UPLINK PROCEDURES FOR LTE/LTE-A COMMUNICATION SYSTEMS WITH UNLICENSED SPECTRUM

• US 20170325201A1
• Filed: 07/24/2017
• Published: 11/09/2017
• Est. Priority Date: 08/16/2013
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Chen, Wanshi, Gaal, Peter, Malladi, Durga Prasad, Luo, Tao, Ji, Tingfang, Bhushan, Naga, Wei, Yongbin, Damnjanovic, Aleksandar
• Granted Patent: US 10,187,875 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 27/0006 Assessment of spectral gaps suitable for allocating digitally modulated signals, e.g. for carrier allocation in cognitive radio for spectrum sharing between different networks H04W16/14
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/003 Arrangements for allocating sub-channels of the transmission path
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/1215 for collaboration of different radio technologies
• CPC Class Codes: H04W 74/0833 Random access procedures, e.g. with 4-step access

Abstract

Long term evolution (LTE)/LTE-Advanced (LTE-A) deployments with unlicensed spectrum leverage more efficient LTE communication aspects over unlicensed spectrum, such as over WIFI radio access technology. In order to accommodate such communications, various uplink procedures may be modified in order to handle communications between licensed and unlicensed spectrum with LTE/LTE-A deployments with unlicensed spectrum.

Claims

1. A method of wireless communication, comprising:

generating, at a user equipment (UE), a random access request, wherein the UE is configured to transmit communication signals to a serving base station over at least unlicensed spectrum and receive communication signals from the serving base station;

transmitting, by the UE, the random access request to the serving base station over a first carrier of one or more carriers operated in a cell serviced by the serving base station; and

monitoring the one or more carriers, by the UE, for a random access response for connecting to the cell.