What is BR (Bandwidth Request)

Bandwidth Request (BR) alludes that a mobile station utilizes to inform the serving BS about the requirement for UL bandwidth allocation. Bandwidth requests in independent plans are made in the quantity of bytes expected to convey the MAC PDU, barring the physical layer overhead. The bandwidth request message from the MS demonstrates the size of the payload barring any header, security, or other MAC PDU overhead that are incorporated during transmission over the air interface.