A WIRELESS CONFERENCE SYSTEM WITH EARLY PACKET LOSS DETECTION

A wireless conference system (100) comprises an access point (101; 300) and a plurality of conference units (111-115; 200), configured for bi-directional, TDMA based wireless communication of latency sensitive audio data packets. The access point (101; 300) and conference units (111-115; 200) comprise clocks (203; 303) that are actively synchronised, generating local audio clock signals used for processing the audio data packets and local synchronisation clock signals used for the TDMA based wireless communication. The conference units (111-115; 200) and access point (101; 300) comprise a transceiver (201; 301). Therein, the receiver (220; 320) comprises a packet loss detection unit (222; 322) configured to detect loss of an audio data packet and comprising:- means (223; 323) to determine an expected arrival time for an audio data packet from the local synchronisation clock signal and from a predetermined expected transmission delay, and- means (224; 324) to detect that the audio data packet is lost if it has not arrived by the expected arrival time.The receiver (220; 320) further comprises a packet loss concealment unit (225; 325) configured to generate a replacement packet for a lost audio data packet.