Apparatus, method and computer program for uplink power reduction
By using threshold detection and bitmap mechanisms in the 5G NR spectrum to dynamically adjust the uplink transmission power, the problem of radio link failure caused by the UE approaching the human body was solved, and the stability and throughput of uplink transmission were improved.
Patent Information
- Application Number
- CN202080106168.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-08-13
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2040-08-13
AI Technical Summary
In the 5G NR spectrum, user equipment (UE) may experience radio link failure (RLF) due to reduced uplink power caused by proximity to human bodies. There is a lack of effective mechanisms in the existing technology to manage and restore uplink transmission power to avoid RLF.
By exchanging signaling between user equipment and network devices, threshold detection and bitmap mechanisms are used to identify uplink resources affected by MPE events, and normal operation is restored when the event ends. Uplink transmission power is dynamically adjusted to meet maximum power exposure (MPE) requirements.
It effectively avoids radio link failures, improves network scheduling flexibility, ensures the stability and throughput of uplink transmission, and reduces unnecessary transmission power reduction.
Smart Images

Figure CN116325963B_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to apparatuses, methods, and computer programs, and particularly, but not limited to, apparatuses, methods, and computer programs for use in network devices. Background Technology
[0002] A communication system can be viewed as a facility that enables communication sessions between two or more entities, such as user terminals, access nodes, and / or other nodes, by providing a carrier between the entities involved in the communication path. For example, a communication system can be provided through a communication network and one or more compatible communication devices. A communication session may include, for example, communication of data carrying communications such as voice, email, text messages, multimedia, and / or content data. Content may be multicast or unicast to the communication devices.
[0003] Users can access the communication system through appropriate communication equipment or terminals. The user's communication equipment is typically referred to as user equipment (UE) or user device. The communication equipment can access the carrier provided by the access node and send and / or receive communications on the carrier.
[0004] Communication systems and associated equipment typically operate according to required standards or specifications, which define what the various entities associated with the system are allowed to do and how they should be implemented. The communication protocols and / or parameters that should be used for connectivity are also usually defined. An example of a communication system is UTRAN (3G radio). Another example of a known architecture is Long Term Evolution (LTE) or Universal Mobile Telecommunications System (UMTS) radio access technology. Yet another example of a communication system is so-called 5G radio or New Radio (NR) access technology. Summary of the Invention
[0005] According to a first aspect, an apparatus for a terminal is provided, the apparatus comprising: a component for determining that at least one uplink resource is associated with reduced uplink transmission power; and a component for sending an identification of at least one uplink resource to a network device.
[0006] The device may include a component for receiving configuration information, which configures the device together with the component for determination.
[0007] The component for determining may include: comparing a measured value of at least one parameter with at least one associated threshold for the parameter. At least one of the at least one parameters, a first parameter and a second parameter, may have corresponding first and second thresholds. At least one of the at least one parameters may have associated first and second thresholds, wherein the second threshold corresponds to a reduction in uplink transmission power greater than the first threshold, and wherein: when only the first threshold is exceeded, the component for transmitting may transmit at least one identifier of those uplink resources allocated to terminals for uplink transmission affected by the power reduction; and when both the first and second thresholds are exceeded, the component for transmitting may transmit at least one identifier of those uplink resources not allocated to terminals for uplink resources affected by the power reduction.
[0008] This identifier can be included within a bitmap. The bitmap can identify at least one uplink resource that is not associated with reduced uplink transmission power.
[0009] The device may include components for updating the bitmap based on uplink resource configuration.
[0010] A single identity can be used to identify multiple uplink resources associated with reduced uplink transmission power.
[0011] The apparatus may include a component for sending a cancellation instruction to a network device when the apparatus determines that an event that caused the reduced uplink transmission power has passed.
[0012] The apparatus may include: a component for determining whether the apparatus is scheduled to transmit on at least one resource of a physical uplink shared channel and a physical uplink control channel associated with reduced uplink transmission power; and wherein the component for transmitting may include: a component for transmitting the identifier in response to determining that the apparatus is scheduled to transmit on at least one resource of a physical uplink shared channel or a physical uplink control channel associated with reduced uplink transmission power.
[0013] This indication can provide an identification of the antenna panel on a device configured to transmit on at least one uplink resource.
[0014] According to a second aspect, a network apparatus is provided, the network apparatus comprising: a component for receiving from a terminal an identifier of at least one uplink resource associated with reduced uplink transmission power of the terminal.
[0015] The network device may include a component for transmitting configuration information that configures the device to determine that at least one uplink resource is associated with reduced uplink transmission power.
[0016] Configuration information may include comparing a measurement of at least one parameter with at least one associated threshold for that parameter.
[0017] At least the first parameter and the second parameter in the at least one parameter may have corresponding first thresholds and second thresholds.
[0018] One of the at least one parameters may have at least an associated first threshold and a second threshold, wherein the second threshold corresponds to a reduction in uplink transmission power that is greater than the first threshold, and wherein: when only the first threshold is exceeded, the receiving component may receive at least one identifier of those uplink resources allocated to the terminal for uplink transmission affected by the power reduction; and when both the first threshold and the second threshold are exceeded, the receiving component may receive at least one identifier of those uplink resources not allocated to the terminal for uplink resources affected by the power reduction.
[0019] The identifier can be included within a bitmap.
[0020] This bitmap can identify at least one uplink resource that is not associated with reduced uplink transmission power.
[0021] A single identity can be used to identify multiple uplink resources associated with reduced uplink transmission power.
[0022] The network apparatus may include a component for receiving from a terminal a cancellation indication that an event causing reduced uplink transmission power has passed. This indication may provide an identifier on an antenna panel of an apparatus configured to transmit on at least one uplink resource.
[0023] According to a third aspect, a method for an apparatus for a terminal is provided, the method comprising: determining that at least one uplink resource is associated with reduced uplink transmission power; and sending an identifier of at least one uplink resource to a network apparatus.
[0024] The method may include receiving configuration information, which utilizes the determination to configure the device.
[0025] The determination may include comparing a measured value of at least one parameter with at least one associated threshold for that parameter. At least a first parameter and a second parameter of the at least one parameter may have corresponding first and second thresholds. One of the at least one parameters may have at least one associated first and second threshold, wherein the second threshold corresponds to a reduction in uplink transmission power greater than the first threshold, and wherein: when only the first threshold is exceeded, the transmission may transmit at least one identifier of those uplink resources allocated to terminals for uplink transmissions affected by the power reduction; and when both the first and second thresholds are exceeded, the transmission may transmit at least one identifier of those uplink resources not allocated to terminals for uplink resources affected by the power reduction.
[0026] This identifier can be included within a bitmap. The bitmap can identify at least one uplink resource that is not associated with reduced uplink transmission power.
[0027] This method may include updating the bitmap based on uplink resource configuration.
[0028] A single identity can be used to identify multiple uplink resources associated with reduced uplink transmission power.
[0029] The method may include sending a cancellation instruction to the network device when the device determines that the event that caused the reduced uplink transmission power has passed.
[0030] The method may include: determining whether the device is scheduled to transmit on at least one resource of a physical uplink shared channel and a physical uplink control channel associated with reduced uplink transmission power; and wherein the transmission may include: transmitting the identifier in response to determining that the device is scheduled to transmit on at least one resource of a physical uplink shared channel or a physical uplink control channel associated with reduced uplink transmission power.
[0031] This indication can provide an identification of the antenna panel on a device configured to transmit on at least one uplink resource.
[0032] According to a fourth aspect, a method for a network apparatus is provided, the method comprising: receiving from a terminal an identifier of at least one uplink resource associated with reduced uplink transmission power of the terminal.
[0033] The method may include sending configuration information that configures the device to determine that at least one uplink resource is associated with reduced uplink transmission power.
[0034] Configuration information may include comparing a measurement of at least one parameter with at least one associated threshold for that parameter.
[0035] At least the first parameter and the second parameter in the at least one parameter may have corresponding first thresholds and second thresholds.
[0036] One of the at least one parameters may have at least one associated first threshold and one second threshold, wherein the second threshold corresponds to a reduction in uplink transmission power greater than the first threshold, and wherein: when only the first threshold is exceeded, the receiver may receive at least one identifier of those uplink resources allocated to the terminal for uplink transmission affected by the power reduction; when both the first threshold and the second threshold are exceeded, the receiver may receive at least one identifier of those uplink resources not allocated to the terminal for uplink resources affected by the power reduction.
[0037] This identifier can be included within a bitmap.
[0038] This bitmap can identify at least one uplink resource that is not associated with reduced uplink transmission power.
[0039] A single identity can be used to identify multiple uplink resources associated with reduced uplink transmission power.
[0040] The method may include receiving from the terminal a cancellation indication that an event causing reduced uplink transmission power has passed. This indication may provide an identifier of an antenna panel on a device configured to transmit on at least one uplink resource.
[0041] According to a fifth aspect, an apparatus for a terminal is provided, the apparatus including at least one processor and at least one memory, the memory including code that, when executed by the at least one processor, causes the terminal to: determine that at least one uplink resource is associated with reduced uplink transmission power; and send an identifier of the at least one uplink resource to a network device.
[0042] The terminal can receive configuration information that configures the device together with the components used for determination.
[0043] The determination may include comparing a measured value of at least one parameter with at least one associated threshold for that parameter. At least a first parameter and a second parameter of the at least one parameter may have corresponding first and second thresholds. One of the at least one parameters may have at least one associated first and second threshold, wherein the second threshold corresponds to a reduction in uplink transmission power greater than the first threshold, and wherein: when only the first threshold is exceeded, the transmission may transmit at least one identifier of those uplink resources allocated to terminals for uplink transmissions affected by the power reduction; and when both the first and second thresholds are exceeded, the transmission may transmit at least one identifier of those uplink resources not allocated to terminals for uplink resources affected by the power reduction.
[0044] This identifier can be included within a bitmap. The bitmap can identify at least one uplink resource that is not associated with reduced uplink transmission power.
[0045] It allows the terminal to update the bitmap based on the uplink resource configuration.
[0046] A single identity can be used to identify multiple uplink resources associated with reduced uplink transmission power.
[0047] When the device determines that the event that caused the reduced uplink transmission power has passed, the terminal can send a cancellation instruction to the network device.
[0048] The terminal may determine whether the device is scheduled to transmit on at least one resource of the Physical Uplink Shared Channel and the Physical Uplink Control Channel associated with reduced uplink transmission power; and the transmission may include transmitting the identifier in response to determining that the device is scheduled to transmit on at least one resource of the Physical Uplink Shared Channel or the Physical Uplink Control Channel associated with reduced uplink transmission power.
[0049] This indication can provide an identification of the antenna panel on a device configured to transmit on at least one uplink resource.
[0050] According to a sixth aspect, a network apparatus is provided, the network apparatus including at least one processor and at least one memory, the memory including code that, when executed by the at least one processor, causes the network apparatus to: receive from a terminal an identifier of at least one uplink resource associated with reduced uplink transmission power of the terminal.
[0051] A network device can send configuration information that configures the device to determine that at least one uplink resource is associated with reduced uplink transmission power.
[0052] Configuration information may include comparing a measurement of at least one parameter with at least one associated threshold for that parameter.
[0053] At least the first parameter and the second parameter of the at least one parameter may have corresponding first thresholds and second thresholds.
[0054] One of the at least one parameters may have at least an associated first threshold and a second threshold, wherein the second threshold corresponds to a reduction in uplink transmission power that is greater than the first threshold, and wherein: when only the first threshold is exceeded, the receiver may receive at least one identifier of those uplink resources allocated to the terminal for uplink transmission affected by the power reduction; when both the first threshold and the second threshold are exceeded, the receiver may receive at least one identifier of those uplink resources not allocated to the terminal for uplink resources affected by the power reduction.
[0055] The identifier can be included within a bitmap.
[0056] This bitmap can identify at least one uplink resource that is not associated with reduced uplink transmission power.
[0057] A single identity can be used to identify multiple uplink resources associated with reduced uplink transmission power.
[0058] A cancellation indication can be received from a terminal indicating that an event causing reduced uplink transmission power has passed. This indication can provide an identifier of the antenna panel on a device configured to transmit on at least one uplink resource.
[0059] According to the seventh aspect, a non-transitory computer-readable medium is provided, comprising program instructions for causing a terminal to perform at least the following: determining that at least one uplink resource is associated with reduced uplink transmission power; and sending an identifier of at least one uplink resource to a network device.
[0060] The terminal can receive configuration information that configures the device using the components to be determined.
[0061] The determination may include comparing a measured value of at least one parameter with at least one associated threshold for that parameter. At least a first parameter and a second parameter of the at least one parameter may have corresponding first and second thresholds. One of the at least one parameters may have at least one associated first and second threshold, wherein the second threshold corresponds to a reduction in uplink transmission power greater than the first threshold, and wherein: when only the first threshold is exceeded, the transmission may transmit at least one identifier of those uplink resources allocated to terminals for uplink transmissions affected by the power reduction; and when both the first and second thresholds are exceeded, the transmission may transmit at least one identifier of those uplink resources not allocated to terminals for uplink resources affected by the power reduction.
[0062] This identifier can be included within a bitmap. The bitmap can identify at least one uplink resource that is not associated with reduced uplink transmission power.
[0063] It allows the terminal to update the bitmap based on the uplink resource configuration.
[0064] A single identity can be used to identify multiple uplink resources associated with reduced uplink transmission power.
[0065] When the device determines that the event that caused the reduced uplink transmission power has passed, the terminal can send a cancellation instruction to the network device.
[0066] The terminal may determine whether the device is scheduled to transmit on at least one resource of the Physical Uplink Shared Channel and the Physical Uplink Control Channel associated with reduced uplink transmission power; and the transmission may include transmitting the identifier in response to determining that the device is scheduled to transmit on at least one resource of the Physical Uplink Shared Channel or the Physical Uplink Control Channel associated with reduced uplink transmission power.
[0067] This indication can provide an identification of the antenna panel on a device configured to transmit on at least one uplink resource.
[0068] According to the eighth aspect, a non-transient computer-readable medium including program instructions is provided for causing a network device to perform at least the following: receiving from a terminal an identifier of at least one uplink resource associated with reduced uplink transmission power of the terminal.
[0069] A network device can send configuration information that configures the device to determine that at least one uplink resource is associated with reduced uplink transmission power.
[0070] Configuration information may include comparing a measurement of at least one parameter with at least one associated threshold for that parameter.
[0071] At least the first parameter and the second parameter in the at least one parameter may have corresponding first thresholds and second thresholds.
[0072] One of the parameters may have an associated first threshold and a second threshold, wherein the second threshold corresponds to a reduction in uplink transmission power greater than the first threshold, and wherein: when only the first threshold is exceeded, the receiver may receive at least one identifier of those uplink resources allocated to the terminal for uplink transmission affected by the power reduction; when both the first threshold and the second threshold are exceeded, the receiver may receive at least one identifier of uplink resources not allocated to the terminal for uplink resources affected by the power reduction.
[0073] This identifier can be included within a bitmap.
[0074] This bitmap can identify at least one uplink resource that is not associated with reduced uplink transmission power.
[0075] A single identity can be used to identify multiple uplink resources associated with reduced uplink transmission power.
[0076] A cancellation indication can be received from a terminal indicating that an event causing reduced uplink transmission power has passed. This indication can provide an identifier of the antenna panel on a device configured to transmit on at least one uplink resource.
[0077] According to a ninth aspect, an apparatus for a terminal is provided, the apparatus comprising: a determining circuit for determining that at least one uplink resource is associated with reduced uplink transmission power; and a transmitting circuit for transmitting an identifier of at least one uplink resource to a network device.
[0078] The device may include a receiving circuit for receiving configuration information, which configures the device using the determining circuit.
[0079] The determining circuit may include: comparing a measured value of at least one parameter with at least one associated threshold for that parameter. At least a first parameter and a second parameter of the at least one parameter may have corresponding first and second thresholds. One of the at least one parameters may have at least one associated first and second threshold, wherein the second threshold corresponds to a reduction in uplink transmission power greater than the first threshold, and wherein: when only the first threshold is exceeded, the transmitting circuit may transmit at least one identifier of those uplink resources allocated to terminals for uplink transmission affected by the power reduction; and when both the first and second thresholds are exceeded, the transmitting circuit may transmit at least one identifier of uplink resources not allocated to terminals for uplink resources affected by the power reduction.
[0080] This identifier can be included within a bitmap. The bitmap can identify at least one uplink resource that is not associated with reduced uplink transmission power.
[0081] The device may include update circuitry for updating a bitmap based on uplink resource configuration.
[0082] A single identity can be used to identify multiple uplink resources associated with reduced uplink transmission power.
[0083] The device may include transmitting circuitry for sending a cancellation instruction to the network device when the device determines that an event that caused reduced uplink transmission power has passed.
[0084] The apparatus may include determining circuitry for determining whether the apparatus is scheduled to transmit on at least one resource of a physical uplink shared channel and a physical uplink control channel associated with reduced uplink transmission power; and wherein the transmitting circuitry may include transmitting circuitry for transmitting the identifier in response to determining that the apparatus is scheduled to transmit on at least one resource of a physical uplink shared channel or a physical uplink control channel associated with reduced uplink transmission power.
[0085] This indication can provide an identification of the antenna panel on a device configured to transmit on at least one uplink resource.
[0086] According to a tenth aspect, a network apparatus is provided, the network apparatus comprising: a receiving circuit for receiving from a terminal an identifier of at least one uplink resource associated with reduced uplink transmission power of the terminal.
[0087] The network device may include transmitting circuitry for transmitting configuration information that configures the device to determine at least one uplink resource associated with reduced uplink transmission power.
[0088] Configuration information may include comparing a measurement of at least one parameter with at least one associated threshold for that parameter.
[0089] At least the first parameter and the second parameter of the at least one parameter may have corresponding first thresholds and second thresholds.
[0090] One of the at least one parameters may have at least an associated first threshold and a second threshold, wherein the second threshold corresponds to a reduction in uplink transmission power that is greater than the first threshold, and wherein: when only the first threshold is exceeded, the receiving circuit may receive at least one identifier of those uplink resources allocated to terminals for uplink transmission affected by the power reduction; and when both the first threshold and the second threshold are exceeded, the receiving circuit may receive at least one identifier of those uplink resources not allocated to terminals for uplink resources affected by the power reduction.
[0091] This identifier can be included within a bitmap.
[0092] This bitmap can identify at least one uplink resource that is not associated with reduced uplink transmission power.
[0093] A single identity can be used to identify multiple uplink resources associated with reduced uplink transmission power.
[0094] The network device may include receiving circuitry for receiving from a terminal a cancellation indication that an event causing reduced uplink transmission power has passed. This indication may provide an identifier of an antenna panel on a device configured to transmit on at least one uplink resource.
[0095] According to the eleventh aspect, a computer program is provided, including program instructions for causing a computer to perform any of the methods described above.
[0096] According to the twelfth aspect, a computer program product stored on a medium is provided, which can cause the device to perform any of the methods described above.
[0097] According to the thirteenth aspect, an electronic device is provided that may include the means as described herein.
[0098] According to the fourteenth aspect, a chipset is provided that may include the means as described herein.
[0099] Various other aspects are also described in the following detailed description and the appended claims. Attached Figure Description
[0100] Embodiments will now be described by way of example only, with reference to the accompanying drawings, in which:
[0101] Figure 1 A schematic diagram of a 5G system is shown;
[0102] Figure 2 A schematic diagram of a network device is shown;
[0103] Figure 3 A schematic diagram of the user equipment is shown;
[0104] Figure 4 A schematic diagram of a non-volatile storage medium is shown, which stores instructions that, when executed by a processor, allow the processor to perform one or more steps of a method of some embodiments;
[0105] Figure 5 A signaling diagram illustrating the potential messages that may be exchanged is shown; and
[0106] Figure 6 and Figure 7 A flowchart illustrating the potential operation of the device. Detailed Implementation
[0107] In the following explanation, certain embodiments are described with reference to mobile communication devices capable of communicating via wireless cellular systems and mobile communication systems served by such mobile communication devices. Before explaining the exemplary embodiments in detail, refer to... Figure 1 Briefly explain some general principles of 5G wireless communication systems.
[0108] Figure 1 A schematic diagram of a 5G system (5GS) 100 is shown. The 5GS may include a user equipment (UE) 102 (which may also be referred to as a communication device or terminal), a 5G access network (AN) (which may be a 5G radio access network (RAN) or any other type of 5G AN, non-3GPP interoperability function (N3IWF) / trusted non-3GPP gateway function (TNGF) for untrusted / trusted non-3GPP access or wired access gateway function (W-AGF) for wired access) 104, a 5G core (5GC) 106, one or more application functions (AF) 108, and one or more data networks (DN) 110.
[0109] A 5G RAN may include one or more gNodeB (GNB) distributed unit functions connected to one or more gNodeB (GNB) centralized unit functions. The RAN may include one or more access nodes.
[0110] 5GC 106 may include one or more Access Management Functions (AMF) 112, one or more Session Management Functions (SMF) 114, one or more Authentication Server Functions (AUSF) 116, one or more Unified Data Management (UDM) Functions 118, one or more User Plane Functions (UPF) 120, one or more Unified Data Repository (UDR) Functions 122, one or more Policy Control Functions (PCF) 128, and / or one or more Network Exposure Functions (NEF) 124. While the interface of PCF 128 is not described, it is understood that, for clear reasons, PCF 126 may have multiple interfaces with other network functions, such as AMF 112 (via interface N15), SMF 114 (via interface N7), UDR 122 (via interface N36), Network Data Analysis Function (NWDAF) 126 (via interface N23), and many other network functions.
[0111] 5GC 106 also includes a Network Data Analysis Function (NWDAF) 126. The NWDAF is responsible for providing network analysis information based on requests from one or more network functions or devices within the network. Network functions can also subscribe to the NWDAF 126 to receive information from it. Therefore, the NWDAF 126 is also configured to receive and store network information for one or more network functions or devices within the network. Data collection performed by the NWDAF 126 can be performed based on at least one subscription to an event provided by at least one network function.
[0112] The number of online services is increasing significantly every year, and the demand for bandwidth is increasing accordingly. Millimeter wave (mmW) spectrum can be used to provide additional bandwidth, offering the possibility of using a large portion of the continuous bandwidth to address high-throughput applications. Therefore, the goal of fifth-generation (5G) new radio (NR) spectrum is to extend wavelengths far beyond the range of the previous fourth-generation (4G) spectrum (400MHz to 6GHz – also known as Frequency Range 1 (FR1)). This bandwidth extension can be referred to as Frequency Range 2 (FR2). In current proposals for millimeter wave 5G NR, FR2 can include frequencies between 24GHz and 52.6GHz. Currently, NR operation is being extended to the 52.6-71GHz range, as discussed in 3GPP Rel17.
[0113] Operating a high-gain antenna at such high frequencies raises concerns about user health. Since frequencies below 100 GHz are non-ionizing, health concerns are limited to the heat generated when absorbing electromagnetic mmW energy to body tissues, and the penetration depth at mmW frequencies is less than 1 mm. Therefore, potential thermal damage is limited to the surface of the skin and eyes. At 42 GHz, most of the energy is absorbed within the first 0.4 mm of human skin.
[0114] To address these concerns, standards exist for mmW mechanisms that specify and regulate the maximum power a user equipment (UE) may transmit. Furthermore, in many jurisdictions, governments have established exposure guidelines to prevent health problems due to thermal effects. Below 6 GHz (e.g., LTE), Specific Absorption Rate (SAR) has been used to determine exposure thresholds. SAR measures the energy absorbed by the human body when exposed to an electromagnetic field. In the US, the FCC sets an average SAR limit of 1.6 W / kg on 1g of tissue. In Europe, the average SAR limit is 2 W / kg on 10g of tissue. The 1g average provides finer resolution for studying energy absorption in the human body.
[0115] In mmW (mmW) conditions with a penetration depth of less than 1 mm, even 1 gram of tissue represents a large volume, requiring precise measurement. Because it is difficult to define a meaningful volume for SAR assessment, it is generally accepted to use power density (PD) instead of SAR to set exposure limits at mmW frequencies. PD is a planar energy distribution, not a volumetric distribution like SAR. The Maximum Permissible Exposure (MPE) is the PD specification for mmWave schemes. For the general public, the FCC and ICNIRP set the MPE threshold at 10 W / m² (1 mW / cm²), between 6 GHz and 10 GHz and 100 GHz, respectively. The energy absorbed by the human body increases with distance from the UE. Therefore, to comply with MPE limits, the UE may have to reduce its output power if the user is close to the antenna.
[0116] Because some 5G NR bands operate at very high frequencies (FR2 and above), they require high-gain antennas to maintain the link budget. However, high-gain antennas direct a significant amount of energy toward the user, and the FCC protects users by setting an MPE threshold. The UE follows the MPE limit, reducing its output power for uplink transmission if it determines that a user is approaching the antenna. This reduction in output power (at least 20 dB for an incoming UE) can cause the UE to lose connection with the base station (gNB) (i.e., a radio link failure (RLF) event may occur).
[0117] In 3GPP, two methods have been used and discussed to address reducing the uplink power output of UEs: maximum uplink duty cycle (maxUplinkDutyCycle) and P-PMR.
[0118] For the maximum uplink duty cycle, a duty cycle is defined that allows the UE to maintain its maximum transmit power while still meeting MPE requirements. This is done by averaging the power output over a defined time period, causing some transmissions within that period to be output as "normal" transmissions, while other transmissions planned for that period are suppressed. The average power over this time period will satisfy the MPE limit. For example, the duty cycle value in FR1 can have a default value of 50%, optionally with reported values of 60%, 70%, 80%, 90%, and 100%, and the average time / duty cycle observation period is typically seconds / minutes, depending on the system. Dynamic duty cycle will not be introduced in Rel-16. Instead, it is currently a fixed capability indicated using RRC signaling. However, this may not be the case for future versions and other network types (i.e., non-5G networks).
[0119] For Power Management Maximum Power Reduction (PMPR), the UE can reduce the maximum available uplink power applied to all uplink transmissions to meet transmission requirements. The UE can detect when to apply power reduction based on its own judgment; for example, when the UE detects a human approaching, the transmission power on the uplink will be reduced. Therefore, on the device side, there may be available proximity sensors built into the device to detect nearby objects, including humans. These components can be implemented in various ways, including 60 GHz radar. Based on the proximity sensor, the device can autonomously reduce its transmission power to meet MPE requirements.
[0120] Enhanced solutions to the FR2 MPE problem have been considered. In a recent meeting, it was agreed to consider further reporting on the applied P-MPR values and duty cycle values, and extensive discussions were held on how to implement RF exposure compliance mechanisms in the specification (i.e., in 3GPP Technical Specification 38.101-2).
[0121] When reporting P-MPR, periodic P-MPR reports will not be introduced. Instead, a report will be triggered when the P-MPR exceeds a threshold (which may be configurable). The signaling mechanism for triggering the report has not yet been discussed (e.g., as an extension of currently defined signals / messages, via a new reporting message, etc.). However, it has been agreed to introduce a P-MPR reporting value mapping table in 3GPP Technical Specification 38.133.
[0122] Secondly, as mentioned above, dynamic duty cycle will not be introduced in Rel-16.
[0123] Beam-based operation potentially allows for the use of multiple paths or beam pairs for communication, where a beam pair refers to the transmit beam at the transmitter and the receive beam at the receiver of a radio link between two nodes (e.g., between a UE and a gNB). Therefore, duty cycle-based MPE actions can be avoided by using beam / path diversity for uplink transmissions. This arrangement improves scheduling flexibility at the network level and avoids unnecessarily limiting uplink throughput outside of MPE events. This arrangement (i.e., beam / path diversity) can also be an improvement over reduced transmission power to meet transmission requirements.
[0124] The following considerations take into account that when a potential alternative path / beam exists, it would be useful for the UE to indicate this to the network to avoid the UE reducing the UL transmission power beyond what is necessary and to avoid potential radio link failures. It would also be useful for the UE to mitigate beam failures when no potential alternative path / beam exists.
[0125] In particular, the following considers the mechanism by which the UE indicates to the network when experiencing an MPE scenario, and will operate under transmission power limited together with the currently configured communication beams for the uplink. Specifically, mechanisms for identifying specific uplink transmission resources affected by MPE and / or for identifying specific uplink transmission resources unaffected by MPE are considered below. Furthermore, mechanisms for quickly resuming normal operation when the MPE scenario has ceased are considered below to avoid applying gNB uplink scheduling restrictions when no longer needed.
[0126] Figure 5 This is a signaling diagram illustrating the proposed mechanism, and it shows the signals exchanged between user equipment 51 and network device 52.
[0127] At 501, network device 52 sends a signal to user equipment 51, the signal including a configuration for configuring the UE to detect and / or report MPE events.
[0128] This configuration can include at least one threshold, and if this threshold is exceeded, the UE can be triggered to report an MPE event. For example, with the threshold configured as TH1, the threshold TH1 can be configured for any entry / bit position in the bitmap so that when the maximum power reduction (MPR) applied by the UE 51 for the resource indicated by that bitmap position exceeds TH1, an event is triggered, and that bit is set to indicate the event for the affected resource. When the MPR applied by the UE is less than TH1, the UE 51 can be configured via signaling to cancel the event and trigger a new report.
[0129] In any additional MPE-related reports, the UE can be configured to use the same threshold. This can be useful when reporting candidate resources that are not affected by MPE, such as when reporting candidate synchronization signal (SS) / physical broadcast channel (PBCH) block resources.
[0130] UE 51 can be configured to use a second threshold (TH2) via signaling at 501. This second threshold TH1 can be applied when UE 51 reports a cancellation MPE event. TH2 can be set to be higher than TH1.
[0131] Understandably, although MPR has been mentioned above as being used for threshold triggering, other values can also be used, such as a threshold for the maximum uplink power. Furthermore, multiple thresholds can be configured at UE 51 via signals from network device 52. These thresholds can be applied simultaneously (e.g., if any threshold exceeds a configured threshold, an event is detected (and subsequently reported)). These thresholds can also be applied sequentially (e.g., so that one threshold is applied until it is exceeded, and then a second, different threshold is used after the threshold is exceeded).
[0132] At position 502, after configuring itself to detect MPE events based on the received configuration, the UE detects the MPE event. This can be done by using a threshold, as described above.
[0133] At 503, UE 51 determines to send an indication to network device 52 indicating which resources are affected by the MPE event. This indication is sent to network device 52 at 504. This indication can be explicit. One way to effectively indicate resources affected by the MPE event is through one or more Transport Configuration Indicator (TCI) states affected by the MPE event. At least one TCI state is dynamically provided to the UE (e.g., via downlink control information messages) and includes a configuration such as the quasi-co-location relationship between downlink reference signals in a channel state information reference signal set and physical downlink shared channel demodulation reference signal ports. Therefore, the indication sent at 503 can include an identifier of at least one TCI state affected by the MPE event.
[0134] Optionally, before or as part of sending the indication in 504, UE 51 may signal to the network to request resources for reporting MPE events. For example, a scheduling request and / or preamble-based signaling may be used to indicate that an MPE event has occurred, and UE 51 may request additional resources to provide supplementary MPE-related information. This additional MPE-related information may be delivered using various signaling channels and mechanisms. For example, additional MPE-related information may be sent by UE 51 to network device 52 using the Physical Uplink Control Channel (PUCCH), the Physical Uplink Shared Channel (PUSCH), via the Media Access Control Control Element (MACCE), and / or via Radio Resource Control signaling.
[0135] At point 505, after receiving the instruction sent at point 504, the network device makes a network planning decision to account for the MPE event and the affected resources. An example of how this is implemented is discussed below.
[0136] UE 51 can cancel reporting events under at least one of several conditions. For example, UE 51 can cancel reporting events when configuring new uplink resources, and / or after receiving an indication that the UE may not expect network devices to schedule it on specific resources, and / or when the UE is allowed to ignore UL grants (e.g., periodic grants on resources). As an example, when the UE expects network devices to schedule it to transmit uplinks and assumes the UE may need to mitigate MPE on these uplink resources, the event can be considered triggered or pending without cancellation. In other words, the UE can be configured to report at least once (e.g., once, periodically, or N times) when the UE determines that an MPE event has occurred or provides new information. As another example, the UE can stop periodically reporting (e.g., when MPE restrictions no longer apply), or the UE can be configured to report whenever the MPE situation changes, such as when new resources are affected or when some resources / beams / links are no longer affected. The network device can also explicitly cancel the UE's reporting of MPE events by signaling the UE to configure the UE to stop reporting MPE events.
[0137] Figure 6 and Figure 7 This is a flowchart illustrating the potential operations that can be performed by the aforementioned interactive device.
[0138] Figure 6 The potential operations performed by the device at the terminal are shown.
[0139] At 601, the device determines that at least one uplink resource is associated with reduced uplink transmission power. This can be determined in response to a terminal determining that it needs to comply with MPE requirements. Therefore, the identifier indicates the specific resource associated with the reduced uplink transmission power. When the identifier is received, the specific resource can be allocated to the terminal used for uplink transmission. When the identifier is received, the specific resource may not be allocated to the terminal used for uplink transmission.
[0140] The terminal can be configured to determine how to meet MPE requirements via signaling received from the network device. This configuration signaling can configure the terminal with at least one threshold associated with at least one parameter. This parameter could be, for example, maximum power reduction and / or other parameters discussed herein. The determination can include comparing a measured value of the at least one parameter with the threshold and taking action based on whether the threshold is met and / or exceeded. For example, when the threshold is met and / or exceeded, the terminal can determine that the MPE requirement must be met. The terminal can be configured to perform the measurement itself. The determination of whether a specific MPE requirement needs to be met can also be made internally by the terminal. The terminal can report to the network device that it cannot use a specific resource without reducing maximum power. The terminal can indicate the reduction amount to the network device, causing it to explicitly signal the value. It can be assumed that the reduction amount is a specific / default value known to both the network device and the terminal (e.g., the default reduction amount is predetermined). In the latter case, the terminal does not explicitly signal the reduction amount to the network device.
[0141] There may be at least a first parameter and a second parameter in at least one parameter, each having a corresponding first threshold and a second threshold.
[0142] One of the at least one parameters may have at least one associated first threshold and one second threshold. The second threshold may correspond to a reduction in uplink transmission power greater than the first threshold. When only the first threshold is exceeded, the transmission may send at least one identifier (also referred to herein as a passive report) of those uplink resources allocated to the terminal for uplink transmissions affected by the power reduction. When both the first and second thresholds are exceeded, the terminal may send at least one identifier (also referred to herein as an active report) of those uplink resources not currently allocated to the terminal for uplink resources affected by the power reduction.
[0143] At 602, the device sends an identifier of at least one uplink resource to the network device. This identifier may be included in a bitmap. The bitmap may identify at least one uplink resource that is not associated with (i.e., unaffected) the reduced uplink resource. A single identifier can be used to identify multiple uplink resources associated with reduced uplink transmission power. For example, network devices and terminals may generally be considered quasi-co-located resources / channels, forming a set that can be represented by an indication of one of the quasi-co-located resources / channels. A resource / channel may generally be considered quasi-co-located after the network device signals this quasi-co-location to the terminal.
[0144] When the device determines that the event that caused the reduced uplink transmission power has passed, the device can cause the terminal to send a cancellation instruction to the network device. Therefore, the cancellation instruction can indicate to the network that the uplink resources allocated to the terminal are currently not subject to transmission power throttling / reduction.
[0145] Figure 7 This explains that it can be derived from and Figure 6 This refers to the potential actions performed by network devices that interact with each other. A network device can be a network access point, such as a gNB or equivalent device.
[0146] In step 701, the network device receives from the terminal an identifier of at least one uplink resource associated with a reduced uplink transmission power of the terminal. Therefore, the identifier indicates a specific resource associated with the reduced uplink transmission power. When the identifier is received (a passive report from the terminal), the specific resource may be allocated to the terminal for uplink transmission. When the identifier is received (an active report from the terminal), the specific resource may not be allocated to the terminal for uplink transmission.
[0147] As described above, how the terminal determines whether to meet the MPE requirements can be configured via signaling sent to the terminal by the network device. This configuration signaling may include at least one threshold associated with at least one parameter. This parameter may be, for example, maximum power reduction and / or other parameters discussed herein.
[0148] There may be at least a first parameter and a second parameter, each having a corresponding first threshold and a second threshold.
[0149] At least one of the parameters may have an associated first threshold and a second threshold. The second threshold may correspond to a reduction in uplink transmission power greater than the first threshold. When only the first threshold is exceeded, the transmission may send at least one identifier of those uplinks allocated to the terminal for uplink transmissions affected by the power reduction. This is part of the described passive reporting. When both the first and second thresholds are exceeded, the terminal may send identifiers of at least those uplink resources not currently allocated to the terminal for uplink resources affected by the power reduction. This is part of the described active reporting.
[0150] The network device can receive a cancellation instruction from the terminal. The cancellation instruction can indicate to the network device that the uplink resources allocated to the terminal are currently not subject to transmission power throttling / reduction.
[0151] The following will consider a more specific example of the technology described herein, wherein the UE is configured to indicate an MPE event and / or cancel the indicated MPE event. This can be performed actively (i.e., by controlling the MPE component) or passively (i.e., in response to an MPE event occurring).
[0152] First, the UE will determine and send resource-specific information indicating an MPE event to the network device.
[0153] As a first example, the transmitted indication is based on the Synchronization Signal (SS) / Physical Broadcast Channel (PBCH) block, referred to as the SSB, and / or the Channel State Information Reference Signal (CSI-RS) resource.
[0154] In LTE, all eNodeBs continuously transmit a reference signal (CRS) for a specific cell, enabling the UE to measure the cell quality of neighboring cells. This CRS is not present in 5G NR. Instead, in 5G NR, the UE performs cell signal measurements using SSBs. These SSBs consist of a synchronization signal (SS) and a physical broadcast channel (PBCH), and their transmission period is longer than that of the LTE CRS.
[0155] Therefore, this example can use SSB and / or CSI-RS identifiers to represent a specific resource. This can be used in conjunction with the concept of Quasi-Co-location (QCL). In QCL, the properties of a channel transmitting symbols on one antenna port can be inferred from the properties of a channel transmitting symbols on another antenna port. Therefore, if the first channel is affected by an MPE event, the quasi-co-location source of that channel will also be affected.
[0156] In this example, the SSB and / or CSI-RS can be determined based on the spatial relationship information configured for the PUSCH and / or PUCCH. For example, spatial relationships can be determined using spatial relationship resources, such as sounding reference signal (SRS) resources or non-zero power (NZP) CSI-RS. Specifically, for each PUCCH resource identified as being affected by an MPE event, the UE can use the QCL source chain to return to the specific SSB to determine the reference quasi-cooperative positioning (QCL) source. The indication of these types of resources can then be signaled using at least one SSB index or bitmap, where each bitmap entry refers to a specific SSB time index location.
[0157] As a second example, the transmitted indication is based on the PUCCH resource ID. In this case, the transmitted indication may include a specific field for each configured PUCCH resource ID. For an MPE indication, the UE can determine whether a particular PUCCH resource ID is directly affected by an MPE event, or whether the PUCCH resource ID is associated with a PUSCH transmission. When the particular resource is any of these resources, the UE can transmit an indication that the particular resource is affected by an MPE event. If at least one PUCCH group is configured (in Rel 16, a maximum of four PUCCH groups can be defined from a spatial perspective), the indication can be based on the PUCCH group ID. Using a PUCCH group-based indication instead of indicating a single resource can provide lower overhead.
[0158] As a third example, the transmitted indication is based on at least one Sounding Reference Signal (SRS) Resource ID (SRI). The SRS is a reference signal transmitted by the UE to the network device, which the network device can use to determine uplink channel quality. The SRS can be configured on the UE via the network device's signaling and may be associated with resources not allocated to the UE for communicating with the network device. Therefore, measurements performed on the SRS can provide some indication of what the UE is doing in other parts of the time-frequency resource grid. The Sounding Reference Signal (SRS) Resource ID (SRI) determines at least one time-frequency resource / mode for the SRS. The UE can use at least one SRSID configured for PUSCH spatial relationships by downlink control information transmitted by the network device to transmit indications of MPE events.
[0159] As a fourth example, the transmitted indication is based on at least one active Transport Configuration Indication (TCI) state of the Physical Downlink Shared Channel (PDSCH). As described above, the TCI state defines the configuration of the QCL relationship between a downlink reference signal in a CSI-RS set and the PDSCH DMRS port. In this case, based on the configured uplink resources, the UE determines which active TCI state of the PDSCH corresponds to a specific uplink resource, and when indicating an MPE event, the UE indicates one or more active TCI state indices to identify those specific UL resources as affected.
[0160] As a fifth example, the transmitted indication is based on the active TCI status of uplink transmissions within a common TCI framework for uplink and downlink beam management. In this case, the MPE indication may include an indication of a set of active TCI statuses for PUSCH or PUCCH, or both.
[0161] As a sixth example, we are referring to an antenna panel containing antenna elements. For example, a device may have two antenna panels on opposite sides of the device. As another example, a device may have four panels, each on a different side of the device. Antenna panels with more than one antenna element are capable of performing beamforming. Once panel information (i.e., how many panels there are and what the identifier of each panel is) is established between the network device and the UE, the transmitted indications can be based on the specific identifiers of the antenna panels. As an example, the network device can configure the UE with antenna panel-specific beam reports, and the UE can determine the indications of affected resources based on the antenna panel identifiers.
[0162] As an example, a UE may have four antenna panels, and the UE may send at least one indication indicating which panel is affected by MPE and / or which panel is not affected by MPE. The network device may determine candidates for specific uplink resources or uplink spatial relationship resources based on panel-specific downlink reference signal reports (or probe reference signal information). As another example, if the UE is equipped with two (or more) antenna panels (labeled #1 and #2 in this example), the UE may indicate to the network device that panel #2 is affected by MPE. Therefore, this indication allows the network device to know the affected uplink transmission resources for PUCCH / PUSCH transmissions by associating them with the panel ID, which will allow the network device to avoid scheduling uplink transmissions for the UE on these resources. Furthermore, if the UE indicates that panel #1 is not affected by MPE, the UE may indicate this to the network device. Receiving this indication will make the network device aware that it may be beneficial to use the resources associated with panel #1 for UE uplink transmissions. Therefore, upon receiving an indication that certain resources are not affected by MPE for a specific antenna panel of the UE, the network device may schedule UE uplink transmissions for those specific resources.
[0163] The UE can be a network device with MPE-related limitation indications provided for each UE transmission panel, wherein the panel is identified by explicit antenna panel identity, by Sounding Reference Signal (SRS) resource set ID, by PUCCH group identity, and / or by correspondence with a downlink reference signal set that serves as the uplink transmission beam of a potential spatial source reference signal. As an example, any of a particular SRS resource or group ID or downlink reference signal ID can implicitly indicate to the network device that a particular panel is affected.
[0164] When antenna panel identity is not explicitly used, it can be implicitly indicated to the network device. In this example, the UE can indicate that limits can be defined on the duty cycle of each antenna panel due to MPE or each SRS resource identity, PUCCH group identity, PUCCH identity, PUSCH identity, downlink reference signal identity. The MPE limit applied by the UE can be defined based on the maximum allowed transmit power / EIRP per antenna panel caused by the MPE.
[0165] In some examples, the UE can indicate whether the antenna panel, resource, and / or resource identity is affected by MPE and the amount of PMPR or duty cycle for each indicated resource / panel, for each antenna panel identity, and / or SRS resource set identity, and / or PUCCH identity, and / or PUSCH resource, and / or downlink reference signal identity. These listed resources, resource identities, and antenna panel identifiers can generally be considered as corresponding to the PUSCH / PUCCH identities and / or resources used as references for aligning uplink transmission beams.
[0166] In the example above, the information provided in the MP indicator may include resource-specific indications. The bit width for each resource in the MPE indicator can be one or more bits. In other words, one or more bits can be used to indicate a resource. This indication can be in the form of a bitmap. In this case, the indication can be set such that at least one bit in the resource-specific bitmap indicates a resource affected by the MPE. The resource can be indicated as being affected by the MPE based on, for example, a single threshold. The bit representing a specific resource in the bitmap can be set to '1' to indicate that the resource is affected by the MPE event, and set to '0' to indicate that the resource is not affected by the MPE event (or vice versa).
[0167] In one example, the UE can receive configuration from the network device to provide the network device with at least one of a passive (first type) indication and an active (second type) indication regarding an MPE event.
[0168] Passive indication may include determining at the UE whether a network device has been scheduled for at least one transmission on at least one PUSCH or PUCCH resource affected by MPE restrictions, which are configured / determined to be reported by the UE. If the network device has scheduled at least one transmission, an MPE event is triggered, and an MPE indication is generated and sent by the UE to the network device. Alternatively or additionally, if the UE has determined that it has already transmitted or will transmit at least one transmission on a channel (PUSCH / PUSCH) or an associated resource affected by MPE, an MPE event is triggered, and an MPE indication is generated and sent by the UE to the network device. As an example, the UE may be configured to perform periodic transmissions on the uplink, or the network may schedule the UE on the downlink, and the UE may provide DL feedback on the uplink. In another example, if the network has already scheduled or performed at least one transmission on a Physical Downlink Control Channel (PDCCH) or PDSCH resource corresponding to the configured PUCCH / PUSCH resource, the UE may indicate to the network device that an MPE event, a potential MPE event, or an active MPE event is expected to occur on that resource. Incident reporting can be performed as described in this article.
[0169] An active MPE event can be identified when the UE determines, either immediately or based on a predetermined observation period, whether a UL resource will be / will be affected by MPE. If it is determined that the uplink resource will be / will be affected, this indication is reported in advance (i.e., the UE is not currently scheduled to use the resource). Therefore, the UE actively triggers a report that it may experience uplink transmission limitations on the indicated resource.
[0170] In the combined active / passive approach, the UE can be configured to trigger an event with one or more thresholds (e.g., maximum power reduction). When the MPR is within a first threshold, the UE can be configured for a passive event. For example, when it is not necessary to reduce transmission power beyond the first threshold (which is less than a second threshold), the UE can trigger a passive event when the network device schedules UL transmissions or when the UE performs a transmission on one or more UL resources affected by MPE (e.g., uplink channels such as PUCCH and / or PUSCH, or corresponding resources associated with transmission). However, when the MPR exceeds the second threshold (above the first threshold), the UE can actively indicate an MPE event, preferably before the network device schedules the UE on the affected resources and / or the UE performs a transmission on the affected resources.
[0171] While MPR-based thresholds have been discussed above, it is understood that this is just one type of parameter that can be used to determine MPE events, and other parameters can be used (and applied) in the examples above. For instance, a counter-based mechanism could be used to count the number of scheduling events for the affected resource (e.g., the number of scheduling events associated with a specific resource within a time window), and this could be used to set a threshold for when / whether to send at least one MPE indication.
[0172] The UE can also be configured to provide indications of both resources affected by MPE and those unaffected. One example of these bitmap-related examples was discussed above. In this case, when the UE is configured to have a downlink reference signal-specific bitmap (e.g., for SSB / CSI-RS), the UE can be configured to provide complete bitmap information, including bitmaps of all DLRSs already configured in the system (i.e., occupied SSB time positions) or SSBs configured for L1-RSRP / CSI reporting. In one example, the bitmap or a portion of the bitmap may include information about a specific set of reference signals associated with MPE, such as reference signals / resources associated with PUCCH / PUSCH transmissions. In one example, the (complete) bitmap information may include a larger or broader set of reference signals than configured by the network device or associated by the UE for the current PUCCH / PUSCH transmission.
[0173] When complete bitmap information is provided, the UE can indicate which downlink reference signal resources are affected and / or unaffected by MPE, and this information can be used as a potential spatial relationship reference signal for uplink transmission. This information can be provided regardless of the MPE indication method described above. For example, the UE can transmit this indication when it indicates that all resources in the configured MPE indication are affected, or when N out of M resources are affected (where N is less than or equal to M; N1,2,3...<=M).
[0174] If the corresponding uplink is not affected by the MPE (i.e., the resources used for transmission on the permitted uplink), the bitmap can be transmitted using a random access channel procedure and / or multiplexed on any available uplink grant. As an example, the list of affected / unaffected resources can be based on the TCI status list of the physical downlink shared channel, as described above.
[0175] In one example, the network device can configure the UE using a reference signal type for constructing the bitmap. In another example, the bitmap type can be pre-configured in the UE. Based on the configured reference signal type, whenever the network device configures the UE with a new transmission configuration (e.g., for PUCCH / PUSCH / PDCCH / PDSCH), the UE can update the association of bit positions in the bitmap. This association is also known at the network device. As an example, the bitmap can be constructed based on any of the following: resource ID, antenna panel ID, TCI status ID, ink ID, beam ID, etc., because these are identifiers that the UE can indicate / reference when identifying resources affected by MPE. In other words, the indication of a resource identifies a directly affected beam / link, or the resource indirectly indicates at least one beam / link affected by an MPE event (e.g., through the spatial relationship between the indicated beam / link and the indicated resource).
[0176] As an example of bitmap construction, if resource identities #1, #2, #3, and #4 exist (which could be, for example, downlink reference signals considered as spatial relationship reference signals to uplink channels such as PUCCH / PUSCH, or they could be antenna panel IDs or SRS resource set IDs, etc.), these resource identities can be mapped to bit locations 1 through 4 in the bitmap. In another example, if there is an update to the resource IDs so that, for example, a PUSCH / PUCCH transmission, resource identities #1, #2, #3, and #4 are updated to identities #3, #4, #5, and #8 respectively, these resources will correspond to the same bit locations in the map (in the order of 1 through 4). It is understood that these are merely examples, and other mechanisms for mapping resources / links / beams can be configured for MPE reporting (e.g., descending order could be used instead of ascending order). The bitmap can also have a variable length, determined by the resource configuration. As another example, resources can also be identified such that, for example, resource identity #1 is a logical resource ID, the actual reference signal can change, but the identity remains the same. In this case, the UE can update the relevant reference signal for resource identity #1 without changing the bit position in the bitmap.
[0177] Figure 2 Examples of control devices for communication systems are shown, such as those coupled to and / or used to control access systems, such as RAN nodes (e.g., base stations, gNBs), central units of cloud architectures such as MMEs or S-GWs, nodes of the core network, scheduling entities such as spectrum management entities, or servers or hosts, such as devices hosting NWDAFs, AMFs, SMFs, UDMs / UDRs, etc. The control device can be integrated with nodes or modules of the core network or RAN, or it can be external. In some embodiments, the base station includes a separate control device unit or module. In other embodiments, the control device can be another network element, such as a radio network controller or a spectrum controller. Control device 200 can be arranged to provide control over communications within the service area of the system. Device 200 includes at least one memory 201, at least one data processing unit 202, 203, and an input / output interface 204. The control device can be connected to the receiver and transmitter of the device via this interface. The receiver and / or transmitter can be implemented as a radio front-end or a remote radio head. For example, control device 200 or processor 201 can be configured to execute appropriate software code to provide control functions.
[0178] Now refer to Figure 3A possible wireless communication device is described in more detail, and the figure shows a schematic partial cross-sectional view of communication device 300. Such a communication device is generally referred to as a user equipment (UE) or terminal. Suitable mobile communication devices can be provided by any device capable of transmitting and receiving radio signals. Non-limiting examples include mobile stations (MS) or mobile devices, such as mobile phones or so-called "smartphones," computers equipped with wireless interface cards or other wireless interface devices (e.g., USB dongles), personal data assistants (PDAs) or tablet computers equipped with wireless communication capabilities, or any combination of these. Mobile communication devices can provide, for example, data communications for carrying communications, such as voice, email, text messaging, multimedia, etc. Therefore, a variety of services can be provided to the user via the user's communication device. Non-limiting examples of these services include two-way or multi-way calling, data communication or multimedia services, or simply access to data communication network systems, such as the Internet. Broadcast or multicast data can also be provided to the user. Non-limiting examples of content include downloads, television and radio programs, videos, advertisements, various alarms, and other information.
[0179] Wireless communication devices can be, for example, mobile devices, i.e., devices not fixed to a specific location, or they can be fixed devices. Wireless devices may or may not require human interaction to communicate. In this invention, the term UE or "user" is used to refer to any type of wireless communication device.
[0180] Wireless device 300 can receive signals via air or radio interface 307 through appropriate means for receiving, and can transmit signals via appropriate means for transmitting radio signals. Figure 3 In the diagram, the transceiver device is schematically represented by block 306. The transceiver device 306 can be provided, for example, via a radio section and an associated antenna arrangement. The antenna arrangement can be located inside or outside the wireless device.
[0181] Wireless devices typically include at least one data processing entity 301, at least one memory 302, and other possible components 303 for software and hardware assistance in performing tasks designed to be performed, including controlling access to and communication with access systems and other communication devices. Data processing, storage, and other related control devices may be provided on a suitable circuit board and / or in a chipset. This functionality is indicated by reference numeral 704. Users can control the operation of the wireless device through a suitable user interface, such as a keyboard 305, voice commands, a touchscreen or keyboard, or combinations thereof. A display 308, a speaker, and a microphone may also be provided. Furthermore, wireless communication devices may include suitable connectors (wired or wireless) for connecting other devices and / or for connecting external accessories, such as hands-free devices.
[0182] Figure 4 A schematic diagram illustrates non-volatile storage media 400a (e.g., a computer optical disc (CD) or digital versatile optical disc (DVD)) and 400b (e.g., a Universal Serial Bus (USB) memory stick) for storing instructions and / or parameters 402, which, when executed by the processor, allow the processor to perform... Figures 6 to 7 One or more steps in the method.
[0183] Therefore, embodiments may vary within the scope of the appended claims. Typically, some embodiments may be implemented using hardware or dedicated circuitry, software, logic, or any combination thereof. For example, some aspects may be implemented in hardware, while others may be implemented using firmware or software, which may be executed by a controller, microprocessor, or other computing device, but the embodiments are not limited thereto. While various embodiments may be illustrated and described as block diagrams, flowcharts, or using some other graphical representation, it will be well understood that, by way of non-limiting example, the blocks, apparatuses, systems, techniques, or methods described herein may be implemented in hardware, software, firmware, special-purpose circuitry or logic, general-purpose hardware or controllers, or other computing devices, or combinations thereof.
[0184] These embodiments can be implemented by computer software stored in memory, and can be executed by at least one data processor of the entity involved, or by hardware, or by a combination of software and hardware. Furthermore, it should be noted in this respect that, for example... Figure 6 and Figure 7 Any process within the software can represent program steps, or interconnected logic circuits, blocks, and functions, or a combination of program steps and logic circuits, blocks, and functions. Software can be stored on physical media such as memory chips or memory blocks implemented within a processor, magnetic media such as hard disks or floppy disks, and optical media such as DVDs and their data variants, and CDs.
[0185] The memory can be of any type suitable for the local technical environment and can be implemented using any suitable data storage technology, such as semiconductor-based memory devices, magnetic memory devices and systems, optical memory devices and systems, fixed memory, and removable memory. As a non-limiting example, the data processor can be of any type suitable for the local technical environment and can include one or more of general-purpose computers, special-purpose computers, microprocessors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), gate-level circuits, and processors based on multi-core processor architectures.
[0186] Alternatively or additionally, some embodiments may be implemented using circuitry. This circuitry may be configured to perform one or more of the foregoing functional and / or method steps. This circuitry may be provided in base stations and / or communication equipment.
[0187] As used in this application, the term "circuit" may refer to one or more or all of the following:
[0188] (a) Hardware circuit implementation only (e.g., implementation in analog and / or digital circuits only);
[0189] (b) A combination of hardware circuitry and software, for example:
[0190] (i) A combination of analog and / or digital hardware circuitry with software / firmware, and
[0191] (ii) any part of a hardware processor(s) having software (including multiple digital signal processors(s)), software, and multiple memories(s), which work together to enable an apparatus such as a communication device or base station to perform the aforementioned functions; and
[0192] (c) Multiple hardware circuits and / or multiple processors (e.g., multiple microprocessors or a portion thereof) that require software (e.g., firmware) to operate, but which may be absent when no software is required to operate.
[0193] This definition of "circuit" applies to all uses of the term in this application, including in any claim. As another example, as used in this application, the term "circuit" also covers implementations of hardware circuitry or a processor (or processors) or a portion thereof and its accompanying software and / or firmware. The term "circuit" also covers, for example, integrated devices.
[0194] The foregoing description has provided a complete and informative description of some embodiments through exemplary and non-limiting examples. However, various modifications and adjustments will become apparent to those skilled in the art when read in conjunction with the accompanying drawings and the appended claims, given the foregoing description. Nevertheless, all such and similar modifications taught will still fall within the scope defined by the appended claims.
Claims
1. An apparatus for a terminal, the apparatus comprising: Components for determining at least one uplink resource associated with reduced uplink transmission power, said reduced uplink transmission power meeting the maximum permissible exposure (MPE) requirement; as well as A component for sending an identifier of the at least one uplink resource to a network device, wherein the identifier uses an identifier of SSB and / or CSI-RS to represent the at least one uplink resource, and wherein the identifier is included within a bitmap. The apparatus further includes a component for receiving configuration information that configures the apparatus together with the component for determining, wherein the determination includes comparing a measured value of at least one parameter with at least one associated threshold for the parameter. The apparatus further includes: components for determining whether the apparatus is scheduled to transmit on at least one resource of a physical uplink shared channel and a physical uplink control channel associated with the reduced uplink transmission power; and The component for transmitting includes a component for transmitting the identifier in response to determining that the device is scheduled to transmit on at least one resource of a physical uplink shared channel or a physical uplink control channel associated with the reduced uplink transmission power.
2. The apparatus according to claim 1, wherein at least the first parameter and the second parameter of the at least one parameter have corresponding first thresholds and second thresholds.
3. The apparatus of claim 1, wherein at least one of the at least one parameters has an associated first threshold and a second threshold, wherein the second threshold corresponds to a reduction in uplink transmission power greater than the first threshold, and wherein: When only the first threshold is exceeded, the component for transmission sends at least one identifier of those uplink resources allocated to the terminal for uplink transmission affected by the power reduction. as well as When both the first threshold and the second threshold are exceeded, the component for transmission transmits at least one identifier of those uplink resources that were not allocated to the terminal for uplink resources affected by the power reduction.
4. The apparatus of claim 1, wherein the bitmap identifier is at least one uplink resource that is not associated with the reduced uplink transmission power.
5. The apparatus of claim 1, further comprising a component for updating the bitmap based on the uplink resource configuration.
6. The apparatus according to any one of claims 1 to 3, wherein a single identity is used to identify a plurality of uplink resources associated with reduced uplink transmission power.
7. The apparatus according to any one of claims 1 to 3, further comprising: A component for sending a cancellation instruction to the network device when the device determines that the event that caused the reduced uplink transmission power has passed.
8. A method for a terminal apparatus, the method comprising: At least one uplink resource is identified as being associated with reduced uplink transmission power, the reduced uplink transmission power being in accordance with the maximum permissible exposure (MPE) requirement. as well as The identifier of the at least one uplink resource is sent to the network device, wherein the identifier uses an identifier of SSB and / or CSI-RS to represent the at least one uplink resource, and wherein the identifier is included within a bitmap. The method further includes receiving configuration information that configures the device together with components for determination, wherein the determination includes comparing a measured value of at least one parameter with at least one associated threshold for said parameter. The method further includes: determining whether the device is scheduled to transmit on at least one resource of a physical uplink shared channel and a physical uplink control channel associated with the reduced uplink transmission power; and The identifier is transmitted in response to determining that the device is scheduled to transmit on at least one resource of the physical uplink shared channel or the physical uplink control channel associated with the reduced uplink transmission power.
9. A computer program product, when running on at least one processor of a device for a terminal, causes the device to perform: Identify at least one uplink resource associated with reduced uplink transmission power, said reduced uplink transmission power meeting the Maximum Permissible Exposure (MPE) requirement; and The identifier of the at least one uplink resource is sent to the network device, wherein the identifier uses an identifier of SSB and / or CSI-RS to represent the at least one uplink resource, and wherein the identifier is included within a bitmap. Receive configuration information that configures the device together with components for determination, wherein the determination includes: A measurement of at least one parameter is compared with at least one associated threshold for said parameter. Determine whether the device is scheduled to transmit on at least one resource of the physical uplink shared channel and the physical uplink control channel associated with the reduced uplink transmission power; and The identifier is transmitted in response to determining that the device is scheduled to transmit on at least one resource of the physical uplink shared channel or the physical uplink control channel associated with the reduced uplink transmission power.
Citation Information
Patent Citations
Power-limit reporting in a communication system using carrier aggregation
EP2317815A1