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Przemyslaw Korzynski Tutor:Jacek Jarmakiewicz, Ph. D.

Military University of Technology Faculty of Electronic Institute of Telecommunication. WRCP protocol elements implementation in MadWiFi driver. Przemyslaw Korzynski Tutor:Jacek Jarmakiewicz, Ph. D. Idea of WRCP protocol implementation.

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Przemyslaw Korzynski Tutor:Jacek Jarmakiewicz, Ph. D.

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  1. Military University of Technology Faculty of Electronic Institute of Telecommunication WRCP protocol elements implementation in MadWiFi driver Przemyslaw Korzynski Tutor:Jacek Jarmakiewicz, Ph. D.

  2. Idea of WRCP protocol implementation WRCP protocol elements implementation in MadWiFi driver • Increase range of data transmission using relay mechanism • Minimise mobile stations’ energy consumption by selection of station with highest energy level Goal of my investigation • Implementation of WRCP protocol in Madwifi driver

  3. Presentation scheme Analysis and capabilities of WRCP protocol WiFi driver requirements for implementation MadWiFi driver review Changes in MadWiFi driver Summary Future tasks WRCP protocol elements implementation in MadWiFi driver

  4. Analysis and capabilities of WRCP protocol Routing protocol for mobile Ad-hoc networks Metrics used by protocol for route selection: Received signal strength (SNR, Signal-to-Noise Ratio) Battery energy level of selected node Information about route to reach the Access Point Relay mechanism WRCP protocol elements implementation in MadWiFi driver

  5. WRCP Protocol Node 2 Node 1 Node 6 Access Point Node 3 Data Data ACK Data ACK Node 1 Node 3 ACK Node 6 Router Data ACK Data ACK Node 4 Node 5 Data Time ACK Access Point WRCP protocol elements implementation in MadWiFi driver

  6. WiFi driver requirements Open- Source software Easy to modify Widely available MadWiFi WRCP protocol elements implementation in MadWiFi driver

  7. MadWiFi driver review Source code divided into functional parts IEEE 802.11 standard part is most interesting Files responsible for various functions ieee80211output.c ieee80211_power.c ieee80211_rate.c WRCP protocol elements implementation in MadWiFi driver

  8. Source code examples struct ieee80211_frame { u_int8_t i_fc[2]; __le16 i_dur; u_int8_t i_addr1[IEEE80211_ADDR_LEN]; u_int8_t i_addr2[IEEE80211_ADDR_LEN]; u_int8_t i_addr3[IEEE80211_ADDR_LEN]; u_int8_t i_seq[2]; } __packed; #define IEEE80211_FC0_SUBTYPE_ASSOC_REQ 0x00 #define IEEE80211_FC0_SUBTYPE_ASSOC_RESP 0x10 #define IEEE80211_FC0_SUBTYPE_REASSOC_REQ 0x20 #define IEEE80211_FC0_SUBTYPE_REASSOC_RESP 0x30 #define IEEE80211_FC0_SUBTYPE_BEACON 0x80 WRCP protocol elements implementation in MadWiFi driver

  9. MadWiFi code changes New frame subtype Designing functions processing input and output data Building structures containing WRCP data WRCP protocol elements implementation in MadWiFi driver

  10. Functions processing data if (received frame is for WRCP protocol) { move pointer; read timestamp; save timestamp in structure; move pointer; read information about neighbour nodes; save information about neighbour nodes in structure; move pointer; read information about energy level; save information about energy level; } int build_frame() { get own battery status; save own battery status in frame; move pointer; get information about neighbour nodes; save information about neighbour nodes; return created frame address; } WRCP protocol elements implementation in MadWiFi driver

  11. Summary Madwifi – good choice for WRCP implementation Necessity of programming in C WRCP must be transparent to MadWiFi mechanisms Changes compatible with IEEE 802.11 standard Possibility to quickly test results Enhanced MadWiFi driver possibilities WRCP protocol elements implementation in MadWiFi driver

  12. Go ahead MadWiFi code familiarization WRCP protocol elements implementation Test of WRCP mechanism propriety WRCP examination Thesis WRCP protocol elements implementation in MadWiFi driver

  13. Thankyou for attention Przemyslaw Korzynski WRCP protocol elements implementation in MadWiFi driver Tytuł 13/ilość stron

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