Transmit power configuration method, IAB node, base station and storage medium

Abstract

This application discloses a transmit power configuration method, an IAB node, a base station, and a storage medium, relating to the field of communication technology. The method is applied to an Integrated Access Backhaul (IAB) node, which includes a Distributed Unit (DU) and a Mobile Terminal Unit (MT). The method includes: determining a first transmit power configuration for the DU and / or a second transmit power configuration for the MT; controlling the DU to transmit information according to the transmit power indicated by the first transmit power configuration, and / or the MT to transmit information according to the transmit power indicated by the second transmit power configuration, wherein the sum of the transmit power of the DU and the transmit power of the MT is less than or equal to the maximum transmit power of the IAB node. The technical solution of this application can solve the problem of low communication performance caused by conflicts in the transmit power of the DU and MT units of the IAB node.

Description

Technical Field

[0001] This application relates to the field of communications, and more particularly to a method for configuring transmission power, an IAB node, a base station, and a storage medium. Background Technology

[0002] An Integrated Access Backhaul (IAB) node consists of a Distributed Unit (DU) and a Mobile Termination (MT) unit. Using the MT unit, an IAB node can establish a wireless connection with a DU of a parent IAB node, thereby establishing a backhaul link for the IAB node.

[0003] As IAB technology evolves, IAB nodes need to support spatial multiplexing or frequency division multiplexing transmission between up-hop and down-hop. When an IAB node has only one radio frequency unit, conflicts can occur between the transmit power of the DU and MT units, thus reducing the communication performance of the IAB node. Summary of the Invention

[0004] This application provides a transmit power configuration method, an IAB node, a base station, and a storage medium to solve the problem of low communication performance caused by the conflict between the transmit power of the DU and MT units of the IAB node.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows:

[0006] In a first aspect, embodiments of this application provide a transmit power configuration method applied to an Integrated Access Backhaul (IAB) node, wherein the IAB node includes a Distributed Unit (DU) and a Mobile Terminal Unit (MT). The method includes:

[0007] Determine the first transmit power configuration of the DU and / or the second transmit power configuration of the MT unit;

[0008] The control DU transmits information according to the transmission power indicated by the first transmission power configuration, and / or the MT unit transmits information according to the transmission power indicated by the second transmission power configuration.

[0009] Among them, the sum of the transmission power of DU and the transmission power of MT unit is less than or equal to the maximum transmission power of IAB node.

[0010] Secondly, embodiments of this application provide an integrated access backhaul (IAB) node. The IAB node includes a distributed unit (DU) and a mobile terminal unit (MT). The IAB node also includes:

[0011] A power configuration determination module is used to determine the first transmit power configuration of the DU and / or the second transmit power configuration of the MT unit;

[0012] The transmission control module is used to control the DU to transmit information according to the transmission power indicated by the first transmission power configuration, and / or the MT unit to transmit information according to the transmission power indicated by the second transmission power configuration.

[0013] Among them, the sum of the transmission power of DU and the transmission power of MT unit is less than or equal to the maximum transmission power of IAB node.

[0014] Thirdly, embodiments of this application provide a base station, including a processor, a memory, and a computer program stored in the memory and executable on the processor. When the computer program is executed by the processor, it implements the transmission power configuration method in the technical solution of the first aspect.

[0015] Fourthly, embodiments of this application provide a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the transmission power configuration method in the first aspect of the technical solution.

[0016] In this embodiment, the IAB node determines the first transmit power configuration of the DU and / or the second transmit power configuration of the MT unit, thereby enabling the DU to transmit information according to the transmit power indicated by the first transmit power configuration, and / or controlling the MT unit to transmit information according to the transmit power indicated by the second transmit power configuration. The IAB node can pre-configure the transmit power of the DU and MT units, and the sum of the transmit power of the DU and the transmit power of the MT unit is less than or equal to the maximum transmit power of the IAB node. This achieves power sharing between the DU and MT units in the IAB node, avoids conflicts between the transmit power of the DU and MT units, and thus improves the communication performance of the IAB node. Attached Figure Description

[0017] This application can be better understood from the following description of specific embodiments in conjunction with the accompanying drawings. In this description, the same or similar reference numerals denote the same or similar features.

[0018] Figure 1 This is a schematic diagram of the structure of an IAB system provided in an embodiment of this application;

[0019] Figure 2 A schematic diagram illustrating the communication between an IAB node and a central unit, provided as an embodiment of this application;

[0020] Figure 3 A flowchart illustrating a transmission power configuration method provided in one embodiment of this application;

[0021] Figure 4This is a flowchart of a transmission power configuration method according to another embodiment of this application;

[0022] Figure 5 A flowchart illustrating a transmission power configuration method provided in another embodiment of this application;

[0023] Figure 6 A schematic diagram illustrating the time period occupied by downlink resources of a DU as provided in an embodiment of this application;

[0024] Figure 7 This is a schematic diagram of the structure of an IAB node provided in one embodiment of this application;

[0025] Figure 8 A schematic diagram of the structure of an IAB node is provided for another embodiment of this application;

[0026] Figure 9 A schematic diagram of the structure of an IAB node is provided in another embodiment of this application;

[0027] Figure 10 A schematic diagram of the structure of an IAB node is provided in another embodiment of this application;

[0028] Figure 11 A schematic diagram of the hardware structure of a base station for implementing the various embodiments of this application. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] This application provides a method for configuring transmit power, an IAB node, a base station, and a storage medium, which can be applied to an Integrated Access Backhaul (IAB) system. In situations where wired transmission networks are not adequately deployed, the IAB node can rely on wireless backhaul to transmit information. Figure 1 This is a schematic diagram of the structure of an IAB system provided in an embodiment of this application. Figure 1 As shown, an IAB node comprises multiple IAB nodes and multiple terminal devices. Each IAB node can connect to one or more terminal devices, but this is not limited. An IAB node can have a parent IAB node, and an IAB node can have child IAB nodes. For example... Figure 1Of the three IAB nodes shown, the second IAB node is the parent node of the first IAB node, and the third IAB node is the parent node of the second IAB node. IAB nodes can be implemented as base stations, but this is not limited to them. Terminal devices can be mobile phones, computers, tablets, or other communication devices, and this is not limited to them either.

[0031] An IAB node consists of a Distributed Unit (DU) and a Mobile Termination (MT) unit. Using the MT unit, an IAB node can establish a wireless connection with the DU of a parent IAB node, thereby establishing the IAB node's backhaul link. It should be noted that an integrated access backhaul loop includes a host IAB node (i.e., a donor IAB node). The host IAB node does not include the MT unit. Figure 2 This is a communication diagram between an IAB node and a Centralized Unit (CU) provided as an embodiment of this application. Figure 2 As shown, in an integrated access backhaul loop, the DUs of all IAB nodes are connected to a CU, which configures the DUs. The MT units of all IAB nodes are connected to this CU, which configures the MT units.

[0032] In some cases, an IAB node may only have one radio frequency (RF) unit, such as an RF device or a power amplifier (PA). To ensure that the transmit power of the DU and MT units in the IAB node does not conflict, power sharing between the DU and MT units is required. This application provides a transmit power configuration method that enables power sharing between the DU and MT units in an IAB node, thereby improving the communication performance of the IAB node.

[0033] This application provides a method for configuring transmit power, which can be applied to IAB nodes. Figure 3 This is a flowchart illustrating a transmission power configuration method according to an embodiment of this application. Figure 3 As shown, the transmission power configuration method may include steps S301 and S302.

[0034] In step S301, the first transmit power configuration of the DU and / or the second transmit power configuration of the MT unit are determined.

[0035] The first transmit power configuration is used to indicate the transmit power of the DU. The second transmit power configuration is used to indicate the transmit power of the MT unit.

[0036] In some examples, the IAB node can determine the first transmit power configuration of the DU and / or the second transmit configuration of the MT unit according to the definition of the protocol.

[0037] In other examples, the IAB node may determine the first transmit power configuration of the DU and / or the second transmit configuration of the MT unit based on the configuration of the upstream node. Specifically, the upstream node may be the CU or the parent IAB node of the IAB node. If the upstream node is the parent IAB node of the IAB node, the parent IAB node sends configuration information to the IAB node via Radio Resource Control (RRC) signaling or F1-C signaling. The RRC signaling may include System Information Block (SIB), UE-specific RRC, etc.

[0038] In some other examples, the IAB node can determine the first transmit power configuration of the DU and / or the second transmit configuration of the MT unit based on the configuration information of its own DU and MT units.

[0039] In step S302, the control DU transmits information according to the transmission power indicated by the first transmission power configuration, and / or the MT unit transmits information according to the transmission power indicated by the second transmission power configuration.

[0040] In some examples, the DU can transmit information according to the transmission power indicated by the first transmission power configuration, and the MT unit can transmit information according to the transmission power indicated by the second transmission power configuration.

[0041] In other examples, the DU may transmit information at the transmission power indicated by the first transmission power configuration, while the MT unit may transmit information at a transmission power not indicated by the second transmission power configuration.

[0042] In some other examples, the DU may transmit information at a power other than that indicated by the first transmit power configuration, and the MT unit may transmit information at a power other than that indicated by the second transmit power configuration.

[0043] However, it should be noted that the sum of the transmission power of the DU and the transmission power of the MT unit should be less than or equal to the maximum transmission power of the IAB node, in order to avoid the IAB node being unable to support the power transmission of the DU and MT units.

[0044] In this embodiment, the IAB node determines the first transmit power configuration of the DU and / or the second transmit power configuration of the MT unit, thereby enabling the DU to transmit information according to the transmit power indicated by the first transmit power configuration, and / or controlling the MT unit to transmit information according to the transmit power indicated by the second transmit power configuration. The IAB node can pre-configure the transmit power of the DU and MT units, and the sum of the transmit power of the DU and the transmit power of the MT unit is less than or equal to the maximum transmit power of the IAB node. This achieves power sharing between the DU and MT units in the IAB node, avoids conflicts between the transmit power of the DU and MT units, and thus improves the communication performance of the IAB node.

[0045] Figure 4 This is a flowchart of a transmission power configuration method according to another embodiment of this application. Figure 4 and Figure 3 The difference is that, Figure 3 Step S301 can be further refined as follows: Figure 4 Step S3011 in the process.

[0046] In step S3011, the first transmission power configuration and / or the second transmission power configuration are determined based on the configuration information sent by the upstream node or the configuration information obtained by the IAB node itself.

[0047] In some examples, the IAB node receives configuration information from an upstream node and determines a first transmit power configuration and / or a second transmit power configuration based on this information. The upstream node includes a parent IAB node or a CU. Specifically, the parent IAB node or CU can send configuration information to the IAB node via RRC signaling or F1-C signaling.

[0048] The IAB node can also report transmission power reference information to upstream nodes, so that upstream nodes can determine the allocation of power resources between DU and MT units based on the transmission power reference information, and thus send configuration information to the IAB node. Specifically, the transmission power reference information may include, but is not limited to, one or more of the following: the maximum expected transmission power of the DU, the minimum expected transmission power of the DU, the maximum expected transmission power of the MT unit, the minimum expected transmission power of the MT unit, the expected ratio of the maximum transmission power of the DU to the maximum transmission power of the MT unit, the expected difference between the maximum transmission power of the DU and the maximum transmission power of the MT unit, and the maximum transmission power of the IAB node.

[0049] In other examples, the IAB node determines a first transmit power configuration and a second transmit power configuration based on its own acquired configuration information. The IAB node may also report its acquired configuration information to upstream nodes.

[0050] The configuration information in the above embodiments may include, but is not limited to, one or more of the following: maximum transmit power of DU, maximum transmit power of MT unit, ratio of maximum transmit power of DU to maximum transmit power of MT unit, difference between maximum transmit power of DU and maximum transmit power of MT unit, maximum energy per resource element (EPRE) of DU, maximum EPRE of MT unit, ratio of maximum EPRE of DU to maximum EPRE of MT unit, difference between maximum EPRE of DU and maximum EPRE of MT unit, and maximum power spectral density of DU. Spectrum Density (PSD), maximum PSD of MT unit, ratio of maximum PSD of DU to maximum PSD of MT unit, difference between maximum PSD of DU and maximum PSD of MT unit, minimum transmit power of DU, minimum transmit power of MT unit, ratio of minimum transmit power of DU to minimum transmit power of MT unit, difference between minimum transmit power of DU and minimum transmit power of MT unit, minimum EPRE of DU, minimum EPRE of MT unit, ratio of minimum EPRE of DU to minimum EPRE of MT unit, difference between minimum EPRE of DU and minimum EPRE of MT unit, minimum PSD of DU, minimum PSD of MT unit, ratio of minimum PSD of DU to minimum PSD of MT unit, difference between minimum PSD of DU and minimum PSD of MT unit, configured transmit power of DU, configured transmit power of MT unit, ratio of configured transmit power of DU to configured transmit power of MT unit, difference between configured transmit power of DU and configured transmit power of MT unit.

[0051] In some examples, the configuration information determined by the IAB node itself includes the power reference parameters of the parent IAB node, the target received power of the parent IAB node, and the total transmit power of the IAB node. The power reference parameters include Reference Signal Receiving Power (RSRP) or path loss. For example, the MT unit of an IAB node can measure the power reference parameters, target received power, and total transmit power of the parent IAB node, and determine its second transmit power configuration based on these parameters. For instance, a mapping table can be used to establish the relationship between the power reference parameters and the maximum transmit power of the MT unit. This mapping table can be predefined or sent to the IAB node by the CU or the Operation and Maintenance (O&M) server; this is not limited here.

[0052] In some embodiments, the IAB node can control the MT unit to report its Power Headroom (PHR) to the upstream node. The PHR reported to the upstream node is obtained based on the MT unit's second transmit power configuration. For example, the PHR can be the difference or ratio between the MT unit's transmit power and its configured power. The MT unit's configured power can be the maximum transmit power of the MT unit specified in the protocol, the maximum transmit power of the MT unit configured by the upstream node, the maximum transmit power of the MT unit determined by the IAB node itself, or the maximum transmit power of the MT unit reported by the MT unit; it is not limited here.

[0053] In addition, there are multiple configuration powers for the MT unit. Correspondingly, the MT unit can send multiple PHRs to the upstream node, each corresponding to a different configuration power of the MT unit.

[0054] In other embodiments, the transmission priorities of DU and MT units can be specified by protocol or pre-configured. For example, upstream nodes can configure the transmission priorities of DU and MT units via RRC signaling or F1-C signaling. The transmission priority may include the priority of the unit and / or the priority of the transmitted information.

[0055] For example, when the transmission priority includes the priority of the unit, if the priority of DU is higher than the priority of MT unit, then the transmission priority of DU is higher than the transmission priority of MT unit; if the priority of MT unit is higher than the priority of DU, then the transmission priority of MT unit is higher than the transmission priority of DU.

[0056] For example, when the transmission priority includes the priority of the transmitted information, the transmission priority of the DU and MT units is determined based on the relative priorities of the transmitted information from the MT unit and the DU unit. The priority of the transmitted information can be set according to specific working scenarios and requirements, and is not limited here. For example, the transmission information priorities from highest to lowest are: Synchronization Signal Block (SSB) information, Physical Random Access Channel (PRACH) information, Physical Downlink Control Channel (PDCCH) / Physical Uplink Control Channel (PUCCH) information, and Physical Downlink Shared Channel (PDSCH) / Physical Uplink Shared Channel (PUSCH) information. If the DU transmits PRACH information and the MT unit transmits SSB information, then the transmission priority of the MT unit is higher than that of the DU. For example, the information priority of Ultra Reliable & Low Latency Communication (URLLC) services is higher than that of Enhanced Mobile Broadband (eMBB) services. The service types of URLLC and eMBB can be distinguished by higher-layer or physical-layer indications. As another example, if the signal transmitted by the DU unit is a target signal, the target signal has higher priority than non-target signals. Target signals include, but are not limited to, one or more of the following: SSB signals, Common PDCCH signals, UE-specific PDCCH signals, Channel State Information Reference Signals (CSI-RS), and Tracking Reference Signals (TRS). The priority among target signals can also be predefined by the protocol / configured by the control node.

[0057] If the transmission priority of the DU is higher than that of the MT unit, the IAB node prioritizes controlling the DU to transmit information at the transmission power indicated by the first transmission power configuration. The IAB node can also control the MT unit to perform power scaling or discard information. If the MT unit transmits information at the transmission power indicated by the second transmission power configuration, causing the IAB node's RF unit to fail to meet operating requirements, the IAB node controls the MT unit to perform power scaling or discard information. The aforementioned failure to meet operating requirements can be due to a large power difference or power spectral density difference between the MT unit and the DU. For example, if the difference between the total transmission power of the IAB node and the transmission power indicated by the first transmission power configuration is greater than or equal to the transmission power indicated by the second transmission power configuration, the IAB node controls the MT unit to transmit information at the transmission power indicated by the second transmission power configuration. If the difference between the total transmission power of the IAB node and the transmission power indicated by the first transmission power configuration is less than the transmission power indicated by the second transmission power configuration, the IAB node controls the MT unit to perform power scaling or discard information.

[0058] If the transmission priority of the MT unit is higher than that of the DU, the IAB node prioritizes controlling the MT unit to transmit information according to the transmission power indicated by the second transmission power configuration. The IAB node can control the DU to reduce power or discard information. If the DU transmitting information according to the transmission power indicated by the second transmission power configuration causes the IAB node's RF unit to fail to meet the operating requirements, the IAB node controls the DU to reduce power or discard information. The aforementioned failure to meet the operating requirements can be due to a large power difference or power spectral density difference between the MT unit and the DU. For example, if the difference between the total transmission power of the IAB node and the transmission power indicated by the second transmission power configuration is greater than or equal to the transmission power indicated by the first transmission power configuration, the DU is controlled to transmit information according to the transmission power indicated by the first transmission power configuration. If the difference between the total transmission power of the IAB node and the transmission power indicated by the second transmission power configuration is less than the transmission power indicated by the first transmission power configuration, the DU is controlled to reduce power or discard information.

[0059] The transmission priority of target signals and non-target signals can also be determined by the priority of the unit and the priority of the transmitted information. For the transmission of target signals, their transmission priority is determined by the priority of the transmitted information, and the priority of target signals is higher than that of non-target signals. Target signals include, but are not limited to, one or more of the following: SSB signals, Common PDCCH signals, UE-specific PDCCH signals, Channel State Information Reference Signals (CSI-RS), and Tracking Reference Signals (TRS). The priority among target signals can also be predefined by the protocol / configured by the control node. For the transmission of non-target signals, their transmission priority is determined by the priority of the unit.

[0060] Figure 5 This is a flowchart of a transmission power configuration method provided in another embodiment of this application. Figure 5 and Figure 3 The difference is that, Figure 3 The step S302 shown can be further refined as follows: Figure 5 The step S3021 shown.

[0061] In step S3021, the control DU transmits information at the transmission power indicated by the first transmission power configuration during the target time period, and / or the MT unit transmits information at the transmission power indicated by the second transmission power configuration during the target time period.

[0062] The target time period may include, but is not limited to, at least one of the following: the time period during which DU and MT units transmit information simultaneously; the symbols or symbol set occupied by the downlink resources of the DU and the uplink resources of the MT unit in the time domain; the time slot or sub-slot containing the symbols occupied by the downlink resources of the DU and the uplink resources of the MT unit in the time domain; and the time slot set or sub-slot set containing the symbols occupied by the downlink resources of the DU and the uplink resources of the MT unit in the time domain.

[0063] In the above embodiments, after determining the first transmit power configuration of the DU, the downlink (DL) resources of the DU can be configured. After determining the second transmit power configuration of the MT unit, the uplink (UL) resources of the MT unit can be configured. Correspondingly, the DU transmits information in the symbols or symbol set occupied by the configured downlink resources, in the time slots or sub-time slots containing the symbols configured to occupy the downlink resources of the DU, or in the symbol time slot set or sub-time slot set containing the symbol time slot set or sub-time slot set containing the downlink resources of the DU. The MT unit transmits information in the symbols or symbol set occupied by the configured uplink resources, in the time slots or sub-time slots containing the symbols configured to occupy the uplink resources of the MT unit, or in the symbol time slot set or sub-time slot set containing the symbol time slot set or sub-time slot set containing the uplink resources of the MT unit.

[0064] The time slot set includes at least one time slot. The sub-time slot set includes at least one sub-time slot. For example, the time slot set includes several consecutive time slots. The sub-time slot set includes several consecutive sub-time slots.

[0065] For example, the start time and length of the symbols, symbol sets, time slots, sub-time slots, time slot sets, or sub-time slot sets occupied by the downlink resources of a DU can be configured by the upstream node. The start time can be implemented using a relative start time and an offset. The length can be implemented using the number of symbols, time slots, sub-time slots, time slot sets, or sub-time slot sets. Specifically, this can be configured via RRC signaling or F1-C signaling.

[0066] for example, Figure 6 This is a schematic diagram illustrating the time period occupied by downlink resources of a DU as provided in an embodiment of this application. Figure 6 As shown, the relative start time is SFN#0, the offset is offset, and the length is N time slots, from Slot#n+1 to Slot#n+N.

[0067] The time period for configuring the downlink resources of the DU and the uplink resources of the MT unit can control the dynamic range of the transmission power configuration of the DU and MT units in the time domain.

[0068] In some examples, during the time periods specified by the protocol or configured by the upstream node for the downlink resources of the DU and the uplink resources of the MT unit, the DU can be controlled to transmit information at the transmission power indicated by the first transmission power configuration, and the MT unit can be controlled to transmit information at the transmission power indicated by the second transmission power configuration. During other time periods, the transmission power of the DU and the transmission power of the MT unit are not limited by power sharing.

[0069] In some examples, during the time period specified by the protocol or configured by the upstream node for the uplink resources or flexible uplink / downlink resources of the MT unit, the transmit power of the DU is less than or equal to the difference between the maximum transmit power of the IAB and the maximum transmit power of the MT unit. During other time periods, the transmit power of the DU only needs to be less than or equal to the maximum transmit power of the IAB node.

[0070] In the above embodiments, during the time period when the downlink resources of the DU and the uplink resources of the MT are occupied, it is necessary to ensure that the transmission power of the DU and the transmission power of the MT unit remain stable.

[0071] In the above embodiments, if the signal transmitted by the DU is a target signal, the DU may discard the target signal during the target time period. Alternatively, if the signal transmitted by the DU is a target signal, and the transmission power of the target signal is the transmission power indicated by the first transmission power configuration, then the DU transmits the target signal at the transmission power indicated by the first transmission power configuration. The first transmission power configuration includes the power configuration of the target signal and the power configuration of the non-target signal. The power configuration of the target signal and the power configuration of the non-target signal can be independent power configurations or the same power configuration. For example, the transmission power of the target signal can be the transmission power of the DU when using a conventional information transmission method. Alternatively, the transmission power of the target signal can be the maximum transmission power of the DU.

[0072] The target signal is a specified special signal. For example, the target signal may include, but is not limited to, one or more of the following: SSB signal, Common PDCCH signal, UE-specific PDCCH signal, CSI-RS, and TRS.

[0073] In some examples, the IAB node can also report the resource location of the target signal to upstream nodes. The resource location can be a known or potential resource location. It can include time-domain and / or frequency-domain resource locations, but is not limited thereto. Reporting the resource location of the target signal to upstream nodes allows upstream nodes to avoid configuring the MT unit to transmit information when the DU is transmitting the target signal, during power configuration of the IAB node's DU and MT units.

[0074] In some other embodiments, the IAB node may also send power indication information to the terminal device. This power indication information indicates one or more of the following: whether the DU and MT units share the total transmit power of the IAB node, the transmit power of the DU and / or MT units, the difference between the transmit power of the DU and / or MT units and a reference power, the ratio of the transmit power of the DU and / or MT units to the reference power, the difference between the transmit power of the DU and the transmit power of the MT units, and the ratio of the transmit power of the DU to the transmit power of the MT units.

[0075] The reference power can be obtained from the first transmission power configuration of the DU, and is not limited here.

[0076] This power indication information can be carried in power execution signaling. Specifically, the power execution signaling can be physical layer signaling or higher-layer signaling. For example, it can be a Media Access Control Control Element (MAC CE) or Downlink Control Information (DCI), etc., and is not limited here.

[0077] Power indication information can assist terminal equipment in adjusting AGC and help terminal equipment measure reference signals and estimate reference signal quality.

[0078] The transmit power of the DU will vary depending on the scenario. Correspondingly, the terminal device will perform AGC adjustments. To allow the terminal device time to adjust its AGC and avoid affecting communication between the IAB node and the terminal device, the IAB node can set a transition period when switching from the first scenario to the second scenario. This transition period is used for the terminal device communicating with the IAB node to perform AGC adjustments.

[0079] The first scenario may include one of the following: DU sending information and MT unit not transmitting information, DU sending information and MT unit sending information, DU sending information and MT unit receiving information, and DU receiving information and MT unit sending information.

[0080] The second scenario may include one of the following: DU sending information and MT unit not transmitting information, DU sending information and MT unit sending information, DU sending information and MT unit receiving information, and DU receiving information and MT unit sending information.

[0081] However, it should be noted that the first scenario and the second scenario are different.

[0082] The time period corresponding to DU sending information but MT unit not transmitting information is the time period in which DU downlink resources are configured but MT unit resources are not configured. The time period corresponding to DU sending information and MT unit sending information is the time period in which both DU downlink resources and MT unit uplink resources are configured. The time period corresponding to DU sending information and MT unit receiving information is the time period in which both DU downlink resources and MT unit downlink resources are configured. The time period corresponding to DU receiving information and MT unit sending information is the time period in which both DU uplink resources and MT unit uplink resources are configured.

[0083] During the aforementioned transition period, the IAB transmits configuration information or stops transmission. The configuration information is protocol-defined or pre-configured, and is not limited here. For example, the configuration information can be a fixed sequence, information for the next time period, or any information sent by the DU.

[0084] In the above embodiments, the IAB node can also report to the upstream node whether the DU and MT units share the same radio frequency unit. For example, a 1-bit information bit in the message can be used to indicate whether the DU and MT units share the same radio frequency unit.

[0085] This application also provides an IAB node having DU and MT units. Figure 7 This is a schematic diagram of the structure of an IAB node provided in one embodiment of this application. Figure 7 As shown, the AIB node 400 includes a power configuration determination module 401 and a transmission control module 402.

[0086] The power configuration determination module 401 is used to determine the first transmit power configuration of the DU and / or the second transmit power configuration of the MT unit.

[0087] The transmission control module 402 is used to control the DU to transmit information according to the transmission power indicated by the first transmission power configuration, and / or the MT unit to transmit information according to the transmission power indicated by the second transmission power configuration.

[0088] Among them, the sum of the transmission power of DU and the transmission power of MT unit is less than or equal to the maximum transmission power of IAB node.

[0089] In this embodiment, the IAB node determines the first transmit power configuration of the DU and / or the second transmit power configuration of the MT unit, thereby enabling the DU to transmit information according to the transmit power indicated by the first transmit power configuration, and / or controlling the MT unit to transmit information according to the transmit power indicated by the second transmit power configuration. The IAB node can pre-configure the transmit power of the DU and MT units, and the sum of the transmit power of the DU and the transmit power of the MT unit is less than or equal to the maximum transmit power of the IAB node. This achieves power sharing between the DU and MT units in the IAB node, avoids conflicts between the transmit power of the DU and MT units, and thus improves the communication performance of the IAB node.

[0090] Figure 8 This is a schematic diagram of the structure of an IAB node provided in another embodiment of this application. Figure 8 and Figure 7 The difference is that, Figure 8 The IAB node shown may also include a first sending module 403, a second sending module 404, and a priority determination module 405.

[0091] The power configuration determination module 401 in the above embodiments can be specifically used to: determine the first transmission power configuration and / or the second transmission power configuration based on the configuration information sent by the upstream node or the configuration information obtained by the IAB node itself.

[0092] The upstream node includes the parent IAB node or CU.

[0093] The first sending module 403 is used to report the configuration information obtained from the IAB node itself to the upstream node.

[0094] In some examples, the configuration information may include one or more of the following:

[0095] Maximum transmit power of DU, maximum transmit power of MT unit, ratio of maximum transmit power of DU to maximum transmit power of MT unit, difference between maximum transmit power of DU and maximum transmit power of MT unit, maximum capacity per resource unit of DU, maximum capacity per resource unit of MT unit, ratio of maximum capacity per resource unit of DU to maximum capacity per resource unit of MT unit, difference between maximum capacity per resource unit of DU and maximum capacity per resource unit of MT unit, maximum power spectral density of DU, maximum power spectral density of MT unit, ratio of maximum power spectral density of DU to maximum power spectral density of MT unit, difference between maximum power spectral density of DU and maximum power spectral density of MT unit, minimum transmit power of DU, minimum transmit power of MT unit, ratio of minimum transmit power of DU to maximum transmit power of MT unit. The ratio of minimum transmit power of DU to minimum transmit power of MT unit, minimum capacity per resource unit of DU, minimum capacity per resource unit of MT unit, ratio of minimum capacity per resource unit of DU to minimum capacity per resource unit of MT unit, difference of minimum capacity per resource unit of DU to minimum capacity per resource unit of MT unit, minimum power spectral density of DU, minimum power spectral density of MT unit, ratio of minimum power spectral density of DU to minimum power spectral density of MT unit, difference of minimum power spectral density of DU to minimum power spectral density of MT unit, configured transmit power of DU, configured transmit power of MT unit, ratio of configured transmit power of DU to configured transmit power of MT unit, difference of configured transmit power of DU to configured transmit power of MT unit.

[0096] In other examples, the configuration information determined by the IAB node includes the power reference parameters of the parent IAB node, the target received power of the parent IAB node, and the total transmit power of the IAB node. The power reference parameters include either the reference signal received power or the path loss.

[0097] In some examples, the transmission control module 402 in the above embodiments can also be used to control the MT unit to report the power margin PHR to the upstream node.

[0098] The upstream node includes the parent IAB node or CU. The PHR reported to the upstream node is obtained based on the second transmit power configuration of the MT unit.

[0099] The second transmitting module 404 is used to report transmission power reference information to the upstream node.

[0100] The upstream nodes include the parent IAB node or CU.

[0101] In some examples, the transmit power reference information includes one or more of the following:

[0102] Maximum expected transmit power of DU, minimum expected transmit power of DU, maximum expected transmit power of MT unit, minimum expected transmit power of MT unit, expected ratio of maximum transmit power of DU to maximum transmit power of MT unit, expected difference between maximum transmit power of DU and maximum transmit power of MT unit, maximum transmit power of IAB node.

[0103] The priority determination module 405 is used to determine the transmission priority of the DU and MT units.

[0104] If the transmission priority of the DU is higher than that of the MT unit, the transmission control module 402 controls the DU to transmit information according to the transmission power indicated by the first transmission power configuration.

[0105] If the transmission priority of the MT unit is higher than that of the DU, the transmission control module 402 controls the MT unit to transmit information according to the transmission power indicated by the second transmission power configuration.

[0106] In some examples, transmission priority includes the priority of the unit and / or the priority of the transmitted information.

[0107] Correspondingly, if the transmission priority of the DU is higher than that of the MT unit, the transmission control module 402 is also used to control the MT unit to reduce power or discard information.

[0108] Figure 9 This is a schematic diagram of the structure of an IAB node provided in another embodiment of this application. Figure 9 and Figure 7 The difference is that, Figure 9 The IAB node shown may also include a third transmitting module 406 and a fourth transmitting module 407.

[0109] The transmission control module 402 in the above embodiments is specifically used to: control the DU to transmit information according to the transmission power indicated by the first transmission power configuration during the target time period, and / or the MT unit to transmit information according to the transmission power indicated by the second transmission power configuration during the target time period.

[0110] The target time period includes at least one of the following: the time period during which the DU and MT units transmit information simultaneously; the symbols or symbol set occupied by the downlink resources of the DU and the uplink resources of the MT unit in the time domain; the time slot or sub-time slot containing the symbols occupied by the downlink resources of the DU and the uplink resources of the MT unit in the time domain; and the time slot set or sub-time slot set containing the symbols occupied by the downlink resources of the DU and the uplink resources of the MT unit in the time domain.

[0111] If the signal transmitted by the DU is a target signal, the target signal includes one or more of the following: SSB signal, Common PDCCH signal, UE-specific PDCCH signal, CSI-RS, and TRS.

[0112] Specifically, DU discards the target signal during the target time period. Alternatively, the transmission power of the target signal is the transmission power indicated by the first transmission power configuration. The first transmission power configuration includes the power configuration of the target signal and the power configuration of the non-target signal.

[0113] The third transmitting module 406 is used to report the resource location of the target signal to the upstream node, which includes the parent IAB node or CU.

[0114] The fourth transmitting module 407 is used to send power indication information to the terminal device.

[0115] The power indication information is used to indicate one or more of the following: whether the DU and MT units share the total transmit power of the IAB node, the transmit power of the DU and / or MT units, the difference between the transmit power of the DU and / or MT units and the reference power, the ratio of the transmit power of the DU and / or MT units to the reference power, the difference between the transmit power of the DU and the transmit power of the MT units, and the ratio of the transmit power of the DU to the transmit power of the MT units.

[0116] Figure 10 This is a schematic diagram of the structure of an IAB node provided in another embodiment of this application. Figure 8 and Figure 7 The difference is that, Figure 10 The IAB node shown may also include a time period setting module 408 and a fifth sending module 409.

[0117] The time period setting module 408 is used to set a transition time period when switching from the first scene to the second scene. The transition time period is used for the terminal device communicating with the IAB node to perform automatic gain control adjustment.

[0118] The first scenario includes one of the following: the DU sends information but the MT unit does not transmit information; the DU sends information and the MT unit sends information; the DU sends information and the MT unit receives information; or the DU receives information and the MT unit sends information. The second scenario includes one of the following: the DU sends information but the MT unit does not transmit information; the DU sends information and the MT unit sends information; the DU sends information and the MT unit receives information; or the DU receives information and the MT unit sends information. The first and second scenarios are different.

[0119] The fifth sending module 409 is used to transmit setting information or stop information transmission during the transition period.

[0120] Figure 11 A schematic diagram of the hardware structure of a base station to implement the various embodiments of this application is shown. Figure 11 As shown, the base station 500 includes: a memory 501, a processor 502, a radio frequency unit 503, and a computer program stored in the memory 501 and executable on the processor 502. Those skilled in the art will understand that... Figure 11 The structure of the base station shown does not constitute a limitation on the base station. The base station may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0121] The processor 502 is configured to determine a first transmit power configuration of the DU and / or a second transmit power configuration of the MT unit; and to control the DU to transmit transmit power information according to the first transmit power configuration and / or the MT unit to transmit transmit power information according to the second transmit power configuration.

[0122] Among them, Figure 11 In this context, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits together, represented by one or more processors (represented by processor 502) and memory (represented by memory 501). The bus architecture can also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. The radio frequency unit 503 can be multiple elements, including transmitters and transceivers, providing a unit for communicating with various other devices over a transmission medium, for receiving and transmitting data under the control of processor 502. Processor 502 is responsible for managing the bus architecture and general processing, and memory 501 can store data used by processor 502 during operation.

[0123] Preferably, this application embodiment also provides a base station, including a processor 502, a memory 601, and a computer program stored in the memory 501 and executable on the processor 502. When executed by the processor 502, the computer program implements the above-described functions for IAB nodes. Figures 3 to 5 The various processes of the embodiments of the transmission power configuration method shown can achieve the same technical effect, and will not be described again here to avoid repetition.

[0124] This application also provides a computer-readable storage medium storing a computer program. When executed by a processor, this computer program implements the various processes of the above-described embodiments of the transmit power configuration method applied to IAB nodes, and achieves the same technical effects. To avoid repetition, it will not be described again here. The computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0125] The transmission power configuration method, IAB node, base station, and storage medium in the above embodiments can be applied to 5G communication systems and subsequent communication systems, and are not limited thereto.

[0126] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. For the IAB node embodiments, base station embodiments, and computer-readable storage medium embodiments, relevant details can be found in the description section of the method embodiments.

[0127] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0128] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0129] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A method for configuring transmission power, characterized in that, Applied to an integrated access backhaul (IAB) node, wherein the IAB node includes a distributed unit (DU) and a mobile terminal unit (MT), the method includes: The second transmit power configuration of the MT unit is determined based on the configuration information obtained by the IAB node itself. The MT unit is controlled to transmit information according to the transmission power indicated by the second transmission power configuration instruction; wherein the configuration information includes the maximum power spectral density and the minimum power spectral density of the MT unit; The method further includes: The configuration information obtained from the IAB node itself will be reported to the upstream node, which includes the parent IAB node or the central unit CU.

2. The method according to claim 1, characterized in that, Also includes: The MT unit is controlled to report the power margin PHR to the upstream node, which includes the parent IAB node or CU; The PHR reported to the upstream node is obtained based on the second transmit power configuration of the MT unit.

3. The method according to claim 1, characterized in that, Also includes: Report power reference information to upstream nodes, including parent IAB nodes or CUs. The transmission power reference information includes one or more of the following: The maximum expected transmission power of the DU, the minimum expected transmission power of the DU, the maximum expected transmission power of the MT unit, the minimum expected transmission power of the MT unit, the expected ratio of the maximum transmission power of the DU to the maximum transmission power of the MT unit, the expected difference between the maximum transmission power of the DU and the maximum transmission power of the MT unit, and the maximum transmission power of the IAB node.

4. The method according to claim 1, characterized in that, Controlling the MT unit to transmit information according to the transmission power indicated by the second transmission power configuration includes: The MT unit is controlled to transmit information according to the transmission power indicated by the second transmission power configuration during the target time period. The target time period includes at least one of the following: The time period during which the DU and the MT units simultaneously transmit information; The symbols or symbol set occupied by the downlink resources of the DU and the uplink resources of the MT unit are configured in the time domain; In the time domain, it includes the time slots or sub-time slots of symbols occupied by the downlink resources configured for the DU and the uplink resources configured for the MT unit; In the time domain, it includes a set of time slots or sub-time slots containing the symbols occupied by the downlink resources of the DU and the uplink resources of the MT unit.

5. The method according to claim 1, characterized in that, Also includes: Send power indication information to the terminal device. The power indication information is used to indicate one or more of the following: Whether the DU and the MT unit share the total transmit power of the IAB node, the transmit power of the DU and / or the MT unit, the difference between the transmit power of the DU and / or the MT unit and the reference power, the ratio of the transmit power of the DU and / or the MT unit to the reference power, the difference between the transmit power of the DU and the MT unit, and the ratio of the transmit power of the DU to the transmit power of the MT unit.

6. The method according to claim 1, characterized in that, Also includes: When switching from the first scenario to the second scenario, a transition period is set, which is used for the terminal device communicating with the IAB node to perform automatic gain control adjustment. in, The first scenario includes one of the following: the DU sends information and the MT unit transmits no information; the DU sends information and the MT unit sends information; the DU sends information and the MT unit receives information; the DU receives information and the MT unit sends information. The second scenario includes one of the following: the DU sends information and the MT unit transmits no information; the DU sends information and the MT unit sends information; the DU sends information and the MT unit receives information; and the DU receives information and the MT unit sends information. Furthermore, the first scenario and the second scenario are different.

7. The method according to claim 6, characterized in that, Also includes: During the transition period, either setting information or stopping information transmission is performed.

8. An integrated access backhaul (IAB) node, characterized in that, The IAB node has a distributed unit (DU) and a mobile terminal (MT) unit, and the IAB node also includes: The power configuration determination module is used to determine the second transmit power configuration of the MT unit based on the configuration information obtained by the IAB node itself. A transmission control module is used to control the MT unit to transmit information according to the transmission power indicated by the second transmission power configuration, wherein the configuration information includes the maximum power spectral density of the MT unit and the minimum power spectral density of the MT unit; Also includes: The first sending module is used to report the configuration information obtained from the IAB node itself to the upstream node, the upstream node including the parent IAB node or the central unit CU.

9. A base station, characterized in that, It includes a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein the computer program, when executed by the processor, implements the transmit power configuration method as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, A computer program is stored on the computer-readable storage medium, which, when executed by a processor, implements the transmission power configuration method as described in any one of claims 1 to 7.

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