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.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Hybrid Automatic Repeat reQuest | 2 |
| HARQ canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5770931 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: HARQ Context triple: [HSDPA, feature, HARQ]
-
A.
Hamming code
Hamming code is a family of error-detecting and error-correcting binary codes that enable the automatic detection and correction of single-bit errors in transmitted or stored data.
-
B.
LDPC
LDPC (Low-Density Parity-Check) is a powerful class of linear error-correcting codes known for near-Shannon-limit performance and widespread use in modern high-throughput communication systems.
-
C.
PDCP
PDCP (Packet Data Convergence Protocol) is a key LTE/E-UTRAN layer responsible for header compression, security (ciphering and integrity), and in-sequence delivery of user and control plane data between the radio network and the core.
-
D.
Hamming
Hamming is a surname most notably associated with Richard W. Hamming, an American mathematician and computer scientist known for his pioneering work in error-correcting codes and numerical methods.
-
E.
HSDPA
HSDPA (High-Speed Downlink Packet Access) is a 3G mobile telephony protocol that significantly increases data download speeds and network capacity for users on compatible cellular networks.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: HARQ Target entity description: HARQ (Hybrid Automatic Repeat reQuest) is a wireless communication protocol technique that improves data reliability and throughput by combining error-correction coding with retransmissions.
-
A.
Hamming code
Hamming code is a family of error-detecting and error-correcting binary codes that enable the automatic detection and correction of single-bit errors in transmitted or stored data.
-
B.
LDPC
LDPC (Low-Density Parity-Check) is a powerful class of linear error-correcting codes known for near-Shannon-limit performance and widespread use in modern high-throughput communication systems.
-
C.
PDCP
PDCP (Packet Data Convergence Protocol) is a key LTE/E-UTRAN layer responsible for header compression, security (ciphering and integrity), and in-sequence delivery of user and control plane data between the radio network and the core.
-
D.
Hamming
Hamming is a surname most notably associated with Richard W. Hamming, an American mathematician and computer scientist known for his pioneering work in error-correcting codes and numerical methods.
-
E.
HSDPA
HSDPA (High-Speed Downlink Packet Access) is a 3G mobile telephony protocol that significantly increases data download speeds and network capacity for users on compatible cellular networks.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
error control mechanism
ⓘ
wireless communication protocol technique ⓘ |
| abbreviationOf |
Hybrid Automatic Repeat reQuest
ⓘ
linked to:
HARQ
|
| 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
ⓘ
linked to:
HARQ
|
| 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 ⓘ |
| requires | feedback channel ⓘ |
| tradeoff |
increased latency due to retransmissions
ⓘ
increased receiver complexity ⓘ |
| usedByStandard |
3GPP 5G NR
ⓘ
linked to:
5G NR
3GPP LTE ⓘ
linked to:
LTE
HSPA ⓘ |
| usedIn |
5G NR
ⓘ
LTE ⓘ WiMAX ⓘ
linked to:
IEEE 802.16
cellular networks ⓘ wireless communication systems ⓘ |
| uses |
channel coding
ⓘ
cyclic redundancy check ⓘ forward error correction ⓘ |
| worksOver | fading channels ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: HARQ Description of subject: HARQ (Hybrid Automatic Repeat reQuest) is a wireless communication protocol technique that improves data reliability and throughput by combining error-correction coding with retransmissions.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.