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Wireless communication device, system and method to provide an operational cyclic prefix length to decode a wake-up packet

A technology of wireless communication equipment and cyclic prefix length, applied in wireless communication, multi-frequency code system, transmission system, etc., can solve the problem of not knowing the cyclic prefix length of the wake-up payload, low-power wireless devices unable to decode the low-power wake-up payload, etc. question

Pending Publication Date: 2018-10-23
INTEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, low-power wireless devices are bandwidth-limited and power-limited, but may also need to use newer protocols and legacy station protocols to operate
Additionally, low-power wireless devices cannot decode low-power wake-up payloads addressed to them, where the cyclic prefix length of the wake-up payload may not be known to low-power wireless devices

Method used

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  • Wireless communication device, system and method to provide an operational cyclic prefix length to decode a wake-up packet
  • Wireless communication device, system and method to provide an operational cyclic prefix length to decode a wake-up packet
  • Wireless communication device, system and method to provide an operational cyclic prefix length to decode a wake-up packet

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0029] According to a first embodiment, a wake-up radio such as an LP-WUR will know that all wake-up payloads will have a uniform or fixed CP length. As a result, the wake-up radio considers the operating CP length to be equal to the fixed CP length, and will use the fixed CP length to decode the wake-up payload. In order to be able to operate in various scenarios, such as both indoor and outdoor scenarios, one embodiment contemplates that the fixed CP length will be equal to the longest possible CP length in a given environment, such as for The longest CP length supported by a packet demodulated by the primary radio system. Thus, as an example, if the primary radio system supports 802.11n, the fixed CP length may be equal to the longest CP length supported for 802.11n packets. Although the latter embodiment may increase overhead due to unnecessarily using the longest CP length, this first embodiment generally provides the advantage that no separate CP length and symbol dura...

example 1

[0078] Example 1 includes a wireless communications device including memory and processing circuitry including logic to decode a wake-up payload using an operational cyclic prefix length of a packet when a master radio associated with the device is in a sleep state, wherein the operational cyclic prefix length is one of a fixed cyclic prefix length, a cyclic prefix length for the last packet transmission of the master radio, and a selected cyclic prefix length determined by the processing circuitry; waking the master radio based on the wake-up payload, to enable the master radio to process subsequent packets after waking up.

example 2

[0079] Example 2 includes the subject matter of Example 1, and optionally, wherein the modulation rate for the wake-up payload is lower than the lowest modulation rate for subsequent packets.

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PUM

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Abstract

The application relates to a wireless communication device, system and method to provide an operational cyclic prefix length to decode a wake-up packet. The wireless communication device comprises a memory, and processing circuitry including logic. The processing circuitry is to decode a wake-up payload, when a main radio associated with the device is in a sleep state, using an operational cyclicprefix length for the packet. The operational cyclic prefix length may be one of a fixed cyclic prefix length, a cyclic prefix length used for a last packet transmission by the main radio, and a selected cyclic prefix length determined by the processing circuitry. The processing circuitry may further cause a wake-up of the main radio based on the wake-up payload to allow the main radio to processa subsequent packet after waking up.

Description

technical field [0001] Embodiments relate to wireless communication in low power settings. Some exemplary embodiments relate to the construction of Low Power Wake Up (LP-WU) packets for waking up Wireless Local Area Network (WLAN) devices with Low Power Wake Up Receivers (LP-WUR) within IEEE 802.11 networks. Background technique [0002] Low power wireless devices enable the deployment of many wireless devices in wireless local area networks (WLANs). However, low power wireless devices are bandwidth limited and power limited, but may also need to use newer protocols and legacy station protocols to operate. Additionally, low-power wireless devices cannot decode low-power wake-up payloads addressed to them, where the cyclic prefix length of the wake-up payload may not be known to the low-power wireless devices. Contents of the invention [0003] In accordance with an embodiment of the present invention, a wireless communication device is provided that includes memory and p...

Claims

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Application Information

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IPC IPC(8): H04W52/02H04L5/00H04L27/26
CPCH04L5/0048H04L27/261H04W52/0229H04L27/2603H04W76/28H04W52/0235H04L27/2607H04W84/12Y02D30/70H04L27/2613H04L27/2666
Inventor 方娟S·阿齐兹M·朴
Owner INTEL CORP