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Fast signal identification of Bluetooth, Zigbee and other network protocols

A signal identification and network signal technology, applied in network topology, modulation type identification, network traffic/resource management, etc.

Pending Publication Date: 2022-02-22
SILICON LAB INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Unmanaged approaches currently in use are insufficient to address these issues associated with the coexistence of multiple network protocols

Method used

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  • Fast signal identification of Bluetooth, Zigbee and other network protocols
  • Fast signal identification of Bluetooth, Zigbee and other network protocols
  • Fast signal identification of Bluetooth, Zigbee and other network protocols

Examples

Experimental program
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Embodiment Construction

[0021] figure 1 A block diagram of a system with a WiFi network controller and a lower power network controller is shown. Throughout this disclosure, the term "lower power network" is used to refer to any network protocol that operates in the same spectrum as a WiFi network and uses lower power. For example, ZIGBEE®, Bluetooth®, and Bluetooth Low Energy (BLE) all operate in the same 2.4GHz spectrum as WiFi. Other network protocols layered on top of IEEE 802.15.4 will also operate in the 2.4GHz spectrum. Furthermore, although reference is made to 2.4 GHz throughout this disclosure, it should be understood that the techniques and systems described herein are also applicable to any frequency spectrum where both high power devices and lower power networks coexist.

[0022] figure 1A WiFi controller 10 and a lower power network controller 20 are shown. Although figure 1 These devices are shown as two separate devices, but it is understood that in some embodiments these devices...

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PUM

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Abstract

A system and method for detecting the presence of a Bluetooth or Zigbee signal within a short period of time is disclosed. The signal identification circuit has two stages, a first stage that processes windows to determine whether noise is present, and a second stage that processes long windows to determine whether the signal is a particular lower-power network protocol. The signal identification circuit can be configured to detect Bluetooth at 1 Mbps, Bluetooth at 2 Mbps or Zigbee. The signal identification signal may be used to allow a lower-power network controller to coexist with a high duty cycle WiFi controller. The signal identification circuit may also be used for other functions, such as powering on a lower-power network controller, determining CCA, or determining which channel a packet is being transmitted on.

Description

technical field [0001] The present disclosure describes systems and methods that allow the detection and coexistence of multiple network protocols in close proximity to each other, and more specifically, allow the detection of ZigBee or Bluetooth, such as in a WiFi environment. Background technique [0002] The proliferation of networks, especially in the 2.4GHz band, has created challenges for those attempting to utilize multiple network protocols. For example, ZigBee and Bluetooth Low Energy (BLE) both operate in the 2.4GHz spectrum and are considered low power protocols. However, WiFi with much higher transmit power levels also operates in this spectrum. Therefore, these various protocols may interfere with each other, resulting in reduced throughput or data loss. [0003] Currently, however, most solutions to this problem are unmanaged, which means asking customers to maximize RF isolation. This can be done by trying to physically separate the antennas associated with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/00H04W24/08
CPCH04L27/0012H04W24/08H04L27/0014H04L2027/0026H04W72/1215H04W4/80H04W84/12H04W88/06H04W84/18H04W28/14H04L1/1685H04W72/23
Inventor G·阿斯兰周炎勾壑
Owner SILICON LAB INC