Linear Beam Combinations for Wireless Signal Measurement
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Solution Overview
Problem
Current beam selection methods in wireless communication, such as those used in 5G NR and IEEE 802.11 ay, require substantial radio resources and signaling overhead, especially with a large number of antenna elements, leading to impaired system capacity and inefficiency.
Innovation Solution
A method that determines a collection of linear combinations of transmission beams, where each beam is included in at least one combination, and transmits measurement signals corresponding to these combinations, reducing the number of radio resources needed for beam selection by organizing available transmission beams into fewer linear combinations, thereby minimizing signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional beam training methods are used to ensure complete beam space coverage, then beam selection quality is maintained, but radio resource allocation and signaling overhead increase substantially
Solution Approach 1:
The patent combines multiple transmission beams into linear combinations, where each measurement signal represents a combination of multiple beams rather than individual beams. This merging approach reduces the total number of measurement signals needed while preserving beam selection quality through mathematical optimization of the combination coefficients.
Solution Approach 2:
Each measurement signal in the patent serves multiple functions simultaneously by representing a linear combination of multiple transmission beams. A single measurement signal provides information about multiple beams, making the measurement process more efficient and reducing the overall number of signals required for complete beam space coverage.
2Adaptability or versatility
If the number of orthogonal transmission beams is increased to span the beam space, then beam coverage is improved, but system capacity is impaired due to resource allocation overhead
Solution Approach 1:
The patent merges multiple transmission beams into linear combinations to achieve complete beam space coverage with fewer measurement signals. By combining beams mathematically rather than transmitting each beam separately, the system maintains comprehensive coverage while reducing resource allocation requirements and improving overall system capacity.
3Measurement precision
If individual beam measurements are performed for all available beams, then accurate beam selection is achieved, but measurement overhead and processing complexity increase
Solution Approach 1:
The patent combines multiple beam measurements into single measurement signals that represent linear combinations of beams. This approach maintains measurement accuracy through optimized combination coefficients while significantly reducing the total number of measurements required and simplifying the overall processing complexity at both transmitter and receiver.
Solution Approach 2:
The patent creates mathematical representations (linear combinations) of multiple beams within single measurement signals. These composite measurement signals serve as efficient copies that contain information about multiple individual beams, reducing the need for separate measurements and simplifying processing while preserving measurement accuracy.
Data Source
AI summary
A method is disclosed which is performed in a transmitter device configured for transmission of measurement signals for beam selection. The method comprises determining a collection of linear combinations of transmission beams, wherein the transmission beams are of a set of available transmission beams. A cardinality, R, of the collection of linear combinations of transmission beams is lower than a cardinality, N, of the set of available transmission beams. Each transmission beam in the set of available transmission beams is comprised in at least one linear combination of transmission beams, and at least one of the linear combinations of transmission beams comprises less than all transmission beams of the set of available transmission beams. The method also comprises transmitting measurement signals to a receiver device, wherein each of the measurement signals corresponds to a linear combination of transmission beams from the collection of linear combinations of transmission beams. A method is also disclosed which is performed in a receiver device configured for performing measurements for beam selection. The method comprises receiving the measurement signals from a transmitter device, and performing measurements for beam selection on the measurement signals, for selection of a transmission beam from the set of available transmission beams. Corresponding apparatuses, communication devices, system, and computer program product are also disclosed.