公开(公告)号：US20120213065A1

公开(公告)日：2012-08-23

申请号：US13458443

申请日：2012-04-27

申请人： Ki Jong KOO ,  Dae Hwan HWANG

发明人： Ki Jong KOO ,  Dae Hwan HWANG

IPC分类号： H04W28/06

CPC分类号： H04W72/1242 ,  H04W28/14 ,  H04W84/12

摘要： A media access control (MAC) apparatus and corresponding methods for guaranteeing quality-of-service in a wireless local area network (LAN) are presented. The MAC method includes extracting, performing, determining, a first transmitting step, and a second transmitting step. The extracting includes extracting a user priority from a frame received from an upper layer and separately storing a voice frame and a non-voice frame according to an access category (AC). The performing includes independently performing backoff operations for the voice frame and the non-voice frame. The determining includes determining whether the backoff operations for the voice frame and the non-voice frame have simultaneously ended. The first transmitting includes transmitting the voice frame having a higher priority first and performing the backoff operation for the non-voice frame if the backoff operations have simultaneously ended. The second transmitting includes transmitting a frame whose backoff operation ends if the backoff operations have not simultaneously ended.

摘要翻译： 提出了一种用于保证无线局域网（LAN）中的服务质量的媒体访问控制（MAC）装置和相应的方法。 MAC方法包括提取，执行，确定第一发送步骤和第二发送步骤。 提取包括从上层接收到的帧中提取用户优先级，并根据访问类别（AC）单独存储语音帧和非语音帧。 执行包括独立地执行语音帧和非语音帧的退避操作。 确定包括确定语音帧和非语音帧的后退操作是否已经同时结束。 第一发送包括首先发送具有较高优先级的语音帧，并且如果退避操作已经同时结束，则对非语音帧执行退避操作。 第二发送包括如果退避操作没有同时结束，则发送退避操作结束的帧。

公开(公告)号：US07907523B2

公开(公告)日：2011-03-15

申请号：US11930678

申请日：2007-10-31

申请人： Ki-Jong Koo ,  Dae-Ho Kim ,  Tae-Gyu Kang ,  Do Young Kim ,  Hae Won Jung

发明人： Ki-Jong Koo ,  Dae-Ho Kim ,  Tae-Gyu Kang ,  Do Young Kim ,  Hae Won Jung

IPC分类号： H04L12/26

CPC分类号： H04L47/801 ,  G10L19/24 ,  H04L43/0829 ,  H04L43/0852 ,  H04L47/70 ,  H04L47/822

摘要： A method and apparatus for controlling a variable bit-rate voice codec are provided. The method of controlling the variable bit-rate voice codec may include: extracting calling capability of terminals that request a new call to be made; extracting network parameters from existing calls in the network through an exchanged packet; measuring voice quality of the existing calls based on the extracted network parameters; and determining whether to permit a new call to be made based on the measured voice quality and the calling capability. Accordingly, it is possible to secure QoS of a voice service between terminals by adjusting a transmission rate of the variable bit-rate codec based on transmission capability of a network.

摘要翻译： 提供了一种用于控制可变比特率语音编解码器的方法和装置。 控制可变比特率语音编解码器的方法可以包括：提取请求新呼叫的终端的呼叫能力; 通过交换的分组从网络中的现有呼叫提取网络参数; 基于所提取的网络参数来测量现有呼叫的语音质量; 以及基于测量的语音质量和呼叫能力来确定是否允许进行新的呼叫。 因此，可以通过基于网络的传输能力调整可变比特率编解码器的传输速率来确保终端之间的语音服务的QoS。

公开(公告)号：US20090207825A1

公开(公告)日：2009-08-20

申请号：US12423938

申请日：2009-04-15

申请人： Ki Jong KOO ,  Dae Hwan HWANG

发明人： Ki Jong KOO ,  Dae Hwan HWANG

IPC分类号： H04W4/00

CPC分类号： H04W72/1242 ,  H04W28/14 ,  H04W84/12

摘要： A media access control (MAC) apparatus and corresponding methods for guaranteeing quality-of-service in a wireless local area network (LAN) are presented. The MAC method includes the steps of extracting, performing, determining, a first transmitting step, and a second transmitting step. The extracting step includes extracting a user priority from a frame received from an upper layer and separately storing a voice frame and a non-voice frame according to an access category (AC). The performing step includes independently performing backoff operations for the voice frame and the non-voice frame. The determining step includes determining whether the backoff operations for the voice frame and the non-voice frame have simultaneously ended. The first transmitting step includes transmitting the voice frame having a higher priority first and performing the backoff operation for the non-voice frame if the backoff operations have simultaneously ended. The second transmitting step includes transmitting a frame whose backoff operation ends if the backoff operations have not simultaneously ended.

摘要翻译： 提出了一种用于保证无线局域网（LAN）中的服务质量的媒体访问控制（MAC）装置和相应的方法。 MAC方法包括提取，执行，确定第一发送步骤和第二发送步骤的步骤。 提取步骤包括从上层接收的帧中提取用户优先级，并根据访问类别（AC）单独存储语音帧和非语音帧。 执行步骤包括独立地执行语音帧和非语音帧的退避操作。 确定步骤包括确定语音帧和非语音帧的后退操作是否已经同时结束。 第一发送步骤包括首先发送具有较高优先级的语音帧，并且如果退避操作已经同时结束，则对非语音帧执行退避操作。 第二发送步骤包括如果退避操作没有同时结束，则发送回退操作结束的帧。

公开(公告)号：US20090122804A1

公开(公告)日：2009-05-14

申请号：US12349867

申请日：2009-01-07

申请人： Ki Jong Koo ,  Dae Hwan Hwang

发明人： Ki Jong Koo ,  Dae Hwan Hwang

IPC分类号： H04L12/56

CPC分类号： H04W72/1242 ,  H04W28/14 ,  H04W84/12

摘要： A media access control (MAC) apparatus and corresponding methods for guaranteeing quality-of-service in a wireless local area network (LAN) are presented. The MAC method includes the steps of extracting, performing, determining, a first transmitting step, and a second transmitting step. The extracting step includes extracting a user priority from a frame received from an upper layer and separately storing a voice frame and a non-voice frame according to an access category (AC). The performing step includes independently performing backoff operations for the voice frame and the non-voice frame. The determining step includes determining whether the backoff operations for the voice frame and the non-voice frame have simultaneously ended. The first transmitting step includes transmitting the voice frame having a higher priority first and performing the backoff operation for the non-voice frame if the backoff operations have simultaneously ended. The second transmitting step includes transmitting a frame whose backoff operation ends if the backoff operations have not simultaneously ended.

公开(公告)号：US20080081648A1

公开(公告)日：2008-04-03

申请号：US11702275

申请日：2007-02-05

申请人： Tae Gyu Kang ,  Ki Jong Koo ,  Dae Ho Kim ,  Do Young Kim ,  Hae Won Jung

发明人： Tae Gyu Kang ,  Ki Jong Koo ,  Dae Ho Kim ,  Do Young Kim ,  Hae Won Jung

IPC分类号： H04B7/00

CPC分类号： H04M7/0072 ,  H04L65/1069 ,  H04L65/80

摘要： Provided is a method and apparatus for minimizing the number of transcodings between network devices in a multi-network multi-codec environment. The method includes: creating a received codec list by receiving a transmit codec comprised in a call setting message from a transmission device and the number of transcodings of the transmit codec, which has been performed from a codec of an initial transmission device; creating a codec Quality of Service (QoS) list containing total codecs of the multi-network and quality information of each of the total codecs; creating a transcodec list containing internally providable transcodecs and quality information of the transcodecs based on the codec QoS list; and creating an updated codec list by adding codecs of the transcodec list matching codecs of the received codec list to the received codec list and adjusting codec priority according to the number of transcodings. Accordingly, since the number of transcodings can be minimized, a quality decrease of original media can be minimized.

摘要翻译： 提供了一种用于最小化多网络多编解码器环境中的网络设备之间的转码次数的方法和装置。 该方法包括：通过从传输设备接收包括在呼叫设置消息中的传输编解码器和已经从初始传输设备的编解码器执行的传输编解码器的转码次数来创建接收的编解码器列表; 创建包含多网络的总编解码器和每个编解码器的质量信息的编解码器服务质量（QoS）列表; 基于编解码器QoS列表创建包含内容可提供的转录代码和转录代码的质量信息的转录列表; 以及通过将接收到的编解码器列表的编解码器匹配的转码器列表的编解码器添加到接收到的编解码器列表并根据转码数量来调整编解码器优先级来创建更新的编解码器列表。 因此，由于能够最小化转码次数，因此可以使原始媒体的质量下降最小化。

公开(公告)号：US08369350B2

公开(公告)日：2013-02-05

申请号：US12556051

申请日：2009-09-09

申请人： Ki Jong Koo ,  Hyun Joo Bae ,  Byung Sun Lee

发明人： Ki Jong Koo ,  Hyun Joo Bae ,  Byung Sun Lee

IPC分类号： H04L12/54

CPC分类号： H04W72/1221 ,  H04W72/1242 ,  H04W74/0816

摘要： The transmission delay of a voice frame can be reduced by performing internal collision resolution and frame aggregation according to the presence or absence of a voice frame awaiting transmission in a MAC layer, thereby reducing an end-to-end voice transmission delay time for a VoIP service.

摘要翻译： 可以通过根据在MAC层中等待传输的语音帧的存在或不存在来执行内部冲突解决和帧聚合来减少语音帧的传输延迟，从而减少VoIP的端到端语音传输延迟时间 服务。

公开(公告)号：US07508802B2

公开(公告)日：2009-03-24

申请号：US11128936

申请日：2005-05-12

申请人： Ki Jong Koo

发明人： Ki Jong Koo

IPC分类号： H04W4/00 ,  H04W72/00 ,  H04B7/212 ,  H04L12/413 ,  H04J3/16 ,  H04J3/24 ,  H04J14/08

CPC分类号： H04W74/00 ,  H04W28/24 ,  H04W72/1236 ,  H04W80/00 ,  H04W84/12

摘要： The present invention provides a method of controlling Wireless LAN (WLAN) medium access using Pseudo-Time Division Multiplexing (PTDM) to improve the Quality of Service (QoS) of the WLAN. The method includes the first step of a Mobile Terminal (MT) acquiring QoS information, which relates to a voice frame to be transmitted, from an upper layer; the second step of the MT exchanging a frame, including the QoS information, with the AP and being allocated QoS slot (QSLOT) information by the AP; the third step of dividing an RF link section between the MT and the AP by the creation period of the voice frame; and the fourth step of transmitting the voice frame in the creation period of the voice frame using the allocated QSLOT information.

摘要翻译： 本发明提供一种使用伪时分复用（PTDM）来控制无线LAN（WLAN）媒体接入以提高WLAN的服务质量（QoS）的方法。 该方法包括：移动终端（MT）从上层获取涉及要发送的语音帧的QoS信息的第一步骤; MT的第二步，包括QoS信息，与AP并由AP分配QoS时隙（QSLOT）信息; 通过语音帧的创建周期将MT和AP之间的RF链路部分划分的第三步骤; 以及使用分配的QSLOT信息在语音帧的创建周期中发送语音帧的第四步骤。

公开(公告)号：US20080130511A1

公开(公告)日：2008-06-05

申请号：US11930678

申请日：2007-10-31

申请人： Ki-Jong Koo ,  Dae-Ho Kim ,  Tae-Gyu Kang ,  Do Young Kim ,  Hae Won Jung

发明人： Ki-Jong Koo ,  Dae-Ho Kim ,  Tae-Gyu Kang ,  Do Young Kim ,  Hae Won Jung

IPC分类号： G06F11/30

CPC分类号： H04L47/801 ,  G10L19/24 ,  H04L43/0829 ,  H04L43/0852 ,  H04L47/70 ,  H04L47/822

摘要： A method and apparatus for controlling a variable bit-rate voice codec are provided. The method of controlling the variable bit-rate voice codec may include: extracting calling capability of terminals that request a new call to be made; extracting network parameters from existing calls in the network through an exchanged packet; measuring voice quality of the existing calls based on the extracted network parameters; and determining whether to permit a new call to be made based on the measured voice quality and the calling capability. Accordingly, it is possible to secure QoS of a voice service between terminals by adjusting a transmission rate of the variable bit-rate codec based on transmission capability of a network.

摘要翻译： 提供了一种用于控制可变比特率语音编解码器的方法和装置。 控制可变比特率语音编解码器的方法可以包括：提取请求新呼叫的终端的呼叫能力; 通过交换的分组从网络中的现有呼叫提取网络参数; 基于提取的网络参数测量现有呼叫的语音质量; 以及基于测量的语音质量和呼叫能力来确定是否允许进行新的呼叫。 因此，可以通过基于网络的传输能力调整可变比特率编解码器的传输速率来确保终端之间的语音服务的QoS。

公开(公告)号：US08117029B2

公开(公告)日：2012-02-14

申请号：US11928557

申请日：2007-10-30

申请人： Dae-Ho Kim ,  Tae-Gyu Kang ,  Ki-Jong Koo ,  Do Young Kim ,  Hae Won Jung

发明人： Dae-Ho Kim ,  Tae-Gyu Kang ,  Ki-Jong Koo ,  Do Young Kim ,  Hae Won Jung

IPC分类号： G10L21/00

CPC分类号： G10L25/69 ,  G10L19/18

摘要： Provided is a transmission apparatus for matching sound quality measurement sections of a variable bandwidth multi-codec. The apparatus includes a measurement section setting unit setting a measurement section, which is to be measured for sound quality, in units of time; a first conversion unit converting the measurement section into a measurement section in units of samples; and an information synthesis unit synthesizing information regarding the measurement section in units of samples with a digital original sound and outputting the synthesis result. In addition, provided is a method of matching a measurement section of a reference sound, based on which the end-to-end sound quality measurement of the variable bandwidth multi-codec is performed, and a measurement section of a sound produced by the variable bandwidth multi-codec in a real-time Internet multimedia service. Therefore, distortion of measurement results due to un-matching measurement sections can be reduced.

摘要翻译： 提供了一种用于匹配可变带宽多编解码器的音质测量部分的发送装置。 该装置包括以时间为单位设置要测量声音质量的测量部分的测量部分设置单元; 第一转换单元，以样本为单位将测量部转换为测量部; 以及信息合成单元，以具有数字原始声音的样本为单位合成关于测量部分的信息，并输出合成结果。 此外，提供了一种将参考声音的测量部分与可变带宽多编解码器的端对端音质测量进行匹配的方法以及由变量产生的声音的测量部分 带宽多编解码器在实时互联网多媒体服务。 因此，可以减少由于不匹配的测量部分引起的测量结果的失真。

公开(公告)号：US07986634B2

公开(公告)日：2011-07-26

申请号：US11857539

申请日：2007-09-19

申请人： Tae-Gyu Kang ,  Ki-Jong Koo ,  Dae-Ho Kim ,  Do Young Kim ,  Hae Won Jung

发明人： Tae-Gyu Kang ,  Ki-Jong Koo ,  Dae-Ho Kim ,  Do Young Kim ,  Hae Won Jung

IPC分类号： H04L12/26

CPC分类号： G10L25/69 ,  G10L19/24

摘要： Provided are a method and apparatus for measuring sound quality in a variable band multi-codec. The sound quality measurement apparatus includes: a recording file receiving/generating unit receiving a first recording file in which a natural sound is recorded, and a second recording file obtained by converting the natural sound into digital data using the variable band multi-codec, receiving information obtained by encoding the natural sound using the variable band multi-codec, in the format of a Real Time Protocol (RTP) packet, unpacking the RTP packet, decoding the RTP packet using the variable band multi-codec, and generating a third recording file; a Mean Opinion Score (MOS) value calculating unit repeatedly selecting a file from among the first recording file, the second recording file, and the third recording file, or selecting two files from among the first recording file, the second recording file, and the third recording file, and calculating a MOS value by obtaining a difference between the selected results; and a MOS value comparison unit comparing a plurality of MOS values generated by the MOS value calculating unit, with each other, and detecting a cause of sound quality deterioration.

摘要翻译： 提供了一种用于测量可变频带多编解码器中的声音质量的方法和装置。 声音测量装置包括：记录文件接收/生​​成单元，接收其中记录有自然声音的第一记录文件;以及第二记录文件，其通过使用可变频带多编解码器将自然声音转换为数字数据而获得，第二记录文件接收 使用可变频带多编解码器以实时协议（RTP）分组的格式编码自然声音获得的信息，解包RTP分组，使用可变频带多编解码器解码RTP分组，以及生成第三记录 文件; 平均意见得分（MOS）值计算单元，重复从第一记录文件，第二记录文件和第三记录文件中选择文件，或者从第一记录文件，第二记录文件和第二记录文件中选择两个文件 第三记录文件，并且通过获得所选择的结果之间的差来计算MOS值; 以及MOS值比较单元，将由MOS值计算单元生成的多个MOS值彼此进行比较，并且检测出音质劣化的原因。