It seems that you don't quite understand the relationship between standards and patents. Large companies will push standards, but if they want to push standards, they must first apply for patents. After the patent is accepted, if the technology is successfully promoted to become a standard, the patent will become a standard patent, and if authorized, it will be worth 10 thousand. Because the patent is applied first, before the publication date of the standard, it is not afraid of publication, but hopes to be published by the standard.
On the contrary, if the standard is made public first and you don't know that you have applied for a patent, then the patent does not meet the requirements of novelty and will not be granted. Even if the examiner neglects the authorization, his rights are unstable, easily invalid and worthless.
If you apply for a patent for the communication technology you just made up, you can't successfully promote it into a standard. Even if the patent is authorized, it will not be used, or the infringement is difficult to detect, and the patent value is not great. Generally speaking, companies that push standards, if the patent they apply for does not enter the standard, are likely to give up directly and stop spending money on maintenance.
Finally, to sum up, the 4G patent held by R&D company is the same as the technology in the published standard, but because its application date is earlier than the standard publication date, the publication of the standard does not affect the stability of its patent, but has higher value. If the patent is different from the standard or is applied after the publication of the standard, it should not be called a 4G patent. It's just an ordinary patent, which can only decorate the facade, but it's useful for amateurs.