Mobile Communications IEEE Wireless Technologies (basic - PowerPoint PPT Presentation

IEEE Wireless Tech 1 Mobile Communications IEEE Wireless Technologies (basic connectivity perspective) Manuel P. Ricardo Faculdade de Engenharia da Universidade do Porto

IEEE Wireless Tech 2 ♦ What are the relevant IEEE wireless technologies? ♦ What are the physical and link layer characteristics of these technologies? technologies? ♦ How can I make access networks (connectivity perspective) using the IEEE wireless networks?

IEEE Wireless Tech 3 IEEE Standards • 802.1 - Higher Layer LAN Protocols • 802.3 - Ethernet • 802.11- Wireless LAN (WLAN) • 802.15 - Wireless Personal Area Network (WPAN) • 802.16 - Broadband Wireless Access (WMAN) • 802.20 - Mobile Broadband Wireless Access (MBWA) • 802.22 - Wireless Regional Area Networks

IEEE Wireless Tech 4 Main IEEE 802.11 Standards ♦ IEEE 802.11, 1999 Edition » Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications ♦ IEEE 802.11b-1999 » Higher speed Physical Layer (PHY) extension in the 2.4 GHz band » Higher speed Physical Layer (PHY) extension in the 2.4 GHz band ♦ IEEE 802.11g-2003 » Further Higher-Speed Physical Layer Extension in the 2.4 GHz Band ♦ IEEE 802.11a-1999 » High-speed Physical Layer in the 5 GHz band

IEEE Wireless Tech 5 Main Active 802.11 Projects ♦ P802.11k-Radio Resource Measurements of WLANs » Scope: This project will define Radio Resource Measurement enhancements to provide interfaces to higher layers for radio and network measurements. ♦ P802.11n-Enhancements for Higher Throughput » Scope: The scope of this project is to define an amendment that shall define standardized modifications to both the 802.11 physical layers (PHY) and the 802.11 Medium Access Control Layer (MAC) so that modes of operation can be enabled that are capable of much higher throughputs, with a maximum throughput of at least 100Mbps, as measured at the MAC data service access point (SAP). ♦ P802.11p-Wireless Access for Vehicular Environments Scope: The scope of the proposed project is to create an amendment of IEEE 802.11 to support communication between Scope: The scope of the proposed project is to create an amendment of IEEE 802.11 to support communication between » » vehicles and the roadside and between vehicles while operating at speeds up to a minimum of 200 km/h for communication ranges up to 1000 meters. The amendment will support communications in the 5 GHz bands; specifically 5.850-5.925 GHz band within North America with the aim to enhance the mobility and safety of all forms of surface transportation, including rail and marine. Amendments to the PHY and MAC will be limited to those required to support communications under these operating environments within the 5 GHz bands. ♦ P802.11r-Fast BSS – Transition » Scope: The scope of this project are enhancements to the 802.11 Medium Access Control (MAC) layer to minimize or eliminate the amount of time data connectivity between the Station (STA) and the Distribution System (DS) is absent during a Basic Service Set (BSS) transition, limited to the state necessary for the operation of the MAC. This Project Authorization Request (PAR) will apply only to the STA<->Access Point (AP) state within the same Extended Service Set (ESS), and will not apply to the Independent Basic Service Set (IBSS) case. Security must not be decreased as a result of the enhancement. Timing criteria and timing conditions will be defined by the Task Group. (See also section 7.4) ♦ P802.11s-Mesh Networking » Scope: The scope of this project is to develop an IEEE 802.11 Extended Service Set (ESS) Mesh with an IEEE 802.11 Wireless Distribution System (WDS) using the IEEE 802.11 MAC/PHY layers that supports both broadcast/multicast and unicast delivery over self-configuring multi-hop topologies.

IEEE Wireless Tech 6 Main IEEE 802.16 Standards ♦ IEEE 802.16-2004 » Air Interface for Fixed Broadband Wireless Access Systems ♦ IEEE 802.16.2-2004 » Coexistence of Fixed Broadband Wireless Access Systems ♦ IEEE 802.16e-2005 ♦ IEEE 802.16e-2005 » Air Interface for Fixed and Mobile Broadband Wireless Access Systems Amendment for Physical and Medium Access Control Layers for Combined Fixed and Mobile Operation in Licensed Bands