CN105519208B - 用于估计无线设备的传送功率的方法和装置 - Google Patents

用于估计无线设备的传送功率的方法和装置 Download PDF

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CN105519208B
CN105519208B CN201480036169.0A CN201480036169A CN105519208B CN 105519208 B CN105519208 B CN 105519208B CN 201480036169 A CN201480036169 A CN 201480036169A CN 105519208 B CN105519208 B CN 105519208B
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CN105519208A (zh
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迈克尔·E·拉塞尔
阿米特库马尔·巴拉尔
阿密特·贾殷
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/247—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters where the output power of a terminal is based on a path parameter sent by another terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/22—TPC being performed according to specific parameters taking into account previous information or commands
    • H04W52/226—TPC being performed according to specific parameters taking into account previous information or commands using past references to control power, e.g. look-up-table
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/101—Monitoring; Testing of transmitters for measurement of specific parameters of the transmitter or components thereof
    • H04B17/102—Power radiated at antenna
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/10—Open loop power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/38—TPC being performed in particular situations
    • H04W52/50—TPC being performed in particular situations at the moment of starting communication in a multiple access environment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/38—TPC being performed in particular situations
    • H04W52/383—TPC being performed in particular situations power control in peer-to-peer links
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transmitters (AREA)

Abstract

本公开给出了一种用于对路径损失进行追踪的方法，其中监视设备(100)向报告设备(106)发出一系列功率步幅命令和传送功率请求，响应于该传送功率请求而接收传送功率数据，并且创建将该功率步幅命令中的步幅的数目(例如，增大或减小的步幅的数目)与所报告的传送功率进行映射的数据结构(105)(例如表)。该过程在该监视设备(100)和报告设备(106)之间的初始连接期间执行。

Description

用于估计无线设备的传送功率的方法和装置
技术领域
本公开一般地涉及无线通信，更具体地涉及估计无线设备的传送功率。
背景技术
随着智能电话在蜂窝市场上变为主流，各公司开始销售越来越复杂的无线配件。诸如耳机、腕表、眼睛和其它可穿戴设备之类的这些配件被设计为以安全方式连接至智能电话或其它配件。该设备使用诸如蓝牙或IEEE 802.11标准之一的一个或多个公知方法互相进行通信。
在配件与智能电话的通信期间，通常想要将所接收的信号的强度(如每个设备所感知到的)保持在特定的功率范围之内，所述特定的功率范围有时被称作黄金接收功率范围或黄金窗口。该范围的上限和下限有所变化，但是在一个实施方式中，该范围为从-60dBm至-40dBm。为此，设备能够互相发出功率控制命令以指示它们的传送功率是否应当增大或减小。
在诸如蓝牙的一些架构中，功率控制为开环，其中当一个设备告知另一个设备要改变其传送功率时，作出改变的设备不关于其传送功率实际如何提供反馈。此外，作出改变的设备不必然以相等大小的功率步幅如此操作，而是在某个范围内作出改变。
许多无线通信方案采用划分的主机-控制器架构，其中主机处理器(通常为应用处理器(AP))执行更为复杂、功率密集的任务，而无线电控制器处理物理通信以及与无线电链路相关的低级任务。AP和无线电控制器可能被整合到相同的硬件封装之中，但是即使这样二者之间也可能存在着逻辑分隔。
能够采用该划分架构以使得功耗最小化。为此，系统设计者尝试向下向无线电控制器推送尽可能多的任务。然而，关于这能够完成多少却存在着限制。在一些情况下，该限制是无线电控制器的能力的结果。无线电控制器趋向于具有比主机处理器小的处理功率并且因此不太能够执行某些计算，诸如涉及到浮点数的那些计算。此外，无线电控制器通常在开放系统互连(OSI)意义中的较低层进行操作并且因此被防止执行某些任务。
附图说明
虽然所附权利要求以特定内容阐述了该技术的特征，但是这些技术可以从以下结合附图所进行的详细描述而得到最佳理解，其中：
图1A图示了根据一个实施例的无线设备。
图1B图示了根据另一个实施例的无线设备。
图2图示了根据一个实施例的其中主机处理器构建将传送功率映射至功率步幅的数据结构的过程。
图3图示了一个实施例中的无线电控制器将路径损失数值与触发点进行比较的过程。
具体实施方式
本公开给出了一种用于估计传送功率的方法，其中第一设备向第二设备发出一系列功率控制命令和传送功率请求，响应于该传送功率请求而接收传送功率数据，并且创建将该功率控制命令中的功率步幅(例如，增大或减小的步幅的数目)与所报告的传送功率进行映射的数据结构(例如表)。在一个实施例中，该第一和第二设备在它们的初始连接期间执行该过程。
在一个实施例中，第一设备的主机处理器构建数据结构。在完成该数据结构之后，主机处理器将该数据结构提供至无线电控制器。自此时起，无线电控制器能够保持对第二设备的传送功率的追踪而无需唤醒主机处理器，除非发生了触发条件(例如，设备之间的路径损失达到了预定阈值)。此外，一旦第一设备的主机处理器已经将功率步幅映射至所报告的传送功率，第一设备就无需为了重复请求传送功率而唤醒第二设备。
在替选实施例中，第一设备的低功率控制器(即，不是无线电控制器)监视第一设备的无线电控制器所发出的功率步幅命令，执行对第二设备的传送功率保持追踪的任务，并且在某些触发条件下唤醒主机处理器。
转向附图，其中同样的附图标记指代同样的要素，以下描述是基于权利要求的实施例而并不应当被理解为关于在这里未明确描述的替选实施例而对权利要求加以限制。
图1A图示了一对无线通信设备。为了描述的清楚，每个设备将通过其在执行本公开中所给出的方法时所扮演的角色而被加以引用。这对设备包括监视设备100和报告设备106。在实践中，任一个设备都能够作为监视设备或报告设备。实际上，每个设备都可以同时作为报告设备和监视设备。
仍然参考图1A，监视设备100包括主机处理器102、通信地链接至主机处理器102的无线电控制器104以及电耦合至无线电控制器104的天线101。在一个实施例中，监视设备100是无线配件，主机处理器102是在蓝牙主机堆栈上运行的应用处理器，并且无线电控制器104包括蓝牙无线电和蓝牙控制器。在该实施例中，蓝牙控制器运行蓝牙控制器堆栈。无线电控制器104也可以使用其它类型的控制器和无线电来实施，诸如802.11控制器和无线电。监视设备100可以是任意无线设备，包括无线耳机、无线腕表或智能电话。
主机处理器102包括其中存储数据结构105的存储器103。数据结构105的功能和用途将在下面进一步详细描述。无线电控制器104还包括其中存储数据结构105的副本的存储器107。如同主机处理器存储器103的数据结构105，无线电控制器存储器107的数据结构105的功能和用途将在下面进一步详细描述。存储器107还存储数据结构115，其中存储了触发点的集合。这些触发点的用途将在下面进一步详细描述。
主机处理器102和无线电控制器104经由接口127互相通信。在蓝牙实施方式中，接口127是主机-控制器接口(HCI)。
再次参考图1A，报告设备106包括主机处理器108，通信地耦合至主机处理器108的无线电控制器110、以及电耦合至无线电控制器110的天线113。在一个实施例中，报告设备106是智能电话，主机处理108是运行蓝牙主机堆栈的应用处理器，并且无线电控制器110包括蓝牙无线电以及运行蓝牙控制器堆栈的蓝牙控制器。无线电控制器110也可以使用其它类型的控制器和无线电来实施，诸如802.11控制器和无线电。然而，报告设备106可以是任意的无线设备，包括诸如耳机或无线腕表之类的无线配件。
报告设备106的主机处理器108和无线电控制器110经由接口129互相通信。在蓝牙实施方式中，接口129是主机-控制器接口(HCI)。
图1B示出了监视设备100的替选实施方式。在该实施方式中，监视设备100进一步包括低功率处理器111。低功率处理器111电耦合至无线电控制器104和主机处理器102。低功率处理器111包括存储器117，其包含数据结构105和数据结构115的副本。在一个实施方式中，低功率处理器111耦合至无线电控制器104的调试端口109。低功率处理器111在正常操作期间消耗比无线电控制器104少的功率。
在操作期间，监视设备100和报告设备106以至少两种不同的方式进行通信—主机对主机和无线电对无线电。监视设备100通过主机对主机通信获得报告设备106的传送功率。当以蓝牙实施时，监视设备100使用Tx功率服务来获得该信息。
在一个实施例中，为了命令报告设备106增大或减小其传送功率，监视设备100不需要与报告设备106执行主机对主机通信。相反，监视设备可以依赖于无线电对无线电通信。当以蓝牙实施时，监视设备100的无线电控制器104能够直接向报告设备106的无线电控制器110发出功率控制命令—例如，LMP_incr_power_req、LMP_decr_power_req、LMP_nax_power和LMP_min_power。
图1A示出了监视设备100如何使用主机对主机通信来获得报告设备106的传送功率的示例。监视设备100的主机处理器102形成请求，对该请求进行封装，并且将经封装的请求提供至无线电控制器104(箭头112)。无线电控制器104将经封装的请求无线传送至报告设备106的无线电控制器110(箭头114)。无线电控制器110将该经封装的请求提供至主机处理器108(箭头116)。
响应于该请求，主机处理器108从无线电控制器110请求传送功率(箭头118)。无线电控制器110通过将其传送功率提供至主机处理器108来对该请求作出响应(箭头120)。作为响应，主机处理器108形成传送功率报告，对其进行封装，并且将该报告提供至无线电控制器110(箭头122)。无线电控制器110将该报告无线传送至监视设备100的无线电控制器104(箭头124)。无线电控制器104将该经封装的报告提供至主机处理器102(箭头126)。
图1A示出了根据本公开的一个实施例的监视设备100如何命令报告设备106改变(增大或减小)其传送功率或者以其最大或最小功率进行传送的示例。监视设备100的无线电控制器104在主机处理器102的控制下向报告设备的无线电控制器110传送功率控制命令(箭头125)。该功率控制命令包括指示报告设备106应当将其传送功率增大或减小的步幅的数目的数据。替选地，该功率控制命令指示报告设备106应当以其最大功率进行传送，或者指示报告设备106应当以其最小功率进行传送。无线电控制器110通过增大或减小其传送功率或者通过以其最大或最小功率进行传送(取决于使用哪一个命令)来对该功率控制命令做出响应。
每个功率步幅的大小可能不相同。例如，从功率步幅1减小至功率步幅2的大小可以比从功率步幅2减小至功率步幅3的小。在蓝牙中，功率步幅可以处于2dB和8dB之间。
再次参考图1A，报告设备106的主机处理器108与无线电控制器110之间的来回通信(箭头116、118、120和122)消耗功率并且在计算上是昂贵的。因此，替代必须不断地请求报告设备的传送功率(例如，出于确定路径损失的目的)，监视设备100发出一系列功率控制命令以命令报告设备106步进通过其传送功率范围并且在每一步幅报告其传送功率。监视设备100然后构建数据结构105(例如表)，其将(1)功率步幅命令的功率步幅映射至(2)报告设备106所报告的传送功率。监视设备100还可以测量其在每一步幅从报告设备106所接收到的信号的功率(例如，接收信号强度指示(RSSI))，并且将该数据包括在数据结构105中。
在一个实施例中，监视设备100在其最初建立与报告设备106的连接时—例如在监视设备100启动或者发起其与报告设备之间的无线连接时—构建数据结构105。一旦监视设备100已经完成了数据结构105，其随后就能够从功率步幅命令的功率步幅来估计报告设备106的传送功率(并且因此估计设备之间的路径损失和距离)。
在另一个实施例中，一旦其创建了数据结构105，监视设备100就将数据结构105连同报告设备106的设备标识符一起存储在存储器103中。随后，当100和106下一次连接时，监视设备100能够从存储器取回所存储的数据结构(其与报告设备106相关联)。
在又另一个实施例中，监视设备100能够在预定时间段之后丢弃数据结构105，并且重新构建它从而确保数据结构105内所包含的数据是当前的。
根据本公开的一个实施例，主机处理器102构建数据结构105并且将其副本提供至无线电控制器104。表1示出了可以如何实施数据结构105的示例。
表1
无线电控制器104对该表格中的哪一行能够在任意给定时间进行应用保持追踪。
主机处理器102还为无线电控制器104(或者低功率处理器111)给出触发条件的集合，无线电控制器104或低功率处理器111将其存储在数据结构115中。表2示出了触发条件的集合的示例：
表2
在无线电控制器104向报告设备106的无线电控制器110发出功率步幅命令时，无线电控制器104保持对报告设备106当前进行操作的功率步幅的追踪。因此，当监视设备100需要确定报告设备106的传送功率时，无线电控制器104使用(已知的)当前功率步幅对数据结构105(例如表1)进行参照(例如执行查找)，并且确定当前的传送功率。无线电控制器104可以然后使用当前的传送功率计算监视设备100和报告设备106之间的路径损失。在一个实施例中，无线电控制器104测量其从报告设备106的无线电控制器110所接收的信号的当前强度(例如RSSI)并且从该传送功率中减去该值。
在图1B的替选实施例中，主机处理器102经由主机处理器102上的总线将数据结构105和触发条件提供至低功率处理器111。低功率处理器111经由无线电控制器104的调试端口109监视功率控制命令。低功率处理器111将触发条件存储在其存储器117的数据结构115中。否则，低功率处理器111确定报告设备106的传送功率，估计路径损失，并且以与以上针对无线电控制器104所描述的相同方式在触发条件时唤醒主机处理器102。
图2图示了根据一个实施例的其中监视设备100构建数据结构的过程，该数据结构将报告的传送功率水平与RSSI水平相关联。监视设备100和报告设备106以上文中结合图1A所描述的方式进行通信。该示例使用表1作为数据结构并且使用表2的值作为触发点。
在框202，无线电控制器104(在主机处理器102的控制下)向报告设备106的无线电控制器110发送功率控制命令(例如，LMP_max_power)。该功率控制命令指示无线电控制器110应当以其最大功率进行传送。作为响应，报告设备106的无线电控制器110以其最大功率进行传送并且利用消息“处于最大功率”将该情况报告回监视设备102的无线电控制器104。在框204，监视设备100的主机处理器102向报告设备106的主机处理器108发送报告其传送功率的请求(例如，使用TX功率服务)。作为响应，在框206，主机处理器108从无线电控制器110获得传送功率并且将该传送功率报告回监视设备100的主机处理器102(使用以上结合图1A所描述的过程)。在该示例中，所报告的功率为10dBm。可选地，在框208，监视设备100的无线电控制器104测量在框206所接收的传送功率报告的信号功率(例如，RSSI)并且将所测量的信号功率提供至主机处理器102。
在框210，监视设备100的主机处理器102(在数据结构105内)将所报告的传送功率映射至最大功率。在这种情况下，功率步幅为0，意味着传送功率处于其在该表中的起始点。在其它实施方式中，功率步幅0映射至报告设备106的最小传送功率。主机处理器102还可以将传送功率和功率步幅映射至从报告设备106所接收到的信号的RSSI。
在框212，监视设备100通过令其无线电控制器104向报告设备106发送指示报告设备106应当将其传送功率减小一个功率步幅的功率控制命令来开始传送和接收功率数据映射的第二次迭代。作为响应，报告设备106的无线电控制器110以递减的功率水平(例如，以低于其最大传送功率的5dB)进行传送并且向监视设备100的无线电控制器104指示该情况(改变一步幅)。在框214，监视设备106的主机处理器102向报告设备106的主机处理器108发送报告该报告设备的传送功率的请求。主机处理器108如以上所描述地获得传送功率并且将该传送功率报告给监视设备100的主机处理器102，主机处理器102在框216对其进行接收。在该示例中，所报告的传送功率为5dBm(表1中的第二行)。可选地，在框218，监视设备100的无线电控制器104测量在框216所接收到的传送功率报告的信号功率并且将所测量的信号功率提供给主机处理器102。在框220，主机处理器102(在数据结构105内)将所报告的传送功率与该功率控制命令的功率步幅进行映射。在这种情况下，功率步幅为1。主机处理器102还可以将该传送功率和功率步幅映射至从报告设备106所接收到的信号的RSSI。
以上过程继续进行直至报告设备已经达到其最小传送功率。在此时，数据结构105被认为是完整的。在其它实施方式中，监视设备100通过令其无线电控制器104以最小功率启动报告设备106的无线电控制器110并且然后从低至高逐步进通过无线电控制器110的功率范围来构建数据结构105。此外，监视设备100可以针对多个调制方案通过图2的过程来运行报告设备106。例如，图2的过程能够针对二进制相移键控(BPSK)重复一次并且针对正交相移键控(QPSK)重复一次。
一旦监视设备100的主机处理器102已经完成了数据结构105，其就将该数据结构(例如，以表的形式)提供至无线电控制器104。无线电控制器104然后能够使用该数据结构来确定报告设备106的当前传送功率(例如，无线电控制器110的当前传送功率)。例如，一旦该表以以上所描述的方式完成(从最大功率下降至最小功率)，无线电控制器104就将认为报告设备106的当前传送功率为-5dBm(表1的最后一行)。如果无线电控制器104向无线电控制器110发出功率控制命令—例如，将功率增大2个步幅，则无线电控制器104认为当前传送功率为5dBm(表1的第二行)。
主机处理器102还向无线电控制器104(或低功率处理器111)提供触发条件，无线电控制器104(或低功率处理器111)将其存储在数据结构115中。该触发条件可以以许多方式来表达，包括作为路径损失或所计算的距离。无线电控制器104监视该触发条件，并且在触发条件被满足的情况下执行如表2中所示的动作(例如，唤醒主机处理器102)。
在一个实施例中，主机处理器102针对距离集合中的每个距离预先计算路径损失。主机处理器102然后将该路径损失值作为触发点提供至无线电控制器104。例如，监视设备100和报告设备106之间的路径损失可以被表达为：
路径损失＝20log10(d)+20log10(f)–27.6
其中，d是两个设备之间的距离(以米为单位)，并且f是无线信号的频率(以兆赫为单位)。在该实施例中，主机处理器102使用以上的等式针对多个距离—例如3m、10m和30m—计算路径损失。无线电控制器104利用路径损失值扩增数据结构115。表2示出了预先计算的路径损失值以及它们能够被映射到的距离的示例。因此，无线电控制器104无需从路径损失值来计算距离(这样的计算涉及到对数和浮点数值，这更适于由主机处理器102来处理)，而是仅需要计算路径损失，而这仅是(无线电控制器104使用数据结构105所估计的)报告设备的传送功率减去所接收到的信号功率(例如，RSSI)。
在无线电控制器104计算路径损失时，其将该值与触发点进行比较。如果该路径损失与触发点相交，则无线电控制器104唤醒主机处理器102并且将该路径损失值给至主机处理器102。作为响应，主机处理器102执行关于监视设备100的功能。例如，参考表2，主机处理器102可以什么都不做，发出警报(例如，扬声器上的可听警报或者发光二极管(LED)闪烁)，发出高度警报(例如，闪烁、振动、生成触觉输出，以及以最大音量从扬声器发出声音)，或者锁定监视设备100(因此要求用户输入个人标识号来访问它)。在一个实施例中，该警报可以被分组为如表2所示的级别。
图3示出了在本公开的一个实施例中监视设备100的无线电控制器104如何监视触发条件并对其作出反应。在框302，无线电控制器104如之前所描述地使用数据结构105估计报告设备106的传送功率，上述数据结构是无线电控制器104先前从主机处理器102所接收的。
在框304，无线电控制器104(或低功率处理器111)通过测量其从报告设备106所接收到的信号的功率，将所测量的所接收信号的功率从所估计的传送功率减去来估计路径损失。在框306，无线电控制器104(或低功率处理器111)将所估计的路径损失与触发值进行比较，如果在判定点308所估计的路径损失达到预定阈值(例如，45dB，其低于表2的第二行)，则无线电控制器104(或低功率处理器111)在框310唤醒主机处理器102。主机处理器102在框312执行某个动作(例如，发出如表2的第二行中的警报)。
无线电控制器104或低功率处理器111可以在无线电控制器104每次测量所接收的信号的功率时—例如在无线电控制器104尝试在正常操作期间将所接收的信号功率保持在黄金窗口之内时—重复该过程。
考虑到本公开的原则可以被应用于其中的许多可能实施例，应当认识到的是，这里关于附图所描述的实施例仅意在是说明性的而并不应当被认为对权利要求的范围加以限制。因此，如这里所描述的技术将所有这样的实施例都预期为可以涵盖于所附权利要求及其等同物的范围之内。

Claims (20)

1.一种用于估计无线设备的传送功率的方法，所述方法包括：
向设备(106)传送指示所述设备要进行传送的功率水平的第一功率控制命令；
发起所述设备(106)报告其传送功率的第一请求；
从所述设备(106)接收响应于所述第一请求的第一报告传送功率；
向所述设备(106)传送指示所述设备要对其传送功率水平进行改变的一个或多个功率步幅的第二功率控制命令；
发起所述设备报告其传送功率的第二请求；
从所述设备接收响应于所述第二请求的第二报告传送功率；
创建数据结构(105)，所述数据结构(105)将所述第一功率控制命令的所指示的功率水平映射至所述第一报告传送功率，以及将所述第二功率控制命令的所述一个或多个功率步幅映射至所述第二报告传送功率，所述数据结构包括路径损失触发条件的集合；
测量从所述设备接收的信号的强度；
基于所述信号的所测量的强度和从所述数据结构参照的所述设备的估计的当前传送功率水平来确定来自所述设备的路径损失；
通过无线电控制器确定所述路径损失是否与所述路径损失触发条件中的一个或多个路径损失触发条件相符；以及
如果所确定的路径损失与所述一个或多个路径损失触发条件相符，则通过所述无线电控制器唤醒主机处理器。
2.根据权利要求1所述的方法，其中，所指示的功率水平是所述设备(106)的最大传送功率。
3.根据权利要求1所述的方法，其中，所指示的功率水平是所述设备(106)的最小传送功率。
4.根据权利要求1所述的方法，进一步包括：
测量从所述设备(106)接收的信号的第一集合的信号功率；
在所述数据结构(105)内将所测量的信号的第一集合的信号功率映射至所指示的功率水平和所述第一报告传送功率；
测量从所述设备(106)接收的信号的第二集合的信号功率；
在所述数据结构(105)内将所测量的信号的第二集合的信号功率映射至所述一个或多个功率步幅和所述第二报告传送功率。
5.根据权利要求1所述的方法，进一步包括对所述数据结构(105)参照所述设备(106)的当前传送功率。
6.根据权利要求1所述的方法，进一步包括：
传送指示所述设备(106)要对其传送功率水平进行改变的一个或多个附加功率步幅的第三功率控制命令；以及
使用所述一个或多个附加功率步幅参照所述数据结构(105)来估计所述设备(106)的当前传送功率水平。
7.根据权利要求6所述的方法，进一步包括：
基于所测量的强度和所估计的当前传送功率水平来估计来自所述设备(106)的路径损失。
8.根据权利要求7所述的方法，进一步包括基于所估计的路径损失来估计到所述设备的距离。
9.根据权利要求1所述的方法，进一步包括：
测量从所述设备(106)接收的信号的功率；
确定所测量的功率处于预定范围之外；
基于所述确定，传送指示所述设备(106)将对其传送功率进行改变的一个或多个附加功率步幅的第三功率控制命令；
参照所述数据结构(105)以基于所述一个或多个附加功率步幅来估计所述设备(106)的当前传送功率水平。
10.根据权利要求1所述的方法，其中：
通过所述无线电控制器向所述设备传送所述第一和第二功率控制命令；以及
主机处理器发起所述第一和第二请求、创建所述数据结构(105)，并且进一步包括将所述数据结构(105)提供至所述无线电控制器。
11.根据权利要求10所述的方法，进一步包括：
通过所述无线电控制器参照所述数据结构(105)以估计所述设备(106)的当前传送功率。
12.根据权利要求11所述的方法，其中：
通过所述无线电控制器测量从所述设备(106)接收的信号的强度；以及
通过所述无线电控制器基于所述信号的所测量的强度和所估计的当前传送功率来确定来自所述设备(106)的路径损失。
13.根据权利要求12所述的方法，进一步包括：
通过所述主机处理器将所述路径损失触发条件的集合提供至所述无线电控制器。
14.一种用于估计无线设备的传送功率的第一设备(100)，所述第一设备包括：
主机处理器；和
无线电控制器，被配置为
参照数据结构(105)来估计第二设备(106)的传送功率；
其中所述数据结构(105)将发送至所述第二设备(106)的功率控制命令的功率步幅映射至所述第二设备(106)的传送功率；
使用所估计的传送功率来计算路径损失；
将所述路径损失与一个或多个触发点进行比较；
基于所述比较来唤醒所述主机处理器；
其中所述主机处理器被配置为
将所述数据结构(105)提供至所述无线电控制器；
向所述无线电控制器提供有关所述触发点的数据；
在被所述无线电控制器唤醒时执行有关所述第一设备(100)的功能。
15.根据权利要求14所述的设备，其中，所述无线电控制器进一步被配置为：
向所述第二设备(106)发出附加功率控制命令；
参照所述数据结构(105)以确定所述附加功率控制命令中所包含的一个或多个功率步幅是否指示所述第二设备(106)的当前传送功率的估计应当被改变；
基于所述确定来改变所述第二设备(106)的当前传送功率的估计。
16.根据权利要求15所述的设备，其中，所述无线电控制器进一步被配置为：
测量从所述第二设备(106)接收的信号的功率；
确定所测量的功率是否落入预定功率范围之内；
基于所述确定，向所述第二设备(106)发出所述附加功率控制命令，所述功率控制命令指示所述第二设备(106)应当将其传送功率改变一个或多个功率步幅。
17.根据权利要求14所述的设备，其中，所述功能是锁定所述第一设备(100)和所述第二设备(106)中的一个或多个。
18.根据权利要求14所述的设备，其中
所述功能是发出警报；
所述警报选自由触觉警报、音频警报和视频显示警报组成的组。
19.一种用于估计无线设备的传送功率的第一设备(100)，所述第一设备包括：
主机处理器；
通信地链接至所述主机处理器的无线电控制器；
通信地链接至所述主机处理器和所述无线电控制器的低功率处理器，其中所述低功率处理器消耗比所述主机处理器和无线电控制器少的功率；
其中所述无线电控制器被配置为：
测量从第二设备(106)接收的信号的功率；
确定所测量的功率是否落入预定功率范围之内；
基于所述确定，向所述第二设备(106)发出功率控制命令，所述功率控制命令指示所述第二设备(106)应当根据所述功率控制命令内所包含的功率步幅来改变其传送功率；
其中所述低功率处理器被配置为：
检测所发出的功率控制命令；
使用所述功率控制命令的功率步幅参照数据结构(105)以估计所述第二设备(106)的传送功率；
其中所述数据结构(105)将发送至所述第二设备(106)的功率控制命令的功率步幅映射至所述第二设备(106)的传送功率；
使用所估计的传送功率来计算值；
将所述值与一个或多个触发点进行比较；
基于所述比较，唤醒所述主机处理器；
其中所述主机处理器被配置为：
创建所述数据结构(105)
将所述数据结构(105)提供至所述低功率处理器；
向所述无线电控制器提供有关所述触发点的数据；
在被所述低功率处理器唤醒时执行有关所述第一设备(100)的功能。
20.根据权利要求19所述的设备，其中，所述值选自由路径损失值、距离和传送功率组成的组。
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