Medium access control layer for packetized wireless systems
    1.
    发明授权
    Medium access control layer for packetized wireless systems 有权
    用于分组化无线系统的媒体接入控制层

    公开(公告)号:US06532225B1

    公开(公告)日:2003-03-11

    申请号:US09361572

    申请日:1999-07-27

    IPC分类号: H04Q728

    摘要: An arrangement where, in addition to the control channels that are used to set up sessions, there is a logically and physically separate and independent set of control channels that can be used as session control channels. Illustratively, the physical GSM frame arrangement that employs 8 logical slots is used, with one slot both in the uplink and downlink dedicated to these separate control channels. In the downlink, such a control channel provides channel grant information, requests to make and transmit power measurements, poll mobile units, etc. In the uplink, such a control channel can be used to request access to a traffic channel, to report on power measurements, to request special hand-off handling, to respond to polling, etc. Because the uplink session control channel does not need to carry a significant amount of information, the GSM slot can be divided into minislots, with each minislot constituting a session control channel for a group of mobile units.

    摘要翻译: 除了用于建立会话的控制信道之外,还有一个逻辑上和物理上分开且独立的控制信道集合,可用作会话控制信道。 示例性地,使用采用8个逻辑时隙的物理GSM帧布置,其中专用于这些单独控制信道的上行链路和下行链路中的一个时隙。 在下行链路中,这样的控制信道提供信道授权信息,发送功率测量的请求,轮询移动单元等。在上行链路中,可以使用这样的控制信道来请求访问业务信道,报告功率 测量,请求特殊切换处理,以响应轮询等。由于上行会话控制信道不需要携带大量的信息,所以GSM时隙可以分为小时隙,每个小时隙构成会话控制 一组移动单元的通道。

    Dynamic frequency hopping
    2.
    发明授权
    Dynamic frequency hopping 有权
    动态跳频

    公开(公告)号:US06501785B1

    公开(公告)日:2002-12-31

    申请号:US09472784

    申请日:1999-12-28

    IPC分类号: H04J1306

    CPC分类号: H04W16/10 H04B7/2621

    摘要: This invention provides a dynamic frequency hopping system that utilizes information from multiple base stations. The system assigns frequency hopping patterns based on current interference and traffic environments to avoid interference thus gaining the benefits of interference averaging and interference avoidance. The system imposes less stringent measurement requirements on terminals (wireless mobile devices) because many measurement requirements are replaced by generating estimates based on measurement data received from other base stations within a base station neighborhood. The system may continuously verify that the frequency hopping patterns assigned to the links of the system optimizes system performance. The system compares system performance of possible frequency hopping patterns against currently assigned frequency hopping pattern to optimize system performance. When a request for a link is received, a similar process as above is performed where the request is granted/denied/delayed based on system optimization requirements. In this way, the frequency hopping patterns of the links of the system may be assigned so that an optimum system performance may be obtained.

    摘要翻译: 本发明提供了利用来自多个基站的信息的动态跳频系统。 该系统基于当前的干扰和业务环境分配跳频模式,以避免干扰,从而获得干扰平均和干扰避免的好处。 该系统对终端(无线移动设备)施加较不严格的测量要求,因为通过基于从基站附近的其他基站接收的测量数据生成估计来代替许多测量要求。 系统可以连续验证分配给系统的链路的跳频模式优化系统性能。 该系统将可能的跳频模式的系统性能与当前分配的跳频模式进行比较,以优化系统性能。 当接收到链接的请求时,执行与根据系统优化要求授予/拒绝/延迟请求的类似的过程。 以这种方式,可以分配系统的链路的跳频模式,使得可以获得最佳的系统性能。

    Dynamic channel assignment
    5.
    发明授权
    Dynamic channel assignment 有权
    动态频道分配

    公开(公告)号:US07457259B2

    公开(公告)日:2008-11-25

    申请号:US11217045

    申请日:2005-09-01

    IPC分类号: H04B7/185

    CPC分类号: H04W72/082

    摘要: This invention provides interference predictions, suitable for least interference dynamic channel assignment use or other frequency hopping uses by de-coupling the time slot assignment and the frequency hopping pattern assignment. In particular, a least interfered time slot is selected based on an aggregate interference measurement performed across an entire transmission band or a pre-specified range of frequencies in the transmission band. A user is assigned a least interfered time slot and provided an appropriate frequency hopping pattern.

    摘要翻译: 本发明提供适合于通过解耦合时隙分配和跳频图案分配的最小干扰动态信道分配使用或其他跳频使用的干扰预测。 特别地,基于在整个传输频带或传输频带中预先指定的频率范围内执行的聚合干扰测量来选择最少干扰的时隙。 给用户分配最少的干扰时隙并提供适当的跳频模式。

    Dynamic channel assignment
    9.
    发明授权
    Dynamic channel assignment 有权
    动态频道分配

    公开(公告)号:US06954465B2

    公开(公告)日:2005-10-11

    申请号:US09791200

    申请日:2001-02-22

    IPC分类号: H04W16/10 H04W72/08 H04B7/212

    CPC分类号: H04W72/082

    摘要: This invention provides interference predictions, suitable for least interference dynamic channel assignment use or other frequency hopping uses by de-coupling the time slot assignment and the frequency hopping pattern assignment. In particular, a least interfered time slot is selected based on an aggregate interference measurement performed across an entire transmission band or a pre-specified range of frequencies in the transmission band. A user is assigned a least interfered time slot and provided an appropriate frequency hopping pattern.

    摘要翻译: 本发明提供适合于通过解耦合时隙分配和跳频图案分配的最小干扰动态信道分配使用或其他跳频使用的干扰预测。 特别地,基于在整个传输频带或传输频带中的预定频率范围内执行的聚合干扰测量来选择最少干扰的时隙。 给用户分配最少的干扰时隙并提供适当的跳频模式。