domain resources. The fourth frequency domain resource has a higher priority than the associated frequency domain resources of the fourth frequency domain resource, and the fourth frequency domain resource is one of at least one first frequency domain resource and at least one second frequency domain resource.

[0409] In one possible implementation, the device further includes a transceiver unit 2720 for receiving capability information from a terminal device. This capability information indicates that the terminal device supports concurrent frequency domain resources.

[0410] When the communication device 2700 is used to implement Figure 18 In the method embodiment shown, the terminal device functions as follows: a transceiver unit 2720 is used to receive first configuration information from an access network device. The first configuration information is used to configure the priorities of at least one first frequency domain resource and at least one second frequency domain resource.

[0411] In one possible implementation, the apparatus further includes a transceiver unit 2720, configured to receive second configuration information from an access network device; wherein the second configuration information is used to configure associated frequency domain resources of the frequency domain resources. The fourth frequency domain resource has a higher priority than the associated frequency domain resources of the fourth frequency domain resource, and the fourth frequency domain resource is one of at least one first frequency domain resource and at least one second frequency domain resource.

[0412] In one possible implementation, the apparatus further includes a transceiver unit 2720 for sending capability information to the access network equipment. This capability information is used to indicate to the terminal equipment that it supports concurrent frequency domain resources.

[0413] When the communication device 2700 is used to implement Figure 19 In the method embodiment shown, when the access network device or terminal device functions as follows: Processing unit 2710, when switching from at least one first frequency domain resource to at least one second frequency domain resource, if the terminal device has a first radio frequency chain transmission capability, determines the frequency domain resource where the first switching time occurs based on the priority of the frequency domain resources in a frequency domain resource pair. The frequency domain resource where the first switching time occurs is the frequency domain resource in a frequency domain resource pair that does not have the highest priority. The first switching time is the time for switching frequency domain resources in a frequency domain resource pair. A frequency domain resource pair includes two frequency domain resources; at least one first frequency domain resource switching and at least one second frequency domain resource include at least two frequency domain resource pairs.

[0414] When the communication device 2700 is used to implement Figure 21When the access network device or terminal device in the illustrated method embodiment performs the following function: Processing unit 2710, when switching from at least one first frequency domain resource to at least one second frequency domain resource, determines the frequency domain resource where the switching time occurs from at least one first frequency domain resource and at least one second frequency domain resource. The frequency domain resource where the switching time occurs is determined based on a target frequency domain resource among at least one first frequency domain resource and at least one second frequency domain resource. The target frequency domain resource is one of a plurality of highest-priority frequency domain resources among at least one first frequency domain resource and at least one second frequency domain resource. A portion of the highest-priority frequency domain resources are included in at least one first frequency domain resource, and another portion of the highest-priority frequency domain resources are included in at least one second frequency domain resource. Alternatively, at least one first frequency domain resource and at least one second frequency domain resource have a highest-priority frequency domain resource, and the frequency domain resource where the switching time occurs is one of the frequency domain resources scheduled for information transmission that does not have a highest-priority frequency domain resource, and the frequency domain resource where the switching time occurs is at least one first frequency domain resource or at least one second frequency domain resource. The switching time is the time required to switch from at least one first frequency domain resource to at least one second frequency domain resource.

[0415] When the communication device 2700 is used to achieve Figure 23 When accessing the network device or terminal device in the method embodiment shown, the function is as follows:

[0416] Processing unit 2710 is configured to, when switching from at least one first frequency domain resource to at least one second frequency domain resource, determine the frequency domain resource at the time of the switching based on the priority of the highest-priority frequency domain resource among the at least one first frequency domain resource switching and the priorities of the multiple sub-frequency domain resources included in the highest-priority frequency domain resource. The highest-priority frequency domain resource belongs to at least one first frequency domain resource and also belongs to at least one second frequency domain resource. The frequency domain resource at the time of the switching is either at least one first frequency domain resource or at least one second frequency domain resource. The switching time is the time from at least one first frequency domain resource to at least one second frequency domain resource.

[0417] For a more detailed description of the aforementioned processing unit 2710 and transceiver unit 2720, please refer to [reference needed]. Figure 15 , Figure 18 , Figure 19 , Figure 21 or Figure 23 The relevant descriptions in the method embodiments shown will not be repeated here.

[0418] like Figure 28As shown, the communication device 2800 includes a processor 2810 and an interface circuit 2820. The processor 2810 and the interface circuit 2820 are coupled to each other. It is understood that the interface circuit 2820 can be a transceiver or an input / output interface. Optionally, the communication device 2800 may also include a memory 2830 for storing instructions executed by the processor 2810, or storing input data required by the processor 2810 to execute instructions, or storing data generated after the processor 2810 executes instructions.

[0419] When the communication device 2800 is used to implement Figure 15 , Figure 18 , Figure 19 , Figure 21 or Figure 23 In the method shown, the processor 2810 is used to implement the functions of the processing unit 2710, and the interface circuit 2820 is used to implement the functions of the transceiver unit 2720.

[0420] When the aforementioned communication device is a chip applied to a terminal device, the terminal device chip implements the functions of the terminal device in the above method embodiments. The terminal device chip receives information sent to the terminal device by the access network device through other modules (such as an RF module or antenna) in the terminal device; or, the terminal device chip sends information to other modules (such as an RF module or antenna) in the terminal device, which is information sent by the terminal device to the access network device.

[0421] When the aforementioned communication device is a module applied to an access network device, the access network device module implements the functions of the access network device in the above method embodiments. The access network device module receives information from other modules (such as radio frequency modules or antennas) within the access network device; this information is sent by the terminal device to the access network device. Alternatively, the access network device module sends information to other modules (such as radio frequency modules or antennas) within the access network device; this information is sent by the access network device to the terminal device. Here, the access network device module can be the baseband chip of the access network device, or it can be a CU, DU, or other module, or it can be a device under an open radio access network (O-RAN) architecture, such as an open CU, open DU, etc.

[0422] It is understood that the processor in the embodiments of this application may be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. A general-purpose processor may be a microprocessor or any conventional processor.

[0423] The method steps in the embodiments of this application can be implemented in hardware or in software instructions executable by a processor. The software instructions can consist of corresponding software modules, which can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, registers, hard disks, portable hard disks, CD-ROMs, or any other form of storage medium known in the art. An exemplary storage medium is coupled to a processor, enabling the processor to read information from and write information to the storage medium. The storage medium can also be a component of the processor. The processor and storage medium can reside in an ASIC. Alternatively, the ASIC can reside in an access network device or a terminal device. The processor and storage medium can also exist as discrete components in the access network device or terminal device.

[0424] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of this application are performed entirely or partially. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user equipment, or other programmable device. The computer program or instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program or instructions can be transferred from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium, such as a floppy disk, hard disk, or magnetic tape; it can also be an optical medium, such as a digital video optical disc; or it can be a semiconductor medium, such as a solid-state drive. The computer-readable storage medium may be a volatile or non-volatile storage medium, or may include both types of storage media.

[0425] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application. The order of the process numbers described above does not imply the order of execution; the execution order of each process should be determined by its function and internal logic.

Claims

1. A method for determining the switching time position, characterized in that, The method includes: When switching from at least one first frequency domain resource to at least one second frequency domain resource, the frequency domain resource in which the switching time occurs is determined from the at least one first frequency domain resource and the at least one second frequency domain resource; Wherein, the frequency domain resource where the switching time is located is the frequency domain resource that is scheduled for information transmission but does not have the highest priority, and the frequency domain resource where the switching time is located is either the at least one first frequency domain resource or the at least one second frequency domain resource; the switching time is the time to switch from the at least one first frequency domain resource to the at least one second frequency domain resource. When determining the frequency domain resource where the switching time is located, associated frequency domain resources are excluded. The associated frequency domain resources are those paired with the frequency domain resources scheduled for information transmission but not scheduled for information transmission during the switching time.

2. The method according to claim 1, characterized in that, The frequency domain resource scheduled for information transmission is neither an associated frequency domain resource nor a third frequency domain resource. Wherein, the duration of the time during which information transmission is not scheduled on the third frequency domain resource is greater than or equal to the duration of the switching time.

3. The method according to claim 1, characterized in that, When the frequency domain resource with the highest priority and scheduled for information transmission belongs to at least one first frequency domain resource, the frequency domain resource where the switching time occurs is the at least one second frequency domain resource; or, When the frequency domain resource with the highest priority and scheduled for information transmission belongs to the at least one second frequency domain resource, the frequency domain resource where the switching time is located is the at least one first frequency domain resource.

4. The method according to claim 1, characterized in that, The duration of time during which information transmission is not scheduled on the frequency domain resources that are scheduled for information transmission is less than the duration of the switching time.

5. The method according to claim 1, characterized in that, The at least one first frequency domain resource corresponds to a first time unit, and the at least one second frequency domain resource corresponds to a 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 scheduled information transmission 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 scheduled information transmission on the second time unit and the start position of the second time unit is a second duration, which is less than the duration of the switching time.

6. The method according to any one of claims 1-5, characterized in that, The method further includes: Receive the first configuration information from the access network device; The first configuration information is used to configure the priority of the at least one first frequency domain resource and the at least one second frequency domain resource, wherein the frequency domain resources in the at least one first frequency domain resource and the at least one second frequency domain resource have different priorities.

7. The method according to any one of claims 1-5, characterized in that, The method further includes: Receive second configuration information from the access network device; wherein the second configuration information is used to configure the associated frequency domain resources of the frequency domain resources; The priority of the fourth frequency domain resource is higher than that of the associated frequency domain resource of the fourth frequency domain resource, and the fourth frequency domain resource is one of the at least one first frequency domain resource and the at least one second frequency domain resource.

8. The method according to any one of claims 1-5, characterized in that, The method further includes: Send capability information to access network devices; The capability information is used to indicate whether the terminal device supports concurrent frequency domain resources, and / or to indicate whether the terminal device does not support concurrent frequency domain resources.

9. The method according to claim 8, characterized in that, The capability information is also used to indicate that one of the frequency domain resources expected to be concurrent has a higher priority than the other frequency domain resource that is an associated frequency domain resource.

10. A method for determining the switching time position, characterized in that, The method includes: When switching from at least one first frequency domain resource to at least one second frequency domain resource, if the terminal device has the capability to transmit via a first radio frequency chain, the frequency domain resource in which the first switching time occurs is determined based on the priority of one frequency domain resource over the intermediate frequency domain resource. Wherein, the frequency domain resource in which the first switching time is located is the frequency domain resource that does not have the highest priority in a pair of frequency domain resources; the first switching time is the time for switching frequency domain resources in a pair of frequency domain resources; a pair of frequency domain resources includes two frequency domain resources, and the at least one first frequency domain resource and the at least one second frequency domain resource include at least two pairs of frequency domain resources; the first radio frequency chain transmission capability is that radio frequency chains of different frequency domain resource pairs can transmit independently.

11. The method according to claim 10, characterized in that, The method further includes: When switching from at least one first frequency domain resource to at least one second frequency domain resource, if the terminal device has a second radio frequency chain transmission capability, then the frequency domain resource in which the second switching time is located is determined from the at least one first frequency domain resource and the at least one second frequency domain resource. Wherein, the frequency domain resource in which the second switching time is located is a frequency domain resource that does not have the highest priority among the frequency domain resources scheduled for information transmission, and the frequency domain resource in which the second switching time is located is either the at least one first frequency domain resource or the at least one second frequency domain resource; the second switching time is the time to switch from the at least one first frequency domain resource to the at least one second frequency domain resource.

12. The method according to claim 10 or 11, characterized in that, If the terminal device has the capability to transmit via a first radio frequency chain, then the frequency domain resource in which the first handover time occurs is determined based on the priority of a frequency domain resource over a mid-frequency domain resource, including: When the highest priority frequency domain resource is not located after the handover, and the terminal device has the first radio frequency chain transmission capability, the frequency domain resource where the first handover time is located is determined according to the priority of a frequency domain resource to the intermediate frequency domain resource.

13. The method according to claim 11, characterized in that, The second radio frequency chain transmission capability is non-independent transmission of radio frequency chains for different frequency domain resource pairs.

14. A method for determining the switching time position, characterized in that, The method includes: When switching from at least one first frequency domain resource to at least one second frequency domain resource, the frequency domain resource in which the switching time occurs is determined from the at least one first frequency domain resource and the at least one second frequency domain resource; Wherein, the frequency domain resource in which the switching time is located is determined based on a target frequency domain resource among the at least one first frequency domain resource and the at least one second frequency domain resource. The target frequency domain resource is one of a plurality of highest priority frequency domain resources among the at least one first frequency domain resource and the at least one second frequency domain resource. A portion of the plurality of highest priority frequency domain resources is contained in the at least one first frequency domain resource, and another portion of the plurality of highest priority frequency domain resources is contained in the at least one second frequency domain resource; or, the at least one first frequency domain resource and the at least one second frequency domain resource... Among the frequency domain resources, there is a frequency domain resource with the highest priority. The frequency domain resource where the switching time is located is one of the frequency domain resources scheduled for information transmission that does not have the highest priority. The frequency domain resource where the switching time is located is either the at least one first frequency domain resource or the at least one second frequency domain resource. The switching time is the time to switch from the at least one first frequency domain resource to the at least one second frequency domain resource. When determining the frequency domain resource where the switching time is located, associated frequency domain resources are excluded. The associated frequency domain resources are those paired with the frequency domain resources scheduled for information transmission but not scheduled for information transmission during the switching time.

15. The method according to claim 14, characterized in that, Of the at least one first frequency domain resource and the at least one second frequency domain resource, there are two frequency domain resources with the highest priority; wherein: One of the two highest priority frequency domain resources belongs to the at least one first frequency domain resource, and the other highest priority frequency domain resource belongs to the at least one second frequency domain resource.

16. The method according to claim 15, characterized in that, The target frequency domain resource belongs to the frequency domain resource before the handover, or the target frequency domain resource belongs to the frequency domain resource after the handover.

17. A method for determining the switching time position, characterized in that, The method includes: When switching from at least one first frequency domain resource to at least one second frequency domain resource, the frequency domain resource in which the switching time occurs is determined based on the priority of the frequency domain resource with the highest priority among the at least one first frequency domain resource and the at least one second frequency domain resource and the priority of the multiple sub-frequency domain resources included in the frequency domain resource with the highest priority. Wherein, the frequency domain resource with the highest priority belongs to the at least one first frequency domain resource and also belongs to the at least one second frequency domain resource; the frequency domain resource in which the switching time is located is either the at least one first frequency domain resource or the at least one second frequency domain resource; the switching time is the time to switch from the at least one first frequency domain resource to the at least one second frequency domain resource.

18. The method according to claim 17, characterized in that, Of the at least one first frequency domain resource and the at least one second frequency domain resource, there are two frequency domain resources with the highest priority. The frequency domain resource with the highest priority belongs to the at least one first frequency domain resource and also belongs to the at least one second frequency domain resource, including: One of the two highest priority frequency domain resources belongs to the at least one first frequency domain resource, and the other highest priority frequency domain resource belongs to the at least one second frequency domain resource.

19. The method according to claim 17, characterized in that, Of the at least one first frequency domain resource and the at least one second frequency domain resource, there is a frequency domain resource with the highest priority. The frequency domain resource with the highest priority belongs to the at least one first frequency domain resource and also belongs to the at least one second frequency domain resource, including: The highest priority frequency domain resource belongs to the at least one first frequency domain resource and the at least one second frequency domain resource.

20. The method according to any one of claims 17-19, characterized in that, The sub-frequency domain resources in the highest priority frequency domain resources before the switchover are different from the sub-frequency domain resources in the highest priority frequency domain resources after the switchover.

21. The method according to any one of claims 17-19, characterized in that, Among the multiple sub-frequency domain resources, the sub-frequency domain resources with larger bandwidth have a higher priority than the sub-frequency domain resources with smaller bandwidth.

22. A communication device comprising a unit or module for performing the method as described in any one of claims 1-21.

23. A communication device, characterized in that, The device includes a processor and an interface circuit, wherein the interface circuit is used to receive signals from other communication devices besides the communication device and transmit them to the processor, or to send signals from the processor to other communication devices besides the communication device, and the processor is used to implement the method as described in any one of claims 1-21 through logic circuits or execution code instructions.

24. A computer-readable storage medium, characterized in that, The storage medium stores a computer program or instructions, which, when executed by a communication device, implement the method as described in any one of claims 1-21.

25. A computer program product, characterized in that, Includes computer program code, which, when run on a computer, implements the method of any one of claims 1-21.

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