An electronic device is provided. The electronic device includes a communication interface, a memory for storing at least one instruction and storing a plurality of pieces of transaction information and a plurality of index values corresponding to the plurality of pieces of transaction information, and at least one processor configured to control the electronic device by being connected to the memory, wherein the at least one processor is further configured to execute the at least one instruction to, when a delete request including an index value corresponding to transaction information is received, compare the index value included in the delete request with the plurality of index values stored in the memory, delete transaction information corresponding to the index value included in the delete request from the memory, based on a result of the comparison, generate verification data corresponding to the interface to transmit the generated verification data to an external server included in a blockchain network.

A method performed in an Internet of Vehicles data transmission system is provided in the present disclosure, where the Internet of Vehicles data transmission system includes a plurality of clusters and at least one road-side unit connected to the Internet, each cluster includes at least one on-board unit, and the at least one on-board unit includes a cluster head on-board unit, and the method includes: transmitting data in the on-board unit to one of the at least one road-side unit, via the cluster head on-board unit of the cluster where the on-board unit belongs. An on-board unit and an Internet of Vehicles data transmission system are further provided.

A method of controlling a packet stream generated by an application installed in a mobile terminal, the stream being intended to be sent by the terminal over a communications network managed by an operator. The method includes the following acts implemented in the terminal, for at least one packet generated by the application: obtaining a first packet having a first header and payload data; transmitting a request message to a security module installed in the terminal, the message including a parameter of the first header; receiving a response from the security module, which includes an instruction relating to transmission of a second packet, the response being based on the parameter and established according to a processing rule; preparing the second packet by modifying the first header into a second header, based on the instruction, the second packet including the second header and the payload data; and transmitting the second packet.

A method of controlling a packet stream generated by an application installed in a mobile terminal, the stream being intended to be sent by the terminal over a communications network managed by an operator. The method includes the following acts implemented in the terminal, for at least one packet generated by the application: obtaining a first packet having a first header and payload data; transmitting a request message to a security module installed in the terminal, the message including a parameter of the first header; receiving a response from the security module, which includes an instruction relating to transmission of a second packet, the response being based on the parameter and established according to a processing rule; preparing the second packet by modifying the first header into a second header, based on the instruction, the second packet including the second header and the payload data; and transmitting the second packet.

An embodiment of the present invention is a device-to-device (D2D) signal receiving method in which a terminal receives a D2D signal in a wireless communication system. The method includes the steps of: receiving a first medium access control protocol data unit (MAC PDU); receiving a second MAC PDU; and determining whether to combine the first MAC PDU and the second MAC PDU in order to decode; wherein whether to combine the first MAC PDU and the second MAC PDU in order to decode is determined from the number of transmissions of MAC PDUs and an NDI that have been instructed to the terminal.

An embodiment of the present invention is a device-to-device (D2D) signal receiving method in which a terminal receives a D2D signal in a wireless communication system. The method includes the steps of: receiving a first medium access control protocol data unit (MAC PDU); receiving a second MAC PDU; and determining whether to combine the first MAC PDU and the second MAC PDU in order to decode; wherein whether to combine the first MAC PDU and the second MAC PDU in order to decode is determined from the number of transmissions of MAC PDUs and an NDI that have been instructed to the terminal.

A method for managing a media transmission path includes: obtaining location information of a terminal; determining an application function user plane anchor device corresponding to the terminal, and an application function user plane edge device that has a minimum transmission delay, where the transmission delay is between the application function user plane edge device and the terminal; establishing media transmission paths between the application function user plane anchor device and the application function user plane edge device, and between the application function user plane edge device and the terminal; selecting a new application function user plane edge device when a location of the terminal changes; and handing over the terminal to the new application function user plane edge device. This method reduces a delay of a media transmission path, and can better meet a requirement of a delay sensitive service.

An extended reality (XR) system includes an XR server for generating XR environment data for an XR session defined by an XR session identifier; and a client application for operating on an XR device to present an XR environment to a user based on the XR environment data received from the XR server. The client application has a web browser configured to communicate with at least one web server. The web browser of the client application sends to the web server a content request comprising a content identifier and the XR session identifier that defines the XR session presented by the client application. The XR server receives from the web server additional information for the XR session defined by the XR session identifier; and changes the XR environment corresponding to the XR session identifier received from the web server based on the additional information received from the web server.

An extended reality (XR) system includes an XR server for generating XR environment data for an XR session defined by an XR session identifier; and a client application for operating on an XR device to present an XR environment to a user based on the XR environment data received from the XR server. The client application has a web browser configured to communicate with at least one web server. The web browser of the client application sends to the web server a content request comprising a content identifier and the XR session identifier that defines the XR session presented by the client application. The XR server receives from the web server additional information for the XR session defined by the XR session identifier; and changes the XR environment corresponding to the XR session identifier received from the web server based on the additional information received from the web server.

An electronic apparatus and an operation method thereof for determining a session duration time according to a characteristic of a response message in a chatbot are provided. The electronic apparatus is configured to determine a default session time based on a difficulty level of the response message, determine an additional session time based on conversation history information through the chatbot prior to outputting of the response message, determine a session duration time, which is a sum of the default session time and the additional session time, and provide the session duration time.