5G CORESET Configuration via PBCH Segmentation
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G NR, face challenges in efficiently configuring the Control Resource Set (CORESET) within the limited capacity of the Physical Broadcast Channel (PBCH), which is crucial for transmitting essential system information to User Equipment (UE) for initial access and data transmission.
Innovation Solution
The proposed solution involves various design options for configuring CORESET, including frequency domain and time domain aspects, to reduce the number of bits required in the PBCH payload, such as supporting different subcarrier spacings and bandwidth configurations, and using frequency domain multiplexing to optimize the positioning and alignment of CORESET with respect to the SS/PBCH, ensuring effective transmission of RMSI and OSI.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If more CORESET configuration parameters are transmitted in PBCH, then the configuration flexibility and adaptability are improved, but the PBCH payload capacity is exceeded
Solution Approach 1:
The CORESET configuration information is segmented into multiple parts: some parameters are transmitted in the PBCH payload, while other parameters are transmitted separately via RMSI (Remaining Minimum System Information). This segmentation allows the PBCH to carry only essential configuration parameters, reducing payload size, while maintaining comprehensive configuration flexibility through the combined use of PBCH and RMSI.
Solution Approach 2:
The patent transitions from a single-dimension approach (transmitting all configuration parameters in PBCH) to a two-dimension approach by introducing time-domain separation. Essential parameters are transmitted in the frequency domain via PBCH for immediate access, while additional parameters are transmitted in the time domain via RMSI, allowing comprehensive configuration without exceeding PBCH capacity.
2Productivity
If the number of bits in PBCH payload is reduced, then the transmission efficiency is improved, but the information completeness for CORESET configuration is compromised
Solution Approach 1:
The patent applies preliminary action by transmitting the most critical CORESET configuration parameters in the PBCH payload before the UE needs to access the network. This allows the UE to immediately decode essential configuration information for initial access, improving transmission efficiency. The remaining configuration parameters are subsequently provided in RMSI, ensuring information completeness without burdening the PBCH with excessive bits.
3Quantity of substance
If CORESET bandwidth is increased to support higher bandwidths, then the data transmission capacity is improved, but the frequency resource allocation complexity increases
Solution Approach 1:
The patent implements dynamic frequency resource allocation for CORESET by allowing the bandwidth and frequency position to be configured based on actual network conditions and requirements. The CORESET can be dynamically allocated within the available system bandwidth, enabling flexible adaptation to different bandwidth scenarios (e.g., 5 MHz, 10 MHz, 20 MHz) without requiring complex fixed allocation schemes. This dynamic approach maintains high data transmission capacity while managing allocation complexity through standardized configuration parameters.
Data Source
AI summary
Described is an apparatus of a User Equipment (UE) operable to communicate with a fifth-generation Evolved Node-B (gNB) on a wireless network. The apparatus may comprise a first circuitry and a second circuitry. The first circuitry may be operable to process a message comprising an indicator to indicate a number of contention based physical random access channel (PRACH) preambles within a PRACH occasion per Synchronization Signal Block (SSB). The second circuitry may be operable to generate a first PRACH occasion, based on the indicator.