Cisco? announced a definitive agreement to purchase Richardson, TX-based Navini Networks, Inc. a leader in the Mobile WiMAX 802.16e-2005 broadband wireless industry. Navini is a pioneer in the integration of "Smart Beamforming" technologies with Multi-Input Multi-Output (MIMO) antennas, a combination that improves the performance and range for WiMAX services and lowers the overall deployment and operational costs for service providers. Navini's WiMAX products will extend Cisco's market-leading