Multi-cell SIB Provisioning with Segmentation and Compression
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Solution Overview
Problem
The provisioning of multi-cell System Information (SI) in wireless communication systems, particularly for 5G networks, faces challenges due to the need to convey extensive data across multiple cells efficiently, especially with high carrier frequencies experiencing worse link budgets and requiring effective beamforming and data compression techniques.
Innovation Solution
The solution involves dividing the multi-cell System Information Block (SIB) into multiple SIB instances, where at least one instance contains content for the serving cell and another for two or more second cells, with the option to compress the SIB content and provide each instance through corresponding downlink communication channels, utilizing different formats for identical and differing parameters to reduce data size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multi-cell SI content is provided for multiple cells in a single cell, then the SI covers multiple cells, but the data size becomes excessive
Solution Approach 1:
The multi-cell SIB is divided into multiple SIB instances, where each instance contains SIB content for a specific cell or group of cells. The network node provides different SIB instances through different downlink communication channels, allowing UEs to receive only the relevant cell information without processing excessive data from all cells.
Solution Approach 2:
Different SIB instances are tailored to specific cells or cell groups, with each instance containing locally relevant SI parameters. This allows the network to provide customized SI content for each cell while maintaining multi-cell coverage capability, reducing the overall data burden on UEs.
2Adaptability or versatility
If SI size is increased to include multiple cell information, then multi-cell provisioning is achieved, but transmission efficiency decreases
Solution Approach 1:
By segmenting the multi-cell SIB into multiple smaller SIB instances transmitted through different downlink channels, the network improves transmission efficiency. Each SIB instance can be transmitted independently and received selectively by UEs, reducing redundant transmissions and improving overall system productivity.
3Loss of information
If all SIB content is provided for all cells, then complete information is available, but UE processing complexity increases
Solution Approach 1:
The segmentation of multi-cell SIB into multiple SIB instances allows UEs to process only the relevant cell information corresponding to their current cell or area of interest. This reduces UE processing complexity while maintaining access to complete information when needed through selective reception of different SIB instances.
Data Source
AI summary
A network node provisions multi-cell System Information (SI) for a serving cell serving a wireless device and some number of second cells by dividing the multi-cell System Information Block (SIB) into multiple SIB instances. At least one of the SIB instances comprises the SIB content for the serving cell, and each remaining SIB instance comprises the SIB content for the cell(s) associated with that SIB instance. In one embodiment, another of the SIB instances comprises SIB content for two or more of the second cells. In another embodiment, another of the SIB instances comprises SIB content for one or more of the second cells, which is subsequently compressed before being provided to the wireless device. Each SIB instance is then provided to a wireless device via a corresponding downlink communication channel.