Throughput Enhancement with ACK/NACK Mechanism in Short-Range Millimeter-Wave Communication Systems
スポンサーリンク
概要
- 論文の詳細を見る
The 60GHz millimeter-wave (mmWave) wireless technology is a focus of increasing attention, since its ability to transmit more than Gbps PHY data rate makes it suitable for high-speed, short-range applications such as peer-to-peer synchronization and kiosk terminals. In the case of short-range communication with a range of several tens of centimeters, only terminals present in this communication range will be affect and communication is considered to be on a one-to-one basis. In one-to-one communication, a simpler and more efficient access mechanism is preferable. The ability of current CSMA/CA based MAC, for example MAC of IEEE 802.11 WLAN systems, to achieve high throughput is limited by the low MAC efficiency caused by high signal exchange overhead, such as interframe space (IFS) and acknowledgement. This paper proposes an ACK/NACK mechanism that enhances the throughput in short-range one-to-one communication. The ACK/NACK mechanism uses Negative ACK (NACK) as the acknowledgement policy to reduce the overhead of ACK and the transmitter switches the required acknowledgement policy to ACK based on a switchover threshold. It solves a problem arising from NACK, namely, that NACK has no mechanism for keeping alive. We evaluate the throughput of the ACK/NACK mechanism by both theoretical analysis and computer simulation. The proposed ACK/NACK mechanism is implemented in 65nm CMOS process (BBIC); we connect this BBIC to a 60GHz RFIC and exchange frames wirelessly. In this experiment, it is verified that the ACK/NACK mechanism enhances throughput.
著者
-
Tomizawa Takeshi
Corporate Research & Development Center Toshiba Corporation
-
TANDAI Tomoya
Corporate Research & Development Center, Toshiba Corporation
-
Kasami Hideo
Corporate R&d Center Toshiba Corp.
-
MATSUO Ryoko
Corporate Research & Development Center, Toshiba Corporation
関連論文
- Performance Enhancement of IEEE 802.11 WLAN with a Cognitive Radio Technique
- An Adaptive Array Antenna Steered by IF Local Signal Phase Shifters for K-Band Broadband Fixed Wireless Access Base Station(Special Issue on Innovation in Antennas and Propagation for Expanding Radio Systems)
- A Modified DCMP Algorithm for SDMA Receiver in Base Station of Broadband Fixed Wireless Access Systems (Special Issue on Adaptive Array Antenna Techniques for Advanced Wireless Communications)
- Soft-Prioritization Based System Selection Strategy for Software Defined Radio(Software Defined Radio Technology and Its Applications)
- Proposal of an A/D Converter Clipping Noise Suppression Technique for High-Sensitivity Carrier-Sensing of Cognitive Radio Transceiver
- A Study on Cognitive Radio Coexisting with Cellular Systems
- Comparison of Techniques to Mitigate Wavelength Contention in a Photonic Network with Frequent Optical Path Setups(Switching for Communications)
- A Sidelobe Suppression Technique by Regenerating Null Signals in OFDM-Based Cognitive Radios
- Performance Analysis of Control Signal Transmission Technique for Cognitive Radios in Dynamic Spectrum Access Networks
- Dynamic Pilot Channel Transmission with Adaptive Receive Filter Configuration for Cognitive Radio System
- Throughput Enhancement with ACK/NACK Mechanism in Short-Range Millimeter-Wave Communication Systems