WO2024072295A1 - Équipement utilisateur, nœuds de réseau radio et procédés de gestion de communications - Google Patents

Équipement utilisateur, nœuds de réseau radio et procédés de gestion de communications Download PDF

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Publication number
WO2024072295A1
WO2024072295A1 PCT/SE2023/050949 SE2023050949W WO2024072295A1 WO 2024072295 A1 WO2024072295 A1 WO 2024072295A1 SE 2023050949 W SE2023050949 W SE 2023050949W WO 2024072295 A1 WO2024072295 A1 WO 2024072295A1
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WIPO (PCT)
Prior art keywords
radio network
network node
reference signal
measurement relaxation
cell
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PCT/SE2023/050949
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English (en)
Inventor
Nianshan SHI
Ali Nader
Sina MALEKI
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Telefonaktiebolaget Lm Ericsson (Publ)
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Publication of WO2024072295A1 publication Critical patent/WO2024072295A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H04W36/0094—Definition of hand-off measurement parameters

Definitions

  • Embodiments herein relate to a user equipment (UE), a first radio network node, a second radio network node, and methods performed therein regarding wireless communication. Furthermore, a computer program product and a computer-readable storage medium are also provided herein. In particular, embodiments herein relate to handling communication, such as handling operation of a user equipment.
  • UEs also known as wireless communication devices, mobile stations, stations (STA) and/or wireless devices, communicate via a Radio Access Network (RAN) with one or more core networks (CN).
  • the RAN covers a geographical area which is divided into service areas or cell areas, with each service area or cell area being served by radio network node such as an access node, e.g., a Wi-Fi access point or a radio base station (RBS), which in some networks may also be called, for example, a NodeB, a gNodeB, or an eNodeB.
  • the service area or cell area is a geographical area where radio coverage is provided by the radio network node.
  • the radio network node operates on radio frequencies to communicate over an air interface with the UEs within range of the radio network node.
  • the radio network node communicates over a downlink (DL) to the UE, and the UE communicates over an uplink (UL) to the radio network node.
  • DL downlink
  • UL uplink
  • a Universal Mobile Telecommunications System is a third generation telecommunication network, which evolved from the second generation (2G) Global System for Mobile Communications (GSM).
  • the UMTS terrestrial radio access network (UTRAN) is essentially a RAN using wideband code division multiple access (WCDMA) and/or High-Speed Packet Access (HSPA) for communication with user equipment.
  • WCDMA wideband code division multiple access
  • HSPA High-Speed Packet Access
  • radio network nodes may be connected, e.g., by landlines or microwave, to a controller node, such as a radio network controller (RNC) or a base station controller (BSC), which supervises and coordinates various activities of the plural radio network nodes connected thereto.
  • RNC radio network controller
  • BSC base station controller
  • the RNCs are typically connected to one or more core networks.
  • the Evolved Packet System comprises the Evolved Universal Terrestrial Radio Access Network (E-UTRAN), also known as the Long-Term Evolution (LTE) radio access network, and the Evolved Packet Core (EPC), also known as System Architecture Evolution (SAE) core network.
  • E-UTRAN also known as the Long-Term Evolution (LTE) radio access network
  • EPC also known as System Architecture Evolution (SAE) core network.
  • E-UTRAN/LTE is a 3GPP radio access technology wherein the radio network nodes are directly connected to the EPC core network.
  • the Radio Access Network (RAN) of an EPS has an essentially “flat” architecture comprising radio network nodes connected directly to one or more core networks.
  • Transmit-side beamforming means that the transmitter can amplify the transmitted signals in a selected direction or directions, while suppressing the transmitted signals in other directions.
  • a receiver can amplify signals from a selected direction or directions, while suppressing unwanted signals from other directions.
  • Next generation systems are expected to support a wide range of use cases with varying requirements ranging from fully mobile devices to stationary Internet of Things (loT) or fixed wireless broadband devices.
  • the traffic pattern associated with many use cases may be expected to consist of short or long bursts of data traffic with varying length of waiting period in between, here called inactive state.
  • both license assisted access and standalone unlicensed operation are to be supported.
  • the procedure of Physical Random-Access Channel (PRACH) transmission and/or Scheduling Request (SR) transmission in unlicensed spectrum may be investigated in 3GPP.
  • PRACH Physical Random-Access Channel
  • SR Scheduling Request
  • NG-RAN NR 5G RAN
  • FIG. 1a shows thus, an overall architecture of NG-RAN (referred to as Figure 6.1-1 in 3GPP TS 38.401 v17.0.0).
  • the NG-RAN consists of a set of gNBs connected to the 5G Core (5GC) through the NG interface.
  • 5GC 5G Core
  • NG-RAN could also consist of a set of ng-eNBs
  • an ng-eNB may consist of an ng-eNB-Central Unit (CU) and one or more ng- eNB-Distributed Units (DU).
  • An ng-eNB-CU and an ng-eNB-DU is connected via the W1 interface.
  • the general principle described in this section also applies to an ng-eNB and the W1 interface, unless explicitly stated otherwise.
  • a gNB can support Frequency Division Duplex (FDD) mode, Time Division Duplex (TDD) mode or dual mode operation.
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • gNBs can be interconnected through the Xn interface.
  • a gNB may consist of a gNB-CU and one or more gNB-DU(s).
  • a gNB-CU and a gNB-DU are connected via the F1 interface.
  • One gNB-DU is connected to only one gNB-CU.
  • NG, Xn and F1 are logical interfaces.
  • the NG and Xn-C interfaces for a gNB consisting of a gNB-CU and gNB-DUs terminate in the gNB-CU.
  • E-UTRA NR Dual Connectivity (EN-DC) the S1-U and X2-C interfaces for a gNB consisting of a gNB-CU and gNB-DUs terminate in the gNB-CU.
  • the gNB-CU and the connected gNB-DUs are only visible to other gNBs and the 5GC as gNB.
  • FIG. 1b The overall architecture for separation of gNB-CU-Control Plane (CP) and gNB- CU-User Plane (UP) is depicted in FIG. 1b.
  • CP gNB-CU-Control Plane
  • UP gNB- CU-User Plane
  • FIG. 1b shows, thus, an overall architecture for separation of gNB-CU-CP and gNB-CU-UP (referred to as Figure 6.1.2-1 in 3GPP TS 38.401 v17.0.0).
  • Energy consumption is a major challenge of the 5G system today. Most of the energy consumption comes from Radio Units (RUs) of the RANs. The network energy consumption is said to be less for NR compared to LTE because of the lean NR design. In the current implementation, however, NR will most likely consume more energy compared to LTE, e.g., due to denser network deployment, larger number of antennas, larger bandwidths, more carriers, and other new performance-enhancing features that cause additional energy consumption.
  • RUs Radio Units
  • RAN is typically deployed in a layered fashion.
  • the RAN capabilities are enhanced by adding carriers or spectrum to macro sites and deploying micro and indoor sites to complement the macro layers to boost (indoor) coverage, absorb (hotspot) traffic, and improve user experience, especially during peak traffic hours.
  • These RAN deployments will, however, lead to excess network capacity at times of low traffic (demand), which will thus result in unnecessarily high energy consumption if not counteracted with suitable energy saving techniques.
  • Cell deactivation is a known and conventional energy saving technique in the spatial domain that takes advantage of the opportunity to offload UEs and thus the associated traffic in a layered RAN structure with overlapping coverage areas to reduce the RAN energy consumption.
  • cell deactivation comes at the price of long cell reactivation delays in case the additional network capacity is needed to provide a certain user experience or opportune for other reasons, which significantly limits the opportunities or amount of time for employing this energy saving technique.
  • More granular energy saving techniques in time, frequency, spatial, and power domains are foreseen.
  • An example for UE energy saving techniques in the time domain is Discontinuous Reception (DRX).
  • DRX Discontinuous Reception
  • NR comprises techniques supporting DRX for the UE to reduce the UE energy consumption.
  • DRX can be used in both Radio Resource Control (RRC) Connected mode denoted as C-DRX and RRC Idle/lnactive mode denoted as DRX. It resembles an agreement between network and UE that, regardless of downlink traffic, the network will only attempt to contact the UE during on-times of the configured DRX cycle and/or pattern. Thus, the UE must monitor and decode the downlink channels only as configured and can sleep, i.e. , be in a low power/energy state, otherwise, i.e. , during off-times. In case of uplink traffic, however, the UE may initiate transmission regardless of the DRX configuration. Simply put, the gNB must be prepared to receive uplink traffic at any time.
  • RRC Radio Resource Control
  • DTRX Discontinuous Transmission and Reception
  • the available network capacity can dynamically be adjusted to the required network capacity, always as per current traffic demand, but without having to offload UEs to neighboring cells with overlapping coverage areas, i.e., UEs can stay connected to a cell employing DTRX, and with considerably smaller transition times and lower signaling overhead between NG-RAN nodes on the Xn interface.
  • methods may be developed for various network nodes, e.g., RAN nodes such as gNB, gNB-CU, or gNB-DU, or CN nodes, or functions hosted therein, such as Access and Mobility Management Function (AMF), to coordinate and exchange information associated to at least a DTRX pattern employed, or to be employed, at one or more network nodes.
  • AMF Access and Mobility Management Function
  • An NR UE performs Radio Link Monitoring (RLM) and Beam Failure Detection (BFD) evaluations on a periodical basis while in RRC-Connected state.
  • RLM monitoring is performed on a set of configured resources such as Radio Link Monitoring-Reference Signals (RLM-RS).
  • the configured resources are either Synchronization Signal Block (SSB) or Channel State Information-Reference Signal (CSI-RS).
  • SSB Radio Link Monitoring-Reference Signal
  • CSI-RS Channel State Information-Reference Signal
  • Such evaluation comprises the UE estimating the downlink radio link quality, such as Signal to Interference plus Noise Ratio (SINR), and comparing to predefined thresholds Qout and Qin which correspond to a hypothetical Physical Downlink Control Channel (PDCCH) Block Error Rate (BLER) of 10% and 2% respectively.
  • PDCCH Physical Downlink Control Channel
  • BLER Block Error Rate
  • BFD is a procedure for recovering beam connection when the DL beam monitored by the UE becomes weak. Similar to RLM, the UE estimates the downlink quality of the configured BFD-RS, such as SSB or CSI-RS, periodically and compares it to a threshold Q ou t,LR which corresponds to a hypothetical PDCCH BLER of 10%.
  • the configured BFD-RS such as SSB or CSI-RS
  • RLM and BFD relaxation methods are introduced for the sake of UE power saving.
  • NW Network
  • UEs characterized to be operating in good serving cell quality and/or low mobility conditions may relax the periodicity of RLM/BFD assessment, being examples of UE measurement relaxations. More specifically, the UE determines that it is in a low mobility condition by keeping track of the measured Synchronization Signal (SS) - Reference Signal Received Power (RSRP) variations in the cell in comparison to a NW configured threshold during a NW configured time window. If the variations are less than the threshold during the time window, the UE is assumed to be in a low mobility state. The UE determines that the cell quality is good if the DL link quality on a configured RLM-RS and BFD-RS resources are better than Qin plus RLM/BFD-specific offsets.
  • SS Synchronization Signal
  • RSRP Reference Signal Received Power
  • the two relaxation features may be configured and enabled and/or disabled independently per cell group, such as Master Cell Group (MCG) and/or Secondary Cell Group (SCG). While the RLM relaxation is applicable to the primary cells of MCG and SCG, the BFD is applicable to all serving cells of MCG/SCG.
  • MCG Master Cell Group
  • SCG Secondary Cell Group
  • the UE can also be configured to report its relaxation status to the NW via UE Assistance.
  • the UE when the UE enters and/or exits relaxed state for RLM and/or BFD evaluation, it shall inform/indicate its relaxation state to the relevant node, such as primary cell of MCG or SCG, of the NW.
  • Further enhancements to these relaxations may be possible in which the UE and the NW become fully synchronized with respect to which instances of the reference signals are to be used for measurement. The intention of such enhancements was to allow the NW to safely turn off transmission of instances not used by the UE and thereby save energy.
  • 3GPP also supports other types of measurement related relaxations for the UE to enhance the UE power saving both in RRC idle/inactive and RRC connected modes.
  • RRC idle/inactive see 3GPP 38.304 17.1.0, and connected, 3GPP 38.331 v.17.1.0, modes, when certain criteria related to serving cell quality and/or UE mobility are met, the UE may choose to not perform measurements on intra and/or inter-frequency and inter- RAT neighbors. In RRC connected mode, the UE may be configured to report its relaxation status.
  • the NW may configure a threshold (s-Measure in 3GPP 38.331), and if the UE serving cell RSRP measurements are above this threshold, the UE is not required to perform measurements on neighboring cells. No reporting is done to the NW when the UE omits neighbor measurements.
  • the neighboring gNBs may be providing periodic reference signals, e.g., SSBs, unnecessarily often and at unnecessary high transmission power just for the sake of potential UEs in neighboring cells in need of measurements.
  • periodic reference signals e.g., SSBs
  • the serving gNB can acquire knowledge about its own cell’s UEs’ relaxation status, it may not be able to reduce provision rate and/or power of its reference signals as there might be UEs at the edge of a neighboring cell in need of such reference signals.
  • An object herein is to provide an energy efficient handling of operations in a wireless communications network.
  • the object is achieved by providing a method performed by a first radio network node for handling communication in a wireless communications network.
  • the first radio network node transmits to a second radio network node and/or a UE, an indication of UE measurement relaxation status relating to one or more reference signal provision parameters in a cell of at least one of the radio network nodes.
  • the first radio network node may exchange one or more indications with the second radio network node, wherein the one or more indications relate to one or more reference signal provision parameters in a cell of respective radio network node.
  • the first radio network node may further obtain a reference signal transmission pattern for a cell served by the first radio network node based on at least one indication out of the one or more indications from the second radio network node.
  • the object is achieved by providing a method performed by a second radio network node for handling communications in a wireless communications network.
  • the second radio network node receives an indication from a first radio network node, wherein the indication indicates a UE measurement relaxation status relating to one or more reference signal provision parameters in a cell of the first radio network node.
  • the second radio network node may, for example, then design a transmission pattern for reference signals in the cell of the second radio network node based on the received indication.
  • the object is achieved by providing a method performed by a UE for handling communications in a wireless communications network.
  • the UE receives, from a first radio network node, a configuration indicating a UE measurement relaxation status relating to one or more reference signal provision parameters in a cell of the first radio network node, and/or a second radio network node.
  • a computer program product comprising instructions, which, when executed on at least one processor, cause the at least one processor to carry out the methods herein, as performed by the UE and the radio network nodes, respectively.
  • a computer-readable storage medium having stored thereon a computer program product comprising instructions which, when executed on at least one processor, cause the at least one processor to carry out the methods herein, as performed by the UE and the radio network nodes, respectively.
  • the object is further achieved by providing a UE and radio network nodes configured to perform the methods herein, respectively.
  • the first radio network node for handling communication in a wireless communications network.
  • the first radio network node is configured to transmit to a second radio network node and/or a UE, an indication of UE measurement relaxation status relating to one or more reference signal provision parameters in a cell of at least one of the radio network nodes.
  • the second radio network node is configured to receive an indication from a first radio network node, wherein the indication indicates a UE measurement relaxation status relating to one or more reference signal provision parameters in a cell of the first radio network node.
  • a UE for handling communications in a wireless communications network.
  • the UE is configured to receive, from a first radio network node, a configuration indicating a UE measurement relaxation status relating to one or more reference signal provision parameters in a cell of the first radio network node, and/or a second radio network node.
  • Embodiments herein provide a solution wherein radio network nodes are informed by the UE measurement relaxation status and may then take measures to provide reference signals in an efficient manner.
  • FIG. 1a shows an overall architecture of NG-RAN according to prior art
  • FIG. 1b shows an overall architecture for separation of gNB-CU-CP and gNB-CU-UP according to prior art
  • FIG. 2a is a schematic overview depicting a wireless communications network in accordance with embodiments herein;
  • FIG. 2b is a combined signaling scheme and flowchart, showing communications between a UE and first and second network nodes, in accordance with embodiments herein;
  • FIG. 3a is a schematic flowchart illustrating a method performed by a first radio network node, in accordance with embodiments herein;
  • FIG. 3b is a schematic flowchart illustrating a method performed by a second radio network node, in accordance with embodiments herein;
  • FIG. 3c is a schematic flowchart illustrating a method performed by UE, in accordance with embodiments herein;
  • FIG. 4 is a combined signaling scheme and flowchart, showing communications between a UE and first and second network nodes, in accordance with some embodiments;
  • FIG. 5 is a combined signaling scheme and flowchart, showing communications between a UE and first and second network nodes, in accordance with some embodiments
  • FIG. 6 is a combined signaling scheme and flowchart, showing communications between a UE and first and second network nodes, in accordance with some embodiments
  • FIG. 7 is a schematic overview depicting a first radio network node in accordance with some embodiments.
  • FIG. 8 is a schematic overview depicting a second radio network node in accordance with some embodiments.
  • FIG. 9 is a schematic overview depicting a UE in accordance with some embodiments.
  • FIG. 10 illustrates a telecommunication network connected via an intermediate network to a host computer, in accordance with some embodiments
  • FIG. 11 illustrates a host computer communicating via a base station with a user equipment over a partially wireless connection, in accordance with some embodiments
  • FIG. 12 is a flowchart illustrating methods implemented in a communication system including a host computer, a base station, and a user equipment, in accordance with some embodiments;
  • FIG. 13 is another flowchart illustrating methods implemented in a communication system including a host computer, a base station, and a user equipment, in accordance with some embodiments;
  • FIG. 14 is another flowchart illustrating methods implemented in a communication system including a host computer, a base station, and a user equipment, in accordance with some embodiments.
  • FIG. 15 is another flowchart illustrating methods implemented in a communication system including a host computer, a base station, and a user equipment, in accordance with some embodiments.
  • FIG. 2a is a schematic overview depicting a wireless communications network 10.
  • the wireless communications network 10 comprises one or more RANs and one or more CNs.
  • the wireless communications network 10 may use one or a number of different technologies.
  • Embodiments herein relate to recent technology trends that are of particular interest in a New Radio (NR) context, however, embodiments are also applicable in further developments of existing wireless communications systems such as e.g. LTE or Wideband Code Division Multiple Access (WCDMA).
  • NR New Radio
  • WCDMA Wideband Code Division Multiple Access
  • a user equipment (UE) 102 such as a mobile station, a wireless device, a non-access point (non-AP) STA, a STA, and/or a wireless terminal, is communicating via e.g. one or more Access Networks (AN), e.g. RAN, to one or more CN.
  • AN Access Networks
  • UE is a non-limiting term which means any terminal, wireless communications terminal or device, user equipment, NB-loT device, Machine Type Communication (MTC) device, Device to Device (D2D) terminal, or node, e.g. smart phone, laptop, mobile phone, sensor, relay, mobile tablets or even a small base station capable of communicating using radio communication with a radio network node within an area served by the radio network node.
  • MTC Machine Type Communication
  • D2D Device to Device
  • the wireless communications network 10 comprises a first radio network node 104, e.g., an access node, an access controller, a base station, e.g. a radio base station such as a gNodeB (gNB), an evolved Node B (eNB, eNode B), a NodeB, a NG-RAN node, a gNB-CU, a base transceiver station, a radio remote unit, an Access Point Base Station, a base station router, a Wireless Local Area Network (WLAN) access point or an Access Point Station (AP STA), MME, AMF, a stand-alone access point, Central unit (CU), or any other network unit or node capable of communicating with a wireless device within a service area 14 served by the radio network node depending e.g., on a radio access technology and terminology used.
  • a radio base station e.g. a radio base station such as a gNodeB (gNB), an evolved Node B (eNB, eNo
  • the service area 14 may also be referred to as a beam or a beam group of a first Radio Access Technology (RAT), such as 5G, LTE, WiFi, or similar.
  • the first radio network node 104 may be referred to as a serving node such as a serving NG-RAN node.
  • the wireless communications network 10 also comprises a second radio network node 106, e.g., an access node, an access controller, a base station, e.g. a radio base station such as a gNodeB (gNB), an evolved Node B (eNB, eNode B), a NodeB, a NG-RAN node, a gNB-CU, a gNB-DU, a base transceiver station, a radio remote unit, an Access Point Base Station, a base station router, a Wireless Local Area Network (WLAN) access point or an Access Point Station (AP STA), a stand-alone access point, a distributed unit (DU), or any other network unit or node capable of communicating with a wireless device within a service area 16 served by the radio network node depending e.g., on a radio access technology and terminology used.
  • a radio base station e.g. a radio base station such as a gNodeB (gNB), an evolved Node B (e
  • the service area 16 may also be referred to as a beam or a beam group of a first or second RAT, such as 5G, LTE, Wi-Fi, or similar.
  • the second radio network node 106 may be referred to as a neighboring node serving one or more neighboring cells.
  • the serving NG-RAN node i.e. , the first radio network node 104, distributes and may also receive, i.e., exchanges UE measurement relaxation configuration/information among the neighboring nodes/cells. Based on this exchanged information, the serving and the neighboring cells may use the information to design their reference signal transmission patterns; e.g., switch between normal reference signal provision and relaxed reference signal provision. o Where relaxed reference signal provision rate could be provision at reduced rate, power, etc. compared to normal rate.
  • Embodiments herein are provided covering methods performed in the network in which the first and/or the second radio network node may:
  • the measurement relaxation configuration may optionally include configuration related to how and which RSs are to be measured by the UEs of the cell.
  • the UE measurement relaxation configuration may additionally be provided together with the serving and neighboring cells DTRX pattern.
  • the RRC Idle/inactive UEs may be configured via system information block (SIB) message or RRC release or another type of dedicated signaling.
  • SIB system information block
  • the RRC connected UEs may be configured via dedicated signaling, e.g., RRC signaling, or SIB.
  • Embodiments herein are provided covering methods performed by the UE 102.
  • One or a set of UE measurement configuration relaxation related to serving and neighbor cells may be configured for the UE and modified.
  • the UE 102 additionally may receive configuration of how and which RSs to measure during measurement relaxation.
  • the UE 102 may additionally receive the gNB DTRX pattern of serving and neighbor cells.
  • the UE 102 may inform a radio network node of the fact that it has relaxed one or more of configured measurements.
  • the UE 102 may then perform the measurements in the relaxed mode according to the provided configuration.
  • the UE 102 may then, if in need of neighbor cell measurements and if the neighbor cells are in relaxed mode, perform the measurements on neighbor cell reference signals according to the availability of such signals according to configuration from serving cell. o The UE 102 may receive the corresponding configuration from a dedicated signaling method, e.g., RRC release if in RRCJdle/inactive state, or RRC signaling if in connected state, or a SIB message.
  • a dedicated signaling method e.g., RRC release if in RRCJdle/inactive state, or RRC signaling if in connected state, or a SIB message.
  • the measurement relaxation configurations may need to be communicated between two gNB-CUs. Based on said information the gNB-CUs may inform their gNB-DUs to adapt the reference signal provision pattern, rate, power, etc..
  • FIG. 2b is a combined flowchart and signalling scheme depicting some embodiments herein.
  • the first radio network node 104 exchanges indications of UE measurement relaxation status of the UE 102 with the second radio network node 106.
  • the first radio network node 104 transmits to the second radio network node 106 an indication of UE measurement relaxation status relating to one or more reference signal provision parameters in a cell of at least one of the radio network nodes.
  • the first radio network node 104 may obtain, such as receive from the UE and/or the second radio network node, indications of a UE measurement relaxation of the UE and/or the second radio network node.
  • the first radio network node 104 may configure the UE 102 with a UE measurement relaxation configuration, which may be based on the received indication from the second radio network node 106.
  • the first radio network node 104 may negotiate with the second radio network node 106 which UE measurement relaxation configuration to use.
  • the UE 102 may perform measurements based on the UE measurement relaxation configuration.
  • the UE 102 may further perform feedback regarding the measurements.
  • the first radio network node 104 may then update the UE measurement relaxation status of the UE 102 separately or negotiating with the second radio network node 106.
  • the first radio network node 104 may then transmit to the second radio network node 106, and/or the UE 102, an updated indication of UE measurement relaxation status relating to one or more reference signal provision parameters in a cell of at least one of the radio network nodes.
  • FIG. 3a illustrates an example of a method performed by the first radio network node 104 for handling communication or measurements in the wireless communications network.
  • Optional actions are marked with dashed boxes and/or actions may be taken in any suitable order.
  • the first radio network node 104 may obtain, such as receive, information relating the UE measurement relaxation status of the UE 102 and/or the second radio network node 106.
  • the first radio network node 104 may further obtain or determine a UE measurement relaxation status for the UE 102 for a cell of the first and/or the second radio network node.
  • the first radio network node 104 may obtain a reference signal transmission pattern for a cell served by the first radio network node based on at least one indication, such as the second radio network nodes information, out of the one or more indications.
  • the first radio network node 104 may design a reference signal transmission pattern for the cell served by the first radio network node based on the at least one indication.
  • the first radio network node 104 transmits to the second radio network node 106, and/or the UE 102, an indication of UE measurement relaxation status relating to one or more reference signal provision parameters in a cell of at least one of the radio network nodes.
  • the one or more reference signal provision parameters may comprise reference signal provision pattern, transmission rate and/or transmission power.
  • the UE measurement relaxation status may comprise a relaxation of measurements, a periodicity of RLM or BFD assessment, and/or an indication not to perform measurements on intra/inter-frequency and inter-RAT neighbors.
  • the first radio network node 104 may receive feedback from the UE 102 and/or the second radio network node 106 relating to UE measurement relaxation status and/or performance.
  • the first radio network node may determine an updated UE measurement relaxation status taking the feedback into account.
  • the first radio network node 104 may transmit an updated indication to the second radio network node 106, and/or the UE 102, indicating UE measurement relaxation status relating to one or more reference signal provision parameters in a cell of at least one of the radio network nodes.
  • FIG. 3b illustrates an example of a method performed by the second radio network node 106 for handling communication in the wireless communications network.
  • Optional actions are marked with dashed boxes and/or actions may be taken in any suitable order.
  • the second radio network node 106 receives from the first radio network node 104, the indication of the UE measurement relaxation status relating to one or more reference signal provision parameters in the cell of the first radio network node 104.
  • the one or more reference signal provision parameters may comprise a reference signal provision pattern, transmission rate and/or transmission power.
  • the UE measurement relaxation status may comprise a relaxation of measurements, a periodicity of RLM or BFD assessment, and/or an indication not to perform measurements on intra/inter-frequency and inter-RAT neighbors.
  • the second radio network node 106 may determine a transmission pattern for reference signals or a reference signal pattern for a cell of the second radio network node 106 based on the indication. For example, the second radio network node 106 may design a transmission pattern for reference signals in the cell of the second radio network node based on the received indication. Thus, the second radio network node 106 may obtain a reference signal transmission pattern for a cell served by the first radio network node 104 based on at least one indication out of the one or more indications to be used to determine a reference signal transmission pattern for a cell served by the second radio network node 106.
  • the second radio network node 106 may obtain a reference signal transmission pattern for the cell served by the first radio network node based on the indication to be used to determine a reference signal transmission pattern for a cell served by the second radio network node 106.
  • the second radio network node 106 may, for example, follow the reference signal transmission pattern of the first radio network node 104.
  • the second radio network node 106 may transmit to the first radio network node 104 an indication of the UE measurement relaxation status relating to one or more reference signal provision parameters in a cell of the second radio network node 106.
  • the second radio network node 106 may perform one or more operations using the determined transmission pattern or reference signal pattern.
  • the second radio network node 106 may transmit feedback to the first radio network node 104 relating to UE measurement relaxation status decision and/or performance.
  • the second radio network node 106 may receive the updated indication from the first radio network node 104, indicating updated UE measurement relaxation status relating to one or more reference signal provision parameters in a cell of the first radio network node.
  • FIG. 3c illustrates an example of a method performed by the UE 102 for handling communication or measurements in the wireless communications network.
  • Optional actions are marked with dashed boxes and/or actions may be taken in any suitable order.
  • the UE 102 may provide, such as transmit to the first radio network node 104 information relating the UE measurement relaxation status of the UE 102.
  • the UE 102 receives configuration data from the first radio network node 104 to configure the UE 102 with a UE measurement relaxation configuration relating to one or more reference signal provision parameters for one or more cells of the first and/or a second radio network node 106.
  • the one or more reference signal provision parameters may comprise a reference signal provision pattern, transmission rate and/or transmission power.
  • the UE 102 may for example receive configuration data from the first radio network node 104 to configure the UE 102 with a UE measurement relaxation configuration for the one or more cells of the first and/or the second radio network node 106.
  • the UE measurement relaxation configuration may comprise a relaxation of measurements, a periodicity of RLM or BFD assessment, and/or an indication not to perform measurements on intra/inter-frequency and inter-RAT neighbors.
  • the UE 102 may perform one or more measurements based on the UE measurement relaxation configuration.
  • the UE 102 may further transmit feedback regarding the one or more measurements to the first radio network node 104 and/or the second radio network node 106. The UE 102 may thus perform feedback regarding the measurements.
  • the UE 102 may then receive from the first radio network node 104, the updated indication of UE measurement relaxation status relating to one or more reference signal provision parameters in a cell of at least one of the radio network nodes.
  • the NG-RAN node such as the first radio network node 104, may collect the UE measurement relaxation information for the UEs that it serves, action 41. It analyzes the information, determines, action 42, and distributes, action 43, the set of the information for the neighboring cell in the neighboring nodes, such as the second radio network node 106.
  • Such information may include the coverage and/or mobility status of one or more UEs in the serving NG-RAN node.
  • the information may also include the position of said UEs, e.g., which SSBs are associated with the reported UEs.
  • potential reference signal provision relaxation e.g., reference signal provision pattern/rate/transmission (Tx) Power
  • Tx reference signal provision pattern/rate/transmission
  • the neighboring NG-RAN may decide and execute the NG-RAN relaxation, action 44.
  • action 45 the neighboring NG-RAN informs the serving NG-RAN mode about potential relaxation decision, after action 44, including for example reference signal provision relaxation rate/Tx Power.
  • the Serving NG-RAN mode may then provide, e.g., RRC signaling or broadcast, action 46, neighbor cell relaxation status to the UEs of the serving NG-RAN node so that the UEs are made aware of neighbor cell reference signal provision scheme in case the UEs want to perform measurements on said neighbor.
  • each cell may broadcast its current measurement relaxation decision via SIB broadcasting, so the UE reading the system information (SI) could take the information into account when defining its own UE measurement relaxation status.
  • SIB broadcasting system information
  • the first radio network node 104 is exemplified as a gNB-CU.
  • the gNB-CU after having collected and analyzed the measurement relaxation related information, action 51 , distributes, action 52, the information for the Cells under control of a gNB-DU.
  • the gNB-DU(s) may decide, action 53, and execute the relaxation.
  • the relaxation is performed by the gNB-DU, who may further feedback, action 54, to gNB-CU how the relaxation is performed.
  • the first radio network node 104 is exemplified as a serving NG-RAN node.
  • the serving NG-RAN node may analyze and determine, action 61 , the measurement relaxation configuration.
  • the serving NG-RAN node may, with respect to the network energy saving and the UEs it is serving send to the UE the measurement relaxation configuration, action 62.
  • the UE 102 may analyze with the received configuration and the RRM, BFD, to determine how to execute the measurement relaxation, action 63. It should be noted that the UE 102 may take an existing measurement relaxation rule into account.
  • Action 64 the UE 102 may inform the network how the UE measurement relaxation is performed.
  • the serving NG-RAN node may include the UE measurement relaxation configuration in the handover messages.
  • the above communication may be carried over RRC, XnAP and F1AP on the existing messages, or new messages.
  • User Plan messages may also apply.
  • FIG. 6 shows the NG-RAN node configuring UE to perform measurement relaxation.
  • This IE includes information related to the Measurement Relaxation over Xn.
  • radio network node such as the first radio network node 104 or the second radio network node 106:
  • the measurement relaxation configuration optionally includes configuration related to how and which RSs are to be measured by the UEs of the cell. This can help the NW to relax some of the RS transmissions and further help the UE to know which RSs are still being transmitted to be used.
  • the UE measurement relaxation configuration can additionally be provided together with the serving and neighboring cells DTRX pattern. In this case in one option, the NW can inform the UE if certain RSs are being transmitted during off period of DTX or not, or alternatively provide the configuration of UE behavior regarding measurement relaxation when DTRX is additionally configured for the NW.
  • the RRC idle/inactive UEs are configured via SIB message or RRC release or another type of dedicated signaling.
  • the RRC connected UEs are configured via dedicated signaling, e.g., RRC signaling, or SIB.
  • One or a set of UE measurement configuration relaxation related to serving and neighbor cells may be configured for the UE 102 and modified.
  • the UE 102 may receive this configuration from a first radio network node 104 or a second radio network node 106, which in one example, the first radio network node can be a serving cell and the second radio network node can be a neighbor cell.
  • the configuration of one node can be received by the UE 102 from another node or from the same node.
  • the UE 102 additionally may receive configuration of how and which RSs to measure during measurement relaxation. As such the UE 102 can ignore the RSs which are not being transmitted and save power.
  • the UE 102 may additionally receive the NW DTRX pattern of serving and neighbor cells.
  • the UE 102 may know if specific RSs are being transmitted or not according to the gNB DTRX pattern or the configuration of UE behavior with regard to the measurements if DTRX is additionally configured for the NW. E.g., the behavior can be that the UE can ignore measurements during DTX off duration as no RSs are being transmitted. o
  • the UE 102 (optionally) informs the NW of the fact that it has relaxed one or more of configured measurements. o
  • the UE 102 then performs the measurements in the relaxed mode according to the provided configuration.
  • the UE 102 then, if in need of neighbor cell measurements and if the neighbor cells are in relaxed mode, performs the measurements on neighbor cell reference signals according to the availability of such signals according to configuration from serving cell.
  • the UE 102 may receive the corresponding configuration from a dedicated signaling method, e.g., RRC release if in RRCJdle/inactive state, or RRC signaling if in connected state, or a SIB message.
  • a dedicated signaling method e.g., RRC release if in RRCJdle/inactive state, or RRC signaling if in connected state, or a SIB message.
  • the measurement relaxation configurations need to be communicated between two gNB-CUs.
  • the gNB- Clls inform their gNB-DUs to adapt the reference signal provision pattern (rate, power, etc.).
  • FIG. 7 depicts an example of the first radio network node 104, for handling communication in the communication network in accordance with embodiments herein.
  • the first radio network node 104 may comprise processing circuitry 701, e.g., one or more processors, configured to perform the methods herein.
  • the first radio network node 104 and/or the processing circuitry 701 may be configured to obtain, such as receive, the information relating the UE measurement relaxation status of the UE 102 and/or the second radio network node 106.
  • the first radio network node 104 and/or the processing circuitry 701 may be configured to obtain or determine the UE measurement relaxation status for the UE for the cell of the first and/or the second radio network node.
  • the first radio network node 104 and/or the processing circuitry 701 may be configured to obtain the reference signal transmission pattern for the cell served by the first radio network node 104 based on at least one indication, such as the second radio network nodes information, out of the one or more indications.
  • the first radio network node 104 and/or the processing circuitry 701 may be configured to design the reference signal transmission pattern for the cell served by the first radio network node based on the obtained information and/or determined UE measurement relaxation status.
  • the first radio network node 104 and/or the processing circuitry 701 is configured to transmit to the second radio network node 106, and/or the UE 102, the indication of UE measurement relaxation status relating to one or more reference signal provision parameters in the cell of the at least one of the radio network nodes.
  • the one or more reference signal provision parameters may comprise reference signal provision pattern, transmission rate and/or transmission power.
  • the UE measurement relaxation status may comprise a relaxation of measurements, a periodicity of RLM or BFD assessment, and/or an indication not to perform measurements on intra/inter-frequency and inter-RAT neighbors.
  • the first radio network node 104 and/or the processing circuitry 701 may be configured to receive the feedback from the UE 102 and/or the second radio network node 106 relating to UE measurement relaxation status and/or performance.
  • the first radio network node 104 and/or the processing circuitry 701 may be configured to determine the updated UE measurement relaxation status taking the feedback into account.
  • the first radio network node 104 and/or the processing circuitry 701 may be configured to transmit the updated indication to the second radio network node 106, and/or the UE 102, indicating the UE measurement relaxation status relating to one or more reference signal provision parameters in a cell of at least one of the radio network nodes.
  • the first radio network node 104 further comprises a memory 705.
  • the first radio network node 104 may comprise a communication interface
  • a transmitter such as comprising a transmitter, a receiver, a transceiver, and/or one or more antennas.
  • the methods according to the embodiments described herein for the first radio network node 104 are respectively implemented using e.g., a computer program product 707 or a computer program, comprising instructions, i.e. , software code portions, which, when executed on at least one processor, cause the at least one processor to carry out the actions described herein, as performed by the first radio network node 104.
  • the computer program product 707 may be stored on a computer-readable storage medium 708, e.g. a disc, a universal serial bus (USB) stick or similar.
  • the computer- readable storage medium 708, having stored thereon the computer program product, may comprise the instructions which, when executed on at least one processor, cause the at least one processor to carry out the actions described herein, as performed by the first radio network node 104.
  • the computer-readable storage medium may be a transitory or a non-transitory computer-readable storage medium.
  • embodiments herein may disclose a first radio network node 104 for handling communication in a wireless communications network, wherein the first radio network node 104 comprises processing circuitry and a memory, the memory comprising instructions executable by the processing circuitry whereby the first radio network node 104 is operative to perform any of the methods herein.
  • FIG. 8 depicts an example of the second radio network node 106, for handling communication in the communication network in accordance with embodiments herein.
  • the second radio network node 106 may comprise processing circuitry 801 , e.g. one or more processors, configured to perform the methods herein.
  • the second radio network node 106 and/or the processing circuitry 801 is configured to receive from the first radio network node 104, the indication of the UE measurement relaxation status relating to one or more reference signal provision parameters in the cell of the first radio network node 104.
  • the one or more reference signal provision parameters may comprise a reference signal provision pattern, transmission rate and/or transmission power.
  • the UE measurement relaxation status may comprise a relaxation of measurements, a periodicity of RLM or BFD assessment, and/or an indication not to perform measurements on intra/inter-frequency and inter-RAT neighbors.
  • the second radio network node 106 and/or the processing circuitry 801 may be configured to determine the transmission pattern for reference signals or the reference signal pattern for the cell of the second radio network node 106 based on the indication.
  • the second radio network node 106 and/or the processing circuitry 801 may be configured to design the transmission pattern for reference signals in the cell of the second radio network node based on the received indication.
  • the second radio network node 106 and/or the processing circuitry 801 may be configured to obtain the reference signal transmission pattern for the cell served by the first radio network node based on at least one indication out of the one or more indications to be used to determine the reference signal transmission pattern for the cell served by the second radio network node 106.
  • the second radio network node 106 and/or the processing circuitry 801 may be configured to obtain the reference signal transmission pattern for the cell served by the first radio network node based on the indication to be used to determine the reference signal transmission pattern for the cell served by the second radio network node 106.
  • the second radio network node 106 and/or the processing circuitry 801 may be configured to follow the reference signal transmission pattern of the first radio network node 104.
  • the second radio network node 106 and/or the processing circuitry 801 may be configured to transmit to the first radio network node 104 the indication of the UE measurement relaxation status relating to one or more reference signal provision parameters in the cell of the second radio network node 106.
  • the second radio network node 106 and/or the processing circuitry 801 may be configured to perform one or more operations using the determined transmission pattern or reference signal pattern.
  • the second radio network node 106 and/or the processing circuitry 801 may be configured to transmit feedback to the first radio network node 104 relating to UE measurement relaxation status decision and/or performance.
  • the second radio network node 106 and/or the processing circuitry 801 may be configured to receive the updated indication from the first radio network node 104, indicating the updated UE measurement relaxation status relating to one or more reference signal provision parameters in the cell of the first radio network node.
  • the second radio network node 106 comprises a memory 805.
  • the memory 805 comprises one or more units to be used to store data on, such as indications, contexts, UE measurement relaxation statuses, thresholds, data related to nodes, and applications to perform the methods disclosed herein when being executed, and similar.
  • second radio network node 106 may comprise a communication interface 806 such as comprising a transmitter, a receiver, a transceiver, and/or one or more antennas.
  • the methods according to the embodiments described herein for the second radio network node 106 are respectively implemented using e.g., a computer program product 807 or a computer program, comprising instructions, i.e. , software code portions, which, when executed on at least one processor, cause the at least one processor to carry out the actions described herein, as performed by the second radio network node 106.
  • the computer program product 807 may be stored on a computer-readable storage medium 808, e.g. a disc, a universal serial bus (USB) stick or similar.
  • the computer-readable storage medium 808, having stored thereon the computer program product, may comprise the instructions which, when executed on at least one processor, cause the at least one processor to carry out the actions described herein, as performed by the second radio network node 106.
  • the computer-readable storage medium may be a transitory or a non-transitory computer-readable storage medium.
  • embodiments herein may disclose a second radio network node 106 for handling communication in a wireless communications network, wherein the second radio network node 106 comprises processing circuitry and a memory, the memory comprising instructions executable by the processing circuitry whereby the second radio network node 106 is operative to perform any of the methods herein.
  • FIG. 9 depicts an example of the UE 102, for handling communication in the communication network in accordance with embodiments herein.
  • the UE 102 may comprise processing circuitry 901 , e.g. one or more processors, configured to perform the methods herein.
  • processing circuitry 901 e.g. one or more processors, configured to perform the methods herein.
  • the UE 102 and/or the processing circuitry 901 may be configured to provide, such as transmit to the first radio network node 104 information relating the UE measurement relaxation status of the UE 102.
  • the UE 102 and/or the processing circuitry 901 is configured to receive the configuration data from the first radio network node 104 to configure the UE 102 with the UE measurement relaxation configuration relating to one or more reference signal provision parameters for one or more cells of the first and/or a second radio network node 106.
  • the one or more reference signal provision parameters may comprise the reference signal provision pattern, transmission rate and/or transmission power.
  • the UE 102 may be configured to, for example, receive the configuration data from the first radio network node 104 to configure the UE with a UE measurement relaxation configuration for the one or more cells of the first 104 and/or the second radio network node 106.
  • the UE measurement relaxation configuration may comprise a relaxation of measurements, a periodicity of RLM or BFD assessment, and/or an indication not to perform measurements on intra/inter-frequency and inter-RAT neighbors.
  • the UE 102 and/or the processing circuitry 901 may be configured to perform the one or more measurements based on the UE measurement relaxation configuration.
  • the UE 102 and/or the processing circuitry 901 may be configured to transmit feedback regarding the one or more measurements to the first radio network node 104 and/or the second radio network node 106.
  • the UE 102 may thus be configured to perform feedback regarding the one or more measurements.
  • the UE 102 and/or the processing circuitry 901 may be configured to receive from the first radio network node 104, the updated indication of UE measurement relaxation status relating to one or more reference signal provision parameters in a cell of at least one of the radio network nodes.
  • the UE 102 comprises a memory 905.
  • the memory 905 comprises one or more units to be used to store data on, such as indications, contexts, UE measurement relaxation statuses, thresholds, data related to nodes, and applications to perform the methods disclosed herein when being executed, and similar.
  • the UE 102 may comprise a communication interface 906 such as comprising a transmitter, a receiver, a transceiver, and/or one or more antennas.
  • the methods according to the embodiments described herein for the UE 102 are respectively implemented using e.g., a computer program product 907 or a computer program, comprising instructions, i.e. , software code portions, which, when executed on at least one processor, cause the at least one processor to carry out the actions described herein, as performed by the UE 102.
  • the computer program product 907 may be stored on a computer-readable storage medium 908, e g. a disc, a universal serial bus (USB) stick or similar.
  • the computer-readable storage medium 908, having stored thereon the computer program product may comprise the instructions which, when executed on at least one processor, cause the at least one processor to carry out the actions described herein, as performed by the UE 102.
  • the computer-readable storage medium may be a transitory or a non-transitory computer-readable storage medium.
  • embodiments herein may disclose a UE 102 for handling communication in a wireless communications network, wherein the UE 102 comprises processing circuitry and a memory, the memory comprising instructions executable by the processing circuitry whereby the UE 102 is operative to perform any of the methods herein.
  • a more general term “network node” is used and it can correspond to any type of radio-network node or any network node, which communicates with a wireless device and/or with another network node.
  • network nodes are NodeB, MeNB, SeNB, a network node belonging to Master cell group (MCG) or Secondary cell group (SCG), base station (BS), multi-standard radio (MSR) radio node such as MSR BS, eNodeB, network controller, radio-network controller (RNC), base station controller (BSC), relay, donor node controlling relay, base transceiver station (BTS), access point (AP), transmission points, transmission nodes, Remote radio Unit (RRU), Remote Radio Head (RRH), nodes in distributed antenna system (DAS), etc.
  • MCG Master cell group
  • SCG Secondary cell group
  • MSR multi-standard radio
  • RNC radio-network controller
  • BSC base station controller
  • relay donor node controlling relay, base transceiver station (BTS), access point (AP),
  • the non-limiting term wireless device or user equipment refers to any type of wireless device communicating with a network node and/or with another wireless device in a cellular or mobile communication system.
  • UE user equipment
  • Examples of UE are loT capable device, target device, device to device (D2D) UE, proximity capable UE (aka ProSe UE), machine type UE or UE capable of machine to machine (M2M) communication, Tablet, mobile terminals, smart phone, laptop embedded equipped (LEE), laptop mounted equipment (LME), USB dongles, etc.
  • Embodiments are applicable to any RAT or multi-RAT systems, where the wireless device receives and/or transmit signals (e.g. data) e.g.
  • New Radio NR
  • Wi-Fi Long Term Evolution
  • LTE Long Term Evolution
  • LTE-Advanced Wideband Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GSM/EDGE Global System for Mobile communications/enhanced Data rate for GSM Evolution
  • WiMax Worldwide Interoperability for Microwave Access
  • UMB Ultra Mobile Broadband
  • ASIC application-specific integrated circuit
  • processors or “controller” as used herein does not exclusively refer to hardware capable of executing software and may implicitly include, without limitation, digital signal processor (DSP) hardware and/or program or application data. Other hardware, conventional and/or custom, may also be included. Designers of communications devices will appreciate the cost, performance, and maintenance trade-offs inherent in these design choices.
  • DSP digital signal processor
  • FIG. 10 shows a telecommunication network connected via an intermediate network to a host computer in accordance with some embodiments.
  • a communication system includes a telecommunication network 3210, such as a 3GPP-type cellular network, which comprises access network 3211, such as a radio access network, and core network 3214.
  • Access network 3211 comprises a plurality of base stations 3212a, 3212b, 3212c, such as NBs, eNBs, gNBs or other types of wireless access points being examples of the radio network node 12 above, each defining a corresponding coverage area 3213a, 3213b, 3213c.
  • Each base station 3212a, 3212b, 3212c is connectable to core network 3214 over a wired or wireless connection 3215.
  • a first UE 3291 located in coverage area 3213c is configured to wirelessly connect to, or be paged by, the corresponding base station 3212c.
  • a second UE 3292 in coverage area 3213a is wirelessly connectable to the corresponding base station 3212a. While a plurality of UEs 3291, 3292 are illustrated in this example being examples of the wireless device 10 above, the disclosed embodiments are equally applicable to a situation where a sole UE is in the coverage area or where a sole UE is connecting to the corresponding base station 3212.
  • Telecommunication network 3210 is itself connected to host computer 3230, which may be embodied in the hardware and/or software of a standalone server, a cloud- implemented server, a distributed server or as processing resources in a server farm.
  • Host computer 3230 may be under the ownership or control of a service provider, or may be operated by the service provider or on behalf of the service provider.
  • Connections 3221 and 3222 between telecommunication network 3210 and host computer 3230 may extend directly from core network 3214 to host computer 3230 or may go via an optional intermediate network 3220.
  • Intermediate network 3220 may be one of, or a combination of more than one of, a public, private or hosted network; intermediate network 3220, if any, may be a backbone network or the Internet; in particular, intermediate network 3220 may comprise two or more sub-networks (not shown).
  • the communication system of FIG. 10 as a whole enables connectivity between the connected UEs 3291, 3292 and host computer 3230.
  • the connectivity may be described as an over-the-top (OTT) connection 3250.
  • Host computer 3230 and the connected UEs 3291, 3292 are configured to communicate data and/or signalling via OTT connection 3250, using access network 3211 , core network 3214, any intermediate network 3220 and possible further infrastructure (not shown) as intermediaries.
  • OTT connection 3250 may be transparent in the sense that the participating communication devices through which OTT connection 3250 passes are unaware of routing of uplink and downlink communications.
  • base station 3212 may not or need not be informed about the past routing of an incoming downlink communication with data originating from host computer 3230 to be forwarded (e.g., handed over) to a connected UE 3291. Similarly, base station 3212 need not be aware of the future routing of an outgoing uplink communication originating from the UE 3291 towards the host computer 3230.
  • FIG. 11 shows a host computer communicating via a base station and with a user equipment over a partially wireless connection in accordance with some embodiments
  • host computer 3310 comprises hardware 3315 including communication interface 3316 configured to set up and maintain a wired or wireless connection with an interface of a different communication device of communication system 3300.
  • Host computer 3310 further comprises processing circuitry 3318, which may have storage and/or processing capabilities.
  • processing circuitry 3318 may comprise one or more programmable processors, application-specific integrated circuits, field programmable gate arrays or combinations of these (not shown) adapted to execute instructions.
  • Host computer 3310 further comprises software 3311 , which is stored in or accessible by host computer 3310 and executable by processing circuitry 3318.
  • Software 3311 includes host application 3312.
  • Host application 3312 may be operable to provide a service to a remote user, such as UE 3330 connecting via OTT connection 3350 terminating at UE 3330 and host computer 3310. In providing the service to the remote user, host application 3312 may provide user data which is transmitted using OTT connection 3350.
  • Communication system 3300 further includes base station 3320 provided in a telecommunication system and comprising hardware 3325 enabling it to communicate with host computer 3310 and with UE 3330.
  • Hardware 3325 may include communication interface 3326 for setting up and maintaining a wired or wireless connection with an interface of a different communication device of communication system 3300, as well as radio interface 3327 for setting up and maintaining at least wireless connection 3370 with UE 3330 located in a coverage area (not shown in FIG. 11) served by base station 3320.
  • Communication interface 3326 may be configured to facilitate connection 3360 to host computer 3310. Connection 3360 may be direct or it may pass through a core network (not shown in FIG. 11) of the telecommunication system and/or through one or more intermediate networks outside the telecommunication system.
  • hardware 3325 of base station 3320 further includes processing circuitry 3328, which may comprise one or more programmable processors, application-specific integrated circuits, field programmable gate arrays or combinations of these (not shown) adapted to execute instructions.
  • Base station 3320 further has software 3321 stored internally or accessible via an external connection.
  • Communication system 3300 further includes UE 3330 already referred to. It’s hardware 3333 may include radio interface 3337 configured to set up and maintain wireless connection 3370 with a base station serving a coverage area in which UE 3330 is currently located.
  • Hardware 3333 of UE 3330 further includes processing circuitry 3338, which may comprise one or more programmable processors, application-specific integrated circuits, field programmable gate arrays or combinations of these (not shown) adapted to execute instructions.
  • UE 3330 further comprises software 3331, which is stored in or accessible by UE 3330 and executable by processing circuitry 3338.
  • Software 3331 includes client application 3332. Client application 3332 may be operable to provide a service to a human or non-human user via UE 3330, with the support of host computer 3310.
  • an executing host application 3312 may communicate with the executing client application 3332 via OTT connection 3350 terminating at UE 3330 and host computer 3310.
  • client application 3332 may receive request data from host application 3312 and provide user data in response to the request data.
  • OTT connection 3350 may transfer both the request data and the user data.
  • Client application 3332 may interact with the user to generate the user data that it provides.
  • host computer 3310, base station 3320 and UE 3330 illustrated in FIG. 11 may be similar or identical to host computer 3230, one of base stations 3212a, 3212b, 3212c and one of UEs 3291, 3292 of FIG. 10, respectively.
  • the inner workings of these entities may be as shown in FIG. 11 and independently, the surrounding network topology may be that of FIG. 10.
  • OTT connection 3350 has been drawn abstractly to illustrate the communication between host computer 3310 and UE 3330 via base station 3320, without explicit reference to any intermediary devices and the precise routing of messages via these devices.
  • Network infrastructure may determine the routing, which it may be configured to hide from UE 3330 or from the service provider operating host computer 3310, or both. While OTT connection 3350 is active, the network infrastructure may further take decisions by which it dynamically changes the routing (e.g., on the basis of load balancing consideration or reconfiguration of the network).
  • Wireless connection 3370 between UE 3330 and base station 3320 is in accordance with the teachings of the embodiments described throughout this disclosure.
  • One or more of the various embodiments improve the performance of OTT services provided to UE 3330 using OTT connection 3350, in which wireless connection 3370 forms the last segment. More precisely, the teachings of these embodiments make it possible to communicate in an energy efficient manner and may improve latency and thereby provide benefits such as extended battery lifetime.
  • a measurement procedure may be provided for the purpose of monitoring data rate, latency and other factors on which the one or more embodiments improve.
  • the measurement procedure and/or the network functionality for reconfiguring OTT connection 3350 may be implemented in software 3311 and hardware 3315 of host computer 3310 or in software 3331 and hardware 3333 of UE 3330, or both.
  • sensors (not shown) may be deployed in or in association with communication devices through which OTT connection 3350 passes; the sensors may participate in the measurement procedure by supplying values of the monitored quantities exemplified above, or supplying values of other physical quantities from which software 3311, 3331 may compute or estimate the monitored quantities.
  • the reconfiguring of OTT connection 3350 may include message format, retransmission settings, preferred routing etc.; the reconfiguring need not affect base station 3320, and it may be unknown or imperceptible to base station 3320. Such procedures and functionalities may be known and practiced in the art.
  • measurements may involve proprietary UE signalling facilitating host computer 3310’s measurements of throughput, propagation times, latency and the like.
  • the measurements may be implemented in that software 3311 and 3331 causes messages to be transmitted, in particular empty or ‘dummy’ messages, using OTT connection 3350 while it monitors propagation times, errors, etc.
  • FIG. 12 shows methods implemented in a communication system including a host computer, a base station and a user equipment in accordance with some embodiments.
  • FIG. 12 is a flowchart illustrating a method implemented in a communication system, in accordance with one embodiment.
  • the communication system includes a host computer, a base station and a UE which may be those described with reference to FIG. 10 and Fig. 11. For simplicity of the present disclosure, only drawing references to FIG. 12 will be included in this section.
  • the host computer provides user data.
  • substep 3411 (which may be optional) of step 3410, the host computer provides the user data by executing a host application.
  • the host computer initiates a transmission carrying the user data to the UE.
  • step 3430 the base station transmits to the UE the user data which was carried in the transmission that the host computer initiated, in accordance with the teachings of the embodiments described throughout this disclosure.
  • step 3440 the UE executes a client application associated with the host application executed by the host computer.
  • FIG. 13 shows methods implemented in a communication system including a host computer, a base station and a user equipment in accordance with some embodiments.
  • FIG. 13 is a flowchart illustrating a method implemented in a communication system, in accordance with one embodiment.
  • the communication system includes a host computer, a base station and a UE which may be those described with reference to FIGs. 10 and 11. For simplicity of the present disclosure, only drawing references to FIG. 13 will be included in this section.
  • the host computer provides user data.
  • the host computer provides the user data by executing a host application.
  • the host computer initiates a transmission carrying the user data to the UE. The transmission may pass via the base station, in accordance with the teachings of the embodiments described throughout this disclosure.
  • step 3530 (which may be optional), the UE receives the user data carried in the transmission.
  • FIG. 14 shows methods implemented in a communication system including a host computer, a base station and a user equipment in accordance with some embodiments.
  • FIG. 14 is a flowchart illustrating a method implemented in a communication system, in accordance with one embodiment.
  • the communication system includes a host computer, a base station and a UE which may be those described with reference to FIGs. 10 and 11. For simplicity of the present disclosure, only drawing references to FIG. 14 will be included in this section.
  • step 3610 the UE receives input data provided by the host computer. Additionally or alternatively, in step 3620, the UE provides user data.
  • substep 3621 (which may be optional) of step 3620, the UE provides the user data by executing a client application.
  • substep 3611 (which may be optional) of step 3610, the UE executes a client application which provides the user data in reaction to the received input data provided by the host computer.
  • the executed client application may further consider user input received from the user.
  • the UE initiates, in substep 3630 (which may be optional), transmission of the user data to the host computer.
  • step 3640 of the method the host computer receives the user data transmitted from the UE, in accordance with the teachings of the embodiments described throughout this disclosure.
  • FIG. 15 shows methods implemented in a communication system including a host computer, a base station and a user equipment in accordance with some embodiments.
  • FIG. 15 is a flowchart illustrating a method implemented in a communication system, in accordance with one embodiment.
  • the communication system includes a host computer, a base station and a UE which may be those described with reference to FIG. 10 and FIG. 11. For simplicity of the present disclosure, only drawing references to FIG. 15 will be included in this section.
  • the base station receives user data from the UE.
  • the base station initiates transmission of the received user data to the host computer.
  • step 3730 (which may be optional)
  • the host computer receives the user data carried in the transmission initiated by the base station.
  • any appropriate steps, methods, features, functions, or benefits disclosed herein may be performed through one or more functional units or modules of one or more virtual apparatuses.
  • Each virtual apparatus may comprise a number of these functional units.
  • These functional units may be implemented via processing circuitry, which may include one or more microprocessor or microcontrollers, as well as other digital hardware, which may include DSPs, special-purpose digital logic, and the like.
  • the processing circuitry may be configured to execute program code stored in memory, which may include one or several types of memory such as Read-Only Memory (ROM), Random-Access Memory (RAM), cache memory, flash memory devices, optical storage devices, etc.
  • Program code stored in memory includes program instructions for executing one or more telecommunications and/or data communications protocols as well as instructions for carrying out one or more of the techniques described herein.
  • the processing circuitry may be used to cause the respective functional unit to perform corresponding functions according one or more embodiments of the present disclosure.

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

Abstract

Des modes de réalisation de la présente invention peuvent concerner un procédé mis en œuvre par un premier nœud de réseau radio (104) pour gérer des mesures dans un réseau de communication sans fil (10). Le premier nœud de réseau radio (104) transmet à un second nœud de réseau radio (106), et/ou à un équipement utilisateur, UE, (102), une indication d'un état de relaxation de mesure UE relatif à un ou plusieurs paramètres de fourniture de signal de référence dans une cellule d'au moins l'un des nœuds de réseau radio.
PCT/SE2023/050949 2022-09-27 2023-09-27 Équipement utilisateur, nœuds de réseau radio et procédés de gestion de communications WO2024072295A1 (fr)

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EP2439991A1 (fr) * 2009-07-03 2012-04-11 ZTE Corporation Procédé et système de gestion de mobilité d'un terminal dans un système relais sans fil
WO2017186309A1 (fr) * 2016-04-29 2017-11-02 Huawei Technologies Co., Ltd. Optimisation de modèle de mesure pour améliorer une prédiction de canal dans des réseaux sans fil
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