Method and apparatus for requesting resources in a wireless communication system

A method for a User Equipment (UE) to request resources in a wireless communication system, comprising:

• establishing a connection with a base station (BS);
• sending a first scheduling request (SR) to the BS;
• receiving a control signal from the BS;
• sending a scheduling assignment (SA) associated with the control signal at a first timing;
• considering a data available in the UE at a second timing, wherein the data needs to be transmitted and the second timing is later than the first timing;
• determining whether there is an available resource associated with the SA for transmitting the data;
• transmitting the data on the available resource at a third timing, wherein the third timing is later than the second timing.

A method for a User Equipment (UE) to request resources in a wireless communication system, comprising:

• establishing a connection with a base station (BS);
• sending a first scheduling request (SR) to the BS;
• receiving a control signal from the BS;
• sending a scheduling assignment (SA) in a SA period at a first timing;
• considering a data available in the UE at a second timing, wherein the data needs to be transmitted and the second timing is later than the first timing;
• triggering a Buffer Status Report (BSR) associated with the data;
• cancelling the BSR since the amount of remaining resources associated with the SA can accommodate the data;
• transmitting the data on the remaining resource at a third timing, wherein the third timing is later than the second timing.