PAN9026 Wi-Fi/BT Module
2 Product Overview
Product Specification Rev. 0.1
Page 28
2.7.9 ZigBee (MWS) Coexistence Capability
ZigBee is based on the IEEE 802.15.4 standard and it is used by a suite of communication
protocols to create Personal Area Networks (PANs) supporting home automation, lighting
control, etc. ZigBee radios operate in the 2.4 GHz ISM band worldwide. Unlike Bluetooth, the
ZigBee specification does not use AFH. When coexisting with WLAN/Bluetooth in the 2.4 GHz
band, it is important to avoid co-channel (IB) operation of these radios.
The device re-uses the MWS coexistence interface to support ZigBee coexistence. The
coexistence logical signaling is used to allow a ZigBee device and a WLAN/Bluetooth combo
device to exchange information and support cooperative coexistence.
Coexistence Signals
The logical signals used for ZigBee and WLAN/Bluetooth coexistence are a subset of the LTE
coexistence signaling. Considering the lower data rate of ZigBee packets, a lower baud rate
may be chosen for the 2-wire UART physical interface. The BCA supports 3-way arbitration
among ZigBee/WLAN/Bluetooth requests.
Coexistence Signals
Signal Name
Direction
MWS_RX
MWS to Bluetooth
MWS_TX
MWS to Bluetooth
MWS_PATTERN
MWS to Bluetooth
MWS_RX_PRI
MWS to Bluetooth
MWS_TX_PRI
MWS to Bluetooth
802_RX_PRI
Bluetooth to MWS
802_TX_ON
Bluetooth to MWS
BT_RX_PRI
Bluetooth to MWS
BT_TX_ON
Bluetooth to MWS
Содержание PAN9026
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