WO2016020000A1 - Signalisation d'un décalage de numéro de trame système - Google Patents

Signalisation d'un décalage de numéro de trame système Download PDF

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Publication number
WO2016020000A1
WO2016020000A1 PCT/EP2014/066966 EP2014066966W WO2016020000A1 WO 2016020000 A1 WO2016020000 A1 WO 2016020000A1 EP 2014066966 W EP2014066966 W EP 2014066966W WO 2016020000 A1 WO2016020000 A1 WO 2016020000A1
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WO
WIPO (PCT)
Prior art keywords
frame number
network node
system frame
number offset
terminal device
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Ceased
Application number
PCT/EP2014/066966
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English (en)
Inventor
Yan Ji ZHANG
Yang Liu
Tero Henttonen
Woonhee Hwang
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Nokia Solutions and Networks Oy
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Nokia Solutions and Networks Oy
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Priority to PCT/EP2014/066966 priority Critical patent/WO2016020000A1/fr
Publication of WO2016020000A1 publication Critical patent/WO2016020000A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/20—Interfaces between hierarchically similar devices between access points

Definitions

  • the invention relates to the field of cellular communication systems and, particularly, signalling of system frame number offset.
  • a communication system may be seen as a facility that enables communication sessions between two or more nodes such as fixed or mobile communication devices, access points such as nodes, base stations, servers, hosts, machine type servers, routers, and so on.
  • a communication system and compatible communicating devices typically operate in accordance with a given standard or specification which sets out what the various entities associated with the system are permitted to do and how that should be achieved.
  • the standards, specifications and related protocols may define the manner how communication devices communicate with the access points, how various aspects of the communications are implemented and how the devices and functionalities thereof are configured.
  • An example of cellular communication systems is an architecture that is being
  • LTE long-term evolution
  • LTE advanced long-term evolution advanced
  • UMTS universal mobile telecommunications system
  • eNB enhanced node-Bs
  • Figure 1 is illustrates a wireless communication system to which embodiments of the invention may be applied;
  • Figure 2 illustrates a signalling diagram of a procedure for exchanging dual connectivity capability information according to an embodiment of the invention
  • Figure 3 illustrates a signalling diagram of a procedure for secondary base station addition according to an embodiment of the invention
  • Figure 4 illustrates a signalling diagram of a procedure for updating system frame number offset information according to an embodiment of the invention
  • FIGS. 5-10 illustrate processes for frame number offset handling according to an embodiment of the invention
  • FIGS 1 1 and 12 illustrate blocks diagrams of apparatuses according to some embodiments of the invention.
  • a cellular communication system may comprise a radio access network comprising base stations disposed to provide radio coverage in a determined geographical area.
  • the base stations may comprise macro cell base stations 102 arranged to provide terminal devices 104, 106 with the radio coverage over a relatively large area spanning even over several square miles, for example.
  • small area cell base stations 100 may be deployed to provide terminal devices 104 with high data rate services.
  • Such small area cell base stations may be called micro cell base stations, pico cell base stations, or femto cell base stations.
  • the small area cell base stations typically have significantly smaller coverage area than the macro base stations 102.
  • the cellular communication system may operate according to specifications of the 3rd generation partnership project (3GPP) long term evolution (LTE) advanced or its evolution version.
  • 3GPP 3rd generation partnership project
  • LTE long term evolution
  • Dual connectivity in higher layer enhancements for small cells refers to a technique where the terminal device is simultaneously able to be connected with a master base station (e.g. a macro base station, abbreviated as MeNB) and a secondary base station (e.g. a small cell base station, abbreviated as SeNB) to achieve throughput and mobility robustness gains.
  • a master base station e.g. a macro base station, abbreviated as MeNB
  • SeNB small cell base station
  • the terminal device acquires MIB on PSCell to get SFN of SCG and to learn the offset between SFN on MCG and SFN on SCG (if any).
  • the SFN offset measured by UE may then be reported from UE to MeNB which may then report the offset to SeNB.
  • the SFN offset may be acquired by a network based mechanism and be conveyed to SeNB via an X2 procedure.
  • the overall signaling overhead and the latency may impact at least the initial establishment of the dual connectivity significantly.
  • SeNB may not get the SFN offset in time for configuring DRX.
  • additional SeNB modification procedure may be needed to inform the terminal device about the DRX configuration after SeNB gets the reported SFN offset.
  • Modern cellular communication systems are wideband systems where a large bandwidth may be scheduled to a single terminal device for the transmission of data.
  • the scheduled resources may be indicated in terms of physical resource blocks or frequency resource blocks.
  • Each frequency resource block has a determined bandwidth and a centre frequency and one or more frequency resource blocks may be scheduled to the terminal device at a time.
  • the frequency resource blocks scheduled to the terminal device may be contiguous and, thus, form a continuous scheduled band for the terminal device.
  • the resource blocks may be non-contiguous in which case the form a non-contiguous band fragmented into a plurality of smaller bands.
  • Figure 2 illustrates a signalling diagram illustrating a method for signalling dual
  • the network node may be a server computer or a host computer.
  • the server computer or the host computer may generate a virtual network through which the host computer communicates with the terminal device.
  • virtual networking may involve a process of combining hardware and software network resources and network functionality into a single, software-based administrative entity, a virtual network.
  • Network virtualization may involve platform virtualization, often combined with resource
  • Network virtualization may be categorized as external virtual networking which combines many networks, or parts of networks, into the server computer or the host computer. External network virtualization is targeted to optimized network sharing.
  • Virtual networking Another category is internal virtual networking which provides network-like functionality to the software containers on a single system. Virtual networking may also be used for testing the terminal device.
  • an additional IE of dual connectivity capability is exchanged between the macro base station and the secondary base station during a X2 setup procedure (steps 201 , 202).
  • the dual connectivity capability information may be exchanged during an eNB configuration update procedure, or obtained by O&M configuration.
  • the macro base station updates a corresponding NR in an
  • Figure 3 illustrates a signalling diagram illustrating a method for signalling system frame number offset parameters between a base station of a cellular communication system, e.g. base station 100 or 102, and a terminal device of the cellular communication system, e.g. the terminal device 104 or 106.
  • the procedure of Figure 3 may be carried out between the terminal device and an access node or, more generally, a network node.
  • the network node may be a server computer or a host computer.
  • the server computer or the host computer may generate a virtual network through which the host computer communicates with the terminal device.
  • virtual networking may involve a process of combining hardware and software network resources and network functionality into a single, software-based administrative entity, a virtual network.
  • Network virtualization may involve platform virtualization, often combined with resource virtualization.
  • Network virtualization may be categorized as external virtual networking which combines many networks, or parts of networks, into the server computer or the host computer. External network virtualization is targeted to optimized network sharing. Another category is internal virtual networking which provides network-like functionality to the software containers on a single system. Virtual networking may also be used for testing the terminal device.
  • the terminal device reports (step 301 ) a measurement result based on configured reporting criteria, if a quality of the cell belonging to eNB2 is better than a predefined threshold.
  • eNB1 checks (block 302) the corresponding NR in NRT of eNB2, wherein if there is a valid SFN offset available (e.g. a validity timer may be configured to assure that the SFN offset is still valid), eNB1 (as MeNB) may directly initiate the SeNB addition procedure towards eNB2 (step 308).
  • eNB1 requests (step 303) the terminal device to acquire SFN of the cell to be added by signaling an additional measurement configuration for the terminal device (RRCConnectionReconfiguration). This may be achieved by utilizing an existing measurement configuration for ANR or by adding an additional indicator to the measurement configuration.
  • the terminal device After receiving the measurement configuration from eNB1 , the terminal device starts (block 304) acquiring SFN offset by reading MIB of the requested cell, and responds the measurement configuration in step
  • step 306 the terminal device reports the measurement result including the SFN offset between PCell of eNB1 and the requested cell of eNB2. If the existing measurement configuration for ANR is used, UEs that are capable to support dual connectivity, report the SFN offset in addition to other ANR related parameters.
  • step 307 eNB1 updates NR with the reported SFN offset and optionally starts an associated timer.
  • step 308 if eNB1 (as MeNB) starts an SeNB addition procedure, eNB2 is able to get the SFN offset. Steps 303 to 307 do not necessarily need to happen during an SeNB addition procedure.
  • eNB may do so, but eNB may also decide to keep the valid SFN offset, for instance. Then eNB may trigger the SFN offset acquisition procedure at any time regardless of the SeNB addition process.
  • the use of the validity timer is optional, and the SFN offset may be valid as long as the offset value is available.
  • Figure 4 illustrates a signalling diagram illustrating a method for signalling updated system frame number offset parameters between a base station of a cellular communication system, e.g. base station 100 or 102, and a terminal device of the cellular communication system, e.g. the terminal device 104 or 106.
  • the procedure of Figure 4 may be carried out between the terminal device and an access node or, more generally, a network node.
  • the network node may be a server computer or a host computer.
  • the server computer or the host computer may generate a virtual network through which the host computer communicates with the terminal device.
  • virtual networking may involve a process of combining hardware and software network resources and network functionality into a single, software-based administrative entity, a virtual network.
  • Network virtualization may involve platform virtualization, often combined with resource virtualization.
  • Network virtualization may be categorized as external virtual networking which combines many networks, or parts of networks, into the server computer or the host computer. External network virtualization is targeted to optimized network sharing. Another category is internal virtual networking which provides network-like functionality to the software containers on a single system. Virtual networking may also be used for testing the terminal device.
  • eNB1 requests, in step 402, the terminal device to acquire the SFN offset of the cell corresponding to NR, by signaling an additional indicator when
  • eNB1 may request the terminal device to acquire the SFN offset of the cell corresponding to NR at any time based on other criteria regardless of the status of any validity timer for the SFN offset.
  • the terminal device may start (block 403) acquiring SFN by reading MIB of the indicated cell in the measurement configuration, and responds the measurement configuration in step 404. The order of steps 403 and 404 may be reversed.
  • the terminal device reports to eNB1 the measurement result including the SFN offset between PCell of eNB1 and the requested cell of eNB2.
  • eNB1 updates (block 406) NR with the reported SFN offset and optionally re-starts the associated timer.
  • an SeNB modification procedure is triggered to inform the updated SFN offset to eNB2.
  • eNB2 gets the accurate SFN offset during the initial SeNB addition procedure and periodically maintains the accurate SFN offset to keep the parameter configuration (DRX, measurement gap, etc.) aligned with eNB1 in the dual connectivity.
  • the SFN offset is determined via the ANR-like terminal device action where the terminal device reads and reports the SFN difference to eNB1 or eNB2.
  • the management of an existing NRT is enhanced to assist the acquisition of the SFN offset from the terminal device (while in an existing ANR procedure, eNB manages NRT to maintain the key parameters of the neighboring cell).
  • the SFN offset is reported by the terminal device such that SeNB gets the SFN offset reliably and timely to keep the configuration of the required parameters aligned with MeNB and to avoid unnecessary message exchanges over X2 and Uu interfaces.
  • an additional measurement configuration (indicator) is established during the RRC procedure to request the SFN offset of the requested cell. The SFN offset is added in the measurement report of the requested cell.
  • a dual connectivity capability parameter is added for NR of NRT maintained in eNB.
  • the SFN offset parameter, and optionally an associated timer parameter, are only needed for a dual connectivity capable eNB.
  • eNBs may exchange the dual connectivity capability via the X2 procedure.
  • MeNB updates the corresponding NR in an NRT table based on the received information.
  • the terminal device reports the measurement result based on the configured reporting criteria, if a quality of the cell belonging to SeNB is better than a predefined threshold.
  • MeNB checks the corresponding NR in NRT of SeNB, wherein if there is a valid SFN offset available and an associated timer is still running, MeNB may directly initiate the SeNB addition procedure towards the SeNB.
  • MeNB requests the terminal device to acquire SFN of the cell to be added by signaling an additional indicator when configuring the measurement for the terminal device (RRCConnectionReconfiguration).
  • the terminal device after receiving the measurement configuration from eNB, the terminal device starts acquiring SFN by reading MIB of the configured cell. In an embodiment, the terminal device reports the measurement result including the SFN offset between PCell of MeNB and the requested cell of SeNB.
  • MeNB updates NR with the reported SFN offset and optionally starts an associated timer.
  • an SeNB addition procedure is triggered by which SeNB is able to get the SFN offset.
  • the SFN offset may be regularly updated to maintain synchronization accuracy, e.g. at predetermined time intervals, or the updating may be triggered by MeNB internal decisions.
  • the updating may be
  • MeNB may decide the timer based on the practical synchronization situation.
  • MeNB when the SFN offset associated timer of NR in NRT expires, MeNB requests the terminal device to acquire the SFN offset of the cell corresponding to NR, by signaling an additional indicator when configuring the measurement for the terminal device (RRCConnectionReconfiguration).
  • the terminal device after receiving the measurement configuration from the base station, the terminal device may start acquiring SFN by reading MIB of the indicated cell in the measurement configuration.
  • the terminal device reports the measurement result including the SFN offset between PCell of MeNB and the requested cell of SeNB.
  • MeNB updates NR with the reported SFN offset and re-starts the associated timer.
  • an SeNB modification procedure is triggered to inform the updated SFN offset.
  • MeNB manages the established parameters (the dual connectivity capability parameter, the SFN offset, and optionally an associated timer) of NR in NRT for a specific dual connectivity capable base station.
  • the associated timer is (re)started when the reported SFN offset is received from the terminal device.
  • the base station if there is no valid SFN offset or the SFN offset associated timer expires for a specific NR, the base station requests the SFN offset for a specific cell from the terminal device by setting the optional indicator in the measurement configuration.
  • MeNB initiates an SeNB addition procedure towards SeNB, for initiating the dual connectivity feature for the terminal device including the SFN offset.
  • MeNB initiates an SeNB modification procedure for updating the SFN offset towards SeNB.
  • the terminal device acquires SFN by reading MIB from the requested cell and includes the SFN offset between this cell and PCell of MeNB in the measurement report.
  • the SFN offset may reliably and efficiently be acquired and reported to the network (to SeNB) without causing extra signalling overhead and without additional delay when configuring the dual connectivity features.
  • the base station may exchange the additional IE of dual connectivity capability with the secondary base station during a X2 setup procedure (steps 501 , 502), wherein the base station eNB1 (e.g. MeNB) transmits an X2 setup request to eNB2 (e.g. SeNB) (block 501 ) and receives a X2 setup response from eNB2 (block 502).
  • eNB1 e.g. MeNB
  • eNB2 e.g. SeNB
  • a X2 setup response from eNB2 block 502
  • the dual connectivity capability information may be exchanged during an eNB configuration update procedure, or obtained by O&M configuration.
  • the macro base station updates (block 503) a corresponding NR in an NRT table based on the received information, but the SFN offset is not available for this eNB2 yet.
  • the base station may exchange the additional IE of dual connectivity capability with the macro base station during a X2 setup procedure (steps 601 , 602), wherein the base station eNB2 receives an X2 setup request from eNB1 (block 601 ) and transmits a X2 setup response to eNB2 (block 602).
  • the dual connectivity capability information may be exchanged during an eNB configuration update procedure, or obtained by O&M configuration.
  • the terminal device reports (block 701 ) a measurement result (transmits a measurement report) based on configured reporting criteria, if a quality of the cell belonging to eNB2 is better than a predefined threshold.
  • the terminal device receives an additional indicator for measurement configuration (RRCConnectionReconfiguration) from eNB1 (block 702).
  • the terminal device starts (block 703) acquiring SFN offset by reading MIB of the configured cell based on instructions received in step 702, and responds the measurement configuration in step 704.
  • the order of steps 703 and 704 may be reversed.
  • the terminal device reports the measurement result including the SFN offset between PCell of eNB1 and the requested cell of eNB2.
  • An eNB2 addition procedure is triggered by which eNB2 is able to get the SFN offset (block 706).
  • the base station receives (block 801 ) a measurement result (a measurement report) from the terminal device.
  • eNB1 checks (block 802) the corresponding NR in NRT of eNB2, wherein if there is a valid SFN offset available, eNB1 may directly initiate the eNB2 addition procedure towards eNB2 (block 807). If there is no valid SFN offset available (e.g. the validity timer has expired), eNB1 requests (block 803, transmits
  • the terminal device to acquire SFN of the cell to be added by signaling an additional measurement configuration to the terminal device.
  • the base station receives the measurement result including the SFN offset between PCell of eNB1 and the requested cell of eNB2 from the terminal device.
  • An eNB2 addition procedure is triggered by which eNB2 is able to get the SFN offset (block 807).
  • eNB1 requests (block 902) the terminal device to acquire the SFN offset of the cell corresponding to NR, by signaling an additional indicator when configuring the measurement for the terminal device (RRCConnectionReconfiguration).
  • the base station receives from the terminal device the measurement result including the SFN offset between PCell of eNB1 (block 904) and the requested cell of SeNB (block 903).
  • eNB1 updates (block 905) NR with the reported SFN offset and re-starts the associated timer.
  • the SeNB modification procedure is triggered to inform the updated SFN offset to SeNB.
  • the terminal device After receiving (block 1001 ) the measurement configuration (RRCConnectionReconfiguration) from the base station, the terminal device starts (block 1002) acquiring SFN by reading MIB of the indicated cell in the measurement
  • the terminal device reports to eNB1 the measurement result including the SFN offset between PCell of eNB1 and the requested cell of eNB2 in step 1004.
  • the SeNB modification procedure is triggered to inform the updated SFN offset to SeNB.
  • any of Figures 5 to 10 may be exclusive to small area cell base stations, e.g. the base station 100 may carry out the embodiments of Figure 2 to 10 but the macro base station 102 may not.
  • An embodiment provides an apparatus comprising at least one processor and at least one memory including a computer program code, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the apparatus to carry out the procedures of the above-described base station or the network node.
  • the at least one processor, the at least one memory, and the computer program code may thus be considered as an embodiment of means for executing the above- described procedures of the base station or the network node.
  • Figure 1 1 illustrates a block diagram of a structure of such an apparatus.
  • the apparatus may be comprised in the base station or the network node, e.g. the apparatus may form a chipset or a circuitry in the base station or the network node. In some embodiments, the apparatus is the base station or the network node.
  • the apparatus comprises a processing circuitry 10 comprising the at least one processor.
  • the processing circuitry 10 may comprise an NRT management circuitry 16 configured to check and update NRT with the SFN offset.
  • An X2 setup circuitry 18 may be configured to exchange dual connectivity information.
  • a message generator 12 may be configured to generate ta RRCConnectionReconfiguration message.
  • the processing circuitry 10 may comprise the circuitries 12 to 18 as sub-circuitries, or they may be considered as computer program modules executed by the same physical processing circuitry.
  • the memory 20 may store one or more computer program products 24 comprising program instructions that specify the operation of the circuitries 12 to 18.
  • the memory 20 may further store a database comprising definitions for the selection of the link adaptation scheme, for example.
  • the apparatus may further comprise a communication interface 22 providing the apparatus with radio communication capability with the terminal devices.
  • the communication interface 22 may comprise a radio communication circuitry enabling wireless communications and comprise a radio frequency signal processing circuitry and a baseband signal processing circuitry.
  • the baseband signal processing circuitry may be configured to carry out the functions of the transmitter and/or the receiver, as described above in connection with Figures 1 to 10.
  • the communication interface may be connected to a remote radio head comprising at least an antenna and, in some embodiments, radio frequency signal processing in a remote location with respect to the base station.
  • the communication interface 22 may carry out only some of radio frequency signal processing or no radio frequency signal processing at all.
  • the connection between the communication interface 22 and the remote radio head may be an analogue connection or a digital connection.
  • An embodiment provides another apparatus comprising at least one processor and at least one memory including a computer program code, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the apparatus to carry out the procedures of the above-described terminal device.
  • the at least one processor, the at least one memory, and the computer program code may thus be considered as an embodiment of means for executing the above-described procedures of the terminal device.
  • Figure 12 illustrates a block diagram of a structure of such an apparatus.
  • the apparatus may be comprised in the terminal device, e.g. it may form a chipset or a circuitry in the terminal device. In some embodiments, the apparatus is the terminal device.
  • the apparatus comprises a processing circuitry 50 comprising the at least one processor.
  • the processing circuitry 50 may comprise a communication controller circuitry 54 configured to extract control messages received from a serving base station, to acquire RRCConnectionControl message, and to control the terminal device to transmit or receive data between the base station in the scheduled communication resources.
  • the apparatus may further comprise an SFN offset selector configured to read SFN offset based on based on measurement control instructions.
  • the processing circuitry 50 may comprise the circuitries 52, 54 as sub-circuitries, or they may be considered as computer program modules executed by the same physical processing circuitry.
  • the memory 60 may store one or more computer program products 64 comprising program instructions that specify the operation of the circuitries 52, 54.
  • the apparatus may further comprise a communication interface 62 providing the apparatus with radio communication capability with base stations of one or more cellular
  • the communication interface 62 may comprise a radio communication circuitry enabling wireless communications and comprise a radio frequency signal processing circuitry and a baseband signal processing circuitry.
  • the baseband signal processing circuitry may be configured to carry out the functions of the transmitter and/or the receiver, as described above in connection with Figures 1 to 12.
  • circuitry refers to all of the following: (a) hardware- only circuit implementations such as implementations in only analog and/or digital circuitry; (b) combinations of circuits and software and/or firmware, such as (as
  • circuitry (i) a combination of processor(s) or processor cores; or (ii) portions of processor(s)/software including digital signal processor(s), software, and at least one memory that work together to cause an apparatus to perform specific functions; and (c) circuits, such as a microprocessor(s) or a portion of a microprocessor(s), that require software or firmware for operation, even if the software or firmware is not physically present.
  • circuitry such as a microprocessor(s) or a portion of a microprocessor(s), that require software or firmware for operation, even if the software or firmware is not physically present.
  • circuitry would also cover, for example and if applicable to the particular element, a baseband integrated circuit, an application-specific integrated circuit (ASIC), and/or a field-programmable grid array (FPGA) circuit for the apparatus according to an embodiment of the invention.
  • ASIC application-specific integrated circuit
  • FPGA field-programmable grid array
  • the processes or methods described above in connection with Figures 1 to 12 may also be carried out in the form of one or more computer process defined by one or more computer programs.
  • the computer program shall be considered to encompass also a module of a computer programs, e.g. the above-described processes may be carried out as a program module of a larger algorithm or a computer process.
  • the computer program(s) may be in source code form, object code form, or in some intermediate form, and it may be stored in a carrier, which may be any entity or device capable of carrying the program.
  • Such carriers include transitory and/or non-transitory computer media, e.g. a record medium, computer memory, read-only memory, electrical carrier signal, telecommunications signal, and software distribution package.
  • the computer program may be executed in a single electronic digital processing unit or it may be distributed amongst a number of processing units.
  • the present invention is applicable to cellular or mobile communication systems defined above but also to other suitable communication systems.
  • the protocols used, the specifications of cellular communication systems, their network elements, and terminal devices develop rapidly. Such development may require extra changes to the described embodiments. Therefore, all words and expressions should be interpreted broadly and they are intended to illustrate, not to restrict, the embodiment. It will be obvious to a person skilled in the art that, as technology advances, the inventive concept can be implemented in various ways.
  • the invention and its embodiments are not limited to the examples described above but may vary within the scope of the claims. List of abbreviations

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
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Abstract

L'invention concerne un nœud de réseau qui stocke des informations de capacité de connectivité double sur une cellule, un décalage de numéro de trame système pour chaque cellule voisine à capacité de connectivité double et, éventuellement, un temporisateur de décalage de numéro de trame système. Si nécessaire, le nœud de réseau demande (303) à un dispositif terminal de fournir un décalage de numéro de trame système pour une station de base secondaire et acquiert (306), du dispositif terminal, un message de rapport comprenant des informations indiquant le décalage de numéro de trame système mis à jour pour la station de base secondaire.
PCT/EP2014/066966 2014-08-07 2014-08-07 Signalisation d'un décalage de numéro de trame système Ceased WO2016020000A1 (fr)

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US11109303B2 (en) 2016-08-17 2021-08-31 Huawei Technologies Co., Ltd. System information broadcasting method and apparatus, and system information receiving method and apparatus
EP3471462B1 (fr) * 2016-08-17 2022-10-05 Huawei Technologies Co., Ltd. Procédé et système de synchronisation avec une cellule qui ne diffuse pas d'informations système
EP3742801A4 (fr) * 2018-06-21 2021-07-21 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Procédé d'interaction de capacités et dispositif associé
US11523312B2 (en) 2018-06-21 2022-12-06 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Capability interaction method and related device
JP2020077990A (ja) * 2018-11-08 2020-05-21 アンリツ株式会社 移動端末試験装置、移動端末試験システム及びデュアルコネクティビティの試験方法
CN113412641A (zh) * 2019-02-08 2021-09-17 株式会社Ntt都科摩 用户装置
CN113412641B (zh) * 2019-02-08 2024-05-17 株式会社Ntt都科摩 用户装置

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