Patent ID: 9629082
Date: 2017-04-18
CPC Classifications: H04L,H04W,Y02D

Claim:
1. A radio communication system in which a radio terminal is capable of communicating with a radio base station by using a plurality of component carriers (CCs) each having a different frequency, comprising: a first processor, comprising hardware, configured to commonly control a cycle of a reception start timing for a predetermined channel in the radio terminal among all of the CCs, which are assigned to the radio terminal; a second processor, comprising hardware, configured to activate a hybrid automatic repeat-request (HARQ) round trip timer (RTT)Timer and a drx-RetransmissionTimer for each of the CCs, and in case that any of the CCs receives a predetermined signal, to start or re-start a drx-InactivityTimer, and when the drx-InactivityTimer expires, to start or re-start a drxShortCycleTimer; and a third processor, comprising hardware configured to commonly carry out a transition to LongDRX on all of the CCs when the drxShortCycleTimer expires.