Abstract:
통신방법및 장치가제공된다. 전송단말은하나이상의수신단말들에게패킷들을전송할수 있다. 수신단말은손실된패킷에대한추가적인요청을전송할지 여부를다른수신단말들의요청을감청한후 결정할수 있다. 전송단말은수신단말에대한추가적인요청에대해모두응답하지않고, 멀티캐스트를통해수신단말들에게전송된추가적인패킷들을고려하여응답여부를결정할수 있다.
Abstract:
액세스 포인트 및 복수 개의 단말들을 포함하는 네트워크에서 멀티캐스트 패킷의 재전송을 위한 액세스 포인트 및 단말의 통신 방법을 제안한다. 특히, 복수 개의 단말들 중 선정된 적어도 하나의 후보 단말을 이용하여 멀티캐스트 패킷(multicast packet)을 재전송하는 액세스 포인트의 통신 방법을 제공할 수 있다.
Abstract:
Disclosed are a relaying method and a relaying system to relay data using a plurality of relay nodes. The method comprises the steps of obtaining a first channel matrix related to a first-hop channel and a second channel matrix related to a second-hop channel; generating an effective interference channel matrix based on the first channel matrix and the second channel matrix; and calculating a null space vector of the effective interference channel matrix.
Abstract:
PURPOSE: A physical layer network coding-based scheduling method for bidirectional traffic and a device thereof are provided to configure a routing path in a way that physical layer network coding can be activated to the maximum, thereby enabling frequency resources to be used efficiently and simultaneously. CONSTITUTION: A configuration part (710) configures a routing path in a way that physical layer network coding can be performed in sessions passing through an arbitrary node. A request part (730) requests information required for scheduling bidirectional traffic-related sessions, which are formed for the physical layer network coding, from neighboring nodes of the arbitrary node. A scheduling part (750) schedules a session set to perform bidirectional traffic by using queue differentials of the sessions and transmission rate differentials of each link of the sessions, which are calculated by the information. [Reference numerals] (710) Configuration part; (730) Request part; (750) Scheduling part; (770) Calculating part; (790) Determination part
Abstract:
이동 기지국에서 전송 전력 제어 및 동적 주파수 선택 운용을 위한 방법에 있어서, 이동 기지국 주위의 네트워크 환경을 모델링하는 과정과 상기 모델링 결과를 기반으로 상기 이동 기지국에 가장 적합한 전송 전력 제어 및 동적 주파수 선택 운용 기법을 선택하는 과정을 포함하는 것으로 기존의 네트워크에 주는 영향을 최소화할 수 있는 이점이 있다.
Abstract:
PURPOSE: A method and a device for generating neighbor base station list using virtual coordinate in a wireless communication system are provided to recognize neighboring base station by generating a 2D virtual coordinate of one-hop base stations, correcting the 2D virtual coordinate of two-hop base stations, generating the neighboring base station list. CONSTITUTION: A central BS(Base Station) measures a signal size of neighboring base stations(203). The base station exchanges the measured signal strength information with the neighboring base stations(209). By using the measured signal size, the base station searches neighboring base stations having signal size over the reference value(215). By using the exchanged signal strength information, the base stations generated virtual coordinate about the search neighboring base stations on a 2D plane(227).