Beam Shape Signaling Using Zonal Differential Encoding
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Solution Overview
Problem
Existing wireless communication systems, particularly 5G NR, face inefficiencies in transmitting beam shape information, which consumes significant resources due to the high resolution required for accurate beam shape transmission.
Innovation Solution
The proposed solution involves partitioning a panel into beam zones, where each zone has a representative first beam and a set of second beams, transmitting full beam shape information for the first beam and differences in amplitude and phase for the second beams, rather than full beam shapes for each beam.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If full beam shape information is transmitted for each beam, then measurement precision is improved, but loss of information increases due to resource consumption
Solution Approach 1:
The patent divides the set of beams into multiple beam zones, where each zone contains a representative beam and several other beams. Full beam shape information is transmitted only for the representative beam of each zone, while other beams in the same zone are represented by differential information relative to their zone's representative beam. This segmentation reduces the total amount of information that must be transmitted while maintaining measurement precision through the use of differential encoding.
2Measurement precision
If high resolution beam shape transmission is used, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent changes the parameter representation from absolute beam shape values for every beam to a hybrid approach where representative beams use full parameter sets and other beams use differential parameters. This parameter transformation reduces the dimensionality of the transmitted data while preserving the high resolution information needed for precise measurements, thereby reducing device complexity without sacrificing measurement precision.
Data Source
AI summary
A first wireless device may receive a set of indications for each beam zone of a plurality of beam zones. The set of indications, for each beam zone, may include (i) a first indication of a full beam shape of a first beam associated with the beam zone, (ii) a second indication of a first difference in beam shape amplitude for each beam of a set of second beams associated with the beam zone and (iii) a third indication of a second difference in beam shape phase for each beam of the set of second beams associated with the beam zone. The first wireless device may derive at least one of an angle of arrival (AoA) or an angle of departure (AoD) of a channel based on the set of indications for each beam zone of the plurality of beam zones.