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Physical uplink control management in LTE/LTE-A systems with unlicensed spectrum

A technology of link control channel and link control information, applied in transmission system, digital transmission system, multiple use of transmission path, etc., can solve the problem of reducing downlink and uplink performance, etc.

Active Publication Date: 2016-05-18
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This interference can degrade performance on both the downlink and uplink

Method used

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  • Physical uplink control management in LTE/LTE-A systems with unlicensed spectrum
  • Physical uplink control management in LTE/LTE-A systems with unlicensed spectrum
  • Physical uplink control management in LTE/LTE-A systems with unlicensed spectrum

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Embodiment Construction

[0031] The detailed description set forth below in conjunction with the accompanying drawings is intended to describe various configurations of the present invention and is not intended to limit the scope of the present disclosure. Rather, the detailed description includes specific details to provide a thorough understanding of the inventive subject matter. It will be apparent to one of ordinary skill in the art that these specific details may not be required in every instance, and in some instances, well-known structures and components are shown in block diagram form for clarity of presentation.

[0032] Carriers have looked to WiFi as the primary mechanism for using unlicensed spectrum in order to alleviate growing levels of congestion in cellular networks. However, New Carrier Types (NCTs) based on LTE / LTE-A in unlicensed spectrum can be compatible with carrier-grade WiFi, enabling LTE / LTE-A using unlicensed spectrum as a replacement for WiFi. LTE / LTE-A using unlicensed sp...

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Abstract

Uplink control channel management is disclosed for LTE / LTE-A communication systems with unlicensed spectrum in which two or more physical resource blocks (PRBs) are allocated for uplink control channel transmission. The uplink control information (UCI) payload may be determined based on clear channel assessment (CCA) information associated with carriers scheduled for transmission of the UCI data. With the UCI payload determined, two or more uplink control channel messages may be generated according to at least one control channel format, wherein uplink control channel messages include the UCI payload. These generated uplink control channel messages may then be transmitted over the allocated PRBs.

Description

[0001] Cross References to Related Applications [0002] This application claims U.S. Provisional Patent Application No. 61 / 885,348, filed October 1, 2013, entitled "PHYSICALUPLINKCONTROLMANAGEMENTINLTE-USYSTEMS," and U.S. Utility Patent Application No. 14 / 492,437," which is expressly incorporated by reference in its entirety. technical field [0003] In general, aspects of the present disclosure relate to wireless communication systems, and in particular, to physical uplink control management in Long Term Evolution (LTE) / LTE-Advanced (LTE-A) communication systems using unlicensed spectrum. Background technique [0004] Wireless communication networks are widely deployed to provide various communication services such as voice, video, packet data, messaging, broadcast, and so on. These wireless networks may be multiple-access networks capable of supporting multiple users by sharing available network resources. These networks are usually multiple-access networks, supporting ...

Claims

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Application Information

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IPC IPC(8): H04W74/08
CPCH04L5/001H04L5/0023H04L5/0048H04L5/0053H04L5/0094H04L5/14H04W74/0808H04W16/14H04W72/21H04W72/541H04W72/23
Inventor W·陈A·达姆尼亚诺维奇S·耶拉马利骆涛P·加尔
Owner QUALCOMM INC
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