Communication method and communication apparatus

Abstract

Provided in the present application are a communication method and a communication apparatus. The method comprises: a terminal device receives first scheduling information, and receives a first downlink channel or a first downlink signal on the basis of the first scheduling information, wherein the first scheduling information is used for scheduling the first downlink channel or the first downlink signal, frequency domain resources of the first downlink channel or the first downlink signal comprise a first frequency domain resource and a second frequency domain resource, a transmission power of the first downlink channel or the first downlink signal on the first frequency domain resource is a first transmission power, a transmission power of the first downlink channel or the first downlink signal on the second frequency domain resource is a second transmission power, and the first transmission power is less than the second transmission power. By using the method, terminal devices can receive first downlink channels or first downlink signals on frequency domain resources of different transmission powers, which not only reduces cross-link interference, but also reduces performance loss of downlink channels or downlink signals, thereby ensuring transmission performance.

Description

A communication method and a communication device

[0001] This application claims priority to Chinese Patent Application No. 202510127667.6, filed on January 27, 2025, entitled "A Communication Method and Communication Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of communication technology, and more specifically, to a communication method and a communication device. Background Technology

[0003] With the rapid development of 5G mobile communication technology, new radio (NR), a variety of communication needs have emerged. To improve uplink throughput and reduce transmission latency in time division duplex (TDD) systems, the main duplexing technologies currently under research include: dynamic TDD, subband non-overlapping full duplex (SBFD), or simultaneous on-frequency full duplex.

[0004] However, in actual communication processes, cross-link interference (CLI) may occur. This CLI can be caused by neighboring cells or by the cell itself. For example, with dynamic TDD or SBFD technologies, when cell A is transmitting downlink data, if its neighboring cell B is receiving uplink data, cell A's downlink transmission will interfere with cell B's uplink reception. As another example, with simultaneous full-duplex (SMLL) technology, cell C's downlink transmission can cause cross-link interference to cell C's uplink reception. Therefore, reducing CLI and improving transmission performance is a problem that needs to be considered. Summary of the Invention

[0005] This application provides a communication method and a communication device that can reduce cross-link interference (CLI) and improve transmission performance.

[0006] Firstly, a communication method is provided. This method can be applied to the terminal side, such as a terminal device or a communication module within a terminal device, or a circuit or chip within a terminal device responsible for communication functions (such as a modem chip, also known as a baseband chip, or a system-on-chip (SoC) chip containing a modem core, or a system-in-package (SIP) chip). The method will be described using an application to a terminal device as an example.

[0007] In this method, first scheduling information is received, which is used to schedule a first downlink channel or a first downlink signal. The frequency domain resources (also referred to as frequency resources) of the first downlink channel or the first downlink signal include first frequency domain resources and second frequency domain resources. The transmit power of the first downlink channel or the first downlink signal on the first frequency domain resources is a first transmit power, and the transmit power of the first downlink channel or the first downlink signal on the second frequency domain resources is a second transmit power. The first transmit power is less than the second transmit power. The first downlink channel or the first downlink signal is received according to the first scheduling information.

[0008] For example, the first downlink channel may be a downlink data channel, such as a physical downlink shared channel (PDSCH), or it may be a downlink control channel, such as a physical downlink control channel (PDCCH). The first downlink signal may be a downlink reference signal, such as a channel state information reference signal (CSI-RS) or a synchronization signal block (SSB), without limitation.

[0009] For example, the statement that the first transmit power is less than the second transmit power can be replaced by describing it as: the first transmit power is different from the second transmit power, or firstly, the second transmit power is greater than the first transmit power. It is understood that the first transmit power being less than the second transmit power can be seen as the access network device reducing the transmit power of the first downlink channel or the first downlink signal to obtain the first transmit power and the second transmit power. For example, if the transmit power of the first downlink channel or the first downlink signal transmitted on the first frequency domain resource decreases, but the transmit power of the first downlink channel or the first downlink signal transmitted on the first frequency domain resource does not decrease, then the first transmit power is less than the second transmit power; as another example, if the transmit power of the first downlink channel or the first downlink signal transmitted on the first frequency domain resource decreases by a first value, and the transmit power of the first downlink channel or the first downlink signal transmitted on the first frequency domain resource decreases by a second value, and the first value is greater than the second value, then the first transmit power is less than the second transmit power. No specific limitation is made in this regard.

[0010] Using the above method, the terminal device can receive the first scheduling information and, based on the first scheduling information, receive the first downlink channel or the first downlink signal. It is understood that the transmit power of the first downlink channel or the first downlink signal differs on the first frequency domain resources and the second frequency domain resources; in other words, the magnitude of the reduction in transmit power on the first frequency domain resources and the second frequency domain resources differs. Compared to reducing transmit power on all frequency domain resources of the entire carrier, this implementation can avoid or reduce cross-link interference problems, while also avoiding excessive performance loss of the downlink channel or downlink signal, thus ensuring system transmission performance.

[0011] In one possible design, when the first downlink channel is a downlink data channel and the precoding granularity of the first downlink channel is a sub-band, the first frequency domain resources include one or more first precoding resource block groups (PRGs), the second frequency domain resources include one or more second PRGs, and the transmit power on all resource blocks (RBs) contained in any of the one or more first PRGs is the same, and the transmit power on all RBs contained in any of the one or more second PRGs is the same.

[0012] In other words, the transmit power of the multiple RBs contained in any first PRG is the same, and the transmit power of the multiple RBs contained in any second PRG is the same. That is to say, the transmit power of the first downlink channel or the first downlink signal on all RBs within the same PRG remains the same, while the transmit power of the first downlink channel or the first downlink signal in different PRGs may be the same or different.

[0013] Understandably, the transmit power of one or more first PRGs contained in the first frequency domain resource is the first transmit power, and the transmit power of one or more second PRGs contained in the second frequency domain resource is the second transmit power.

[0014] It should be noted that, for the case where the first frequency domain resource includes multiple first PRGs, the transmit power of the first downlink channel or the first downlink signal on all RBs within the multiple first PRGs remains the same; for the case where the second frequency domain resource includes multiple second PRGs, the transmit power of the first downlink channel or the first downlink signal on all RBs within the multiple second PRGs remains the same.

[0015] Using the above method, for downlink data channels employing subband precoding, access network equipment can reduce the transmit power of the first downlink channel or the first downlink signal at the PRG granularity. That is, the downlink data channel transmission on all RBs of a PRG either does not reduce the transmit power or reduces the transmit power by the same amount. In this implementation, the transmit power of downlink data channel transmission within a PRG remains the same, which is beneficial for the terminal equipment to perform joint channel estimation on the data within a PRG when receiving the downlink data channel, ensuring that the channel estimation performance within a PRG does not degrade or reduces the channel estimation performance loss, thereby ensuring the performance of downlink data channel transmission.

[0016] In one possible design, when the first downlink channel is a downlink data channel and the precoding granularity of the first downlink channel is a sub-band, the first frequency domain resource includes the first RB, the second frequency domain resource includes the second RB, and the first RB and the second RB belong to the same PRG.

[0017] Understandably, the first RB has the first transmission power, and the second RB has the second transmission power.

[0018] Furthermore, the access network device can indicate power information (e.g., a first transmit power or a second transmit power) and its corresponding frequency domain resources (e.g., a first frequency domain resource or a second frequency domain resource) to the terminal device through semi-static signaling configuration or dynamic indication.

[0019] Using the above method, for downlink data channels employing subband precoding, the access network device can reduce the transmit power of the first downlink channel or the first downlink signal at the RB (RB-like) granularity. This means that the downlink data channel transmission portion on some RBs of a PRG (Periodic Generation Group) can reduce its transmit power, while the downlink data channel transmission portion on other RBs remains unchanged. In other words, the power reduction value for downlink data channel transmission on different RBs of a PRG can be different. In this implementation, the transmit power of downlink data channel transmission on different RBs of a PRG can be different. When the terminal device receives the downlink data channel and performs joint channel estimation on the data within a PRG, it can correct the channel estimation result based on the received power information to ensure that the channel estimation performance within a PRG does not degrade or reduces channel estimation performance loss, thereby ensuring the performance of downlink data channel transmission.

[0020] In one possible design, when the first downlink channel is a downlink control channel and the precoding granularity of the first downlink channel is a sub-band, the first frequency domain resources include one or more first resource element group (REG) bundles, the second frequency domain resources include one or more second REG bundles, and the transmit power of all REGs contained in any of the one or more first REG bundles is the same, and the transmit power of all REGs contained in any of the one or more second REG bundles is the same.

[0021] In other words, the transmit power of multiple REGs contained in any first REG set is the same, and the transmit power of multiple REGs contained in any second REG set is the same. That is to say, the transmit power of the first downlink channel or the first downlink signal on all REGs within the same REG set remains the same, while the transmit power of the first downlink channel or the first downlink signal in different REG sets may be the same or different.

[0022] Understandably, the transmit power of one or more first REG sets contained in the first frequency domain resource is the first transmit power, and the transmit power of one or more second REG sets contained in the second frequency domain resource is the second transmit power.

[0023] It should be noted that, for the case where the first frequency domain resources include multiple first REG sets, the transmit power of the first downlink channel or the first downlink signal on all REGs within the multiple first REG sets remains the same; for the case where the second frequency domain resources include multiple second REG sets, the transmit power of the first downlink channel or the first downlink signal on all REGs within the multiple second REG sets remains the same.

[0024] Using the above method, for downlink control channels employing subband precoding, access network devices can reduce the transmit power of the first downlink channel or the first downlink signal at the REG set granularity. That is, the downlink data channel transmission on all REGs of a REG set either does not reduce the transmit power or reduces the transmit power by the same amount. In this implementation, the transmit power of downlink data channel transmission within a REG set remains the same, which is beneficial for terminal devices to perform joint channel estimation on the data within a REG set when receiving the downlink data channel, ensuring that the channel estimation performance within a REG set does not degrade or reduces the channel estimation performance loss, thereby ensuring the performance of downlink data channel transmission.

[0025] In one possible design, when the first downlink channel is a downlink control channel and the precoding granularity of the first downlink channel is a sub-band, the first frequency domain resource includes a first REG, the second frequency domain resource includes a second REG, and the first REG and the second REG belong to the same REG set.

[0026] Understandably, the transmission power of the first REG is the first transmission power, and the transmission power of the second REG is the second transmission power.

[0027] Furthermore, the access network device can indicate power information (e.g., a first transmit power or a second transmit power) and its corresponding frequency domain resources (e.g., a first frequency domain resource or a second frequency domain resource) to the terminal device through semi-static signaling configuration or dynamic indication.

[0028] Using the above method, for downlink control channels employing subband precoding, access network equipment can reduce the transmit power of the first downlink channel or the first downlink signal at the REG granularity. This means that the downlink data channel transmission portion within some REGs of a REG set can reduce its transmit power, while the downlink data channel transmission portion within other REGs does not reduce its transmit power. In other words, the power reduction value for downlink data channel transmission differs across different REGs within a REG set. In this implementation, the transmit power of downlink data channels on different REGs of a REG set can be different. When the terminal equipment receives the downlink data channel and performs joint channel estimation on the data within a REG set, it can correct the channel estimation result based on the received power information to ensure that the channel estimation performance within a REG set does not degrade or reduces channel estimation performance loss, thereby ensuring the performance of downlink data channel transmission.

[0029] In one possible design, when the first downlink channel is a downlink control channel or a downlink data channel, and the precoding granularity of the first downlink channel is wideband, receiving the first downlink channel according to the first scheduling information includes: receiving the first downlink channel within one of the frequency domain resources in the first frequency domain resource or the second frequency domain resource.

[0030] Using the above method, for downlink control channels or downlink data channels employing wideband precoding, the terminal device can receive the downlink control channel or downlink data channel on the first frequency domain resource or the second frequency domain resource. In other words, the access network device can schedule the transmission of the downlink control channel or downlink data channel entirely within the reduced-power frequency domain resource range (also known as the frequency domain resource range) or the non-reduced-power frequency domain resource range. That is, the access network device does not schedule the transmission of the downlink control channel or downlink data channel across reduced-power frequency domain resources and non-reduced-power frequency domain resources. This allows the terminal device to perform channel estimation for downlink control channels or downlink data channels with the same transmit power when receiving the downlink control channel or downlink data channel, thus ensuring downlink transmission performance.

[0031] In one possible design, when the first downlink channel is a downlink control channel or a downlink data channel, and the precoding granularity of the first downlink channel is wideband, the first downlink channel corresponds to the first precoding when transmitted on the first frequency domain resource, and corresponds to the second precoding when transmitted on the second frequency domain resource.

[0032] Understandably, this implementation is based on the premise that the terminal device can receive the first downlink channel on the first frequency domain resources and the second frequency domain resources. In other words, the access network device can schedule the first downlink channel across the reduced-power frequency domain resources and the non-reduced-power frequency domain resources.

[0033] It should be noted that the first precoding used for the first downlink channel transmission on the first frequency domain resources is different from the second precoding used for the first downlink channel transmission on the second frequency domain resources. The difference between the first and second precoding is from the perspective of the terminal device; in this implementation, the terminal device does not need to perform joint channel estimation for the first downlink channel transmission within both the first and second frequency domain resources.

[0034] This application addresses the transmission of a first downlink channel by an access network device on both the first and second frequency domain resources. The device may use the same precoding or different precoding, and there is no limitation on this.

[0035] Using the above method, for downlink control channels or downlink data channels employing wideband precoding, terminal devices can receive downlink control channels or downlink data channels on the first frequency domain resources and the second frequency domain resources. In other words, access network devices can fully schedule the transmission of the downlink control channel or downlink data channel within the range of reduced-power frequency domain resources and the range of non-reduced-power frequency domain resources. That is, access network devices can schedule the transmission of the downlink control channel or downlink data channel across reduced-power frequency domain resources and non-reduced-power frequency domain resources, thus ensuring downlink transmission performance.

[0036] In one possible design, when the first downlink channel is a downlink control channel or a downlink data channel, and the precoding granularity of the first downlink channel is wideband, the first downlink channel corresponds to the third precoding when transmitted on the first frequency domain resources and the second frequency domain resources.

[0037] Furthermore, the access network device can indicate power information (e.g., a first transmit power or a second transmit power) and its corresponding frequency domain resources (e.g., a first frequency domain resource or a second frequency domain resource) to the terminal device through semi-static signaling configuration or dynamic indication.

[0038] Understandably, this implementation is based on the premise that the terminal device can receive the first downlink channel on the first frequency domain resources and the second frequency domain resources. In other words, the access network device can schedule the first downlink channel across the reduced-power frequency domain resources and the non-reduced-power frequency domain resources.

[0039] It should be noted that the precoding used for the transmission of the first downlink channel on the first frequency domain resources and the second frequency domain resources is the same. This is from the perspective of the terminal device. In this implementation, after receiving the first downlink channel, when the terminal device performs joint channel estimation on the first downlink channel on the first frequency domain resources and the second frequency domain resources, it can correct the channel estimation result based on the received power information to ensure that the downlink channel estimation performance does not degrade or reduces the channel estimation performance loss, thereby ensuring the performance of downlink data channel transmission.

[0040] This application addresses the transmission of a first downlink channel by an access network device on both the first and second frequency domain resources. The device may use the same precoding or different precoding, and there is no limitation on this.

[0041] Using the above method, for downlink control channels or downlink data channels employing wideband precoding, the terminal device can receive downlink control channels or downlink data channels on the first frequency domain resources and the second frequency domain resources. Subsequently, when performing joint channel estimation on the first downlink channel on the first frequency domain resources and the second frequency domain resources, the channel estimation results can be corrected based on the received power information to ensure that the downlink channel estimation performance does not degrade or reduces the channel estimation performance loss, thereby ensuring the performance of downlink data channel transmission.

[0042] In one possible design, when the first downlink signal is a reference signal or a synchronization signal, receiving the first downlink signal according to the first scheduling information includes: receiving the first downlink signal within a frequency domain resource range of either the first frequency domain resource or the second frequency domain resource.

[0043] In other words, when configuring a CSI-RS resource or SSB resource, the access network device can configure it without crossing the range of frequency domain resources with reduced power or without reduced power. Specifically, the access network device can configure the CSI-RS resource or SSB resource entirely within the range of frequency domain resources with reduced power or without reduced power. This means the access network device can schedule the first downlink signal on either the first or second frequency domain resource.

[0044] Understandably, access network devices can be configured with two sets of resources, one corresponding to the first frequency domain resource and the other to the second frequency domain resource. The transmit power of the first frequency domain resource and the second frequency domain resource are different, so the access network device does not need to schedule across resources.

[0045] In one possible design, when the first downlink signal is a reference signal or a synchronization signal, receiving the first downlink signal according to the first scheduling information includes: receiving the first downlink signal on a first frequency domain resource and a second frequency domain resource; wherein the first frequency domain resource includes one or more first resource block groups (RBGs), the second frequency domain resource includes one or more second RBGs, any one of the one or more first RBGs corresponds to a first reporting subband of a channel state information (CSI) report, any one of the one or more second RBGs corresponds to a second reporting subband of a CSI report, and the CSI report is associated with the first downlink signal.

[0046] In other words, access network equipment can reduce transmit power according to the subband granularity reported by the CSI.

[0047] Understandably, when configuring a CSI-RS resource or SSB resource, an access network device can span both power-reduced and non-power-reduced frequency domain resource ranges. In other words, when configuring a CSI-RS resource or SSB resource, the access network device can configure it within both the power-reduced and non-power-reduced frequency domain resource ranges. Alternatively, part of the frequency domain resource of the CSI-RS resource or SSB resource may be located within the power-reduced range, while another part may be located within the non-power-reduced range. This means the access network device can schedule the first downlink signal on both the first and second frequency domain resources.

[0048] Furthermore, if the CSI-RS resource is used for CSI measurement reporting, that is, the CSI-RS resource is associated with a CSI measurement report. The transmit power within a reporting subband of the CSI-RS resource remains the same, while the transmit power of different reporting subbands of the CSI-RS resource can be different.

[0049] Furthermore, the access network device can indicate power information (e.g., a first transmit power or a second transmit power) and its corresponding frequency domain resources (e.g., a first frequency domain resource or a second frequency domain resource) to the terminal device through semi-static signaling configuration or dynamic indication.

[0050] Using the above method, after receiving the first downlink signal, when the terminal device performs joint channel estimation on the first downlink signal in the first frequency domain resources and the second frequency domain resources, it can correct the channel estimation result based on the received power information to ensure that the downlink signal estimation accuracy does not decrease, thereby ensuring the performance of downlink signal transmission.

[0051] In one possible design, the method further includes: receiving first information, wherein the first information is used to indicate a first frequency domain resource and / or a second frequency domain resource, or the first information is used to indicate a third frequency domain resource and / or a fourth frequency domain resource, wherein the third frequency domain resource includes the first frequency domain resource and the fourth frequency domain resource includes the second frequency domain resource.

[0052] In one possible design, second information is received, wherein the second information is used to indicate the absolute value of the first transmit power and / or the absolute value of the second transmit power, or, the second information is used to indicate the value of the second transmit power and a first offset value, the first offset value being the difference between the first transmit power and the second transmit power, or, the second information is used to indicate the value of the first transmit power and a second offset value, the second offset value being the difference between the second transmit power and the first transmit power, or, the second information is used to indicate a first offset value, the first offset value being the difference between the first transmit power and the second transmit power.

[0053] Using the above method, the terminal device can determine the first frequency domain resources and / or the second frequency domain resources by receiving the first information, and can determine the first transmit power and the second transmit power by receiving the second information. Therefore, it can selectively receive the first downlink channel or the first downlink signal on different frequency domain resources, ensuring that the estimation accuracy of the downlink channel or the downlink signal does not decrease, thereby guaranteeing the performance of downlink transmission. By reducing the transmit power of the first downlink channel or the first downlink signal on some frequency domain resources, it is possible to reduce cross-link interference while minimizing the impact on the performance of the first downlink channel or the first downlink signal.

[0054] Secondly, a communication method is provided. This method can be applied to the network side, such as access network equipment, modules (e.g., circuits, chips, or chip systems) within the access network equipment, or logical nodes, logical modules, or software that can implement all or part of the functions of the access network equipment. The application of this method to an access network equipment will be used as an example for illustration.

[0055] In this method, first scheduling information is sent, which is used to schedule a first downlink channel or a first downlink signal. The frequency domain resources of the first downlink channel or the first downlink signal include first frequency domain resources and second frequency domain resources. The transmit power of the first downlink channel or the first downlink signal on the first frequency domain resources is a first transmit power, and the transmit power of the first downlink channel or the first downlink signal on the second frequency domain resources is a second transmit power. The first transmit power is less than the second transmit power. The first downlink channel or the first downlink signal is sent according to the first scheduling information.

[0056] Using the above method, the access network device can schedule the first downlink channel or the first downlink signal by sending first scheduling information, and send the first downlink channel or the first downlink signal according to the first scheduling information. It is understood that the transmit power of the first downlink channel or the first downlink signal differs on the first frequency domain resources and the second frequency domain resources; in other words, the amount of power reduction of the first downlink channel or the first downlink signal on the first frequency domain resources and the second frequency domain resources differs. Compared to reducing the transmit power on all frequency domain resources of the entire carrier, this implementation can avoid or reduce cross-link interference problems, while avoiding excessive performance loss of the downlink channel or downlink signal, thus ensuring system transmission performance.

[0057] In one possible design, when the first downlink channel is a downlink data channel and the precoding granularity of the first downlink channel is a sub-band, the first frequency domain resource includes one or more first PRGs, the second frequency domain resource includes one or more second PRGs, the transmit power on all RBs contained in any of the one or more first PRGs is the same, and the transmit power on all RBs contained in any of the one or more second PRGs is the same.

[0058] In one possible design, when the first downlink channel is a downlink data channel and the precoding granularity of the first downlink channel is a sub-band, the first frequency domain resource includes the first RB, the second frequency domain resource includes the second RB, and the first RB and the second RB belong to the same PRG.

[0059] In one possible design, when the first downlink channel is a downlink control channel and the precoding granularity of the first downlink channel is a sub-band, the first frequency domain resources include one or more first REG sets, the second frequency domain resources include one or more second REG sets, the transmit power of all REGs contained in any of the one or more first REG sets is the same, and the transmit power of all REGs contained in any of the one or more second REG sets is the same.

[0060] In one possible design, when the first downlink channel is a downlink control channel and the precoding granularity of the first downlink channel is a sub-band, the first frequency domain resource includes a first REG, the second frequency domain resource includes a second REG, and the first REG and the second REG belong to the same REG set.

[0061] In one possible design, when the first downlink channel is a downlink control channel or a downlink data channel, and the precoding granularity of the first downlink channel is wideband, the first downlink channel is transmitted according to the first scheduling information, including: transmitting the first downlink channel within one of the frequency domain resources in the first frequency domain resource or the second frequency domain resource.

[0062] In one possible design, when the first downlink channel is a downlink control channel or a downlink data channel, and the precoding granularity of the first downlink channel is wideband, the first downlink channel corresponds to the first precoding when transmitted on the first frequency domain resource, and corresponds to the second precoding when transmitted on the second frequency domain resource.

[0063] In one possible design, when the first downlink channel is a downlink control channel or a downlink data channel, and the precoding granularity of the first downlink channel is wideband, the first downlink channel corresponds to the third precoding when transmitted on the first frequency domain resources and the second frequency domain resources.

[0064] In one possible design, when the first downlink signal is a reference signal or a synchronization signal, the first downlink signal is transmitted according to the first scheduling information, including: transmitting the first downlink signal within a frequency domain resource range of either the first frequency domain resource or the second frequency domain resource.

[0065] In one possible design, when the first downlink signal is a reference signal or a synchronization signal, the first downlink signal is transmitted according to the first scheduling information, including: transmitting the first downlink signal on a first frequency domain resource and a second frequency domain resource; wherein the first frequency domain resource includes one or more first RBGs, the second frequency domain resource includes one or more second RBGs, any one of the one or more first RBGs corresponds to a first reporting subband of a CSI report, any one of the one or more second RBGs corresponds to a second reporting subband of a CSI report, and the CSI report is associated with the first downlink signal.

[0066] In one possible design, the method further includes: sending first information, wherein the first information is used to indicate a first frequency domain resource and / or a second frequency domain resource, or, the first information is used to indicate a third frequency domain resource and / or a fourth frequency domain resource, wherein the third frequency domain resource includes the first frequency domain resource and the fourth frequency domain resource includes the second frequency domain resource.

[0067] In one possible design, the method further includes: sending second information, wherein the second information is used to indicate the absolute value of the first transmit power and / or the absolute value of the second transmit power, or, the second information is used to indicate the value of the second transmit power and a first offset value, the first offset value being the difference between the first transmit power and the second transmit power, or, the second information is used to indicate the value of the first transmit power and a second offset value, the second offset value being the difference between the second transmit power and the first transmit power, or, the second information is used to indicate a first offset value, the first offset value being the difference between the first transmit power and the second transmit power.

[0068] The beneficial effects of the second aspect and some of its implementations can be referred to the description of the first aspect and some of its implementations, which will not be repeated here.

[0069] Thirdly, a communication device is provided. This communication device has the functionality to implement the first aspect and some of its implementations. For example, the communication device includes modules, units, or means corresponding to the operations involved in the first aspect and some of its implementations. These modules, units, or means can be implemented through software, hardware, or a combination of software and hardware.

[0070] In one possible design, the communication device includes: a communication unit for receiving first scheduling information, the first scheduling information being used to schedule a first downlink channel or a first downlink signal, the frequency domain resources of the first downlink channel or the first downlink signal including first frequency domain resources and second frequency domain resources, the transmission power of the first downlink channel or the first downlink signal on the first frequency domain resources being a first transmission power, the transmission power of the first downlink channel or the first downlink signal on the second frequency domain resources being a second transmission power, and the first transmission power being less than the second transmission power; the communication unit is further configured to receive the first downlink channel or the first downlink signal according to the first scheduling information.

[0071] The communication unit can perform the receiving and sending processes in the aforementioned first aspect and some implementations thereof, and the processing unit can perform other processes in the aforementioned first aspect and some implementations thereof besides receiving and sending.

[0072] The aforementioned communication device may be a terminal device, a communication module in a terminal device, or a chip in a terminal device that is responsible for communication functions, such as a modem chip (also known as a baseband chip) or a SoC or SIP chip that contains a modem module.

[0073] Fourthly, a communication device is provided. This communication device has the functionality to implement the second aspect and some of its implementations. For example, the communication device includes modules, units, or means corresponding to the operations involved in the second aspect and some of its implementations. These modules, units, or means can be implemented in software, hardware, or a combination of software and hardware.

[0074] In one possible design, the communication device includes: a communication unit for transmitting first scheduling information, the first scheduling information being used to schedule a first downlink channel or a first downlink signal, the frequency domain resources of the first downlink channel or the first downlink signal including first frequency domain resources and second frequency domain resources, the transmission power of the first downlink channel or the first downlink signal on the first frequency domain resources being a first transmission power, the transmission power of the first downlink channel or the first downlink signal on the second frequency domain resources being a second transmission power, and the first transmission power being less than the second transmission power; the communication unit is further configured to transmit the first downlink channel or the first downlink signal according to the first scheduling information.

[0075] The communication unit can perform the receiving and sending processes in the aforementioned second aspect and some of its implementations, and the processing unit can perform other processes in the aforementioned second aspect and some of its implementations besides receiving and sending.

[0076] The aforementioned communication device may be an access network device, or a module (such as a circuit, chip, or chip system) in the access network device, or a logical node, logical module, or software that can realize all or part of the functions of the access network device.

[0077] Fifthly, a communication device is provided, comprising an interface circuit and one or more processors. The one or more processors are coupled to a memory. The memory stores part or all of a computer program or instructions necessary for implementing the functions described in the first or second aspect and some implementations thereof. The one or more processors are executable to carry out the computer program or instructions, which, when executed, cause the communication device to implement the methods described in the first or second aspect and some implementations thereof. The interface circuit is used to implement communication functions within the communication device and / or communication functions between the communication device and other devices or components.

[0078] In one possible design, the processor is used to communicate with other devices or components through the interface circuit.

[0079] In one possible design, the communication device may also include the memory.

[0080] The aforementioned communication device may be a terminal device, a communication module in a terminal device, or a chip in a terminal device that is responsible for communication functions, such as a modem chip (also known as a baseband chip) or a SoC or SIP chip that contains a modem module.

[0081] The aforementioned communication device may be an access network device, or a module (such as a circuit, chip, or chip system) in the access network device, or a logical node, logical module, or software that can realize all or part of the functions of the access network device.

[0082] In a sixth aspect, a communication system is provided, which includes the communication device of the third aspect and / or the communication device of the fourth aspect.

[0083] In a seventh aspect, a computer-readable storage medium is provided. This computer-readable storage medium stores computer program code or instructions, which, when read and executed by a computer, cause the methods described in the first or second aspect and some of their implementations to be implemented.

[0084] Eighthly, a computer program product is provided. The computer program product includes computer program code or instructions that, when read and executed by a computer, cause the methods described in the first or second aspect and some of their implementations to be implemented.

[0085] Ninthly, a computer program is provided. When the computer program is run, it causes the methods in the first or second aspect and some implementations thereof to be implemented.

[0086] It should be understood that the beneficial effects of the third to ninth aspects mentioned above can be referred to the relevant descriptions of the first or second aspects and some of their implementation methods, which will not be explained here for the sake of brevity. Attached Figure Description

[0087] Figure 1 is a schematic diagram of a communication system applicable to this application;

[0088] Figure 2 is an example diagram of an open radio access network (O-RAN) system applicable to this application;

[0089] Figure 3 shows the network element function division and protocol layer structure of an access network device;

[0090] Figure 4 shows a schematic diagram of the time-frequency division of a traditional TDD scheme;

[0091] Figure 5 shows a schematic diagram of the time-frequency division of the dynamic TDD scheme;

[0092] Figure 6 shows a schematic diagram of the time-frequency division of the SBFD scheme;

[0093] Figure 7 shows a schematic diagram of the time-frequency division of the inter-cell asynchronous SBFD scheme;

[0094] Figure 8 shows a schematic diagram of the time-frequency division of the small simultaneous, same-frequency full-duplex scheme;

[0095] Figure 9 is a schematic flowchart of a communication method provided in an embodiment of this application;

[0096] Figure 10 is a schematic diagram of the absolute value of the transmission power of the access network device configured / indicated according to an embodiment of this application;

[0097] Figure 11 is a schematic diagram of the difference or offset value of the access network device configuration / indication transmit power provided in the embodiments of this application;

[0098] Figure 12 is a schematic diagram of the structure of a communication device provided in an embodiment of this application;

[0099] Figure 13 is a schematic diagram of another communication device provided in an embodiment of this application;

[0100] Figure 14 is a schematic diagram of a chip system provided in an embodiment of this application. Detailed Implementation

[0101] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0102] Before introducing the scheme of this application, the following points should be noted.

[0103] (1) In this application, unless otherwise specified or in case of logical conflict, the terms and / or descriptions of different embodiments are consistent and can be referenced by each other. The technical features of different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0104] (2) In this application, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, or B exists alone, where A and B can be singular or plural. In the textual description of this application, the character " / " generally indicates that the related objects before and after are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, and c can mean: a, or, b, or, c, or, a and b, or, a and c, or, b and c, or, a, b, and c. Where a, b, and c can be single or multiple.

[0105] (3) In this application, the terms "first," "second," "#1," and "#2," as well as various numerical designations, are used for ease of description and are not intended to limit the scope of the embodiments of this application. For example, they are used to distinguish different messages, rather than to describe a specific order or sequence. It should be understood that such descriptions can be interchanged where appropriate to describe solutions other than those in the embodiments of this application.

[0106] (4) In this application, “instruction” or “for instruction” can include both direct instruction and indirect instruction. When describing an instruction as being used to instruct A, it can include whether the instruction directly instructs A or indirectly instructs A, but does not necessarily mean that the instruction carries A.

[0107] The indication methods involved in the embodiments of this application should be understood to cover various methods that enable the party to be indicated to obtain the information to be indicated. The information to be indicated can be sent as a whole or divided into multiple sub-information and sent separately. Moreover, the sending period and / or sending time of these sub-information can be the same or different. This application does not limit the sending method, for example.

[0108] The "instruction information" in the embodiments of this application can be an explicit instruction, that is, a direct instruction through signaling, or an instruction obtained by combining other rules or parameters with the parameters indicated by the signaling, or by deduction. It can also be an implicit instruction, that is, an instruction obtained based on rules or relationships, or based on other parameters, or by deduction. This application does not specifically limit it in this regard.

[0109] (5) In this application, "protocol" can refer to a standard protocol in the field of communications, such as the 5th generation (5G) protocol, the NR protocol, and related protocols applied in future communication systems. This application does not limit this term. "Predefined" can include predefined terms, such as protocol definitions. "Preconfiguration" can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device. This application does not limit the implementation method.

[0110] (6) In this application, “message”, “information”, “signal” or “information element (IE)” can be used interchangeably. There are no restrictions on the name of the message or information, as long as it can achieve the corresponding function.

[0111] "Sending information to XX (device)" can be understood as the destination of the information being that device. This can include sending information to that device directly or indirectly. "Receiving information from XX (device), or receiving information from XX (device)" can be understood as the source of the information being that device. This can include receiving information from that device directly or indirectly. Information may undergo necessary processing between the source and destination, such as format changes, but the destination can understand the valid information from the source. Similar expressions in this application can be interpreted similarly, and will not be elaborated further here.

[0112] "Communication" can also be described as data transmission, information transmission, data processing, etc. "Transmission" includes sending and / or receiving. "Transmission" can be described as output. "Sending" can also be understood as the output of a chip interface, and "receiving" can be understood as the input of a chip interface. In other words, "sending" or "receiving" can occur between devices, for example, between access network devices and terminal devices via an air interface. "Sending" or "receiving" can also occur within a device, for example, between components, modules, chips, software modules, or hardware modules within a device via a bus, wiring, or interface.

[0113] For example, "sending information" can be understood as one device sending information to another device, or it can also be understood as one logical module within a device sending information to another logical module. For instance, "access network device sending information" can be understood as the access network device sending information to another device (such as a terminal), or it can be understood as logical module 1 within the access network device sending information to logical module 2 within the access network device. Similarly, "receiving information" can be understood as one device receiving information from another device, or it can also be understood as one logical module within a device receiving information from another logical module. For instance, "access network device receiving information" can be understood as the access network device receiving information from another device (such as a terminal), or it can be understood as logical module 1 within the access network device receiving information from logical module 2 within the access network device.

[0114] (7) In this application, the words “exemplary,” “for example,” etc., are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as an “example” in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the word “example” is intended to present the concept in a concrete manner. In the embodiments of this application, “of,” “corresponding, relevant,” “corresponding,” and “associate” may sometimes be used interchangeably, and it should be noted that their intended meanings are consistent unless their distinctions are emphasized.

[0115] (8) In this application, the configuration can be signaling configuration, such as radio resource control (RRC) messages, downlink control information (DCI), or system information block (SIB). Optionally, the signaling configuration can be provided to the terminal device by pre-configured signaling configuration, or configured to the terminal device through pre-configuration. Here, pre-configuration means defining or configuring the values ​​of corresponding parameters in advance by means of a protocol, and storing them in the terminal device when communicating with the terminal device. The pre-configured messages can be modified or updated when the terminal device is connected to the network.

[0116] The following describes the communication system to which this application applies.

[0117] The technical solutions of this application embodiment can be applied to various communication systems, such as: Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD) systems, 5G or NR systems and future communication systems, vehicle-to-everything (V2X) connectivity, where V2X can include vehicle-to-network (V2N), vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), vehicle-to-pedestrian (V2P), etc., Long Term Evolution-Vehicle (LTE-V) communication, vehicle-to-everything (V2X), machine-type communication (MTC), Internet of Things (IoT), Long Term Evolution-Machine (LTE-M) communication, machine-to-machine (M2M), etc.

[0118] Figure 1 is a schematic diagram of a communication system applicable to an embodiment of this application. As shown in Figure 1, the communication system 10 includes a radio access network (RAN) 100 and a core network (CN) 200. RAN 100 includes at least one RAN node (110a and 110b in Figure 1, collectively referred to as 110) and at least one terminal (120a-120j in Figure 1, collectively referred to as 120). RAN 100 may also include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices (not shown in Figure 1). Terminal 120 is wirelessly connected to RAN node 110. RAN node 110 is wirelessly or wired connected to CN 200. The core network device in CN 200 and RAN node 110 in RAN 100 can be different physical devices, or they can be the same physical device integrating core network logical functions and radio access network logical functions.

[0119] RAN 100 can be a 3GPP-related cellular system, such as a 4th generation (4G) mobile communication system, a 5G mobile communication system, or a future-oriented evolution system. RAN 100 can also be an open access network (O-RAN or ORAN), a cloud radio access network (CRAN), or a wireless fidelity (WiFi) system. RAN 100 can also be a communication system that integrates two or more of the above systems.

[0120] RAN node 110, sometimes also referred to as access network equipment, RAN entity, or access node, constitutes part of the communication system and is used to help terminals achieve wireless access. Multiple RAN nodes 110 in this communication system can be of the same type or different types. In some scenarios, the roles of RAN node 110 and terminal 120 are relative. For example, network element 120i in Figure 1 can be a helicopter or drone, which can be configured as a mobile base station. For terminals 120j accessing RAN 100 through network element 120i, network element 120i is a base station; but for base station 110a, network element 120i is a terminal. RAN node 110 and terminal 120 are sometimes both referred to as communication devices. For example, network elements 110a and 110b in Figure 1 can be understood as communication devices with base station functions, and network elements 120a-120j can be understood as communication devices with terminal functions.

[0121] In one possible scenario, the RAN node can be a base station (BS), an evolved NodeB (eNodeB), an access point (AP), a transmission reception point (TRP), a base station in a future mobile communication system, or an access node in a WiFi system. The RAN node can be a macro base station (as shown in Figure 1, 110a), a micro base station or indoor station (as shown in Figure 1, 110b), a relay node or donor node, or a radio controller in a CRAN scenario. Optionally, the RAN node can also be a server, wearable device, vehicle, or in-vehicle equipment. For example, the access network equipment in V2X technology can be a roadside unit (RSU). All or part of the functions of the RAN node in this application can also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (e.g., a cloud platform). The RAN node can also be equipped with communication modules, circuits, or chips that perform corresponding communication functions. The RAN node can also be configured with program instructions for performing corresponding communication functions and corresponding program instructions. The RAN node in this application can also be a logical node, logical module, or software that can implement all or part of the functions of the RAN node.

[0122] In another possible scenario, multiple RAN nodes collaborate to assist the terminal in achieving wireless access, with each RAN node performing a portion of the base station's functions. For example, RAN nodes can be central units (CUs), distributed units (DUs), CU-control plane (CPs), CU-user plane (UPs), or radio units (RUs), etc. CUs and DUs can be separate entities or included in the same network element, such as a baseband unit (BBU). RUs can be included in radio frequency equipment or radio frequency units, such as remote radio units (RRUs), active antenna units (AAUs), or remote radio heads (RRHs).

[0123] In different systems, CU (including open CU-CP (O-CU-CP) and open CU-UP (O-CU-UP), DU, or RU may have different names, but those skilled in the art will understand their meaning. For example, in an ORAN system, CU can also be called an open central unit (O-CU), DU can also be called an open distributed unit (O-DU), and RU can also be called an open radio unit (O-RU). For ease of description, this application uses CU, CU-CP, CU-UP, DU, and RU as examples. Any of the units among CU (or CU-CP, CU-UP), DU, and RU in this application can be implemented through software modules, hardware modules, or a combination of software and hardware modules.

[0124] Terminal 120 can be a device or module that accesses the aforementioned communication system and has corresponding communication functions. A terminal can also be called a terminal device, user equipment (UE), mobile station, mobile terminal, etc. Terminals can be widely used in various scenarios, such as device-to-device (D2D), V2X communication, MTC, IoT, virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grids, smart furniture, smart offices, smart wearables, smart transportation, smart cities, etc. Terminals can be mobile phones, tablets, computers with wireless transceiver capabilities, wearable devices, vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, transportation vehicles with wireless communication capabilities, communication modules, etc. The embodiments of this application do not limit the device form of the terminal. A communication module, circuit, or chip that performs the corresponding communication function is typically installed within the terminal. The terminal can also be configured with program instructions for performing the corresponding communication function.

[0125] RAN 100 and terminal 120 can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed in the air on aircraft, balloons, and satellites. The embodiments of this application do not limit the scenarios in which RAN 100 and terminal 120 are located.

[0126] CN 200 can be a 5G core network or an evolved 5G core network. Taking a 5G core network as an example, CN 200 includes access and mobility management (AMF) network elements responsible for mobility management and access management services; session management (SMF) network elements responsible for session management; user plane (UPF) network elements responsible for user plane packet routing and forwarding and quality of service (QoS) control; and policy control (PCF) network elements. These core network elements can operate independently or be combined to implement certain control functions; for example, AMF, SMF, and PCF can be combined into a single core network device.

[0127] It should be understood that the above naming is defined solely for the purpose of distinguishing different functions and should not constitute any limitation on this application. This application does not preclude the possibility of using other naming conventions in 5G networks and other future networks. For example, in future networks, some or all of the above-mentioned network elements may use the terminology from 5G, or they may use other names, etc.

[0128] Figure 2 is a schematic diagram of an ORAN applicable to an embodiment of this application. As shown in Figure 2(a), the O-RAN system may include a core network device (CN), a network device (RAN), and a terminal user (UE). The RAN communicates with the core network device via a backhaul link and with the UE via an air interface. For example, the BBU in the RAN communicates with the core network device via a backhaul link, and the RU in the RAN communicates with the UE via an air interface. The BBU communicates with the RU via a fronthaul link, wherein the BBU and RU may be co-located or not. The BBU includes at least one CU and at least one DU, and the CU and DU can communicate via at least one midhaul link. As shown in Figure 2(b), the O-RAN system includes a RAN intelligent controller (RIC). The RIC includes a near-real-time RIC (near-RT RIC) and a non-real-time RIC (non-RT RIC). The non-real-time RIC mainly processes non-real-time information, such as data that is not sensitive to latency, and the latency of this data can be on the order of seconds. Real-time RICs primarily process near-real-time information, such as latency-sensitive data with latency in the tens of milliseconds range. Optionally, near-real-time or non-real-time RICs can be configured as separate network elements; alternatively, they can be integrated into other devices. For example, near-real-time RICs can be located in RAN nodes (e.g., CUs or DUs), while non-real-time RICs can be located in operation administration and maintenance (OAM) systems, cloud servers, core network elements, or other network devices.

[0129] It is understood that Figure 1 or Figure 2 above are merely examples for ease of understanding and do not constitute a limitation on the scope of protection of this application. The communication system provided in the embodiments of this application may also include other devices, such as wireless relay devices and / or wireless backhaul devices, which are not shown in Figure 1 or Figure 2.

[0130] Figure 3 shows the network element function division and protocol layer structure diagram of an access network device (e.g., an O-RAN device).

[0131] Optionally, the O-RAN equipment includes a CU. The CU is a logical node that carries the RRC, Service Data Adaptation Protocol (SDAP) layer, Packet Data Convergence Protocol (PDCP) layer, and other control functions of the access network equipment. The CU can connect to network nodes such as the core network through interfaces, such as the E2 interface. The CU may have some core network functions. The CU (e.g., the PDCP layer and / or higher) connects to the DU (e.g., the Radio Link Control (RLC) layer and lower layers of the DU) through interfaces, such as the F1 interface. Optionally, the F1 interface can provide control plane (C-Plane) and user plane (U-Plane) functions (e.g., interface management, system information management, UE context management, RRC message transmission, etc.). F1AP is the application protocol of the F1 interface, defining the signaling procedures of F1 in some examples. The F1 interface supports control plane F1-C and user plane F1-U.

[0132] As an example, a CU includes CU-CP and CU-UP. CU-CP is a logical node carrying the control plane (PDCP-C) layer, which carries the RRC layer and the Packet Data Convergence Protocol layer, and is used to implement the CU's control plane functions. CU-CP can interact with network elements in the core network used to implement control plane functions. These network elements in the core network can be Access and Mobility Function (AMF) network elements, such as the AMF in a 5G system. The AMF network element is responsible for mobility management in the mobile network, such as terminal device location updates, terminal device registration networks, and terminal device handover. CU-UP is a logical node carrying the user plane (PDCP-U) layer, which carries the SDAP layer and the Packet Data Convergence Protocol layer, and is used to implement the CU's user plane functions. CU-UP can interact with network elements in the core network used to implement user plane functions. These network elements in the core network, such as the User Plane Function (UPF) in a 5G system, are responsible for data forwarding and receiving in terminal devices. The above CU and DU configurations are merely examples. In practical applications, the functions of the CU and DU can be configured as needed. For instance, the CU or DU can be configured to have more protocol layer functions, or to have only some protocol layer processing functions. For example, some RLC layer functions and protocol layer functions above the RLC layer can be placed in the CU, while the remaining RLC layer functions and protocol layer functions below the RLC layer can be placed in the DU. Furthermore, the functions of the CU or DU can be divided according to service type or other system requirements. For example, based on latency, functions that require low latency can be placed in the DU, while functions that do not require low latency can be placed in the CU.

[0133] Optionally, the O-RAN includes a DU. The DU is a logical node that carries the RLC layer, medium access control (MAC) layer, higher physical layer (Higher PHY) layer, and other functions. In some examples, the DU can control at least one RU. The DU connects to the RU through interfaces, which may be fronthaul interfaces. In some examples, the Higher PHY layer includes the PHY layer processing, such as forward error correction (FEC) encoding and decoding, scrambling, modulation, and demodulation.

[0134] Optionally, the O-RAN includes an RU. The RU is a logical node carrying lower physical layer (Lower PHY) and radio frequency (RF) processing. In some examples, the RU may be a 3GPP transmission reception point (TRP), a remote radio head (RRH), or other similar entities. In some examples, the Lower PHY includes PHY processing functions such as fast fourier transform (FFT), inverse fast fourier transform (IFFT), digital beamforming, and filtering. The RU communicates with one or more UEs via a radio link (such as an RF chain).

[0135] The DU and RU can be co-located or not. The DU and RU exchange control plane and user plane information via a fronthaul link through the lower-layer split CUS-plane (LLS-CUS-Plane) (or O-RAN CUS-Plane) interface. Here, CUS-Plane represents the control plane (C-Plane), user plane (UPlane), and synchronization plane (S-Plane) (CUS-Plane). LLS-CUS may include a lower-layer split control (LLS-C) interface providing the control plane and a lower-layer split user (LLS-U) interface providing the user plane. Additionally, LLS-CUS may include a lower-layer split synchronization (LLS-S) interface providing the synchronization plane. In some examples, the control plane (or control plane plane) refers to the real-time control between the DU and RU. The DU and RU exchange management plane information via the lower-layer split management (LLS-M) interface of the fronthaul link. The management plane (M-Plane) refers to the non-real-time management operations between the DU and RU.

[0136] DU and RU can cooperate to implement the functions of the PHY layer. A DU can be connected to one or more RUs. The functions of DU and RU can be configured in various ways depending on the design. For example, a DU can be configured to implement baseband functions, and an RU can be configured to implement mid-RF functions. Another example is that a DU can be configured to implement higher-level functions in the PHY layer, and an RU can be configured to implement lower-level functions in the PHY layer, or to implement both lower-level and RF functions. Higher-level functions in the physical layer can include a portion of the physical layer's functions that are closer to the MAC layer, while lower-level functions in the physical layer can include another portion of the physical layer's functions that are closer to the mid-RF side.

[0137] To facilitate understanding of the embodiments of this application, the basic concepts involved in this application will be explained first.

[0138] 1. Time-domain unit and frequency-domain unit: Data or information can be carried through time-frequency resources.

[0139] In the time domain, time-domain resources can include one or more time-domain units (or time units). A time-domain unit can be a radio frame (RF), a subframe, a slot, a mini-slot, a partial slot, an orthogonal frequency division multiplexing (OFDM) symbol, or a collection of time-domain resources. One or more time units can be continuous or discrete in the time domain.

[0140] In the frequency domain, frequency domain resources can include one or more frequency domain units. A frequency domain unit can be a resource element (RE), an RB, a resource block set (RB set), a subchannel, a resource pool, bandwidth, a bandwidth part (BWP), a carrier, a channel, or interlaced RBs, etc.

[0141] 2. Time Division Duplex (TDD): In a TDD system, time-domain resources are divided into uplink and downlink. For example, one possible uplink / downlink configuration in a TDD system is DDDSU, where D represents a downlink (DL) time slot, where each symbol in the downlink time slot is a downlink symbol; U represents an uplink (UL) time slot, where each symbol in the uplink time slot is an uplink symbol; and S represents a special time slot, which includes at least flexible symbols.

[0142] In widely used TDD systems, the downlink typically occupies most of the time resources, resulting in poor uplink coverage and high latency, which cannot meet the needs of emerging services such as virtual reality (VR) and augmented reality (AR).

[0143] Figure 4 illustrates the time-frequency allocation of a traditional TDD scheme. As shown in Figure 4, the horizontal direction represents the time domain, and the vertical direction represents the frequency domain. It includes a set of time-frequency resources for downlink (e.g., downlink data or downlink control information) transmission and a set of time-frequency resources for uplink (e.g., uplink data or uplink control information) transmission. The time domain range occupied by the time-frequency resources used for downlink transmission is called the downlink time slot (DL slot), and the time domain range occupied by the time-frequency resources used for uplink transmission is called the uplink time slot (UL slot). It is evident that the number of DL time slots significantly exceeds the number of UL time slots, which will cause an imbalance between DL and UL coverage.

[0144] To dynamically adapt to changes in uplink and downlink data volumes within a cell, thereby improving cell throughput and reducing transmission latency, wireless communication systems employ various duplexing technologies. These include, but are not limited to, dynamic TDD, subband full-duplex (SBFD), or simultaneous on-frequency full-duplex. The following examples, illustrated with Figures 5 to 8, illustrate these duplexing technologies.

[0145] Figure 5 illustrates the time-frequency allocation of a dynamic TDD scheme. Dynamic TDD means that a cell can dynamically configure its TDD frame structure. As shown in Figure 5(a), if cell A currently has a high volume of downlink traffic, its TDD frame structure is configured to have a higher proportion of downlink time slots. As shown in Figure 5(b), if cell B currently has a high volume of uplink traffic, its TDD frame structure is configured to have a higher proportion of uplink time slots. Because the TDD frame structures of cells A and B are inconsistent, when cell A is transmitting downlink data while cell B is receiving uplink data, the downlink transmission of cell A will interfere with the uplink reception of cell B. Since this interference is caused by downlink transmission affecting uplink transmission, it is also called cross-link interference (CLI). Furthermore, if cells A and B are located at two different base stations, this interference is also called base station-to-base station link interference (gNB-to-gNB CLI).

[0146] 3. SBFD: In the SBFD scheme, a carrier (e.g., a component carrier, CC) is divided into multiple overlapping or non-overlapping subbands. Different subbands can have different transmission directions, meaning they are used for transmission in different link directions. For example, a carrier may include a non-overlapping first and second subbands, with different transmission directions. It's important to note that the first and second subbands refer to two types of subbands with different transmission directions, not that a carrier contains only two subbands. For instance, a carrier may include subband #1 and subband #2, where subband #1 and subband #2 have different transmission directions. Alternatively, a carrier may include subband #1, subband #2, and subband #3, where subband #1 and subband #3 have the same transmission direction, and subband #1 and subband #2 have different transmission directions.

[0147] In this application, SBFD includes subband overlapping full duplex and subband non-overlapping full duplex.

[0148] 4. SBFD Time Unit: This includes uplink frequency domain resources and downlink frequency domain resources. The uplink frequency domain resources are used for uplink transmission, and the downlink frequency domain resources are used for downlink transmission. It can be understood that the SBFD time unit includes subbands for uplink and downlink transmission, and the base station can use these subbands to perform SBFD operations. In this embodiment, when the time unit is a symbol, the SBFD time unit is an SBFD symbol. When the time unit is a time slot, subframe, half-frame, frame, mini-subframe, mini-time slot, or transmission occasion (TO), the SBFD time unit can refer to a time unit containing an SBFD symbol.

[0149] It should be noted that the frequency domain resources on the SBFD time unit of this application may include downlink (DL) subbands and uplink (UL) subbands. To avoid cross-link interference between downlink transmissions on the DL subband and uplink transmissions on the UL subband, a guard band may be defined between the DL subband and the UL subband. This application does not limit whether a guard band exists between the DL subband and the UL subband, or whether transmission can be performed on the guard band if it exists. Furthermore, this application does not limit whether the DL subband and the UL subband can overlap (e.g., they may not overlap at all, or they may partially overlap, or they may completely overlap).

[0150] For example, regarding the configuration of SBFD, depending on whether a time slot contains both SBFD symbols and non-SBFD symbols, there are two possible configuration methods:

[0151] 1) SBFD configuration is at the time slot level, meaning that the symbols contained in a time slot are either all configured as SBFD symbols or all configured as non-SBFD symbols.

[0152] 2) SBFD configuration is symbol-level, meaning that some of the symbols contained in a time slot can be configured as SBFD symbols, while others can be configured as non-SBFD symbols.

[0153] In this context, the SBFD symbol can be considered as a symbol configured with SBFD, and the non-SBFD symbol can be considered as a symbol without SBFD. This application does not impose any limitations on the configuration of SBFD.

[0154] 5. Subband: A portion of a frequency band within a carrier, i.e., one or more consecutive PRBs in the frequency domain. In this application, the subband used for uplink transmission is called the uplink subband, and the subband used for downlink transmission is called the downlink subband. A subband can also be understood as a frequency domain resource. Currently, base stations support FD (e.g., SBFD and SFFD mentioned above), meaning that in a single time slot, transmission can occur simultaneously on the uplink subband and reception on the downlink subband. Terminal equipment only supports half-duplex (HF) SBFD, meaning that in a single time slot, transmission can only occur on the uplink subband, or reception can only occur on the downlink subband.

[0155] Figure 6 illustrates the time-frequency division of the SBFD scheme. As shown in Figure 6, the horizontal direction represents the time domain, the vertical direction represents the frequency domain, DL represents downlink resources used for downlink data or control information transmission, UL represents uplink resources used for uplink data or control information transmission, and X represents SBFD resources used for both uplink and downlink data or control information transmission. As shown in Figure 6(a), assuming the frequency domain includes one carrier, this carrier is divided into three sub-bands: the middle sub-band is the uplink sub-band, and the upper and lower sub-bands are the downlink sub-bands. As shown in Figure 6(b), assuming the frequency domain includes one carrier, this carrier is divided into two sub-bands: the upper sub-band is the uplink sub-band, and the lower sub-band is the downlink sub-band.

[0156] Understandably, a time period that includes only downlink resources is called a downlink time slot or downlink symbol; a time period that includes only uplink resources is called an uplink time slot or uplink symbol; and a time period that includes both downlink and uplink resources is called an SBFD time slot or SBFD symbol. On SBFD symbols, the base station can achieve simultaneous transmission and reception through different frequency domain resources (subbands). Other symbols / time slots remain downlink symbols / time slots, uplink symbols / time slots, or flexible symbols / time slots. As shown in Figure 6, the symbols in the second, third, and fourth time slots are all configured as SBFD type symbols, the symbol in the first time slot remains a downlink symbol, and the symbol in the fifth time slot remains an uplink symbol.

[0157] Figure 7 illustrates the time-frequency allocation of the inter-cell asynchronous SBFD scheme. As shown in Figure 7, in SBFD, if the subband configurations of two adjacent cells are different, for example, the downlink subband of cell A and the uplink subband of cell B overlap (e.g., the dashed box), then when cell A performs downlink transmission on the overlapping frequency domain resources and cell B performs uplink transmission on the overlapping frequency domain resources, the downlink transmission on cell A will interfere with the uplink reception on cell B. Therefore, cell A will also cause CLI to cell B. Furthermore, if cell A and cell B are located at two different base stations, the interference is also referred to as gNB-to-gNB CLI.

[0158] Figure 8 illustrates the time-frequency allocation in a simultaneous, same-frequency, full-duplex (CLI) scheme. A simultaneous, same-frequency, full-duplex scheme means that cells perform downlink transmission and uplink reception on the same time-frequency resources. As shown in Figure 8, a cell's downlink transmission can cause cross-link interference (CLI) to its own uplink reception. Because it is its own transmission interfering with its own reception, this type of CLI is also called cell self-interference (SI). Similarly, a cell's downlink transmission can also cause CLI to the uplink reception of another adjacent cell. If the two cells belong to different base stations, these CLIs are gNB-to-gNB CLIs.

[0159] The above descriptions of terms or technologies are merely illustrative examples to facilitate understanding of the technical solutions, and do not exclude other solutions.

[0160] 5G NR wireless communication systems are deployed in mid-to-high frequency bands, achieving high data rates and low latency through the use of large bandwidth. Based on the various duplexing technologies mentioned above, uplink throughput and transmission latency can be improved. However, CLI (Clear Link Injection) in these duplexing technologies impacts the uplink reception performance of the base station, leading to a decrease in uplink throughput. One possible implementation is to suppress CLI by reducing the downlink transmit power of the base station. For example, when reducing transmit power, the base station can reduce the transmit power of the entire carrier, or in other words, reduce the transmit power on all frequency domain resources corresponding to the carrier. However, if the base station is not transmitting uplink on certain frequency domain resources, reducing transmit power on those resources will result in unnecessary power waste, leading to excessive performance loss in the downlink channel / downlink signal. Therefore, how to reduce the downlink transmit power of the base station to reduce CLI while minimizing the impact on downlink channel / downlink signal transmission is a problem that needs to be considered.

[0161] In view of this, this application provides a communication method and apparatus that can reduce CLI while minimizing the loss of downlink channel / downlink signal transmission performance and ensuring system transmission performance.

[0162] The communication method and communication device provided in this application will be further described below with reference to the accompanying drawings. It is understood that this application uses access network equipment and terminal equipment as examples to illustrate the execution of this interaction, but this application does not limit the execution subject of the interaction. For example, the method executed by the access network equipment in this application can also be implemented by modules (e.g., circuits, chips, or chip systems) in the access network equipment, or by logical nodes, logical modules, or software capable of implementing all or part of the network functions. The method executed by the terminal equipment in this application can also be implemented by a communication module in the terminal equipment or by circuits or chips (such as modem chips (also known as baseband chips), or SoC chips containing modem cores, or SIP chips) in the terminal equipment responsible for communication functions.

[0163] Figure 9 is a schematic flowchart of a communication method 900 provided in this application. In this method, the access network device reduces the transmission power of the first downlink channel or the first downlink signal on some frequency domain resources to suppress CLI while reducing the loss of downlink transmission performance. As shown in Figure 9, the method includes the following steps.

[0164] S910, the access network equipment sends the first scheduling information to the terminal equipment;

[0165] Correspondingly, the terminal device receives the first scheduling information from the access network device.

[0166] S920: The access network equipment sends a first downlink channel or a first downlink signal to the terminal equipment according to the first scheduling information;

[0167] Correspondingly, the terminal device receives the first downlink channel or the first downlink signal from the access network device according to the first scheduling information.

[0168] For example, the first scheduling information is used to schedule a first downlink channel or a first downlink signal. The frequency domain resources of the first downlink channel or the first downlink signal include first frequency domain resources and second frequency domain resources. The transmit power of the first downlink channel or the first downlink signal on the first frequency domain resources is the first transmit power, and the transmit power of the first downlink channel or the first downlink signal on the second frequency domain resources is the second transmit power. The first transmit power is less than the second transmit power.

[0169] It should be noted that the technical solution of this application is applicable to a variety of duplex scenarios, such as dynamic TDD, sub-band full-duplex SBFD, or simultaneous frequency full-duplex, or other duplex scenarios, and is not limited to any of them.

[0170] It is understood that CLI in this application can be caused by the local cell or by neighboring cells, and there is no limitation on this. Therefore, in the scheme of this application, the access network equipment reduces the transmit power of the first downlink channel or the first downlink signal on some frequency domain resources, which can suppress CLI caused by the local cell or CLI caused by the local cell to neighboring cells, and there is no limitation on this.

[0171] For example, the first downlink channel may be a downlink data channel, such as PDSCH, or a downlink control channel, such as PDCCH, and the first downlink signal may be a downlink reference signal, such as CSI-RS or SSB, without limitation.

[0172] For example, the statement that the first transmit power is less than the second transmit power can be replaced by describing it as: the first transmit power is different from the second transmit power, or firstly, the second transmit power is greater than the first transmit power. It is understood that the first transmit power being less than the second transmit power can be seen as the access network device reducing the transmit power of the first downlink channel or the first downlink signal to obtain the first transmit power and the second transmit power. For example, if the transmit power of the first downlink channel or the first downlink signal transmitted on the first frequency domain resource decreases, but the transmit power of the first downlink channel or the first downlink signal transmitted on the first frequency domain resource does not decrease, then the first transmit power is less than the second transmit power; as another example, if the transmit power of the first downlink channel or the first downlink signal transmitted on the first frequency domain resource decreases by a first value, and the transmit power of the first downlink channel or the first downlink signal transmitted on the first frequency domain resource decreases by a second value, and the first value is greater than the second value, then the first transmit power is less than the second transmit power. No specific limitation is made in this regard.

[0173] For ease of understanding and description, the following embodiments use the example of a first frequency domain resource being a frequency domain resource with reduced power and a second frequency domain resource being a frequency domain resource without reduced power. That is, the access network reduces the transmit power on the first frequency domain resource (i.e., the first transmit power), while the access network device does not reduce the transmit power on the second frequency domain resource (i.e., the second transmit power).

[0174] The following describes a specific implementation method for reducing the transmit power of the first downlink channel (e.g., downlink data channel or downlink control channel) and / or the first downlink signal (e.g., downlink reference signal) of the access network equipment.

[0175] Case 1: The first downlink channel is a downlink data channel (e.g., PDSCH).

[0176] For a PDSCH transmission, the access network device can reduce the transmit power on some or all of the RBs occupied by the PDSCH transmission. For example, the access network device can determine different power reduction schemes based on the precoding scheme of the PDSCH transmission. It should be noted that the main function of precoding is to map the data stream to be transmitted onto one or more antenna ports, thereby combating channel fading during transmission. For example, the granularity of precoding can be subband or wideband. Subband precoding means that the precoding used on different subbands occupied by the PDSCH transmission can be different; for example, the granularity of subband precoding used in the PDSCH transmission can be two consecutive PRBs or four PRBs, without limitation. Wideband precoding means that the precoding used on all RBs occupied by the PDSCH transmission is the same.

[0177] Method 1: The precoding granularity of the first downlink channel is sub-band.

[0178] In the first implementation, the access network equipment reduces the transmit power of the first downlink channel at the PRG granularity.

[0179] For example, the first frequency domain resource includes one or more first PRGs, the second frequency domain resource includes one or more second PRGs, and the transmit power on all RBs contained in any of the one or more first PRGs is the same, and the transmit power on all RBs contained in any of the one or more second PRGs is the same.

[0180] In other words, the transmit power of all RBs within any first PRG is the same, and the transmit power of all RBs within any second PRG is the same. This means that the transmit power of the first downlink channel or first downlink signal on all RBs within the same PRG remains the same, while the transmit power of the first downlink channel or first downlink signal can differ between different PRGs. Based on this, maintaining the same transmit power for PDSCH transmission within a PRG is beneficial for the terminal equipment to perform joint channel estimation on the data within a PRG when receiving the PDSCH, ensuring that the channel estimation performance within a PRG does not degrade or minimizes channel estimation performance loss, thereby guaranteeing the performance of PDSCH transmission.

[0181] Understandably, the transmit power of one or more first PRGs contained in the first frequency domain resource is the first transmit power, and the transmit power of one or more second PRGs contained in the second frequency domain resource is the second transmit power.

[0182] It should be noted that, for the case where the first frequency domain resource includes multiple first PRGs, the transmit power of the first downlink channel or the first downlink signal on all RBs within the multiple first PRGs remains the same; for the case where the second frequency domain resource includes multiple second PRGs, the transmit power of the first downlink channel or the first downlink signal on all RBs within the multiple second PRGs remains the same.

[0183] Optionally, the frequency domain resources of the first downlink channel or the first downlink signal may further include third frequency domain resources. The third frequency domain resources include one or more third PRGs. The transmit power on the multiple RBs included in the third PRG may be the same as or different from the transmit power on the multiple RBs included in the first PRG or the second PRG. That is, the transmit power of downlink transmission on different PRGs may be different, and there is no limitation on this.

[0184] For example, suppose a first frequency domain resource includes a first PRG and a second frequency domain resource includes a second PRG, wherein the first PRG includes 4 RBs and the second PRG includes 5 RBs. Then the transmit power of the first PRG is the first transmit power, and the transmit power of the 4 RBs in the first PRG is the first transmit power. The transmit power of the second PRG is the second transmit power, and the transmit power of the 5 RBs in the second PRG is the second transmit power. Alternatively, suppose the first frequency domain resource includes two first PRGs (e.g., PRG#0 and PRG#1), and the second frequency domain resource includes three second PRGs (e.g., PRG#2, PRG#3, and PRG#4), wherein PRG#0 includes 4 RBs, PRG#1 includes 3 RBs, PRG#2 includes 4 RBs, PRG#3 includes 3 RBs, and PRG#4 includes 3 RBs. Then, the transmit power of PRG#0 and PRG#1 is the first transmit power, the transmit power of the 4 RBs in PRG#0 and the 3 RBs in PRG#1 is the first transmit power, the transmit power of PRG#2, PRG#3, and PRG#4 is the second transmit power, and the transmit power of the 4 RBs in PRG#2, the 3 RBs in PRG#3, and the 3 RBs in PRG#4 is the second transmit power.

[0185] The above is merely an example to facilitate understanding of the technical solution; other possible solutions are not excluded.

[0186] In the second implementation, the access network equipment reduces the transmit power of the first downlink channel at the RB granularity.

[0187] For example, the first frequency domain resource includes a first RB, the second frequency domain resource includes a second RB, and the first RB and the second RB belong to the same PRG.

[0188] Understandably, the first RB has the first transmission power, and the second RB has the second transmission power.

[0189] Optionally, this application does not limit the number of first RBs included in the first frequency domain resource, and there may be one or more; this application does not limit the number of second RBs included in the second frequency domain resource, and there may be one or more.

[0190] In other words, this implementation allows the PDSCH transmission portion on some RBs within a PRG to reduce its transmit power, while the PDSCH transmission portion on other RBs does not reduce its transmit power. Or, the power reduction value of PDSCH transmission on different RBs of a PRG is different, meaning that the transmit power of PDSCH transmission on different RBs of a PRG can be different.

[0191] Furthermore, the access network device can indicate power information (e.g., a first transmit power or a second transmit power) and its corresponding frequency domain resources (e.g., a first frequency domain resource or a second frequency domain resource) to the terminal device through semi-static signaling configuration or dynamic indication. The specific implementation method is described below and will not be elaborated here. In this implementation method, although the transmit power of PDSCH transmission on a PRG is different, the access network device can indicate the power information and its corresponding frequency domain resources to the terminal device. This is beneficial for the terminal device to correct the channel estimation result based on the power information when performing joint channel estimation on the data within a PRG when receiving the PDSCH, ensuring that the channel estimation performance within a PRG does not degrade or reduces the channel estimation performance loss, thereby ensuring the performance of PDSCH transmission.

[0192] Method 2: The precoding granularity of the first downlink channel is wideband.

[0193] In the first implementation, the access network device does not schedule PDSCH transmission across degraded frequency domain resources (e.g., the first frequency domain resource) and non-degraded frequency domain resources (e.g., the second frequency domain resource).

[0194] For example, the access network device sends a first downlink channel to the terminal device within a frequency domain resource range of either the first or second frequency domain resource; correspondingly, the terminal device receives the first downlink channel from the access network device within a frequency domain resource range of either the first or second frequency domain resource.

[0195] In other words, the access network equipment schedules the PDSCH transmission entirely within the frequency resource range of reduced power or the frequency resource range of non-reduced power.

[0196] In the second implementation, the access network device schedules PDSCH transmission across reduced-power frequency domain resources (e.g., the first frequency domain resource) and non-reduced-power frequency domain resources (e.g., the second frequency domain resource).

[0197] The first downlink channel corresponds to the first precoding when transmitted on the first frequency domain resource, and corresponds to the second precoding when transmitted on the second frequency domain resource. The first precoding and the second precoding are different.

[0198] For example, the access network device sends a first downlink channel to the terminal device on the first frequency domain resources and the second frequency domain resources; correspondingly, the terminal device receives the first downlink channel from the access network device on the first frequency domain resources and the second frequency domain resources.

[0199] It should be noted that the difference between the first and second precoding is from the perspective of the terminal device. In other words, the terminal device assumes that the PDSCH transmission uses the same precoding in the reduced-power frequency domain resources (e.g., the first frequency domain resources) and the same precoding in the non-reduced-power frequency domain resources (e.g., the second frequency domain resources), but does not assume that the PDSCH transmission uses the same precoding in the first and second frequency domain resources. Under this implementation, the terminal device does not need to perform joint channel estimation for the first downlink channel transmission in the first and second frequency domain resources.

[0200] Optionally, this application allows access network equipment to transmit a first downlink channel on both the first and second frequency domain resources using either the same or different precoding methods, without limitation.

[0201] In the third implementation, the access network device schedules PDSCH transmission across reduced-power frequency domain resources (e.g., the first frequency domain resource) and non-reduced-power frequency domain resources (e.g., the second frequency domain resource).

[0202] The first downlink channel corresponds to the third precoding when it is transmitted on the first frequency domain resources and the second frequency domain resources.

[0203] For example, the access network device sends a first downlink channel to the terminal device on the first frequency domain resources and the second frequency domain resources; correspondingly, the terminal device receives the first downlink channel from the access network device on the first frequency domain resources and the second frequency domain resources.

[0204] Furthermore, the access network device can indicate power information (e.g., the first transmit power or the second transmit power) and its corresponding frequency domain resources (e.g., the first frequency domain resources or the second frequency domain resources) to the terminal device through semi-static signaling configuration or dynamic indication. The specific implementation method is described below and will not be explained here.

[0205] It should be noted that the precoding used for the transmission of the first downlink channel on the first frequency domain resources and the second frequency domain resources is the same. This is from the perspective of the terminal device. In this implementation, after receiving the first downlink channel, when the terminal device performs joint channel estimation on the first downlink channel on the first frequency domain resources and the second frequency domain resources, it can correct the channel estimation result based on the received power information to ensure that the downlink channel estimation performance does not degrade or reduces the channel estimation performance loss, thereby ensuring the performance of downlink data channel transmission.

[0206] Optionally, this application allows access network equipment to transmit a first downlink channel on both the first and second frequency domain resources using either the same or different precoding methods, without limitation.

[0207] In one example, the access network device can carry reference signals such as a demodulation reference signal (DMRS) or a phase-tracking reference signal (PT-RS) when transmitting PDSCH. DMRS is used for demodulating the PDSCH data, and PT-RS is used for phase tracking and correction of the PDSCH data. For the second or third implementation, the access network device can simultaneously reduce the transmit power of both PDSCH data and DMRS / PT-RS, or it can reduce only the transmit power of PDSCH data without reducing the transmit power of DMRS and PT-RS, or the transmit power of PDSCH data can be reduced by different values ​​than the transmit power of DMRS and PT-RS. For example, the transmit power of DMRS or PT-RS can be reduced by a smaller value than the transmit power of PDSCH data; this is not limited.

[0208] Scenario 2: The first downlink channel is the downlink control channel (e.g., PDCCH).

[0209] For a PDCCH transmission, the access network device can reduce the transmit power on some or all of the REGs occupied by the PDCCH transmission. Furthermore, the scheme for reducing transmit power for PDCCH transmissions is similar to the scheme for reducing transmit power for PDSCH transmissions in Case 1 above. The difference lies in the specific transmission mechanisms, such as the time-frequency resources occupied by PDCCH transmissions and the precoding scheme, which differ from those of PDSCH transmissions and require corresponding enhancements.

[0210] For example, PDCCH transmission occurs within a control resource set (CORESET). A CORESET occupies [a certain number of] frequency domains. Each resource block occupies a contiguous space in the time domain. A PDCCH transmission uses resources that can be aggregated from one or more control channel elements (CCEs), referred to as the aggregation level (AL). A CCE consists of 6 REGs, each occupying one symbol in the time domain and one RB in the frequency domain. PDCCH precoding granularity is divided into subband and wideband. If a PDCCH transmission uses subband precoding, the precoding granularity is a REG bundle. A REG bundle contains multiple consecutive REGs (e.g., 2, 3, or 6). That is, the PDCCH transmission uses the same precoding on the occupied REG bundle, and different precoding can be used on different REG bundles. If a PDCCH transmission uses wideband precoding, the PDCCH transmission uses the same precoding on all occupied REGs.

[0211] Method 1: The precoding granularity of the first downlink channel is sub-band.

[0212] In the first implementation, the access network device reduces the transmit power of the first downlink channel at the granularity of REG bundles.

[0213] For example, the first frequency domain resource includes one or more first REG bundles, and the second frequency domain resource includes one or more second REG bundles. The transmit power on all REGs contained in any of the one or more first REG bundles is the same, and the transmit power on all REGs contained in any of the one or more second REG bundles is the same. Based on this, the transmit power of PDCCH transmission on a single REG bundle remains the same. This is beneficial for the terminal device to perform joint channel estimation on the data within a REG bundle when receiving the PDCCH, ensuring that the channel estimation performance within a REG bundle does not degrade or reduces channel estimation performance loss, thereby guaranteeing the performance of PDCCH transmission.

[0214] In other words, the transmit power of multiple REGs contained in any first REG bundle is the same, and the transmit power of multiple REGs contained in any second REG bundle is the same. That is to say, the transmit power of the first downlink channel or the first downlink signal on all REGs within the same REG bundle remains the same, while the transmit power of the first downlink channel or the first downlink signal in different REG bundles may be the same or different.

[0215] Understandably, the transmit power of one or more first REG bundles contained in the first frequency domain resource is the first transmit power, and the transmit power of one or more second REG bundles contained in the second frequency domain resource is the second transmit power.

[0216] It should be noted that, for the case where the first frequency domain resources include multiple first REG bundles, the transmit power of the first downlink channel or the first downlink signal on all REGs within the multiple first REG bundles remains the same; for the case where the second frequency domain resources include multiple second REG bundles, the transmit power of the first downlink channel or the first downlink signal on all REGs within the multiple second REG bundles remains the same.

[0217] Optionally, the frequency domain resources of the first downlink channel or the first downlink signal may further include third frequency domain resources. The third frequency domain resources include one or more third REG bundles. The transmit power of the multiple REGs contained in the third REG bundle may be the same as or different from the transmit power of the multiple REGs contained in the first REG bundle or the second REG bundle. That is, the transmit power of downlink transmission on different REG bundles may be different, and there is no limitation on this.

[0218] For example, suppose a first frequency domain resource includes a first REG bundle and a second frequency domain resource includes a second REG bundle, wherein the first REG bundle includes 4 REGs and the second REG bundle includes 5 REGs. Then the transmit power of the first REG bundle is the first transmit power, the transmit power of the 4 REGs in the first REG bundle is the first transmit power, the transmit power of the second REG bundle is the second transmit power, and the transmit power of the 5 REGs in the second REG bundle is the second transmit power. Alternatively, suppose the first frequency domain resource includes two first REG bundles (e.g., REG bundle #0 and REG bundle #1), and the second frequency domain resource includes three second REG bundles (e.g., REG bundle #2, REG bundle #3, and REG bundle #4), wherein REG bundle #0 includes 4 REGs, REG bundle #1 includes 3 REGs, REG bundle #2 includes 4 REGs, REG bundle #3 includes 3 REGs, and REG bundle #4 includes 3 REGs. Then, the transmit power of REG bundle #0 and REG bundle #1 is the first transmit power, the transmit power of the 4 REGs in REG bundle #0 and the 3 REGs in REG bundle #1 is the first transmit power, the transmit power of REG bundle #2, REG bundle #3, and REG bundle #4 is the second transmit power, and the transmit power of the 4 REGs in REG bundle #2, the 3 REGs in REG bundle #3, and the 3 REGs in REG bundle #4 is the second transmit power.

[0219] The above is merely an example to facilitate understanding of the technical solution; other possible solutions are not excluded.

[0220] In the second implementation, the access network equipment reduces the transmit power of the first downlink channel at the REG granularity.

[0221] For example, the first frequency domain resource includes a first REG, the second frequency domain resource includes a second REG, and the first REG and the second REG belong to the same REG bundle.

[0222] Understandably, the transmission power of the first REG is the first transmission power, and the transmission power of the second REG is the second transmission power.

[0223] Optionally, this application does not limit the number of first REGs included in the first frequency domain resource, which may be one or more; this application does not limit the number of second REGs included in the second frequency domain resource, which may be one or more.

[0224] Furthermore, the access network device can indicate power information (e.g., a first transmit power or a second transmit power) and its corresponding frequency domain resources (e.g., a first frequency domain resource or a second frequency domain resource) to the terminal device through semi-static signaling configuration or dynamic indication. The specific implementation method is described below and will not be elaborated here. In this implementation method, although the transmit power of PDCCH transmission on a PRG bundle is different, the access network device can indicate the power information and its corresponding frequency domain resources to the terminal device. This is beneficial for the terminal device to correct the channel estimation result based on the power information when performing joint channel estimation on the data within a PRG bundle when receiving the PDCCH, ensuring that the channel estimation performance within a PRG bundle does not degrade or reduces the channel estimation performance loss, thereby ensuring the performance of PDCCH transmission.

[0225] Method 2: The precoding granularity of the first downlink channel is wideband.

[0226] In the first implementation, the access network device does not schedule PDCCH transmission across degraded frequency domain resources (e.g., the first frequency domain resource) and non-degraded frequency domain resources (e.g., the second frequency domain resource).

[0227] For example, the access network device sends a first downlink channel to the terminal device within a frequency domain resource range of either the first or second frequency domain resource; correspondingly, the terminal device receives the first downlink channel from the access network device within a frequency domain resource range of either the first or second frequency domain resource.

[0228] In other words, the access network equipment schedules the PDCCH transmission entirely within the frequency resource range of reduced power or the frequency resource range of non-reduced power.

[0229] In the second implementation, the access network device schedules PDCCH transmission across reduced-power frequency domain resources (e.g., the first frequency domain resource) and non-reduced-power frequency domain resources (e.g., the second frequency domain resource).

[0230] The first downlink channel corresponds to the first precoding when transmitted on the first frequency domain resource, and corresponds to the second precoding when transmitted on the second frequency domain resource. The first precoding and the second precoding are different.

[0231] For example, the access network device sends a first downlink channel to the terminal device on the first frequency domain resources and the second frequency domain resources; correspondingly, the terminal device receives the first downlink channel from the access network device on the first frequency domain resources and the second frequency domain resources.

[0232] It should be noted that the difference between the first and second precoding is from the perspective of the terminal device. In other words, the terminal device assumes that the PDCCH transmission uses the same precoding in the reduced-power frequency domain resources (e.g., the first frequency domain resources) and the same precoding in the non-reduced-power frequency domain resources (e.g., the second frequency domain resources), but does not assume that the PDCCH transmission uses the same precoding in the first and second frequency domain resources. Under this implementation, the terminal device does not need to perform joint channel estimation for the first downlink channel transmission in the first and second frequency domain resources.

[0233] Optionally, this application allows access network equipment to transmit a first downlink channel on both the first and second frequency domain resources using either the same or different precoding methods, without limitation.

[0234] In the third implementation, the access network device schedules PDCCH transmission across reduced-power frequency domain resources (e.g., the first frequency domain resource) and non-reduced-power frequency domain resources (e.g., the second frequency domain resource).

[0235] The first downlink channel corresponds to the third precoding when it is transmitted on the first frequency domain resources and the second frequency domain resources.

[0236] For example, the access network device sends a first downlink channel to the terminal device on the first frequency domain resources and the second frequency domain resources; correspondingly, the terminal device receives the first downlink channel from the access network device on the first frequency domain resources and the second frequency domain resources.

[0237] Furthermore, the access network device can indicate power information (e.g., the first transmit power or the second transmit power) and its corresponding frequency domain resources (e.g., the first frequency domain resources or the second frequency domain resources) to the terminal device through semi-static signaling configuration or dynamic indication. The specific implementation method is described below and will not be explained here.

[0238] It should be noted that the precoding used for the transmission of the first downlink channel on the first frequency domain resources and the second frequency domain resources is the same. This is from the perspective of the terminal device. In this implementation, after receiving the first downlink channel, when the terminal device performs joint channel estimation on the first downlink channel on the first frequency domain resources and the second frequency domain resources, it can correct the channel estimation result based on the received power information to ensure that the downlink channel estimation performance does not degrade or reduces the channel estimation performance loss, thereby ensuring the performance of downlink data channel transmission.

[0239] Optionally, this application allows access network equipment to transmit a first downlink channel on both the first and second frequency domain resources using either the same or different precoding methods, without limitation.

[0240] In one example, the access network device can carry a demodulation reference signal such as DMRS or PT-RS when transmitting PDCCH. DMRS is used for demodulating the PDCCH data, and PT-RS is used for phase tracking and correction of the PDCCH data. For this second or third implementation, the access network device can simultaneously reduce the transmit power of both PDCCH data and DMRS / PT-RS, or it can reduce only the transmit power of PDCCH data without reducing the transmit power of DMRS and PT-RS, or the transmit power of PDCCH data can be reduced by different values ​​than the transmit power of DMRS and PT-RS. For example, the transmit power of DMRS or PT-RS can be reduced by a smaller value than the transmit power of PDCCH data; this is not limited.

[0241] Scenario 3: The first downlink signal is a downlink reference signal (e.g., CSI-RS or SSB).

[0242] Understandably, reference signals such as CSI-RS or SSB can be used for Channel State Information (CSI) measurement and reporting, Radio Resource Management (RRM) measurement and reporting, radio link monitoring, beam management, or uplink power control. Access network equipment can configure one or more CSI-RS resources, or one or more SSB resources, for terminal equipment. For example, for CSI-RS resources, each CSI-RS resource can contain one or more antenna ports. Different CSI-RS resources can be time-division multiplexed or frequency-division multiplexed, and different antenna ports of a single CSI-RS resource can be time-division multiplexed, frequency-division multiplexed, or code-division multiplexed.

[0243] In the first implementation, when configuring a CSI-RS resource or SSB resource, the access network device does not cross frequency domain resources with reduced power (e.g., the first frequency domain resource) and non-reduced power frequency domain resources (e.g., the second frequency domain resource).

[0244] For example, the access network device sends a first downlink signal to the terminal device within a frequency domain resource range of either the first or second frequency domain resource; correspondingly, the terminal device receives the first downlink signal from the access network device within a frequency domain resource range of either the first or second frequency domain resource.

[0245] In other words, when configuring a CSI-RS resource or SSB resource, the access network device can configure it without crossing the range of frequency domain resources with reduced power or without reduced power. Specifically, the access network device can configure the CSI-RS resource or SSB resource entirely within the range of frequency domain resources with reduced power or without reduced power. This means the access network device can schedule the first downlink signal on either the first or second frequency domain resource.

[0246] For example, suppose the access network device configures X CSI-RS resources for the terminal device, where Y CSI-RS resources can be located within the frequency resource range of reduced power, and Z CSI-RS resources can be located within the frequency resource range of non-reduced power. X, Y, and Z are all positive integers, and Y + Z <= X. For example, if X = 4, Y = 1, and Z = 3, then it means that among the 4 CSI-RS resources configured by the access network device for the terminal device, 1 CSI-RS resource is located within the frequency resource range of reduced power (e.g., the first frequency domain resource), and 3 CSI-RS resources can be located within the frequency resource range of non-reduced power (e.g., the second frequency domain resource), without any restrictions.

[0247] In the second implementation, when configuring a CSI-RS resource or SSB resource, the access network device crosses the frequency domain resources with reduced power (e.g., the first frequency domain resource) and the frequency domain resources without reduced power (e.g., the second frequency domain resource).

[0248] In other words, when configuring a CSI-RS resource or SSB resource, the access network device can configure the CSI-RS resource or SSB resource within both the power-reduced and power-unreduced frequency domain resource ranges. Alternatively, part of the frequency domain resource of the CSI-RS resource or SSB resource may be located within the power-reduced range, while another part may be located within the power-unreduced range. This means the access network device can schedule the first downlink signal on both the first and second frequency domain resources.

[0249] For example, the access network device sends a first downlink signal to the terminal device on the first frequency domain resources and the second frequency domain resources; correspondingly, the terminal device receives the first downlink signal from the access network device on the first frequency domain resources and the second frequency domain resources.

[0250] Optionally, if the CSI-RS resource is used for CSI measurement reporting, that is, the CSI-RS resource is associated with a CSI measurement report. The transmit power within a reporting sub-band of the CSI-RS resource remains the same, while the transmit power of different reporting sub-bands of the CSI-RS resource can be different. Understandably, a CSI measurement report can be submitted using either sub-band reporting or wideband reporting. Sub-band reporting means that a corresponding measurement result is reported separately on different sub-bands of a CSI resource, with each sub-band occupying one or more consecutive red-band blocks (RBs) in the frequency domain. Wideband reporting means that only one wideband measurement result obtained from all frequency domain resources of the CSI-RS resource is reported on a single CSI resource.

[0251] For example, assuming the terminal device reports a CSI report to the access network device using subband reporting, the first frequency domain resource includes one or more first RBGs, the second frequency domain resource includes one or more second RBGs, any one of the one or more first RBGs corresponds to a first reporting subband of the CSI report, and any one of the one or more second RBGs corresponds to a second reporting subband of the CSI report. The CSI report is associated with the first downlink signal. That is, the access network device can reduce its transmit power according to the subband granularity of the CSI report.

[0252] Furthermore, the access network device can indicate power information (e.g., the first transmit power or the second transmit power) and its corresponding frequency domain resources (e.g., the first frequency domain resources or the second frequency domain resources) to the terminal device through semi-static signaling configuration or dynamic indication. The specific implementation method is described below and will not be explained here.

[0253] In summary, the access network device reduces the transmit power of the first downlink channel or the first downlink signal on a portion of frequency domain resources (e.g., the first frequency domain resources). For example, for the first downlink channel (e.g., PDSCH), the access network device reduces the transmit power of the PDSCH according to PRG or RB granularity; for the first downlink channel (e.g., PDCCH), the access network device reduces the transmit power of the PDCCH according to REG bundle or REG granularity; for the first downlink signal (e.g., CSI-RS), the access network device reduces the transmit power of the CSI-RS according to the subband granularity of the CSI report.

[0254] The following examples illustrate the specific implementation methods of semi-static configuration or dynamic indication power information (e.g., first transmit power and / or second transmit power) of access network devices and their corresponding frequency domain resources (e.g., first frequency domain resources and / or second frequency domain resources).

[0255] Scenario 1: The access network equipment is configured semi-statically or dynamically to indicate frequency domain resources.

[0256] In the first implementation, the access network device sends first information to the terminal device, the first information being used to indicate a first frequency domain resource and / or a second frequency domain resource; correspondingly, the terminal device receives the first information from the access network device and determines the first frequency domain resource and / or the second frequency domain resource based on the first information.

[0257] For example, for the first downlink channel (e.g., PDSCH), assuming PDSCH transmission occupies 0-5RB and 8-12RB, where the access network device reduces the transmit power on 0-5RB (i.e., the first frequency domain resource) but does not reduce the transmit power on 8-12RB (i.e., the second frequency domain resource), or in other words, the transmit power on 8-12RB remains unchanged, then the access network device can semi-statically configure or dynamically indicate the first and second frequency domain resources to the terminal device, i.e., indicate 0-5RB and 8-12RB; or, the access network device can semi-statically configure or dynamically indicate the offset between the first and second frequency domain resources to the terminal device. For example, the access network device indicates the first frequency domain resource and offset #1, such as offset #1 being +3, indicating that the frequency domain position of the second frequency domain resource is shifted up by 3 RBs compared to the first frequency domain resource; as another example, the access network device indicates the second frequency domain resource and offset #2, such as offset #2 being -3, indicating that the frequency domain position of the first frequency domain resource is shifted down by 3 RBs compared to the second frequency domain resource.

[0258] In the second implementation, the access network device sends first information to the terminal device, which indicates third frequency domain resources and / or fourth frequency domain resources, wherein the third frequency domain resources include the first frequency domain resources and the fourth frequency domain resources include the second frequency domain resources; correspondingly, the terminal device receives the first information from the access network device and determines the first frequency domain resources and / or the second frequency domain resources based on the first information.

[0259] For example, for the first downlink channel (e.g., PDCCH), assuming PDCCH transmission occupies 0-4REG and 8-10REG, where the access network device reduces the transmit power on 0-4REG (i.e., the first frequency domain resource) but does not reduce the transmit power on 8-10REG (i.e., the second frequency domain resource), or in other words, the transmit power on 8-10REG remains unchanged, then the access network device can semi-statically configure or dynamically indicate the first and second frequency domain resources to the terminal device, i.e., indicate 0-4REG and 8... ~10REG; or, the access network device can semi-statically configure or dynamically indicate the offset between the first frequency domain resource and the second frequency domain resource to the terminal device. For example, the access network device indicates the first frequency domain resource and offset #3, such as offset #3 being +4, indicating that the frequency domain position of the second frequency domain resource is shifted up by 4 REGs compared to the first frequency domain resource; or, for another example, the access network device indicates the second frequency domain resource and offset #4, such as offset #4 being -4, indicating that the frequency domain position of the first frequency domain resource is shifted down by 4 REGs compared to the second frequency domain resource.

[0260] Without loss of generality, the offsets #1, #2, #3, and #4 mentioned above can be positive or negative. In other words, the position of the second frequency domain resource relative to the first frequency domain resource can be offset to the left or right, or offset up or down, without limitation.

[0261] The above is merely an example to facilitate understanding of the technical solution; other possible solutions are not excluded.

[0262] Scenario 2: The access network equipment is configured in a semi-static manner or dynamically indicates power information.

[0263] In the first implementation, the access network device sends second information to the terminal device, which is used to indicate the absolute value of the first transmit power and / or the absolute value of the second transmit power.

[0264] For example, the access network device can configure or indicate the transmit power (energy per resource element, EPRE) or the transmit power (energy per resource block, EPRB) of each RE to the terminal device. That is, EPRE refers to the energy in a RE, and EPRB refers to the energy in a RB.

[0265] FIG. 10 is a schematic diagram of the access network device configuring / indicating the absolute value of the transmit power provided by an embodiment of the present application. As shown in FIG. 10, the horizontal axis represents the time domain and the vertical axis represents the frequency domain. The frequency domain resources of the first downlink channel or the first downlink signal include the first frequency domain resource and the second frequency domain resource. Among them, the transmit power on the first frequency domain resource is P1 (i.e., the first transmit power), and the transmit power on the second frequency domain resource is P2 (i.e., the second transmit power). Assuming that the access network device reduces the transmit power on the first frequency domain resource and does not reduce the transmit power on the second frequency domain resource, it means that P1 < P2. In this implementation, the access network device can send the second information to the terminal device, and the second information can include the absolute values of P1 and P2. It can be understood that P1 or P2 can be a positive number or a negative number, and no limitation is made thereto. A common unit is dBm (decibel milliwatt). It should be noted that a negative transmit power does not mean that the power itself is negative, but represents the level of the power relative to a certain reference point.

[0266] In the second implementation, the access network device sends the second information to the terminal device, and the second information is used to indicate the value of the second transmit power and the first offset value, where the first offset value is the difference between the first transmit power and the second transmit power; or, the second information is used to indicate the value of the first transmit power and the second offset value, where the second offset value is the difference between the second transmit power and the first transmit power.

[0267] That is to say, by sending the second information, the access network device can indicate the transmit power of a frequency domain resource and the first offset value, and the terminal device can determine the transmit power of another frequency domain resource.

[0268] In the third implementation, the access network device sends the second information to the terminal device, and the second information is used to indicate the first offset value, where the first offset value is the difference between the first transmit power and the second transmit power.

[0269] That is to say, by sending the second information, the access network device can indicate the offset value between the first transmit power and the second transmit power. Furthermore, based on the fact that the transmit power on the second frequency domain resource remains unchanged, the terminal device can determine the transmit power on the first frequency domain resource.

[0270] In summary, the access network device can semi-statically configure or dynamically indicate the relative value of the transmit power to the terminal device, or rather the transmit power offset value (which can also be called the difference value). That is, configure or indicate the relative value or offset value between the first transmit power and the second transmit power, and no limitation is made thereto.

[0271] Figure 11 is a schematic diagram of the difference or offset value of the transmission power configuration / indication of the access network device provided in the embodiment of this application. As shown in Figure 11, the horizontal axis represents the time domain and the vertical axis represents the frequency domain. The frequency domain resources of the first downlink channel or the first downlink signal include the first frequency domain resources and the second frequency domain resources. Assuming that the access network device reduces the transmission power on the first frequency domain resources but does not reduce the transmission power on the second frequency domain resources, the access network device can send second information to the terminal device. The second information may include a first offset (also called a power difference or offset value). That is, the first offset is relative to the second frequency domain resources with unchanged transmission power. In other words, by indicating the first offset, the offset of the frequency domain position of the first frequency domain resources relative to the second frequency domain resources (e.g., an upward offset or a downward offset) can be determined.

[0272] The specific implementation methods for the above two configuration or indication power information can be categorized into the following implementation methods from the perspective of configuration or indication granularity.

[0273] In the first implementation, the power information for each downlink channel / signal is configured or indicated individually, meaning that the access network device can configure or indicate the corresponding power information for each downlink channel / signal.

[0274] In other words, the power information of all downlink channels / signals is shared or the same, meaning that access network devices can configure or indicate corresponding power information for all downlink channels / signals.

[0275] In the second implementation, the above configuration or indication information can be UE- or BWP-specific, that is, the access network device configures or indicates the corresponding power information separately for each UE or BWP.

[0276] For example, the above configuration or indication information can also be common to the UE group. That is, the access network device configures or indicates the corresponding power information separately for each UE group, and each UE group can include one or more UEs.

[0277] For example, the above configuration or indication information can also be common to the cell, that is, the access network equipment configures or indicates the corresponding power information for all UEs in the cell.

[0278] In the third implementation, the above configuration or indication information can be channel / signal priority-specific. That is, the access network device configures or indicates the corresponding power information separately for each channel / signal priority. For example, for PDSCH, if the first PDSCH transmission priority is higher than the second PDSCH transmission priority, for example, the first PDSCH transmission carries URLLC type service data and the second PDSCH transmission carries non-URLLC type service data, then the first PDSCH transmission may not reduce its transmission power, only the second PDSCH transmission may reduce its transmission power, or both the first and second PDSCH transmissions may reduce their transmission power, and the reduction in transmission power of the first PDSCH transmission is less than the reduction in transmission power of the second PDSCH transmission.

[0279] In one example, for semi-static configuration, access network devices can be configured via higher-level signaling such as SIB, RRC signaling, and Media Access Control (MCE) control element (MAC CE). Optionally, semi-static configuration is more suitable for channels or signals such as PDCCH, CG type 1 PDSCH, CSI-RS, and SSB.

[0280] In another example, for dynamic indication, the access network device can provide indication via physical layer signaling such as DCI. For instance, the access network device can directly indicate power information via DCI; or, for another example, the access network device can first semi-statically configure multiple power information via higher-layer signaling, and then indicate which of the multiple power information to use via DCI. Optionally, dynamic indication is more suitable for dynamically scheduled PDSCH and CG type 2 PDSCH.

[0281] It should be noted that the above are merely examples to facilitate understanding of the solutions, and other solutions are not excluded.

[0282] In this embodiment, the two scenarios of configuring or indicating power information and its corresponding frequency domain resources can be implemented independently or in combination, without limitation. That is, the access network device can configure or indicate power information and its corresponding frequency domain resource information independently; in other words, the configuration or indication of power information and its corresponding frequency domain resource information is decoupled. For example, the frequency domain resource information can be cell-common, while the power information is UE / BWP-specific or dedicated to the first downlink channel / first downlink signal; alternatively, the access network device can also jointly configure or indicate power information and its corresponding frequency domain resource information. For example, both the power information and its corresponding frequency domain resource information can be cell-common, UE / BWP-specific, or dedicated to the first downlink channel / first downlink signal.

[0283] Optionally, in addition to frequency domain resources, access network devices can also configure / indicate time domain resources corresponding to power information. For example, access network devices can configure or instruct terminal devices to perform power reduction operations at which time domain locations. For specific implementation methods, please refer to the relevant description of the implementation methods of access network devices configuring or indicating frequency domain resources. For the sake of brevity, it will not be explained here.

[0284] Optionally, the access network device may also configure or indicate power information and its corresponding time-domain resource information or frequency-domain resource information separately. That is, the configuration or indication of power information and its corresponding time-domain resource information and frequency-domain resource information is decoupled. Alternatively, the access network device may also jointly configure or indicate power information and its corresponding time-domain resource information and frequency-domain resource information, without limitation.

[0285] By employing the above method, the access network equipment reduces the transmit power of the first downlink channel or the first downlink signal on a portion of the frequency domain resources, thereby reducing CLI while minimizing the performance impact on the first downlink channel or the first downlink signal. It is understood that the transmit power of the first downlink channel or the first downlink signal differs between the first and second frequency domain resources; in other words, the magnitude of the power reduction differs between the first and second frequency domain resources. Compared to reducing transmit power across all frequency domain resources of the entire carrier, this implementation avoids or reduces cross-link interference problems while preventing excessive performance loss of the downlink channel or downlink signal, thus ensuring system transmission performance.

[0286] Optionally, the network devices in this application embodiment can be implemented using a separate architecture. Specifically, under the ORAN architecture, the access network devices may include O-CU, O-DU, and O-RU. Among them, O-RU and O-CU are responsible for signal reception and transmission, while O-DU is responsible for signal processing.

[0287] For example, in this embodiment, the access network device can determine the transmit power of the downlink channel / signal to be transmitted in the CU, and specifically in the CU-CP. The CU-CP is a logical node that carries the RRC layer and PDCP-C layer and is used to implement the control plane functions of the CU. In addition to the access network device determining the transmit power, if the access network device needs to semi-statically configure power information and corresponding frequency domain resource information for the UE through higher-layer signaling, the higher-layer signaling can also be generated in the CU.

[0288] In this technical solution, the DU can perform RLC layer, MAC layer, and Higher PHY layer processing on the downlink channel / signal to be transmitted by the access network device. The RU is a logical node carrying Lower PHY and RF processing. In this application's technical solution, the RU can further process the downlink channel / signal to be transmitted by the access network device using Lower PHY and RF processing, and then transmit the downlink channel / signal to be transmitted to the UE through the air interface according to the power information. If the access network device also needs to configure / indicate the corresponding frequency domain resource information for the power information to the UE through higher layer signaling or physical layer signaling, the DU can also process the signaling, and after processing by the RU, transmit it to the UE through the air interface.

[0289] The communication method embodiment of this application has been described in detail above with reference to Figures 1 to 11. The communication device embodiment of this application will now be described in detail with reference to Figures 12 to 14. It should be understood that the description of the device embodiment corresponds to the description of the method embodiment; therefore, any parts not described in detail can be referred to the preceding method embodiment.

[0290] This application embodiment can divide the transmitting or receiving device into functional modules according to the above method examples. For example, each function can be divided into its own functional modules, or two or more functions can be integrated into one processing module. The integrated module can be implemented in hardware or as a software functional module. It should be noted that the module division in this application embodiment is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods. The following description uses the division of functional modules according to each function as an example.

[0291] Figure 12 is a possible exemplary block diagram of the communication device involved in the embodiments of this application. As shown in Figure 12, the communication device 1000 may include modules or units for implementing the methods described above. In one possible design, the communication device 1000 includes a communication unit 1003 and a processing unit 1002. Optionally, the communication device 1000 may further include a storage unit 1001 for storing device program code and / or data. The communication unit 1003 may also be referred to as a communication interface, transceiver unit, or interface unit.

[0292] The communication device 1000 can be a terminal-side device as described in the above embodiments, such as a terminal device or a communication module in a terminal device, or a circuit or chip in a terminal device that is responsible for communication functions.

[0293] For example, in one embodiment, the communication unit 1003 is used to receive first scheduling information, which is used to schedule a first downlink channel or a first downlink signal. The frequency domain resources of the first downlink channel or the first downlink signal include first frequency domain resources and second frequency domain resources. The transmission power of the first downlink channel or the first downlink signal on the first frequency domain resources is a first transmission power, and the transmission power of the first downlink channel or the first downlink signal on the second frequency domain resources is a second transmission power. The first transmission power is less than the second transmission power. The communication unit 1003 is also used to receive the first downlink channel or the first downlink signal according to the first scheduling information.

[0294] For example, when the first downlink channel is a downlink data channel and the precoding granularity of the first downlink channel is a subband, the first frequency domain resource includes one or more first PRGs, the second frequency domain resource includes one or more second PRGs, the transmit power on all RBs contained in any of the one or more first PRGs is the same, and the transmit power on all RBs contained in any of the one or more second PRGs is the same.

[0295] For example, when the first downlink channel is a downlink data channel and the precoding granularity of the first downlink channel is a sub-band, the first frequency domain resource includes the first RB, the second frequency domain resource includes the second RB, and the first RB and the second RB belong to the same PRG.

[0296] For example, when the first downlink channel is a downlink control channel and the precoding granularity of the first downlink channel is a sub-band, the first frequency domain resource includes one or more first REG sets, the second frequency domain resource includes one or more second REG sets, the transmit power of all REGs contained in any of the one or more first REG sets is the same, and the transmit power of all REGs contained in any of the one or more second REG sets is the same.

[0297] For example, when the first downlink channel is a downlink control channel and the precoding granularity of the first downlink channel is a sub-band, the first frequency domain resource includes a first REG, the second frequency domain resource includes a second REG, and the first REG and the second REG belong to the same REG set.

[0298] For example, when the first downlink channel is a downlink control channel or a downlink data channel, and the precoding granularity of the first downlink channel is wideband, the communication unit 1003 is further configured to receive the first downlink channel within a frequency domain resource range of the first frequency domain resource or the second frequency domain resource.

[0299] For example, when the first downlink channel is a downlink control channel or a downlink data channel, and the precoding granularity of the first downlink channel is wideband, the first downlink channel corresponds to the first precoding when transmitted on the first frequency domain resource, and corresponds to the second precoding when transmitted on the second frequency domain resource.

[0300] For example, when the first downlink channel is a downlink control channel or a downlink data channel, and the precoding granularity of the first downlink channel is wideband, the first downlink channel corresponds to the third precoding when transmitted on the first frequency domain resources and the second frequency domain resources.

[0301] For example, when the first downlink signal is a reference signal or a synchronization signal, the communication unit 1003 is further configured to receive the first downlink signal within a frequency domain resource range of the first frequency domain resource or the second frequency domain resource.

[0302] For example, when the first downlink signal is a reference signal or a synchronization signal, the communication unit 1003 is further configured to receive the first downlink signal on the first frequency domain resource and the second frequency domain resource; wherein, the first frequency domain resource includes one or more first RBGs, the second frequency domain resource includes one or more second RBGs, any one of the one or more first RBGs corresponds to a first reporting subband of the CSI report, any one of the one or more second RBGs corresponds to a second reporting subband of the CSI report, and the CSI report is associated with the first downlink signal.

[0303] For example, the communication unit 1003 is further configured to receive first information, wherein the first information is used to indicate a first frequency domain resource and / or a second frequency domain resource, or the first information is used to indicate a third frequency domain resource and / or a fourth frequency domain resource, wherein the third frequency domain resource includes the first frequency domain resource and the fourth frequency domain resource includes the second frequency domain resource.

[0304] For example, the communication unit 1003 is further configured to receive second information, wherein the second information is configured to indicate the absolute value of the first transmission power and / or the absolute value of the second transmission power, or, the second information is configured to indicate the value of the second transmission power and a first offset value, the first offset value being the difference between the first transmission power and the second transmission power, or, the second information is configured to indicate the value of the first transmission power and a second offset value, the second offset value being the difference between the second transmission power and the first transmission power, or, the second information is configured to indicate a first offset value, the first offset value being the difference between the first transmission power and the second transmission power.

[0305] In one possible design, when the communication device 1000 is a terminal device or a communication module within a terminal device, the function of the processing unit 1002 can be implemented by one or more processors. Specifically, the processor may include a modem chip, or a system-on-a-chip (SoC) chip or a SIP chip containing a modem core. The function of the communication unit 1003 can be implemented by a transceiver circuit.

[0306] In one possible design, when the communication device 1000 is a circuit or chip responsible for communication functions in a terminal device, such as a modem chip or a system-on-a-chip (SoC) or SIP chip containing a modem core, the function of the processing unit 1002 can be implemented by a circuit system in the aforementioned chip that includes one or more processors or processor cores. The function of the communication unit 1003 can be implemented by an interface circuit or data transceiver circuit on the aforementioned chip.

[0307] The communication device 1000 can be a network-side device in the above embodiments, such as an access network device, or a module (e.g., circuit, chip, or chip system) in the access network device, or a logical node or logical module that can realize all or part of the functions of the access network device.

[0308] For example, in one embodiment, the communication unit 1003 is used to send first scheduling information, which is used to schedule a first downlink channel or a first downlink signal. The frequency domain resources of the first downlink channel or the first downlink signal include first frequency domain resources and second frequency domain resources. The transmission power of the first downlink channel or the first downlink signal on the first frequency domain resources is a first transmission power, and the transmission power of the first downlink channel or the first downlink signal on the second frequency domain resources is a second transmission power. The first transmission power is less than the second transmission power. The communication unit 1003 is also used to send the first downlink channel or the first downlink signal according to the first scheduling information.

[0309] For example, when the first downlink channel is a downlink data channel and the precoding granularity of the first downlink channel is a subband, the first frequency domain resource includes one or more first PRGs, the second frequency domain resource includes one or more second PRGs, the transmit power on all RBs contained in any of the one or more first PRGs is the same, and the transmit power on all RBs contained in any of the one or more second PRGs is the same.

[0310] For example, when the first downlink channel is a downlink data channel and the precoding granularity of the first downlink channel is a sub-band, the first frequency domain resource includes the first RB, the second frequency domain resource includes the second RB, and the first RB and the second RB belong to the same PRG.

[0311] For example, when the first downlink channel is a downlink control channel and the precoding granularity of the first downlink channel is a sub-band, the first frequency domain resource includes one or more first REG sets, the second frequency domain resource includes one or more second REG sets, the transmit power of all REGs contained in any of the one or more first REG sets is the same, and the transmit power of all REGs contained in any of the one or more second REG sets is the same.

[0312] For example, when the first downlink channel is a downlink control channel and the precoding granularity of the first downlink channel is a sub-band, the first frequency domain resource includes a first REG, the second frequency domain resource includes a second REG, and the first REG and the second REG belong to the same REG set.

[0313] For example, when the first downlink channel is a downlink control channel or a downlink data channel, and the precoding granularity of the first downlink channel is wideband, the communication unit 1003 is further configured to transmit the first downlink channel within one of the frequency domain resources in the first frequency domain resource or the second frequency domain resource.

[0314] For example, when the first downlink channel is a downlink control channel or a downlink data channel, and the precoding granularity of the first downlink channel is wideband, the first downlink channel corresponds to the first precoding when transmitted on the first frequency domain resource, and corresponds to the second precoding when transmitted on the second frequency domain resource.

[0315] For example, when the first downlink channel is a downlink control channel or a downlink data channel, and the precoding granularity of the first downlink channel is wideband, the first downlink channel corresponds to the third precoding when transmitted on the first frequency domain resources and the second frequency domain resources.

[0316] For example, when the first downlink signal is a reference signal or a synchronization signal, the communication unit 1003 is further configured to transmit the first downlink signal within a frequency domain resource range of the first frequency domain resource or the second frequency domain resource.

[0317] For example, when the first downlink signal is a reference signal or a synchronization signal, the communication unit 1003 is further configured to transmit the first downlink signal on the first frequency domain resource and the second frequency domain resource; wherein, the first frequency domain resource includes one or more first RBGs, the second frequency domain resource includes one or more second RBGs, any one of the one or more first RBGs corresponds to a first reporting subband of the CSI report, any one of the one or more second RBGs corresponds to a second reporting subband of the CSI report, and the CSI report is associated with the first downlink signal.

[0318] For example, the communication unit 1003 is further configured to send first information, wherein the first information is used to indicate a first frequency domain resource and / or a second frequency domain resource, or the first information is used to indicate a third frequency domain resource and / or a fourth frequency domain resource, wherein the third frequency domain resource includes the first frequency domain resource and the fourth frequency domain resource includes the second frequency domain resource.

[0319] For example, the communication unit 1003 is further configured to transmit second information, wherein the second information is configured to indicate the absolute value of the first transmission power and / or the absolute value of the second transmission power, or, the second information is configured to indicate the value of the second transmission power and a first offset value, the first offset value being the difference between the first transmission power and the second transmission power, or, the second information is configured to indicate the value of the first transmission power and a second offset value, the second offset value being the difference between the second transmission power and the first transmission power, or, the second information is configured to indicate a first offset value, the first offset value being the difference between the first transmission power and the second transmission power.

[0320] In one possible design, when the communication device 1000 is an access network device or a communication module within an access network device, the function of the processing unit 1002 can be implemented by one or more processors. Specifically, the processor may include a chip. The function of the communication unit 1003 can be implemented by a transceiver circuit.

[0321] In one possible design, when the communication device 1000 is a circuit or chip responsible for communication functions in an access network device, the function of the processing unit 902 can be implemented by a circuit system in the chip that includes one or more processors or processor cores. The function of the communication unit 903 can be implemented by an interface circuit or data transceiver circuit on the chip.

[0322] It is understandable that the division of units in the above-mentioned device is merely a logical functional division. One function can correspond to one functional unit, or two or more functions can be integrated into one functional unit. In actual implementation, all or some units can be integrated into one physical entity, or they can be distributed across different physical entities. Furthermore, the above-mentioned functional units can be implemented in hardware, software, or a combination of both.

[0323] In one example, the functional unit in any of the above devices may be one or more integrated circuits configured to implement the above methods, such as: one or more application-specific integrated circuit (ASIC) designs, or one or more central processing units (CPUs), one or more microprocessor units (MPUs), one or more microcontroller units (MCUs), one or more digital signal processors (DSPs), or one or more field-programmable gate arrays (FPGAs), or a combination of at least two of these integrated circuit forms.

[0324] In one example, storage unit 1001 may include random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory and / or registers, etc.

[0325] Furthermore, the aforementioned communication unit 1003 can also be a transceiver circuit (e.g., it may include a receiving circuit and a transmitting circuit), and the processing unit 1002 can be a processing circuit. In embodiments of this application, the device in FIG12 can be a terminal device or access network device as described in the foregoing embodiments, or it can be a chip or a chip system, such as a SoC. The communication unit 1003 can be an input / output circuit or a communication interface. The processing unit 1002 is a processor, microprocessor, or integrated circuit integrated on the chip. No limitations are imposed here.

[0326] Figure 13 is a schematic block diagram of a communication device 2000 provided in an embodiment of this application. As shown in Figure 13, the device 2000 includes a transceiver 2020.

[0327] Optionally, the device 2000 may further include a memory 2030 and / or a processor 2010, wherein the processor 2010 and the transceiver 2020 communicate with each other via an internal connection path. The processor 2010 is used to execute instructions to control the transceiver 2020 to transmit and / or receive signals. The memory 2030 communicates with the processor 2010 and the transceiver 2020 via an internal connection path. The memory 2030 is used to store instructions, and the processor 2010 can execute the instructions stored in the memory 2030.

[0328] In one implementation, the apparatus 2000 is used to implement the various processes and steps corresponding to the terminal device in the above method embodiments.

[0329] For example, transceiver 2020 is used to receive first information, which indicates a first PRACH resource, which is used by the terminal device to perform initial random access, and the first PRACH resource is in an inactive state; transceiver 2020 is also used to receive second information, which indicates the activation of the first PRACH resource; processor 2010 is used to perform initial random access according to the first PRACH resource.

[0330] In another implementation, the apparatus 2000 is used to implement the various processes and steps corresponding to the access network device in the above method embodiments.

[0331] For example, transceiver 2020 is used to send first information, which is used to indicate a first PRACH resource. The first PRACH resource is used for random access by the terminal device. The first PRACH resource is in an inactive state. The second PRACH resource and the first PRACH resource occupy different time-frequency domain resources. Transceiver 2020 is also used to send second information, which is used to indicate activation of the first PRACH resource.

[0332] It should be understood that the device 2000 may specifically be the terminal device or access network device in the above embodiments, or it may be a chip or chip system. Correspondingly, the transceiver 2020 may be the transceiver circuit of the chip, which is not limited here. Specifically, the device 2000 may be used to execute the various steps and / or processes corresponding to the terminal device or access network device in the above method embodiments.

[0333] Optionally, the memory 2030 may include read-only memory and random access memory, and provide instructions and data to the processor. A portion of the memory may also include non-volatile random access memory. For example, the memory may also store device type information. The processor 2010 may be used to execute instructions stored in the memory, and when the processor 2010 executes instructions stored in the memory, the processor 2010 is used to perform the various steps and / or processes of the method embodiments corresponding to the terminal device or access network device described above.

[0334] In implementation, each step of the above method can be completed by integrated logic circuits in the processor hardware or by instructions in software. The steps of the method claimed in the embodiments of this application can be directly implemented by a hardware processor, or by a combination of hardware and software modules in the processor. The software modules can reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory, and the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above method. To avoid repetition, detailed descriptions are omitted here.

[0335] It should be noted that the processor in the embodiments of this application can be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiments can be completed by the integrated logic circuits in the processor's hardware or by instructions in software form. The processor can be a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The processor in the embodiments of this application can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method applied in conjunction with the embodiments of this application can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules can be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory, and the processor reads the information in the memory and, in conjunction with its hardware, completes the steps of the above method.

[0336] It is understood that the memory in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memory used in the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0337] Figure 14 is a schematic block diagram of a chip system 3000 provided in an embodiment of this application. As shown in Figure 14, the chip system 3000 (or may also be called a processing system) includes logic circuitry 3010 and an input / output interface 3020.

[0338] The logic circuit 3010 can be a processing circuit in the chip system 3000. The logic circuit 3010 can be coupled to a memory unit, calling instructions from the memory unit, enabling the chip system 3000 to implement the methods and functions of the embodiments of this application. The input / output interface 3020 can be an input / output circuit in the chip system 3000, outputting processed information from the chip system 3000, or inputting data or signaling information to be processed into the chip system 3000 for processing.

[0339] As one approach, the chip system 3000 is used to implement the operations performed by the access network device in the various method embodiments described above.

[0340] For example, logic circuit 3010 is used to implement the processing-related operations performed by the access network device in the above method embodiments, as shown in the embodiment of FIG9; input / output interface 3020 is used to implement the sending and / or receiving-related operations performed by the access network device in the above method embodiments, as shown in the embodiment of FIG9.

[0341] As an alternative, the chip system 3000 is used to implement the operations performed by the terminal device in the various method embodiments described above.

[0342] For example, logic circuit 3010 is used to implement the processing-related operations performed by the terminal device in the above method embodiments, as shown in the embodiment of FIG9; input / output interface 3020 is used to implement the sending and / or receiving-related operations performed by the terminal device in the above method embodiments, as shown in the embodiment of FIG9.

[0343] This application also provides a computer-readable storage medium storing computer instructions for implementing the methods executed by a communication device (e.g., a terminal device and / or an access network device) in the above-described method embodiments.

[0344] This application also provides a computer program product comprising instructions which, when executed by a computer, implement the methods described above that are executed by a communication device (e.g., a terminal device and / or an access network device).

[0345] This application also provides a communication system, which includes the terminal device and / or access network device described in the above embodiments.

[0346] The explanations and beneficial effects of the relevant contents in any of the devices provided above can be referred to the corresponding method embodiments provided above, and will not be repeated here.

[0347] In the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0348] This application will present various aspects, embodiments, or features relating to systems that may include multiple devices, components, modules, etc. It should be understood and appreciated that individual systems may include additional devices, components, modules, etc., and / or may not include all the devices, components, modules, etc. discussed in conjunction with the accompanying drawings. Furthermore, combinations of these approaches are also possible.

[0349] In this application, examples may reference each other without logical contradiction. For example, methods and / or terms between method embodiments may reference each other, functions and / or terms between device embodiments may reference each other, and functions and / or terms between device examples and method examples may reference each other.

[0350] It should be understood that the above embodiments are mainly illustrated using devices in existing network architectures as examples, and the specific form of the devices is not limited in the embodiments of this application. For example, any device that can achieve the same function in the future is applicable to the embodiments of this application.

[0351] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0352] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be described again here.

[0353] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0354] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this implementation scheme according to actual needs.

[0355] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0356] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to existing solutions, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, external hard drives, ROM, RAM, magnetic disks, or optical disks.

[0357] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A communication method, characterized in that, include: Receive first scheduling information, the first scheduling information is used to schedule a first downlink channel or a first downlink signal, the frequency domain resources of the first downlink channel or the first downlink signal include first frequency domain resources and second frequency domain resources, the transmit power of the first downlink channel or the first downlink signal on the first frequency domain resources is a first transmit power, the transmit power of the first downlink channel or the first downlink signal on the second frequency domain resources is a second transmit power, and the first transmit power is less than the second transmit power; Based on the first scheduling information, the first downlink channel or the first downlink signal is received.

2. The method according to claim 1, characterized in that, When the first downlink channel is a downlink data channel, and the precoding granularity of the first downlink channel is sub-band, The first frequency domain resource includes one or more first precoding resource block groups (PRGs), and the second frequency domain resource includes one or more second PRGs. The transmit power on all resource blocks (RBs) contained in any of the one or more first PRGs is the same, and the transmit power on all RBs contained in any of the one or more second PRGs is the same.

3. The method of claim 1, wherein, When the first downlink channel is a downlink data channel, and the precoding granularity of the first downlink channel is sub-band, The first frequency domain resource includes a first RB, and the second frequency domain resource includes a second RB. The first RB and the second RB belong to the same PRG.

4. The method according to any one of claims 1 to 3, characterized in that, When the first downlink channel is a downlink control channel, and the precoding granularity of the first downlink channel is sub-band, The first frequency domain resource includes one or more first resource element groups (REGs), and the second frequency domain resource includes one or more second REGs. The transmit power of all REGs contained in any of the one or more first REGs is the same, and the transmit power of all REGs contained in any of the one or more second REGs is the same.

5. The method according to any one of claims 1 to 3, characterized in that, When the first downlink channel is a downlink control channel, and the precoding granularity of the first downlink channel is sub-band, The first frequency domain resource includes a first REG, and the second frequency domain resource includes a second REG. The first REG and the second REG belong to the same REG set.

6. The method according to any one of claims 1 to 5, characterized in that, When the first downlink channel is a downlink control channel or a downlink data channel, and the precoding granularity of the first downlink channel is wideband, According to the first scheduling information, receiving the first downlink channel includes: The first downlink channel is received within one of the frequency domain resources, either the first or the second frequency domain resource.

7. The method according to any one of claims 1 to 5, characterized in that, When the first downlink channel is a downlink control channel or a downlink data channel, and the precoding granularity of the first downlink channel is wideband, When the first downlink channel is transmitted on the first frequency domain resource, it corresponds to the first precoding, and when the first downlink channel is transmitted on the second frequency domain resource, it corresponds to the second precoding.

8. The method according to any one of claims 1 to 5, characterized in that, When the first downlink channel is a downlink control channel or a downlink data channel, and the precoding granularity of the first downlink channel is wideband, The first downlink channel corresponds to the third precoding when it is transmitted on the first frequency domain resource and the second frequency domain resource.

9. The method according to any one of claims 1 to 8, characterized in that, When the first downlink signal is a reference signal or a synchronization signal Receiving the first downlink signal according to the first scheduling information includes: The first downlink signal is received within one of the frequency domain resources, either the first or the second frequency domain resource.

10. The method according to any one of claims 1 to 8, characterized in that, When the first downlink signal is a reference signal or a synchronization signal Receiving the first downlink signal according to the first scheduling information includes: The first downlink signal is received on the first frequency domain resource and the second frequency domain resource; Wherein, the first frequency domain resource includes one or more first resource block groups (RBGs), the second frequency domain resource includes one or more second RBGs, any one of the one or more first RBGs corresponds to a first reporting subband of the channel state information (CSI) report, any one of the one or more second RBGs corresponds to a second reporting subband of the CSI report, and the CSI report is associated with the first downlink signal.

11. The method according to any one of claims 1 to 10, characterized in that, The method further includes: Receive the first message, in which, The first information is used to indicate the first frequency domain resource and / or the second frequency domain resource, or, The first information is used to indicate a third frequency domain resource and / or a fourth frequency domain resource, wherein the third frequency domain resource includes the first frequency domain resource and the fourth frequency domain resource includes the second frequency domain resource.

12. The method according to any one of claims 1 to 11, characterized in that, The method further includes: Receive the second message, in which, The second information is used to indicate the absolute value of the first transmission power and / or the absolute value of the second transmission power, or, The second information is used to indicate the value of the second transmit power and a first offset value, wherein the first offset value is the difference between the first transmit power and the second transmit power, or... The second information is used to indicate the value of the first transmit power and a second offset value, wherein the second offset value is the difference between the second transmit power and the first transmit power, or... The second information is used to indicate a first offset value, which is the difference between the first transmit power and the second transmit power.

13. A communication method characterized by comprising: include: Send first scheduling information, the first scheduling information is used to schedule a first downlink channel or a first downlink signal, the frequency domain resources of the first downlink channel or the first downlink signal include first frequency domain resources and second frequency domain resources, the transmit power of the first downlink channel or the first downlink signal on the first frequency domain resources is a first transmit power, the transmit power of the first downlink channel or the first downlink signal on the second frequency domain resources is a second transmit power, and the first transmit power is less than the second transmit power; Based on the first scheduling information, the first downlink channel or the first downlink signal is transmitted.

14. The method of claim 13, wherein, When the first downlink channel is a downlink data channel, and the precoding granularity of the first downlink channel is sub-band, The first frequency domain resource includes one or more first PRGs, and the second frequency domain resource includes one or more second PRGs. The transmit power on all resource blocks (RBs) contained in any of the one or more first PRGs is the same, and the transmit power on all RBs contained in any of the one or more second PRGs is the same.

15. The method of claim 13, wherein, When the first downlink channel is a downlink data channel, and the precoding granularity of the first downlink channel is sub-band, The first frequency domain resource includes a first RB, and the second frequency domain resource includes a second RB. The first RB and the second RB belong to the same PRG.

16. The method according to any one of claims 13 to 15, characterized in that, When the first downlink channel is a downlink control channel, and the precoding granularity of the first downlink channel is sub-band, The first frequency domain resource includes one or more first REG sets, and the second frequency domain resource includes one or more second REG sets. The transmit power of all REGs contained in any of the one or more first REG sets is the same, and the transmit power of all REGs contained in any of the one or more second REG sets is the same.

17. The method according to any one of claims 13 to 15, characterized in that, When the first downlink channel is a downlink control channel, and the precoding granularity of the first downlink channel is sub-band, The first frequency domain resource includes a first REG, and the second frequency domain resource includes a second REG. The first REG and the second REG belong to the same REG set.

18. The method according to any one of claims 13 to 17, characterized in that, When the first downlink channel is a downlink control channel or a downlink data channel, and the precoding granularity of the first downlink channel is wideband, Based on the first scheduling information, the first downlink channel is transmitted, including: The first downlink channel is transmitted within one of the frequency domain resources, either the first or the second frequency domain resource.

19. The method according to any one of claims 13 to 17, characterized in that, When the first downlink channel is a downlink control channel or a downlink data channel, and the precoding granularity of the first downlink channel is wideband, When the first downlink channel is transmitted on the first frequency domain resource, it corresponds to the first precoding; when the first downlink channel is transmitted on the second frequency domain resource, it corresponds to the second precoding.

20. The method of any one of claims 13-17, wherein, When the first downlink channel is a downlink control channel or a downlink data channel, and the precoding granularity of the first downlink channel is wideband, The first downlink channel corresponds to the third precoding when it is transmitted on the first frequency domain resource and the second frequency domain resource.

21. The method according to any one of claims 13 to 20, characterized in that, When the first downlink signal is a reference signal or a synchronization signal Based on the first scheduling information, the first downlink signal is sent, including: The first downlink signal is transmitted within one of the frequency domain resources, either the first or the second frequency domain resource.

22. The method of any one of claims 13-20, wherein, When the first downlink signal is a reference signal or a synchronization signal Based on the first scheduling information, the first downlink signal is sent, including: The first downlink signal is transmitted on the first frequency domain resource and the second frequency domain resource; Wherein, the first frequency domain resource includes one or more first RBGs, the second frequency domain resource includes one or more second RBGs, any one of the one or more first RBGs corresponds to a first reporting subband of the Channel State Information (CSI) report, any one of the one or more second RBGs corresponds to a second reporting subband of the CSI report, and the CSI report is associated with the first downlink signal.

23. The method according to any one of claims 13 to 22, characterized in that, The method further includes: Send the first message, in which, The first information is used to indicate the first frequency domain resource and / or the second frequency domain resource, or, The first information is used to indicate a third frequency domain resource and / or a fourth frequency domain resource, wherein the third frequency domain resource includes the first frequency domain resource and the fourth frequency domain resource includes the second frequency domain resource.

24. The method of any one of claims 13-23, wherein, The method further includes: Send a second message, in which, The second information is used to indicate the absolute value of the first transmission power and / or the absolute value of the second transmission power, or, The second information is used to indicate the value of the second transmit power and a first offset value, wherein the first offset value is the difference between the first transmit power and the second transmit power, or... The second information is used to indicate the value of the first transmit power and a second offset value, wherein the second offset value is the difference between the second transmit power and the first transmit power, or... The second information is used to indicate a first offset value, which is the difference between the first transmit power and the second transmit power.

25. A communications device, characterized by It includes modules or units for performing the method as described in any one of claims 1 to 12, or modules or units for performing the method as described in any one of claims 13 to 24.

26. A communications device, characterized by It includes at least one processor, the at least one processor being configured to execute a computer program or instructions to cause the communication device to perform the method as described in any one of claims 1 to 12, or to cause the communication device to perform the method as described in any one of claims 13 to 24.

27. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program or instructions that, when executed, cause the method as described in any one of claims 1 to 24 to be performed.

28. A computer program product, characterised in that, It includes instructions that, when executed, cause the method as described in any one of claims 1 to 24 to be performed.

Images