Activation of semi-persistent resource allocations in a mobile communication network

A method for allocating radio resources to a mobile terminal for uplink transmission in a mobile communication system, the method comprising the following steps performed by a base station in the radio access network of the mobile communication system:

• generating control information for activating a semi-persistent resource allocation of the mobile terminal, wherein the control information comprises two resource assignments for uplink transmission, wherein the two resource assignments are destined to the mobile terminal which is to activate the semi-persistent resource allocation,
• mapping the control information to downlink physical control channel resources, and
• transmitting the downlink physical control channel resources comprising the control information,
• wherein a second resource assignment of the two resource assignments is transmitted with a time offset equal to one Hybrid Automatic Repeat reQuest (HARQ) round-trip time relative to a first resource assignment of the two resource assignments.

A base station for use in a radio access system of a mobile communication system, the base station comprising:

• a processing unit that generates control information for activating a semi-persistent resource allocation of the mobile terminal, wherein the processing unit is configured to generate control information comprising two resource assignments for uplink transmission, and to destine the resource assignments to a mobile terminal which is to activate the semi-persistent resource allocation,
• a mapping unit that maps the control information to downlink physical control channel resources, and
• a transmitter unit that transmits the downlink physical control channel resources comprising the control information,
• wherein a second resource assignment of the two resource assignments is received with a time offset equal to one Hybrid Automatic Repeat reQuest (HARQ) round-trip time relative to a first resource assignment of the two resource assignments.