ENHANCED PREAMBLE WAVEFORM FOR COEXISTENCE
First Claim
1. A method of wireless communication over a frequency channel shared by a first radio access technology (RAT) and a second RAT, comprising:
- generating, by a device employing the second RAT, a plurality of training fields of a preamble signal, wherein one or more of the plurality of training fields has a signal property that is associated with detection by devices employing the first RAT, and wherein the preamble signal conveys at least one characteristic that is associated with the second RAT; and
transmitting the preamble signal over the frequency channel.
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Accused Products
Abstract
Methods, systems, and devices are described for wireless communication at a device. A Long Term Evolution Unlicensed (LTE-U) device may transmit an enhanced preamble that may be understood by Wireless Local Area Network (WLAN) devices, in addition to conveying a characteristic that is detectable by receiving LTE-U devices. The transmitting LTE-U device may generate the enhanced preamble by generating a first training field and a second training field. The characteristic that is detectable by receiving LTE-U devices may be a phase shift between the first and second training fields. Additionally or alternatively, the characteristic may be a sequence or tone mapping of the first or second training field. In some cases, the transmitting LTE-U device may introduce a third training field to the preamble which serves as the characteristic.
22 Citations
26 Claims
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1. A method of wireless communication over a frequency channel shared by a first radio access technology (RAT) and a second RAT, comprising:
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generating, by a device employing the second RAT, a plurality of training fields of a preamble signal, wherein one or more of the plurality of training fields has a signal property that is associated with detection by devices employing the first RAT, and wherein the preamble signal conveys at least one characteristic that is associated with the second RAT; and transmitting the preamble signal over the frequency channel. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of wireless communication, comprising:
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receiving a preamble signal over a frequency channel shared by a first radio access technology (RAT) and a second RAT, the preamble signal comprising a plurality of training fields, wherein one or more of the plurality of training fields has a signal property that is associated with detection by devices employing the first RAT, and wherein the preamble signal conveys at least one characteristic that is associated with the second RAT; and determining that a transmitter device associated with the received preamble signal is associated with the second RAT by identifying, in the received preamble signal, the signal property that is associated with detection by devices employing the first RAT and detecting the at least one characteristic that is associated with the second RAT. - View Dependent Claims (9, 10, 11, 12, 13)
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14. An apparatus for wireless communication over a frequency channel shared by a first radio access technology (RAT) and a second RAT, the apparatus employing the second RAT and comprising:
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a processor; memory in electronic communication with the processor; and instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to; generate a plurality of training fields of a preamble signal, wherein one or more of the plurality of training fields has a signal property that is associated with detection by devices employing the first RAT, and wherein the preamble signal conveys at least one characteristic that is associated with the second RAT; and transmit the preamble signal over the frequency channel. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. An apparatus for wireless communication, comprising:
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a processor; memory in electronic communication with the processor; and instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to; receive a preamble signal over a frequency channel shared by a first radio access technology (RAT) and a second RAT, the preamble signal comprising a plurality of training fields, wherein one or more of the plurality of training fields has a signal property that is associated with detection by devices employing the first RAT, and wherein the preamble signal conveys at least one characteristic that is associated with the second RAT; and determine that a transmitter device associated with the received preamble signal is associated with the second RAT by identifying, in the received preamble signal, the signal property that is associated with detection by devices employing the first RAT and detecting the at least one characteristic that is associated with the second RAT. - View Dependent Claims (22, 23, 24, 25, 26)
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Specification