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    • 4. 发明公开
    • Spot beam hopping packet scheduler system
    • 系统软件Zuteilung von PaketenfürdieÜbertragungüberSatellitenstrahlenbündel
    • EP1231743A2
    • 2002-08-14
    • EP02003325.4
    • 2002-02-13
    • The Boeing Company
    • Reddy, Naveen S.
    • H04L12/56H04B7/204H04Q11/04
    • H04L47/623H04B7/2041H04L47/14H04L47/50H04L49/90H04L49/901H04Q2213/131H04Q2213/13103H04Q2213/13296H04Q2213/13333
    • A spot beam hopping packet scheduler system (18) performs efficient switching over links such as hopped spot beams which compete with each other for physical properties and resources. The spot beam hopping packet scheduler system (18) provides statistical weighting and prioritization capabilities while accommodating resource competing links such as wireless hopped spot beams. The spot beam hopping packet scheduler system (18) receives downlink cell ID and packet burst memory pointers from a burst assembly/congestion controller (28) and provides packet burst information to antenna controller and modulators (26). The spot beam hopping packet scheduler system (18) includes a downlink queue (20) that is coupled to the burst assembly/congestion controller (28) and receives the downlink cell ID and packet burst memory pointers. A cache (22) is coupled to the downlink queue (20) and receives and stores data from the downlink queue (20). A downlink search controller (21) is coupled to the downlink queue (20) and the cache (22) and includes control logic operative to search the downlink queue (20) for packet bursts, and fill any empty cache slots with appropriate data from said downlink queue (20). A cache search controller is coupled to the cache (22) and includes control logic operative to search the cache (22) in a pre-configured weighted order for compatible packet bursts based on beam angle interference, beam amplifier power and aggregate target power.
    • 点波束分组调度器系统(18)对诸如跳频点波束的链路进行有效的切换,所述跳频点波束彼此竞争用于物理属性和资源。 点波束分组调度器系统(18)提供统计加权和优先化能力,同时容纳诸如无线跳频点波束之类的资源竞争链路。 点波束分组调度器系统(18)从突发组合/拥塞控制器(28)接收下行链路小区ID和分组突发存储器指针,并向天线控制器和调制器(26)提供分组突发信息。 点波束分组调度器系统(18)包括耦合到突发组合/拥塞控制器(28)并且接收下行链路小区ID和分组突发存储器指针的下行链路队列(20)。 高速缓存(22)耦合到下行链路队列(20)并且接收并存储来自下行链路队列(20)的数据。 下行链路搜索控制器(21)耦合到下行链路队列(20)和高速缓存(22),并且包括可操作以搜索下行链路队列(20)以进行分组突发的控制逻辑,并且用适当的数据从所述 下行队列(20)。 高速缓存搜索控制器耦合到高速缓存(22),并且包括控制逻辑,其可操作以基于波束角干扰,波束放大器功率和聚合目标功率,以预配置的加权顺序搜索用于兼容分组突发的高速缓存(22)。
    • 8. 发明公开
    • Switch matrix apparatus for satellite-switched TDMA system or the like
    • Schaltmatrixfürein SS-TDMA-System oder dgl。
    • EP0033149A2
    • 1981-08-05
    • EP81100511.5
    • 1981-01-23
    • NEC CORPORATION
    • Saga, RyokichiTakimoto, Yukio
    • H04B7/185H03K17/62H04N5/22
    • H03K17/62H04B7/2046H04Q11/04H04Q2213/1302H04Q2213/1304H04Q2213/13291H04Q2213/13292H04Q2213/13306H04Q2213/13333Y02D70/446
    • The switch matrix apparatus may be used, for example, in SS-TDMA or FDMA systems in relay stations where a plurality of stations carry on the communications with each other arbitrarily via the relay stations. This switch matrix apparatus (4) comprises M distributing means (201-20M) for distributing an input signal applied thereto into N signals wherein M and N are positive integers; N combining means (301-30N) for combining the respective distributing outputs of said M distributing means (201-20M) to a signal, respectively, said N combining means (301-30N) respectively including a current combining means using resistances and a low input impedance circuit to be connected to the output of said current combining means; and M x N switching circuit means (11 to MN) connected respectively between the outputs of said M distributing means (201-20M) and the inputs of said N combining means (301-30N), said M x N switching circuit means (11 to MN) respectively having a switch means with a high input impedance and a low output impedance. In this switch matrix apparatus the impedance matching among circuits is easily achieved even if there are long connection distances between the circuits; the impedance matching may be unnecessary if the distances are short with small losses caused thereby. Furthermore, the switch matrix apparatus may have high speed, compact, light weight and low power consumption characteristics, and flexibility against the change in the number of the input/output signals.
    • 例如,交换矩阵装置可以用在中继站中的SS-TDMA或FDMA系统中,其中多个站经由中继站任意地进行通信。 该开关矩阵装置(4)包括用于将施加到其上的输入信号分配成N个信号的M个分配装置(201-20M),其中M和N是正整数; N组合装置(301-30N),用于分别将所述M个分配装置(201-20M)的各个分配输出与信号分别组合,所述N个组合装置(301-30N)分别包括使用电阻和低电平的电流组合装置 输入阻抗电路,连接到所述当前组合装置的输出; 以及分别连接在所述M个分配装置(201-20M)的输出端和所述N个组合装置(301-30N)的输入端之间的M×N个切换电路装置(11至MN),所述M×N个切换电路装置 到MN),分别具有高输入阻抗和低输出阻抗的开关装置。 在该开关矩阵装置中,即使在电路之间存在较长的连接距离,也容易实现电路之间的阻抗匹配; 如果距离短而导致由此引起的小损失,则阻抗匹配可能是不必要的。 此外,开关矩阵装置可以具有高速度,紧凑,重量轻和低功耗特性,以及抵抗输入/输出信号数量变化的灵活性。