Communications session management

A method of managing a communications session involving reception of radio blocks by a mobile unit on a set of multiple available time slots, said method comprising:

• said mobile unit performing other time slot-demanding communications, during said communications session, on a time slot in a subsequent time slot frame on which a radio block is expected to be received, where said time slot is selected based on information contained in a previous time slot on which a previous radio block has been received in a previous time slot frame in order to reduce the probability of loss of data for said communications session,
• wherein information contained in the radio block in the subsequent time slot frame is the same as or is derivable from the information contained in the radio block in the previous time slot frame.

A system for enabling, during an ongoing communications session involving transmission of radio blocks to a mobile unit on a set of multiple available time slots, other temporary channel-demanding communications for said mobile unit, said system comprising one or more processing units configured to:

• select a time slot from said time slot set for transmitting a radio block based on information contained in a previous time slot on which a previous radio block has been transmitted to and received at said mobile unit in a previous time slot frame, said information contained in the radio block is the same as or is derivable from the information contained in the previous radio block to enable said mobile unit to perform said other temporary channel-demanding communications on said selected time slot with reduced probability of loss of data for said communications session.