Patent ID: 9054869
Filing Date: 2015-06-09
Classification: H04L,H04W

Abstract:
1. A method comprising: initiating a reordering buffer timer, where the reordering buffer timer defines a time that a reordering function waits for missing packets from a sequence of packets; determining that the missing packets have been lost after a period of inactivity when the reordering buffer timer has expired; initiating, by a user equipment not in a dedicated channel connection state, a reception inactivity timer in response to receipt of a last data packet, wherein the reception inactivity timer is a different timer from the reordering buffer timer; after a specific time has gone by, adjusting, by the user equipment not in a dedicated channel connection state, the reception inactivity timer if no additional data packet intended for the user equipment has been received by then, such that the reception inactivity timer counts the time from the last received data packet received by the user equipment; determining whether a data packet intended for the user equipment has been received before the reception inactivity timer reaches an inactivity threshold time; if an intended data packet has been received before the reception inactivity threshold was reached, resetting the reception inactivity timer; and if an intended data packet has not been received before the reception inactivity threshold was reached, resetting a transmission sequence number counter which provides a running sequence number for each packet received of the sequence of packets.