The point of patents is supposed to be to encourage innovation by rewarding invention and encouraging disclosure of inventions. The problem with how patents often work is exemplified by this one. Having read it I am stll unaware of :
1. What the authors are claiming is novel.
2. Any novelty or innovation except in the very specific details related to the specific application. Everything described seems commonplace and well known.
Such patents restrict competition while providing no benefit to society at all.