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Group ACK/NACK for LTE in unlicensed spectrum

A license-free, group-based technology for use in error prevention/detection using return channels, wireless communications, transmission path sub-channel allocation, etc.

Active Publication Date: 2016-04-06
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, use of unlicensed spectrum by cellular devices and WiFi devices may require the use of contention-based protocols to gain access to unlicensed spectrum

Method used

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  • Group ACK/NACK for LTE in unlicensed spectrum
  • Group ACK/NACK for LTE in unlicensed spectrum
  • Group ACK/NACK for LTE in unlicensed spectrum

Examples

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Embodiment Construction

[0034] Methods, systems and apparatus are described in which unlicensed spectrum is used for LTE communications. Typically, operators have looked to WiFi as the primary mechanism for using unlicensed spectrum to alleviate increasing levels of congestion in cellular networks. However, LTE-based New Carrier Types (NCTs) in unlicensed or shared spectrum can be compatible with carrier-grade WiFi, making LTE / LTE-A communications in unlicensed or shared An alternative to congested WiFi solutions. LTE / LTE-A communications in unlicensed or shared spectrum can take advantage of many LTE concepts, and some modifications can be introduced to the physical layer (PHY) and medium access control (MAC) of the network or network Provide efficient operation in the wide spectrum and meet regulatory requirements. For example, unlicensed spectrum may range from 600 megahertz (MHz) to 6 gigahertz (GHz). LTE / LTE-A in unlicensed or shared spectrum may perform significantly better than WiFi in some...

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PUM

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Abstract

Methods, systems, devices, and apparatuses are described for wireless communications. In one method, a set of one or more data subframes of a data frame may be transmitted over an unlicensed spectrum, to a user equipment (UE), during a transmission period. A group hybrid automatic repeat request (HARQ) feedback message for a plurality of data subframes including at least one of the data subframes in the set of one or more data subframes may then be received over the unlicensed spectrum, from the UE, during the transmission period. In another method, a set of one or more data subframes of a data frame may be received over an unlicensed spectrum during a transmission period. A group HARQ feedback message for a plurality of data subframes including at least one of the data subframes in the set of one or more data subframes may then be transmitted over the unlicensed spectrum during the transmission period.

Description

[0001] cross reference [0002] This patent application claims U.S. Patent Application No. 14 / 456,880, filed August 11, 2014, by Damnjanovic et al., entitled "GroupACK / NACK for LTE in Unlicensed Spectrum," and filed August 13, 2013 by Damnjanovic et al., titled Priority is given to US Provisional Patent Application No. 61 / 865,497 for "GroupACK / NACK for LTE in Unlicensed Spectrum," assigned to the assignee of the present application, and expressly incorporated herein by reference. Background technique [0003] 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. [0004] A wireless communication network may include a number of access points. An access point of a cellular network may include a number of base stations, such as Node Bs (NBs)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/16H04W16/14H04W72/12
CPCH04L1/1614H04L1/1621H04W16/14H04W74/0816H04L5/0055
Inventor A·达姆尼亚诺维奇N·布尚W·陈D·P·马拉蒂季庭方骆涛魏永斌P·加尔
Owner QUALCOMM INC
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