Radio Remote Unit Resource Allocation for Co-Cell Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In scenarios where multiple radio remote units share a cell, there is a waste of channel resources due to all units transmitting and receiving the same signals, leading to inefficient resource allocation.
Innovation Solution
A method and apparatus that measure the test value of a reference signal for user equipment under each radio remote unit, selecting the unit with the maximum test value as the work unit and optionally adding others if the difference is within a preset threshold, to optimize channel resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all radio remote units transmit and receive signals for a user equipment, then the user equipment can maintain communication connectivity, but channel resources are wasted due to redundant transmissions
Solution Approach 1:
The patent segments the cell into multiple sectors, each served by a different radio remote unit. Instead of all RRUs transmitting to every UE, each RRU serves specific sectors, dividing the transmission task among multiple units and eliminating redundant transmissions across the entire cell.
Solution Approach 2:
The patent implements local quality by assigning different transmission responsibilities to different RRUs based on geographic location. Each RRU transmits signals only to UEs in its specific coverage area or sector, rather than all UEs in the cell, optimizing resource allocation to match local needs.
2Device complexity
If multiple radio remote units share the same cell parameters and transmit identical signals, then simplified configuration is achieved, but resource allocation efficiency deteriorates
Solution Approach 1:
The patent segments the cell into multiple sectors with different physical downlink shared channel (PDSCH) resource allocations. Each RRU is assigned specific resource blocks and transmission time intervals for its sector, allowing simplified shared configuration while enabling efficient differentiated resource allocation.
Solution Approach 2:
The patent introduces a spatial dimension to resource allocation by assigning different frequency resources and time resources to different RRUs. This multi-dimensional resource separation allows multiple RRUs to operate simultaneously without interference, improving allocation efficiency while maintaining configuration simplicity.
3Reliability
If all radio remote units transmit signals simultaneously, then complete coverage is ensured, but interference increases and resource utilization decreases
Solution Approach 1:
The patent implements periodic action through time-division multiplexing, where different RRUs transmit signals in different time intervals or subframes. This periodic transmission pattern ensures complete coverage over time while reducing simultaneous interference between RRUs.
Solution Approach 2:
The patent separates transmissions in the frequency dimension by allocating different frequency bands or resource blocks to different RRUs. This frequency division allows simultaneous transmission without interference, maintaining complete coverage while eliminating harmful interference effects.
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
Embodiments of the present invention provide a resources allocation method and apparatus for multiple radio remote units sharing a cell, relating to the communications field, to reduce a waste of channel resources in resources allocation for the multiple radio remote units sharing a cell. The resources allocation method for multiple radio remote units sharing a cell is provided, where in a cell with multiple radio remote unit, a base station measures a test value of a reference signal of a user equipment under each radio remote unit in the cell; and selects a radio remote unit with the maximum test value as a work radio remote unit of the user equipment. The embodiments of the present invention are applicable to channel resources allocation.