LTE-U uplink waveform and variable multi-subframe scheduling

A technology of subframes and link resources, which is applied in the directions of multiple use of transmission paths, subchannel allocation of transmission paths, multiplexing communication, etc., which can solve the problem of increasing interference and congestion in the network, and reducing downlink and uplink performance And other issues

Active Publication Date: 2016-05-04
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This interference can degrade performance on both the downlink and uplink
[0007] As the demand for mobile broadband access continues to increase, the likelihood of inter

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  • LTE-U uplink waveform and variable multi-subframe scheduling
  • LTE-U uplink waveform and variable multi-subframe scheduling
  • LTE-U uplink waveform and variable multi-subframe scheduling

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Embodiment Construction

[0051] The following detailed description in conjunction with the accompanying drawings is intended to be an illustration of various configurations, rather than to indicate that the design concept described herein can only be realized through these configurations. The detailed description includes specific details for the purpose of providing a thorough understanding of various design concepts. It will be apparent, however, to one skilled in the art that these design concepts may be practiced without these specific details. In some instances, well-known structures and components are shown in block diagram form in order to avoid obscuring these design concepts.

[0052] The techniques described herein are not limited to LTE, but may also be used in various wireless communication networks and systems such as CDMA, TDMA, FDMA, OFDMA, SC-FDMA, and other networks. The terms "network" and "system" are often used interchangeably. A CDMA network may implement a radio technology such...

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Abstract

The invention relates to LTE-U uplink waveform and variable multi-subframe scheduling. Uplink waveforms for operating long term evolution (LTE) in an unlicensed band (i.e., long term evolution-unlicensed (LTE-U) communication) are disclosed. Carrier aggregation (CA) and standalone (SA) are disclosed. LTE on the licensed channel may provide both control and data, and LTE on the unlicensed channel may provide data. Managing variable transmission time interval (TTI) continuous transmission is disclosed for transmission over multiple subframes of an unlicensed carrier in LTE-U. Listen-before-talk (LBT) requirements of unlicensed carriers provide for additional channel occupancy constraints when scheduling resources for multiple UEs for variable TTI continuous uplink transmissions over multiple subframes. A joint control channel is disclosed that provides control information for all of the potentially available subframes to be scheduled for the uplink transmissions. In addition to management of the variable TTI continuous transmissions, adjustments to uplink signal parameters are also disclosed that address the constraints due to the LBT requirements of unlicensed carriers.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of U.S. Provisional Patent Application Serial No. 61 / 881,381, filed September 23, 2013, entitled "LTE-UUPLINK WAVEFORM" and filed September 23, 2013, entitled "VARIABLEMULTI-SUBFRAMESCHEDULING priority of U.S. Provisional Patent Application Serial No. 61 / 881,299. Therefore, the entire content of the aforementioned application is incorporated herein by reference. technical field [0003] Aspects of the present application relate generally to wireless communication systems, and more particularly, to methods for performing wireless communications using Long Term Evolution-Unlicensed (LTE-U) uplink waveforms and variable multi-subframe scheduling in an LTE-U communication system. method of transmission. Background technique [0004] Wireless communication networks are widely deployed to provide various communication services such as voice, video, packet data, messaging, broadcasting, a...

Claims

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Application Information

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IPC IPC(8): H04L5/00
CPCH04L5/0041H04L5/0048H04L5/0094H04L5/0053H04J3/16H04J13/10H04W16/14H04W72/0453H04W74/002H04W74/0866
Inventor 季庭方骆涛N·布尚D·P·马拉蒂魏永斌P·加尔A·达姆尼亚诺维奇W·陈S·耶拉马利
Owner QUALCOMM INC
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