Over the past three years, the emergence of Wi-Fi and the rising demand for ubiquitous broadband access, have converged to create a burgeoning market for public wireless networks. Mobile WiMAX is a leading solution for wireless broadband services due to its scalable architecture, vast data capacity and relatively low cost deployment. Other advantages of WiMAX include its open standards approach and user friendly IPR structure.
 

ABSi WiMAX Services:

ABSi’s Mobile WiMAX services supports several key features necessary for delivering mobile broadband services at speeds greater than 120 kilometers per hour, with QoS comparable to broadband wireline access alternatives. These key features include:

• Tolerance to Multipath and Self-Interference with subchannel orthogonality in both the DL and the UL.

• Scalable Channel Bandwidths from 1.25 to 20MHz

• Time Division Duplex (TDD) is defined for the initial mobile WiMAX profiles for its added efficiency in support of asymmetric traffic and channel reciprocity for easy support of advanced antenna systems.

• Hybrid-Automatic Repeat Request (H-ARQ) provides added robustness with rapidly changing path conditions in high mobility situations.

• Frequency Selective Scheduling and subchannelization with multiple permutation options, gives mobile WiMAX the ability to optimize
   
• Connection quality based on relative signal strengths to specific users.

• Power Conservation Management ensures power efficient operation of battery operated mobile handheld and portable devices in sleep and idle modes.

• Network-Optimized Hard Handoff (HHO) is supported to minimize overhead and achieve a handoff delay of less than 50 milliseconds.

• Multicast and Broadcast Service (MBS) combines the features of DVB-H, MediaFLO and 3GPP E-UTRA for: High data rate and coverage using a single frequency network, Flexible radio resource allocation, Low mobile device power consumption and Low channel switching time.