Method and system for providing personal base station communications
    8.
    发明授权
    Method and system for providing personal base station communications 失效
    提供个人基站通信的方法和系统

    公开(公告)号:US06381230B1

    公开(公告)日:2002-04-30

    申请号:US09123495

    申请日:1998-07-28

    IPC分类号: H04Q700

    摘要: A method and system for operation of a personal base station where the forward link of a personal base station is on the same frequency assignment as a first forward link data signal transmitted by a macro base station belonging to a cellular communication system. A first subscriber station communicates with the macro base station. The personal base station generates a second forward link data signal and communicates with a second subscriber station. The personal base station receives the first forward link data signal and combines it with its own second forward link data signal to form a combined forward link data signal. The personal base station then transmits the combined forward link data signal. The first subscriber station is able to receive and diversity combine the combined forward link data signal, improving the signal to noise ratio that would otherwise occur in the vicinity of the personal base station.

    摘要翻译: 一种用于个人基站的操作的方法和系统,其中个人基站的前向链路与属于蜂窝通信系统的宏基站发送的与第一前向链路数据信号相同的频率分配。 第一用户站与宏基站进行通信。 个人基站产生第二前向链路数据信号并与第二用户台进行通信。 个人基站接收第一前向链路数据信号并将其与其自己的第二前向链路数据信号组合,以形成组合的前向链路数据信号。 然后,个人基站发送组合的前向链路数据信号。 第一用户台能够接收并分集组合前向链路数据信号,从而提高否则将发生在个人基站附近的信噪比。

    Method and apparatus for obtaining transmit diversity using switched antennas
    9.
    发明授权
    Method and apparatus for obtaining transmit diversity using switched antennas 有权
    使用交换天线获得发射分集的方法和装置

    公开(公告)号:US07031398B2

    公开(公告)日:2006-04-18

    申请号:US10913093

    申请日:2004-08-06

    IPC分类号: H04B7/02

    摘要: A method and apparatus for providing diversity transmissions to a mobile unit from a transmitting station having at least first and second antennas by repeatedly switching between the two antennas during the transmission of information to the receiving unit. Message information is transmitted from the first antenna in the transmitting station to the receiving unit. After the start of the transmission of the message information from the first antenna, transmission of the message information from the first antenna to the receiving unit terminates and transmission of the message information from the second antenna in the transmitting station to the receiving unit is initiated. Some time after transmission of the message information from second antenna is initiated, the transmission of the message information from the second antenna to the receiving unit terminates and transmission of the message information from the first antenna in the transmitting station to the receiving unit is initiated. Repeated switching between the first and second antennas is achieved by repeating the process. The switching results in diversity transmissions that improve the ability of a receiving unit to receive the coded and interleaved transmitted message information from the transmitting station. The interleaver disperses the encoded symbols in each antenna dwell period such that the decoder decisions are based on a mix of symbols form each antenna. Therefore the decoder decisions are unreliable only when the mix of symbols from the different antennas, with different fading characteristics, are unreliable over the span of symbols the decoder uses in its decision process.

    摘要翻译: 一种用于在具有至少第一和第二天线的发射台向移动单元提供分集传输的方法和装置,通过在向接收单元发送信息期间在两个天线之间重复切换。 消息信息从发送站中的第一天线发送到接收单元。 在从第一天线发送消息信息开始之后,消息信息从第一天线到接收单元的传输终止,并且发送消息信息从发送站中的第二天线到接收单元的发送。 开始从第二天线发送消息信息之后的某个时间,消息信息从第二天线到接收单元的传输终止,并且发送消息信息从发送站中的第一天线到接收单元的发送。 通过重复该过程来实现第一和第二天线之间的重复切换。 切换导致分集传输,其提高接收单元从发射台接收编码和交织的传输消息信息的能力。 交织器在每个天线驻留周期中分散编码符号,使得解码器判定基于每个天线的符号混合。 因此,只有当解码器在其决策过程中使用的符号范围内,来自具有不同衰落特性的不同天线的符号混合不可靠时,解码器判决才是不可靠的。

    Method and apparatus for obtaining transmit diversity using switched antennas
    10.
    发明授权
    Method and apparatus for obtaining transmit diversity using switched antennas 失效
    使用交换天线获得发射分集的方法和装置

    公开(公告)号:US06795508B1

    公开(公告)日:2004-09-21

    申请号:US09114036

    申请日:1998-07-10

    IPC分类号: H04B702

    摘要: A method and apparatus for providing diversity transmissions to a mobile unit from a transmitting station having at least first and second antennas by repeatedly switching between the two antennas during the transmission of information to the receiving unit. Message information is transmitted from the first antenna in the transmitting station to the receiving unit. After the start of the transmission of the message information from the first antenna, transmission of the message information from the first antenna to the receiving unit terminates and transmission of the message information from the second antenna in the transmitting station to the receiving unit is initiated. Some time after transmission of the message information from second antenna is initiated, the transmission of the message information from the second antenna to the receiving unit terminates and transmission of the message information from the first antenna in the transmitting station to the receiving unit is initiated. Repeated switching between the first and second antennas is achieved by repeating the process. The switching results in diversity transmissions that improve the ability of a receiving unit to receive the coded and interleaved transmitted message information from the transmitting station. The interleaver disperses the encoded symbols in each antenna dwell period such that the decoder decisions are based on a mix of symbols form each antenna. Therefore the decoder decisions are unreliable only when the mix of symbols from the different antennas, with different fading characteristics, are unreliable over the span of symbols the decoder uses in its decision process.

    摘要翻译: 一种用于在具有至少第一和第二天线的发射台向移动单元提供分集传输的方法和装置,通过在向接收单元发送信息期间在两个天线之间重复切换。 消息信息从发送站中的第一天线发送到接收单元。 在从第一天线发送消息信息开始之后,消息信息从第一天线到接收单元的传输终止,并且发送消息信息从发送站中的第二天线到接收单元的发送。 开始从第二天线发送消息信息之后的某个时间,消息信息从第二天线到接收单元的传输终止,并且发送消息信息从发送站中的第一天线到接收单元的发送。 通过重复该过程来实现第一和第二天线之间的重复切换。 切换导致分集传输,其提高接收单元从发射台接收编码和交织的传输消息信息的能力。 交织器在每个天线驻留周期中分散编码符号,使得解码器判定基于每个天线的符号混合。 因此,只有当解码器在其决策过程中使用的符号范围内,来自具有不同衰落特性的不同天线的符号混合不可靠时,解码器判决才是不可靠的。