A radio communication system includes a primary station which is arranged to
transmit
a series of data packets to a secondary station which operates according to an
ARQ scheme for acknowledging correct reception of each packet. The primary station
transmits error correction information relating to any packets that are not received
correctly, thereby enabling the secondary station to extract correctly the data.
The data packets are transmitted via a plurality of logical channels, so that an
error in transmission of one packet does not hold up transmission of packets in
other channels. Transfer of data transmission from one primary station to another
is done by transferring each channel when correct reception of a data packet on
that channel has been acknowledged, thereby avoiding the extra signaling required
in transferring logical channels in which a data packet has been received in error
and the error correction transmissions have not been completed.
