Dynamic Inter-Sector MIMO Transmission Coordination
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Solution Overview
Problem
Current MIMO transmission systems face limitations in maximizing data throughput due to the mismatch between the number of transmit antennas available at a primary base station and the maximum MIMO capability of user equipment, which restricts the number of spatial layers that can be used for data transmission.
Innovation Solution
The system dynamically reconfigures MIMO transmission by incorporating additional sectors from secondary base stations to increase the number of spatial layers, utilizing sector schedulers that assess signal quality and resource availability to optimize antenna usage and divide datastreams into substreams for parallel transmission across multiple antennas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If additional transmit antennas are added to increase spatial layers, then data throughput is improved, but device complexity and coordination overhead increase
Solution Approach 1:
The patent segments the MIMO transmission system into multiple independent sectors, each with its own transmit antennas. By dividing the overall transmission task across these segmented sectors, the system can increase the total number of spatial layers without requiring a single complex base station to manage all antennas, thus improving throughput while managing complexity through modular architecture
Solution Approach 2:
The patent combines multiple sectors from different base stations to form a coordinated MIMO transmission system. By merging the transmit capabilities of multiple sectors, the system achieves higher spatial layer capacity and data throughput while distributing the complexity across multiple independent units rather than concentrating it in one device
2Productivity
If inter-sector coordination is implemented to increase spatial layers, then data transmission efficiency is improved, but signaling overhead and resource management complexity increase
Solution Approach 1:
The patent implements a universal resource allocation framework where sector schedulers can dynamically assign resources across multiple sectors for MIMO transmission. This multi-functional approach allows the same scheduling mechanisms to handle both intra-sector and inter-sector resource management, improving transmission efficiency while avoiding the need for separate complex coordination protocols
Solution Approach 2:
The system employs feedback mechanisms where user equipment reports channel quality and capability information to sector schedulers. This feedback enables dynamic adjustment of spatial layer allocation and sector coordination, optimizing data transmission efficiency while keeping coordination overhead manageable through information-driven decision making
3Productivity
If the number of spatial layers is increased to match UE MIMO capability, then throughput is improved, but the number of required transmit antennas exceeds available resources at a single base station
Solution Approach 1:
The patent transitions from a single-base-station spatial arrangement to a multi-sector spatial arrangement, adding a dimensional aspect to antenna deployment. By utilizing antennas across multiple sectors and base stations rather than concentrating all antennas at one location, the system can provide more transmit antennas for MIMO spatial multiplexing without requiring a single base station to have an impractically large number of antennas
Data Source
AI summary
A system includes a first antenna array, and a sector scheduler. The sector scheduler determines if a number of transmit antennas of the first antenna array, that serves a location of a user equipment (UE), is less than a maximum multiple-input, multiple-output (MIMO) capability of the UE. The sector scheduler causes data to be transmitted to the UE via one or more transmit antennas of the first antenna array and at least one transmit antenna associated with a second antenna array of a selected adjacent sector based on the number of transmit antennas of the first antenna array being less than the maximum MIMO capability of the UE.