Patent ID: 9717057
Date: 2017-07-25
CPC Classifications: H04W

Claim:
1. An uplink congestion control method, comprising steps of: determining, by a base station, that a congestion status of a serving cell is changed based on a rise over thermal (RoT) measurement, wherein the determining includes comparing the RoT measurement to a threshold value based on cell coverage of the serving cell, and wherein the RoT measurement is performed every radio frame or every multiple of radio frames to provide a first power control and a Signal to Interference Ratio is measured for every time slot to provide a second power control; sending, by the base station, to a set of user equipment (UEs) a signaling to indicate the change of the congestion status and a UE transmission power reduction level, wherein the set of UEs are selected from a plurality of UEs based on the set of UEs being enhanced transmission format combination (E-TFC) reselection enabled; and performing an uplink congestion control based on the RoT measurement and E-TFC reselection by at least one UE from the set of UEs, wherein the E-TFC reselection is based at least on the indicated change of the congestion status and the UE transmission power reduction level.