hash stringlengths 32 32 | doc_id stringlengths 5 12 | section stringlengths 5 1.47k | content stringlengths 0 6.67M |
|---|---|---|---|
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.9 Solution 2A
| Editor’s note – This section will be updated in the next revision
|
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.9.1 Solution description
| Solution 2A exploits downlink signals from one or more satellites to estimate UE position using DL-TDOA, similar to GNSS but relying on existing NR signals (e.g., SSB/CSI-RS/PRS).
|
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.9.2 Relevant scenario
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.9.3 Specification Impact
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.9.4 Performance evaluation
| For the evaluation of DL-only UE-based positioning method, using DL-TDOA, the following evaluation assumptions and parameters are being considered.
Table 7.1.9-1: Evaluation assumptions and parameters for the evaluation of DL-only UE-based positioning method
Parameter
Description/Value
Satellite Orbit
As per RAN1#... |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.9.5 Signaling overhead
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.9.6 Complexity evaluation
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.9.7 Coexistence with legacy UEs
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.10 Solution 2B
| Editor’s note – This section will be updated in the next revision
|
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.10.1 Solution description
| Solution 2B proposes that the UE performs multiple random access attempts, each using different time and frequency pre-compensation values derived from alternative reference points within its uncertainty region. It is expected that the random access preamble of at least one attempt falls within the gNB’s detection win... |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.10.2 Relevant scenario
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.10.3 Specification Impact
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.10.4 Performance evaluation
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.10.5 Signalling overhead
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.10.6 Complexity evaluation
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.10.7 Coexistence with legacy UEs
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.11 Solution 2C
| Editor’s note – This section will be updated in the next revision
|
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.11.1 Solution description
| Solution 2C suggests that the network broadcast explicit time information (timestamps) that UEs can use to calibrate their local clocks. By receiving a “current network time” via SIB or another broadcast control message, a GNSS-less UE can compare it to its own clock to reduce offset and drift. In effect, this replicat... |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.11.2 Relevant scenario
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.11.3 Specification Impact
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.11.4 Performance evaluation
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.11.5 Signalling overhead
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.11.6 Complexity evaluation
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.11.7 Coexistence with legacy UEs
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.12 Solution 2D
| Editor’s note – This section will be updated in the next revision
|
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.12.1 Solution description
| Solution 2D has the network provide a common timing and frequency reference—such as a reference location, a common Timing Advance (TA), and/or a Doppler offset—that UEs use to pre-compensate their uplink. Rather than depending on each UE’s unknown actual position, all UEs align to a shared assumed reference (e.g., the ... |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.12.2 Relevant scenario
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.12.3 Specification Impact
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.12.4 Performance evaluation
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.12.5 Signalling overhead
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.12.6 Complexity evaluation
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.12.7 Coexistence with legacy UEs
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.13 Solution 2E
| Editor’s note – This section will be updated in the next revision
|
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.13.1 Solution description
| Solution 2E allows the UE to use its last valid GNSS fix, even if it is outdated, to perform PRACH time and frequency pre-compensation when GNSS is no longer available. Rather than blocking access once GNSS accuracy deteriorates, the UE continues using its most recent position/time information and tolerates the resulti... |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.13.2 Relevant scenario
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.13.3 Specification Impact
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.13.4 Performance evaluation
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.13.5 Signaling overhead
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.13.6 Complexity evaluation
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.13.7 Coexistence with legacy UEs
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.14 Solution 2F
| Editor’s note – This section will be updated in the next revision
|
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.14.1 Solution description
| Solution 2F proposes that the UE uses existing downlink signals (e.g., SSB, CSI-RS) to self-calibrate its time and frequency prior to PRACH. The UE locks its oscillator to the downlink carrier to reduce frequency offset and can leverage the timing/phase of the received signals to refine its internal timing. No explicit... |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.14.2 Relevant scenario
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.14.3 Specification Impact
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.14.4 Performance evaluation
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.14.5 Signalling overhead
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.14.6 Complexity evaluation
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.14.7 Coexistence with legacy UEs
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.15 Solution 3
| Editor’s note – This section will be updated in the next revision
|
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.15.1 Solution description
| Solution 3 uses implementation-specific receiver techniques without requiring any changes to the standard. As a result, the gNB can detect preambles arriving anywhere within an extended correlation window using a straightforward detection algorithm.
|
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.15.2 Relevant scenario
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.15.3 Specification Impact
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.15.4 Performance evaluation
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.15.5 Signaling overhead
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.15.6 Complexity evaluation
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.1.15.7 Coexistence with legacy UEs
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.2 Candidate solutions for RRC connected mode
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 7.2.1 Evaluation of solutions
| |
321ab524014ad8f3b834b73b9102f8f0 | 38.742 | 8 Conclusions and recommendations
|
Annex <F> (informative):
Change history
Change history
Date
Meeting
TDoc
CR
Rev
Cat
Subject/Comment
New version
2025-11
RAN1#123
R1-2508479
TR skeleton for study on GNSS (Global Navigation Satellite System) resilient NR-NTN (Non-Terrestrial Networks) operation
0.0.1
2026-02
RAN1#124
R1-26017... |
92904afb872b798c877d70a5d955b6f5 | 38.763 | 1 Scope
| The present document is a technical report for Over-the-Air (OTA) test methods for NR NTN above 10GHz.
This TR targets to define a full set of OTA test methods to cover different NTN UE types of operation above 10GHz.
|
92904afb872b798c877d70a5d955b6f5 | 38.763 | 2 References
| The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
- References are either specific (identified by date of publication, edition number, version number, etc.) or non‑specific.
- For a specific reference, subsequent revisions do not apply.
-... |
92904afb872b798c877d70a5d955b6f5 | 38.763 | 3 Definitions of terms, symbols and abbreviations
| |
92904afb872b798c877d70a5d955b6f5 | 38.763 | 3.1 Terms
| For the purposes of the present document, the terms given in 3GPP TR 21.905 [1] and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in 3GPP TR 21.905 [1].
Definition format (Normal)
<defined term>: <definition>.
Fixed VSAT: VSAT used in FSS s... |
92904afb872b798c877d70a5d955b6f5 | 38.763 | 3.2 Symbols
| For the purposes of the present document, the following symbols apply:
Symbol format (EW)
<symbol> <Explanation>
|
92904afb872b798c877d70a5d955b6f5 | 38.763 | 3.3 Abbreviations
| For the purposes of the present document, the abbreviations given in 3GPP TR 21.905 [1] and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in 3GPP TR 21.905 [1].
Abbreviation format (EW)
EIRP Equivalent Isotropically Radiated... |
92904afb872b798c877d70a5d955b6f5 | 38.763 | 4 General
| |
92904afb872b798c877d70a5d955b6f5 | 38.763 | 4.1 Device types
| <Editor’s note: Detailed structure of the subclause is TBD. >
The test methods developed in this specification target to cover the required device types to meet requirements of 3GPP TS 38.101-5[2] above 10GHz.
The test methods development will first focus on VSAT with VSAT and antenna dimensions 65 cm x 65 cm x 15 c... |
92904afb872b798c877d70a5d955b6f5 | 38.763 | 4.2 Testing configuration
| <Editor’s note: Detailed structure of the subclause is TBD. >
|
92904afb872b798c877d70a5d955b6f5 | 38.763 | 4.3 Testing bands
| <Editor’s note: Detailed structure of the subclause is TBD. >
The frequency ranges in which NTN satellite can operate according to this version of the specification are identified as described in Table 4.3-1.
Table 4.3-1: Definition of NTN frequency ranges
Frequency range designation
Corresponding frequency range
... |
92904afb872b798c877d70a5d955b6f5 | 38.763 | 5 Performance metrics
| <Editor’s note: This clause is not new metric, but just general explanation of performance metric for RF/RRM/Demod, which is highly related to test method and procedure>
|
92904afb872b798c877d70a5d955b6f5 | 38.763 | 5.1 General definition of UE RF metrics
| <Editor’s note: Detailed structure of the subclause is TBD. Including at least EIRP, EIS, TRP, TRS>
|
92904afb872b798c877d70a5d955b6f5 | 38.763 | 5.2 General definition of UE RRM metrics
| <Editor’s note: Detailed structure of the subclause is TBD. >
|
92904afb872b798c877d70a5d955b6f5 | 38.763 | 5.3 General definition of UE Demodulation metrics
| <Editor’s note: Detailed structure of the subclause is TBD. >
|
92904afb872b798c877d70a5d955b6f5 | 38.763 | 6 NTN UE positioning guidelines
| <Editor’s note: Detailed structure of the subclause is TBD. >
|
92904afb872b798c877d70a5d955b6f5 | 38.763 | 6.1 Free space
| |
92904afb872b798c877d70a5d955b6f5 | 38.763 | 7 UE RF testing methodologies
| |
92904afb872b798c877d70a5d955b6f5 | 38.763 | 7.1 General
| The testing methodologies will adopt black-box as baseline, and white-box may be considered in the future.
All the RF testing assumes that the VSAT beam direction can be controlled to a specific direction (azimuth and elevation) with reference to a declared VSAT antenna coordinate system and remains there. How to enab... |
92904afb872b798c877d70a5d955b6f5 | 38.763 | 7.2 Applicability of different test methods
| <Editor’s note: general applicability of different test methods for each RF requirements>
RAN4 agreed to select IFF method as baseline for VSAT NTN testing.
|
92904afb872b798c877d70a5d955b6f5 | 38.763 | 7.3 Indirect far field (IFF)
| <Editor’s note: need sub-clauses,>
7.4 other
<Editor’s note: need sub-clauses,>
|
92904afb872b798c877d70a5d955b6f5 | 38.763 | 8 UE RRM testing methodologies
| |
92904afb872b798c877d70a5d955b6f5 | 38.763 | 8.1 General
| |
92904afb872b798c877d70a5d955b6f5 | 38.763 | 8.2 Applicability of different test methods
| <Editor’s note: general applicability of different test methods for each RF requirements. Other methods can be further added, if needed>
|
92904afb872b798c877d70a5d955b6f5 | 38.763 | 8.2 Indirect far field (IFF)
| <Editor’s note: need sub-clauses,>
|
92904afb872b798c877d70a5d955b6f5 | 38.763 | 9 UE demodulation testing methodologies
| |
92904afb872b798c877d70a5d955b6f5 | 38.763 | 9.1 General
| |
92904afb872b798c877d70a5d955b6f5 | 38.763 | 9.2 Measurement setup
| <Editor’s note: test setup. >
|
92904afb872b798c877d70a5d955b6f5 | 38.763 | 9.3 Test metrics and procedure
| <Editor’s note: need sub-clauses >
Annex A:
UE coordinate system
Annex B:
Estimation of Measurement uncertainty
<Editor’s note: Detailed structure of the subclause is TBD. >
B.1 General
B.2 MU assessment for UE RF testing
B.3 MU assessment for UE RRM testing
B.4 MU assessment for UE Demodulation te... |
0ab65e75fc1089aa73e560eaf8cd0098 | 23.137 | 1 Scope
| The present document specifies the stage 2 of Integrated Sensing and Communication in 5G system, including architecture and function enhancements, end to end service operations and procedures based on the requirements documented in TS 22.137 [2], only focusing on aerial object (e.g., drone) detection and tracking use c... |
0ab65e75fc1089aa73e560eaf8cd0098 | 23.137 | 2 References
| The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
- References are either specific (identified by date of publication, edition number, version number, etc.) or non‑specific.
- For a specific reference, subsequent revisions do not apply.
-... |
0ab65e75fc1089aa73e560eaf8cd0098 | 23.137 | 3 Definitions and abbreviations
| |
0ab65e75fc1089aa73e560eaf8cd0098 | 23.137 | 3.1 Terms
| For the purposes of the present document, the terms given in 3GPP TR 21.905 [1] and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in 3GPP TR 21.905 [1].
Sensing Service Consumer: The entity that requests and consumes Sensing Result.
NOTE: I... |
0ab65e75fc1089aa73e560eaf8cd0098 | 23.137 | 3.2 Abbreviations
| For the purposes of the present document, the abbreviations given in 3GPP TR 21.905 [1] and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in 3GPP TR 21.905 [1].
SenE Sensing Entity
SenF Sensing Function
<ABBREVIATION> <Expa... |
0ab65e75fc1089aa73e560eaf8cd0098 | 23.137 | 4 Architecture model and concepts
| |
0ab65e75fc1089aa73e560eaf8cd0098 | 23.137 | 4.1 General concept
| The sensing architecture is based on the 5GS architecture defined in TS 23.501 [3]. The 5GS architecture for Sensing Service is supported by 5GC NFs and NG-RAN, which supports sensing services in addition to communication services. In the 5GC, this involves the introduction of a new NF, i.e. the Sensing Function (SenF)... |
0ab65e75fc1089aa73e560eaf8cd0098 | 23.137 | 4.2 Architecture
| |
0ab65e75fc1089aa73e560eaf8cd0098 | 23.137 | 4.3 Reference points
| |
0ab65e75fc1089aa73e560eaf8cd0098 | 23.137 | 4.4 Service-based interfaces
| |
0ab65e75fc1089aa73e560eaf8cd0098 | 23.137 | 4.5 Functional entities
| |
0ab65e75fc1089aa73e560eaf8cd0098 | 23.137 | 4.6 Protocol stacks
| |
0ab65e75fc1089aa73e560eaf8cd0098 | 23.137 | 4.6.1 Protocol stack for sensing control signalling
|
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.