Understanding LTE Model Internals and Interfaces
Understanding LTE Model Internals and Interfaces
Understanding LTE Model Internals and Interfaces
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
1581 <strong>Underst<strong>and</strong>ing</strong> <strong>LTE</strong> <strong>Model</strong> <strong>Internals</strong> <strong>and</strong> <strong>Interfaces</strong>HARQ Process Management on DL0 1 2 3 4 5 6 7 8 9 10New tx:process 0New tx:process 1NACK:process 0NACK:process 1RTX process0 failed due toinsufficientresources!Can happenfor any ofPDSCH,PUSCH orPDCCHRTXprocess 0succeededRTXprocess 1pushed tonextsubframeRTXprocess 1succeeded• In the above example, HARQ process 1 transmission occurred after 9 subframes instead of 8.• The minimum gap between transmissions on a process is 8 subframes. It can be indefinitely larger thanthat• It is extremely unlikely that HARQ RTX blocked for 8 consecutive subframes, in which case, an openHARQ process for transmission cannot be found at all!• Appendix D gives a flow chart along with function names showing how DL HARQ retransmissions areservedCONFIDENTIAL ─ RESTRICTED ACCESS: This information may not be disclosed, copied, or transmitted in any format without the prior written consent of OPNET Technologies, Inc. © 2010 OPNET Technologies, Inc.51
Change language