WO2011097984A1 - 无线局域接入网的路由设备以及信号发射方法 - Google Patents

无线局域接入网的路由设备以及信号发射方法 Download PDF

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Publication number
WO2011097984A1
WO2011097984A1 PCT/CN2011/070560 CN2011070560W WO2011097984A1 WO 2011097984 A1 WO2011097984 A1 WO 2011097984A1 CN 2011070560 W CN2011070560 W CN 2011070560W WO 2011097984 A1 WO2011097984 A1 WO 2011097984A1
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WIPO (PCT)
Prior art keywords
power
signal
radio frequency
transmit power
wireless network
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PCT/CN2011/070560
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English (en)
French (fr)
Inventor
赵阳
董希伟
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华为终端有限公司
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Publication date
Application filed by 华为终端有限公司 filed Critical 华为终端有限公司
Priority to JP2012533474A priority Critical patent/JP6014942B2/ja
Priority to ES11741855.8T priority patent/ES2553249T3/es
Priority to EP11741855.8A priority patent/EP2469941B1/en
Publication of WO2011097984A1 publication Critical patent/WO2011097984A1/zh

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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
    • H04W52/28—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission
    • H04W52/288—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission taking into account the usage mode, e.g. hands-free, data transmission, telephone

Definitions

  • the embodiments of the present invention relate to the field of wireless communications technologies, and in particular, to a routing device of a wireless local area access network and a signal transmitting method.
  • a general-purpose wireless routing device such as a wireless routing device for accessing a 3G uplink wireless local area network (WLAN)
  • WLAN wireless local area network
  • One type needs to cover the home, requires a distance of at least 100 meters (open environment), and has a certain ability to penetrate the wall.
  • Such wireless routing equipment consumes a large amount of power and requires external power supply.
  • 3G wireless fixed terminal use that is, transmitting wireless network signals with large power to obtain large coverage
  • Another type of wireless routing equipment is designed to adapt to the needs of portable use, reduce transmit power and use battery power, and such wireless routing devices
  • the wireless network signal is transmitted at a lower power, and its coverage is also small.
  • the embodiment of the invention provides a routing device and a signal transmission method of a wireless local area access network, which are used to solve the problem that the routing device of the wireless local area access network cannot meet the coverage of a large range of coverage and support. A defect in the needs of carrying and using, providing a routing device that can be used both for home coverage and for carrying around.
  • An embodiment of the present invention provides a routing device of a wireless local area access network, including:
  • a radio frequency transmitting module configured to generate a wireless network signal of the wireless local area access network, and adjust a transmit power of the wireless network signal according to the power indication information
  • an antenna module configured to send the wireless network signal according to the adjusted transmit power.
  • the embodiment of the invention provides a signal transmission method, including: Generating a wireless network signal of the wireless local area access network, and adjusting a transmit power of the wireless network signal according to the power indication information;
  • the wireless network signal is sent in accordance with the adjusted transmit power.
  • the routing device and the signal transmitting method of the wireless local area access network provided by the foregoing embodiments of the present invention can adjust the generated wireless network signal according to the power indication information, and can send a wireless network signal according to different transmission powers, which can be adapted to be carried around. The need to use and achieve greater coverage for both use cases.
  • FIG. 1 is a schematic structural diagram of Embodiment 1 of a routing device of a wireless local area access network according to the present invention
  • FIG. 2 is a schematic structural diagram of Embodiment 2 of a routing device of a wireless local area access network according to the present invention
  • FIG. 4 is a schematic structural diagram of Embodiment 3 of a routing device of a wireless local area access network according to the present invention
  • FIG. 4 is a schematic flowchart of a method for transmitting a signal according to an embodiment of the present invention
  • FIG. 6 is a structural diagram of a system according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of calibration of wif i transmit power in a specific embodiment of the present invention.
  • FIG. 8 is a schematic flow chart of a specific embodiment of the present invention.
  • the routing device of the wireless local area access network in the prior art is incapable of satisfying the requirement of supporting both the home coverage and the portable use.
  • the embodiment of the invention provides a routing device of the wireless local area access network.
  • 1 is a schematic structural diagram of Embodiment 1 of a routing device of a wireless local area access network according to the present invention;
  • the device includes a radio frequency transmitting module 11 and an antenna module 12, where the radio frequency transmitting module 11 is configured to generate a wireless network signal of the wireless local area access network, and the wireless information is used according to the power indication information.
  • the transmit power of the network signal is adjusted; the antenna module 12 is configured to transmit the wireless network signal according to the adjusted transmit power.
  • the routing device of the wireless local area access network provided by the foregoing embodiment of the present invention, wherein the radio frequency transmitting module can adjust the wireless network signal according to the power indication information, and can send the wireless network signal according to different transmission powers to adapt to carry around. The need to use and fix settings and achieve greater coverage for both usage scenarios.
  • the radio frequency transmitting module in the foregoing embodiment includes a radio frequency transmitter and a power adjustment module.
  • the radio frequency transmitter 111 is configured to generate a wireless local area access network.
  • the wireless network signal, the power adjustment module may further include a link selection switch 121, a first signal link 122, and a second signal link 123, where the link selection switch 121 is configured to select the radio frequency transmission according to the power indication information.
  • the signal machine 111 is connected to the antenna module 12 via a first signal link 122 or a second signal link 123, and the second signal link 123 described above is provided with a power amplifier.
  • the power adjustment is substantially equivalent to a link selection process, wherein the second signal link is provided with a power amplifier, and the radio frequency transmitter outputs the wireless network signal according to the smaller power, if the wireless The network signal is transmitted through the second signal link, and then amplified by the power amplifier disposed thereon, thereby enabling the antenna module to transmit the wireless network signal according to the larger power; and the wireless network signal passing the first signal link is not amplified.
  • the antenna module can transmit the wireless wireless network signal according to less power. Therefore, in a specific implementation process, the first signal link may be selected for transmission to meet the requirements for portable use, and when a large range of coverage is required, the second signal link is selected for transmission to obtain a larger transmit power and Coverage.
  • a feedback module 14 may be disposed between the radio frequency transmitter 111 and the power amplifier 13, and the feedback module includes a transmit power receiving unit 124 and a transmit power comparison.
  • Table 125 and power adjustment unit 126 where the transmit power receiving unit 124 is configured to receive target transmit power information of the wireless network signal sent by the antenna module; and the power adjustment unit 126 is configured to use the transmit power information according to the target transmit power information from the transmit power comparison table 125.
  • the output power of the corresponding radio frequency transmitter is queried; the transmit power comparison table 125 includes the correspondence between the output power of at least two sets of radio frequency transmitters and the transmit power of the antenna module; the radio frequency transmitter 111 is specifically configured to use the above query.
  • Output The power generates a wireless network signal of the wireless local area access network.
  • the routing device of the wireless local area access network may further include a determining module, where the module is configured to generate a signal by using a second signal link when the routing device is powered by an external power source.
  • the power indication information is used to generate power indication information that is sent by using the first signal link when the routing device is powered by the battery.
  • the judging module judges whether the routing device is powered by an external power source. When the routing device is powered by an external power source, it can generally determine that it is a fixed setting, and can be transmitted through the second signal link, and the second signal A power amplifier on the link can amplify the wireless network signal to increase signal coverage.
  • the first signal link and the second signal link are disposed, and the second signal link is provided with a power amplifier, which can generate a wireless network signal with a large transmission power, and obtain a large coverage. Scope;
  • the first signal link of the power-free amplifier when using the first signal link of the power-free amplifier to transmit signals, it can meet the requirements of portable use, and can effectively reduce the power consumption of the routing device, and then can be powered by the battery.
  • a comparison table including at least a mapping relationship between the output power and the transmission power of the radio frequency transmitter may be further disposed in the second signal link, and the output power of the radio frequency transmitter is adjusted according to different target transmission powers.
  • the device includes a radio frequency transmitter 21, a feedback module 22, an antenna module 23, and a power amplifier 24, wherein the radio frequency transmitter 21, the feedback module 22, and the power amplifier 24 constitute a radio frequency transmitting module, and the above feedback
  • the module 22 may specifically include a transmit power receiving unit 221, a transmit power comparison table 222, and a power adjustment unit 223, where the transmit power receiving unit 221 is configured to receive target transmit power information of the antenna module, that is, the power indication information;
  • the comparison table 222 includes the correspondence between the output power of the at least two sets of radio frequency transmitters and the transmit power of the antenna module.
  • the power adjustment unit 223 is configured to query the corresponding radio frequency transmitter according to the target transmit power information and the transmit power comparison table. Output power.
  • the radio frequency transmitter 21 is configured to generate a wireless network signal of the wireless local area access network according to the queried output power.
  • the foregoing transmit power comparison table may further include a correspondence between output power of at least two sets of radio frequency transmitters, a detection voltage of the power amplifier, and an antenna module transmit power; the power adjustment unit is configured to use the target transmit power information according to the The transmit power comparison table queries corresponding power amplification
  • the detection voltage of the device is the output power of the RF transmitter; the RF transmitter is configured to: when the detected voltage of the queried power amplifier is inconsistent with the detected detection voltage of the power amplifier, according to the query
  • the output power generates a wireless network signal of the wireless local area access network.
  • the difference is that if the detection voltage of the power amplifier is not stored, the target transmission power information is received, and the direct transmission power is directly received.
  • the comparison table queries the output power of the RF transmitter for adjustment, and after the detection voltage of the power amplifier has been stored, after receiving the target transmission power information, it can detect whether the detection voltage of the current power amplifier is queried by the power amplifier. The detection voltage is consistent. If it is consistent, the output power of the current RF transmitter is determined. The transmission power of the antenna module has met the requirements of the target transmission power, and the output power adjustment of the RF transmitter is not required.
  • the signal receiving link and the radio frequency receiver may be further configured in the routing device of the wireless local area access network, and the antenna module includes an antenna and a transceiver selection switch, where the antenna is used to receive or transmit a wireless network.
  • the signal, the transceiver selection switch is used to control the connection between the antenna and the signal and the signal receiving link or is connected to the power adjustment module.
  • the antenna is connected with the power adjustment module, the corresponding signal is transmitted, and when the antenna is connected with the signal receiving link, the corresponding signal is The receiving process.
  • the above-mentioned radio frequency receiver and radio frequency transmitter can be integrated.
  • the antenna module may further be provided with a transceiver common filter, which can perform filtering processing on transmitting signals and receiving signals respectively. It is also possible to set a transmit filter on the signal receiving link.
  • a balun may be further disposed between the radio frequency transmitter and the power adjustment module, and an unbalanced transformer may be disposed between the radio frequency transmitter and the signal receiving link.
  • FIG. 5 is a schematic diagram of a signal transmission method according to the present invention. Schematic diagram of the process, as shown in Figure 5, the method includes:
  • Step 101 Generate a wireless network signal of the wireless local area access network, and adjust the transmit power of the wireless network signal according to the power indication information.
  • Step 102 Send the wireless network signal according to the adjusted transmit power.
  • the signal transmission method of the routing device of the wireless local area access network provided by the foregoing embodiment of the present invention is
  • the wireless network signal is adjusted according to the power indication information, and the wireless network signal can be sent according to different transmission powers, so as to adapt to the needs of carrying and using the fixed setting and obtaining a large coverage.
  • adjusting the transmit power of the wireless network signal according to the power indication information in the foregoing embodiment may include two specific implementation manners, that is, selecting the first signal link or the second signal link as the radio frequency transmitter according to the power indication information.
  • a communication link between the antenna modules, and the second signal link described above is provided with a power amplifier.
  • two communication links are respectively set, one of the communication links is provided with a power amplifier, and when the wireless network signal is transmitted through the communication link provided with the power amplifier, a larger output power can be obtained to increase the antenna module. The transmission power expands the coverage.
  • the power indication information in the foregoing embodiment may be generated according to whether the routing device is powered by an external power source, and when the routing device is powered by the external power source, generating power indication information for transmitting the wireless network signal by using the second signal link;
  • the signal link transmits power indication information of the wireless network signal.
  • the adjusting the transmit power of the wireless network signal according to the power indication information includes: querying, according to the target transmit power information of the wireless network signal, the output power of the corresponding radio frequency transmitter in the transmit power comparison table, according to The output power generates a wireless network signal of the wireless local area access network, and the transmit power comparison table includes a correspondence between output power of at least two sets of radio frequency transmitters and transmit power of the antenna module.
  • the above-mentioned transmit power comparison table includes the corresponding relationship between the output power of at least two sets of radio frequency transmitters, the detection voltage of the power amplifier, and the transmit power of the antenna module.
  • the corresponding query is performed from the transmit power comparison table.
  • the output power of the radio frequency transmitter, and the wireless network signal for generating the wireless local area access network according to the output power includes:
  • the radio frequency transmitter Generating a wireless network signal based on an output power of the radio frequency transmitter corresponding to the target transmission power information acquired from the transmission power comparison table. That is, before the output power adjustment of the radio frequency transmitter is performed, it is judged whether the current transmission power is already the target transmission power by detecting the detection voltage of the power amplifier.
  • the routing device and signal transmission method of the wireless local area access network provided by the foregoing various embodiments
  • the transmission power of the routing device is adjusted to output wireless network signals according to different transmission powers, covering different ranges, so as to meet the needs of the portable use and fixed settings and obtain a large coverage.
  • FIG. 6 is a structural diagram of a system according to an embodiment of the present invention.
  • the routing device in this embodiment is specifically a Wi Fi radio frequency front end, and the foregoing device may be specifically With PA (with power amplifier) and wi thout PA (without power amplifier) are available.
  • the RF transceiver When working in the wi th PA mode, the RF transceiver generates a wireless network signal, and after reaching the single-ended Ba 1 un to the single-pole double-throw switch SP 2T, the SP 2T strobe reaches the transmit filter, the wifi power amplifier, and the SP3T. The antenna switch, the transceiver, and the shared filter are finally output through the antenna. In addition, when receiving the signal, the antenna receives the wif i signal, and then enters the RF transceiver through the transceiver common filter, the SP3T antenna switch, and the single-ended to differential balun Ba lun.
  • the RF transceiver When working in Wi thout PA mode, the RF transceiver outputs the wireless network signal. After differentially switching to the single-ended Ba lun, it reaches the SP2T strobe switch of the single-pole double-throw switch, and directly reaches the SP3T antenna switch through the SP2T strobe switch. The filter is finally output through the antenna.
  • the antenna when receiving the signal, the antenna receives the wi f i signal, and then enters the radio frequency transceiver through the transceiver common filter, the SP3T antenna switch, and the single-end slip Ba 1 un.
  • FIG. 7 is a schematic diagram of Wi Fi transmit power calibration according to an embodiment of the present invention. As shown in FIG. 7 , the wi fi transmit power calibration is implemented by a negative feedback circuit, and the software controls the RF transmit signal to be determined when the calibration starts.
  • the power of the wireless network signal after passing through the wi fi power amplifier, the power meter can be used to measure the output power value of the output to the antenna, and the detection voltage of the Wi fi power amplifier can also be measured.
  • the entire calibration is an open loop process. And finally generating a parameter including a correspondence relationship between an output power of at least two sets of radio frequency transmitters, a detection voltage of the wi fi power amplifier, and a transmission power of the antenna .
  • the RF transmitter determines whether the value of pdadc is 82. If not, the pdadc is stabilized at 82 by adjusting the size of pcdac to achieve power-locked 15dBm transmission.
  • the transmission power of wi f i can be changed by changing the setting item of the calibration target transmission power.
  • the calibrated power range we can achieve the output of the product from OdBm to 2 OdBm at any power level, and the accuracy can be controlled at 0.5 dBm.
  • only the software needs to call the calibration parameters of different settings.
  • the battery can be used for power supply, and the external power supply is usually used for fixed use, so it can be judged whether the device is powered by the battery.
  • the working mode switching may specifically include the process shown in Figure 8, as shown below:
  • Step 201 Determine whether the device has battery power when the device is powered on, and perform step 202 when the battery is powered. Otherwise, step 204 is performed;
  • Step 202 Perform signal transmission by SP2T strobing to a signal link of the powerless amplifier;
  • Step 203 performing a low power operation mode of w 1 an using the output power of the preset radio frequency transceiver as the transmit power of the antenna;
  • Step 204 Perform signal transmission by SP2T strobing to a signal link of the power amplifier, and select one of the transmit powers according to the calibration power parameter comparison table in the above embodiment, and then output the power of the RF transmitter. Adjust to the preset value;
  • Step 205 The radio network signal of the radio frequency transceiver is amplified by the power amplifier and transmitted to the antenna for transmission, so that the high-power transmit power output wireless network signal can be realized, and the high-power working mode of wl an is performed.
  • only the channel provided with the PA may be used, that is, the two target transmission powers are respectively selected from the transmission power parameter comparison table as the power of the high power and low power output modes, and the radio frequency transceiver is adjusted to the corresponding Power can achieve two modes of operation: high power output and low power output.
  • the routing device and the signal transmitting method of the wireless local area access network provided by the foregoing embodiments of the present invention can adjust the wireless network signal generated by the radio frequency transmitter according to the power indication information, and the wireless network signal can be sent according to different transmission powers. To meet the needs of both use and fixed settings and to obtain a larger coverage.
  • the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed.
  • the foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

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  • Computer Networks & Wireless Communication (AREA)
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Description

无线局域接入网的路由设备以及信号发射方法
本申请要求于 2010 年 2 月 11 日提交中国专利局、 申请号为 201010111663.2、 发明名称为"无线局域接入网的路由设备以及信号发射方法" 的中国专利申请的优先权， 其全部内容通过引用结合在本申请中。
技术领域
本发明实施例涉及无线通信技术领域，尤其涉及一种无线局域接入网的路 由设备以及信号发射方法。
背景技术
目前通用的无线路由设备，例如用于 3G上行无线局域网（Wi re les s Loca l Area Network , 以下简称： WLAN )接入的无线路由设备， 可分为两类。 一类是 需要覆盖家庭， 要求覆盖距离至少 100米（空旷环境）以上的距离， 且具有一 定的穿墙能力， 这类无线路由设备的功耗较大， 需要外接电源供电， 只能作为
3G 无线固定终端使用， 即通过较大功率发射无线网络信号以获取大的覆盖范 围； 另一类无线路由设备为适应随身携带使用的需求，将发射功率降低并使用 电池供电，该类无线路由设备是以较小功率发射无线网络信号，其覆盖范围也 较小。
在实现本发明过程中，发明人发现现有技术中至少存在如下问题： 现有技 术中的两类无线路由设备， 无法满足既支持覆盖较大范围如家庭覆盖的使用， 又支持随身携带使用的需求。
发明内容
本发明实施例提供一种无线局域接入网的路由设备以及信号发射方法，用 以解决现有技术中无线局域接入网的路由设备无法满足既支持较大范围的覆 盖使用， 又支持随身携带使用的需求的缺陷， 提供一种既能家庭覆盖使用， 又 能随身携带使用的路由设备。
本发明实施例提供了一种无线局域接入网的路由设备， 包括：
射频发信模块， 用于生成无线局域接入网的无线网络信号， 并根据功率指 示信息对所述无线网络信号的发射功率进行调整；
天线模块， 用于按照调整后的发射功率发出所述无线网络信号。
本发明实施例提供了一种信号发射方法， 包括： 生成无线局域接入网的无线网络信号，并根据功率指示信息对所述无线网 络信号的发射功率进行调整；
按照调整后的发射功率发出所述无线网络信号。
本发明上述实施例提供的无线局域接入网的路由设备以及信号发射方法， 通过根据功率指示信息对生成的无线网络信号进行调整，可按照不同的发射功 率发出无线网络信号，能够适应随身携带使用并获得较大覆盖范围两种使用情 况的需要。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施 例或现有技术描述中所需要使用的附图作一简单地介绍， 显而易见地， 下面描 述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出 创造性劳动性的前提下， 还可以根据这些附图获得其他的附图。
图 1为本发明无线局域接入网的路由设备实施例一的结构示意图； 图 2为本发明无线局域接入网的路由设备实施例二的结构示意图； 图 3为本发明无线局域接入网的路由设备实施例三的结构示意图； 图 4为本发明无线局域接入网的路由设备实施例三的结构示意图； 图 5为本发明信号发射方法实施例的流程示意图；
图 6为本发明一具体实施例的系统结构图；
图 7为本发明具体实施例中 wif i发射功率校准示意图；
图 8为本发明具体实施例中的流程示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚， 下面将结合本发明 实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然， 所描述的实施例是本发明一部分实施例， 而不是全部的实施例。基于本发明中 的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其 他实施例， 都属于本发明保护的范围。
针对现有技术中无线局域接入网的路由设备无法满足既支持家庭覆盖使 用， 又支持随身携带使用的需求的缺陷， 本发明实施例提供了一种无线局域接 入网的路由设备， 图 1为本发明无线局域接入网的路由设备实施例一的结构示 意图， 如图 1所示， 该设备包括射频发信模块 11和天线模块 12， 其中射频发信 模块 11用于生成无线局域接入网的无线网络信号，并根据功率指示信息对所述 无线网络信号的发射功率进行调整；天线模块 12用于按照调整后的发射功率发 出所述无线网络信号。
本发明上述实施例提供的无线局域接入网的路由设备，其中的射频发信模 块能够根据功率指示信息对无线网络信号进行调整，可按照不同的发射功率发 出无线网络信号，以适应随身携带使用和固定设置并获得较大覆盖范围两种使 用情况的需要。
在本发明上述实施例的基础上，上述实施例中的射频发信模块包括射频发 信机和功率调整模块，如图 2所示，射频发信机 111用于生成无线局域接入网的 无线网络信号， 功率调整模块还可以进一步包括链路选择开关 121、 第一信号 链路 122和第二信号链路 123， 其中上述的链路选择开关 121用于根据功率指示 信息选择所述射频发信机 111通过第一信号链路 122或者第二信号链路 123与天 线模块 12连接， 并且上述的第二信号链路 123设置有功率放大器。
在本实施例中， 其中的功率调整实质上相当于一个链路选择的过程， 其中 第二信号链路上设置有功率放大器，射频发信机按照较小的功率输出无线网络 信号后， 若无线网络信号经第二信号链路传输， 则可由其上设置的功率放大器 进行放大， 进而能够实现天线模块按照较大功率发射无线网络信号； 而经过第 一信号链路的无线网络信号不会得到放大，进而能够实现天线模块按照较小功 率发射无线无线网络信号。 因此在具体实施过程中，可通过选择第一信号链路 传输， 以满足随身携带使用的要求， 而在需要覆盖较大范围时， 选择使用第二 信号链路传输以获得较大的发射功率和覆盖范围。
如图 3所示， 上述实施例中的如果选择第二信号链路， 可在射频发信机 111 与功率放大器 13之间设置反馈模块 14，该反馈模块包括发射功率接收单元 124、 发射功率对照表 125和功率调整单元 126， 其中发射功率接收单元 124用于接收 天线模块发出的所述无线网络信号的目标发射功率信息； 功率调整单元 126用 于根据上述目标发射功率信息从发射功率对照表 125中查询对应的射频发信机 的输出功率； 发射功率对照表 125包括至少两组射频发信机的输出功率以及天 线模块发射功率的对应关系； 射频发信机 111具体用于根据上述查询到的输出 功率生成无线局域接入网的无线网络信号。
具体的在上述各个实施例中，上述的无线局域接入网的路由设备还可以进 一步包括判断模块， 该模块用于在路由设备由外接电源供电时， 生成使用第二 信号链路发送信号的功率指示信息； 用于在路由设备由电池供电时，生成使用 第一信号链路发送信号的功率指示信息。该判断模块通过对路由设备是否是由 外接电源供电进行判断， 当路由设备由外接电源供电时， 通常可确定其为固定 设置的使用方式， 即可通过第二信号链路传输， 并且第二信号链路上的功率放 大器能够对无线网络信号进行放大， 以提高信号的覆盖范围。
本发明上述实施例中设置有第一信号链路和第二信号链路，并且上述的第 二信号链路上设置有功率放大器， 可以较大的发射功率发出无线网络信号， 获 得较大的覆盖范围； 另外在使用无功率放大器的第一信号链路传输信号时， 能 够满足随身携带使用的要求，且可以有效降低路由设备的功耗， 即可使用电池 进行供电。另外还可以在上述第二信号链路中进一步的设置至少包括射频发信 机的输出功率与发射功率映射关系的对照表，按照不同的目标发射功率， 调整 射频发信机的输出功率。
在另一种实施方式中，即与上述实施例中的无线局域接入网的路由设备不 同的是， 本实施例不需设置第一信号链路， 而直接使用第二信号链路提供不同 大小的发射功率。 如图 4所示， 该设备包括射频发信机 21、 反馈模块 22、 天线 模块 23和功率放大器 24， 其中射频发信机 21、反馈模块 22和功率放大器 24构成 射频发射模块， 且上述的反馈模块 22具体可包括发射功率接收单元 221、 发射 功率对照表 222和功率调整单元 223， 其中上述的发射功率接收单元 221用于接 收天线模块的目标发射功率信息， 即所述功率指示信息； 发射功率对照表 222 包括至少两组射频发信机的输出功率以及天线模块发射功率的对应关系；功率 调整单元 223用于根据所述目标发射功率信息以及所述发射功率对照表查询对 应的射频发信机的输出功率。另外上述的射频发信机 21用于根据上述查询到的 输出功率生成无线局域接入网的无线网络信号。
另外上述的发射功率对照表还可以包括至少两组射频发信机的输出功率、 功率放大器的检波电压以及天线模块发射功率的对应关系；所述功率调整单元 用于根据所述目标发射功率信息从所述发射功率对照表查询对应的功率放大 器的检波电压何射频发信机的输出功率；所述射频发信机用于在所述查询到的 功率放大器的检波电压与检测到的功率放大器的检波电压不一致时，根据所述 查询到的输出功率生成无线局域接入网的无线网络信号。
与上述实施例中在发射功率对照表中不包括功率放大器的检波电压相比， 二者不同之处在于，如不存储功率放大器的检波电压， 则接收到目标发射功率 信息后， 直接从发射功率对照表查询射频发信机的输出功率进行调整， 而在已 经存储功率放大器的检波电压的情况下，在接收到目标发射功率信息后， 可检 测当前功率放大器的检波电压是否查询到的功率放大器的检波电压一致，若一 致则说明当前射频发信机的输出功率，天线模块的发射功率已经符合目标发射 功率的要求， 就不需要进行射频发信机的输出功率调整了。
另外在上述的无线局域接入网的路由设备上还可以一步的设置信号接收 链路和射频收信机，且天线模块包括天线和收发选择开关， 其中上述的天线用 于接收或发送无线网络信号，收发选择开关用于控制天线与信号与信号接收链 路连接或者是与功率调整模块连接，当天线与功率调整模块连接时对应信号的 发送过程， 当天线与信号接收链路连接时对应信号的接收过程。 另外上述的射 频收信机和射频发信机可以设置为一体。
在本发明上述各个实施例提供的无线局域接入网的路由设备中，上述的天 线模块还可以进一步设置有收发共用滤波器，能够对分别在发射信号和接收信 号时进行滤波处理。 另外还可以在信号接收链路设置发射滤波器。
另外在上述实施例中还可以进一步的在射频发信机与功率调整模块之间 设置有不平衡变压器，另外还可以在射频发信机与所述信号接收链路之间设置 不平衡变压器。
与上述无线局域接入网的路由设备实施例对应的， 本发明还提供了相应 的、 上述无线局域接入网的路由设备的信号发射方法， 图 5为本发明信号发射 方法实施例的流程示意图， 如图 5所示， 该方法包括：
步骤 101、 生成无线局域接入网的无线网络信号， 并才艮据功率指示信息对 所述无线网络信号的发射功率进行调整；
步骤 102、 按照调整后的发射功率发出所述无线网络信号。
本发明上述实施例提供的无线局域接入网的路由设备的信号发射方法，通 过根据功率指示信息对无线网络信号进行调整，可按照不同的发射功率发出无 线网络信号，以适应随身携带使用和固定设置并获得较大覆盖范围两种使用情 况的需要。
另外上述实施例中的根据功率指示信息调整无线网络信号的发射功率可 以包括两种具体实现方式，即可以是根据功率指示信息选择第一信号链路或者 第二信号链路作为射频发信机与天线模块之间的通信链路，且上述的第二信号 链路设置有功率放大器。 本实施例中分别设置两条通信链路， 其中一条通信链 路设置有功率放大器，当无线网络信号经过设置有功率放大器的通信链路传输 时， 可以获得较大的输出功率， 以增加天线模块的发射功率， 扩大覆盖范围。
另外上述实施例中的功率指示信息可以根据路由设备是否由外接电源供 电生成，在路由设备由外接电源供电时， 生成使用第二信号链路传输无线网络 信号的功率指示信息；否则生成使用第一信号链路传输无线网络信号的功率指 示信息。
另外还有一种实施方式，上述的根据功率指示信息调整无线网络信号的发 射功率包括：根据所述无线网络信号的目标发射功率信息查询发射功率对照表 中对应的射频发信机的输出功率，根据所述输出功率生成无线局域接入网的无 线网络信号，所述发射功率对照表包括至少两组射频发信机的输出功率以及天 线模块发射功率的对应关系。
另外上述发射功率对照表包括至少两组射频发信机的输出功率、功率放大 器的检波电压以及天线模块发射功率的对应关系，此时述根据所述目标发射功 率信息从发射功率对照表中查询对应的射频发信机的输出功率，根据所述输出 功率生成无线局域接入网的无线网络信号包括：
根据所述目标发射功率信息从发射功率对照表中查询对应的功率放大器 的检波电压，并在所述查询到的功率放大器的检波电压与检测到的功率放大器 的检波电压不一致时，射频发信机根据从所述发射功率对照表中获取的、与所 述目标发射功率信息对应的射频发信机的输出功率生成无线网络信号。即在进 行射频发信机的输出功率调整前，通过检测功率放大器的检波电压判断当前发 射功率是否已经是目标发射功率。
上述各个实施例提供的无线局域接入网的路由设备以及信号发射方法，通 过对路由设备的发射功率进行调整，以便按照不同的发射功率输出无线网络信 号，覆盖不同的范围， 即可以满足随身携带使用和固定设置并获得较大覆盖范 围两种使用情况的需要。
以下是本发明一具体实施例， 图 6为本发明一具体实施例的系统结构图， 如图 6所示， 本实施例中的路由设备具体为一 wi f i射频前端， 具体的上述的设 备可提供 wi th PA (有功率放大器）和 wi thout PA (无功率放大器） 两种工作 模式，
其中在 wi th PA模式工作时， 射频收发信机生成无线网络信号， 经过差分 转单端的 Ba 1 un后到达单刀双掷开关 SP 2T，通过 SP 2T选通到达发射滤波器、 w i f i 功率放大器、 SP3T天线开关、 收发共用滤波器， 最后通过天线输出。 另外对于 接收信号时， 天线接收到 wif i信号后， 通过收发共用滤波器、 SP3T天线开关、 单端转差分不平衡变压器 Ba lun后进入射频收发信机。
在 Wi thout PA模式工作时， 由射频收发信机输出无线网络信号， 经过差分 转单端的 Ba lun后到达单刀双掷开关的 SP2T选通开关， 通过 SP2T选通开关直接 到达 SP3T天线开关、 收发共用滤波器， 最后通过天线输出。 另外对于接收信号 时， 天线接收到 wi f i信号后， 通过收发共用滤波器、 SP3T天线开关、 单端转差 分 Ba 1 un后进入射频收发信机。
上述实施例提供的两种工作模式相对独立，信号接收通路共用一个，对于 信号发射通路， 一条利用外置功率放大器进行放大后输出， 另外一条不设置功 率放大器， 直接由射频收发信机输出。 在具体实施过程中上述的 SP2T、 SP3T 的开关可通过软件调用不同的脚本来实现。 两组射频发信机的输出功率、功率放大器的检波电压以及天线模块发射功率的 对应关系。 图 7为本发明具体实施例中 wi f i发射功率校准示意图， 如图 7所示， wi f i发射功率校准 ^^于一个负反馈电路来实现的，当校准开始时软件控制射 频发射信机以一定的功率发送无线网路信号， 当经过 wi f i功率放大器后， 可使 用功率计测量输出到天线的发射功率值，同时也可对 wi f i功率放大器的检波电 压进行测量， 整个校准是一个开环过程， 最终生成包括至少两组射频发信机的 输出功率、 wi f i功率放大器的检波电压以及天线的发射功率的对应关系的参数 。 具体结果可如下:
输出功率 （V ) 检波电压（V) 发射功率 （dBm)
10 22 0
11 24 0. 5
12 26 1
1 3 28 1. 5
14 30 2
15 32 2. 5
16 34 3
17 36 3. 5
18 38 4
19 40 4. 5
20 42 5
21 44 5. 5
22 46 6
23 48 6. 5
24 50 7
25 52 7. 5
26 54 8
27 56 8. 5
28 58 9
29 60 9. 5
30 62 10
31 64 10. 5
32 66 11
33 68 11. 5
34 70 12
35 72 12. 5
36 74 1 3 37 76 1 3. 5
38 78 14
39 80 14. 5
40 82 15
41 84 15. 5
42 86 16
43 88 16. 5
44 90 17
45 92 17. 5
46 94 18
47 96 18. 5
48 98 19
49 100 19. 5
50 102 20 通过上述的参数对照表可知， 在发射功率 0-15dBm范围内， 射频收发信机 的输出功率， wi f iPA的检波电压， 当目标发射功率设置为 15dBm时， 可通过软 件获取 pcdac = 40， pdadc = 82 , pwr = 15这组数据。 wi f i工作时， 射频发信机 判断 pdadc的值是否为 82， 如果不是， 则通过调整 pcdac的大小将 pdadc稳定在 82 , 即可实现功率锁定 15dBm发射。
同样， 可通过改变校准目标发射功率的设置项， 来改变 wi f i的发射功率。 根据校准的功率范围， 我们可以实现产品从 OdBm到 2 OdBm这个区间以任意一个 功率等级进行输出， 精度可以控制在 0. 5dBm。 具体在实现时， 只需要软件调用 不同设置的校准参数即可。
在具体实施过程中， 由于随身携带使用时设备发射功率较小， 功耗较小， 因此可使用电池供电， 而固定使用时通常使用外接电源供电， 因此可通过判断 设备是否由电池供电的方式进行工作模式切换，具体可包括如图 8所示的流程， 下所示：
步骤 201、开机时判断设备是否有电池供电，在由电池供电时执行步骤 202， 否则执行步骤 204 ;
步骤 202、 通过 SP2T选通到无功率放大器的信号链路进行信号传输； 步骤 203、使用预先设置的射频收发信机的输出功率作为天线的发射功率， 进行 w 1 an的小功率工作模式；
步骤 204、 通过 SP2T选通到设置功率放大器的信号链路进行信号传输， 同 时可根据上述实施例中校准得到的发射功率参数对照表，选择其中一个发射功 率， 则可射频发信机的输出功率调整到预设值；
步骤 205、 射频收发信机的无线网络信号， 经由功率放大器放大后传输到 天线进行发射， 即可实现大功率的发射功率输出无线网络信号， 以进行 wl an 的大功率工作模式。
另外在具体实施过程中， 可以只使用设置有 PA的通道， 即从发射功率参数 对照表选择两个目标发射功率分别作为大功率和小功率输出模式的功率，将射 频收发信机调整到相应的功率即可实现大功率输出和小功率输出两种工作模 式。
本发明上述实施例提供的无线局域接入网的路由设备以及信号发射方法， 通过根据功率指示信息对射频发信机生成的无线网络信号进行调整，可按照不 同的发射功率发出无线网络信号，以适应随身携带使用和固定设置并获得较大 覆盖范围两种使用情况的需要。
本领域普通技术人员可以理解：实现上述方法实施例的全部或部分步骤可 以通过程序指令相关的硬件来完成，前述的程序可以存储于一计算机可读取存 储介质中， 该程序在执行时， 执行包括上述方法实施例的步骤； 而前述的存储 介质包括： ROM、 RAM, 磁碟或者光盘等各种可以存储程序代码的介质。
最后应说明的是： 以上实施例仅用以说明本发明的技术方案， 而非对其 限制； 尽管参照前述实施例对本发明进行了详细的说明， 本领域的普通技术人 员应当理解： 其依然可以对前述各实施例所记载的技术方案进行修改， 或者对 其中部分技术特征进行等同替换； 而这些修改或者替换， 并不使相应技术方案 的本质脱离本发明各实施例技术方案的精神和范围。

Claims

权 利 要 求
1、 一种无线局域接入网的路由设备， 其特征在于， 包括：
射频发信模块， 用于生成无线局域接入网的无线网络信号， 并根据功率指 示信息对所述无线网络信号的发射功率进行调整；
天线模块， 用于按照调整后的发射功率发出所述无线网络信号。
2、 根据权利要求 1所述的无线局域接入网的路由设备， 其特征在于， 所述 射频发信模块包括射频发信机和功率调整模块，所述射频发信机用于生成无线 局域接入网的无线网络信号， 所述功率调整模块包括链路选择开关、第一信号 链路和第二信号链路，所述链路选择开关用于根据功率指示信息选择所述射频 发信机通过第一信号链路或者第二信号链路与天线模块连接，所述第二信号链 路设置有功率放大器。
3、 根据权利要求 2所述的无线局域接入网的路由设备， 其特征在于， 所述 功率放大器和所述射频发信机之间存在反馈模块，所述反馈模块包括发射功率 接收单元、 功率调整单元和发射功率对照表， 所述发射功率接收单元用于接收 天线模块发出的所述无线网络信号的目标发射功率信息；所述功率调整单元用 于根据所述目标发射功率信息查询发射功率对照表中对应的射频发信机的输 出功率；所述发射功率对照表包括至少两组射频发信机的输出功率和天线模块 发射功率的对应关系；所述射频发信机用于根据所述查询到的所述输出功率生 成无线局域接入网的无线网络信号。
4、根据权利要求 2〜3任一所述的无线局域接入网的路由设备，其特征在于， 还包括判断模块， 用于在路由设备由外接电源供电时，生成使用第二信号链路 发送信号的功率指示信息； 用于在路由设备由电池供电时，生成使用第一信号 链路发送信号的功率指示信息。
5、 根据权利要求 1所述的无线局域接入网的路由设备， 其特征在于， 所述 射频发信模块包括射频发信机、功率放大器以及位于所述功率放大器和所述射 频发信机之间的反馈模块， 所述反馈模块包括发射功率接收单元、发射功率对 照表和功率调整单元，所述发射功率接收单元用于接收天线模块的目标发射功 率信息， 即所述功率指示信息； 所述功率调整单元用于根据所述目标发射功率 信息查询发射功率对照表中对应的射频发信机的输出功率；所述发射功率对照 表包括至少两组射频发信机的输出功率以及天线模块发出的所述无线网络信 号的发射功率的对应关系；所述射频发信机用于根据查询到的所述输出功率生 成所述无线局域接入网的无线网络信号。
6、 根据权利要求 5所述的无线局域接入网的路由设备， 其特征在于， 所述 发射功率对照表包括至少两组射频发信机的输出功率、所述功率放大器的检波 电压以及天线模块发射功率的对应关系；所述功率调整单元用于根据所述目标 发射功率信息从所述发射功率对照表查询对应的功率放大器的检波电压和射 频发信机的输出功率；所述射频发信机用于在所述查询到的功率放大器的检波 电压与检测到的功率放大器的检波电压不一致时，根据所述查询到的输出功率 生成无线局域接入网的无线网络信号。
7、 一种信号发射方法， 其特征在于， 包括：
生成无线局域接入网的无线网络信号，并根据功率指示信息对所述无线网 络信号的发射功率进行调整；
按照调整后的发射功率发出所述无线网络信号。
8、 根据权利要 7所述的信号发射方法， 其特征在于， 所述根据功率指示信
, ί对所述无线网络信号的发射功率进行调整包括：
根据所述功率指示信息选择第一信号链路或者第二信号链路作为射频发 信机与天线模块之间的通信链路， 所述第二信号链路设置有功率放大器。
9、 根据权利要求 8所述的信号发射方法， 其特征在于， 所述功率指示信息 根据路由设备是否由外接电源供电生成，在路由设备由外接电源供电时， 生成 使用第二信号链路传输无线网络信号的功率指示信息；否则生成使用第一信号 链路传输无线网络信号的功率指示信息。
10、 根据权利要求 7所述的信号发射方法， 其特征在于， 所述根据功率指 示信息对所述无线网络信号的发射功率进行调整包括：
根据所述无线网络信号的目标发射功率信息查询发射功率对照表中对应 的射频发信机的输出功率，根据所述输出功率生成无线局域接入网的无线网络 信号，所述发射功率对照表包括至少两组射频发信机的输出功率以及天线模块 发射功率的对应关系。
11、 根据权利要求 10所述的信号发射方法， 其特征在于， 所述发射功率对 照表包括至少两组射频发信机的输出功率、功率放大器的检波电压以及天线模 块发射功率的对应关系，所述根据所述目标发射功率信息从发射功率对照表中 查询对应的射频发信机的输出功率，根据所述输出功率生成无线局域接入网的 无线网络信号包括：
根据所述目标发射功率信息从发射功率对照表中查询对应的功率放大器 的检波电压，并在所述查询到的功率放大器的检波电压与检测到的功率放大器 的检波电压不一致时，射频发信机根据从所述发射功率对照表中获取的、与所 述目标发射功率信息对应的射频发信机的输出功率生成无线网络信号。
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