Qoe measurement reporting for network slice replacement
By updating QoE measurement reports to include network slice replacement information, the solution addresses inconsistencies in QoE reporting, ensuring accurate and consistent data collection during network slice changes, enhancing communication performance.
Patent Information
- Application Number
- PCT/CN2024/106848
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2026-01-29
AI Technical Summary
Inconsistent QoE measurement reporting occurs during network slice replacement, leading to inaccurate performance evaluation due to the UE's unawareness of slice changes, especially when the UE has never established a PDU session with the replaced slice.
The terminal device updates the QoE measurement report message to include information about network slice replacement, ensuring accurate reporting by providing mappings or flags indicating the original and alternative slices, thereby aligning the UE Application layer with network changes.
This solution ensures smooth and accurate QoE measurement reporting, improving communication performance by maintaining consistency in QoE data collection during network slice replacement scenarios.
Smart Images

Figure CN2024106848_29012026_PF_FP_ABST
Abstract
Description
QOE MEASUREMENT REPORTING FOR NETWORK SLICE REPLACEMENTFIELD
[0001] Various example embodiments relate to the field of communication and in particular, to methods, devices, apparatuses and a computer readable storage medium for a quality of experience, QoE, measurement reporting.BACKGROUND
[0002] A communication network can be seen as a facility that enables communications between two or more communication devices, or provides communication devices access to a data network. A mobile or wireless communication network is one example of a communication network.
[0003] Such communication networks operate in accordance with standards, such as those promulgated by 3GPP (Third Generation Partnership Project) or ETSI (European Telecommunications Standards Institute) . Examples of such standards include the so-called 5G (5th Generation) standard or other standards promulgated by 3GPP.SUMMARY
[0004] In general, example embodiments of the present disclosure provide a solution for QoE measurement reporting, especially during network slice replacement. With this solution, the inconsistency issues of QoE measurement reporting are solved and the preservation of smooth and accurate QoE measurement reporting is provided, thereby improving the performance of communication with QoE measurement.
[0005] In a first aspect, there is provided a terminal device. The terminal device comprises at least one processor and at least one memory storing instructions. The instructions, when executed by the at least one processor, cause the terminal device at least to receive, from a network device, first information related to a network slice replacement indicating that a first network slice has been replaced with a second network slice. The terminal device is further caused to update, a quality of experience, QoE, measurement report message, based on the first information for the network slice replacement. The terminal device is further caused to transmit, to the network device, the updated QoE measurement report message including at least second information indicating occurrence of the network slice replacement.
[0006] In a second aspect, there is provided a network device. The network device comprises at least one processor and at least one memory storing instructions. The instructions, when executed by the at least one processor, cause the network device at least to transmit to a terminal device, an indication that a first network slice has been replaced with a second network slice for a network slice replacement. The network device is further caused to receive from the terminal device, an updated QoE, measurement report message including at least information indicating occurrence of the network slice replacement.
[0007] In a third aspect, there is provided a method implemented at a terminal device. The method comprises receiving, from a network device, first information related to a network slice replacement indicating that a first network slice has been replaced with a second network slice. The method further comprises updating, a quality of experience, QoE, measurement report message, based on the first information for the network slice replacement. The method further comprises transmitting, to the network device, the updated QoE measurement report message including at least second information indicating occurrence of the network slice replacement.
[0008] In a fourth aspect, there is provided a method implemented at a network device. The method comprises transmitting to a terminal device, an indication that a first network slice has been replaced with a second network slice for a network slice replacement. The method further comprises receiving from the terminal device, an updated QoE, measurement report message including at least information indicating occurrence of the network slice replacement.
[0009] In a fifth aspect, there is provided an apparatus. The apparatus comprises means for receiving, from a network device, first information related to a network slice replacement indicating that a first network slice has been replaced with a second network slice. The apparatus further comprises means for updating, a quality of experience, QoE, measurement report message, based on the first information for the network slice replacement. The apparatus further comprises means for means for transmitting, to the network device, the updated QoE measurement report message including at least second information indicating occurrence of the network slice replacement.
[0010] In a sixth aspect, there is provided an apparatus. The apparatus comprises means for transmitting to a terminal device, an indication that a first network slice has been replaced with a second network slice for a network slice replacement. The apparatus further comprises means for receiving from the terminal device, an updated QoE, measurement report message including at least information indicating occurrence of the network slice replacement.
[0011] In a seventh aspect, there is provided a non-transitory computer readable medium comprising program instructions for causing an apparatus to perform at least the method according to any one of the above third and fourth aspects.
[0012] In an eighth aspect, there is provided a computer program comprising instructions, which, when executed by an apparatus, cause the apparatus to perform at least the method according to any one of the above third and fourth aspects.
[0013] In a ninth aspect, there is provided a terminal device. The terminal device comprises receiving circuitry configured to receive, from a network device, first information related to a network slice replacement indicating that a first network slice has been replaced with a second network slice. The terminal device further comprises updating circuitry configured to update, a quality of experience, QoE, measurement report message, based on the first information for the network slice replacement. The terminal device further comprises transmitting circuitry configured to transmit, to the network device, the updated QoE measurement report message including at least second information indicating occurrence of the network slice replacement.
[0014] In a tenth aspect, there is provided a network device. The network device comprises transmitting circuitry configured to transmit to a terminal device, an indication that a first network slice has been replaced with a second network slice for a network slice replacement. The network device further comprises receiving receive from the terminal device, an updated QoE, measurement report message including at least information indicating occurrence of the network slice replacement.
[0015] It is to be understood that the summary section is not intended to identify key or essential features of embodiments of the present disclosure, nor is it intended to be used to limit the scope of the present disclosure. Other features of the present disclosure will become easily comprehensible through the following description.BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Some example embodiments will now be described with reference to the accompanying drawings, in which:
[0017] FIG. 1A illustrates an example communication network in which embodiments of the present disclosure may be implemented;
[0018] FIG. 1B illustrates an example of problem for QoE measurement reporting;
[0019] FIG. 1C illustrates an example of a format of S-NSSAI;
[0020] FIG. 2 illustrates a flowchart illustrating an example of process for QoE reporting according to some embodiments of the present disclosure;
[0021] FIG. 3A illustrates a flowchart illustrating another example of process for QoE reporting according to some embodiments of the present disclosure;
[0022] FIG. 3B illustrates a flowchart illustrating another example of process for QoE reporting according to some embodiments of the present disclosure;
[0023] FIG. 4A illustrates a flowchart illustrating another example of process for QoE reporting according to some embodiments of the present disclosure;
[0024] FIG. 4B illustrates a flowchart illustrating another example of process for QoE reporting according to some embodiments of the present disclosure;
[0025] FIG. 5 illustrates a flowchart illustrating another example of process for QoE reporting according to some embodiments of the present disclosure;
[0026] FIG. 6 illustrates a flowchart of a method implemented at a terminal device according to some other embodiments of the present disclosure;
[0027] FIG. 7 illustrates a flowchart of a method implemented at a network device according to some other embodiments of the present disclosure
[0028] FIG. 8 illustrates a simplified block diagram of an apparatus that is suitable for implementing embodiments of the present disclosure; and
[0029] FIG. 9 illustrates a block diagram of an example computer readable medium in accordance with some embodiments of the present disclosure.
[0030] Throughout the drawings, the same or similar reference numerals represent the same or similar element.DETAILED DESCRIPTION
[0031] Principles of the present disclosure will now be described with reference to some example embodiments. It is to be understood that these embodiments are described only for the purpose of illustration and help those skilled in the art to understand and implement the present disclosure, without suggesting any limitation as to the scope of the disclosure. The disclosure described herein can be implemented in various manners other than the ones described below.
[0032] In the following description and claims, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skilled in the art to which this disclosure belongs.
[0033] References in the present disclosure to “one embodiment, ” “an embodiment, ” “an example embodiment, ” and the like indicate that the embodiment described may include a particular feature, structure, or characteristic, but it is not necessary that every embodiment includes the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to affect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
[0034] It shall be understood that although the terms “first” and “second” etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and similarly, a second element could be termed a first element, without departing from the scope of example embodiments. As used herein, the term “and / or” includes any and all combinations of one or more of the listed terms.
[0035] The terminology used herein is for describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms “a” , “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises” , “comprising” , “has” , “having” , “includes” and / or “including” , when used herein, specify the presence of stated features, elements, and / or components etc., but do not preclude the presence or addition of one or more other features, elements, components and / or combinations thereof. As used herein, “at least one of the following: <a list of two or more elements>” and “at least one of <a list of two or more elements>” and similar wording, where the list of two or more elements are joined by “and” or “or” , mean at least any one of the elements, or at least any two or more of the elements, or at least all the elements.
[0036] As used in this application, the term “circuitry” may refer to one or more or all of the following:
[0037] (a) hardware-only circuit implementations (such as implementations in only analog and / or digital circuitry) and
[0038] (b) combinations of hardware circuits and software, such as (as applicable) :
[0039] (i) a combination of analog and / or digital hardware circuit (s) with software / firmware and
[0040] (ii) any portions of hardware processor (s) with software (including digital signal processor (s) ) , software, and memory (ies) that work together to cause an apparatus, such as a mobile phone or server, to perform various functions) and
[0041] (c) hardware circuit (s) and or processor (s) , such as a microprocessor (s) or a portion of a microprocessor (s) , that requires software (e.g., firmware) for operation, but the software may not be present when it is not needed for operation.
[0042] This definition of circuitry applies to all uses of this term in this application, including in any claims. As a further example, as used in this application, the term circuitry also covers an implementation of merely a hardware circuit or processor (or multiple processors) or portion of a hardware circuit or processor and its (or their) accompanying software and / or firmware. The term circuitry also covers, for example and if applicable to the particular claim element, a baseband integrated circuit or processor integrated circuit for a mobile device or a similar integrated circuit in server, a cellular network device, or other computing or network device.
[0043] As used herein, the term “communication network” refers to a network following any suitable communication standards, such as Long Term Evolution (LTE) , LTE-Advanced (LTE-A) , Wideband Code Division Multiple Access (WCDMA) , High-Speed Packet Access (HSPA) , Narrow Band Internet of Things (NB-IoT) and so on. Furthermore, the communications between a terminal device and a network device in the communication network may be performed according to any suitable generation communication protocols, including, but not limited to, the first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , the fourth generation (4G) , 4.5G, the future fifth generation (5G) and the sixth generation (6G) communication protocols, and / or any other protocols either currently known or to be developed in the future. Embodiments of the present disclosure may be applied in various communication systems. Given the rapid development in communications, there will of course also be future type communication technologies and systems with which the present disclosure may be embodied. It should not be seen as limiting the scope of the present disclosure to only the aforementioned system.
[0044] As used herein, the term “network device” and “access network device” refer to a node in a communication network via which a terminal device accesses the network and receives services therefrom. The network device may refer to a base station (BS) or an access point (AP) , for example, a node B (NodeB or NB) , an evolved NodeB (eNodeB or eNB) , a NR NB (also referred to as a gNB) , a transmission reception point (TRP) , a Remote Radio Unit (RRU) , a radio header (RH) , a remote radio head (RRH) , a relay, a low power node such as a femto, a pico, and so forth, depending on the applied terminology and technology. In addition, the term “network device” also refers to other entities of network side, such as, the access and mobility function, AMF, the orchestration and management entity, OAM, the measurement collection entity, MCE / trace collection entity, TCE.
[0045] The term “terminal device” refers to any end device that may be capable of wireless communication. By way of example rather than limitation, a terminal device may also be referred to as a communication device, user equipment (UE) , a Subscriber Station (SS) , a Portable Subscriber Station, a Mobile Station (MS) , or an Access Terminal (AT) . The terminal device may include, but not limited to, a mobile phone, a cellular phone, a smart phone, voice over IP (VoIP) phones, wireless local loop phones, a tablet, a wearable terminal device, a personal digital assistant (PDA) , portable computers, desktop computer, image capture terminal devices such as digital cameras, gaming terminal devices, music storage and playback appliances, vehicle-mounted wireless terminal devices, wireless endpoints, mobile stations, laptop-embedded equipment (LEE) , laptop-mounted equipment (LME) , USB dongles, smart devices, wireless customer-premises equipment (CPE) , an Internet of Things (IoT) device, a watch or other wearable, a head-mounted display (HMD) , a vehicle, a drone, a medical device and applications (e.g., remote surgery) , an industrial device and applications (e.g., a robot and / or other wireless devices operating in an industrial and / or an automated processing chain contexts) , a consumer electronics device, a device operating on commercial and / or industrial wireless networks, and the like. In the following description, the terms “terminal device” , “communication device” , “terminal” , “user equipment” and “UE” may be used interchangeably.
[0046] FIG. 1A illustrates a schematic diagram of an example communication network 100 in which some embodiments of the present disclosure can be implemented. As shown in FIG. 1A, the communication network 100 may include a terminal device 110, a network device 120. The network device 120 may comprise a Radio Access Network (RAN) node 120-1, an Access and Mobility Function (AMF) 120-2, an Orchestration and Management (OAM) 120-3, and a Measurement Collection / Trace Collection Entity (MCE / TCE) 120-4.
[0047] It is to be understood that the number of network devices and terminal devices is only for the purpose of illustration without suggesting any limitations. The communication network 100 may include any suitable number of network devices and terminal devices adapted for implementing embodiments of the present disclosure.
[0048] Communications in the communication network and system 100 may be implemented according to any proper communication protocol (s) , comprising, but not limited to, cellular communication protocols of the first generation (1G) , the second generation (2G) , the third generation (3G) , the fourth generation (4G) , the fifth generation (5G) and the sixth generation (6G) and on the like, wireless local network communication protocols such as Institute for Electrical and Electronics Engineers (IEEE) 802.11 and the like, and / or any other protocols currently known or to be developed in the future. Moreover, the communication may utilize any proper wireless communication technology, comprising but not limited to: Code Division Multiple Access (CDMA) , Frequency Division Multiple Access (FDMA) , Time Division Multiple Access (TDMA) , Frequency Division Duplex (FDD) , Time Division Duplex (TDD) , Multiple-Input Multiple-Output (MIMO) , Orthogonal Frequency Division Multiple (OFDM) , Discrete Fourier Transform spread OFDM (DFT-s-OFDM) and / or any other technologies currently known or to be developed in the future.
[0049] Network slicing is a key 5G feature to support different services using the same underlying mobile network infrastructure. Network slices can differ either in their service requirements like Ultra-Reliable Low Latency Communication (URLLC) and enhanced Mobile Broadband (eMBB) or the tenant that provides those services. A network slice is uniquely identified via the single-network slice selection assistance information, S-NSSAI. Current 3GPP specifications allow a UE to be simultaneously connected and served by at most eight slices corresponding to eight network slices meaning eight S-NSSAIs. On the other hand, each cell may support tens or even hundreds of slices.
[0050] The format for the ID of network slice can be any identity for network slice. FIG. 1C illustrates an example of a format of S-NSSAI served as identification for a network slice. As shown in FIG. 1C, the S-NSSAI may include both a slice service type (SST) field and a slice differentiator (SD) field with a total length of 32 bits or include only SST field part in which case the length of S-NSSAI is 8 bits.
[0051] In 3GPP Release 18, the study on the concept of network slice replacement is included. The main trigger for network slice replacement is the service continuity in case a slice either goes into maintenance or has congestion in the core network side. The Network Slice Replacement feature is used to replace an S-NSSAI for the UE with an Alternative S-NSSAI when an S-NSSAI becomes unavailable or congested. For a supporting UE in CM-CONNECTED state and if there is a PDU Session (s) in the UE context associated with the S-NSSAI that needs to be replaced, the AMF additionally provides the Alternative S-NSSAI for this S-NSSAI in the Allowed NSSAI and in the Configured NSSAI, if not included yet, and the mapping between S-NSSAI (s) to Alternative S-NSSAI (s) to the UE in UE Configuration Update message, which can be called replacement information as detailed in 3GPP TS 23.501. For the supporting UE when the UE has a non-Access Stratum (NAS) signaling connection, i.e. it is CM-CONNECTED or it has become CM-CONNECTED, e.g. through a Service Request procedure or through a UE registration procedure, if the AMF determines that the S-NSSAI is to be replaced for the UE and there is a PDU Session (s) associated with the S-NSSAI in the UE context, the AMF sends the mapping between the S-NSSAI to the Alternative S-NSSAI to the UE in the UE Configuration Update message or in the Registration Accept message.
[0052] In 3GPP Release 17, the study of QoE framework deals with the specification of QoE measurements, definition of procedures to support QoE data collection in intra-system intra-RAT mobility scenarios, RAN visible QoE as well as QoE measurement collection per S-NSSAI. In the procedure of QoE measurements, when a service is provided within a configured slice to be measured for QoE measurements by the OAM, the QoE measurement could also be configured with a certain slice scope such that the user experience can be evaluated on a per-slice basis. The UE is having a QoE measurement for a QoE session that is the service provided by the application for which the QoE measurements are performed.
[0053] The UE application (APP) layer includes the slice identity (ID) inside the QoE report container when reporting the QoE measurement as specified in 3GPP TS 38.331. There is a QoE measurement report message as a general message sent from UE to the RAN via Radio Resource Control (RRC) signaling. For example, the MeasurementReportAppLayer message is specified in 3GPP TS 38.331. Below is the related contents as specified in 3GPP TS 38.331. The QoE measurement report message may comprise a container-based QoE measurement report, for example, the measReportAppLayerContainer-r17 as shown below.
[0054] In 3GPP Release17 QoE specifications, the UE Application layer is not aware of the slice scope. However, for Release18 QoE the slice scope information is included in the UE Application layer..
[0055] FIG. 1B illustrates an example of problem for QoE measurement reporting. As shown in FIG. 1B, for certain UEs, OAM may configure them through the RAN node to perform QoE measurements on a per slice basis. Thus, it can include in the QoE measurement configuration a slice scope that contains the slice for which the UE should perform measurements. Once UE receives the slice scope, it includes in the QoE measurement reports sent to the network the particular slice for which the measurements occurred inside the QoE container-based measurement report (i.e., measReportAppLayerContainer-r17 information element (IE) as shown in 3GPP TS 38.331) .
[0056] In the case of network slice replacement feature introduced in 3GPP Release18, for UEs that are providing QoE measurement reports to MCE, once slice remapping / replacement occurs, it might happen that MCE is not able to determine whether the measurements correspond to UEs whose slice has been remapped / replaced or UEs which originally operate with a certain slice or alternatively it can occur in case that the UE Access Stratum (AS) and UE Application layer do not get to know about network slice replacement. In that case, the MCE only receives measurement on the original / replaced slice and cannot tell why a potential change in the QoE performance might occur. This issue is even more emphasized if the UE never had an established PDU session for the replaced slice, as the OAM was never getting QoE measurement reports before for that UE and thus cannot tell the difference between a QoE measurement report corresponding to a UE that has been replaced to a slice or originally / natively operating with that slice. In the latter cases, the UE may only be informed about network slice replacement once it attempts to establish a PDU session with the slice which was replaced or when the UE transits from RRC_IDLE / INACTIVE to RRC_CONNECTED state and it had not received before such an update about network slice replacement from the network. In that scenario, the UE receives from the network the mapping between the original / replaced and replacement / alternative slice in the UE Configuration Update (UCU) message. Furthermore, UE receives an updated Allowed NSSAI list that includes also the replacement slice, which entails that the UE can utilize the replacement slice.
[0057] From the UE perspective in that moment there could the inconsistency that in case that the UE AS / UE Application layer are not aware of the original slice being replaced with an alternative slice, then it will include in the QoE measurement reports the original / replaced slice instead of the alternative slice. And in the scenario that the UE AS / UE Application layer are aware of original slice being replaced with an alternative slice, then it is not clear whether it should include the original / replaced or alternative slice in the QoE measurement report towards the network. Yet another issue that can occur is that when a UE was already reporting QoE measurement reports to an original slice before network slice replacement occurred and now the UE Application layer is indicated of network slice replacement, it is unclear how the reporting should be performed. And a similar problem occurs also when the network slice replacement has been terminated. That said when the alternative / replacement slice is reverted back to the original / replaced slice.
[0058] Given the above in any case, whether the UE AS / UE Application layer are informed or not of the alternative slice, the UE may provide inconsistent network slice values in the QoE measurement reports towards the network and MCE. Thus, the MCE might not be able to obtain proper information and cannot know if the reports include measurements that might be bad due to network slice replacement and concern UEs that operate originally with a slice or are replaced to that slice. The issue is even more emphasized in the scenario where the MCE has never received any reports from the UE before the network slice replacement.
[0059] According to some embodiments of the present disclosure, there is provided a solution to overcome those inconsistencies issues mentioned above and enable the preservation of smooth and accurate QoE measurement reporting in the occurrence of network slice replacement. Principles and embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.
[0060] FIG. 2 illustrates a flowchart illustrating an example of process for QoE reporting according to some embodiments of the present disclosure. For the purpose of discussion, the process 200 will be described with reference to FIG. 1A. The process 200 may involve the terminal device 110, the network device 120 as illustrated in FIG. 1A. It would be appreciated that although the process 200 for link has been described in the communication system 100 of FIG. 1A, this process may be likewise applied to other communication scenarios where different network devices are jointly deployed to provide respective serving cells.
[0061] In some embodiments, the terminal device 110 receives from the network device 120, first information 201 related to a network slice replacement indicating that a first network slice has been replaced with a second network slice. Then the terminal device 110 updates 202 a QoE measurement report message based on the first information for the network slice replacement. The terminal device 110 transmits to the network device, the updated QoE measurement report message 203 including at least second information indicating occurrence of the network slice replacement.
[0062] With the solution of the process, those inconsistency issues mentioned above are solved and the preservation of smooth and accurate QoE measurement reporting is provided, thereby improving the performance of communication with QoE measurement.
[0063] In some embodiments, the QoE measurement report message comprises at least one of a container-based QoE measurement report which is only modified by the application layer and specific to the application layer and a radio access network visible QoE (RVQoE) measurement report that is visible and can be modified by at least the Access Stratum of the terminal device.
[0064] the terminal device is further caused to:
[0065] In some embodiments, the terminal device 110 provides, from a Non-Access Stratum of the terminal device to at least one of an Access Stratum or application layer of the terminal device, first information related to the network slice replacement indicating at least the mapping between the first network slice and the second network slice for the network slice replacement. Specifically, the UE 110 is informed from AMF about network slice replacement in the Registration Accept Message or in the UE Configuration Update message that are NAS signaling messages. Thus, tt can occur that the Access Stratum of UE 110 is not aware of network slice replacement. In that case NAS stratum of UE 110 informs AS stratum and / or Application layer of UE 110 about network slice replacement by indicating the mapping between the original / replacement slice with the alternative slice with potentially including a flag that indicates network slice replacement.
[0066] In some embodiments, the terminal device 110 provides from the Non-Access Stratum to the at least one of the Access Stratum or the application layer, an indication that the network slice replacement has terminated. Specifically, NAS of UE 110 may inform AS stratum and / or Application layer of UE 110 that network slice replacement has terminated.
[0067] In some embodiments, the terminal device 110 provides from the Non-Access Stratum to the at least one of the Access Stratum or the application layer, information of a timer indicating a duration of the network slice replacement. Specifically, the NAS of UE 110 may provide a timer to AS stratum and / or Application layer of UE 110 that indicates for how long network slice replacement will occur.
[0068] FIG. 3A illustrates a flowchart illustrating another example of process for QoE reporting according to some embodiments of the present disclosure. In FIG. 3A, there is detailed signaling workflow to support above-mentioned solution. For the purpose of discussion, the process 300A will be described with reference to FIG. 1A. The process 300A may involve the terminal device 110, the RAN node 120-1, the AMF 120-2, the OAM 120-3, and the MCE / TCE 120-4 as illustrated in FIG. 1A. It would be appreciated that although the process 300A has been described in the communication system 100 of FIG. 1A, this process may be likewise applied to other communication scenarios where different network devices are jointly deployed to provide respective serving cells.
[0069] In some embodiments, as shown in FIG. 3A, the UE 110 is in IDLE mode at 301. Then the OAM 120-3 transmits the QoE Measurement Configuration including the slice scope 302 to the RAN node 120-1. Specifically, OAM 120-3 configures the QoE measurement configuration for a group of UEs and sends it to the RAN node 120-1, including the slice scope for which QoE measurements should be performed. In the example scenario, the slice scope currently contains slice 1 and slice 2.
[0070] In some embodiments, as shown in FIG. 3A, at 303, the slice 1 is congested at the core network and AMF 120-2 decides to remap / replace slice 1 with slice 2. Specifically, due to core network congestion or maintenance slice 1 is replaced with slice 2 as decided by AMF 120-2. Then at 304, the UE 110 joins the network and attempts to register with slice 1 and establish a PDU session with slice 1.
[0071] In some embodiments, as shown in FIG. 3A, at 305, the UE 110 is provided with alternative slice 2 and slice 1 in the Allowed NSSAI list and a mapping between original slice 1 and alternative slice 2. Specifically, AMF 120-2 updates the UE 110 NAS with an Allowed NSSAI list including slice 1 and slice 2 and a mapping that slice 1 has been replaced with slice 2. Then at 306, the UE 110 NAS informs UE 110 AS about network slice replacement indicating the mapping between the original and alternative slice. The RAN node 120-1 sends the AppLayerConfiguration with the QoE Measurement Configuration 307 towards the UE 110 AS including the slice scope via RRC signaling. And the UE 110 AS in turn forwards the QoE Measurement Configuration 308 to the UE 110 Application layer via the AT commands. The 307 and 308 might occur before 305 and 306 and the order has no specific impact on the solution. However, as an optimization if 307 and 308 occur before 305 and 306, the UE 110 AS stratum may inform UE 110 NAS stratum that QoE measurement configuration related with slice 1 is received. In case that UE 110 NAS stratum if it has not received such indication it will not send the mapping information related to network slice replacement as it is not relevant for UE 110 AS stratum at this point of time.
[0072] In some embodiments, the replacement information is provided to the application layer of the terminal device 110. And the first slice ID and the second slice ID are included in an updated QoE measurement report by the application layer of the terminal device 110 (i.e., container-based QoE measurement report) . Specifically, as shown in FIG. 3A, at 309, the UE 110 Application layer is made aware that original slice 1 has been replaced with alternative slice 2. Thus, the UE 110 Application layer provides both the original slice 1 and alternative slice 2 in the QoE measurement report container (i.e., measReportAppLayerContainer-r17 information element (IE) as shown in 3GPP TS 38.331) . At 310, the UE 110 Application layer reports on remapped / replacement slice 2 containing also the original slice in the QoE measurement report container. The UE 110 Application layer forwards the QoE measurement report container including both the original slice 1 and alternative slice 2 311 to UE 110 AS. And then the UE 110 AS forwards the QoE measurement report (i.e., MeasurementReportAppLayer message as shown in 3GPP TS 38.331) 312 to RAN node 120-1 via RRC signaling. The RAN node 120-1 forwards the QoE measurement report 313 to MCE / TCE 120-4 for further analysis.
[0073] In some embodiments, the adjustments have to be made to the QoE measurement report container to include not only 1 slice ID, but 2 slide IDs both the original and alternative slice which will have impact on the structure of the existing QoE container-based measurement report.
[0074] FIG. 3B illustrates a flowchart illustrating another example of process for QoE measurement reporting according to some embodiments of the present disclosure. In FIG. 3B, there is detailed signaling workflow to support above-mentioned solution. For the purpose of discussion, the process 300B will be described with reference to FIG. 1A. The process 300B may involve the terminal device 110, the RAN node 120-1, the AMF 120-2, the OAM 120-3, and the MCE / TCE 120-4 as illustrated in FIG. 1A. It would be appreciated that although the process 300B has been described in the communication system 100 of FIG. 1A, this process may be likewise applied to other communication scenarios where different network devices are jointly deployed to provide respective serving cells.
[0075] In some embodiments, as shown in FIG. 3B, the UE 110 is in IDLE mode at 321. Then the OAM 120-3 transmits the QoE Measurement Configuration including the slice scope 322 to the RAN node 120-1. Specifically, OAM 120-3 configures the QoE measurement configuration for a group of UEs and sends it to the RAN node 120-1, including the slice scope for which QoE measurements should be performed. In this example, the slice scope contains slice 1 and slice 2.
[0076] In some embodiments, as shown in FIG. 3B, at 323, the slice 1 is congested at the core network and AMF 120-2 decide to remap / replace slice 1 with slice 2. Specifically, due to core network congestion or maintenance slice 1 is replaced with slice 2 as decided by AMF 120-2. Then at 324, the UE 110 joins the network and attempts to register with slice 1 and establish a PDU session with slice 1.
[0077] In some embodiments, as shown in FIG. 3B, at 325, the UE 110 is provided with alternative slice 2 and slice 1 in the Allowed NSSAI list and a mapping between original slice 1 and alternative slice 2. Specifically, AMF 120-2 updates the UE 110 NAS with an Allowed NSSAI list including slice 1 and slice 2 and a mapping that slice 1 has been replaced with slice 2. Then at 326, the UE 110 NAS informs UE 110 AS about network slice replacement indicating the mapping between the original and alternative slice. The RAN node 120-1 sends the AppLayerConfiguration with the QoE Measurement Configuration 327 towards the UE 110 AS including the slice scope via RRC signaling. And the UE 110 AS in turn forwards the QoE Measurement Configuration 328 to the UE 110 Application layer via AT commands. The 327 and 328 might occur before 325 and 326 and the order has not specific impact on the solution. However, as an optimization if 327 and 328 occur before 325 and 326, the UE 110 AS stratum may inform UE 110 NAS stratum that QoE measurement configuration related with slice1 is received. In case that UE 110 NAS stratum has not received such indication it will not send the mapping information as it is not relevant for UE 110 AS stratum.
[0078] In some embodiments, the replacement information is not provided to the application layer of the terminal device 110. And the updated container-based QoE measurement report comprises a first slice ID of the first network slice. The information of occurrence of the network slice replacement comprises a second slice ID of the second network slice outside of the container-based QoE measurement report. Specifically, as shown in FIG. 3B, at 329, the UE 110 Application layer is not aware of network slice replacement thus it provides only the original slice 1 in the QoE measurement report container. The UE 110 Application layer provides the AppLayerMeasurement QoE report on slice 1 330 to the UE 110 AS stratum. At 331, the UE 110 AS includes as a separate IE outside of the QoE measurement container, but within the QoE measurement report sent to the network report (i.e., MeasurementReportAppLayer message as shown in 3GPP TS 38.331) the alternative slice 2. Then UE 110 AS stratum forwards the QoE measurement report including the new information with alternative slice 2 332 to the RAN 120-1. The RAN 120-1 forwards the QoE measurement container report and the new IEs added by UE AS 333 to the MCE / TCE 120-4 for further analysis.
[0079] In some embodiments, there are no impacts to the QoE measurement report container, as they will only include 1 slice ID as it is currently specified by 3GPP. However, in some embodiments, the UE 110 AS behavior will change and reporting will be enhanced with additional Information Elements (IEs) as mentioned in the example above shown in FIG. 3B.
[0080] FIG. 4A illustrates a flowchart illustrating another example of process for QoE reporting according to some embodiments of the present disclosure. In FIG. 4A, there is detailed signaling workflow to support above-mentioned solution. For the purpose of discussion, the process 400A will be described with reference to FIG. 1A. The process 400A may involve the terminal device 110, the RAN node 120-1, the OAM 120-3, and the MCE / TCE 120-4 as illustrated in FIG. 1A. It would be appreciated that although the process 400A has been described in the communication system 100 of FIG. 1A, this process may be likewise applied to other communication scenarios where different network devices are jointly deployed to provide respective serving cells.
[0081] In some embodiments, as shown in FIG. 4A, at 401, UE 110 joins the network at RAN node for slice 1 but has not yet established any PDU session with slice 1. Then the OAM 120-3 configures the QoE measurement configuration for the UE or group of UEs and sends 402 to the RAN node 120-1, including the slice scope for which QoE measurements should be performed. In this example, the slice scope contains slice 1 and slice 2. The RAN node 120-1 transmits the AppLayerConfiguration 403 towards the UE 110 AS including the slice scope via RRC signaling. UE 110 AS in turn forwards AppLayerConfiguration 404 to UE 110 Application layer via AT commands.
[0082] In some embodiments, as shown in FIG. 4A, at 405, due to core network congestion or maintenance slice 1 is replaced with slice 2 as decided by AMF. At 406, the UE 110 is not aware of network slice replacement because it had not created any PDU session with slice 1 before and also does not contain slice 2 in the Allowed NSSAI list. At 407, the UE 110 attempts to establish a PDU session with slice 1. At 408, UE is provided with alternative slice 2 in Allowed NSSAI and mapping information between original slice 1 and alternative slice 2. At 409, the UE 110 NAS informs UE 110 AS about network slice replacement indicating the mapping between the original and alternative slice.
[0083] In some embodiments, the replacement information is provided to the application layer of the terminal device 110. The updated container-based QoE measurement report comprises a first slice ID of the first network slice and a first flag indicating that the network slice replacement has occurred. Alternatively, the updated container-based QoE measurement report comprises a second slice ID of the second network slice and a second flag indicating that the second network slice is a replacement slice. Alternatively, the first flag or the second flag is included outside the container-based QoE measuremetn report by the application layer of the terminal device via RRC signalling.
[0084] Specifically. As shown in FIG. 4A, the UE 110 Application layer determines that original slice 1 has been replaced with alternative slice 2. Thus, UE 110 Application layer provides the alternative slice 2 and a flag indicating that this is a replacement slice or the original slice 1 and a flag indicating network slice replacement within the container-based QoE measurement report or outside the container-based QoE measurementreport (i.e., measReportAppLayerContainer-r17 information element (IE) as shown in 3GPP TS 38.331) , but within the QoE measurement report message sent to the network (i.e., MeasurementReportAppLayer message as shown in 3GPP TS 38.331) . The UE 110 Application layer forwards the QoE measurement container report (The terms of QoE measurement container report and container-based QoE measurement report are interchangeable) including both the original slice 1 and a flag indicating network slice replacement or the alternative slice 2 and a flag indicating that this is a replacement slice 411 to UE 110 AS. And UE 110 AS forwards the QoE measurement container report including both the original slice 1 and a flag indicating network slice replacement or the alternative slice and a flag indicating that this is a replacement slice 412 to RAN node 120. The RAN node 120-1 then forwards it 413 to the MCE / TCE 120-4 for further analysis.
[0085] In some embodiments, adjustments have to be made to the QoE measurement report container to include not only 1 slice ID, but also a flag that indicates that network slice replacement occurred. This will impact the structure of the container-based QoE measurement report. Furthermore, UE 110 Application layer behavior will need be adjusted as explained beforehand.
[0086] FIG. 4B illustrates a flowchart illustrating another example of process for QoE reporting according to some embodiments of the present disclosure. In FIG. 4B, there is detailed signaling workflow to support above-mentioned solution. For the purpose of discussion, the process 400B will be described with reference to FIG. 1A. The process 400B may involve the terminal device 110, the RAN node 120-1, the OAM 120-3, and the MCE / TCE 120-4 as illustrated in FIG. 1A. It would be appreciated that although the process 400B has been described in the communication system 100 of FIG. 1A, this process may be likewise applied to other communication scenarios where different network devices are jointly deployed to provide respective serving cells.
[0087] In some embodiments, as shown in FIG. 4B, at 421, UE 110 joins the network at RAN node for slice 1 but has not yet established any PDU session with slice 1. Then the OAM 120-3 configures the QoE measurement configuration for the UE or group of UEs and sends 422 to the RAN node 120-1, including the slice scope for which QoE measurements should be performed. In this example, the slice scope contains slice 1 and slice 2. The RAN node 120-1 transmit the AppLayerConfiguration 423 towards the UE 110 AS including the slice scope. UE 110 AS in turn forwards AppLayerConfiguration 424 to UE 110 Application layer.
[0088] In some embodiments, as shown in FIG. 4B, at 425, due to core network congestion or maintenance slice 1 is replaced with slice 2 as decided by AMF. At 426, the UE 110 is not aware of network slice replacement because it had not created any PDU session with slice 1 before and also does not contain slice 2 in the Allowed NSSAI list. At 427, the UE 110 attempts to establish a PDU session with slice 1. At 428, UE is provided with alternative slice 2 in the Allowed NSSAI list and mapping information between original slice 1 and alternative slice 2. At 429, the UE 110 NAS informs UE 110 AS about network slice replacement indicating the mapping between the original and alternative slice.
[0089] In some embodiments, the replacement information is not provided to the application layer of the terminal device 110. The updated QoE measurement report message comprises a first slice ID of the first network slice. The information of occurrence of the network slice replacement comprises a first flag indicating that the network slice replacement has occurred. Alternatively, the information of occurrence of the network slice replacement further comprises the first slice ID, a second slice ID of the second network slice, and mapping between the first slice ID and the second slice ID.
[0090] Specifically, as shown in FIG. 4B, at 430, UE 110 Application layer is not aware of network slice replacement thus it provides only the original slice 1 in the QoE measurement report container. The UE 110 Application layer provides the AppLayerMeasurement QoE report on slice 1 431 to the UE 110 AS stratum. And at 432, UE 110 AS includes as a separate IE outside of the QoE measurement container a flag indicating network slice replacement and potentially also the alternative slice 2. The UE 110 AS stratum transmits the QoE measurement container report and the new IE as including a flag indicating network slice replacement and potentially also the alternative slice 2 433 to the RAN node 120-1. The RAN node 120-1 transmits it 434 to the MCE / TCE 120-4.
[0091] In some embodiments, there are no impacts to the QoE measurement report container, as they will only include 1 slice ID. Furthermore, UE Application layer behavior will not change. However, UE AS behavior will change and reporting will be enhanced with additional IEs as shown in FIG. 4B.
[0092] In some embodiments, a possible XML schema of QoE report container is shown as below.
[0093] As shown above, the scheme includes field of “<xs: attribute name="snssai" type="xs: unsignedLong" use=” optional" / >” for the original SNSSAI / alternative SNSSAI or a flag to indicate network slice replacement or that this is a replaced network slice.
[0094] In some embodiments, although solutions in FIG. 3A and 3B are shown for the case when UE 110 was IDLE before network slice replacement occurred and solutions in FIG. 4A and 4B are shown for the case where the UE 110 had not established any PDU session with the network slice before network slice replacement had occurred and thus no measurement were provided to OAM, all solutions hold for all cases with the common ground that previous measurements were not provided to OAM before network slice replacement occurred.
[0095] FIG. 5 illustrates a flowchart illustrating another example of process for QoE reporting according to some embodiments of the present disclosure. In FIG. 5, there is detailed signaling workflow to support the above-mentioned solution. For the purpose of discussion, the process 500 will be described with reference to FIG. 1A. The process 500 may involve the terminal device 110, the RAN node 120-1, the OAM 120-3, and the MCE / TCE 120-4 as illustrated in FIG. 1A. It would be appreciated that although the process 500 has been described in the communication system 100 of FIG. 1A, this process may be likewise applied to other communication scenarios where different network devices are jointly deployed to provide respective serving cells.
[0096] In some embodiments, as shown in FIG. 5, at 501, UE 110 joins the network at RAN node for slice 1 and establishes a PDU session with slice 1. Then OAM 120-3 configures the QoE measurement configuration for the UE or group of UEs and sends 502 to the RAN node 120-1, including the slice scope for which measurements should be performed. In this example, the slice scope contains slice 1 and slice 2. The RAN node 120-1 sends the AppLayerConfiguration 503 towards the UE 110 AS including the slice scope. UE 110 AS in turn forwards it 504 to UE 110 Application layer. At 505, the UE 110 Application layer has measurements available for the QoE session. The UE 110 Application layer provides the QoE measurement reports 506 including the container-based QoE measurement report that contains slide 1 to UE 110 AS that forwards the measurements 507 to RAN node 120-1 and further to MCE / TCE 120-4 508 for further analysis and optimization.
[0097] In some embodiments, as shown in FIG. 5, at 509, due to core network congestion or maintenance slice 1 is replaced with slice 2 as decided by AMF. At 510, the AMF updates the UE NAS with a new Allowed NSSAI list including slice 2 and the mapping between slice 1 and alternative slice 2. At 511, the UE 110 NAS informs UE AS about network slice replacement indicating the mapping between the original slice 1 and alternative slice 2. At 512, the UE 110 Application layer is made aware of network slice replacement and contains measurements for an ongoing QoE session for the original slice 1.
[0098] In some embodiments, the terminal device 110 transmits at least one first QoE measurement report for the first network slice until at least one end of the QoE session. The QoE session duration consists of the time that the terminal device 110 receives the service for which a QoE measurement is performed. And the terminal device 110 provides, outside of the at least one first container-based QoE measurement report, a first flag indicating the network slice replacement has occurred. Specifically, as shown in FIG. 5, at 513, the UE 110 Application layer although network slice replacement has occurred keeps on reporting on the original slice 1 until the ongoing QoE session has terminated and the respective QoE measurement report has been submitted to the network, additionally it may indicate outside of the container-based QoE measurement report, but within the QoE measurement report message an IE that indicates that replacement has occurred in the during the ongoing QoE session for which the QoE measurements are reported. This solution does have impact on on the container QoE measurement report formatting, but OAM might not have the most accurate / updated information with respect to network slice replacement.
[0099] In some embodiments, the terminal device 110 transmits at least one first container-based QoE measurement report indicating the first network slice until a start of the network slice replacement, and transmits at least one second container-based QoE measurement report indicating the second network slice from the start of the network slice replacement to an end of the QoE session. Specifically, as shown in FIG. 5, at 514, UE 110 Application layer reports a first report for original slice 1 with termination time indicating not the end of the QoE session, but the start of network slice replacement. UE further reports a second report for alternative slice 2 where start time is the time of network slice replacement and end time the end of the QoE session. This solution provides the most updated / accurate information with respect to replacement to OAM, but has high impact on the container-based QoE measurement reports.
[0100] In some embodiments, the terminal device 110 discards at least one first container-based QoE measurement report for the first network slice, and transmits at least one second container-based QoE measurement report indicating the second network slice from a start of the QoE session to an end of the QoE session. And the at least one second container-based QoE measurement report includes a first flag indicating the network slice replacement has occurred or collected QoE measurement data for the first network slice. Specifically, as shown in FIG. 5, at 515, UE 110 Application layer discards the previous container-based QoE measurement reports on original slice 1 and includes a new container-based QoE measurement report indicating the alternative slice 2 while attaching also the previous measurements. This solution provides relatively accurate information to OAM regarding the measurement related to network slice replacement and also has less impact on the structure of the container-based QoE measurement report.
[0101] In view of the above description of the various embodiments of the present disclosure, these embodiments of the present disclosure provide the advantage of solving the inconsistencies issues and the preservation of smooth and accurate QoE measurement reporting is provided. Then the performance of communication with QoE measurement is improved.
[0102] FIG. 6 shows a flowchart of an example method 600 implemented at a terminal device in accordance with some embodiments of the present disclosure. For the purpose of discussion, the method 600 will be described from the perspective of the terminal device 110 with reference to FIG. 1A.
[0103] At block 610, the terminal device 110 receives from a network device, first information related to a network slice replacement indicating that a first network slice has been replaced with a second network slice. At block 620, the terminal device 110 updates, a quality of experience, QoE, measurement report message, based on the first information for the network slice replacement. At block 630, the terminal device 110 transmits, to the network device, the updated QoE measurement report message including at least second information indicating occurrence of the network slice replacement.
[0104] In some embodiments, the terminal device provide, from a Non-Access Stratum to at least one of a Access Stratum or an application layer of the terminal device, replacement information indicating at least the mapping between the first network slice and the second network slice for the network slice replacement. The terminal device provides from the Non-Access Stratum to the at least one of the Access Stratum or the application layer, an indication that the network slice replacement has terminated. The terminal device provides, from the Non-Access Stratum to the at least one of the Access Stratum or the application layer, information of a timer indicating a duration of the network slice replacement. The QoE measurement report message comprises at least one of a container-based QoE measurement report which is only modified by the application layer and specific to the application layer and a radio access network visible QoE (RVQoE) measurement report that is visible and can be modified by at least the Access Stratum of the terminal device.
[0105] In some embodiments, the replacement information is provided to the application layer of the terminal device. The updated QoE measurement report message comprises a first slice identity (ID) of the first network slice and a second slice ID of the second network slice. The first slice ID and the second slice ID are included in an updated container-based QoE measurement report by the application layer of the terminal device. The updated container-based QoE measurement report comprises a first slice ID of the first network slice and a first flag indicating occurrence of the network slice replacement. The first flag or the second flag is included inside a container-based QoE measurement report or outside the container-based QoE measurement report by the application layer of the terminal device.
[0106] In some embodiments, the replacement information is provided to the Access Stratum of the terminal device. The updated QoE measurement report message comprises a first slice ID of the first network slice and the information of occurrence of the network slice replacement comprises a second slice ID of the second network slice outside of the container-based QoE measurement report. The updated QoE measurement report message comprises a first slice ID of the first network slice and the information of occurrence of the network slice replacement comprises a first flag indicating that the network slice replacement has occurred. The information of occurrence of the network slice replacement further comprises the first slice ID, a second slice ID of the second network slice, and mapping between the first slice ID and the second slice ID. The information of occurrence of the network slice replacement is provided by the Access Stratum of the terminal device to the network device.
[0107] In some embodiments, the terminal device performs at least one operation related to a QoE session that has already started and have not yet been reported at the occurrence of the network slice replacement. The at least one operation comprises: transmitting at least one first container-based QoE measurement report for the first network slice until at least one end of the QoE session, or providing, outside of the at least one first container-based QoE measurement report, a first flag indicating the network slice replacement has occurred, or transmitting at least one first container-based QoE measurement report indicating the first network slice until a start of the network slice replacement and transmitting at least one second container-based QoE measurement report indicating the second network slice from the start of the network slice replacement to an end of the QoE session, or discarding at least one first container-based QoE measurement report for the first network slice and transmitting at least one second container-based QoE measurement report indicating the second network slice from a start of the QoE session to an end of the QoE session.
[0108] FIG. 7 shows a flowchart of an example method 700 implemented at a network device in accordance with some embodiments of the present disclosure. For the purpose of discussion, the method 700 will be described from the perspective of the network device 120 with reference to FIG. 1A.
[0109] At block 710, the network device 120 transmits to a terminal device, an indication that a first network slice has been replaced with a second network slice for a network slice replacement. At block 720, the network device receives from the terminal device, an updated quality of experience, QoE, measurement report message including at least information indicating occurrence of the network slice replacement.
[0110] In some embodiments, the updated QoE measurement report message comprises a first slice identity (ID) of the first network slice and a second slice ID of the second network slice in the container-based QoE measurement report. In other embodiments, the container-based QoE measurement report comprises a first slice ID of the first network slice and a first flag indicating occurrence of the network slice replacement. In yet another embodiment, the updated QoE measurement report message comprises a first slice ID of the first network slice and the information of occurrence of the network slice replacement comprises a second slice ID of the second network slice outside of a container-based QoE measurement report.
[0111] In some embodiments, the updated QoE measurement report message comprises a first slice ID of the first network slice and the information of occurrence of the network slice replacement comprises a first flag indicating that the network slice replacement has occurred inside the container-based QoE measurement report. The information of occurrence of the network slice replacement further comprises the first slice ID, a second slice ID of the second network slice, and mapping between the first slice ID and the second slice ID.
[0112] In some embodiments, an apparatus capable of performing any of the method 600 (for example, the terminal device 110) may comprise means for performing the respective steps of the method 600. The means may be implemented in any suitable form. For example, the means may be implemented in a circuitry or software module.
[0113] In some embodiments, the apparatus comprises means for receiving, from a network device, first information related to a network slice replacement indicating that a first network slice has been replaced with a second network slice. The apparatus comprises means for updating, a quality of experience, QoE, measurement report message, based on the first information for the network slice replacement. The apparatus comprises means for transmitting, to the network device, the updated QoE measurement report message including at least second information indicating occurrence of the network slice replacement.
[0114] In some embodiments, the apparatus comprises means for providing, from a Non-Access Stratum to at least one of an Access Stratum or an application layer of the terminal device, replacement information indicating at least the mapping between the first network slice and the second network slice for the network slice replacement. The apparatus comprises means for providing from the Non-Access Stratum to the at least one of the Access Stratum or the application layer, an indication that the network slice replacement has terminated. The apparatus comprises means for providing, from the Non-Access Stratum to the at least one of the Access Stratum or the application layer, information of a timer indicating a duration of the network slice replacement. The QoE measurement report message comprises at least one of a container-based QoE measurement report which is only modified by the application layer and specific to the application layer and a radio access network visible QoE (RVQoE) measurement report that is visible can be modified by at least the Access Stratum of the terminal device.
[0115] In some embodiments, the replacement information is provided to the application layer of the terminal device. The updated QoE measurement report message comprises a first slice identity (ID) of the first network slice and a second slice ID of the second network slice. The first slice ID and the second slice ID are included in a container-based QoE measurement report by the application layer of the terminal device. The updated QoE measurement report message comprises a first slice ID of the first network slice and a first flag indicating occurrence of the network slice replacement. The first flag or the second flag is included inside a container-based QoE measurement report or outside the container-based QoE measurement report by the application layer of the terminal device.
[0116] In some embodiments, the replacement information is provided to the Access Stratum of the terminal device. The updated QoE measurement report message comprises a first slice ID of the first network slice and the information of occurrence of the network slice replacement comprises a second slice ID of the second network slice outside of the QoE measurement report. The updated QoE measurement report message comprises a first slice ID of the first network slice and the information of occurrence of the network slice replacement comprises a first flag indicating that the network slice replacement has occurred. The information of occurrence of the network slice replacement further comprises the first slice ID, a second slice ID of the second network slice, and mapping between the first slice ID and the second slice ID. The information of occurrence of the network slice replacement is provided by the Access Stratum of the terminal device to the network device.
[0117] In some embodiments, the apparatus comprises means for performing at least one operation related to a QoE session that has already started and have not yet been reported at the occurrence of the network slice replacement. The at least one operation comprises: transmitting at least one first container-based QoE measurement report for the first network slice until at least one end of the QoE session, or providing, outside of the at least one first container-based QoE measurement report, a first flag indicating the network slice replacement has occurred, or transmitting at least one first container-based QoE measurement report indicating the first network slice until a start of the network slice replacement and transmitting at least one second container-based QoE measurement report indicating the second network slice from the start of the network slice replacement to an end of the QoE session, or discarding at least one first container-based QoE measurement report for the first network slice and transmitting at least one second container-based QoE measurement report indicating the second network slice from a start of the QoE session to an end of the QoE session.
[0118] In some embodiments, an apparatus capable of performing any of the method 700 (for example, the network device 120) may comprise means for performing the respective steps of the method 700. The means may be implemented in any suitable form. For example, the means may be implemented in a circuitry or software module.
[0119] In some embodiments, the apparatus comprises means for transmitting, to a terminal device, an indication that a first network slice has been replaced with a second network slice for a network slice replacement. The apparatus comprises means for receiving, from the terminal device, an updated quality of experience, QoE, measurement report message including at least information indicating occurrence of the network slice replacement.
[0120] In some embodiments, the updated QoE measurement report message comprises a first slice identity (ID) of the first network slice and a second slice ID of the second network slice. The updated QoE measurement report message comprises a first slice ID of the first network slice and a first flag indicating occurrence of the network slice replacement. In other embodiments, the updated QoE measurement report message comprises a first slice ID of the first network slice and the information of occurrence of the network slice replacement comprises a second slice ID of the second network slice outside of a QoE measurement report.
[0121] In some embodiments, the updated QoE measurement report message comprises a first slice ID of the first network slice and the information of occurrence of the network slice replacement comprises a first flag indicating that the network slice replacement has occurred. The information of occurrence of the network slice replacement further comprises the first slice ID, a second slice ID of the second network slice, and mapping between the first slice ID and the second slice ID.
[0122] FIG. 8 is a simplified block diagram of a device 800 that is suitable for implementing embodiments of the present disclosure. The device 800 may be provided to implement the communication device, for example the terminal device 110, the network device 120 as shown in FIG. 1A. As shown, the device 800 includes one or more processors 810, one or more memories 820 coupled to the processor 810, and one or more communication modules 840 coupled to the processor 810.
[0123] The communication module 840 is for bidirectional communications. The communication module 840 has at least one antenna to facilitate communication. The communication interface may represent any interface that is necessary for communication with other network elements.
[0124] The processor 810 may be of any type suitable to the local technical network and may include one or more of the following: general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and processors based on multicore processor architecture, as non-limiting examples. The device 800 may have multiple processors, such as an application specific integrated circuit chip that is slaved in time to a clock which synchronizes the main processor.
[0125] The memory 820 may include one or more non-volatile memories and one or more volatile memories. Examples of the non-volatile memories include, but are not limited to, a Read Only Memory (ROM) 824, an electrically programmable read only memory (EPROM) , a flash memory, a hard disk, a compact disc (CD) , a digital video disk (DVD) , and other magnetic storage and / or optical storage. Examples of the volatile memories include, but are not limited to, a random access memory (RAM) 822 and other volatile memories that will not last in the power-down duration.
[0126] A computer program 830 includes computer executable instructions that are executed by the associated processor 810. The program 830 may be stored in the ROM 824. The processor 810 may perform any suitable actions and processing by loading the program 830 into the RAM 822.
[0127] The embodiments of the present disclosure may be implemented by means of the program 830 so that the device 800 may perform any process of the disclosure as discussed with reference to FIGS. 2 to 7. The embodiments of the present disclosure may also be implemented by hardware or by a combination of software and hardware.
[0128] In some embodiments, the program 830 may be tangibly contained in a computer readable medium which may be included in the device 800 (such as in the memory 820) or other storage devices that are accessible by the device 800. The device 800 may load the program 830 from the computer readable medium to the RAM 822 for execution. The computer readable medium may include any types of tangible non-volatile storage, such as ROM, EPROM, a flash memory, a hard disk, CD, DVD, and the like. FIG. 9 shows an example of the computer readable medium 900 in form of CD or DVD. The computer readable medium has the program 830 stored thereon.
[0129] Generally, various embodiments of the present disclosure may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. Some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device. While various aspects of embodiments of the present disclosure are illustrated and described as block diagrams, flowcharts, or using some other pictorial representations, it is to be understood that the block, apparatus, system, technique or method described herein may be implemented in, as non-limiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof.
[0130] The present disclosure also provides at least one computer program product tangibly stored on a non-transitory computer readable storage medium. The computer program product includes computer-executable instructions, such as those included in program modules, being executed in a device on a target real or virtual processor, to carry out the methods 800-900 as described above with reference to FIGS. 8-9. Generally, program modules include routines, programs, libraries, objects, classes, components, data structures, or the like that perform particular tasks or implement particular abstract data types. The functionality of the program modules may be combined or split between program modules as desired in various embodiments. Machine-executable instructions for program modules may be executed within a local or distributed device. In a distributed device, program modules may be located in both local and remote storage media.
[0131] Program code for carrying out methods of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the program codes, when executed by the processor or controller, cause the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The program code may execute entirely on a machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
[0132] In the context of the present disclosure, the computer program codes or related data may be carried by any suitable carrier to enable the device, apparatus or processor to perform various processes and operations as described above. Examples of the carrier include a signal, computer readable medium, and the like.
[0133] The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable medium may include but not limited to an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of the computer readable storage medium would include an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM) , a read-only memory (ROM) , an erasable programmable read-only memory (EPROM or Flash memory) , an optical fiber, a portable compact disc read-only memory (CD-ROM) , an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. The term “non-transitory, ” as used herein, is a limitation of the medium itself (i.e., tangible, not a signal) as opposed to a limitation on data storage persistency (e.g., RAM vs. ROM) .
[0134] Further, while operations are depicted in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. In certain circumstances, multitasking and parallel processing may be advantageous. Likewise, while several specific implementation details are contained in the above discussions, these should not be construed as limitations on the scope of the present disclosure, but rather as descriptions of features that may be specific to particular embodiments. Certain features that are described in the context of separate embodiments may also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment may also be implemented in multiple embodiments separately or in any suitable sub-combination.
[0135] Although the present disclosure has been described in languages specific to structural features and / or methodological acts, it is to be understood that the present disclosure defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.
Claims
1.A terminal device comprising:at least one processor; andat least one memory storing instructions that, when executed by the at least one processor, cause the terminal device at least to:receive, from a network device, first information related to a network slice replacement indicating that a first network slice has been replaced with a second network slice;update, a quality of experience, QoE, measurement report message, based on the first information for the network slice replacement; andtransmit, to the network device, the updated QoE measurement report message including at least second information indicating occurrence of the network slice replacement.2.The terminal device of claim 1, wherein the terminal device is further caused to:provide, from a Non-Access Stratum of the terminal device to at least one of an Access Stratum or application layer of the terminal device, information related to the network slice replacement indicating at least the mapping between the first network slice and the second network slice for the network slice replacement.3.The terminal device of claim 1, wherein the terminal device is further caused to:provide, from a Non-Access Stratum of the terminal device to the at least one of an Access stratum or application layer of the terminal device, an indication that the network slice replacement has terminated.4.The terminal device of claim 1 or 2, wherein the terminal device is further caused to:provide, from the Non-Access Stratum to the at least one of the Access Stratum or the application layer, information of a timer indicating a duration of the network slice replacement.5.The terminal device of any of claims 1-4, wherein the QoE measurement report message comprises at least one of a container-based QoE measurement report which is only modified by the application layer and specific to the application layer of the terminal device and a radio access network visible QoE (RVQoE) measurement report that is visible and can be modified by at least the Access Stratum of the terminal device.6.The terminal device of any of claims 1-5, wherein the first information related to network slice replacement is provided to the application layer of the terminal device.7.The terminal device of claim 6, wherein the updated QoE measurement report message comprises a first slice identity (ID) of the first network slice and a second slice ID of the second network slice.8.The terminal device of claim 7, wherein the first slice ID and the second slice ID are included in the container-based QoE measurement report by the application layer of the terminal device.9.The terminal device of claim 6, wherein:the updated QoE measurement report message comprises a first slice ID of the first network slice; anda first flag indicating occurrence of the network slice replacement.10.The terminal device of claim 6, wherein:the updated QoE measurement report message comprises a second slice ID of the second network slice; anda second flag indicating that the second network slice is a replacement slice.11.The terminal device of claim 9 or 10, wherein the first flag or the second flag is included inside the container-based QoE measurement report or outside the container-based QoE measurement report by the application layer of the terminal device.12.The terminal device of any of claims 1-3, wherein the first information related to network slice replacement is provided to the Access Stratum of the terminal device.13.The terminal device of claim 12, wherein:the updated QoE measurement report message comprises a first slice ID of the first network slice; andthe information of occurrence of the network slice replacement comprises a second slice ID of the second network slice.14.The terminal device of claim 12, wherein:the updated QoE measurement report message comprises a first slice ID of the first network slice; andthe information of occurrence of the network slice replacement comprises a first flag indicating that the network slice replacement has occurred.15.The terminal device of claim 14, wherein the information of occurrence of the network slice replacement further comprises the first slice ID, a second slice ID of the second network slice, and mapping between the first slice ID and the second slice ID.16.The terminal device of any of claim 13-15, wherein the information of occurrence of the network slice replacement is outside the container-based QoE measurement report and is provided by the Access Stratum of the terminal device to the network device via Radio Resource Control (RRC) signaling.17.The terminal device of any of claims 1-16, wherein the terminal device is further caused to:perform at least one operation related to a QoE session that has already started and has not yet been reported at the occurrence of the network slice replacement.18.The terminal device of claim 17, wherein the at least one operation comprises:transmitting at least one first QoE measurement report for the first network slice until at least one end of the QoE session.19.The terminal device of claim 18, wherein the at least one operation further comprises:providing, outside of the at least one first QoE measurement report, a first flag indicating the network slice replacement has occurred.20.The terminal device of claim 17, wherein the at least one operation comprises:transmitting at least one first container-based QoE measurement report indicating the first network slice until a start of the network slice replacement; andtransmitting at least one second container-based QoE measurement report indicating the second network slice from the start of the network slice replacement to an end of the QoE session.21.The terminal device of claim 17, wherein the at least one operation comprises:discarding at least one first container-based QoE measurement report for the first network slice; andtransmitting at least one second container-based QoE measurement report indicating the second network slice from a start of the QoE session to an end of the QoE session.22.The terminal device of claim 21, wherein the at least one second QoE measurement report includes at least one of the following:a first flag indicating the network slice replacement has occurred; orcollected QoE measurement data for the first network slice.23.A network device comprising:at least one processor; andat least one memory storing instructions that, when executed by the at least one processor, cause the network device at least to:transmit, to a terminal device, an indication that a first network slice has been replaced with a second network slice for a network slice replacement; andreceive, from the terminal device, an updated quality of experience, QoE, measurement report message including at least information indicating occurrence of the network slice replacement.24.The network device of claim 23, wherein the updated QoE measurement report message comprises a first slice identity (ID) of the first network slice and a second slice ID of the second network slice inside a container-based QoE measurement report.25.The network device of claim 23, wherein:the updated QoE measurement report message comprises a first slice ID of the first network slice; anda first flag indicating occurrence of the network slice replacement.26.The network device of claim 23, wherein:the updated QoE measurement report message comprises a first slice ID of the first network slice; andthe information of occurrence of the network slice replacement comprises a second slice ID of the second network slice outside a container-based QoE measurement report.27.The network device of claim 23, wherein:the updated QoE measurement report message comprises a first slice ID of the first network slice; andthe information of occurrence of the network slice replacement comprises a first flag indicating that the network slice replacement has occurred.28.The network device of claim 27, wherein the information of occurrence of the network slice replacement further comprises the first slice ID, a second slice ID of the second network slice, and mapping between the first slice ID and the second slice ID.29.A method comprising:receiving, from a network device, first information related to a network slice replacement indicating that a first network slice has been replaced with a second network slice;updating, a quality of experience, QoE, measurement report message, based on the first information for the network slice replacement; andtransmitting, to the network device, the updated QoE measurement report message including at least second information indicating occurrence of the network slice replacement.30.A method comprising:transmitting, to a terminal device, an indication that a first network slice has been replaced with a second network slice for a network slice replacement; andreceiving, from the terminal device, an updated quality of experience, QoE, measurement report message including at least information indicating occurrence of the network slice replacement.31.An apparatus comprising:means for receiving, from a network device, first information related to a network slice replacement indicating that a first network slice has been replaced with a second network slice;means for updating, a quality of experience, QoE, measurement report message, based on the first information for the network slice replacement; andmeans for transmitting, to the network device, the updated QoE measurement report message including at least second information indicating occurrence of the network slice replacement.32.An apparatus comprising:means for transmitting, to a terminal device, an indication that a first network slice has been replaced with a second network slice for a network slice replacement; andmeans for receiving, from the terminal device, an updated quality of experience, QoE, measurement report message including at least information indicating occurrence of the network slice replacement.33.A computer readable medium comprising program instructions that, when executed by an apparatus, cause the apparatus to perform at least the method of claim 29 or 30.
Citation Information
Patent Citations
METHOD AND NETWORK NODES TO MANAGE QoE MEASUREMENT COLLECTION DURING RELOCATION OR HANDOVER
CN110301151A
Wireless communication method, terminal device and network device
CN116438829A
Method and device for determining network slice in wireless communication system
WO2023191460A1
Qoe report continuity with slice remapping
WO2024119439A1