baber/WOPTO huggingface dataset:
Patent WO-2013075280-A1 (WO)
Title: Procédé et système d'estimation de la masse d'un véhicule
Inventor: FENG YUAN
IPC: G01G19/08
Filed: 2011-11-22
Abstract: Selon la présente invention, dans un procédé et un système d'estimation de masse d'un véhicule, la vitesse des roues, le couple d'entraînement et l'accélération longitudinale du véhicule sont obtenus, et une estimation de la masse du véhicule est calculée à l'aide d'un groupe d'équations d'estimation qui comprend la vitesse des roues, le couple d'entraînement et l'accélération longitudinale en tant que paramètres entrés, et la masse du véhicule et la résistance à l'entraînement du véhicule en tant que variables. Des seuils inférieur et supérieur sont pris en compte dans le procédé de calcul de l'estimation de la masse du véhicule.
Patent WO-2013075330-A1 (WO)
Inventor: REN BO
IPC: H04W16/20
Filed: 2011-11-25
Abstract: L'invention concerne un procédé pour sélectionner précisément un point en phase de planification de déploiement de point d'accès sans fil Wi-Fi et un modèle. Le procédé consiste à : collecter des données statistiques de chaque zone candidate dans une période de statistiques; évaluer les données statistiques de chaque zone candidate en fonction d'un indicateur de classe de service afin d'obtenir un score d'évaluation de service; évaluer les données statistiques de chaque zone candidate en fonction d'une classe de comportement d'utilisateur et/ou d'une classe de terminal afin d'obtenir un score d'évaluation de comportement d'utilisateur et/ou un score d'évaluation de taux de pénétration de terminal; effectuer un calcul de résumé en fonction du score d'évaluation de chaque classe correspondant à chaque zone candidate afin d'obtenir une valeur de chaleur de chaque zone candidate; et prendre une zone candidate dont la valeur de chaleur est supérieure à une valeur seuil à titre de zone de point d'accès sans fil Wi-Fi.
Patent WO-2012083841-A1 (WO)
Title: 频道切换方法、终端及系统
Inventor: ZHOU MAOLIN
IPC: H04N7/24
Filed: 2011-12-20
Abstract: 本发明涉及一种频道切换方法、终端及系统，所述方法包括：播放终端在局域网内发送宣告消息获取可提供频道节目内容服务的缓存终端列表；当播放终端收到频道切换播放命令时，通过缓存终端列表中的缓存终端进行频道切换。本发明基于UPnP的SSDP协议，播放终端从提供服务的缓存终端迅速接收频道节目码流启动播放，加快频道切换速度，提升了IPTV服务质量。同时，使缓存终端不会向播放终端发送多余的媒体包，不造成网络资源浪费便能实现媒体接收方式的无缝切换；另外，本发明还可以实现丢包重传功能，由此可降低IPTV对网络质量的依赖性，提升了用户在丢包情况下的视频质量。
Patent WO-2013078781-A1 (WO)
Title: 一种新型电锤
Inventor: WANG WENJIANG
IPC: B23B45/16
Filed: 2012-01-13
Abstract: 一种新型电锤，包括机身（23），所述机身内安装驱动电机、齿轮传动机构、转动套（39）和冲击机构（42），所述驱动电机与齿轮传动机构的输入端连接，所述齿轮传动机构的输出端与转动套（39）连接，所述电动工具还包括钻夹头（22），所述钻夹头（22）呈中空状，所述钻夹头（22）通过固定连接装置安装在所述转动套（39）上，所述钻夹头（22）设有供电锤钻头穿过的贯通孔，所述电锤钻头安装在所述转动套（39）内，所述冲击机构（42）位于所述电锤钻头的后方；所述钻夹头外壁设有夹持电钻钻头的夹持件。该新型电锤操作方便、舒适、打孔精度较高、加工效率较高的新型电锤。
Patent WO-2012097719-A1 (WO)
Title: Headset
Inventor: VIDSTROM MATS JOSEF
IPC: H04R5/033
Filed: 2012-01-17
Abstract: The present invention is a headset, comprising: at least four loudspeakers and at least one frequency divider; at least two of the at least four loudspeakers are over-ear headphones, and at least two of the at least four loudspeakers are in-ear headphones; the at least two in-ear headphones are respectively provided with one or a plurality of sound transmission passage; the sound from the over-ear headphones can transmit through the sound transmission passages from one side to the other side of the in-ear headphones; the at least one frequency divider transmits bass signals to the at least two on-ear headphones and transmits mid-range and treble signals to the at least two in-ear headphones via wired and/or wireless methods. The headset of the present invention solves the problem of headsets in the prior art being unable to better play the treble, mid-range and bass signals, and has low production costs and is easily accepted by ordinary consumers.
Patent WO-2012163144-A1 (WO)
Inventor: MIAO LEI
IPC: G10L19/00
Filed: 2012-03-22
Abstract: 一种音频信号编码方法和装置，方法包括：将音频信号分成高频音频信号和低频音频信号（101）；利用低频音频信号特征对低频音频信号用相应的低频编码方式编码（102）；根据低频编码方式和/或音频信号的特征，择带宽扩展模式对高频音频信号编码（103）。
Patent WO-2013159368-A1 (WO)
Title: 数据叠加显示合成方法和系统及显示设备
Inventor: WANG ZONG
IPC: H04N21/44
Filed: 2012-05-02
Abstract: 一种数据叠加显示合成方法和系统及显示设备。所述方法包括：接收第一数据的输入，解码后进行缓冲存储；接收第二数据的输入并解码，对第二数据中的对象进行解析，将第二数据分割成多个分组数据，缓冲存储第二数据的各分组数据；确定第二数据的各分组数据与第一数据之间的各种对应关系；根据所述对应关系，选取相应的第二数据的分组数据与第一数据进行叠加合成处理；对合成后的数据进行显示。本发明除了可以实现简单的多视频流显示之外，还可以利用多个视频流中的对象或元素进行组合，得到全新的图像数据进行显示，满足了用户对画面处理的特殊需求，扩展了多子流应用的使用方式。
Patent WO-2013185407-A1 (WO)
Title: Display panel and manufacturing method thereof
Inventor: LIU YAWEI
IPC: G02F1/1362
Filed: 2012-07-25
Abstract: A display panel comprises a substrate (110), pixels (120), active components (140), and storage capacitors (150). The active component (140) and the storage capacitor (150) are disposed in the pixel (120). The storage capacitor (150) has a first storage electrode (151) and a second storage electrode (152). The second storage electrode (152) is formed in a recess of an insulation layer, and is aligned with the first storage electrode (151) from the above. Also provided is a manufacturing method of a display panel, in which a part of an insulation layer above a first storage electrode (151) is removed to form a recess.
Patent WO-2013020517-A1 (WO)
Title: Procédé de mobilité de réseau hétérogène
Inventor: CHEN YIH-SHEN
IPC: H04W36/04
Filed: 2012-08-10
Abstract: L'invention porte sur des procédés pour une mobilité de réseau hétérogène améliorée. Selon un premier nouvel aspect, la dimension de cellule d'une cellule cible est considérée lors de la détermination de la valeur TTT. Dans un mode de réalisation, une valeur de temps pour déclencher (TTT) pico spécifique est configurée. Lorsque la cellule cible à mesurer est une pico cellule, une valeur TTT pico spécifique est appliquée. Selon un second nouvel aspect, une estimation d'état de mobilité (MSE) précise est obtenue par prise en compte de l'effet de la dimension de cellule. Dans un mode de réalisation, lorsque la cellule de comptage change, un changement de cellule de/vers une petite cellule serait compté dans une moindre mesure qu'un changement de cellule entre des cellules importantes. L'UE utilise des paramètres effectifs pour une évaluation de mesure, par application d'une meilleure estimation d'état de vitesse à mise à l'échelle de vitesse et par application d'une différentiation de paramètres qui peut être dépendante de la dimension de cellule.
Patent WO-2013037318-A1 (WO)
Title: 一种数据处理方法和数据处理节点
Inventor: LE LIFENG
IPC: H04L1/22
Filed: 2012-09-17
Abstract: 本发明公开了一种数据处理方法和数据处理节点，用以在服务节点处于过载状态时对用户数据进行处理，减轻服务节点负载。备份节点中对应存储有服务节点管辖的各用户的用户标识和用户信息，所述用户信息中包括用户数据和用于标识该用户数据最近一次被修改的版本标识，所述数据处理方法包括：所述服务节点处于过载状态时，所述备份节点接收所述服务节点的上游节点发送的会话建立请求，所述会话建立请求中携带有需要建立会话的用户的第一用户标识；所述备份节点修改所述第一用户标识对应的用户信息中的用户数据；并更新所述第一用户标识对应的用户信息中的版本标识。
Patent WO-2014047815-A1 (WO)
Title: Methods for performing link adaptation and related base stations
Inventor: LIU JINHUA
IPC: H04W72/04
Filed: 2012-09-26
Abstract: The present disclosure relates to a link adaptation scheme. In one embodiment, there provides a method for performing link adaptation in an uplink subframe for a first cell, the method comprising: obtaining interference to the uplink subframe of the first cell from at least one neighboring cell's downlink subframe occupying a time interval same as the uplink subframe; determining whether the obtained interference exceeds a predetermined threshold; and applying to the uplink subframe a first link adaptation loop when the obtained interference exceeds the predetermined threshold.
Patent WO-2014047858-A1 (WO)
Title: Array antenna and base station
Inventor: BI QI
IPC: G06F19/00
Filed: 2012-09-28
Abstract: Provided are an array antenna and a base station. The array antenna comprises a plurality of linear arrays, uplink and downlink duplexers, and a shaped network. Each linear array is a dual-polarized linear array. The input end of the shaped network is coupled with the downlink output end of a radio frequency unit, and two output ends are respectively coupled with the downlink signal transmitting ends of two uplink and downlink duplexers; the transceiving sharing ends of two uplink and downlink duplexers are respectively coupled with linear arrays that have the same polarization in two adjacent linear arrays, and two adjacent linear arrays with the same polarization form a 65-degree sectored horizontal beam on a downlink link through the shaped network; the uplink signal output ends of two uplink and downlink duplexers are coupled with the uplink input end of the radio frequency unit; in the plurality of linear arrays, linear arrays that are not coupled with uplink and downlink duplexers are all coupled with the uplink input end of the radio frequency unit, so that a transmitting antenna can form a sectored horizontal beam with a 65-degree half power beam width on a downlink link.
Patent WO-2014071574-A1 (WO)
Title: Module, système et procédé de commutation de modules
Inventor: XU YE
IPC: H04L69/40
Filed: 2012-11-07
Abstract: La présente invention concerne des modules, des systèmes et un procédé de commutation de modules. Le module possède des états de fonctionnement commutables, et comprend : une première unité de commutation, servant à commuter le module entre un premier état de fonctionnement et un deuxième état de fonctionnement ; une première interface, pour la commutation entre l'envoi de signaux à un autre module qui possède des états de fonctionnement commutables et la réception de signaux de l'autre module, la première interface envoyant un premier signal à l'autre module lorsque le module est dans le premier état de fonctionnement, envoyant un deuxième signal à l'autre module lorsque le module doit commuter sur le deuxième état de fonctionnement, et recevant des signaux de l'autre module lorsque le module est dans le deuxième état de fonctionnement ; et une deuxième interface, pour la communication avec l'autre module. Lorsque la deuxième interface reçoit de l'autre module une réponse au deuxième signal, la première unité de commutation commute le module sur le deuxième état de fonctionnement. Le mode de réalisation de la présente invention permet d'améliorer la fiabilité de la commutation des modules.
Patent WO-2014079034-A1 (WO)
Title: Control circuit and control method for inter-integrated circuit bus
Inventor: ZHAN YUEXIANG
IPC: G06F13/38
Filed: 2012-11-23
Abstract: The present invention relates to a control circuit and control method for an I2C bus. The circuit comprises: an I2C master device and a plurality of I2C device groups. An I2C device group comprises an I2C drive device and a plurality of I2C slave devices. An I2C interface of the I2C master device is connected to the I2C drive device, and an IO interface thereof is connected to an enabling end of the I2C drive device. One end of the I2C drive device is connected to the plurality of I2C slave devices. The I2C master device sends an enabling signal to the I2C drive device. The I2C master device sends data to the I2C drive device in an enabled state, and after processing the data, the I2C drive device sends same to each I2C slave device. If the device address of an I2C slave device is the same as an address code, the I2C slave device communicates with the I2C master device. Thus, the present invention realizes that the I2C master device controls the ON or OFF state of each I2C driver, and improves the reliability of the control circuit for the I2C bus.
Patent WO-2014012314-A1 (WO)
Title: Device for processing light guide plate template and method for processing same
Inventor: ZHOU FENG
IPC: G02F1/133
Filed: 2012-11-23
Abstract: Disclosed is a device for processing a light guide plate template and a method for processing same, the processing device comprising a rotatable workbench (1), a polishing component (2) installed on the workbench (1) and a clamping component (3) for clamping the light guide plate template, wherein in the state of the light guide plate template being clamped by the clamping component (3), the rotating workbench (1) drives the polishing component (2) to polish a crater structure on the light guide plate template. The crater structure on the light guide plate template is removed by using the processing device for the light guide plate template, so that the retardation from which plastic particles suffer in a mould cavity during injection moulding is reduced, thus the mesh point formed by injection moulding is more saturated, and when releasing the mould, the phenomena of mould sticking, mould drawing and the like are reduced, such that the final dimension precision and mesh point precision of the light guide plate are improved.
Patent WO-2013083090-A1 (WO)
Title: Method and device for power control
Inventor: LIU QIONG
IPC: H04W52/24
Filed: 2012-12-07
Abstract: Embodiments of the present invention relate to the field of wireless communications. Disclosed are a method and device for power control, invented for reducing pressure on the power of an air interface of a base station, and for ensuring the stability of network environment. The method comprises: determining if the received total wideband power (RTWP) of the air interface exceeds a first congestion threshold configured; when the RTWP of the air interface exceeds the first congestion threshold configured, issuing to a radio network controller (RNC) a congestion indication, where the congestion indication is used for indicating to the RNC that upward adjustment is prohibited for a target signal-to-interference ratio (SIR); receiving the target SIR transmitted by the RNC; downward adjusting the target SIR transmitted by the RNC; and notifying, on the basis of the target SIR downward adjusted, a user equipment (UE) to reduce transmission power. The present invention is primarily applicable in the field of power control.
Patent WO-2014127496-A1 (WO)
Inventor: FAN MINHUA
IPC: A61K31/4439
Filed: 2013-04-15
Abstract: A pantoprazole sodium freeze-dry preparation and a preparing method thereof. The freeze-dry preparation is prepared by dissolving pantoprazole sodium in water for injection, adjusting the PH value to be 9.5 to 11.5 by using a PH regulator, and performing a freeze-dry process. During the preparing process, the water for injection is first cooled, sufficient nitrogen is filled in and a metal chelator is added, then the PH value is regulated, and pantoprazole sodium is added, which fully ensures that the pantoprazole sodium may not be oxidized or degraded during the preparing process and improves temperature stability of the pantoprazole sodium freeze-dry preparation.
Patent WO-2013131415-A1 (WO)
Title: Sarong transportation apparatus
Inventor: SHAN ZHONGDE
IPC: B66C17/00
Filed: 2013-01-15
Abstract: A sarong transportation apparatus comprises a first beam (100), arranged on a guide rail (400) and capable of moving along the guide rail (400); a second beam (200), flexibly arranged on the first beam (100) and capable of moving along the first beam (100); a mechanical gripper (300), arranged on the second beam (200) and comprising a telescopic mechanism (310) and a grabbing mechanism (320) connected with the telescopic mechanism (310); a position detection unit, used for detecting positions of the first beam (100) and the second beam (100); and a control device, used for controlling movement of the first beam (100), the second beam (200), and the mechanical gripper (300) according to position information detected by the position detection unit. By means of the control device and the mechanical gripper, the sarong transportation apparatus automatically transports sarongs, thereby improving the production efficiency and safety of the dye production and reducing the labor cost.
Patent WO-2014117365-A1 (WO)
Title: Making a computer display more expressive
Inventor: ZHU XIAOFENG
IPC: G06F17/30
Filed: 2013-01-31
Abstract: According to aspects of the present disclosure, certain areas of the display screen are logically considered to be "privileged." For example, a user may run a utility program and selected areas of the wallpaper to be privileged. In another example, a utility scans the wallpaper looking for, say, a face or text and marks the location around the face or text as privileged. In any case, when an icon (or other visual information) needs to be placed on the display screen, the icon is preferentially placed at a location that does not overlap with the privileged areas. If no non-privileged area is available, then an alert can be sent to the user.
Patent WO-2013127354-A1 (WO)
Title: 一种合成左旋吡喹酮的方法
Inventor: QIAN MINGXIN
IPC: C12P41/00
Filed: 2013-02-28
Abstract: 提供了一种制备左旋吡喹酮的方法，其利用酶的高度立体、位点、区域选择性来催化化学合成的外消旋体或衍生物中的某一对映体进行动态动力学拆分，生产光学纯手性左旋吡喹酮中间体，进一步通过各种成熟、具有较高收率的常规有机化学反应得到左旋吡喹酮。该方法制备的左旋吡喹酮纯度可达98%以上。
Patent WO-2014063459-A1 (WO)
Title: Concrete formwork fixing apparatus
Inventor: XU JINJU
IPC: B28B7/26
Filed: 2013-03-11
Abstract: A concrete formwork fixing apparatus comprises a corner plate and a locking member. The corner plate has a first side plate and a second side plate perpendicularly connected, and a corner portion is formed at the joint of the first side plate and the second side plate. An outer surface of the second side plate is provided with two convex ribs, and the two convex ribs are respectively parallel to an intersection line of the corner portion. The locking member comprises a rod piece and a spring bolt. One end of the rod piece is located outside the second side plate, and the other end of the rod piece passes through the second plate and extends from the two convex ribs, so as to mount the spring bolt. The two convex ribs are respectively provided with a notch which forms end portions of the spring bolt and are rotated out of the convex ribs. For the concrete formwork of the above apparatus, even though the concrete formwork is larger in dimensions, it can be ensured that the concrete formwork does not lean out, thereby facilitating concrete pouring and molding.
Patent WO-2013170716-A1 (WO)
Title: 铜铟合金的制备方法
Inventor: HU ZHIXIANG
IPC: C22C1/02
Filed: 2013-05-08
Abstract: 一种铜铟合金的制备方法，包括以下步骤：将单质铜和单质铟按重量比装入反应容器内，将反应容器抽真空，将抽真空后的反应容器密封，将密封后的反应容器放入加热炉内进行加热至铜铟二元合金固溶相温度以上，使得反应容器内的单质铜和单质铟进行合成反应，以获得熔融的铜铟合金液；合成反应结束后直接从加热炉内取出反应容器并使反应容器急冷，以使反应容器内的熔融的铜铟合金液急冷成型为铜铟合金块；以及将反应容器破开，取出铜铟合金块。该制备工艺所制备的铜铟合金性能方面均得以改善。
Patent WO-2013174256-A1 (WO)
Inventor: JHENG YU-SYUAN
IPC: H04W48/00
Filed: 2013-05-22
Abstract: A method of applying a network forbidden list for enhanced service recovery in mobile communication networks is provided. In a first embodiment, upon receiving an error cause for a RAT in a selected network, a UE stores a PLMN ID, the RAT information, and the error cause as an entry in the forbidden list. The UE will not select to the RAT of the network stored in the forbidden list until the PLMN/RAT entry is removed from the forbidden list. In a second embodiment, upon receiving an error cause in a selected network, a UE stores a PLMN ID, the error cause, and a timer value as an entry in the forbidden list. The UE will not select to the network stored in the forbidden list until the timer associated with the PLMN ID is expired.
Patent WO-2014075436-A1 (WO)
Title: Cesium boric silicon compound, nonlinear optical crystal of cesium boric silicon, and preparation method therefor and use thereof
Inventor: PAN SHILIE
IPC: C30B29/22
Filed: 2013-05-31
Abstract: The present invention relates to a cesium boric silicon compound, a nonlinear optical crystal of cesium boric silicon, and a preparation method therefor and a use thereof. The cesium boric silicon compound has a chemical formula of Cs 2 B 4 SiO 9  and a molecular weight of 481.15, and is prepared using a solid phase method. The nonlinear optical crystal of the cesium boric silicon compound has a chemical formula of Cs 2 B 4 SiO 9  and a molecular weight of 481.15, does not have a center of symmetry, belongs to the tetragonal system with space group  I 
 4̅  and unit-cell parameters a=6.731(3)Å, c=9.871(9)Å and V=447.2(5)Å 3 , and has a wide transmittance range. The shortest ultraviolet cutoff edge is smaller than 190 nm, the frequency doubling effect of the crystal is 4.6 KDP, and the crystal is grown by a high-temperature solution spontaneous crystallization method and a flux method. The crystal has advantages of high growth rate, being transparent and inclusion free, low cost, having a wide transmittance range, high hardness, good mechanical property, being crack resistant and not prone to deliquescence, being easy to process and store, and the like. The crystal is widely applied to manufacturing of nonlinear optical devices such as frequency doubling generators, frequency up-converters, frequency down-converters or optical parametric oscillators.
Patent WO-2014000605-A1 (WO)
Title: 触摸屏终端的报警方法及触摸屏终端
Inventor: CHEN FEI
IPC: H04M1/72421
Filed: 2013-06-21
Abstract: 本发明公开了一种触摸屏终端的报警方法及触摸屏终端，其中，该方法包括：终端检测触摸屏是否接收到触摸事件；如果是，则终端发出报警。通过运用本发明，解决了防盗报警方法的应用性差，无法使报警真正发挥其作用，最终还是导致终端被盗的问题，进而提供了一种较为可靠的防盗方法，实用性强，提升了系统的性能，提高用户体验。
Patent WO-2014169537-A1 (WO)
Title: Pixel circuit, method for driving pixel circuit, and display apparatus
Inventor: QING HAIGANG
IPC: G09G3/32
Filed: 2013-07-05
Abstract: A pixel circuit, a driving method for driving the pixel circuit, and a display apparatus comprising the pixel circuit. When a pixel circuit writes data into a storage capacitor (C st ), a threshold voltage drift is effectively compensated by blocking, by a blocking transistor (T3), an electrical connection between a drain of a driving transistor (DTFT) and an organic light emitting diode (OLED) and by pre-storing, by the storage capacitor (C st ), a threshold voltage and a data voltage (V data ) signal of the driving transistor (DTFT), thereby ensuring the uniformity and stability of a driving current. Further, a touch control circuit reuses a scanning signal of the pixel circuit. When the storage capacitor (C st ) is charged, a coupling capacitor (Cp) in the touch control circuit is also charged by using a charging transistor (T4), thereby implementing the integration of the touch control circuit in the pixel circuit.
Patent WO-2014026558-A1 (WO)
Title: Channel calibration method and apparatus, and access system
Inventor: XIANG TAO
IPC: H04B7/26
Filed: 2013-08-07
Abstract: Disclosed are a channel calibration method and apparatus, and an access system. The channel calibration method may comprise: calibrating a joint reference channel formed between a first RRU and a second RRU, to obtain a reference difference parameter; adjusting calibration coefficients of the first RRU and the second RRU according to the reference difference parameter; performing channel calibration on the first RRU by using the adjusted calibration coefficient of the first RRU, and performing channel calibration on the second RRU by using the adjusted calibration coefficient of the second RRU. Through the present invention, the channel difference of a transceiver channel of a single RRU cane be compensated, so as to implement channel calibration of a single RRU; moreover, the channel difference between multiple RRUs can also be compensated, so as to implement channel calibration between multiple RRUs, thereby improving the beamforming gain and improving the system performance.
Patent WO-2015018068-A1 (WO)
Title: 信息交互方法、基站以及通信系统
Inventor: ZHANG YI
IPC: H04W56/00
Filed: 2013-08-09
Abstract: 本发明实施例提供一种信息交互方法、基站以及通信系统。该信息交互方法包括：第一基站向第二基站发送用于多点协作传输的资源协调信息；或者，发送用于信道状态信息测量的测量协调信息；或者，发送资源管理集协调信息；或者，发送进行多数据流传输的空间协调信息，使得在服务小区与用户设备之间传输第一数据流，同时在协作小区与用户设备之间传输第二数据流。通过本发明实施例，可以减少或者消除非理想交互时延给CoMP传输带来的影响。
Patent WO-2014048197-A1 (WO)
Title: 用户设备选择拜访公共陆地移动网络的方法、系统和设备
Inventor: ZHOU XIAOYUN
IPC: H04W12/0471
Filed: 2013-08-23
Abstract: 本发明公开了一种用户设备（UE）选择拜访公共陆地移动网络（VPLMN）的方法，认证服务器将UE执行接入认证时所选择的VPLMN的VPLMN ID发送给UE，UE根据所述VPLMN ID选择VPLMN的核心网网元，并与所述核心网网元执行互联网密钥交换协议（IKEv2）隧道建立流程；本发明同时还公开了一种用户设备选择拜访公共陆地移动网络的系统和设备，通过本发明的方案，能够保证UE选择的VPLMN的核心网网元与第三代合作伙伴计划验证、授权和记账代理位于同一个VPLMN。