Electronics and Telecommunications Research Institute

Cheolhyo Lee

Hyung Soo Lee

Hong Soon Nam

Jae Young Kim

Sangsung Choi

Young-Jun Hong

Sung-Yoon Jung

Dan-Keun Sung

Hyung-Soo Lee

Mi-Kyung Oh

Bang-Chul Jung

Min-Sheo Choi

Dong-Jo Park

Ki-Ho Kil

Chang-Yong Jung

Jo-Woon Chong

Min-Jeong Kim

Jaeyoung Kim

Hongsoon Nam

A human body communication system is disclosed, which includes a plurality of intra-body communication apparatuses, a plurality of extra-body communication apparatuses, a bridge apparatus, and an access point. The bridge apparatus manages connections between the intra-body communication apparatuses and the extra-body communication apparatuses, and performs packet exchange. The access point performs packet exchange between a plurality of bridge apparatuses. The bridge apparatus performs negotiation with communication apparatuses to set up a connection, and manages a path based on the connection setup.

Body communication system, media access control bridge, bridge apparatus, and operating method of bridge apparatus

A system for power saving in communication with a plurality of sensor apparatuses that are located in-body or on-body to sense bioinformation, a management apparatus that performs synchronization by transmitting a beacon signal to the plurality of sensors at each predetermined period, and a sensor apparatus that includes a sensor receiving a first beacon signal, grasps how much time remains until the second beacon signal is received when the sensor is activated to sense the bioinformation, and determines the operation state of the sensor based on the grasped time are provided.

System and method for power saving for in-body and on-body communication

Provided is a method for measuring a node location using a Media Access Control (MAC) layer of a Wireless Personal Area Network (WPAN). The method, includes: requesting ranging measurement to the mobile node by broadcasting an MAC frame where ranging measurement start is displayed according to a ranging measurement request message for a mobile node transmitted from outside; and receiving ranging measurement information measured in the mobile node as a response to the broadcasted MAC frame and broadcasting an MAC frame where ranging measurement end is displayed.

Method for measuring node location using MAC layer of wireless personal area network

Provided is a communication system for ultra wide band impulse communication, and more particularly, to a communication apparatus and method that can be used in a sensor network or a low-rate wireless personal area network. To be more specific, the present research suggests a transmitter employing multi-coded bi-orthogonal pulse position modulation/demodulation and a method thereof. The transmitter of the present research provides: a serial-to-parallel converter for convening L-bit serial data to be transmitted into parallel data by performing grouping on the L-bit serial data; a multi-coder for generating a multi-coded symbol by multiplying the parallel data by total L orthogonal codes of length N; a bi-orthogonal pulse position modulator for positioning the multi-coded symbol in a predetermined pulse period and performing biorthogonal pulse position modulation; and a pulse generator for multiplying an output signal of the bi-orthogonal pulse position modulator by a predetermined pulse and outputting an output signal.

Apparatus and method for ultra wide band communication based on multi-coded bi-orthogonal pulse position modulation

Growing community of inventors

Daejeon, South Korea

Cheolhyo Lee