Abstract:
CSMA/CA 기반의 무선 랜상에서 수신 소비 전력 제어 방법 및 장치가 개시된다. 본 발명은 계층구조를 이용하여 무선신호를 송수신하는 스테이션에서 무선신호를 수신할 때 소비되는 전력을 제어하는 방법에 있어서, 무선신호에 포함된 정보로부터 제1 계층 및 제2계층 전력제어에 필요한 전송속도 및 전송구간 정보를 추출하는 단계; 추출된 정보들로부터 제1 및 제2계층의 전력 제어 구간을 결정하는 단계; 및 추출된 정보에 포함된 수신 주소가 스테이션의 해당 주소와 일치하지않으면, 제1 및 제2계층을 소정 상태로 전환하여 전력 제어 구간동안 제1 및 제2계층에서 소비되는 전력을 감소시키는 단계를 포함하고, 상기 제1계층은 RF계층이고, 상기 제2계층은 기저대역계층인 것을 특징으로한다.
Abstract:
Disclosed is a method for preventing transmission delay occurring when transmitting packet data to a destination in a transmission module including a first memory having a first memory area for storing packet data to be transmitted and a second memory area for backing up the first memory area, a second memory connected to a transmission link, and a frame processor. The method comprises storing a copy of the packet data stored in the second memory area according to a state of the second memory; deleting the packet data stored in the second memory area if copy of the packet data stored in the second memory is transmitted; determining whether packet data combining is possible according to a state of the second memory area; and if the packet data combining is possible, combining the packet data stored in the first memory area with the packet data stored in the second memory area and storing the combined packet data in the second memory.
Abstract:
PURPOSE: An apparatus and method for minimizing transmission delay in a data communication system is provided to prevent the transmission delay of packet data by temporarily storing the packet data to be transmitted to a transmitting buffer in a backup queue, directly transmitting the packet data when the transmitting buffer is in an idle state, and aggregating and transmitting newly received packet data and the previously received packet data in case that the transmitting buffer is in a busy state. CONSTITUTION: A transmission module for aggregation consists of a transmission management part(110) and a transmission protocol engine part(120). The transmission management part(110) covers the management of transmission data and preprocessing for a protocol header. The transmission protocol engine part(120) transmits actual packet data according to a transmission protocol. The transmission management part(110) is composed of a transmitting queue(111) and a frame processor(113). The transmitting queue(111) stores data for data management. The frame processor(113) aggregates the packet data stored in the transmitting queue(111). In addition, the transmission management part(110) comprises a backup queue(112) that temporarily stores the packet data to be transmitted to the transmission protocol engine part(120).