ITU-R M.1457
E522230
ITU-R M.1457 is an ITU Radiocommunication Sector recommendation that defines the detailed radio interface specifications for third-generation (3G) IMT-2000 mobile communication systems.
All labels observed (2)
| Label | Occurrences |
|---|---|
| ITU-R M-series mobile service recommendations | 1 |
| ITU-R M.1457 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5479493 — 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: ITU-R M.1457 Context triple: [IMT-2000 family, standardizedIn, ITU-R M.1457]
-
A.
ITU-T G.8275.1
ITU-T G.8275.1 is a telecommunications standard that specifies a profile for precise time and phase synchronization over packet networks, particularly for mobile and other time-sensitive services.
-
B.
ITU-T G.8265.1
ITU-T G.8265.1 is an international telecommunications standard that specifies the use of packet-based timing protocols over IP networks to distribute frequency synchronization, particularly for mobile and packet-based services.
-
C.
ITU-T G.8264
ITU-T G.8264 is an international telecommunications standard that specifies Ethernet synchronization equipment and functions to support precise frequency and time distribution over packet networks.
-
D.
ITU-T G.8271
ITU-T G.8271 is an international telecommunication standard that defines the overall time and phase synchronization requirements and architecture for packet-based networks, particularly for mobile and other time-sensitive services.
-
E.
ITU-T G.8275
ITU-T G.8275 is an international telecommunication standard that specifies network protocols and architectures for precise time and phase synchronization over packet-based networks, particularly for mobile and broadband services.
- 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: ITU-R M.1457 Target entity description: ITU-R M.1457 is an ITU Radiocommunication Sector recommendation that defines the detailed radio interface specifications for third-generation (3G) IMT-2000 mobile communication systems.
-
A.
ITU-T G.8275.1
ITU-T G.8275.1 is a telecommunications standard that specifies a profile for precise time and phase synchronization over packet networks, particularly for mobile and other time-sensitive services.
-
B.
ITU-T G.8265.1
ITU-T G.8265.1 is an international telecommunications standard that specifies the use of packet-based timing protocols over IP networks to distribute frequency synchronization, particularly for mobile and packet-based services.
-
C.
ITU-T G.8264
ITU-T G.8264 is an international telecommunications standard that specifies Ethernet synchronization equipment and functions to support precise frequency and time distribution over packet networks.
-
D.
ITU-T G.8271
ITU-T G.8271 is an international telecommunication standard that defines the overall time and phase synchronization requirements and architecture for packet-based networks, particularly for mobile and other time-sensitive services.
-
E.
ITU-T G.8275
ITU-T G.8275 is an international telecommunication standard that specifies network protocols and architectures for precise time and phase synchronization over packet-based networks, particularly for mobile and broadband services.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
ITU-R Recommendation
ⓘ
technical standard ⓘ |
| appliesTo |
3G mobile communication systems
ⓘ
IMT-2000 ⓘ
linked to:
IMT-2000 family
|
| belongsToSeries |
ITU-R M-series mobile service recommendations
ⓘ
linked to:
ITU-R M.1457
|
| category |
IMT-2000 specification
ⓘ
mobile communication standard ⓘ |
| defines |
channel bandwidths for IMT-2000 radio interfaces
ⓘ
conformance requirements for IMT-2000 radio interfaces ⓘ detailed radio interface specifications for IMT-2000 ⓘ link budget and system parameters for IMT-2000 ⓘ minimum performance requirements for IMT-2000 radio interfaces ⓘ modulation schemes for IMT-2000 radio interfaces ⓘ multiple access methods for IMT-2000 radio interfaces ⓘ radio interface standards for third-generation mobile systems ⓘ radio network aspects for IMT-2000 ⓘ |
| focusesOn | terrestrial mobile services ⓘ |
| hasVersion | multiple revisions over time ⓘ |
| issuedBy |
ITU Radiocommunication Sector
ⓘ
ITU-R ⓘ
linked to:
ITU Radiocommunication Sector
|
| language | English ⓘ |
| maintainedBy |
ITU-R Study Group 5
ⓘ
linked to:
ITU-R Study Groups
|
| partOf | International Telecommunication Union ⓘ |
| purpose |
to enable worldwide roaming and compatibility for IMT-2000
ⓘ
to provide a common global framework for 3G radio interfaces ⓘ |
| region | global ⓘ |
| relatedStandard |
3GPP specifications for UMTS
ⓘ
3GPP2 specifications for CDMA2000 ⓘ ITU-R M.1036 ⓘ ITU-R M.1225 ⓘ |
| relatedTo |
3G mobile networks
ⓘ
IMT-2000 ⓘ
linked to:
IMT-2000 family
IMT-2000 terrestrial radio interfaces ⓘ
linked to:
IMT-2000 family
radio interface technologies (RITs) ⓘ |
| scope |
global third-generation mobile systems
ⓘ
terrestrial component of IMT-2000 radio interfaces ⓘ |
| standardizes |
CDMA-based IMT-2000 radio interfaces
ⓘ
FDMA-based IMT-2000 radio interfaces ⓘ TDMA-based IMT-2000 radio interfaces ⓘ multiple IMT-2000 radio interface families ⓘ |
| technologyGeneration | 3G ⓘ |
| updatedBy | later revisions of ITU-R M.1457 ⓘ |
| usedFor |
equipment and network interoperability for IMT-2000
ⓘ
global harmonization of 3G radio interfaces ⓘ international spectrum planning for IMT-2000 ⓘ |
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: ITU-R M.1457 Description of subject: ITU-R M.1457 is an ITU Radiocommunication Sector recommendation that defines the detailed radio interface specifications for third-generation (3G) IMT-2000 mobile communication systems.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: ITU-R M.1457