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    • 90. 发明授权
    • Access point multi-level transmission power control supporting periodic high power level transmissions
    • 接入点多级传输功率控制支持周期性高功率电平传输
    • US07653386B2
    • 2010-01-26
    • US11429559
    • 2006-05-05
    • James D. Bennett
    • James D. Bennett
    • H04W4/00
    • H04W52/322H04N21/4126H04W24/00H04W28/10H04W48/08H04W48/16H04W52/16H04W52/18H04W52/283H04W52/34H04W92/10Y02D70/122Y02D70/124Y02D70/14
    • A wireless access point and multiple wireless terminals exchange utilization, status, mobility and reception characteristics. Each wireless terminal generates reception characteristics based on transmissions received from the wireless access point and from other devices in the network. In one operating mode, the characteristics gathered by the wireless devices are forwarded to the wireless access point, and, based on all received characteristics, the wireless access point selects its own transmission power for different types of the transmissions. The access point transmits to client devices at reduced power levels, however, periodic beacons and other selected non-beacon transmissions are transmitted at a high power level to facilitate association by other client devices. In another mode, all characteristics are exchanged between every wireless terminal and the access point so that each can independently or cooperatively make transmission power control decisions. The utilization, status, mobility, and reception characteristics include received signal strength, error rates, estimated battery life, availability of unlimited power, active versus sleep mode ratios, anticipated bandwidth utilization, coding schemes available, deterministic/non-deterministic requirements, encryption and security requirements, quality of service requirements, position, velocity, stationary status, etc. Gathering of such characteristics involves both retrieval of preset parameters from memory and generating parameters based on received transmissions (including test packets).
    • 无线接入点和多个无线终端交换利用,状态,移动性和接收特性。 每个无线终端基于从无线接入点和网络中的其他设备接收的传输产生接收特性。 在一种操作模式中,由无线设备收集的特性被转发到无线接入点,并且基于所有接收到的特性,无线接入点为不同类型的传输选择其自身的传输功率。 接入点以降低的功率电平发送到客户端设备,然而,周期性信标和其他选择的非信标传输以高功率电平被传输以便于其他客户端设备的关联。 在另一种模式中,在每个无线终端和接入点之间交换所有特征,使得每一个可以独立地或协同地进行发射功率控制决定。 利用率,状态,移动性和接收特性包括接收信号强度,误码率,估计的电池寿命,无限功率的可用性,主动与睡眠模式比,预期带宽利用率,可用的编码方案,确定性/非确定性要求,加密和 安全要求,服务质量要求,位置,速度,稳定状态等。这些特征的收集涉及从存储器检索预置参数并基于接收到的传输(包括测试分组)生成参数。