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公开(公告)号：KR101801565B1
公开(公告)日：2017-11-27
申请号：KR1020120067560
申请日：2012-06-22
Applicant: 한국전자통신연구원
Abstract: 본발명은, 무선통신기반의 All-인터넷프로토콜(IP: Internet Protocol) 망에서멀티미디어서비스품질을향상시키기위해데이터패킷의손실을복구하여정상적으로데이터를송수신하는장치및 방법에관한것으로, 수신기로부터상기수신기에서의데이터패킷의수신정보를수신하는단계; 상기수신정보를고려하여, 상기수신기로송신할데이터가포함된복수의프레임들을생성한후, 상기복수의프레임들을페이로드(payload)에포함시켜, 헤더(header)와상기페이로드를포함하는데이터패킷을생성하는단계; 및상기생성된데이터패킷을상기수신기로송신하는단계;를포함하며; 상기페이로드는, 상기복수의프레임들에대한정보를포함하는모드필드(mode field) 및상기복수의프레임들을포함하며; 상기모드필드는, 상기수신정보및 상기복수의프레임들의개수를지시하는정보를포함한다.
Abstract translation: 本发明涉及用于通过恢复数据分组的丢失来正常发送/接收数据的设备和方法，以便在基于无线通信的全互联网协议（IP）网络中提高多媒体服务质量， 接收数据包中数据包的接收信息; 该方法包括：考虑包括有效载荷中的多个帧的接收信息，生成包括要发送到接收器的数据的多个帧，并且发送包括报头和有效载荷的数据 生成一个数据包; 并将生成的数据包发送给接收器; 所述有效载荷包括模式字段，所述模式字段包括关于所述多个帧和所述多个帧的信息; 模式字段包括指示接收信息和多个帧的数量的信息。
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公开(公告)号：KR1020170075127A
公开(公告)日：2017-07-03
申请号：KR1020150184147
申请日：2015-12-22
Applicant: 한국전자통신연구원
Abstract: 본발명은영상처리에관한것으로, 상세하게는, 인터넷에서패킷손실이발생하는경우에도영상회의와같은미디어통신서비스품질을유지할수 있는경량화된데이터복구기술에관한것이다. 본발명의일 실시예에따르면, 제1 시드값을이용하여 K x L 요소로구성된 LT(Luby Transform) 행렬을생성하는단계-여기서, 소정의확률에따라상기 K x L 요소중 적어도일부가 1임-, 제2 시드값을이용하여 H x K 요소로구성된 HDPC(High Density Parity Check) 행렬을생성하는단계, H x H 요소로구성된단위행렬을생성하는단계및 상기 LT 행렬, 상기 HDPC 행렬, 및상기단위행렬을결합하여결합행렬을생성하는단계를포함하는패킷손실복구처리를위한경량화된채널코딩방법이제공된다.
Abstract translation: 本发明涉及图像处理，更具体地说，涉及即使在因特网上发生分组丢失时也能够保持诸如视频会议等媒体通信服务的质量的轻量级数据恢复技术。 根据本发明的实施例，提供了一种使用第一种子值生成由K×L个元素组成的Luby变换（LT）矩阵的方法，其中至少一些K×L个元素 使用第二种子值生成由H×K个元素组成的HDPC（高密度奇偶校验）矩阵，生成由H×H个元素组成的单位矩阵，并生成LT矩阵，HDPC矩阵， 并结合酉矩阵生成组合矩阵，提供了用于丢包恢复处理的加权信道编码方法。
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公开(公告)号：KR1020130047642A
公开(公告)日：2013-05-08
申请号：KR1020120120357
申请日：2012-10-29
Applicant: 한국전자통신연구원
Inventor： 구기종
IPC: H04L1/00 , H04L12/801
CPC classification number: H04W24/00 , H04L1/0009 , H04L1/0031 , H04L47/127 , H04W28/0284 , H04W28/065
Abstract: PURPOSE: Data transception device and method in a communication system are provided to improve multimedia service quality by transceiving multimedia data at high speed and normal speed. CONSTITUTION: A packet decoder(730) receives loss information about a data packet and congestion information of a channel from a terminal receiving a data packet through a channel. A frame assembler(740) confirms a congestion situation estimation value from the congestion information and performs frame aggregation of data transmitted to a terminal corresponding to the congestion situation estimation value. A redundancy controller(750) confirms the data packet loss estimation value from the loss information and generates redundancy data of the data corresponding to the data packet loss estimation value. A packetizer(760) transmits the data packet incorporating the frame aggregated data and redundancy data.
Abstract translation: 目的：提供通信系统中的数据传输设备和方法，通过以高速和正常速度收发多媒体数据来提高多媒体业务质量。 构成：分组解码器（730）从通过信道接收数据分组的终端接收关于数据分组的丢失信息和信道的拥塞信息。 帧装配器（740）根据拥塞信息确认拥塞情况估计值，并且对与发送到终端的拥塞状况估计值对应的数据进行帧聚合。 冗余控制器（750）根据损失信息确认数据分组丢失估计值，并生成与数据分组丢失估计值对应的数据的冗余数据。 分组器（760）发送包含帧聚合数据和冗余数据的数据分组。
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公开(公告)号：KR1020110128147A
公开(公告)日：2011-11-28
申请号：KR1020110047211
申请日：2011-05-19
Applicant: 한국전자통신연구원
Abstract: PURPOSE: An AP, a terminal and a method thereof performing an AP access control and considering the complexity of transmission channel are provided to select an AP by enabling a user to utilize the complexity information of the transmission channel expressing that the traffic load level of an AP and the signal strength information which is received from an AP. CONSTITUTION: A measuring unit(101) measures the complexity of a transmission channel expressing the collision complexity between frame in a busy channel interval. A broadcasting unit(103) broadcasts the complexity of the transmission channel to a terminal which is included in the service range of the AP by including the complexity of the transmission channel to the beacon frame. The measuring unit measures an agreement rate of an idle time and the busy time as the complexity of the transmission channel.
Abstract translation: 目的：提供一种执行AP接入控制并考虑传输信道复杂度的AP，终端及其方法，通过使用户能够利用传输信道的复杂度信息来选择AP，该复杂度信息表示传输信道的业务负载水平 AP和从AP接收的信号强度信息。 规定：测量单元（101）测量表示在忙信道间隔中的帧之间的冲突复杂度的传输信道的复杂度。 广播单元（103）通过将传输信道的复杂度包括在信标帧中，将传输信道的复杂度广播到包括在AP的服务范围内的终端。 测量单元测量空闲时间和繁忙时间的一致率作为传输信道的复杂度。
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公开(公告)号：KR1020080037762A
公开(公告)日：2008-05-02
申请号：KR1020060104789
申请日：2006-10-27
Applicant: 한국전자통신연구원
Abstract: An apparatus and a method for measuring speech quality by using a variable bandwidth multi-codec are provided to perform end-to-end speech quality measurement more accurately and recognize a speech quality deterioration cause such as the distortion of a natural sound, thereby dealing with the deterioration of speech quality properly. A recording file receiving/generating unit(310) receives a first recording file recording a natural sound and a second recording file, that the natural sound is converted into digital data by using a codec, receives encoding information that an natural sound is encoded by the codec as a RTP(Real Time Protocol) packet format, dismantles a RTP packet, decodes the RTP packet by the codec, and generates a third recording file. An MOS(Mean Opinion Score) value calculating unit(320) selects one of the first, second, and third recording files duplicately or selects two files of the three recording files, and calculates an MOS value as a degree of a difference between the selected recording files. An MOS value comparing unit compares the MOS values generated in the MOS value calculating unit to recognize the cause of a speech quality distortion.
Abstract translation: 提供了通过使用可变带宽多编解码器来测量语音质量的装置和方法，以更精确地执行端到端语音质量测量，并且识别诸如自然声音的失真之类的语音质量恶化原因，从而处理 语音质量恶化正常。 记录文件接收/生成单元（310）接收通过使用编解码器将自然声音转换为数字数据的自然声音和第二记录文件的第一记录文件，接收由自然声音编码的自然声音的编码信息 编解码器作为RTP（实时协议）分组格式，拆卸RTP分组，通过编解码器解码RTP分组，并生成第三记录文件。 MOS（平均意见分数）值计算单元（320）重复地选择第一，第二和第三记录文件中的一个或选择三个记录文件的两个文件，并且将MOS值计算为所选择的 录制文件。 MOS值比较单元比较在MOS值计算单元中产生的MOS值，以识别语音质量失真的原因。
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Patent Agency Ranking
公开(公告)号：KR100456460B1
公开(公告)日：2004-11-10
申请号：KR1020010081219
申请日：2001-12-19
Applicant: 한국전자통신연구원
IPC: H04M11/06
Abstract: PURPOSE: An apparatus for detecting an error of a frame header in a telephone line modem is provided to improve a frame process speed by extracting a header of a receiving frame and detecting an error of an HCS(Header Check Sequence) by a byte unit in a receiving terminal. CONSTITUTION: An HCS transmission calculation unit(200) calculates a CRC(Cyclic Redundancy Check) value from transmission input data, and provides the calculated CRC value to an HCS multiplying unit(300). The HCS multiplying unit(300) multiplies specific data by the CRC value provided from the HCS transmission calculation unit(200), and provides the multiplied value to the HCS transmission calculation unit(200) under the control of an HCS control unit(100). The HCS transmission calculation unit(200) calculates a CRC value by the output provided from the HCS multiplying unit(300), and outputs an HCS value.
Abstract translation: 目的：提供一种用于检测电话线调制解调器中的帧头的错误的设备，以通过提取接收帧的头部并且通过以字节为单位检测HCS（头校验序列）的错误来提高帧处理速度 一个接收终端。 构成：HCS传输计算单元（200）根据传输输入数据计算CRC（循环冗余校验）值，并将计算出的CRC值提供给HCS乘法单元（300）。 HCS乘法单元（300）将特定数据乘以从HCS发送计算单元（200）提供的CRC值，并且在HCS控制单元（100）的控制下将乘积值提供给HCS发送计算单元（200） 。 HCS发送计算单元（200）通过从HCS乘法单元（300）提供的输出来计算CRC值，并且输出HCS值。
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公开(公告)号：KR100450768B1
公开(公告)日：2004-10-01
申请号：KR1020020066101
申请日：2002-10-29
Applicant: 한국전자통신연구원
Inventor： 구기종
IPC: H04L12/413
Abstract: PURPOSE: An apparatus and a method for detecting collision in a home PNA(Phone-line Network Alliance) are provided to detect the collision between transmission frames by the entire header of the transmission frame in a home PNA-based data transmission system. CONSTITUTION: A transmission symbol buffer(120) stores header symbols of a transmission frame. A transmission symbol counter(100) counts the header symbols of the transmission frame, and stores the header symbols in regular sequence in the transmission symbol buffer(120). A reception symbol counter(110) counts header symbols of a reception frame. A frame comparing unit(130) reads the header symbol of the transmission frame having a count value same with a value counted by the reception symbol counter(110) from the transmission symbol buffer(120), and compares the read header symbol with the header symbol of the reception frame. If the header symbol of the transmission frame is different from the header symbol of the reception frame, the frame comparing unit(130) generates a collision signal.
Abstract translation: 目的：提供家庭PNA（电话线网络联盟）中用于检测冲突的设备和方法，以检测基于家庭基于PNA的数据传输系统中传输帧的整个报头之间的传输帧之间的冲突。 构成：传输符号缓冲器（120）存储传输帧的标题符号。 传输码元计数器（100）对传输帧的头标记进行计数，并且将标题码元以规则的顺序存储在传输码元缓冲器（120）中。 接收符号计数器（110）对接收帧的报头符号进行计数。 帧比较单元（130）从发送符号缓冲器（120）读取具有与由接收符号计数器（110）计数的值相同的计数值的发送帧的报头符号，并且将读取的报头符号与报头 接待框架的象征。 如果传输帧的首标符号不同于接收帧的首标符号，则帧比较单元（130）生成冲突信号。
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公开(公告)号：KR1020040046557A
公开(公告)日：2004-06-05
申请号：KR1020020074506
申请日：2002-11-27
Applicant: 한국전자통신연구원
IPC: H04L12/413
Abstract: PURPOSE: A device for detecting a pad in a home PNA(Phone-line Network Alliance)-based data transmission system and a device therefor are provided to detect whether a pad is inserted, thereby calculating an exact length of a transmission frame and securing a minimal length of the transmission frame. CONSTITUTION: A transmission speed extractor(110) extracts transmission speed information of a receiving frame. A frame buffer(120) stores the receiving frame according to transmission speed extracted by the transmission speed extractor(110). A pad length determiner(130) determines the most significant byte of the frame buffer(120) as a pad length when an EOF(End Of File) signal is active. A counter(140) generates an address for accessing data of the frame buffer(120). A pad detector(150) checks the data of the frame buffer(120) as much as the pad length, decides that a pad is inserted if a CRC16 detection signal is inactive, and activates a pad detection signal.
Abstract translation: 目的：提供一种用于检测家庭PNA（电话线网络联盟）的数据传输系统及其装置中的焊盘的装置，用于检测是否插入焊盘，从而计算传输帧的精确长度并确保 传输帧的最小长度。 构成：传输速度提取器（110）提取接收帧的传输速度信息。 帧缓冲器（120）根据由传输速度提取器（110）提取的传输速度存储接收帧。 当EOF（文件结束）信号有效时，焊盘长度确定器（130）将帧缓冲器（120）的最高有效字节确定为焊盘长度。 计数器（140）产生用于访问帧缓冲器（120）的数据的地址。 焊盘检测器（150）与缓冲器（120）的数据一样多地检查焊盘长度，如果CRC16检测信号无效，则确定焊盘被插入，并激活焊盘检测信号。
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公开(公告)号：KR1020100082703A
公开(公告)日：2010-07-19
申请号：KR1020090065044
申请日：2009-07-16
Applicant: 한국전자통신연구원
CPC classification number: H04W24/10 , G10L19/24 , H04L1/0014 , H04L1/0015 , H04L1/0017 , H04L5/0057 , H04L65/80 , H04W28/22 , H04W80/04 , H04W88/181
Abstract: PURPOSE: A codec mode control method of an integrated internet protocol network and a terminal thereof are provided to improve wireless channel quality, packet transmission quality, and multimedia service quality. CONSTITUTION: A variable codec control unit(200) includes a channel measurement management unit(220) and a QoS control unit(240). The channel measurement management unit measures the state of a wireless channel and transmission characteristics of a received packet. The QoS control unit measures multimedia QoS on the basis of wireless channel state information and packet transmission characteristics information received from the channel measurement management unit. The QoS control unit determines the codec mode of an owned or opponent terminal according to the measured QoS.
Abstract translation: 目的：提供一种综合网络协议网络及其终端的编解码方式控制方法，以提高无线信道质量，分组传输质量和多媒体业务质量。 构成：可变编解码控制单元（200）包括信道测量管理单元（220）和QoS控制单元（240）。 信道测量管理单元测量无线信道的状态和接收到的分组的传输特性。 QoS控制单元基于从信道测量管理单元接收的无线信道状态信息和分组传输特性信息来测量多媒体QoS。 QoS控制单元根据所测量的QoS来确定所属或对手终端的编解码模式。
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公开(公告)号：KR1020100073133A
公开(公告)日：2010-07-01
申请号：KR1020080131724
申请日：2008-12-22
Applicant: 한국전자통신연구원
CPC classification number: H04W72/1221 , H04W72/1242 , H04W74/0816
Abstract: PURPOSE: A method for transmitting and receiving a frame in wireless LAN is provided to reduce transmission delay of a voice frame by selectively performing frame coupling depending on the existence of transmission-waiting voice frame. CONSTITUTION: When IFS begins, CR FAD(Collision Resolution and Frame Aggregation Decision) confirms a transmission-waiting frame in all AC(Access Category) queues(310,320). In case the transmission waiting time of a voice frame is greater than that of other AC frames, frame coupling is executed(340,350). The voice frame is preferentially transmitted(360). After completion of the frame coupling, MAC(Medium Access Control) checks a channel condition(370). MAC transmits a frame if the frame transmission is possible(380).
Abstract translation: 目的：提供一种用于在无线LAN中发送和接收帧的方法，以通过根据传输等待语音帧的存在选择性地执行帧耦合来减少语音帧的传输延迟。 规定：当IFS开始时，CR FAD（冲突解决和帧聚合决策）确认所有AC（接入类别）队列中的传输等待帧（310,320）。 在语音帧的传输等待时间大于其他AC帧的传输等待时间的情况下，执行帧耦合（340,350）。 优先发送语音帧（360）。 在帧耦合完成之后，MAC（媒体访问控制）检查信道条件（370）。 如果可以进行帧传输，则MAC发送帧（380）。
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