2022 (Wa) 18332 [Method of Transmitting and Receiving Reference Signals in a Wireless Communication System] <Nakashima>
Updated: 6 hours ago
Article information
Article type: Case note
Category: Other Japanese law
Topics: Numerical limitations and parameters
First published on this website: 2026-11-01
Display and classification checked: November 2, 2026
Originally published on Ameblo: 2025-06-09 (Japan time). Full English translation.
2022 (Wa) 18332 [Method of Transmitting and Receiving Reference Signals in a Wireless Communication System] <Nakashima>
*Not mandatory under the “standard” +Non-satisfaction was confirmed by materials submitted under a protective order.
The LTE standard provides that values such as NID_csh_DMRS are used when supplied by higher layers, and that ordinary cell IDs (such as NID_cell) are used when they are not supplied.
⇒ Whether a terminal is configured to support CoMP (coordinated transmission and reception among multiple base stations) is left to its particular implementation; the LTE standard does not make CoMP mandatory for terminals.
+Further, based on the defendant's evidence covered by the protective order (including chipset specifications and engineers' statements), the court found that the chipsets incorporated in the defendant's products implemented no CoMP support and therefore did not generate reference signals using the parameters at issue.
⇒ Limitation not satisfied
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The first-published date remains unchanged. Display maintenance, classification changes, related-article updates, and text corrections are recorded separately.
November 1, 2026: First published on this website.
November 2, 2026: Added article information, classification, topics, language navigation, related articles where the same case was confirmed, consultation guidance, and SEO. The original text and first-published date were preserved.
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