TD-SCDMA
E522232
TD-SCDMA is a 3G mobile telecommunications standard developed in China that uses time-division duplexing and code division multiple access to provide wireless voice and data services.
All labels observed (1)
| Label | Occurrences |
|---|---|
| TD-SCDMA canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5479501 — 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: TD-SCDMA Context triple: [IMT-2000 family, includesTechnology, TD-SCDMA]
-
A.
IMT-2000 family
The IMT-2000 family is the ITU-defined global standard framework for third-generation (3G) mobile communication systems, encompassing multiple technologies such as UMTS and CDMA2000.
-
B.
UMTS
UMTS is a third-generation (3G) mobile telecommunications system that provides higher-speed voice and data services over cellular networks.
-
C.
SC-FDMA
SC-FDMA (Single-Carrier Frequency Division Multiple Access) is a multi-carrier transmission scheme used primarily in LTE uplink that combines single-carrier characteristics with frequency-domain equalization to achieve lower peak-to-average power ratio than OFDM.
-
D.
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.
-
E.
LTE
LTE (Long Term Evolution) is a high-speed wireless communication standard for mobile devices and data terminals, widely used as the foundation of 4G 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: TD-SCDMA Target entity description: TD-SCDMA is a 3G mobile telecommunications standard developed in China that uses time-division duplexing and code division multiple access to provide wireless voice and data services.
-
A.
IMT-2000 family
The IMT-2000 family is the ITU-defined global standard framework for third-generation (3G) mobile communication systems, encompassing multiple technologies such as UMTS and CDMA2000.
-
B.
UMTS
UMTS is a third-generation (3G) mobile telecommunications system that provides higher-speed voice and data services over cellular networks.
-
C.
SC-FDMA
SC-FDMA (Single-Carrier Frequency Division Multiple Access) is a multi-carrier transmission scheme used primarily in LTE uplink that combines single-carrier characteristics with frequency-domain equalization to achieve lower peak-to-average power ratio than OFDM.
-
D.
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.
-
E.
LTE
LTE (Long Term Evolution) is a high-speed wireless communication standard for mobile devices and data terminals, widely used as the foundation of 4G cellular networks.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
3G mobile communication standard
ⓘ
mobile telecommunications standard ⓘ |
| abbreviation | TD-SCDMA NERFINISHED ⓘ |
| approvedBy | ITU NERFINISHED ⓘ |
| belongsToGeneration | 3G ⓘ |
| commercialDeploymentStart | mid-2000s ⓘ |
| commerciallyLaunchedBy | China Mobile NERFINISHED ⓘ |
| competesWith |
CDMA2000
NERFINISHED
ⓘ
WCDMA NERFINISHED ⓘ |
| designedFor |
wireless data services
ⓘ
wireless voice services ⓘ |
| developedBy |
China Academy of Telecommunications Technology
NERFINISHED
ⓘ
Datang Telecom NERFINISHED ⓘ |
| developedInCountry | China NERFINISHED ⓘ |
| evolvedInto | TD-LTE ⓘ |
| fullName | Time Division Synchronous Code Division Multiple Access NERFINISHED ⓘ |
| networkTopology | cellular network ⓘ |
| peakDownlinkRate | 2.8 Mbit/s ⓘ |
| peakUplinkRate | 2.2 Mbit/s ⓘ |
| primaryUseCase | 3G mobile phone networks ⓘ |
| radioInterfaceType | TD-CDMA NERFINISHED ⓘ |
| regionOfPrimaryDeployment | China NERFINISHED ⓘ |
| replacedBy |
4G LTE
ⓘ
LTE NERFINISHED ⓘ |
| standardFamily | IMT-2000 NERFINISHED ⓘ |
| standardizedBy |
3GPP
NERFINISHED
ⓘ
3rd Generation Partnership Project 2 NERFINISHED ⓘ |
| status | largely phased out ⓘ |
| supportedBy | China Mobile NERFINISHED ⓘ |
| supportsMobility | mobile users ⓘ |
| supportsService |
circuit-switched voice
ⓘ
packet-switched data ⓘ |
| supportsTechnology |
dynamic channel allocation
ⓘ
joint detection ⓘ smart antenna technology ⓘ |
| usesAccessMethod | synchronous CDMA ⓘ |
| usesChannelBandwidth |
1.28 MHz chip rate
ⓘ
1.6 MHz ⓘ |
| usesDuplexing | TDD ⓘ |
| usesDuplexingMethod | time-division duplexing ⓘ |
| usesDuplexMode | unpaired spectrum ⓘ |
| usesFrameStructure | time slots ⓘ |
| usesModulation |
8PSK
ⓘ
QPSK ⓘ |
| usesMultipleAccessScheme |
CDMA
ⓘ
code division multiple access ⓘ |
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: TD-SCDMA Description of subject: TD-SCDMA is a 3G mobile telecommunications standard developed in China that uses time-division duplexing and code division multiple access to provide wireless voice and data services.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.