Apparatus and method for QoE measurement

Abstract

The present disclosure relates to apparatus and methods for quality of experience (QoE) measurements for services received by user equipment (UE) in an idle / inactive state. In some aspects, the UE device may include: at least one antenna; at least one radio coupled to the at least one antenna and configured to perform wireless communications using at least one radio access technology; and one or more processors coupled to the at least one radio, wherein the one or more processors are configured to cause the UE device to: receive, from a base station (BS), a Quality of Experience (QoE) measurement configuration for a service to be received by the UE device in an idle or inactive state; performing a QoE measurement on the service received by the UE device in an idle or inactive state according to the QoE measurement configuration; generating a QoE measurement report based on the QoE measurement; and sending the QoE measurement report to the BS.

Description

Technical Field

[0001] The present application generally relates to wireless communication systems, including apparatus and methods for supporting user quality of experience (QoE) measurements for services received by a user equipment (UE) device in an idle / inactive state. Background Art

[0002] Wireless mobile communication technologies use various standards and protocols to send data between base stations and wireless communication devices. Wireless communication system standards and protocols may include, for example, the 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) (e.g., 4G), 3GPP New Radio (NR) (e.g., 5G), and the IEEE 802.11 standard for wireless local area networks (WLANs) (commonly referred to within industry organizations as WLANs). ).

[0003] As envisioned by 3GPP, different wireless communication system standards and protocols may use various radio access networks (RANs) to communicate between base stations of the RAN (which may also sometimes be referred to as RAN nodes, network nodes, or simply nodes) and wireless communication devices referred to as user equipment (UE). 3GPP RANs may include, for example, Global System for Mobile Communications (GSM), Enhanced Data Rates for GSM Evolution (EDGE) RAN (GERAN), Universal Terrestrial Radio Access Network (UTRAN), Evolved Universal Terrestrial Radio Access Network (E-UTRAN), and / or Next Generation Radio Access Network (NG-RAN).

[0004] Each RAN may use one or more radio access technologies (RATs) to perform communications between base stations and UEs. For example, GERAN implements GSM and / or EDGE RAT, UTRAN implements Universal Mobile Telecommunications System (UMTS) RAT or other 3GPP RAT, E-UTRAN implements LTE RAT (sometimes referred to as LTE), and NG-RAN implements NR RAT (sometimes referred to herein as 5G RAT, 5G NR RAT, or NR). In some deployments, E-UTRAN may also implement NR RAT. In some deployments, NG-RAN may also implement LTE RAT.

[0005] The base stations used by the RAN may correspond to the RAN. An example of an E-UTRAN base station is an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) Node B (also commonly denoted as an evolved Node B, enhanced Node B, eNodeB, or eNB). An example of an NG-RAN base station is a Next Generation Node B (also sometimes referred to as a gNodeB or gNB).

[0006] The RAN provides communication services together with external entities through its connection with the Core Network (CN). For example, E-UTRAN may utilize the Evolved Packet Core (EPC) and NG-RAN may utilize the 5G Core Network (5GC).

[0007] The UE may perform quality of experience (QoE) measurements for the services it receives and report the QoE measurements to the network. The network may obtain a QoE measurement report from the UE and report the QoE measurement report to a centralized server (e.g., an operations management and maintenance (OAM) server or a QoE server), which may use the QoE measurement report to improve communication quality and device performance in the network. Improvements to QoE measurement and reporting may be beneficial. Summary of the invention

[0008] Some aspects relate to a user equipment (UE) device. The UE device includes at least one antenna, at least one radio component coupled to the at least one antenna and configured to perform wireless communication using at least one radio access technology, and one or more processors coupled to the at least one radio component. The one or more processors are configured to cause the UE device to receive a user experience quality (QoE) measurement configuration for a service to be received by the UE device in an idle or inactive state from a base station (BS); perform QoE measurement on the service received by the UE device in an idle or inactive state according to the QoE measurement configuration; generate a QoE measurement report based on the QoE measurement; and send the QoE measurement report to the BS.

[0009] Other aspects relate to a base station (BS). The BS includes at least one antenna, at least one radio component coupled to the at least one antenna and configured to perform wireless communication using at least one radio access technology, and one or more processors coupled to the at least one radio component. The one or more processors are configured to cause the BS to: send to a user equipment (UE) device a user experience quality (QoE) measurement configuration for a service to be received by the UE device in an idle or inactive state; and receive a QoE measurement report for the service from the UE device.

[0010] Still other aspects relate to a non-transitory computer-readable storage medium storing program instructions that can be executed by one or more processors to cause a user equipment (UE) device to: receive from a base station (BS) a user experience quality (QoE) measurement configuration for a service to be received by the UE device in an idle or inactive state; perform QoE measurement on the service received by the UE device in an idle or inactive state according to the QoE measurement configuration; generate a QoE measurement report based on the QoE measurement; and send the QoE measurement report to the BS.

[0011] Still other aspects relate to a non-transitory computer-readable storage medium storing program instructions that can be executed by one or more processors to cause a base station (BS) to: send to a user equipment (UE) device a user quality of experience (QoE) measurement configuration for a service to be received by the UE device in an idle or inactive state; and receive a QoE measurement report for the service from the UE device.

[0012] The techniques described herein may be implemented in and / or used with a plurality of different types of devices, including, but not limited to, any of cellular base stations, cellular telephones, tablet computers, wearable computing devices, portable media players, and a variety of other computing devices.

[0013] This summary is intended to provide a brief overview of some of the topics described in this document. Therefore, it should be understood that the above features are only examples and should not be construed as narrowing the scope or essence of the topics described herein in any way. Other features, aspects, and advantages of the topics described herein will become apparent through the following detailed description, drawings, and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] To easily identify the discussion of any particular element or action, the most significant digit(s) in a reference number refers to the drawing number that first introduces the element.

[0015] Figure 1 An example architecture of a wireless communication system in accordance with various aspects disclosed herein is shown.

[0016] Figure 2

[0013] A system for performing signaling between a wireless device and a network device in accordance with various aspects disclosed herein is shown.

[0017] Figure 3 is a flow chart illustrating a first exemplary method for QoE measurement and reporting in accordance with aspects disclosed herein.

[0018] Figure 4is a flow chart illustrating a second exemplary method for QoE measurement and reporting in accordance with aspects disclosed herein.

[0019] Figure 5 is a flow chart illustrating a third exemplary method for QoE measurement and reporting in accordance with aspects disclosed herein.

[0020] Figure 6 is a flow chart illustrating a fourth exemplary method for QoE measurement and reporting in accordance with aspects disclosed herein.

[0021] Figure 7 is a flow chart illustrating an exemplary method for QoE reporting in a connected state according to aspects disclosed herein.

[0022] Figure 8 is a flow chart illustrating another exemplary method for QoE reporting in a connected state according to aspects disclosed herein.

[0023] Fig. 9 is a flow chart illustrating an exemplary method for QoE measurement and reporting by a UE device in accordance with various aspects disclosed herein.

[0024] Fig.10 is a flow chart illustrating an exemplary method for QoE measurement and reporting by a BS in accordance with various aspects disclosed herein.

[0025] Although the features described herein are susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and described in detail herein. However, it should be understood that the drawings and detailed description thereof are not intended to be limited to the specific forms disclosed, but on the contrary, are intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the subject matter as defined by the appended claims. DETAILED DESCRIPTION

[0026] Various embodiments are described with respect to UE. However, reference to UE is provided for illustrative purposes only. The example embodiments may be used with any electronic component that can establish a connection with a network and is configured with hardware, software and / or firmware for exchanging information and data with the network. Therefore, UE as described herein is used to represent any appropriate electronic component. Examples of UE may include mobile devices, personal digital assistants (PDAs), tablet computers, laptop computers, personal computers, Internet of Things (IoT) devices, or machine type communication (MTC) devices, etc., which may be implemented in various objects such as appliances or vehicles, meters, etc.

[0027] Figure 1An example architecture of a wireless communication system 100 is illustrated in accordance with an embodiment disclosed herein. The description provided below is for an example wireless communication system 100 operating in conjunction with the LTE system standard and / or the 5G or NR system standard provided in the 3GPP technical specifications.

[0028] like Figure 1 As shown, wireless communication system 100 includes UE 102 and UE 104 (although any number of UEs may be used). In this example, UE 102 and UE 104 are illustrated as smartphones (e.g., handheld touch screen mobile computing devices capable of connecting to one or more cellular networks), but may also include any mobile or non-mobile computing device configured for wireless communication.

[0029] UE 102 and UE 104 may be configured to be communicatively coupled to RAN 106. In an embodiment, RAN 106 may be NG-RAN, E-UTRAN, etc. UE 102 and UE 104 utilize connections (or channels) (shown as connection 108 and connection 110, respectively) with RAN 106, where each connection (or channel) includes a physical communication interface. RAN 106 may include one or more base stations, such as base station 112 and base station 114, to implement connection 108 and connection 110.

[0030] In this example, connection 108 and connection 110 are the air interfaces that enable such communicative coupling and may conform to the RAT used by RAN 106 , such as, for example, LTE and / or NR.

[0031] In some embodiments, UE 102 and UE 104 may also directly exchange communication data via side link interface 116. UE 104 is shown as being configured to access an access point (shown as AP 118) via connection 120. By way of example, connection 120 may include a local wireless connection, such as a connection conforming to any IEEE 802.11 protocol, wherein AP 118 may include In this example, AP 118 may be connected to another network (eg, the Internet) without going through CN 124.

[0032] In an embodiment, UE 102 and UE 104 may be configured to communicate with each other or with base station 112 and / or base station 114 over a multi-carrier communication channel using orthogonal frequency division multiplexing (OFDM) communication signals according to various communication techniques, such as but not limited to orthogonal frequency division multiple access (OFDMA) communication techniques (e.g., for downlink communication) or single carrier frequency division multiple access (SC-FDMA) communication techniques (e.g., for uplink and ProSe or sidelink communication), although the scope of the embodiment is not limited in this respect. The OFDM signal may include multiple orthogonal subcarriers.

[0033] In some embodiments, all or part of base station 112 or base station 114 may be implemented as one or more software entities running on a server computer as part of a virtual network. In addition, or in other embodiments, base station 112 or base station 114 may be configured to communicate with each other via interface 122. In an embodiment where wireless communication system 100 is an LTE system (e.g., when CN124 is EPC), interface 122 may be an X2 interface. The X2 interface may be defined between two or more base stations (e.g., two or more eNBs, etc.) connected to EPC and / or between two eNBs connected to EPC. In an embodiment where wireless communication system 100 is an NR system (e.g., when CN 124 is 5GC), interface 122 may be an Xn interface. The Xn interface is defined between two or more base stations (e.g., two or more gNBs, etc.) connected to 5GC, between base station 112 (e.g., gNB) and eNB connected to 5GC, and / or between two eNBs connected to 5GC (e.g., CN 124).

[0034] The RAN 106 is shown as being communicatively coupled to the CN 124. The CN 124 may include one or more network elements 126 configured to provide various data and telecommunication services to customers / subscribers (e.g., UE 102 and users of UE 104) connected to the CN 124 via the RAN 106. The components of the CN 124 may be implemented in one physical device or separate physical devices including components for reading and executing instructions from a machine-readable or computer-readable medium (e.g., a non-transitory machine-readable storage medium).

[0035] In an embodiment, CN 124 may be an EPC, and RAN 106 may be connected to CN 124 via an S1 interface 128. In an embodiment, S1 interface 128 may be divided into two parts: an S1 user plane (S1-U) interface that carries traffic data between base station 112 or base station 114 and a serving gateway (S-GW); and an S1-MME interface that is a signaling interface between base station 112 or base station 114 and a mobility management entity (MME).

[0036] In an embodiment, CN 124 may be a 5GC, and RAN 106 may be connected to CN 124 via an NG interface 128. In an embodiment, NG interface 128 may be divided into two parts: an NG user plane (NG-U) interface that carries service data between base station 112 or base station 114 and a user plane function (UPF); and an S1 control plane (NG-C) interface that is a signaling interface between base station 112 or base station 114 and an access and mobility management function (AMF).

[0037] Generally speaking, application server 130 may be an element that provides applications (e.g., packet-switched data services) that use Internet Protocol (IP) bearer resources with CN 124. Application server 130 may also be configured to support one or more communication services (e.g., VoIP sessions, group communication sessions, etc.) for UE 102 and UE 104 via CN 124. Application server 130 may communicate with CN 124 via IP communication interface 132.

[0038] Figure 2 A system 200 for performing signaling 234 between a wireless device 202 and a network device 218 according to embodiments disclosed herein is shown. The system 200 may be part of a wireless communication system as described herein. The wireless device 202 may be, for example, a UE of a wireless communication system. The network device 218 may be, for example, a base station (e.g., an eNB or a gNB) of a wireless communication system.

[0039] The wireless device 202 may include one or more processors 204. The processor 204 may execute instructions to perform various operations of the wireless device 202, as described herein. The processor 204 may include one or more baseband processors implemented using, for example, a central processing unit (CPU), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a controller, a field programmable gate array (FPGA) device, another hardware device, a firmware device, or any combination thereof configured to perform the operations described herein.

[0040] The wireless device 202 may include a memory 206. The memory 206 may be a non-transitory computer-readable storage medium that stores instructions 208 (which may include, for example, instructions executed by the processor 204). The instructions 208 may also be referred to as program code or a computer program. The memory 206 may also store data used by the processor 204 and results calculated by the processor.

[0041] The wireless device 202 may include one or more transceivers 210 that may use radio frequency (RF) transmitter and / or receiver circuitry that uses an antenna 212 of the wireless device 202 to facilitate signaling (e.g., signaling 234) to and / or from the wireless device 202 with other devices (e.g., network device 218) according to a corresponding RAT.

[0042] The wireless device 202 may include one or more antennas 212 (e.g., one, two, four, or more). For embodiments with multiple antennas 212, the wireless device 202 may utilize the spatial diversity of such multiple antennas 212 to transmit and / or receive multiple different data streams on the same time-frequency resources. This behavior may be referred to as, for example, multiple-input multiple-output (MIMO) behavior (referring to the multiple antennas used at each of the transmitting device and the receiving device to implement this aspect). MIMO transmission by the wireless device 202 may be implemented based on precoding (or digital beamforming) applied at the wireless device 202, which multiplexes the data streams across the antennas 212 based on known or assumed channel characteristics, so that each data stream is received at an appropriate signal strength relative to the other streams and at a desired location in the spatial domain (e.g., the location of the receiver associated with the data stream). Certain embodiments may use a single-user MIMO (SU-MIMO) approach (where the data streams are all directed to a single receiver) and / or a multi-user MIMO (MU-MIMO) approach (where the individual data streams may be directed to individual (different) receivers in different locations in the spatial domain).

[0043] In certain embodiments with multiple antennas, the wireless device 202 may implement analog beamforming techniques whereby the phases of signals transmitted by the antennas 212 are relatively adjusted so that the (joint) transmissions of the antennas 212 can be directed (this is sometimes referred to as beam steering).

[0044] The wireless device 202 may include one or more interfaces 214. The interfaces 214 may be used to provide input to the wireless device 202 or output from the wireless device. For example, a wireless device 202 that is a UE may include an interface 214, such as a microphone, a speaker, a touch screen, buttons, etc., to allow a user of the UE to input and / or output to the UE. Other interfaces of such a UE may be composed of transmitters, receivers, and other circuits that allow communication between the UE and other devices (e.g., in addition to the transceiver 210 / antenna 212 described above), and may be based on known protocols (e.g., etc.) to perform the operation.

[0045] The network device 218 may include one or more processors 220. The processor 220 may execute instructions to perform various operations of the network device 218, as described herein. The processor 204 may include one or more baseband processors implemented using, for example, a CPU, a DSP, an ASIC, a controller, an FPGA device, another hardware device, a firmware device, or any combination thereof configured to perform the operations described herein.

[0046] The network device 218 may include a memory 222. The memory 222 may be a non-transitory computer-readable storage medium that stores instructions 224 (which may include, for example, instructions executed by the processor 220). The instructions 224 may also be referred to as program code or a computer program. The memory 222 may also store data used by the processor 220 and results calculated by the processor.

[0047] The network device 218 may include one or more transceivers 226, which may include RF transmitter and / or receiver circuits that use an antenna 228 of the network device 218 to facilitate signaling (e.g., signaling 234) to and / or from the network device 218 with other devices (e.g., wireless device 202) according to a corresponding RAT.

[0048] The network device 218 may include one or more antennas 228 (eg, one, two, four, or more). In embodiments with multiple antennas 228, the network device 218 may perform MIMO, digital beamforming, analog beamforming, beamsteering, etc. as described.

[0049] The network device 218 may include one or more interfaces 230. The interface 230 may be used to provide input to or output from the network device 218. For example, the network device 218 as a base station may include an interface 230 composed of a transmitter, a receiver, and other circuits (e.g., in addition to the transceiver 226 / antenna 228 described above), which enables the base station to communicate with other equipment in the core network and / or enables the base station to communicate with an external network, computer, database, etc., in order to achieve the purpose of performing operations, management, and maintenance of the base station or other equipment operably connected to the base station.

[0050] A UE device (e.g., UE device 102, 104, or 202) may have a quality of experience (QoE) measurement collection function to perform measurements for services it receives and report the QoE measurements to a serving base station (e.g., base station 112 or 114). The serving base station may obtain the QoE measurement report from the UE device and report the QoE measurement report to a centralized server (e.g., an operations management and maintenance (OAM) server or a QoE server), which may use the QoE measurement report to improve communication quality and device performance in the network. The QoE measurement collection function may collect application layer measurements (such as average throughput, initial payment delay, buffering level, etc.) for streaming services (i.e., HTTP dynamic adaptive streaming (DASH)), measurements for IMS multimedia telephony service (MTSI) services (such as impairment duration, real-time transport (RTP) packet loss rate, frame rate, jitter duration, etc.), and measurements for virtual reality (VR) services.

[0051] The QoE measurement feature can be activated in the Next Generation RAN (NG-RAN) in one of two ways, namely, by direct configuration from the Operation Administration and Maintenance (OAM system) or by signaling from OAM via the core network containing the UE-associated QoE configuration. The former is the so-called management-based activation, in which the NG-RAN node selects a UE that meets the required QoE measurement capability, area scope and slice scope. The latter is the so-called signaling-based activation, in which the OAM system initiates the QoE measurement activation for a specific UE.

[0052] One or more QoE measurement collection jobs may be activated at the UE per service type. Each QoE measurement configuration is uniquely identified by a QoE reference parameter. The parameter measConfigAppLayerId in RRC signaling is used to identify the application measurement configuration and reporting between the gNB and the UE. The UE may be configured by the gNB to report when a QoE measurement session starts or stops for an application measurement configuration.

[0053] QoE configuration deactivation may permanently stop all or some QoE measurement collection operations on the UE, resulting in the release of the corresponding QoE configuration in the UE.

[0054] In case of RAN overload, the QoE measurement collection suspension / resumption procedure can be used to suspend / resume the reporting of all QoE reports, or to suspend / resume QoE reporting in the UE according to the QoE configuration. When the UE receives the QoE suspension indication, the UE temporarily stores the application layer measurement report in the access stratum (AS) layer. When the UE receives the QoE resume indication, the UE transmits the stored application layer measurement report to the gNB.

[0055] Currently, QoE measurement configuration and reporting are only supported in the RRC_CONNECTED state. Operators can only obtain QoE information for services provided to UEs in the connected state, but not for services provided to UEs in the idle / inactive state (e.g., broadcast or multicast services (MBS)). Configuration and reporting techniques for supporting QoE measurements for services provided to UEs in the idle / inactive state may be beneficial.

[0056] Various embodiments related to QoE measurement configuration and reporting for services to be received by UEs in an idle / inactive state are provided below. For simplicity, MBS services are illustrated as examples of such services. Those skilled in the art will appreciate that this is not limiting and that the various aspects described herein may be applied to other services to be received by UEs in an idle / inactive state.

[0057] Figure 3 is a flow chart illustrating a first exemplary method for QoE measurement and reporting according to various aspects disclosed herein. Figure 2 Arrangement Figure 1 The diagram 300 is described with reference to the BS 112 and the UE 102. Those skilled in the art will appreciate that the process of the diagram 300 may be applied to Figure 1 BS 114 and UE 104.

[0058] The signaling diagram 300 relates to a scenario in which the network side including the BS provides QoE measurement configuration related to the service received by the UE device in the idle / inactive state through broadcast, and the UE is triggered to enter the connected state immediately or based on some conditions to send the QoE measurement report.

[0059] In 301, BS 112 sends a system information block (SIB) to UE 102. The SIB may carry QoE measurement configurations for services to be received by UE devices (e.g., MBS) in an idle or inactive state. According to one aspect, the SIB may be SIB20 or SIB21 that was previously defined but now includes a newly defined QoE measurement configuration related to MBS. According to another aspect, the SIB may be a newly defined SIB dedicated to providing QoE measurement configurations related to MBS.

[0060] The QoE measurement configuration carried by the SIB may indicate to the UE device a specific MBS service for which the QoE measurement is to be performed by specifying a temporary mobile group identity (TMGI). In addition or alternatively, the QoE measurement configuration may indicate a list of one or more public land mobile networks (PLMNs) or a list of one or more frequencies for which the UE device performs QoE measurement on the MBS service.

[0061] According to yet another aspect, the MBS-related QoE measurement configuration may not be carried in the SIB, but may be carried in a multicast control channel (MCCH) together with the MBS-related MBS session configuration as shown in 302 .

[0062] In 302, BS 112 sends a MCCH message to UE 102. MCCH is used to provide MBS session configuration related to MBS. As discussed above, MCCH may also carry QoE measurement configuration related to MBS.

[0063] The QoE measurement configuration carried in the MCCH may indicate, for example, by specifying an MBS protocol data unit (PDU) session ID or TMGI, a specific MBS service for which the UE device performs QoE measurement. In addition or alternatively, the QoE measurement configuration may indicate a list of one or more PLMNs or a list of one or more frequencies for which the UE device performs QoE measurement on the MBS service.

[0064] In 303 , BS 112 provides MBS service to UE 102 .

[0065] In 304, the UE 102 performs QoE measurement on a service received by the UE 102 in an idle or inactive state according to the QoE measurement configuration.

[0066] According to one aspect, when the indicated service is activated for transmission (eg, via paging), UE 102 can perform QoE measurements.

[0067] Additionally or alternatively, when the indicated service satisfies at least one of the one or more conditions, the UE 102 may perform QoE measurements. The conditions may include at least that the UE device 102 supports and is interested in the service and has the ability to perform QoE measurements in an idle or inactive state.

[0068] In addition, the conditions may include at least one of the following: 1) the service is provided on the cell where the UE device is currently residing; 2) the service belongs to the same operator as the cell where the UE device is currently residing; 3) the service belongs to a list of one or more PLMNs, equivalent PLMNs (EPLMNs), or visited PLMNs (VPLMNs) that the UE device has; or 4) the service belongs to a list of one or more operators or PLMNs indicated in the QoE measurement configuration.

[0069] As an example, in the case where the UE 102 in idle / inactive state camps on cell 1 at frequency F1 and receives MBS service X on cell 2 at frequency F2, the UE 102 does not need to perform QoE measurement for the MBS service X.

[0070] As another example, in the case where the UE 102 in idle / inactive state camps on cell 1 belonging to PLMN A at frequency F1 and receives MBS service X provided by PLMN B, the UE 102 does not need to perform QoE measurement for the MBS service X.

[0071] As yet another example, in the case where the UE 102 in the idle / inactive state is not interested in the MBS service X configured for QoE measurement, the UE 102 does not need to perform QoE measurement for the MBS service X.

[0072] UE 102 may generate a QoE measurement report based on the QoE measurements. According to one aspect, UE 102 may record QoE measurements for services belonging to the same operator. Additionally or alternatively, UE 102 may record location information and timestamps associated with the QoE measurements. The location information may be a cell ID or frequency ID, or a global navigation satellite system (GNSS) location.

[0073] The UE device 102 may stop the QoE measurement when determining that at least one of the one or more conditions is satisfied. The condition may include a buffer overflow for recording QoE measurement reports or a period for performing QoE measurement exceeding a threshold.

[0074] In 305, according to one aspect, UE 102 can be immediately triggered to enter a connected state when a QoE measurement report is ready.

[0075] According to another aspect, in 305, UE 102 may be triggered to enter a connected state based on determining that at least one of the one or more conditions is satisfied. The conditions may include that the amount of QoE measurement reports logged exceeds a threshold, or a buffer for logging QoE measurement reports overflows, or a used size of the buffer exceeds a threshold, etc.

[0076] In 306, upon triggering, UE 102 may establish an RRC connection with BS 112 via an RRC connection resumption / establishment procedure to enter a connected state.

[0077] In 307, UE 102 may send a QoE measurement report to BS 112 upon entering the connected state.

[0078] Figure 4 is a flow chart illustrating a second exemplary method for QoE measurement and reporting according to various aspects disclosed herein. Figure 2 Arrangement Figure 1The diagram 400 is described with reference to the BS 112 and the UE 102. Those skilled in the art will appreciate that the process of the diagram 400 may be applied to Figure 1 BS 114 and UE 104.

[0079] Signaling diagram 400 relates to a scenario in which a network side including a BS provides a QoE measurement configuration related to a service received by a UE device in an inactive state through broadcasting, and the UE is immediately triggered to enter a small data transmission (SDT) state to send a QoE measurement report. The SDT feature in the RRC inactive state can enable a UE in the RRC inactive state to send infrequent small data without the need for an RRC state transition.

[0080] Figure 4 Operations 401, 402, 403 and 404 can be performed with Figure 3 The operations 301, 302, 303 and 304 are the same or similar. Therefore, the above discussion in conjunction with 301, 302, 303 and 304 can be applied to 401, 402, 403 and 404, except that Figure 4 The operations in 401, 402, 403 and 404 only occur in the RRC inactive state. For simplicity, detailed discussion of 401, 402, 403 and 404 is omitted.

[0081] In 405, when the QoE measurement report is ready, the UE 102 can immediately trigger the SDT process. In this case, the network side should have previously configured the UE device so that the SDT can be triggered by the QoE report.

[0082] At 406 , when triggered, UE 102 may send a QoE measurement report to BS 112 via the SDT procedure.

[0083] Figure 5 is a flow chart illustrating a third exemplary method for QoE measurement and reporting according to various aspects disclosed herein. Figure 2 Arrangement Figure 1 The diagram 500 is described with reference to the BS 112 and the UE 102. Those skilled in the art will appreciate that the process of the diagram 500 may be applied to Figure 1 BS 114 and UE 104.

[0084] Signaling diagram 500 relates to a scenario in which a network side including a BS provides, through broadcast, a QoE measurement configuration related to a service received by a UE device in an idle / inactive state, and the UE records a QoE measurement report in a buffer and sends the QoE measurement report when the UE enters a connected state at a later time.

[0085] Figure 5Operations 501, 502, 503 and 504 can be performed with Figure 3 The operations 301, 302, 303 and 304 are the same or similar. Therefore, the above discussion in conjunction with 301, 302, 303 and 304 can be applied to 501, 502, 503 and 504, and the detailed discussion of 501, 502, 503 and 504 is omitted for simplicity.

[0086] In 505, the UE 102 may record the QoE measurement report in a buffer to delay sending, instead of being triggered to enter a connected state or SDT when the QoE measurement report is ready and then send the QoE measurement report.

[0087] When UE 102 is triggered to enter the connected state due to other reasons other than QoE measurement report, at a later time, UE 102 may establish an RRC connection with BS 112 via an RRC connection recovery / establishment procedure in 506 to enter the connected state.

[0088] In 507, UE 102 may send a QoE measurement report to BS 112 upon entering the connected state.

[0089] Although Figure 5 An embodiment is shown in which the UE 102 is triggered to enter the connected state due to other reasons, but those skilled in the art will appreciate that the UE 102 may be triggered to enter the SDT state to send the QoE measurement report due to other reasons.

[0090] Figure 6 is a flowchart illustrating a fourth exemplary method for QoE measurement and reporting according to various aspects disclosed herein. Figure 2 Arrangement Figure 1 600 is described for BS 112 and UE 102. Those skilled in the art will appreciate that the process of FIG. 500 can be applied to Figure 1 BS 114 and UE 104.

[0091] The signaling diagram 600 relates to a scenario in which a network side including a BS provides a QoE measurement configuration related to a service received by a UE device in an idle / inactive state via signaling dedicated to a UE device in a connected state.

[0092] In 601, when the UE device is in a connected state, the BS 112 sends a QoE measurement configuration related to the MBS service via signaling dedicated to the UE device. The configuration can be applied when the UE is in any RRC state.

[0093] The UE device may transition from the connected state to the idle / inactive state at a later time. During the idle / inactive state, the UE device may receive MBS services. In this case, the UE 102 may receive the MCCH message in 602 and receive the corresponding MBS service in 603.

[0094] In 604, UE 102 may perform QoE measurement for the MBS service according to the QoE measurement configuration previously received in the connected state.

[0095] Figure 6 Operations 602, 603 and 604 may be performed with Figure 3 The operations 302, 303 and 304 are the same or similar. Therefore, the above discussion in conjunction with 302, 303 and 304 can be applied to 602, 603 and 604, and the detailed discussion of 602, 603 and 604 is omitted for simplicity.

[0096] The QoE measurement reporting mechanism 605 after the QoE measurement 604 can be used with Figure 3 305 Figure 4 405 or Figure 5 In other words, UE 102 may immediately or based on some conditions trigger to enter the connected state to send the QoE measurement report, or immediately trigger the SDT process to send the QoE measurement report, or record the QoE report in a buffer and then send the QoE measurement report when entering the connected state or SDT state due to other reasons.

[0097] although Figure 6 An example is shown where the UE device performs QoE measurement at a certain point in time in an idle / inactive state, but it is possible for the UE device to perform QoE measurement in a connected state and continue to perform QoE measurement when the UE device transitions from the connected state to the idle / inactive state.

[0098] although Figure 6 An example is shown in which the UE device 102 receives the QoE measurement configuration via dedicated signaling when the UE device is in a connected state in 601 , but the UE device 102 may receive the QoE measurement configuration via dedicated signaling in an SDT period in an inactive state in 601 .

[0099] Figure 7 and Figure 8 An embodiment of QoE measurement reporting in a connected state according to various aspects disclosed herein is shown. The QoE measurement reporting can be reported separately from or together with a minimization of drive test (MDT) report.

[0100] MDT is a mechanism designed to enable operators to collect mobile network data using UE devices in the network. One of the MDT functions is logged MDT, where the MDT occurs when the UE is in an idle state and the MDT measurements are logged and reported at a later time.

[0101] Figure 7 is a flow chart illustrating a method of reporting QoE measurements separately from logged MDT reports.

[0102] When the UE device 102 requests to enter the connected state in 305, 505 or 605, in 701, the UE 102 may establish an RRC connection with the BS 112 to enter the connected state.

[0103] In 702, UE 102 may send a QoE measurement report validity indication to BS 112 via a first RRC message (eg, an RRCSetupComplete message or an RRCResumeComplete message).

[0104] In 703 , BS 112 sends a second RRC message (eg, UEInformationRequest) to UE 102 for requesting a QoE measurement report.

[0105] In 704, UE 102 may send a QoE measurement report to BS 112 via a third RRC message (eg, UEInformationRequest).

[0106] In 705 , UE 102 may initiate a separate MDT reporting procedure to report MDT to BS 112 .

[0107] Figure 8 is a flow chart illustrating a method of reporting QoE measurements along with logged MDT reports.

[0108] When the UE device 102 requests to enter the connected state in 305, 505 or 605, in 801, the UE 102 may establish an RRC connection with the BS 112 to enter the connected state.

[0109] In 802 , UE 102 may send a QoE and MDT measurement report validity indication to BS 112 via a first RRC message (eg, an RRCSetupComplete message or an RRCResumeComplete message).

[0110] In 803 , BS 112 sends a second RRC message, for example, UEInformationRequest, to UE 102 for requesting QoE and MDT measurement reports.

[0111] In 804 , UE 102 may send QoE and MDT measurement reports to BS 112 via a third RRC message (eg, UEInformationRequest).

[0112] Fig. 9 1 is a flow chart illustrating an exemplary method 900 for QoE measurement and reporting according to various aspects disclosed herein. The method 900 involves operations performed at the UE device 102 side.

[0113] In 901 , the UE device 102 receives, from the BS 112 , a QoE measurement configuration for a service to be received by the UE device in an idle or inactive state.

[0114] In one aspect, the service is an MBS service and the QoE measurement configuration may be received via broadcast via one of: 1) provided in a SIB related to the MBS; 2) provided together with an MBS session configuration related to the MBS; or 3) provided in a SIB dedicated to QoE measurement configuration related to the MBS.

[0115] On the other hand, when the UE device is in a connected state or in a small data transmission (SDT) period in an inactive state, the QoE measurement configuration can be received via signaling dedicated to the UE device, and the QoE measurement configuration is applicable to the UE device when the UE device is in a connected state, an idle state, or an inactive state.

[0116] The QoE measurement configuration may indicate a specific MBS service, for example, by specifying an MBS Protocol Data Unit (PDU) Session ID or a Temporary Mobile Group Identity (TMGI).

[0117] Additionally or alternatively, the QoE measurement configuration may indicate a list of one or more public land mobile networks (PLMNs) or a list of one or more frequencies for which the UE device performs QoE measurements for the MBS.

[0118] In 902, the UE device 102 performs QoE measurement for a service received by the UE device in an idle or inactive state according to a QoE measurement configuration.

[0119] In one aspect, the UE device 102 may perform QoE measurements when a service is activated for transmission.

[0120] Additionally or alternatively, the UE device 102 may perform QoE measurements upon determining that the UE device supports and is interested in the service and has the capability to perform QoE measurements in an idle or inactive state.

[0121] In addition or alternatively, the UE device 102 may perform QoE measurements when the service satisfies at least one of the following conditions: 1) the service is provided on the cell where the UE device is residing; 2) the service belongs to the same operator as the cell where the UE device is residing; 3) the service belongs to a list of one or more public land mobile networks (PLMNs), equivalent PLMNs (EPLMNs), or visited PLMNs (VPLMNs) that the UE device has; or 4) the service belongs to a list of one or more operators or PLMNs indicated in the QoE measurement configuration.

[0122] On the other hand, if a QoE measurement configuration can be received via signaling dedicated to the UE device when the UE device is in a connected state or in a small data transmission (SDT) period in an inactive state, the UE device can continue to perform QoE measurements when the UE device transitions from a connected state to an idle or inactive state.

[0123] The UE device 102 may stop QoE measurement upon determining that at least one of the following conditions is met: 1) a buffer for recording QoE measurement reports overflows, or 2) a period for performing QoE measurement exceeds a threshold.

[0124] In 903, the UE device 102 generates a QoE measurement report based on the QoE measurement.

[0125] In one aspect, the UE device 102 may log QoE measurements for services belonging to the same operator.

[0126] Additionally or alternatively, the UE device 102 may record the location information and timestamp associated with the QoE measurement. The network side may use the location information and timestamp to associate the QoE report with the recorded MDT, and obtain MBS service-related radio quality information based on the association to achieve further optimization.

[0127] In 904 , the UE device 102 sends a QoE measurement report to the BS 112 .

[0128] According to the first aspect, the UE device 102 in idle or inactive state can be triggered to enter a connected state when a QoE measurement report is ready, establish an RRC connection with the BS to enter the connected state, and send a QoE measurement report to the BS when the UE device enters the connected state.

[0129] According to a second aspect, a UE device 102 in an idle or inactive state may record one or more QoE measurement reports in a buffer when the QoE measurement reports are ready, determine whether at least one of some conditions is met, trigger to enter a connected state when determining that at least one condition is met, establish an RRC connection with the BS to enter the connected state, and send the one or more QoE measurement reports to the BS when the UE device enters the connected state. The conditions may include that the amount of QoE measurement reports exceeds a threshold, or the buffer overflows or the used size of the buffer exceeds a threshold, etc.

[0130] According to a third aspect, the UE device 102 in the inactive state may trigger a small data transmission (SDT) procedure when a QoE measurement report is ready, and transmit the QoE measurement report to the BS in the inactive state via the SDT procedure.

[0131] According to a fourth aspect, a UE device 102 in an idle or inactive state may record a QoE measurement report in a buffer when the QoE measurement report is ready, and send the QoE measurement report to the BS when the UE device subsequently enters a connected state or a small data transmission (SDT) state.

[0132] For the QoE measurement report in the connected state, the QoE measurement report can be reported separately from or together with the minimization of drive test (MDT) report. In the former scenario, the UE device 102 can send a QoE measurement report validity indication to the BS via a first RRC message when entering the connected state, receive a second RRC message for requesting the QoE measurement report from the BS, and send the QoE measurement report to the BS via a third RRC message. In the latter scenario, the UE device 102 can include the minimization of drive test (MDT) report validity indication together with the QoE measurement report validity indication in the first RRC message, the BS 112 can request the MDT measurement report together with the QoE measurement report in the second RRC message, and the UE device 102 can carry the MDT measurement report together with the QoE measurement report in the third RRC message.

[0133] Fig.10 is a flow chart illustrating an exemplary method 1000 for QoE measurement and reporting according to various aspects disclosed herein. The method 1000 involves operations performed at the BS 112 side.

[0134] In 1001 , the BS 112 sends to a UE device a QoE measurement configuration for a service to be received by the UE device in an idle or inactive state.

[0135] In one aspect, the service is an MBS service and the QoE measurement configuration may be provided by broadcast via one of: 1) provided in a SIB related to the MBS; 2) provided together with an MBS session configuration related to the MBS; or 3) provided in a SIB dedicated to QoE measurement configuration related to the MBS.

[0136] On the other hand, when the UE device is in a connected state or in a small data transmission (SDT) period in an inactive state, the QoE measurement configuration may be provided via signaling dedicated to the UE device, and the QoE measurement configuration is applicable to the UE device when the UE device is in a connected state, an idle state, or an inactive state.

[0137] The QoE measurement configuration may indicate a specific MBS service, for example, by specifying an MBS Protocol Data Unit (PDU) Session ID or a Temporary Mobile Group Identity (TMGI).

[0138] Additionally or alternatively, the QoE measurement configuration may indicate a list of one or more public land mobile networks (PLMNs) or a list of one or more frequencies for which the UE device performs QoE measurements for the MBS.

[0139] In 1001 , BS 112 receives a QoE measurement report for the service from a UE device.

[0140] According to one aspect, BS112 may receive a QoE measurement report from UE 102 in a connected state via RRC signaling. The QoE measurement report may be reported separately from or together with a minimization of drive test (MDT) report. In the former scenario, BS112 may receive a QoE measurement report validity indication from a UE device via a first RRC message, send a second RRC message for requesting a QoE measurement report to the UE device, and receive a QoE measurement report from the UE device via a third RRC message. In the latter scenario, UE device 102 may include a minimization of drive test (MDT) report validity indication together with the QoE measurement report validity indication in the first RRC message, BS112 may request an MDT measurement report together with the QoE measurement report in the second RRC message, and UE device 102 may carry the MDT measurement report together with the QoE measurement report in the third RRC message.

[0141] According to another aspect, BS 112 may receive QoE measurement reports via a small data transmission (SDT) procedure upon request by a UE device.

[0142] Embodiments contemplated herein include an apparatus including means for performing one or more elements of one or more methods discussed above. The apparatus may be, for example, an apparatus of a UE (such as wireless device 202 as a UE, as described herein).

[0143] The embodiments contemplated herein include one or more non-transitory computer-readable media, which include instructions that, when one or more processors of an electronic device execute the instructions, cause the electronic device to perform one or more elements of one or more methods as described above. The non-transitory computer-readable medium can be, for example, a memory of a UE (such as the memory 206 of the wireless device 202 as a UE, as described herein).

[0144] The embodiments contemplated herein include an apparatus including a logical component, module, or circuit system for performing one or more elements of one or more methods as above. The apparatus may be, for example, an apparatus of a UE (such as a wireless device 202 as a UE, as described herein).

[0145] Embodiments contemplated herein include an apparatus comprising: one or more processors and one or more computer-readable media, the computer-readable media comprising instructions that, when executed by the one or more processors, cause the one or more processors to perform one or more elements of one or more methods as described above. The apparatus may be, for example, an apparatus of a UE (such as a wireless device 202 as a UE, as described herein).

[0146] Embodiments contemplated herein include a signal as described in or associated with one or more elements of one or more methods as above.

[0147] The embodiments contemplated herein include a computer program or computer program product including instructions, wherein execution of the program by a processor causes the processor to perform one or more elements of one or more methods as above. The processor may be a processor of a UE (such as the processor 204 of the wireless device 202 as a UE, as described herein). These instructions may be located, for example, in a processor and / or on a memory of a UE (such as the memory 206 of the wireless device 202 as a UE, as described herein).

[0148] Embodiments contemplated herein include an apparatus including means for performing one or more elements of one or more methods as described above. The apparatus may be, for example, an apparatus of a base station (such as network device 218 as a base station, as described herein).

[0149] The embodiments contemplated herein include one or more non-transitory computer-readable media, which include instructions that, when one or more processors of an electronic device execute the instructions, cause the electronic device to perform one or more elements of one or more methods as above. The non-transitory computer-readable medium can be, for example, a memory of a base station (such as the memory 222 of the network device 218 as a base station, as described herein).

[0150] The embodiments contemplated herein include an apparatus including a logical component, module, or circuit system for performing one or more elements of one or more methods as above. The apparatus may be, for example, an apparatus of a base station (such as a network device 218 as a base station, as described herein).

[0151] Embodiments contemplated herein include an apparatus comprising: one or more processors and one or more computer-readable media, the computer-readable media comprising instructions that, when executed by the one or more processors, cause the one or more processors to perform one or more elements of one or more methods as described above. The apparatus may be, for example, an apparatus of a base station (such as network device 218 as a base station, as described herein).

[0152] Embodiments contemplated herein include a signal as described in or associated with one or more elements of one or more methods as above.

[0153] The embodiments contemplated herein include a computer program or computer program product including instructions, wherein execution of the program by a processing element causes the processing element to perform one or more elements of one or more methods as above. The processor may be a processor of a base station (such as processor 220 of network device 218 as a base station, as described herein). These instructions may be located, for example, in a processor and / or in a memory of a UE (such as memory 222 of network device 218 as a base station, as described herein).

[0154] For one or more embodiments, at least one of the components set forth in one or more of the foregoing figures may be configured to perform one or more operations, techniques, processes, and / or methods as described herein. For example, a baseband processor as described herein in conjunction with one or more of the foregoing figures may be configured to operate according to one or more of the examples set forth herein. For another example, circuits associated with a UE, a base station, a network element, etc., as described above in conjunction with one or more of the foregoing figures may be configured to operate according to one or more of the examples set forth herein.

[0155] Unless otherwise expressly stated, any of the above embodiments may be combined with any other embodiment (or combination of embodiments). The foregoing description of one or more specific implementations provides illustration and description, but is not intended to be exhaustive or to limit the scope of the embodiments to the precise form disclosed. In view of the above teachings, modifications and variations are possible or can be obtained from the practice of various embodiments.

[0156] Embodiments and implementations of the systems and methods described herein may include various operations that may be embodied in machine executable instructions to be executed by a computer system. A computer system may include one or more general or special purpose computers (or other electronic devices). A computer system may include hardware components that include specific logic components for performing operations; or may include a combination of hardware, software, and / or firmware.

[0157] It should be appreciated that the systems described herein include descriptions of specific embodiments. These embodiments may be combined into a single system, partially combined into other systems, separated into multiple systems, or otherwise divided or combined. In addition, it is contemplated that parameters, attributes, aspects, etc. of another embodiment may be used in one embodiment. For clarity, these parameters, attributes, aspects, etc. are described only in one or more embodiments, and it should be appreciated that these parameters, attributes, aspects, etc. may be combined with or substituted for parameters, attributes, aspects, etc. of another embodiment unless expressly stated herein.

[0158] It is understood that the use of personally identifiable information should be subject to privacy policies and practices that are generally recognized to meet or exceed industry or government requirements for maintaining user privacy. Specifically, personally identifiable information data should be managed and processed to minimize the risk of unintentional or unauthorized access or use, and the nature of the authorized use should be clearly stated to users.

[0159] Although the foregoing has been described in considerable detail for the sake of clarity, it will be apparent that certain changes and modifications may be made without departing from the principles of the invention. It should be noted that there are many alternative ways to implement both the processes and the apparatus described herein. Therefore, the embodiments of the present invention should be regarded as illustrative rather than restrictive, and the specification is not limited to the details given herein, but may be modified within the scope and equivalents of the appended claims.

Claims

1. A user equipment (UE) device, comprising: at least one antenna; at least one radio coupled to the at least one antenna and configured to perform wireless communications using at least one radio access technology; and one or more processors, the one or more processors being coupled to the at least one radio component, wherein the one or more processors are configured to cause the UE device to: receiving, from a base station (BS), a user quality of experience (QoE) measurement configuration for a service to be received by the UE device in an idle or inactive state; Performing QoE measurement on the service received by the UE device in an idle or inactive state according to the QoE measurement configuration; generating a QoE measurement report based on the QoE measurement; as well as The QoE measurement report is sent to the BS.

2. The UE device of claim 1 , wherein the service is a multicast and broadcast service (MBS), and the QoE measurement configuration is received by broadcast via one of: provided in a system information block (SIB) associated with the MBS; together with an MBS session configuration associated with said MBS; or The QoE measurement configuration associated with the MBS is provided in a SIB dedicated to the QoE measurement configuration.

3. The UE device according to claim 1, wherein when the UE device is in a connected state or in a small data transmission (SDT) period in an inactive state, the QoE measurement configuration is received via signaling dedicated to the UE device, and when the UE device is in a connected state, an idle state or an inactive state, the QoE measurement configuration is applicable to the UE device.

4. The UE device according to claim 3, wherein the one or more processors are further configured to: when the UE device transitions from the connected state to the idle or inactive state, enable the UE device to continue to perform the QoE measurement.

5. The UE device of claim 1, wherein the service is a Multicast and Broadcast Service (MBS), and the QoE measurement configuration indicates a specific MBS service.

6. The UE device of claim 1, wherein the service is a multicast and broadcast service (MBS), and the QoE measurement configuration indicates a list of one or more public land mobile networks (PLMNs) or a list of one or more frequencies for which the UE device performs the QoE measurement for the MBS.

7. The UE device according to claim 1, wherein performing the QoE measurement comprises: The QoE measurement is performed when the service is activated for transmission.

8. The UE device according to claim 7, wherein performing the QoE measurement further comprises: The QoE measurement is performed upon determining that the UE device supports the service and is interested in the service and has the capability to perform the QoE measurement in the idle or inactive state.

9. The UE device according to claim 8, wherein performing the QoE measurement further comprises performing the QoE measurement when the service satisfies at least one of the following conditions: The service is provided on the cell where the UE device is camping; The service belongs to the same operator as the cell where the UE device is currently camping; The service belongs to a list of one or more public land mobile networks (PLMNs), equivalent PLMNs (EPLMNs), or visited PLMNs (VPLMNs) that the UE device has; or The service belongs to a list of one or more operators or PLMNs indicated in the QoE measurement configuration.

10. The UE device of claim 1, wherein generating the QoE measurement report comprises recording the QoE measurements for the services belonging to the same operator.

11. The UE device of claim 1, wherein generating the QoE measurement report comprises recording location information and a timestamp associated with the QoE measurement.

12. The UE device according to claim 1, wherein sending the QoE measurement report comprises: When the QoE measurement report is ready, the UE device in the idle or inactive state is triggered to enter a connected state; Establishing an RRC connection with the BS to enter a connected state; as well as When the UE device enters the connected state, the UE device sends the QoE measurement report to the BS.

13. The UE device according to claim 1, wherein sending the QoE measurement report comprises: When the QoE measurement report is ready, the UE device in the idle or inactive state records one or more QoE measurement reports in a buffer; Determine whether at least one of the following conditions is met: The amount of the QoE measurement report exceeds a threshold, or The buffer overflows or the used size of the buffer exceeds a threshold; When it is determined that the at least one condition is met, the UE device in the idle or inactive state is triggered to enter a connected state; Establishing an RRC connection with the BS to enter a connected state; as well as When the UE device enters the connected state, the UE device sends the one or more QoE measurement reports to the BS.

14. The UE device according to claim 1, wherein sending the QoE measurement report comprises: When the QoE measurement report is ready, triggering a small data transmission (SDT) process by the UE device in the inactive state; as well as The UE device in the inactive state sends the QoE measurement report to the BS via the SDT process.

15. The UE device according to claim 1, wherein sending the QoE measurement report comprises: When the QoE measurement report is ready, the UE device in the idle or inactive state records the QoE measurement report in a buffer; as well as When the UE device subsequently enters a connected state or a small data transmission (SDT) state, the QoE measurement report is sent to the BS.

16. The UE device according to any one of claims 12, 13 and 15, wherein when the UE device enters the connected state, the UE device sending the QoE measurement report to the BS comprises: When entering the connected state, sending a QoE measurement report validity indication to the BS via a first RRC message; receiving, from the BS, a second RRC message for requesting the QoE measurement report; and The QoE measurement report is sent to the BS via a third RRC message.

17. The UE device according to claim 16, wherein: The first RRC message further includes a Minimization of Drive Test (MDT) report validity indication, the second RRC message further requests an MDT measurement report together with the QoE measurement report, and The third RRC message carries the MDT measurement report together with the QoE measurement report.

18. The UE device according to claim 1, wherein the one or more processors are further configured to cause the UE device to stop the QoE measurement when it is determined that at least one of the following conditions is met: The buffer for recording the QoE measurement reports overflows, or A period for performing the QoE measurement exceeds a threshold.

19. A base station (BS), comprising: at least one antenna; at least one radio coupled to the at least one antenna and configured to perform wireless communications using at least one radio access technology; and one or more processors coupled to the at least one radio component, wherein the one or more processors are configured to cause the BS to: sending to a user equipment (UE) device a user quality of experience (QoE) measurement configuration for a service to be received by the UE device in an idle or inactive state; and A QoE measurement report for the service is received from the UE device.

20. The BS of claim 19, wherein the service is a multicast and broadcast service (MBS), and wherein the one or more processors are configured to cause the BS to send the QoE measurement configuration by broadcast via one of: providing the QoE measurement configuration in a system information block (SIB) associated with the MBS; providing the QoE measurement configuration together with an MBS session configuration associated with the MBS; or The QoE measurement configuration is provided in a SIB dedicated to the QoE measurement configuration related to the MBS.

21. The BS of claim 19, wherein the one or more processors are configured to cause the BS to transmit the QoE measurement configuration via signaling dedicated to the UE device.

22. The BS of claim 19, wherein the service is a Multicast and Broadcast Service (MBS), and the QoE measurement configuration indicates a specific MBS service.

23. The BS of claim 19, wherein the service is a multicast and broadcast service (MBS), and the QoE measurement configuration indicates a list of one or more public land mobile networks (PLMNs) or a list of one or more frequencies for which the UE device performs the QoE measurement for the service.

24. The BS of claim 19, wherein receiving the QoE measurement report comprises: When requested by the UE device, establish an RRC connection with the UE device; Receiving a QoE measurement report validity indication from the UE device via a first RRC message; Sending a second RRC message for requesting the QoE measurement report to the UE device; as well as The QoE measurement report is received from the UE device via a third RRC message.

25. The BS of claim 24, wherein: The first RRC message further includes a Minimization of Drive Test (MDT) report validity indication, the second RRC message further requests an MDT measurement report together with the QoE measurement report, and The third RRC message carries the MDT measurement report together with the QoE measurement report.

26. The BS of claim 19, wherein receiving the QoE measurement report comprises: The QoE measurement report is received via a small data transmission (SDT) procedure upon request by the UE device.

27. A non-transitory computer-readable memory medium storing program instructions executable by one or more processors to cause a user equipment (UE) device to: receiving, from a base station (BS), a user quality of experience (QoE) measurement configuration for a service to be received by the UE device in an idle or inactive state; Performing QoE measurement on the service received by the UE device in an idle or inactive state according to the QoE measurement configuration; generating a QoE measurement report based on the QoE measurement; as well as The QoE measurement report is sent to the BS.

28. A non-transitory computer-readable storage medium storing program instructions executable by one or more processors to cause a base station (BS): sending to a user equipment (UE) device a user quality of experience (QoE) measurement configuration for a service to be received by the UE device in an idle or inactive state; and A QoE measurement report for the service is received from the UE device.

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