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1.发明公开
公开(公告)号：EP4258652A1
公开(公告)日：2023-10-11
申请号：EP22739159.6
申请日：2022-01-17
IPC分类号： H04N7/14 , H04N21/4788 , H04N21/431 , G06T7/00
摘要： Embodiments of this application provide an image processing method. The method includes: A first device receives request information of a second device; the first device obtains location information of M key points in a to-be-transmitted image, and determines a target display area in the to-be-transmitted image based on the request information and the location information of the M key points; and the first device sends target display area information to the second device, so that the second device processes the to-be-transmitted image into a target display image based on the target display area information. The second device receives the target display area information, processes the transmitted image into the target display image based on the target display area information, and presents the target display image on a display area of the second device. According to the method, the transmitted image is presented with best visual effect on the display area of the second device, to resolve a problem that image presentation effect is affected due to an image adaptation failure caused by different shapes of display areas of two devices.
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公开(公告)号：EP4236407A1
公开(公告)日：2023-08-30
申请号：EP20962831.2
申请日：2020-11-26
发明人： YANG, Yanjiang , LIU, Kai , GU, Yanjie , TIAN, Lianbing
IPC分类号： H04W12/04
摘要： This application provides a security authentication method and apparatus applied to Wi-Fi. An access point AP negotiates, based on a password, a pairwise master key PMK with a first device based on a twin base password encrypted key exchange TBPEKE protocol, where the password is a shared key between the AP and the first device; and the AP performs a 4-way handshake with the first device based on the PMK. Therefore, in embodiments of this application, a PMK with a high entropy value can be generated by performing a TBPEKE procedure, so that the security authentication method provided in embodiments of this application can help resist an offline dictionary attack. In addition, because TBPEKE can easily avoid a side channel attack, in embodiments of this application, the PMK is generated by executing the TBPEKE, which can improve anti-side channel attack capabilities of the AP and the first device in a security authentication process of Wi-Fi, and help the AP and the first device avoid the side channel attack during security authentication.
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公开(公告)号：EP3392784A1
公开(公告)日：2018-10-24
申请号：EP16884377.9
申请日：2016-01-14
发明人： HU, Yongjian , ZHANG, Xubao , LIU, Kai , YANG, Yang , YU, Liang
IPC分类号： G06F17/30
CPC分类号： G06F17/30002 , G06F3/0605 , G06F3/0629 , G06F3/0652 , G06F3/067 , G06F17/30 , G06F17/30292 , G06F17/30964 , H04L41/0896 , H04L41/12 , H04L41/5006
摘要： A method and an apparatus for managing a resource object in an SDN system are disclosed. The method includes: adding, by a management system, a mapping relationship between a UUID identifier of a newly discovered resource object and an FDN identifier of the newly discovered resource object to a resource object identifier mapping relationship table; receiving, by the management system, a first query request for a to-be-managed resource object that is sent by the application system, where the first query request is used to obtain an FDN identifier of the to-be-managed resource object; and returning, by the management system, the FDN identifier of the to-be-managed resource object to the application system. According to the method, the resource object in the SDN system can be managed by using the application system by slightly modifying a network management system in an existing network system and an application based on the network management system, thereby implementing smooth evolution of the existing network system to the SDN system.
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公开(公告)号：EP3229402A1
公开(公告)日：2017-10-11
申请号：EP15875047.1
申请日：2015-12-03
发明人： LIU, Kai
IPC分类号： H04L12/24
CPC分类号： H04L45/50 , H04L41/0663 , H04L41/0806 , H04L41/085 , H04L41/0896 , H04L41/5022 , H04L41/5025 , H04L43/0847 , H04L43/087 , H04L43/10 , H04L43/16 , H04W16/18
摘要： The present invention relates to the field of communications technologies, and discloses a method and an apparatus for managing a data transmission channel, so as to improve quality of a network service in a complex service scenario. The method of the present invention includes: obtaining a delay of data transmitted on a first channel and a continuity parameter of the first channel, and a delay of data transmitted on a second channel and a continuity parameter of the second channel; detecting whether a fault event occurs on the first channel; and if the fault event occurs on the first channel, switching a working channel of a source provider edge PE and a sink provider edge PE to the second channel.
摘要翻译： 本发明涉及通信技术领域，公开了一种管理数据传输信道的方法和装置，以提高复杂业务场景下网络业务的质量。 本发明的方法包括：获得第一信道上传输的数据的延迟和第一信道的连续性参数以及第二信道上传输的数据的延迟和第二信道的连续性参数; 检测第一通道是否发生故障事件; 如果所述故障事件发生在所述第一通道上，则将源运营商边缘PE和宿汇运营商边缘PE的工作通道切换到所述第二通道。
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公开(公告)号：EP4236379A1
公开(公告)日：2023-08-30
申请号：EP20962832.0
申请日：2020-11-26
发明人： LIU, Kai , GU, Yanjie
IPC分类号： H04W4/00
摘要： This application provides a security authentication method and apparatus applied to Wi-Fi, to help prevent a password from being shared among a plurality of devices, and implement management of a second device by a first device. In the method, an access point AP receives a first password input by the first device, where the first password is a password preset before delivery; and when checking on the first password by the AP succeeds, the AP obtains a second password shared between the AP and the first device, and performs 4-way handshake with the first device based on the second password. The second password is a shared key between the first device and the AP. Then, the AP can receive a first request from the first device, and send a third password to the first device in response to the first request, where the first request is used to request the second device to access the AP, and the third password is a shared key between the second device and the AP.
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公开(公告)号：EP4178297A1
公开(公告)日：2023-05-10
申请号：EP21849396.3
申请日：2021-07-12
发明人： QI, Yunlei , ZHONG, Qiwen , ZHU, Zhigang , LIU, Kai , CHEN, Jingfeng
摘要： This application provides a data transmission method, a communications apparatus, a network device, a communications system, a storage medium, and a computer program product, to resolve a current problem that bandwidth waste is relatively severe when a service is carried based on a FlexE technology. In this application, a frame structure of a fine-granularity service frame is newly defined, so that service data can be transmitted in a time division multiplexing mode by using an Ethernet (English: Ethernet, ETH) interface. Therefore, even a common Ethernet interface that does not support a standard FlexE mode can effectively use a bandwidth of the Ethernet interface, and bandwidth isolation is implemented. According to the technical solutions of this application, channel bandwidth utilization can be greatly improved, and in particular, when a low-rate service is carried, channel bandwidth utilization can be significantly improved, thereby avoiding bandwidth waste.
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公开(公告)号：EP4068869A1
公开(公告)日：2022-10-05
申请号：EP19958043.2
申请日：2019-12-24
发明人： YANG, Zhiwu , ZHANG, Dongfeng , LIU, Kai , HU, Tiegen , OUYANG, Guowei
摘要： This application provides a method, an apparatus, and a system for signal synchronization. The method for signal synchronization includes: A self-synchronizing first terminal device broadcasts first synchronization information; determines whether the first terminal device and a second terminal device have implemented signal synchronization when receiving second synchronization information sent by the second terminal device; and determines, based on a determining result, whether to synchronize to the second terminal device. This reduces a probability of communication interruption caused by synchronization source switching by the first terminal device after the second terminal device performs synchronization by using the first terminal device as a synchronization source. The method for signal synchronization may be applied to scenarios such as the intelligent driving, intelligent connected vehicles, and Internet of Vehicles.
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公开(公告)号：EP4170917A1
公开(公告)日：2023-04-26
申请号：EP21818026.3
申请日：2021-06-01
IPC分类号： H04B7/0413
摘要： Embodiments of this application disclose a communication method and a related apparatus. The method includes: A terminal device sends a first OAM reference signal to a network device in a first beam direction. The terminal device receives first indication information from the network device, where the first indication information includes a second beam direction. The terminal device sends a second OAM reference signal to the network device in the specified second beam direction. The terminal device receives second indication information from the network device, where the second indication information includes OAM matrix indicator information and OAM power indicator information, and the second indication information is used to determine that a transmission manner is OAM transmission, plane wave transmission, or joint transmission of OAM and a plane wave. In embodiments of this application, space-domain independence and uncorrelatedness can be actively constructed at the transmit end based on OAM, to increase a rank of a channel matrix in a mobile scenario, and improve spectral efficiency of wireless communication.
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公开(公告)号：EP4250791A1
公开(公告)日：2023-09-27
申请号：EP20963939.2
申请日：2020-12-03
发明人： TIAN, Jun , YANG, Yanjiang , TIAN, Lianbing , LIU, Kai
IPC分类号： H04W12/06
摘要： This application discloses a Wi-Fi security authentication method and a communication apparatus. In the method, an access point AP receives a first access request from a supplicant, where the first access request carries a first parameter, and the first parameter is a parameter generated by the supplicant based on a generator of a set cyclic group and a first random number; generates a second random number, generates a second parameter based on the second random number and the generator of the set cyclic group, and sends the second parameter to the supplicant, so that the supplicant generates a first pairwise master key based on the second parameter; generates a second pairwise master key based on the second random number, the first parameter, the second parameter, and a first target random key, where the first target random key is a random key newly allocated to the supplicant; and performs a four-way handshake authentication procedure with the supplicant based on the first pairwise master key and the second pairwise master key. The method can reduce a security risk caused by key leakage, and improve network security.
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