WO2023010271A1 - Préférence de connectivité de réseau d'équipement utilisateur - Google Patents

Préférence de connectivité de réseau d'équipement utilisateur Download PDF

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Publication number
WO2023010271A1
WO2023010271A1 PCT/CN2021/110241 CN2021110241W WO2023010271A1 WO 2023010271 A1 WO2023010271 A1 WO 2023010271A1 CN 2021110241 W CN2021110241 W CN 2021110241W WO 2023010271 A1 WO2023010271 A1 WO 2023010271A1
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WIPO (PCT)
Prior art keywords
user equipment
network connectivity
preference
message
radio access
Prior art date
Application number
PCT/CN2021/110241
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English (en)
Inventor
Jinglin Zhang
Haojun WANG
Yi Liu
Original Assignee
Qualcomm Incorporated
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Filing date
Publication date
Application filed by Qualcomm Incorporated filed Critical Qualcomm Incorporated
Priority to PCT/CN2021/110241 priority Critical patent/WO2023010271A1/fr
Publication of WO2023010271A1 publication Critical patent/WO2023010271A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink
    • H04W36/00698—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink using different RATs
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0251—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity
    • H04W52/0254—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity detecting a user operation or a tactile contact or a motion of the device
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H04W52/0274—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof
    • H04W52/028—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof switching on or off only a part of the equipment circuit blocks

Definitions

  • the technology discussed below relates generally to wireless communication and, more particularly, to signaling a user equipment network connectivity preference and configuring the user equipment based on the network connectivity preference.
  • Next-generation wireless communication systems may include a 5G core network and a 5G radio access network (RAN) , such as a New Radio (NR) -RAN.
  • the NR-RAN supports communication via one or more cells.
  • a wireless communication device such as a user equipment (UE) may access a first cell of a first base station (BS) such as a gNB and/or access a second cell of a second BS.
  • BS base station
  • gNB gNode B
  • a BS may schedule access to a cell to support access by multiple UEs. For example, a BS may allocate different resources (e.g., time domain and frequency domain resources) for different UEs operating within a cell of the BS. In addition, in a scenario where a UE supports multiple radio frequency (RF) carriers, the BS may schedule the UE on one or more RF carriers.
  • RF radio frequency
  • a method for wireless communication at a user equipment may include transmitting a first message to a base station.
  • the first message may include an indication of a first network connectivity preference of the user equipment.
  • the indication of the first network connectivity preference may specify at least one of a standalone mode of network connectivity, a non-standalone mode of network connectivity, a radio access technology, a radio frequency band, or a combination thereof.
  • the method may also include receiving a second message from the base station. The second message may configure a first connection for the user equipment according to the first network connectivity preference.
  • a user equipment may include a transceiver, a memory, and a processor coupled to the transceiver and the memory.
  • the processor and the memory may be configured to transmit a first message to a base station via the transceiver.
  • the first message may include an indication of a first network connectivity preference of the user equipment.
  • the indication of the first network connectivity preference may specify at least one of a standalone mode of network connectivity, a non-standalone mode of network connectivity, a radio access technology, a radio frequency band, or a combination thereof.
  • the processor and the memory may also be configured to receive a second message from the base station via the transceiver. The second message may configure a first connection for the user equipment according to the first network connectivity preference.
  • a user equipment may include means for transmitting a first message to a base station.
  • the first message may include an indication of a first network connectivity preference of the user equipment.
  • the indication of the first network connectivity preference may specify at least one of a standalone mode of network connectivity, a non-standalone mode of network connectivity, a radio access technology, a radio frequency band, or a combination thereof.
  • the user equipment may also include means for receiving a second message from the base station. The second message may configure a first connection for the user equipment according to the first network connectivity preference.
  • an article of manufacture for use by a user equipment includes a non-transitory computer-readable medium having stored therein instructions executable by one or more processors of the user equipment to transmit a first message to a base station.
  • the first message may include an indication of a first network connectivity preference of the user equipment.
  • the indication of the first network connectivity preference may specify at least one of a standalone mode of network connectivity, a non-standalone mode of network connectivity, a radio access technology, a radio frequency band, or a combination thereof.
  • the computer-readable medium may also have stored therein instructions executable by one or more processors of the user equipment to receive a second message from the base station. The second message may configure a first connection for the user equipment according to the first network connectivity preference.
  • a method for wireless communication at a base station may include receiving a first message from a user equipment.
  • the first message may include an indication of a first network connectivity preference of the user equipment.
  • the indication of the first network connectivity preference may specify at least one of a standalone mode of network connectivity, a non-standalone mode of network connectivity, a radio access technology, a radio frequency band, or a combination thereof.
  • the method may also include transmitting a second message to the user equipment.
  • the second message may configure a first connection for the user equipment according to the first network connectivity preference.
  • a base station may include a transceiver, a memory, and a processor coupled to the transceiver and the memory.
  • the processor and the memory may be configured to receive a first message from a user equipment via the transceiver.
  • the first message may include an indication of a first network connectivity preference of the user equipment.
  • the indication of the first network connectivity preference may specify at least one of a standalone mode of network connectivity, a non-standalone mode of network connectivity, a radio access technology, a radio frequency band, or a combination thereof.
  • the processor and the memory may also be configured to transmit a second message to the user equipment via the transceiver. The second message may configure a first connection for the user equipment according to the first network connectivity preference.
  • a base station may include means for receiving a first message from a user equipment.
  • the first message may include an indication of a first network connectivity preference of the user equipment.
  • the indication of the first network connectivity preference may specify at least one of a standalone mode of network connectivity, a non-standalone mode of network connectivity, a radio access technology, a radio frequency band, or a combination thereof.
  • the user equipment may also include means for transmitting a second message to the user equipment. The second message may configure a first connection for the user equipment according to the first network connectivity preference.
  • an article of manufacture for use by a base station includes a non-transitory computer-readable medium having stored therein instructions executable by one or more processors of the base station to receive a first message from a user equipment.
  • the first message may include an indication of a first network connectivity preference of the user equipment.
  • the indication of the first network connectivity preference may specify at least one of a standalone mode of network connectivity, a non-standalone mode of network connectivity, a radio access technology, a radio frequency band, or a combination thereof.
  • the computer-readable medium may also have stored therein instructions executable by one or more processors of the user equipment to transmit a second message to the user equipment. The second message may configure a first connection for the user equipment according to the first network connectivity preference.
  • FIG. 1 is a schematic illustration of a wireless communication system according to some aspects.
  • FIG. 2 is a conceptual illustration of an example of a radio access network according to some aspects.
  • FIG. 3 is a schematic diagram illustrating organization of wireless resources in an air interface utilizing orthogonal frequency divisional multiplexing (OFDM) according to some aspects.
  • OFDM orthogonal frequency divisional multiplexing
  • FIG. 4 is a conceptual illustration of a multi-cell transmission environment according to some aspects.
  • FIG. 5 is a block diagram illustrating an example of an EN-DC system according to some aspects.
  • FIG. 6 is a signaling diagram illustrating an example of communicating capability information according to some aspects.
  • FIG. 7 is a block diagram illustrating an example of a 5G wireless communication system (5GS) according to some aspects.
  • FIG. 8 is a signaling diagram illustrating a first example of signaling associated with user equipment preferences according to some aspects.
  • FIG. 9 is a signaling diagram illustrating a second example of signaling associated with user equipment preferences according to some aspects.
  • FIG. 10 is a signaling diagram illustrating a third example of signaling associated with user equipment preferences according to some aspects.
  • FIG. 11 is a block diagram conceptually illustrating an example of a hardware implementation for a user equipment employing a processing system according to some aspects.
  • FIG. 12 is a flow chart illustrating an example of signaling the network connectivity preference of a user equipment according to some aspects.
  • FIG. 13 is a flow chart illustrating a first example of specifying a user equipment network connectivity preference according to some aspects.
  • FIG. 14 is a flow chart illustrating a second example of specifying a user equipment network connectivity preference according to some aspects.
  • FIG. 15 is a flow chart illustrating a third example of specifying a user equipment network connectivity preference according to some aspects.
  • FIG. 16 is a flow chart illustrating a fourth example of specifying a user equipment network connectivity preference according to some aspects.
  • FIG. 17 is a block diagram conceptually illustrating an example of a hardware implementation for a base station employing a processing system according to some aspects.
  • FIG. 18 is a flow chart illustrating an example of configuring a connection for a user equipment based on the network connectivity preference of the user equipment according to some aspects.
  • aspects and examples are described in this application by illustration to some examples, those skilled in the art will understand that additional implementations and use cases may come about in many different arrangements and scenarios. Innovations described herein may be implemented across many differing platform types, devices, systems, shapes, sizes, and packaging arrangements. For example, aspects and/or uses may come about via integrated chip examples and other non-module-component based devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail/purchasing devices, medical devices, artificial intelligence-enabled (AI-enabled) devices, etc. ) . While some examples may or may not be specifically directed to use cases or applications, a wide assortment of applicability of described innovations may occur.
  • non-module-component based devices e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail/purchasing devices, medical devices, artificial intelligence-enabled (AI-enabled) devices, etc.
  • AI-enabled artificial intelligence-enabled
  • Implementations may range a spectrum from chip-level or modular components to non-modular, non-chip-level implementations and further to aggregate, distributed, or original equipment manufacturer (OEM) devices or systems incorporating one or more aspects of the described innovations.
  • devices incorporating described aspects and features may also necessarily include additional components and features for implementation and practice of claimed and described examples.
  • transmission and reception of wireless signals necessarily includes a number of components for analog and digital purposes (e.g., hardware components including antenna, radio frequency (RF) chains, power amplifiers, modulators, buffer, processor (s) , interleaver, adders/summers, etc. ) .
  • RF radio frequency
  • s modulators
  • interleaver adders/summers
  • a user equipment may prefer a certain type of network connectivity.
  • network connectivity may relate to the number of cells to which the UE is connected. For example, a UE may prefer to operate in a standalone (SA) mode of operation in some situations and/or prefer to operate in a non-standalone (NSA) mode of operation in other situations.
  • network connectivity may relate to the type of radio access technology (RAT) or the types of radio access technologies (RATs) to which the UE is connected.
  • RAT radio access technology
  • a UE may prefer to connect to a 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) RAT in some situations and/or prefer to connect to a 3GPP New Radio (NR) RAT in other situations.
  • 3GPP 3rd Generation Partnership Project
  • LTE Long Term Evolution
  • NR 3GPP New Radio
  • a UE may signal a network connectivity preference to a base station. For example, the UE may transmit a message that indicates that the UE currently prefers to operate in an SA mode (e.g., to conserve battery power) or that indicates that the UE currently prefers to operate in an NSA mode (e.g., to improve communication reliability and/or throughput) . As another example, the UE may transmit a message that indicates that the UE currently prefers to connect to an LTE RAT (e.g., to conserve battery power or to avoid an NR cell where the UE has experienced connectivity issues) or that indicates that the UE currently prefers to connect to an NR RAT (e.g., to improve communication throughput) . As yet another example, the UE may transmit a message that indicates one or more radio frequency bands that have been blacklisted by the UE (e.g., due to connectivity issues the UE has experienced on the one or more radio frequency bands) .
  • SA mode e.g., to conserve battery power
  • an NSA mode e
  • the message sent by the UE may take different forms in different examples.
  • the message is a UE Assistance Information (UAI) message.
  • the message is an uplink (UL) Information Transfer Multi-RAT -Dual Connectivity (MR-DC) message.
  • the message is a UL Information Transfer Inter-RAT (IRAT) message.
  • UAI UE Assistance Information
  • MR-DC uplink
  • IRAT UL Information Transfer Inter-RAT
  • Other types of messages may be used in other examples.
  • a base station may configure the UE with the preferred network connectivity. For example, the base station may send a Radio Resource Control (RRC) Configuration message to the UE to establish the appropriate network connection with the UE.
  • RRC Radio Resource Control
  • the various concepts presented throughout this disclosure may be implemented across a broad variety of telecommunication systems, network architectures, and communication standards.
  • the wireless communication system 100 includes three interacting domains: a core network 102, a radio access network (RAN) 104, and a user equipment (UE) 106.
  • the UE 106 may be enabled to carry out data communication with an external data network 110, such as (but not limited to) the Internet.
  • the RAN 104 may implement any suitable wireless communication technology or technologies to provide radio access to the UE 106.
  • the RAN 104 may operate according to 3 rd Generation Partnership Project (3GPP) New Radio (NR) specifications, often referred to as 5G.
  • 3GPP 3 rd Generation Partnership Project
  • NR New Radio
  • the RAN 104 may operate under a hybrid of 5G NR and Evolved Universal Terrestrial Radio Access Network (eUTRAN) standards, often referred to as Long Term Evolution (LTE) .
  • eUTRAN Evolved Universal Terrestrial Radio Access Network
  • LTE Long Term Evolution
  • the 3GPP refers to this hybrid RAN as a next-generation RAN, or NG-RAN.
  • NG-RAN next-generation RAN
  • many other examples may be utilized within the scope of the present disclosure.
  • a base station is a network element in a radio access network responsible for radio transmission and reception in one or more cells to or from a UE.
  • a base station may variously be referred to by those skilled in the art as a base transceiver station (BTS) , a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS) , an extended service set (ESS) , an access point (AP) , a Node B (NB) , an eNode B (eNB) , a gNode B (gNB) , a transmission and reception point (TRP) , or some other suitable terminology.
  • BTS base transceiver station
  • a radio base station a radio base station
  • ESS extended service set
  • AP access point
  • NB Node B
  • eNB eNode B
  • gNB gNode B
  • TRP transmission and reception point
  • a base station may include two or more TRPs that may be collocated or non-collocated. Each TRP may communicate on the same or different carrier frequency within the same or different frequency band.
  • the RAN 104 operates according to both the LTE and 5G NR standards, one of the base stations may be an LTE base station, while another base station may be a 5G NR base station.
  • the RAN 104 is further illustrated supporting wireless communication for multiple mobile apparatuses.
  • a mobile apparatus may be referred to as user equipment (UE) in 3GPP standards, but may also be referred to by those skilled in the art as a mobile station (MS) , a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communications device, a remote device, a mobile subscriber station, an access terminal (AT) , a mobile terminal, a wireless terminal, a remote terminal, a handset, a terminal, a user agent, a mobile client, a client, or some other suitable terminology.
  • a UE may be an apparatus (e.g., a mobile apparatus) that provides a user with access to network services.
  • a “mobile” apparatus need not necessarily have a capability to move and may be stationary.
  • the term mobile apparatus or mobile device broadly refers to a diverse array of devices and technologies.
  • UEs may include a number of hardware structural components sized, shaped, and arranged to help in communication; such components can include antennas, antenna arrays, RF chains, amplifiers, one or more processors, etc. electrically coupled to each other.
  • a mobile apparatus examples include a mobile, a cellular (cell) phone, a smart phone, a session initiation protocol (SIP) phone, a laptop, a personal computer (PC) , a notebook, a netbook, a smartbook, a tablet, a personal digital assistant (PDA) , and a broad array of embedded systems, e.g., corresponding to an “Internet of things” (IoT) .
  • IoT Internet of things
  • a mobile apparatus may additionally be an automotive or other transportation vehicle, a remote sensor or actuator, a robot or robotics device, a satellite radio, a global positioning system (GPS) device, an object tracking device, a drone, a multi-copter, a quad-copter, a remote control device, a consumer and/or wearable device, such as eyewear, a wearable camera, a virtual reality device, a smart watch, a health or fitness tracker, a digital audio player (e.g., MP3 player) , a camera, a game console, etc.
  • GPS global positioning system
  • a mobile apparatus may additionally be a digital home or smart home device such as a home audio, video, and/or multimedia device, an appliance, a vending machine, intelligent lighting, a home security system, a smart meter, etc.
  • a mobile apparatus may additionally be a smart energy device, a security device, a solar panel or solar array, a municipal infrastructure device controlling electric power (e.g., a smart grid) , lighting, water, etc., an industrial automation and enterprise device, a logistics controller, and/or agricultural equipment, etc.
  • a mobile apparatus may provide for connected medicine or telemedicine support, e.g., health care at a distance.
  • Telehealth devices may include telehealth monitoring devices and telehealth administration devices, whose communication may be given preferential treatment or prioritized access over other types of information, e.g., in terms of prioritized access for transport of critical service data, and/or relevant QoS for transport of critical service data.
  • Wireless communication between the RAN 104 and the UE 106 may be described as utilizing an air interface.
  • Transmissions over the air interface from a base station (e.g., base station 108) to one or more UEs (e.g., similar to UE 106) may be referred to as downlink (DL) transmission.
  • the term downlink may refer to a point-to-multipoint transmission originating at a base station (e.g., base station 108) . Another way to describe this scheme may be to use the term broadcast channel multiplexing.
  • Transmissions from a UE (e.g., UE 106) to a base station (e.g., base station 108) may be referred to as uplink (UL) transmissions.
  • the term uplink may refer to a point-to-point transmission originating at a UE (e.g., UE 106) .
  • a scheduling entity e.g., a base station 108 allocates resources for communication among some or all devices and equipment within its service area or cell.
  • the scheduling entity may be responsible for scheduling, assigning, reconfiguring, and releasing resources for one or more scheduled entities (e.g., UEs 106) . That is, for scheduled communication, a plurality of UEs 106, which may be scheduled entities, may utilize resources allocated by the scheduling entity 108.
  • Base stations 108 are not the only entities that may function as scheduling entities. That is, in some examples, a UE may function as a scheduling entity, scheduling resources for one or more scheduled entities (e.g., one or more other UEs) . For example, UEs may communicate directly with other UEs in a peer-to-peer or device-to-device fashion and/or in a relay configuration.
  • a scheduling entity 108 may broadcast downlink traffic 112 to one or more scheduled entities (e.g., one or more UEs 106) .
  • the scheduling entity 108 is a node or device responsible for scheduling traffic in a wireless communication network, including the downlink traffic 112 and, in some examples, uplink traffic 116 from one or more scheduled entities (e.g., one or more UEs 106) to the scheduling entity 108.
  • the scheduled entity (e.g., a UE 106) is a node or device that receives downlink control information 114, including but not limited to scheduling information (e.g., a grant) , synchronization or timing information, or other control information from another entity in the wireless communication network such as the scheduling entity 108.
  • the scheduled entity 106 may further transmit uplink control information 118, including but not limited to a scheduling request or feedback information, or other control information to the scheduling entity 108.
  • the uplink and/or downlink control information 114 and/or 118 and/or traffic 112 and/or 116 information may be transmitted on a waveform that may be time-divided into frames, subframes, slots, and/or symbols.
  • a symbol may refer to a unit of time that, in an orthogonal frequency division multiplexed (OFDM) waveform, carries one resource element (RE) per sub-carrier.
  • a slot may carry 7 or 14 OFDM symbols.
  • a subframe may refer to a duration of 1 ms. Multiple subframes or slots may be grouped together to form a single frame or radio frame.
  • a frame may refer to a predetermined duration (e.g., 10 ms) for wireless transmissions, with each frame consisting of, for example, 10 subframes of 1 ms each.
  • a predetermined duration e.g. 10 ms
  • each frame consisting of, for example, 10 subframes of 1 ms each.
  • these definitions are not required, and any suitable scheme for organizing waveforms may be utilized, and various time divisions of the waveform may have any suitable duration.
  • base stations 108 may include a backhaul interface for communication with a backhaul portion 120 of the wireless communication system 100.
  • the backhaul portion 120 may provide a link between a base station 108 and the core network 102.
  • a backhaul network may provide interconnection between the respective base stations 108.
  • Various types of backhaul interfaces may be employed, such as a direct physical connection, a virtual network, or the like using any suitable transport network.
  • the core network 102 may be a part of the wireless communication system 100 and may be independent of the radio access technology used in the RAN 104.
  • the core network 102 may be configured according to 5G standards (e.g., 5GC) .
  • the core network 102 may be configured according to a 4G evolved packet core (EPC) , or any other suitable standard or configuration.
  • 5G standards e.g., 5GC
  • EPC 4G evolved packet core
  • FIG. 2 a schematic illustration of a radio access network (RAN) 200 according to some aspects of the present disclosure is provided.
  • the RAN 200 may be the same as the RAN 104 described above and illustrated in FIG. 1.
  • the geographic region covered by the RAN 200 may be divided into a number of cellular regions (cells) that can be uniquely identified by a user equipment (UE) based on an identification broadcasted over a geographical area from one access point or base station.
  • FIG. 2 illustrates cells 202, 204, 206, and 208, each of which may include one or more sectors (not shown) .
  • a sector is a sub-area of a cell. All sectors within one cell are served by the same base station.
  • a radio link within a sector can be identified by a single logical identification belonging to that sector.
  • the multiple sectors within a cell can be formed by groups of antennas with each antenna responsible for communication with UEs in a portion of the cell.
  • FIG. 2 two base stations, base station 210 and base station 212 are shown in cells 202 and 204.
  • a third base station, base station 214 is shown controlling a remote radio head (RRH) 216 in cell 206. That is, a base station can have an integrated antenna or can be connected to an antenna or RRH 216 by feeder cables.
  • RRH remote radio head
  • cells 202, 204, and 206 may be referred to as macrocells, as the base stations 210, 212, and 214 support cells having a large size.
  • a base station 218 is shown in the cell 208, which may overlap with one or more macrocells.
  • the cell 208 may be referred to as a small cell (e.g., a microcell, picocell, femtocell, home base station, home Node B, home eNode B, etc. ) , as the base station 218 supports a cell having a relatively small size.
  • Cell sizing can be done according to system design as well as component constraints.
  • the RAN 200 may include any number of wireless base stations and cells. Further, a relay node may be deployed to extend the size or coverage area of a given cell.
  • the base stations 210, 212, 214, 218 provide wireless access points to a core network for any number of mobile apparatuses. In some examples, the base stations 210, 212, 214, and/or 218 may be the same as or similar to the scheduling entity 108 described above and illustrated in FIG. 1.
  • FIG. 2 further includes an unmanned aerial vehicle (UAV) 220, which may be a drone or quadcopter.
  • UAV unmanned aerial vehicle
  • the UAV 220 may be configured to function as a base station, or more specifically as a mobile base station. That is, in some examples, a cell may not necessarily be stationary, and the geographic area of the cell may move according to the location of a mobile base station, such as the UAV 220.
  • the cells may include UEs that may be in communication with one or more sectors of each cell.
  • each base station 210, 212, 214, 218, and the UAV 220 may be configured to provide an access point to a core network 102 (see FIG. 1) for all the UEs in the respective cells.
  • UEs 222 and 224 may be in communication with base station 210;
  • UEs 226 and 228 may be in communication with base station 212;
  • UEs 230 and 232 may be in communication with base station 214 by way of RRH 216;
  • UE 234 may be in communication with base station 218; and
  • UE 236 may be in communication with a mobile base station, such as the UAV 220.
  • the UEs 222, 224, 226, 228, 230, 232, 234, 236, 238, 240, and/or 242 may be the same as or similar to the UE/scheduled entity 106 described above and illustrated in FIG. 1.
  • the UAV 220 e.g., the quadcopter
  • the UAV 220 can be a mobile network node and may be configured to function as a UE.
  • the UAV 220 may operate within cell 202 by communicating with base station 210.
  • sidelink signals may be used between UEs without necessarily relying on scheduling or control information from a base station.
  • Sidelink communication may be utilized, for example, in a device-to-device (D2D) network, peer-to-peer (P2P) network, vehicle-to-vehicle (V2V) network, vehicle-to-everything (V2X) network, and/or other suitable sidelink network.
  • D2D device-to-device
  • P2P peer-to-peer
  • V2V vehicle-to-vehicle
  • V2X vehicle-to-everything
  • the UEs 238, 240, and 242 may each function as a scheduling entity or transmitting sidelink device and/or a scheduled entity or a receiving sidelink device to schedule resources and communicate sidelink signals 237 therebetween without relying on scheduling or control information from a base station.
  • two or more UEs e.g., UEs 226 and 228, within the coverage area of a base station (e.g., base station 212) may also communicate sidelink signals 227 over a direct link (sidelink) without conveying that communication through the base station 212.
  • the base station 212 may allocate resources to the UEs 226 and 228 for the sidelink communication.
  • the ability of UEs to communicate while moving, independent of their location is referred to as mobility.
  • the various physical channels between the UE and the RAN 200 are generally set up, maintained, and released under the control of an access and mobility management function (AMF) .
  • AMF access and mobility management function
  • the AMF may include a security context management function (SCMF) and a security anchor function (SEAF) that performs authentication.
  • SCMF security context management function
  • SEAF security anchor function
  • the SCMF can manage, in whole or in part, the security context for both the control plane and the user plane functionality.
  • the RAN 200 may utilize DL-based mobility or UL-based mobility to enable mobility and handovers (i.e., the transfer of a UE’s connection from one radio channel to another) .
  • a UE may monitor various parameters of the signal from its serving cell as well as various parameters of neighboring cells. Depending on the quality of these parameters, the UE may maintain communication with one or more of the neighboring cells.
  • the UE may undertake a handoff or handover from the serving cell to the neighboring (target) cell.
  • the UE 224 may move from the geographic area corresponding to its serving cell 202 to the geographic area corresponding to a neighbor cell 206.
  • the UE 224 may transmit a reporting message to its serving base station 210 indicating this condition.
  • the UE 224 may receive a handover command, and the UE may undergo a handover to the cell 206.
  • UL reference signals from each UE may be utilized by the network to select a serving cell for each UE.
  • the base stations 210, 212, and 214/216 may broadcast unified synchronization signals (e.g., unified Primary Synchronization Signals (PSSs) , unified Secondary Synchronization Signals (SSSs) and unified Physical Broadcast Channels (PBCHs) ) .
  • PSSs Primary Synchronization Signals
  • SSSs unified Secondary Synchronization Signals
  • PBCHs Physical Broadcast Channels
  • the UEs 222, 224, 226, 228, 230, and 232 may receive the unified synchronization signals, derive the carrier frequency, and slot timing from the synchronization signals, and in response to deriving timing, transmit an uplink pilot or reference signal.
  • the uplink pilot signal transmitted by a UE may be concurrently received by two or more cells (e.g., base stations 210 and 214/216) within the RAN 200.
  • Each of the cells may measure a strength of the pilot signal, and the radio access network (e.g., one or more of the base stations 210 and 214/216 and/or a central node within the core network) may determine a serving cell for the UE 224.
  • the radio access network e.g., one or more of the base stations 210 and 214/216 and/or a central node within the core network
  • the RAN 200 may continue to monitor the uplink pilot signal transmitted by the UE 224.
  • the RAN 200 may handover the UE 224 from the serving cell to the neighboring cell, with or without informing the UE 224.
  • the synchronization signal transmitted by the base stations 210, 212, and 214/216 may be unified, the synchronization signal may not identify a particular cell, but rather may identify a zone of multiple cells operating on the same frequency and/or with the same timing.
  • the use of zones in 5G networks or other next generation communication networks enables the uplink-based mobility framework and improves the efficiency of both the UE and the network, since the number of mobility messages that need to be exchanged between the UE and the network may be reduced.
  • the air interface in the radio access network 200 may utilize licensed spectrum, unlicensed spectrum, or shared spectrum.
  • Licensed spectrum provides for exclusive use of a portion of the spectrum, generally by virtue of a mobile network operator purchasing a license from a government regulatory body.
  • Unlicensed spectrum provides for shared use of a portion of the spectrum without need for a government-granted license. While compliance with some technical rules is generally still required to access unlicensed spectrum, generally, any operator or device may gain access.
  • Shared spectrum may fall between licensed and unlicensed spectrum, wherein technical rules or limitations may be required to access the spectrum, but the spectrum may still be shared by multiple operators and/or multiple RATs.
  • the holder of a license for a portion of licensed spectrum may provide licensed shared access (LSA) to share that spectrum with other parties, e.g., with suitable licensee-determined conditions to gain access.
  • LSA licensed shared access
  • Devices communicating in the radio access network 200 may utilize one or more multiplexing techniques and multiple access algorithms to enable simultaneous communication of the various devices.
  • 5G NR specifications provide multiple access for UL transmissions from UEs 222 and 224 to base station 210, and for multiplexing for DL transmissions from base station 210 to one or more UEs 222 and 224, utilizing orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) .
  • OFDM orthogonal frequency division multiplexing
  • CP cyclic prefix
  • 5G NR specifications provide support for discrete Fourier transform-spread-OFDM (DFT-s-OFDM) with a CP (also referred to as single-carrier FDMA (SC-FDMA) ) .
  • DFT-s-OFDM discrete Fourier transform-spread-OFDM
  • SC-FDMA single-carrier FDMA
  • multiplexing and multiple access are not limited to the above schemes, and may be provided utilizing time division multiple access (TDMA) , code division multiple access (CDMA) , frequency division multiple access (FDMA) , sparse code multiple access (SCMA) , resource spread multiple access (RSMA) , or other suitable multiple access schemes.
  • multiplexing DL transmissions from the base station 210 to UEs 222 and 224 may be provided utilizing time division multiplexing (TDM) , code division multiplexing (CDM) , frequency division multiplexing (FDM) , orthogonal frequency division multiplexing (OFDM) , sparse code multiplexing (SCM) , or other suitable multiplexing schemes.
  • Duplex refers to a point-to-point communication link where both endpoints can communicate with one another in both directions.
  • Full-duplex means both endpoints can simultaneously communicate with one another.
  • Half-duplex means only one endpoint can send information to the other at a time.
  • Half-duplex emulation is frequently implemented for wireless links utilizing time division duplex (TDD) .
  • TDD transmissions in different directions on a given channel are separated from one another using time division multiplexing. That is, in some scenarios, a channel is dedicated for transmissions in one direction, while at other times the channel is dedicated for transmissions in the other direction, where the direction may change very rapidly, e.g., several times per slot.
  • a full-duplex channel In a wireless link, a full-duplex channel generally relies on physical isolation of a transmitter and receiver, and suitable interference cancellation technologies.
  • Full-duplex emulation is frequently implemented for wireless links by utilizing frequency division duplex (FDD) or spatial division duplex (SDD) .
  • FDD frequency division duplex
  • SDD spatial division duplex
  • transmissions in different directions may operate at different carrier frequencies (e.g., within paired spectrum) .
  • SDD transmissions in different directions on a given channel are separated from one another using spatial division multiplexing (SDM) .
  • full-duplex communication may be implemented within unpaired spectrum (e.g., within a single carrier bandwidth) , where transmissions in different directions occur within different sub-bands of the carrier bandwidth. This type of full-duplex communication may be referred to herein as sub-band full duplex (SBFD) , also known as flexible duplex.
  • SBFD sub-band full duplex
  • FIG. 3 an expanded view of an exemplary subframe 302 is illustrated, showing an OFDM resource grid.
  • PHY physical
  • the resource grid 304 may be used to schematically represent time–frequency resources for a given antenna port. That is, in a multiple-input-multiple-output (MIMO) implementation with multiple antenna ports available, a corresponding multiple number of resource grids 304 may be available for communication.
  • the resource grid 304 is divided into multiple resource elements (REs) 306.
  • An RE which is 1 subcarrier ⁇ 1 symbol, is the smallest discrete part of the time–frequency grid, and contains a single complex value representing data from a physical channel or signal.
  • each RE may represent one or more bits of information.
  • a block of REs may be referred to as a physical resource block (PRB) or more simply a resource block (RB) 308, which contains any suitable number of consecutive subcarriers in the frequency domain.
  • an RB may include 12 subcarriers, a number independent of the numerology used.
  • an RB may include any suitable number of consecutive OFDM symbols in the time domain.
  • a set of continuous or discontinuous resource blocks may be referred to herein as a Resource Block Group (RBG) , sub-band, or bandwidth part (BWP) .
  • RBG Resource Block Group
  • BWP bandwidth part
  • a set of sub-bands or BWPs may span the entire bandwidth.
  • Scheduling of scheduled entities typically involves scheduling one or more resource elements 306 within one or more sub-bands or bandwidth parts (BWPs) .
  • a UE generally utilizes only a subset of the resource grid 304.
  • an RB may be the smallest unit of resources that can be allocated to a UE.
  • the RBs may be scheduled by a base station (e.g., gNB, eNB, etc. ) , or may be self-scheduled by a UE implementing D2D sidelink communication.
  • a base station e.g., gNB, eNB, etc.
  • the RB 308 is shown as occupying less than the entire bandwidth of the subframe 302, with some subcarriers illustrated above and below the RB 308.
  • the subframe 302 may have a bandwidth corresponding to any number of one or more RBs 308.
  • the RB 308 is shown as occupying less than the entire duration of the subframe 302, although this is merely one possible example.
  • Each 1 ms subframe 302 may consist of one or multiple adjacent slots.
  • one subframe 302 includes four slots 310, as an illustrative example.
  • a slot may be defined according to a specified number of OFDM symbols with a given cyclic prefix (CP) length.
  • CP cyclic prefix
  • a slot may include 7 or 14 OFDM symbols with a nominal CP.
  • Additional examples may include mini-slots, sometimes referred to as shortened transmission time intervals (TTIs) , having a shorter duration (e.g., one to three OFDM symbols) .
  • TTIs shortened transmission time intervals
  • These mini-slots or shortened transmission time intervals (TTIs) may in some cases be transmitted occupying resources scheduled for ongoing slot transmissions for the same or for different UEs. Any number of resource blocks may be utilized within a subframe or slot.
  • An expanded view of one of the slots 310 illustrates the slot 310 including a control region 312 and a data region 314.
  • the control region 312 may carry control channels
  • the data region 314 may carry data channels.
  • a slot may contain all DL, all UL, or at least one DL portion and at least one UL portion.
  • the structure illustrated in FIG. 3 is merely exemplary in nature, and different slot structures may be utilized, and may include one or more of each of the control region (s) and data region (s) .
  • the various REs 306 within a RB 308 may be scheduled to carry one or more physical channels, including control channels, shared channels, data channels, etc.
  • Other REs 306 within the RB 308 may also carry pilots or reference signals. These pilots or reference signals may provide for a receiving device to perform channel estimation of the corresponding channel, which may enable coherent demodulation/detection of the control and/or data channels within the RB 308.
  • the slot 310 may be utilized for broadcast, multicast, groupcast, or unicast communication.
  • a broadcast, multicast, or groupcast communication may refer to a point-to-multipoint transmission by one device (e.g., a base station, UE, or other similar device) to other devices.
  • a broadcast communication is delivered to all devices, whereas a multicast or groupcast communication is delivered to multiple intended recipient devices.
  • a unicast communication may refer to a point-to-point transmission by a one device to a single other device.
  • the scheduling entity may allocate one or more REs 306 (e.g., within the control region 312) to carry DL control information including one or more DL control channels, such as a physical downlink control channel (PDCCH) , to one or more scheduled entities (e.g., UEs) .
  • the PDCCH carries downlink control information (DCI) including but not limited to power control commands (e.g., one or more open loop power control parameters and/or one or more closed loop power control parameters) , scheduling information, a grant, and/or an assignment of REs for DL and UL transmissions.
  • DCI downlink control information
  • the PDCCH may further carry hybrid automatic repeat request (HARQ) feedback transmissions such as an acknowledgment (ACK) or negative acknowledgment (NACK) .
  • HARQ is a technique well-known to those of ordinary skill in the art, wherein the integrity of packet transmissions may be checked at the receiving side for accuracy, e.g., utilizing any suitable integrity checking mechanism, such as a checksum or a cyclic redundancy check (CRC) . If the integrity of the transmission is confirmed, an ACK may be transmitted, whereas if not confirmed, a NACK may be transmitted. In response to a NACK, the transmitting device may send a HARQ retransmission, which may implement chase combining, incremental redundancy, etc.
  • the base station may further allocate one or more REs 306 (e.g., in the control region 312 or the data region 314) to carry other DL signals, such as a demodulation reference signal (DMRS) ; a phase-tracking reference signal (PT-RS) ; a channel state information (CSI) reference signal (CSI-RS) ; and a synchronization signal block (SSB) .
  • SSBs may be broadcast at regular intervals based on a periodicity (e.g., 5, 10, 20, 40, 80, or 160 ms) .
  • An SSB includes a primary synchronization signal (PSS) , a secondary synchronization signal (SSS) , and a physical broadcast control channel (PBCH) .
  • PSS primary synchronization signal
  • SSS secondary synchronization signal
  • PBCH physical broadcast control channel
  • a UE may utilize the PSS and SSS to achieve radio frame, subframe, slot, and symbol synchronization in the time domain, identify the center of the channel (system
  • the PBCH in the SSB may further include a master information block (MIB) that includes various system information, along with parameters for decoding a system information block (SIB) .
  • the SIB may be, for example, a SystemInformationType 1 (SIB1) that may include various additional system information.
  • SIB and SIB1 together provide the minimum system information (SI) for initial access.
  • Examples of system information transmitted in the MIB may include, but are not limited to, a subcarrier spacing (e.g., default downlink numerology) , system frame number, a configuration of a PDCCH control resource set (CORESET) (e.g., PDCCH CORESET0) , a cell barred indicator, a cell reselection indicator, a raster offset, and a search space for SIB1.
  • Examples of remaining minimum system information (RMSI) transmitted in the SIB1 may include, but are not limited to, a random access search space, a paging search space, downlink configuration information, and uplink configuration information.
  • a base station may transmit other system information (OSI) as well.
  • OSI system information
  • the scheduled entity may utilize one or more REs 306 to carry UL control information (UCI) including one or more UL control channels, such as a physical uplink control channel (PUCCH) , to the scheduling entity.
  • UCI may include a variety of packet types and categories, including pilots, reference signals, and information configured to enable or assist in decoding uplink data transmissions.
  • uplink reference signals may include a sounding reference signal (SRS) and an uplink DMRS.
  • the UCI may include a scheduling request (SR) , i.e., request for the scheduling entity to schedule uplink transmissions.
  • SR scheduling request
  • the scheduling entity may transmit downlink control information (DCI) that may schedule resources for uplink packet transmissions.
  • DCI may also include HARQ feedback, channel state feedback (CSF) , such as a CSI report, or any other suitable UCI.
  • CSF channel state feedback
  • one or more REs 306 may be allocated for data traffic. Such data traffic may be carried on one or more traffic channels, such as, for a DL transmission, a physical downlink shared channel (PDSCH) ; or for an UL transmission, a physical uplink shared channel (PUSCH) .
  • PDSCH physical downlink shared channel
  • PUSCH physical uplink shared channel
  • one or more REs 306 within the data region 314 may be configured to carry other signals, such as one or more SIBs and DMRSs.
  • the PDSCH may carry a plurality of SIBs, not limited to SIB1, discussed above.
  • the OSI may be provided in these SIBs, e.g., SIB2 and above.
  • the control region 312 of the slot 310 may include a physical sidelink control channel (PSCCH) including sidelink control information (SCI) transmitted by an initiating (transmitting) sidelink device (e.g., Tx V2X device or other Tx UE) towards a set of one or more other receiving sidelink devices (e.g., Rx V2X device or other Rx UE) .
  • the data region 314 of the slot 310 may include a physical sidelink shared channel (PSSCH) including sidelink data traffic transmitted by the initiating (transmitting) sidelink device within resources reserved over the sidelink carrier by the transmitting sidelink device via the SCI.
  • PSSCH physical sidelink shared channel
  • HARQ feedback information may be transmitted in a physical sidelink feedback channel (PSFCH) within the slot 310 from the receiving sidelink device to the transmitting sidelink device.
  • PSFCH physical sidelink feedback channel
  • one or more reference signals such as a sidelink SSB, a sidelink CSI-RS, a sidelink SRS, and/or a sidelink positioning reference signal (PRS) may be transmitted within the slot 310.
  • PRS sidelink positioning reference signal
  • Transport channels carry blocks of information called transport blocks (TB) .
  • TBS transport block size
  • MCS modulation and coding scheme
  • the channels or carriers illustrated in FIG. 3 are not necessarily all of the channels or carriers that may be utilized between devices, and those of ordinary skill in the art will recognize that other channels or carriers may be utilized in addition to those illustrated, such as other traffic, control, and feedback channels.
  • 5G-NR networks may support carrier aggregation (CA) of component carriers (CCs) transmitted from different cells and/or different transmission and reception points (TRPs) in a multi-cell transmission environment.
  • CA carrier aggregation
  • CCs component carriers
  • TRPs transmission and reception points
  • the different TRPs may be associated with a single serving cell or multiple serving cells.
  • component carrier may refer to a carrier frequency (or band) utilized for communication within a cell.
  • FIG. 4 is a diagram illustrating a multi-cell transmission environment 400 according to some aspects.
  • the multi-cell transmission environment 400 includes a primary serving cell (PCell) 402 and one or more secondary serving cells (SCells) 406a, 406b, 406c, and 406d.
  • the PCell 402 may be referred to as the anchor cell that provides a radio resource control (RRC) connection to a UE (e.g., a UE 410) .
  • RRC radio resource control
  • each of the serving cells corresponds to a component carrier (CC) .
  • the CC of the PCell 402 may be referred to as a primary CC, and the CC of an SCell 406a -406d may be referred to as a secondary CC.
  • the UE 410 may correspond to any of the UEs or scheduled entities shown in any one or more of FIGs. 1, 2, 5, 6, 7, 8, 9, 10, and 11.
  • Each of the PCell 402 and the SCells 406a -406d may be served by a transmission and reception point (TRP) .
  • TRP transmission and reception point
  • the PCell 402 may be served by a TRP 404 and each of the SCells 406a–406c may be served by a respective TRP 408a -408c.
  • Each TRP 404 and 408a -408c may be a base station (e.g., gNB) , remote radio head of a gNB, or other scheduling entity similar to those illustrated in any one or more of FIGs. 1, 2, 5, 6, 7, 8, 9, 10, and 17.
  • the PCell 402 and one or more of the SCells (e.g., the SCell 406d) may be co-located.
  • a TRP for the PCell 402 and a TRP for the SCell 406d may be installed at the same geographic location.
  • a TRP e.g., the TRP 404
  • the coverage of the PCell 402 and the SCell 406d may differ since component carriers in different frequency bands may experience different path loss, and thus provide different coverage.
  • the PCell 402 is responsible not only for connection setup, but also for radio resource management (RRM) and radio link monitoring (RLM) of the connection with the UE 410.
  • the PCell 402 may activate one or more of the SCells (e.g., the SCell 406a) for multi-cell communication with the UE 410 to improve the reliability of the connection to the UE 410 and/or to increase the data rate.
  • the PCell may activate the SCell 406a on an as-needed basis (instead of maintaining the SCell activation when the SCell 406a is not utilized for data transmission/reception) to reduce power consumption by the UE 410.
  • the PCell 402 may be a low band cell
  • the SCells 406 may be high band cells.
  • a low band cell uses a CC in a frequency band lower than that of the high band cells.
  • the high band cells may each use a respective mmWave CC (e.g., FR2 or higher)
  • the low band cell may use a CC in a lower frequency band (e.g., sub-6 GHz band or FR1) .
  • a cell using an FR2 or higher CC can provide greater bandwidth than a cell using an FR1 CC.
  • beamforming may be used to transmit and receive signals.
  • the PCell 402 may utilize a first radio access technology (RAT) , such as LTE, while one or more of the SCells 406 may utilize a second RAT, such as 5G-NR.
  • RAT radio access technology
  • the multi-cell transmission environment may be referred to as a Multi-RAT -Dual Connectivity (MR-DC) environment.
  • MR-DC is an Evolved-Universal Terrestrial Radio Access Network -New Radio Dual Connectivity (EN-DC) mode that enables a UE to simultaneously connect to an LTE base station and a NR base station to receive data packets from and send data packets to both the LTE base station and the NR base station.
  • the EN-DC system 500 may be the same wireless communication system 100 described above and illustrated in FIG. 1.
  • the EN-DC system 500 includes a user equipment (UE) 502, a NG-RAN (e.g., an NG-RAN gNB 506) , an LTE RAN (e.g., an E-UTRAN eNB 504) , and a core network (e.g., an Evolved Packet Core (EPC 508) ) .
  • DN external data network
  • the Internet such as (but not limited to) the Internet, Ethernet network, or a local area network.
  • the EPC 508 may include, for example, a mobility management entity (MME) 510, a serving gateway (SGW) 512 and a packet data network gateway (PGW) 514.
  • MME mobility management entity
  • SGW serving gateway
  • PGW packet data network gateway
  • the MME 510 is the control node that processes the signaling between the UE 502 and the EPC 508.
  • the MME 510 provides bearer and connection management for the UE 502 according to mechanisms defined for the EPC 508.
  • the MME 510 may manage security when the UE 502 connects to the E-UTRAN eNB 504 by using information provided by a Home Subscriber Server (HSS) (not shown in FIG. 5) to authenticate UEs and update UEs location information in the HSS.
  • HSS Home Subscriber Server
  • the MME 510 may further maintain the tracking area identity (TAI) of the current tracking area (e.g., group of neighboring cells/eNBs) within which the UE 502 is located to enable paging of the UE 502 when the UE is in idle mode. Moreover, the MME 510 may manage connectivity via packet data network (PDN) connections between the UE 502 and the PGW 514, and determine and provide a set of Quality of Service (QoS) parameters to the E-UTRAN 504.
  • PDN packet data network
  • QoS Quality of Service
  • the UE 502 may transmit a registration request and PDN session establishment request to the EPC 508 via the E-UTRAN eNB 504.
  • the MME 510 may process the registration request and PDN session establishment request and establish a PDN session between the UE 502 and the external DN 516 via the SGW 512 and PGW 514.
  • the 5G LTE infrastructure (e.g., E-UTRAN eNB 504 and EPC 508) supports a connection to the NG-RAN gNB 506.
  • the NG-RAN gNB 506 connects to the EPC 508 at the data plane level through the SGW 512.
  • the NG-RAN gNB 506 does not connect to the MME 510, and as such, does not have a control plane connection to the EPC 508.
  • the NG-RAN gNB 506 connects to the E-UTRAN eNB 504 to activate and deactivate 5G bearers. Therefore, the E-UTRAN eNB 504 acts as an anchor or master node and the NG-RAN gNB 506 acts as a secondary node.
  • the E-UTRAN eNB 504 may be configured for communication with the UE 502 using an LTE frequency band
  • the NG-RAN gNB 506 may be configured for communication with the UE 502 using a NR frequency band (e.g., FR1 or FR2) .
  • the UE 502 can signal to the EPC 508 (e.g., the MME 510) that the UE 502 is capable of simultaneous connection to both the E-UTRAN eNB 504 and NG-RAN gNB 506.
  • the MME 510 confirms that the UE 502 is authorized for dual connectivity and notifies the E-UTRAN eNB 504 that the UE 502 is permitted to connect to the NG-RAN gNB 506.
  • the E- UTRAN eNB 504 may then communicate with the NG-RAN gNB 506 to activate a bearer on the NG-RAN gNB 506.
  • the UE 502 can then receive a radio resource control (RRC) reconfiguration message assigning the 5G bearer to the UE 502.
  • RRC radio resource control
  • the UE 502 can then access the NG-RAN gNB 506 using a random access procedure to establish simultaneous dual connectivity to both the E-UTRAN eNB 504 and NG-RAN gNB 506.
  • Additional secondary nodes e.g., other gNBs may also be added using a similar procedure.
  • a given UE may have a particular capability.
  • a UE may support communication via certain RATs and/or over certain frequency bands.
  • one of more of these limitations may be due to the baseband processing capability and/or other processing capability of the UE.
  • FIG. 6 is a diagram illustrating an example of signaling 600 associated with a network configuring a UE in a wireless communication network including a base station (BS) 602 and a user equipment (UE) 604.
  • the BS 602 may correspond to any of the base stations or scheduling entities shown in any one or more of FIGs. 1, 2, 4, 5, 7, 8, 9, 10, and 17.
  • the UE 604 may correspond to any of the UEs or scheduled entities shown in any one or more of FIGs. 1, 2, 4, 5, 7, 8, 9, 10, and 11.
  • the UE 604 may initiate a registration procedure with the BS 602 to gain access to a network served by the BS 602.
  • the UE 604 may perform an initial cell search by detecting a PSS from the BS 602 (e.g., the PSS of a cell of the BS 602) .
  • the PSS may enable the UE 604 to synchronize to period timing of the BS 602 and may indicate a physical layer identity value assigned to the cell.
  • the UE 604 may also receive an SSS from the BS 602 that enables the UE 604 to synchronize on the radio frame level with the cell.
  • the SSS may also provide a cell identity value, which the UE 604 may combine with the physical layer identity value to identify the cell.
  • the UE 604 may then receive the MIB and SIBs broadcast by the BS 602 (e.g., as discussed above) to acquire information related to random access channel (RACH) procedures, physical channels, and so on.
  • SIB1 provides scheduling information and/or availability of other SIB types and/or information (e.g., public land mobile network (PLMN) information and/or cell barring information) that can guide a UE in performing cell selection and/or cell reselection.
  • PLMN public land mobile network
  • the UE 604 may perform a random access procedure to initiate RRC connectivity with the BS 602.
  • the BS 602 may request capability information from the UE 604. For example, the BS 602 may transmit a UE capability inquiry to the UE 604 (e.g., via an RRC message) .
  • the UE 604 may transmit its capability information to the BS 602. For example, the UE 604 may transmit a UE capability message to the BS 602 (e.g., via an RRC message) .
  • the BS 602 may transmit an RRC configuration to the UE 604 (e.g., in conjunction with completing the operation of setting up a connection with the UE 604) .
  • the RRC configuration may specify the resources (e.g., the number of layers and/or the bandwidth) to be used by the UE 604 when accessing one or more cells of the network.
  • a user equipment may prefer a certain type of network connectivity. For example, to save UE power, a UE may want to prevent being configured for a non-standalone (NSA) mode of operation, but allow an LTE standalone (SA) mode of operation and/or an NR SA mode of operation. As another example, a UE may want to prevent an NR SA mode of operation (e.g., when an NR cell is not suitable for SA due to a network configuration error or some other condition) . As a further example, a UE may want to only be configured for an LTE mode of operation to improve battery life.
  • NSA non-standalone
  • SA LTE standalone
  • NR SA mode of operation e.g., when an NR cell is not suitable for SA due to a network configuration error or some other condition
  • a UE may want to only be configured for an LTE mode of operation to improve battery life.
  • FIG. 7 illustrates an example of NR SA connectivity in a 5G wireless communication system (5GS) 700.
  • the 5GS 700 may be the same wireless communication system 100 described above and illustrated in FIG. 1.
  • the 5GS 700 includes a user equipment (UE) 702 and a next generation radio access network (NG-RAN) 704. As shown in FIG. 7, NG-RAN 704 connects to a 5G core network 706 in this case.
  • UE user equipment
  • NG-RAN next generation radio access network
  • the core network 706 may include, for example, an access and mobility management function (AMF) 708, a session management function (SMF) 710, and a user plane function (UPF) 712.
  • the AMF 708 and SMF 710 employ control plane (e.g., Non Access Stratum (NAS) ) signaling to perform various functions related to mobility management and session management for the UE 702.
  • control plane e.g., Non Access Stratum (NAS)
  • NAS Non Access Stratum
  • the AMF 708 provides connectivity, mobility management and authentication of the UE 702
  • the SMF 710 provides session management of the UE 702 (e.g., processes signaling related to protocol data unit (PDU) sessions between the UE 702 and the external DN 714) .
  • the UPF 712 provides user plane connectivity to route 5G (NR) packets to/from the UE 702 via the NG-RAN 704.
  • NR 5G
  • the core network 706 may further include other functions, such as a policy control function (PCF) 716, authentication server function (AUSF) 718, unified data management (UDM) 720, network slice selection function (NSSF) 722, and other functions (not illustrated, for simplicity) .
  • PCF policy control function
  • AUSF authentication server function
  • UDM unified data management
  • NSF network slice selection function
  • the PCF 716 provides policy information (e.g., rules) for control plane functions, such as network slicing, roaming, and mobility management.
  • the PCF 716 supports 5G quality of service (QoS) policies, network slice policies, and other types of policies.
  • QoS quality of service
  • the AUSF 718 performs authentication of UEs 702.
  • the UDM 720 facilitates generation of authentication and key agreement (AKA) credentials, performs user identification and manages subscription information and UE context.
  • AKA authentication and key agreement
  • the AMF 708 includes a co-located security anchor function (SEAF) that allows for re-authentication of a UE 702 when the UE moves between different NG-RANs 704 without having to perform a complete authentication process with the AUSF 718.
  • SEAF co-located security anchor function
  • the NSSF 722 redirects traffic to a network slice.
  • Network slices may be defined, for example, for different classes of subscribers or use cases, such as smart home, Internet of Things (IoT) , connected car, smart energy grid, etc. Each use case may receive a unique set of optimized resources and network topology (e.g., a network slice) to meet the connectivity, speed, power, and capacity requirements of the use case.
  • the UE 702 may transmit a registration request and PDU session establishment request to the 5G core network 706 via the NG-RAN 704.
  • the AMF 708 and SMF 710 may process the registration request and PDU session establishment request and establish a PDU session between the UE 702 and the external DN 714 via the UPF 712.
  • a PDU session may include one or more sessions (e.g., data sessions or data flows) and may be served by multiple UPFs 712 (only one of which is shown for convenience) .
  • Examples of data flows include, but are not limited to, Internet Protocol (IP) flows, Ethernet flows and unstructured data flows.
  • IP Internet Protocol
  • LTE SA connectivity may be established, for example, via the E-UTRAN eNB 504 and EPC 508 of FIG. 5.
  • the UE 502 would not use the NG-RAN gNB 506 to establish a connection to the network.
  • the UE 502 may transmit a registration request and PDN session establishment request to the EPC 508 via the E-UTRAN eNB 504 as discussed above.
  • the MME 510 may process the registration request and PDN session establishment request and establish a PDN session between the UE 502 and the external DN 516 via the SGW 512 and PGW 514.
  • the UE may initially be connected to an LTE network.
  • the LTE network may configure the UE to conduct an NR measurement (e.g., event B1 or B2) .
  • the UE sends a corresponding NR measurement report to the network, whereupon the network could configure the UE to use an NR cell in one of two ways.
  • the network could configure the UE enter an NSA mode such as EN-DC (e.g., by adding an NR cell as an SCG) .
  • the network could redirect or handover the UE to an NR cell (e.g., the UE enters an NR SA mode) .
  • this configuration decision is controlled by the network (e.g., without taking a preference of the UE into account) .
  • the UE may prefer to not enter the NSA mode (e.g., to conserve power) .
  • the LTE network may configure the UE to conduct an NR measurement (e.g., event B1) .
  • the UE sends an NR measurement report to the network, whereupon the network hands-over the UE to an NR cell.
  • the NR cell might not be suitable for an SA mode of operation for the UE (e.g., there might not be an appropriate tracking area identity (TAI) or tracking area code (TAC) configuration) .
  • TAI tracking area identity
  • TAC tracking area code
  • the NR cell When the NR cell is not suitable for an SA mode of operation, this results in a handover failure and the UE falls-back to the LTE network.
  • the UE may repeatedly try to connect to the NR cell, resulting in repeated radio link failures (RLFs) . This scenario may affect UE service. Also, a similar issue may arise when an LTE cell is not suitable for an SA mode of operation for a UE.
  • RLFs radio link failures
  • the disclosure relates in some aspects to using a message to inform the network of a preferred network connectivity mode (e.g., LTE SA, MR-DC, NR SA, etc. ) for a UE.
  • a preferred network connectivity mode e.g., LTE SA, MR-DC, NR SA, etc.
  • an existing message e.g., a UAI message
  • the IE can inform the network that the UE does not want an NSA mode of operation or that the UE does not want a certain SA mode of operation.
  • this scheme may provide better UE power savings, better UE mobility performance, and/or better UE network mode changes since the UE can control its network connectivity at least to some extent.
  • Table 1 illustrates an example of an IE for a UAI message.
  • the noncritical Extension UEAssistanceInformation-v-1650-IEs includes information indicating network connectivity preferences for a UE.
  • the networkMode-Preference-16 element may include entries indicating that the UE currently prefers lte (e.g., an LTE SA mode) , mrdc (e.g., one or more types of MR-DC such as EN-DC) , nr (e.g., an NR SA mode) , as so on.
  • Other connectivity modes may be indicated in other examples.
  • the lteBlackFreqList-r16 element may include entries that identify one or more LTE frequency bands that the UE has currently designated as being unsuitable for network connectivity (e.g., the UE has recently experienced repeated RLFs on an LTE cell that uses the indicated LTE frequency band or bands) .
  • the nrBlackFreqList-r16 element may include entries that identify one or more NR frequency bands that the UE has currently designated as being unsuitable for network connectivity (e.g., the UE has recently experienced repeated RLFs on an NR cell that uses the indicated NR frequency band or bands) .
  • the mrdcBlackBrandcomboList-r16 element may include entries that identify one or more frequency band combinations that the UE has currently designated as being unsuitable for network connectivity (e.g., the UE has recently experienced repeated RLFs on cells using the indicated dual connectivity frequency bands) .
  • FIG. 8 is a signaling diagram 800 illustrating an example of signaling associated with user equipment preferences in a wireless communication system including a base station (BS) 802 and a user equipment (UE) 804.
  • the BS 802 may correspond to any of the base stations or scheduling entities shown in any one or more of FIGs. 1, 2, 4, 5, 6, 8, 9, 10, and 17.
  • the UE 804 may correspond to any of the UEs or scheduled entities shown in any one or more of FIGs. 1, 2, 4, 5, 6, 8, 9, 10, and 11.
  • the BS 802 transmits an RRC Configuration message to the UE 804 to configure a network connection for the UE 804.
  • the RRC Configuration may specify an NSA mode of operation, or some other mode of operation.
  • the UE 804 detects low power consumption and low throughput at the UE.For example, the UE 804 may detect that the power consumption of the UE 804 is currently less than a battery threshold. In addition, the UE 804 may detect that the uplink throughput of the UE 804 is currently less than an uplink throughput threshold and that the downlink throughput of the UE 804 is currently less than a downlink throughput threshold.
  • the UE 804 may select a network connectivity preference. For example, the UE 804 may elect to switch to an LTE SA mode of operation or an NR SA mode of operation.
  • the UE 804 transmits an indication of the network connectivity preference to the BS 802.
  • the UE 804 may transmit a User Equipment Assistance Information (UAI) message, an Uplink Information Transfer Multi -Radio Access Technology -Dual Connectivity (MR-DC) message, or an Uplink Information Transfer Inter -Radio Access Technology (IRAT) message that includes an information element (e.g., from Table 1) that indicates the preferred mode of operation selected at 810.
  • UAI User Equipment Assistance Information
  • MR-DC Uplink Information Transfer Multi -Radio Access Technology -Dual Connectivity
  • IRAT Uplink Information Transfer Inter -Radio Access Technology
  • the BS 802 configures a connection for the UE 804 based on the indication received at 812. For example, the BS 802 may configure the UE 804 to establish an SA connection with the network.
  • the BS 802 transmits an RRC Configuration message to the UE 804 to configure a new network connection for the UE 804 based on the configuration of 814.
  • FIG. 9 is a signaling diagram 900 illustrating an example of signaling associated with user equipment preferences in a wireless communication system including a base station (BS) 902 and a user equipment (UE) 904.
  • the BS 902 may correspond to any of the base stations or scheduling entities shown in any one or more of FIGs. 1, 2, 4, 5, 6, 7, 8, 10, and 17.
  • the UE 904 may correspond to any of the UEs or scheduled entities shown in any one or more of FIGs. 1, 2, 4, 5, 6, 7, 8, 10, and 11.
  • the BS 902 transmits an RRC Configuration message to the UE 904 to configure a network connection for the UE 904.
  • the RRC Configuration may specify an SA mode of operation, or some other mode of operation.
  • the RRC configuration message of 906 may correspond to the RRC Configuration message transmitted at 716 of FIG. 7.
  • the UE 904 detects low battery power at the UE. For example, the UE 904 may detect that the power level of the battery of the UE 904 is currently less than a low battery threshold.
  • the UE 904 may select a network connectivity preference. For example, the UE 904 may elect to switch to an LTE-only mode of operation (e.g., to conserve power) .
  • the UE 904 transmits an indication of the network connectivity preference to the BS 902.
  • the UE 904 may transmit a User Equipment Assistance Information (UAI) message, an Uplink Information Transfer Multi -Radio Access Technology -Dual Connectivity (MR-DC) message, or an Uplink Information Transfer Inter -Radio Access Technology (IRAT) message that includes an information element that indicates the preferred mode of operation selected at 910.
  • UAI User Equipment Assistance Information
  • MR-DC Uplink Information Transfer Multi -Radio Access Technology -Dual Connectivity
  • IRAT Uplink Information Transfer Inter -Radio Access Technology
  • the BS 902 configures a connection for the UE 904 based on the indication received at 912. For example, the BS 902 may configure the UE 904 to establish only an LTE connection with the network.
  • the BS 902 transmits an RRC Configuration message to the UE 904 to configure a new network connection for the UE 904 based on the configuration of 914.
  • FIG. 10 is a signaling diagram 1000 illustrating an example of signaling associated with user equipment preferences in a wireless communication system including a base station (BS) 1002 and a user equipment (UE) 1004.
  • the BS 1002 may correspond to any of the base stations or scheduling entities shown in any one or more of FIGs. 1, 2, 4, 5, 6, 7, 8, 9, and 17.
  • the UE 1004 may correspond to any of the UEs or scheduled entities shown in any one or more of FIGs. 1, 2, 4, 5, 6, 7, 8, 9, and 11.
  • the BS 1002 transmits an RRC Configuration message to the UE 1004 to configure a network connection for the UE 1004.
  • the RRC Configuration may specify an NR SA mode of operation, an LTE SA mode of operation, an EN-DC mode of operation, or some other mode of operation.
  • the UE 1004 may have previously been operating in an LTE SA mode of operation and the BS 1002 configured the UE 1004 to conduct measurements on NR cells (signaling not shown in FIG. 10) .
  • the BS 1002 may have reconfigured the UE for an NR SA mode of operation at 1006.
  • the BS 1002 may have redirected the UE or handed over the UE to an NR SA mode of operation.
  • the UE 1004 detects repeated radio link failures (RLFs) on a cell configured at 1006. For example, due to a base station configuration error or some other condition, the UE 1004 may repeatedly fail to establish a connection with the cell.
  • the UE 1004 may experience continuous radio link failure (RLF) in an NR cell (e.g., an RLF count based on a timer T may be larger than an RLF threshold) .
  • the UE 1004 may experience continuous RLF in an LTE cell (e.g., an RLF count based on a timer T may be larger than an RLF threshold) .
  • the UE 1004 may select a network connectivity preference. For example, the UE 1004 may elect to blacklist the radio frequency bands of the cell (s) specified by the RRC Configuration of 1006. If the RRC Configuration of 1006 was for an NR SA mode of operation, one or more NR radio frequency bands may be blacklisted here. If the RRC Configuration of 1006 was for an LTE SA mode of operation, one or more LTE radio frequency bands may be blacklisted here. If the RRC Configuration of 1006 was for an NSA mode of operation, one or more radio frequency band combinations (e.g., one or more EN-DC band combinations) may be blacklisted here.
  • the UE 1004 transmits an indication of the network connectivity preference to the BS 1002.
  • the UE 1004 may transmit a User Equipment Assistance Information (UAI) message, an Uplink Information Transfer Multi -Radio Access Technology -Dual Connectivity (MR-DC) message, or an Uplink Information Transfer Inter -Radio Access Technology (IRAT) message that includes an information element with a radio frequency band blacklist (e.g., corresponding to the blacklisted cell (s) ) .
  • UAI User Equipment Assistance Information
  • MR-DC Uplink Information Transfer Multi -Radio Access Technology -Dual Connectivity
  • IRAT Uplink Information Transfer Inter -Radio Access Technology
  • the BS 1002 configures a connection for the UE 1004 based on the indication received at 1012. For example, the BS 1002 may configure the UE 1004 to establish a connection to a different cell than was specified in the RRC Configuration of 1006.
  • the BS 1002 transmits an RRC Configuration message to the UE 1004 to configure a new network connection for the UE 1004 based on the configuration of 1014.
  • FIG. 11 is a block diagram illustrating an example of a hardware implementation for a UE 1100 employing a processing system 1114.
  • the UE 1100 may be a device configured to wirelessly communicate with a base station, as discussed in any one or more of FIGs. 1 -10.
  • the UE 1100 may correspond to any of the UEs or scheduled entities shown in any one or more of FIGs. 1, 2, 4, 5, 6, 7, 8, 9, and 10.
  • the processing system 1114 may include one or more processors 1104.
  • processors 1104 include microprocessors, microcontrollers, digital signal processors (DSPs) , field programmable gate arrays (FPGAs) , programmable logic devices (PLDs) , state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functionality described throughout this disclosure.
  • DSPs digital signal processors
  • FPGAs field programmable gate arrays
  • PLDs programmable logic devices
  • state machines gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functionality described throughout this disclosure.
  • the UE 1100 may be configured to perform any one or more of the functions described herein. That is, the processor 1104, as utilized in a UE 1100, may be used to implement any one or more of the processes and procedures described herein.
  • the processor 1104 may in some instances be implemented via a baseband or modem chip and in other implementations, the processor 1104 may include a number of devices distinct and different from a baseband or modem chip (e.g., in such scenarios as may work in concert to achieve the examples discussed herein) . And as mentioned above, various hardware arrangements and components outside of a baseband modem processor can be used in implementations, including RF-chains, power amplifiers, modulators, buffers, interleavers, adders/summers, etc.
  • the processing system 1114 may be implemented with a bus architecture, represented generally by the bus 1102.
  • the bus 1102 may include any number of interconnecting buses and bridges depending on the specific application of the processing system 1114 and the overall design constraints.
  • the bus 1102 communicatively couples together various circuits including one or more processors (represented generally by the processor 1104) , a memory 1105, and computer-readable media (represented generally by the computer-readable medium 1106) .
  • the bus 1102 may also link various other circuits such as timing sources, peripherals, voltage regulators, and power management circuits, which are well known in the art, and therefore, will not be described any further.
  • a bus interface 1108 provides an interface between the bus 1102 and a transceiver 1110 and an antenna array 1120, and an interface between the bus 1102 and an interface 1130.
  • the transceiver 1110 provides a communication interface or means for communicating with various other apparatus over a wireless transmission medium.
  • the interface 1130 provides a communication interface or means of communicating with various other apparatuses and devices (e.g., other devices housed within the same apparatus as the UE or other external apparatuses) over an internal bus or external transmission medium, such as an Ethernet cable.
  • the interface 1130 may include a user interface (e.g., keypad, display, speaker, microphone, joystick) .
  • a user interface is optional, and may be omitted in some examples, such as an IoT device.
  • the processor 1104 is responsible for managing the bus 1102 and general processing, including the execution of software stored on the computer-readable medium 1106.
  • the software when executed by the processor 1104, causes the processing system 1114 to perform the various functions described below for any particular apparatus.
  • the computer-readable medium 1106 and the memory 1105 may also be used for storing data that is manipulated by the processor 1104 when executing software.
  • the memory 1105 may include network connectivity information 1115 (e.g., UE network connectivity preferences) that may be used by the processor 1104 for network connectivity operations as discussed herein.
  • One or more processors 1104 in the processing system may execute 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, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.
  • the software may reside on a computer-readable medium 1106.
  • the computer-readable medium 1106 may be a non-transitory computer-readable medium.
  • a non-transitory computer-readable medium includes, by way of example, a magnetic storage device (e.g., hard disk, floppy disk, magnetic strip) , an optical disk (e.g., a compact disc (CD) or a digital versatile disc (DVD) ) , a smart card, a flash memory device (e.g., a card, a stick, or a key drive) , a random access memory (RAM) , a read only memory (ROM) , a programmable ROM (PROM) , an erasable PROM (EPROM) , an electrically erasable PROM (EEPROM) , a register, a removable disk, and any other suitable medium for storing software and/or instructions that may be accessed and read by a computer.
  • a magnetic storage device e.g., hard disk, floppy disk, magnetic strip
  • an optical disk e.g.
  • the computer-readable medium 1106 may reside in the processing system 1114, external to the processing system 1114, or distributed across multiple entities including the processing system 1114.
  • the computer-readable medium 1106 may be embodied in a computer program product.
  • a computer program product may include a computer-readable medium in packaging materials.
  • the UE 1100 may be configured to perform any one or more of the operations described herein (e.g., as described above in conjunction with FIGs. 1 -10 and as described below in conjunction with FIGs. 12 -16) .
  • the processor 1104, as utilized in the UE 1100 may include circuitry configured for various functions.
  • the processor 1104 may include communication and processing circuitry 1141.
  • the communication and processing circuitry 1141 may be configured to communicate with a base station, such as a gNB.
  • the communication and processing circuitry 1141 may include one or more hardware components that provide the physical structure that performs various processes related to wireless communication (e.g., signal reception and/or signal transmission) as described herein.
  • the communication and processing circuitry 1141 may further include one or more hardware components that provide the physical structure that performs various processes related to signal processing (e.g., processing a received signal and/or processing a signal for transmission) as described herein.
  • the communication and processing circuitry 1141 may include two or more transmit/receive chains.
  • the communication and processing circuitry 1141 may further be configured to execute communication and processing software 1151 included on the computer-readable medium 1106 to implement one or more functions described herein.
  • the communication and processing circuitry 1141 may obtain information from a component of the UE 1100 (e.g., from the transceiver 1110 that receives the information via radio frequency signaling or some other type of signaling suitable for the applicable communication medium) , process (e.g., decode) the information, and output the processed information.
  • the communication and processing circuitry 1141 may output the information to another component of the processor 1104, to the memory 1105, or to the bus interface 1108.
  • the communication and processing circuitry 1141 may receive one or more of signals, messages, other information, or any combination thereof.
  • the communication and processing circuitry 1141 may receive information via one or more channels.
  • the communication and processing circuitry 1141 may include functionality for a means for receiving.
  • the communication and processing circuitry 1141 may include functionality for a means for decoding.
  • the communication and processing circuitry 1141 may obtain information (e.g., from another component of the processor 1104, the memory 1105, or the bus interface 1108) , process (e.g., encode) the information, and output the processed information.
  • the communication and processing circuitry 1141 may output the information to the transceiver 1110 (e.g., that transmits the information via radio frequency signaling or some other type of signaling suitable for the applicable communication medium) .
  • the communication and processing circuitry 1141 may send one or more of signals, messages, other information, or any combination thereof.
  • the communication and processing circuitry 1141 may send information via one or more channels.
  • the communication and processing circuitry 1141 may include functionality for a means for sending (e.g., a means for transmitting) .
  • the communication and processing circuitry 1141 may include functionality for a means for encoding.
  • the processor 1104 may include network connectivity preference selection circuitry 1142 configured to perform network connectivity preference-related operations as discussed herein.
  • the network connectivity preference selection circuitry 1142 may be configured to execute network connectivity preference selection software 1152 included on the computer-readable medium 1106 to implement one or more functions described herein.
  • the network connectivity preference selection circuitry 1142 may include functionality for a means for transmitting a first message to a base station, where the first message may include an indication of a first network connectivity preference of the user equipment.
  • the network connectivity preference selection circuitry 1142 may be configured to determine a network connectivity preference of the user equipment and cause the communication and processing circuitry 1141 to send a message that includes an indication (e.g., an information element) indicating the determined network connectivity preference.
  • the network connectivity preference selection circuitry 1142 may include functionality for a means for detecting that a power consumption of the user equipment is less than a first threshold.
  • the network connectivity preference selection circuitry 1142 may be configured to monitor power consumption of the user equipment and compare the monitored power consumption to a power consumption threshold.
  • the network connectivity preference selection circuitry 1142 may include functionality for a means for detecting that at least one data throughput of the user equipment is less than or greater than at least one second threshold.
  • the network connectivity preference selection circuitry 1142 may be configured to monitor uplink and downlink throughput of the user equipment, and compare the monitored uplink throughput to an uplink throughput threshold, and compare the monitored downlink throughput to a downlink throughput threshold.
  • the network connectivity preference selection circuitry 1142 may include functionality for a means for configuring a message to indicate a preference for a mode of network connectivity.
  • the network connectivity preference selection circuitry 1142 may be configured to determine a standalone or non-standalone preference of the user equipment and cause the communication and processing circuitry 1141 to send a message that includes an indication (e.g., an information element) indicating the determined preference.
  • the network connectivity preference selection circuitry 1142 may include functionality for a means for detecting that a battery power level of the user equipment is less than a threshold.
  • the network connectivity preference selection circuitry 1142 may be configured to monitor the power level of a battery and compare the monitored power level to a battery power threshold.
  • the network connectivity preference selection circuitry 1142 may include functionality for a means for detecting that a radio link failure count exceeds a count threshold.
  • the network connectivity preference selection circuitry 1142 may be configured to monitor the number of radio link failures that occur over a period of time and compare the number to a radio link failure threshold.
  • the network connectivity preference selection circuitry 1142 may include functionality for a means for configuring a message to indicate that at least one radio frequency band is unacceptable for network connectivity.
  • the network connectivity preference selection circuitry 1142 may be configured to, in response to excessive radio links failures on one or more radio frequency bands, cause the communication and processing circuitry 1141 to send a message that includes a radio frequency band blacklist (e.g., in an information element) identifying the one or more radio frequency bands.
  • the processor 1104 may include network connection processing circuitry 1143 configured to perform network connection processing-related operations as discussed herein.
  • the network connection processing circuitry 1143 may further be configured to execute network connection processing software 1153 included on the computer-readable medium 1106 to implement one or more functions described herein.
  • the network connection processing circuitry 1143 may include functionality for a means for receiving a second message from the base station, wherein the second message configures a first connection for the user equipment according to the first network connectivity preference.
  • the network connection processing circuitry 1143 may be configured to receive an RRC Configuration message and configure the user equipment to establish a connection according to the specified RRC Configuration.
  • the network connection processing circuitry 1143 may include functionality for a means for operating in a mode of network connectivity.
  • the network connection processing circuitry 1143 may be configured to cause the communication and processing circuitry 1141 to establish a connection in a standalone mode or a non-standalone mode.
  • the network connection processing circuitry 1143 may include functionality for a means for receiving a network configuration that specifies that the user equipment is to connect to a network using at least one radio access technology in a standalone or a non-standalone mode of network connectivity.
  • the network connection processing circuitry 1143 may be configured to receive and process an RRC Configuration message from a base station.
  • FIG. 12 is a flow chart illustrating an example method 1200 for wireless communication according to some aspects. As described below, some or all illustrated features may be omitted in a particular implementation within the scope of the present disclosure, and some illustrated features may not be required for implementation of all examples. In some examples, the method 1200 may be carried out by the user equipment 1100 illustrated in FIG. 11 or by any suitable apparatus or means for carrying out the functions or algorithm described below.
  • a user equipment may transmit a first message to a base station.
  • the network connectivity preference selection circuitry 1142 together with the communication and processing circuitry 1141 and the transceiver 1110, shown and described above in connection with FIG. 11, may provide a means to transmit a first message to a base station.
  • the first message may include an indication of a first network connectivity preference of the user equipment.
  • the indication of the first network connectivity preference may specify at least one of a standalone mode of network connectivity, a non-standalone mode of network connectivity, a radio access technology, a radio frequency band, or a combination thereof.
  • the indication of the first network connectivity preference may take different forms in different examples.
  • the indication of the first network connectivity preference specifies a current preference of the user equipment to operate in the standalone mode of network connectivity and not operate in the non-standalone mode of network connectivity.
  • the indication of the first network connectivity preference specifies a current preference of the user equipment to operate in the non-standalone mode of network connectivity and not operate in the standalone mode of network connectivity.
  • the indication of the first network connectivity preference specifies a current preference of the user equipment to operate in a Multi -Radio Access Technology -Dual Connectivity (MR-DC) mode of operation.
  • MR-DC Multi -Radio Access Technology -Dual Connectivity
  • the indication of the first network connectivity preference specifies a current preference of the user equipment to operate in a Multi -Radio Access Technology -Dual Connectivity (MR-DC) mode of operation using a first radio access technology and using a second radio access technology that is different from the first radio access technology.
  • the indication of the first network connectivity preference specifies a current preference of the user equipment to connect to a first radio access technology of a plurality of radio access technologies.
  • the indication of the first network connectivity preference identifies at least one radio frequency band that the user equipment has identified as being unacceptable for network connectivity.
  • the indication of the first network connectivity preference identifies at least one radio frequency band combination for a Multi -Radio Access Technology -Dual Connectivity (MR-DC) mode of operation that the user equipment has identified as being unacceptable for network connectivity.
  • MR-DC Multi -Radio Access Technology -Dual Connectivity
  • the first message may take different forms in different examples.
  • the first message is a UE Assistance Information (UAI) message.
  • the first message is an Uplink Information Transfer Multi -Radio Access Technology -Dual Connectivity (MR-DC) message.
  • the first message is an Uplink Information Transfer Inter -Radio Access Technology (IRAT) message.
  • UAI UE Assistance Information
  • MR-DC Uplink Information Transfer Multi -Radio Access Technology -Dual Connectivity
  • IRAT Uplink Information Transfer Inter -Radio Access Technology
  • the user equipment may receive a second message from the base station.
  • the network connection processing circuitry 1143 together with the communication and processing circuitry 1141 and the transceiver 1110, shown and described above in connection with FIG. 11, may provide a means to receive a second message from the base station.
  • the second message may configure a first connection for the user equipment according to the first network connectivity preference.
  • FIG. 13 is a flow chart illustrating an example method 1300 for wireless communication according to some aspects.
  • the method 1300 may be performed in conjunction with (e.g., as part of or in addition to) the method 1200 of FIG. 12.
  • some or all illustrated features may be omitted in a particular implementation within the scope of the present disclosure, and some illustrated features may not be required for implementation of all examples.
  • the method 1300 may be carried out by the user equipment 1100 illustrated in FIG. 11 or by any suitable apparatus or means for carrying out the functions or algorithm described below.
  • a user equipment may operate in a non-standalone mode of network connectivity.
  • the network connection processing circuitry 1143 together with the communication and processing circuitry 1141 and the transceiver 1110, shown and described above in connection with FIG. 11, may provide a means to operate in a non-standalone mode of network connectivity.
  • the user equipment may detect that a power consumption of the user equipment is less than a first threshold.
  • the network connectivity preference selection circuitry 1142 shown and described above in connection with FIG. 11, may provide a means to detect that a power consumption of the user equipment is less than a first threshold.
  • the user equipment may detect that at least one data throughput of the user equipment is greater than at least one second threshold.
  • the network connectivity preference selection circuitry 1142 together with the communication and processing circuitry 1141 and the transceiver 1110, shown and described above in connection with FIG. 11, may provide a means to detect that at least one data throughput of the user equipment is greater than at least one second threshold.
  • the user equipment may configure the first message to indicate a preference for the standalone mode of network connectivity as a result of the detecting that the power consumption of the user equipment is less than the first threshold and the detecting that the at least one data throughput of the user equipment is greater than the second threshold.
  • the network connectivity preference selection circuitry 1142 shown and described above in connection with FIG. 11, may provide a means to configure the first message to indicate a preference for the standalone mode of network connectivity.
  • FIG. 14 is a flow chart illustrating an example method 1400 for wireless communication according to some aspects.
  • the method 1400 may be performed in conjunction with (e.g., as part of or in addition to) the method 1200 of FIG. 12.
  • the method 1400 may be carried out by the user equipment 1100 illustrated in FIG. 11 or by any suitable apparatus or means for carrying out the functions or algorithm described below.
  • a user equipment may operate in a standalone mode of network connectivity.
  • the network connection processing circuitry 1143 together with the communication and processing circuitry 1141 and the transceiver 1110, shown and described above in connection with FIG. 11, may provide a means to operate in a standalone mode of network connectivity.
  • the user equipment may detect that a battery power level of the user equipment is less than a threshold.
  • the network connectivity preference selection circuitry 1142 shown and described above in connection with FIG. 11, may provide a means to detect that a battery power level of the user equipment is less than a threshold.
  • the user equipment may configure the first message to indicate a preference for a first radio access technology as a result of the detecting that the battery power level of the user equipment is less than the threshold.
  • the network connectivity preference selection circuitry 1142 shown and described above in connection with FIG. 11, may provide a means to configure the first message to indicate a preference for a first radio access technology.
  • FIG. 15 is a flow chart illustrating an example method 1500 for wireless communication according to some aspects.
  • the method 1500 may be performed in conjunction with (e.g., as part of or in addition to) the method 1200 of FIG. 12.
  • the method 1500 may be carried out by the user equipment 1100 illustrated in FIG. 11 or by any suitable apparatus or means for carrying out the functions or algorithm described below.
  • a user equipment may receive a network configuration that specifies that the user equipment is to connect to a network using a first radio access technology in a standalone mode of network connectivity.
  • the network connection processing circuitry 1143 together with the communication and processing circuitry 1141 and the transceiver 1110, shown and described above in connection with FIG. 11, may provide a means to receive a network configuration that specifies that the user equipment is to connect to a network using a first radio access technology in a standalone mode of network connectivity.
  • the user equipment may detect that a radio link failure count associated with the first radio access technology exceeds a count threshold.
  • the network connectivity preference selection circuitry 1142 together with the communication and processing circuitry 1141 and the transceiver 1110, shown and described above in connection with FIG. 11, may provide a means to detect that a radio link failure count associated with the first radio access technology exceeds a count threshold.
  • the user equipment may configure the first message to indicate that at least one radio frequency band associated with the first radio access technology is unacceptable for network connectivity.
  • the network connectivity preference selection circuitry 1142 shown and described above in connection with FIG. 11, may provide a means to configure the first message to indicate that at least one radio frequency band associated with the first radio access technology is unacceptable for network connectivity.
  • FIG. 16 is a flow chart illustrating an example method 1600 for wireless communication according to some aspects.
  • the method 1600 may be performed in conjunction with (e.g., as part of or in addition to) the method 1200 of FIG. 12.
  • the method 1600 may be carried out by the user equipment 1100 illustrated in FIG. 11 or by any suitable apparatus or means for carrying out the functions or algorithm described below.
  • a user equipment may receive a network configuration that specifies that the user equipment is to connect to a network using a first radio access technology and a second radio access technology in a non-standalone mode of network connectivity.
  • the network connection processing circuitry 1143 together with the communication and processing circuitry 1141 and the transceiver 1110, shown and described above in connection with FIG. 11, may provide a means to receive a network configuration that specifies that the user equipment is to connect to a network using a first radio access technology and a second radio access technology in a non-standalone mode of network connectivity.
  • the user equipment may detect that a radio link failure count associated with at least one of the first radio access technology and the second radio access technology exceeds a count threshold.
  • the network connectivity preference selection circuitry 1142 together with the communication and processing circuitry 1141 and the transceiver 1110, shown and described above in connection with FIG. 11, may provide a means to detect that a radio link failure count associated with at least one of the first radio access technology and the second radio access technology exceeds a count threshold.
  • the user equipment may configure the first message to indicate that at least one radio frequency band combination associated with the first radio access technology and the second radio access technology is unacceptable for network connectivity.
  • the network connectivity preference selection circuitry 1142 shown and described above in connection with FIG. 11, may provide a means to configure the first message to indicate that at least one radio frequency band combination associated with the first radio access technology and the second radio access technology is unacceptable for network connectivity.
  • the UE 1100 includes means for transmitting a first message to a base station, where the first message may include an indication of a first network connectivity preference of the user equipment, and wherein the indication of the first network connectivity preference specifies at least one of a standalone mode of network connectivity, a non-standalone mode of network connectivity, a radio access technology, a radio frequency band, or a combination thereof, and means for receiving a second message from the base station, wherein the second message configures a first connection for the user equipment according to the first network connectivity preference.
  • the aforementioned means may be the processor 1104 shown in FIG. 11 configured to perform the functions recited by the aforementioned means (e.g., as discussed above) .
  • the aforementioned means may be a circuit or any apparatus configured to perform the functions recited by the aforementioned means.
  • circuitry included in the processor 1104 is merely provided as an example, and other means for carrying out the described functions may be included within various aspects of the present disclosure, including but not limited to the instructions stored in the computer-readable medium 1106, or any other suitable apparatus or means described in any one or more of FIGs. 1, 2, 4, 5, 6, 7, 8, 9, 10, and 11, and utilizing, for example, the methods and/or algorithms described herein in relation to FIGs. 12 -16.
  • FIG. 17 is a conceptual diagram illustrating an example of a hardware implementation for base station (BS) 1700 employing a processing system 1714.
  • the BS 1700 may correspond to any of the BSs (e.g., gNBs, ) or scheduling entities shown in any one or more of FIGs. 1, 2, 4, 5, 6, 7, 8, 9, and 10.
  • the processing system may include one or more processors 1704.
  • the processing system 1714 may be substantially the same as the processing system 1114 illustrated in FIG. 11, including a bus interface 1708, a bus 1702, memory 1705, a processor 1704, and a computer-readable medium 1706.
  • the memory 1705 may include network connectivity information 1715 (e.g., UE network connectivity preferences) that may be used by the processor 1704 for network connectivity operations as discussed herein.
  • the BS 1700 may include an interface 1730 (e.g., a network interface) that provides a means for communicating with at least one other apparatus within a core network and with at least one radio access network.
  • the BS 1700 may be configured to perform any one or more of the operations described herein (e.g., as described above in conjunction with FIGs. 1 -10 and as described below in conjunction with FIG. 18) .
  • the processor 1704 as utilized in the BS 1700, may include circuitry configured for various functions.
  • the processor 1704 may be configured to generate, schedule, and modify a resource assignment or grant of time-frequency resources (e.g., a set of one or more resource elements) .
  • time-frequency resources e.g., a set of one or more resource elements
  • the processor 1704 may schedule time–frequency resources within a plurality of time division duplex (TDD) and/or frequency division duplex (FDD) subframes, slots, and/or mini-slots to carry user data traffic and/or control information to and/or from multiple UEs.
  • TDD time division duplex
  • FDD frequency division duplex
  • the processor 1704 may be configured to schedule resources for the transmission of a downlink signal.
  • the downlink signal may include, for example, a PDCCH, a PDSCH, a CSI-RS, or a DMRS.
  • the processor 1704 may further be configured to schedule resources that may be utilized by the UE to transmit an uplink signal.
  • the uplink signal may include, for example, a PUCCH, a PUSCH, an SRS, a DMRS, or a physical random access channel (PRACH) .
  • PRACH physical random access channel
  • the processor 1704 may include communication and processing circuitry 1741.
  • the communication and processing circuitry 1744 may be configured to communicate with a UE.
  • the communication and processing circuitry 1741 may include one or more hardware components that provide the physical structure that performs various processes related to communication (e.g., signal reception and/or signal transmission) as described herein.
  • the communication and processing circuitry 1741 may further include one or more hardware components that provide the physical structure that performs various processes related to signal processing (e.g., processing a received signal and/or processing a signal for transmission) as described herein.
  • the communication and processing circuitry 1741 may further be configured to execute communication and processing software 1751 included on the computer-readable medium 1706 to implement one or more functions described herein.
  • the communication and processing circuitry 1741 may further be configured to interact with the transceiver 1710 to encode and transmit a downlink signal.
  • the communication and processing circuitry 1741 may further be configured to interact with the transceiver 1710 to monitor for and decode an uplink signal.
  • the communication and processing circuitry 1741 may obtain information from a component of the BS 1700 (e.g., from the transceiver 1710 that receives the information via radio frequency signaling or some other type of signaling suitable for the applicable communication medium) , process (e.g., decode) the information, and output the processed information. For example, the communication and processing circuitry 1741 may output the information to another component of the processor 1704, to the memory 1705, or to the bus interface 1708. In some examples, the communication and processing circuitry 1741 may receive one or more of signals, messages, other information, or any combination thereof. In some examples, the communication and processing circuitry 1741 may receive information via one or more channels. In some examples, the communication and processing circuitry 1741 may include functionality for a means for receiving.
  • the communication and processing circuitry 1741 may obtain information (e.g., from another component of the processor 1704, the memory 1705, or the bus interface 1708) , process (e.g., encode) the information, and output the processed information. For example, the communication and processing circuitry 1741 may output the information to the transceiver 1710 (e.g., that transmits the information via radio frequency signaling or some other type of signaling suitable for the applicable communication medium) . In some examples, the communication and processing circuitry 1741 may send one or more of signals, messages, other information, or any combination thereof. In some examples, the communication and processing circuitry 1741 may send information via one or more channels. In some examples, the communication and processing circuitry 1741 may include functionality for a means for sending (e.g., means for transmitting) .
  • the processor 1704 may include network connectivity preference processing circuitry 1742 configured to perform network connectivity preference-related operations as discussed herein.
  • the network connectivity preference processing circuitry 1742 may be configured to execute network connectivity preference processing software 1752 included on the computer-readable medium 1706 to implement one or more functions described herein.
  • the network connectivity preference processing circuitry 1742 may include functionality for a means for receiving a first message from a user equipment, where the first message may include an indication of a first network connectivity preference of the user equipment.
  • the network connectivity preference processing circuitry 1742 may be configured to receive a message (e.g., a UAI message) that includes an indication (e.g., an information element) indicating a network connectivity preference of the user equipment.
  • the processor 1704 may include network connection control circuitry 1743 configured to perform network connection control-related operations as discussed herein.
  • the network connection control circuitry 1743 may further be configured to execute network connection control software 1753 included on the computer-readable medium 1706 to implement one or more functions described herein.
  • the network connection control circuitry 1743 may include functionality for a means for transmitting a second message to the user equipment, where the second message configures a first connection for the user equipment according to the first network connectivity preference.
  • the network connection control circuitry 1743 may be configured to cause the communication and processing circuitry 1741 to transmit an RRC Configuration message to the user equipment.
  • the network connection control circuitry 1743 may include functionality for a means for configuring a connection for the user equipment.
  • the network connection control circuitry 1743 may be configured to identify the best cell or cells for serving the user equipment and generate an RRC Configuration message and other messages to configure a network connection to the identified cell (s) for the user equipment.
  • the network connection control circuitry 1743 may include functionality for a means for transmitting a network configuration that specifies that the user equipment is to connect to a network using at least one radio access technology in a standalone or a non-standalone mode of network connectivity.
  • the network connection control circuitry 1743 may be configured to generate an RRC Configuration message including the specified configuration.
  • FIG. 18 is a flow chart illustrating an example method 1800 for wireless communication according to some aspects. As described below, some or all illustrated features may be omitted in a particular implementation within the scope of the present disclosure, and some illustrated features may not be required for implementation of all examples. In some examples, the method 1800 may be carried out by the BS 1700 illustrated in FIG. 17 or by any suitable apparatus or means for carrying out the functions or algorithm described below.
  • a base station may receive a first message from a user equipment.
  • the network connectivity preference processing circuitry 1742 together with the communication and processing circuitry 1741 and the transceiver 1710, shown and described above in connection with FIG. 17, may provide a means to receive a first message from a user equipment.
  • the first message may include an indication of a first network connectivity preference of the user equipment.
  • the indication of the first network connectivity preference may specify at least one of a standalone mode of network connectivity, a non-standalone mode of network connectivity, a radio access technology, a radio frequency band, or a combination thereof.
  • the indication of the first network connectivity preference may take different forms in different examples.
  • the indication of the first network connectivity preference specifies a current preference of the user equipment to operate in the standalone mode of network connectivity and not operate in the non-standalone mode of network connectivity.
  • the indication of the first network connectivity preference specifies a current preference of the user equipment to operate in the non-standalone mode of network connectivity and not operate in the standalone mode of network connectivity.
  • the indication of the first network connectivity preference specifies a current preference of the user equipment to operate in a Multi -Radio Access Technology -Dual Connectivity (MR-DC) mode of operation.
  • MR-DC Multi -Radio Access Technology -Dual Connectivity
  • the indication of the first network connectivity preference specifies a current preference of the user equipment to operate in a Multi -Radio Access Technology -Dual Connectivity (MR-DC) mode of operation using a first radio access technology and using a second radio access technology that is different from the first radio access technology.
  • the indication of the first network connectivity preference specifies a current preference of the user equipment to connect to a first radio access technology of a plurality of radio access technologies.
  • the indication of the first network connectivity preference identifies at least one radio frequency band that the user equipment has identified as being unacceptable for network connectivity.
  • the indication of the first network connectivity preference identifies at least one radio frequency band combination for a Multi -Radio Access Technology -Dual Connectivity (MR-DC) mode of operation that the user equipment has identified as being unacceptable for network connectivity.
  • MR-DC Multi -Radio Access Technology -Dual Connectivity
  • the first message may take different forms in different examples.
  • the first message is a UE Assistance Information (UAI) message.
  • the first message is an Uplink Information Transfer Multi -Radio Access Technology -Dual Connectivity (MR-DC) message.
  • the first message is an Uplink Information Transfer Inter -Radio Access Technology (IRAT) message.
  • UAI UE Assistance Information
  • MR-DC Uplink Information Transfer Multi -Radio Access Technology -Dual Connectivity
  • IRAT Uplink Information Transfer Inter -Radio Access Technology
  • the base station may transmit a second message to the user equipment.
  • the network connection control circuitry 1743 together with the communication and processing circuitry 1741 and the transceiver 1710, shown and described above in connection with FIG. 17, may provide a means to transmit a second message to the user equipment.
  • the second message may configure a first connection for the user equipment according to the first network connectivity preference.
  • the BS 1700 includes means for receiving a first message from a user equipment, wherein the first message may include an indication of a first network connectivity preference of the user equipment, and wherein the indication of the first network connectivity preference specifies at least one of a standalone mode of network connectivity, a non-standalone mode of network connectivity, a radio access technology, a radio frequency band, or a combination thereof, and means for transmitting a second message to the user equipment, wherein the second message configures a first connection for the user equipment according to the first network connectivity preference.
  • the aforementioned means may be the processor 1704 shown in FIG. 17 configured to perform the functions recited by the aforementioned means (e.g., as discussed above) .
  • the aforementioned means may be a circuit or any apparatus configured to perform the functions recited by the aforementioned means.
  • circuitry included in the processor 1704 is merely provided as an example, and other means for carrying out the described functions may be included within various aspects of the present disclosure, including but not limited to the instructions stored in the computer-readable medium 1706, or any other suitable apparatus or means described in any one or more of FIGs. 1, 2, 4, 5, 6, 7, 8, 9, 10, and 17, and utilizing, for example, the methods and/or algorithms described herein in relation to FIG. 18.
  • FIGs. 12 -16 and 18 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.
  • the following provides an overview of several aspects of the present disclosure.
  • a method for wireless communication at a user equipment comprising: transmitting a first message to a base station, wherein the first message comprises an indication of a first network connectivity preference of the user equipment, and wherein the indication of the first network connectivity preference specifies at least one of: a standalone mode of network connectivity, a non-standalone mode of network connectivity, a radio access technology, a radio frequency band, or a combination thereof; and receiving a second message from the base station, wherein the second message configures a first connection for the user equipment according to the first network connectivity preference.
  • Aspect 2 The method of aspect 1, wherein the indication of the first network connectivity preference specifies a current preference of the user equipment to operate in the standalone mode of network connectivity and not operate in the non-standalone mode of network connectivity.
  • Aspect 3 The method of aspect 1, wherein the indication of the first network connectivity preference specifies a current preference of the user equipment to operate in the non-standalone mode of network connectivity and not operate in the standalone mode of network connectivity.
  • Aspect 4 The method of any of aspects 1 through 3, wherein the indication of the first network connectivity preference specifies a current preference of the user equipment to operate in a Multi -Radio Access Technology -Dual Connectivity (MR-DC) mode of operation.
  • MR-DC Multi -Radio Access Technology -Dual Connectivity
  • Aspect 5 The method of any of aspects 1 through 3, wherein the indication of the first network connectivity preference specifies a current preference of the user equipment to operate in a Multi -Radio Access Technology -Dual Connectivity (MR-DC) mode of operation using a first radio access technology and using a second radio access technology that is different from the first radio access technology.
  • MR-DC Multi -Radio Access Technology -Dual Connectivity
  • Aspect 6 The method of any of aspects 1 through 5, wherein the indication of the first network connectivity preference specifies a current preference of the user equipment to connect to a first radio access technology of a plurality of radio access technologies.
  • Aspect 7 The method of any of aspects 1 through 6, wherein the indication of the first network connectivity preference identifies at least one radio frequency band that the user equipment has identified as being unacceptable for network connectivity.
  • Aspect 8 The method of any of aspects 1 through 7, wherein the indication of the first network connectivity preference identifies at least one radio frequency band combination for a Multi -Radio Access Technology -Dual Connectivity (MR-DC) mode of operation that the user equipment has identified as being unacceptable for network connectivity.
  • MR-DC Multi -Radio Access Technology -Dual Connectivity
  • Aspect 9 The method of any of aspects 1 through 8, wherein the first message comprises a User Equipment Assistance Information (UAI) message, an Uplink Information Transfer Multi -Radio Access Technology -Dual Connectivity (MR-DC) message, or an Uplink Information Transfer Inter -Radio Access Technology (IRAT) message.
  • UAI User Equipment Assistance Information
  • MR-DC Uplink Information Transfer Multi -Radio Access Technology -Dual Connectivity
  • IRAT Uplink Information Transfer Inter -Radio Access Technology
  • Aspect 10 The method of any of aspects 1 through 9, further comprising: operating in the non-standalone mode of network connectivity; detecting that a power consumption of the user equipment is less than a first threshold; detecting that at least one data throughput of the user equipment is greater than at least one second threshold; and configuring the first message to indicate a preference for the standalone mode of network connectivity as a result of the detecting that the power consumption of the user equipment is less than the first threshold and the detecting that the at least one data throughput of the user equipment is greater than the second threshold.
  • Aspect 11 The method of aspect 10, wherein the detecting that the at least one data throughput of the user equipment is greater than the at least one second threshold comprises: detecting that an uplink data throughput of the user equipment is greater than an uplink threshold; and detecting that a downlink data throughput of the user equipment is greater than a downlink threshold.
  • Aspect 12 The method of any of aspects 1 through 11, further comprising: operating in the standalone mode of network connectivity; detecting that a battery power level of the user equipment is less than a threshold; and configuring the first message to indicate a preference for a first radio access technology as a result of the detecting that the battery power level of the user equipment is less than the threshold.
  • Aspect 13 The method of any of aspects 1 through 12, further comprising: receiving a network configuration that specifies that the user equipment is to connect to a network using a first radio access technology in the standalone mode of network connectivity; detecting that a radio link failure count associated with the first radio access technology exceeds a count threshold; and configuring the first message to indicate that at least one radio frequency band associated with the first radio access technology is unacceptable for network connectivity.
  • Aspect 14 The method of any of aspects 1 through 13, further comprising: receiving a network configuration that specifies that the user equipment is to connect to a network using a first radio access technology and a second radio access technology in the non-standalone mode of network connectivity; detecting that a radio link failure count associated with at least one of the first radio access technology and the second radio access technology exceeds a count threshold; and configuring the first message to indicate that at least one radio frequency band combination associated with the first radio access technology and the second radio access technology is unacceptable for network connectivity.
  • a method for wireless communication at a base station comprising: receiving a first message from a user equipment, wherein the first message comprises an indication of a first network connectivity preference of the user equipment, and wherein the indication of the first network connectivity preference specifies at least one of: a standalone mode of network connectivity, a non-standalone mode of network connectivity, a radio access technology, a radio frequency band, or a combination thereof; and transmitting a second message to the user equipment, wherein the second message configures a first connection for the user equipment according to the first network connectivity preference.
  • Aspect 17 The method of aspect 16, wherein the indication of the first network connectivity preference specifies a current preference of the user equipment to operate in the standalone mode of network connectivity and not operate in the non-standalone mode of network connectivity.
  • Aspect 18 The method of aspect 16, wherein the indication of the first network connectivity preference specifies a current preference of the user equipment to operate in the non-standalone mode of network connectivity and not operate in the standalone mode of network connectivity.
  • Aspect 19 The method of any of aspects 16 through 18, wherein the indication of the first network connectivity preference specifies a current preference of the user equipment to connect to a first radio access technology of a plurality of radio access technologies.
  • Aspect 20 The method of any of aspects 16 through 19, wherein the indication of the first network connectivity preference identifies at least one radio frequency band that the user equipment has identified as being unacceptable for network connectivity.
  • a user equipment comprising: a transceiver configured to communicate with a radio access network, a memory, and a processor communicatively coupled to the transceiver and the memory, wherein the processor and the memory are configured to perform any one of aspects 1 through 14.
  • Aspect 22 An apparatus configured for wireless communication comprising at least one means for performing any one of aspects 1 through 14.
  • Aspect 23 A non-transitory computer-readable medium storing computer-executable code, comprising code for causing an apparatus to perform any one of aspects 1 through 14.
  • a base station comprising: a transceiver, a memory, and a processor communicatively coupled to the transceiver and the memory, wherein the processor and the memory are configured to perform any one of aspects 16 through 20.
  • Aspect 25 An apparatus configured for wireless communication comprising at least one means for performing any one of aspects 16 through 20.
  • Aspect 26 A non-transitory computer-readable medium storing computer-executable code, comprising code for causing an apparatus to perform any one of aspects 16 through 20.
  • various aspects may be implemented within other systems defined by 3GPP, such as Long-Term Evolution (LTE) , the Evolved Packet System (EPS) , the Universal Mobile Telecommunication System (UMTS) , and/or the Global System for Mobile (GSM) .
  • LTE Long-Term Evolution
  • EPS Evolved Packet System
  • UMTS Universal Mobile Telecommunication System
  • GSM Global System for Mobile
  • Various aspects may also be extended to systems defined by the 3rd Generation Partnership Project 2 (3GPP2) , such as CDMA2000 and/or Evolution-Data Optimized (EV-DO) .
  • 3GPP2 3rd Generation Partnership Project 2
  • EV-DO Evolution-Data Optimized
  • Other examples may be implemented within systems employing Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi) , IEEE 802.16 (WiMAX) , IEEE 802.20, Ultra-Wideband (UWB) , Bluetooth, and/or other suitable systems.
  • IEEE Institute of
  • the word “exemplary” is used to mean “serving as an example, instance, or illustration. ” Any implementation or aspect described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other aspects of the disclosure. Likewise, the term “aspects” does not require that all aspects of the disclosure include the discussed feature, advantage or mode of operation.
  • the term “coupled” is used herein to refer to the direct or indirect coupling between two objects. For example, if object A physically touches object B, and object B touches object C, then objects A and C may still be considered coupled to one another-even if they do not directly physically touch each other. For instance, a first object may be coupled to a second object even though the first object is never directly physically in contact with the second object.
  • circuit and “circuitry” are used broadly, and intended to include both hardware implementations of electrical devices and conductors that, when connected and configured, enable the performance of the functions described in the present disclosure, without limitation as to the type of electronic circuits, as well as software implementations of information and instructions that, when executed by a processor, enable the performance of the functions described in the present disclosure.
  • determining may include, for example, ascertaining, resolving, selecting, choosing, establishing, calculating, computing, processing, deriving, investigating, looking up (e.g., looking up in a table, a database or another data structure) , and the like. Also, “determining” may include receiving (e.g., receiving information) , accessing (e.g., accessing data in a memory) , and the like.
  • FIGs. 1 -18 may be rearranged and/or combined into a single component, step, feature or function or embodied in several components, steps, or functions. Additional elements, components, steps, and/or functions may also be added without departing from novel features disclosed herein.
  • the apparatus, devices, and/or components illustrated in FIGs. 1, 2, 4, 5, 6, 7, 8, 9, 10, 11, and 17 may be configured to perform one or more of the methods, features, or steps described herein.
  • the novel algorithms described herein may also be efficiently implemented in software and/or embedded in hardware.
  • “at least one of: a, b, or c” is intended to cover: a; b; c; a and b; a and c; b and c; and a, b, and c. All structural and functional equivalents to the elements of the various aspects described throughout this disclosure that are known or later come to be known to those of ordinary skill in the art are expressly incorporated herein by reference and are intended to be encompassed by the claims. Moreover, nothing disclosed herein is intended to be dedicated to the public regardless of whether such disclosure is explicitly recited in the claims.

Abstract

Des aspects concernent un équipement utilisateur (UE) qui envoie une indication d'une préférence de connectivité de réseau à une station de base. Par exemple, l'UE peut transmettre un message qui indique que l'UE préfère fonctionner dans un mode de fonctionnement autonome ou qui indique que l'UE préfère fonctionner dans un mode de fonctionnement non autonome. Dans un autre exemple, l'UE peut transmettre un message qui indique que l'UE préfère se connecter à une première technologie d'accès radio (RAT) ou qui indique que l'UE préfère se connecter à une seconde RAT. Lors de la réception d'un message indiquant une préférence de connectivité de réseau d'UE, une station de base peut configurer l'UE avec la connectivité de réseau demandée.
PCT/CN2021/110241 2021-08-03 2021-08-03 Préférence de connectivité de réseau d'équipement utilisateur WO2023010271A1 (fr)

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US20200314836A1 (en) * 2019-03-28 2020-10-01 Apple Inc. Assistance Information for Fast Carrier Aggregation and Dual Connectivity Configuration
US20200323005A1 (en) * 2019-04-02 2020-10-08 Qualcomm Incorporated Radio access technology ping-pong reselection and registration avoidance
CN111885681A (zh) * 2019-05-02 2020-11-03 苹果公司 智能核心网络选择
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US20200314836A1 (en) * 2019-03-28 2020-10-01 Apple Inc. Assistance Information for Fast Carrier Aggregation and Dual Connectivity Configuration
US20200323005A1 (en) * 2019-04-02 2020-10-08 Qualcomm Incorporated Radio access technology ping-pong reselection and registration avoidance
CN111885681A (zh) * 2019-05-02 2020-11-03 苹果公司 智能核心网络选择
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