Method and device to minimize interference in a converged lmr/lte communication device

Abstract

A method and converged LMR / LTE communications device provide for minimizing interference in the converged LMR / LTE communications device that operates in a land mobile radio (LMR) narrowband communication system and a long term evolution (LTE) broadband communication system. The converged LMR / LTE communications device detects, using an electronic processing device, that the converged LMR / LTE communications device is operating in the first LTE band and the first LMR band. The converged LMR / LTE communications device determines that a first LMR received signal strength indicator (RSSI) at the converged LMR / LTE communications device is less than a first LMR threshold signal strength and disables at least one LTE application based upon the first LMR RSSI being less than the LMR threshold signal strength.

Description

BACKGROUND OF THE INVENTION[0001]The present invention relates generally to mobile devices, which are also called Mobile Stations (MS) in cellular system terminology or User Equipment (UE) in cellular systems specified by the Third Generation Partnership Project (3GPP) or Portable Devices or even just Portables in Land Mobile Radio (LMR) community. In particular, certain mobile devices, commonly referred to as converged communication devices, or simply converged devices, can operate on multiple communication systems, even communication systems that utilize different portions of the RF spectrum. These mobile devices can utilize, for example, Land Mobile Radio (LMR) for voice communications and cellular Long Term Evolution (LTE) for data communications.[0002]However, utilizing these two RF bands can result in interference, which can hamper communications and even prevent usable communication from occurring. This problem can be worse when the LMR signal is weak, especially in correspon...

AI Technical Summary

Benefits of technology

The present invention relates to a method and system for minimizing interference in a converged communication device that operates on multiple communication systems, such as LMR and LTE. The problem of interference can occur when the two RF bands overlap, and can result in reduced communication quality and even prevent usable communication from occurring. The invention proposes a solution to minimize interference by modifying the data flow and data rate of the LTE modem based upon channel conditions, prioritizing the transmission of applications, controlling the data rate using QoS priority, and allowing all applications regardless of channel conditions for certain LTE bands. The invention allows for the simultaneous operation of LMR and LTE over at least a part of the coverage area, rather than in strict exclusion of one or the other.

Problems solved by technology

However, utilizing these two RF bands can result in interference, which can hamper communications and even prevent usable communication from occurring.

This problem can be worse when the LMR signal is weak, especially in correspondence with certain LTE frequency bands.

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