O-RAN IP User Guide

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ID 683238
Date 8/15/2025
Public
Document Table of Contents
Document Table of Contents x
1. About the O-RAN IP 2. Getting Started with the O-RAN IP 3. O-RAN IP Functional Description 4. O-RAN IP Registers 5. O-RAN Intel FPGA IP User Guide Archive 6. Document Revision History for the O-RAN IP User Guide
1. About the O-RAN IP x
1.1. O-RAN IP Features 1.2. O-RAN IP Device Family Support 1.3. Release Information for the O-RAN IP 1.4. O-RAN IP Performance and Resource Utilization
2. Getting Started with the O-RAN IP x
2.1. Obtaining, Installing, and Licensing the O-RAN IP 2.2. Parameterizing the O-RAN IP 2.3. Generated IP File Structure
2.2. Parameterizing the O-RAN IP x
2.2.1. O-RAN IP Parameters
3. O-RAN IP Functional Description x
3.1. O-RAN IP Signals 3.2. O-RAN IP Error Handling 3.3. O-RAN Reset Transactions 3.4. O-RAN IP Streaming Mode 3.5. O-RAN IP Performance Counters 3.6. O-RAN IP Transmission and Reception Window Threshold 3.7. O-RAN IP Fragmentation 3.8. O-RAN IP U-Plane Packet Size 3.9. O-RAN IP Minimum Number of PRB Support
3.6. O-RAN IP Transmission and Reception Window Threshold x
3.6.1. O-RAN IP Examples for Transmission and Reception Window Thresholds
1. About the O-RAN IP
2. Getting Started with the O-RAN IP
3. O-RAN IP Functional Description
4. O-RAN IP Registers
5. O-RAN Intel FPGA IP User Guide Archive
6. Document Revision History for the O-RAN IP User Guide

3.9. O-RAN IP Minimum Number of PRB Support

The size of the PRB depends on whether the IP uses compression and the IQ_Width specified by the upCompHdr. The IP supports IQ_Width 1 to 5 for modulation compression and 8 to 15 for block floating point compression.

The IP needs 3 clock cycles to calculate the PRB size and imposes minimum size of PRB data > 3 x DATA_WIDTH, which is 24 bytes for 64-bit interface (10G/25G) and 48 bytes for 128-bit interface (50G).

Table 39.  Minimum Number of PRB supportThe table shows IQ_Width 6 and 7 only for reference. The IP only supports single section in the U-plane packet when numPRBu = 0
IQ_Width Number of Bytes per PRB Minimum Number PRB for 64-bit Maximum Number PRB for 64-bit
1 3 9 17
2 6 5 9
3 9 3 6
4 12 3 5
5 15 2 4
6 18 2 3
7 21 2 3
8 24 1 2
9 27 1 2
10 30 1 2
11 33 1 2
12 36 1 2
13 39 1 2
14 42 1 2
15 45 1 2
16 48 1 2
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