WO2006097023A1 - Procede pour decouvrir un peripherique dans un reseau informatique sans fil different - Google Patents

Procede pour decouvrir un peripherique dans un reseau informatique sans fil different Download PDF

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Publication number
WO2006097023A1
WO2006097023A1 PCT/CN2005/002128 CN2005002128W WO2006097023A1 WO 2006097023 A1 WO2006097023 A1 WO 2006097023A1 CN 2005002128 W CN2005002128 W CN 2005002128W WO 2006097023 A1 WO2006097023 A1 WO 2006097023A1
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Prior art keywords
ssid
computer network
wireless computer
array
wireless
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PCT/CN2005/002128
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English (en)
French (fr)
Inventor
Xiaoyu Zhou
Jingnan Huang
Yujin Luo
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Beijing Lenovo Software Ltd.
Lenovo (Beijing) Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Beijing Lenovo Software Ltd., Lenovo (Beijing) Limited filed Critical Beijing Lenovo Software Ltd.
Priority to GB0719647A priority Critical patent/GB2441062B/en
Priority to US11/886,598 priority patent/US20090080390A1/en
Publication of WO2006097023A1 publication Critical patent/WO2006097023A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/18Selecting a network or a communication service
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]

Definitions

  • the present invention relates to techniques for discovering devices in computer networks, and more particularly to a method of discovering devices in different wireless computer networks.
  • the device discovery process When a user uses a device through a computer network, the device discovery process must be completed first, so that information about the device, such as the type of the device, is known. For example: When the client needs to use the projector for projection, you must first find a device of the type found in the computer network to use the device to complete the projection operation.
  • the first type Each device information in the computer network is saved by a server. When the new device accesses the computer network, its device information is registered with the server in the computer network. When the user needs to use the device, access the server through the computer network, obtain the device information saved by the server, and find the device to be used.
  • the second type Each device in the computer network periodically broadcasts an announcement message containing its own related information on the computer network. When the user needs to use the device, it listens to the announcement message to be broadcasted by the computer network where the device is located, 'find the to be used. device.
  • the device to be used by the client can be found in the same computer network. However, when you want to discover a device that is not on the same computer network as the client, the client must switch to the computer network where the device resides before you can use one of the above methods to discover the device.
  • the client when the computer network is a wireless computer network, although each wireless computer network is identified by a wireless network name (SSID), the client can find the wireless computer network corresponding to the SSID by searching for the SSID in the wireless environment.
  • the UE searches for a device that is not in the same wireless computer network as the UE, it must also access the wireless computer network according to the SSID corresponding to the wireless computer network to find the device accessing the network. For example: When the user wants to use a wireless projector, search It is found that there are multiple wireless computer networks available, and the user has to switch to these available wireless computer networks in turn, and one of the above methods is used to know whether there is a wireless projector in these available computer networks. In this way, not only the speed at which the user discovers the device is reduced, but also the complexity of the device found by the user is improved.
  • the technical solution of the present invention is implemented as such - a method of discovering devices in different wireless computer networks, establishing a wireless computer network for the device, the wireless computer network being identified by an SSID having the same An array of device types, the correspondence between the array and the device type used to indicate the device type is set on the client side, and the method includes the steps of:
  • the client in the wireless computer network environment searches for the currently available wireless computer network to obtain an SSID corresponding to the currently available wireless computer network;
  • the UE determines a device type corresponding to the array of the acquired SSID according to the set correspondence, and displays a device icon of the device type corresponding to the SSID.
  • the step of determining the device type corresponding to the array of the acquired SSID according to the set correspondence according to the setting in step B includes:
  • the user end determines an array corresponding to the device type to be discovered according to the set correspondence relationship, determines whether the array corresponding to the device type to be found matches at least one SSID acquired in step A, and in the case of matching, judges There is a certain type of device to be discovered by the user terminal in the wireless computer network corresponding to the matched SSID.
  • the array is a numeric string, a string, or a combination of numbers and characters.
  • the SSID also includes an array for indicating the device.
  • the present invention establishes a wireless computer network for the wireless device, the network is identified by an SSID having an array for indicating the type of the device, and an array and device type for indicating the type of the device are set at the user end. Correspondence between them.
  • the UE can know the device type corresponding to the wireless computer network corresponding to the SSID, and does not need to wait until switching to the wireless computer network as in the prior art to know the wireless computer.
  • the type of device that the network has and the device. Therefore, the method provided by the present invention can make the user terminal fast and simple A device that is not on the same wireless computer network as the client is found.
  • FIG. 1 is a flow chart of a method for quickly discovering a device by using an SSID according to the present invention
  • FIG. 2 is a schematic diagram of a network using an SSID fast discovery device according to an embodiment of the present invention.
  • the invention resets the SSID, so that the reset SSID is used not only to identify the wireless computer network, but also to identify the wireless device in the wireless computer network, so that the user can determine the wireless presence in the wireless computer network corresponding to the SSID according to the SSID. device. '
  • the present invention establishes a peer-to-peer wireless computer network for the wireless device, using the SSID to identify the peer wireless computer network established by the wireless device.
  • the present invention sets the SSID and defines the naming convention of the SSID: Define a part of the array in the SSID to represent the device type, for example: the prefix in the SSID indicates the device type, and through this part of the array in the SSID, it can be known that the wireless computer network has Device type; defines the second part of the array in the SSID to represent different devices of the same device type. For example, several bits following the prefix in the SSID represent different devices of the same device type, and can be learned through the second partial array in the SSID. A device that is found in a wireless computer network.
  • the SSID set by the present invention is used not only to identify wireless computer networks, but also to identify devices in a wireless computer network.
  • the array of the present invention may be a string of characters, a string of numbers, or a combination of characters and data.
  • the first partial array and the second partial array of the present invention do not indicate the specific positions of the respective arrays in the SSID, and the present invention can also place the second partial array in the foremost position in the SSID, but merely indicates that the SSID will have this. Two parts.
  • the correspondence between the array and the device type is set on the user end, and the correspondence between the array and the device type set on the client side should be between the array and the device type represented in the SSID.
  • the correspondence is the same.
  • the SSID corresponding to the wireless computer network can be queried.
  • the device type corresponding to the array in the searched SSID is determined according to the correspondence relationship set on the client side, and the device corresponding to the device type of the wireless computer network corresponding to the SSID is displayed, and the device type is displayed.
  • the wireless device can be accessed. computer network.
  • FIG. 1 is a flowchart of a method for quickly discovering a device by using an SSID according to the present invention. The specific steps are as follows: Step 100: A client searches for a current wireless computer network to obtain an SSID of all current wireless computer networks.
  • Step 101 The UE determines whether there is an unprocessed SSID, and if yes, performs step 102; otherwise, ends.
  • Step 102 The client checks whether the array in the unprocessed SSID matches the array set by the client for identifying the device type. If yes, go to step 103; otherwise, go to step 101.
  • Step 103 The UE determines, according to the device type corresponding to the matched array, the device type in the wireless computer network corresponding to the SSID, and displays it, and returns to step 101.
  • the client can obtain an array of device types for identifying the device, and the array corresponds to the device type of the device.
  • the wireless projector establishes a wireless computer network and sets its SSID to an array of corresponding wireless projector types.
  • the user can discover the presence of wireless in a wireless computer network by searching for a wireless computer network including the SSID representing the wireless projector array. Projector; After discovering the wireless computer network to which the wireless projector belongs, the user does not have to switch to the wireless computer network, but only switches to the wireless computer network when the wireless projector is to be used.
  • the SSID corresponding to the wireless computer network where the wireless projector is located.
  • the SSID is set to: WIRELESS-PROJECTOR- 0010C626C0B1, where WIRELESS-PROJECTOR is a fixed value, which is used to identify the device type as a wireless projector, and 0010C626C0B1 is used to identify Wireless Projector, "0010C626C0B1"
  • WIRELESS-PROJECTOR is a fixed value, which is used to identify the device type as a wireless projector
  • 0010C626C0B1 is used to identify Wireless Projector
  • the plurality of wireless computer networks are network 1, network 2, and network 3, wherein network 1 is through a wireless access point (AP) mode. Connected; Network 2 is connected by peer-to-peer (ad hoc) mode; Network 3 is a wireless projector, and the corresponding SSID of Network 3 is WIRELESS-PROJECTOR- 0010C626C0B1.
  • the network 3 includes a wireless projector.
  • the client can select the wireless computer network to access according to its own needs. If the client needs to use a wireless projector, you can directly select access network 3 and use the wireless projector in network 3.

Description

一种发现在不同无线计算机网络中的设备的方法
技术领域
本发明涉及发现在计算机网络中的设备的技术, 特别涉及一种发现在不同无 线计算机网络中的设备的方法。
背景技术
随着计算机技术和网络技术的迅猛发展, 计算机网络逐渐融入人们的工作和 生活中。在办公场所和家庭环境中, 将各种设备通过计算机网络连接成一个整体, 将使人们对各种设备的使用更为方便。
用户端通过计算机网络使用一个设备时, 必须首先完成设备发现的过程, 从 而了解设备的相关信息, 如了解设备的类型等。 例如: 当用户端需要使用投影仪 进行投影吋, 必须首先在计算机网络中找到类型为投影仪的设备, 才能使用该设 备完成投影操作。
目前, 用户端通过计算机网络发现设备的方法主要有三种。 第一种: 计算机 网络中的各个设备信息由一个服务器保存, 当新设备接入计算机网络时, 向计算 机网络中的服务器注册其设备信息。 当用户端需要使用设备时, 通过计算机网络 访问服务器, 获取服务器保存的设备信息, 查找要使用的设备。 第二种: 计算机 网络中的各个设备定期在计算机网络广播包含自身相关信息的宣告消息, 当用户 端需要使用设备时, 监听要使用设备所在的计算机网络广播的宣告消息, '査找到 要使用的设备。 第三种: 当用户端需要使用设备时, 在计算机网络中广播査找设 备信息的消息, 等待收到广播并且符合查找设备信息的设备响应用户端。
使用上述方法的任何一种, 都可以在同一计算机网络中发现用户端要使用的 设备。 但是, 当要发现与用户端不处在同一计算机网络的设备时, 用户端必须切 换到设备所在的计算机网络后, 才能使用上述方法中的一种发现设备。
相应地, 当计算机网络为无线计算机网络时, 虽然每个无线计算机网络都用 无线网络名称(SSID)进行标识, 用户端可以通过搜索无线环境中的 SSID查找到 SSID所对应的无线计算机网络。 但是, 当用户端搜索与用户端不处于同一无线计 算机网络中的设备时,也必须根据无线计算机网络对应的 SSID接入到该无线计算 机网络后才能查找接入该网络的设备。 例如: 当用户端要使用无线投影仪时, 搜 索到有多个可用的无线计算机网络, 用户端要依次切换到这些可用的无线计算机 网络中, 采用上述方法中的一种, 才能了解这些可用的计算机网络中是否存在无 线投影仪。 这样, 不仅降低了用户端发现设备的速度, 而且提高了用户端发现设 备的复杂程度。
发明内容
有鉴于此, 本发明的主要目的在于提供一种发现在不同无线计算机网络中的 设备的方法, 该方法能够使用户端快速并且简便地发现与用户端不处于同一无线 计算机网络的设备。
根据上述目的, 本发明的技术方案是这样实现的- 一种发现在不同无线计算机网络中的设备的方法, 给设备建立无线计算机网络, 该无线计算机网络用 SSID来标识, 该 SSID具有用于标明设备类型的数组, 在用户端 设置用于标明设备类型的数组与设备类型之间的对应关系, 该方法包括步骤:
A、在无线计算机网络环境中的用户端搜索当前可用的无线计算机网络, 以获取到 与当前可用的无线计算机网络相对应的 SSID;
B、 用户端根据设置的对应关系确定与所获取到的 SSID具有的数组相对应的设备 类型, 并显示与该 SSID相对应的设备类型的设备图标。
当用户端要发现确定类型的设备时, 步骤 B所述的根据设置的对应关系确定与所 获取到的 SSID具有的数组相对应的设备类型的步骤包括:
Bl、 用户端根据设置的对应关系确定要发现的设备类型相对应的数组, 判断要发 现的设备类型相对应的数组是否和步骤 A获取到的至少一个 SSID匹配, 并且在匹配 的情况下, 判断在与所匹配的 SSID相对应的无线计算机网络中存在用户端要发现的 确定类型的设备。
所述的数组为数字串、 字符串或者数字与字符的组合串。
所述 SSID还包括用于标明设备的数组。
从上述方案可以看出, 本发明给无线设备建立无线计算机网络, 该网络用 SSID标识, 该 SSID标识中具有用于标明设备类型的数组, 在用户端设置用于标 明设备类型的数组与设备类型之间的对应关系。 用户端通过查找无线环境中的 SSID, 就可以得知对应于该 SSID对应的无线计算机网络中具有的设备类型, 而不 需要像现有技术那样等到切换到无线计算机网络中后才能获知该无线计算机网络 具有的设备类型以及设备。 因此, 本发明提供的方法可以使用户端快速并且简便 地发现与用户端不处于同一无线计算机网络的设备。
附图说明
图 1为本发明采用 SSID快速发现设备的方法流程图;
图 2为本发明采用 SSID快速发现设备实施例的网络示意图。
具体实施方式
为了使本发明的目的、 技术方案和优点更加清楚明白, 以下举具体实施例并 参照附图, 对本发明进行进一步详细的说明。
本发明重新设置 SSID, 使重新设置的 SSID不仅用于标识无线计算机网络, 而且用于标识无线计算机网络中的无线设备,从而使用户端根据 SSID就可以确定 SSID对应的无线计算机网络中存在的无线设备。 '
本发明给无线设备建立对等的无线计算机网络, 使用 SSID来标识该无线设 备建立的对等的无线计算机网络。 本发明对 SSID进行设置, 定义 SSID的命名规 范: 定义 SSID 中的一部分数组表示设备类型, 例如: SSID 中的前缀表示设备类 型, 通过 SSID中的这部分数组, 就能够得知无线计算机网络中具有的设备类型; 定义 SSID中的第二部分数组表示同一设备类型的不同设备, 例如 SSID中的前缀 后面的若干位表示同一设备类型的不同设备, 通过 SSID中的第二部分数组, 就能 够得知无线计算机网络中具有的设备。这样, 本发明设置的 SSID就不仅用于标识 无线计算机网络, 而且用于标识无线计算机网络中的设备。
本发明所述的数组可以为字符串, 也可以为数字串, 还可以为字符和数据的 组合串。
本发明所述的第一部分数组、第二部分数组并不是表明各个数组在 SSID中的 具体位置, 本发明也可以将第二部分数组放在 SSID中的最前面位置, 而只是表明 SSID会具有这两个部分。
相应地, 为了使用户端识别 SSID表示的设备类型, 在用户端设置数组与设 备类型的对应关系,在用户端设置的数组与设备类型的对应关系应该和 SSID中表 示的数组与设备类型之间的对应关系相同。
当用户端在搜索无线计算机网络的过程中, 就可以查询无线计算机网络对应 的 SSID。 根据在用户端设置的对应关系确定与搜索到的 SSID 中的数组相对应的 设备类型, 说明对应该 SSID的无线计算机网络具有该种设备类型的设备, 将该种 设备类型进行显示。 当用户端需要使用该设备类型的设备时, 则可以接入该无线 计算机网络。
图 1为本发明采用 SSID快速发现设备的方法流程图, 其具体步骤为: 步骤 100、 用户端搜索当前的无线计算机网络, 获取当前所有无线计算机网 络的 SSID。
步骤 101、 用户端判断是否还有未处理的 SSID, 如果是, 执行步骤 102; 否 则, 结束。
步骤 102、用户端检査未处理的 SSID中的数组是否与用户端设置的用于标识 设备类型的数组相匹配, 如果是, 执行步骤 103; 否则, 执行步骤 101。
步骤 103、 用户端根据所匹配的数组对应的设备类型确定该 SSID对应的无线 计算机网络中具有的设备类型, 显示出来, 返回步骤 101。
用户端在安装设备驱动时, 就可以获取用于标识该设备的设备类型的数组, 将数组和该设备的设备类型相对应即可。
以下以无线投影仪为例, 对本发明进行进一步说明。
无线投影仪建立无线计算机网络, 并设置其 SSID为对应无线投影仪类型的 数组,用户端可以通过搜索到包括表示无线投影仪数组的 SSID对应的无线计算机 网络来发现某个无线计算机网络中存在无线投影仪; 在发现无线投影仪所属的无 线计算机网络后, 用户端并不一定要切换到该无线计算机网络中, 而是只有在要 使用无线投影仪时, 才切换到该无线计算机网络中。
因此, 用户端发现无线投影仪的整个过程为:
首先, 对于无线投影仪所在无线计算机网络对应的 SSID进行设置, 假设该 SSID设置为: WIRELESS- PROJECTOR- 0010C626C0B1 , 其中 WIRELESS- PROJECTOR为 固定值, 用于标识设备类型为无线投影仪, 0010C626C0B1用于标识无线投影仪, " 0010C626C0B1 " 这 12位的数组定义了一台无线投影仪设备, 不同的 12位数组 定义不同的投影仪设备。
其次, 假设在一个办公环境中包含多个无线计算机网络, 如图 2所示, 这多 个无线计算机网络为网络 1、网络 2和网络 3,其中网络 1是通过无线接入点(AP) 模式连接的; 网络 2是通过对等 (ad hoc ) 模式连接的; 网络 3就是无线投影仪, 网络 3对应的 SSID为 WIRELESS-PROJECTOR- 0010C626C0B1。
最后, 当用户端进入此办公网络环境时, 可通过搜索此办公网络环境得到当 前可用的三个无线网络: 网络 1、 网络 2和网络 3, 并且通过网络 3对应的 SSID, 即 WIRELESS- PROJECTOR-0010C626COB1 , 根据该 SSID的前缀部分与投影仪类型对 应的数组 WIRELESS- PROJECTOR匹配, 得知网络 3中包含一台无线投影仪。用户端 可以根据自己的需要选择要接入的无线计算机网络。 如果用户端需要使用无线投 影仪, 则可以直接选择接入网络 3, 使用网络 3中的无线投影仪。
以上所述仅为本发明的较佳实施例而已, 并不用以限制本发明, 凡在本发明 的精神和原则之内所做的任何修改、 等同替换和改进等, 均应包含在本发明的保 护范围之内。

Claims

权 利 要 求
1、一种发现在不同无线计算机网络中的设备的方法, 其特征在于, 给设备建立无 线计算机网络, 该无线计算机网络用 SSID来标识, 该 SSID具有用于标明设备类型的 数组, 在用户端设置用于标明设备类型的数组与设备类型之间的对应关系, 该方法包 括步骤:
A、在无线计算机网络环境中的用户端搜索当前可用的无线计算机网络, 以获取到 与当前可用的无线计算机网络相对应的 SSID;
B、 用户端根据设置的对应关系确定与所获取到的 SSID具有的数组相对应的设备 类型, 并显示与该 SSID相对应的设备类型的设备图标。
2、 如权利要求 1所述的方法, 其特征在于, 当用户端要发现确定类型的设备时, 步骤 B所述的根据设置的对应关系确定与所获取到的 SSID具有的数组相对应的设备 类型的步骤包括:
Bl、 用户端根据设置的对应关系确定要发现的设备类型相对应的数组, 判断要发 现的设备类型相对应的数组是否和步骤 A获取到的至少一个 SSID匹配, 并且在匹配 的情况下, 判断在与所匹配的 SSID相对应的无线计算机网络中存在用户端要发现的 确定类型的设备。
3、 如权利要求 1所述的方法, 其特征在于, 所述的数组为数字串、字符串或者数 字与字符的组合串。
4、 如权利要求 1所述的方法, 其特征在于, 所述 SSID还包括用于标明设备 的数组。
PCT/CN2005/002128 2005-03-18 2005-12-08 Procede pour decouvrir un peripherique dans un reseau informatique sans fil different WO2006097023A1 (fr)

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