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    • 41. 发明专利
    • Communication quality evaluation program, method and apparatus
    • 通信质量评估方案,方法和设备
    • JP2010103815A
    • 2010-05-06
    • JP2008274154
    • 2008-10-24
    • Fujitsu Ltd富士通株式会社
    • IMAI SATOSHIFUJINO SHINJIUSHIKI KAZUMASAKAWASAKI TAKESHI
    • H04W24/06G08G1/09H04W4/04H04W74/08
    • PROBLEM TO BE SOLVED: To evaluate broadcast type CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance) communication quality in a short time. SOLUTION: The number of terminals inside an overlapped region, the amount of packets to be generated per terminal, a first unit time and a probability of re-scheduling of packet transmission are used to calculate a first normalization traffic volume within the first unit time, and a desired wave transmission success rate is calculated using a predetermined statistic model. In a case where a region excluding the overlapped region from an interference area is divided into a plurality of divided regions in accordance with a CINR (Carrier-to-Interference noise ratio), the number of hidden terminals in each divided region, the amount of packets to be generated per terminal and a second unit time shorter than the first unit time by a DIFS (Distributed Coordination Function) time are used to calculate a second normalization traffic volume, for each divided region, that is incurred from the hidden terminals within the second unit time. The second normalization traffic volume for each divided region and a PER (Packet Error Rate) corresponding to CINR are used to calculate a packet error rate, thereby calculating a packet arrival rate that is a product of an interference avoidance rate, caused by the hidden terminals, calculated from the packet error rate and the desired wave transmission success rate. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:在短时间内评估广播类型CSMA / CA(具有冲突避免的载波侦听多路访问)通信质量。 解决方案:重叠区域内的终端数量,每个终端产生的分组数量,第一单位时间和分组传输的重新调度概率被用于计算第一标准化业务量 单位时间,并且使用预定的统计模型计算期望的波传输成功率。 在根据CINR(载波对干扰噪声比)将来自干扰区域的重叠区域以外的区域划分为多个分割区域的情况下,每个分割区域中的隐藏终端的数量, 使用通过DIFS(分布式协调功能)时间在每个终端生成的分组和比第一单位时间短的第二单位的时间用于计算对于每个划分的区域的第二归一化业务量, 第二单位时间。 使用与CINR相对应的每个划分区域的第二归一化业务量和对应于CINR的PER(分组差错率)来计算分组错误率,从而计算作为由隐藏终端引起的干扰避免速率乘积的分组到达速率 ,从分组错误率和期望的波传输成功率计算。 版权所有(C)2010,JPO&INPIT
    • 43. 发明专利
    • Apparatus, method and program for voice communication
    • 用于语音通信的装置,方法和程序
    • JP2006245651A
    • 2006-09-14
    • JP2005054398
    • 2005-02-28
    • Fujitsu LtdNet-2Com Corpネットツーコム株式会社富士通株式会社
    • NAKAGAWA ITARUMORI SHINICHIROFUJINO SHINJIO KIYOSHI
    • H04M1/00
    • PROBLEM TO BE SOLVED: To improve voice quality by a simpler method in a voice communication apparatus for performing voice communication utilizing VoIP.
      SOLUTION: The apparatus is provided with a detecting unit 201 for detecting whether or not a communication application 200 is presently used as executable by the voice communication apparatus and including an application of VoIP; and an operation control unit 202 for prohibiting the operations of communication applications other than the presently used VoIP application, on the basis of a result of detection by the detecting unit 201 if the VoIP application is activated. Also, the unit 202 prohibits the activation of communication applications other than the VoIP application on the basis of a result of detection of the detecting unit 201 if the VoIP application is presently used.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:通过使用VoIP进行语音通信的语音通信装置中的简单方法来提高语音质量。 解决方案:该装置设置有检测单元201,用于检测通信应用200当前是否被语音通信设备可执行并且包括VoIP的应用; 以及操作控制单元202,用于基于检测单元201检测到VoIP应用是否被激活的结果,禁止除当前使用的VoIP应用之外的通信应用的操作。 此外,如果当前使用VoIP应用,则单元202基于检测单元201的检测结果禁止除VoIP应用之外的通信应用的激活。 版权所有(C)2006,JPO&NCIPI
    • 44. 发明专利
    • Method, program and device of voice speech
    • 语音的方法,程序和设备
    • JP2006025009A
    • 2006-01-26
    • JP2004199333
    • 2004-07-06
    • Fujitsu Ltd富士通株式会社
    • HARA MASAHIROMORI SHINICHIROFUJINO SHINJI
    • H04M1/733H04B7/26H04M1/73H04W88/06
    • H04W88/06H04M1/2535H04W52/0229Y02D70/00Y02D70/142Y02D70/23
    • PROBLEM TO BE SOLVED: To save power in standby and incoming call arrival, and to prolong a standby time by the power saving by efficiently switching ON/OFF of the power supply of a plurality of radio communication devices mounted on voice speech devices.
      SOLUTION: A cellular phone mounted with PHS and WLAN performs a standby operation with the PHS as long as the cellular phone exists within a PHS zone, irrespective of whether or not the cellular phone exists within a WLAN zone. Only when an incoming call arrives when the cellular phone is in a standby state in PHS (only PHS is powered on), the WLAN is powered on, and if the cellular phone exists within the WLAN zone, the incoming call is temporarily disconnected and a return call is transmitted by VoIP with the WLAN (call back). In this case, the PHS is kept in an off state. In contrast, if the cellular phone is out of the WLAN zone when receiving the incoming call, the incoming call is disconnected in the same way, and then, the WLAN is turned off and a return call is made by VoIP with the PHS. Meanwhile if a call back destination cannot be identified, the incoming call is received by the PHS without any change.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:通过有效地切换安装在语音语音设备上的多个无线电通信设备的电源的接通/断开来节省待机和来电的到达功率,并且通过省电来延长待机时间 。

      解决方案:无论蜂窝电话是否存在于WLAN区域内,只要蜂窝电话存在于PHS区域内,安装了PHS和WLAN的蜂窝电话就可以使用PHS进行待机操作。 只有当蜂窝电话在PHS中处于待机状态(仅PHS接通电源)时,才能接通来电,WLAN接通电源,如果蜂窝电话存在于WLAN区域内,则暂时断开来电 返回呼叫由WLAN通过WLAN(回叫)发送。 在这种情况下,PHS保持关闭状态。 相反,如果在接收到来电时蜂窝电话不在WLAN区域内,则以相同的方式断开来电,然后关闭WLAN,并通过VoIP与PHS进行返回呼叫。 同时如果无法识别回叫目的地,则来电将被小灵通接收,而不作任何改变。 版权所有(C)2006,JPO&NCIPI

    • 50. 发明专利
    • RADIO DATA COMMUNICATION SYSTEM
    • JPH09231149A
    • 1997-09-05
    • JP3609596
    • 1996-02-23
    • FUJITSU LTD
    • FUJINO SHINJI
    • G06F13/00H04L1/00H04L12/28H04L29/06
    • PROBLEM TO BE SOLVED: To remove uncertainty peculiar to a radio line by arranging agents on both ends of a radio section at the time of executing data communication between computers through the radio line. SOLUTION: A transmission instruction is sent from the agent 21 to a first radio equipment 1. When a call cannot be originated from the first radio equipment owing to a radio wave situation, the call cannot be received for response waiting from a second radio equipment 2, and call origination is not completed. A call non-completion notice is sent to the first agent 21 as a signal or a parameter showing the state of communication from the first radio equipment 1. The first agent 21 sends the call instruction again to the first radio equipment 1 without giving a notice to the first computer 10. When the call can be originated to the second radio equipment 2, an incoming notice is set to the second computer 20 through the second agent 2 from the second radio equipment 2. Thus, connection by the radio line is formed between the radio equipments 1 and 2.