User's Manual
Table Of Contents
- UniStone
- 1 General Device Overview
- 2 Basic Operating Information
- 3 Interfaces
- 4 General Device Capabilities
- 5 Bluetooth Capabilities
- 6 Electrical Characteristics
- 7 Package Information
- 8 Acronyms & Abbreviations
UniStone
Interfaces
Product Overview 19 T3130-8XV10PO5-7600, 2007-01-31
3.3 WLAN Coexistence Interface
UniStone has a WLAN coexistence interface that is based on the IEEE 802.15.2 Packet
Traffic Arbitration (PTA) scheme
1)
. The interface prevents interference between
collocated WLAN and Bluetooth devices by not letting the two devices transmit and/or
receive at the same time. WLAN packets and Bluetooth packets are assigned priorities,
and a control unit decides on a per-packet basis which of the devices that should be
allowed to operate.
The interface uses three wires as shown in Figure 3-3.
1)
“802.15.2: Coexistence of Wireless Personal Area Networks with other Wireless Devices Operating in
Unlicensed Frequency Bands”, IEEE, 28 August 2003
Figure 3-3 WLAN Coexistence Interface
TX_CONF
SLOT_STATE
RF_ACTIVE
Control
Unit
Host
Host UniStone