Cdma2000 Release C (1xEV-DV) Status and Summary

Outline Cdma2000 1xEV-DV Release C Overview –Design compatibilities –Release C enhancements to cdma2000 –Performance Status and Plans Potential Harmonization Topics

Current 1xEV-DV design maintains backward compatibility with previous cdma2000 and IS-95 releases, i.e. existing channels are supported in 1xEV-DV Thus, a base station supporting an 1xEV-DV forward link can also support mobile stations conforming to –TIA/EIA/IS-95-A –TIA/EIA/IS-95-B –cdma2000 Revision 0 –cdma2000 Revision A –cdma2000 Revision B Design Compatibilities of 1xEV-DV

Key Aspects of Current 1xEV-DV Forward Link Design Fully maintains existing cdma2000 channels and signaling structure Set of fixed packet sizes (408, 792, 1560, 2328, 3096, and 3864 bits) Variable packet durations (1.25, 2.5, and 5 ms) Channel sensitive scheduling C/I feedback rate of 800 Hz Scheduling time granularity of 1.25 ms Asynchronous retransmissions Adaptive modulation and coding with higher-level modulation schemes (QPSK, 8-PSK, and 16QAM) Variable duration code-division multiplexed common control channels (1.25, 2.5, and 5 ms) Synchronous acknowledgements Using existing cdma2000 turbo codes, Quasi-Complementary Turbo Code (QCTC) interleaving TDM/CDM capability included

New Forward Link Channels Forward Packet Data Channel (F-PDCH) –Shared by packet data users –Consist of a number of code-division-multiplexed quadrature Walsh subchannels, each spread by 32-ary Walsh function Forward Packet Data Control Channel (F-PDCCH) –Used to send the scheduled user’s MAC ID, ARQ Channel ID, Encoder Packet Size, and Sub-packet ID for most of the time –Used to broadcast available Walsh space information when needed –Second, coupled F-PDCCH enables TDM/CDM

CDMA2000 Forward Link Pilot Channels Sync Channel Paging Channels Common Control Channels Traffic Channels 0-1 Channel Power Control Subchannel 0-7 Supplemental Code Channels (RC 1-2) 0-2 Supplemental Channels (RC 3-10) Broadcast Control Channels Quick Paging Channels Common Power Control Channels Common Assignment Channels Forward Pilot Channel Transmit Diversity Pilot Channel Auxiliary Pilot Channels Aux. Transmit Diversity Pilot Channels 0-1 Dedicated Control Channel Packet Data Control Channels 0-1 Packet Data Channels (Radio Configuration 10) Fundamental Releases 0, A, B, C for Spreading Rate 1 (SR1 aka 1X) = Release C (1xEV-DV) FORWARD CDMA CHANNEL for Spreading Rate 1 (SR1)

Reverse Link Channels that Support Forward Link Packet Data Operation Reverse ACK Channel (R-ACKCH) –ACK Channel to indicate to the base station whether a sub-packet transmitted on the F-PDCH was received successfully or not Reverse Channel Quality Indicator Channel (R-CQICH) –Used by the mobile station to indicate to the base station the channel quality measurements of the best serving sector

CDMA2000 Reverse Link Releases 0, A, B, C for Spreading Rate 1 (SR1 aka 1X) Access Channel Reverse Traffic Channel RC1 or 2 Reverse Fundamental Channel 0 to 7 Reverse Supplemental Code Channels Enhanced Access Channel Operation Reverse Pilot Channel Enhanced Access Channel Reverse Common Channel Operation Reverse Pilot Channel Reverse Common Control Channel Reverse Traffic Channel Operation (RC3 to 6) Reverse Pilot Channel 0 or 1 Reverse Dedicated Code Channels 0 or 1 Reverse Fundamental Channel 0 or 1 Reverse Supplemental Channels 0 or 1 Reverse Power Control Channel 0-1 Reverse Acknowledgement Channel 0-1 Reverse Channel Quality Indicator Channel = Release C (1xEV-DV) REVERSE CDMA CHANNEL For Spreading Rate 1 (SR1)

Cdma2000 Release C Basic Operation (1) Rate Controlled Service (e.g. delay tolerant data) (1) 1X-EV-DV common carrier BS (2) Measure common continuous CDM pilot (1) Power Controlled Service (e.g. voice, real-time data) (5) At time k, BS allocates P-P PC ’ = P RC ’[k] to Rate Controlled users (5’) Data and Control Information (3’) Send back C/I to `best’ sector (3) Send back FL PC bits Legend : P PC = Power for power controlled service P RC = Power for rate controlled service V i = priority function for user i (2’) Broadcast Walsh Space Update as often as needed (4) BS estimates P PC [k+1]  and determines P RC [k+1] (4’) BS determines a V i [k+1] for all users i, and determines which rate controlled user will be transmitted (6) Send back Ack/Nak

Cdma2000 Release C Performance Summary Maintains current cdma2000 coverage –Reuse existing cell sites 3.09 Mbps peak forward link data rate Average system wide throughput ranges form 420 kbps to 1.7 Mbps –Traffic models –Channel models kbps peak reverse link data rate

Cdma2000 Status and Plans in 3GPP2 Cdma2000 Release C (1xEV-DV) approved for SDO review May 28, 2002 Submitted to ITU WP-8F and referenced to IMT2000 Currently revisiting evaluation methodology document Drafting of Cdma2000 Release D development schedule Technologies under consideration for next release : –Cdma2000 Enhancements –Reverse and Forward Link –Antenna Technologies –Broadcast/Multicast –Etc. 3GPP2 Vision/Evolution Workshop Scheduled July 2002 –Expected focus (Core Network) –Y’all come attend!

Potential Harmonization Topics QoS –Parameters to pass around the network? –Studies to conduct? –Etc.