1. Introduction2. Wireless Communication – Basics3. Radio Spectrum Regulation4. Mesh Networks – Basics5. IEEE 802.11 Wireless Local Area Networks6. IEEE 802.15 Wireless Personal Area Networks7. IEEE 802.16 Wireless Metropolitan Area Networks8. IEEE 802.11, 802.15 and 802.16 for Mesh Networks9. Coexistence in IEEE 802 Networks10. Broadband Cellular Multi-hop Networks11. Mutual Integration and Cooperation of Radio Access Networks12. Future Mesh Technologies13. Cognitive Radio and Spectrum Sharing14. Conclusions