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公开(公告)号：KR1020090065251A
公开(公告)日：2009-06-22
申请号：KR1020070132730
申请日：2007-12-17
Applicant: 한국전자통신연구원
CPC classification number: H04W28/22 , H04L1/0014 , H04W28/02 , H04W88/181 , H04W88/02
Abstract: A codec bit rate control method for guaranteeing QoS of voice in a wireless LAN VoIP system is provided to adjust the amount of voice data through a variable bit rate characteristic of G.729.1 in a channel deterioration situation of a wireless LAN, thereby guaranteeing QoS of voice. An AP(Access Point) collects channel state information to grasp channel occupation time of terminals connected to the AP(S230). Each terminal adjusts a codec bit rate based on a channel occupation rate of the terminals about total channel capacity(S255,S260). The adjusted codec bit rate is transmitted.
Abstract translation: 提供了一种用于保证无线LAN VoIP系统中的语音QoS的编解码比特率控制方法，用于在无线LAN的信道恶化情况下通过G.729.1的可变比特率特性来调整语音数据量，从而保证 语音。 AP（接入点）收集信道状态信息以掌握连接到AP的终端的信道占用时间（S230）。 每个终端基于终端关于总信道容量的信道占用率来调整编解码器比特率（S255，S260）。 发送调整后的编解码器比特率。
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公开(公告)号：KR1020080050960A
公开(公告)日：2008-06-10
申请号：KR1020070067187
申请日：2007-07-04
Applicant: 한국전자통신연구원
Abstract: A method and an apparatus for matching measurement interval of speech quality of variable band multi-codec are provided to match a measurement interval between a reference sound and a codec sound and reduce a measurement result distortion phenomenon. A measurement interval setting unit(110) sets an interval of speech quality desired to be measured by time intervals, and the first conversion unit(120) converts the measurement interval by sample units. An information synthesizing unit(130) synthesizes information about the measurement interval which has been converted by sample units and a digital original sound, and outputs the same.
Abstract translation: 提供了一种用于匹配可变频带多编解码器的语音质量的测量间隔的方法和装置，以使参考声音和编解码器声音之间的测量间隔相匹配，并减少测量结果失真现象。 测量间隔设定单元（110）通过时间间隔设定希望测量的语音质量的间隔，第一转换单元（120）通过采样单位转换测量间隔。 信息合成单元（130）合成关于由采样单元转换的测量间隔和数字原始声音的信息，并输出。
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公开(公告)号：KR1020070061317A
公开(公告)日：2007-06-13
申请号：KR1020060096598
申请日：2006-09-29
Applicant: 한국전자통신연구원
CPC classification number: H04W28/24 , H04W72/0406 , H04W72/0446
Abstract: A media access method in a wireless LAN environment is provided to improve QoS of a VoIP system by extracting a common voice frame generation period within the same BSS(Basic Service Set) when a voice frame is transmitted through a radio link in which terminals each having a different voice frame generation period coexist, and reducing a transmission delay and jitters without performing backoff and polling. Mobile terminals that have requested transmission of a voice frame and APs(Access Points) connected with the mobile terminals through a radio link exchange frames for guaranteeing QoS, in order to allocate its QoS slot to each mobile terminal. A unit time interval of the radio link for transmission of the voice frame is divided by time corresponding to the least common multiple of a generation period of the voice frame of each mobile terminal. The interval divided by the least common multiple is divided into QTX-INT(QoS Frame Transmission Interval). The QoS slot is allocated to the QTX-INT so that each mobile terminal transmits the voice frame through the QoS slot.
Abstract translation: 提供无线LAN环境中的媒体接入方法，以通过在通过无线电链路发送语音帧时提取同一BSS（基本业务集）内的公共语音帧生成周期来提高VoIP系统的QoS，其中， 不同的语音帧生成周期共存，并且减少传输延迟和抖动，而不执行退避和轮询。 已经请求传输语音帧的移动终端和通过无线电链路与移动终端连接的AP（接入点）交换帧以保证QoS，以便为每个移动终端分配其QoS时隙。 用于传输语音帧的无线电链路的单位时间间隔除以与每个移动终端的语音帧的生成周期的最小公倍数相对应的时间。 间隔除以最小公倍数分为QTX-INT（QoS帧传输间隔）。 QoS时隙被分配给QTX-INT，使得每个移动终端通过QoS时隙发送语音帧。
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公开(公告)号：KR100590772B1
公开(公告)日：2006-06-15
申请号：KR1020030097155
申请日：2003-12-26
Applicant: 한국전자통신연구원
CPC classification number: H04W72/1242 , H04W28/14 , H04W84/12
Abstract: 본 발명은 무선랜 구간에서 통신 품질을 보장하는 매체접속제어 장치 및 방법에 관한 것으로, 상기 매체접속제어 방법은 (a) 상위 계층으로부터 수신된 프레임으로부터 사용자 우선순위를 추출하고 AC(Access Category)별로 음성 프레임과 범용 프레임을 분리하여 저장하는 단계; (b) 상기 음성 프레임과 상기 범용 프레임에 대한 백오프를 독립적으로 수행하는 단계; (c) 상기 음성 프레임과 상기 범용 프레임에 대한 상기 백오프 동작이 동시에 종료되었는지 여부를 판별하는 단계; (d) 상기 (c) 단계에서의 판별 결과, 상기 백오프 동작이 동시에 종료되었으면 우선순위가 높은 상기 음성 프레임을 우선 송신하고 상기 범용 프레임에 대해서는 상기 백오프 동작을 수행하는 단계; 및 (e) 상기 (c) 단계에서의 판별 결과, 상기 백오프 동작이 동시에 종료되지 않았으면 상기 백오프 동작이 종료된 프레임을 송신하는 단계를 포함한다.
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公开(公告)号：KR100450416B1
公开(公告)日：2004-09-30
申请号：KR1020020073074
申请日：2002-11-22
Applicant: 한국전자통신연구원
IPC: H04L12/413
Abstract: PURPOSE: A frame pad inserting apparatus in a home PNA(Phone line Network Alliance)-based data communication network is provided to reduce complexity of an overall implementation circuit by inserting a fixed length of pad irrespective of a frame transmission speed. CONSTITUTION: An Ethernet frame length calculator(230) calculates a length of an Ethernet frame applied through a transmission frame input terminal(210). A pad insertion determining unit(240) determines whether to insert a pad based on the calculated frame length and transmission rate(BaudRate) inputted from a management access unit. A pad generator(250) outputs pad data with a fixed length in response to a pad request signal(ReqPaDat) inputted from a home PNA frame processor when pad insertion is determined.
Abstract translation: 目的：提供基于家庭PNA（电话线网络联盟）的数据通信网络中的帧填充插入装置，以通过插入固定长度的填充而不考虑帧传输速度来降低整个实现电路的复杂性。 构成：以太网帧长度计算器（230）计算通过传输帧输入终端（210）应用的以太网帧的长度。 衬垫插入确定单元（240）基于从管理访问单元输入的所计算的帧长度和传输速率（BaudRate）来确定是否插入衬垫。 响应于在确定垫插入时从家庭PNA帧处理器输入的垫请求信号（ReqPaDat），垫发生器（250）输出具有固定长度的垫数据。
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Patent Agency Ranking
公开(公告)号：KR100441887B1
公开(公告)日：2004-07-27
申请号：KR1020020025904
申请日：2002-05-10
Applicant: 한국전자통신연구원
Abstract: PURPOSE: An apparatus for processing frames in a home network system is provided to present a high-speed frame processor to meet the standards of a second generation home PNA system. CONSTITUTION: A terminal having a second home PNA function is comprised of an H2(Second Generation Home) PNA MAC(Media Access Control)(20), a frame processor(10), and an H2 management part(30). The frame processor(10), connected to an IEEE 802.3 MAC(50) through an MII(Media Independent Interface)(100), transmits and receives Ethernet frames. The frame processor(10) receives time slot information necessary to transmit a frame from the H2 MAC(20). Also the frame processor(10) receives various parameters, such as a PE(Payload Encoding rate), a PRI(Priority), an SI(Scrambler Initialization seed), etc., necessary for frame transmission from the H2 management part(30).
Abstract translation: 目的：提供一种用于在家庭网络系统中处理帧的设备，以呈现高速帧处理器以满足第二代家庭PNA系统的标准。 构成：具有第二家庭PNA功能的终端包括H2（第二代家庭）PNA MAC（媒体访问控制）（20），帧处理器（10）和H2管理部分（30）。 通过MII（媒体独立接口）（100）连接到IEEE 802.3MAC（50）的帧处理器（10）发送和接收以太网帧。 帧处理器（10）接收从H2 MAC（20）发送帧所需的时隙信息。 此外，帧处理器（10）从H2管理部分（30）接收帧传输所需的诸如PE（有效负载编码率），PRI（优先级），SI（加扰器初始化种子）等各种参数， 。
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公开(公告)号：KR1020030087827A
公开(公告)日：2003-11-15
申请号：KR1020020025904
申请日：2002-05-10
Applicant: 한국전자통신연구원
CPC classification number: H04L12/2803 , H04L2012/2845 , H04M11/062
Abstract: PURPOSE: An apparatus for processing frames in a home network system is provided to present a high-speed frame processor to meet the standards of a second generation home PNA system. CONSTITUTION: A terminal having a second home PNA function is comprised of an H2(Second Generation Home) PNA MAC(Media Access Control)(20), a frame processor(10), and an H2 management part(30). The frame processor(10), connected to an IEEE 802.3 MAC(50) through an MII(Media Independent Interface)(100), transmits and receives Ethernet frames. The frame processor(10) receives time slot information necessary to transmit a frame from the H2 MAC(20). Also the frame processor(10) receives various parameters, such as a PE(Payload Encoding rate), a PRI(Priority), an SI(Scrambler Initialization seed), etc., necessary for frame transmission from the H2 management part(30).
Abstract translation: 目的：提供一种用于处理家庭网络系统中的帧的装置，用于呈现高速帧处理器以满足第二代家庭PNA系统的标准。 构成：具有第二归属PNA功能的终端由H2（第二代家庭）PNA MAC（媒体访问控制）（20），帧处理器（10）和H2管理部分（30）组成。 通过MII（媒体独立接口）（100）连接到IEEE 802.3 MAC（50）的帧处理器（10）发送和接收以太网帧。 帧处理器（10）从H2 MAC（20）接收发送帧所需的时隙信息。 此外，帧处理器（10）从H2管理部分（30）接收诸如PE（有效负载编码率），PRI（优先级），SI（加扰器初始化种子）等帧传输所需的各种参数， 。
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公开(公告)号：KR101695838B1
公开(公告)日：2017-01-12
申请号：KR1020130074677
申请日：2013-06-27
Applicant: 한국전자통신연구원
Abstract: 본발명은, 무선통신기반의 All-인터넷프로토콜(IP: Internet Protocol) 망에서멀티미디어서비스품질을향상시키기위해데이터패킷의손실을복구하여정상적으로데이터를송수신하는장치및 방법에관한것으로, 단말이접속하는망 시스템들의접속정보를수신하고, 상기접속정보를확인한후, 상기단말의상기망 시스템들로의접속에상응하여동적으로데이터패킷을생성하고, 상기데이터패킷을수신기로송신하며, 상기단말이제1시스템에접속할경우에는순차적으로연속적인시퀀스프레임들이포함된상기데이터패킷을생성하고, 상기단말이제2시스템에접속할경우에는상기시퀀스프레임들을포함하는메인(main) 프레임, 상기시퀀스프레임들이시퀀스지연된리던던시(redundancy) 프레임, 및상기메인프레임의배타적논리합(XOR: exclusive OR) 프레임이포함된상기데이터패킷을생성한다.
Abstract translation: 本发明涉及通过恢复数据分组的丢失来正常发送或接收数据的装置和方法，以提高基于无线通信的全网协议（IP）网络中的多媒体业务质量。 该设备接收终端接入的连接网络系统的接入信息; 在确认访问信息之后响应于终端对网络系统的访问来动态地生成数据分组; 将数据分组发送到接收机; 当终端连接到第一系统时，生成包括连续序列帧的数据分组; 并且当终端连接到第二系统时，生成包括包括序列帧的主帧，序列帧被延迟的冗余帧和主帧的异或（XOR）帧的数据分组。 （102）端子1; （122）航站楼2
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公开(公告)号：KR1020160062679A
公开(公告)日：2016-06-02
申请号：KR1020150145170
申请日：2015-10-19
Applicant: 한국전자통신연구원
Inventor： 구기종
Abstract: 본발명은영상회의를위한전용망이아닌일반공중인터넷망이나모바일환경에서발생할수 있는수준의패킷손실율에서도손실된패킷을복원할수 있고, 양방향서비스를제공하기위해실시간으로짧은시간에패킷손실의복구가가능하며, 에너지소비를줄일수 있도록패킷손실의복구가가능한영상회의시스템에서의데이터송수신장치및 방법에관한것이다.
Abstract translation: 本发明涉及一种远程呈现系统中的数据收发装置及其方法。 数据收发装置可以在移动环境中产生丢包率或者不是用于视频会议的私有网络的一般公共因特网网络来恢复丢失的分组，可以在短时间内实时恢复分组丢失 提供双向服务的时间，并且可以恢复丢包以减少能耗。 该方法包括依次发送恢复的分组和实时传输协议分组的步骤，以及连续接收恢复的分组和实时传输协议分组的步骤。
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