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1. 发明申请

WO2009028729A4 COMMUNICATION APPARATUS AND METHOD 审中-公开
公开(公告)号：WO2009028729A4
公开(公告)日：2009-03-05
申请号：PCT/JP2008/066012
申请日：2008-08-29
申请人： PANASONIC CORPORATION , KONISHI, Taisuke , NOMA, Nobuhiko , KODAMA, Nobutaka , KOGA, Hisao , YOSHIDA, Shigeo
发明人： KONISHI, Taisuke , NOMA, Nobuhiko , KODAMA, Nobutaka , KOGA, Hisao , YOSHIDA, Shigeo
IPC分类号： H04L27/26
摘要： A communication apparatus is connected to a transmission channel for transmitting data to another communication apparatus. The communication apparatus includes: a communication frame generator which generates a communication frame for storing the data; and a controller which controls to insert a pilot symbol into the communication frame based on a state of the transmission channel.

2. 发明申请

WO2005011226A1 APPARATUS AND METHOD FOR MULTICARRIER TRANSMISSION / RECEPTION WITH TRANSMISSION QUALITY EVALUATION 审中-公开
标题翻译：用于传输质量评估的多媒体传输/接收的装置和方法
公开(公告)号：WO2005011226A1
公开(公告)日：2005-02-03
申请号：PCT/JP2004/010587
申请日：2004-07-20
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. , KUROBE, Akio , YOSHIDA, Shigeo , KIMURA, Tomohiro , IGATA, Yuji , MAKI, Masahiro , WAKISAKA, Toshiyuki , KOGA, Hisao , OISHI, Mutsuhiko
发明人： KUROBE, Akio , YOSHIDA, Shigeo , KIMURA, Tomohiro , IGATA, Yuji , MAKI, Masahiro , WAKISAKA, Toshiyuki , KOGA, Hisao , OISHI, Mutsuhiko
IPC分类号： H04L27/26
CPC分类号： H04L5/006 , H04L1/0003 , H04L1/0026 , H04L1/1848 , H04L1/188 , H04L5/0007 , H04L5/0046 , H04L25/0206 , H04L27/0004
摘要： There is provided a communication network system which can set communication parameters which enable an operation under a maximum possible communication rate in a situation where a transmission path has cyclic noise/impedance fluctuations, without being influenced by such local noise/impedance fluctuations. A transmission/reception apparatus 100 transmits training packets for checking the state of the power line at two distinct points in time. Each time a training packet is received, a transmission/reception apparatus 101 analyzes SNR at each carrier frequency, and stores an SNR evaluation result. The transmission/reception apparatus 101 compares two SNR evaluation results which are obtained through two instances of a channel estimation algorithm, selects an SNR evaluation result which dictates a faster PHY rate, and transmits it to the transmission/reception apparatus 100. The transmission/reception apparatus 100 changes modulation/demodulation rules based on the received SNR analytical result.
摘要翻译：提供了一种通信网络系统，其可以设置在传输路径具有循环噪声/阻抗波动的情况下能够以最大可能通信速率进行操作的通信参数，而不受这种局部噪声/阻抗波动的影响。发送/接收装置100在两个不同的时间点发送用于检查电力线的状态的训练分组。每次接收到训练分组时，发送/接收装置101分析每个载波频率的SNR，并存储SNR评估结果。发送/接收装置101比较通过信道估计算法的两个实例获得的两个SNR评估结果，选择指示更快的PHY速率的SNR评估结果，并将其发送到发送/接收装置100.发送/接收设备100基于接收到的SNR分析结果改变调制/解调规则。

3. 发明申请

WO2006022364A1 POWER LINE COMMUNICATION SYSTEM 审中-公开
标题翻译：电力线通信系统
公开(公告)号：WO2006022364A1
公开(公告)日：2006-03-02
申请号：PCT/JP2005/015500
申请日：2005-08-19
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. , YOSHIDA, Shigeo , OHMI, Shinichiro , YASUKAWA, Toru
发明人： YOSHIDA, Shigeo , OHMI, Shinichiro , YASUKAWA, Toru
IPC分类号： H04B3/54
CPC分类号： H04B3/54 , H04B2203/5495
摘要： A communication control portion (11) performs most of communication processing performed by a communication apparatus (1). The communication control portion (11) also executes communication with another communication apparatus (1) using a communication parameter determined by a communication parameter determination portion (13). A transmission line estimation portion (12) measures characteristics of a transmission line (2) at a predetermined timing and regarding a predetermined section, and estimates the state of the transmission line (2). The communication parameter determination portion (13) newly generates an optimum communication parameter from a plurality of communication parameters obtained based on an estimation result obtained on the transmission line (2) by the transmission line estimation portion (12).
摘要翻译：通信控制部分（11）执行由通信装置（1）执行的大部分通信处理。通信控制部（11）还使用由通信参数确定部（13）确定的通信参数来执行与另一通信装置（1）的通信。传输线估计部分（12）在预定定时测量传输线（2）的特性并关于预定部分，并估计传输线（2）的状态。通信参数确定部分（13）根据通过传输线估计部分（12）在传输线（2）上获得的估计结果获得的多个通信参数，新产生最佳通信参数。

4. 发明申请

WO2006022363A1 METHOD AND APPARATUS FOR POWER LINE COMMUNICATION 审中-公开
标题翻译：电力线通信的方法和装置
公开(公告)号：WO2006022363A1
公开(公告)日：2006-03-02
申请号：PCT/JP2005/015499
申请日：2005-08-19
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. , YOSHIDA, Shigeo , OHMI, Shinichiro , YASUKAWA, Tohru , YAMAGUCHI, Tsuyoshi
发明人： YOSHIDA, Shigeo , OHMI, Shinichiro , YASUKAWA, Tohru , YAMAGUCHI, Tsuyoshi
IPC分类号： H04B3/54
CPC分类号： H04B3/542 , H04B2203/5495
摘要： The variation cycle L of the characteristics of a transmission line is divided into a plurality of sections (n sections), a procedure is repeated in which transmission line estimation is performed for only one section among n sections in one beacon period, and thus transmission line estimation is performed for all of the n sections. The beacon period T is set based on (T=L Lm/n), where n is an integer that is 2 or larger, and m is an integer that is n or larger and whose greatest common measure with n is 1.
摘要翻译：传输线的特性的变化周期L被分成多个部分（n部分），重复在一个信标周期中的n个部分中仅对一个部分进行传输线估计的过程，因此传输线对所有n个部分执行估计。信标周期T基于（T = L Lm / n）设定，其中n是2以上的整数，m是n以上的整数，并且n的最大公差为1。

5. 发明申请

WO2005036809A1 COMMUNICATION TERMINAL AND METHOD FOR TIMING THE DETECTION OF COMMUNICATION-MEDIUM CHARACTERISTICS 审中-公开
标题翻译：通信终端和通信中介特性检测方法
公开(公告)号：WO2005036809A1
公开(公告)日：2005-04-21
申请号：PCT/JP2004/015008
申请日：2004-10-05
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. , KOIDE, Youhei , YASUKAWA, Tohru , YOSHIDA, Shigeo , OHMI, Shinichiro
发明人： KOIDE, Youhei , YASUKAWA, Tohru , YOSHIDA, Shigeo , OHMI, Shinichiro
IPC分类号： H04L1/20
CPC分类号： H04L1/20 , H04L1/0026
摘要： The present invention is a communication terminal which modulates and demodulates a packet for transmission and reception based on a communication parameter for modulation and demodulation determined according to a communication-medium characteristic. The communication terminal according to the present invention includes: information-element extracting means which extracts, with each predetermined cycle, information indicative of either one of transmission efficiency and reception quality of the packet as an information element; difference calculating means which calculates, with each said cycle, a difference between a first information element extracted by the information-element extracting means and a second information element previously extracted by the information-element extracting means; and detecting-scheme performance determining means which determines, based on the difference between the first information element and the second information element calculated by the difference calculating means, with each said cycle, whether a scheme of detecting the communication-medium characteristic for changing the communication parameter is to be performed.
摘要翻译：本发明是一种通信终端，其基于用于根据通信介质特性确定的用于调制和解调的通信参数来调制和解调用于发送和接收的分组。根据本发明的通信终端包括：信息元素提取装置，其以每个预定周期提取表示分组的传输效率和接收质量中的任一个的信息作为信息元素; 差分计算装置，用于在每个所述周期中计算由所述信息元素提取装置提取的第一信息元素与由所述信息元素提取装置先前提取的第二信息元素之间的差; 以及检测方案性能确定装置，其基于由差分计算装置计算的第一信息元素和第二信息元素之间的差与每个所述周期确定检测用于改变通信的通信介质特性的方案参数要执行。

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