Patent ID: 7733832

Claim:
A method of transmitting control information for uplink data transmission in a User Equipment (UE), comprising: determining whether status of a current process to deliver uplink data on an Enhanced Uplink Dedicated Channel (E-DCH) is set as one of active and inactive; determining whether the current process meets a set of predetermined criteria in order to set a happy bit; setting the happy bit to “unhappy”, if all of the predetermined criteria are met, the happy bit taking on either an unhappy state value or a happy state value, each state value indicating respectively whether the UE is able to use more resources or not; and transmitting control information comprising the happy bit to a Node B on an Enhanced-Dedicated Physical Control Channel (E-DPCCH) associated with an Enhanced-Dedicated Physical Data Channel (E-DPDCH), with transmission of the uplink data on the E-DPDCH, wherein, if the current process is active, the set of predetermined criteria includes (i) the UE has adequate power available to transmit at a higher data rate than a current data rate, (ii) a total buffer status in the UE indicates that the UE requires more than a predetermined time delay to transmit data in the buffer, and (iii) the UE is transmitting E-DCH data at an allowed maximum data rate indicated by a serving grant, and if the current process is inactive, the set of predetermined criteria includes (iv) the UE has adequate power available to transmit at a higher data rate than a current data rate, (v) a total buffer status in the UE indicates the UE requires more than a predetermined time delay to transmit data in the buffer, and (vi) a condition of the UE transmitting E-DCH data at an allowed maximum data rate indicated by a serving grant is always true.