Abstract: A method and apparatus for controlling freshness of sensor information is provided. The method includes receiving a plurality of sets of sensor information, calculating the freshness of each or integrated freshness of the sets of sensor information, generating a sensor information message by controlling freshness of the sets of sensor information and combining the sets of sensor information, and transmitting the sensor information message to an information user.

Abstract: Disclosed herein are an in-network caching apparatus and method. The in-network caching method using the in-network caching apparatus includes receiving content from a second node in response to a request from a first node; checking a Conditional Leave Copy Everywhere (CLCE) replication condition depending on a number of requests for the content; checking a priority condition based on a result value of a priority function for the content; checking a partition depending on the number of requests for the content; performing a cache replacement operation for the content depending on a result of checking the partition for the content; and transmitting the content to the first node.

Abstract: Provided is a network management server that may select a resource entity corresponding to a resource to be allocated to a peer based on shared resource information, transmit resource allocation request information including resource release condition information to the selected resource entity, receive resource allocation result information from the selected resource entity in response to allocating the resource for the peer, based on the resource allocation request information, and transmit the resource allocation result information to the peer.

Abstract: A method and apparatus for managing an identification system for a sensor device used to protect and monitor an electrical installation. The method includes receiving an identifier allocation request for allocation of an identifier of a sensor device and allocating the identifier to the sensor device in response to the identifier allocation request, in which the identifier includes a customer number used to identify an installation unit at which the sensor device is positioned, a sensor device name used to identify a type of the sensor device, an electrical installation name used to identify a target electrical installation in an electrical facility to be sensed by the sensor device, and a classified space name indicating information on a space in the electrical facility in which the sensor device is positioned.

Abstract: An operating method of an overlay management server (OMS) is disclosed. The operating method may include performing a registration process along with a network entity, performing a resource reservation process along with the network entity in response to the registration process being performed, receiving a peer list provision request from the network entity in response to the resource reservation process being performed, and transmitting, to the network entity, a peer list including information associated with an overlay resource for the network entity based on a priority level of the network entity in response to the peer list provision request being received.

Abstract: Disclosed is a method of operating a peer-to-peer (P2P) network management system, the method including generating a peer list in response to a request for the peer list from a request peer and sending a request for piece information corresponding to the peer list to a peer activity management server, the peer activity management server being configured to manage peer status information, receiving the piece information generated based on the peer status information from the peer operation server, generating a response message including the piece information and the peer list, and sending the response message to the request peer.

Abstract: Disclosed herein are an in-network caching apparatus and method. The in-network caching method using the in-network caching apparatus includes receiving content from a second node in response to a request from a first node; checking a Conditional Leave Copy Everywhere (CLCE) replication condition depending on a number of requests for the content; checking a priority condition based on a result value of a priority function for the content; checking a partition depending on the number of requests for the content; performing a cache replacement operation for the content depending on a result of checking the partition for the content; and transmitting the content to the first node.

Abstract: Provided is an operation method of a receiving entity, the method including setting a session with a sending entity based on bootstrap information; transmitting a signaling message corresponding to a media delivery request to the sending entity through the session; receiving media data from the sending entity through the session; and transmitting a signaling message corresponding to a media delivery control request to the sending entity through the session while receiving the media data.

Abstract: An operating method of an overlay management server (OMS) is disclosed. The operating method may include performing a registration process along with a network entity, performing a resource reservation process along with the network entity in response to the registration process being performed, receiving a peer list provision request from the network entity in response to the resource reservation process being performed, and transmitting, to the network entity, a peer list including information associated with an overlay resource for the network entity based on a priority level of the network entity in response to the peer list provision request being received.

Abstract: A resource allocation method of an overlay management server (OMS) is disclosed. The resource allocation method may include transmitting, to a cache server (CS), a remote peer list determined based on a network distance between each of peers and the CS, receiving, from the CS, a peer list including an identifier of a peer receiving contents from the CS in response to the identifier of the peer being included in the remote peer list, and selecting another CS for the peer in response to the peer list being received.

Abstract: Provided a proof of play (PoP) method of a digital signage terminal and a digital signage server, the PoP method of the digital signage terminal including obtaining a digital signature and a PoP message generation policy provided by a content owner, generating log data comprising information on a play of at least one piece of content, based on the PoP message generation policy, generating a PoP message using information on the digital signature based on the generated log data, and providing the PoP message to at least one of the digital signage server and the content owner.

Abstract: A digital signage system and a method of providing information using the digital signage system are disclosed. The digital signage terminal includes an emergency detection unit, an emergency detection message generation unit, a communication unit, and an emergency alert message processing unit. The emergency detection unit collects the surrounding emergency-related information of the digital signage terminal. The emergency detection message generation unit generates an emergency detection message including the collected emergency-related information. The communication unit transmits the generated emergency detection message to a digital signage server, and receives an emergency alert message including an emergency alert corresponding to an emergency situation from the digital signage server. The emergency alert message processing unit parses the emergency alert message, and provides the emergency alert included in the emergency alert message to a user.

Abstract: Disclosed herein are a method of adaptively delivering media based on reception status information from a media client and an apparatus using the same. A media transmission method by a media transmission apparatus may include sending a message, including configuration information for media requested by a terminal, to the terminal, sending a media packet forming the media to the terminal, selecting a media packet having a transport characteristic corresponding to reception quality information for the media packet received from the terminal based on the reception quality information, and sending the selected media packet to the terminal.

Abstract: Disclosed herein are a method and apparatus for time-assisted authentication. A main authentication entity may generate a group of communication entities. In keying protocol a key distributor, i-e main authentication entity, controls the key generation arguments and time factor; other member of the group independently generate the time-based keys using the key generation arguments. Respective keys in the chain of keys may be valid for time intervals predefined for respective keys. A ticket is issued to the valid customer node during initial authentication process, which is further used for re-authentication of customer node with other service providing entities and customer to customer node mutual authentication. A ticket verifier may authenticate a customer node by decrypting the ticket using time based keys.

Abstract: Provided is a network management server that may select a resource entity corresponding to a resource to be allocated to a peer based on shared resource information, transmit resource allocation request information including resource release condition information to the selected resource entity, receive resource allocation result information from the selected resource entity in response to allocating the resource for the peer, based on the resource allocation request information, and transmit the resource allocation result information to the peer.

Abstract: Disclosed herein are a method and apparatus for processing MMTP packets. When an MMTP packet is transmitted, the packet processing apparatus calculates a reference value from partial field values of a reference MMTP packet header, and inserts the calculated reference value into the compressed header. By the reference value, MMTP packets may be correctly distinguished and may be correctly referred to when there are two reference MMTP packets in which the lower 5 bits of packet sequence numbers are identical to each other, or even when the number of reference MMTP packets is a multiple of 256.

Abstract: Disclosed is a method of operating a peer-to-peer (P2P) network management system, the method including generating a peer list in response to a request for the peer list from a request peer and sending a request for piece information corresponding to the peer list to a peer activity management server, the peer activity management server being configured to manage peer status information, receiving the piece information generated based on the peer status information from the peer operation server, generating a response message including the piece information and the peer list, and sending the response message to the request peer.

Abstract: Disclosed is a method of operating a server, the method including receiving peer status information from at least one peer, estimating a service reception quality of the peer by calculating a download speed of the peer based on the peer status information, identifying a target peer having the service reception quality less than or equal to a predetermined reference, and determining a helper peer to transmit data to the target peer based on the peer status information.

Abstract: A wireless charging system and a method of controlling permission for charging in the wireless charging system are provided herein. The wireless charging system includes a power transmitting unit and an authentication server. The power transmitting unit transmits a power receiving unit (PRU) control message to a power receiving unit, receives PRU dynamic parameter characteristics generated by the power receiving unit based on an authentication number input by the user of the power receiving unit, and wirelessly supplies charging power to the power receiving unit based on the input result of authentication. The authentication server authenticates the authentication number input by the user and included in the PRU dynamic parameter characteristics provided by the power transmitting unit, and transmits the result of the authentication to the power transmitting unit.

Abstract: A peer-to-peer network system provides at least one peer with information for configuration of a peer-to-peer network to optimize the configuration of the peer-to-peer network by using at least one of information about a status of the at least one peer, information about a status of an underlying network and information about a user in respect of services.