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1x-EV-DV Reverse Link Summary & Status

1x-EV-DV Reverse Link Summary & Status. An ad-hoc group in 3GPP2 has been working on selecting a framework for the Reverse Link since May 01. Five different Reverse Link proposals are being considered by various companies “Winning” proposal may be a combination of those being considered

jonathon-erik
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1x-EV-DV Reverse Link Summary & Status

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  1. 1x-EV-DV Reverse Link Summary & Status • An ad-hoc group in 3GPP2 has been working on selecting a framework for the Reverse Link since May 01. • Five different Reverse Link proposals are being considered by various companies • “Winning” proposal may be a combination of those being considered • A number of additional proposals are being considered as component technologies that may be included regardless of which proposal is selected • Framework selection for the Reverse Link is targeted for Dec. 01, with all specification work targeted for completion to meet the May 02 deadline

  2. Main Features of Reverse Link Proposals • Backward compatibility with IS-2000-1x • Shared packet data channel (fast scheduling) vs. autonomous scheduling (i.e., infinite allocation) as multiple scheduling options • Fixed vs. variable frame sizes (multi-frames are also possible) • Variable rate operation and congestion control • Control signaling on Forward Link to support Reverse Link • New control channels (w.r.t. IS-2000-1x) to enable fast RL operation • Adaptive Modulation and Coding • Up to 2.4 Mbps data rates in 1.25 MHz deployment bandwidth • Soft Handoff • Interference Cancellation • Physical Layer retransmission (e.g., Hybrid ARQ) • Quasi-Active State for packet data applications to improve power consumption • Statistical multiplexing (time/code domains) to improve capacity

  3. Reverse Link Component Technology Proposals • Variable Rate and Congestion Control (either separately or jointly applied) • Spatial/Time Diversity (e.g., STS, MIMO) and antenna diversity at BS to improve performance and system capacity • Hybrid ARQ (e.g. Chase combining) and Adaptive Incremental Redundancy to improve performance • Spectrally/Spatially Efficient Spreading Codes to improve performance and capacity • Enhanced Reverse Access Channel (with Adaptive Modulation and Coding) for efficient transmission of short data packets

  4. Status of Reverse Link Proposal Evaluation • Performance results for the various proposals are being examined prior to reaching a framework solution for the Reverse Link • Merits of scheduling approaches (“fast” vs. “autonomous” scheduling) are being examined. A combination of both approaches is possible • Evaluation of RL proposals expected to be complete in Dec. 01 Status of Component Technology Evaluation • Performance results for various component technology proposals are being examined • Evaluation of component technology proposals expected to be complete in January 02

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