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    • 65. 发明授权
    • Softer handoff in a base station employing virtual channel elements
    • 在采用虚拟通道元件的基站中较软切换
    • US06519456B2
    • 2003-02-11
    • US09172489
    • 1998-10-14
    • Franklin P. AntonioHoutan DeheshWalid HamdyKuo-Chun LeeJan K. Wegrzyn
    • Franklin P. AntonioHoutan DeheshWalid HamdyKuo-Chun LeeJan K. Wegrzyn
    • H04Q722
    • H04W36/06H04W36/18H04W52/40
    • A base station architecture splits modem functionality into modulator and demodulator entities, each configured to handle multiple telephone calls. A high-speed digital bus with associated routing elements connects multiple-channel (i.e., multiuser) modulator and demodulator elements. The modulator and demodulator elements may be physically separated, residing on different cards, and even different shelves, within the base station. During softer handoff between forward channels of the base station, multiple modulator elements use the address of a demodulator element in communication with a mobile subscriber unit. A base station controller broadcasts forward-link frames to all modulator elements. The multiple modulator elements simultaneously receive forward-link frames from the base station controller. The multiple modulator elements filter these forward-link frames and accept only those to be transmitted to the particular mobile subscriber unit in communication with the demodulator element.
    • 基站架构将调制解调器功能分解成调制器和解调器实体,每个被配置为处理多个电话呼叫。 具有相关联的路由元件的高速数字总线连接多通道(即,多用户)调制器和解调器元件。 调制器和解调器元件可以在基站内物理上分离,驻留在不同的卡上,甚至不同的货架上。 在基站的前向信道之间的较软切换期间,多个调制器元件使用与移动用户单元通信的解调器元件的地址。 基站控制器向所有调制器元件广播前向链路帧。 多个调制器元件同时从基站控制器接收前向链路帧。 多个调制器元件对这些前向链路帧进行过滤,并且仅接收要发射到与解调器元件通信的特定移动用户单元的那些。
    • 67. 发明授权
    • Inter-system calling supporting inter-system soft handoff
    • 系统间呼叫支持系统间切换
    • US5940762A
    • 1999-08-17
    • US649959
    • 1996-05-01
    • Kuo-Chun LeeGadi KarmiBibhu MohantyTodd R. SuttonNoam A. Ziv
    • Kuo-Chun LeeGadi KarmiBibhu MohantyTodd R. SuttonNoam A. Ziv
    • H04W36/14H04W36/18H04Q7/22
    • H04W36/0066H04W36/18H04W36/22
    • A method and apparatus for performing an inter-system soft handoff is described. In accordance with the present invention, when a subscriber unit crosses from a first cellular system to a second cellular system, a base station controller determines if sufficient network resources are available to conduct a inter-system soft handoff. If so, the base station controller generates a set of signaling messages that cause call processing resource to be allocated and for the call to be processed at the second cellular system. The base station controller then perform data-selection and data-broadcast for the call by transmitting data to the subscriber unit by way of the second cellular system as well as via one or more base stations to which the base station controller is directly coupled. The determination as to whether sufficient network resources are available to conduct the inter-system soft handoff is based on the type of connection that exists between the first cellular system and the second cellular system, the number of inter-system calls being conducted, and the frame offset of the call currently being processed.
    • 描述了用于执行系统间切换的方法和装置。 根据本发明,当用户单元从第一蜂窝系统交叉到第二蜂窝系统时,基站控制器确定足够的网络资源是否可用于进行系统间切换。 如果是,则基站控制器生成一组信令消息,这些信令消息使呼叫处理资源被分配,并且呼叫在第二蜂窝系统处被处理。 基站控制器然后通过第二蜂窝系统以及经由基站控制器直接耦合到的一个或多个基站向用户单元发送数据来执行呼叫的数据选择和数据广播。 关于足够的网络资源是否可用于进行系统间切换的确定是基于存在于第一蜂窝系统和第二蜂窝系统之间的连接类型,正在进行的系统间呼叫的数量,以及 正在处理的呼叫的帧偏移量。