Robust inter-radio access technology operations in unlicensed spectrum

Abstract

Systems and methods for co-existence in unlicensed spectrum are disclosed. In one aspect, mitigating interference between Radio Access Technologies (RATs) sharing operating spectrum in an unlicensed band of radio frequencies may comprise, for example, determining an inter-RAT interference metric associated with base station narrowband signaling on the unlicensed band and modifying a transmission parameter relating to a transmission power or signaling scheme for narrowband signaling based on the determined inter-RAT interference metric. In accordance with the modified transmission parameter, a narrowband signal may be transmitted on the unlicensed band.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]The present application for patent claims the benefit of U.S. Provisional Application No. 61 / 873,599, entitled “METHODS FOR ROBUST LTE OPERATIONS IN UNLICENSED CHANNELS,” filed Sep. 4, 2013, assigned to the assignee hereof, and expressly incorporated herein by reference in its entirety.REFERENCE TO CO-PENDING APPLICATIONS FOR PATENT[0002]The present application for patent is also related to the following co-pending U.S. patent application: “ROBUST INTER-RADIO ACCESS TECHNOLOGY OPERATIONS IN UNLICENSED SPECTRUM,” having Attorney Docket No. QC132771U1, filed concurrently herewith, assigned to the assignee hereof, and expressly incorporated herein by reference in its entirety.INTRODUCTION[0003]Aspects of this disclosure relate generally to telecommunications, and more particularly to co-existence between wireless Radio Access Technologies (RATs) and the like.[0004]Wireless communication systems are widely deployed to provide various types of...

AI Technical Summary

Benefits of technology

[0013]Another method of communication is also disclosed for mitigating interference among a plurality of user devices operating in an unlicensed band of radio frequencies. The method may comprise, for example: segregating the plurality of user devices into a first group of user devices and a second group of user devices based on a proximity of each user device to a small cell base station being above or below a threshold; allocating a first set of communication resources to the first group of user devices; allocatin

Problems solved by technology

Even such careful planning, however, cannot fully accommodate channel characteristics such as fading, multipath, shadowing, etc., especially in indoor environments.

Indoor users therefore often face coverage issues (e.g., call outages and quality degradation) resultin

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