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公开(公告)号：KR101345137B1
公开(公告)日：2013-12-26
申请号：KR1020070084129
申请日：2007-08-21
Applicant: 삼성전자주식회사 , 재단법인서울대학교산학협력재단
Abstract: 또한, 각시스템에보다적절한스케줄링알고리즘을선택하여적용함으로써, 보다효율적인업링크리소스할당이가능하여, VoIP(Voice over Internet Protocol)에서의통신에보다효율적인환경을제공할수 있다.
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公开(公告)号：KR101002883B1
公开(公告)日：2010-12-21
申请号：KR1020030075195
申请日：2003-10-27
Applicant: 삼성전자주식회사 , 재단법인서울대학교산학협력재단
IPC: H04B7/26
CPC classification number: H04W52/286 , H04W52/367 , H04W52/50
Abstract: 본 발명은 프레임을 통해 송신되는 데이터의 전송 레이트와 길이 정보를 적어도 포함하는 헤더 필드와, 상기 데이터를 포함하는 데이터 필드로 이루어진 프레임 구조를 가지는 무선 통신 시스템에서, 송신 단말기의 최대 송신 전력으로 상기 헤더 필드를 수신 단말기로 송신하여 상기 무선 통신 시스템에 존재하는, 상기 송신 단말기 및 수신 단말기 이외의 다른 단말기들이 상기 무선 통신 시스템의 자원이 사용되고 있음을 식별할 수 있도록 제어하고, 상기 헤더 필드를 송신한 후 상기 데이터 필드를 상기 수신 단말기에 도달할 수 있을 정도의 최적 송신 전력으로 송신한다.
송신 전력 제어, PLCP 프리앰블, PLCP 헤더, 최대 송신 전력, 자원 사용-
公开(公告)号：KR1020090019584A
公开(公告)日：2009-02-25
申请号：KR1020070084129
申请日：2007-08-21
Applicant: 삼성전자주식회사 , 재단법인서울대학교산학협력재단
CPC classification number: H04W74/004 , H04W72/1284 , H04W74/0866 , H04W88/08
Abstract: An uplink resource allocation method is provided to transmit an uplink packet by allocating an uplink duration of a PSMP framework every specific period, thereby effectively uplinking a plurality of stations without wasted duration. It is determined whether a packet exists in a service interval of a station(S710). When the uplink packet does not exist, data about the amount of an uplink packet is received from the station(S720). And the uplink is allocated to the service interval every specific period to provided the uplink packet correspondingly to the received data(S740). When it is necessary to provide the uplink packet, the station provides the uplink packet through the uplink allocated to the service interval(S750,S760).
Abstract translation: 提供上行链路资源分配方法，通过在每个特定时段分配PSMP框架的上行链路持续时间来发送上行链路分组，从而有效地上行多个站而不浪费持续时间。 确定在站的服务间隔中是否存在分组（S710）。 当不存在上行链路分组时，从站接收关于上行链路分组的量的数据（S720）。 并且每个特定周期将上行链路分配给服务间隔，以对应于所接收的数据提供上行链路分组（S740）。 当需要提供上行链路分组时，站通过分配给服务间隔的上行链路提供上行链路分组（S750，S760）。
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公开(公告)号：KR1020090019417A
公开(公告)日：2009-02-25
申请号：KR1020070083823
申请日：2007-08-21
Applicant: 삼성전자주식회사 , 재단법인서울대학교산학협력재단
CPC classification number: H04L1/0003 , H04B7/01 , H04L1/0009
Abstract: A method of adapting a link and a system thereof are provided to determine an offset value compensating for SNR according to whether an ACK message is received from a destination node, thereby selecting an optimum MCS level for a radio link. A link adaptation system comprises an SNR prediction unit(210), an offset value determination unit(220), an SNR compensation unit(230) and an MCS(Modulation Coding Scheme) level determination unit(240). The SNR prediction unit predicts SNR(Signal to Noise Ratio) of a signal transmitted through a link formed between a source node and destination node. The offset value determination unit determines an offset value according to whether an ACK(Acknowledgement) message is received from the destination node. The SNR compensation unit compensates for the predicted SNR based on the determined offset value.
Abstract translation: 提供一种适配链路及其系统的方法，以根据从目的地节点接收到ACK消息来确定补偿SNR的偏移值，从而为无线电链路选择最佳MCS级别。 链路适配系统包括SNR预测单元（210），偏移值确定单元（220），SNR补偿单元（230）和MCS（调制编码方案）级别确定单元（240）。 SNR预测单元预测通过源节点和目的地节点之间形成的链路发送的信号的SNR（信噪比）。 偏移值确定单元根据从目的地节点接收到ACK（确认）消息来确定偏移值。 SNR补偿单元基于确定的偏移值补偿预测的SNR。
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公开(公告)号：KR1020070073565A
公开(公告)日：2007-07-10
申请号：KR1020060051070
申请日：2006-06-07
Applicant: 삼성전자주식회사 , 재단법인서울대학교산학협력재단
CPC classification number: H04L1/1614 , H04L1/1685 , H04W28/06
Abstract: A method for transmitting aggregated MAC(Medium Access Control) MPDUs(MAC Packet Data Unit) in a WLAN(Wireless Local Area Network) system and a system therefor are provided to expand a wireless service area to transmit service data in the same power by aggregating a plurality of MAC frames to one transmission frame and transmitting the transmission frame. A method for transmitting aggregated MAC MPDUs in a WLAN system to transmit service data includes the steps of: dividing the service data transmitted from an upper layer into a plurality of MAC MPDUs(512,514,516); forming one transmission frame including the plurality of MPDUs, border information, and ACK(Acknowledged) request information; and adding one physical header to the transmission frame, and transmitting the added frame to a receiving side. The plurality of MPDUs is sequentially arranged. The border information discriminates each of the MPDUs. The ACK request information requests a received result of the MPDUs.
Abstract translation: 提供了一种用于在WLAN（无线局域网）系统及其系统中发送聚合MAC（媒体访问控制）MPDU（MAC分组数据单元）的方法，以扩展无线服务区域，以通过聚合来传送相同功率的服务数据 多个MAC帧到一个传输帧并发送传输帧。 一种用于在WLAN系统中发送聚合MAC MPDU以发送业务数据的方法包括以下步骤：将从上层发送的业务数据划分成多个MAC MPDU（512,514,516）; 形成包括所述多个MPDU，边界信息和ACK（已确认）请求信息的一个传输帧; 并向发送帧添加一个物理报头，并将添加的帧发送到接收侧。 多个MPDU顺序排列。 边界信息区分每个MPDU。 ACK请求信息请求接收到的MPDU的结果。
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Patent Agency Ranking
公开(公告)号：KR1020070048584A
公开(公告)日：2007-05-09
申请号：KR1020060055055
申请日：2006-06-19
Applicant: 삼성전자주식회사 , 재단법인서울대학교산학협력재단
CPC classification number: H04L12/12 , H04W4/06 , H04W36/00 , H04W52/0216 , H04W52/287 , H04W68/00 , H04W84/12 , H04W88/08 , Y02D70/142 , Y02D70/23 , Y02D70/00
Abstract: The present invention relates to a power saving in a wireless local area network including a plurality of access points providing at least one mobile station in each access point cell boundary with access service, the mobile station transits between an active mode and an idle mode. The power saving method includes grouping the access points into at least one paging group with a paging group boundary; determining if the a mobile station is in the idle mode in which the mobile station switches between an awake state and a doze state every predetermined time interval, or the active mode in which the mobile station is in the awake mode; and if the mobile station is in the idle mode enabling an idle handoff which occurs only when the mobile station crosses the paging group boundary. In the present invention, the handoff occurs when the mobile terminal crosses the paging group boundary but not the access point cell in the idle mode, resulting in reduction of power consumption.
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公开(公告)号：KR100678223B1
公开(公告)日：2007-02-01
申请号：KR1020030015735
申请日：2003-03-13
Applicant: 재단법인서울대학교산학협력재단 , 삼성전자주식회사
IPC: H04W28/18 , H04L12/891
CPC classification number: H04L47/10 , H04L47/14 , H04L47/15 , H04L47/24 , H04L47/36 , H04L47/41 , H04W28/22 , H04W28/24
Abstract: 통신시스템의 패킷 전송 방법 및 장치에 대해 개시한다.
본 발명에 따른 패킷 전송 방법은 상위 계층으로부터 서비스 품질에 대한 정보와 데이터율 정보를 제공받는 과정과, 하위 계층으로부터 무선단말들의 채널 상태 정보를 제공받는 과정과, 상기 제공받은 정보들에 따라 집합패킷을 생성하여 매체접근제어 계층으로 전송하는 과정을 포함한다.
Aggregation, 오버헤드, MAC-
公开(公告)号：KR1020060013607A
公开(公告)日：2006-02-13
申请号：KR1020040062252
申请日：2004-08-07
Applicant: 삼성전자주식회사 , 재단법인서울대학교산학협력재단
IPC: H04L12/891 , H04W28/06
CPC classification number: H04L69/04 , H04W28/06 , H04W28/065
Abstract: In the data transmission method, a MAC layer receives data from an upper layer, classifies the data according to destination addresses and traffic identifiers, aggregates the data by destination address and traffic identifier as a first transmission unit, aggregates the first transmission units having the identical destination address as a second transmission unit, and transmits the second transmission units having different destination addresses in a single frame. The data transmission method allows packets transferred from the upper layer to be hierarchically aggregated by DAs and TIDs and then packaged into a data unit for each destination such that it is possible to transmit the data at an optimal data rate for each destination terminal.
Abstract translation: 在数据传输方法中，MAC层接收来自上层的数据，根据目的地地址和业务标识符对数据进行分类，按照目的地地址和业务标识符将数据聚合为第一传输单元，聚集具有相同的第一传输单元 目的地址作为第二传输单元，并且在单个帧中传输具有不同目的地址的第二传输单元。 数据传输方法允许从上层传输的分组由DA和TID分层聚合，然后打包成每个目的地的数据单元，使得可以以每个目的地终端的最优数据速率传输数据。
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公开(公告)号：KR100506253B1
公开(公告)日：2005-08-10
申请号：KR1020030033460
申请日：2003-05-26
Applicant: 재단법인서울대학교산학협력재단 , 삼성전자주식회사
IPC: H04L12/861
CPC classification number: H04L69/04 , H04L49/90 , H04L49/9094
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.
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公开(公告)号：KR1020040101746A
公开(公告)日：2004-12-03
申请号：KR1020030033460
申请日：2003-05-26
Applicant: 재단법인서울대학교산학협력재단 , 삼성전자주식회사
IPC: H04L12/861
CPC classification number: H04L69/04 , H04L49/90 , H04L49/9094
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).
Abstract translation: 目的：提供一种用于最小化数据通信系统中的传输延迟的装置和方法，用于通过临时存储要发送到备份队列中的发送缓冲器的分组数据来防止分组数据的传输延迟，直接在备份队列中发送分组数据 发送缓冲器处于空闲状态，并且在发送缓冲器处于忙状态的情况下聚合和发送新接收的分组数据和先前接收的分组数据。 构成：用于聚合的传输模块由传输管理部分（110）和传输协议引擎部分（120）组成。 发送管理部（110）覆盖发送数据的管理和协议头的预处理。 传输协议引擎部分（120）根据传输协议发送实际的分组数据。 发送管理部（110）由发送队列（111）和帧处理部（113）构成。 发送队列（111）存储用于数据管理的数据。 帧处理器（113）聚合存储在发送队列（111）中的分组数据。 另外，发送管理部（110）具有临时存储要发送到发送协议引擎部（120）的分组数据的备用队列（112）。
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