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WO2025108613A1 - Procédé, appareil et programme informatique - Google Patents

Procédé, appareil et programme informatique Download PDF

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Publication number
WO2025108613A1
WO2025108613A1 PCT/EP2024/078230 EP2024078230W WO2025108613A1 WO 2025108613 A1 WO2025108613 A1 WO 2025108613A1 EP 2024078230 W EP2024078230 W EP 2024078230W WO 2025108613 A1 WO2025108613 A1 WO 2025108613A1
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WO
WIPO (PCT)
Prior art keywords
sbfd
slot
measurement
user device
power
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/EP2024/078230
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English (en)
Inventor
Klaus Ingemann Pedersen
Roberto Maldonado
Guillermo POCOVI
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Nokia Technologies Oy
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Nokia Technologies Oy
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Publication of WO2025108613A1 publication Critical patent/WO2025108613A1/fr
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H04B17/21—Monitoring; Testing of receivers for calibration; for correcting measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/318—Received signal strength
    • H04B17/328—Reference signal received power [RSRP]; Reference signal received quality [RSRQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1469—Two-way operation using the same type of signal, i.e. duplex using time-sharing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/347—Path loss
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames

Definitions

  • a communication system can be seen as a facility that enables communication sessions between two or more entities such as user terminals, base stations and/or other nodes by providing carriers between the various entities involved in the communications path.
  • a communication system can be provided for example by means of a communication network and one or more compatible communication devices.
  • the communication sessions may comprise, for example, communication of data for carrying communications such as voice, video, electronic mail (email), text message, multimedia and/or content data and so on.
  • Non-limiting examples of services provided comprise two-way or multi-way calls, data communication or multimedia services and access to a data network system, such as the Internet.
  • the communication system and associated devices typically operate in accordance with a given standard or specification which sets out what the various entities associated with the system are permitted to do and how that should be achieved. Communication protocols and/or parameters which shall be used for the connection are also typically defined.
  • UTRAN 3G radio
  • NR New Radio
  • LTE long-term evolution
  • UMTS Universal Mobile Telecommunications System
  • NR New Radio
  • 3GPP 3rd Generation Partnership Project
  • SBFD subband full duplex
  • an apparatus comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause a user device at least to: receive power scaling information to be applied to at least one sub-band full duplexing, SBFD, slot of one or more SBFD slots; perform a measurement on the at least one SBFD slot; and adjust a result of the measurement based on the power scaling information.
  • an apparatus comprising means for causing a user device to perform: receiving power scaling information to be applied to at least one sub-band full duplexing, SBFD, slot of one or more SBFD slots; performing a measurement on the at least one SBFD slot; and adjust a result of the measurement based on the power scaling information.
  • a computer readable medium comprising instructions which, when executed by an apparatus, cause a user device to perform at least the following: receiving power scaling information to be applied to at least one sub-band full duplexing, SBFD, slot of one or more SBFD slots; performing a measurement on the at least one SBFD slot; and adjust a result of the measurement based on the power scaling information.
  • the user device may be caused to perform: receiving radio resource information configuring the one or more SBFD slots including the at least one SBFD slot.
  • the measurement may include at least one of: a layer 1, L1, reference signal receive power, RSRP, measurement; a channel status information, CSI, based RSRP measurement; a synchronization signal, SS, based RSRP measurement; a layer 3, L3, RSRP measurement; or a radio resource measurement, RRM, measurement.
  • the measurement is used to determine a downlink pathloss.
  • the user device may be caused to perform: transmitting a report including at least one of the result of the measurement or the adjusted result of the measurement.
  • the user device may be caused to perform: receiving an indicator indicative of an activation or an inactivation of a power scaling on the at least one SBFD slot.
  • the result of the measurement may be adjusted by scaling a downlink received power of at least one of reference signals received in the at least one SBFD slot.
  • an apparatus comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause a network node at least to: signal power scaling information to be applied to at least one sub-band full duplexing, SBFD, slot of one or more SBFD slots; and apply said power scaling to the at least one SBFD slot for performing downlink transmissions.
  • a network node at least to perform: signal power scaling information to be applied to at least one sub-band full duplexing, SBFD, slot of one or more SBFD slots; and apply said power scaling to the at least one SBFD slot for performing downlink transmissions.
  • a computer readable medium comprising instructions which, when executed by an apparatus, cause a network node to perform at least the following: signal power scaling information to be applied to at least one sub-band full duplexing, SBFD, slot of one or more SBFD slots; and apply said power scaling to the at least one SBFD slot for performing downlink transmissions.
  • the network node may be caused to perform: signal radio resource information for configuring the one or more SBFD slots including the at least one SBFD slot.
  • the network node may be caused to perform: receive a report including at least one of a result of a measurement or an adjusted result of a measurement made based on the power scaling information.
  • the network node may be caused to perform: signal an indicator indicative of an activation or an inactivation of a power scaling on the at least one SBFD slot.
  • the power scaling information may include: at least one identifier information of the at least one SBFD slot; and at least one power scaling value corresponding to the at least one identifier.
  • the power scaling information may be signalled via a radio resource control, RRC, message or a RRC information element.
  • the power scaling information may be signalled via downlink control information, DCI, and the power scaling information may indicate whether a power scaling is applied or not at the at least one SBFD slot.
  • the power scaling information may include information indicative of one of power scaling values to be applied to adjust the result of the measurement.
  • a type of the DCI may be a group common DCI or a cell specific DCI format.
  • the power scaling information may include pattern information indicating location of the at least one SBFD slot.
  • a non-transitory computer readable medium comprising program instructions that, when executed by an apparatus, cause the apparatus to perform at least the method according to any of the preceding aspects.
  • Figure 1 shows a representation of a network system according to some example embodiments
  • Figure 2 shows a representation of a control apparatus according to some example embodiments
  • Figure 3 shows a representation of an apparatus according to some example embodiments
  • Figure 4 shows a representation of downlink, uplink, and SBFD slots
  • Figure 5 shows a representation of a frame format
  • Figure 6 illustrates power control offsets used for non-SBFD slots
  • Figures 7 to 8 illustrate operations that may be performed by apparatus described herein
  • Figures 9A to 9B illustrate example signalling that may be performed between apparatus described herein
  • Figures 10 and 11 illustrate operations that may be performed by apparatus described herein.
  • the following describes operations that may be performed in relation to signalling between a network node and a user device during SBFD slots for applying transmit power control during downlink transmissions opportunities.
  • a network node applies transmit power reductions (relative to a nominal downlink transmission power) for its downlink transmissions in SBFD slots to reduce the likelihood of cross-link- interference arising on uplink (UL) transmissions from downlink (DL) transmissions.
  • the network node is described herein as providing power control information to a user device that provides information about the transmit power reduction applied during the SBFD slot (e.g., when the downlink transmit power reduction will be applied, and/or a value for the downlink transmit power reduction).
  • the user device may choose to take this information into consideration when measuring a reference signal received power by using reference signals received from the network node during an SBFD slot in which the downlink transmit power reduction power is to be applied. For example, the user device may upscale a measurement result obtained during the SBFD slots by the value of the downlink transmit power reduction to obtain an upscaled measurement result. The user device may provide the upscaled measurement result or the non- upscaled measurement result to the network node. [40] At least one of the network node or the user device may use the upscaled measurement result to determine whether at least one radio resource management mechanism may be deployed (e.g., uplink transmission power control, handover, and/or scheduling a resource allocation for transmissions between the user device and the network node).
  • at least one radio resource management mechanism e.g., uplink transmission power control, handover, and/or scheduling a resource allocation for transmissions between the user device and the network node.
  • FIG. 1 illustrates an example communication environment in which example embodiments of the present disclosure can be implemented;
  • Figure 1 shows an example communication environment 100 in which example embodiments of the present disclosure can be implemented.
  • a plurality of communication devices comprising user devices 110 and 115 (also referred to herein as a “terminal” or “terminal device”) and a network device 120 (also referred to herein as a “network node”), can communicate with each other.
  • the network device 120 may serve a coverage area, called a cell 125.
  • the user device 110 may have access to a communication network via the cell 125.
  • both the user device 110 and the network device 120 may be configured to implement a beamforming technique and communicate with each other via a plurality of beams.
  • the term “terminal device” refers to any end device that may be capable of wireless communication.
  • a terminal device may also be referred to as a communication device, user equipment (UE), a Subscriber Station (SS), a Portable Subscriber Station, a mobile device, a Mobile Station (MS), or an Access Terminal (AT).
  • the terminal device may include, but not limited to, a mobile phone, a cellular phone, a smart phone, voice over IP (VoIP) phones, wireless local loop phones, a tablet, a wearable terminal device, a personal digital assistant (PDA), portable computers, desktop computer, image capture terminal devices such as digital cameras, gaming terminal devices, music storage and playback appliances, vehicle-mounted wireless terminal devices, wireless endpoints, mobile stations, laptop-embedded equipment (LEE), laptop-mounted equipment (LME), USB dongles, smart devices, wireless customer-premises equipment (CPE), a machine-type communications (MTC) device, an Internet of Things (IoT) device, a watch or other wearable, a head-mounted display (HMD), a vehicle, a drone, a medical
  • the terminal device may also correspond to a Mobile Termination (MT) part of an IAB node (e.g., a relay node).
  • MT Mobile Termination
  • the terms “terminal device”, “communication device”, “terminal”, “user device”, “user equipment” and “UE” may be used interchangeably.
  • the term “network device” is used interchangeably with “network node”, and refers to a node in a communication network via which a terminal device accesses the network and receives services therefrom.
  • the network device may refer to a base station (BS) or an access point (AP), for example, a node B (NodeB or NB), an evolved NodeB (eNodeB or eNB), an NR NB (also referred to as a gNB), a Remote Radio Unit (RRU), a radio header (RH), a remote radio head (RRH), a relay, an Integrated Access and Backhaul (IAB) node, a low power node such as a femto, a pico, a non-terrestrial network (NTN) or non-ground network device such as a satellite network device, a low earth orbit (LEO) satellite and a geosynchronous earth orbit (GEO) satellite, an aircraft network device, and so forth, depending on the applied terminology and technology.
  • BS base station
  • AP access point
  • NodeB or NB node B
  • eNodeB or eNB evolved NodeB
  • NR NB also referred to as a gNB
  • radio access network (RAN) split architecture comprises a Centralized Unit (CU) and a Distributed Unit (DU) at an IAB donor node.
  • An IAB node comprises a Mobile Terminal (IAB-MT) part that behaves like a UE toward the parent node, and a DU part of an IAB node behaves like a base station toward the next-hop IAB node.
  • IAB-MT Mobile Terminal
  • a link from the network device 120 to the user device 110 or 115 is referred to as a DL
  • a link from the user device 110 or 115 to the network device 120 is referred to as a UL.
  • the network device 120 is a Tx device (or a transmitter), and the user device 110 or 115 is a Rx device (or a receiver).
  • the user device 110 or 115 is a Tx device (or a transmitter), and the network device 120 is a Rx device (or a receiver).
  • a link between the user device 110 and another user device (not shown) is referred to as a sidelink (SL).
  • SL one of the user devices is a Tx device (or a transmitter), and the other of the user devices is a Rx device (or a receiver).
  • Communications in the communication environment 100 may be implemented according to any proper communication protocol(s), comprising, but not limited to, cellular communication protocols of the first generation (1G), the second generation (2G), the third generation (3G), the fourth generation (4G), the fifth generation (5G), the sixth generation (6G), and the like, wireless local network communication protocols such as Institute for Electrical and Electronics Engineers (IEEE) 802.11 and the like, and/or any other protocols currently known or to be developed in the future.
  • IEEE Institute for Electrical and Electronics Engineers
  • the communication may utilize any proper wireless communication technology, comprising but not limited to: Code Division Multiple Access (CDMA), Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Frequency Division Duplex (FDD), Time Division Duplex (TDD), Multiple-Input Multiple-Output (MIMO), Orthogonal Frequency Division Multiple (OFDM), Discrete Fourier Transform spread OFDM (DFT-s-OFDM) and/or any other technologies currently known or to be developed in the future.
  • CDMA Code Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • MIMO Multiple-Input Multiple-Output
  • OFDM Orthogonal Frequency Division Multiple
  • DFT-s-OFDM Discrete Fourier Transform spread OFDM
  • the control apparatus may comprise at least one random access memory (RAM) 211a, at least on read only memory (ROM) 211b, at least one processor 212, 213 and an input/output interface 214.
  • the at least one processor 212, 213 may be coupled to the RAM 211a and the ROM 211b.
  • the at least one processor 212, 213 may be configured to execute an appropriate software code 215.
  • the software code 215 may for example allow to perform one or more steps to perform one or more of the present aspects.
  • the software code 215 may be stored in the ROM 211b.
  • the control apparatus 200 may be interconnected with another control apparatus 200 controlling another function of the network device. In some embodiments, each function of the network device comprises a control apparatus 200.
  • the apparatus 200 may be implemented at the network device 120 or may be the network device 120.
  • Figure 3 illustrates an example of a terminal 300, such as the user device 110, 115 illustrated on Figure 1.
  • the terminal 300 may be provided by any device capable of sending and receiving radio signals, such as the user device described herein.
  • the terminal 300 may provide, for example, communication of data for carrying communications.
  • the communications may be one or more of voice, electronic mail (email), text message, multimedia, data, machine data and so on.
  • the terminal 300 may receive signals over an air or radio interface 307 via appropriate apparatus for receiving and may transmit signals via appropriate apparatus for transmitting radio signals.
  • transceiver apparatus is designated schematically by block 306.
  • the transceiver apparatus 306 may be provided for example by means of a radio part and associated antenna arrangement.
  • the antenna arrangement may be arranged internally or externally to the mobile device.
  • the terminal 300 may be provided with at least one processor 301, at least one memory ROM 302a, at least one RAM 302b and other possible components 303 for use in software and hardware aided execution of tasks it is designed to perform, including control of access to and communications with access systems (such as a network access system provided by the network device described above in relation to Figures 1 and 2) and other communication devices.
  • the at least one processor 301 is coupled to the RAM 302b and the ROM 302a.
  • the at least one processor 301 may be configured to execute an appropriate software code 308.
  • the software code 308 may for example allow to perform one or more of the present aspects.
  • the software code 308 may be stored in the ROM 302a.
  • the processor, storage and other relevant control apparatus can be provided on an appropriate circuit board and/or in chipsets. This feature is denoted by reference 304.
  • the device may optionally have a user interface such as key pad 305, touch sensitive screen or pad, combinations thereof or the like.
  • a display, a speaker and a microphone may be provided depending on the type of the device.
  • the terminal 300 may be an apparatus comprising at least one processor and at least one memory storing instructions that, when executed by the at least one processor, cause a user device 110, 115 to perform examples or embodiments described in this document.
  • flexible duplexing relates to the use of different slot formats that comprise concurrent transmission opportunities for both uplink and downlink in the same channel.3GPP considered Flexible duplexing in 5G-Advanced Release-18, and in 3GPP TR 38.858.
  • a transmission opportunity may be considered to be a time-frequency resource that is available for a radio transmission or reception.
  • an uplink transmission opportunity may be considered to be a time- frequency resource that is available for uplink transmission, and a downlink transmission opportunity may be considered to be a time-frequency resource that is available for downlink transmission.
  • a channel may be considered to comprise a logical or physical connection over a transmission medium.
  • Example channels defined in 3GPP comprise at least a physical downlink control channel (PDCCH), and a physical uplink shared channel (PUSCH), etc.
  • PDCCH physical downlink control channel
  • PUSCH physical uplink shared channel
  • Time slots that comprise an SBFD slot format comprise a mixture of uplink and downlink resources (e.g., time-frequency resources that may be used for transmission and/or reception, depending on whether the resource is for uplink or downlink).
  • uplink and downlink resources e.g., time-frequency resources that may be used for transmission and/or reception, depending on whether the resource is for uplink or downlink.
  • SBFD slots There are a range of different types of SBFD slots that reflect different makeups of uplink and downlink transmission opportunities.
  • an SBFD slot may comprise a mixture of uplink and downlink transmission opportunities.
  • an SBFD slot may comprise uplink resources near a central frequency portion of the slot (e.g., sandwiched between downlink resources for downlink transmission resources), or at an extreme of the range of frequencies of the slot (e.g., at the lowest frequency of the slot, or at a highest frequency of the slot).
  • the uplink resources may be separated from the downlink resources by a guard band.
  • a guard band may be considered as being a narrow range of frequencies that separates two ranges of wider frequency (e.g., carrier frequencies respectively associated with uplink and downlink resources) that is unused for transmission opportunities in either uplink or downlink directions.
  • FIG. 4 illustrates an example of an enhanced radio frame configuration that comprises three DL slots 401 followed by five SBFD slots 402, and two UL slots 403.
  • Each SBFD slot in Figure 4 is illustrated as comprising resources (e.g., time-frequency resources) for DL transmission, guard band (e.g., unused resources that may denote a boundary between uplink and downlink transmissions, represented in Figure 4 as gaps 404 between UL and DL resources), and UL resources in the middle.
  • Each slot in Figure 4 illustrates a time duration considered to comprise concurrent transmissions.
  • each of the SBFD slots comprise both UL and DL transmission opportunities on respective frequency carriers that are performed simultaneously.
  • the SBFD slot formats with concurrent DL and UL transmission opportunities are occasionally labelled “X-slots”.
  • cross link interference may arise.
  • the cross link interference may arise as a result of intra-network node transmissions (e.g., as a result of DL transmissions made by a network node on UL transmissions to be received by that network node), and/or as a result of inter-network node transmissions (e.g., as a result of DL transmissions made by a network node on UL transmissions to be received by another network node).
  • intra-network node transmissions e.g., as a result of DL transmissions made by a network node on UL transmissions to be received by that network node
  • inter-network node transmissions e.g., as a result of DL transmissions made by a network node on UL transmissions to be received by another network node.
  • Figure 5 illustrates 10 time slots:
  • the first and sixth time slots are downlink slots 501 (e.g., time slots for downlink transmission opportunities)
  • the fifth and tenth time slots are uplink slots 502 (e.g., time slots for uplink transmission opportunities)
  • the second to fourth and seventh to ninth time slots are for SBFD time slots 503 (e.g., time slots for SBFD transmission opportunities).
  • the third and eighth time slots (which are both SBFD time slots) may be both configured to have reference signals transmitted therein.
  • the reference signals may comprise, for example, a synchronization signal block (SSB).
  • SSB synchronization signal block
  • the reference signals may comprise, for example, a Channel State Information-Reference Signal (CSI-RS).
  • CSI-RS Channel State Information-Reference Signal
  • downlink transmission opportunities in the third time slot are transmitted using a “reduced” power while downlink transmission opportunities in the eighth time slot are transmitted using a preconfigured power.
  • the reduced power is reduced relative to the preconfigured power.
  • the SBFD power reduction illustrated in the third time slot Figure 5 applies to all downlink transmissions made during the third time slot (e.g., SSB, CSI-RS, PDCCH and PDSCH transmissions) and is not restricted to a type of signal within a time slot. [64] Therefore, Figure 5 illustrates different reference signal transmissions being transmitted on different downlink transmission opportunities using respective (different) transmission powers.
  • FIG. 6 illustrates a Synchronization Signal Block (SSB) 601, a reference signal 602, and a physical downlink shared channel (PDSCH) 603.
  • SSB Synchronization Signal Block
  • PDSCH physical downlink shared channel
  • the network node nominal transmit power of the reference signals (used for RSRP-based measurements) is provided to the user device in a hierarchical manner, where the RRC parameter ss-PBCH-BlockPower indicates the average Energy per Resource Element (EPRE, in dBm) of the SSB blocks, while the EPRE of the reference signal reference signal is provided via the powerControlOffsetSS power as an offset relative to the SSB blocks (e.g., in dB).
  • a third RRC parameter powerControlOffset [dB] is used to indicate relative power differences between power used for transmission opportunities on the reference signal and power used for transmission opportunities on the PDSCH.
  • this third RRC parameter is used by user device for determining and reporting PDSCH channel state information (CSI) to the network node.
  • CSI channel state information
  • These RRC parameters are used for power control over a plurality of time slots and, as mentioned above, apply to specific types of signals.
  • the RRC parameters are transmitted by the network node 200 to the user device 300. The use of these RRC parameters is useful for standard cases in which a network node transmit power of the reference signal is not changed over time on a slot resolution.
  • the user device would naturally measure an RSRP of 10 dB less than the RSRP measured when the reference signal appears in the eighth time slot, such as the example of Figure 5.
  • the present application recognizes that at least some user device functions may be impacted by reducing transmission power for downlink transmissions within SBFD slots.
  • the present application recognizes that the downlink transmissions made within SBFD slots from a network node to a user device comprise a range of types of downlink transmissions, including transmissions that are used by the user device to quantify a level of signal degradation between the network node and the user device (e.g., to quantify a level of pathloss).
  • Changing the transmission power of the downlink signals used for quantifying a level of signal degradation changes the determined value associated with the level of signal degradation.
  • the quantified level of signal degradation can be used to trigger events and/or determine a communication configuration for use by the user device and/or the network node for transmission and/or reception therebetween. Consequently, changing the transmission power for transmitting the downlink signals can alter communication configurations of the communicating entities.
  • the likelihood inter-user device cross link interference (e.g., the interference resulting from uplink transmissions made by a user device on downlink reception at another user device) may be increased, the user device may be more likely to handed over to another cell, and/or the efficiency with which network resources are used may be negatively affected. These are illustrated in more detail in the following paragraphs. [72] First, the increased likelihood of inter-user device cross link interference is considered. [73] 3GPP user devices are currently configured to perform open loop transmit power control (TPC). Under open loop transmit power control, user devices scale their transmission power linearly using a measured value of pathloss associated with transmissions from a network node serving the user device and the user device.
  • TPC open loop transmit power control
  • the user device may obtain a pathloss estimate for this pathloss by measuring a Reference Signal Received Power (RSRP) on a Channel State Information-Reference Signal (CSI-RS) to determine an average RSRP, and comparing this average RSRP value to a network node’s known nominal transmit power.
  • RSRP Reference Signal Received Power
  • CSI-RS Channel State Information-Reference Signal
  • the user device transmits a physical uplink shared channel (PUSCH) signal on an active UL bandwidth part (BWP), b, of carrier frequency, f, of serving cell, c, using a parameter set configuration with index j and PUSCH power control adjustment state with index l
  • the user device determines the PUSCH transmission power PPUSCH, ⁇ , ⁇ , ⁇ (i, j, q ⁇ , l) in PUSCH transmission occasion i as where P L ⁇ , ⁇ , ⁇ (q ⁇ ) is a downlink pathloss estimate in dB calculated by the user device using reference signal, and (RS) index q ⁇ for the active DL BWP, as described in clause 12 of TS 3GPP 38.213.
  • PUSCH physical uplink shared channel
  • BWP active UL bandwidth part
  • the user device when the user device is unaware that the network node has reduced the network node’s transmission power, the user device will determine that there is a higher pathloss currently being experienced. For example, when the network node reduces the downlink transmission power by 10dB, the user device will determine the pathloss as being 10dB smaller than it would have been without this reduction. The user device will subsequently increase its uplink transmission power proportionately to this measured pathloss (e.g., by Alpha times (PL_withoutpowerReduction + 10dB) for this example). This is undesirable, as the user device should preferably operate with its normal transmission power regardless of whether the network node reduces its downlink transmission power in some SBFD slots.
  • RSRP measurements performed by the user device are also used to trigger handover (HO) decisions.
  • CSI-RS RSRP measurements are used to determine when to trigger a radio resource control (RRC) A3 event.
  • RRC A3 events are currently defined in Section 5.5.4.4 of 3GPP TS 38.331.
  • the user device When the user device is unaware of such power change, the user device would report a more pessimistic CSI report to the serving network nodes than is merited by the deliberate reduction in transmission power.
  • the CSI report may comprise at least one of an RSRP measurement value, or a channel quality indicator (CQI) value (which is impacted by a lower downlink transmission power), depending on what information the user device is configured to report.
  • CQI channel quality indicator
  • This more pessimistic CSI report will affect future network node scheduling decisions, as the network node will over-protect the PDSCH transmissions with higher coding rate, lower modulation index and/or lower Multiple-Input-Multiple-Output (MIMO) layers for antenna usage.
  • MIMO Multiple-Input-Multiple-Output
  • the network node scheduling decisions may result in an unnecessarily lower spectral efficiency, which could compromise quality of service provisions for at least one application.
  • the following discloses mechanisms by which a network node can inform a user device being served by the network node of when the network node intends to reduce the downlink transmission power of some, or all, of the network node’s SBFD slots.
  • the user device may be provided with an indication that at least one downlink transmission opportunity in an SBFD slot will be associated with a transmission power offset (e.g., the user device is provided with an indication that at least one downlink transmission opportunity in an SBFD slot will be transmitted using a reduced power, the reduced power being a power that is offset from a nominal transmission power of the network node).
  • the transmission power offset indicates a value by which a transmission power of the network node will be offset from a nominal downlink transmission power during said at least one downlink transmission opportunity.
  • the indication may comprise a value for the power offset. Stated differently, the indication may include information of how many dBs the power reduction equals.
  • the user device may use the indicated information to compensate for any measured downlink transmission power that was measured during the SBFD slots when the downlink transmission power was expected to be reduced. For example, the user device may upscale the measured downlink transmission power by an amount that corresponds to the amount of power reduction applied by the network node within those slots. The user device may use the compensated (e.g., upscaled) power to determine whether to cause at least one i radio resource management mechanism to be performed.
  • compensated e.g., upscaled
  • the upscaled physical layer RSRP measurements are delivered as input to the Layer-3 filter as defined in the RRC specifications (3GPP TS 38.331, clause 5.5.3.2).
  • the user device TPC measure may be performed (as described above and as defined in clause 7.1.1 in 3GPP TS 38.213) using these upscaled RSRP measurements.
  • FIG. 7 illustrates two examples of the form in which the indication may indicate to the user device which SBFD slots will be affected by a power reduction for downlink transmissions.
  • Figure 7 relates to an example in which the user device (such as the user device described above in relation to Figure 1 or 3) is provided with an indication that a downlink transmission power offset is to be applied in respect of all SBFD slots.
  • This indication may comprise a value of the power offset.
  • This indication may comprise an index value that indicates a power offset value preconfigured on the user device.
  • the user device is configured to determine whether a reference signal received power (RSRP) measurement was performed on at least one SBFD slot of one or more SBFD slots that have been configured to the user device.
  • RSRP reference signal received power
  • the compensation value may be specific for SBFD slots. Stated differently, the power offset value used for downlink transmissions made during SBFD slots may be different to any power offset value used for downlink transmissions made during fully downlink slots (e.g., time slots comprising only downlink transmission opportunities).
  • the user device determines that a RSRP measurement was performed during at least one SBFD slot, the user device applies the power offset value to the measured value obtained for the CSI RSRP measurement to increase the measured value by the power offset value.
  • the user device determines that a RSRP measurement is performed during a non-SBFD slot, the user device does not apply the power offset value to any measured value obtained for the CSI RSRP measurement that is performed at the non-SBFD slot.
  • Aspects of the above operations are represented by 701 to 703 in Figure 7.
  • the user device receives information on downlink transmission power scaling that will be used by a network node for performing downlink transmissions. This information is specific for SBFD resources of the at least one SBFD slot.
  • the user device may determine whether a current radio resource (e.g., time slot) is an SBFD slot of the at least one SBFD slot.
  • the user device may be configured by the network device the time and frequency resources that will be used by SBFD slots.
  • the user device may be configured with the resource of the SBFD slots via signalling from the network node.
  • the user device scales a measured downlink received power of a reference signal when it is determined that the current radio resource is an SBFD resource based on the received information at 701 on downlink transmission power scaling applied for SBFD resources.
  • Figure 8 illustrates another example to the form of the information provided to the user device (such as the user device described above with reference to Figure 1 or 3) for assisting the user device in determining when to apply a power offset value to a measured value obtained for a reference signal received power measurement.
  • the user device is preconfigured with a pattern (e.g., a sequence) that can be used by the user device for identifying which time slots (out of a plurality of time slots) will be used by a network node for performing downlink transmissions using a reduced power level relative to a nominal transmission power of the network node.
  • the pattern may be applied to only some of the SBFD slots or all of the SBFD slots.
  • the pattern may be applied to both SBFD slots and non-SBFD slots.
  • the user device may use this pattern to identify time slots in which the network node will transmit at reduced power compared to a nominal transmission power.
  • the user device may, when the user device determines that a reference signal received power measurement has been made within at least one of the identified time slots, apply the power offset value to the measured value obtained for the reference signal received power measurement to increase the measured value by the power offset value.
  • the user device determines that a RSRP measurement was performed during a time slot that was not identified by the pattern as being an identified time slot, the user device does not apply the power offset value to any RSRP measurement value obtained at the time slot.
  • a time pattern is provided to the user device (e.g. one value per slot in a time division duplex (TDD) UL-DL frame configuration or as an extension of the slot format indicator (SFI), discussed further below).
  • the user device subsequently applies the power scaling depending on the time of reception of a DL reference signal with respect to the indicated time pattern.
  • Aspects of the example of Figure 8 are illustrated with reference to 801 to 802.
  • the user device receives a time pattern (e.g., sequence) indicating DL transmission power scaling on one or more resource indices.
  • the user device scales the downlink received power of at least one reference signal (e.g., the CSI-RS or SSB) received in a resource index according to the indicated DL transmission power scaling in the resource index.
  • the information provided to the user device in the examples of Figures 7 and 8 can be provided to the user device using any of a plurality of different mechanisms.
  • radio resource control signalling may be used to provide the user device with this information.
  • downlink control information signalling may be used to provide the user device with this information.
  • RRC layer signalling may be used for semi-static signalling of power reductions applied for downlink transmissions in at least one SBFD slot of one or more SBFD slots.
  • the RRC layer signalling may comprise information indicating the SBFD power reduction in an RRC message that also informs the user device of the radio frame configuration.
  • the RRC signalling may comprise a mask that can be used with a resource grid indicating time and/or frequency resources to identify which SBFD slots in a radio frame are subject to the power reduction. This mask (or some other signalling comprised in the RRC signalling) may further indicate a value of the power reduction level being applied in the indicated slots.
  • a power reduction level e.g., a power offset value from a nominal transmission value of the network node
  • 01 a first power reduction (e.g., 3dB power reduction)
  • 10 a second power reduction (e.g., 6dB power reduction)
  • 11 a third power reduction (e.g., 9 dB power reduction).
  • the actual power reduction values e.g., power offsets
  • the RRC configuration can provide more detailed indication to the user device on what measurements to scale or not to scale. For example, in some cases the network node may actually want the CSI reports to take the power reduction into account (i.e. are not scaled) such that the network node can use the non-scaled CSI reports for PDSCH link adaptation on SBFD slots.
  • physical layer signalling of the power offset information is described. This type of signalling may be especially useful for dynamic signalling of the power offset information.
  • the physical layer signalling may be performed, for example, through downlink control information (DCI) signalling. This may be achieved, for example, by either adapting an existing DCI format, or by introducing a new DCI format. These are described further below.
  • DCI downlink control information
  • the signalling may be broadcast within a cell, and/or be signalled to a specific user device and/or a specific group of user device.
  • DCI format 2 is considered.
  • DCI format 2_0 appears in 3GPP TS 38.212, clause 7.3, and comprises a slot format indication (SFI).
  • SFI slot format indication
  • the SFI could be adapted or enhanced to comprise the power reduction (e.g., power offset) indication.
  • the SFI points to a larger table (and parameters) that is configured by RRC signalling (as described in more detail in 3GPP TS 38.331). As one example, this SFI signalling and table may be extended to include power reduction information.
  • the SFI may comprise a single bit that expresses whether power reduction is applied, while the actual value of the power reduction is configured by a RRC signalling when signalling parameter values of power reduce level for the table.
  • the DCI signalling may be adapted to comprise one or more bits that express the value of the power reduction (analogous to the example described above in relation to RRC signalling).
  • An example of how the power reduction may be indicated using DCI signalling when the value of the power reduction is configured using RRC signalling is indicated below.
  • the SBFD power reduction indicator may indicate if power reduction is applied for this slot or not.
  • F ield Bits Reference SBFD power reduction 1 0 – power reduction is indicator not applied 1 – power reduction is applied [106] An example of how the power reduction may be indicated using DCI signalling when the value of the power reduction is configured using DCI signalling is indicated below.
  • F ield Bits Reference SBFD power reduction 1 0 – power reduction is indicator not applied 1 – power reduction is applied Value of power 2 00: no power reduction reduction (optional) 01: 3dB 10: 6dB 11: 9dB [107]
  • a new DCI format could be defined that carries only information on SBFD network node power reduction.
  • the user device assumes that the network node is transmitting at the network node’s nominal transmission rate during SBFD slots and does not apply any power offset compensation factor to any reference signal received power that was measured during an SBFD slot.
  • the new DCI format is sent, the user device assumes that the network node is transmitting at a reduced power (relative to the network node’s nominal transmission power), and applies a power offset compensation factor to any reference signal received power that was measured during at least one SBFD slot.
  • the new DCI format may further comprise an indication that expresses the level of power reduction (e.g., one of 0, 3, 6, or 9dB).
  • a per-slot indication is provided in which the new DCI is decoded to obtain a value of power reduction, and the user device is configured to apply the power reduction value for this slot.
  • the new DCI may therefore comprise the following information.
  • the DCI is decoded by the user device to obtain a value of power reduction comprised therein, and the user device is configured to apply the power reduction value on all upcoming SBFD slots from a specified SBFD slot (e.g., a current SBFD slot, or from an SBFD slot that is x slots away from the current SBFD slots, where x may be preconfigured in the user device and/or signalled to the user device using RRC-layer signalling).
  • a specified SBFD slot e.g., a current SBFD slot, or from an SBFD slot that is x slots away from the current SBFD slots, where x may be preconfigured in the user device and/or signalled to the user device using RRC-layer signalling.
  • the new DCI there is provided a bit that indicates whether the SBFD power reduction is activated or deactivated.
  • the power reduction value may be derived based on the RRC configuration if the power reduction is activated instead of being provided in the new DCI.
  • the user device in response to receiving the DCI indicating activation of SBFD power reduction, the user device starts applying the derived power reduction value for SBFD slots. The UE continues to apply this power reduction value for measured RSRP values from reference signals in the SBFD slots until a new DCI is received that deactivates the application of the power reduction factor.
  • the user device When receiving the DCI indicating deactivation of SBFD power reduction, the user device assumes the power reduction is not applied for RSRP measurements made in subsequently scheduled SBFD slots. This may be indicated as described below.
  • F ield Bits Reference SBFD power reduction 1 0 – activated activation indicator 1– deactivated As another example of a new DCI, there may be provided a bit that indicates whether the SBFD power reduction is activated or deactivated, and the power reduction value may be derived from another bit comprised in the DCI for each configured SBFD slot.
  • the user device starts applying the derived power reduction value in respect of RSRP measurements made in SBFD slots.
  • UE After this SBFD power reduction is activated, UE keeps continues to apply the derived power reduction value before another DCI is received.
  • the user device When receiving the DCI indicating deactivation of SBFD power reduction, the user device assumes the power reduction is no longer to be applied for SBFD slots. This may be indicated as described below.
  • the RRC-based signalling option (or at least an option that comprises configuration via RRC-based signalling) may be especially useful (relative to the DCI-based signalling option) as the RRC signalling may provide additional information that indicates for which reference signals the power offset applies (e.g.1 bit for SSB, 1 bit for CSI-RS, etc.). This may be useful when the network node is configured to transmit only a portion of Synchronization Signal Blocks (SSBs) using its nominal transmission power.
  • SSBs Synchronization Signal Blocks
  • Any network node that is configured to make downlink transmissions during SBFD slots may be configured to determine whether to use transmit power reductions for downlink transmissions made during its SBFD slots.
  • Such a network node may also monitor the performance of uplink transmissions made to the network node during its SBFD slots in order to determine whether the uplink transmissions performed during an SBFD slot are being affected by CLI from concurrent downlink transmissions made within the same time slot. When it is determined that the uplink transmissions are affected by more than a threshold amount, the network node may start to lower the DL transmit power used by the network node during the SBFD slots.
  • Figures 9A to 9B illustrate various combinations of the above-mentioned features using example signalling diagrams between apparatus mentioned herein. It is understood that these examples are not exhaustive of the present disclosure, but are instead intended to showcase how at least some of the presently described techniques may be implemented.
  • Figure 9A illustrates signalling that may be performed between a user device 901 and a network node 902.
  • the user device 901 may be as described in reference to the user device of Figure 1 or 3.
  • the network node 902 may be as described in reference to the network device of Figure 1 or 2.
  • the network node 902 signals the user device 901.
  • This signalling 9001 may comprise radio resource information (e.g., SBFD slot information).
  • the radio resource information configures one or more SBFD slots in one or more radio frames.
  • the radio resource information may indicate a slot number and/or a time pattern and/or slot sequence.
  • This signalling 9001 may comprise power scaling information.
  • the power scaling information is to be applied to at least one SBFD slot of the one or more SBFD slots.
  • the power scaling information may be considered as comprising an activation indication that informs the user device that the network node will perform power scaling during the at least one SBFD slot. Stated differently, the power scaling information may comprise an indication that the network node will perform downlink transmissions at a reduced power during the at least one SBFD slot.
  • the power scaling information may include at least one identifier information of the at least one SBFD slots and/or at least one power scaling value corresponding to the at least one identifier of the at least one SBFD slots.
  • the at least one identifier information may be as discussed above with reference to signalling options for identifying which SBFD slots are to be affected by the power scaling operation.
  • the at least one identifier information of the at least one SBFD slot may specify (e.g., identify) the at least one SBFD slot out of a plurality of available SBFD slots (e.g., using a pattern, as discussed further above).
  • the at least one identifier information of the at least one SBFD slot may indicate that all SBFD slots will be affected by the at least one power scaling value.
  • the power scaling information may comprise, for example, a value of a power offset (or an indication of a value of the power offset) that will be used by the network node, such as the examples described above.
  • the signalling of 9001 may be provided using, for example, RRC signalling and/or DCI signalling.
  • the RRC signalling is done by a RRC message or a RRC information element.
  • the user device 901 performs a measurement based on the power scaling information. For example, the user device 901 determines a reference signal received power of at least one reference signal transmitted during the at least one SBFD slot. The measurement may be performed on CSI-RSs and/or SSBs.
  • the user device 901 upscales the value of the measurement obtained during 9002 by the value of the power offset (or, by the power scaling value) to obtain an upscaled value of the measurement.
  • the user device 901 may transmit a report comprising at least one of the upscaled value of the measurement and the result of the measurements to the network node.
  • the report may be a CSI report or a radio resource management (RRM) report.
  • RRM radio resource management
  • the network node 902 uses the reported upscaled value to perform a radio resource management mechanism. For example, the network node 902 uses the reported upscaled value to allocate (e.g., schedule) transmission resources for the user device. As another example, the network node 902 may determine whether to cause the user device to be handed over from a cell currently serving the user device to another cell.
  • the user device 901 may determine whether to perform a handover from a current cell to another cell based on a result of the measurement of 9002 and a result of the adjustment done during 9003.
  • Figure 9B illustrates signalling that may be performed between a user device 901’ and a network node 902’.
  • the network node 902’ signals the user device 901.
  • This signalling may comprise radio resource information (e.g., SBFD slot information) configuring one or more SBFD slots in one or more radio frames.
  • the radio resource information may indicate a slot number and/or a time pattern and/or slot sequence of the one or more SBFD slots.
  • the signalling of 9001 may be provided using, for example, a RRC message or a RRC IE.
  • the network node 902’ signals the user device 901’.
  • This signalling may comprise power scaling information.
  • the power scaling information is to be applied to at least one SBFD slot of the one or more SBFD slots.
  • the power scaling information may include at least one identifier information of the at least one SBFD slots and/or at least one power scaling value corresponding to the at least one identifier of the at least one SBFD slots.
  • the power scaling information may comprise, for example, an indication that the network node will perform downlink transmissions during at least one SBFD slot.
  • the power scaling information may comprise, for example, a value of a power offset (or an indication of a value of the power offset) that will be used by the network node, such as described above examples.
  • the signalling of 9002’ may be received via DCI.
  • the user device 901’ performs a measurement based on the power scaling information. For example, the user device 901’ determines a reference signal received power of a reference signal transmitted during the at least one SBFD slot. The measurement may be performed on a CSI-RS signal. The measurement may be performed on an SSB signal.
  • the user device 901’ upscales the value of the measurement obtained during 9002’ by the value of the power offset (or, by the power scaling value) to obtain an upscaled value of the measurement.
  • the user device 901’ may transmit a report comprising at least one of the upscaled value of the measurement or the result of the measurement to the network node.
  • the report may be a CSI report or a RRM report.
  • the network node 902’ uses the reported upscaled value to perform a radio resource management mechanism. For example, the network node 902 uses the reported upscaled value to allocate (e.g., schedule) transmission resources for the user device.
  • the network node 902 may determine whether to cause the user device to be handed over from a cell currently serving the user device to another cell.
  • the user device 901’ may determine whether to perform a handover from a current cell to another cell based on a result of the measurement of 9003’ and a result of the adjustment done during 9004’.
  • the user device receives power scaling information to be applied to at least one sub-band full duplexing, SBFD, slot of one or more SBFD slots.
  • the power scaling information may be received from a network node, such as the network node of Figure 11.
  • the user device performs a measurement on the at least one SBFD slot.
  • the measurement may comprise a measurement indicating a power of a received downlink reference signal during the at least one SBFD slot.
  • the type of reference signal may be as described above.
  • the measurement may comprise at least one of: a layer 1 (e.g., physical layer), L1, reference signal receive power, RSRP, measurement, a channel status information, CSI, based RSRP measurement, a synchronization signal, SS, based RSRP measurement, a layer 3 (e.g., RRC), L3, RSRP measurement, or a radio resource measurement, RRM, measurement.
  • a layer 1 e.g., physical layer
  • L1 reference signal receive power
  • RSRP measurement
  • measurement e.g., measurement
  • a channel status information CSI
  • based RSRP measurement e.g., synchronization signal
  • SS based RSRP measurement
  • a layer 3 e.g., RRC
  • L3 e.g., RRC
  • RRM radio resource measurement
  • the radio resource information may configure the at least one SBFD slot.
  • the radio resource information may be received via, for example, a radio resource control message and/or RRC information element.
  • the radio resource information configuring the one or more SBFD slots may comprise any information for configuring the one or more SBFD slots, including, for example, time and/or frequency resources that are to be used for SBFD slots.
  • the measurement may be used to determine a downlink pathloss.
  • the determined downlink pathloss may be used by the user device to control an uplink transmit power.
  • the user device may control an increase its uplink transmission power based on this determined pathloss (e.g., by Alpha times (PL_withoutpowerReduction + [determined path loss]) for this example), where the determined pathloss has compensated for a downlink power reduction, as discussed above.
  • the user device may be caused to transmit a report including at least one of the result of the measurement or the adjusted result of the measurement.
  • the actual measurement result transmitted may be determined according to a current user device configuration configured by the network node.
  • the network node may configure the user device to transmit, to the network node, a report that includes the result of the measurement performed during 1002.
  • the network node may configure the user device to transmit, to the network node, a report that includes the adjusted result of the measurement.
  • the user device may receive, from the network node, an indicator indicative of an activation or an inactivation of a power scaling on the at least one SBFD slot. For example, when the user device receives, from the network node, an indication that power scaling is to be activated, the user device may perform 1003. When the user device receives, from the network node, an indication that power scaling is to be deactivated (e.g., an inactivation of the power scaling), 1003 is no longer performed by the user device unless and until an indicator indicative of the activation is later received. [148] The result of the measurement may be adjusted by scaling a downlink received power of at least one of reference signals received in the at least one SBFD slot.
  • Figure 11 illustrates operations that may be performed by a network node.
  • the network node may be the network node of Figure 10.
  • the network node signals, to a user device, power scaling information to be applied to at least one sub-band full duplexing, SBFD, slot of one or more SBFD slots.
  • the network node applies said power scaling to the at least one SBFD slot for performing downlink transmissions. Stated differently, the network node reduces the power used for transmitting downlink in the at least one SBFD slot relative to the nominal power.
  • the network node is configured to determine a nominal power for transmitting downlink during SBFD slots (e.g., to determine a power used for transmitting downlink during previous SBFD slots), and to transmit downlink during the at least one SBFD slot using a reduced power relative to the nominal power.
  • the reduced power may be calculated by subtracting a power offset value from the value of the nominal power.
  • the downlink transmissions may be to the user device.
  • the network node may signal, to the user device, radio resource information for configuring the one or more SBFD slots. As the at least one SBFD slot is of the one or more SBFD slots, the radio resource information may configure the at least one SBFD slot.
  • the radio resource information may be received via, for example, a radio resource control message and/or RRC information element.
  • the radio resource information configuring the one or more SBFD slots may comprise any information for configuring the one or more SBFD slots, including, for example, time and/or frequency resources that are to be used for SBFD slots.
  • the network node may receive, from the user device, a report including at least one of a result of a measurement or an adjusted result of a measurement made based on the power scaling information.
  • the actual measurement result received may be determined according to a current user device configuration that was configured by the network node. For example, the network node may configure the user device to transmit, to the network node, a report that includes the result of the measurement performed during 1002.
  • the network node may configure the user device to transmit, to the network node, a report that includes the adjusted result of the measurement.
  • the network node may signal an indicator indicative of an activation or an inactivation of a power scaling on the at least one SBFD slot. For example, when the network node signals, to the user device, an indication that power scaling is to be activated, the user device may perform 1003. When the network node signals to the user device, an indication that power scaling is to be deactivated (e.g., an inactivation of the power scaling), 1003 is no longer performed by the user device unless and until an indicator indicative of the activation is later received.
  • an indication that power scaling is to be deactivated e.g., an inactivation of the power scaling
  • the power scaling information may include (e.g., comprise) at least one identifier information of the at least one SBFD slot.
  • the power scaling information may include (e.g., comprise) at least one power scaling value corresponding to the at least one identifier.
  • the power scaling information may comprise an identifier of the at least one SBFD slot in which the network node will transmit at a reduced power (e.g., perform the signalling of 1102) and/or an indication of the amount by which the downlink transmission power will be reduced during the at least one SBFD slot.
  • the amount by which the downlink transmission power will be reduced during the at least one SBFD slot may be indicated using a power offset value (or an indication, such as an index value thereof).
  • the power offset value may indicate a value by which the downlink transmission power will be reduced during the at least one SBFD slot relative to the nominal transmission power.
  • the power scaling information may be signalled via a radio resource control, RRC, message and/or a RRC information element.
  • the power scaling information may be signalled via downlink control information, DCI.
  • the power scaling information may indicate whether a power scaling is applied or not at the at least one SBFD slot.
  • the power scaling information may comprise information indicative of one of power scaling values (e.g., information of one of power offset values) to be applied to adjust the result of the measurement.
  • the power scaling values may be preconfigured at the user device, such that information indicative of one of the power scaling values selects one of these preconfigured values.
  • the information indicative of the one of power scaling values may comprise an index value, such as described above.
  • a type of the DCI may comprise a group common DCI or a cell specific DCI format.
  • the power scaling information may include pattern information indicating location of the at least one SBFD slot.
  • the power scaling information may comprise information that may be used for identifying the at least one SBFD slot out of the one or more SBFD slots previously configured at the user device.
  • the pattern information may indicate the location and/or SBFD slot indexes in which the power scaling of 1102 will be applied.
  • the termination of the power reduction may be signalled to the user device applied in a plurality of different ways.
  • the user device may be provided with an indication of a slot in which the power reduction will stop being applied (as per 1102) during the signalling of 1101.
  • the user device may be provided with an indication of a slot in which the power reduction will stop being applied during later signalling to the signalling of 1101.
  • the user device may be provided with an indication of a time duration for which the power reduction of 1102 will be applied during a configuration of the user device (e.g., via RRC signalling).
  • the above-described network node-to-user device signaling of the SBFD power reductions may be standardized by 3GPP. This standardization may affect the RRC specifications when the semi-static (e.g., RRC) signalling option is performed, and/or the PHY specifications if pursuing the dynamic (e.g., DCI-based) option. The following discusses changes that may be made to such specifications, and illustrates how the presently described techniques may be reflected therein.
  • the terminal may upscale its Layer-1 RSRP samples in the SBFD slots by X dB, for those where the network node applies X dB Tx power reduction. By doing so, the RSRP measurements will be unaffected by the network node Tx power reduction in SBFD slots, and hence, the user device will still estimate the correct pathloss value that it uses for its open loop TPC. Secondly, as the RSRP will remain unaffected by the X dB power reduction in the SBFD slots, the user device will not trigger unnecessary early handovers. [165] A similar procedure to that described above and in the following in reference to CSI-RS may also be applied to Layer-1 RSRP measurements performed on synchronization signals (denoted SS-RSRP).
  • CSI-RSRP CSI reference signal received power
  • CSI-RSRP is defined as the linear average over the power contributions (in [W]) of the resource elements of the antenna port(s) that carry CSI reference signals configured for RSRP measurements within the considered measurement frequency bandwidth in the configured CSI-RS occasions.
  • CSI reference signals transmitted on antenna p ort 3000 according to TS 38.211 [4] shall be used. If CSI-RSRP is used for L1-RSRP, CSI reference signals transmitted on antenna ports 3000, 3001 can be used for CSI-RSRP determination.
  • the reference point for the CSI-RSRP shall be the antenna connector of the user device.
  • CSI-RSRP shall be measured based on the combined signal from antenna elements corresponding to a given receiver branch.
  • the reported CSI-RSRP value shall not be lower than the corresponding CSI-RSRP of any of the individual receiver branches.
  • the measurement shall be upscaled by X dB.
  • CSI-RSRP is used for L1-RSRP, for RRC_CONNECTED intra-frequency. Otherwise, RRC_CONNECTED intra-frequency, RRC_CONNECTED inter-frequency
  • the various examples may be implemented in hardware or special purpose circuitry, software, logic or any combination thereof. Some aspects of the disclosure may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device, although the disclosure is not limited thereto.
  • circuitry may refer to one or more or all of the following: ( a) hardware-only circuit implementations (such as implementations in only analog and/or digital circuitry) and ( b) combinations of hardware circuits and software, such as (as applicable): (c) a combination of analog and/or digital hardware circuit(s) with software/firmware and ( d) any portions of hardware processor(s) with software (including digital signal processor(s)), software, and memory(ies) that work together to cause an apparatus, such as a mobile phone or server, to perform various functions) and ( e) hardware circuit(s) and or processor(s), such as a microprocessor(s) or a portion of a microprocessor(s), that requires software (e.g., firmware) for operation, but the software may not be present when it is not needed for operation.
  • hardware-only circuit implementations such as implementations in only analog and/or digital circuitry
  • combinations of hardware circuits and software such as (as applicable): (c) a combination of analog and/or digital hardware
  • circuitry also covers an implementation of merely a hardware circuit or processor (or multiple processors) or portion of a hardware circuit or processor and its (or their) accompanying software and/or firmware.
  • circuitry also covers, for example and if applicable to the particular claim element, a baseband integrated circuit or processor integrated circuit for a mobile device or a similar integrated circuit in server, a cellular network device, or other computing or network device.
  • the embodiments of this disclosure may be implemented by computer software executable by a data processor of the mobile device, such as in the processor entity, or by hardware, or by a combination of software and hardware.
  • Computer software or program also called program product, including software routines, applets and/or macros, may be stored in any apparatus-readable data storage medium and they comprise program instructions to perform particular tasks.
  • a computer program product may comprise one or more computer-executable components which, when the program is run, are configured to carry out embodiments.
  • the one or more computer-executable components may be at least one software code or portions of it.
  • the software may be stored on such physical media as memory chips, or memory blocks implemented within the processor, magnetic media such as hard disk or floppy disks, and optical media such as for example DVD and the data variants thereof, CD.
  • the physical media is a non-transitory media.
  • the term “non-transitory,” as used herein, is a limitation of the medium itself (i.e., tangible, not a signal) as opposed to a limitation on data storage persistency (e.g., RAM vs. ROM).
  • the memory may be of any type suitable to the local technical environment and may 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.
  • the data processors may be of any type suitable to the local technical environment, and may comprise one or more of general-purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs), application specific integrated circuits (ASIC), FPGA, gate level circuits and processors based on multi core processor architecture, as non-limiting examples.
  • Embodiments of the disclosure may be practiced in various components such as integrated circuit modules. The design of integrated circuits is by and large a highly automated process. Complex and powerful software tools are available for converting a logic level design into a semiconductor circuit design ready to be etched and formed on a semiconductor substrate. [178] The scope of protection sought for various embodiments of the disclosure is set out by the independent claims.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé, un programme informatique et un appareil pour amener un dispositif utilisateur à effectuer : la réception d'informations de mise à l'échelle de puissance à appliquer à au moins un créneau de duplexage complet de sous-bande, SBFD, d'un ou de plusieurs créneaux SBFD ; la réalisation d'une mesure sur le ou les créneaux SBFD ; et l'ajustement d'un résultat de la mesure sur la base des informations de mise à l'échelle de puissance.
PCT/EP2024/078230 2023-11-24 2024-10-08 Procédé, appareil et programme informatique Pending WO2025108613A1 (fr)

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FI20236305 2023-11-24
FI20236305 2023-11-24

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WO2025108613A1 true WO2025108613A1 (fr) 2025-05-30

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023014089A1 (fr) * 2021-08-04 2023-02-09 Samsung Electronics Co., Ltd. Procédé et appareil pour effectuer un accès aléatoire sur la base d'un système duplex intégral dans un système de communication sans fil
WO2023195816A1 (fr) * 2022-04-08 2023-10-12 Samsung Electronics Co., Ltd. Puissance de transmission et de réception dans des systèmes en duplex intégral

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023014089A1 (fr) * 2021-08-04 2023-02-09 Samsung Electronics Co., Ltd. Procédé et appareil pour effectuer un accès aléatoire sur la base d'un système duplex intégral dans un système de communication sans fil
WO2023195816A1 (fr) * 2022-04-08 2023-10-12 Samsung Electronics Co., Ltd. Puissance de transmission et de réception dans des systèmes en duplex intégral

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
INTERDIGITAL ET AL: "Discussion on subband non-overlapping full duplex", vol. RAN WG1, no. e-Meeting; 20221010 - 20221019, 30 September 2022 (2022-09-30), XP052276947, Retrieved from the Internet <URL:https://ftp.3gpp.org/tsg_ran/WG1_RL1/TSGR1_110b-e/Docs/R1-2209028.zip R1-2209028 Discussion on SBFD operations for NR-duplex.docx> [retrieved on 20220930] *
QUALCOMM INCORPORATED: "On potential enhancements on dynamic/flexible TDD", vol. 3GPP RAN 1, no. e-Meeting; 20230417 - 20230426, 7 April 2023 (2023-04-07), XP052353047, Retrieved from the Internet <URL:https://ftp.3gpp.org/tsg_ran/WG1_RL1/TSGR1_112b-e/Docs/R1-2303590.zip R1-2303590 On potential enhancements on dynamic, flexible TDD.docx> [retrieved on 20230407] *

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