Base Station Beam Modulation Coding Scheme Adjustment
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Solution Overview
Problem
In cellular wireless networks, interference from adjacent base stations serving nearby UEs can inhibit the reception of bearer data over multiple UE-specific beams, leading to reduced throughput and reliability for UEs.
Innovation Solution
A base station determines if an adjacent base station is serving a UE in close proximity and adjusts the modulation and coding schemes (MCS) for its own UE-specific beams, switching to a lower-order MCS on one or more beams to mitigate interference, thereby improving reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the base station uses the same high-order MCS for all UE-specific beams to maximize throughput, then the data transmission efficiency is improved, but the reception reliability deteriorates due to interference from adjacent base stations
Solution Approach 1:
The base station applies different MCS orders to different UE-specific beams based on their individual interference conditions. Specifically, the first beam uses a first MCS while the second beam uses a second MCS, allowing each beam to be optimized for its local channel conditions and interference environment, thereby simultaneously achieving high throughput and reliable reception
Solution Approach 2:
The base station dynamically adjusts the MCS order for each beam based on real-time interference conditions and channel quality indicators. The system transitions from static single-MCS transmission to dynamic multi-MCS transmission, adapting the modulation and coding schemes to current network conditions to optimize both throughput and reliability
2Reliability
If the base station uses a lower-order MCS to mitigate interference from adjacent base stations, then the reception reliability is improved, but the data transmission efficiency deteriorates
Solution Approach 1:
Instead of uniformly applying lower-order MCS to all beams, the base station selectively applies different MCS orders to different UE-specific beams. The first beam may use a higher-order MCS for efficiency while the second beam uses a lower-order MCS for reliability, optimizing the trade-off locally for each beam based on its specific interference and channel conditions
Solution Approach 2:
The base station segments the single data stream into multiple beams, each with its own MCS configuration. This allows the system to divide the transmission task into independent segments that can be optimized separately, with some beams prioritizing throughput and others prioritizing reliability, thereby achieving both goals simultaneously
Data Source
AI summary
According to the present disclosure, a base station may be configured to serve a user equipment device (UE) over two or more beams using different modulation and coding schemes (MCSs) in response to determining that another base station is concurrently serving another UE at nearly the same location. For instance, a first base station may initially serve a first UE over two beams using the same MCS on both beams. The first base station may then determine that a second base station is serving a second UE at nearly the same location. And in response, the first base station may then change the MCS on at least one of the two beams so that the first base station then serves the first UE using different MCSs on the two beams. Serving the first UE with different MCSs concurrently on multiple beams may help to improve the first UE's reception.