무선 USB 인증/보안용 프로세서 IP 설계

양현창(Hyun-Chang Yang),박상덕(Sang-Deok Park),신경욱(Kyung-Wook Shin) 대한전자공학회 2007 대한전자공학회 학술대회 Vol.2007 No.11

본 논문에서는 무선 USB에서 호스트와 디바이스간의 인증과 데이터 보안에 필요한 보안 알고리듬을 효율적인 하드웨어로 구현한 무선 USB 인증/보안용 프로세서 (WUSB_Sec)설계에 대해 기술한다. 무선 USB의 접속인증을 위해서는 AES-128을 사용한 CCM(Count mode with CBC-MAC) 기반의 Pseudo-Random-Function(PRF)으로 이루어지는 4-way handshake 프로토콜이 사용된다. PRF는 호스트와 디바이스의 상호 인증에 필요한 MIC을 생성하기 위한 PRF-64, MIC 생성에 사용되는 키와 데이터 암/복호 키 생성을 위한 PRF-256으로 구성되며, 인증 후 데이터 암/복호에는 CCM이 사용된다. 본 논문에서는 3가지 모드를 수행 할 수 있는 다중모드로 구현하였으며, 동작 속도의 향상을 위해 64비트의 데이터패스를 사용하였다. WUSB_Sec의 핵심 블록인 AES-128 코어는 CCM의 특성상 암호 연산만으로 구현되고, GF(((2²)²)²) composited field 연산기반의 S-Box를 이용하여 설계되었으며, 하드웨어의 최소화를 위해 SubByte연산 블록과 키 생성 블록이 S-Box를 공유하도록 설계하였다.

무선 USB 시스템에서 간섭 회피를 위한 채널 스케쥴링 기법

김진우(Jin-Woo Kim),박경우(Kyung Woo Park),오일환(Il-Whan Oh),김경호(Kyung-Ho Kim),이성로(Seong Ro Lee) 한국통신학회 2015 韓國通信學會論文誌 Vol.40 No.7

Designing ActiveSync for Pocket PC using Wireless Technology

Bhaskar, Shalini,Saxena, S.K. The Korea Institute of Information and Commucation 2008 Journal of information and communication convergen Vol.6 No.2

This paper presents proposal for an application (only for Windows-based Mobile) that can synchronize the Third Generation Windows-based mobile with the prescribed server. This application can be used by mobile users to send information directly to the WAS server wirelessly. In this paper a comparison between Third Generation technology and WLAN ( both are parallel technologies first one embodied by IMT-2000 standards and the second one by ITU Standards) has been made and also a comparison between Wi-Fi and Bluetooth has been made.

무선 USB 동글 장치를 위한 프린트형 미앤더 모노폴 안테나

정성재(Seong-Jae Jeong),황금철(Keum-Cheol Hwang),신재호(Jae-Ho Shin) 한국전자파학회 2010 한국전자파학회논문지 Vol.21 No.10

본 논문에서는 이동 통신 기기에 적합하고 다중 대역을 지원하는 무선 USB 동글(dongle)용 내장형 안테나를 제안하였다. 제안된 무선 USB 동글용 안테나는 프린트형 미앤더 모노폴 안테나를 사용하여 이중 광대역 특성을 구현하였고, 50-Ω 동축 케이블을 이용하여 급전하였다. 안테나는 두께가 1 ㎜, 비유전율이 4.6인 FR-4 기판위에 설계되었고, 전체 크기는 10×50 ㎟로 내장형 안테나에 적합하다. 제작된 안테나는 측정 결과, VSWR<2 기준으로 2.3~2.7 ㎓, 5.15~5.825 ㎓의 이중 대역을 만족시킨다. 따라서 제안된 안테나는 WiBro, Bluetooth/ISM, WLAN, S-DMB, WiMAX의 대역을 만족하는 무선 USB 동글용 안테나로 유용하게 활용될 수 있을것이라 사료된다. In this paper, a novel printed meander monopole antenna is proposed for wireless USB dongle applications. Dual-wideband resonance is obtained by utilizing a printed meander monopole radiator. The proposed antenna was fabricated on a thin FR-4 substrate with a thickness of 1 ㎜ and a dielectric constant of 4.6. The antenna is fed by a 50 Ω coaxial cable. This novel USB dongle antenna measures only 10×50 ㎟. The measured results demonstrates that the antenna supports WiBro, Bluetooth/ISM, WLAN, S-DMB, and WiMAX service bands.

무선 USB 인증/보안용 프로세서 IP 설계

양현창,신경욱,Yang, Hyun-Chang,Shin, Kyung-Wook 한국정보통신학회 2008 한국정보통신학회논문지 Vol.12 No.11

무선 USB 시스템의 호스트-디바이스 간에 4-way handshake 상호 인증을 위한 PRF(Pseudo Random Function)-256, PRF-64 및 데이터 암/복호 기능을 수행하는 저면적 고속 인증/보안 프로세서 (WUSB_Sec) IP를 설계하였다. PRF-256과 PRF-64는 CCM(Counter mode with CBC-MAC) 연산을 기반으로 구현되며, CCM은 AES(Advanced Encryption Standard) 암호 코어 2개를 사용하여 CBC 모드와 CTR 모드가 병렬로 처리되도록 설계되었다. WUSB_Sec 프로세서의 핵심 블록인 AES 암호 코어는 합성체 GF$(((2^2)^2)^2)$ 연산 기반의 S-Box로 설계되었으며, SubByte 블록과 키 스케줄러가 S-Box를 공유하도록 설계하여 약 10%의 면적을 감소시켰다. 설계된 WUSB_Sec IP는 약 25,000 게이트로 구현되었으며, 120MHz에 서 동작하여 480Mbps의 성능을 갖는다. A small-area and high-speed authentication/security processor (WUSB_Sec) IP is designed, which performs the 4-way handshake protocol for authentication between host and device, and data encryption/decryption of wireless USB system. The PRF-256 and PRF-64 are implemented by CCM (Counter mode with CBC-MAC) operation, and the CCM is designed with two AES (Advanced Encryption Standard) encryption coles working concurrently for parallel processing of CBC mode and CTR mode operations. The AES core that is an essential block of the WUSB_Sec processor is designed by applying composite field arithmetic on AF$(((2^2)^2)^2)$. Also, S-Box sharing between SubByte block and key scheduler block reduces the gate count by 10%. The designed WUSB_Sec processor has 25,000 gates and the estimated throughput rate is about 480Mbps at 120MHz clock frequency.

Wireless Channel Management Scheme for ASMD Groups in Wireless N-screen Services

허경 한국멀티미디어학회 2016 멀티미디어학회논문지 Vol.19 No.11

In this paper, a Wireless USB (WUSB) protocol is adopted for development of ASMD (Adaptive Source Multi Device) N-screen wireless services. WUSB is the USB technology merged with WiMedia PHY and Distributed-MAC (D-MAC). However, the current WUSB protocol can’t provide seamless N-screen streaming services to moving WUSB devices in home network environment. Therefore, to provide the ASMD N-screen services through WUSB based on D-MAC protocol, a channel management scheme is proposed to support seamless mobility between adjacent ASMD groups for wireless IPTV N-screen services. In simulation results, proposed ASMD channel management (ACM) scheme is compared with conventional WUSB channel management scheme in view points of throughput, average path interference and energy consumption according to various numbers of nodes and elapsed simulation times. Through simulation results, it is explained that proposed ASMD channel management (ACM) scheme should be adopted in the WUSB protocol to realize ASMD N-screen wireless services.

Link Adaptive Cooperative Communication in Wireless USB Networks

Seong Ro Lee,Jin-Woo Kim,Min A Jung 보안공학연구지원센터 2014 International Journal of Control and Automation Vol.7 No.10

In this paper, we propose link-adaptive cooperative communication in wireless USB networks. To select the optimal relay node, we propose the RNS (Relay Node Selection) algorithm considering channel condition. Also, the proposed protocol can be directly applied with small overhead to the current wireless USB standard system. Furthermore, each device independently performs RNS algorithm by using the proposed protocol.

Cooperative MAC Design for Cross-layer Link Adaptation of Wireless USB Cluster

Jin-Woo Kim,Jong hwan Park,Seong Ro Lee 한국정보통신학회 2014 2016 INTERNATIONAL CONFERENCE Vol.6 No.1

In this paper, we propose cooperative MAC protocol for cross-layer link adaptation of wireless USB (Universal Serial Bus) cluster. To do this, we propose the RNS (Relay Node Selection) algorithm considering UWB (Ultira-Wide Band) link state. The proposed protocol is compatible and can be directly applied with small overhead to the current wireless USB standard system. Also, in the proposed protocol, each device independently performs RNS algorithm.

An Energy-Efficient MAC Protocol for Wireless Wearable Computer Systems

Beh, Jounghoon,Hur, Kyeong,Kim, Wooil,Joo, Yang-Ick The Korea Institute of Information and Commucation 2013 Journal of information and communication convergen Vol.11 No.1

Wearable computer systems use the wireless universal serial bus (WUSB), which refers to USB technology that is merged with WiMedia physical layer and medium access control layer (PHY/MAC) technical specifications. WUSB can be applied to wireless personal area network (WPAN) applications as well as wired USB applications such as PAN. WUSB specifications have defined high-speed connections between a WUSB host and WUSB devices for compatibility with USB 2.0 specifications. In this paper, we focus on an integrated system with a WUSB over an IEEE 802.15.6 wireless body area network (WBAN) for wireless wearable computer systems. Due to the portable and wearable nature of wearable computer systems, the WUSB over IEEE 802.15.6 hierarchical medium access control (MAC) protocol has to support power saving operations and integrate WUSB transactions with WBAN traffic efficiently. In this paper, we propose a low-power hibernation technique (LHT) for WUSB over IEEE 802.15.6 hierarchical MAC to improve its energy efficiency. Simulation results show that the LHT also integrates WUSB transactions and WBAN traffic efficiently while it achieves high energy efficiency.

A Hierarchical MAC Protocol for QoS Support in Wireless Wearable Computer Systems

Hur, Kyeong The Korea Institute of Information and Commucation 2014 Journal of information and communication convergen Vol.12 No.1

A recent major development in computer technology is the advent of wearable computer systems. Wearable computer systems employ a wireless universal serial bus (WUSB), which refers to a combination of USB with the WiMedia wireless technical specifications. In this study, we focus on an integrated system of WUSB over wireless body area networks (WBANs) for wireless wearable computer systems. However, current WBAN MACs do not have well-defined quality of service (QoS) mapping and resource allocation mechanisms to support multimedia streams with the requested QoS parameters. To solve this problem, we propose a novel QoS-aware time slot allocation method. The proposed method provides fair and adaptive QoS provisioning to isochronous streams according to current traffic loads and their requested QoS parameters by executing a QoS satisfaction algorithm at the WUSB/WBAN host. The simulation results show that the proposed method improves the efficiency of time slot utilization while maximizing QoS provisioning.