公开(公告)号：US08098660B2

公开(公告)日：2012-01-17

申请号：US11997130

申请日：2006-07-28

申请人： Eiichi Muramoto ,  Takahiro Yoneda ,  Kazunobu Konishi ,  Chih-chang Hsu

发明人： Eiichi Muramoto ,  Takahiro Yoneda ,  Kazunobu Konishi ,  Chih-chang Hsu

IPC分类号： H04L12/56

CPC分类号： H04W72/005 ,  H04L12/1827 ,  H04W28/06 ,  H04W76/20

摘要： To transmit multimedia data in such a manner that is adaptive to the transmission capability of a receiving apparatus and/or to the congestion state of a network. In a transmitting apparatus (100), a receiver capability estimating part (102) estimates, based on feedback information from a receiving apparatus (200), a useable band. A receiver classifying part (103) classifies, based on the useable band, the receiving apparatus. A receiver list rearranging part (105) rearranges, in order of transmission capability, a receiver list where classified receiving apparatuses are listed in classes. A packet generating part (106) generates a packet having the receiver list and transmits it at an appropriate transmission rate.

摘要翻译： 以适应于接收装置的传输能力和/或网络的拥塞状态的方式发送多媒体数据。 在发送装置（100）中，接收机能力估计部（102）基于来自接收装置（200）的反馈信息，估计可使用的频带。 接收机分类部（103）基于可用频带对接收装置进行分类。 接收机列表重排部分（105）以传输能力的顺序重新排列分类的接收设备在类中列出的接收机列表。 分组生成部（106）生成具有接收方列表的分组，并以适当的传输速度发送。

公开(公告)号：US20110170417A1

公开(公告)日：2011-07-14

申请号：US13119296

申请日：2009-08-11

申请人： Eiichi Muramoto ,  Takahiro Yoneda ,  Kazunobu Konishi

发明人： Eiichi Muramoto ,  Takahiro Yoneda ,  Kazunobu Konishi

IPC分类号： H04L12/26

CPC分类号： H04L47/10

摘要： A first communication terminal which communicates with a second communication terminal through a best effort network includes: a communication history storage unit in which a communication history is stored for each of the communication terminals; and a round-trip delay time calculation unit which calculates a round-trip delay time that occurs in a communication with the second communication terminal. The second communication terminal includes a target loss event rate calculation unit which calculates a target loss event rate that is to be set by the first communication terminal in a communication with the second communication terminal, based on a past transmission rate that is recorded in the communication history and has been realized in the communication with the second communication terminal, and on the round-trip delay time that occurs in the communication with the second communication terminal. The first communication terminal changes a transmission rate which is set at the present time to a target transmission rate which is calculated based on the target loss event rate and the round-trip delay time. According to the transmission rate control device, when it is determined that the bandwidth that is estimated to be available in a communication through the network is rapidly changed, the transmission rate can be changed to a target bit rate in a short time period.

摘要翻译： 通过尽力而为的网络与第二通信终端通信的第一通信终端包括：通信历史存储单元，其中为每个通信终端存储通信历史; 以及往返延迟时间计算单元，其计算与第二通信终端的通信中发生的往返延迟时间。 第二通信终端包括：目标丢失事件发生率计算部，其基于在通信中记录的过去的传输速率来计​​算与第二通信终端进行通信时由第一通信终端设定的目标丢失事件发生率 历史，并且在与第二通信终端的通信中以及在与第二通信终端的通信中发生的往返延迟时间已经实现。 第一通信终端将当前设定的传输速率改变为基于目标丢失事件率和往返延迟时间计算的目标传输速率。 根据传输速率控制装置，当确定通过网络的通信中估计可用的带宽快速改变时，可以在短时间段内将传输速率改变为目标比特率。

公开(公告)号：US07950053B2

公开(公告)日：2011-05-24

申请号：US11575310

申请日：2005-10-12

申请人： Eiichi Muramoto ,  Takahiro Yoneda

发明人： Eiichi Muramoto ,  Takahiro Yoneda

IPC分类号： H04L9/00

CPC分类号： H04L63/0236

摘要： It is made possible to appropriately execute packet filtering and unauthorized access detection in a situation in which mobile network communications are operated.A home agent 404A acquires IP address, port number, and media type obtained by call control of a call control proxy server 403A and sends them to a firewall 700. A packet filtering unit 400 of the firewall 700 performs packet filtering so as to allow the IP packet determined according to the IP address and port number pair to pass through. An unauthorized access monitor 701 takes out information of the corresponding media type out of the normal access determination condition previously defined for each media type, monitors a packet based on the normal access determination condition, and detects that access deviating from normal access is unauthorized access.

摘要翻译： 可以在操作移动网络通信的情况下适当地执行包过滤和未经授权的访问检测。 归属代理404A获取通过呼叫控制代理服务器403A的呼叫控制获得的IP地址，端口号和媒体类型，并将其发送到防火墙700.防火墙700的分组过滤单元400执行分组过滤，以便允许 IP包根据IP地址和端口号对确定通过。 未经授权的访问监视器701从先前为每种媒体类型定义的正常访问确定条件中取出相应媒体类型的信息，基于正常访问确定条件监视分组，并且检测到偏离正常访问的访问是未经授权的访问。

公开(公告)号：US20130142243A1

公开(公告)日：2013-06-06

申请号：US13816770

申请日：2012-06-13

申请人： Yuki Minoda ,  Eiichi Muramoto

发明人： Yuki Minoda ,  Eiichi Muramoto

IPC分类号： H04L7/00

CPC分类号： H04L7/0041 ,  H04L47/25 ,  H04L47/283 ,  H04N21/2402 ,  H04N21/26216 ,  H04N21/6373

摘要： A transmitting device can suppress degradation of the video quality and determine a proper transmission rate, and include a transmitting unit that transmits a communication packet to a receiving device, a receiving unit that receives a feedback packet, which is a response signal corresponding to the communication packet, from the receiving device, a detecting unit that detects a change of a reception interval of the feedback packet, and a transmission rate determining unit that decreases a transmission rate at which the transmitting unit transmits the communication packet in the case where the change of the reception interval is detected, and increases the transmission rate on the basis of an amount of change of a travelling speed of at least either the transmitting device or the receiving device before and after the decrease in the transmission rate.

摘要翻译： 发送装置可以抑制视频质量的劣化并确定适当的传输速率，并且包括向接收装置发送通信分组的发送单元，接收作为与通信对应的响应信号的反馈分组的接收单元 从所述接收装置接收检测所述反馈分组的接收间隔的变化的检测部，以及传送速度决定部，其使所述发送部发送所述通信分组的传输速度降低， 检测接收间隔，并且基于传输速率降低之前和之后的发送设备或接收设备中的至少任一个的行进速度的改变量来增加传输速率。

公开(公告)号：US08023509B2

公开(公告)日：2011-09-20

申请号：US12301598

申请日：2007-05-17

申请人： Kazunobu Konishi ,  Eiichi Muramoto ,  Takahiro Yoneda

发明人： Kazunobu Konishi ,  Eiichi Muramoto ,  Takahiro Yoneda

IPC分类号： H04L12/56

CPC分类号： H04L12/1868 ,  H04L1/1809 ,  H04L45/00 ,  H04L45/16 ,  H04L45/28 ,  H04L2001/0093 ,  H04L2001/0097

摘要： A multicast communication system in which a receiving node which has detected a packet loss can make a retransmission request without applying a high load to a transmitting node, all receiving nodes, and the band of the entire network. The transmitting node transmits an explicit multicast data packet including an address list including a plurality of destination addresses and a bitmap indicating whether the data packet has been delivered to the respective destination addresses, to a plurality of the receiving nodes. The receiving node which has detected the packet loss checks an address list and bitmap of another data packet received and selects a receiving node to which the another data packet has been delivered as a retransmission requester. The receiving node which has detected the packet loss creates a unicast retransmission request packet with the selected receiving node as the destination and transmits it to the selected receiving node.

摘要翻译： 一种组播通信系统，其中检测到分组丢失的接收节点可以在不向发送节点，所有接收节点和整个网络的频带施加高负载的情况下进行重传请求。 发送节点向多个接收节点发送包括包括多个目的地地址的地址列表和指示数据分组是否已经被递送到各个目的地地址的位图的显式多播数据分组。 已经检测到分组丢失的接收节点检查接收到的另一数据分组的地址列表和位图，并选择另一数据分组已经被传送到的接收节点作为重传请求者。 已经检测到分组丢失的接收节点与所选择的接收节点一起创建单播重传请求分组，并将其发送到所选择的接收节点。

公开(公告)号：US20110222431A1

公开(公告)日：2011-09-15

申请号：US13130771

申请日：2010-09-29

申请人： Nobuaki Oue ,  Ryutaro Ono ,  Eiichi Muramoto

发明人： Nobuaki Oue ,  Ryutaro Ono ,  Eiichi Muramoto

IPC分类号： H04L12/26

CPC分类号： H04L43/0852 ,  H04L43/0888

摘要： To provide a transmitting apparatus capable of accurately estimating an available bandwidth even in a high bandwidth in a network. The transmitting apparatus (11) includes: a timer (201) that generates a signal having a signal cycle of a predetermined unit time; a packet train generating unit (202) that generates probe packets each transmitted at the signal cycle, and generates, as at least one adjustment packet inserted between two of the probe packets, at least one adjustment packet the number of which corresponds to a measurement bandwidth; a transmitting unit (203) that transmits, at the signal cycle, each probe packet having transmission time information, and transmits the adjustment packet between when one of the two probe packets is transmitted and when the other one is transmitted; a receiving unit (207) which receives, from a receiving apparatus (12), return information obtainable based on a reception time of each probe packet; and a determining unit that determines the available bandwidth, using the received return information.

摘要翻译： 提供即使在网络中的高带宽中也能够准确估计可用带宽的发送装置。 发送装置（11）包括：定时器（201），其生成具有预定单位时间的信号周期的信号; 分组串生成单元，生成以信号周期发送的探测分组，并且生成作为在两个探测分组之间插入的至少一个调整分组的至少一个调整分组，其数量对应于测量带宽 ; 发送单元（203），以信号周期发送具有发送时间信息的每个探测分组，并且在发送两个探测分组之一和发送另一个探测分组之间时发送调整分组; 接收单元（207），其从接收装置（12）接收基于每个探测分组的接收时间可获得的信息; 以及确定单元，其使用所接收的返回信息来确定可用带宽。

公开(公告)号：US08009564B2

公开(公告)日：2011-08-30

申请号：US11997680

申请日：2006-08-01

申请人： Kazunobu Konishi ,  Eiichi Muramoto ,  Takahiro Yoneda

发明人： Kazunobu Konishi ,  Eiichi Muramoto ,  Takahiro Yoneda

IPC分类号： G01R31/08

CPC分类号： H04L69/16 ,  H04L12/1836 ,  H04L12/1854 ,  H04L45/00 ,  H04L47/15 ,  H04L47/263 ,  H04L69/161

摘要： In a communication of explicit multicast system used in SICC, the frequency of variation of the transmission rate is reduced to achieve a multimedia data transmission exhibiting a high quality. An available bandwidth estimating part (102) of a transmitting apparatus (100) uses feedback information, which is received by a receiving part (101) from a receiving apparatus (200), to estimate a bandwidth available to the receiving apparatus. A bandwidth correcting part (103) corrects, based on a difference in header size between a current class and an upper-order class, the estimated available bandwidth. A class deciding part (104) uses the corrected bandwidth to change the class to which the receiving apparatus belongs.

摘要翻译： 在SICC中使用的显式多播系统的通信中，降低了传输速率的变化频率以实现呈现出高质量的多媒体数据传输。 发送装置（100）的可用带宽估计部（102）使用来自接收装置（200）的接收部（101）接收到的反馈信息来估计接收装置可用的带宽。 带宽校正部分（103）根据当前类和高级类之间的报头大小的差异来校正可估计的可用带宽。 类决定部（104）使用校正后的带宽来改变接收装置所属的类。

公开(公告)号：US20090285211A1

公开(公告)日：2009-11-19

申请号：US11813476

申请日：2006-01-06

申请人： Eiichi Muramoto ,  Takahiro Yoneda ,  Toyoki Kawahara

发明人： Eiichi Muramoto ,  Takahiro Yoneda ,  Toyoki Kawahara

IPC分类号： H04L12/56

CPC分类号： H04L45/00 ,  H04L47/10

摘要： It is an object of the present invention to receive/play a streaming immediately after a switching not to disconnect it when a terminal for receiving the streaming is switched from a first receiving terminal to a second receiving terminalA communication method of switching a receiving terminal of a streaming to which a rate control using TFRC is applied from a first receiving terminal to a second receiving terminal, includes a deciding step of deciding whether or not a route on a network between a transmitting terminal of the streaming and the first receiving terminal is identical to a route on the network between the transmitting terminal and the second receiving terminal, and a transferring step of transferring history information of a packet loss that the first receiving terminal is managing to the second receiving terminal when it is decided that both routes are identical.

摘要翻译： 本发明的目的是在用于接收流的终端从第一接收终端切换到第二接收终端之后，在切换之后立即接收/播放流。 包括从第一接收终端向第二接收终端应用使用TFRC的速率控制的流，包括决定步骤，判定流的发送终端与第一接收终端之间的网络上的路由是否相同 到发送终端和第二接收终端之间的网络上的路由，以及当确定两条路由相同时，将第一接收终端正在管理的分组丢失的历史信息传送给第二接收终端的传送步骤。

公开(公告)号：US20090245252A1

公开(公告)日：2009-10-01

申请号：US12301598

申请日：2007-05-17

申请人： Kazunobu Konishi ,  Eiichi Muramoto ,  Takahiro Yoneda

发明人： Kazunobu Konishi ,  Eiichi Muramoto ,  Takahiro Yoneda

IPC分类号： H04L12/56

CPC分类号： H04L12/1868 ,  H04L1/1809 ,  H04L45/00 ,  H04L45/16 ,  H04L45/28 ,  H04L2001/0093 ,  H04L2001/0097

摘要： A multicast communication system in which a receiving node which has detected a packet loss can make a retransmission request without applying a high load to a transmitting node, all receiving nodes, and the band of the entire network. The transmitting node transmits an explicit multicast data packet including an address list including a plurality of destination addresses and a bitmap indicating whether the data packet has been delivered to the respective destination addresses, to a plurality of the receiving nodes. The receiving node which has detected the packet loss checks an address list and bitmap of another data packet received and selects a receiving node to which the another data packet has been delivered as a retransmission requester. The receiving node which has detected the packet loss creates a unicast retransmission request packet with the selected receiving node as the destination and transmits it to the selected receiving node.

摘要翻译： 一种组播通信系统，其中检测到分组丢失的接收节点可以在不向发送节点，所有接收节点和整个网络的频带施加高负载的情况下进行重传请求。 发送节点向多个接收节点发送包括包括多个目的地地址的地址列表和指示数据分组是否已经被递送到各个目的地地址的位图的显式多播数据分组。 已经检测到分组丢失的接收节点检查接收到的另一数据分组的地址列表和位图，并选择另一数据分组已经被传送到的接收节点作为重传请求者。 已经检测到分组丢失的接收节点与所选择的接收节点一起创建单播重传请求分组，并将其发送到所选择的接收节点。

公开(公告)号：US07580368B2

公开(公告)日：2009-08-25

申请号：US10576361

申请日：2004-10-20

申请人： Takahiro Yoneda ,  Eiichi Muramoto ,  Fumiaki Suzuki

发明人： Takahiro Yoneda ,  Eiichi Muramoto ,  Fumiaki Suzuki

IPC分类号： H04L12/28

CPC分类号： H04L12/1836

摘要： A packet distribution control method in the case of performing multicast communication in network environment where both networks that support IP multicast and that do not support IP multicast exist. In packet distribution in multicast communication, each end node checks mutually whether or not other end nodes are capable of communicating in IP multicast. Then, each end node uses IP unicast in packet distribution to other end nodes not capable of communicating only in IP multicast.

摘要翻译： 在网络环境中执行组播通信的情况下的分组分发控制方法，其中存在支持IP组播且不支持IP组播的两个网络。 在组播通信中的分组分发中，每个端节点互相检查其他终端节点是否能够进行IP多播通信。 然后，每个终端节点在分组分配中使用IP单播，而不能仅在IP组播中进行通信。