Patent ID: 8995258
Filing Date: 2015-03-31
Classification: H04L,H04W

Abstract:
1. A radio communication apparatus mounted on a mobile body that establishes a local network using a plurality of terminals and configured to relay a packet transmitted and received between a predetermined terminal connected to the local network and a server connected to an external network, which is another network, the radio communication apparatus comprising: a non-transitory storage medium storing instructions, which when executed, cause the radio communication apparatus to perform as: when communication quality of a communication connection having a predetermined priority degree is equal to or lower than a priority degree non-permission threshold, which is a threshold for not permitting establishment of a communication connection having a priority degree lower than the predetermined priority degree, the priority-degree determining unit sets the policy information to discard an establishment request packet for a communication connection having a priority degree lower than the predetermined priority degree, when communication quality of a communication connection having a predetermined priority degree is equal to or lower than a low priority degree band limit threshold, which is a threshold for limiting a band of a communication connection having a priority degree lower than the predetermined priority degree, the priority-degree determining unit determines that the band of the communication connection having the priority degree lower than the predetermined priority degree is set smaller than a band of the communication connection having the predetermined priority degree, the traffic control unit sets, according to the determination by the priority-degree determining unit the band of the communication connection having the priority degree lower than the predetermined priority degree smaller than the band of the communication connection having the predetermined priority degree and performs transmission of a packet, when communication quality of the communication connection having the predetermined priority degree is equal to or lower than a low priority degree disconnection threshold. which is a threshold for disconnecting the communication connection having the priority degree lower than the predetermined priority degree the lower priority degree disconnection threshold less than the low priority degree band limit threshold, the priority-degree determining unit deletes a record of the communication connection having the low priority degree from the quality recording section and determines that a reset packet is transmitted to a server and a terminal that establish the communication connection, the traffic control unit transmits the reset packet to the server and the terminal according to the determination by the priority-degree determining unit, wherein, when an establishment request packet for a communication connection is further received from a server or a terminal that establishes the communication connection having the low priority degree, the priority-degree determining unit changes the policy information to discard the establishment request packet, and wherein, when the communication quality of the communication connection having the predetermined priority degree is larger than the low priority degree disconnection threshold, the priority-degree determining unit resets the changed policy information to a state before the change.