Method for communicating and radio station therefor

A method operable in a processor in a secondary station, said method causing the processor to execute the steps comprising:

• receiving data;
• determining an amount of said received data;
• determining a time since a last grant of resources was received and an amount of said received data;
• and
• transmitting a request for resources based on at least one of:
• said amount of said received data is greater than a first threshold when a grant of resources is available and a time since a last grant of resources is greater than a second threshold when a grant of resources is unavailable.

A secondary station comprising:

• a transceiving system;
• and
• a processor in communication with a memory, said memory including code, which when accessed by said processor causes said processor to execute the steps of:
• receiving a data packet containing an amount of data for subsequent transmission to a primary station from said transceiving system;
• determining whether a grant of uplink resource for transmission is available at a current time;
• when said grant of uplink resource for transmission is not available,
• determining a time of a previous request for uplink resources for transmission to said primary station,
• determining a difference between said current time and said time of a previous request for uplink resources;
• and
• transmitting, through said transceiving system, a request for uplink resources if said difference exceeds a threshold.

A secondary station comprising:

• a processing system:
• receiving data;
• determining an amount of said received data;
• determining a time since a last grant of resources was received and an amount of said received data;
• and
• transmitting a request for resources when said amount of said received data is greater than a first threshold when a grant of resources is available and a time since a last grant of resources is greater than a second threshold when a grant of resources is unavailable.

A method for communicating between a primary station and a secondary station comprising:

• at the secondary station, upon arrival of a data packet to be transmitted to the primary station, buffering said data packet in a buffer,
• determining whether an uplink transmission resource is available,
• transmitting to the primary station an indication of the amount of data contained in the buffer,
• determining whether a request condition is satisfied, said request condition being based on:
• at least one previous grant of uplink transmission resource;
• and
• also the time elapsed since a last transmission of the indication of the amount of data contained in the buffer but only when the secondary station has not received a grant of uplink transmission resource since the last transmission of the indication of the amount of data contained in the buffer,
• transmitting to the primary station a request for an uplink transmission resource if an uplink transmission resource is not available and the request condition is satisfied.

A secondary station comprising

• means for transmitting data and control information to a primary station on an uplink channel, the transmission of data requiring a previous grant of an uplink transmission resource from the primary station, the transmission of control information not requiring a previous grant of an uplink transmission resource, the control information including an indication of the amount of data contained in the buffer,
• buffering means for buffering in a buffer data packets arriving at the secondary station for transmission to the primary station,
• means for determining if an uplink transmission resource is available;
• means for determining if a request condition is satisfied, said request condition:
• being based on at least one previous grant of a uplink transmission resource;
• and
• also being based on the time elapsed since a previous transmission to the primary station of an indication of the amount of data contained in the buffer but only when the secondary station has not received a grant of uplink transmission resource since the last transmission of the indication of the amount of data contained in the buffer,
• means for requesting, the primary station to grant an uplink transmission resource, when an uplink transmission resource is not available and the request condition is satisfied.