公开(公告)号：US06639903B2

公开(公告)日：2003-10-28

申请号：US10099371

申请日：2002-03-14

申请人： Masatomo Nakano ,  Masafumi Onuki ,  Hiroshi Nakamura

发明人： Masatomo Nakano ,  Masafumi Onuki ,  Hiroshi Nakamura

IPC分类号： H04B700

CPC分类号： H04Q11/0478 ,  H04L2012/5607 ,  H04L2012/5651 ,  H04L2012/5662 ,  H04L2012/5679 ,  H04W92/14

摘要： An improvement of an ATM transmission system between a mobileservices switching center and a base station in a mobile communication system. A delay time for generating/sending out a cell is minimized to ensure the information quality required for real time transmission. When the transmission interval of a call type a is T, call types b and c whose periods are twice and four time that of the call type a should be transmitted at intervals twice and four times that of the call type a. A transmitted frame assembler/disassembler 104 in the base station prepares transmitted frames 201 each including the cell slots 201-1, 201-2 and 201-3 for transferring the respective call types, and schedules such that the transmitted frames are sent out to a channel 112 at the interval T, thereby enabling the transmission to be carried out without delay.

公开(公告)号：US06442149B1

公开(公告)日：2002-08-27

申请号：US08849963

申请日：1997-06-06

申请人： Masatomo Nakano ,  Masafumi Onuki ,  Hiroshi Nakamura

发明人： Masatomo Nakano ,  Masafumi Onuki ,  Hiroshi Nakamura

IPC分类号： H04Q700

CPC分类号： H04Q11/0478 ,  H04L2012/5607 ,  H04L2012/5651 ,  H04L2012/5662 ,  H04L2012/5679 ,  H04W92/14

摘要： An improvement of an ATM transmission system between a mobileservices switching center and a base station in a mobile communication system. A delay time for generating/sending out a cell is minimized to ensure the information quality required for real time transmission. When the transmission interval of a call type a is T, call types b and c whose periods are twice and four time that of the call type a should be transmitted at intervals twice and four times that of the call type a. A transmitted frame assembler/disassembler 104 in the base station prepares transmitted frames 201 each including the cell slots 201-1, 201-2 and 201-3 for transferring the respective call types, and schedules such that the transmitted frames are sent out to a channel 112 at the interval T, thereby enabling the transmission to be carried out without delay.

公开(公告)号：US06671289B1

公开(公告)日：2003-12-30

申请号：US08966862

申请日：1997-11-07

申请人： Motoshi Tamura ,  Takatoshi Okagawa ,  Hiroshi Nakamura ,  Akira Kaiyama ,  Masafumi Onuki ,  Akihisa Nakajima

发明人： Motoshi Tamura ,  Takatoshi Okagawa ,  Hiroshi Nakamura ,  Akira Kaiyama ,  Masafumi Onuki ,  Akihisa Nakajima

IPC分类号： H04J324

CPC分类号： H04L12/5601 ,  H04L2012/5649 ,  H04L2012/5652 ,  H04L2012/5656 ,  H04L2012/5672

摘要： A short cell multiplexing is provided for chiefly transmitting data shorter than the payload of a standard ATM cell (basically the data of less than 48 bytes, but the data more than 48 bytes can be allowed). A standard ATM cell assembler 1 converts various forms of input information into short cells, places the short cells in standard ATM cells efficiently considering their information length, and output them to a B/ISDN network 7. The standard ATM cell disassembler 2 disassembles the standard ATM cells, which are assembled by the standard ATM cell assembler 1 and is input through the B-ISDN network 7, into short cells, converts the short cells into those with the original input information forms, and outputs them to channels. The configuration makes it possible for the short cell ATM cell multiplexing to improve channel efficiency with small delay, and matching to the standard ATM system.

摘要翻译： 提供短信元复用以主要发送短于标准ATM信元有效载荷的数据（基本上是小于48字节的数据，但可允许超过48个字节的数据）。 标准ATM信元汇编器1将各种形式的输入信息转换为短信元，将短信元放在标准ATM信元中有效地考虑其信息长度，并将其输出到B / ISDN网络7.标准ATM信元分解器2拆分标准 由标准ATM信元装配器1组装并通过B-ISDN网络7输入的ATM信元变成短信元，将短信元转换为具有原始输入信息形式的短信元，并将其输出到信道。 该配置使得短小区ATM信元复用可以以较小的延迟提高信道效率，并且与标准ATM系统匹配。

公开(公告)号：US6130888A

公开(公告)日：2000-10-10

申请号：US817996

申请日：1997-11-05

申请人： Hisakazu Tsuboya ,  Hiroshi Nakamura ,  Masafumi Onuki ,  Akihisa Nakajima

发明人： Hisakazu Tsuboya ,  Hiroshi Nakamura ,  Masafumi Onuki ,  Akihisa Nakajima

IPC分类号： H04L12/64 ,  H04L12/801 ,  H04L12/853 ,  H04L12/911 ,  H04Q11/04 ,  H04L12/56

CPC分类号： H04Q11/0478 ,  H04L12/6418 ,  H04L2012/5616 ,  H04L2012/563 ,  H04L2012/5653 ,  H04L2012/5671 ,  H04L2012/5672 ,  H04L2012/6481 ,  H04L2012/6494

摘要： An ATM transmission system which transmits voice data in an asynchronous transfer mode (ATM). It implements compression of a mute section over a channel by detecting the mute section of a call and by physically suppressing its transmission over the channel as an ATM cell. A transmitting side detects the mute section, generates vocal/mute information, and generates a mute start cell and a mute end cell. A receiving side generates a mute section at a fixed interval when receiving the mute start cell, and returns to a normal receiving mode of a speech spurt cell immediately when receiving the mute end cell. The suppression of the mute section makes it possible to reduce the occupied bandwidth, and to increase the channel efficiency.

摘要翻译： PCT No.PCT / JP96 / 02438 Sec。 371日期：1997年11月5日 102（e）日期1997年11月5日PCT 1996年8月30日PCT公布。 公开号WO97 / 08871 日期1997年3月6日一种以异步传输模式（ATM）发送语音数据的ATM传输系统。 它通过检测呼叫的静音部分并且通过物理地抑制其作为ATM信元在信道上的传输来实现信道上的静音部分的压缩。 发送端检测静音部分，产生声/静音信息，并产生静音开始单元和静音端单元。 接收端在接收到静音开始单元时以固定的间隔产生静音部分，并且当接收静音端单元时立即返回到语音突发单元的正常接收模式。 抑制静音部分可以减少占用带宽，并提高信道效率。