WO2012122906A1 - 一种信道占用方法、移动ap和外接sta - Google Patents

一种信道占用方法、移动ap和外接sta Download PDF

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Publication number
WO2012122906A1
WO2012122906A1 PCT/CN2012/071925 CN2012071925W WO2012122906A1 WO 2012122906 A1 WO2012122906 A1 WO 2012122906A1 CN 2012071925 W CN2012071925 W CN 2012071925W WO 2012122906 A1 WO2012122906 A1 WO 2012122906A1
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Prior art keywords
period
channel
built
sta
external
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PCT/CN2012/071925
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English (en)
French (fr)
Inventor
张利伟
杨建平
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华为终端有限公司
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Publication of WO2012122906A1 publication Critical patent/WO2012122906A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/02—Hybrid access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
    • H04W84/22—Self-organising networks, e.g. ad-hoc networks or sensor networks with access to wired networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a channel occupation method, a mobile AP, and an external STA.
  • APs mobile access points
  • STA is the client of wireless network, AP.
  • AP wireless access node
  • a wireless access node or hotspot used to connect STAs to the Internet.
  • a mobile phone can be a common mobile AP, which has the function of a STA: as a client device to access the Internet, at the same time, some smart phones also have the function of an AP: externally connect several client devices, and provide Internet access for other client devices.
  • FIG. 1 is a schematic structural diagram of a mobile AP in the prior art.
  • the mobile AP 101 includes: a built-in AP 102 and a built-in STA 103.
  • the built-in STA 103 is connected to the external AP 104, and the built-in STA 103 is connected to the Internet through the external AP 104. It should be noted that the built-in STA 103 is the main function module for implementing the mobile AP 101 Internet access function, and the built-in STA 103 is no longer connected to other clients. device.
  • the built-in AP 102 can be connected to several client devices for providing Internet access functions to other client devices. Usually, the number of external client devices is one to three. Here, Figure 1 only has three external client devices. For example. As shown in FIG. 1, the built-in AP 102 is simultaneously connected to the first external STA 105, the second external STA 106, and the third external STA 107. Meanwhile, the built-in AP 102 is also connected to the built-in STA 103 for using the built-in STA 103, and The external AP 104 connected to the built-in STA 103 connects the first external STA 105, the second external STA 106, and the third external STA 107 to the Internet.
  • the built-in AP 102 and the external AP 104 have the same functions and structures, and are used to connect the STA to the Internet.
  • the third external STA 107 has the same function and structure, and is a client of the wireless network. It can be seen that the built-in AP 102, the built-in STA 103, the first external STA 105, the second external STA 106, and the third external STA 107 all access the Internet through the external AP 104, and the built-in AP 102, the built-in STA 103, and the first external STA are 105.
  • the second external STA 106 and the third external STA 107 are regarded as independent workstations, and each workstation will preempt the same channel for network data transmission.
  • FIG. 2 is a schematic diagram of a channel occupation period in the prior art.
  • FIG. 2 only shows one channel occupation period, and each channel occupation period has the same structure.
  • a channel occupation period includes a first period T1 and a second period T2.
  • each workstation uses a method of distributed coordination function (DCF) to perform channel occupation.
  • DCF distributed coordination function
  • the method is also called a carrier sense multiple access method with collision avoidance.
  • the second period T2 is a delay time, which is used to interval the first period T1 in the adjacent channel occupation period, and enters the next channel occupation after the second period T2 ends. Cycle, cycle like this.
  • the built-in AP 102 detects the beginning of the first period T1 in the channel occupation period, and starts to use the DCF method to preempt the channel with other workstations.
  • the DCF method is specifically:
  • the built-in AP 102 listens to the idle state of the network to detect whether there is any other.
  • the workstation is transmitting data packets. If the network is in an idle state, the built-in AP 102 occupies a channel for data packet transmission. If the network is busy, the built-in AP 102 continues to listen for the transmission of the current data packet. After the current data packet transmission ends, Waiting for a period of time, when the interval is over, if there are still no other stations transmitting data packets, the built-in AP 102 can occupy the channel for transmission.
  • the channel is also occupied by the above method.
  • the size of the data packet is limited, and the duration of the first period T1 must be used to transmit a data packet.
  • the DCF method in the prior art can coordinate the access of multiple workstations to the channel, and each workstation does not have any priority when occupying the channel, which ensures that all workstations can occupy the channel fairly.
  • the built-in AP 102, the built-in STA 103, and the STAs external to the mobile AP 101 use the DCF method.
  • the first period T1 performs channel competition.
  • the embodiment of the invention provides a channel occupation method, which can improve the data transmission rate of the built-in AP in the mobile AP.
  • the embodiment of the invention provides a mobile AP and an external STA, which can improve the data transmission rate of the built-in AP in the mobile AP.
  • the embodiment of the invention provides an external STA, which can improve the data transmission rate of the built-in AP in the mobile AP.
  • a channel occupation method is applied to a mobile AP including a built-in access point AP and a built-in workstation STA, the method includes: configuring a channel occupation period in the built-in AP in advance, each channel occupation period including a first period The first period includes the AP occupying the channel period, and the method further includes: when the built-in AP detects the beginning end of the AP occupied channel period, separately occupying the channel for data transmission during the AP occupied channel period.
  • a personal wireless access point AP device the mobile AP includes a built-in AP and a built-in workstation STA, and the built-in STA accesses the Internet through an external AP, and the built-in AP accesses the Internet through the built-in STA and the external STA.
  • the built-in AP includes: a first configuration module and a first transmission module; the first configuration module is configured to pre-configure a channel occupation period in the built-in AP, where each channel occupation period includes a first period, where the first period includes The AP occupies a channel period;
  • the first transmission module is configured to detect a channel occupation period. When detecting the beginning end of the channel occupied by the AP in the channel occupation period, the channel is separately occupied for data transmission during the channel occupied by the AP.
  • An external workstation STA the external STA device includes: a third configuration module and a third transmission module;
  • the third configuration module is configured to pre-configure a channel occupation period in the external STA, where each channel occupation period includes a first period, where the first period includes a competition period;
  • the third transmission module is configured to detect a channel occupation period.
  • the distributed coordination function DCF method is used to compete for the channel during the competition period. data transmission.
  • a channel occupation period is configured in the built-in AP, and each channel occupation period includes a first period, and the first period includes an AP occupied channel period, when the built-in AP detects When the AP occupies the beginning of the channel period, the channel is separately occupied for the data transmission during the AP occupied channel period.
  • the AP occupied channel period is configured for each channel occupation period for the built-in AP, and the built-in AP does not need to be used. Participate in channel competition and improve the data transmission rate of the built-in AP.
  • FIG. 1 is a schematic structural diagram of a mobile AP in the prior art.
  • FIG. 2 is a schematic diagram of a channel occupation period in the prior art.
  • FIG. 3 is a flowchart of a channel occupation method according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a channel occupation period in an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a mobile AP according to an embodiment of the present invention. detailed description
  • FIG. 3 is a flowchart of a channel occupation method according to an embodiment of the present invention. As shown in FIG. 3, the method includes the following steps:
  • Step 301 Configure a channel occupation period in the built-in AP, where each channel occupation period includes a first period T1 and a second period T2.
  • the first period T1 includes an access point period ( ⁇ , Access Point Period).
  • FIG. 4 is a schematic diagram of a channel occupation period in the embodiment of the present invention.
  • FIG. 4 only shows one channel occupation period, and each channel occupation period has the same structure.
  • a channel occupation period includes a first period T1 and a second period T2, wherein the durations of the first period T1 and the second period T2 may be the same as in the prior art, and the second period T2 is a delay time. After the second period T2 ends, the next channel occupation period is entered.
  • the built-in AP 102, the built-in STA 103, and the STAs external to the mobile AP 101 use DCF.
  • the built-in AP 102 is regarded as a group of groups, and other STAs are regarded as another group.
  • the other STAs include: a built-in STA 103, a first external STA 105, and a second external STA. 106.
  • the first period T1 is divided into two time periods, and the two time periods are respectively used for data transmission of the two types of groups.
  • the first period T1 includes an APP and a contention period (CP), and the APP is used for the built-in AP 102 exclusive channel, that is, in the APP, the built-in AP 102 does not need to be
  • the STA performs channel competition and can separately occupy the channel for data transmission.
  • other STAs also use the prior art DCF method for channel competition.
  • the configuration of the channel occupancy period is implemented in the medium access control (MAC) layer.
  • the configuration method is as follows: According to the number of external STAs, the duration of the channel occupied by the AP and the duration of the competition period are set, specifically: If the number of external STAs is relatively large, the ratio of the duration of the APP to the duration of the CP is relatively large. Conversely, if the number of external STAs is relatively small, the ratio of the duration of the APP to the duration of the CP is set to be relatively small. For example, if the number of external STAs is one, the ratio of the duration of the APP to the duration of the CP can be configured to be 1: 1 .
  • the duration of the APP can be configured to be 10 milliseconds, and the duration of the CP. It can be configured as 10 milliseconds. If the number of external STAs is greater than one, the ratio of the duration of the APP to the duration of the CP can be configured to be 3: 2. If the duration of the first period T1 is 20 milliseconds, the duration of the APP can be configured as 12 In milliseconds, the duration of the CP can be configured to 8 milliseconds.
  • the above configuration may also be performed according to a user's instruction, specifically: receiving a user instruction, the user's instruction indicating the duration of the APP and the duration of the CP, and configuring according to the user's instruction.
  • a user's instruction specifically: receiving a user instruction, the user's instruction indicating the duration of the APP and the duration of the CP, and configuring according to the user's instruction.
  • two input boxes can be provided to the user on the user interface of the mobile AP, one input box is used to receive the APP duration input by the user, and the other input box is used to receive the CP duration input by the user, and the APP layer is used in the MAC layer.
  • the duration and the duration of the CP are respectively configured as the corresponding values entered by the user in the input box.
  • other methods can be used to receive user instructions, which are merely examples.
  • Step 302 When the built-in AP detects the start end of the APP, the channel is occupied in the APP for data transmission.
  • the method of occupying the channel can be a DCF method.
  • the built-in AP can exclusively enjoy the channel for data transmission in the APP.
  • the built-in AP no longer occupies the channel, and other STAs use the existing DCF method for channel competition.
  • the built-in AP since the APP is configured for the dedicated AP in each channel occupation period, the built-in AP does not need to participate in channel competition, thereby improving the data transmission rate of the built-in AP.
  • the external STAs in the prior art also have a relatively low data transmission rate due to the limitation of the built-in AP 102, especially when the number of external STAs is relatively large. This situation is particularly prominent.
  • the data transmission rate of the built-in AP is increased, the data transmission rate of the STA externally connected to the mobile AP is also indirectly improved.
  • the embodiment of the present invention divides the first period T1 in the channel occupation period into two time periods: APP and CP.
  • the built-in AP 102 in the mobile AP 101 does not participate in channel preemption, and the exclusive channel in the APP performs data transmission.
  • the STA external to the built-in AP 102 and the built-in STA 103 in the mobile AP 101 use the DCF method to perform channel.
  • the competition it can be seen that since the APP is configured for the dedicated AP 102 for each channel occupation period, the built-in AP 102 does not need to participate in channel competition, and the data transmission rate of the built-in AP 102 is improved.
  • FIG. 5 is a schematic structural diagram of a mobile AP and an external STA according to an embodiment of the present invention.
  • the mobile AP 101 includes a built-in AP 102 and a built-in workstation STA 103.
  • the built-in STA 103 is connected to the Internet through the external AP 104, and the built-in AP 102 is connected to at least one external STA (the first external STA 105, the second external STA 106, and the third external STA 107), and the external STA is connected. the Internet.
  • the built-in AP 102 includes: a first configuration module 501 and a first transmission module 502.
  • the first configuration module 501 is configured to pre-configure a channel occupation period in the built-in AP 102, where each channel occupation period includes the first
  • the first period includes an AP occupation channel period
  • the first transmission module 502 is configured to detect a channel occupation period, and when detecting the start end of the AP occupation channel period in the channel occupation period, occupy the channel in the AP During the period, the channel is separately occupied for data transmission.
  • the built-in STA 103 includes: a second configuration module 503 and a second transmission module 504.
  • the second configuration module 503 is configured to pre-configure a channel occupation period in the built-in STA 103, where each channel occupation period includes the first a period, the first period further includes a competition period;
  • the second transmission module 504 is configured to detect a channel occupation period, when the start end of the competition period in the channel occupation period is detected, during the competition period
  • the distributed coordination function DCF method is used to compete for the channel for data transmission.
  • the device further includes: a receiving module 507;
  • the receiving module 507 is configured to receive an external command, where the external command is used to indicate a duration of the channel period occupied by the AP and a duration of the competition period;
  • the first configuration module 501 and the second configuration module 503 configure the duration of the AP occupation channel period and the duration of the competition period according to the external command.
  • An external workstation STA the external STA device includes: a third configuration module 506 and a third transmission module 505;
  • the third configuration module 506 is configured to pre-configure a channel occupation period in the external STA, where each channel occupation period includes a first period, where the first period includes a contention period;
  • the third transmission module 505 is configured to detect a channel occupation period.
  • the channel occupation period is configured in advance in the built-in AP, and each channel occupation period includes a first period, and the first period includes an AP occupied channel period, when the built-in AP detects
  • the AP occupies the beginning of the channel period the channel is separately occupied for the data transmission during the AP occupied channel period.
  • the AP occupied channel period is configured for the built-in AP, and the built-in AP does not need to participate.
  • Channel competition increases the data transfer rate of the built-in AP.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

本发明公开了一种信道占用方法，预先在内置AP中配置信道占用周期，每一信道占用周期包括第一周期，第一周期包括AP占用信道期，当内置AP检测到AP占用信道期的开始端时，在AP占用信道期内单独占用信道进行数据传输。同时，本发明还公开了一种移动AP和外接STA，采用本发明公开的方法和设备提高了内置AP的数据传输速率。

Description

一种信道占用方法、 移动 AP和外接 STA 本申请要求于 2011年 3月 11提交中国专利局、申请号为 201110059794.5、 发明名称为"一种信道占用方法、 移动 AP和外接 STA"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
本发明涉及无线通讯领域， 特别涉及一种信道占用方法、 移动 AP和外接 STA。
背景技术
随着无线通讯技术的发展， 移动接入点 （AP, Access Point )逐渐得到了 广泛的应用， 其兼具 AP和工作站（ STA, Station ) 的功能， 其中， STA为无 线网络的客户端， AP也称为无线访问节点或者热点，用于将 STA接入互联网。 例如， 手机可以为一种常见的移动 AP, 其具备 STA的功能： 作为客户端设备 上网， 同时， 一些智能手机还具备 AP的功能： 外接若干客户端设备， 用于为 其他客户端设备提供上网功能。
下面对现有技术中的移动 AP进行介绍。 图 1为现有技术中的移动 AP的 结构示意图， 如图 1所示， 移动 AP 101包括： 内置 AP 102和内置 STA 103。
内置 STA 103与外接 AP 104相连，通过外接 AP 104将内置 STA 103接入 互联网， 需要说明的是， 内置 STA 103为实现移动 AP 101上网功能的主要功 能模块， 内置 STA 103不再外接其他客户端设备。
内置 AP 102可外接若干客户端设备， 用于为其他客户端设备提供上网功 能， 通常外接的客户端设备的数量为 1个至 3个， 在此， 图 1仅以外接的三个 客户端设备为例。 如图 1所示， 内置 AP 102同时与第一外接 STA 105、 第二 外接 STA 106、 第三外接 STA 107相连， 同时， 内置 AP 102还与内置 STA 103 相连， 用于通过内置 STA 103、 以及与内置 STA 103连接的外接 AP 104将第 一外接 STA 105、 第二外接 STA 106、 第三外接 STA 107接入互联网。
需要说明的是， 上述内置 AP 102和外接 AP 104的功能和结构相同， 均用 于将 STA接入互联网。 上述内置 STA 103、 第一外接 STA 105、 第二外接 STA 106、 第三外接 STA 107的功能和结构相同， 均为无线网络的客户端。 可见，上述内置 AP 102、 内置 STA 103、第一外接 STA 105、第二外接 STA 106、 第三外接 STA 107均通过外接 AP 104接入互联网， 将内置 AP 102、 内 置 STA 103、 第一外接 STA 105、 第二外接 STA 106、 第三外接 STA 107均视 为独立的工作站， 则各个工作站将抢占同一信道进行网络数据传输。
下面， 以内置 AP 102为例现有技术中的信道抢占方法进行具体介绍。 预先在 AP 102中配置信道占用周期， 图 2为现有技术中的信道占用周期 示意图， 图 2仅示出一个信道占用周期， 每个信道占用周期的结构完全相同。 如图 2所示， 一个信道占用周期包括第一周期 T1和第二周期 T2, 在第一周期 T1 中， 各个工作站釆用分布式协调功能 （DCF , Distributed Coordination Function ) 的方法进行信道占用， 此方法也称为带碰撞避免的载波侦听多址访 问方法， 第二周期 T2为延迟时间， 用于间隔相邻信道占用周期中的第一周期 T1 , 第二周期 T2结束后进入下一信道占用周期， 如此循环。
内置 AP 102检测到信道占用周期中第一周期 T1的开始端来临时，开始釆 用 DCF方法与其他工作站抢占信道， DCF方法具体为： 内置 AP 102侦听网 络的空闲状态， 以检测是否有其它工作站正在传输数据包，如果网络呈现空闲 状态， 则内置 AP 102占用信道进行数据包的传输， 如果网络呈现忙碌状态， 则内置 AP 102继续侦听当前数据包的传输， 当前数据包传送结束后， 再继续 等待一段时间间隔， 当这段时间间隔结束时，如果仍然没有其它工作站传送数 据包， 则内置 AP 102可占用信道进行传输。
对于其他工作站， 也是釆用上述方法占用信道。
需要说明的是， 现有技术中对数据包的大小有限定， 第一周期 T1的时长 必定可用于传输完毕一个数据包。
可见， 现有技术中的 DCF方法能够协调多个工作站对信道的访问， 各个 工作站在占用信道时没有任何优先级的规定 ,保证了所有的工作站能够公平地 占用信道。 换句话说， 在现有技术中， 内置 AP 102、 内置 STA 103、 以及移动 AP 101外接的 STA(第一外接 STA 105、第二外接 STA 106、第三外接 STA 107 ) 釆用 DCF的方法在第一周期 T1进行信道竟争。
然而， 由于现有技术中的内置 AP参与了信道的竟争， 内置 AP只有抢占 到了信道时才能进行传输，因此，现有技术中内置 AP的数据传输速率比较低。 发明内容
本发明实施例提供一种信道占用方法， 能够提高移动 AP中内置 AP的数据 传输速率。
本发明实施例提供一种移动 AP和外接 STA, 能够提高移动 AP中内置 AP的 数据传输速率。
本发明实施例提供一种外接 STA, 能够提高移动 AP中内置 AP的数据传输 速率。
本发明实施例的技术方案是这样实现的：
一种信道占用方法， 该方法应用于包括内置接入点 AP和内置工作站 STA 的移动 AP中， 该方法包括： 预先在所述内置 AP中配置信道占用周期， 每一信 道占用周期包括第一周期， 第一周期包括 AP占用信道期， 该方法还包括： 当内置 AP检测到所述 AP占用信道期的开始端时，在所述 AP占用信道期内 单独占用信道进行数据传输。
一种贴身无线接入点 AP设备， 所述移动 AP包括内置 AP和内置工作站 STA, 所述内置 STA通过外接 AP接入互联网， 所述内置 AP通过所述内置 STA 和外接 STA接入互联网， 所述内置 AP包括： 第一配置模块和第一传输模块； 所述第一配置模块， 用于预先在所述内置 AP中配置信道占用周期， 每一 信道占用周期包括第一周期， 第一周期包括 AP占用信道期；
所述第一传输模块， 用于检测信道占用周期， 当检测到信道占用周期中所 述 AP占用信道期的开始端时， 在所述 AP占用信道期内单独占用信道进行数据 传输。
一种外接工作站 STA, 所述外接 STA设备包括： 第三配置模块和第三传输 模块；
所述第三配置模块， 用于预先在所述外接 STA中配置信道占用周期， 每一 信道占用周期包括第一周期， 第一周期包括竟争期；
所述第三传输模块， 用于检测信道占用周期， 当检测到信道占用周期中所 述竟争期的开始端时，在所述竟争期内釆用分布式协调功能 DCF方法竟争信道 进行数据传输。
根据本发明实施例的技术方案， 预先在内置 AP中配置信道占用周期， 每 一信道占用周期包括第一周期， 第一周期包括 AP占用信道期， 当内置 AP检测 到 AP占用信道期的开始端时，在 AP占用信道期内单独占用信道进行数据传输， 可见， 本发明实施例在每个信道占用周期配置了 AP占用信道期以供内置 AP专 用， 内置 AP无需参与信道竟争， 提高了内置 AP的数据传输速率。 附图说明
图 1为现有技术中的移动 AP的结构示意图。
图 2为现有技术中的信道占用周期示意图。
图 3为本发明实施例所提供的一种信道占用方法的流程图。
图 4为本发明实施例中的信道占用周期示意图。
图 5为本发明实施例所提供的一种移动 AP的结构示意图。 具体实施方式
为使本发明的目的、技术方案及优点更加清楚明白， 以下参照附图并举实 施例， 对本发明所述方案作进一步地详细说明。
实施例一
图 3为本发明实施例所提供的一种信道占用方法的流程图。 如图 3所示， 该方法包括以下步骤：
步骤 301 , 预先在内置 AP中配置信道占用周期， 每一信道占用周期包括 第一周期 T1和第二周期 T2。 其中， 第一周期 T1包括 ΑΡ占用信道期（ΑΡΡ, Access Point Period )。
图 4为本发明实施例中的信道占用周期示意图，图 4仅示出一个信道占用 周期， 每个信道占用周期的结构完全相同。 如图 4所示， 一个信道占用周期包 括第一周期 T1和第二周期 T2, 其中， 第一周期 T1和第二周期 T2的时长与 现有技术可以是相同的， 第二周期 T2为延迟时间， 第二周期 T2结束后进入 下一信道占用周期。
在现有技术中， 在第一周期 T1内， 内置 AP 102、 内置 STA 103、 以及移 动 AP 101外接的 STA (第一外接 STA 105、 第二外接 STA 106、 第三外接 STA 107 )釆用 DCF的方法进行信道竟争。 而在本发明实施例中， 将内置 AP 102看作一类群体， 将其他的 STA看作 另一类群体， 所述其他的 STA包括： 内置 STA 103、 第一外接 STA 105、 第二 外接 STA 106、 第三外接 STA 107。 将第一周期 T1划分为两个时间段， 两个 时间段分别用于这两类群体的数据传输。 具体地， 如图 4所示， 第一周期 T1 包括 APP和竟争期 (CP, Contention Period), APP用于内置 AP 102独享信道， 也就是说， 在 APP内， 内置 AP 102无需和其他 STA进行信道竟争， 可单独 占用信道进行数据传输。 而在 CP内， 其他的 STA还釆用现有技术的 DCF方 式进行信道竟争。
上述信道占用周期的配置是在介质访问控制 （MAC , Media Access Control )层实现的， 配置的方法为： 根据外接 STA的数量设置 AP 占用信道 期的时长与竟争期的时长， 具体地： 如果外接的 STA数量比较多， 则将 APP 的时长与 CP的时长之比设置的比较大， 反之， 如果外接的 STA数量比较少， 则将 APP的时长与 CP的时长之比设置的比较小。 例如， 如果外接 STA数量 为一个， 则 APP的时长与 CP的时长之比可以配置为 1 : 1 , 假设第一周期 T1 的时长为 20毫秒， 则 APP的时长可以配置为 10毫秒， CP的时长可以配置为 10毫秒； 如果外接 STA数量大于一个， 则 APP的时长与 CP的时长之比可以 配置为 3: 2, H没第一周期 T1的时长为 20毫秒， 则 APP的时长可以配置为 12毫秒， CP的时长可以配置为 8毫秒。 另外， 上述配置也可根据用户的指令进行， 具体为： 接收用户指令， 用户 的指令指示了 APP的时长与 CP的时长， 根据用户的指令进行配置。 例如， 在 移动 AP的用户界面上可向用户提供两个输入框， 其中一个输入框用于接收用 户输入的 APP时长， 另一个输入框用于接收用户输入的 CP时长， 在 MAC层 将 APP的时长与 CP的时长分别配置为用户在输入框中所输入的对应数值。当 然， 在实际应用中， 还可釆用其他方法接收用户指令， 此处仅为举例说明。
在实际应用中， 为了防止用户配置不当， 也可提供几种选项， 以只读的方 式显示给用户， 每种选项分别表示 APP的时长与 CP的时长， 以供用户选择。
步骤 302, 当内置 AP检测到 APP的开始端时， 在 APP内占用信道进行 数据传输。
当其他 STA检测到 CP的开始端时， 在 CP内抢占信道进行数据传输， 抢 占信道的方法可以为 DCF方法。
可见， 在本步骤中， 内置 AP在 APP 内能够独享信道进行数据传输， 在 CP内， 内置 AP不再占用信道， 其他的 STA釆用现有的 DCF方法进行信道竟 争。
可见， 在本发明实施例中， 由于在每个信道占用周期配置了 APP以供内 置 AP专用， 内置 AP无需参与信道竟争， 提高了内置 AP的数据传输速率。
同时， 在现有技术中由于第一外接 STA 105、 第二外接 STA 106、 第三外 接 STA 107均外接在内置 AP 102之上， 第一外接 STA 105、 第二外接 STA 106 和 /或第三外接 STA 107需要传输的数据包均需通过内置 AP 102进行传输， 因 此，现有技术中外接的各个 STA也由于内置 AP 102的限制而使得数据传输速 率比较低， 尤其当外接的 STA数量比较多时， 这种情况尤为突出。 在本发明 实施例中， 由于提高了内置 AP 的数据传输速率， 也间接提高了外接至移动 AP的 STA的数据传输速率。
至此， 本流程结束。
本发明实施例将信道占用周期中的第一周期 T1分割为两个时间段： APP 和 CP。 移动 AP 101中的内置 AP 102不参与信道抢占， 在 APP内独享信道进 行数据传输， 而在 CP内， 内置 AP 102外接的 STA以及移动 AP 101中的内置 STA 103釆用 DCF的方法进行信道竟争， 可见， 由于每个信道占用周期配置 了 APP以供内置 AP 102专用， 内置 AP 102无需参与信道竟争， 提高了内置 AP 102的数据传输速率。
实施例二
基于上述信道占用方法的介绍， 图 5 为本发明实施例所提供的一种移动 AP和外接 STA的结构示意图， 如图 5所示， 移动 AP 101包括内置 AP 102和 内置工作站 STA 103 , 所述内置 STA 103通过外接 AP 104接入至互联网， 所 述内置 AP 102连接至少一个外接 STA(第一外接 STA 105、第二外接 STA 106、 第三外接 STA 107 ), 并将所述外接 STA接入互联网。 所述内置 AP 102包括： 第一配置模块 501和第一传输模块 502; 所述第一配置模块 501 , 用于预先在所述内置 AP 102中配置信道占用周 期， 每一信道占用周期包括第一周期， 第一周期包括 AP占用信道期； 所述第一传输模块 502, 用于检测信道占用周期， 当检测到信道占用周期 中所述 AP占用信道期的开始端时， 在所述 AP占用信道期内单独占用信道进 行数据传输。
所述内置 STA 103包括： 第二配置模块 503和第二传输模块 504; 所述第二配置模块 503 , 用于预先在所述内置 STA 103中配置信道占用周 期， 每一信道占用周期包括第一周期， 第一周期进一步包括竟争期； 所述第二传输模块 504, 用于检测信道占用周期， 当检测到信道占用周期 中所述竟争期的开始端时， 在所述竟争期内釆用分布式协调功能 DCF方法竟 争信道进行数据传输。 该设备进一步包括： 接收模块 507;
所述接收模块 507 , 用于接收外部指令， 所述外部指令用于指示 AP占用 信道期的时长与竟争期的时长；
所述第一配置模块 501和第二配置模块 503根据所述外部指令配置 AP占 用信道期的时长与竟争期的时长。
一种外接工作站 STA, 所述外接 STA设备包括： 第三配置模块 506和第 三传输模块 505;
所述第三配置模块 506, 用于预先在所述外接 STA中配置信道占用周期， 每一信道占用周期包括第一周期， 第一周期包括竟争期；
所述第三传输模块 505 , 用于检测信道占用周期， 当检测到信道占用周期 中所述竟争期的开始端时， 在所述竟争期内釆用分布式协调功能 DCF方法竟 争信道进行数据传输。 关于设备部分的详细介绍可参照方法部分的说明， 此处 不予赘述。 综上， 在本发明实施例中， 预先在内置 AP中配置信道占用周期， 每一信 道占用周期包括第一周期， 第一周期包括 AP占用信道期， 当内置 AP检测到 AP占用信道期的开始端时，在 AP占用信道期内单独占用信道进行数据传输， 可见， 本发明实施例在每个信道占用周期配置了 AP占用信道期以供内置 AP 专用， 内置 AP无需参与信道竟争， 提高了内置 AP的数据传输速率。
以上所述，仅为本发明的较佳实施例而已， 并非用于限定本发明的保护范 围。 凡在本发明的精神和原则之内， 所作的任何修改、 等同替换、 改进等， 均 应包含在本发明的保护范围之内。

Claims

权 利 要 求
1、一种信道占用方法，该方法应用于包括内置接入点 AP和内置工作站 STA 的移动 AP中， 其特征在于， 该方法包括： 预先在所述内置 AP中配置信道占用 周期， 每一信道占用周期包括第一周期， 第一周期包括 AP占用信道期， 该方 法还包括：
当内置 AP检测到所述 AP占用信道期的开始端时，在所述 AP占用信道期内 单独占用信道进行数据传输。
2、 根据权利要求 1所述的方法， 其特征在于， 所述内置 AP连接至少一个 外接 STA, 该方法进一步包括：
预先在所述内置 STA和外接 STA中配置信道占用周期， 每一信道占用周期 包括第一周期， 第一周期进一步包括竟争期；
当内置 STA和外接 STA检测到所述竟争期的开始端时， 在所述竟争期内釆 用分布式协调功能 DCF方法竟争信道进行数据传输。
3、 根据权利要求 2所述的方法， 其特征在于， 所述配置信道占用周期的方 法为： 根据外接 STA的数量设置 AP占用信道期的时长与竟争期的时长。
4、 根据权利要求 3所述的方法， 其特征在于， 当外接 STA的数量为一个， 则 AP占用信道期的时长与竟争期的时长之比为 1 : 1 , 当外接 STA的数量大于一 个， 则 AP占用信道期的时长与竟争期的时长之比为 3: 2。
5、 根据权利要求 2所述的方法， 其特征在于， 该方法进一步包括： 接收外 部指令， 所述外部指令用于指示 AP占用信道期的时长与竟争期的时长， 根据 所述外部指令配置 AP占用信道期的时长与竟争期的时长。
6、 一种贴身无线接入点 AP设备， 所述移动 AP包括内置 AP和内置工作站 STA, 所述内置 STA通过外接 AP接入互联网， 所述内置 AP通过所述内置 STA 和外接 STA接入互联网， 其特征在于， 所述内置 AP包括： 第一配置模块和第一 传输模块；
所述第一配置模块， 用于预先在所述内置 AP中配置信道占用周期， 每一 信道占用周期包括第一周期， 第一周期包括 AP占用信道期；
所述第一传输模块， 用于检测信道占用周期， 当检测到信道占用周期中所 述 AP占用信道期的开始端时， 在所述 AP占用信道期内单独占用信道进行数据 传输。
7、 根据权利要求 6所述的设备， 其特征在于， 所述内置 STA包括： 第二配 置模块和第二传输模块；
所述第二配置模块， 用于预先在所述内置 STA中配置信道占用周期， 每一 信道占用周期包括第一周期， 第一周期进一步包括竟争期；
所述第二传输模块， 用于检测信道占用周期， 当检测到信道占用周期中所 述竟争期的开始端时，在所述竟争期内釆用分布式协调功能 DCF方法竟争信道 进行数据传输。
8、 根据权利要求 7所述的设备， 其特征在于， 该设备进一步包括： 接收模 块；
所述接收模块， 用于接收外部指令， 所述外部指令用于指示 AP占用信道 期的时长与竟争期的时长；
所述第一配置模块和第二配置模块根据所述外部指令配置 AP占用信道期 的时长与竟争期的时长。
9、 一种外接工作站 STA, 其特征在于， 所述外接 STA设备包括： 第三配 置模块和第三传输模块；
所述第三配置模块， 用于预先在所述外接 STA中配置信道占用周期， 每一 信道占用周期包括第一周期， 第一周期包括竟争期；
所述第三传输模块， 用于检测信道占用周期， 当检测到信道占用周期中所 述竟争期的开始端时，在所述竟争期内釆用分布式协调功能 DCF方法竟争信道 进行数据传输。
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