Support for orthogonal cover code on nprach and npusch in IoT ntn
OCC for NPUSCH and NPRACH in NB-IoT NTN addresses the challenge of limited UL capability by enabling efficient UE multiplexing and resource allocation, enhancing system capacity and network performance.
WO2025160709A1 Publication Date: 2025-08-07MEDIATEK SINGAPORE PTE LTD +2
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Patent Information
- Application Number
- PCT/CN2024/074507
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-01-29
- Publication Date
- 2025-08-07
AI Technical Summary
Technical Problem
In NB-IoT NTN deployments, the large coverage area results in a massive number of IoT devices needing to access satellites, while the UL capability is severely suppressed due to limited link budget, necessitating a solution to enhance system capacity.
Method used
The implementation of orthogonal cover codes (OCC) for NPUSCH format 1 and NPRACH to multiplex UEs, allowing for various configurations and resource allocations to support OCC-enabled UEs, including legacy and new UEs, through system information, RRC signaling, and DCI.
Benefits of technology
Enhances UL capability and system capacity by enabling efficient multiplexing of UEs, supporting contention-based and contention-free random access, and maintaining orthogonality among UEs, thereby improving network performance.
✦ Generated by Eureka AI based on patent content.
Abstract
In the NB-IoT NTN deployment, the coverage area can be as large as hundreds of thousand square kilometers. In such huge geography area, the number of IoT devices that need to access the satellite will be massive. In another hand, the UL capability of NB-IoT is severely suppressed by large repetition number due to the limited link budget. To enlarge the system capacity, multiplexing of UEs by usage of orthogonal cover codes (OCC) for NPUSCH format 1 and NPRACH is proposed in 3GPP as a Release 19 IoT NTN work item. The Invention incudes various methods of overlaying the OCC code to the NPUSCH and NPRACH; various procedures on support OCC for NPRACH and NPUSCH such as random access and connection establishment; other related 3GPP specification impact.
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