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Method for enabling wireless operation in unlicensed spectrum

A spectrum and wireless transmission technology, applied in wireless communication, spectrum gap assessment, pilot signal allocation, etc., can solve the problem of unused spectrum resources

Inactive Publication Date: 2016-05-11
INTERDIGITAL PATENT HLDG INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, portions of this spectrum resource remain unused throughout the United States

Method used

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  • Method for enabling wireless operation in unlicensed spectrum
  • Method for enabling wireless operation in unlicensed spectrum
  • Method for enabling wireless operation in unlicensed spectrum

Examples

Experimental program
Comparison scheme
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Embodiment

[0170] CLAIMS 1. A method for use in a wireless transmit / receive unit (WTRU), the method comprising configuring the WTRU for component carrier operation.

[0171] 2. The method of embodiment 1, further comprising configuring the WTRU with a primary component carrier for control and link establishment, the primary component carrier operating in a licensed spectrum.

[0172] 3. The method as in any preceding embodiment, further comprising configuring the WTRU with a secondary component carrier for bandwidth extension, the secondary component carrier operating in unlicensed spectrum.

[0173] 4. The method as in any preceding embodiment, wherein the secondary component carrier is a non-backward compatible component carrier.

[0174] 5. The method as in any preceding embodiment, wherein cross-carrier scheduling is used to schedule secondary component carriers.

[0175] 6. The method as in any preceding embodiment, wherein a hybrid automatic repeat request is associated with a sec...

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Abstract

Methods are described herein for enabling wireless cellular operation in unlicensed and lightly licensed (collectively, license-exempt spectrum). Cognitive methods are used to enable the use of unlicensed frequency bands and / or the secondary use of less licensed frequency bands. A wireless device may use the license-exempt spectrum as a new frequency band in addition to existing frequency bands, to transmit to a wireless transmit / receive unit (WTRU) in the downlink direction, or to transmit to a base station in the uplink direction. Wireless devices can access unlicensed spectrum for bandwidth aggregation or trunking using the carrier aggregation framework. In particular, primary component carriers operating in licensed spectrum are used for control and connection establishment, and secondary component carriers operating in license-exempt spectrum are used for bandwidth extension.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application No. 61 / 420,257, filed December 6, 2010, the contents of which are hereby incorporated by reference. technical field [0003] This application relates to wireless communications. Background technique [0004] The Federal Communications Commission (FCC) originally conceived that unlicensed bands provided free slices of spectrum with only two regulations for public access. First, the transmitter must not cause harmful effects to any nearby licensed services, and second, any receivers in the band must be able to accept any interference that is present. An example of a license-exempt frequency band may be the Industrial, Scientific and Medical (ISM) radio frequency band, which is reserved for the use of wireless spectrum for USM purposes rather than communication purposes. Allocation of ISM frequency bands may be different in each country based on different...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00
CPCH04L5/001H04L5/0053H04L5/0055H04L27/0006H04L5/005H04L27/2657H04L27/2662H04W72/0453H04W72/0446H04W74/0808H04W72/23H04J11/0073H04J11/0076H04L5/0057H04W24/08H04W72/21
Inventor S·考尔E·巴拉T·邓K·沙阿K·K·凡加努鲁P·J·彼得拉什基S·E·泰利杨瑞G·S·史特恩贝格D·R·卡斯特R·V·普拉加达M·C·贝卢里J·A·斯特恩-波科维茨
Owner INTERDIGITAL PATENT HLDG INC
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