Communication device, network node, and communication server

摘要

Disclosed is a technique for enabling a device that needs to send high priority and high bandwidth user plane traffic to send the user plane traffic even in the case where a group bandwidth has an upper limit in group-based communication. According to the technique, when an MTC device that is to send high priority and high bandwidth user plane traffic sends a service request to a network node (P-GW 213a), the network node allows use of a minimum bandwidth bearer in the case where the upper limit of the group bandwidth is exceeded. The MTC device sends a traffic sending request to an MTC server 214a via the bearer. The MTC server stops traffic of an appropriate other MTC device, to secure a bandwidth for the MTC device having the high priority and high bandwidth user plane traffic.

主权项

1. A communication device in a system in which a plurality of communication devices communicate with a communication server via a network and a sum total of communication bit rates assigned to the plurality of communication devices is not to exceed a predetermined upper limit, the communication device comprising a processor having one or more integrated circuits configured to:
determine whether or not to send high priority and high bit rate traffic to the communication server; send to the network a service request for sending the high priority and high bit rate traffic, in the case where the high priority and high bit rate traffic is determined to be sent; receive from the network a service request response that is a response to the service request and includes a bearer identifier of a bearer via which the high priority and high bit rate traffic is unable to be sent; send to the communication server a traffic sending request for the high priority and high bit rate traffic via the bearer identified by the bearer identifier; receive from the communication server a sending request response that is a response to the traffic sending request and includes information indicating whether or not the high priority and high bit rate traffic is able to be sent; and send the high priority and high bit rate traffic to the communication server, in the case where the high priority and high bit rate traffic is determined to be able to be sent from the sending request response, wherein the communication device is one of the plurality of communication devices.