| Open question | Company | What they push | TDoc |
|---|---|---|---|
| How should NTN-to-terrestrial downlink coexistence be modelled? | vivo | vivo proposes TR 38.863 Scenario 3 unchanged as the baseline, scaling the single-satellite adjacent-channel interference term for aggregation. | R4-2611099 noted |
| AST SpaceMobile | AST SpaceMobile argues for a noise-limited terrestrial victim model. | R4-2610548 noted | |
| Verizon (with AST) | Verizon, with AST, says the TR 38.863 co-channel-limited victim model hides satellite adjacent-channel interference, giving too low an ACLR requirement for NTN. | R4-2611983 noted |
RCR Wireless News reporting from 2026-06-30 to 2026-09-25, next to the same companies' RAN4 #120 TDocs. Quotes are matched against the linked article. The pairing is Scout's reading, not a claim about why a TDoc was written.
In public: RCR reports that AT&T, Verizon and T-Mobile US agreed in principle on a joint venture for direct-to-device service. (RCR Wireless News, Kelly Hill, 2026-07-13, link)
In 3GPP: Verizon, with AST as co-submitter, says the TR 38.863 victim model hides adjacent-channel interference from satellites into rural terrestrial networks, giving too low an ACLR requirement for the satellite side. (R4-2611983, register: noted)
Reading: Verizon agreed in principle to a direct-to-device venture and, separately, questions the RAN4 victim model. No coexistence decision is in the evidence.
In public: GSMA Intelligence, as reported by RCR, counts "39 planned operator partnerships despite an initial constellation of seven satellites." (RCR Wireless News, Kelly Hill, 2026-07-13, link)
In 3GPP: AST SpaceMobile argues for a noise-limited terrestrial victim model in TN-NTN coexistence studies, and AST is listed as co-submitter on Verizon's contribution. (R4-2610548, register: noted)
Reading: AST SpaceMobile's own contribution and the Verizon contribution it co-signed both question the interference-limited victim model. Both were noted.
In public: RCR writes that "Amazon's pending $11.57 billion acquisition of Globalstar brings spectrum rights, satellite assets" and telco relationships. (RCR Wireless News, James Blackman, 2026-07-29, link)
In 3GPP: Amazon co-signed, with Globalstar and Skyworks, Apple's CR adding the PC2 power class for NTN band n254 to TS 38.101-5 (Rel-20). (R4-2612715, register: endorsed at R4-120, not yet agreed)
Reading: Apple leads the CR, with Amazon and Globalstar (whose acquisition by Amazon is pending) as co-submitters. The register ties n254 to no operator.
In public: RCR reports "German automaker BMW has just demonstrated voice over satellite with Viasat". (RCR Wireless News, James Blackman, 2026-07-17, link)
In 3GPP: Viasat's draft CR adding the 3 MHz channel for PC3 UEs in n250, n251 and n253, and its draft CR with Qualcomm adding PC1 and PC2 at 3 MHz in those bands. (R4-2610031, R4-2612717, register: both endorsed at R4-120, not yet agreed)
Reading: Viasat submitted both endorsed draft CRs. The register titles do not say which devices they target.
Full brief with every quote, source and caveat: HTML · PDF
Coverage: RAN1 #126, RAN2 #135, RAN4 #120 (Maastricht, 2026-08-24 to 2026-08-28), topic agenda items only. Scout read 48 recorded decisions and 561 company positions or passages; the full brief cites 17 TDocs and shows each verbatim quote, matched against the TDoc text. Summaries are Scout's reading. Register status not treated means the meeting recorded no decision on the document, not that it was rejected. Not covered: plenary decisions after the meeting, email discussions.
TDoc links go to the 3GPP file server.
More briefs: all 3GPP Scout meeting briefs · 3gppscout.com