Rohde & Schwarz and Qualcomm verify 3GPP Rel. 17 power-saving feature
Rohde & Schwarz and Qualcomm have completed the first verification of the 3GPP Release 17 Search Space Set Group Switching (SSSG) conformance test case. This milestone supports the transition of 5G power-saving features from standardization to commercial deployment and provides feedback to 3GPP RAN5.
Key Takeaways
- Verification utilized the R&S CMX500 5G one-box signaling tester and Qualcomm X105 5G Modem-RF
- SSSG reduces device power consumption by optimizing how user equipment monitors 5G NR control channels
- Test results led to a formal change request submission to 3GPP RAN5 to improve underlying conformance specifications
- Successful validation of TS 38.523-1 TC 7.1.1.12.5 marks a milestone for the 5G device certification ecosystem
Why It Matters
This verification signals that advanced power-efficiency standards are moving from theoretical specifications into the commercial hardware pipeline. For the streaming industry, SSSG technology directly addresses the high battery drain associated with 5G NR activity, potentially extending playback times for mobile video consumers. By optimizing control channel monitoring, the feature allows devices to maintain high-speed connectivity without unnecessary radio resource consumption. As these conformance tests become standardized, expect a faster rollout of 5G handsets that can handle sustained high-bitrate streaming with improved thermal and battery performance. Watch for 3GPP RAN5 to finalize these test specifications, which will trigger broader adoption across the wireless chipset ecosystem.
Additional Context
Rohde & Schwarz has been expanding its 5G conformance testing portfolio across multiple 3GPP releases. In early 2025, the company announced that its CMX500 platform had been accepted by the Global Certification Forum for 5G NR conformance testing, adding to an already extensive list of validated test cases spanning FR1 and FR2 frequency ranges. This broader platform acceptance provides the infrastructure foundation on which specific feature verifications like SSSG are built, and it positions Rohde & Schwarz as a key gatekeeper for commercial 5G device readiness.
On the chipset side, Qualcomm has been integrating 3GPP Release 17 power-saving features into its modem roadmap ahead of commercial availability. Qualcomm's Snapdragon X80 modem, announced in February 2024, was the first to incorporate Release 17 enhancements including improved power management for 5G NR connections, targeting both smartphone and fixed wireless access form factors. The X105 modem referenced in the SSSG verification represents the next step in that lineage, and Qualcomm's early engagement with conformance testing suggests the company aims to have power-saving features validated well before OEM design-in cycles begin for 2026 and 2027 handsets.
The 3GPP Release 17 specification itself introduced several power-saving mechanisms beyond SSSG, including connected-mode discontinuous reception enhancements and wake-up signal improvements. A 3GPP RAN5 working group report from March 2025 outlined the timeline for finalizing conformance test specifications for Release 17 power-saving features, with full test suite completion targeted for late 2025. Independent testing organizations have noted that SSSG switching reduces control channel monitoring overhead by allowing devices to toggle between search space set groups based on traffic activity, which in lab measurements has shown reductions in device power consumption of up to 25 percent during low-throughput periods compared to Release 15 baselines.
Read full article at microwavejournal.com
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