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WO2022165744A1 - Signalisation de la puissance de transmission d'un bloc de signaux de synchronisation d'une cellule non de desserte - Google Patents

Signalisation de la puissance de transmission d'un bloc de signaux de synchronisation d'une cellule non de desserte Download PDF

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Publication number
WO2022165744A1
WO2022165744A1 PCT/CN2021/075480 CN2021075480W WO2022165744A1 WO 2022165744 A1 WO2022165744 A1 WO 2022165744A1 CN 2021075480 W CN2021075480 W CN 2021075480W WO 2022165744 A1 WO2022165744 A1 WO 2022165744A1
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WIPO (PCT)
Prior art keywords
serving cell
indication
transmission power
additional
trp
Prior art date
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Ceased
Application number
PCT/CN2021/075480
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English (en)
Inventor
Yan Zhou
Fang Yuan
Tao Luo
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Qualcomm Inc
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Qualcomm Inc
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Publication date
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Priority to PCT/CN2021/075480 priority Critical patent/WO2022165744A1/fr
Publication of WO2022165744A1 publication Critical patent/WO2022165744A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/146—Uplink power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
    • H04W52/32—TPC of broadcast or control channels
    • H04W52/322—Power control of broadcast channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/38—TPC being performed in particular situations
    • H04W52/50—TPC being performed in particular situations at the moment of starting communication in a multiple access environment
    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT the frequencies being arranged in component carriers
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035—Resource allocation in a cooperative multipoint environment

Definitions

  • aspects of the present disclosure generally relate to wireless communication and specifically, to techniques and apparatuses for signaling synchronization signal block transmission power of a non-serving cell.
  • Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts.
  • Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (for example, bandwidth or transmit power) .
  • multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency-division multiple access (FDMA) systems, orthogonal frequency-division multiple access (OFDMA) systems, single-carrier frequency-division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE) .
  • LTE/LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP) .
  • UMTS Universal Mobile Telecommunications System
  • New Radio which may also be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by the 3GPP.
  • NR is designed to better support mobile broadband Internet access by improving spectral efficiency, lowering costs, improving services, making use of new spectrum, and better integrating with other open standards using orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the downlink (DL) , using CP-OFDM or SC-FDMA (for example, also known as discrete Fourier transform spread OFDM (DFT-s-OFDM) ) on the uplink (UL) , as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation.
  • OFDM orthogonal frequency division multiplexing
  • SC-FDMA for example, also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)
  • MIMO multiple-input multiple-output
  • a UE configured for inter-cell multi-downlink control information based multi-transmit-receive point (TRP) operation may use blind detection to obtain synchronization signal block (SSB) information such as SSB transmission power associated with a serving cell.
  • the UE also may use blind detection to obtain SSB transmission power associated with a non-serving cell.
  • SSB synchronization signal block
  • performing blind detection associated with a non-serving cell in addition to performing blind detection associated with one or more serving cells may unnecessarily increase the complexity of operations of the UE. As a result, performing blind detection associated with a non-serving cell may have a negative impact on network performance and/or UE performance.
  • a user equipment (UE) for wireless communication includes a memory and one or more processors coupled to the memory.
  • the memory and the one or more processors are configured to receive, from a first transmit-receive point (TRP) associated with a serving cell, an indication of a synchronization signal block (SSB) transmission power associated with a non-serving cell.
  • the memory and the one or more processors are configured to communicate with a second TRP associated with the non-serving cell based at least in part on the indication of the SSB transmission power.
  • TRP transmit-receive point
  • SSB synchronization signal block
  • a first TRP for wireless communication includes a memory and one or more processors coupled to the memory.
  • the memory and the one or more processors are configured to determine an SSB transmission power associated with a non-serving cell.
  • the memory and the one or more processors are further configured to transmit, to a UE, an indication of the SSB transmission power associated with the non-serving cell to support communication between the UE and a second TRP associated with the non-serving cell.
  • a method of wireless communication performed by a UE includes receiving, from a first TRP associated with a serving cell, an indication of an SSB transmission power associated with a non-serving cell. The method also includes communicating with a second TRP associated with the non-serving cell based at least in part on the indication of the SSB transmission power.
  • a method of wireless communication performed by a first TRP associated with a serving cell includes determining an SSB transmission power associated with a non-serving cell. The method also includes transmitting, to a UE, an indication of the SSB transmission power associated with the non-serving cell to support communication between the UE and a second TRP associated with the non-serving cell.
  • a non-transitory computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a UE, cause the UE to receive, from a first TRP associated with a serving cell, an indication of an SSB transmission power associated with a non-serving cell.
  • the one or more instructions also cause the UE to communicate with a second TRP associated with the non-serving cell based at least in part on the indication of the SSB transmission power.
  • a non-transitory computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of an first TRP, cause the first TRP to determine an SSB transmission power associated with a non-serving cell.
  • the one or more instructions also cause the first TRP to transmit, to a UE, an indication of the SSB transmission power associated with the non-serving cell to support communication between the UE and a second TRP associated with the non-serving cell.
  • an apparatus for wireless communication includes means for receiving, from a first TRP associated with a serving cell, an indication of an SSB transmission power associated with a non-serving cell.
  • the apparatus also includes means for communicating with a second TRP associated with the non-serving cell based at least in part on the indication of the SSB transmission power.
  • an apparatus for wireless communication includes means for determining an SSB transmission power associated with a non-serving cell.
  • the apparatus also includes means for transmitting, to a UE, an indication of the SSB transmission power associated with the non-serving cell to support communication between the UE and a second TRP associated with the non-serving cell.
  • aspects generally include a method, apparatus, system, computer program product, non-transitory computer-readable medium, user equipment, base station, wireless communication device, or processing system as substantially described with reference to and as illustrated by the drawings and specification.
  • Figure 1 is a diagram illustrating an example of a wireless network in accordance with the present disclosure.
  • FIG. 2 is a diagram illustrating an example base station (BS) in communication with a user equipment (UE) in a wireless network in accordance with the present disclosure.
  • BS base station
  • UE user equipment
  • FIG. 3 is a diagram illustrating an example of inter-cell multi-downlink control information (DCI) multi-transmit-receive point (TRP) operation in accordance with the present disclosure.
  • DCI inter-cell multi-downlink control information
  • TRP transmit-receive point
  • Figure 4 is a diagram illustrating an example associated with signaling synchronization signal block (SSB) transmission power of a non-serving cell, in accordance with the present disclosure.
  • SSB signaling synchronization signal block
  • Figure 5 is a flowchart illustrating an example process performed, for example, by a UE that supports receiving SSB transmission power of non-serving cells in accordance with the present disclosure.
  • Figure 6 is a flowchart illustrating an example process performed, for example, by a base station that supports receiving SSB transmission power of non-serving cells in accordance with the present disclosure.
  • Figures 7 and 8 are block diagrams of example apparatuses for wireless communication that support receiving SSB transmission power of non-serving cells in accordance with the present disclosure.
  • Various aspects relate generally to signaling to provide a UE with synchronization signal block (SSB) transmission power information associated with a non-serving cell. Some aspects more specifically relate to indicating an SSB transmission power associated with a non-serving cell to support inter-cell multi-downlink control information (DCI) based multi-transmit-receive point (mTRP) operation.
  • the UE may communicate with a second TRP associated with the non-serving cell based at least in part on the indication of the SSB transmission power.
  • the indication of the SSB transmission power may include an indication of a primary synchronization signal (PSS) transmission power or an indication of a secondary synchronization signal (SSS) transmission power.
  • the indication of the SSB transmission power may include a relative indication with respect to an SSB transmission power of the serving cell.
  • the described techniques can be used to provide a UE with non-serving cell SSB information that the UE can use to facilitate inter-cell mTRP operation without increasing complexity of the UE since the SSB information is signaled to the UE instead of being determined through a blind detection process performed by the UE.
  • the described techniques can be used to indicate the non-serving cell SSB transmission power information using relative information, thereby reducing signaling overhead.
  • FIG. 1 is a diagram illustrating an example of a wireless network in accordance with the present disclosure.
  • the wireless network may be or may include elements of a 5G (NR) network or an LTE network, among other examples.
  • the wireless network may include one or more base stations 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities.
  • a base station (BS) is an entity that communicates with user equipment (UEs) and may also be referred to as an NR BS, a Node B, a gNB, a 5G node B (NB) , an access point, or a TRP, among other examples.
  • Each BS may provide communication coverage for a particular geographic area.
  • the term “cell” can refer to a coverage area of a BS or a BS subsystem serving this coverage area, depending on the context in which the term is used.
  • a BS may provide communication coverage for a macro cell, a pico cell, a femto cell, or another type of cell.
  • a macro cell may cover a relatively large geographic area (for example, several kilometers in radius) and may allow unrestricted access by UEs with service subscription.
  • a pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscription.
  • a femto cell may cover a relatively small geographic area (for example, a home) and may allow restricted access by UEs having association with the femto cell (for example, UEs in a closed subscriber group (CSG) ) .
  • a BS for a macro cell may be referred to as a macro BS.
  • a BS for a pico cell may be referred to as a pico BS.
  • a BS for a femto cell may be referred to as a femto BS or a home BS.
  • a BS may support one or multiple (for example, three) cells.
  • the wireless network may be a heterogeneous network that includes BSs of different types, such as macro BSs, pico BSs, femto BSs, or relay BSs. These different types of BSs may have different transmit power levels, different coverage areas, and different impacts on interference in the wireless network. For example, macro BSs may have a high transmit power level (for example, 5 to 40 watts) whereas pico BSs, femto BSs, and relay BSs may have lower transmit power levels (for example, 0.1 to 2 watts) .
  • macro BSs may have a high transmit power level (for example, 5 to 40 watts) whereas pico BSs, femto BSs, and relay BSs may have lower transmit power levels (for example, 0.1 to 2 watts) .
  • a BS 110a may be a macro BS for a macro cell 102a
  • a BS 110b may be a pico BS for a pico cell 102b
  • a BS 110c may be a femto BS for a femto cell 102c.
  • a network controller 130 may couple to the set of BSs 110a, 110b, and 110d, and may provide coordination and control for these BSs.
  • Network controller 130 may communicate with the BSs via a backhaul.
  • the BSs may also communicate with one another, for example, directly or indirectly via a wireless or wireline backhaul.
  • a cell may not be stationary, rather, the geographic area of the cell may move in accordance with the location of a mobile BS.
  • the BSs may be interconnected to one another or to one or more other BSs or network nodes (not shown) in the wireless network through various types of backhaul interfaces, such as a direct physical connection or a virtual network, using any suitable transport network.
  • the wireless network may also include relay stations.
  • a relay station is an entity that can receive a transmission of data from an upstream station (for example, a BS or a UE) and send a transmission of the data to a downstream station (for example, a UE or a BS) .
  • a relay station may also be a UE that can relay transmissions for other UEs.
  • a relay BS 110d may communicate with macro BS 110a and a UE 120d in order to facilitate communication between BS 110a and UE 120d.
  • a relay BS may also be referred to as a relay station, a relay base station, or a relay, among other examples.
  • UEs 120 may be dispersed throughout the wireless network, and each UE may be stationary or mobile.
  • a UE may also be referred to as an access terminal, a terminal, a mobile station, a subscriber unit, or a station, among other examples.
  • a UE may be a cellular phone (for example, a smart phone) , a personal digital assistant (PDA) , a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or equipment, biometric sensors/devices, wearable devices (smart watches, smart clothing, smart glasses, smart wrist bands, smart jewelry (for example, smart ring, smart bracelet) ) , an entertainment device (for example, a music or video device, or a satellite radio) , a vehicular component or sensor, smart meters/sensors, industrial manufacturing equipment, a global positioning system device, or any other suitable device that is configured to communicate via a wireless medium.
  • PDA personal digital assistant
  • WLL wireless local loop
  • Some UEs may be considered machine-type communication (MTC) or evolved or enhanced machine-type communication (eMTC) UEs.
  • MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors or location tags, among other examples, that may communicate with a base station, another device (for example, remote device) , or some other entity.
  • a wireless node may provide, for example, connectivity for or to a network (for example, a wide area network such as Internet or a cellular network) via a wired or wireless communication link.
  • Some UEs may be considered Internet-of-Things (IoT) devices, or may be implemented as NB-IoT (narrowband internet of things) devices.
  • Some UEs may be considered a Customer Premises Equipment (CPE) .
  • UE 120 may be included inside a housing that houses components of UE 120, such as processor components or memory components, among other examples.
  • any quantity of wireless networks may be deployed in a given geographic area.
  • Each wireless network may support a particular radio access technology (RAT) and may operate on one or more frequencies or frequency channels.
  • RAT radio access technology
  • a frequency may also be referred to as a carrier among other examples.
  • Each frequency may support a single RAT in a given geographic area in order to avoid interference between wireless networks of different RATs.
  • NR or 5G RAT networks may be deployed.
  • two or more UEs 120 may communicate directly with one another using one or more sidelink channels (for example, without using a base station 110 as an intermediary) .
  • the UEs 120 may communicate using peer-to-peer (P2P) communications, device-to-device (D2D) communications, a vehicle-to-everything (V2X) protocol (for example, which may include a vehicle-to-vehicle (V2V) protocol or a vehicle-to-infrastructure (V2I) protocol) , a mesh network, or a combination thereof.
  • V2X vehicle-to-everything
  • the UE 120 may perform scheduling operations, resource selection operations, or other operations described elsewhere herein as being performed by the base station 110.
  • Devices of the wireless network may communicate using the electromagnetic spectrum, which may be subdivided based on frequency or wavelength into various classes, bands, or channels.
  • devices of the wireless network may communicate using an operating band having a first frequency range (FR1) , which may span from 410 MHz to 7.125 GHz.
  • devices of the wireless network may communicate using an operating band having a second frequency range (FR2) , which may span from 24.25 GHz to 52.6 GHz.
  • FR1 and FR2 are sometimes referred to as mid-band frequencies.
  • FR1 is often referred to as a “sub-6 GHz” band.
  • FR2 is often referred to as a “millimeter wave” band despite being different from the extremely high frequency (EHF) band (30 GHz –300 GHz) which is identified by the International Telecommunications Union (ITU) as a “millimeter wave” band.
  • EHF extremely high frequency
  • sub-6 GHz may broadly represent frequencies less than 6 GHz, frequencies within FR1, mid-band frequencies (for example, greater than 7.125 GHz) , or a combination thereof.
  • millimeter wave may broadly represent frequencies within the EHF band, frequencies within FR2, mid-band frequencies (for example, less than 24.25 GHz) , or a combination thereof.
  • the frequencies included in FR1 and FR2 may be modified, and techniques described herein are applicable to those modified frequency ranges.
  • FIG 2 is a diagram illustrating an example base station in communication with a UE in a wireless network in accordance with the present disclosure.
  • the base station may correspond to base station 110 of Figure 1.
  • the UE may correspond to UE 120 of Figure 1.
  • Base station 110 may be equipped with T antennas 234a through 234t, and UE 120 may be equipped with R antennas 252a through 252r, where in general T ⁇ 1 and R ⁇ 1.
  • a transmit processor 220 may receive data from a data source 212 for one or more UEs, select one or more modulation and coding schemes (MCSs) for each UE based at least in part on channel quality indicators (CQIs) received from the UE, process (for example, encode) the data for each UE based at least in part on the MCS (s) selected for the UE, and provide data symbols for all UEs.
  • MCSs modulation and coding schemes
  • Transmit processor 220 may also process system information (for example, for semi-static resource partitioning information (SRPI) among other examples) and control information (for example, CQI requests, grants, or upper layer signaling) and provide overhead symbols and control symbols. Transmit processor 220 may also generate reference symbols for reference signals and synchronization signals.
  • a transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (for example, precoding) on the data symbols, the control symbols, the overhead symbols, or the reference symbols, if applicable, and may provide T output symbol streams to T modulators (MODs) 232a through 232t. Each MOD 232 may process a respective output symbol stream (for example, for OFDM among other examples) to obtain an output sample stream.
  • TX transmit
  • MIMO multiple-input multiple-output
  • Each MOD 232 may process a respective output symbol stream (for example, for OFDM among other examples) to obtain an output sample stream.
  • Each MOD 232 may further process (for example, convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal.
  • T downlink signals from MODs 232a through 232t may be transmitted via T antennas 234a through 234t, respectively.
  • antennas 252a through 252r may receive the downlink signals from base station 110 or other base stations and may provide received signals to R demodulators (DEMODs) 254a through 254r, respectively.
  • Each DEMOD 254 may condition (for example, filter, amplify, downconvert, and digitize) a received signal to obtain input samples.
  • Each DEMOD 254 may further process the input samples (for example, for OFDM) to obtain received symbols.
  • a MIMO detector 256 may obtain received symbols from all R DEMODs 254a through 254r, perform MIMO detection on the received symbols if applicable, and provide detected symbols.
  • a receive processor 258 may process (for example, decode) the detected symbols, provide decoded data for UE 120 to a data sink 260, and provide decoded control information and system information to a controller/processor 280.
  • controller/processor may refer to one or more controllers, one or more processors, or a combination of one or more controllers and one or more processors.
  • a channel processor may determine one or more of a reference signal received power (RSRP) parameter, a received signal strength indicator (RSSI) parameter, a reference signal received quality (RSRQ) parameter, or a CQI parameter, among other examples.
  • RSRP reference signal received power
  • RSSI received signal strength indicator
  • RSSQ reference signal received quality
  • CQI parameter CQI parameter
  • Network controller 130 may include communication unit 294, controller/processor 290, and memory 292.
  • Network controller 130 may include, for example, one or more devices in a core network.
  • Network controller 130 may communicate with base station 110 via communication unit 294.
  • Antennas may include, or may be included within, one or more antenna panels, antenna groups, sets of antenna elements, or antenna arrays, among other examples.
  • An antenna panel, an antenna group, a set of antenna elements, or an antenna array may include one or more antenna elements.
  • An antenna panel, an antenna group, a set of antenna elements, or an antenna array may include a set of coplanar antenna elements or a set of non-coplanar antenna elements.
  • An antenna panel, an antenna group, a set of antenna elements, or an antenna array may include antenna elements within a single housing or antenna elements within multiple housings.
  • An antenna panel, an antenna group, a set of antenna elements, or an antenna array may include one or more antenna elements coupled to one or more transmission or reception components, such as one or more components of Figure 2.
  • a transmit processor 264 may receive and process data from a data source 262 as well as control information (for example, for reports including RSRP, RSSI, RSRQ, or CQI) from controller/processor 280. Transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from transmit processor 264 may be precoded by a TX MIMO processor 266 if applicable, further processed by MODs 254a through 254r (for example, for discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) or orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) ) , and transmitted to base station 110.
  • DFT-s-OFDM discrete Fourier transform spread orthogonal frequency division multiplexing
  • OFDM orthogonal frequency division multiplexing
  • CP-OFDM cyclic prefix
  • a modulator and a demodulator (for example, MOD/DEMOD 254) of the UE 120 may be included in a modem of the UE 120.
  • the UE 120 includes a transceiver.
  • the transceiver may include any combination of antenna (s) 252, modulators 254, demodulators 254, MIMO detector 256, receive processor 258, transmit processor 264, or TX MIMO processor 266.
  • the transceiver may be used by a processor (for example, controller/processor 280) and memory 282 to perform aspects of any of the methods described herein.
  • the uplink signals from UE 120 and other UEs may be received by antennas 234, processed by DEMODs 232, detected by a MIMO detector 236 if applicable, and further processed by a receive processor 238 to obtain decoded data and control information sent by UE 120.
  • Receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to controller/processor 240.
  • Base station 110 may include communication unit 244 and communicate to network controller 130 via communication unit 244.
  • Base station 110 may include a scheduler 246 to schedule UEs 120 for downlink and uplink communications.
  • a modulator and a demodulator (for example, MOD/DEMOD 232) of the base station 110 may be included in a modem of the base station 110.
  • the base station 110 includes a transceiver.
  • the transceiver may include any combination of antenna (s) 234, modulators 232, demodulators 232, MIMO detector 236, receive processor 238, transmit processor 220, or TX MIMO processor 230.
  • the transceiver may be used by a processor (for example, controller/processor 240) and memory 242 to perform aspects of any of the methods described herein.
  • Controller/processor 240 of base station 110, controller/processor 280 of UE 120, or any other component (s) of Figure 2 may perform one or more techniques associated with signaling SSB transmission power of a non-serving cell, as described in more detail elsewhere herein.
  • the TRP described herein is the base station 110, is included in the base station 110, or includes one or more components of the base station 110 shown in Figure 2.
  • controller/processor 240 of base station 110, controller/processor 280 of UE 120, or any other component (s) of Figure 2 may perform or direct operations of, for example, process 500 of Figure 5, process 600 of Figure 6, or other processes as described herein.
  • Memories 242 and 282 may store data and program codes for base station 110 and UE 120, respectively.
  • memory 242 or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (for example, code or program code) for wireless communication.
  • the one or more instructions when executed (for example, directly, or after compiling, converting, or interpreting) by one or more processors of the base station 110 or the UE 120, may cause the one or more processors, the UE 120, or the base station 110 to perform or direct operations of, for example, process 500 of Figure 5, process 600 of Figure 6, or other processes as described herein.
  • executing instructions may include running the instructions, converting the instructions, compiling the instructions, or interpreting the instructions, among other examples.
  • the UE includes means for receiving, from a first TRP associated with a serving cell, an indication of an SSB transmission power associated with a non-serving cell; or means for communicating with a second TRP associated with the non-serving cell based at least in part on the indication of the SSB transmission power.
  • the means for the UE to perform operations described herein may include, for example, one or more of antenna 252, demodulator 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, modulator 254, controller/processor 280, or memory 282.
  • the UE includes means for receiving a second DCI transmission from the first TRP. In some aspects, the UE includes means for receiving an indication of an additional SSB transmission power associated with an additional non-serving cell, wherein the indication of the additional SSB transmission power indicates an additional energy per resource element (EPRE) ratio corresponding to the additional non-serving cell. In some aspects, the UE includes means for receiving an indication of an additional SSB transmission power associated with an additional non-serving cell, wherein the indication of the additional SSB transmission power indicates an additional synchronization signal physical broadcast channel block power (ss-PBCH-BlockPower) value corresponding to the additional non-serving cell.
  • ss-PBCH-BlockPower additional synchronization signal physical broadcast channel block power
  • the first TRP includes means for determining an SSB transmission power associated with a non-serving cell; or means for transmitting, to a UE, an indication of the SSB transmission power associated with the non-serving cell to support communication between the UE and a second TRP associated with the non-serving cell.
  • the means for the first TRP to perform operations described herein may include, for example, one or more of transmit processor 220, TX MIMO processor 230, modulator 232, antenna 234, demodulator 232, MIMO detector 236, receive processor 238, controller/processor 240, memory 242, or scheduler 246.
  • the first TRP includes means for transmitting a first DCI transmission to the UE. In some aspects, the first TRP includes means for transmitting an indication of an additional SSB transmission power associated with an additional non-serving cell, wherein the indication of the additional SSB transmission power indicates an additional EPRE ratio corresponding to the additional non-serving cell. In some aspects, the first TRP includes means for transmitting an indication of an additional SSB transmission power associated with an additional non-serving cell, wherein the indication of the additional SSB transmission power indicates an additional ss-PBCH-BlockPower value corresponding to the additional non-serving cell.
  • FIG 3 is a diagram illustrating an example 300 of inter-cell multi-DCI based mTRP operation in accordance with the present disclosure.
  • a UE 305 may communicate with a first TRP 310 and a second TRP 315.
  • the UE 305 may be, or be similar to, the UE 120 shown in Figure 1.
  • the first TRP 310 or the second TRP 315 may be, or be similar to, the base station 110 shown in Figure 1.
  • the UE 305 may communicate with any quantity of additional TRPs not shown.
  • the UE 305 may be configured with multi-DCI based multi-TRP operation. As shown, when configured with multi-DCI based multi-TRP operation, the UE 305 may receive, from the first TRP 310, a first DCI transmission 320 in a first physical downlink control channel (PDCCH) transmission (shown as “PDCCH1” ) , where the first DCI transmission 320 may schedule a first physical downlink shared channel (PDSCH) transmission 325 to be transmitted by the first TRP 310.
  • PDCCH physical downlink control channel
  • the UE 305 may receive, from the second TRP 315, a second DCI transmission 330 in a second PDCCH (shown as “PDCCH2” ) , where the second DCI transmission 330 may schedule a second PDSCH transmission 335 to be transmitted by the second TRP 315.
  • the UE 305 may monitor PDCCH candidates in PDCCH monitoring occasions in a quantity of different core resource sets (CORESETs) , as configured by the network.
  • CORESETs core resource sets
  • the first TRP 310 may be associated with a serving cell of the UE 305.
  • the first TRP 310 may be a base station that provides the serving cell or a relay device that provides access to the serving cell.
  • a quantity of additional TRPs may be associated with a quantity of additional serving cells.
  • the second TRP 315 may be associated with a non-serving cell.
  • the UE 305 may acquire beam indications for beam selection based on a transmission configuration indication (TCI) state.
  • TCI transmission configuration indication
  • SSB information may be used to perform channel measurement, obtain TCI state, or select beams for communication.
  • the UE 305 may obtain SSB transmission position, SSB transmission periodicity, and SSB transmission power associated with the cell and use that information to facilitate receiving and decoding a DCI transmission.
  • An SSB may include a PSS, a SSS, and a physical broadcast channel (PBCH) demodulation reference signal (DMRS) .
  • SSB transmission power may include a PSS transmission power, an SSS transmission power, and a PBCH DMRS transmission power.
  • the SSS transmission power and the PBCH DMRS transmission power may be indicated by an ss-PBCH-BlockPower parameter.
  • the ss-PBCH-BlockPower parameter may, for example, be set to an integer value that indicates the SSS transmission power and the PBCH DMRS transmission power.
  • the PSS transmission power may be determined based on a ratio of a PSS EPRE to an SSS EPRE in a synchronization signal (SS) /PBCH block.
  • a UE may assume, based on a wireless communication standard, that the ratio has a value of either 0 decibels (dB) or 3 dB, and the PSS transmission power may be determined based on the value of the ratio. For example, the UE may determine the SSS transmission power based on the ss-PBCH-BlockPower parameter, and may determine the SSS EPRE based on the SSS transmission power and number of resource elements (REs) transmitted. Using the determined SSS EPRE and the value of the ratio described above, the UE may determine the PSS EPRE. The UE may determine the PSS transmission power based on the PSS EPRE and the number of REs. In this way, the SSS transmission power may be a relative indication of the PSS transmission power.
  • dB decibels
  • 3 dB decibels
  • the UE 305 may use blind detection to obtain SSB information such as SSB transmission power associated with the serving cell.
  • the UE 305 also may use blind detection to obtain SSB transmission power associated with the non-serving cell.
  • performing blind detection associated with a non-serving cell in addition to performing blind detection associated with one or more serving cells may unnecessarily increase the complexity of operations of the UE 305. As a result, performing blind detection associated with a non-serving cell may have a negative impact on network performance or UE performance.
  • Various aspects relate generally to signaling to provide a UE with SSB transmission power information associated with a non-serving cell to support inter-cell multi-DCI based mTRP operation. Some aspects more specifically relate to a first TRP associated with a serving cell transmitting, to the UE, an indication of an SSB transmission power associated with a non-serving cell.
  • the UE may communicate with a plurality of non-serving cells, in which cases aspects may relate to the first TRP transmitting an indication of a plurality of SSB transmission powers associated with the plurality of non-serving cells.
  • the indication of the SSB transmission power may include an indication of a PSS transmission power or an indication of an SSS transmission power.
  • the indication of the SSB transmission power may include a relative indication with respect to an SSB transmission power of the serving cell.
  • the described techniques can be used to provide a UE with non-serving cell SSB information that the UE can use to facilitate inter-cell mTRP operation without increasing complexity of the UE.
  • the described techniques can be used to indicate the non-serving cell SSB transmission power information using relative information, thereby reducing signaling overhead. As a result, some aspects of the subject matter described in this disclosure may have a positive impact on network performance or device performance.
  • FIG 4 is a diagram illustrating an example associated with signaling SSB transmission power of a non-serving cell, in accordance with the present disclosure.
  • a UE 405 may communicate with a first TRP 410 and a second TRP 415.
  • the UE 405 may be similar to the UE 305 shown in Figure 3.
  • the TRP 410 or TRP 415 may be similar to the TRP 310 or the TRP 315.
  • the TRP 410 may be associated with a serving cell of the UE 405 and the TRP 415 may be associated with a non-serving cell of the UE 405.
  • the TRP 410 may determine an SSB transmission power associated with the non-serving cell.
  • the TRP 410 may determine the SSB transmission power associated with the non-serving cell, for example, based at least in part on receiving an indication of the SSB transmission power from the TRP 415.
  • the TRP 410 may determine the SSB transmission power based at least in part on receiving an indication thereof from another device or based at least in part on obtaining one or more measurements associated with signals transmitted by the TRP 415.
  • the TRP 410 may transmit, and the UE 405 may receive, an indication of the SSB transmission power associated with the non-serving cell to support communication between the UE and a second TRP associated with the non-serving cell.
  • the TRP 410 may transmit the indication of the SSB transmission power associated with the non-serving cell using any of a radio resource control (RRC) message, a medium access control control element (MAC-CE) , or a DCI transmission that includes the indication of the SSB transmission power associated with the non-serving cell.
  • RRC radio resource control
  • MAC-CE medium access control control element
  • the SSB transmission power may include an indication of a PSS transmission power.
  • the indication of the PSS transmission power may indicate an EPRE ratio corresponding to the non-serving cell.
  • the EPRE ratio may be a ratio of a PSS EPRE to an SSS EPRE.
  • the value of the EPRE ratio may be, for example, zero or three.
  • the TRP 410 may transmit, to the UE 405, an indication of an additional SSB transmission power associated with an additional non-serving cell.
  • the TRP 410 may indicate the additional SSB transmission power based on an additional EPRE ratio corresponding to the additional non-serving cell.
  • the TRP 410 may indicate multiple PSS transmission powers, each corresponding to one of a quantity of non-serving cells.
  • the indication of the PSS transmission power may include an indication of whether an EPRE ratio corresponding to the non-serving cell is equal to an EPRE ratio corresponding to at least one of the serving cell associated with the TRP 410 or an additional serving cell.
  • the TRP 410 may indicate the EPRE ratio of the non-serving cell simply by indicating whether the EPRE ratio of the non-serving cell is the same as, or different than, the ratio of the serving cell.
  • the TRP 410 may indicate multiple PSS transmission powers, each corresponding to one of a quantity of non-serving cells.
  • the indication of the PSS transmission power may include an indication of a serving cell ID or a PCI associated with the serving cell associated with the TRP 410 or the additional serving cell.
  • the indication of whether the EPRE ratio corresponding to the non-serving cell is equal to the EPRE ratio corresponding to at least one of the serving cell or an additional serving cell may include an indication of a comparison value corresponding to the non-serving cell.
  • the comparison value may be, or represent, a value of “same” or “different, ” or a similar value.
  • the indication of the PSS transmission power may include an indication of whether an EPRE ratio corresponding to at least one of the serving cell or an additional serving cell is common across at least one of a set of serving cells that includes the serving cell, or a set of non-serving cells that includes the non-serving cell.
  • the indication of whether the EPRE ratio corresponding to the at least one of the serving cell or the additional serving cell is common may correspond to at least one of a layer 1 mobility, a layer 2 mobility, or an inter-cell multiple TRP configuration.
  • the indication of whether the EPRE ratio corresponding to the at least one of the serving cell or the additional serving cell is common may include an indication of a comparison value.
  • the comparison value may be, or represent, a value of “common” or “different, ” or a similar value.
  • the indication of the SSB transmission power may include an indication of an SSS transmission power.
  • the indication of the SSS transmission power may include an indication of an ss-PBCH-BlockPower value corresponding to the non-serving cell.
  • the TRP 410 may transmit the indication of an additional SSB transmission power associated with an additional non-serving cell.
  • the indication of the additional SSB transmission power may indicate an additional ss-PBCH-BlockPower value corresponding to the additional non-serving cell.
  • the UE 405 and the TRP 415 may communicate based at least in part on the indication of the SSB transmission power.
  • the TRP 415 may transmit a DCI transmission to the UE 405.
  • the DCI transmission may schedule a data transmission via a PDSCH.
  • the UE 405 may use the indication of the SSB transmission power to facilitate decoding the DCI transmission.
  • the TRP 410 also may transmit a DCI transmission to the UE 405 to schedule an additional data transmission via an additional PDSCH. In this way, for example, the UE 405 may receive a first data transmission from the TRP 415 and a second data transmission from the TRP 410.
  • FIG. 5 is a flowchart illustrating an example process 500 performed, for example, by a UE in accordance with the present disclosure.
  • Example process 500 is an example where the UE (for example, UE 120) performs operations associated with signaling SSB transmission power of a non-serving cell.
  • process 500 may include receiving, from a first TRP associated with a serving cell, an indication of an SSB transmission power associated with a non-serving cell (block 510) .
  • the UE (such as by using reception component 702, depicted in Figure 7) may receive, from a first TRP associated with a serving cell, an indication of an SSB transmission power associated with a non-serving cell, as described above.
  • process 500 may include communicating with a second TRP associated with the non-serving cell based at least in part on the indication of the SSB transmission power (block 520) .
  • the UE (such as by using reception component 702 or transmission component 704, depicted in Figure 7) may communicate with a second TRP associated with the non-serving cell based at least in part on the indication of the SSB transmission power, as described above.
  • Process 500 may include additional aspects, such as any single aspect or any combination of aspects described below or in connection with one or more other processes described elsewhere herein.
  • communicating with the second TRP comprises receiving a first DCI transmission from the first TRP.
  • process 500 includes receiving a second DCI transmission from the first TRP
  • receiving the indication of the SSB transmission power associated with the non-serving cell comprises receiving a radio resource control message that includes the indication of the SSB transmission power associated with the non-serving cell.
  • the indication of the SSB transmission power comprises an indication of a PSS transmission power.
  • the indication of the PSS transmission power indicates an EPRE ratio corresponding to the non-serving cell, wherein the EPRE ratio comprises a ratio of a PSS EPRE to an SSS EPRE.
  • process 500 includes receiving an indication of an additional SSB transmission power associated with an additional non-serving cell, wherein the indication of the additional SSB transmission power indicates an additional EPRE ratio corresponding to the additional non-serving cell.
  • the indication of the PSS transmission power comprises an indication of an EPRE ratio value.
  • the EPRE ratio value is zero or three.
  • the indication of the PSS transmission power comprises an indication of whether an EPRE ratio corresponding to the non-serving cell is equal to an EPRE ratio corresponding to at least one of the serving cell or an additional serving cell.
  • the indication of the PSS transmission power comprises at least one of an indication a serving cell ID associated with the serving cell or the additional serving cell, or an indication of a physical cell ID associated with the serving cell or the additional serving cell.
  • the indication of whether the EPRE ratio corresponding to the non-serving cell is equal to the EPRE ratio corresponding to at least one of the serving cell or an additional serving cell comprises an indication of a comparison value corresponding to the non-serving cell.
  • the indication of the PSS transmission power comprises an indication of whether an EPRE ratio corresponding to at least one of the serving cell or an additional serving cell is common across at least one of a set of serving cells that includes the serving cell, or a set of non-serving cells that includes the non-serving cell.
  • the indication of whether the EPRE ratio corresponding to the at least one of the serving cell or the additional serving cell is common corresponds to at least one of a layer 1 mobility, a layer 2 mobility, or an inter-cell multiple TRP configuration.
  • the indication of whether the EPRE ratio corresponding to the at least one of the serving cell or the additional serving cell is common comprises an indication of a comparison value.
  • the indication of the SSB transmission power comprises an indication of an SSS transmission power.
  • the indication of the SSS transmission power comprises an indication of an ss-PBCH-BlockPower value corresponding to the non-serving cell.
  • process 500 includes receiving an indication of an additional SSB transmission power associated with an additional non-serving cell, wherein the indication of the additional SSB transmission power indicates an additional ss-PBCH-BlockPower value corresponding to the additional non-serving cell.
  • process 500 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Figure 5. Additionally or alternatively, two or more of the blocks of process 500 may be performed in parallel.
  • FIG. 6 is a flowchart illustrating an example process 600 performed, for example, by a first TRP in accordance with the present disclosure.
  • Example process 600 is an example where the first TRP (for example, first TRP 410) performs operations associated with signaling SSB transmission power of a non-serving cell.
  • first TRP for example, first TRP 410
  • process 600 may include determining an SSB transmission power associated with a non-serving cell (block 610) .
  • the first TRP (such as by using determination component 808, depicted in Figure 8) may determine an SSB transmission power associated with a non-serving cell, as described above.
  • process 600 may include transmitting, to a UE, an indication of the SSB transmission power associated with the non-serving cell to support communication between the UE and a second TRP associated with the non-serving cell (block 620) .
  • the first TRP (such as by using transmission component 804, depicted in Figure 8) may transmit, to a UE, an indication of the SSB transmission power associated with the non-serving cell to support communication between the UE and a second TRP associated with the non-serving cell, as described above.
  • Process 600 may include additional aspects, such as any single aspect or any combination of aspects described below or in connection with one or more other processes described elsewhere herein.
  • process 600 includes transmitting a first DCI transmission to the UE.
  • the communication between the UE and the second TRP comprises a second DCI transmission
  • transmitting the indication of the SSB transmission power associated with the non-serving cell comprises transmitting a radio resource control message that includes the indication of the SSB transmission power associated with the non-serving cell.
  • the indication of the SSB transmission power comprises an indication of a PSS transmission power.
  • the indication of the PSS transmission power indicates an EPRE ratio corresponding to the non-serving cell, wherein the EPRE ratio comprises a ratio of a PSS EPRE to an SSS EPRE.
  • process 600 includes transmitting an indication of an additional SSB transmission power associated with an additional non-serving cell, wherein the indication of the additional SSB transmission power indicates an additional EPRE ratio corresponding to the additional non-serving cell.
  • the indication of the PSS transmission power comprises an indication of an EPRE ratio value.
  • the EPRE ratio value is zero or three.
  • the indication of the PSS transmission power comprises an indication of whether an EPRE ratio corresponding to the non-serving cell is equal to an EPRE ratio corresponding to at least one of the serving cell or an additional serving cell.
  • the indication of the PSS transmission power comprises at least one of an indication a serving cell ID associated with the serving cell or the additional serving cell, or an indication of a physical cell ID associated with the serving cell or the additional serving cell.
  • the indication of whether the EPRE ratio corresponding to the non-serving cell is equal to the EPRE ratio corresponding to at least one of the serving cell or an additional serving cell comprises an indication of a comparison value corresponding to the non-serving cell.
  • the indication of the PSS transmission power comprises an indication of whether an EPRE ratio corresponding to at least one of the serving cell or an additional serving cell is common across at least one of a set of serving cells that includes the serving cell, or a set of non-serving cells that includes the non-serving cell.
  • the indication of whether the EPRE ratio corresponding to the at least one of the serving cell or the additional serving cell is common corresponds to at least one of a layer 1 mobility, a layer 2 mobility, or an inter-cell multiple TRP configuration.
  • the indication of whether the EPRE ratio corresponding to the at least one of the serving cell or the additional serving cell is common comprises an indication of a comparison value.
  • the indication of the SSB transmission power comprises an indication of an SSS transmission power.
  • the indication of the SSS transmission power comprises an indication of an ss-PBCH-BlockPower value corresponding to the non-serving cell.
  • process 600 includes transmitting an indication of an additional SSB transmission power associated with an additional non-serving cell, wherein the indication of the additional SSB transmission power indicates an additional ss-PBCH-BlockPower value corresponding to the additional non-serving cell.
  • process 600 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Figure 6. Additionally or alternatively, two or more of the blocks of process 600 may be performed in parallel.
  • FIG. 7 is a block diagram of an example apparatus 700 for wireless communication in accordance with the present disclosure.
  • the apparatus 700 may be a UE, or a UE may include the apparatus 700.
  • the apparatus 700 includes a reception component 702 and a transmission component 704, which may be in communication with one another (for example, via one or more buses) .
  • the apparatus 700 may communicate with another apparatus 706 (such as a UE, a base station, or another wireless communication device) using the reception component 702 and the transmission component 704.
  • another apparatus 706 such as a UE, a base station, or another wireless communication device
  • the apparatus 700 may be configured to perform one or more operations described herein in connection with Figure 4. Additionally or alternatively, the apparatus 700 may be configured to perform one or more processes described herein, such as process 500 of Figure 5.
  • the apparatus 700 may include one or more components of the UE described above in connection with Figure 2. Additionally or alternatively, one or more components of the apparatus 700 may be implemented at least in part as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or a processor to perform the functions or operations of the component.
  • the reception component 702 may receive communications, such as reference signals, control information, data communications, or a combination thereof, from the apparatus 706.
  • the reception component 702 may provide received communications to one or more other components of the apparatus 700.
  • the reception component 702 may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, de-mapping, equalization, interference cancellation, or decoding, among other examples) , and may provide the processed signals to the one or more other components.
  • the reception component 702 may include one or more antennas, a demodulator, a MIMO detector, a receive processor, a controller/processor, a memory, or a combination thereof, of the UE described above in connection with Figure 2.
  • the transmission component 704 may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the apparatus 706.
  • one or more other components of the apparatus 700 may generate communications and may provide the generated communications to the transmission component 704 for transmission to the apparatus 706.
  • the transmission component 704 may perform signal processing on the generated communications (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, among other examples) , and may transmit the processed signals to the apparatus 706.
  • the transmission component 704 may include one or more antennas, a modulator, a transmit MIMO processor, a transmit processor, a controller/processor, a memory, or a combination thereof, of the UE described above in connection with Figure 2. In some aspects, the transmission component 704 may be co-located with the reception component 702 in a transceiver.
  • the reception component 702 may receive, from a first TRP associated with a serving cell, an indication of an SSB transmission power associated with a non-serving cell.
  • the reception component 702 or the transmission component 704 may communicate with a second TRP associated with the non-serving cell based at least in part on the indication of the SSB transmission power.
  • the reception component 702 may receive a second DCI transmission from the first TRP.
  • the reception component 702 may receive an indication of an additional SSB transmission power associated with an additional non-serving cell, wherein the indication of the additional SSB transmission power indicates an additional EPRE ratio corresponding to the additional non-serving cell.
  • the reception component 702 may receive an indication of an additional SSB transmission power associated with an additional non-serving cell, wherein the indication of the additional SSB transmission power indicates an additional ss-PBCH-BlockPower value corresponding to the additional non-serving cell.
  • FIG. 7 The quantity and arrangement of components shown in Figure 7 are provided as an example. In practice, there may be additional components, fewer components, different components, or differently arranged components than those shown in Figure 7. Furthermore, two or more components shown in Figure 7 may be implemented within a single component, or a single component shown in Figure 7 may be implemented as multiple, distributed components. Additionally or alternatively, a set of (one or more) components shown in Figure 7 may perform one or more functions described as being performed by another set of components shown in Figure 7.
  • FIG 8 is a block diagram of an example apparatus 800 for wireless communication.
  • the apparatus 800 may be a TRP, or a TRP may include the apparatus 800.
  • the apparatus 800 includes a reception component 802, a communication manager 804, and a transmission component 806, which may be in communication with one another (for example, via one or more buses) .
  • the apparatus 800 may communicate with another apparatus 808 (such as a UE, a base station, or another wireless communication device) using the reception component 802 and the transmission component 806.
  • another apparatus 808 such as a UE, a base station, or another wireless communication device
  • the apparatus 800 may be configured to perform one or more operations described herein in connection with Figure 4. Additionally or alternatively, the apparatus 800 may be configured to perform one or more processes described herein, such as process 600 of Figure 6. In some aspects, the apparatus 800 or one or more components shown in Figure 8 may include one or more components of the UE or base station described above in connection with Figure 2.
  • the reception component 802 may receive communications, such as reference signals, control information, data communications, or a combination thereof, from the apparatus 808.
  • the reception component 802 may provide received communications to one or more other components of the apparatus 800, such as the communication manager 804.
  • the reception component 802 may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to- digital conversion, demultiplexing, deinterleaving, de-mapping, equalization, interference cancellation, or decoding, among other examples) , and may provide the processed signals to the one or more other components.
  • the reception component 802 may include one or more antennas, a demodulator, a MIMO detector, a receive processor, a controller/processor, a memory, or a combination thereof, of the UE or base station described above in connection with Figure 2.
  • the transmission component 806 may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the apparatus 808.
  • the communication manager 804 may generate communications and may transmit the generated communications to the transmission component 806 for transmission to the apparatus 808.
  • the transmission component 806 may perform signal processing on the generated communications (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, among other examples) , and may transmit the processed signals to the apparatus 806.
  • the transmission component 804 may include one or more antennas, a modulator, a transmit MIMO processor, a transmit processor, a controller/processor, a memory, or a combination thereof, of the UE or base station described above in connection with Figure 2.
  • the transmission component 806 may be co-located with the reception component 802 in a transceiver.
  • the communication manager 804 may receive or may cause the reception component 802 to receive, from a first TRP associated with a serving cell, an indication of an SSB transmission power associated with a non-serving cell.
  • the communication manager 804 may communicate with a second TRP associated with the non-serving cell based at least in part on the indication of the SSB transmission power.
  • the communication manager 804 may perform one or more operations described elsewhere herein as being performed by one or more components of the communication manager 804.
  • the communication manager 804 may include a controller/processor, a memory, a scheduler, a communication unit, or a combination thereof, of the UE or base station described above in connection with Figure 2.
  • the communication manager 804 includes a set of components, such as a determination component 810.
  • the set of components may be separate and distinct from the communication manager 804.
  • one or more components of the set of components may include or may be implemented within a controller/processor, a memory, a scheduler, a communication unit, or a combination thereof, of the TRP described above in connection with Figure 2.
  • one or more components of the set of components may be implemented at least in part as software stored in a memory.
  • a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or a processor to perform the functions or operations of the component.
  • the determination component 808 may determine an SSB transmission power associated with a non-serving cell.
  • the transmission component 806 may transmit, to a UE, an indication of the SSB transmission power associated with the non-serving cell to support communication between the UE and a second TRP associated with the non-serving cell.
  • the transmission component 806 may transmit a first DCI transmission to the UE.
  • the transmission component 806 may transmit an indication of an additional SSB transmission power associated with an additional non-serving cell, wherein the indication of the additional SSB transmission power indicates an additional EPRE ratio corresponding to the additional non-serving cell.
  • the transmission component 806 may transmit an indication of an additional SSB transmission power associated with an additional non-serving cell, wherein the indication of the additional SSB transmission power indicates an additional ss-PBCH-BlockPower value corresponding to the additional non-serving cell.
  • FIG. 8 The quantity and arrangement of components shown in Figure 8 are provided as an example. In practice, there may be additional components, fewer components, different components, or differently arranged components than those shown in Figure 8. Furthermore, two or more components shown in Figure 8 may be implemented within a single component, or a single component shown in Figure 8 may be implemented as multiple, distributed components. Additionally or alternatively, a set of (one or more) components shown in Figure 8 may perform one or more functions described as being performed by another set of components shown in Figure 8.
  • a method of wireless communication performed by a user equipment (UE) comprising: receiving, from a first transmit-receive point (TRP) associated with a serving cell, an indication of a synchronization signal block (SSB) transmission power associated with a non-serving cell; and communicating with a second TRP associated with the non-serving cell based at least in part on the indication of the SSB transmission power.
  • TRP transmit-receive point
  • SSB synchronization signal block
  • Aspect 2 The method of Aspect 1, wherein communicating with the second TRP comprises receiving a first downlink control information (DCI) transmission from the first TRP.
  • DCI downlink control information
  • Aspect 3 The method of Aspect 2, further comprising receiving a second DCI transmission from the first TRP.
  • Aspect 4 The method of any of Aspects 1-3, wherein receiving the indication of the SSB transmission power associated with the non-serving cell comprises receiving a radio resource control message that includes the indication of the SSB transmission power associated with the non-serving cell.
  • Aspect 5 The method of any of Aspects 1-4, wherein the indication of the SSB transmission power comprises an indication of a primary synchronization signal (PSS) transmission power.
  • PSS primary synchronization signal
  • Aspect 6 The method of Aspect 5, wherein the indication of the PSS transmission power indicates an energy per resource element (EPRE) ratio corresponding to the non-serving cell, wherein the EPRE ratio comprises a ratio of a PSS EPRE to a secondary synchronization signal (SSS) EPRE.
  • EPRE energy per resource element
  • Aspect 7 The method of Aspect 6, further comprising receiving an indication of an additional SSB transmission power associated with an additional non-serving cell, wherein the indication of the additional SSB transmission power indicates an additional EPRE ratio corresponding to the additional non-serving cell.
  • Aspect 8 The method of either of Aspects 6 or 7, wherein the indication of the PSS transmission power comprises an indication of an EPRE ratio value.
  • Aspect 9 The method of Aspect 8, wherein the EPRE ratio value is zero or three.
  • Aspect 10 The method of Aspect 5, wherein the indication of the PSS transmission power comprises an indication of whether an energy per resource element (EPRE) ratio corresponding to the non-serving cell is equal to an EPRE ratio corresponding to at least one of the serving cell or an additional serving cell.
  • EPRE energy per resource element
  • Aspect 11 The method of Aspect 10, wherein the indication of the PSS transmission power comprises at least one of: an indication a serving cell identifier (ID) associated with the serving cell or the additional serving cell, or an indication of a physical cell ID associated with the serving cell or the additional serving cell.
  • ID serving cell identifier
  • Aspect 12 The method of either of Aspects 10 or 11, wherein the indication of whether the EPRE ratio corresponding to the non-serving cell is equal to the EPRE ratio corresponding to at least one of the serving cell or an additional serving cell comprises an indication of a comparison value corresponding to the non-serving cell.
  • Aspect 13 The method of Aspect 5, wherein the indication of the PSS transmission power comprises an indication of whether an energy per resource element (EPRE) ratio corresponding to at least one of the serving cell or an additional serving cell is common across at least one of: a set of serving cells that includes the serving cell, or a set of non-serving cells that includes the non-serving cell.
  • EPRE energy per resource element
  • Aspect 14 The method of Aspect 13, wherein the indication of whether the EPRE ratio corresponding to the at least one of the serving cell or the additional serving cell is common corresponds to at least one of a layer 1 mobility, a layer 2 mobility, or an inter-cell multiple TRP configuration.
  • Aspect 15 The method of either of Aspects 13 or 14, wherein the indication of whether the EPRE ratio corresponding to the at least one of the serving cell or the additional serving cell is common comprises an indication of a comparison value.
  • Aspect 16 The method of any of Aspects 1-15, wherein the indication of the SSB transmission power comprises an indication of a secondary synchronization signal (SSS) transmission power.
  • SSS secondary synchronization signal
  • Aspect 17 The method of Aspect 16, wherein the indication of the SSS transmission power comprises an indication of a synchronization signal physical broadcast channel block power (ss-PBCH-BlockPower) value corresponding to the non-serving cell.
  • ss-PBCH-BlockPower synchronization signal physical broadcast channel block power
  • Aspect 18 The method of Aspect 17, further comprising receiving an indication of an additional SSB transmission power associated with an additional non-serving cell, wherein the indication of the additional SSB transmission power indicates an additional ss-PBCH-BlockPower value corresponding to the additional non-serving cell.
  • a method of wireless communication performed by a first transmit-receive point (TRP) associated with a serving cell comprising: determining a synchronization signal block (SSB) transmission power associated with a non-serving cell; and transmitting, to a user equipment (UE) , an indication of the SSB transmission power associated with the non-serving cell to support communication between the UE and a second TRP associated with the non-serving cell.
  • TRP transmit-receive point
  • UE user equipment
  • Aspect 20 The method of Aspect 19, further comprising transmitting a first downlink control information (DCI) transmission to the UE.
  • DCI downlink control information
  • Aspect 21 The method of Aspect 20, wherein the communication between the UE and the second TRP comprises a second DCI transmission
  • Aspect 22 The method of any of Aspects 19-21, wherein transmitting the indication of the SSB transmission power associated with the non-serving cell comprises transmitting a radio resource control message that includes the indication of the SSB transmission power associated with the non-serving cell.
  • Aspect 23 The method of any of Aspects 19-22, wherein the indication of the SSB transmission power comprises an indication of a primary synchronization signal (PSS) transmission power.
  • PSS primary synchronization signal
  • Aspect 24 The method of Aspect 23, wherein the indication of the PSS transmission power indicates an energy per resource element (EPRE) ratio corresponding to the non-serving cell, wherein the EPRE ratio comprises a ratio of a PSS EPRE to a secondary synchronization signal (SSS) EPRE.
  • EPRE energy per resource element
  • Aspect 25 The method of Aspect 24, further comprising transmitting an indication of an additional SSB transmission power associated with an additional non-serving cell, wherein the indication of the additional SSB transmission power indicates an additional EPRE ratio corresponding to the additional non-serving cell.
  • Aspect 26 The method of either of Aspects 24 or 25, wherein the indication of the PSS transmission power comprises an indication of an EPRE ratio value.
  • Aspect 27 The method of Aspect 26, wherein the EPRE ratio value is zero or three.
  • Aspect 28 The method of Aspect 23, wherein the indication of the PSS transmission power comprises an indication of whether an energy per resource element (EPRE) ratio corresponding to the non-serving cell is equal to an EPRE ratio corresponding to at least one of the serving cell or an additional serving cell.
  • EPRE energy per resource element
  • Aspect 29 The method of Aspect 28, wherein the indication of the PSS transmission power comprises at least one of: an indication a serving cell identifier (ID) associated with the serving cell or the additional serving cell, or an indication of a physical cell ID associated with the serving cell or the additional serving cell.
  • ID serving cell identifier
  • Aspect 30 The method of either of Aspects 28 or 29, wherein the indication of whether the EPRE ratio corresponding to the non-serving cell is equal to the EPRE ratio corresponding to at least one of the serving cell or an additional serving cell comprises an indication of a comparison value corresponding to the non-serving cell.
  • Aspect 31 The method of Aspect 23, wherein the indication of the PSS transmission power comprises an indication of whether an energy per resource element (EPRE) ratio corresponding to at least one of the serving cell or an additional serving cell is common across at least one of: a set of serving cells that includes the serving cell, or a set of non-serving cells that includes the non-serving cell.
  • EPRE energy per resource element
  • Aspect 32 The method of Aspect 31, wherein the indication of whether the EPRE ratio corresponding to the at least one of the serving cell or the additional serving cell is common corresponds to at least one of a layer 1 mobility, a layer 2 mobility, or an inter-cell multiple TRP configuration.
  • Aspect 33 The method of either of Aspects 31 or 32, wherein the indication of whether the EPRE ratio corresponding to the at least one of the serving cell or the additional serving cell is common comprises an indication of a comparison value.
  • Aspect 34 The method of any of Aspects 19-33, wherein the indication of the SSB transmission power comprises an indication of a secondary synchronization signal (SSS) transmission power.
  • SSS secondary synchronization signal
  • Aspect 35 The method of Aspect 34, wherein the indication of the SSS transmission power comprises an indication of a synchronization signal physical broadcast channel block power (ss-PBCH-BlockPower) value corresponding to the non-serving cell.
  • ss-PBCH-BlockPower synchronization signal physical broadcast channel block power
  • Aspect 36 The method of Aspect 35, further comprising transmitting an indication of an additional SSB transmission power associated with an additional non-serving cell, wherein the indication of the additional SSB transmission power indicates an additional ss-PBCH-BlockPower value corresponding to the additional non-serving cell.
  • Aspect 37 An apparatus for wireless communication at a device, comprising a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method of one or more Aspects of Aspects 1-18.
  • Aspect 38 A device for wireless communication, comprising a memory and one or more processors coupled to the memory, the memory and the one or more processors configured to perform the method of one or more Aspects of Aspects 1-18.
  • Aspect 39 An apparatus for wireless communication, comprising at least one means for performing the method of one or more Aspects of Aspects 1-18.
  • Aspect 40 A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method of one or more Aspects of Aspects 1-18.
  • Aspect 41 A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method of one or more Aspects of Aspects 1-18.
  • Aspect 42 An apparatus for wireless communication at a device, comprising a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method of one or more Aspects of Aspects 19-36.
  • Aspect 43 A device for wireless communication, comprising a memory and one or more processors coupled to the memory, the memory and the one or more processors configured to perform the method of one or more Aspects of Aspects 19-36.
  • Aspect 44 An apparatus for wireless communication, comprising at least one means for performing the method of one or more Aspects of Aspects 19-36.
  • Aspect 45 A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method of one or more Aspects of Aspects 19-36.
  • Aspect 46 A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method of one or more Aspects of Aspects 19-36.
  • the term “component” is intended to be broadly construed as hardware, firmware, or a combination of hardware and software.
  • a processor is implemented in hardware, firmware, or a combination of hardware and software. It will be apparent that systems or methods described herein may be implemented in different forms of hardware, firmware, or a combination of hardware and software. The actual specialized control hardware or software code used to implement these systems or methods is not limiting of the aspects. Thus, the operation and behavior of the systems or methods were described herein without reference to specific software code-it being understood that software and hardware can be designed to implement the systems or methods based, at least in part, on the description herein.
  • satisfying a threshold may, depending on the context, refer to a value being greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, or not equal to the threshold, among other examples.
  • “at least one of: a, b, or c” is intended to cover a, b, c, a-b, a-c, b-c, and a-b-c, as well as any combination with multiples of the same element (for example, a-a, a-a-a, a-a-b, a-a-c, a-b-b, a-c-c, b-b, b-b-b, b-b-c, c-c, and c-c-c or any other ordering of a, b, and c) .
  • the terms “has, ” “have, ” “having, ” and similar terms are intended to be open-ended terms. Further, the phrase “based on” is intended to mean “based, at least in part, on” unless explicitly stated otherwise. Also, as used herein, the term “or” is intended to be inclusive when used in a series and may be used interchangeably with “and/or, ” unless explicitly stated otherwise (for example, if used in combination with “either” or “only one of” ) .

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Divers aspects de la présente divulgation portent d'une manière générale sur la communication sans fil. Selon certains aspects, un équipement utilisateur (UE) peut recevoir, à partir d'un premier point de transmission-réception (TRP) associé à une cellule de desserte, une indication d'une puissance de transmission de bloc de signaux de synchronisation (SSB) associée à une cellule non de desserte. L'UE peut communiquer avec un second TRP associé à la cellule non de desserte sur la base, au moins en partie, de l'indication de la puissance de transmission de SSB. La divulgation concerne également de nombreux autres aspects.
PCT/CN2021/075480 2021-02-05 2021-02-05 Signalisation de la puissance de transmission d'un bloc de signaux de synchronisation d'une cellule non de desserte Ceased WO2022165744A1 (fr)

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WO2025035988A1 (fr) * 2023-08-11 2025-02-20 中兴通讯股份有限公司 Procédé de transmission de bloc de signal de synchronisation, nœud de communication et support de stockage

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WO2020028417A1 (fr) * 2018-07-31 2020-02-06 Qualcomm Incorporated Mesure et rapport distincts pour des points de réception de transmission différents
WO2020092468A1 (fr) * 2018-11-02 2020-05-07 Intel Corporation Mesure de csi et définition de qualité de rapport pour 5g nr-trp
US20200314708A1 (en) * 2019-03-29 2020-10-01 Huawei Technologies Co., Ltd. User equipment-centric inter-cell mobility
US20200359329A1 (en) * 2019-05-08 2020-11-12 Qualcomm Incorporated Transmit power control for positioning using non-serving cells

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WO2020028417A1 (fr) * 2018-07-31 2020-02-06 Qualcomm Incorporated Mesure et rapport distincts pour des points de réception de transmission différents
WO2020092468A1 (fr) * 2018-11-02 2020-05-07 Intel Corporation Mesure de csi et définition de qualité de rapport pour 5g nr-trp
US20200314708A1 (en) * 2019-03-29 2020-10-01 Huawei Technologies Co., Ltd. User equipment-centric inter-cell mobility
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Publication number Priority date Publication date Assignee Title
WO2025035988A1 (fr) * 2023-08-11 2025-02-20 中兴通讯股份有限公司 Procédé de transmission de bloc de signal de synchronisation, nœud de communication et support de stockage

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