Configuration of uplink scheduling frequency range

Abstract

Example embodiments relate to configuring a user equipment with an uplink scheduling frequency range. The user equipment can comprise: means for receiving, from a base station, a configuration of an uplink scheduling frequency range, wherein the uplink scheduling frequency range is associated with a reference location or a reference range in a frequency domain, and wherein the uplink scheduling frequency range is confined within a channel bandwidth; and means for performing at least one of: determining at least one maximum power reduction requirement based on the configuration of the uplink scheduling frequency range, or receiving a resource allocation on the uplink scheduling frequency range for transmitting an uplink signal; and means for transmitting, to the base station, the uplink signal within the uplink scheduling frequency range in accordance with at least one of: the at least one maximum power reduction requirement, or the resource allocation on the uplink scheduling frequency range.

Description

Cross-reference to related applications

[0001] This application claims the benefit of FI Application No. 20245326, filed on March 21, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] Various example embodiments generally relate to the field of wireless data transmission. Some example embodiments relate to the configuration and use of uplink scheduling frequency ranges for determining multiple maximum power reduction requirements and / or resource allocation for a user equipment (UE). Background Technology

[0003] In wireless communication, one source of signal distortion is the nonlinearity of the power amplifier applied to the signal to be transmitted. Therefore, in some cases, user equipment (UE) may be allowed to reduce its maximum power, for example, depending on the characteristics of the transmitted signal, such as waveform, modulation order, resource block allocation, or the UE's power level. Summary of the Invention

[0004] This summary is provided to introduce a series of concepts in a simplified form, which will be further described in the detailed description below. This summary is not intended to identify key or essential features of the claimed subject matter, nor is it intended to limit the scope of the claimed subject matter.

[0005] When determining the maximum power reduction (MPR) requirements and / or resource allocation for uplink transmission, the exemplary embodiments of this disclosure can optimize uplink transmission by taking into account both baseband and radio frequency (RF) aspects. This and other benefits can be realized through the features of the independent claims. Further exemplary embodiments are provided in the dependent claims, the specification, and the drawings.

[0006] According to a first aspect, a user equipment is disclosed. The user equipment may include: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the user equipment to at least: receive from a base station a configuration of an uplink scheduling frequency range, wherein the uplink scheduling frequency range is associated with a reference position or reference range in the frequency domain, and wherein the uplink scheduling frequency range is limited within a channel bandwidth; and perform at least one of the following: determining at least one maximum power reduction requirement based on the configuration of the uplink scheduling frequency range, or receiving a resource allocation for transmitting uplink signals in the uplink scheduling frequency range; and transmitting uplink signals to the base station in the uplink scheduling frequency range according to at least one of the following: at least one maximum power reduction requirement, or a resource allocation in the uplink scheduling frequency range.

[0007] According to an example embodiment of the first aspect, the instruction can be configured to cause the user equipment, when executed by the at least one processor, to further determine at least one maximum power reduction requirement based on resource allocation.

[0008] According to an example embodiment of the first aspect, the instruction can be configured to cause the user equipment, when executed by the at least one processor, to receive from the base station a master information block, a system information block, or dedicated signaling that includes an indication of the channel bandwidth of the user equipment.

[0009] According to an example embodiment of the first aspect, the instruction can be configured to, when executed by the at least one processor, cause the user equipment to: determine at least one in-band transmission requirement or at least one out-of-band transmission requirement based on the channel bandwidth of the user equipment.

[0010] According to an example embodiment of the first aspect, the channel bandwidth of the user equipment includes the uplink channel bandwidth of the user equipment.

[0011] According to an example embodiment of the first aspect, the reference location or reference range is substantially located in the middle of the uplink scheduling frequency range or within the uplink scheduling frequency range.

[0012] According to an example embodiment of the first aspect, the configuration of the uplink scheduling frequency range includes an indication of a reference location or reference range.

[0013] According to an example embodiment of the first aspect, the reference location includes at least one of the following: a reference location of the DC component in the frequency domain, a reference location of the DC subcarrier in the frequency domain, the center frequency of the uplink scheduling frequency range, a reference local oscillator frequency, or a reference center frequency of the user equipment used for uplink and downlink communication.

[0014] According to an example embodiment of the first aspect, the instruction can be configured to cause the user equipment, when executed by the at least one processor, to: select a reference location from a predefined frequency range, receive an indication of the reference location in a configuration of the uplink scheduling frequency range, or determine the reference location based on the uplink scheduling frequency range.

[0015] According to an example embodiment of the first aspect, the instruction can be configured to cause the user equipment, when executed by the at least one processor, to select the actual local oscillator location in the frequency domain for up-conversion or down-conversion.

[0016] According to an example embodiment of the first aspect, the actual local oscillator location is a reference location, or the actual local oscillator location is selected from a predefined range around the reference location.

[0017] According to an example embodiment of the first aspect, the instruction can be configured to cause the user equipment, when executed by the at least one processor, to send an indication of the actual local oscillator location to the base station.

[0018] According to an example embodiment of the first aspect, the instruction can be configured to cause the user equipment, when executed by the at least one processor, to: receive a configuration of a downlink scheduling frequency range from a base station, wherein the uplink scheduling frequency range is limited to the downlink scheduling frequency range.

[0019] According to an example embodiment of the first aspect, the instruction can be configured to cause the user equipment, when executed by the at least one processor, to switch between the transmission of uplink signals and the reception of downlink signals within the downlink scheduling frequency range, without changing the actual local oscillator location.

[0020] According to an example embodiment of the first aspect, the instruction can be configured to cause the user equipment, when executed by the at least one processor, to: receive an update of the configuration of the uplink scheduling frequency range or an update of the configuration of the downlink scheduling frequency range from the base station, wherein the update of the configuration of the uplink scheduling frequency range or the update of the configuration of the downlink scheduling frequency range is not associated with any of the following: a change in the reference location, a change in the duration of the protection period between the transmission of the uplink signal and the reception of the downlink signal, or the introduction of the protection period.

[0021] According to an example embodiment of the first aspect, the instruction can be configured to cause the user equipment, when executed by the at least one processor, to: receive an update of the configuration of the uplink scheduling frequency range or an update of the configuration of the downlink scheduling frequency range from the base station, wherein the update of the configuration of the uplink scheduling frequency range or the update of the configuration of the downlink scheduling frequency range is associated with a change of reference location and one of the following: an increase in the duration of a protection period between the transmission of uplink signals and the reception of downlink signals or the introduction of such protection period.

[0022] According to the example embodiment of the first aspect, the transmission bandwidth of the uplink signal is different from the reception bandwidth of the downlink signal.

[0023] According to an example embodiment of the first aspect, the uplink scheduling frequency range or the downlink scheduling frequency range includes a continuous range of physical resource blocks.

[0024] According to an example embodiment of the first aspect, the physical resource blocks of the uplink scheduling frequency range are a subset of the physical resource blocks of the channel bandwidth, or the physical resource blocks of the downlink scheduling frequency range are a subset of the physical resource blocks of the channel bandwidth, or the physical resource blocks of the downlink scheduling range are the same as the physical resource blocks of the channel bandwidth, or wherein the physical resource blocks of the uplink scheduling frequency range or the physical resource blocks of the downlink scheduling frequency range are selected from a configuration subset of the physical resource blocks of the channel bandwidth.

[0025] According to an example embodiment of the first aspect, the instruction can be configured to cause the user equipment, when executed by the at least one processor, to further determine at least one maximum power reduction requirement based on a reference location or the actual local oscillator location.

[0026] According to an example embodiment of the first aspect, at least one maximum power reduction requirement includes a maximum power reduction MPR value or an additional maximum power reduction A-MPR value.

[0027] According to an example embodiment of the first aspect, the instruction can be configured to, when executed by the at least one processor, cause the user equipment to: send an indication to the base station of the user equipment's maximum uplink scheduling frequency range or maximum downlink scheduling frequency range, wherein the user equipment's maximum uplink scheduling frequency range or maximum downlink scheduling frequency range is narrower than the channel bandwidth.

[0028] According to a second aspect, a base station is disclosed. The base station may include: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause a user equipment to at least: send to the user equipment at least one of the following: configuration of an uplink scheduling frequency range for the user equipment, wherein the uplink scheduling frequency range is associated with a reference position or reference range in the frequency domain, and wherein the uplink scheduling frequency range is limited within the channel bandwidth; or resource allocation for transmitting uplink signals in the uplink scheduling frequency range; and receive from the user equipment uplink signals transmitted in the uplink scheduling frequency range according to at least one of the following: at least one maximum power reduction requirement, or resource allocation in the uplink scheduling frequency range.

[0029] According to an example embodiment of the second aspect, the instruction can be configured to, when executed by the at least one processor, cause the base station to: receive from the user equipment an indication of the user equipment's maximum uplink scheduling frequency range or maximum downlink scheduling frequency range, wherein the user equipment's maximum uplink scheduling frequency range or maximum downlink scheduling frequency range is narrower than the channel bandwidth; and determine an uplink scheduling frequency range such that the uplink scheduling frequency range is within the user equipment's maximum uplink scheduling frequency range, or determine a downlink scheduling frequency range such that the downlink scheduling frequency range is within the user equipment's maximum downlink scheduling frequency range.

[0030] According to a third aspect, a method is disclosed. The method may include: receiving from a base station a configuration of an uplink scheduling frequency range, wherein the uplink scheduling frequency range is associated with a reference position or reference range in the frequency domain, and wherein the uplink scheduling frequency range is limited within a channel bandwidth; and performing at least one of the following: determining at least one maximum power reduction requirement based on the configuration of the uplink scheduling frequency range, or receiving a resource allocation for transmitting uplink signals within the uplink scheduling frequency range; and transmitting uplink signals to the base station within the uplink scheduling frequency range according to at least one of the following: at least one maximum power reduction requirement, or a resource allocation within the uplink scheduling frequency range. The method may be performed by a user equipment.

[0031] According to an example embodiment of the third aspect, the method includes: further determining at least one maximum power reduction requirement based on resource allocation.

[0032] According to an example embodiment of the third aspect, the method includes: receiving from a base station a master information block, a system information block, or dedicated signaling that includes an indication of the channel bandwidth of a user equipment.

[0033] According to an example embodiment of the third aspect, the method includes: determining at least one in-band transmission requirement or at least one out-of-band transmission requirement based on the channel bandwidth of the user equipment.

[0034] According to an example embodiment of the third aspect, the channel bandwidth of the user equipment includes the uplink channel bandwidth of the user equipment.

[0035] According to an example embodiment of the third aspect, the reference location or reference range is substantially located in the middle of the uplink scheduling frequency range or within the uplink scheduling frequency range.

[0036] According to an example embodiment of the third aspect, the configuration of the uplink scheduling frequency range includes an indication of a reference location or reference range.

[0037] According to an example embodiment of the third aspect, the reference location includes at least one of the following: a reference location of the DC component in the frequency domain, a reference location of the DC subcarrier in the frequency domain, the center frequency of the uplink scheduling frequency range, a reference local oscillator frequency, or a reference center frequency of the user equipment used for uplink and downlink communication.

[0038] According to an example embodiment of the third aspect, the method includes: selecting a reference location from a predefined frequency range, receiving an indication of the reference location in a configuration of the uplink scheduling frequency range, or determining the reference location based on the uplink scheduling frequency range.

[0039] According to an example embodiment of the third aspect, the method includes: selecting the actual local oscillator location in the frequency domain for up-conversion or down-conversion.

[0040] According to an example embodiment of the third aspect, the actual local oscillator location is a reference location, or the actual local oscillator location is selected from a predefined range around the reference location.

[0041] According to an example embodiment of the third aspect, the method includes: sending an indication of the actual location of the local oscillator to the base station.

[0042] According to an example embodiment of the third aspect, the method includes: receiving a configuration of a downlink scheduling frequency range from a base station, wherein the uplink scheduling frequency range is limited to the downlink scheduling frequency range.

[0043] According to an example embodiment of the third aspect, the method includes: switching between uplink signal transmission and downlink signal reception within a downlink scheduling frequency range without changing the actual local oscillator location.

[0044] According to an example embodiment of the third aspect, the method includes: receiving an update of the configuration of an uplink scheduling frequency range or an update of the configuration of a downlink scheduling frequency range from a base station, wherein the update of the configuration of the uplink scheduling frequency range or the update of the configuration of the downlink scheduling frequency range is not associated with any of the following: a change in reference location, a change in the duration of a protection period between the transmission of an uplink signal and the reception of a downlink signal, or the introduction of such protection period.

[0045] According to an example embodiment of the third aspect, the method includes: receiving an update of the configuration of an uplink scheduling frequency range or an update of the configuration of a downlink scheduling frequency range from a base station, wherein the update of the configuration of the uplink scheduling frequency range or the update of the configuration of the downlink scheduling frequency range is associated with a change of reference location and one of the following: an increase in the duration of a protection period between the transmission of an uplink signal and the reception of a downlink signal or the introduction of such protection period.

[0046] According to the example embodiment of the third aspect, the transmission bandwidth of the uplink signal is different from the reception bandwidth of the downlink signal.

[0047] According to an example embodiment of the third aspect, the uplink scheduling frequency range or the downlink scheduling frequency range includes a continuous range of physical resource blocks.

[0048] According to an example embodiment of the third aspect, the physical resource blocks of the uplink scheduling frequency range are a subset of the physical resource blocks of the channel bandwidth, or the physical resource blocks of the downlink scheduling frequency range are a subset of the physical resource blocks of the channel bandwidth, or the physical resource blocks of the downlink scheduling range are the same as the physical resource blocks of the channel bandwidth, or wherein the physical resource blocks of the uplink scheduling frequency range or the physical resource blocks of the downlink scheduling frequency range are selected from a configuration subset of the physical resource blocks of the channel bandwidth.

[0049] According to an example embodiment of the third aspect, the method includes: further determining at least one maximum power reduction requirement based on a reference location or the actual local oscillator location.

[0050] According to an example embodiment of the third aspect, at least one maximum power reduction requirement includes a maximum power reduction MPR value or an additional maximum power reduction A-MPR value.

[0051] According to an example embodiment of the third aspect, the method includes: sending an indication to a base station of the maximum uplink scheduling frequency range or the maximum downlink scheduling frequency range of a user equipment, wherein the maximum uplink scheduling frequency range or the maximum downlink scheduling frequency range of the user equipment is narrower than the channel bandwidth.

[0052] According to a fourth aspect, a method is disclosed. The method may include: sending to a user equipment at least one of the following: configuration of an uplink scheduling frequency range for the user equipment, wherein the uplink scheduling frequency range is associated with a reference position or reference range in the frequency domain, and wherein the uplink scheduling frequency range is limited within a channel bandwidth; or resource allocation for transmitting uplink signals within the uplink scheduling frequency range; and receiving from the user equipment at least one of the following: at least one maximum power reduction requirement, or resource allocation within the uplink scheduling frequency range. The method may be performed by a base station.

[0053] According to an example embodiment of the fourth aspect, the method includes: receiving from a user equipment an indication of the user equipment's maximum uplink scheduling frequency range or maximum downlink scheduling frequency range, wherein the user equipment's maximum uplink scheduling frequency range or maximum downlink scheduling frequency range is narrower than the channel bandwidth; and determining an uplink scheduling frequency range such that the uplink scheduling frequency range is within the user equipment's maximum uplink scheduling frequency range, or determining a downlink scheduling frequency range such that the downlink scheduling frequency range is within the user equipment's maximum downlink scheduling frequency range.

[0054] According to a fifth aspect, a user equipment is disclosed. The user equipment may include: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the user equipment to at least: receive from a base station a configuration of an uplink scheduling frequency range, wherein the uplink scheduling frequency range is associated with a reference position or reference range in the frequency domain, and wherein the uplink scheduling frequency range is limited within a channel bandwidth; determine at least one maximum power reduction requirement based on the configuration of the uplink scheduling frequency range; and transmit an uplink signal to the base station within the uplink scheduling frequency range according to the at least one maximum power reduction requirement.

[0055] According to an example embodiment of the fifth aspect, the instruction can be configured to cause a user device when executed by the at least one processor:

[0056] According to an example embodiment of the fifth aspect, the instruction can be configured to cause the user equipment, when executed by the at least one processor, to: receive a configuration of a downlink scheduling frequency range from the base station, wherein the uplink scheduling frequency range is limited to the downlink scheduling frequency range.

[0057] According to an example embodiment of the fifth aspect, the instruction can be configured to, when executed by the at least one processor, cause the user equipment to: receive a resource allocation for transmitting uplink signals in an uplink scheduling frequency range; and further determine at least one maximum power reduction requirement based on the resource allocation.

[0058] According to an example embodiment of the fifth aspect, the instruction can be configured to cause the user equipment, when executed by the at least one processor, to receive from the base station a master information block, a system information block, or dedicated signaling that includes an indication of the channel bandwidth of the user equipment.

[0059] According to an example embodiment of the fifth aspect, the instruction can be configured to, when executed by the at least one processor, cause the user equipment to: determine at least one in-band transmission requirement or at least one out-of-band transmission requirement based on the channel bandwidth of the user equipment.

[0060] According to an example embodiment of the fifth aspect, the channel bandwidth of the user equipment includes the uplink channel bandwidth and the downlink channel bandwidth of the user equipment, wherein the uplink channel bandwidth is equal to the downlink channel bandwidth.

[0061] According to an example embodiment of the fifth aspect, the reference location or reference range is substantially located in the middle of the uplink scheduling frequency range or within the uplink scheduling frequency range.

[0062] According to an example embodiment of the fifth aspect, the configuration of the uplink scheduling frequency range and / or downlink scheduling frequency range includes an indication of a reference location or reference range.

[0063] According to an example embodiment of the fifth aspect, the reference location includes at least one of the following: a reference location of the DC component in the frequency domain, a reference location of the DC subcarrier in the frequency domain, the center frequency of the uplink scheduling frequency range, a reference local oscillator frequency, or a reference center frequency of the user equipment used for uplink and downlink communication.

[0064] According to an example embodiment of the fifth aspect, the instruction can be configured to, when executed by the at least one processor, cause the user equipment to: select a reference location from a predefined frequency range, receive an indication of the reference location in a configuration of the uplink scheduling frequency range, and determine the reference location based on the uplink scheduling frequency range.

[0065] According to an example embodiment of the fifth aspect, the instruction can be configured to cause the user equipment, when executed by the at least one processor, to select the actual local oscillator location in the frequency domain for up-conversion and down-conversion.

[0066] According to an example embodiment of the fifth aspect, the actual local oscillator location is a reference location, or the actual local oscillator location is selected from a predefined range of physical resource blocks surrounding the reference location.

[0067] According to an example embodiment of the fifth aspect, the instruction can be configured to cause the user equipment, when executed by the at least one processor, to send an indication of the actual local oscillator location to the base station.

[0068] According to an example embodiment of the fifth aspect, the instruction can be configured to cause the user equipment, when executed by the at least one processor, to switch between the transmission of uplink signals and the reception of downlink signals within the downlink scheduling frequency range, without changing the actual local oscillator location.

[0069] According to an example embodiment of the fifth aspect, the instruction can be configured to cause the user equipment, when executed by the at least one processor, to: receive from the base station an update to the configuration of the uplink scheduling frequency range and / or an update to the configuration of the downlink scheduling frequency range, wherein the update to the configuration of the uplink scheduling frequency range and the update to the configuration of the downlink scheduling frequency range are not associated with any of the following: a change in the reference location, a change in the duration of the protection period between the transmission of the uplink signal and the reception of the downlink signal, or the introduction of the protection period.

[0070] According to an example embodiment of the fifth aspect, the instruction can be configured to cause the user equipment, when executed by the at least one processor, to: receive from the base station an update to the configuration of the uplink scheduling frequency range and / or an update to the configuration of the downlink scheduling frequency range, wherein the update to the configuration of the uplink scheduling frequency range and the update to the configuration of the downlink scheduling frequency range are associated with a change in the reference location and one of the following: an increase in the duration of a protection period between the transmission of uplink signals and the reception of downlink signals or the introduction of such protection period.

[0071] According to the example embodiment of the fifth aspect, the transmission bandwidth of the uplink signal is different from the reception bandwidth of the downlink signal.

[0072] According to an example embodiment of the fifth aspect, the uplink scheduling frequency range or the downlink scheduling frequency range includes a continuous range of physical resource blocks.

[0073] According to an example embodiment of the fifth aspect, the physical resource blocks of the uplink scheduling frequency range are a subset of the physical resource blocks of the channel bandwidth, or the physical resource blocks of the downlink scheduling frequency range are a subset of the physical resource blocks of the channel bandwidth, or the physical resource blocks of the downlink scheduling range are the same as the physical resource blocks of the channel bandwidth, or the physical resource blocks of the uplink scheduling frequency range or the physical resource blocks of the downlink scheduling frequency range are selected from a configuration subset of the physical resource blocks of the channel bandwidth.

[0074] According to an example embodiment of the fifth aspect, the instruction can be configured to cause the user equipment, when executed by the at least one processor, to further determine at least one maximum power reduction requirement based on a reference location or the actual local oscillator location.

[0075] According to an example embodiment of the fifth aspect, at least one maximum power reduction requirement includes a maximum power reduction MPR value or an additional maximum power reduction A-MPR value.

[0076] According to an example embodiment of the fifth aspect, the instruction can be configured to cause the user equipment, when executed by the at least one processor, to: send an indication to the base station of the user equipment's maximum uplink scheduling frequency range or maximum downlink scheduling frequency range, wherein the user equipment's maximum uplink scheduling frequency range or maximum downlink scheduling frequency range is narrower than the channel bandwidth.

[0077] According to a sixth aspect, a base station is disclosed. The base station may include: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause a user equipment to at least: send to the user equipment a configuration for an uplink scheduling frequency range for the user equipment, wherein the uplink scheduling frequency range is associated with a reference position or reference range in the frequency domain, and wherein the uplink scheduling frequency range is limited within the channel bandwidth; and receive from the user equipment a signal transmitted within the uplink scheduling frequency range according to at least one maximum power reduction requirement.

[0078] According to an example embodiment of the sixth aspect, the instruction can be configured to, when executed by the at least one processor, cause the base station to: receive from the user equipment an indication of the user equipment's maximum uplink scheduling frequency range or maximum downlink scheduling frequency range, wherein the user equipment's maximum uplink scheduling frequency range or maximum downlink scheduling frequency range is narrower than the channel bandwidth; determine an uplink scheduling frequency range such that the uplink scheduling frequency range is within the user equipment's maximum uplink scheduling frequency range, or determine a downlink scheduling frequency range such that the downlink scheduling frequency range is within the user equipment's maximum downlink scheduling frequency range.

[0079] According to a seventh aspect, a method is disclosed. The method may include: receiving from a base station a configuration of an uplink scheduling frequency range, wherein the uplink scheduling frequency range is associated with a reference position or reference range in the frequency domain, and wherein the uplink scheduling frequency range is limited within a channel bandwidth; determining at least one maximum power reduction requirement based on the configuration of the uplink scheduling frequency range; and transmitting an uplink signal to the base station within the uplink scheduling frequency range according to the at least one maximum power reduction requirement. The method may be performed by a user equipment.

[0080] According to an example embodiment of the seventh aspect, the method may include: receiving a configuration of a downlink scheduling frequency range from a base station, wherein the uplink scheduling frequency range is limited to the downlink scheduling frequency range.

[0081] According to an example embodiment of the seventh aspect, the method may include: receiving a resource allocation for transmitting uplink signals in an uplink scheduling frequency range; and further determining at least one maximum power reduction requirement based on the resource allocation.

[0082] According to an example embodiment of the seventh aspect, the method may include: receiving from a base station a master information block, a system information block, or dedicated signaling that includes an indication of the channel bandwidth of a user equipment.

[0083] According to an example embodiment of the seventh aspect, the method may include: determining at least one in-band transmission requirement or at least one out-of-band transmission requirement based on the channel bandwidth of the user equipment.

[0084] According to an example embodiment of the seventh aspect, the channel bandwidth of the user equipment includes the uplink channel bandwidth and the downlink channel bandwidth of the user equipment, wherein the uplink channel bandwidth is equal to the downlink channel bandwidth.

[0085] According to an example embodiment of the seventh aspect, the reference location or reference range is substantially located in the middle of the uplink scheduling frequency range or within the uplink scheduling frequency range.

[0086] According to an example embodiment of the seventh aspect, the configuration of the uplink scheduling frequency range and / or downlink scheduling frequency range includes an indication of a reference location or reference range.

[0087] According to an example embodiment of the seventh aspect, the reference location includes at least one of the following: a reference location of the DC component in the frequency domain, a reference location of the DC subcarrier in the frequency domain, the center frequency of the uplink scheduling frequency range, a reference local oscillator frequency, or a reference center frequency of the user equipment used for uplink and downlink communication.

[0088] According to an example embodiment of the seventh aspect, the method may include: selecting a reference location from a predefined frequency range, receiving an indication of the reference location in a configuration of the uplink scheduling frequency range, and determining the reference location based on the uplink scheduling frequency range.

[0089] According to an example embodiment of the seventh aspect, the method may include: selecting the actual local oscillator location in the frequency domain for up-conversion and down-conversion.

[0090] According to an example embodiment of the seventh aspect, the actual local oscillator location is a reference location, or the actual local oscillator location is selected from a predefined range of physical resource blocks surrounding the reference location.

[0091] According to an example embodiment of the seventh aspect, the method may include: sending an indication of the actual location of the local oscillator to the base station.

[0092] According to an example embodiment of the seventh aspect, the method may include: switching between uplink signal transmission and downlink signal reception within a downlink scheduling frequency range without changing the actual local oscillator location.

[0093] According to an example embodiment of the seventh aspect, the method may include: receiving from a base station an update to the configuration of an uplink scheduling frequency range and / or an update to the configuration of a downlink scheduling frequency range, wherein the update to the configuration of the uplink scheduling frequency range and the update to the configuration of the downlink scheduling frequency range are not associated with any of the following: a change in the reference location, a change in the duration of a protection period between the transmission of an uplink signal and the reception of a downlink signal, or the introduction of such protection period.

[0094] According to an example embodiment of the seventh aspect, the method may include: receiving from a base station an update to the configuration of an uplink scheduling frequency range and / or an update to the configuration of a downlink scheduling frequency range, wherein the update to the configuration of the uplink scheduling frequency range and the update to the configuration of the downlink scheduling frequency range are associated with a change in a reference location and one of the following: an increase in the duration of a protection period between the transmission of an uplink signal and the reception of a downlink signal or the introduction of such a protection period.

[0095] According to the example embodiment of the seventh aspect, the transmission bandwidth of the uplink signal is different from the reception bandwidth of the downlink signal.

[0096] According to an example embodiment of the seventh aspect, the uplink scheduling frequency range or the downlink scheduling frequency range includes a continuous range of physical resource blocks.

[0097] According to an example embodiment of the seventh aspect, the physical resource blocks of the uplink scheduling frequency range are a subset of the physical resource blocks of the channel bandwidth, or the physical resource blocks of the downlink scheduling frequency range are a subset of the physical resource blocks of the channel bandwidth, or the physical resource blocks of the downlink scheduling range are the same as the physical resource blocks of the channel bandwidth, or the physical resource blocks of the uplink scheduling frequency range or the physical resource blocks of the downlink scheduling frequency range are selected from a configuration subset of the physical resource blocks of the channel bandwidth.

[0098] According to an example embodiment of the seventh aspect, the method may include: further determining at least one maximum power reduction requirement based on a reference location or the actual local oscillator location.

[0099] According to an example embodiment of the fifth aspect, at least one maximum power reduction requirement includes a maximum power reduction MPR value or an additional maximum power reduction A-MPR value.

[0100] According to an example embodiment of the seventh aspect, the method may include: sending an indication to a base station of the maximum uplink scheduling frequency range or the maximum downlink scheduling frequency range of the user equipment, wherein the maximum uplink scheduling frequency range or the maximum downlink scheduling frequency range of the user equipment is narrower than the channel bandwidth.

[0101] According to the eighth aspect, a method is disclosed. The method may include: sending to a user equipment (UE) a configuration for an uplink scheduling frequency range for the UE, wherein the uplink scheduling frequency range is associated with a reference position or reference range in the frequency domain, and wherein the uplink scheduling frequency range is limited within the channel bandwidth; and receiving from the UE a signal transmitted within the uplink scheduling frequency range according to at least one maximum power reduction requirement. The method may be performed by a base station.

[0102] According to an example embodiment of the eighth aspect, the method includes: receiving from a user equipment an indication of the user equipment's maximum uplink scheduling frequency range or maximum downlink scheduling frequency range, wherein the user equipment's maximum uplink scheduling frequency range or maximum downlink scheduling frequency range is narrower than the channel bandwidth; and determining an uplink scheduling frequency range such that the uplink scheduling frequency range is within the user equipment's maximum uplink scheduling frequency range, or determining a downlink scheduling frequency range such that the downlink scheduling frequency range is within the user equipment's maximum downlink scheduling frequency range.

[0103] According to a ninth aspect, a user equipment is disclosed. The user equipment may include: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the user equipment to at least: receive from a base station a configuration of an uplink scheduling frequency range, wherein the uplink scheduling frequency range is associated with a reference position or reference range in the frequency domain, and wherein the uplink scheduling frequency range is limited within a channel bandwidth; determine at least one maximum power reduction requirement based on the configuration of the uplink scheduling frequency range; transmit an uplink signal to the base station within the uplink scheduling frequency range according to the at least one maximum power reduction requirement; and switch between transmission of the uplink signal within the uplink scheduling frequency range and reception of a downlink signal within the channel bandwidth, wherein the switching includes adaptation of at least one parameter of baseband processing of the uplink signal or the downlink signal, and wherein the adaptation of at least one parameter is based on the bandwidth of the uplink signal and / or the bandwidth of the downlink signal.

[0104] According to an example embodiment of the ninth aspect, the bandwidth of the uplink signal includes the maximum bandwidth of the uplink signal.

[0105] According to an example embodiment of the ninth aspect, the instruction can be configured to, when executed by the at least one processor, cause the user equipment to: receive a resource allocation for transmitting uplink signals in an uplink scheduling frequency range; and further determine at least one maximum power reduction requirement based on the resource allocation.

[0106] According to an example embodiment of the ninth aspect, the instruction can be configured to, when executed by the at least one processor, cause the user equipment to: transmit an uplink signal at the same local oscillator frequency within the uplink scheduling frequency range and receive a downlink signal within the channel bandwidth or downlink scheduling frequency range.

[0107] According to an example embodiment of the ninth aspect, at least one parameter of the baseband processing of the uplink signal or downlink signal includes the sampling rate of the digital-to-analog converter or analog-to-digital converter.

[0108] According to an example embodiment of the ninth aspect, a digital-to-analog converter is configured for transmitting an uplink signal, an analog-to-digital converter is configured for receiving a downlink signal, the bandwidth of the uplink signal is narrower than the bandwidth of the downlink signal, and the sampling rate of the digital-to-analog converter is lower than the sampling rate of the analog-to-digital converter.

[0109] According to an example embodiment of the ninth aspect, at least one parameter of the baseband processing of the uplink signal or downlink signal includes at least one parameter of the channelization filter of the user equipment, and the adaptation of at least one parameter of the channelization filter is configured to change the width of the transition band of the channelization filter.

[0110] According to an example embodiment of the ninth aspect, the channelization filter includes a digital filter, and the transition bandwidth of the channelization filter for processing uplink signals is wider than that for processing downlink signals.

[0111] According to an example embodiment of the ninth aspect, the bandwidth of the uplink signal is narrower than that of the downlink signal, and the transition bandwidth of the channelization filter used to process the uplink signal is wider than that used to process the downlink signal.

[0112] According to an example embodiment of the ninth aspect, the instruction can be configured to, when executed by the at least one processor, cause the user equipment to: receive from the base station a main information block or a system information block including an indication of the channel bandwidth of the user equipment.

[0113] According to an example embodiment of the ninth aspect, the instruction can be configured to, when executed by the at least one processor, cause the user equipment to: determine at least one in-band transmission requirement or at least one out-of-band transmission requirement based on the channel bandwidth of the user equipment.

[0114] According to an example embodiment of the ninth aspect, the reference position or reference range is substantially located in the middle of the uplink scheduling frequency range or within the uplink scheduling frequency range.

[0115] According to an example embodiment of the ninth aspect, the configuration of the uplink scheduling frequency range includes an indication of a reference location or reference range.

[0116] According to an example embodiment of the ninth aspect, the reference location includes at least one of the following: a reference location of the DC component in the frequency domain, a reference location of the DC subcarrier in the frequency domain, the center frequency of the uplink scheduling frequency range, a reference local oscillator frequency, or a reference center frequency of the user equipment used for uplink and downlink communication.

[0117] According to an example embodiment of the ninth aspect, the instruction can be configured to, when executed by the at least one processor, cause the user equipment to: select the actual local oscillator location in the frequency domain for upconversion of the uplink signal and downconversion of the downlink signal.

[0118] According to an example embodiment of the ninth aspect, the actual local oscillator location is a reference location, or the actual local oscillator location is selected from a predefined range around the reference location.

[0119] According to an example embodiment of the ninth aspect, the instruction can be configured to cause the user equipment, when executed by the at least one processor, to send an indication of the actual local oscillator location to the base station.

[0120] According to an example embodiment of the ninth aspect, the instruction can be configured to cause the user equipment, when executed by the at least one processor, to: receive a configuration of a downlink scheduling frequency range from a base station, wherein the uplink scheduling frequency range is limited to the downlink scheduling frequency range.

[0121] According to an example embodiment of the ninth aspect, the instruction can be configured to cause the user equipment, when executed by the at least one processor, to: receive an update of the configuration of the uplink scheduling frequency range or an update of the configuration of the downlink scheduling frequency range from the base station, wherein the update of the configuration of the uplink scheduling frequency range or the update of the configuration of the downlink scheduling frequency range is not associated with any of the following: a change in the reference location, a change in the duration of the protection period between the transmission of the uplink signal and the reception of the downlink signal, or the introduction of the protection period.

[0122] According to an example embodiment of the ninth aspect, the instruction can be configured to cause the user equipment, when executed by the at least one processor, to: receive an update of the configuration of the uplink scheduling frequency range or an update of the configuration of the downlink scheduling frequency range from the base station, wherein the update of the configuration of the uplink scheduling frequency range or the update of the configuration of the downlink scheduling frequency range is associated with a change of reference location and one of the following: an increase in the duration of a protection period between the transmission of uplink signals and the reception of downlink signals or the introduction of such protection period.

[0123] According to an example embodiment of the ninth aspect, the uplink scheduling frequency range or the downlink scheduling frequency range includes a continuous range of physical resource blocks.

[0124] According to an example embodiment of the ninth aspect, the physical resource blocks of the uplink scheduling frequency range are a subset of the physical resource blocks of the channel bandwidth, or the physical resource blocks of the downlink scheduling frequency range are a subset of the physical resource blocks of the channel bandwidth, or the physical resource blocks of the downlink scheduling range are the same as the physical resource blocks of the channel bandwidth, or the physical resource blocks of the uplink scheduling frequency range or the physical resource blocks of the downlink scheduling frequency range are selected from a configuration subset of the physical resource blocks of the channel bandwidth.

[0125] According to an example embodiment of the ninth aspect, the instruction can be configured to cause the user equipment, when executed by the at least one processor, to further determine at least one maximum power reduction requirement based on a reference location or the actual local oscillator location.

[0126] According to an example embodiment of the ninth aspect, at least one maximum power reduction requirement includes a maximum power reduction MPR value or an additional maximum power reduction A-MPR value.

[0127] According to an example embodiment of the ninth aspect, the instruction can be configured to, when executed by the at least one processor, cause the user equipment to: send an indication to the base station of the user equipment's maximum uplink scheduling frequency range or maximum downlink scheduling frequency range, wherein the user equipment's maximum uplink scheduling frequency range or maximum downlink scheduling frequency range is narrower than the channel bandwidth.

[0128] According to a tenth aspect, a method is disclosed. The method may include: receiving from a base station a configuration of an uplink scheduling frequency range, wherein the uplink scheduling frequency range is associated with a reference position or reference range in the frequency domain, and wherein the uplink scheduling frequency range is limited within a channel bandwidth; determining at least one maximum power reduction requirement based on the configuration of the uplink scheduling frequency range; transmitting an uplink signal to the base station within the uplink scheduling frequency range according to the at least one maximum power reduction requirement; and switching between transmission of the uplink signal within the uplink scheduling frequency range and reception of a downlink signal within the channel bandwidth, wherein the switching includes adaptation of at least one parameter of baseband processing of the uplink signal or the downlink signal, and wherein the adaptation of at least one parameter is based on the bandwidth of the uplink signal and / or the bandwidth of the downlink signal. The method may be performed by a user equipment.

[0129] According to an example embodiment of the tenth aspect, the bandwidth of the uplink signal includes the maximum bandwidth of the uplink signal.

[0130] According to an example embodiment of the tenth aspect, the method includes: receiving a resource allocation for transmitting uplink signals in an uplink scheduling frequency range; and further determining at least one maximum power reduction requirement based on the resource allocation.

[0131] According to an example embodiment of the tenth aspect, the method includes: transmitting an uplink signal at the same local oscillator frequency within an uplink scheduling frequency range and receiving a downlink signal within a channel bandwidth or a downlink scheduling frequency range.

[0132] According to an example embodiment of the tenth aspect, at least one parameter of the baseband processing of the uplink signal or downlink signal includes the sampling rate of the digital-to-analog converter or analog-to-digital converter.

[0133] According to an example embodiment of the tenth aspect, a digital-to-analog converter is configured for transmitting an uplink signal, an analog-to-digital converter is configured for receiving a downlink signal, the bandwidth of the uplink signal is narrower than the bandwidth of the downlink signal, and the sampling rate of the digital-to-analog converter is lower than the sampling rate of the analog-to-digital converter.

[0134] According to an example embodiment of the tenth aspect, at least one parameter of the baseband processing of the uplink signal or downlink signal includes at least one parameter of the channelization filter of the user equipment, and the adaptation of at least one parameter of the channelization filter is configured to change the width of the transition band of the channelization filter.

[0135] According to an example embodiment of the tenth aspect, the channelization filter includes a digital filter, and the transition bandwidth of the channelization filter for processing uplink signals is wider than that for processing downlink signals.

[0136] According to an example embodiment of the tenth aspect, the bandwidth of the uplink signal is narrower than that of the downlink signal, and the transition bandwidth of the channelization filter used to process the uplink signal is wider than that used to process the downlink signal.

[0137] According to an example embodiment of the tenth aspect, the method includes: receiving from a base station a master information block or a system information block including an indication of the channel bandwidth of a user equipment.

[0138] According to an example embodiment of the tenth aspect, the method includes: determining at least one in-band transmission requirement or at least one out-of-band transmission requirement based on the channel bandwidth of the user equipment.

[0139] According to an example embodiment of the tenth aspect, the reference location or reference range is substantially located in the middle of the uplink scheduling frequency range or within the uplink scheduling frequency range.

[0140] According to an example embodiment of the tenth aspect, the configuration of the uplink scheduling frequency range includes an indication of a reference location or reference range.

[0141] According to an example embodiment of the tenth aspect, the reference location includes at least one of the following: a reference location of a DC component in the frequency domain, a reference location of a DC subcarrier in the frequency domain, the center frequency of an uplink scheduling frequency range, a reference local oscillator frequency, or a reference center frequency of a user equipment used for uplink and downlink communication.

[0142] According to an example embodiment of the tenth aspect, the method includes: selecting an actual local oscillator location in the frequency domain by upconverting an uplink signal and downconverting a downlink signal.

[0143] According to an example embodiment of the tenth aspect, the actual local oscillator location is a reference location, or the actual local oscillator location is selected from a predefined range around the reference location.

[0144] According to an example embodiment of the tenth aspect, the method includes: sending an indication of the actual location of a local oscillator to a base station.

[0145] According to an example embodiment of the tenth aspect, the method includes: receiving a configuration of a downlink scheduling frequency range from a base station, wherein the uplink scheduling frequency range is limited to the downlink scheduling frequency range.

[0146] According to an example embodiment of the tenth aspect, the method includes: receiving an update of the configuration of an uplink scheduling frequency range or an update of the configuration of a downlink scheduling frequency range from a base station, wherein the update of the configuration of the uplink scheduling frequency range or the update of the configuration of the downlink scheduling frequency range is not associated with any of the following: a change in a reference location, a change in the duration of a protection period between the transmission of an uplink signal and the reception of a downlink signal, or the introduction of such protection period.

[0147] According to an example embodiment of the tenth aspect, the method includes: receiving an update of the configuration of an uplink scheduling frequency range or an update of the configuration of a downlink scheduling frequency range from a base station, wherein the update of the configuration of the uplink scheduling frequency range or the update of the configuration of the downlink scheduling frequency range is associated with a change of reference location and one of the following: an increase in the duration of a protection period between the transmission of an uplink signal and the reception of a downlink signal or the introduction of the protection period.

[0148] According to an example embodiment of the tenth aspect, the uplink scheduling frequency range or the downlink scheduling frequency range includes a continuous range of physical resource blocks.

[0149] According to an example embodiment of the tenth aspect, the physical resource blocks of the uplink scheduling frequency range are a subset of the physical resource blocks of the channel bandwidth, or the physical resource blocks of the downlink scheduling frequency range are a subset of the physical resource blocks of the channel bandwidth, or the physical resource blocks of the downlink scheduling range are the same as the physical resource blocks of the channel bandwidth, or the physical resource blocks of the uplink scheduling frequency range or the physical resource blocks of the downlink scheduling frequency range are selected from a configuration subset of the physical resource blocks of the channel bandwidth.

[0150] According to an example embodiment of the tenth aspect, the method includes: further determining at least one maximum power reduction requirement based on a reference location or the actual local oscillator location.

[0151] According to an example embodiment of the tenth aspect, at least one maximum power reduction requirement includes a maximum power reduction MPR value or an additional maximum power reduction A-MPR value.

[0152] According to an example embodiment of the tenth aspect, the method includes: sending an indication to a base station of the maximum uplink scheduling frequency range or the maximum downlink scheduling frequency range of a user equipment, wherein the maximum uplink scheduling frequency range or the maximum downlink scheduling frequency range of the user equipment is narrower than the channel bandwidth.

[0153] According to the eleventh aspect, an apparatus is disclosed. The apparatus may include components for performing the method according to the third, fourth, seventh, eighth, or tenth aspect, or any / more example embodiments thereof.

[0154] According to the twelfth aspect, a computer program, a computer program product, or a (non-transitory) computer-readable medium is disclosed. The computer program, computer program product, or (non-transitory) computer-readable medium may include instructions that, when executed by a device (e.g., a user equipment or a base station), cause the device to perform at least the method according to the third, fourth, seventh, eighth, or tenth aspect, or any (or more) example embodiments thereof.

[0155] Therefore, the exemplary embodiments of this disclosure can provide apparatus, methods, computer programs, computer program products, or computer-readable media for improving various aspects of wireless network sharing. Any exemplary embodiment may be combined with one or more other exemplary embodiments. These and other aspects of this disclosure will become apparent from the exemplary embodiments(s) described below. The subject matter of the independent claims is provided according to some aspects. Additional aspects are defined in the dependent claims. Attached Figure Description

[0156] The accompanying drawings are provided to further illustrate the exemplary embodiments and form part of this specification. The drawings depict exemplary embodiments and, together with the specification, help to explain these exemplary embodiments. In the drawings:

[0157] Figure 1 An example of a communication network is illustrated;

[0158] Figure 2 The illustration shows an example of a device configured to practice one or more example embodiments;

[0159] Figure 3 An example of a Physical Resource Block (PRB) is illustrated.

[0160] Figure 4 The illustration shows an example of the maximum power reduction value configured for different types of modulation and resource block allocation;

[0161] Figure 5 This diagram illustrates an example of a conceptual architecture for a transceiver;

[0162] Figure 6 The diagram illustrates an example of signaling and operations used to configure uplink / downlink scheduling frequency ranges;

[0163] Figure 7 The illustration shows an example of the configuration of uplink and downlink scheduling frequency ranges, with the reference position in the middle of the uplink scheduling frequency range;

[0164] Figure 8 The illustration shows an example of configuring uplink and downlink scheduling frequency ranges so that transmissions on the allocated frequency resources do not interfere with the protected frequency band.

[0165] Figure 9 The illustration shows an example of how transmissions on allocated frequency resources can cause interference to the protected frequency range.

[0166] Figure 10 The illustration shows an example of the transition band of a channelization filter;

[0167] Figure 11 The illustration shows an example of a first method for configuring uplink scheduling frequency ranges;

[0168] Figure 12 The illustration shows an example of a second method for configuring uplink scheduling frequency ranges;

[0169] Figure 13 The illustration shows an example of a third method for configuring uplink scheduling frequency ranges;

[0170] Figure 14 The illustration shows an example of a fourth method for configuring uplink scheduling frequency ranges; and

[0171] Figure 15 An example of a method for adapting baseband parameters associated with transmissions in the uplink scheduling frequency range is illustrated.

[0172] In the accompanying drawings, the same reference numerals are used to denote the same parts. Detailed Implementation

[0173] Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. The detailed description provided below, in conjunction with the drawings, is intended as a description of this example and is not intended to represent the only form in which this example can be constructed or used. This description illustrates the function of the example and the sequence of steps for constructing and operating the example. However, the same or equivalent functions and sequences can be implemented through different examples.

[0174] Figure 1 An example of a communication network is illustrated. Communication network 100 may include one or more base stations (BSs) 120, 122, 124. The base stations (multiple) 120, 122, 124 may be portions of a radio access network (RAN) configured to enable devices such as UE 110 to access communication services provided by core network 140. Together with communication network 100, the base stations (multiple) 120, 122, 124 and core network 140 may be collectively referred to as 'network'. UE 110 may also be referred to as user equipment, terminal device, mobile device, etc. UE 110 may be configured to communicate with the base stations (multiple) 120, 122, 124 via a radio interface (also called an air interface). Base stations 120, 122, 124 may also be referred to as access nodes, access points or network devices. Terminal devices may include devices that terminate connections from the communication network.

[0175] The radio interface can be configured, for example, based on the 5G NR (New Radio) standard defined by the 3rd Generation Partnership Project (3GPP) or any future standard or technology (e.g., 6G). Base stations 120, 122, and 124 may include, for example, fifth-generation base stations (gNBs). Transmissions from the base stations to UE 110 can be referred to as downlink (DL) transmissions. Transmissions from UE 110 to the base stations can be referred to as uplink (UL) transmissions. Therefore, UE 110 can be configured as a transmitter for uplink transmissions and a receiver for downlink transmissions. Multiple base stations 120, 122, and 124 can be configured as receivers for uplink transmissions and transmitters for downlink transmissions. A transceiver (e.g., UE 110 or base station 120) may include both transmitters and receivers.

[0176] The communication network 100 may include a wireless communication network or a mobile communication network, such as, for example, a cell communication network. The UE 110 may be configured to communicate with one or more base stations 120, 122, 124 using one or more logical channels and / or physical channels, such as control channels like the Physical Downlink Control Channel (PDCCH) or data channels like the Physical Downlink Shared Channel (PDSCH) or Physical Uplink Shared Channel (PUSCH). Shared data channels (e.g., PDSCH and PUSCH) may be shared by multiple UEs.

[0177] Core network 140 can be implemented using various network functions (NFs), including, for example, one or more user plane functions (UPFs) and one or more access and mobility management functions (AMFs). The UPF can be configured to handle the user data portion of a communication session. Therefore, the UPF can provide an interconnection point between the radio access network and the data network, which is configured to provide application services to UE 110 via core network 140 and the radio access network. For example, the UPF can be configured to handle encapsulation and decapsulation of user plane protocols, such as the GPRS (General Packet Radio Service) Tunneling Protocol (GTP-U) for the user plane. The AMF can be configured to receive connection and session request related data from UE 110 (via a base station). The AMF can be configured to control connection and mobility management in communication network 100.

[0178] Base stations 120, 122, and 124 can be configured to communicate with a UE via one or more cells. For example, base station 120 can be configured to serve one or more UEs in cell 130. Base station 122 can be configured to serve a UE in cell 132. Base station 124 can be configured to serve a UE in cell 134. A cell can be configured to serve UEs in a specific geographic area with a specific radio frequency or a radio frequency range around the cell center frequency.

[0179] The communication network 100 can operate based on a protocol stack comprising multiple protocol layers. The protocol stack can be arranged based on the Open Systems Interconnection (OSI) model or a layer model specific to a particular standard. In one example, the protocol stack may include a Service Data Adaptation Protocol (SDAP) layer, which receives data from the application layer for transmission. The SDAP layer can be configured to exchange data with a Packet Data Convergence (PDCP) layer. The PDCP layer can be responsible for, for example, generating data bursts comprising one or more data packets based on data obtained from the SDAP layer.

[0180] The PDCP layer can provide data to one or more instances of the Radio Link Control (RLC) layer. For example, PDCP data can be transmitted on one or more RLC transport tributaries. Each RLC instance can be associated with a corresponding MAC instance in the MAC layer. The MAC layer can provide mapping between upper-layer logical channels(s) and physical layer transport channels, handling the multiplexing and demultiplexing of MAC Service Data Units (SDUs). Furthermore, the MAC layer can provide error correction based on packet retransmissions, such as according to the Hybrid Automatic Repeat Request (HARQ) procedure. Physically independent transport tributaries can be provided by the Physical (PHY) layer (also known as Layer 1 (L1)). The corresponding protocol stack can be applied to both base stations 120, 122, and 124 and UE 110.

[0181] In a split base station architecture, the protocol layer portion can be implemented at the base station's central unit (CU) (e.g., gNB-CU), which can be configured to handle upper layers of the protocol stack, such as SDAP and PDCP layers. Furthermore, the gNB-CU can be configured to handle Radio Resource Control (RRC) operations. The base station's central unit can be associated with (e.g., configured to control) one or more distributed units (DUs) of the base station, which can be configured to handle lower layers of the protocol stack, such as RLC, MAC, and L1. Multiple radio units of the gNB-DUs can be configured to transmit data to / receive data from multiple UEs via radio interfaces. Error correction coding and / or decoding can be performed at the physical layer, for example by UE 110 or the base station (e.g., its distributed units).

[0182] The communication network 100 may include other network functions, network devices, or protocols, as... Figure 1 The examples shown may be supplementary or alternatives. Network devices can be configured to implement one or more network functions. Although some embodiments are described in the context of 5G, it should be understood that the embodiments of this disclosure are not limited to this example network. Therefore, the example embodiments can be applied to any current or future communication network. Devices such as, for example, UE 110 or base station 120 may include or be configured to implement one or more protocol layers described herein, for example, by means of software. However, it should be noted that the example embodiments can be applied in any context of transmitting or receiving data.

[0183] Different methods can be used to optimize bandwidth usage in radio communications. For example, the spectrum can be divided into bandwidth portions (BWPs). A BWP can include a set of contiguous resource blocks on network carriers using a given digital technology. Resource blocks (RBs) can include physical resource blocks (PRBs) that can be defined at the physical layer. Figure 3Examples of RBs are provided. The maximum BWP size can be configured, for example, 275 RBs. In this case, a single BWP can be processed by a single 4k FFT (Fast Fourier Transform) operation. However, the BWP concept primarily or only covers baseband operation. In this case, the UE's RF (Radio Frequency) configuration can be considered an implementation problem and can be defined based on the UE's RF requirements for relative static channel bandwidth (CBW). BWPs can be used, for example, to support different UE capabilities (e.g., capability-reduced RedCap devices), improve UE power saving, support multiple parallel Radio Resource Control (RRC) configurations (e.g., different digital technologies), etc.

[0184] However, this baseband-centric BWP definition may not be optimal. For example, determining UE110's RF requirements based on the UE's CBW may only offer benefits in terms of energy saving in baseband processing, but not in terms of RF power consumption. BWP configuration can also be very complex due to the many BWP types, BWP handover, BWP fallback, associated UE capabilities, etc. For example, BWP handover can lead to confusion and error situations, potentially causing interoperability issues. Furthermore, the definitions of (multiple) BWPs and CBWs can be confusing. This can make it difficult to define how to handover BWPs, and consequently, can also lead to unnecessary interruptions in user plane (UP) communications.

[0185] The exemplary embodiments of this disclosure provide an improved bandwidth adaptation scheme, for example, for applications in 6G Time Division Duplex (TDD) scenarios. The exemplary embodiments allow for joint consideration of both baseband and RF aspects, providing opportunities to reduce power consumption at the UE. Furthermore, in some exemplary embodiments, downlink and uplink can be considered jointly. Therefore, handover gaps between uplink and downlink transmissions due to possible RF configuration changes can be avoided or shortened. Additionally, the exemplary embodiments allow the available UE transmit power to be unlocked, as it is no longer limited by unnecessarily configured maximum power reduction values.

[0186] Figure 2The illustration shows an example of a device configured to practice one or more exemplary embodiments. Device 200 may be, for example, a UE 110, or base stations 120, 122, 124, or a subset thereof (e.g., a central or distributed unit of a base station), a network device, a terminal device, or generally any device configured to implement the functions described herein. Device 200 may include at least one processor 202. At least one processor 202 may include one or more of a variety of processing devices, such as, for example, a coprocessor, a microprocessor, a controller, a digital signal processor (DSP), a processing circuitry system with or without an accompanying DSP, or various other processing devices including integrated circuits such as, for example, application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), microcontroller units (MCUs), hardware accelerators, dedicated computer chips, etc.

[0187] The device 200 may also include at least one memory 204. Memory 204 may be configured to store, for example, computer program code 206, such as operating system software and application software. Memory 204 may include one or more volatile memory devices, one or more non-volatile memory devices, and / or combinations thereof. For example, the memory may be embodied as a magnetic storage device (such as a hard disk drive, magnetic tape, etc.), an optical-magnetic storage device, or a semiconductor memory (such as a mask ROM, PROM (programmable ROM), EPROM (erasable PROM), flash ROM, RAM (random access memory), etc.). Memory 204 is provided as an example of a (non-transitory) computer-readable medium. The term "non-transitory" as used herein refers to a limitation on the medium itself (i.e., tangible, not tactile), rather than a limitation on the persistence of data storage (e.g., RAM and ROM).

[0188] The device 200 may also include a communication interface 208 configured to enable the device 200 to transmit and / or receive information. The communication interface 208 may include an external communication interface, such as a radio interface between the UE 110 and (multiple) base stations 120, 122, 124, or a communication interface (e.g., F1-U and / or F1-C interfaces) between the central unit of a base station and (multiple) distributed units. The communication interface 208 may include one or more radio transmitters or receivers that can be coupled to one or more antennas or the device 200, or configured to be coupled to one or more antennas external to the device 200. Alternatively or additionally, the communication interface may include an internal communication interface of the device 200 configured, for example, to access at least one memory 204, or an external memory configured to be communicatively or physically coupled to the device 200 for reading or writing codewords.

[0189] The device 200 may also include other components and / or functions, such as a user interface 210, including at least one input device and / or at least one output device. The input device may take various forms, such as a keyboard, a touchscreen, or one or more embedded control buttons. The output device may include, for example, a display, a speaker, etc.

[0190] When device 200 is configured to perform a certain function, one or more components of device 200 (such as, for example, at least one processor 202 and / or at least one memory 204) may be configured to perform that function. Furthermore, when at least one processor 202 is configured to perform a certain function, that function may be implemented using, for example, program code 206 included in at least one memory 204.

[0191] The functions described herein can be performed at least in part by one or more computer program product components, such as software components. According to an example embodiment, device 200 includes a processor or processor circuitry, such as a microcontroller, configured by program code 206 (at execution) to perform embodiments of the operations and functions described herein. Program code 206 is provided as an example of instructions that, when executed by at least one processor 202, result in performance of device 200.

[0192] As an alternative or supplement, the functions described herein may be performed at least in part by one or more hardware logic components. For example, but not limited to, illustrative types of hardware logic components that may be used include field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), system-on-a-chip (SoCs), complex programmable logic devices (CPLDs), graphics processing units (GPUs), and the like.

[0193] Apparatus 200 may be configured to perform or cause the methods(s) described herein to be performed, or may include components for performing the methods(s) described herein. In one example, the components include at least one processor 202 and at least one memory 204 including instructions (e.g., program code 206) configured to cause apparatus 200 to perform the methods(s) when executed by at least one processor 202. Typically, computer program instructions may be executable on components that provide general processing functionality. Such components may be embedded in, for example, a UE (e.g., a personal computer, smartphone, or IoT device), a network device, etc. Thus, the methods(s) may be implemented by a computer, for example based on algorithms(s) executable by general processing functionality, an example of which is at least one processor 202. The components may include transmitting or receiving components that may be coupled to or configured to be coupled to one or more antennas, such as one or more radio transmitters or receivers. Apparatus 200 may include, for example, network devices, such as base stations, access points, base stations, or their central / distributed units. Although apparatus 200 is illustrated as a single device, it should be understood that, where applicable, the functionality of apparatus 200 may be distributed to multiple devices.

[0194] Figure 3 The illustration depicts an example of a physical resource block including resource elements according to an exemplary embodiment. Signals (e.g., uplink or downlink signals) may include multiple orthogonal frequency division multiplexing (OFDM) symbols, such as cyclic prefix OFDM (CP-OFDM) symbols or discrete Fourier transform spread spectrum OFDM (DFT-s-OFDM) symbols. An OFDM symbol may include multiple subcarriers. Each subcarrier may be modulated using a scheme such as quadrature amplitude modulation (QAM) or phase shift keying (PSK). Signals may include multiple resource blocks (RBs) 302, such as PRBs. REs 304 (dashed lines) may include a subcarrier at an OFDM symbol. Therefore, an RE 304 may carry a modulation symbol. RBs 302 may include a set of REs 304 associated with one or more OFDM symbols. Figure 3 In the example, resource block 302 includes twelve subcarriers (REs) in an OFDM symbol. Typically, a resource block may include a set of time-frequency transmission resources configured to carry data via a transmission medium such as, for example, a wireless radio interface.

[0195] Modulation symbols can be selected based on specific modulation symbols that map the binary input string to a constellation (e.g., a QAM or PSK constellation). Typically, a constellation can comprise a set of possible complex-valued modulation symbols. Therefore, a modulation symbol can be represented by two real-valued I and Q components, respectively, corresponding to the real and imaginary parts of the complex-valued modulation symbol. However, in the case of Binary Phase Shift Keying (BPSK), the modulation symbol can be purely real-valued or purely imaginary-valued. In this case, the modulation symbol can be represented by a single real number. In the case of OFDM, the signal can be constructed in the frequency domain by assigning constellation symbols to different RE 304s and transforming the resulting OFDM symbols to the time domain (e.g., via an Inverse Fast Fourier Transform (IFFT) operation). The resulting time-domain signal includes complex-valued samples (which can also be called IQ samples).

[0196] Figure 4 The illustration shows examples of maximum power reduction values ​​configured for different types of modulation and resource block allocation. To facilitate reasonable UE implementation while meeting requirements related to transmitted signal quality (including spurious emission levels), UE 110 can be allowed to reduce its maximum output power, for example, depending on the characteristics of the transmitted waveform (e.g., modulation order) and the UE 110's RB allocation or power class. RB allocation can also be referred to as resource allocation. Modulation order can refer to the number of bits carried by the signal modulation symbols (constellation points). The amount of maximum output power reduction can be defined by a pre-configured (e.g., normalized) maximum power reduction (MPR) value relative to the maximum transmitted power of the power class (e.g., 23 dBm in the case of power class 3) or relative to some other predefined value (e.g., the effect of 23 dBm + a predefined power boost value (dB)). It should be noted that different MPR values ​​can be defined for edge, external, and internal RB allocations on the configured CBW.

[0197] For example, if CBW includes N RB For each resource block, the edge, external, and internal RB allocation can be determined by UE 110 as follows: - N RB This can represent the maximum number of RBs for a given CBW and subcarrier spacing; - Where max() indicates the maximum value of all arguments, floor( x () is less than or equal to x The largest integer, L CRB This is the transmission bandwidth (e.g., the length of a contiguous resource block allocation, expressed in units of resource blocks); and - .

[0198] For example, an RB allocation can be determined as an internal RB allocation if the following conditions are met: and , Among them ceil( x () is greater than or equal to x The smallest integer. Therefore, if the position assigned by RB (e.g., the starting index assigned by RB). (Definition) Located in the middle part of the channel bandwidth (e.g., at the lower limit) and upper limit Between), and the size of the RB allocation is less than or equal to the threshold margin ( L CRB If the RB allocation is not within a predefined margin from the edge of the channel bandwidth, then the RB allocation can be determined as an internal RB allocation. Typically, if the RB allocation is not within a predefined margin from the edge of the channel bandwidth, then the RB allocation can be determined as an internal RB allocation. If the RB is allocated at the lowest or highest edge of the channel, for example, where... L CRB If ≤2 (RB), then the RB allocation can be determined as an edge RB allocation. If the RB is neither an internal RB allocation nor an edge RB allocation, then the RB allocation can be determined as an external RB allocation.

[0199] Additional MPR (A-MPR) requirements can be configured to meet specific additional transmission requirements. A-MPR can be used, for example, to protect other radio systems. These requirements may be related to regulatory requirements. When deriving the A-MPR requirements for UE 110, it can be assumed that the DC location is in the middle of the CBW (network carrier). This may negatively impact uplink coverage. When A-MPR is defined, UE 110 may be allowed to apply the higher of the normal MPR and A-MPR values, for example... .

[0200] Typically, UE 110 can be configured to operate at a specified upper limit. and lower limit The innermost is the service cell in the time slot. c carrier f Set its maximum output power. . The lower limit can be defined as , in It serves the community c The maximum allowed UE output power is signaled by higher layers. It allows for transmission power relaxation at the edge of the operating frequency band. This is the nominal UE power (i.e., no tolerance). It is the adjustment of the maximum output power at a given power level. It's a reduction in maximum power. This is an additional tolerance due to the reduction in maximum power caused by the wider operating bandwidth. It is an additional reduction in maximum power. This is due to support for inter-band CA (carrier aggregation) operation, inter-band NR-DC (NR dual connectivity) operation, and the maximum configured output power relaxation allowed due to support for SUL (supplementary uplink) operation, for the serving cell. c , This is the highest configuration output power relaxation allowed due to support for Sound Reference Signal (SRS) antenna port switching. It serves the community c Power management reduces maximum power.

[0201] The lower limit can be influenced by the MPR or A-MPR value to allow the UE 110 to reduce its maximum output power to meet other RF transmission requirements (e.g., in-band transmit (IBE) or out-of-band transmit (OOBE) requirements). As mentioned above, the MPR value can depend on the waveform, modulation, and the type of RB allocation within the CBW (edge, internal, external). Typically, internal RB allocation allows for a smaller MPR.

[0202] Figure 4 The table provides examples of MPR values ​​for different modulation and RB allocation types. For example, if the RB allocation is an internal RB allocation and the modulation scheme is DFT-s-OFDM with 16-QAM, the maximum power reduction value is “≤1”, meaning that UE 110 is allowed to reduce its maximum output power by 1 dB. As another example, if the modulation scheme is CP-OFDM with 64-QAM, the maximum power reduction value is “≤3.5” (regardless of the RB allocation type), meaning that UE 110 is allowed to reduce its maximum output power by 3.5 dB. Values ​​with subscripts 1 and 2 may be applied depending on, for example, the operating band or capabilities of UE 110 (e.g., power boost configuration). The example embodiments of this disclosure enable the available UE transmit power to be unlocked (e.g., taking into account the bandwidth used by both MPR and A-MPR).

[0203] Figure 5An example of the conceptual architecture of a transceiver (UE 110 in this example) is illustrated. Time-domain IQ samples obtained by applying a modulation scheme (such as CP-OFDM or DFT-S-OFDM with a specific constellation) to binary input data can be fed to a channelization filter 502 of UE 110. The channelization filter 502 may include digital filters, such as, for example, finite impulse response (FIR) filters or infinite impulse response (IIR) filters. The channelization filter 502 can be configured to filter the IQ samples at the baseband, for example, to reduce the power of signals outside the allocated transmission bandwidth, for example, to obtain a steeper slope at signal edges in the frequency domain compared to what is provided by the IFFT modulation scheme (e.g., OFDM) and / or other filters used.

[0204] UE 110 may include a digital-to-analog converter (DAC) 504, which may be implemented as a single component with an analog-to-digital converter (ADC) 514, or as a separate component. DAC 504 may be configured for uplink signal transmission, for example, to convert digital IQ samples, optionally filtered by channelization filter 502, into analog baseband signals. Channelization filter 502, DAC 504, and ADC 514 may be configured for baseband processing of uplink / downlink signals.

[0205] UE 110 may include a mixer 506 that can be configured to up-convert an analog baseband signal to radio frequency. As shown in the signal chain above, the baseband signal can be centered at zero frequency, with the DC component of the baseband signal corresponding to zero frequency. The mixer 506 utilizes the local oscillator (LO) frequency... f LO The RF up-conversion process converts the DC component to the LO frequency. Therefore, in an RF signal, the DC component of the baseband signal can be located at the LO frequency. The LO frequency (also known as the LO position (in the frequency domain)) can thus be the position of the DC component in the RF signal.

[0206] The power amplifier (PA) 508 can be configured to amplify the transmitted signal before feeding it to the antenna 510. Due to the non-ideal nature of PA 508, UE 110 can be allowed to reduce its maximum output power to avoid in-band or out-of-band interference, for example, by means of the configuration of the MPR value.

[0207] After the RF signal is received, a low-noise amplifier (LNA) 512 can be configured to amplify the received RF signal. The RF signal can be down-converted by mixer 506 to obtain an analog baseband signal. ADC 514 can sample the analog baseband signal to obtain digital IQ samples, which can optionally be filtered by channelization filter 502. Therefore, ADC 514 can be configured for receiving downlink signals, for example, to convert the analog baseband signal from mixer 506 into a digital baseband signal (IQ sample).

[0208] Notice, Figure 5 The diagram illustrates a conceptual architecture of a transceiver, serving as an example of the relative positions of various components. It should be understood that different variations of this signal processing chain can be implemented. For example, the signal processing chain may include separate transmit (TX) and receive (RX) branches, which can be configured to operate based on the same LO frequency. Furthermore, the channelization filter 502 can be embodied as separate instances for the transmission and reception of uplink and downlink signals, respectively. For example, the channelization filter or different instances thereof can be configured with different filter coefficient values ​​and / or different numbers of filter coefficients, as will be discussed in reference to... Figure 10 Further description.

[0209] Figure 6 The diagram illustrates examples of signaling and operations used to configure uplink / downlink scheduling frequency ranges. For instance, in the case of TDD operation, Figure 6 The operation can be used, for example, to configure (multiple) BWP-like scheduling frequency ranges for UE 110 and add RF or Radio Resource Management (RRM) functions. Figure 6 The example implementation enables the definition of a reference location or reference range for the UE bandwidth. Bandwidth expansion or contraction operations can be defined relative to the reference location / range, causing the UE bandwidth to expand or contract around the reference location / range. This provides the benefit of being able to define RF requirements relative to a reference location / range.

[0210] At operation 601, UE 110 can be configured to receive an indication of its channel bandwidth (CBW). The CBW indication may include an indication of uplink CBW, downlink CBW, or both. The uplink CBW may be equal to or not equal to the downlink CBW. For example, the uplink CBW may be limited to the downlink CBW, or, for example, may be a subset of the uplink CBW. UE 110 can be configured to determine (multiple) IBE and / or OOBE requirements based on UE 110's (uplink) channel bandwidth.

[0211] Base station 120 can be configured to send an indication of CBW to UE 110, for example, via broadcast signaling (such as Master Information Block (MIB) or System Information Block (SIB)) or via dedicated signaling for UE 110. The broadcast signaling can be sent on a control channel (such as, for example, the Physical Broadcast Channel (PBCH)). UE 110 can receive the indication of CBW via the appropriate channel / signaling.

[0212] At operation 602, UE 110 may send an indication of one or more maximum scheduled frequency ranges (SFRs) of UE 110 to base station 120. The scheduled frequency range (SFR) may include the frequency ranges configured for scheduling data transmission for the UE. The maximum SFR may indicate the maximum frequency range on which UE 110 can transmit uplink signals or receive downlink signals without retuning its RF circuitry. UE 110's maximum uplink (UL) SFR may be narrower than its (UL) CBW. UE 110's maximum downlink (DL) SFR may be narrower than its (DL) CBW.

[0213] A UL SFR can be a frequency range configured to schedule uplink signal transmissions. For example, base station 120 can be configured to schedule uplink transmissions for UE 110 within a UL SFR, but not outside a UL SFR (i.e., on a frequency of a PRS that is not part of a UL SFR). A UL SFR can define possible locations for uplink resource allocation for UE 110 based on frequency, such as for UE 110's transmission on a PUSCH channel. A UL SFR can be confined within a (UL)CBW, for example, it can be a subset of a (UL)CBAW. For example, a PRB of a UL SFR can be a subset of a PRB of a (UL)CBW. A ULSFR can include a set of consecutive PRBs.

[0214] A downlink SFR can be a frequency range used to schedule downlink signal transmissions to the UE. For example, base station 120 can be configured to schedule downlink transmissions to UE 110 within a DL SFR, but not outside of a DL SFR. A DL SFR can define possible locations for downlink resource allocation to UE 110 based on frequency, for example, for transmissions by base station 120 on the PDSCH channel. A DF SFR can be limited to a CBW, for example, it can be a subset of the (DL)CBW. For example, the PRBs of a DL SFR can be a subset of the PRBs of the (DL)CBW. Alternatively, the number of PRBs in a DL SFR can be the same as the number of PRBs in a CBW. For example, a DL SFR can include the same PRBs as the (DL)CBW (e.g., the DL SFR and the (DL)CBW have the same PRBs). Typically, base station 120 can be configured to allocate time-frequency transmission resources, such as PRBs, within the uplink and / or downlink SFRs of UE 110. A DL SFR can include a contiguous set of PRBs.

[0215] At operation 603, base station 120 can determine the UL SFR and / or downlink SFR of UE 110, for example, such that the ULSFR is within the maximum UL SFR of UE 110, and / or such that the DL SFR is within the maximum DL SFR of UE 110.

[0216] UL and / or DL ​​SFRs can be configured with specific options according to predefined granularity (e.g., 5MHz, 10MHz, 20MHz, etc.). For example, for a given subcarrier spacing, a certain number of PRBs can be configured (e.g., 25 PRBs can be configured for a subcarrier spacing of 5MHz and 15kHz). Alternatively or supplementarily, (multiple) UL and / or DL ​​SFRs can be configured with specific location options within the CBW. For example, the starting PRBs for the UL / DL SFRs can be selected from predefined values. These values ​​(e.g., allowed sizes and / or locations) can be pre-configured at UE 110 and / or base station 120, for example, based on normalized values. Therefore, UL SFRs and / or DL ​​SFRs can be configured based on the number of SFR sizes and locations within the CBW (e.g., in terms of PRBs), where the size / location is a subset of all possible sizes and locations within the CBW. Base station 120 can, for example, be configured to select PRBs for UL SFRs and / or DL ​​SFRs from a configured subset of PRBs within the CBW. Configuring such restrictions can provide the benefit of reducing test complexity.

[0217] At operation 604, base station 120 may send the configuration of the UL SFR to UE 110. UE 110 may receive the UL SFR configuration from base station 120. The UL SFR may be associated with a reference location or reference range in the frequency domain. For example, the UL SFR may be defined relative to a reference location. The reference location may be within the UL SFR. The reference location may include at least one of the following: the reference location of the DC component in the frequency domain (see...). Figure 5 The reference range can be the "DC position at RF", the reference position of the DC subcarrier in the frequency domain, the center frequency of the UL SFR, the reference LO frequency, or the reference center frequency for UE 110 uplink and / or downlink communication. The reference range can include a range of values ​​for any type of reference position, such as those mentioned above. A reference position can include a reference frequency. A reference range can include a range of reference frequencies.

[0218] In other words, UE 110 can be configured with a predefined UL SFR, which defines the DC location (e.g., center frequency or other reference location) for UL and / or DL ​​operation. The UL SFR can be located within the UL and / or DL ​​CBW. The configuration of the UL SFR can include an indication of the reference location / range. Therefore, UE 110 can receive the indication of the reference location / range within the configuration of the UL SFR. Alternatively, this indication can be transmitted / received separately from the configuration of the UL SFR.

[0219] The reference location or reference range can be substantially in the middle of the uplink scheduling frequency range, such as including the center frequency of the ULSFR. This provides the benefit of minimizing MPR or A-MPR requirements, because unwanted emissions caused by modulator non-ideals in the power amplifier will not reach too far, or not at all, in the out-of-band region. However, the UE 110 can be allowed a certain degree of implementation flexibility to select the practical location, such as within a predefined margin, e.g., ± N The margin of each PRB, of which N It is a positive integer (for example, N =1). This margin can be determined by base station 120 and signaled to UE 110. Alternatively, the specification allows this operation to be performed without additional signaling. UE 110 can be configured to receive a margin indication from the base station.

[0220] At operation 605, base station 120 may send the configuration of the DL SFR to UE 110. UE 110 may receive the DL SFR configuration from base station 120. However, it should be noted that base station 120 may be configured to send the configuration of the UL SFR to UE 110 (see operation 604), but does not need to determine (see operation 603) or send (see operation 605) the configuration of the DL SFR. In this case, UE 110 may consider the (DL)CBW as the range within which base station 120 can schedule downlink transmissions. The DL SFR may be limited to the UL SFR, for example, it may be a subset of the UL SFR. For example, the PRB in the UL SFR may be a subset of the PRB in the DL SFR. Therefore, UE 110 may also be configured as a DL SFR that defines possible locations for sending downlink signals to UE 110 based on the frequency, for example, possible locations in the frequency for PDSCH resource allocation.

[0221] At operation 606, UE 110 can select a reference location or an actual LO location. UE 110 can be configured to select the reference location as the location of the DC component in the frequency domain, the location of the DC subcarrier in the frequency domain, the center frequency of the UL SFR, the reference LO frequency, or the center frequency of UE 110's uplink and / or downlink communication. At operation 609, UE 110 can use the reference location to determine MPR requirements. Therefore, the reference location can include a reference location (e.g., the LO location) configured for UE 110 to determine MPR requirements. UE 110 can be configured to select the reference location from a predefined frequency range (e.g., a reference range or the UL SFR).

[0222] Typically, UE 110 can be configured to determine the reference location based on the UL SFR range. As mentioned above, the reference location can be defined relative to the UL SFR (e.g., based on a standard), for example, defined as being in the middle of the UL SFR. Therefore, UE 110 can determine the reference location based on the UL SFR, for example, by setting the reference location in the middle of the UL SFR (e.g., at the center subcarrier or PRB of the UL SFR).

[0223] Alternatively or additionally, UE 110 may be configured to select an actual LO location (e.g., an actual DC location) for performing upconversion and / or downconversion. UE 110 may be configured to use the actual LO location to determine MPR requirements. The actual LO location may include the actual LO frequency configured at UE 110. The actual LO location may be or correspond to a reference location. Alternatively, UE 110 may be configured to select an actual LO location from a predefined frequency range (e.g., a margin of one or more PRBs) around the reference location. For example, if the reference location (e.g., a DC location) is located in the middle of the UL SFR, UE 110 may be configured to select an actual location within a predefined frequency range corresponding to an allowable margin (e.g., ±1 PRB), thereby allowing some implementation flexibility.

[0224] At operation 607, UE 110 can send an indication of the actual LO location to base station 120, for example, via higher-layer signaling such as MAC control element (CE) or RRC message.

[0225] At operation 608, base station 120 may send resource allocations (e.g., uplink grants) to UE 110. Resource allocations can be configured for UE 110 to send uplink signals (multiple) on UL SFRs (e.g., on PUSCH). Resource allocations can be restricted to within UL SFRs, for example, including a subset of the PRBs of the UL SFR. UE 110 may receive resource allocations from base station 120. As mentioned above, resource allocations can be of a specific type, such as edge, internal, or external RB allocations, which may affect the determination of the MPR value at UE 110. UL grants addressing resources outside of UL SFRs can be considered invalid resource allocations. The same applies to DL grants addressing resources outside of DLSFRs. UE 110 can be configured to ignore such UL / DL grants. For example, UE 110 can be configured to avoid sending uplink signals (multiple) on resources allocated outside of UL SFRs.

[0226] exist Figure 7 The diagram illustrates an example configuration of a UL / DL SFR, where the reference position (e.g., the LO position) is in the middle of the UL SFR. The channel bandwidth (CBW) determines the boundary frequencies required for OOBE and IBE. F OOBAs mentioned above, the CBW can be either a ULCBW (UE CBW) or a DL CBW (BS CBW). In this example, the UL CBW is equal to the DL CBW, and therefore the generic label 'CBW' is used. Uplink resource allocation (“allocation”) can be within the UL SFR. IBE requirements can be defined for frequencies that belong to the CBW but are not within the resource allocation range (such as PRBs). If the DL SFR is configured, the UE 110 can use the same (actual) LO location for the transmission of uplink signals within the UL SFR and the reception of downlink signals within the DL SFR, as further described with reference to operations 610 to 612.

[0227] Refer again Figure 6 At operation 609, UE 110 can determine (multiple) MPR requirements. UE 110 can be configured to determine (multiple) MPR requirements based on the UL SFR. For example, if the UL SFR does not include a PRB corresponding to an external or edge RB allocation, UE 110 can determine the MPR value based on waveform or modulation type and / or order, while treating any allocation within the UL SFR as an internal RB allocation (see [link to relevant documentation]). Figure 4 (The rightmost column). If the UL SFR includes different types of RB allocations (e.g., internal and external RB allocations), the UE 110 can determine the MPR value based on the modulation type and order, while taking into account the location of the resource allocation within the UL SFR. Therefore, the determination of (multiple) MPR requirements can also be based on resource allocations, such as the location of the resource allocation within the UL SFR, for example, relative to the CBW. The location of the resource allocation can include the location of the PRB of the resource allocation (e.g., index).

[0228] Note that MPR requirements can include (normal) MPR values, A-MPR values, or both. Figure 8 The illustration shows an example of a UL SFR configuration that ensures transmissions in resource allocation do not interfere with the protected frequency band. With proper configuration of the UL SFR, the need for an A-MPR to protect the protected frequency range can be avoided. This can be achieved, for example, if the UL SFR is narrower than the CBW (Current Broadband Width). Figure 8 In the example, the resource allocation is located at the lower end of the UL SFR. Due to mixing in power amplifier 508, the image of the uplink signal transmitted by UE 110 at the resource allocation appears at the upper end of the UL SFR. Furthermore, below the protected frequency range, third-order intermodulation distortion (IMD3) manifests as OOBE.

[0229] UE 110 can be configured to further determine multiple MPR requirements based on the reference location or the actual LO location. This allows UE 110 to determine whether A-MPR should be configured to protect a specific OOB frequency. Figure 8 In the example, UE 110 can determine that A-MPR is not required (see, A-MPR value equals 0dB) because the UL SFR and LO location prevent IMD3 from falling within the protected frequency range. UE 110 can be pre-configured with one or more protected frequency ranges. If UE 110 determines that IMD3 or any other OOBE component falls within a protected frequency range, UE 110 can determine a non-zero A-MPR value. Configuring the UL SFR to have a narrower frequency range (span) than the CBW minimizes the MPR requirement because UE 110 does not need to prepare for transmitting uplink signals outside the UL SFR.

[0230] Figure 9 The example shown is one where transmissions on allocated frequency resources interfere with the protected frequency range. In this case, no UL SFR is configured, and therefore UE 110 needs to prepare for uplink transmissions at any location on the UL CBW, where the LO location is in the middle of the UL CBW, and in this example, also in the middle of the DL CBW. Therefore, resource allocation at the lower end of the UL CBW causes the image and IMD3 at the upper end of the UL CBW to fall within the protected frequency range, requiring UE 110 to determine a non-zero A-MPR value.

[0231] At operation 610, UE 110 may, for example, transmit an uplink signal to base station 120 on the PUSCH. UE 110 may be configured to transmit the uplink signal at the UL SFR, for example, based on the resource allocation received at operation 608. The bandwidth of the uplink signal may be equal to the maximum bandwidth of the uplink signal. UE 110 may be configured to transmit the uplink signal according to multiple MPR requirements determined at operation 609. For example, UE 110 may be configured to reduce its maximum output power based on the determined MPR or A-MPR value. The uplink signal may have a specific bandwidth corresponding to the frequency range of the resource allocation. Before transmission, UE 110 may be configured to process the uplink signal in baseband via DAC 504 and optionally using channelization filter 502.

[0232] At operation 611, UE 110 can be configured to adapt to (multiple) baseband processing parameters. UE 110 can be configured to determine (multiple) parameters of channelization filter 502 and / or DAC 504 based on the UL / DL SFR (e.g., the bandwidth of the UL / DL SFR), for example, to prepare for downlink signal reception after UE 110 transmits uplink signals, and vice versa. The complexity and power consumption of baseband processing can depend on the number of antenna ports, for example, the number of individual digital streams of IQ samples to be processed. For example, at frequencies of 6-15 GHz, the number of RX antenna ports can be up to eight, and the number of TX antenna ports can be up to four. Excluding power amplifier 508, the power consumption of the UE 110's transmission circuitry can be primarily caused by DAC 504. The power consumption of DAC 504 can be linearly proportional to the bandwidth and exponentially proportional to the number of DAC bits, for example... ,in B It's bandwidth. R This refers to the number of bits per sample. To optimize power consumption, B It can be adapted according to the UL SFR configuration.

[0233] In the receiver chain, the ADC 514 may result in high power consumption, and this power consumption may increase with higher sampling rates (wider bandwidth) and higher precision (bits per sample). UE 110 can be configured to take advantage of power-saving opportunities provided by downlink / uplink scheduling rate adaptation. UE 110 can, for example, be configured to switch between uplink signal transmission (e.g., operation 610) and downlink signal reception (e.g., operation 612), and adapt baseband processing parameters between the two. As described above, uplink transmission can be within the UL SFR, and downlink reception can be from the DLSFR or CBW. The bandwidth of the uplink signal can be narrower than the bandwidth of the downlink signal.

[0234] Switching between uplink signal transmission and downlink signal reception may involve adapting (multiple) parameters of the baseband processing for either the uplink or downlink signal. This adaptation may be based on the bandwidth of the uplink signal and / or the bandwidth of the downlink signal. This provides the benefit of optimizing baseband processing for the relevant bandwidth.

[0235] For example, UE 110 can be configured to adapt to a digital-to-analog or analog-to-digital conversion sampling rate. Adaptation can be performed during a guard period, which may correspond to the gap between transmission and reception when the scheduling range changes (e.g., between UL SFR and DL SFR or between UL SFR and CBW). The sampling rate can indicate the rate at which DAC 504 is configured to acquire baseband IQ samples, or the rate at which the ADC is configured to sample analog baseband signals.

[0236] For example, UE 110 can be configured to reduce the sampling rate when switching from receiving downlink signals to transmitting uplink signals. Conversely, UE 110 can be configured to increase the sampling rate when switching from transmitting uplink signals to receiving downlink signals (see Virtual Routing from Operation 612 back to Operation 610). Therefore, the sampling rate of DAC 504 can be lower than that of ADC 514. This provides the benefit of reduced power consumption, as a narrower UL SFR can be processed with a lower sampling rate.

[0237] Switching between uplink signal transmission and downlink signal reception can be performed without changing the (actual) LO position (e.g., LO frequency) of UE 110, which can be configured for RF upconversion or downconversion (e.g., via mixer 506). Therefore, UE 110 can be configured to transmit uplink signals within the UL SFR at the same local oscillator frequency and receive downlink signals within the CBW or DL ​​SFR. This provides the benefit of enabling switching without extending the guard period. In other words, adaptation can be performed between ULSFRs and DL SFRs with different configurations during the existing gap reserved for link direction switching.

[0238] As another example of adapting to multiple baseband processing parameters, UE 110 can be configured to adapt to multiple parameters of channelization filter 502. As mentioned above, a channelization filter can define the properties of the transmitted or received signal. An ideal channelization filter can be sized based on the UE 110's CBW, for example, having a flat frequency response in the passband (UE CBW) while being configured to completely remove frequencies outside the passband. However, such an ideal filter is not feasible in practice because it requires an infinite filter length, i.e., an infinite number of filter coefficients. Furthermore, the more ideal the filter, the higher the complexity. A non-flat frequency response in the passband can degrade the quality of the transmitted or received signal (e.g., the magnitude of the error vector). In addition, non-ideal attenuation outside the passband increases the level of out-of-band transmission.

[0239] The channelization filter 502 can be implemented using any suitable filtering technique, for example, as a time-domain implementation with a Weighted Overlap and Addition (WOLA) method. Regardless of the filter implementation, parameter selection can be used to balance complexity and power consumption with performance. For example, the number of taps (filter coefficients) in the time-domain implementation can affect both complexity and performance. For example, increasing the filter length (i.e., more taps) can improve performance, but at the cost of increased complexity and power consumption. Therefore, UE 110 can be configured to take advantage of the filter adaptation opportunities provided by downlink / uplink scheduling range adaptation. For example, when the scheduled frequency range is narrow and / or in the middle of the CBW, UE 110 can be configured to use a less aggressive filter with low complexity (e.g., a less flat filter at the edge of the CBW). When the scheduled frequency range is wider and / or closer to the edge of the CBW, UE 110 can be configured to apply a filter with a flatter frequency response but higher complexity.

[0240] Therefore, as an alternative to or supplement to sampling rate adaptation, UE 110 can be configured to adapt to (multiple) parameters of channelization filter 502, for example, to configure the adaptation to change the width of the transition band of channelization filter 502. Adaptation can be performed again during the guard period.

[0241] Figure 10 The diagram illustrates two example filter configurations. In this example, filter (a) has a narrower transition bandwidth than filter (b). Furthermore, as... Figure 10 As shown, filter (a) can have a wider bandwidth than filter (b). Implementing filter (a) may require more filter coefficients to achieve a narrower transition band. Filter (a) can be configured for receiving downlink signals(s), for example, for filtering digital baseband signals from ADC 514. Filter (b) can be configured for transmitting uplink and downlink signals(s), for example, for filtering time-domain IQ samples from the modulator of UE 110. Therefore, the transition band for processing uplink signals(s) can be wider than that for processing downlink signals(s). This provides the benefit of reduced computational complexity and thus reduced power consumption during transmission at a narrower UL SFR. By using different instances of channelized filter 502 to process uplink and downlink signals, adaptation of (multiple) parameters, such as the number and / or values ​​of filter coefficients, can be achieved in practice.

[0242] At operation 612, UE 110 can receive downlink signals. UE 110 can be configured to iterate through operations 610 to 612 such that (multiple) baseband processing parameters are adapted between the transmission of uplink signals and the reception of downlink signals. For example, the bandwidths of the uplink and downlink signals may differ after the transmission of an uplink signal and before the reception of the next downlink signal, or after the reception of a downlink signal and before the transmission of the next uplink signal. Therefore, the transmission bandwidth of UE 110 may differ from the reception bandwidth of UE 110. The transmission and reception bandwidths may be defined, for example, by the corresponding bandpass filters of UE 110. Optionally, when iterating the transmission and reception of uplink / downlink signals, UE 110 may receive another uplink resource allocation (see operation 608) and update (multiple) MPR requirements based on the updated resource allocation (see operation 609). After the reception of downlink signals, UE 110 may move to operations 608, 609, or 611.

[0243] At operation 613, base station 612 may send an update to the configuration of the UL SFR. UE 110 may be configured to receive the updated configuration of the UL SFR. The update of the UL SFR may be associated with a change in the reference location and / or the actual LO location. For example, UE 110 may be configured to update the reference location or actual LO location based on the updated UL SFR, such as based on the frequency range of the updated UL SFR, as described with reference to operation 606. The update of the UL SFR may also be associated with a change in the guard period, or, if the guard period has not yet been configured, with the introduction of a guard period. For example, base station 120 may be configured to schedule uplink transmissions of UE 110 within the updated UL SFR to provide a gap or dedicated (e.g., extended) gap for adapting baseband parameters between uplink transmissions on the updated UL SFR and downlink transmissions on the DL SFR or (DL)CWB.

[0244] At operation 614, base station 612 can send an update to the DL SFR configuration. If the DL SFR has been previously configured, an update to the DL SFR can be sent.

[0245] After receiving updates to the UL SFR and / or DL ​​SFR at operations 613 and 614, UE 110 may return to operation 609 to determine the updated MPR requirements based on the latest configuration of the UL SFR. Alternatively, UE 110 may receive an update to the resource allocation at operation 608 and consider that update when determining the updated MPR requirements at operation 609.

[0246] Applicable Figure 6 Various modifications to the process are possible. For example, UE 110 can be configured to receive one or more of the signals / messages of operations 601, 604, 608, 612, 613, or 614 directly or via another device (such as via sidechain communication for another UE) from base station 120. Furthermore, signaling between UE 110 and the network (see operations 601, 602, 604, 605, 607, 608, 610, 612, 613, 614) may not occur between UE 110 and a single base station, but rather between a group of base stations configured to cooperate in serving UE 110. Therefore, base station 120 may include a group of base stations. Whenever base station 120 is configured to transmit a signal / message, UE 110 can be configured to receive a signal / message, and vice versa.

[0247] Some operations may be optional, and the order in which they are performed may be changed where appropriate. For example, the order of operations 601 and 602 may be switched, or these operations may be omitted. The order of operations 604 and 605 may be switched, or operation 605 may be omitted. One or more of operations 607, 611, 612, 613, and 614 may also be omitted.

[0248] The exemplary embodiments of this disclosure can optimize UE operation in the presence of limitations on maximum output power and relaxations of such limitations, for example, by means of MPR or A-MPR values. One or more of the following functions can be provided:

[0249] UE 110 can be configured to receive from base station 120 a configuration including the ULSFR relative to a reference location / range in the frequency domain. The reference location / range can be within the UL SFR. The UL SFR can be within at least one of the following: uplink channel bandwidth (UL CBW) or CBW. Maximum power reduction (or MPR requirement) and additional maximum power reduction (or A-MPR requirement) can be determined based on the UL SFR.

[0250] In-band and out-of-band transmission requirements can be based on the UL CBW or CBW. The reference location can be at least one of the following: a DC location or a DC subcarrier or the center frequency for both uplink and downlink operation, or the middle of the ULSFR or substantially the middle of the UL SFR, and the UE 110 selects the reference location from a predefined frequency range, or the reference location is signaled by the UE 110 in response to the reception of a configuration or local oscillator frequency (e.g., in the middle of the UL SFR), or located within the UL SFR, or selected by the base station 120 from a predefined frequency range and signaled by the base station 12 in a configuration, or determined based on the UL SFR. The UL SFR may include a number of contiguous resource blocks. This number of contiguous resource blocks may be a subset of the resource blocks included in the UL CBW.

[0251] This configuration may also include a DL SFR. A DL SFR may include a number of contiguous resource blocks. The number of resource blocks may be the same as the number of resource blocks included in the CBW or DL ​​CBW, or the number of resource blocks may be a subset of the number of resource blocks included in the CBW or DL ​​CBW.

[0252] UL SFRs and DL SFRs can have a certain number of sizes and a certain number of locations within the CBW, which are subsets of a certain number of theoretically possible sizes and a certain number of all theoretically possible locations within the CBW. If the size / location of the UL / DL schedule changes and the reference location remains unchanged, the protection period between DL reception and UL transmission at UE 110 may remain unchanged. If the size / location of the UL schedule changes and the reference location changes, the protection period between DL reception and UL transmission at UE 110 may be increased during the change period (e.g., during the transient period of the reconfiguration).

[0253] UL-to-DL and DL-to-UL handovers can be configured to trigger a change in RF bandwidth at UE 110 (e.g., the UL SFR is narrower than the DL SFR). Possible frequency domain locations for PUSCH allocation can be within the UL SFR. If the UL SFR is defined, then (multiple) UL transmissions can be located within the UL SFR. Otherwise, (multiple) UL transmissions can be located within the UL CBW. Possible frequency domain locations for PDSCH allocation can be within the DL SFR. If the DL SFR is defined, then DL reception can be located within the DL SFR. Otherwise, DL reception can be located within the DL CBW. UE 110 can indicate the maximum scheduling range to base station 120. Base station 120 can indicate the UL CBW to UE 110, or the UL CBW can be derived by UE 110. UE 110 can determine that the DL CBW is the same as the UL CBW.

[0254] Figure 11 The illustration shows an example of a method for configuring uplink scheduling frequency ranges. This method can be performed by the UE110, or typically by a transmitter or transceiver, or by a control device configured to control its function when installed therein.

[0255] At operation 1101, the method may include receiving a configuration of an uplink scheduling frequency range from a base station, wherein the uplink scheduling frequency range is associated with a reference position or reference range in the frequency domain, and wherein the uplink scheduling frequency range is limited within the channel bandwidth.

[0256] At operation 1102, the method may include performing at least one of the following: determining at least one maximum power reduction requirement based on the configuration of the uplink scheduling frequency range, or receiving a resource allocation for transmitting uplink signals in the uplink scheduling frequency range.

[0257] At operation 1103, the method may include sending an uplink signal to the base station within the uplink scheduling frequency range according to at least one of the following: at least one maximum power reduction requirement, or resource allocation within the uplink scheduling frequency range.

[0258] Figure 12 The illustration shows an example of a method for configuring an uplink scheduling frequency range. This method can be performed by a base station 120, or typically by a receiver or transceiver, or by a control device configured to control its function when installed therein.

[0259] At operation 1201, the method may include sending to the user equipment at least one of the following: configuration of an uplink scheduling frequency range for the user equipment, wherein the uplink scheduling frequency range is associated with a reference position or reference range in the frequency domain and wherein the uplink scheduling frequency range is limited within the channel bandwidth, or resource allocation for transmitting uplink signals on the uplink scheduling frequency range.

[0260] At operation 1202, the method may include receiving an uplink signal transmitted within the uplink scheduling frequency range from the user equipment according to at least one of the following: at least one maximum power reduction requirement, or resource allocation within the uplink scheduling frequency range.

[0261] Figure 13 The illustration shows an example of a method for configuring uplink scheduling frequency ranges. This method can be performed by the UE110, or typically by a transmitter or transceiver, or by a control device configured to control its function when installed therein.

[0262] At operation 1301, the method may include receiving a configuration of an uplink scheduling frequency range from a base station, wherein the uplink scheduling frequency range is associated with a reference position or reference range in the frequency domain, and wherein the uplink scheduling frequency range is limited within the channel bandwidth.

[0263] At operation 1302, the method may include determining at least one maximum power reduction requirement based on the configuration of the uplink scheduling frequency range.

[0264] At operation 1303, the method may include sending an uplink signal to the base station within an uplink scheduling frequency range based on at least one maximum power reduction requirement.

[0265] Figure 14 The illustration shows an example of a method for configuring an uplink scheduling frequency range. This method can be performed by a base station 120, or typically by a receiver or transceiver, or by a control device configured to control its function when installed therein.

[0266] At operation 1401, the method may include sending a configuration to the user equipment for an uplink scheduling frequency range for the user equipment, wherein the uplink scheduling frequency range is associated with a reference position or reference range in the frequency domain, and wherein the uplink scheduling frequency range is limited within the channel bandwidth.

[0267] At operation 1402, the method may include receiving signals transmitted within the uplink scheduling frequency range from the user equipment in accordance with at least one maximum power reduction requirement.

[0268] Figure 15 An example of a method for adapting baseband parameters associated with transmissions over an uplink scheduled frequency range is illustrated. This method can be performed by the UE 110, or typically by a transmitter or transceiver, or by a control device configured to control its function when installed therein.

[0269] At operation 1501, the method may include receiving a configuration of an uplink scheduling frequency range from a base station, wherein the uplink scheduling frequency range is associated with a reference location or reference range in the frequency domain, and wherein the uplink scheduling frequency range is limited within the channel bandwidth.

[0270] At operation 1502, the method may include: determining at least one maximum power reduction requirement based on the configuration of the uplink scheduling frequency range.

[0271] At operation 1503, the method may include sending an uplink signal to the base station within the uplink scheduling frequency range according to at least one maximum power reduction requirement.

[0272] At operation 1504, the method may include switching between transmission of uplink signals within the uplink scheduling frequency range and reception of downlink signals within the channel bandwidth, wherein the switching includes adaptation of at least one parameter of baseband processing of the uplink signal or the downlink signal, and wherein the adaptation of at least one parameter is based on the bandwidth of the uplink signal and / or the bandwidth of the downlink signal.

[0273] Other features of these methods are directly derived from the functionality of UE 110 or base station 120, as described throughout the specification, claims, and drawings, and therefore will not be repeated here. An apparatus (e.g., UE 110 or base station 120) may be configured to perform or cause the execution of any aspect of the methods(s) described herein. Furthermore, a computer program or computer program product may include instructions for causing the apparatus to perform any aspect of the methods(s) described herein when executed by the apparatus. Additionally, an apparatus may include components for performing any aspect of the methods(s) described herein. According to an example embodiment, the components include at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus to perform at least any aspect of the methods(s) described herein.

[0274] Any ranges or device values ​​given herein may be extended or modified without losing the desired effect. Furthermore, unless expressly prohibited, any embodiment may be combined with another embodiment.

[0275] Although the subject matter has been described in language specific to structural features and / or actions, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. Rather, the specific features and actions described above are disclosed as examples of implementing the claims, and other equivalent features and actions are intended to be within the scope of the claims.

[0276] It should be understood that the above benefits and advantages may relate to one embodiment or several embodiments. The embodiments are not limited to embodiments that solve any or all of the described problems, nor are they limited to embodiments that have any or all of the described benefits and advantages. It should also be understood that reference to 'an' can mean one or more of these items.

[0277] The steps or operations of the methods described herein may be performed in any suitable order, or simultaneously where appropriate.

[0278] Furthermore, individual blocks can be deleted from any method without departing from the scope of the subject matter described herein. Aspects of any of the above-described example embodiments can be combined with aspects of any other example embodiments to form further example embodiments without losing the desired effect.

[0279] The term 'including' is used herein to mean including the identified method, block, or element, but not an exclusive list of such blocks or elements, and the method or apparatus may include additional blocks or elements.

[0280] As used herein, “at least one of the following: ” and “at least one of ”, and similar wording (where the list of two or more elements is connected by “and” or “or”) means at least any one of these elements, or at least any two or more of these elements, or at least all of these elements. The expression “or” can be understood as a non-exclusive “or”, and therefore the list of mutually optional elements or two or more elements indicated by the expression “or” means at least any one of these elements, or at least any two or more of these elements, or at least all of these elements.

[0281] Although a subject may be referred to as the 'first' or 'second' subject, this does not necessarily indicate any order or importance of the subject. Rather, these attributes can be used simply to distinguish subjects.

[0282] As used in this application, the term 'circuit system' may refer to one or more or all of the following: (a) a hardware circuit implementation only (such as an implementation in an analog and / or digital circuit system only); (b) a combination of hardware circuitry and software, such as (if applicable): (i) a combination of (multiple) analog and / or digital hardware circuitry with software / firmware; and (ii) any portion of a hardware processor (including (multiple) digital signal processors), software, and (multiple) memory having software, which work together to cause a device such as a mobile phone or server to perform various functions); and (c) (multiple) hardware circuitry and / or (multiple) processors, such as (multiple) microprocessors or portions thereof, which require software (e.g., firmware) to function, but may be absent when not required to function. This conventional definition of circuitry applies to all uses of the term in this application, including in any claim.

[0283] As another example, as used in this application, the term "circuit system" also encompasses only the implementation of hardware circuitry or processors (or processors) or portions thereof and their accompanying software and / or firmware. For instance, if applicable to a particular claim element, the term "circuit system" also encompasses baseband integrated circuits or processor integrated circuits for mobile devices, or similar integrated circuits in servers, cell network devices, or other computing or networking devices.

[0284] It should be understood that the above description is given by way of example only, and various modifications can be made by those skilled in the art. The above specification, examples, and data provide a complete description of the structure and use of exemplary embodiments. Although various embodiments have been described above with a degree of specificity or by reference to one or more individual embodiments, those skilled in the art can make many modifications to the disclosed embodiments without departing from the scope of this specification.

Claims

1. A user equipment, comprising: A component for configuring an uplink scheduling frequency range to receive from a base station, wherein the uplink scheduling frequency range is associated with a reference position or reference range in the frequency domain, and wherein the uplink scheduling frequency range is limited within the channel bandwidth. as well as Components used to perform at least one of the following: At least one maximum power reduction requirement is determined based on the configuration of the uplink scheduling frequency range, or Receive the resource allocation for transmitting uplink signals within the uplink scheduling frequency range; as well as Components for transmitting the uplink signal to the base station within the uplink scheduling frequency range according to at least one of the following: The at least one maximum power reduction requirement, or The resource allocation within the uplink scheduling frequency range.

2. The user equipment according to claim 1, further comprising: A component for further determining the at least one maximum power reduction requirement based on the resource allocation.

3. The user equipment according to claim 1 or 2, wherein the channel bandwidth of the user equipment includes the uplink channel bandwidth of the user equipment.

4. The user equipment according to any one of claims 1 to 3, wherein the reference position or the reference range is substantially located in the middle of the uplink scheduling frequency range or within the uplink scheduling frequency range.

5. The user equipment according to any one of claims 1 to 4, wherein the configuration of the uplink scheduling frequency range includes an indication of the reference location or the reference range.

6. The user equipment according to any one of claims 1 to 5, wherein the reference location includes at least one of the following: The reference position of the DC component in the frequency domain, The reference position of the DC subcarrier in the frequency domain, The center frequency of the uplink scheduling frequency range Refer to the local oscillator frequency, or The reference center frequency of the user equipment used for uplink and downlink communication.

7. The user equipment according to any one of claims 1 to 6, further comprising: A component for selecting the reference position from a predefined frequency range. A component for receiving an indication of the reference position in the configuration of the uplink scheduling frequency range, or A component for determining the reference location based on the uplink scheduling frequency range.

8. The user equipment according to any one of claims 1 to 7, further comprising: A component for receiving configuration of downlink scheduling frequency range from the base station, wherein the uplink scheduling frequency range is limited to the downlink scheduling frequency range.

9. The user equipment according to any one of claims 1 to 8, further comprising: A component for receiving, from the base station, an update to the configuration of the uplink scheduling frequency range or an update to the configuration of the downlink scheduling frequency range, wherein the update to the configuration of the uplink scheduling frequency range or the update to the configuration of the downlink scheduling frequency range is not associated with any of the following: a change in the reference location, a change in the duration of a guard period between the transmission of the uplink signal and the reception of the downlink signal, or the introduction of the guard period, or A component for receiving an update of the configuration of the uplink scheduling frequency range or the downlink scheduling frequency range from the base station, wherein the update of the configuration of the uplink scheduling frequency range or the update of the configuration of the downlink scheduling frequency range is associated with a change in the reference position and one of the following: an increase in the duration of a guard period between the transmission of the uplink signal and the reception of the downlink signal or the introduction of the guard period.

10. The user equipment according to any one of claims 1 to 9, further comprising: A component for further determining the at least one maximum power reduction requirement based on the reference position.

11. The user equipment according to any one of claims 1 to 9, further comprising: A component for selecting the actual local oscillator location in the frequency domain for up-conversion or down-conversion; as well as A component for further determining the at least one maximum power reduction requirement based on the actual local oscillator location.

12. The user equipment according to claim 11, further comprising: A component for sending an indication of the actual local oscillator location to the base station.

13. The user equipment according to any one of claims 1 to 12, wherein the at least one maximum power reduction requirement includes a maximum power reduction MPR value or an additional maximum power reduction A-MPR value.

14. The user equipment according to any one of claims 1 to 13, further comprising: A component for sending an indication to the base station of the maximum uplink scheduling frequency range or the maximum downlink scheduling frequency range of the user equipment, wherein the maximum uplink scheduling frequency range or the maximum downlink scheduling frequency range of the user equipment is narrower than the channel bandwidth.

15. A base station, comprising: Components for sending at least one of the following to a user equipment: Configuration of the uplink scheduling frequency range for the user equipment, wherein the uplink scheduling frequency range is associated with a reference position or reference range in the frequency domain, and wherein the uplink scheduling frequency range is limited to the channel bandwidth, or Resource allocation for transmitting uplink signals within the uplink scheduling frequency range; as well as Components for receiving from the user equipment the uplink signal transmitted within the uplink scheduling frequency range according to at least one of the following: The at least one maximum power reduction requirement, or The resource allocation within the uplink scheduling frequency range.

16. A method comprising: The configuration of the uplink scheduling frequency range is received from the base station, wherein the uplink scheduling frequency range is associated with a reference position or reference range in the frequency domain, and wherein the uplink scheduling frequency range is limited to the channel bandwidth. as well as Perform at least one of the following: At least one maximum power reduction requirement is determined based on the configuration of the uplink scheduling frequency range, or Receive the resource allocation for transmitting uplink signals within the uplink scheduling frequency range; as well as The uplink signal is transmitted to the base station within the uplink scheduling frequency range according to at least one of the following: The at least one maximum power reduction requirement, or The resource allocation within the uplink scheduling frequency range.

17. An apparatus comprising: At least one processor; as well as At least one memory stores instructions that, when executed by the at least one processor, cause the device to at least: The configuration of the uplink scheduling frequency range is received from the base station, wherein the uplink scheduling frequency range is associated with a reference position or reference range in the frequency domain, and wherein the uplink scheduling frequency range is limited to the channel bandwidth. as well as Perform at least one of the following: At least one maximum power reduction requirement is determined based on the configuration of the uplink scheduling frequency range, or Receive the resource allocation for transmitting uplink signals within the uplink scheduling frequency range; as well as The uplink signal is transmitted to the base station within the uplink scheduling frequency range according to at least one of the following: The at least one maximum power reduction requirement, or The resource allocation within the uplink scheduling frequency range.

18. An apparatus comprising: At least one processor; as well as At least one memory stores instructions that, when executed by the at least one processor, cause the device to at least: Send at least one of the following to the user equipment: Configuration of the uplink scheduling frequency range for the user equipment, wherein the uplink scheduling frequency range is associated with a reference position or reference range in the frequency domain, and wherein the uplink scheduling frequency range is limited to the channel bandwidth, or Resource allocation for transmitting uplink signals within the uplink scheduling frequency range; and Receive from the user equipment the uplink signal transmitted within the uplink scheduling frequency range according to at least one of the following: The at least one maximum power reduction requirement, or The resource allocation within the uplink scheduling frequency range.

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