Abstract:
본 발명은 이동통신 시스템에 관한 것으로, 보다 상세하게는 이동통신 시스템의 기지국에서 무선자원 할당을 위한 스케줄링(Scheduling) 방법에 관한 것으로, 상기 방법은 사용자 단말을 타겟으로 하는 패킷을 전송받아 사용자별 전송대기 큐에 저장하는 단계와; 사용자별 전송대기 큐의 패킷 유입량에 의한 패킷누적량과 채널영향에 의한 사용자별 평균 전송률을 산출하여 이를 무선자원 할당을 위한 우선순위함수식에 반영하여 얻어진 값들에 기초하여 무선자원 할당하는 단계;를 포함함을 특징으로 한다. 이로써 본 발명은 무선 채널 상황 뿐만 아니라 각 사용자별 단위시간당 패킷 유입량을 고려하여 이에 비례하게 무선 자원 할당함으로써, 높은 시스템 전송률과 사용자의 트래픽에 대한 비례 공평성(Proportional Fairness)을 함게 제공할 수 있다. 무선자원, 할당, 패킷 유입량.
Abstract:
PURPOSE: A scheduling method for offering a proportional fairness toward the traffic of a user for a mobile communications system is provided to implement high system transmission rate by allocating wireless resources. CONSTITUTION: A transmission standby queue(101) receives a packet for a UEs(User Equipments). The latency queue temporarily stores the received packets according to each user. A packet scheduler(100) receives wireless CQI(Channel Quality Information) which is necessary for the radio resource assignment from user terminals. The packet scheduler receives the packet inflow information per the unit time from the latency queue. The packet scheduler assigns radio resources to user terminals.
Abstract:
A mobile station (MS) estimates a location, transmits to a base station (BS) location information corresponding to the estimated location, and receives from the BS a neighboring cell measurement message including a cell search list for neighboring cells determined based on the location information. And, when the neighboring cell measurement message is received, the MS performs a cell search for neighboring cells included in the cell search list.
Abstract:
A terminal continues to compare the signal intensity of a serving base station and the signal intensity of a target base station and execute the handover to the target base station at the optimal point of the handover instead of executing the handover right upon receiving a handover command from the serving base station. When the point of handover is determined, the terminal transmits a message notifying the execution of the handover to the serving base station and then executes the handover to the target base station. [Reference numerals] (AA,CC) No; (BB,DD) Yes; (S10) Receive a handover command; (S20) Measure a signal intensity of a target base station; (S30) Determine a handover execution point based on the signal intensity; (S40) Handover execution point?; (S50) Transfer handover alarm messages to a serving base station; (S60) Reply message received?; (S70) Perform the handover
Abstract:
PURPOSE: A data transmitting method based on machine type group-based tunneling and a mobile communication system using the same are provided to reduce the loads of a system by efficiently implementing signaling processes. CONSTITUTION: A machine type communication(MTC) device in a MTC group transmits a connection request to a network. A mobile managing unit(220) transmits a session generation requesting message including MTC group identification(ID) and transmits an initial context setting requesting message including the MTC group ID to a base station. If the connection request form the MTC device is an initial connection request form the MTC group, the mobile managing unit transmits a bearer modification requesting message to a gateway.