Patent ID: 8111652
Filing Date: 2012-02-07
Classification: H04L,H04W

Abstract:
1. A base station comprising: an attaching unit configured to attach a request value to a packet received from a core network based on a quality of service (QoS) class for the packet in the core network, wherein the attaching includes attaching, to the received packet, a request value for communication quality corresponding to a high priority class as a target value for communication quality used by the base station to perform transmission control when the QoS class for the received packet is a high priority class, and not attaching a request value to the received packet when the QoS class for the received packet is a low priority class; a packet classification unit configured to classify each packet received/transmitted from/to a plurality of mobile stations into a quantitative guarantee type packet having a request value, which indicates a quantitative value for communication quality, included in the quantitative guarantee type packet or a relative guarantee type packet not having a request value included in or attributed to the relative guarantee type packet when the relative guarantee type packet is received and classified or classified and transmitted, the request value indicating a quantitative value for communication quality; a quantitative guarantee type buffer configured to store quantitative guarantee type packets received/transmitted from/to the plurality of mobile stations; a relative guarantee type buffer configured to store relative guarantee type packets received/transmitted from/to the plurality of mobile stations; a transmission order controller configured to control a transmission order of the packets for every classified quantitative guarantee type packet in the quantitative guarantee type buffer and every classified relative guarantee type packet in the relative guarantee type buffer, the transmission order of each quantitative guarantee type packet in the quantitative guarantee type buffer being based on a corresponding quantitative value and independent of a respective mobile station from/to which the packet is received/transmitted; a radio resource assignment unit configured to assign radio resources to the quantitative guarantee type packets in the quantitative guarantee type buffer and the relative guarantee type packets in the relative guarantee type buffer, according to the transmission order controlled by the transmission order controller, wherein if radio resources still remain after assignment to the quantitative guarantee type packets in the quantitative guarantee type buffer, the radio resource assignment unit assigns remaining radio resources to the relative guarantee type packets in the relative guarantee type buffer; a plurality of quantitative guarantee type transmission buffers configured to store quantitative guarantee type packets awaiting transmission; and a measurement unit configured to measure a transmission rate of the quantitative guarantee type packets transmitted from the quantitative guarantee type transmission buffers for each request value for each quantitative guarantee type packet in a unit time by the radio resource assignment unit as an average transfer speed, wherein the transmission order controller compares the request value with the average transfer speed and controls the transmission order based on a result of the comparison, and the packet classification unit restrains storing a quantitative guarantee type packet in one of the plurality of quantitative guarantee type transmission buffers when the average transfer speed is more than a corresponding request value.