COMMUNICATIONS SYSTEM AND METHOD OF ADMINISTERING CONNECTIONS THEREIN

    公开(公告)号:CA2380447A1

    公开(公告)日:2001-12-06

    申请号:CA2380447

    申请日:2001-05-25

    Applicant: MOTOROLA INC

    Abstract: A communication system (10, 68) includes a plurality of different, spectrall y separated air-interfaces providing different services from co-located base sites (70-76). One of these air-interfaces, which may be CDMA, operates a universal frequency-re-use pattern across multiple cells (80-88, 90), wherea s other air-interfaces, such as GSM, have carrier frequencies that a cell re-u se pattern. A subscriber unit (12-16) within the system (10-68) monitors an interference environment and path loss of at least some of the various different services to infer propagation conditions that are likely to be experienced within a spread spectrum service supported by the universal frequency re-use pattern. Armed with an assessment of fade (82-86) condition within the system as a whole, implied by time and path loss from broadcast signals from different services, the subscriber unit can regulate and contro l its power transmission. Spread spectrum communication to a distant base station can be safe in the knowledge that high power transmissions from the subscriber are subject to deep fade when viewed by near-in base sites. Near- far problems associated with high power transmissions to near-in base sites can therefore be mitigated based on a level of confidence that is found in t he fade condition determined bypath loss in services ancillary to the spread spectrum service.

    RADIO ACCESS TRAFFIC MANAGEMENT
    4.
    发明申请
    RADIO ACCESS TRAFFIC MANAGEMENT 审中-公开
    无线接入业务管理

    公开(公告)号:WO0201892A3

    公开(公告)日:2002-05-16

    申请号:PCT/EP0107176

    申请日:2001-06-25

    CPC classification number: H04W36/30 H04W36/0083 H04W48/06

    Abstract: Overloaded base stations (2,3,4) in a cellular communications network are moved down in the active sets of mobile terminals (1) by applying an offset to the received pilot power estimates. An overloaded base station will transmit a high offset value to a terminal (1), causing it to be moved down in the active set, thereby discouraging the terminal from requesting access or handover to such base station. The invention has the advantage over known cell breathing techniques in that it does not reduce cell coverage.

    Abstract translation: 通过对所接收的导频功率估计施加偏移量,蜂窝通信网络中的过载基站(2,3,4)在有效移动终端集合(1)中向下移动。 过载基站将向终端(1)发送高偏移值,使其在有效集合中向下移动,由此阻止终端请求接入或切换到这样的基站。 本发明具有优于已知的细胞呼吸技术的优点,因为它不减少细胞覆盖。

    COMMUNICATIONS SYSTEM AND METHOD OF ADMINISTERING CONNECTIONS THEREIN
    5.
    发明申请
    COMMUNICATIONS SYSTEM AND METHOD OF ADMINISTERING CONNECTIONS THEREIN 审中-公开
    通信系统及其连接方法

    公开(公告)号:WO0193454A3

    公开(公告)日:2003-04-17

    申请号:PCT/EP0106003

    申请日:2001-05-25

    CPC classification number: H04W52/24 H04W16/14 H04W24/00 H04W52/16 H04W52/223

    Abstract: A communication system (10, 68) includes a plurality of different, spectrally separated air-interfaces providing different services from co-located base sites (70-76). One of these air-interfaces, which may be CDMA, operates a universal frequency-re-use pattern across multiple cells (80-88, 90), whereas other air-interfaces, such as GSM, have carrier frequencies that a cell re-use pattern. A subscriber unit (12-16) within the system (10-68) monitors an interference environment and path loss of at least some of the various different services to infer propagation conditions that are likely to be experienced within a spread spectrum service supported by the universal frequency re-use pattern. Armed with an assessment of fade (82-86) condition within the system as a whole, implied by time and path loss from broadcast signals from different services, the subscriber unit can regulate and control its power transmission. Spread spectrum communication to a distant base station can be safe in the knowledge that high power transmissions from the subscriber are subject to deep fade when viewed by near-in base sites. Near-far problems associated with high power transmissions to near-in base sites can therefore be mitigated based on a level of confidence that is found in the fade condition determined by path loss in services ancillary to the spread spectrum service.

    Abstract translation: 通信系统(10,68)包括多个不同的频谱分离的空中接口,提供与同位置基站(70-76)的不同服务。 这些空中接口中的一个可以是CDMA,在多个小区(80-88,90)之间运行通用频率重用模式,而诸如GSM的其它空中接口具有小区重新连接的载波频率, 使用模式。 系统(10-68)内的用户单元(12-16)监视各种不同服务中的至少一些的干扰环境和路径损耗,以推断在扩展频谱服务中可能经历的传播条件 通用频率重用模式。 对整个系统中的褪色(82-86)状况进行评估,由来自不同业务的广播信号的时间和路径损耗所暗示的,用户单元可以调节和控制其功率传输。 知道来自用户的高功率传输在靠近基站观察时会受到深度衰落的信息,因此向远程基站进行扩频通信是安全的。 因此,可以基于在辅助扩频业务的业务中由路径损耗确定的衰落条件中发现的置信水平来减轻与向近基站的高功率传输相关的近远问题。

    ADAPTIVE ANTENNA ARRAY
    6.
    发明申请
    ADAPTIVE ANTENNA ARRAY 审中-公开
    自适应天线阵列

    公开(公告)号:WO0195427A3

    公开(公告)日:2002-04-04

    申请号:PCT/EP0106440

    申请日:2001-06-05

    Inventor: OWEN RAY

    CPC classification number: H04B7/0602 G01S3/46 H01Q3/2605

    Abstract: An adaptive antenna array (14) includes a multiplicity of antenna elements (12a-12k, 48a-48k) responsive to uplink communications (16a-16k) and arranged to support directional-orientated downlink communication to subscriber units (18). The adaptive antenna array (14) is operationally responsive to a signal processor (28) that co-operates with direction of arrival estimation logic (36) to assess an angle of arrival of uplink communications incident to the array. To avoid inter-cell interference, especially during early stages of a call, the signal processor operates to ensure that a wide area downlink beam (108) is provided for a downlink path to an addressed subscriber unit. With time and/or with reported (68,84) downlink quality of service (QoS) metrics, the signal processor (28) regulates (74, 92, 96) a width of the downlink beam by altering the number of antenna elements used to support the downlink beam, thereby altering the downlink beam aperture. Generally, with time, more antenna elements (92) are used and so the beam is narrowed, although in-call fluctuations in downlink quality of service are dynamically addressed.

    Abstract translation: 自适应天线阵列(14)包括响应于上行链路通信(16a-16k)的多个天线元件(12a-12k,48a-48k),并且被布置为向用户单元(18)支持面向方向的下行链路通信。 自适应天线阵列(14)可操作地响应与到达方向估计逻辑(36)协作的信号处理器(28),以评估入射到阵列的上行链路通信的到达角度。 为了避免小区间干扰,特别是在呼叫的早期阶段,信号处理器操作,以确保提供广域下行链路波束(108)用于到寻址用户单元的下行链路路径。 随着时间和/或报告(68,84)下行链路服务质量(QoS)度量,信号处理器(28)通过改变下行链路波束的宽度来调节下行链路波束的宽度(74,92,96) 支持下行链路波束,从而改变下行链路波束的孔径。 通常,随着时间的推移,使用更多的天线元件(92),因此波束变窄,尽管在下行链路服务质量中的呼叫波动被动态地寻址。

    ADAPTIVE ANTENNA ARRAY
    7.
    发明专利

    公开(公告)号:CA2411437C

    公开(公告)日:2009-01-06

    申请号:CA2411437

    申请日:2001-06-05

    Applicant: MOTOROLA INC

    Inventor: OWEN RAY

    Abstract: An adaptive antenna array (14) includes a multiplicity of antenna elements (12a-12k, 48a-48k) responsive to uplink communications (16a-16k) and arrange d to support directional-orientated downlink communication to subscriber units (18). The adaptive antenna array (14) is operationally responsive to a signa l processor (28) that co-operates with direction of arrival estimation logic (36) to assess an angle of arrival of uplink communications incident to the array. To avoid inter-cell interference, especially during early stages of a call, the signal processor operates to ensure that a wide area downlink beam (108) is provided for a downlink path to an addressed subscriber unit. With time and/or with reported (68,84) downlink quality of service (QoS) metrics, the signal processor (28) regulates (74, 92, 96) a width of the downlink bea m by altering the number of antenna elements used to support the downlink beam , thereby altering the downlink beam aperture. Generally, with time, more antenna elements (92) are used and so the beam is narrowed, although in-call fluctuations in downlink quality of service are dynamically addressed.

    Adaptive antenna array and method of controlling operation thereof

    公开(公告)号:AU6395301A

    公开(公告)日:2001-12-17

    申请号:AU6395301

    申请日:2001-06-05

    Applicant: MOTOROLA INC

    Inventor: OWEN RAY

    Abstract: An adaptive antenna array (14) includes a multiplicity of antenna elements (12a-12k, 48a-48k) responsive to uplink communications (16a-16k) and arranged to support directional-orientated downlink communication to subscriber units (18). The adaptive antenna array (14) is operationally responsive to a signal processor (28) that co-operates with direction of arrival estimation logic (36) to assess an angle of arrival of uplink communications incident to the array. To avoid inter-cell interference, especially during early stages of a call, the signal processor operates to ensure that a wide area downlink beam (108) is provided for a downlink path to an addressed subscriber unit. With time and/or with reported (68, 84) downlink quality of service (QoS) metrics, the signal processor (28) regulates (74, 92, 96) a width of the downlink beam by altering the number of antenna elements used to support the downlink beam, thereby altering the downlink beam aperture. Generally, with time, more antenna elements (92) are used and so the beam is narrowed, although in-call fluctuations in downlink quality of service are dynamically addressed by the signal processor (28) by either narrowing or broadening the width of the downlink beam by respectively switching antenna elements (12a-12k, 48a-48k) into (92) or out (96) of the adaptive antenna array (14), as shown in FIGs. 3a and 3b.

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