Samsung Sds Co., Ltd.

Kyung Seung Lee

Hyo Jin Yoon

Seon Young Lee

Jung Hoon Sohn

Kyoung Jin Oh

Min Ah Park

Provided are a terminal and a system and method for monitoring a wireless network. The system for monitoring a wireless network includes: a first terminal including: a packet gap model (PGM) transmission unit for transmitting a plurality of measurement packets at a previously calculated transmission time interval; and a channel quality indicator (CQI) unit for acquiring information regarding channel quality of a wireless communication channel to measure an assured maximum increment of speed of the network; a second terminal including a PGM reception unit for receiving the measurement packets and measuring a non-assured maximum possible speed of the network from a reception time interval of the received measurement packets; and a wireless access point connected with the first terminal through the wireless communication channel.

Terminal, and system and method for monitoring wireless network

Disclosed are a data transmission/reception apparatus and method. A secret key generation unit uses a user ID as a public key to generate a secret key corresponding to the user ID. An encryption/decryption unit sets a user ID intended to receive data as an input value to encrypt the data using a certain method and decrypt the encrypted data using a certain method on the basis of a secret key corresponding to a user ID of a receiver generated by the secret key generation unit. The transmission apparatus and method according to the present invention allow for secure communication between terminals without server intervention by encrypting data using an ID-based encryption technique for safe data communication and then communicating the encrypted data.

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Seoul, South Korea

Kyung Seung Lee