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    • 1. 发明申请
    • Digital communications system
    • 数字通信系统
    • US20080310544A1
    • 2008-12-18
    • US11998936
    • 2007-12-03
    • Yutaka AsanumaShigeo TerabeKengo Kurose
    • Yutaka AsanumaShigeo TerabeKengo Kurose
    • H04L27/00
    • H04L1/0046H04L1/0038H04L1/0054H04L1/0059H04L1/0061H04L5/0007
    • In a base station, after CRC is added to transmission data as a detection code, the transmission data is subjected to error-correcting coding using a convolutional code based on tail biting, divided into four frames of P-BCH and transmitted. For this reason, at a mobile station, even if reception (synthesis) is started from any frame of P-BCH represented as (b-1) to (b-4), a cyclic structure of the transmission signal is maintained due to the tail biting and reception data shifted by unit of frame can be obtained. For this reason, at the mobile station, even if a leading frame is unknown, decoding can be executed by one-time error-correcting decoding. A result of the decoding is subjected to CRC detection in four frame timings, the leading frame is detected and the transmission data is restored.
    • 在基站中,在将CRC作为检测码添加到发送数据之后,使用基于尾部咬合的卷积码将发送数据进行纠错编码,分割成4个P-BCH帧并进行发送。 因此,在移动站中,即使从(b-1)〜(b-4)所示的P-BCH的任意帧开始接收(合成),由于发送信号的循环结构 可以获得以帧为单位移动的尾部咬合和接收数据。 因此,在移动站中,即使领先帧未知,也可以通过一次纠错解码来进行解码。 解码的结果在四帧定时中进行CRC检测,检测前导帧并恢复发送数据。
    • 3. 发明授权
    • Radio communication system and radio communication method
    • 无线电通信系统和无线电通信方法
    • US07907675B2
    • 2011-03-15
    • US11897226
    • 2007-08-29
    • Yutaka AsanumaShigeo TerabeKengo Kurose
    • Yutaka AsanumaShigeo TerabeKengo Kurose
    • H04L27/28
    • H04L27/2608H04L1/0003H04L1/0006H04L1/0009H04L1/0016H04L1/0026H04L1/0071H04L1/08
    • In step 5a, a mobile-station measures a reception level and an interference level with the other base-stations, for a base-station considered as a communication partner. In step 5b, the mobile-station transmits a measurement result obtained in step 5a as control information to the base-station considered as the communication partner. In step 5c, the base-station determines a transmission format in a transmission format candidate group used for the transmission to the mobile-station, on the basis of the control information, etc. If the base-station discriminates that an area where the mobile-station considered as the transmission destination is located has a great influence since an interference level indicated by the control information received from the mobile-station exceeds a preset threshold value, the base-station determines use of a transmission format in which repetition is executed at more than two times after executing interleaving resistant to the interference, in the transmission format candidate group.
    • 在步骤5a中,对于被认为是通信伙伴的基站,移动台测量与其他基站的接收电平和干扰电平。 在步骤5b中,移动台将在步骤5a中获得的测量结果作为控制信息发送到被认为是通信对方的基站。 在步骤5c中,基站基于控制信息等,确定用于向移动台发送的发送格式候选组中的发送格式。如果基站判别移动台 由于由从移动站接收到的控制信息指示的干扰等级超过预先设定的阈值,所以被认为是发送目的地的场所具有很大的影响,所以基站确定使用其中执行重复的发送格式 在传输格式候选组中执行抗干扰的交织之后的两次以上。
    • 6. 发明授权
    • Digital communications system
    • 数字通信系统
    • US08457241B2
    • 2013-06-04
    • US11998936
    • 2007-12-03
    • Yutaka AsanumaShigeo TerabeKengo Kurose
    • Yutaka AsanumaShigeo TerabeKengo Kurose
    • H04L1/0003
    • H04L1/0046H04L1/0038H04L1/0054H04L1/0059H04L1/0061H04L5/0007
    • In a base station, after CRC is added to transmission data as a detection code, the transmission data is subjected to error-correcting coding using a convolutional code based on tail biting, divided into four frames of P-BCH and transmitted. For this reason, at a mobile station, even if reception (synthesis) is started from any frame of P-BCH represented as (b-1) to (b-4), a cyclic structure of the transmission signal is maintained due to the tail biting and reception data shifted by unit of frame can be obtained. For this reason, at the mobile station, even if a leading frame is unknown, decoding can be executed by one-time error-correcting decoding. A result of the decoding is subjected to CRC detection in four frame timings, the leading frame is detected and the transmission data is restored.
    • 在基站中,在将CRC作为检测码添加到发送数据之后,使用基于尾部咬合的卷积码将发送数据进行纠错编码,分割成4个P-BCH帧并进行发送。 因此,在移动站中,即使从(b-1)〜(b-4)所示的P-BCH的任意帧开始接收(合成),由于发送信号的循环结构 可以获得以帧为单位移动的尾部咬合和接收数据。 因此,在移动站中,即使领先帧未知,也可以通过一次纠错解码来进行解码。 解码的结果在四帧定时中进行CRC检测,检测前导帧并恢复发送数据。
    • 8. 发明申请
    • Radio communication system and radio communication method
    • 无线电通信系统和无线电通信方法
    • US20080181320A1
    • 2008-07-31
    • US11897226
    • 2007-08-29
    • Yutaka AsanumaShigeo TerabeKengo Kurose
    • Yutaka AsanumaShigeo TerabeKengo Kurose
    • H04L27/28
    • H04L27/2608H04L1/0003H04L1/0006H04L1/0009H04L1/0016H04L1/0026H04L1/0071H04L1/08
    • In step 5a, a mobile-station measures a reception level and an interference level with the other base-stations, for a base-station considered as a communication partner. In step 5b, the mobile-station transmits a measurement result obtained in step 5a as control information to the base-station considered as the communication partner. In step 5c, the base-station determines a transmission format in a transmission format candidate group used for the transmission to the mobile-station, on the basis of the control information, etc. If the base-station discriminates that an area where the mobile-station considered as the transmission destination is located has a great influence since an interference level indicated by the control information received from the mobile-station exceeds a preset threshold value, the base-station determines use of a transmission format in which repetition is executed at more than two times after executing interleaving resistant to the interference, in the transmission format candidate group.
    • 在步骤5a中,对于被认为是通信伙伴的基站,移动台测量与其他基站的接收电平和干扰电平。 在步骤5b中,移动站将在步骤5a中获得的测量结果作为控制信息发送到被认为是通信对方的基站。 在步骤5c中,基站基于控制信息等,确定用于向移动台发送的发送格式候选组中的发送格式。如果基站判别出 被认为是发送目的地的移动台具有很大的影响,因为由移动站接收到的控制信息指示的干扰等级超过预设的阈值,所以基站确定使用重复执行的传输格式 在传输格式候选组中执行抗干扰的交织之后的两次以上。