Patent ID: 9603048
Date: 2017-03-21
CPC Classifications: H04L,H04W

Claim:
1. A method for detecting cell congestion in a wireless communication network, the method comprising: selecting, at a wireless transmit/receive unit (WTRU), a Physical Random Access Channel (PRACH) resource set out of a plurality of PRACH resource sets, wherein each PRACH resource set of the plurality of PRACH resource sets comprises one or more physical resource block (PRBs) that can be used for a preamble transmission, and each of the plurality of PRACH resource sets is associated with a priority level; sending, from the WTRU, a preamble transmission to a cell during a random access procedure using one of the selected PRACH resource set; determining, at the WTRU, whether the WTRU received a Random Access Response (RAR); and determining, at the WTRU, a congestion state of the cell based on at least: