Coverage enhancement for physical downlink control channel with common search space

PDCCH repetitions in multiple monitoring occasions and adaptive search space configurations address the coverage bottlenecks of PDCCH with common search space in NTN, ensuring reliable control channel reception and network adaptability.

WO2026147688A1PCT designated stage Publication Date: 2026-07-09INTEL CORP
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
INTEL CORP
Filing Date
2025-12-16
Publication Date
2026-07-09

AI Technical Summary

Technical Problem

In wireless communication networks, particularly in Non-Terrestrial Networks (NTN) using 5G NR, the physical downlink control channel (PDCCH) with common search space experiences coverage bottlenecks due to path-loss and large distances, leading to challenges in maintaining reliable downlink coverage for system information block 1 (SIB 1) and PDCCH common search space.

Method used

Implementing PDCCH repetitions by configuring devices to monitor repeated transmissions in multiple monitoring occasions associated with the same synchronization signal block index, utilizing existing fields in the master information block to signal repetition, and setting up a second set of search spaces for enhanced coverage, with flexible slot offsets and higher-layer signaling to adapt to varying network conditions.

Benefits of technology

Enhances the reliability and flexibility of control channel reception, ensuring multiple opportunities for successful decoding under challenging radio conditions and diverse use cases, thereby improving network adaptability and robustness.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure US2025059915_09072026_PF_FP_ABST
    Figure US2025059915_09072026_PF_FP_ABST
Patent Text Reader

Abstract

This disclosure describes systems, methods, and devices related to enhanced coverage optimization. A device may decode an indication in a master information block (MIB) that specifies whether repetition is applied for a Type 0 physical downlink control channel (PDCCH) common search space (CSS). The device may monitor PDCCH repetitions for the Type 0 PDCCH CSS during two PDCCH monitoring occasions associated with a same synchronization signal block (SSB) index. The device may select, using a spare bit in the MIB, a configuration that applies the PDCCH repetitions for the Type 0 PDCCH CSS.
Need to check novelty before this filing date? Find Prior Art