[go: up one dir, main page]

WO2024197813A1 - Commutation de réseau reposant sur une détection de chute de puissance reçue de signal de référence - Google Patents

Commutation de réseau reposant sur une détection de chute de puissance reçue de signal de référence Download PDF

Info

Publication number
WO2024197813A1
WO2024197813A1 PCT/CN2023/085473 CN2023085473W WO2024197813A1 WO 2024197813 A1 WO2024197813 A1 WO 2024197813A1 CN 2023085473 W CN2023085473 W CN 2023085473W WO 2024197813 A1 WO2024197813 A1 WO 2024197813A1
Authority
WO
WIPO (PCT)
Prior art keywords
network
rsrp
cell
processors
switch
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/CN2023/085473
Other languages
English (en)
Inventor
Nanrun WU
Arvind Vardarajan Santhanam
Shanshan Wang
Xuqiang ZHANG
Jing Dai
Bangyun ZHAO
Yuebin SHU
Jinghua Fang
Xianwei ZHU
Xiaochen Chen
Tom Chin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qualcomm Inc
Original Assignee
Qualcomm Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Priority to PCT/CN2023/085473 priority Critical patent/WO2024197813A1/fr
Publication of WO2024197813A1 publication Critical patent/WO2024197813A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H04W36/142—Reselecting a network or an air interface over the same radio air interface technology

Definitions

  • aspects of the present disclosure generally relate to wireless communication and to techniques and apparatuses for switching networks based on a drop in a reference signal received power measurement.
  • 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 (e.g., bandwidth, transmit power, or the like) .
  • 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
  • a wireless network may include one or more network nodes that support communication for wireless communication devices, such as a user equipment (UE) or multiple UEs.
  • a UE may communicate with a network node via downlink communications and uplink communications.
  • Downlink (or “DL” ) refers to a communication link from the network node to the UE
  • uplink (or “UL” ) refers to a communication link from the UE to the network node.
  • Some wireless networks may support device-to-device communication, such as via a local link (e.g., a sidelink (SL) , a wireless local area network (WLAN) link, and/or a wireless personal area network (WPAN) link, among other examples) .
  • SL sidelink
  • WLAN wireless local area network
  • WPAN wireless personal area network
  • New Radio which may 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, using CP-OFDM and/or single-carrier frequency division multiplexing (SC-FDM) (also known as discrete Fourier transform spread OFDM (DFT-s-OFDM) ) on the uplink, as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation.
  • OFDM orthogonal frequency division multiplexing
  • SC-FDM single-carrier frequency division multiplexing
  • DFT-s-OFDM discrete Fourier transform spread OFDM
  • MIMO multiple-input multiple-output
  • the UE may include a memory and one or more processors coupled to the memory.
  • the one or more processors may be configured to switch to a first network from a second network.
  • the one or more processors may be configured to measure a reference signal received power (RSRP) of a first cell associated with the first network.
  • the one or more processors may be configured to switch from the first network to the second network as a result of a drop in the RSRP.
  • RSRP reference signal received power
  • the network node may include a memory and one or more processors coupled to the memory.
  • the one or more processors may be configured to configure a UE to switch to a first network from a second network.
  • the one or more processors may be configured to configure the UE to measure an RSRP of a first cell associated with the first network.
  • the one or more processors may be configured to configure the UE to switch from the first network to the second network as a result of a drop in the RSRP.
  • the method may include switching to a first network from a second network.
  • the method may include measuring an RSRP of a first cell associated with the first network.
  • the method may include switching from the first network to the second network as a result of a drop in the RSRP.
  • the method may include configuring a UE to switch to a first network from a second network.
  • the method may include configuring the UE to measure an RSRP of a first cell associated with the first network.
  • the method may include configuring the UE to switch from the first network to the second network as a result of a drop in the RSRP.
  • Some aspects described herein relate to a non-transitory computer-readable medium that stores a set of instructions for wireless communication by a UE.
  • the set of instructions when executed by one or more processors of the UE, may cause the UE to switch to a first network from a second network.
  • the set of instructions when executed by one or more processors of the UE, may cause the UE to measure an RSRP of a first cell associated with the first network.
  • the set of instructions, when executed by one or more processors of the UE may cause the UE to switch from the first network to the second network as a result of a drop in the RSRP.
  • Some aspects described herein relate to a non-transitory computer-readable medium that stores a set of instructions for wireless communication by a network node.
  • the set of instructions when executed by one or more processors of the network node, may cause the network node to configure a UE to switch to a first network from a second network.
  • the set of instructions when executed by one or more processors of the network node, may cause the network node to configure the UE to measure an RSRP of a first cell associated with the first network.
  • the set of instructions when executed by one or more processors of the network node, may cause the network node to configure the UE to switch from the first network to the second network as a result of a drop in the RSRP.
  • the apparatus may include means for switching to a first network from a second network.
  • the apparatus may include means for measuring an RSRP of a first cell associated with the first network.
  • the apparatus may include means for switching from the first network to the second network as a result of a drop in the RSRP.
  • the apparatus may include means for configuring a UE to switch to a first network from a second network.
  • the apparatus may include means for configuring the UE to measure an RSRP of a first cell associated with the first network.
  • the apparatus may include means for configuring the UE to switch from the first network to the second network as a result of a drop in the RSRP.
  • aspects generally include a method, apparatus, system, computer program product, non-transitory computer-readable medium, user equipment, base station, network entity, network node, wireless communication device, and/or processing system as substantially described herein with reference to and as illustrated by the drawings and specification.
  • aspects are described in the present disclosure by illustration to some examples, those skilled in the art will understand that such aspects may be implemented in many different arrangements and scenarios.
  • Techniques described herein may be implemented using different platform types, devices, systems, shapes, sizes, and/or packaging arrangements.
  • some aspects may be implemented via integrated chip embodiments or other non-module-component based devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail/purchasing devices, medical devices, and/or artificial intelligence devices) .
  • Aspects may be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components, and/or system-level components.
  • Devices incorporating described aspects and features may include additional components and features for implementation and practice of claimed and described aspects.
  • transmission and reception of wireless signals may include one or more components for analog and digital purposes (e.g., hardware components including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders, and/or summers) .
  • RF radio frequency
  • aspects described herein may be practiced in a wide variety of devices, components, systems, distributed arrangements, and/or end-user devices of varying size, shape, and constitution.
  • Fig. 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 of a network node in communication with a user equipment (UE) in a wireless network, in accordance with the present disclosure.
  • UE user equipment
  • Fig. 3 is a diagram illustrating an example disaggregated base station architecture, in accordance with the present disclosure.
  • Fig. 4 is a diagram illustrating an example of physical channels and reference signals in a wireless network, in accordance with the present disclosure.
  • Fig. 5 is a diagram illustrating an example associated with detecting a drop in a reference signal received power (RSRP) measurement, in accordance with the present disclosure.
  • RSRP reference signal received power
  • Fig. 6 is a diagram illustrating an example associated with RSRP measurements after switching to a first network from a second network, in accordance with the present disclosure.
  • Fig. 7 is a diagram illustrating an example process performed, for example, by a UE, in accordance with the present disclosure.
  • Fig. 8 is a diagram illustrating an example process performed, for example, by a network node, in accordance with the present disclosure.
  • Fig. 9 is a diagram of an example apparatus for wireless communication, in accordance with the present disclosure.
  • Fig. 10 is a diagram of an example apparatus for wireless communication, in accordance with the present disclosure.
  • a user equipment may switch between network types depending on various circumstances. For example, at ground level, a UE may have a strong signal on a 5G network. In a basement or parking garage, the UE may have a strong signal on a Long Term Evolution (LTE) network. When the UE moves to a new location (such as from ground level to a basement or parking garage) , the UE may experience reduced network performance by remaining on the 5G network. Likewise, when moving back to the ground level from the basement or parking garage, the UE may benefit from quickly returning to the 5G network.
  • LTE Long Term Evolution
  • Some techniques and apparatuses described herein enable the UE to quickly return to a previous (e.g., 5G) network after temporarily switching to another (e.g., LTE) network.
  • the UE may be able to detect when the UE has moved from the LTE network to the 5G network based on, for example, a steep drop in reference signal received power (RSRP) associated with the LTE network. Upon detection of such a drop in RSRP, the UE may switch back to the 5G network. As a result, the UE may experience better network performance by quickly returning to the 5G network.
  • RSRP reference signal received power
  • NR New Radio
  • RAT radio access technology
  • a network node 110 is a network node that communicates with UEs 120. As shown, a network node 110 may include one or more network nodes. For example, a network node 110 may be an aggregated network node, meaning that the aggregated network node is configured to utilize a radio protocol stack that is physically or logically integrated within a single radio access network (RAN) node (e.g., within a single device or unit) .
  • RAN radio access network
  • a network node 110 may be a disaggregated network node (sometimes referred to as a disaggregated base station) , meaning that the network node 110 is configured to utilize a protocol stack that is physically or logically distributed among two or more nodes (such as one or more central units (CUs) , one or more distributed units (DUs) , or one or more radio units (RUs) ) .
  • CUs central units
  • DUs distributed units
  • RUs radio units
  • a network node 110 is or includes a network node that communicates with UEs 120 via a radio access link, such as an RU. In some examples, a network node 110 is or includes a network node that communicates with other network nodes 110 via a fronthaul link or a midhaul link, such as a DU. In some examples, a network node 110 is or includes a network node that communicates with other network nodes 110 via a midhaul link or a core network via a backhaul link, such as a CU.
  • a network node 110 may include multiple network nodes, such as one or more RUs, one or more CUs, and/or one or more DUs.
  • a network node 110 may include, for example, an NR base station, an LTE base station, a Node B, an eNB (e.g., in 4G) , a gNB (e.g., in 5G) , an access point, a transmission reception point (TRP) , a DU, an RU, a CU, a mobility element of a network, a core network node, a network element, a network equipment, a RAN node, or a combination thereof.
  • the network nodes 110 may be interconnected to one another or to one or more other network nodes 110 in the wireless network 100 through various types of fronthaul, midhaul, and/or backhaul interfaces, such as a direct physical connection, an air interface, or a virtual network, using any suitable transport network.
  • a network node 110 may provide communication coverage for a particular geographic area.
  • the term “cell” can refer to a coverage area of a network node 110 and/or a network node subsystem serving this coverage area, depending on the context in which the term is used.
  • a network node 110 may provide communication coverage for a macro cell, a pico cell, a femto cell, and/or another type of cell.
  • a macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs 120 with service subscriptions.
  • a pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs 120 with service subscriptions.
  • a femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by UEs 120 having association with the femto cell (e.g., UEs 120 in a closed subscriber group (CSG) ) .
  • a network node 110 for a macro cell may be referred to as a macro network node.
  • a network node 110 for a pico cell may be referred to as a pico network node.
  • a network node 110 for a femto cell may be referred to as a femto network node or an in-home network node. In the example shown in Fig.
  • the network node 110a may be a macro network node for a macro cell 102a
  • the network node 110b may be a pico network node for a pico cell 102b
  • the network node 110c may be a femto network node for a femto cell 102c.
  • a network node may support one or multiple (e.g., three) cells.
  • a cell may not necessarily be stationary, and the geographic area of the cell may move according to the location of a network node 110 that is mobile (e.g., a mobile network node) .
  • base station or “network node” may refer to an aggregated base station, a disaggregated base station, an integrated access and backhaul (IAB) node, a relay node, or one or more components thereof.
  • base station or “network node” may refer to a CU, a DU, an RU, a Near-Real Time (Near-RT) RAN Intelligent Controller (RIC) , or a Non-Real Time (Non-RT) RIC, or a combination thereof.
  • the terms “base station” or “network node” may refer to one device configured to perform one or more functions, such as those described herein in connection with the network node 110.
  • the terms “base station” or “network node” may refer to a plurality of devices configured to perform the one or more functions. For example, in some distributed systems, each of a quantity of different devices (which may be located in the same geographic location or in different geographic locations) may be configured to perform at least a portion of a function, or to duplicate performance of at least a portion of the function, and the terms “base station” or “network node” may refer to any one or more of those different devices.
  • the terms “base station” or “network node” may refer to one or more virtual base stations or one or more virtual base station functions. For example, in some aspects, two or more base station functions may be instantiated on a single device.
  • the terms “base station” or “network node” may refer to one of the base station functions and not another. In this way, a single device may include more than one base station.
  • the wireless network 100 may include one or more relay stations.
  • a relay station is a network node that can receive a transmission of data from an upstream node (e.g., a network node 110 or a UE 120) and send a transmission of the data to a downstream node (e.g., a UE 120 or a network node 110) .
  • a relay station may be a UE 120 that can relay transmissions for other UEs 120.
  • the network node 110d e.g., a relay network node
  • the network node 110a may communicate with the network node 110a (e.g., a macro network node) and the UE 120d in order to facilitate communication between the network node 110a and the UE 120d.
  • a network node 110 that relays communications may be referred to as a relay station, a relay base station, a relay network node, a relay node, a relay, or the like.
  • the wireless network 100 may be a heterogeneous network that includes network nodes 110 of different types, such as macro network nodes, pico network nodes, femto network nodes, relay network nodes, or the like. These different types of network nodes 110 may have different transmit power levels, different coverage areas, and/or different impacts on interference in the wireless network 100. For example, macro network nodes may have a high transmit power level (e.g., 5 to 40 watts) whereas pico network nodes, femto network nodes, and relay network nodes may have lower transmit power levels (e.g., 0.1 to 2 watts) .
  • macro network nodes may have a high transmit power level (e.g., 5 to 40 watts)
  • pico network nodes, femto network nodes, and relay network nodes may have lower transmit power levels (e.g., 0.1 to 2 watts) .
  • a network controller 130 may couple to or communicate with a set of network nodes 110 and may provide coordination and control for these network nodes 110.
  • the network controller 130 may communicate with the network nodes 110 via a backhaul communication link or a midhaul communication link.
  • the network nodes 110 may communicate with one another directly or indirectly via a wireless or wireline backhaul communication link.
  • the network controller 130 may be a CU or a core network device, or may include a CU or a core network device.
  • the UEs 120 may be dispersed throughout the wireless network 100, and each UE 120 may be stationary or mobile.
  • a UE 120 may include, for example, an access terminal, a terminal, a mobile station, and/or a subscriber unit.
  • a UE 120 may be a cellular phone (e.g., 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, a biometric device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring or a smart bracelet) ) , an entertainment device (e.g., a music device, a video device, and/or a satellite radio)
  • Some UEs 120 may be considered machine-type communication (MTC) or evolved or enhanced machine-type communication (eMTC) UEs.
  • An MTC UE and/or an eMTC UE may include, for example, a robot, a drone, a remote device, a sensor, a meter, a monitor, and/or a location tag, that may communicate with a network node, another device (e.g., a remote device) , or some other entity.
  • Some UEs 120 may be considered Internet-of-Things (IoT) devices, and/or may be implemented as NB-IoT (narrowband IoT) devices.
  • Some UEs 120 may be considered a Customer Premises Equipment.
  • a UE 120 may be included inside a housing that houses components of the UE 120, such as processor components and/or memory components.
  • the processor components and the memory components may be coupled together.
  • the processor components e.g., one or more processors
  • the memory components e.g., a memory
  • the processor components and the memory components may be operatively coupled, communicatively coupled, electronically coupled, and/or electrically coupled.
  • any number of wireless networks 100 may be deployed in a given geographic area.
  • Each wireless network 100 may support a particular RAT and may operate on one or more frequencies.
  • a RAT may be referred to as a radio technology, an air interface, or the like.
  • a frequency may be referred to as a carrier, a frequency channel, or the like.
  • 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 using one or more sidelink channels (e.g., without using a network node 110 as an intermediary to communicate with one another) .
  • the UEs 120 may communicate using peer-to-peer (P2P) communications, device-to-device (D2D) communications, a vehicle-to-everything (V2X) protocol (e.g., which may include a vehicle-to-vehicle (V2V) protocol, a vehicle-to-infrastructure (V2I) protocol, or a vehicle-to-pedestrian (V2P) protocol) , and/or a mesh network.
  • V2X vehicle-to-everything
  • a UE 120 may perform scheduling operations, resource selection operations, and/or other operations described elsewhere herein as being performed by the network node 110.
  • Devices of the wireless network 100 may communicate using the electromagnetic spectrum, which may be subdivided by frequency or wavelength into various classes, bands, channels, or the like. For example, devices of the wireless network 100 may communicate using one or more operating bands.
  • devices of the wireless network 100 may communicate using one or more operating bands.
  • two initial operating bands have been identified as frequency range designations FR1 (410 MHz –7.125 GHz) and FR2 (24.25 GHz –52.6 GHz) . It should be understood that although a portion of FR1 is greater than 6 GHz, FR1 is often referred to (interchangeably) as a “Sub-6 GHz” band in various documents and articles.
  • FR2 which is often referred to (interchangeably) as a “millimeter wave” band in documents and articles, 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
  • ITU International Telecommunications Union
  • FR3 7.125 GHz –24.25 GHz
  • FR3 7.125 GHz –24.25 GHz
  • Frequency bands falling within FR3 may inherit FR1 characteristics and/or FR2 characteristics, and thus may effectively extend features of FR1 and/or FR2 into mid-band frequencies.
  • higher frequency bands are currently being explored to extend 5G NR operation beyond 52.6 GHz.
  • FR4a or FR4-1 52.6 GHz –71 GHz
  • FR4 52.6 GHz –114.25 GHz
  • FR5 114.25 GHz –300 GHz
  • sub-6 GHz may broadly represent frequencies that may be less than 6 GHz, may be within FR1, or may include mid-band frequencies.
  • millimeter wave may broadly represent frequencies that may include mid-band frequencies, may be within FR2, FR4, FR4-a or FR4-1, and/or FR5, or may be within the EHF band.
  • frequencies included in these operating bands may be modified, and techniques described herein are applicable to those modified frequency ranges.
  • the UE 120 may include a communication manager 140.
  • the communication manager 140 may switch to a first network from a second network; measure an RSRP of a first cell associated with the first network; and switch from the first network to the second network as a result of a drop in the RSRP. Additionally, or alternatively, the communication manager 140 may perform one or more other operations described herein.
  • the network node 110 may include a communication manager 150.
  • the communication manager 150 may configure a UE to switch to a first network from a second network; configure the UE to measure an RSRP of a first cell associated with the first network; and configure the UE to switch from the first network to the second network as a result of a drop in the RSRP. Additionally, or alternatively, the communication manager 150 may perform one or more other operations described herein.
  • Fig. 1 is provided as an example. Other examples may differ from what is described with regard to Fig. 1.
  • Fig. 2 is a diagram illustrating an example 200 of a network node 110 in communication with a UE 120 in a wireless network 100, in accordance with the present disclosure.
  • the network node 110 may be equipped with a set of antennas 234a through 234t, such as T antennas (T ⁇ 1) .
  • the UE 120 may be equipped with a set of antennas 252a through 252r, such as R antennas (R ⁇ 1) .
  • the network node 110 of example 200 includes one or more radio frequency components, such as antennas 234 and a modem 232.
  • a network node 110 may include an interface, a communication component, or another component that facilitates communication with the UE 120 or another network node.
  • Some network nodes 110 may not include radio frequency components that facilitate direct communication with the UE 120, such as one or more CUs, or one or more DUs.
  • a transmit processor 220 may receive data, from a data source 212, intended for the UE 120 (or a set of UEs 120) .
  • the transmit processor 220 may select one or more modulation and coding schemes (MCSs) for the UE 120 based at least in part on one or more channel quality indicators (CQIs) received from that UE 120.
  • MCSs modulation and coding schemes
  • CQIs channel quality indicators
  • the network node 110 may process (e.g., encode and modulate) the data for the UE 120 based at least in part on the MCS (s) selected for the UE 120 and may provide data symbols for the UE 120.
  • the transmit processor 220 may process system information (e.g., for semi-static resource partitioning information (SRPI) ) and control information (e.g., CQI requests, grants, and/or upper layer signaling) and provide overhead symbols and control symbols.
  • the transmit processor 220 may generate reference symbols for reference signals (e.g., a cell-specific reference signal (CRS) or a demodulation reference signal (DMRS) ) and synchronization signals (e.g., a primary synchronization signal (PSS) or a secondary synchronization signal (SSS) ) .
  • reference signals e.g., a cell-specific reference signal (CRS) or a demodulation reference signal (DMRS)
  • synchronization signals e.g., a primary synchronization signal (PSS) or a secondary synchronization signal (SSS)
  • a transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on the data symbols, the control symbols, the overhead symbols, and/or the reference symbols, if applicable, and may provide a set of output symbol streams (e.g., T output symbol streams) to a corresponding set of modems 232 (e.g., T modems) , shown as modems 232a through 232t.
  • each output symbol stream may be provided to a modulator component (shown as MOD) of a modem 232.
  • Each modem 232 may use a respective modulator component to process a respective output symbol stream (e.g., for OFDM) to obtain an output sample stream.
  • Each modem 232 may further use a respective modulator component to process (e.g., convert to analog, amplify, filter, and/or upconvert) the output sample stream to obtain a downlink signal.
  • the modems 232a through 232t may transmit a set of downlink signals (e.g., T downlink signals) via a corresponding set of antennas 234 (e.g., T antennas) , shown as antennas 234a through 234t.
  • a set of antennas 252 may receive the downlink signals from the network node 110 and/or other network nodes 110 and may provide a set of received signals (e.g., R received signals) to a set of modems 254 (e.g., R modems) , shown as modems 254a through 254r.
  • R received signals e.g., R received signals
  • each received signal may be provided to a demodulator component (shown as DEMOD) of a modem 254.
  • DEMOD demodulator component
  • Each modem 254 may use a respective demodulator component to condition (e.g., filter, amplify, downconvert, and/or digitize) a received signal to obtain input samples.
  • Each modem 254 may use a demodulator component to further process the input samples (e.g., for OFDM) to obtain received symbols.
  • a MIMO detector 256 may obtain received symbols from the modems 254, may perform MIMO detection on the received symbols if applicable, and may provide detected symbols.
  • a receive processor 258 may process (e.g., demodulate and decode) the detected symbols, may provide decoded data for the UE 120 to a data sink 260, and may 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 thereof.
  • a channel processor may determine an RSRP parameter, a received signal strength indicator (RSSI) parameter, a reference signal received quality (RSRQ) parameter, and/or a CQI parameter, among other examples.
  • RSSI received signal strength indicator
  • RSSRQ reference signal received quality
  • CQI CQI parameter
  • the network controller 130 may include a communication unit 294, a controller/processor 290, and a memory 292.
  • the network controller 130 may include, for example, one or more devices in a core network.
  • the network controller 130 may communicate with the network node 110 via the communication unit 294.
  • One or more antennas may include, or may be included within, one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, and/or one or more antenna arrays, among other examples.
  • An antenna panel, an antenna group, a set of antenna elements, and/or an antenna array may include one or more antenna elements (within a single housing or multiple housings) , a set of coplanar antenna elements, a set of non-coplanar antenna elements, and/or one or more antenna elements coupled to one or more transmission and/or reception components, such as one or more components of Fig. 2.
  • a transmit processor 264 may receive and process data from a data source 262 and control information (e.g., for reports that include RSRP, RSSI, RSRQ, and/or CQI) from the controller/processor 280.
  • the transmit processor 264 may generate reference symbols for one or more reference signals.
  • the symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266 if applicable, further processed by the modems 254 (e.g., for DFT-s-OFDM or CP-OFDM) , and transmitted to the network node 110.
  • the modem 254 of the UE 120 may include a modulator and a demodulator.
  • the UE 120 includes a transceiver.
  • the transceiver may include any combination of the antenna (s) 252, the modem (s) 254, the MIMO detector 256, the receive processor 258, the transmit processor 264, and/or the TX MIMO processor 266.
  • the transceiver may be used by a processor (e.g., the controller/processor 280) and the memory 282 to perform aspects of any of the methods described herein (e.g., with reference to Figs. 4-10) .
  • the uplink signals from UE 120 and/or other UEs may be received by the antennas 234, processed by the modem 232 (e.g., a demodulator component, shown as DEMOD, of the modem 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 the UE 120.
  • the receive processor 238 may provide the decoded data to a data sink 239 and provide the decoded control information to the controller/processor 240.
  • the network node 110 may include a communication unit 244 and may communicate with the network controller 130 via the communication unit 244.
  • the network node 110 may include a scheduler 246 to schedule one or more UEs 120 for downlink and/or uplink communications.
  • the modem 232 of the network node 110 may include a modulator and a demodulator.
  • the network node 110 includes a transceiver.
  • the transceiver may include any combination of the antenna (s) 234, the modem (s) 232, the MIMO detector 236, the receive processor 238, the transmit processor 220, and/or the TX MIMO processor 230.
  • the transceiver may be used by a processor (e.g., the controller/processor 240) and the memory 242 to perform aspects of any of the methods described herein (e.g., with reference to Figs. 4-10) .
  • the controller/processor 240 of the network node 110, the controller/processor 280 of the UE 120, and/or any other component (s) of Fig. 2 may perform one or more techniques associated with switching networks based on a drop in an RSRP measurement, as described in more detail elsewhere herein.
  • the controller/processor 240 of the network node 110, the controller/processor 280 of the UE 120, and/or any other component (s) of Fig. 2 may perform or direct operations of, for example, process 700 of Fig. 7, process 800 of Fig. 8, and/or other processes as described herein.
  • the memory 242 and the memory 282 may store data and program codes for the network node 110 and the UE 120, respectively.
  • the memory 242 and/or the memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and/or program code) for wireless communication.
  • the one or more instructions when executed (e.g., directly, or after compiling, converting, and/or interpreting) by one or more processors of the network node 110 and/or the UE 120, may cause the one or more processors, the UE 120, and/or the network node 110 to perform or direct operations of, for example, process 700 of Fig. 7, process 800 of Fig. 8, and/or other processes as described herein.
  • executing instructions may include running the instructions, converting the instructions, compiling the instructions, and/or interpreting the instructions, among other examples.
  • the UE 120 includes means for switching to a first network from a second network; means for measuring an RSRP of a first cell associated with the first network; and/or means for switching from the first network to the second network as a result of a drop in the RSRP.
  • the means for the UE 120 to perform operations described herein may include, for example, one or more of communication manager 140, antenna 252, modem 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, controller/processor 280, or memory 282.
  • the network node 110 includes means for configuring a UE to switch to a first network from a second network; means for configuring the UE to measure an RSRP of a first cell associated with the first network; and/or means for configuring the UE to switch from the first network to the second network as a result of a drop in the RSRP.
  • the means for the network node 110 to perform operations described herein may include, for example, one or more of communication manager 150, transmit processor 220, TX MIMO processor 230, modem 232, antenna 234, MIMO detector 236, receive processor 238, controller/processor 240, memory 242, or scheduler 246.
  • While blocks in Fig. 2 are illustrated as distinct components, the functions described above with respect to the blocks may be implemented in a single hardware, software, or combination component or in various combinations of components.
  • the functions described with respect to the transmit processor 264, the receive processor 258, and/or the TX MIMO processor 266 may be performed by or under the control of the controller/processor 280.
  • Fig. 2 is provided as an example. Other examples may differ from what is described with regard to Fig. 2.
  • Deployment of communication systems may be arranged in multiple manners with various components or constituent parts.
  • a network node, a network entity, a mobility element of a network, a RAN node, a core network node, a network element, a base station, or a network equipment may be implemented in an aggregated or disaggregated architecture.
  • a base station such as a Node B (NB) , an evolved NB (eNB) , an NR base station, a 5G NB, an access point (AP) , a TRP, or a cell, among other examples
  • NB Node B
  • eNB evolved NB
  • AP access point
  • TRP TRP
  • a cell a cell
  • a base station such as a Node B (NB) , an evolved NB (eNB) , an NR base station, a 5G NB, an access point (AP) , a TRP, or a cell, among other examples
  • a base station such as a Node B (NB) , an evolved NB (eNB) , an NR base station, a 5G NB, an access point (AP) , a TRP, or a cell, among other examples
  • AP access point
  • TRP TRP
  • a cell a cell, among other examples
  • Network entity or “network node”
  • An aggregated base station may be configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node (e.g., within a single device or unit) .
  • a disaggregated base station e.g., a disaggregated network node
  • a CU may be implemented within a network node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually distributed throughout one or multiple other network nodes.
  • the DUs may be implemented to communicate with one or more RUs.
  • Each of the CU, DU, and RU also can be implemented as virtual units, such as a virtual central unit (VCU) , a virtual distributed unit (VDU) , or a virtual radio unit (VRU) , among other examples.
  • VCU virtual central unit
  • VDU virtual distributed unit
  • VRU virtual radio unit
  • Base station-type operation or network design may consider aggregation characteristics of base station functionality.
  • disaggregated base stations may be utilized in an IAB network, an open radio access network (O-RAN (such as the network configuration sponsored by the O-RAN Alliance) ) , or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN) ) to facilitate scaling of communication systems by separating base station functionality into one or more units that can be individually deployed.
  • a disaggregated base station may include functionality implemented across two or more units at various physical locations, as well as functionality implemented for at least one unit virtually, which can enable flexibility in network design.
  • the various units of the disaggregated base station can be configured for wired or wireless communication with at least one other unit of the disaggregated base station.
  • Fig. 3 is a diagram illustrating an example disaggregated base station architecture 300, in accordance with the present disclosure.
  • the disaggregated base station architecture 300 may include a CU 310 that can communicate directly with a core network 320 via a backhaul link, or indirectly with the core network 320 through one or more disaggregated control units (such as a Near-RT RIC 325 via an E2 link, or a Non-RT RIC 315 associated with a Service Management and Orchestration (SMO) Framework 305, or both) .
  • a CU 310 may communicate with one or more DUs 330 via respective midhaul links, such as through F1 interfaces.
  • Each of the DUs 330 may communicate with one or more RUs 340 via respective fronthaul links.
  • Each of the RUs 340 may communicate with one or more UEs 120 via respective radio frequency (RF) access links.
  • RF radio frequency
  • Each of the units may include one or more interfaces or be coupled with one or more interfaces configured to receive or transmit signals, data, or information (collectively, signals) via a wired or wireless transmission medium.
  • Each of the units, or an associated processor or controller providing instructions to one or multiple communication interfaces of the respective unit, can be configured to communicate with one or more of the other units via the transmission medium.
  • each of the units can include a wired interface, configured to receive or transmit signals over a wired transmission medium to one or more of the other units, and a wireless interface, which may include a receiver, a transmitter or transceiver (such as an RF transceiver) , configured to receive or transmit signals, or both, over a wireless transmission medium to one or more of the other units.
  • a wireless interface which may include a receiver, a transmitter or transceiver (such as an RF transceiver) , configured to receive or transmit signals, or both, over a wireless transmission medium to one or more of the other units.
  • the CU 310 may host one or more higher layer control functions.
  • control functions can include radio resource control (RRC) functions, packet data convergence protocol (PDCP) functions, or service data adaptation protocol (SDAP) functions, among other examples.
  • RRC radio resource control
  • PDCP packet data convergence protocol
  • SDAP service data adaptation protocol
  • Each control function can be implemented with an interface configured to communicate signals with other control functions hosted by the CU 310.
  • the CU 310 may be configured to handle user plane functionality (for example, Central Unit –User Plane (CU-UP) functionality) , control plane functionality (for example, Central Unit –Control Plane (CU-CP) functionality) , or a combination thereof.
  • the CU 310 can be logically split into one or more CU-UP units and one or more CU-CP units.
  • a CU-UP unit can communicate bidirectionally with a CU-CP unit via an interface, such as the E1 interface when implemented in an O-RAN configuration.
  • the CU 310 can be implemented to communicate with a DU 330, as necessary, for network control and signaling.
  • Each DU 330 may correspond to a logical unit that includes one or more base station functions to control the operation of one or more RUs 340.
  • the DU 330 may host one or more of a radio link control (RLC) layer, a medium access control (MAC) layer, and one or more high physical (PHY) layers depending, at least in part, on a functional split, such as a functional split defined by the 3GPP.
  • the one or more high PHY layers may be implemented by one or more modules for forward error correction (FEC) encoding and decoding, scrambling, and modulation and demodulation, among other examples.
  • FEC forward error correction
  • the DU 330 may further host one or more low PHY layers, such as implemented by one or more modules for a fast Fourier transform (FFT) , an inverse FFT (iFFT) , digital beamforming, or physical random access channel (PRACH) extraction and filtering, among other examples.
  • FFT fast Fourier transform
  • iFFT inverse FFT
  • PRACH physical random access channel
  • Each layer (which also may be referred to as a module) can be implemented with an interface configured to communicate signals with other layers (and modules) hosted by the DU 330, or with the control functions hosted by the CU 310.
  • Each RU 340 may implement lower-layer functionality.
  • an RU 340, controlled by a DU 330 may correspond to a logical node that hosts RF processing functions or low-PHY layer functions, such as performing an FFT, performing an iFFT, digital beamforming, or PRACH extraction and filtering, among other examples, based on a functional split (for example, a functional split defined by the 3GPP) , such as a lower layer functional split.
  • each RU 340 can be operated to handle over the air (OTA) communication with one or more UEs 120.
  • OTA over the air
  • real-time and non-real-time aspects of control and user plane communication with the RU (s) 340 can be controlled by the corresponding DU 330.
  • this configuration can enable each DU 330 and the CU 310 to be implemented in a cloud-based RAN architecture, such as a vRAN architecture.
  • the SMO Framework 305 may be configured to support RAN deployment and provisioning of non-virtualized and virtualized network elements.
  • the SMO Framework 305 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements, which may be managed via an operations and maintenance interface (such as an O1 interface) .
  • the SMO Framework 305 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) platform 390) to perform network element life cycle management (such as to instantiate virtualized network elements) via a cloud computing platform interface (such as an O2 interface) .
  • a cloud computing platform such as an open cloud (O-Cloud) platform 390
  • network element life cycle management such as to instantiate virtualized network elements
  • a cloud computing platform interface such as an O2 interface
  • Such virtualized network elements can include, but are not limited to, CUs 310, DUs 330, RUs 340, non-RT RICs 315, and Near-RT RICs 325.
  • the SMO Framework 305 can communicate with a hardware aspect of a 4G RAN, such as an open eNB (O-eNB) 311, via an O1 interface. Additionally, in some implementations, the SMO Framework 305 can communicate directly with each of one or more RUs 340 via a respective O1 interface.
  • the SMO Framework 305 also may include a Non-RT RIC 315 configured to support functionality of the SMO Framework 305.
  • the Non-RT RIC 315 may be configured to include a logical function that enables non-real-time control and optimization of RAN elements and resources, Artificial Intelligence/Machine Learning (AI/ML) workflows including model training and updates, or policy-based guidance of applications/features in the Near-RT RIC 325.
  • the Non-RT RIC 315 may be coupled to or communicate with (such as via an A1 interface) the Near-RT RIC 325.
  • the Near-RT RIC 325 may be configured to include a logical function that enables near-real-time control and optimization of RAN elements and resources via data collection and actions over an interface (such as via an E2 interface) connecting one or more CUs 310, one or more DUs 330, or both, as well as an O-eNB, with the Near-RT RIC 325.
  • the Non-RT RIC 315 may receive parameters or external enrichment information from external servers. Such information may be utilized by the Near-RT RIC 325 and may be received at the SMO Framework 305 or the Non-RT RIC 315 from non-network data sources or from network functions. In some examples, the Non-RT RIC 315 or the Near-RT RIC 325 may be configured to tune RAN behavior or performance. For example, the Non-RT RIC 315 may monitor long-term trends and patterns for performance and employ AI/ML models to perform corrective actions through the SMO Framework 305 (such as reconfiguration via an O1 interface) or via creation of RAN management policies (such as A1 interface policies) .
  • Fig. 3 is provided as an example. Other examples may differ from what is described with regard to Fig. 3.
  • Fig. 4 is a diagram illustrating an example 400 of physical channels and reference signals in a wireless network, in accordance with the present disclosure.
  • downlink channels and downlink reference signals may carry information from a network node 110 to a UE 120
  • uplink channels and uplink reference signals may carry information from a UE 120 to a network node 110.
  • a downlink channel may include a physical downlink control channel (PDCCH) that carries downlink control information (DCI) , a physical downlink shared channel (PDSCH) that carries downlink data, or a physical broadcast channel (PBCH) that carries system information, among other examples.
  • PDSCH communications may be scheduled by PDCCH communications.
  • an uplink channel may include a physical uplink control channel (PUCCH) that carries uplink control information (UCI) , a physical uplink shared channel (PUSCH) that carries uplink data, or a physical random access channel (PRACH) used for initial network access, among other examples.
  • the UE 120 may transmit acknowledgement (ACK) or negative acknowledgement (NACK) feedback (e.g., ACK/NACK feedback or ACK/NACK information) in UCI on the PUCCH and/or the PUSCH.
  • ACK acknowledgement
  • NACK negative acknowledgement
  • a downlink reference signal may include a synchronization signal block (SSB) , a channel state information (CSI) reference signal (CSI-RS) , a demodulation reference signal (DMRS) , a positioning reference signal (PRS) , or a phase tracking reference signal (PTRS) , among other examples.
  • a uplink reference signal may include a sounding reference signal (SRS) , a DMRS, or a PTRS, among other examples.
  • An SSB may carry information used for initial network acquisition and synchronization, such as a primary synchronization signal (PSS) , a secondary synchronization signal (SSS) , a PBCH, and a PBCH DMRS.
  • PSS primary synchronization signal
  • SSS secondary synchronization signal
  • PBCH PBCH
  • DMRS PBCH DMRS
  • An SSB is sometimes referred to as a synchronization signal/PBCH (SS/PBCH) block.
  • the network node 110 may transmit multiple SSBs on multiple corresponding beams, and the SSBs may be used for beam selection.
  • a CSI-RS may carry information used for downlink channel estimation (e.g., downlink CSI acquisition) , which may be used for scheduling, link adaptation, or beam management, among other examples.
  • the network node 110 may configure a set of CSI-RSs for the UE 120, and the UE 120 may measure the configured set of CSI-RSs.
  • the UE 120 may perform channel estimation and may report channel estimation parameters to the network node 110 (e.g., in a CSI report) , such as a channel quality indicator (CQI) , a precoding matrix indicator (PMI) , a CSI-RS resource indicator (CRI) , a layer indicator (LI) , a rank indicator (RI) , or the RSRP, among other examples.
  • CQI channel quality indicator
  • PMI precoding matrix indicator
  • CRI CSI-RS resource indicator
  • LI layer indicator
  • RI rank indicator
  • RSRP rank indicator
  • the network node 110 may use the CSI report to select transmission parameters for downlink communications to the UE 120, such as a number of transmission layers (e.g., a rank) , a precoding matrix (e.g., a precoder) , a modulation and coding scheme (MCS) , or a refined downlink beam (e.g., using a beam refinement procedure or a beam management procedure) , among other examples.
  • a number of transmission layers e.g., a rank
  • a precoding matrix e.g., a precoder
  • MCS modulation and coding scheme
  • a refined downlink beam e.g., using a beam refinement procedure or a beam management procedure
  • a DMRS may carry information used to estimate a radio channel for demodulation of an associated physical channel (e.g., PDCCH, PDSCH, PBCH, PUCCH, or PUSCH) .
  • the design and mapping of a DMRS may be specific to a physical channel for which the DMRS is used for estimation.
  • DMRSs are UE-specific, can be beamformed, can be confined in a scheduled resource (e.g., rather than transmitted on a wideband) , and can be transmitted only when necessary. As shown, DMRSs are used for both downlink communications and uplink communications.
  • a PTRS may carry information used to compensate for oscillator phase noise.
  • the phase noise increases as the oscillator carrier frequency increases.
  • PTRS can be utilized at high carrier frequencies, such as millimeter wave frequencies, to mitigate phase noise.
  • the PTRS may be used to track the phase of the local oscillator and to enable suppression of phase noise and common phase error (CPE) .
  • CPE common phase error
  • PTRSs are used for both downlink communications (e.g., on the PDSCH) and uplink communications (e.g., on the PUSCH) .
  • a PRS may carry information used to enable timing or ranging measurements of the UE 120 based on signals transmitted by the network node 110 to improve observed time difference of arrival (OTDOA) positioning performance.
  • a PRS may be a pseudo-random Quadrature Phase Shift Keying (QPSK) sequence mapped in diagonal patterns with shifts in frequency and time to avoid collision with cell-specific reference signals and control channels (e.g., a PDCCH) .
  • QPSK Quadrature Phase Shift Keying
  • a PRS may be designed to improve detectability by the UE 120, which may need to detect downlink signals from multiple neighboring network nodes in order to perform OTDOA-based positioning.
  • the UE 120 may receive a PRS from multiple cells (e.g., a reference cell and one or more neighbor cells) , and may report a reference signal time difference (RSTD) based on OTDOA measurements associated with the PRSs received from the multiple cells.
  • RSTD reference signal time difference
  • the network node 110 may then calculate a position of the UE 120 based on the RSTD measurements reported by the UE 120.
  • An SRS may carry information used for uplink channel estimation, which may be used for scheduling, link adaptation, precoder selection, or beam management, among other examples.
  • the network node 110 may configure one or more SRS resource sets for the UE 120, and the UE 120 may transmit SRSs on the configured SRS resource sets.
  • An SRS resource set may have a configured usage, such as uplink CSI acquisition, downlink CSI acquisition for reciprocity-based operations, uplink beam management, among other examples.
  • the network node 110 may measure the SRSs, may perform channel estimation based at least in part on the measurements, and may use the SRS measurements to configure communications with the UE 120.
  • Fig. 4 is provided as an example. Other examples may differ from what is described with regard to Fig. 4.
  • the UE 120 may switch between network types depending on various circumstances. For example, at ground level, the UE 120 may have a strong signal on a 5G network. In a basement or parking garage, the UE 120 may have a strong signal on an LTE network. When the UE 120 moves to a new location (such as from ground level to a basement or parking garage) , the UE 120 may experience reduced network performance by remaining on the 5G network. Likewise, when moving back to the ground level from the basement or parking garage, the UE 120 may stay connected to the LTE network even though network performance could be improved by returning to the 5G network.
  • Some techniques and apparatuses described herein enable a UE to switch to a first network from a second network, measure an RSRP of a first cell associated with the first network, and switch from the first network to the second network as a result of a drop in the RSRP.
  • the UE may more quickly determine that the UE has moved back to an area where it may benefit the UE to switch back to, for example, the second network.
  • the UE may experience better network performance by quickly returning to the second network.
  • Some techniques and apparatuses described herein enable a network node to configure a UE to switch to a first network from a second network, configure the UE to measure an RSRP of a first cell associated with the first network, and configure the UE to switch from the first network to the second network as a result of a drop in the RSRP.
  • a network node to configure a UE to switch to a first network from a second network, configure the UE to measure an RSRP of a first cell associated with the first network, and configure the UE to switch from the first network to the second network as a result of a drop in the RSRP.
  • Fig. 5 is a diagram illustrating an example 500 associated with detecting a drop in an RSRP measurement, in accordance with the present disclosure.
  • example 500 includes communication between a network node 110 and a UE 120.
  • the network node 110 and the UE 120 may be included in a wireless network, such as the wireless network 100.
  • the network node 110 and the UE 120 may communicate via a wireless access link, which may include an uplink and a downlink.
  • the UE 120 may receive a reference signal from a serving cell of the network node 110.
  • the UE 120 may perform multiple measurements of the reference signal to determine the RSRP associated with the reference signal. For example, as shown in Fig. 5, the UE 120 may perform a first measurement at time T 1 and a second measurement at time T 2 . In some aspects, the measurements at T 1 and T 2 may both occur after the UE 120 has switched to a network node 110 associated with a first network (such as an LTE network) from a network node 110 associated with a second network (such as a 5G network) .
  • a first network such as an LTE network
  • a second network such as a 5G network
  • the UE 120 may be configured to switch back to communicating via a network node 110 associated with the second network.
  • the UE 120 may be configured to compare the change in RSRP to a predetermined threshold.
  • the measurements at T 1 and T 2 may be configured to occur at a minimum interval relative to one another, and the predetermined threshold may be a function of the minimum interval.
  • the UE 120 may be configured to switch back to communicating via the network node 110 associated with the second network as a result of the drop in the RSRP exceeding the predetermined threshold.
  • whether the UE 120 switches back to communicating via the network node 110 associated with the second network may be based, at least in part, on whether the network node 110 associated with the first network configured a B event.
  • a B event may occur if, for example, the network node 110 associated with the first network configuration attempts to transfer the UE 120 to a neighboring cell, also associated with the first network.
  • the term “B event” may refer to a measurement event to help the network node 110 associated with the first network identify an appropriate neighboring node.
  • the network node 110 may configure a B event by initiating a handover between the UE 120 and a neighboring mode.
  • the UE 120 may be configured to determine whether to switch back to the second network or continue communicating over the first network. For example, in some aspects, the UE 120 may be configured to compare the RSRP of a serving cell (associated with the first network) to a first early failure signaling (EFS) value. In some aspects, the UE 120 may also be configured to compare a difference between the RSRP of a target serving cell associated with the second network and the RSRP of the serving cell associated with the first network to a second EFS value.
  • EFS early failure signaling
  • the UE 120 may be configured to switch from the first network to the second network as a result of the RSRP of the serving cell associated with the first network being less than or equal to the first EFS value, and the difference between the RSRP of the target serving cell associated with the second network and the RSRP of the serving cell associated with the first network being greater than or equal to the second EFS value.
  • whether to switch from the first network back to the second network may be based, at least in part, on a time-to-trigger (TTT) value.
  • the TTT value may be an evaluation time of the B event configured by the first network.
  • the TTT is based, at least in part, on a fourth EFS value.
  • Each EFS value may be a predetermined, configured, or indicated value.
  • the UE 120 may be configured to perform an automatic measurement process.
  • the automatic measurement process may include performing a process for automatically adding a gap between RSRP measurements on the target cell of the second network.
  • the RSRP measurements may be applied with a periodicity according to a fourth EFS value, which may be predetermined, configured, or indicated. If the RSRP of the target cell exceeds a fifth EFS value, the UE 120 may trigger a local release of resources associated with the first network and camp on the target cell associated with the second network.
  • the UE 120 in response to a drop in the RSRP of the first cell associated with the first network, the UE 120 can more quickly return to communication via a second cell associated with the second network.
  • Fig. 5 is provided as an example. Other examples may differ from what is described with respect to Fig. 5.
  • Fig. 6 is a diagram illustrating an example 600 associated with RSRP measurements after switching to a first network from a second network, in accordance with the present disclosure.
  • a network node 110 and a UE 120 may communicate with one another.
  • the UE 120 may switch to a first network from a second network.
  • the first network is an LTE network and the second network is a 5G network.
  • the UE 120 may be configured to switch to the first network as a result of the UE 120 moving to a location where the UE 120 experiences better network performance with the first network than the second network. For example, if the UE 120 is communicating over a 5G network and moves into a basement or parking garage, the UE 120 may experience better network performance by switching to an LTE network.
  • a first cell may transmit, and the UE 120 may receive, a reference signal.
  • the first cell may be associated with the first network.
  • the UE 120 may measure the RSRP of the reference signal transmitted by the first cell.
  • measuring the RSRP of the first cell associated with the first network includes measuring a change in the RSRP over a predetermined period of time. The change may include a drop in the RSRP during the predetermined period of time.
  • the UE 120 may switch from the first network to the second network based, at least in part, on the change in the measured RSRP over the predetermined period of time. In some aspects, the UE 120 may switch from the first network to the second network based, at least in part, on the drop in the RSRP over the predetermined period of time. In some aspects, the UE 120 may compare the change in the RSRP to a predetermined value and switch from the first network to the second network if the change in the RSRP exceeds the predetermined value.
  • whether the UE 120 switches from the first network to the second network may be based, at least in part, on whether a B event has been configured by the first cell. If the B event has been configured, the UE 120 may perform a fast measurement report procedure.
  • the fast measurement report procedure may include the UE 120 measuring the RSRP of the second cell (associated with the second network) .
  • the fast measurement report procedure may include the UE 120 comparing the RSRP of the first cell to a first EFS value.
  • the fast measurement report procedure may include the UE 120 comparing a difference between the RSRP of the second cell and the RSRP of the first cell to a second EFS value.
  • the UE 120 may switch from the first network to the second network as a result of the RSRP of the first cell being less than or equal to the first EFS value, and the difference of the RSRP of the second cell and the RSRP of the first cell being greater than or equal to the second EFS value.
  • measuring the RSRP of the second cell is based, at least in part, on a TTT value.
  • the TTT value is based, at least in part, on an evaluation timer of the B event and a third EFS value.
  • the UE 120 may perform an automatic measurement procedure prior to switching from the first network to the second network.
  • the automatic measurement procedure may include applying an automatic gap between measurements of at least two target frequencies.
  • One or more of the at least two target frequencies may be based, at least in part, on previously camped frequencies associated with the second network.
  • the UE 120 may perform a fast return procedure.
  • the fast return procedure may include switching from the first network to the second network as a result of a target RSRP associated with the second network being equal to or greater than a fourth EFS value.
  • the fast return procedure may include the UE 120 releasing resources associated with the first network and camping on the second cell, which is associated with the target RSRP and the second network
  • Fig. 6 is provided as an example. Other examples may differ from what is described with respect to Fig. 6.
  • Fig. 7 is a diagram illustrating an example process 700 performed, for example, by a UE, in accordance with the present disclosure.
  • Example process 700 is an example where the UE (e.g., UE 120) performs operations associated with network switching based on RSRP drop detection.
  • process 700 may include switching to a first network from a second network (block 710) .
  • the UE e.g., using communication manager 906, depicted in Fig. 9
  • process 700 may include measuring an RSRP of a first cell associated with the first network (block 720) .
  • the UE e.g., using communication manager 906, depicted in Fig. 9
  • process 700 may include switching from the first network to the second network as a result of a drop in the RSRP (block 730) .
  • the UE e.g., using communication manager 906, depicted in Fig. 9
  • Process 700 may include additional aspects, such as any single aspect or any combination of aspects described below and/or in connection with one or more other processes described elsewhere herein.
  • measuring the RSRP of the first cell associated with the first network includes measuring a change in the RSRP over a predetermined period of time.
  • process 700 includes comparing the change in the RSRP to a predetermined value.
  • switching from the first network to the second network as a result of the drop in the RSRP occurs as a result of the change in the RSRP over the predetermined period of time exceeding the predetermined value.
  • process 700 includes determining whether a B event has been configured.
  • process 700 includes measuring the RSRP of a second cell, associated with the second network, as a result of determining that the B event has been configured.
  • process 700 includes comparing the RSRP of the first cell to a first EFS value.
  • process 700 includes comparing a difference between the RSRP of the second cell and the RSRP of the first cell to a second EFS value.
  • switching from the first network to the second network occurs as a result of the RSRP of the first cell being less than or equal to the first EFS value, and the difference of the RSRP of the second cell and the RSRP of the first cell being greater than or equal to the second EFS value.
  • measuring the RSRP of the second cell is based, at least in part, on a TTT value.
  • the TTT value is based, at least in part, on an evaluation timer of the B event and an early failure signaling value.
  • process 700 includes triggering an automatic measurement prior to switching to the first network from the second network as a result of determining that the B event was not configured.
  • triggering the automatic measurement includes applying an automatic gap between measurements of at least two target frequencies.
  • one or more of the at least two target frequencies are based, at least on part, on previously camped frequencies associated with the second network.
  • switching from the first network to the second network includes switching from the first network to the second network as a result of a target RSRP associated with the second network being equal to or greater than an EFS value.
  • switching from the first network to the second network includes releasing resources associated with the first network and camping on a second cell associated with the target RSRP and the second network.
  • process 700 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Fig. 7. Additionally, or alternatively, two or more of the blocks of process 700 may be performed in parallel.
  • Fig. 8 is a diagram illustrating an example process 800 performed, for example, by a network node, in accordance with the present disclosure.
  • Example process 800 is an example where the network node (e.g., network node 110) performs operations associated with network switching based on RSRP drop detection.
  • the network node e.g., network node 110
  • process 800 may include configuring a UE to switch to a first network from a second network (block 810) .
  • the network node e.g., using communication manager 1006, depicted in Fig. 10) may configure a UE to switch to a first network from a second network, as described above.
  • process 800 may include configuring the UE to measure an RSRP of a first cell associated with the first network (block 820) .
  • the network node e.g., using communication manager 1006, depicted in Fig. 10
  • process 800 may include configuring the UE to switch from the first network to the second network as a result of a drop in the RSRP (block 830) .
  • the network node e.g., using communication manager 1006, depicted in Fig. 10
  • Process 800 may include additional aspects, such as any single aspect or any combination of aspects described below and/or in connection with one or more other processes described elsewhere herein.
  • configuring the UE to measure the RSRP of the first cell associated with the first network includes configuring the UE to measure a change in the RSRP over a predetermined period of time.
  • process 800 includes configuring the UE to compare the change in the RSRP to a predetermined value.
  • configuring the UE to switch from the first network to the second network as a result of the drop in the RSRP occurs as a result of the change in the RSRP over the predetermined period of time exceeding the predetermined value.
  • process 800 includes configuring the UE to determine whether a B event has been configured.
  • process 800 includes configuring the UE to measure the RSRP of a second cell, associated with the second network, as a result of determining that the B event has been configured.
  • process 800 includes configuring the UE to compare the RSRP of the first cell to a first EFS value.
  • process 800 includes configuring the UE to compare a difference between the RSRP of the second cell and the RSRP of the first cell to a second EFS value.
  • configuring the UE to switch from the first network to the second network includes configuring the UE to switch from the first network to the second network as a result of the UE determining that the RSRP of the first cell is less than or equal to the first EFS value, and the difference of the RSRP of the second cell and the RSRP of the first cell is greater than or equal to the second EFS value.
  • configuring the UE to measure the RSRP of the second cell includes configuring the UE to measure the RSRP of the second cell based, at least in part, on a TTT value.
  • the TTT value is based, at least in part, on an evaluation timer of the B event and an early failure signaling value.
  • process 800 includes configuring the UE to trigger, as a result of the UE determining that the B event was not configured, an automatic measurement prior to switching to the first network from the second network.
  • configuring the UE to trigger the automatic measurement includes configuring the UE to apply an automatic gap between measurements of at least two target frequencies.
  • one or more of the at least two target frequencies are based, at least in part, on previously camped frequencies associated with the first network.
  • configuring the UE to switch from the first network to the second network includes configuring the UE to switch from the first network to the second network as a result of a target RSRP associated with the second network being equal to or greater than an EFS value.
  • configuring the UE to switch from the first network to the second network includes configuring the UE to release resources associated with the first network and camping on a second cell associated with the target RSRP and the second network.
  • process 800 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Fig. 8. Additionally, or alternatively, two or more of the blocks of process 800 may be performed in parallel.
  • Fig. 9 is a diagram of an example apparatus 900 for wireless communication, in accordance with the present disclosure.
  • the apparatus 900 may be a UE, or a UE may include the apparatus 900.
  • the apparatus 900 includes a reception component 902, a transmission component 904, and/or a communication manager 906, which may be in communication with one another (for example, via one or more buses and/or one or more other components) .
  • the communication manager 906 is the communication manager 140 described in connection with Fig. 1.
  • the apparatus 900 may communicate with another apparatus 908, such as a UE or a network node (such as a CU, a DU, an RU, or a base station) , using the reception component 902 and the transmission component 904.
  • another apparatus 908 such as a UE or a network node (such as a CU, a DU, an RU, or a base station) , using the reception component 902 and the transmission component 904.
  • the apparatus 900 may be configured to perform one or more operations described herein in connection with Figs. 4-6. Additionally, or alternatively, the apparatus 900 may be configured to perform one or more processes described herein, such as process 700 of Fig. 7.
  • the apparatus 900 and/or one or more components shown in Fig. 9 may include one or more components of the UE described in connection with Fig. 2. Additionally, or alternatively, one or more components shown in Fig. 9 may be implemented within one or more components described in connection with Fig. 2. Additionally, or alternatively, one or more components of the set of components 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 902 may receive communications, such as reference signals, control information, data communications, or a combination thereof, from the apparatus 908.
  • the reception component 902 may provide received communications to one or more other components of the apparatus 900.
  • the reception component 902 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 of the apparatus 900.
  • the reception component 902 may include one or more antennas, a modem, a demodulator, a MIMO detector, a receive processor, a controller/processor, a memory, or a combination thereof, of the UE described in connection with Fig. 2.
  • the transmission component 904 may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the apparatus 908.
  • one or more other components of the apparatus 900 may generate communications and may provide the generated communications to the transmission component 904 for transmission to the apparatus 908.
  • the transmission component 904 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 908.
  • the transmission component 904 may include one or more antennas, a modem, a modulator, a transmit MIMO processor, a transmit processor, a controller/processor, a memory, or a combination thereof, of the UE described in connection with Fig. 2. In some aspects, the transmission component 904 may be co-located with the reception component 902 in a transceiver.
  • the communication manager 906 may support operations of the reception component 902 and/or the transmission component 904. For example, the communication manager 906 may receive information associated with configuring reception of communications by the reception component 902 and/or transmission of communications by the transmission component 904. Additionally, or alternatively, the communication manager 906 may generate and/or provide control information to the reception component 902 and/or the transmission component 904 to control reception and/or transmission of communications.
  • the communication manager 906 may switch to a first network from a second network.
  • the communication manager 906 may measure an RSRP of a first cell associated with the first network.
  • the communication manager 906 may switch from the first network to the second network as a result of a drop in the RSRP.
  • the communication manager 906 may compare the change in the RSRP to a predetermined value.
  • the communication manager 906 may determine whether a B event has been configured.
  • the communication manager 906 may measure the RSRP of a second cell, associated with the second network, as a result of determining that the B event has been configured.
  • the communication manager 906 may compare the RSRP of the first cell to a first EFS value.
  • the communication manager 906 may compare a difference between the RSRP of the second cell and the RSRP of the first cell to a second EFS value.
  • the communication manager 906 may trigger an automatic measurement prior to switching to the first network from the second network as a result of determining that the B event was not configured.
  • Fig. 9 The number and arrangement of components shown in Fig. 9 are provided as an example. In practice, there may be additional components, fewer components, different components, or differently arranged components than those shown in Fig. 9. Furthermore, two or more components shown in Fig. 9 may be implemented within a single component, or a single component shown in Fig. 9 may be implemented as multiple, distributed components. Additionally, or alternatively, a set of (one or more) components shown in Fig. 9 may perform one or more functions described as being performed by another set of components shown in Fig. 9.
  • Fig. 10 is a diagram of an example apparatus 1000 for wireless communication, in accordance with the present disclosure.
  • the apparatus 1000 may be a network node, or a network node may include the apparatus 1000.
  • the apparatus 1000 includes a reception component 1002, a transmission component 1004, and/or a communication manager 1006, which may be in communication with one another (for example, via one or more buses and/or one or more other components) .
  • the communication manager 1006 is the communication manager 150 described in connection with Fig. 1.
  • the apparatus 1000 may communicate with another apparatus 1008, such as a UE or a network node (such as a CU, a DU, an RU, or a base station) , using the reception component 1002 and the transmission component 1004.
  • another apparatus 1008 such as a UE or a network node (such as a CU, a DU, an RU, or a base station) , using the reception component 1002 and the transmission component 1004.
  • the apparatus 1000 may be configured to perform one or more operations described herein in connection with Figs. 4-6. Additionally, or alternatively, the apparatus 1000 may be configured to perform one or more processes described herein, such as process 800 of Fig. 8.
  • the apparatus 1000 and/or one or more components shown in Fig. 10 may include one or more components of the network node described in connection with Fig. 2. Additionally, or alternatively, one or more components shown in Fig. 10 may be implemented within one or more components described in connection with Fig. 2. Additionally, or alternatively, one or more components of the set of components 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 1002 may receive communications, such as reference signals, control information, data communications, or a combination thereof, from the apparatus 1008.
  • the reception component 1002 may provide received communications to one or more other components of the apparatus 1000.
  • the reception component 1002 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 of the apparatus 1000.
  • the reception component 1002 may include one or more antennas, a modem, a demodulator, a MIMO detector, a receive processor, a controller/processor, a memory, or a combination thereof, of the network node described in connection with Fig. 2.
  • the reception component 1002 and/or the transmission component 1004 may include or may be included in a network interface.
  • the network interface may be configured to obtain and/or output signals for the apparatus 1000 via one or more communications links, such as a backhaul link, a midhaul link, and/or a fronthaul link.
  • the transmission component 1004 may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the apparatus 1008.
  • one or more other components of the apparatus 1000 may generate communications and may provide the generated communications to the transmission component 1004 for transmission to the apparatus 1008.
  • the transmission component 1004 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 1008.
  • the transmission component 1004 may include one or more antennas, a modem, a modulator, a transmit MIMO processor, a transmit processor, a controller/processor, a memory, or a combination thereof, of the network node described in connection with Fig. 2. In some aspects, the transmission component 1004 may be co-located with the reception component 1002 in a transceiver.
  • the communication manager 1006 may support operations of the reception component 1002 and/or the transmission component 1004. For example, the communication manager 1006 may receive information associated with configuring reception of communications by the reception component 1002 and/or transmission of communications by the transmission component 1004. Additionally, or alternatively, the communication manager 1006 may generate and/or provide control information to the reception component 1002 and/or the transmission component 1004 to control reception and/or transmission of communications.
  • the communication manager 1006 may configure a UE to switch to a first network from a second network.
  • the communication manager 1006 may configure the UE to measure an RSRP of a first cell associated with the first network.
  • the communication manager 1006 may configure the UE to switch from the first network to the second network as a result of a drop in the RSRP.
  • the communication manager 1006 may configure the UE to compare the change in the RSRP to a predetermined value.
  • the communication manager 1006 may configure the UE to determine whether a B event has been configured.
  • the communication manager 1006 may configure the UE to measure the RSRP of a second cell, associated with the second network, as a result of determining that the B event has been configured.
  • the communication manager 1006 may configure the UE to compare the RSRP of the first cell to a first EFS value.
  • the communication manager 1006 may configure the UE to compare a difference between the RSRP of the second cell and the RSRP of the first cell to a second EFS value.
  • the communication manager 1006 may configure the UE to trigger, as a result of the UE determining that the B event was not configured, an automatic measurement prior to switching to the first network from the second network.
  • Fig. 10 The number and arrangement of components shown in Fig. 10 are provided as an example. In practice, there may be additional components, fewer components, different components, or differently arranged components than those shown in Fig. 10. Furthermore, two or more components shown in Fig. 10 may be implemented within a single component, or a single component shown in Fig. 10 may be implemented as multiple, distributed components. Additionally, or alternatively, a set of (one or more) components shown in Fig. 10 may perform one or more functions described as being performed by another set of components shown in Fig. 10.
  • a method of wireless communication performed by a UE comprising: switching to a first network from a second network; measuring an RSRP of a first cell associated with the first network; and switching from the first network to the second network as a result of a drop in the RSRP.
  • Aspect 2 The method of Aspect 1, wherein measuring the RSRP of the first cell associated with the first network includes measuring a change in the RSRP over a predetermined period of time.
  • Aspect 3 The method of Aspect 2, further comprising comparing the change in the RSRP to a predetermined value.
  • Aspect 4 The method of Aspect 3, wherein switching from the first network to the second network as a result of the drop in the RSRP occurs as a result of the change in the RSRP over the predetermined period of time exceeding the predetermined value.
  • Aspect 5 The method of any of Aspects 1-4, further comprising determining whether a B event has been configured.
  • Aspect 6 The method of Aspect 5, further comprising measuring the RSRP of a second cell, associated with the second network, as a result of determining that the B event has been configured.
  • Aspect 7 The method of Aspect 6, further comprising comparing the RSRP of the first cell to a first EFS value.
  • Aspect 8 The method of Aspect 7, further comprising comparing a difference between the RSRP of the second cell and the RSRP of the first cell to a second EFS value.
  • Aspect 9 The method of Aspect 8, wherein switching from the first network to the second network occurs as a result of the RSRP of the first cell being less than or equal to the first EFS value and the difference of the RSRP of the second cell and the RSRP of the first cell being greater than or equal to the second EFS value.
  • Aspect 10 The method of Aspect 6, wherein measuring the RSRP of the second cell is based, at least in part, on a TTT value.
  • Aspect 11 The method of Aspect 10, wherein the TTT value is based, at least in part, on an evaluation timer of the B event and an early failure signaling value.
  • Aspect 12 The method of Aspect 5, further comprising triggering an automatic measurement prior to switching to the first network from the second network as a result of determining that the B event was not configured.
  • Aspect 13 The method of Aspect 12, wherein triggering the automatic measurement includes applying an automatic gap between measurements of at least two target frequencies.
  • Aspect 14 The method of Aspect 13, wherein one or more of the at least two target frequencies are based, at least on part, on previously camped frequencies associated with the second network.
  • Aspect 16 The method of Aspect 15, wherein switching from the first network to the second network includes releasing resources associated with the first network and camping on a second cell associated with the target RSRP and the second network.
  • a method of wireless communication performed by a network node comprising: configuring a UE to switch to a first network from a second network; configuring the UE to measure an RSRP of a first cell associated with the first network; and configuring the UE to switch from the first network to the second network as a result of a drop in the RSRP.
  • Aspect 18 The method of Aspect 17, wherein configuring the UE to measure the RSRP of the first cell associated with the first network includes configuring the UE to measure a change in the RSRP over a predetermined period of time.
  • Aspect 19 The method of Aspect 18, further comprising configuring the UE to compare the change in the RSRP to a predetermined value.
  • Aspect 20 The method of Aspect 19, wherein configuring the UE to switch from the first network to the second network as a result of the drop in the RSRP occurs as a result of the change in the RSRP over the predetermined period of time exceeding the predetermined value.
  • Aspect 21 The method of any of Aspects 17-20, further comprising configuring the UE to determine whether a B event has been configured.
  • Aspect 22 The method of Aspect 21, further comprising configuring the UE to measure the RSRP of a second cell, associated with the second network, as a result of determining that the B event has been configured.
  • Aspect 23 The method of Aspect 22, further comprising configuring the UE to compare the RSRP of the first cell to a first EFS value.
  • Aspect 24 The method of Aspect 23, further comprising configuring the UE to compare a difference between the RSRP of the second cell and the RSRP of the first cell to a second EFS value.
  • Aspect 25 The method of Aspect 24, wherein configuring the UE to switch from the first network to the second network includes configuring the UE to switch from the first network to the second network as a result of the UE determining that the RSRP of the first cell is less than or equal to the first EFS value and the difference of the RSRP of the second cell and the RSRP of the first cell is greater than or equal to the second EFS value.
  • Aspect 26 The method of Aspect 22, wherein configuring the UE to measure the RSRP of the second cell includes configuring the UE to measure the RSRP of the second cell based, at least in part, on a TTT value.
  • Aspect 27 The method of Aspect 26, wherein the TTT value is based, at least in part, on an evaluation timer of the B event and an early failure signaling value.
  • Aspect 28 The method of Aspect 21, further comprising configuring the UE to trigger, as a result of the UE determining that the B event was not configured, an automatic measurement prior to switching to the first network from the second network.
  • Aspect 29 The method of Aspect 28, wherein configuring the UE to trigger the automatic measurement includes configuring the UE to apply an automatic gap between measurements of at least two target frequencies.
  • Aspect 30 The method of Aspect 29, wherein one or more of the at least two target frequencies are based, at least in part, on previously camped frequencies associated with the first network.
  • Aspect 31 The method of Aspect 29, wherein configuring the UE to switch from the first network to the second network includes configuring the UE to switch from the first network to the second network as a result of a target RSRP associated with the second network being equal to or greater than an EFS value.
  • Aspect 32 The method of Aspect 31, wherein configuring the UE to switch from the first network to the second network includes configuring the UE to release resources associated with the first network and camping on a second cell associated with the target RSRP and the second network.
  • Aspect 33 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 of Aspects 1-32.
  • Aspect 34 A device for wireless communication, comprising a memory and one or more processors coupled to the memory, the one or more processors configured to perform the method of one or more of Aspects 1-32.
  • Aspect 35 An apparatus for wireless communication, comprising at least one means for performing the method of one or more of Aspects 1-32.
  • Aspect 36 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 of Aspects 1-32.
  • Aspect 37 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 of Aspects 1-32.
  • the term “component” is intended to be broadly construed as hardware and/or a combination of hardware and software.
  • “Software” shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, and/or functions, among other examples, whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.
  • a “processor” is implemented in hardware and/or a combination of hardware and software. It will be apparent that systems and/or methods described herein may be implemented in different forms of hardware and/or a combination of hardware and software.
  • 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, not equal to the threshold, or the like.
  • “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 (e.g., 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, ” or the like are intended to be open-ended terms that do not limit an element that they modify (e.g., an element “having” A may also have B) .
  • the phrase “based on” is intended to mean “based, at least in part, on” unless explicitly stated otherwise.
  • 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 (e.g., if used in combination with “either” or “only one of” ) .

Landscapes

  • 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 en général sur le domaine des communications sans fil. Selon certains aspects, un équipement utilisateur (UE) peut commuter vers un premier réseau à partir d'un second réseau. L'UE peut mesurer une puissance reçue de signal de référence (RSRP) d'une première cellule associée au premier réseau. L'UE peut commuter du premier réseau au second réseau à la suite d'une chute de la RSRP. La divulgation concerne en outre de nombreux autres aspects.
PCT/CN2023/085473 2023-03-31 2023-03-31 Commutation de réseau reposant sur une détection de chute de puissance reçue de signal de référence Pending WO2024197813A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2023/085473 WO2024197813A1 (fr) 2023-03-31 2023-03-31 Commutation de réseau reposant sur une détection de chute de puissance reçue de signal de référence

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2023/085473 WO2024197813A1 (fr) 2023-03-31 2023-03-31 Commutation de réseau reposant sur une détection de chute de puissance reçue de signal de référence

Publications (1)

Publication Number Publication Date
WO2024197813A1 true WO2024197813A1 (fr) 2024-10-03

Family

ID=92907359

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/085473 Pending WO2024197813A1 (fr) 2023-03-31 2023-03-31 Commutation de réseau reposant sur une détection de chute de puissance reçue de signal de référence

Country Status (1)

Country Link
WO (1) WO2024197813A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111328089A (zh) * 2018-12-17 2020-06-23 西安中兴新软件有限责任公司 通信业务的传输方法、装置、存储介质及电子装置
US20200275337A1 (en) * 2017-11-14 2020-08-27 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Network switching method, network device, and terminal device
CN115209501A (zh) * 2022-05-26 2022-10-18 卡斯柯信号有限公司 一种基于5g和lte-v2x的自动切换方法及装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200275337A1 (en) * 2017-11-14 2020-08-27 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Network switching method, network device, and terminal device
CN111328089A (zh) * 2018-12-17 2020-06-23 西安中兴新软件有限责任公司 通信业务的传输方法、装置、存储介质及电子装置
CN115209501A (zh) * 2022-05-26 2022-10-18 卡斯柯信号有限公司 一种基于5g和lte-v2x的自动切换方法及装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
OPPO, CATR, CHINA TELECOM, CHINA UNICOM: "Discussion for returning back to NR in case of handover for voice", 3GPP DRAFT; S2-176976 RETURNING BACK TO NR IN CASE OF HANDOVER FOR VOICE -DP, vol. SA WG2, 22 October 2017 (2017-10-22), Ljubljana, Slovenia, XP051346932 *

Similar Documents

Publication Publication Date Title
EP4480254A1 (fr) Techniques de détection de défaillance de faisceau prédictif de plage inter-frequences
WO2024148531A1 (fr) Temps de traitement d'informations d'état de canal pour des mesures entre fréquences associées à des cellules candidates
WO2024197813A1 (fr) Commutation de réseau reposant sur une détection de chute de puissance reçue de signal de référence
WO2024207140A1 (fr) Configuration de réponse d'accès aléatoire pour mobilité déclenchée par couche inférieure
WO2024207133A1 (fr) Retransmission de canal physique d'accès aléatoire
US20240284270A1 (en) Report configuration for serving cell and candidate cell
WO2024082258A1 (fr) Indication de signal de référence de perte de trajet
US12369022B2 (en) Network assistant information for user equipment troubleshooting
US20230371018A1 (en) Multiple user subscriber identity module gap pattern modification
US20240284281A1 (en) Measurement and reporting for serving and candidate cells
WO2025010532A1 (fr) Gestion d'avance temporelle et priorisation de puissance de transmission de liaison montante pour des cellules candidates
US20240137789A1 (en) Applying weighted averaging to measurements associated with reference signals
WO2024207408A1 (fr) Rapport de propriétés de canal dans domaine temporel (tdcp)
US20230388825A1 (en) Repeater measurement gap configuration
WO2025073105A1 (fr) Configuration d'occasion de transmission inutilisée
US20240204972A1 (en) Indicating transmission configuration indicator state based on aperiodic channel state information reference signal
US12349086B2 (en) Physical broadcast channel and synchronization signal block signaling
US12088396B2 (en) Measurement reporting with delta values
WO2024138640A1 (fr) Commande de commutation de cellule pour indication d'état d'indicateur de configuration de transmission
US12389313B2 (en) Measurements of linear combinations of beams
WO2025091204A1 (fr) Mesures de mobilités déclenchées par une couche 1 et une couche 2
US20250125923A1 (en) User equipment and network node coordination
WO2024011339A1 (fr) Transmissions simultanées de canal de commande de liaison montante physique
WO2024212207A1 (fr) Opérations de mesure de couche 1 basée sur couche 3 pour mobilité déclenchée par couche inférieure
WO2024239191A1 (fr) Commande de puissance pour transmissions en liaison montante

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23929398

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE