Triggering random access channel procedure as a result of a comparison of stored and current buffer data

摘要

Disclosed is a mobile terminal (700) capable of indicating a service request for resource allocation to a base station scheduler through a random access channel, RACH, procedure in a communication system. The mobile terminal is comprised of a processor unit (710) which includes a data transmit buffer that buffers data to be transmitted in the communication system and a comparator that compares present buffer content status to the status of the stored latest transmitted buffer content. The mobile terminal (700) also includes a service request triggering mechanism that sends a single bit message on a random access channel to the scheduler, triggering the scheduler to assign uplink resources for data transmission, when a change in buffer status is detected at said comparison. The mobile terminal (700) further includes a memory unit (720) used to store the latest terminal buffer status data transmission and a communication interface (730).