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WO2025235790A1 - Transmission d'un signal de référence de sondage avec compensation de perte d'insertion - Google Patents

Transmission d'un signal de référence de sondage avec compensation de perte d'insertion

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Publication number
WO2025235790A1
WO2025235790A1 PCT/US2025/028454 US2025028454W WO2025235790A1 WO 2025235790 A1 WO2025235790 A1 WO 2025235790A1 US 2025028454 W US2025028454 W US 2025028454W WO 2025235790 A1 WO2025235790 A1 WO 2025235790A1
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Prior art keywords
srs
transmission
ran
network
data
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English (en)
Inventor
Andrey Chervyakov
Meng Zhang
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Intel Corp
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Intel Corp
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Publication of WO2025235790A1 publication Critical patent/WO2025235790A1/fr
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Definitions

  • 5G NR (and beyond) networks will continue to evolve based on 3 GPP LTE- Advanced with additional potential new radio access technologies (RATs) to enrich people’s lives with seamless wireless connectivity solutions, delivering fast, rich content and services.
  • RATs new radio access technologies
  • mmWave millimeter wave
  • FIG. 1 A illustrates the architecture of a network, in accordance with some aspects.
  • FIG. IB and FIG. 1C illustrate a non-roaming 5G system architecture, in accordance with some aspects.
  • FIG. 2, FIG. 3, FIG. 4, and FIG. 5 illustrate various systems, architectures, devices, and components that may implement aspects of disclosed embodiments.
  • FIG. 6 illustrates an example artificial intelligence (Al)-assisted communication architecture for communication between a UE and a RAN, in accordance with some aspects.
  • FIG. 7 illustrates an example RAN split architecture, in accordance with some aspects.
  • FIG. 8 illustrates a diagram of an SRS antenna port (AP) switching procedure, in accordance with some aspects.
  • FIG. 9 and FIG. 10 illustrate graphs of SRS transmission power levels and effective SRS AP power imbalances, in accordance with some aspects.
  • FIG. 11 illustrates a block diagram of a communication device such as an evolved Node-B (eNB), a new generation Node-B (gNB) (or another RAN node), an NCR, an access point (AP), a wireless station (STA), a mobile station (MS), or user equipment (UE), in accordance with some aspects.
  • eNB evolved Node-B
  • gNB new generation Node-B
  • NCR NCR
  • AP access point
  • STA wireless station
  • MS mobile station
  • UE user equipment
  • FIG. 1 A - FIG. 11 illustrate various systems, devices, and components that may implement aspects of disclosed embodiments in different communication systems, such as LTE (EUTRA) and 5G-NR (and beyond) networks.
  • UEs, base stations (such as gNBs), and/or other nodes (e.g., satellites or other computing nodes) discussed herein can be configured to perform the disclosed techniques.
  • FIG. 1 A illustrates the architecture of a network in accordance with some aspects.
  • the communication network 140A is shown to include user equipment (UE) 101 and UE 102.
  • the UE 101 and UE 102 are illustrated as smartphones (e.g., handheld touchscreen mobile computing devices connectable to one or more cellular networks) but may also include any mobile or non- mobile computing device, such as Personal Data Assistants (PDAs), pagers, laptop computers, desktop computers, wireless handsets, drones, or any other computing device including a wired and/or wireless communications interface.
  • PDAs Personal Data Assistants
  • UE 101 and UE 102 can be collectively referred to herein as UE 101, and UE 101 can be used to perform one or more of the techniques disclosed herein.
  • Any of the radio links described herein may operate according to any exemplary radio communication technology and/or standard.
  • LTE and LTE- Advanced are standards for wireless communications of high-speed data for UE, such as mobile telephones.
  • carrier aggregation is a technology according to which multiple carrier signals operating on different frequencies may be used to carry communications for a single UE, thus increasing the bandwidth available to a single device.
  • carrier aggregation may be used where one or more component carriers operate on unlicensed frequencies.
  • aspects described herein can be used in the context of any spectrum management scheme, including, for example, dedicated licensed spectrum, unlicensed spectrum, (licensed) shared spectrum (such as Licensed Shared Access (LSA) in 2.3-2.4 GHz, 3.4-3.6 GHz, 3.6-3.8 GHz, and further frequencies and Spectrum Access System (SAS) in 3.55-3.7 GHz and further frequencies).
  • LSA Licensed Shared Access
  • SAS Spectrum Access System
  • any of the UE 101 and UE 102 can include an Internet-of-Things (loT) UE or a Cellular loT (CIoT) UE, which can include a network access layer designed for low-power loT applications utilizing shortlived UE connections.
  • any of the UE 101 and UE 102 can include a narrowband (NB) loT UE (e.g., an enhanced NB-IoT (eNB-IoT) UE and Further Enhanced (FeNB-IoT) UE).
  • NB narrowband
  • eNB-IoT enhanced NB-IoT
  • FeNB-IoT Further Enhanced
  • An loT UE can utilize technologies such as machine-to-machine (M2M) or machine-type communications (MTC) for exchanging data with an MTC server or device via a public land mobile network (PLMN), Proximity-Based Service (ProSe) or device-to-device (D2D) communication, sensor networks, or loT networks.
  • M2M or MTC exchange of data may be a machine-initiated exchange of data.
  • An loT network includes interconnecting loT UEs, which may include uniquely identifiable embedded computing devices (within the Internet infrastructure) with short-lived connections.
  • the loT UEs may execute background applications (e.g., keepalive messages, status updates, etc.) to facilitate the connections of the loT network.
  • any of the UE 101 and UE 102 can include enhanced MTC (eMTC) UEs or further enhanced MTC (FeMTC) UEs.
  • eMTC enhanced MTC
  • FeMTC enhanced MTC
  • the UE 101 and UE 102 may be configured to connect, e.g., communicatively coupled, with a radio access network (RAN) 110.
  • the RAN 110 may be, for example, a Universal Mobile Telecommunications System (UMTS), an Evolved Universal Terrestrial Radio Access Network (E-UTRAN), a NextGen RAN (NG RAN), or some other type of RAN.
  • UMTS Universal Mobile Telecommunications System
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • NG RAN NextGen RAN
  • the UE 101 and UE 102 utilize connections 103 and 104, respectively, each of which includes a physical communications interface or layer (discussed in further detail below); in this example, the connections 103 and 104 are illustrated as an air interface to enable communicative coupling and can be consistent with cellular communications protocols, such as a Global System for Mobile Communications (GSM) protocol, a code-division multiple access (CDMA) network protocol, a Push-to-Talk (PTT) protocol, a PTT over Cellular (POC) protocol, a Universal Mobile Telecommunications System (UMTS) protocol, a 3GPP Long Term Evolution (LTE) protocol, a fifth-generation (5G) protocol, a New Radio (NR) protocol, and the like.
  • GSM Global System for Mobile Communications
  • CDMA code-division multiple access
  • PTT Push-to-Talk
  • POC PTT over Cellular
  • UMTS Universal Mobile Telecommunications System
  • LTE Long Term Evolution
  • 5G fifth-generation
  • NR New Radio
  • the UE 101 and UE 102 may further directly exchange communication data via a ProSe interface 105.
  • the ProSe interface 105 may alternatively be referred to as a sidelink interface comprising one or more logical channels, including but not limited to a Physical Sidelink Control Channel (PSCCH), a Physical Sidelink Shared Channel (PSSCH), a Physical Sidelink Discovery Channel (PSDCH), and a Physical Sidelink Broadcast Channel (PSBCH).
  • PSCCH Physical Sidelink Control Channel
  • PSSCH Physical Sidelink Shared Channel
  • PSDCH Physical Sidelink Discovery Channel
  • PSBCH Physical Sidelink Broadcast Channel
  • the UE 102 is shown to be configured to access an access point (AP) 106 via connection 107.
  • the connection 107 can include a local wireless connection, such as, for example, a connection consistent with any IEEE 802.11 protocol, according to which the AP 106 can include a wireless fidelity (WiFi®) router.
  • WiFi® wireless fidelity
  • the AP 106 is shown to be connected to the Internet without connecting to the core network of the wireless system (described in further detail below).
  • the RAN 110 can include one or more access nodes that enable connections 103 and 104.
  • These access nodes can be referred to as base stations (BSs), NodeBs, evolved NodeBs (eNBs), Next Generation NodeBs (gNBs), RAN network nodes, and the like, and can include ground stations (e.g., terrestrial access points) or satellite stations providing coverage within a geographic area (e.g., a cell).
  • communication nodes 111 and 112 can be transmission/reception points (TRPs). In instances when the communication nodes 111 and 112 are NodeBs (e.g., eNBs or gNBs), one or more TRPs can function within the communication cell of the NodeBs.
  • TRPs transmission/reception points
  • the RAN 110 may include one or more RAN nodes for providing macrocells, e.g., macro RAN nodes, and one or more RAN nodes for providing femtocells or picocells (e.g., cells having smaller coverage areas, smaller user capacity, or higher bandwidth compared to macrocells), e.g., low power (LP) RAN node or an unlicensed spectrum based secondary RAN node.
  • macro RAN nodes e.g., macro RAN nodes
  • femtocells or picocells e.g., cells having smaller coverage areas, smaller user capacity, or higher bandwidth compared to macrocells
  • LP low power
  • any of the communication nodes 111 and 112 can terminate the air interface protocol and can be the first point of contact for UE 101 and UE 102.
  • any of the communication nodes 111 and 112 can fulfill various logical functions for the RAN 110, including, but not limited to, the radio network controller (RNC) functions such as radio bearer management, uplink, and downlink dynamic radio resource management, and data packet scheduling, and mobility management.
  • RNC radio network controller
  • any of the communication nodes 111 and/or 112 can be a new generation Node-B (gNB), an evolved node-B (eNB), or another type of RAN node.
  • gNB Node-B
  • eNB evolved node-B
  • the RAN 110 is shown to be communicatively coupled to a core network (CN) 120 via an SI interface 113.
  • the CN 120 may be an evolved packet core (EPC) network, a NextGen Packet Core (NPC) network, or some other type of CN (e.g., as illustrated in FIGS. 1B-1C).
  • EPC evolved packet core
  • NPC NextGen Packet Core
  • the SI interface 113 is split into two parts: the Sl-U interface 114, which carries user traffic data between the communication nodes 111 and 112 and the serving gateway (S-GW) 122, and the SI -mobility management entity (MME) interface 115, which is a signaling interface between the communication nodes 111 and 112 and MMEs 121.
  • S-GW serving gateway
  • MME SI -mobility management entity
  • the CN 120 comprises the MMEs 121, the S-GW 122, the Packet Data Network (PDN) Gateway (P-GW) 123, and a home subscriber server (HSS) 124.
  • the MMEs 121 may be similar in function to the control plane of legacy Serving General Packet Radio Service (GPRS) Support Nodes (SGSN).
  • the MMEs 121 may manage mobility aspects in access, such as gateway selection and tracking area list management.
  • the HSS 124 may comprise a database for network users, including subscription-related information to support the network entities' handling of communication sessions.
  • the CN 120 may comprise one or several HSSs 124, depending on the number of mobile subscribers, the capacity of the equipment, the organization of the network, etc.
  • the HSS 124 can provide support for routing/roaming, authentication, authorization, naming/addressing resolution, location dependencies, etc.
  • the S-GW 122 may terminate the SI interface 113 towards the RAN 110 and route data packets between the RAN 110 and the CN 120.
  • the S-GW 122 may be a local mobility anchor point for inter-RAN node handovers and may also provide an anchor for inter-3GPP mobility. Other responsibilities of the S-GW 122 may include lawful intercept, charging, and some policy enforcement.
  • the P-GW 123 may terminate an SGi interface toward a PDN.
  • the P-GW 123 may route data packets between the EPC network (e.g., CN 120) and external networks such as a network including the application server 184 (alternatively referred to as application function (AF)) via an Internet Protocol (IP) interface 125.
  • the P-GW 123 can also communicate data to other external networks 131 A, which can include the Internet, IP multimedia subsystem (IPS) network, and other networks.
  • the application server 184 may be an element offering applications that use IP bearer resources with the core network (e.g., UMTS Packet Services (PS) domain, LTE PS data services, etc.).
  • PS UMTS Packet Services
  • the P-GW 123 is shown to be communicatively coupled to an application server 184 via an IP interface 125.
  • the application server 184 can also be configured to support one or more communication services (e.g., Voice-over- Internet Protocol (VoIP) sessions, PTT sessions, group communication sessions, social networking services, etc.) for the UE 101 and UE 102 via the CN 120.
  • VoIP Voice-over- Internet Protocol
  • the P-GW 123 may further be a node for policy enforcement and charging data collection.
  • Policy and Charging Rules Function (PCRF) 126 is the policy and charging control element of the CN 120.
  • PCRF Policy and Charging Rules Function
  • HPLMN Home Public Land Mobile Network
  • IP-CAN Internet Protocol Connectivity Access Network
  • the PCRF 126 may be communicatively coupled to the application server 184 via the P-GW 123.
  • the communication network 140 A can be an loT network or a 5G network, including a 5G new radio network using communications in the licensed (5GNR) and the unlicensed (5GNR-U) spectrum.
  • NB-IoT narrowband loT
  • An NG system architecture can include the RAN 110 and a 5G core network (e.g., CN 120).
  • RAN 110 in an NG system can be referred to as NG- RAN.
  • the RAN 110 can include a plurality of nodes, such as gNBs and NG- eNBs.
  • the CN 120 (also referred to as a 5G core network or 5GC) can include an access and mobility function (AMF) and/or a user plane function (UPF).
  • the AMF and the UPF can be communicatively coupled to the gNBs and the NG- eNBs via NG interfaces. More specifically, in some aspects, the gNBs and the NG-eNBs can be connected to the AMF by NG-C interfaces and the UPF by NG-U interfaces.
  • the gNBs and the NG-eNBs can be coupled to each other via Xn interfaces.
  • the NG system architecture can use reference points between various nodes as provided by 3GPP Technical Specification (TS) 23.501 (e.g., VI 5.4.0, 2018-12).
  • TS 3GPP Technical Specification
  • each of the gNBs and the NG- eNBs can be implemented as a base station, a mobile edge server, a small cell, a home eNB, a RAN network node, and so forth.
  • a gNB can be a master node (MN), and NG-eNB can be a secondary node (SN) in a 5G architecture.
  • the master/primary node may operate in a licensed band, and the secondary node may operate in an unlicensed band.
  • FIG. IB illustrates a non-roaming 5G system architecture in accordance with some aspects.
  • a 5G system architecture 140B in a reference point representation. More specifically, UE 102 can be in communication with RAN 110 as well as one or more other 5G core (5GC) network entities.
  • 5GC 5G core
  • the 5G system architecture 140B includes a plurality of network functions (NFs), such as access and mobility management function (AMF) 132, location management function (LMF) 133, session management function (SMF) 136, policy control function (PCF) 148, application function (AF) 150, user plane function (UPF) 134, network slice selection function (NSSF) 142, authentication server function (AUSF) 144, and unified data management (UDM)/home subscriber server (HSS) 146.
  • the UPF 134 can provide a connection to a data network (DN) 152, which can include, for example, operator services, Internet access, or third-party services.
  • DN data network
  • the AMF 132 can be used to manage access control and mobility and can also include network slice selection functionality.
  • the SMF 136 can be configured to set up and manage various sessions according to network policy.
  • the UPF 134 can be deployed in one or more configurations according to the desired service type.
  • the PCF 148 can be configured to provide a policy framework using network slicing, mobility management, and roaming (similar to PCRF in a 4G communication system).
  • the UDM can be configured to store subscriber profiles and data (similar to an HSS in a 4G communication system).
  • the LMF 133 may be used in connection with 5G positioning functionalities.
  • LMF 133 receives measurements and assistance information from the RAN 110 and the mobile device (e.g., UE 101) via the AMF 132 over the NLs interface to compute the position of the UE 101.
  • NR positioning protocol A (NRPPa) may be used to carry the positioning information between NG-RAN and LMF 133 over a next-generation control plane interface (NG-C).
  • LMF 133 configures the UE using the LTE positioning protocol (LPP) via AMF 132.
  • the RAN 110 configures the UE 101 using radio resource control (RRC) protocol over LTE- Uu and NR-Uu interfaces.
  • RRC radio resource control
  • the 5G system architecture 140B configures different reference signals to enable positioning measurements.
  • Example reference signals that may be used for positioning measurements include the positioning reference signal (NR PRS) in the downlink and the sounding reference signal (SRS) for positioning in the uplink.
  • the downlink positioning reference signal (PRS) is a reference signal configured to support downlink-based positioning methods.
  • the 5G system architecture 140B includes an IP multimedia subsystem (IMS) 168B as well as a plurality of IP multimedia core network subsystem entities, such as call session control functions (CSCFs). More specifically, the IMS 168B includes a CSCF, which can act as a proxy CSCF (P-CSCF) 162BE, a serving CSCF (S-CSCF) 164B, an emergency CSCF (E-CSCF) (not illustrated in FIG. IB), or interrogating CSCF (LCSCF) 166B.
  • P-CSCF 162B can be configured to be the first contact point for the UE 102 within the IMS 168B.
  • the S-CSCF 164B can be configured to handle the session states in the network, and the E-CSCF can be configured to handle certain aspects of emergency sessions, such as routing an emergency request to the correct emergency center or PSAP.
  • the I-CSCF 166B can be configured to function as the contact point within an operator's network for all IMS connections destined to a subscriber of that network operator or a roaming subscriber currently located within that network operator's service area.
  • the I-CSCF 166B can be connected to another IP multimedia network 170, e.g., an IMS operated by a different network operator.
  • the UDM/HSS 146 can be coupled to an application server (AS) 160B, which can include a telephony application server (TAS) or another AS.
  • AS 160B can be coupled to the IMS 168B via the S-CSCF 164B or the I-CSCF 166B.
  • FIG. IB illustrates the following reference points: N1 (between the UE 102 and the AMF 132), N2 (between the RAN 110 and the AMF 132), N3 (between the RAN 110 and the UPF 134), N4 (between the SMF 136 and the UPF 134), N5 (between the PCF 148 and the AF 150, not shown), N6 (between the UPF 134 and the DN 152), N7 (between the SMF 136 and the PCF 148, not shown), N8 (between the UDM/HSS 146 and the AMF 132, not shown), N9 (between two UPFs, not shown), N10 (between the UDM/HSS 146 and the SMF 136, not shown), Ni l (between the AMF 132 and the SMF 136, not shown), N12 (between the AUSF 144 and the AMF 132, not shown), N13 (between the AUSF 144
  • FIG. 1C illustrates a 5G system architecture 140C and a service-based representation.
  • the 5G system architecture 140C can also include a network exposure function (NEF) 154 and a network repository function (NRF) 156.
  • NEF network exposure function
  • NRF network repository function
  • 5G system architectures can be service-based, and interaction between network functions can be represented by corresponding point-to-point reference points Ni or as service-based interfaces.
  • service-based representations can be used to represent network functions within the control plane that enable other authorized network functions to access their services.
  • 5G system architecture 140C can include the following servicebased interfaces: Namf 158H (a service-based interface exhibited by the AMF 132), Nsmf 1581 (a service-based interface exhibited by the SMF 136), Nnef 158B (a service-based interface exhibited by the NEF 154), Npcf 158D (a service-based interface exhibited by the PCF 148), a Nudm 158E (a servicebased interface exhibited by the UDM/HSS 146), Naf 158F (a service-based interface exhibited by the AF 150), Nnrf 158C (a service-based interface exhibited by the NRF 156), Nnssf 158A (a service-based interface exhibited by the NSSF 142), Nausf 158G (a service-based interface exhibited by the AU
  • FIG. 2 depicts an example network architecture 200.
  • the network architecture 200 may operate in a manner consistent with 3GPP technical specifications for LTE or 5G/NR systems and can implement the disclosed techniques (e.g., the disclosed techniques can be configured/implemented by one or more devices operating within the network architecture 200).
  • the example embodiments are not limited in this regard, and the described examples may apply to other networks that benefit from the principles described herein, such as future 3 GPP systems or the like.
  • the network architecture 200 includes a UE 202, which is any mobile or non-mobile computing device designed to communicate with a RAN 204 via an over-the-air connection.
  • the UE 202 is communicatively coupled with the RAN 204 by a Uu interface, which may be applicable to both LTE and NR systems.
  • Examples of the UE 202 include, but are not limited to, a smartphone, tablet computer, wearable device (e.g., smart watch, fitness tracker, smart glasses, smart clothing/fabrics, head-mounted displays, smart shows, and/or the like), desktop computer, workstation, laptop computer, in-vehicle infotainment system, in-car entertainment system, instrument cluster, head-up display (HUD) device, onboard diagnostic device, dashtop mobile equipment, mobile data terminal, electronic engine management system, electronic/engine control unit, electronic/engine control module, embedded system, sensor, microcontroller, control module, engine management system, networked appliance, machine-type communication device, machine-to-machine (M2M), device-to-device (D2D), machine-type communication (MTC) device, Internet of Things (loT) device, smart appliance, flying drone or unmanned aerial vehicle (UAV), terrestrial drone or autonomous vehicle, robot, electronic signage, single-board computer (SBC) (e.g., Raspberry Pi, iOS, Intel Edison, and the like
  • the UE 202 can be a reduced capability (RedCap) UE, which is a UE with reduced capabilities as specified in clause 4.2.21.1 in 3GPP TS 38.306 vl7.4.0 (2023-03-30) (“[TS38306]”).
  • RedCap reduced capability
  • the network architecture 200 may include a set of UEs 202 coupled directly with one another via a D2D, ProSe, PC5, and/or SL interface, and/or any other suitable interface such as any of those discussed herein.
  • These UEs 202 may be M2M/D2D/MTC/IoT devices and/or vehicular systems that communicate using physical sidelink channels such as, but not limited to, PSBCH, PSDCH, PSSCH, PSCCH, PSFCH, and the like.
  • the UE 202 may perform blind decoding attempts of SL channel s/links according to the various examples herein.
  • the UE 202 may additionally communicate with an AP 206 via an over-the-air (OTA) connection.
  • the AP 206 manages a WLAN connection, which may serve to offload some/all network traffic from the RAN 204.
  • the connection between the UE 202 and the AP 206 may be consistent with any IEEE 802.11 protocol.
  • the UE 202, RAN 204, and AP 206 may utilize cellular- WLAN aggregation/integration (e.g., LWA/LWIP).
  • Cellular- WLAN aggregation may involve the UE 202 being configured by the RAN 204 to utilize both cellular radio resources and WLAN resources.
  • the RAN 204 includes one or more access network nodes (ANs) 208.
  • the ANs 208 terminate air interface (s) for the UE 202 by providing access to stratum protocols, including RRC, PDCP, RLC, MAC, and PHY/L1 protocols. In this manner, the AN 208 enables data/voice connectivity between CN 220 and the UE 202.
  • the ANs 208 may be a macrocell base station or a low-power base station for providing femtocells, picocells, or other like cells having smaller coverage areas, smaller user capacity, or higher bandwidth compared to macrocells, or some combination thereof.
  • an AN 208 can be referred to as a BS, gNB, RAN node, eNB, ng-eNB, NodeB, RSU, TRxP, and the like.
  • One example implementation is a “CU/DU split” architecture where the ANs 208 are embodied as a gNB-Central Unit (CU) that is communicatively coupled with one or more gNB -Distributed Units (DUs), where each DU may be communicatively coupled with one or more Radio Units (RUs) (also referred to as RRHs, RRUs, or the like) (see e.g., [TS38401]).
  • RUs Radio Units
  • the one or more RUs may be individual RSUs.
  • the CU/DU split may include an ng-eNB -CU and one or more ng-eNB -DUs instead of, or in addition to, the gNB-CU and gNB-DUs, respectively.
  • the ANs 208 employed as the CU may be implemented in a discrete device or as one or more software entities running on server computers as part of, for example, a virtual network including a virtual Base Band Unit (BBU) or BBU pool, cloud RAN (CRAN), Radio Equipment Controller (REC), Radio Cloud Center (RCC), centralized RAN (C-RAN), virtualized RAN (vRAN), and/or the like (although these terms may refer to different implementation concepts). Any other type of architecture, arrangements, and/or configurations can be used.
  • BBU Virtual Base Band Unit
  • CRAN cloud RAN
  • REC Radio Equipment Controller
  • RRCC Radio Cloud Center
  • C-RAN centralized RAN
  • vRAN virtualized RAN
  • the set of ANs may be coupled with one another via an X2 interface (if the RAN 204 is an LTE RAN or Evolved Universal Terrestrial Radio Access Network (E-UTRAN) 210) or an Xn interface (if the RAN 204 is an NG-RAN 214).
  • the X2/Xn interfaces which may be separated into control/user plane interfaces in some examples, may allow the ANs to communicate information related to handovers, data/context transfers, mobility, load management, interference coordination, and the like.
  • the ANs of the RAN 204 may each manage one or more cells, cell groups, component carriers, and the like to provide the UE 202 with an air interface for network access.
  • the UE 202 may be simultaneously connected with a set of cells provided by the same or different ANs 208 of the RAN 204.
  • the UE 202 and RAN 204 may use carrier aggregation to allow the UE 202 to connect with a set of component carriers, each corresponding to a Pcell or Scell.
  • a first AN 208 may be a master node that provides an MCG
  • a second AN 208 may be a secondary node that provides an SCG.
  • the first/second ANs 208 may be any combination of eNB, gNB, ng-eNB, and the like.
  • the RAN 204 may provide the air interface over a licensed spectrum or an unlicensed spectrum.
  • the nodes may use LAA, eLAA, and/or feLAA mechanisms based on CA technology with PCells/Scells.
  • the nodes Prior to accessing the unlicensed spectrum, the nodes may perform medium/carrier-sensing operations based on, for example, a listen- before-talk (LBT) protocol.
  • LBT listen- before-talk
  • individual UEs 202 provide radio information to one or more ANs 208 and/or one or more edge compute nodes (e.g., edge servers/hosts and the like).
  • the radio information may be in the form of one or more measurement reports and may include, for example, signal strength measurements, signal quality measurements, and/or the like.
  • Each measurement report is tagged with a timestamp and the location of the measurement (e.g., the UEs 202 current location).
  • the measurements collected by the UEs 202 and/or included in the measurement reports may include one or more of the following: bandwidth (BW), network or cell load, latency, jitter, round trip time (RTT), number of interrupts, out-of- order delivery of data packets, transmission power, bit error rate, bit error ratio (BER), Block Error Rate (BLER), packet error ratio (PER), packet loss rate, packet reception rate (PRR), data rate, peak data rate, end-to-end (e2e) delay, signal -to-noise ratio (SNR), signal-to-noise and interference ratio (SINR), signal-plus-noise-plus-distortion to noise-plus-distortion (SINAD) ratio, carrier- to-interference plus noise ratio (CINR), Additive White Gaussian Noise (AWGN), energy per bit to noise power density ratio (Eb/NO), energy per chip to interference power density ratio (Ec/10), energy per chip to noise power density ratio (Ec/NO), peak-to-to
  • the RSRP, RSSI, and/or RSRQ measurements may include RSRP, RSSI, and/or RSRQ measurements of cellspecific reference signals, channel state information reference signals (CSI-RS), and/or synchronization signals (SS) or SS blocks for 3GPP networks (e.g., LTE or 5G/NR), and RSRP, RSSI, RSRQ, RCPI, RSNI, and/or ANPI measurements of various beacon, Fast Initial Link Setup (FILS) discovery frames, or probe response frames for WLAN/WiFi (e.g., [IEEE80211]) networks.
  • CSI-RS channel state information reference signals
  • SS synchronization signals
  • 3GPP networks e.g., LTE or 5G/NR
  • measurements may be additionally or alternatively used, such as those discussed in 3GPP TS 36.214 vl7.0.0 (2022-03-31) (“[TS36214]”), 3GPP TS 38.215 V17.3.0 (2023-03-30) (“[TS38215]”), 3GPP TS 38.314 vl7.2.0 (2023-01-13) (“[TS38314]”), IEEE Standard for Information Technology- Telecommunications and Information Exchange between Systems - Local and Metropolitan Area Networks— Specific Requirements - Part 11 : Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications, IEEE Std 802.11-2020, pp.1-4379 (26 Feb. 2021) (“[IEEE80211]”), and/or the like. Additionally or alternatively, any of the measurements above (or a combination of measurements) may be collected by one or more ANs 208 and provided to the edge compute node(s).
  • MAC Wireless LAN Medium Access Control
  • PHY Physical Layer
  • the measurements can include one or more of the following measurements: measurements related to Data Radio Bearer (DRB) (e.g., number of DRBs attempted to setup, number of DRBs successfully setup, number of released active DRBs, in-session activity time for DRB, number of DRBs attempted to be resumed, number of DRBs successfully resumed, and the like); measurements related to Radio Resource Control (RRC) (e.g., mean number of RRC connections, maximum number of RRC connections, mean number of stored inactive RRC connections, maximum number of stored inactive RRC connections, number of attempted, successful, and/or failed RRC connection establishments, and the like); measurements related to UE Context (UECNTX); measurements related to Radio Resource Utilization (RRU) (e.g., DL total PRB usage, UL total PRB usage, distribution of DL total PRB usage, distribution of UL total PRB usage, DL PRB used for data traffic, UL PRB used for data traffic, DL total available PRBs,
  • RRC Radio Resource Control
  • the radio information may be reported in response to a trigger event and/or on a periodic basis. Additionally or alternatively, individual UEs 202 report radio information either at a low periodicity or a high periodicity depending on a data transfer that is to take place and/or other information about the data transfer. Additionally or alternatively, the edge compute node(s) may request the measurements from the ANs 208 at low or high periodicity, or the ANs 208 may provide the measurements to the edge compute node(s) at low or high periodicity.
  • the edge compute node(s) may obtain other relevant data from other edge compute node(s), core network functions (NFs), application functions (AFs), and/or other UEs 202 such as Key Performance Indicators (KPIs), with the measurement reports or separately from the measurement reports.
  • KPIs Key Performance Indicators
  • the edge compute node(s) may obtain other relevant data from other edge compute node(s), core network functions (NFs), application functions (AFs), and/or other UEs 202 such as Key Performance Indicators (KPIs), with the measurement reports or separately from the measurement reports.
  • KPIs Key Performance Indicators
  • simple imputations may be performed to supplement the obtained observation data such as, for example, substituting values from previous reports and/or historical data, apply an extrapolation filter, and/or the like.
  • acceptable bounds for the observation data may be predetermined or configured.
  • CQI and MCS measurements may be configured to only be within ranges defined by suitable 3GPP standards.
  • a reported data value does not make sense (e.g., the value exceeds an acceptable range/bounds or the like)
  • such values may be dropped for the current leaming/training episode or epoch.
  • delay bounds may be defined or configured, and packets determined to have been received after the packet delivery delay bound may be dropped.
  • the UE 202 can also perform determine reference signal (RS) measurement and reporting procedures to provide the network with information about the quality of one or more wireless channels and/or the communication media in general, and this information can be used to optimize various aspects of the communication system.
  • the measurement and reporting procedures performed by the UE 202 can include those discussed in 3 GPP TS 38.211 V17.4.0 (2023-01-04) (“[TS38211]”), 3GPP TS 38.212 vl7.4.0 (2023-01- 04) (“[TS38212]”), 3GPP TS 38.213 vl7.4.0 (2023-01-04) (“[TS38213]”), 3GPP TS 38.214 vl7.4.0 (2023-01-04) (“[TS38214]”), [TS38215], 3GPP TS 38.101-1 V18.0.0 (2023-01-12) (“[TS38.101-1]”), 3GPP TS 38.104 vl8.0.0 (2023-01-10) (“[TS38104]”), 3GPP
  • the physical signals and/or Rscan include demodulation reference signals (DM-RS), phase-tracking reference signals (PT-RS), positioning reference signal (PRS), channel-state information reference signal (CSI-RS), synchronization signal block (SSB), primary synchronization signal (PSS), secondary synchronization signal (SSS), and sounding reference signal (SRS).
  • DM-RS demodulation reference signals
  • PT-RS phase-tracking reference signals
  • PRS positioning reference signal
  • CSI-RS channel-state information reference signal
  • SSB synchronization signal block
  • PSS primary synchronization signal
  • SSS secondary synchronization signal
  • SRS sounding reference signal
  • any suitable data collection and/or measurement mechanism(s) may be used to collect the observation data.
  • data marking e.g., sequence numbering and the like
  • packet tracing e.g., signal measurement
  • data sampling e.g., data sampling
  • timestamping e.g., timestamping
  • the collection of data may be based on the occurrence of events that trigger the collection of the data. Additionally or alternatively, data collection may take place at the initiation or termination of an event.
  • the data collection can be continuous, discontinuous, and/or have start and stop times.
  • the data collection techniques/mechanisms may be specific to an HW configuration/implementation or non-HW-specific or may be based on various software parameters (e.g., OS type and version, and the like). Various configurations may be used to define any of the aforementioned data collection parameters.
  • Such configurations may be defined by suitable specifications/standards, such as 3GPP (e.g., [SA6Edge]), ETSI (e.g., [MEC]), O-RAN (e.g., [O-RAN]), Intel® Smart Edge Open (formerly OpenNESS) (e.g., [ISEO]), IETF (e.g., MAMS [RFC8743]), lEEE/WiFi (e.g., [IEEE80211], [WiMAX], [IEEE16090], and the like), and/or any other like standards such as those discussed herein.
  • 3GPP e.g., [SA6Edge]
  • ETSI e.g., [MEC]
  • O-RAN e.g., [O-RAN]
  • Intel® Smart Edge Open formerly OpenNESS
  • IETF e.g., MAMS [RFC8743]
  • lEEE/WiFi e.g., [IEEE80211], [
  • the UE 202 or AN 208 may be or act as a roadside unit (RSU), which may refer to any transportation infrastructure entity used for V2X communications.
  • RSU may be implemented in or by a suitable AN or a stationary (or relatively stationary) UE.
  • An RSU implemented in or by a UE may be referred to as a “UE-type RSU”; an eNB may be referred to as an “eNB- type RSU”; a gNB may be referred to as a “gNB-type RSU”; and the like.
  • an RSU is a computing device coupled with radio frequency circuitry located on a roadside that provides connectivity support to passing vehicle UEs.
  • the RSU may also include internal data storage circuitry to store intersection map geometry, traffic statistics, and media, as well as applications/software to sense and control ongoing vehicular and pedestrian traffic.
  • the RSU may provide very low-latency communications required for high-speed events, such as crash avoidance, traffic warnings, and the like. Additionally or alternatively, the RSU may provide other cellular/WLAN communications services.
  • the components of the RSU may be packaged in a weatherproof enclosure suitable for outdoor installation and may include a network interface controller to provide a wired connection (e.g., Ethernet) to a traffic signal controller or a backhaul network.
  • V2X RATs may be employed, which allow V2X nodes to communicate directly with one another, with infrastructure equipment (e.g., AN 208), and/or other devices/nodes.
  • at least two distinct V2X RATs may be used including WLAN V2X (W-V2X) RATs based on IEEE V2X technologies (e.g., DSRC for the U.S. and ITS-G5 for Europe) and cellular V2X (C-V2X) RATs based on 3GPP V2X technologies (e.g., LTE V2X, 5G/NR V2X, and beyond).
  • the C-V2X RAT may utilize a C-V2X air interface
  • the WLAN V2X RAT may utilize a W-V2X air interface.
  • the W-V2X RATs include, for example, IEEE Guide for Wireless Access in Vehicular Environments (WAVE) Architecture, IEEE Standards Association, IEEE 1609.0-2019 (10 Apr. 2019) (“[IEEE 16090]”), V2X Communications Message Set Dictionary, SAE IntT (23 Jul. 2020) (“[J2735_202007]”), Intelligent Transport Systems in the 5 GHz frequency band (ITS-G5), the [IEEE8021 Ip] (which is the layer 1 (LI) and layer 2 (L2) part of WAVE, DSRC, and ITS-G5), and/or IEEE Standard for Air Interface for Broadband Wireless Access Systems, IEEE Std 802.16-2017, pp.1-2726 (02 Mar. 2018) (“[WiMAX]”).
  • DSRC refers to vehicular communications in the 5.9 GHz frequency band that is generally used in the United States
  • ITS-G5 refers to vehicular communications in the 5.9 GHz frequency band in Europe. Since any number of different RATs are applicable (including [IEEE8021 Ip] RATs) that may be used in any geographic or political region, the terms “DSRC” (used, among other regions, in the U.S.) and “ITS-G5” (used, among other regions, in Europe) may be used interchangeably throughout this disclosure.
  • the access layer for the ITS-G5 interface is outlined in ETSI EN 302 663 VI.3.1 (2020-01) (hereinafter “[EN302663]”) and describes the access layer of the ITS-S reference architecture.
  • the ITS-G5 access layer comprises [IEEE80211] (which now incorporates [IEEE8021 Ip]), as well as features for Decentralized Congestion Control (DCC) methods discussed in ETSI TS 102 687 VI.2.1 (2018-04) (“[TS102687]”).
  • DCC Decentralized Congestion Control
  • the access layer for 3GPP LTE-V2X based interface(s) is outlined in, inter alia, ETSI EN 303 613 VI.1.1 (2020-01), 3GPP TS 23.285 V16.2.0 (2019-12); and 3GPP 5G/NR-V2X is outlined in, inter alia, 3GPP TR 23.786 V16.1.0 (2019-06) and 3GPP TS 23.287 vl8.0.0 (2023-03-31) (“[TS23287]”).
  • the E-UTRAN 210 provides an LTE air interface (Uu) with the parameters and characteristics at least as discussed in 3GPP TS 36.300 vl7.2.0 (2022-09-30) (“[TS36300]”).
  • the RAN 204 is a next generation (NG)-RAN 214 with a set of gNBs 216.
  • NG next generation
  • Each gNB 216 connects with 5G-enabled UEs 202 using a 5G-NR air interface (which may also be referred to as a Uu interface) with parameters and characteristics, as discussed in [TS38300], among many other 3GPP standards.
  • 5G-NR air interface which may also be referred to as a Uu interface
  • the one or more ng-eNBs 218 connect with a UE 202 via the 5G Uu and/or LTE Uu interface.
  • the gNBs 216 and the ng-eNBs 218 connect with the 5GC 240 through respective NG interfaces, which include an N2 interface, an N3 interface, and/or other interfaces.
  • the gNB 216 and the ng-eNB 218 are connected over an Xn interface. Additionally, individual gNBs 216 are connected via respective Xn interfaces, and individual ng-eNBs 218 are connected via respective Xn interfaces.
  • the NG interface may be split into two parts: an NG user plane (NG-U) interface, which carries traffic data between the nodes of the NG-RAN 214 and a UPF 248 (e.g., N3 interface), and an NG control plane (NG-C) interface, which is a signaling interface between the nodes of the NG-RAN 214 and an AMF 244 (e.g., N2 interface).
  • NG-U NG user plane
  • N3 interface e.g., N3 interface
  • N-C NG control plane
  • the NG-RAN 214 may provide a 5G-NR air interface (which may also be referred to as a Uu interface) with the following characteristics: variable SCS; CP-OFDM for DL, CP-OFDM, and DFT-s-OFDM for UL; polar, repetition, simplex, and Reed-Muller codes for control and LDPC for data.
  • the 5G-NR air interface may rely on CSI-RS, PDSCH/PDCCH DMRS, similar to the LTE air interface.
  • the 5G-NR air interface may not use a CRS but may use PBCH DMRS for PBCH demodulation, PTRS for phase tracking for PDSCH, and tracking reference signal for time tracking.
  • the 5G-NR air interface may operate on FR1 bands that include bands from 410 MHz to 7125 MHz or FR2 bands that include bands from 24.25 GHz to 71 GHz.
  • the 5G-NR air interface may include an SSB, which is an area of a downlink resource grid that includes PSS/SSS/PBCH.
  • the 5G-NR air interface may utilize BWPs for various purposes.
  • BWP can be used to adapt the SCS dynamically.
  • the UE 202 can be configured with multiple BWPs, with each BWP configuration having a different SCS. When a BWP change is indicated to the UE 202, the SCS of the transmission is changed as well.
  • BWP Another use case example of BWP is related to power saving.
  • multiple BWPs can be configured for the UE 202 with different amounts of frequency resources (e.g., PRBs) to support data transmission under different traffic loading scenarios.
  • a BWP containing a smaller number of PRBs can be used for data transmission with a small traffic load while allowing power saving at the UE 202 and, in some cases, at the gNB 216.
  • a BWP containing a larger number of PRBs can be used for scenarios with higher traffic load.
  • individual gNBs 216 can include a gNB- CU and a set of gNB-DUs. Additionally or alternatively, gNBs 216 can include one or more RUs. In these implementations, the gNB-CU may be connected to each gNB-DU via respective Fl interfaces. In the case of network sharing with multiple cell ID broadcast(s), each cell identity associated with a subset of PLMNs corresponds to a gNB-DU, and the gNB-CU is connected to share the same physical layer of cell resources. For resiliency, a gNB-DU may be connected to multiple gNB-CUs by appropriate implementation.
  • a gNB-CU can be separated into gNB-CU control plane (gNB-CU-CP) and gNB- CU user plane (gNB-CU-UP) functions.
  • the gNB-CU-CP is connected to a gNB-DU through an Fl control plane interface (Fl-C)
  • the gNB-CU-UP is connected to the gNB-DU through an Fl user plane interface (Fl-U)
  • the gNB-CU-UP is connected to the gNB-CU-CP through an El interface.
  • one gNB-DU is connected to only one gNB-CU-CP
  • one gNB-CU-UP is connected to only one gNB-CU-CP.
  • a gNB-DU and/or a gNB-CU-UP may be connected to multiple gNB-CU-CPs by the appropriate implementation.
  • One gNB-DU can be connected to multiple gNB- CU-UPs under the control of the same gNB-CU-CP, and one gNB-CU-UP can be connected to multiple DUs under the control of the same gNB-CU-CP.
  • Data forwarding between gNB-CU-UPs during intra-gNB-CU-CP handover within a gNB may be supported by Xn-U.
  • individual ng-eNBs 218 can include an ng-eNB-CU and a set of ng-eNB-DUs.
  • the ng-eNB-CU and each ng- eNB-DU are connected via respective W1 interfaces.
  • An ng-eNB can include an ng-eNB-CU-CP, one or more ng-eNB -CU-UP(s), and one or more ng-eNB- DU(s).
  • An ng-eNB-CU-CP and an ng-eNB-CU-UP are connected via the El interface.
  • An ng-eNB-DU is connected to an ng-eNB-CU-CP via the W1 -C interface and to an ng-eNB-CU-UP via the W1 -U interface.
  • the general principle described herein with respect to gNB aspects also applies to ng-eNB aspects and corresponding El and W1 interfaces if not explicitly specified otherwise.
  • the node hosting the user plane part of the PDCP protocol layer (e.g., gNB-CU, gNB-CU-UP, and for EN-DC, MeNB, or SgNB, depending on the bearer split) performs user inactivity monitoring. Further, it informs its inactivity or (re)activation to the node having a control plane connection towards the core network (e.g., over El, X2, or the like).
  • the node hosting the RLC protocol layer e.g., gNB-DU
  • may perform user inactivity monitoring and further inform its inactivity or (re)activation to the node hosting the control plane (e.g., gNB- CU or gNB-CU-CP).
  • the NG-RAN 214 is layered into a Radio Network Layer (RNL) and a Transport Network Layer (TNL).
  • RNL Radio Network Layer
  • TNL Transport Network Layer
  • the NG-RAN 214 architecture e.g., the NG-RAN logical nodes and interfaces between them
  • RNL Radio Network Layer
  • TNL protocol For each NG-RAN interface (e.g., NG, Xn, Fl, and the like), the related TNL protocol and the functionality are specified, for example, in [TS38401],
  • the TNL provides services for user plane transport and/or signaling transport.
  • each NG-RAN node is connected to all AMFs, 244 of which are AMF sets within an AMF region, supporting at least one slice, also supported by the NG-RAN node.
  • the AMF Set and the AMF Region are defined in [TS23501],
  • the RAN 204 is communicatively coupled to CN 220, which includes network elements and/or network functions (NFs) to provide various functions to support data and telecommunications services to customers/subscribers (e.g., UE 202).
  • the components of the CN 220 may be implemented in one physical node or separate physical nodes.
  • NFV may be utilized to virtualize any or all of the functions provided by the network elements of the CN 220 onto physical compute/storage resources in servers, switches, and the like.
  • a logical instantiation of the CN 220 may be referred to as a network slice, and a logical instantiation of a portion of the CN 220 may be referred to as a network subslice.
  • the CN 220 may be an LTE CN 220 (also referred to as an Evolved Packet Core (EPC) 222).
  • the EPC 222 may include MME 224, SGW 226, SGSN 228, HSS 230, PGW 232, and PCRF 234 coupled with one another over interfaces (or “reference points”) as shown.
  • the NFs in the EPC 222 are briefly introduced as follows.
  • the MME 224 implements mobility management functions to track the current location of the UE 202 to facilitate paging, bearer activation/deactivation, handovers, gateway selection, authentication, and the like.
  • the SGW 226 terminates an SI interface toward the RAN 210 and routes data packets between the RAN 210 and the EPC 222.
  • the SGW 226 may be a local mobility anchor point for inter-RAN node handovers and may also provide an anchor for inter-3GPP mobility. Other responsibilities may include lawful intercept, charging, and some policy enforcement.
  • the SGSN 228 tracks the location of the UE 202 and performs security functions and access control.
  • the SGSN 228 also performs inter-EPC node signaling for mobility between different RAT networks; PDN and S-GW selection as specified by MME 224; MME 224 selection for handovers; and the like.
  • the S3 reference point between the MME 224 and the SGSN 228 enables user and bearer information exchange for inter-3GPP access network mobility in idle/active states.
  • the HSS 230 includes a database for network users, including subscription-related information to support the network entities’ handling of communication sessions.
  • the HSS 230 can provide support for routing/roaming, authentication, authorization, naming/addressing resolution, location dependencies, and the like.
  • An S6a reference point between the HSS 230 and the MME 224 may enable the transfer of subscription and authentication data for authenticating/authorizing user access to the EPC 222.
  • the PGW 232 may terminate an SGi interface toward a data network (DN) 236 that may include an application (app)/content server 238.
  • the PGW 232 routes data packets between the EPC 222 and the data network 236.
  • the PGW 232 is communicatively coupled with the SGW 226 by an S5 reference point to facilitate user plane tunneling and tunnel management.
  • the PGW 232 may further include a node for policy enforcement and charging data collection (e.g., PCEF). Additionally, the SGi reference point may communicatively couple the PGW 232 with the same or different data network 236.
  • PCEF policy enforcement and charging data collection
  • the PGW 232 may be communicatively coupled with a PCRF 234 via a Gx reference point.
  • the PCRF 234 is the policy and charging control element of the EPC 222.
  • the PCRF 234 is communicatively coupled to the app/content server 238 to determine appropriate QoS and charging parameters for service flows.
  • the PCRF 234 also provisions associated rules into a PCEF (via Gx reference point) with appropriate TFT and QCI.
  • the CN 220 may be a 5GC 240, including an AUSF 242, AMF 244, SMF 246, UPF 248, NSSF 250, NEF 252, NRF 254, PCF 256, UDM 258, and AF 260 coupled with one another over various interfaces as shown.
  • the NFs in the 5GC 240 are briefly introduced as follows.
  • the AUSF 242 stores data for authentication of UE 202 and handles authentication-related functionality.
  • the AUSF 242 may facilitate a common authentication framework for various access types.
  • the AMF 244 allows other functions of the 5GC 240 to communicate with the UE 202 and the RAN 204 and to subscribe to notifications about mobility events with respect to the UE 202.
  • the AMF 244 is also responsible for registration management (e.g., for registering UE 202), connection management, reachability management, mobility management, lawful interception of AMF -related events, and access authentication and authorization.
  • the AMF 244 provides transport for SM messages between the UE 202 and the SMF 246 and acts as a transparent proxy for routing SM messages.
  • AMF 244 also provides transport for SMS messages between UE 202 and an SMSF.
  • AMF 244 interacts with the AUSF 242 and the UE 202 to perform various security anchor and context management functions.
  • AMF 244 is a termination point of a RAN-CP interface, which includes the N2 reference point between the RAN 204 and the AMF 244.
  • the AMF 244 is also a termination point of NAS (Nl) signaling and performs NAS ciphering and integrity protection.
  • AMF 244 also supports NAS signaling with the UE 202 over an N3IWF interface.
  • the N3IWF provides access to untrusted entities.
  • N3IWF may be a termination point for the N2 interface between the RAN 204 and the AMF 244 for the control plane, and may be a termination point for the N3 reference point between the RAN 214 and the UPF 248 for the user plane.
  • the AMF 244 handles N2 signaling from the SMF 246 and the AMF 244 for PDU sessions and quality of service, encapsulates/de-encapsulates packets for IPSec and N3 tunneling, marks N3 user-plane packets in the uplink, and enforces quality of service corresponding to N3 packet marking taking into account quality of service requirements associated with such marking received over N2.
  • N3IWF may also relay UL and DL control -plane NAS signaling between the UE 202 and AMF 244 via an N1 reference point between the UE 202 and the AMF 244, and relay uplink and downlink user-plane packets between the UE 202 and UPF 248.
  • the N3IWF also provides mechanisms for IPsec tunnel establishment with the UE 202.
  • the AMF 244 may exhibit a Namf service-based interface and may be a termination point for an N14 reference point between two AMFs 244 and an N17 reference point between the AMF 244 and a 5G-EIR (not shown by FIG. 2).
  • the SMF 246 is responsible for SM (e.g., session establishment, tunnel management between UPF 248 and AN 208); UE IP address allocation and management (including optional authorization); selection and control of UP function; configuring traffic steering at UPF 248 to route traffic to proper destination; termination of interfaces toward policy control functions; controlling part of policy enforcement, charging, and quality of service; lawful intercept (for SM events and interface to LI system); termination of SM parts of NAS messages; downlink data notification; initiating AN specific SM information, sent via AMF 244 over N2 to AN 208; and determining SSC mode of a session.
  • SM e.g., session establishment, tunnel management between UPF 248 and AN 208
  • UE IP address allocation and management including optional authorization
  • selection and control of UP function configuring traffic steering at UPF 248 to route traffic to proper destination; termination of interfaces toward policy control functions; controlling part of policy enforcement, charging, and quality of service; lawful intercept (for SM events and interface to LI system); termination of
  • the SMF 246 may also include the following functionalities to support edge computing enhancements (see, e.g., [TS23548]): selection of EASDF 261 and provision of its address to the UE as the DNS server for the PDU session; usage of EASDF 261 services as defined in [TS23548]; and for supporting the application layer architecture defined in [TS23558], provision and updates of ECS address configuration information to the UE.
  • edge computing enhancements see, e.g., [TS23548]: selection of EASDF 261 and provision of its address to the UE as the DNS server for the PDU session; usage of EASDF 261 services as defined in [TS23548]; and for supporting the application layer architecture defined in [TS23558], provision and updates of ECS address configuration information to the UE.
  • Discovery and selection procedures for EASDFs 261 are discussed in [TS23501] ⁇ 6.3.23.
  • the UPF 248 acts as an anchor point for intra-RAT and inter-RAT mobility, an external PDU session point of interconnect to data network 236, and a branching point to support multi-homed PDU sessions.
  • the UPF 248 also performs packet routing and forwarding, packet inspection, enforces user plane part of policy rules, lawfully intercepts packets (UP collection), performs traffic usage reporting, performs quality of service handling for a user plane (e.g., packet filtering, gating, UL/DL rate enforcement), performs uplink traffic verification (e.g., SDF-to-QoS flow mapping), transport level packet marking in the uplink and downlink, and performs downlink packet buffering and downlink data notification triggering.
  • UPF 248 may include an uplink classifier to support routing traffic flows to a data network.
  • the NSSF 250 selects a set of network slice instances serving the UE 202.
  • the NSSF 250 also determines allowed NSSAI and the mapping to the subscribed S-NSSAIs, if needed.
  • the NSSF 250 also determines an AMF set to be used to serve the UE 202 or a list of candidate AMFs 244 based on a suitable configuration and possibly by querying the NRF 254.
  • the selection of a set of network slice instances for the UE 202 may be triggered by the AMF 244 with which the UE 202 is registered by interacting with the NSSF 250; this may lead to a change of AMF 244.
  • the NSSF 250 interacts with the AMF 244 via an N22 reference point and may communicate with another NSSF in a visited network via an N31 reference point (not shown).
  • the NEF 252 securely exposes services and capabilities provided by 3GPP NFs for third-party, internal exposure/re-exposure, AFs 260, edge computing, or fog computing systems (e.g., edge compute node, and the like.
  • the NEF 252 may authenticate, authorize, or throttle the AFs.
  • NEF 252 may also translate information exchanged with the AF 260 and information exchanged with internal network functions. For example, the NEF 252 may translate between an AF-Service-Identifier and an internal 5GC information.
  • NEF 252 may also receive information from other NFs based on the capabilities of other NFs that are exposed. This information may be stored at the NEF 252 as structured data or at a data storage NF using standardized interfaces. The stored information can then be re-exposed by the NEF 252 to other NFs and AFs or used for other purposes, such as analytics.
  • the NRF 254 supports service discovery functions, receives NF discovery requests from NF instances, and provides information on the discovered NF instances to the requesting NF instances. NRF 254 also maintains information on available NF instances and their supported services. The NRF 254 also supports service discovery functions, wherein the NRF 254 receives an NF Discovery Request from an NF instance or an SCP (not shown) and provides information about the discovered NF instances to the NF instance or SCP.
  • the PCF 256 provides policy rules to control plane functions and enforce them, and it may also support a unified policy framework to govern network behavior.
  • the PCF 256 may also implement a front end to access subscription information relevant to policy decisions in a unified data repository (UDR) of the UDM 258.
  • UDR unified data repository
  • the PCF 256 exhibits an Npcf service-based interface.
  • the UDM 258 handles subscription-related information to support the network entities’ handling of communication sessions and stores subscription data of UE 202.
  • subscription data may be communicated via an N8 reference point between the UDM 258 and the AMF 244.
  • the UDM 258 may include two parts: an application front end and a UDR.
  • the UDR may store subscription data and policy data for the UDM 258 and the PCF 256, and/or structured data for exposure and application data (including PFDs for application detection and application request information for multiple UEs 202) for the NEF 252.
  • the Nudr service-based interface may be exhibited by the UDR to allow the UDM 258, PCF 256, and NEF 252 to access a particular set of stored data, as well as to read, update (e.g., add, modify), delete, and subscribe to notification of relevant data changes in the UDR.
  • the UDM 258 may include a UDM-FE, which is in charge of processing credentials, location management, subscription management, and so on. Several different front ends may serve the same user in different transactions.
  • the UDM-FE accesses subscription information stored in the UDR and performs authentication credential processing, user identification handling, access authorization, registration/mobility management, and subscription management.
  • the UDM 258 may exhibit the Nudm service-based interface.
  • Edge Application Server Discovery Function (EASDF) 261 exhibits a Neasdf service-based interface and is connected to the SMF 246 via an N88 interface.
  • EASDF instances may be deployed within a PLMN, and interactions between 5GC NF(s) and the EASDF 261 take place within a PLMN.
  • the EASDF 261 includes one or more of the following functionalities: registering to NRF 254 for EASDF 261 discovery and selection; handling the DNS messages according to the instruction from the SMF 246; and/or terminating DNS security if used.
  • Handling the DNS messages according to the instruction from the SMF 246 includes one or more of the following functionalities: receiving DNS message handling rules and/or BaselineDNSPattem from the SMF 246; exchanging DNS messages from/with the UE 202; forwarding DNS messages to C-DNS or L-DNS for DNS query; adding EDNS client subnet (ECS) option into DNS query for an FQDN; reporting to the SMF 246 the information related to the received DNS messages; and/or buffering/discarding DNS messages from the UE 202 or DNS Server.
  • the EASDF has direct user plane connectivity (e.g., without any NAT) with the PSA UPF over N6 for the transmission of DNS signaling exchanged with the UE.
  • the deployment of a NAT between EASDF 261 and PSA UPF 248 may or may not be supported. Additional aspects of the EASDF 261 are discussed in [TS23548],
  • AF 260 provides application influence on traffic routing, provides access to NEF 252, and interacts with the policy framework for policy control.
  • the AF 260 may influence UPF 248 (re)selection and traffic routing.
  • the network operator may permit AF 260 to interact directly with relevant NFs.
  • the AF 260 is used for edge computing implementations.
  • the 5GC 240 may enable edge computing by selecting operator/3rd party services to be geographically close to the point where the UE 202 is attached to the network. This may reduce latency and load on the network.
  • the 5GC 240 may select a UPF 248 close to the UE 202 and execute traffic steering from the UPF 248 to DN 236 via the N6 interface. This may be based on the UE subscription data, UE location, and information provided by the AF 260, which allows the AF 260 to influence UPF (re)selection and traffic routing.
  • the data network (DN) 236 may represent various network operator services, Internet access, or third-party services that may be provided by one or more servers, including, for example, app/content server 238.
  • the DN 236 may be an external public operator, a private PDN, or an intra-operator packet data network, for example, for the provision of IMS services.
  • the app/content server 238 can be coupled to an IMS via an S-CSCF or the I-CSCF.
  • the DN 236 may represent one or more local area DNs (LADNs), which are DNs 236 (or DN names (DNNs)) that is/are accessible by a UE 202 in one or more specific areas. Outside of these specific areas, the UE 202 is not able to access the LADN/DN 236.
  • LADNs local area DNs
  • DNNs DN names
  • the DN 236 may be an edge DN 236, which is a (local) DN that supports the architecture for enabling edge applications.
  • the app/content server 238 may represent the physical hardware systems/devices providing app server functionality and/or the application software resident in the cloud or at an edge compute node that performs server function(s).
  • the app/content server 238 provides an edge hosting environment that provides the support required for the Edge Application Server's execution.
  • the 5GS can use one or more edge compute nodes to provide an interface and offload processing of wireless communication traffic.
  • the edge compute nodes may be included in or co-located with one or more RANs 210, 214.
  • the edge compute nodes can provide a connection between the RAN 214 and UPF 248 in the 5GC 240.
  • the edge compute nodes can use one or more NFV instances instantiated on virtualization infrastructure within the edge compute nodes to process wireless connections to and from the RAN 214 and UPF 248.
  • the edge compute nodes provide a distributed computing environment for application and service hosting and also provide storage and processing resources so that data and/or content can be processed in close proximity to subscribers (e.g., users of UEs 202) for faster response times.
  • the edge compute nodes also support multitenancy run-time and hosting environment(s) for applications, including virtual appliance applications that may be delivered as packaged virtual machine (VM) images, middleware applications, and infrastructure services, content delivery services including content caching, mobile big data analytics, and computational offloading, among others.
  • VM virtual machine
  • middleware applications middleware applications
  • infrastructure services content delivery services including content caching, mobile big data analytics, and computational offloading, among others.
  • Computational offloading involves offloading computational tasks, workloads, applications, and/or services to the edge compute nodes from the UEs 202, CN 220, DN 236, and/or server(s) 238, or vice versa.
  • a device application or client application operating in a UE 202 may offload application tasks or workloads to one or more edge compute nodes.
  • an edge compute node may offload application tasks or workloads to a set of UEs 202 (e.g., for distributed machine learning computation and/or the like).
  • the edge compute nodes may include or be part of an edge system that employs one or more edge computing technologies (ECTs) (also referred to as an “edge computing framework” or the like).
  • the edge compute nodes may also be referred to as “edge hosts” or “edge servers.”
  • the edge system includes a collection of edge servers and edge management systems (not shown) necessary to run edge computing applications within an operator network or a subset of an operator network.
  • Edge servers are physical computer systems that may include an edge platform and/or virtualization infrastructure and provide compute, storage, and network resources to edge computing applications.
  • Each of the edge servers is disposed at an edge of a corresponding access network and is arranged to provide computing resources and/or various services (e.g., computational task and/or workload offloading, cloud-computing capabilities, IT services, and other like resources and/or services as discussed herein) in relatively close proximity to UEs 202.
  • the VI of the edge compute nodes provide virtualized environments and virtualized resources for the edge hosts, and the edge computing applications may run as VMs and/or application containers on top of the VI.
  • the ECT is and/or operates according to the MEC framework, as discussed in ETSI GR MEC 001 v3.1.1 (2022-01), ETSI GS MEC 003 v3.1.1 (2022-03), ETSI GS MEC 009 v3.1.1 (2021-06), ETSI GS MEC 010-1 vl.1.1 (2017-10), ETSI GS MEC 010-2 v2.2.1 (2022-02), ETSI GS MEC 011 v2.2.1 (2020-12), ETSI GS MEC 012 V2.2.1 (2022-02), ETSI GS MEC 013 V2.2.1 (2022-01), ETSI GS MEC 014 v2.1.1 (2021-03), ETSI GS MEC 015 v2.1.1 (2020-06), ETSI GS MEC 016 v2.2.1 (2020-04), ETSI GS MEC 021 v2.2.1 (2022-02), ETSI GR MEC 024 v2.1.1 (
  • This example implementation may also include NFV and/or other like virtualization technologies such as those discussed in ETSI GR NFV 001 VI.3.1 (2021-03), ETSI GS NFV 002 VI.2.1 (2014-12), ETSI GR NFV 003 VI .6.1 (2021-03), ETSI GS NFV 006 V2.1.1 (2021-01), ETSI GS NFV-INF 001 Vl.1.1 (2015-01), ETSI GS NFV-INF 003 Vl.1.1 (2014-12), ETSI GS NFV-INF 004 Vl.1.1 (2015-01), ETSI GS NFV- MAN 001 vl.1.1 (2014-12), and/or Israel et al., OSM Release FIVE Technical Overview, ETSI Open Source MANO, OSM White Paper, 1st ed.
  • the ECT is and/or operates according to the 0-RAN framework.
  • front-end and back-end device vendors and carriers have worked closely to ensure compatibility.
  • the flip side of such a working model is that it becomes quite difficult to plug and play with other devices, and this can hamper innovation.
  • O-RAN Open RAN Alliance
  • the O-RAN network architecture is a building block for designing virtualized RAN on programmable hardware with radio access control powered by AI/ML.
  • O-RAN Alliance WG1 Oct. 2022
  • [O-RAN. WG1.0- RAN-Architecture-Description] O-RAN Operations and Maintenance Architecture Specification v04.00
  • O-RAN Alliance WG1 Feb.
  • O-RAN Working Group 2 (Non-RT RIC and Al interface WG) Al interface: General Aspects and Principles v03.00 (Oct. 2022) (“[O-RAN. WG2.A1GAP]”); O-RAN Working Group 2 (Non-RT RIC and Al interface WG) Al interface: Type Definitions v04.00 (Oct. 2021); O-RAN Working Group 2 (Non-RT RIC and Al interface WG) Al interface: Transport Protocol v02.00 (Oct. 2022); O-RAN Working Group 2 AI/ML workflow description and requirements v01.03 O-RAN Alliance WG2 (Oct.
  • O-RAN Working Group 2 (Non-RT RIC and Al interface WG) Non-RT RIC Architecture v02.01 (Oct. 2022); O-RAN Working Group 2 Non-RT RIC: Functional Architecture vOl.Ol, O-RAN Alliance WG2 (Jun. 2021); O-RAN Working Group 2 (Non-RT RIC and Al interface WG): R1 interface: General Aspects and Principles v03.00, O-RAN Alliance WG2 (Oct. 2022); O-RAN Working Group 3 Near-Real-time RAN Intelligent Controller Architecture & E2 General Aspects and Principles v02.02 (Jul.
  • E2SM O-RAN Working Group 3 Near-Realtime Intelligent Controller E2 Service Model (E2SM) RAN Function Network Interface (NI) vOl.OO (Feb. 2020) (“[ORAN-WG3.E2SM-NI]”); O-RAN Working Group 3 Near-Real-time Intelligent Controller E2 Service Model (E2SM) RAN Control v01.03 (Oct. 2022) (“[O-RAN. WG3.E2SM-RC]”); O- RAN Working Group 3, Near-Real-time Intelligent Controller, E2 Application Protocol (E2AP) v02.03 (Oct. 2022) (“ [O-RAN.
  • E2AP E2 Application Protocol
  • O-RAN Working Group 3 Near-Real-time RAN Intelligent Controller and E2 Interface Working Group: Near-RT RIC Architecture v03.00 (Oct. 2022) (“[O- RAN.WG3.RICARCH]”); O-RAN Working Group 4 (Open Fronthaul Interfaces WG) Control, User and Synchronization Plane Specification v09.00 (Jul. 2022) (“[O-RAN-WG4.CUS.0]”); O-RAN Fronthaul Working Group 4 Cooperative Transport Interface Transport Control Plane Specification v02.00, O-RAN Alliance WG4 (Jun. 2021); O-RAN Fronthaul Working Group 4 Cooperative Transport Interface Transport Management Plane Specification v02.00 (Jun.
  • O-RAN Fronthaul Working Group 4 Open Fronthaul Interfaces WG: Management Plane Specification v09.00 (Jul. 2022) (“[O-RAN.WG4.MP.0]”); O-RAN Alliance Working Group 5 01 Interface specification for O-CU-UP and O-CU-CP v04.00 (Oct. 2022); O-RAN Alliance Working Group 5 01 Interface specification for O-DU v05.00 (Oct. 2022); O-RAN Open Fl/Wl/El/X2/Xn Interfaces Working Group Transport Specification vOl.OO, O-RAN Alliance WG5 (Apr.
  • O-RAN Working Group 6 Cloudification and Orchestration Cloud Architecture and Deployment Scenarios for O-RAN Virtualized RAN v04.00 (Oct. 2022) (“[O-RAN. WG6.CADS]”); O-RAN Cloud Platform Reference Designs v02.00, O-RAN Alliance WG6 (Feb. 2021); O-RAN Working Group 6 02 Interface General Aspects and Principles v02.00 (Oct.
  • O-RAN Working Group 6 Cloudification and Orchestration Work Group
  • O-RAN Acceleration Abstraction Layer General Aspects and Principles v04.00 (Oct. 2022);
  • O-RAN Working Group 6 O-Cloud Notification API Specification for Event Consumers v03.00 (“[O-RAN.WG6.O-Cloud Notification API]”);
  • O-RAN WG7.IPC-HRD- Opt6 O-RAN WG7 Hardware Reference Design Specification for Indoor Picocell (FR1) with Split Architecture Option 7-2 v03.00, O-RAN Alliance WG7 (Oct. 2021) (“[O-RAN.WG7.IPC-HRD-Opt7-2]”); O-RAN WG7 Hardware Reference Design Specification for Indoor Picocell (FR1) with Split Architecture Option 8 v03.00 (Oct. 2021) (“[O-RAN. WG7.IPC-HRD-Opt8]”); O-RAN White Box Hardware Working Group Hardware Reference Design Specification for Outdoor Micro Cell with Split Architecture Option 7.2 v03.00, O-RAN Alliance WG7 (Oct. 2022) (“ [O-RAN.
  • the ECT is and/or operates according to the 3rd Generation Partnership Project (3GPP) System Aspects Working Group 6 (SA6) Architecture for enabling Edge Applications (referred to as “3GPP edge computing”) as discussed in 3GPP TS 23.558 vl8.1.0 (2022- 12-23) (“[TS23558]”), 3GPP TS 23.501 vl8.0.0 (2022-12-21) (“[TS23501 ]”), 3GPP TS 23.548 vl7.4.0 (2022-09-22) (“[TS23548]”), 3GPP TR 23.700-98 V18.0.0 (2022-12-23) (“[TR23700-98]”), 3GPP TS 23.222 vl8.0.0 (2022-12-23) (“[TS23222]”), TS 33.122 vl8.0.0 (2022-12-16) (“[TS33122]”), and 3GPP TS 29.222 V17.1.0 (2021-06-25) (“[TS29222]”), 3GPP TS 2
  • the ECT is and/or operates according to the Intel® Smart Edge Open framework (formerly known as OpenNESS) as discussed in Intel® Smart Edge Open Developer Guide, version 21.09 (30 Sep. 2021), available at: https://smart-edge-open.github.io/ (“[ISEO]”), the contents of which is hereby incorporated by reference in its entirety.
  • OpenNESS Intel® Smart Edge Open framework
  • [ISEO] the contents of which is hereby incorporated by reference in its entirety.
  • the ECT operates according to the Multi-Access Management Services (MAMS) framework as discussed in Kanugovi et al., Multi-Access Management Services (MAMS), Internet Engineering Task Force (IETF), Request for Comments (RFC) 8743 (Mar. 2020) (“[RFC8743]”), Ford et al., TCP Extensions for Multipath Operation with Multiple Addresses, IETF RFC 8684, (Mar.
  • MAMS Multi-Access Management Services
  • IETF Internet Engineering Task Force
  • RFC Request for Comments
  • edge computing frameworks/ECTs and services deployment examples are only illustrative examples of ECTs and that the present disclosure may be applicable to many other or additional edge computing/networking technologies in various combinations and layouts of devices located at the edge of a network including the various edge computing networks/sy stems described herein. Further, the techniques disclosed herein may relate to other loT edge network systems and configurations, and other intermediate processing entities and architectures may also be applicable to the present disclosure.
  • edge computing/networking technologies include [MEC]; [0-RAN]; [ISEO]; [SA6Edge]; Content Delivery Networks (CDNs) (also referred to as “Content Distribution Networks” or the like); Mobility Service Provider (MSP) edge computing and/or Mobility as a Service (MaaS) provider systems (e.g., used in AECC architectures); Nebula edge-cloud systems; Fog computing systems; Cloudlet edge-cloud systems; Mobile Cloud Computing (MCC) systems; Central Office Re-architected as a Datacenter (CORD), mobile CORD (M-CORD) and/or Converged Multi-Access and Core (COMAC) systems; and/or the like.
  • MEC Mobility Service Provider
  • MaaS Mobility as a Service
  • Nebula edge-cloud systems Fog computing systems
  • Cloudlet edge-cloud systems Cloudlet edge-cloud systems
  • MCC Mobile Cloud Computing
  • CORD Central Office Re-architected as a Datacenter
  • M-CORD mobile CORD
  • COMAC
  • the interfaces of the 5GC 240 include reference points and servicebased interfaces.
  • the reference points include N1 (between the UE 202 and the AMF 244), N2 (between RAN 214 and AMF 244), N3 (between RAN 214 and UPF 248), N4 (between the SMF 246 and UPF 248), N5 (between PCF 256 and AF 260), N6 (between UPF 248 and DN 236), N7 (between SMF 246 and PCF 256), N8 (between UDM 258 and AMF 244), N9 (between two UPFs 248), N10 (between the UDM 258 and the SMF 246), Ni l (between the AMF 244 and the SMF 246), N12 (between AUSF 242 and AMF 244), N13 (between AUSF 242 and UDM 258), N14 (between two AMFs 244; not shown), N15 (between PCF 256 and AMF 244 in case of a non-roaming scenario,
  • the service-based representation of Figure 2 represents NFs within the control plane that enable other authorized NFs to access their services.
  • the service-based interfaces include Namf (SBI exhibited by AMF 244), Nsmf (SBI exhibited by SMF 246), Nnef (SBI exhibited by NEF 252), Npcf (SBI exhibited by PCF 256), Nudm (SBI exhibited by the UDM 258), Naf (SBI exhibited by AF 260), Nnrf (SBI exhibited by NRF 254), Nnssf (SBI exhibited by NSSF 250), Nausf (SBI exhibited by AUSF 242).
  • Namf SBI exhibited by AMF 244
  • Nsmf SBI exhibited by SMF 246
  • Nnef SBI exhibited by NEF 252
  • Npcf SBI exhibited by PCF 256
  • Nudm SBI exhibited by the UDM 258
  • Naf SBI exhibited by AF 260
  • NEF 252 can provide an interface to edge compute nodes, which can be used to process wireless connections with the RAN 214.
  • the network architecture 200 may include an SMSF, which is responsible for SMS subscription checking and verification and relaying SM messages to/from the UE 202 to/from other entities, such as an SMS-GMSC/IWMSC/SMS-router.
  • the SMS may also interact with AMF 244 and UDM 258 for a notification procedure that the UE 202 is available for SMS transfer (e.g., setting a UE not reachable flag and notifying UDM 258 when UE 202 is available for SMS).
  • the 5GS may also include an SCP (or individual instances of the SCP) that supports indirect communication (see, e.g., 3GPP TS 23.501 section 7.1.1); delegated discovery (see, e.g., 3GPP TS 23.501 section 7.1.1); message forwarding and routing to destination NF/NF service(s), communication security (e.g., authorization of the NF Service Consumer to access the NF Service Producer API) (see, e.g., 3GPP TS 33.501), load balancing, monitoring, overload control, and the like; and discovery and selection functionality for UDM(s) 258, AUSF(s) 242, UDR(s), PCF(s) 256 with access to subscription data stored in the UDR based on UE's SUPI, SUCI or GPSI (see e.g., [TS23501] ⁇ 6.3).
  • SCP or individual instances of the SCP
  • indirect communication see, e.g., 3GPP TS 23.501 section 7.1.1
  • FIG. 3 schematically illustrates a wireless network 300 in accordance with various embodiments.
  • the wireless network 300 may include a UE 302 in wireless communication with AN 304.
  • the UE 302 and AN 304 may be similar to, and substantially interchangeable with, like-named components described elsewhere herein.
  • the UE 302 may be communicatively coupled with the AN 304 via connection 306.
  • Connection 306 is illustrated as an air interface to enable communicative coupling and can be consistent with cellular communications protocols such as an LTE protocol or a 5G NR protocol operating at FR2 (mmWave) or FR1 (sub-7 GHz) frequencies.
  • the UE 302 may include a host platform 308 coupled with a modem platform 310.
  • the host platform 308 may include application processing circuitry 312, which may be coupled with protocol processing circuitry 314 of the modem platform 310.
  • the application processing circuitry 312 may run various applications for the UE 302 that source/sink application data.
  • the application processing circuitry 312 may further implement one or more layer operations to transmit/receive application data to/from a data network. These layer operations may include transport (for example, UDP) and Internet (for example, IP) operations.
  • transport for example, UDP
  • IP Internet
  • the protocol processing circuitry 314 may implement one or more layer operations to facilitate the transmission or reception of data over connection 306.
  • the layer operations implemented by the protocol processing circuitry 314 may include, for example, MAC, RLC, PDCP, RRC, and NAS operations.
  • the modem platform 310 may further include digital baseband circuitry 316 that may implement one or more layer operations that are “below” layer operations performed by the protocol processing circuitry 314 in a network protocol stack. These operations may include, for example, PHY operations including one or more of HARQ-ACK functions, scrambling/descrambling, encoding/decoding, layer mapping/de-mapping, modulation symbol mapping, received symbol/bit metric determination, multi-antenna port precoding/decoding, which may include one or more of space-time, spacefrequency or spatial coding, reference signal generation/detection, preamble sequence generation and/or decoding, synchronization sequence generation/detection, control channel signal blind decoding, and other related functions.
  • PHY operations including one or more of HARQ-ACK functions, scrambling/descrambling, encoding/decoding, layer mapping/de-mapping, modulation symbol mapping, received symbol/bit metric determination, multi-antenna port precoding/decoding, which may include
  • the modem platform 310 may further include transmit circuitry 318, receive circuitry 320, RF circuitry 322, and RF front end (RFFE) 324, which may include or connect to one or more antenna panels 326.
  • the transmit circuitry 318 may include a digital -to-analog converter, mixer, intermediate frequency (IF) components, etc.
  • the receive circuitry 320 may include an analog-to-digital converter, mixer, IF components, etc.
  • the RF circuitry 322 may include a low-noise amplifier, a power amplifier, power tracking components, etc.
  • RFFE 324 may include filters (for example, surface/bulk acoustic wave filters), switches, antenna tuners, beamforming components (for example, phasearray antenna components), etc.
  • transmit/receive components may be specific to details of a specific implementation such as, for example, whether the communication is TDM or FDM, in FR2 (mmWave) or FR1 (sub-7 GHz) frequencies, etc.
  • the transmit/receive components may be arranged in multiple parallel transmit/receive chains, may be disposed of in the same or different chips/modules, etc.
  • the protocol processing circuitry 314 may include one or more instances of control circuitry (not shown) to provide control functions for the transmit/receive components.
  • a UE reception may be established by and via the one or more antenna panels 326, RFFE 324, RF circuitry 322, receive circuitry 320, digital baseband circuitry 316, and protocol processing circuitry 314.
  • the one or more antenna panels 326 may receive a transmission from the AN 304 by receive-beamforming signals received by a plurality of antennas/antenna elements of the one or more antenna panels 326.
  • a UE transmission may be established by and via the protocol processing circuitry 314, digital baseband circuitry 316, transmit circuitry 318, RF circuitry 322, RFFE 324, and one or more antenna panels 326.
  • the transmit components of the UE 302 may apply a spatial filter to the data to be transmitted to form a transmit beam emitted by the antenna elements of the one or more antenna panels 326.
  • the AN 304 may include a host platform 328 coupled with a modem platform 330.
  • the host platform 328 may include application processing circuitry 332 coupled with protocol processing circuitry 334 of the modem platform 330.
  • the modem platform may further include digital baseband circuitry 336, transmit circuitry 338, receive circuitry 340, RF circuitry 342, RFFE circuitry 344, and antenna panels 346.
  • the components of the AN 304 may be similar to and substantially interchangeable with the like- named components of the UE 302.
  • the components of the AN 304 may perform various logical functions that include, for example, RNC functions such as radio bearer management, uplink and downlink dynamic radio resource management, and data packet scheduling.
  • FIG. 4 is a block diagram illustrating components, according to some example embodiments, able to read instructions from a machine-readable or computer-readable medium (e.g., a non-transitory machine-readable storage medium) and perform any one or more of the methodologies discussed herein.
  • FIG. 4 shows a diagrammatic representation of hardware resources 400, including one or more processors (or processor cores) 410, one or more memory/storage devices 420, and one or more communication resources 430, each of which may be communicatively coupled via a bus 440 or other interface circuitry.
  • a hypervisor 402 may be executed to provide an execution environment for one or more network slices/sub-slices to utilize the hardware resources 400.
  • the one or more processors 410 may include, for example, a processor 412 and a processor 414.
  • the one or more processors 410 may be, for example, a central processing unit (CPU), a reduced instruction set computing (RISC) processor, a complex instruction set computing (CISC) processor, a graphics processing unit (GPU), a DSP such as a baseband processor, an ASIC, an FPGA, a radio-frequency integrated circuit (RFIC), another processor (including those discussed herein), or any suitable combination thereof.
  • the memory/storage devices 420 may include a main memory, disk storage, or any suitable combination thereof.
  • the memory/storage devices 420 may include but are not limited to, any type of volatile, non-volatile, or semivolatile memory such as dynamic random access memory (DRAM), static random access memory (SRAM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), Flash memory, solid-state storage, etc.
  • DRAM dynamic random access memory
  • SRAM static random access memory
  • EPROM erasable programmable read-only memory
  • EEPROM electrically erasable programmable read-only memory
  • Flash memory solid-state storage, etc.
  • the one or more communication resources 430 may include interconnection or network interface controllers, components, or other suitable devices to communicate with one or more peripheral devices 404 or one or more databases 406 or other network elements via a network 408.
  • the one or more communication resources 430 may include wired communication components (e.g., for coupling via USB, Ethernet, etc.), cellular communication components, NFC components, Bluetooth® (or Bluetooth® Low Energy) components, Wi-Fi® components, and other communication components.
  • Instructions 450 may comprise software, a program, an application, an applet, an app, or other executable code for causing at least one of the one or more processors 410 to perform any one or more of the methodologies discussed herein. Instruction 450 may reside, completely or partially, within at least one of the one or more processors 410 (e.g., within the processor’s cache memory), the memory/storage devices 420, or any suitable combination thereof. Furthermore, any portion of the instructions 450 may be transferred to the hardware resources 400 from any combination of one or more peripheral devices 404 or one or more databases 406. Accordingly, the memory of one or more processors 410, the memory/storage devices 420, one or more peripheral devices 404, and one or more databases 406 are examples of computer-readable and machine-readable media.
  • FIG. 5 illustrates another example network architecture 500.
  • the network architecture 500 may operate in a manner consistent with 3 GPP technical specifications or technical reports for 6G systems.
  • the network architecture 500 may operate concurrently with network architecture 200.
  • network architecture 500 may share one or more frequency or bandwidth resources with network architecture 200.
  • a UE e.g., UE 502
  • UE 502 may be configured to operate in both network architecture 500 and network architecture 200.
  • Such a configuration may be based on a UE including circuitry configured for communication with the frequency and bandwidth resources of both network architectures 200 and 500.
  • several elements of network architecture 500 may share one or more characteristics with elements of network architecture 200. For the sake of brevity and clarity, such elements may not be repeated in the description of network architecture 500.
  • the network architecture 500 may include a UE 502, which may include any mobile or non-mobile computing device designed to communicate with a RAN 508 via an over-the-air connection.
  • the UE 502 may be similar to, for example, UE 202.
  • the UE 502 may be but is not limited to, a smartphone, tablet computer, wearable computer device, desktop computer, laptop computer, in-vehicle infotainment, in-car entertainment device, instrument cluster, a head- up display device, onboard diagnostic device, dashtop mobile equipment, mobile data terminal, electronic engine management system, electronic/engine control unit, electronic/engine control module, embedded system, sensor, microcontroller, control module, engine management system, networked appliance, machine-type communication device, M2M or D2D device, loT device, etc.
  • the network architecture 500 may include a set of UEs coupled directly with one another via a sidelink interface.
  • the UEs may be M2M/D2D devices that communicate using physical sidelink channels such as, but not limited to, PSBCH, PSDCH, PSSCH, PSCCH, PSFCH, etc.
  • the UE 502 may be communicatively coupled with an AP such as AP 206, as described with respect to FIG. 2.
  • the RAN 508 may include one or more ANs, such as AN 208, as described with respect to FIG. 2.
  • the RAN 508 and/or the AN of the RAN 508 may be referred to as a base station (BS), a RAN node, or using some other term or name.
  • the UE 502 and the RAN 508 may be configured to communicate via an air interface that may be referred to as a sixth-generation (6G) air interface.
  • the 6G air interface may include one or more features, such as communication in terahertz (THz) or sub-THz bandwidth, or joint communication and sensing.
  • THz terahertz
  • sub-THz bandwidth may refer to a system that allows for wireless communication as well as radar-based sensing via various types of multiplexing.
  • THz or sub-THz bandwidths may refer to communication in the 80 GHz and above frequency ranges. Such frequency ranges may additionally, or alternatively, be referred to as “millimeter wave” or “mmWave” frequency ranges.
  • the RAN 508 may allow for communication between the UE 502 and a 6G core network (CN) 510. Specifically, the RAN 508 may facilitate the transmission and reception of data between the UE 502 and the 6G CN 510.
  • the 6G CN 510 may include various functions such as NSSF 550, NEF 552, NRF 554, PCF 556, UDM 558, AF 560, SMF 546, and AUSF 542.
  • the 6G CN 510 may additionally include UPF 548 and DN 539, as shown in FIG. 5.
  • the RAN 508 may include various additional functions that are in addition to, or alternative to, the functions of a legacy cellular network, such as a 4G or 5G network.
  • Two such functions may include a Compute Control Function (Comp CF) 524 and a Compute Service Function (Comp SF) 536.
  • the Comp CF 524 and the Comp SF 536 may be parts or functions of the Computing Service Plane.
  • Comp CF 524 may be a control plane function that provides functionalities such as management of the Comp SF 536, computing task context generation and management (e.g., create, read, modify, delete), interaction with the underlying computing infrastructure for computing resource management, etc.
  • Comp SF 536 may be a user plane function that serves as the gateway to interface computing service users (such as UE 502) and computing nodes behind a Comp SF instance. Some functionalities of the Comp SF 536 may include parsing computing service data received from users to compute tasks executable by computing nodes, holding service mesh ingress gateway or service API gateway, service and charging policies enforcement, performance monitoring, and telemetry collection. In some examples, a Comp SF 536 instance may serve as the user plane gateway for a cluster of computing nodes. A Comp CF 524 instance may control one or more Comp SF 536 instances. [00120] Two other such functions may include a Communication Control Function (Comm CF) 528 and a Communication Service Function (Comm SF) 538, which may be parts of the Communication Service Plane.
  • Communication Control Function (Comm CF) 528 and a Communication Service Function (Comm SF) 538, which may be parts of the Communication Service Plane.
  • the Comm CF 528 may be the control plane function for managing the Comm SF 538, communication session creation/configuration/releasing, and managing communication session context.
  • the Comm SF 538 may be a user plane function for data transport.
  • Comm CF 528 and Comm SF 538 may be considered as upgrades of SMF 246 and UPF 248, which were described with respect to a 5G system in FIG. 2.
  • the upgrades provided by the Comm CF 528 and the Comm SF 538 may enable service-aware transport. For legacy (e.g., 4G or 5G) data transport, SMF 246 and UPF 248 may still be used.
  • Two other such functions may include a Data Control Function (Data CF) 522 and a Data Service Function (Data SF) 532, which may be parts of the Data Service Plane.
  • Data CF 522 may be a control plane function and provides functionalities such as Data SF 532 management, Data service creation/configuration/releasing, Data service context management, etc.
  • Data SF 532 may be a user plane function and serve as the gateway between data service users (such as UE 502 and the various functions of the 6G CN 510) and data service endpoints behind the gateway. Specific functionalities may include parsing data service user data and forwarding it to corresponding data service endpoints, generating charging data, and reporting data service status.
  • SOCF Service Orchestration and Chaining Function
  • SOCF 520 may discover, orchestrate, and chain up communication/computing/data services provided by functions in the network.
  • SOCF 520 may interact with one or more of Comp CF 524, Comm CF 528, and Data CF 522 to identify Comp SF 536, Comm SF 538, and Data SF 532 instances, configure service resources, and generate the service chain, which could contain multiple Comp SF 536, Comm SF 538, and Data SF 532 instances and their associated computing endpoints. Workload processing and data movement may then be conducted within the generated service chain.
  • the SOCF 520 may also be responsible for maintaining, updating, and releasing a created service chain.
  • SRF service registration function
  • NRF 254 may act as the registry for network functions.
  • eSCP evolved service communication proxy
  • SCP service communication proxy
  • SICF service infrastructure control function
  • the eSCP may be related to the service communication proxy (SCP) of 5G, with the addition of user plane service communication proxy capabilities.
  • SCP service communication proxy
  • the eSCP is therefore expressed in two parts: eCSP-C 512 and eSCP-U 534, for control plane service communication proxy and user plane service communication proxy, respectively.
  • the SICF 526 may control and configure eCSP instances in terms of service traffic routing policies, access rules, load balancing configurations, performance monitoring, etc.
  • the AMF 544 may be similar to 244 but with additional functionality. Specifically, the AMF 544 may include potential functional repartition, such as moving the message forwarding functionality from the AMF 544 to the RAN 508.
  • SOEF service orchestration exposure function
  • the SOEF may be configured to expose service orchestration and chaining services to external users, such as applications.
  • the UE 502 may include an additional function that is referred to as a computing client service function (comp CSF) 504.
  • the comp CSF 504 may have both the control plane functionalities and user plane functionalities and may interact with corresponding network side functions such as SOCF 520, Comp CF 524, Comp SF 536, Data CF 522, and/or Data SF 532 for service discovery, request/response, compute task workload exchange, etc.
  • the comp CSF 504 may also work with network-side functions to decide on whether a computing task should be run on the UE 502, the RAN 508, and/or an element of the 6G CN 510.
  • the UE 502 and/or the comp CSF 504 may include a service mesh proxy 506.
  • the service mesh proxy 506 may act as a proxy for service-to- service communication in the user plane. Capabilities of the service mesh proxy 506 may include one or more of addressing, security, load balancing, and/or the like.
  • FIG. 6 depicts an example artificial intelligence (Al)-assisted communication architecture for communication between a UE 605 and a RAN 610. More specifically, as described in further detail below, AEmachine learning (ML) models may be used or leveraged to facilitate over-the-air communication between UE 605 and RAN 610.
  • Al artificial intelligence
  • ML machine learning
  • the UE 605 and the RAN 610 operate in a manner consistent with 3GPP technical specifications and/or technical reports for 6G systems.
  • the wireless cellular communication between the UE 605 and the RAN 610 may be part of or operate concurrently with network architectures 500, 200, and/or some other network described herein.
  • the UE 605 may be similar to and share one or more features with UE 202, UE 302, UE 502, UE 702, hardware resources 400, and/or some other UE or device(s), such as any of those described herein.
  • the UE 605 may be but is not limited to, a smartphone, tablet computer, wearable computer device, desktop computer, laptop computer, in-vehicle infotainment, in-car entertainment device, instrument cluster, a head-up display device, onboard diagnostic device, dashtop mobile equipment, mobile data terminal, electronic engine management system, electronic/engine control unit, electronic/engine control module, embedded system, sensor, microcontroller, control module, engine management system, networked appliance, machine-type communication device, M2M or D2D device, loT device, etc.
  • the RAN 610 may be similar to, and share one or more features with, RAN 214, RAN 508, and/or some other RAN described herein.
  • the Al-related elements of UE 605 may be similar to the Al-related elements of RAN 610.
  • a description of the various elements will be provided from the point of view of the UE 605.
  • discussion or description will apply to equally named/numbered elements of RAN 610 unless explicitly stated otherwise.
  • the UE 605 may include various elements or functions that are related to AI/ML. Such elements may be implemented as hardware, software, firmware, and/or some combination thereof. For example, one or more of the elements may be implemented as part of the same hardware (e.g., a chip or a multi-processor chip), software (e.g., a computing program), or firmware as another element.
  • the data repository 615 may be responsible for data collection and storage. Specifically, the data repository 615 may collect and store RAN configuration parameters, measurement data, performance key performance indicators (KPIs), model performance metrics, etc., for model training, update, and inference. More generally, collected data is stored in the repository. Stored data can be discovered and extracted by other elements from the data repository 615. For example, as may be seen, the inference data selection/filtering element 650 may retrieve data from the data repository 615.
  • the UE 605 may be configured to discover and request data from the data repository 615 in the RAN and vice versa. More generally, the data repository 615 of the UE 605 may be communicatively coupled with the data repository 615 of the RAN 610 so that the respective data repositories of the UE and the RAN may share collected data.
  • Another such element may be a training data selection/filtering functional block 620.
  • the training data selection/filter functional block 620 may be configured to generate training, validation, and testing datasets for model training. Training data may be extracted from the data repository 615. Data may be selected/filtered based on the specific AEML model to be trained. Data may optionally be transformed/augmented/pre-processed (e.g., normalized) before being loaded into datasets.
  • the training data selection/filter functional block 620 may label data in datasets for supervised learning. The produced datasets may then be fed into the model training functional block 625.
  • model training functional block 625 may be responsible for training and updating(re-training) AI/ML models.
  • the selected model may be trained using the fed-in datasets (including training, validation, and testing) from the training data selection/filtering functional block.
  • the model training functional block 625 may produce trained and tested AI/ML models that are ready for deployment. The produced, trained, and tested models can be stored in a model repository 635.
  • the model repository 635 may be responsible for the storage and exposure of AI/ML models (both trained and untrained). Trained/updated model(s) may be stored in the model repository 635. Model and model parameters may be discovered and requested by other functional blocks (e.g., the training data selection/filter functional block 620 and/or the model training functional block 625).
  • the UE 605 may discover and request AI/ML models from the model repository 635 of the RAN 610.
  • the RAN 610 may be able to discover and/or request AI/ML models from the model repository 635 of the UE 605.
  • the RAN 610 may configure models and/or model parameters in the model repository 635 of the UE 605.
  • model management functional block 640 may be responsible for the management of the AI/ML model produced by the model training functional block 625. Such management functions may include the deployment of a trained model, monitoring model performance, etc. In model deployment, the model management functional block 640 may allocate and schedule hardware and/or software resources for inference based on received trained and tested models.
  • the model management functional block 640 may decide to terminate the running model, start model re-training, select another model, etc.
  • the model management functional block 640 of the RAN 610 may be able to configure model management policies in the UE 605, as shown.
  • Another such element may be an inference data selection/filtering element 650.
  • the inference data selection/filtering element 650 may be responsible for generating datasets for model inference at the inference functional block 645, as described below. Specifically, inference data may be extracted from the data repository 615. The inference data selection/filtering element 650 may select and/or filter the data based on the deployed AI/ML model. Data may be transformed/augmented/pre-processed following the same transformation/augmentation/pre-processing as those in training data selection/filtering as described with respect to functional block 620. The produced inference dataset may be fed into the inference functional block 645. [00140] Another such element may be the inference functional block 645.
  • the inference functional block 645 may be responsible for executing inference as described above. Specifically, the inference functional block 645 may consume the inference dataset provided by the inference data selection/filtering element 650 and generate one or more outcomes. Such outcomes may include data analytics, actions, policies, etc. The outcome(s) may be provided to the performance measurement functional block 630.
  • the performance measurement functional block 630 may be configured to measure model performance metrics (e.g., accuracy, model bias, run-time latency, etc.) of deployed and executing models based on the inference outcome(s) for monitoring purposes.
  • Model performance data may be stored in the data repository 615.
  • FIG. 7 depicts example RAN split architecture aspects.
  • FIG. 7 shows an example network deployment including an example next generation fronthaul (NGF) deployment 700a where a UE 702 is connected to an RU 730 (also referred to as a “remote radio unit 730”, “a remote radio head 730”, or “RRH 730”) via an air interface, the RU 730 is connected to a Digital Unit (DU) 731 via a NGF interface (NGFI)-I, the DU 731 is connected to a Central Unit (CU) 732 via an NGFI-II, and the CU 732 is connected to a core network (CN) 742 via a backhaul interface.
  • NGF next generation fronthaul
  • the DU 731 may be a distributed unit (for purposes of the present disclosure, the term “DU” may refer to a digital unit and/or a distributed unit unless the context dictates otherwise).
  • UEs 702 may be the same or similar to UEs 202 and/or any other UE or user/client device discussed herein.
  • the NGF deployment 700a may be arranged in a distributed RAN (D-RAN) architecture where the CU 732, DU 731, and RU 730 reside at a cell site, and the CN 742 is located at a centralized site.
  • D-RAN distributed RAN
  • the NGF deployment 700a may be arranged in a centralized RAN (C-RAN) architecture with centralized processing of one or more baseband units (BBUs) at the centralized site.
  • C-RAN architectures the radio components are split into discrete components, which can be located in different locations.
  • the RU 730 is disposed at the cell site, and the DU 731, the CU 732, and the CN 742 are centralized or disposed at a central location.
  • the RU 730 and the DU 731 are located at the cell site, and the CU 732 and the CN 742 are at the centralized site.
  • only the RU 730 is disposed at the cell site, the DU 731 and the CU 732 are located at a RAN hub site, and the CN 742 is at the centralized site.
  • the CU 732 is a central controller that can serve or otherwise connect to one or multiple DUs 731 and/or multiple RUs 730.
  • the CU 732 is a network (logical) node hosting higher/upper layers of a network protocol functional split.
  • a CU 732 hosts the radio resource control (RRC), Service Data Adaptation Protocol (SDAP), and Packet Data Convergence Protocol (PDCP) layers of a nextgeneration NodeB (gNB), or hosts the RRC and PDCP protocol layers when included in or operating as an E-UTRA-NR gNB (en-gNB).
  • RRC radio resource control
  • SDAP Service Data Adaptation Protocol
  • PDCP Packet Data Convergence Protocol
  • gNB nextgeneration NodeB
  • en-gNB E-UTRA-NR gNB
  • the SDAP sublayer performs mapping between quality of service flows and data radio bearers (DRBs) and marking quality of service flow IDs (QFI) in both DL and UL packets.
  • the PDCP sublayer performs transfers user plane or control plane data; maintains PDCP sequence numbers (SNs); header compression and decompression using the Robust Header Compression (ROHC) and/or Ethernet Header Compression (EHC) protocols; ciphering and deciphering; integrity protection and integrity verification; provides timer based SDU discard; routing for split bearers; duplication and duplicate discarding; reordering and in-order delivery; and/or out-of-order delivery.
  • ROHC Robust Header Compression
  • EHC Ethernet Header Compression
  • a CU 732 terminates respective Fl interfaces connected with corresponding DUs 731 (see, e.g., [TS38401]).
  • a CU 732 may include a CU-control plane (CP) entity (referred to herein as “CU-CP 732”) and a CU-user plane (UP) entity (referred to herein as “CU-UP 732”).
  • the CU-CP 732 is a logical node hosting the RRC layer and the control plane part of the PDCP protocol layer of the CU 732 (e.g., a gNB-CU for an en-gNB or a gNB).
  • the CU-CP terminates an El interface connected with the CU-UP, and the F 1 -C interface is connected with a DU 731.
  • the CU-UP 732 is a logical node hosting the user plane part of the PDCP protocol layer (e.g., for a gNB-CU 732 of an en-gNB), and the user plane part of the PDCP protocol layer and the SDAP protocol layer (e.g., for the gNB-CU 732 of a gNB).
  • the CU-UP 732 terminates the El interface connected with the CU-CP 732 and the F 1 -U interface connected with a DU 731.
  • the DU 731 controls radio resources, such as time and frequency bands, locally in real time and allocates resources to one or more UEs.
  • the DUs 731 are network (logical) nodes hosting middle and/or lower layers of the network protocol functional split.
  • a DU 731 hosts the radio link control (RLC) medium access control (MAC), and high-physical (PHY) layers of the gNB or en-gNB, and its operation is at least partly controlled by the CU 732.
  • the RLC sublayer operates in one or more of a Transparent Mode (TM), Unacknowledged Mode (UM), and Acknowledged Mode (AM).
  • TM Transparent Mode
  • UM Unacknowledged Mode
  • AM Acknowledged Mode
  • the RLC sublayer performs transfer of upper layer PDUs; sequence numbering independent of the one in PDCP (UM and AM); error correction through ARQ (AM only); segmentation (AM and UM) and resegmentation (AM only) of RLC SDUs; reassembly of SDU (AM and UM); duplicate detection (AM only); RLC SDU discard (AM and UM); RLC reestablishment; and/or protocol error detection (AM only).
  • the MAC sublayer performs mapping between logical channels and transport channels; multiplexing/demultiplexing of MAC SDUs belonging to one or different logical channels into/from transport blocks (TB) delivered to/from the physical layer on transport channels; scheduling information reporting; error correction through HARQ (one HARQ entity per cell in case of CA); priority handling between UEs by means of dynamic scheduling; priority handling between logical channels of one UE by means of logical channel prioritization; priority handling between overlapping resources of one UE; and/or padding.
  • HARQ one HARQ entity per cell in case of CA
  • a DU 731 can host a Backhaul Adaptation Protocol (BAP) layer (see e.g., 3GPP TS 38.340 V16.5.0 (2021-07-07)) and/or an Fl application protocol (F1AP) (see e.g., 3GPP TS 38.470 V16.5.0 (2021-07-01)), such as when the DU 731 is operating as an Integrated Access and Backhaul (IAB) node.
  • BAP Backhaul Adaptation Protocol
  • F1AP Fl application protocol
  • IAB Integrated Access and Backhaul
  • One DU 731 supports one or multiple cells, and one cell is supported by only one DU 731.
  • a DU 731 terminates the F 1 interface connected with a CU 732.
  • the DU 731 may be connected to one or more RRHs/RUs 730.
  • the RU 730 is a transmission/reception point (TRP) or other physical node that handles radiofrequency (RF) processing functions.
  • the RU 730 is a network (logical) node hosting lower layers based on a lower-layer functional split.
  • the RU 730 hosts low-PHY layer functions and RF processing of the radio interface based on a lower layer functional split.
  • the RU 730 may be similar to 3GPP’s transmission/reception point (TRP) or RRH but specifically includes the Low- PHY layer. Examples of low-PHY functions include fast Fourier transform (FFT), inverse FFT (IFFT), physical random access channel (PRACH) extraction, and the like.
  • FFT fast Fourier transform
  • IFFT inverse FFT
  • PRACH physical random access channel
  • Each of the CUs 732, DUs 731, and RUs 730 are connected through respective links, which may be any suitable wireless and/or wired (e.g., fiber, copper, and the like) links.
  • various combinations of the CU 732, DU 731, and RU 730 may correspond to one or more of the ANs 208 of FIG. 2. Additional aspects of CUs 732, DUs 731, and RUs 730 are discussed in [O-RAN], [TS38401], [TS38410], and [TS38300], the contents of each of which are hereby incorporated by reference in their entireties.
  • a fronthaul gateway function may be disposed between the DU 731 and the RU/RRU 730 (not shown by FIG. 7), where the interface between the DU 731 and the FHGW is an Open Fronthaul (e.g., Option 7-2x) interface, the interface between FHGW function and the RU/RRU 730 is an Open Fronthaul (e.g., Option 7-2x) interface or any other suitable interface (e.g., option 7, option 8, or the like) including those that do not support Open Fronthaul (e.g., Option 7-2x).
  • the FHGW may be packaged with one or more other functions (e.g., Ethernet switching and/or the like) in a physical device or appliance.
  • a RAN controller may be communicatively coupled with the CU 732 and/or the DU 731.
  • NGFI also referred to as “xHaul” or the like
  • NGFI is a two-level fronthaul architecture that separates the traditional RRU 730 to BBU connectivity in the C-RAN architecture into two levels, namely levels I and II.
  • Level I connects the RU 730 via the NGFLI to the DU 731
  • level II connects the DU 731 via the NGFI-II to the CU 732, as shown by deployment 700a in FIG. 7.
  • the NGFLI and NGFLII connections may be wired connections or wireless connections, which may utilize any suitable RAT such as any of those discussed herein.
  • the purpose of the two-level architecture is to distribute (split) the RAN node protocol functions between CU 732 and DU 731 such that latencies are relaxed, giving more deployment flexibility.
  • the NGFLI interfaces with the lower layers of the function split, which have stringent delay and data rate requirements.
  • NGFLII interfaces with higher layers of the function split relative to the layers of the NGFLI, relaxing the requirements for the fronthaul link.
  • Examples of the NGFI fronthaul interfaces and functional split architectures include 0-RAN 7.2x fronthaul (see e.g., [O-RAN.WG9.XPSAAS] and [O-RAN-WG4.CUS.0]), Enhanced Common Radio Interface (CPRI) based C-RAN fronthaul (see e.g., Common Public Radio Interface: eCPRI Interface Specification, eCPRI Specification v2.0 (2019-05-10), Common Public Radio Interface: Requirements for the eCPRI Transport Network, eCPRI Transport Network vl.2 (2018-06-25), and [O-RAN-WG4.CUS.0]), Radio over Ethernet (RoE) based C-RAN fronthaul (see, e.g., IEEE Standard for Radio over Ethernet Encapsulations and Mappings, IEEE Standards Association, IEEE 1914.3-2018 (05 Oct.
  • the deployment 700a may implement a low-level split (LLS) (also referred to as a “Lower Layer Functional Split 7-2x” or “Split Option 7-2x”) that runs between the RU 730 (e.g., an O-RU in O-RAN architectures) and the DU 731 (e.g., an O-DU in O-RAN architectures) (see, e.g., [O-RAN.WG7.IPC-HRD-Opt7-2], [O-RAN. WG7.OMAC-HRD], [O- RAN.WG7.OMC-HRD-Opt7-2], [O-RAN.WG7.OMC-HRD-Opt7-2]).
  • LLC low-level split
  • the NGFLI is the Open Fronthaul interface described in the O-RAN Open Fronthaul Specification (see, e.g., [O-RAN-WG4.CUS.0]).
  • Other LLS options may be used, such as the relevant interfaces described in other standards or specifications such as, for example, the 3GPP NG-RAN functional split (see e.g., [TS38401] and 3GPP TR 38.801 vl4.0.0 (2017-04- 03)), the Small Cell Forum for Split Option 6 (see e.g., 5G small cell architecture and product definitions: Configurations and Specifications for companies deploying small cells 2020-2025, Small Cell Forum, document 238.10.01 (05 Jul.
  • the CUs 732, DUs 731, and/or RUs 730 may be IAB nodes.
  • IAB enables wireless relaying in an NG-RAN where a relaying node (referred to as an “lAB-node”) supports access and backhauling via 3GPP 5G/new radio (NR) links/interfaces.
  • the terminating node of NR backhauling on the network side is referred to as an “lAB-donor,” which represents a RAN node (e.g., a gNB) with additional functionality to support IAB.
  • Backhauling can occur via a single or multiple hops.
  • IAB nodes that are connected to an lAB-donor via one or multiple hops form a directed acyclic graph (DAG) topology with the lAB-donor as its root.
  • DAG directed acyclic graph
  • the lAB-donor performs centralized resource, topology, and route management for the IAB topology.
  • the IAB architecture is shown and described in [TS38300],
  • the NGF deployment 700a shows the CU 732, DU 731, RRH 730, and CN 742 as separate entities, in other implementations, some or all of these network nodes can be bundled, combined, or otherwise integrated into a single device or element, including collapsing some internal interfaces (e.g., Fl- C, Fl-U, El, E2, and the like).
  • some internal interfaces e.g., Fl- C, Fl-U, El, E2, and the like.
  • any of the aforementioned example implementations involving the CU 732 may also include integrating the CU-CP 732 and CP-UP
  • FIG. 7 also shows an example RAN disaggregation deployment 700b (also referred to as “disaggregated RAN 700b”) where the UE 702 is connected to the RRH 730, and the RRH 730 is communicatively coupled with one or more of the RAN functions (RANFs) 1-N (where N is a number).
  • the RANFs 1-N are disaggregated and distributed geographically across several component segments and network nodes.
  • each RANF 1-N is a software (SW) element operated by a physical compute node
  • the RRH 730 includes radiofrequency (RF) circuitry (e.g., an RF propagation module for a particular RAT and/or the like).
  • RF radiofrequency
  • the RANF 1 is operated on a physical compute node that is co-located with the RRH 730, and the other RANFs are disposed at locations further away from the RRH 730.
  • CN 742 is also disaggregated into CN NFs 1-x (where x is a number) in the same or similar manner as the RANFs 1-N. However, in other implementations, the CN 742 is not disaggregated.
  • Network disaggregation involves the separation of networking equipment into functional components and allowing each component to be individually deployed. This may encompass the separation of SW elements (e.g., NFs) from specific HW elements and/or using APIs to enable software-defined network (SDN) and/or NF virtualization (NFV).
  • SW elements e.g., NFs
  • SDN software-defined network
  • NFV NF virtualization
  • RAN disaggregation involves network disaggregation and virtualization of various RANFs (e.g., RANFs 1-N in FIG. 7). The RANFs 1-N can be placed in different physical sites in various topologies in an RAN deployment based on the use case.
  • Disaggregation offers a common or uniform RAN platform capable of assuming a distinct profile depending on where it is deployed. This allows fewer fixed-function devices and a lower total cost of ownership in comparison with existing RAN architectures.
  • Example RAN disaggregation frameworks are provided by Telecom Infra Project (TIP) OpenRANTM, Cisco® Open vRANTM, [O-RAN], Open Optical & Packet Transport (OOPT), Reconfigurable Optical Add Drop Multiplexer (RO ADM), and/or the like.
  • TIP Telecom Infra Project
  • IP Telecom Infra Project
  • OOPT Open Optical & Packet Transport
  • RO ADM Reconfigurable Optical Add Drop Multiplexer
  • the RANFs 1-N disaggregate RAN HW and SW with commercial off-the-shelf (COTS) HW and open interfaces (e.g., NGFI-I and NGFI-II and the like).
  • COTS commercial off-the-shelf
  • each RANF 1-N may be a virtual BBU or vRAN controller operating on COTS compute infrastructure with HW acceleration for BBU/vRANFs.
  • the RANFs 1-N disaggregate layers of one or more RAT protocol stacks.
  • RANF l is a DU 731 operating on the first COTS compute infrastructure with HW acceleration for BBU/vRANFs
  • RANF 2 is a virtual CU 732 operating on the second COTS compute infrastructure.
  • the RANFs 1-N disaggregate control plane and user plane functions.
  • the RANF l is a DU 731 operating on COTS compute infrastructure with HW acceleration for BBU/vRANFs
  • RANF 2 is a virtual CU-CP 732 operating on COTS compute infrastructure
  • a third RANF e.g., RANF 3 (not shown by Figure 7)
  • RANF 3 is a virtual CU-UP 732 operating on the same or different COTS compute infrastructure as the virtual CU-CP 732.
  • one or more CN NFs 1-x may be CN-UP functions
  • one or more other CN NFs 1-x may be CN-CP functions.
  • the RANFs 1-N disaggregate layers of a [IEEE802] RAT.
  • the RRH 730 implements a WiFi PHY layer
  • RANF 1 implements a WiFi MAC sublayer
  • RANF 1 implements a WiFi logical link control (LLC) sublayer
  • RANF 2 implements one or more WiFi upper layer protocols (e.g., network layer, transport layer, session layer, presentation layer, and/or application layer), and so forth.
  • WiFi upper layer protocols e.g., network layer, transport layer, session layer, presentation layer, and/or application layer
  • the RANFs 1-N disaggregate different 0-RAN RANFs, including E2SMs.
  • RANF 1 implements the near-RT RIC
  • RANF 2 implements the E2SM-KPM
  • RANF 3 implements the E2SM-CCC
  • RANF 4 implements the E2SM RAN control
  • RANF 5 implements the E2SM-NI
  • RANF 6 implements functions for providing Al services, and so forth.
  • the lower layers of the RAN protocol stack can be characterized by real-time (RT) functions and relatively complex signal processing algorithms, and the higher layers of the RAN protocol stack can be characterized by non-RT functions.
  • the RT functions and signal processing algorithms can be implemented in DUs 731 and/or RRHs 730 either using purpose-built network elements or in COTS hardware augmented with purpose-built HW accelerators.
  • FIG. 7 also shows various functional split options 700c for both DL and UL directions.
  • the traditional RAN is an integrated network architecture based on a distributed RAN (D-RAN) model, where D-RAN integrates all RANFs into a few network elements.
  • D-RAN distributed RAN
  • the disaggregated RAN architecture provides flexible function split options to overcome various drawbacks of the D-RAN model.
  • the disaggregated RAN breaks up the integrated network system into several function components that can then be individually re-located as needed without hindering their ability to work together to provide holistic network services.
  • the split options 700c are mostly split between the CU 732 and the DU 731 but can include a split between the CU 732, DU 731, and RU 730.
  • protocol entities on the left side of the figure are included in the RANF implementing the CU 732, and the protocol entities on the right side of the figure are included in the RANF implementing the DU 731.
  • the Option 2 function split includes splitting non-RT processing (e.g., RRC and PDCP layers) from RT processing (e.g., RLC, MAC, and PHY layers), where the RANF implementing the CU 732 performs network functions of the RRC and PDCP layers, and the RANF implementing the DU 731 performs the baseband processing functions of the RLC (including high-RLC and low-RLC), MAC (including high-MAC and low-MAC), and PHY layers.
  • the PHY layer is further split between the DU 731 and the RU 730, where the RANF implementing the DU 731 performs the high-PHY layer functions, and the RU 730 handles the low-PHY layer functions.
  • the Low-PHY entity may be operated by the RU 730 regardless of the selected functional split option.
  • the RANF implementing the CU 732 can connect to multiple DU 731 (e.g., the CU 732 is centralized), which allows RRC and PDCP anchor change to be eliminated during a handover across DUs 731 and allows the centralized CU 732 to pool resources across several DUs 731.
  • the option 2 function split can improve resource efficiencies.
  • the particular function split option used may vary depending on the service requirements and network deployment scenarios and may be implementation-specific.
  • each protocol stack entity is operated by a respective RANF (e.g., a first RANF operates the RRC layer, a second RANF operates the PDCP layer, a third RANF operates the high-RLC layer, and so forth until an eighth RANF operates the low-PHY layer).
  • a respective RANF e.g., a first RANF operates the RRC layer, a second RANF operates the PDCP layer, a third RANF operates the high-RLC layer, and so forth until an eighth RANF operates the low-PHY layer.
  • At least one of the components outlined in one or more of the preceding figures may be configured to perform one or more operations, techniques, processes, and/or methods as discussed herein (including the examples listed in the examples sections below).
  • baseband circuitry associated with one or more of the preceding figures may be configured to operate in accordance with one or more of the examples set forth below.
  • circuitry associated with a UE, base station, satellite, network element, etc., as described above in connection with one or more of the preceding figures may be configured to operate in accordance with one or more of the examples set forth below in the example section.
  • application may refer to a complete and deployable package or environment to achieve a specific function in an operational environment.
  • AI/ML application may be an application that contains some artificial intelligence (AI)/machine learning (ML) models and application-level descriptions. In some embodiments, an AI/ML application may be used to configure or implement one or more of the disclosed aspects.
  • machine learning or “ML” refers to the use of computer systems implementing algorithms and/or statistical models to perform a specific task(s) without using explicit instructions but instead relying on patterns and inferences. ML algorithms build or estimate mathematical model(s) (referred to as “ML models” or the like) based on sample data (referred to as “training data,” “model training information,” or the like) to make predictions or decisions without being explicitly programmed to perform such tasks.
  • an ML algorithm is a computer program that learns from experience concerning some task and some performance measure
  • an ML model may be any object or data structure created after an ML algorithm is trained with one or more training datasets. After training, an ML model may be used to make predictions on new datasets.
  • ML algorithm refers to concepts different from the term “ML model,” these terms, as discussed herein, may be used interchangeably for the present disclosure.
  • ML model may also refer to ML methods and concepts used by an ML-assisted solution.
  • An “ML-assisted solution” is a solution that addresses a specific use case using ML algorithms during operation.
  • ML models include supervised learning (e.g., linear regression, k-nearest neighbor (KNN), decision tree algorithms, support machine vectors, Bayesian algorithm, ensemble algorithms, etc.), unsupervised learning (e.g., K-means clustering, principal component analysis (PCA), etc.), reinforcement learning (e.g., Q-learning, multi-armed bandit learning, deep RL, etc.), neural networks, and the like.
  • ML pipeline is a set of functionalities, functions, or functional entities specific to an ML- assisted solution; an ML pipeline may include one or several data sources in a data pipeline, a model training pipeline, a model evaluation pipeline, and an actor.
  • the “actor” is an entity that hosts an ML-assisted solution using the output of the ML model inference).
  • ML training host refers to an entity, such as a network function, that hosts the training of the model.
  • ML inference host refers to an entity, such as a network function, that hosts the model during inference mode (which includes both the model execution and any online learning, if applicable).
  • the ML host informs the actor about the output of the ML algorithm, and the actor decides on an action (an “action” is performed by an actor as a result of the output of an ML-assisted solution).
  • model inference information refers to information used as an input to the ML model for determining inference(s); the data used to train an ML model and the data used to determine inferences may overlap, however, “training data” and “inference data” refer to different concepts.
  • the present disclosure defines or otherwise provides SRS configurations, such as techniques for SRS transmission with insertion loss compensation.
  • SRS configurations such as techniques for SRS transmission with insertion loss compensation.
  • the following discussion may be applicable to any type of UE or base station, such as any of the UEs or base stations in FIGS. 1 A-7.
  • the 5G NR Sounding Reference Signals are transmitted by the UE to help the gNB (also referred to as base station or BS) to perform the channel state information (CSI) estimation for the link between the UE and the gNB.
  • the gNB also referred to as base station or BS
  • CSI channel state information
  • TDD time division duplex
  • the role of SRS is even more important, and the gNB can utilize the SRS measurements for both UL and DL CSI estimation and scheduling, exploiting the TDD channel reciprocity property.
  • the SRS insertion loss (IL) is an RF impairment that results in a certain power imbalance of SRS signals transmitted from different transmit (TX) chains.
  • the gNB uses the respective SRS estimates to derive the downlink (DL) channel estimates, and there may be a mismatch between DL channel estimates using SRS for APs with insertion loss (even in case of perfect channel estimation) and the actual DL channels corresponding to different UE antennas (as the power imbalance at the TX side is typically much larger than the imbalance at the RX side), which leads to an incorrect DL CSI estimation and as result in the degradation of overall DL system performance.
  • the existing 3GPP specifications are defined under an assumption of the worst-case implementations in terms of SRS IL, which may result in sub-optimal insertion loss handling during SRS transmissions.
  • the disclosed techniques address the problem of insertion loss impact on SRS transmissions during the UE sounding procedure for DL CSI acquisition. More specifically, the disclosed techniques include a mechanism for more efficient handling of the insertion loss compensation at the UE side by providing additional UE capability signalling and modification of the SRS configured transmit power calculation, ensuring that the UE fully utilizes its power amplifier capabilities for insertion loss compensation.
  • TSs 3GPP technical specifications
  • the proposed techniques include UE capability signalling of SRS insertion loss for SRS antenna port (AP) switching and uplink (UL) SRS configured transmit power derivation based on indicated SRS insertion loss capability.
  • SRSs defined in 3GPP TS 38.211 are transmitted by the UE to help the gNB perform the channel quality estimation (e.g., channel state information or CSI) for the UE.
  • the CSI characterizes the propagation conditions for the UE-to-gNB link, including the combined effect of multipath fading, Doppler fading, and power loss of the transmitted signal.
  • the gNB can utilize SRS measurements for both UL and DL CSI estimation and scheduling, exploiting the TDD channel reciprocity property.
  • the number of UE receive (RX) chains/branches/antennas/APs is larger than the number of UE TX chains/ branches/antennas/APs, which can be used at a given time.
  • RX UE receive
  • UE TX chains/ branches/antennas/APs which can be used at a given time.
  • the SRS are transmitted from different antennas or subsets of antennas in a TDM manner (e.g., for the case of a UE with 4 antennas, the SRS is transmitted from APs 1, 2, 3 and 4 in four different OFDM symbols or from APs 1,2 and 3,4 in 2 different OFDM symbols).
  • FIG. 8 illustrates a diagram 800 of an SRS antenna port (AP) switching procedure, in accordance with some aspects.
  • FIG. 8 A simplified example of SRS AP switching for the case of 1TX chain and 4RX chains is shown in FIG. 8.
  • Transmissions from SRS APs 0, 1, 2, and 3 are performed in different OFDM symbols (e.g., symbols 10, 11, 12, and 13).
  • the transmissions for AP 0, 1, 2, and 3 have power P0, Pl, P2, and P3, respectively. Due to insertion loss effects, the actual power for APs 1, 2, and 3 is reduced by IL1, IL2, and IL3, respectively. Under ideal circumstances, it is expected that the transmission power from all APs shall be identical, but it may not be possible for practical implementations.
  • more potential options for SRS AP switching patterns can be configured, including scenarios with different numbers of TX and RX chains to ensure that the feature is applicable for different UE implementations (i.e., UEs with 2, 4, 6, and 8 RX chains).
  • the gNB estimates the propagation channel based on SRS transmitted from different APs, and the respective estimates are further used for DL CSI calculation in TDD systems.
  • the gNB uses the respective SRS estimates to derive the DL channel estimates, and there may be a mismatch between DL channel estimates using SRS for APs with insertion loss (even in case of perfect channel estimation) and the actual DL channels corresponding to different UE antennas (as the power imbalance at the TX side is typically much larger than the imbalance at the RX side), which leads to an incorrect DL CSI estimation and as result in the degradation of overall DL system performance.
  • the IL of the diversity branches can differ from that of the main branch.
  • the aforementioned IL imbalance is called SRS IL imbalance, which can be caused by the RF switch and trace loss difference.
  • SRS IL imbalance can cause non-negligible performance degradation, especially under MU-MIMO and/or high-rank scenarios.
  • the anticipated UE behavior in terms of SRS IL (or Tx power imbalance) compensation during SRS transmissions can be configured based on the following options:
  • Option 1 The UE does not make Tx power imbalance compensation.
  • Option 2 The UE performs Tx power imbalance compensation up to its maximum capabilities in non-power-limited conditions (i.e., applies power compensation in case there is sufficient power to do so). For example, in case of 20 dBm configured Tx power and 8 dB SRS IL, the UE can compensate 3 dB loss in case of 23 dBm maximum output power.
  • Option 3 Configuration up to UE implementation (the UE can choose whether and when to apply compensation).
  • the legacy UE behavior can be understood based on the current specifications of the SRS power control mechanism in 3GPP TS 38.213 and the configured maximum output Tx power in 3 GPP TS 38.101-1.
  • the SRS transmission power in TS 38.213 is defined in a way that unless the SRS transmission power exceeds the configured maximum output power PcMAx,f,c limit, the actual SRS transmission power depends on LI power control parameters only, such as pO for active UL BW, SRS bandwidth, pathloss, and others. It can be observed that the SRS insertion loss is not taken into consideration, and the UE is supposed to compensate for any SRS insertion loss as long as the total power is below PCMAX ⁇ C, which is defined based on the following formula listed in Table 1 :
  • PCMAX ⁇ C The UE configured maximum output power parameter PCMAX ⁇ C is defined in TS 38.101-1 clause 6.2.4. It can be observed that PCMAX is not a predefined fixed value and represents a certain range of values, which gives flexibility to possible UE implementations.
  • the power ranges that can be configured are listed in Table 2 below.
  • FIG. 9 and FIG. 10 illustrate corresponding graphs 900 and 1000 of SRS transmission power levels and effective SRS AP power imbalances, in accordance with some aspects.
  • FIG. 9 and FIG. 10 provide an illustration of the SRS transmission power levels and effective SRS power imbalance between ports as a function of PSRS.PC under different assumptions of a PCMAX selection (e.g., equal to either PCMAX, H or PCMAX, L).
  • the UE SRS IL ATR X SRS,UE
  • the 3GPP specifications e.g., ATRXSRS
  • PCMAX The existing definition of PCMAX implies that UE performs at least partial SRS IL compensation in the power range of PCMAX, L ⁇ PSRS,PC ⁇ PCMAX, H.
  • the effective SRS AP power imbalance may depend on the selection of the PCMAX level.
  • the description below includes a framework to handle the SRS insertion loss when the UE has a better SRS insertion loss than the one captured in the current specification.
  • SRS insertion loss compensation is based on static UE capability signalling based on the following configurations.
  • Aspect #1-1 UE capability signalling on SRS IL associated with SRS AP switching.
  • the UE provides capability RRC signalling to the gNB to inform on the SRS insertion loss associated with SRS AP switching.
  • the capability can have the following signalling granularity: per band, per feature set (per FS), or per Feature Set Per Carrier (per FSPC).
  • Option 1 A single SRS IL value can be provided to characterise the SRS IL for a specific switching pattern and would characterise the loss corresponding to any transmissions not involving the main branch (port 0).
  • Option 2 Different SRS IL values can be provided for each or a subset of SRS resources other than the first one within each SRS resource set used for antenna switching and corresponding to SRS TX switching patterns.
  • the indication may include the maximum SRS IL value in units of dB.
  • the indicated SRS IL cannot exceed the worst-case values ATR X SRS provided in 3GPP TS 38.101-1.
  • the disclosed techniques can be based on adjusting the calculation of UE configured maximum output power parameter PCMAX C defined in 3 GPP TS 38.101-1 to account for UE-specific SRS IL value (ATR X SRS,UE).
  • UE-specific ATR X SRS,UE value can be used instead of the existing worst-case ATR X SRS for calculation of PCMAX , e.g.
  • the UE configured maximum output power parameter PCMAX ⁇ C can be determined based on the formula listed in Table 5 below.
  • the ATRXSRS,UE is the SRS IL value described in
  • Aspect #1-1 and corresponding to the specific SRS transmission (e.g., such as a specific SRS switching pattern or SRS resource within each SRS resource set).
  • a dedicated new UE capability can be introduced to indicate whether UE supports the new method for SRS configured transmission power adjustment based on UE-specific SRS IL value (e.g., denoted as “SRS EnhPC”).
  • the capability can be associated with SRS IL capability signalling in Aspect #1-1.
  • the existing ATR X SRS value can be used for the calculation of PCMAX LXC .
  • the ATRXSRS value can be used for the calculation of PCMAX LXC .
  • the disclosed techniques can be further extended to LTE and/or 6G technologies.
  • the disclosed techniques can be further extended to other physical channels and/or reference signals.
  • a generic insertion loss capability can be considered instead of SRS IL.
  • the disclosed techniques can be applicable to UEs with a different number of RX chains, including at least 2, 4, 6, and 8 RX chains.
  • a method of NR SRS transmissions with SRS AP switching where the UE provides capability RRC signalling to the gNB to inform on the SRS insertion loss associated with SRS AP switching and adjusts the configured transmit power based on indicated capability.
  • the UE provides capability RRC signalling to the gNB to inform on the SRS insertion loss associated with SRS AP switching.
  • the capability can have the following signalling granularity: per band, per feature set (per FS), or per Feature Set Per Carrier (per FSPC).
  • SRS IL capabilities are provided for different SRS TX switching patterns supported by UE, which are indicated by existing UE capabilities supportedSRS-TxPortSwitch and supportedSRS- TxPortSwitchBeyond4Rx.
  • a single SRS IL value is provided to characterise the SRS IL for a specific switching pattern and characterise the loss corresponding to any transmissions not involving the main AP branch.
  • different SRS IL values are provided for each or a subset of SRS resources other than the first one within each SRS resource set used for antenna switching and corresponding to SRS TX switching patterns.
  • the UE capability indication included the maximum SRS IL value in units of dB.
  • the indicated SRS IL does not exceed the worst-case values ATR X SRS provided in TS 38.101-1.
  • the UE calculates the configured maximum output power PCMAX C for SRS transmissions based on the UE-specific SRS IL value (ATR X SRS,UE) based on the following equation:
  • PcMAX_L,f,c MIN ⁇ PEMAX,C — ATC,C, (PpowerClass — APpowerClass + APpowerBoost) — MAX(MAX(MPR C +AMPR C , A-MPR C )+ ATI B;C + AT C c + ATRXSRS,UE, P-MPRc) ⁇ .
  • the ATR X SRS,UE is the SRS IL is the SRS insertion loss associated with SRS AP switching indicated via UE capability signalling.
  • a dedicated UE capability is introduced to indicate whether the UE supports the new method for SRS configured transmission power adjustment based on UE-specific SRS IL value (e.g., denoted as SRS EnhPC).
  • the capability is associated with the SRS IL capability signalling discussed above.
  • FIG. 11 illustrates a block diagram of a communication device such as an evolved Node-B (eNB), a new generation Node-B (gNB) (or another RAN node such as a base station), a network-controlled repeater (NCR), an access point (AP), a wireless station (STA), a mobile station (MS), or user equipment (UE), in accordance with some aspects and to perform one or more of the techniques disclosed herein.
  • the communication device 1100 may operate as a standalone device or may be connected (e.g., networked) to other communication devices.
  • Circuitry e.g., processing circuitry
  • circuitry is a collection of circuits implemented in tangible entities of the device 1100 that include hardware (e.g., simple circuits, gates, logic, etc.). Circuitry membership may be flexible over time. Circuitries include members that may, alone or in combination, perform specified operations when operating.
  • the circuitry hardware may be immutably designed to carry out a specific operation (e.g., hardwired).
  • the hardware of the circuitry may include variably connected physical components (e.g., execution units, transistors, simple circuits, etc.), including a machine-readable medium physically modified (e.g., magnetically, electrically, moveable placement of invariant massed particles, etc.) to encode instructions of the specific operation.
  • the underlying electrical properties of a hardware constituent are changed, for example, from an insulator to a conductor or vice versa.
  • the instructions enable embedded hardware (e.g., the execution units or a loading mechanism) to create members of the circuitry in hardware via the variable connections to carry out portions of the specific operation when in operation.
  • the machine-readable medium elements are part of the circuitry or are communicatively coupled to the other components of the circuitry when the device is operating.
  • any of the physical components may be used in more than one member of more than one circuitry.
  • execution units may be used in the first circuit of a first circuitry at one point in time and reused by a second circuit in the first circuitry or by a third circuit in a second circuitry at a different time. Additional examples of these components with respect to the device 1100 follow.
  • the device 1100 may operate as a standalone device or may be connected (e.g., networked) to other devices.
  • the communication device 1100 may operate in the capacity of a server communication device, a client communication device, or both in serverclient network environments.
  • the communication device 1100 may act as a peer communication device in a peer-to-peer (P2P) (or other distributed) network environment.
  • P2P peer-to-peer
  • the communication device 1100 may be a UE, eNB, PC, tablet PC, STB, PDA, mobile telephone, smartphone, a web appliance, network router, a switch or bridge, or any communication device capable of executing instructions (sequential or otherwise) that specify actions to be taken by that communication device.
  • communication device shall also be taken to include any collection of communication devices that individually or jointly execute a set (or multiple sets) of instructions to perform any one or more of the methodologies discussed herein, such as cloud computing, software as a service (SaaS), and other computer cluster configurations.
  • cloud computing software as a service
  • SaaS software as a service
  • Examples, as described herein, may include, or may operate on, logic or several components, modules, or mechanisms.
  • Modules are tangible entities (e.g., hardware) capable of performing specified operations and may be configured or arranged in a particular manner.
  • circuits may be arranged (e.g., internally or with respect to external entities such as other circuits) in a specified manner as a module.
  • the whole or part of one or more computer systems e.g., a standalone, client, or server computer system
  • one or more hardware processors may be configured by firmware or software (e.g., instructions, an application portion, or an application) as a module that operates to perform specified operations.
  • the software may reside on a communication device-readable medium.
  • the software when executed by the underlying hardware of the module, causes the hardware to perform the specified operations.
  • module is understood to encompass a tangible entity, be that an entity that is physically constructed, specifically configured (e.g., hardwired), or temporarily (e.g., transitorily) configured (e.g., programmed) to operate in a specified manner or to perform part or all of any operation described herein.
  • each of the modules needs not to be instantiated at any one moment in time.
  • the modules comprise a general- purpose hardware processor configured using the software
  • the general -purpose hardware processor may be configured as respective different modules at different times.
  • the software may accordingly configure a hardware processor, for example, to constitute a particular module at one instance of time and to constitute a different module at a different instance of time.
  • the communication device e.g., UE 1100 may include a hardware processor 1102 (e.g., a central processing unit (CPU), a graphics processing unit (GPU), a hardware processor core, or any combination thereof), a main memory 1104, a static memory 1106, and a storage device 1116 (e.g., hard drive, tape drive, flash storage, or other block or storage devices), some or all of which may communicate with each other via an interlink 1108 (e.g., a bus).
  • a hardware processor 1102 e.g., a central processing unit (CPU), a graphics processing unit (GPU), a hardware processor core, or any combination thereof
  • main memory 1104 e.g., a main memory 1104, a static memory 1106, and a storage device 1116 (e.g., hard drive, tape drive, flash storage, or other block or storage devices), some or all of which may communicate with each other via an interlink 1108 (e.g., a bus).
  • an interlink 1108 e.
  • the communication device 1100 may further include a display device 1110, an input device 1112 (e.g., a keyboard), and a user interface (UI) navigation device 1114 (e.g., a mouse).
  • the display device 1110, input device 1112, and UI navigation device 1114 may be a touchscreen display.
  • the communication device 1100 may additionally include a signal generation device 1118 (e.g., a speaker), a network interface device 1120, and one or more sensors 1121, such as a global positioning system (GPS) sensor, compass, accelerometer, or another sensor.
  • GPS global positioning system
  • the communication device 1100 may include an output controller 1128, such as a serial (e.g., universal serial bus (USB), parallel, or other wired or wireless (e.g., infrared (IR), near field communication (NFC), etc.) connection to communicate or control one or more peripheral devices (e.g., a printer, card reader, etc.).
  • a serial e.g., universal serial bus (USB), parallel, or other wired or wireless (e.g., infrared (IR), near field communication (NFC), etc.) connection to communicate or control one or more peripheral devices (e.g., a printer, card reader, etc.).
  • USB universal serial bus
  • IR infrared
  • NFC near field communication
  • the storage device 1116 may include a device-readable medium 1122, on which is stored one or more sets of data structures or instructions 1124 (e.g., software) embodying or utilized by any one or more of the techniques or functions described herein.
  • registers of the hardware processor 1102, the main memory 1104, the static memory 1106, and/or the storage device 1116 may be, or include (entirely or at least partially), the device-readable medium 1122, on which is stored the one or more sets of data structures or instructions 1124, embodying or utilized by any one or more of the techniques or functions described herein.
  • one or any combination of the hardware processor 1102, the main memory 1104, the static memory 1106, or the storage device 1116 may constitute the device-readable medium 1122.
  • the term “device-readable medium” is interchangeable with “computer-readable medium” or “machine-readable medium.” While the device-readable medium 1122 is illustrated as a single medium, the term “communication device-readable medium” may include a single medium or multiple media (e.g., a centralized or distributed database and/or associated caches and servers) configured to store the instructions 1124.
  • communication device-readable medium is inclusive of the terms “machine- readable medium” or “computer-readable medium” and may include any medium that is capable of storing, encoding, or carrying instructions (e.g., instructions 1124) for execution by the communication device 1100 and that causes the communication device 1100 to perform any one or more of the techniques of the present disclosure, or that is capable of storing, encoding or carrying data structures used by or associated with such instructions.
  • Nonlimiting communication device-readable medium examples may include solid- state memories and optical and magnetic media.
  • communication device-readable media may include non-volatile memory, such as semiconductor memory devices (e.g., Electrically Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM)) and flash memory devices; magnetic disks, such as internal hard disks and removable disks; magneto-optical disks; Random Access Memory (RAM); and CD-ROM and DVD-ROM disks.
  • EPROM Electrically Programmable Read-Only Memory
  • EEPROM Electrically Erasable Programmable Read-Only Memory
  • flash memory devices e.g., Electrically Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM)
  • flash memory devices e.g., Electrically Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM)
  • flash memory devices e.g., Electrically Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM
  • Instructions 1124 may further be transmitted or received over a communications network 1126 using a transmission medium via the network interface device 1120 utilizing any one of several transfer protocols.
  • the network interface device 1120 may include one or more physical jacks (e.g., Ethernet, coaxial, or phonejacks) or one or more antennas to connect to the communications network 1126.
  • the network interface device 1120 may include a plurality of antennas to wirelessly communicate using at least one of the single-input-multiple-output (SIMO), MIMO, or multiple-input-single-output (MISO) techniques.
  • SIMO single-input-multiple-output
  • MIMO single-input-multiple-output
  • MISO multiple-input-single-output
  • the network interface device 1120 may wirelessly communicate using multiple-user MIMO techniques.
  • transmission medium shall be taken to include any intangible medium that is capable of storing, encoding, or carrying instructions for execution by the communication device 1100 and includes digital or analog communications signals or another intangible medium to facilitate communication of such software.
  • a transmission medium in the context of this disclosure is a device-readable medium.
  • machine-readable medium means the same thing and may be used interchangeably in this disclosure.
  • the terms are defined to include both machine-storage media and transmission media.
  • the terms include both storage devices/media and carrier waves/modulated data signals.
  • Example 1 is an apparatus for a user equipment (UE) configured for operation in a New Radio (NR) network, the apparatus comprising: processing circuitry, wherein to configure the UE for sounding reference signal (SRS) transmission in the NR network, the processing circuitry is to: encode an SRS for transmission to a base station via SRS antenna port (AP) switching; encode capability reporting signaling for transmission to the base station, the capability reporting signaling including an indication of SRS insertion loss (IL) associated with the SRS AP switching; and decode downlink (DL) data received in a DL transmission from the base station, the DL transmission associated with DL transmission power based on DL channel state information, and the DL channel state information based on the SRS and the SRS IL; and memory coupled to the processing circuitry and configured to store the capability reporting signaling.
  • SRS sounding reference signal
  • Example 2 the subject matter of Example 1 includes subject matter where the processing circuitry is to encode uplink (UL) data for an UL transmission to the base station, the UL transmission performed using UL transmission power based on the SRS IL.
  • UL uplink
  • Example 3 the subject matter of Example 2 includes subject matter where the capability reporting signalling is associated with a per-band granularity, a per-feature-set (per FS) granularity, or a per-Feature-Set-Per- Carrier (per FSPC) granularity.
  • Example 4 the subject matter of Examples 2-3 includes subject matter where the capability reporting signaling provides SRS IL capabilities associated with the SRS IL for different SRS transmit (TX) switching patterns supported by the UE, and wherein the different SRS TX switching patterns are indicated by existing UE capability signaling supportedSRS-TxPortSwitch and supportedSRS-TxPortSwitchBeyond4Rx.
  • TX SRS transmit
  • Example 5 the subject matter of Examples 1-4 includes subject matter where the capability reporting signaling provides a single SRS IL value to characterize the SRS IL for a specific switching pattern and characterize signal loss corresponding to a transmission not involving a main AP branch.
  • Example 6 the subject matter of Examples 1-5 includes subject matter where the capability reporting signaling provides different SRS IL values for each or a subset of SRS resources other than a first SRS resource within each SRS resource set used for antenna switching and corresponding to a SRS TX switching pattern.
  • Example 7 the subject matter of Examples 2-6 includes subject matter where the indication in the capability reporting signalling includes a maximum SRS IL value in units of dB.
  • Example 8 the subject matter of Examples 2-7 includes subject matter where the indication of the SRS IL in the capability reporting signalling includes different SRS IL capabilities for different supported UE power classes.
  • Example 9 the subject matter of Examples 1-8 includes subject matter where the processing circuitry is to configure a maximum output power for the transmission of the SRS based on the SRS IL.
  • Example 10 the subject matter of Examples 1-9 includes transceiver circuitry coupled to the processing circuitry, and one or more antennas coupled to the transceiver circuitry.
  • Example 11 is a computer-readable storage medium that stores instructions for execution by one or more processors of a user equipment (UE), the instructions to configure the UE for sounding reference signal (SRS) transmission in a New Radio (NR) network, and to cause the UE to perform operations comprising: encoding an SRS for transmission to a base station via SRS antenna port (AP) switching; encoding capability reporting signaling for transmission to the base station, the capability reporting signaling including an indication of SRS insertion loss (IL) associated with the SRS AP switching; and decoding downlink (DL) data received in a DL transmission from the base station, the DL transmission associated with DL transmission power based on DL channel state information, and the DL channel state information based on the SRS and the SRS IL.
  • SRS sounding reference signal
  • NR New Radio
  • Example 12 the subject matter of Example 11 includes subject matter where the operations further comprise: encoding uplink (UL) data for an UL transmission to the base station, the UL transmission performed using UL transmission power based on the SRS IL.
  • UL uplink
  • Example 13 the subject matter of Example 12 includes subject matter where the capability reporting signalling is associated with a per-band granularity, a per-feature-set (per FS) granularity, or a per-Feature-Set-Per- Carrier (per FSPC) granularity.
  • Example 14 the subject matter of Examples 12-13 includes subject matter where the capability reporting signaling provides SRS IL capabilities associated with the SRS IL for different SRS transmit (TX) switching patterns supported by the UE, and wherein the different SRS TX switching patterns are indicated by existing UE capability signaling supportedSRS-TxPortSwitch and supportedSRS-TxPortSwitchBeyond4Rx.
  • TX SRS transmit
  • Example 15 the subject matter of Examples 11-14 includes subject matter where the capability reporting signaling provides a single SRS IL value to characterize the SRS IL for a specific switching pattern and characterize signal loss corresponding to a transmission not involving a main AP branch.
  • Example 16 is a user equipment (UE) configured for sounding reference signal (SRS) transmission in a New Radio (5GNR) network, the UE comprising: front-end circuitry coupled to one or more antennas; processing circuitry coupled to the front-end circuitry, the processing circuitry is to: encode an SRS for transmission to a base station via SRS antenna port (AP) switching; encode capability reporting signaling for transmission to the base station, the capability reporting signaling including an indication of SRS insertion loss (IL) associated with the SRS AP switching; and decode downlink (DL) data received in a DL transmission from the base station, the DL transmission associated with DL transmission power based on DL channel state information, and the DL channel state information based on the SRS and the SRS IL.
  • UE user equipment
  • SRS sounding reference signal
  • 5GNR New Radio
  • Example 17 the subject matter of Example 16 includes subject matter where the processing circuitry is to: encode uplink (UL) data for an UL transmission to the base station, the UL transmission performed using UL transmission power based on the SRS IL.
  • the processing circuitry is to: encode uplink (UL) data for an UL transmission to the base station, the UL transmission performed using UL transmission power based on the SRS IL.
  • Example 18 the subject matter of Example 17 includes subject matter where the capability reporting signalling is associated with a per-band granularity, a per-feature-set (per FS) granularity, or a per-Feature-Set-Per- Carrier (per FSPC) granularity.
  • Example 19 the subject matter of Examples 17-18 includes subject matter where the capability reporting signaling provides SRS IL capabilities associated with the SRS IL for different SRS transmit (TX) switching patterns supported by the UE, and wherein the different SRS TX switching patterns are indicated by existing UE capability signaling supportedSRS-TxPortSwitch and supportedSRS-TxPortSwitchBeyond4Rx.
  • TX SRS transmit
  • Example 20 the subject matter of Examples 16-19 includes subject matter where the capability reporting signaling provides a single SRS IL value to characterize the SRS IL for a specific switching pattern and characterize signal loss corresponding to a transmission not involving a main AP branch.
  • Example 21 is at least one machine-readable medium including instructions that, when executed by processing circuitry, cause the processing circuitry to perform operations to implement any of Examples 1-20.
  • Example 22 is an apparatus comprising means to implement any of Examples 1-20.
  • Example 23 is a system to implement any of Examples 1-20.
  • Example 24 is a method to implement any of Examples 1-20.

Landscapes

  • Mobile Radio Communication Systems (AREA)

Abstract

Un UE est configuré pour la transmission d'un signal de référence de sondage (SRS) dans un réseau NR. Le circuit de traitement de l'UE est destiné à coder un SRS destiné à être transmis à une station de base par l'intermédiaire d'une commutation de port d'antenne (AP) de transmission de SRS. Le circuit de traitement est en outre destiné à coder une signalisation de rapport de capacité pour une transmission à la station de base. La signalisation de rapport de capacité comprend une indication de perte d'insertion (IL) de SRS associée à la commutation d'AP de transmission de SRS. Le circuit de traitement est en outre destiné à décoder des données de liaison descendante (DE) reçues dans une transmission DE provenant de la station de base, la transmission DE étant associée à une puissance de transmission DE basée sur des informations d'état de canal DE, les informations d'état de canal DE étant basées sur le SRS et l'IL de SRS.
PCT/US2025/028454 2024-05-10 2025-05-08 Transmission d'un signal de référence de sondage avec compensation de perte d'insertion Pending WO2025235790A1 (fr)

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US202463645493P 2024-05-10 2024-05-10
US63/645,493 2024-05-10

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