Sept. 2015 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: Simulation Results for an NAV Setting Mechanism for RTS/CTS Handshaking Date Submitted: July ,2015 Source: [Nah-Oak Song]1, [Byung-Jae Kwak]2, [Junhyuk Kim]1 Company [KAIST]1, [ETRI]2 Address [291 Daehak-ro, Yuseong-gu, Daejeon, Korea]1, [218 Gajeong-ro, Yuseong-gu, Daejeon, Korea]2 E-Mail:[nsong@kaist.ac.kr, kim.jh@kaist.ac.kr]1, [bjkwak@etri.re.kr]2 Re: P802.15.8 Draft D0.14.0 Abstract: Presents the simulation results for new NAV setting mechanism for RTS/CTS handshaking mechanism that improves efficiency by minimizing exposed node problem. Purpose: Discussion Notice: This document has been prepared to assist the IEEE P802.15. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. Release: The contributor acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P802.15. Nah-Oak Song et al., KAIST

Sept. 2015 Simulation Results for an NAV Setting Mechanism for RTS/CTS Handshaking September 2015 Nah-Oak Song et al., KAIST

Original RTS/CTS Handshaking Sept. 2015 Original RTS/CTS Handshaking NAV Setting Mechanism Nah-Oak Song et al., KAIST

Proposed RTS/CTS Handshaking (1/2) Sept. 2015 Proposed RTS/CTS Handshaking (1/2) NAV Setting Mechanism Nah-Oak Song et al., KAIST

Proposed RTS/CTS Handshaking (2/2) Sept. 2015 Proposed RTS/CTS Handshaking (2/2) Original RTS/CTS handshaking Removes hidden nodes Instead, creates more exposed nodes Thus, results in inefficient use of valuable resource Proposed RTS/CTS handshaking Minimizes exposed nodes created by the original RTS/CTS handshaking By smart NAV setting mechanism Nah-Oak Song et al., KAIST

Simulation Results (1/5) Sept. 2015 Simulation Results (1/5) Comments from previous meeting in Hawaii: “The effectiveness needs to be verified by simulation.” Nah-Oak Song et al., KAIST

Simulation Results (2/5) Sept. 2015 Simulation Results (2/5) Simulation scenario/parameters Clustered random drop & uniform random drop #PDs: 50, 100, 200, 500, 1000 500m x 500m area Performance criteria: areal throughput Packet size 1500 bytes Data rate: 6 Mbps Nah-Oak Song et al., KAIST

Simulation Results (3/5) Sept. 2015 Simulation Results (3/5) Clustered random drop Clustered Random drop 100 200 500 1000 PDs Nah-Oak Song et al., KAIST

Simulation Results (4/5) Sept. 2015 Simulation Results (4/5) Uniform random drop Uniform Random drop 100 200 500 1000 PDs Nah-Oak Song et al., KAIST

Simulation Results (5/5) Sept. 2015 Simulation Results (5/5) Areal throughput Clustered Random drop, 1500B Uniform Random drop, 1500B Nah-Oak Song et al., KAIST

Conclusion Exposed node problem more severe when PD density is high Sept. 2015 Conclusion Exposed node problem more severe when PD density is high Simulation results show the effectiveness of the proposed RTS/CTS handshaking scheme The proposed RTS/CTS handshaking significantly improves the areal throughput with no additional complexity Nah-Oak Song et al., KAIST