HARQ
E545180
HARQ (Hybrid Automatic Repeat reQuest) is a wireless communication protocol technique that improves data reliability and throughput by combining error-correction coding with retransmissions.
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
error control mechanism
ⓘ
wireless communication protocol technique ⓘ |
| abbreviationOf | Hybrid Automatic Repeat reQuest NERFINISHED ⓘ |
| appliesTo | packet data transmission ⓘ |
| basedOn | Automatic Repeat reQuest ⓘ |
| benefit |
better performance at low SNR
ⓘ
robustness to fading ⓘ |
| category |
error detection and correction
ⓘ
link adaptation technique ⓘ |
| combines |
error-correction coding
ⓘ
retransmissions ⓘ |
| designGoal | maximize throughput under target error rate ⓘ |
| extends | ARQ ⓘ |
| feature |
chase combining
ⓘ
incremental redundancy ⓘ soft combining of retransmissions ⓘ |
| feedbackType |
ACK
ⓘ
NACK ⓘ |
| fullName | Hybrid Automatic Repeat reQuest NERFINISHED ⓘ |
| improves |
link robustness
ⓘ
spectral efficiency ⓘ |
| operatesAtLayer |
MAC layer
ⓘ
data link layer ⓘ |
| parameter |
HARQ process number
ⓘ
maximum number of retransmissions ⓘ redundancy version ⓘ |
| purpose |
improve data reliability
ⓘ
improve throughput ⓘ |
| reduces | packet error rate ⓘ |
| relatedTo |
ARQ
ⓘ
FEC NERFINISHED ⓘ |
| requires | feedback channel ⓘ |
| tradeoff |
increased latency due to retransmissions
ⓘ
increased receiver complexity ⓘ |
| usedByStandard |
3GPP 5G NR
NERFINISHED
ⓘ
3GPP LTE NERFINISHED ⓘ HSPA NERFINISHED ⓘ |
| usedIn |
5G NR
NERFINISHED
ⓘ
LTE NERFINISHED ⓘ WiMAX NERFINISHED ⓘ cellular networks ⓘ wireless communication systems ⓘ |
| uses |
channel coding
ⓘ
cyclic redundancy check ⓘ forward error correction ⓘ |
| worksOver | fading channels ⓘ |
Referenced by (1)
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