Method and apparatus for performing backoff in wireless communication system

摘要

A method and apparatus for performing backoff in a wireless communication system is provided. A user equipment (UE) identifies a prioritized access, receives a backoff parameter from a network, and determines whether or not to apply the received backoff parameter according to the prioritized access. The prioritized access corresponds to one of emergency access, high priority access, control element/information in media access control (MAC), radio link control (RLC) or packet data convergence protocol (PDCP), data radio bearer (DRB) for voice/video service, signaling radio bearer (SRB) 0, SRB 1, SRB 2, multimedia telephony service (MMTEL)-voice, MMTEL-video, and voice over long-term evolution (VoLTE).

主权项

1. A method for performing, by a user equipment (UE), backoff in a wireless communication system, the method comprising:
identifying a prioritized access; receiving a backoff parameter, a special backoff parameter, and a probability factor from a network, wherein the backoff parameter and the special backoff parameter are received together via one random access response message; and determining whether or not to apply the received backoff parameter according to the special backoff parameter, the prioritized access and the received probability factor, wherein a Medium Access Control (MAC) protocol data unit (PDU) for the random access response message includes a special backoff indicator field for indicating an existence of the special backoff parameter in a MAC subheader.