WO2013152633A1 - 无线局域网络的发现与选择方法、设备及系统与终端 - Google Patents

无线局域网络的发现与选择方法、设备及系统与终端 Download PDF

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Publication number
WO2013152633A1
WO2013152633A1 PCT/CN2013/070989 CN2013070989W WO2013152633A1 WO 2013152633 A1 WO2013152633 A1 WO 2013152633A1 CN 2013070989 W CN2013070989 W CN 2013070989W WO 2013152633 A1 WO2013152633 A1 WO 2013152633A1
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WIPO (PCT)
Prior art keywords
wireless access
access point
terminal
list
wireless
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Application number
PCT/CN2013/070989
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English (en)
French (fr)
Inventor
赵其勇
马新友
陈颖浩
贺宁
Original Assignee
华为技术有限公司
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.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP13775954.4A priority Critical patent/EP2824870B1/en
Publication of WO2013152633A1 publication Critical patent/WO2013152633A1/zh
Priority to US14/511,707 priority patent/US9648550B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/16Discovering, processing access restriction or access information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/14Reselecting a network or an air interface
    • 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
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W64/00Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H04W64/003Locating users or terminals or network equipment for network management purposes, e.g. mobility management locating network equipment
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/14Reselecting a network or an air interface
    • H04W36/144Reselecting a network or an air interface over a different radio air interface technology
    • H04W36/1446Reselecting a network or an air interface over a different radio air interface technology wherein at least one of the networks is unlicensed
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W64/00Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H04W64/006Locating users or terminals or network equipment for network management purposes, e.g. mobility management with additional information processing, e.g. for direction or speed determination
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies
    • H04W84/02Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10Small scale networks; Flat hierarchical networks
    • H04W84/12WLAN [Wireless Local Area Networks]

Definitions

  • the embodiments of the present invention relate to the field of communications technologies, and in particular, to a method and device for discovering and selecting a wireless local area network (LAN). Background technique
  • Wireless fidelity is a wireless local area network that can wirelessly access terminals such as personal computers and handheld devices (such as personal digital assistants (PDAs) and mobile phones).
  • WLAN wireless fidelity
  • WiFi hotspots are distributed throughout airports, coffee shops, hotels, bookstores, and campuses, allowing users to access the Internet via email, web, and streaming media, providing users with wireless broadband Internet access.
  • WiFi is also a fast and convenient way to get online at home, in the office or on the go.
  • WiFi is used to implement packet switching (Packet).
  • Switch PS
  • PS Packet
  • Data shunting, reducing congestion in cellular data networks is gaining widespread acceptance from operators around the world and entering a period of rapid advancement.
  • WiFi offloading is a technology that uses WiFi to offload data traffic.
  • major operators are deploying a large number of WiFi hotspots in order to achieve data traffic splitting in 3G networks and future 4G networks.
  • the WiFi-capable terminal is usually provided with a corresponding WiFi module.
  • the WiFi module Since the WiFi is always turned on and the power consumption is very large, the WiFi module is opened when the user uses the device, and the wireless access point that can be accessed is searched for (Acess Point; AP) list, then select an AP to access.
  • AP Access Point
  • the prior art is found to have at least the following drawbacks: In the prior art, the user cannot determine the location where the WiFi hotspot is located, and cannot determine the timing of turning on the WiFi function. Users usually only open the WiFi module when they want to use WiFi, and try to search for the corresponding AP list that can be accessed. When the search is not available, the WiFi module is turned off. The network cannot assist the terminal to discover and select a WiFi hotspot in the area where the terminal is located, thereby accessing the WLAN network. Therefore, the use of WiFi discovery and selection in the prior art is inefficient. Summary of the invention
  • Embodiments of the present invention provide a method and a device, a system, and a terminal for discovering and selecting a wireless local area network, which are used to make up for the disadvantages of low efficiency of WiFi discovery and selection in the prior art, and improve the efficiency of use of WiFi discovery and selection. .
  • an embodiment of the present invention provides a method for discovering and selecting a wireless local area network, including: when initiating packet switched data to a cellular network, sending a registration request to a wireless local area network discovery and selection device;
  • an embodiment of the present invention further provides a method for discovering and selecting a wireless local area network, including:
  • the embodiment of the present invention further provides a terminal, including:
  • a sending module configured to send a registration request to the WLAN discovery and selection device when initiating packet switched data to the cellular network
  • a receiving module configured to receive a notification message sent by the WLAN discovery and selection device, where the notification message carries access parameter information
  • a selection module configured to select, according to the access parameter information, a wireless local area network corresponding to the target wireless access point.
  • the embodiment of the present invention further provides a wireless local area network discovery and selection device, including:
  • a receiving module configured to receive a registration request sent by the terminal, where the registration request is initiated when the terminal initiates packet switching data to the cellular network;
  • An obtaining module configured to acquire access parameter information when the WLAN is required to perform offloading, by using the WLAN, the packet exchange data in the cellular network;
  • a sending module configured to send, to the terminal, a notification message that carries the access parameter information, so that the terminal selects a wireless local area network corresponding to the target wireless access point according to the access parameter information.
  • an embodiment of the present invention further provides a wireless local area network discovery and selection system, including the terminal as described above and the wireless local area network discovery and selection device as described above.
  • the method and device for discovering and selecting a wireless local area network (WLAN) in the embodiment of the present invention sends a registration request to the WLAN discovery and selection device; and receives the notification sent by the WLAN discovery and selection device. a message, the notification message is sent when the WLAN discovery and selection device determines that the WLAN is used to offload packet-switched data in the cellular network, where the notification message carries the access parameter information; and the target wireless access point is selected according to the access parameter information.
  • the foregoing WLAN discovery and selection operations are performed, thereby effectively improving the efficiency of WiFi discovery and selection.
  • FIG. 1 is a flowchart of a method for discovering and selecting a WLAN according to an embodiment of the present invention.
  • FIG. 2 is a flowchart of a method for discovering and selecting a WLAN according to another embodiment of the present invention.
  • FIG. 3 is a signaling diagram of a WLAN discovery and selection method according to an embodiment of the present invention.
  • FIG. 4 is a signaling diagram of a WLAN discovery and selection method according to another embodiment of the present invention.
  • FIG. 5 is a signaling diagram of a WLAN discovery and selection method according to another embodiment of the present invention.
  • FIG. 6 is a signaling diagram of a WLAN discovery and selection method according to still another embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a terminal according to another embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a WLAN discovery and selection device according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a WLAN discovery and selection system according to an embodiment of the present invention.
  • FIG. 11 is a flowchart of a WLAN discovery and selection method according to still another embodiment of the present invention.
  • FIG. 12 is a flowchart of a WLAN discovery and selection method according to still another embodiment of the present invention.
  • FIG. 13 is a schematic structural diagram of a WLAN discovery and selection device according to still another embodiment of the present invention.
  • FIG. 14 is a schematic structural diagram of an AC according to an embodiment of the present invention.
  • FIG. 15 is a schematic structural diagram of a WLAN discovery and selection system according to another embodiment of the present invention.
  • the technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention.
  • the embodiments are a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution Advanced
  • UMTS Universal Mobile Telecommunication System
  • a wireless access network may include different network elements in different systems.
  • the network elements of the radio access network in LTE and LTE-A include an eNB (eNodeB, evolved base station), and the network element of the radio access network in WCDMA (Wideband Code Division Multiple Access) includes the RNC ( Radio Network Controller, Wireless Network Controller) and NodeB, similarly, other wireless networks such as WiMax (Worldwide Interoperability for Microwave Access) can also use a scheme similar to the embodiment of the present invention, but only in the base station system.
  • the related modules may be different, and the embodiments of the present invention are not limited. However, for convenience of description, the following embodiments will be described by taking an eNodeB as an example.
  • the terminal may also be referred to as a user equipment (UE, User).
  • UE user equipment
  • FIG. 1 is a flowchart of a method for discovering and selecting a WLAN according to an embodiment of the present invention.
  • the execution body of the discovery and selection method of the WLAN in this embodiment may be a terminal.
  • the method for selecting and selecting the embodiment may specifically include the following steps:
  • the terminal initiates packet switching data to the cellular network, sending a registration request to the WLAN discovery and selection device;
  • the terminal receives a notification message sent by the WLAN discovery and selection device.
  • the notification message in this embodiment is sent when the WLAN discovery and selection device determines that the WLAN is used to offload packet-switched data in the cellular network, and the notification message carries the access parameter information.
  • the notification message in the embodiment of the present invention may also be referred to as a WiFi notification message.
  • the terminal selects a WLAN corresponding to the target AP according to the access parameter information.
  • the above steps 100-103 may specifically be a client software installed in the terminal to implement detection of the terminal, or may be implemented by a software module or a hardware module preset in the terminal, and initiate a grouping to the cellular network at the terminal.
  • a registration request is sent to the WLAN discovery and selection device.
  • the terminal sends a registration request to the WLAN discovery and selection device, the terminal has WiFi capability.
  • the identifier of the terminal supporting the WiFi capability may also be carried in the registration request.
  • the WLAN discovery and selection method of the embodiment when initiating packet-switched data to the cellular network, sending a registration request to the WLAN discovery and selection device; receiving a notification message sent by the WLAN discovery and selection device, the notification message being a WLAN discovery and selection device Determining that the WLAN is required to perform the offloading of the packet switched data in the cellular network, the notification message carries the access parameter information; and the target wireless access point is selected according to the access parameter information.
  • the terminal accessing the access parameter information carried in the notification message sent by the WLAN discovery and selection device may specifically include the following situations:
  • the access parameter information may include a traffic off policy message.
  • the offload policy message of this embodiment may be set in advance in the WLAN discovery and selection module.
  • the target AP is selected by the terminal side, and the corresponding traffic policy message can be used to indicate the AP with the best signal strength or the preset frequency band AP.
  • the preset frequency band can be a 2.4G frequency band or a 5G frequency band.
  • the preset frequency band can also be other frequency bands, which is no longer - for example. All the preset frequency bands in the embodiment of the present invention may be a 2.4G frequency band or a 5G frequency band, or other frequency bands, which are not described in the following embodiments.
  • the method may further include the following steps: the terminal scans the WLAN to obtain the first AP list, where the first AP list includes at least An AP identity, and the signal strength of each AP and/or the frequency band of each AP, may also include the SSID of each AP and the like.
  • the splitting policy message indicates that the AP with the best signal strength is selected
  • the terminal scans the WLAN the signal strength of each AP is also obtained, and the signal strength of each AP is identified in the first AP list.
  • the AP that selects the preset frequency band for the traffic splitting policy when the terminal scans the WLAN, the frequency band of each AP is also obtained, and the frequency band of each AP is identified in the first AP list.
  • the terminal before the terminal scans the WLAN, the terminal further includes the WiFi function of the terminal, and all subsequent embodiments are similar, and are not described again.
  • the terminal selects a target according to the access parameter information.
  • the AP may specifically include: the terminal selects the target AP from the first AP list according to the offload policy message.
  • the terminal may select the target AP from the first AP list, for example, select the AP with the best signal strength from the obtained AP, or Select the AP of the preset band.
  • the access parameter information includes a service set identifier (SSID) of the AP of the WLAN that can be accessed.
  • the terminal scans the WLAN, and the first AP list may include an AP that does not belong to the same mobile operator network as the current cellular network, or an AP that does not share the network with the current cellular network.
  • the terminal cannot access the target AP.
  • the terminal scans.
  • the AP with the strongest signal obtained by the WLAN is the AP of the Unicom.
  • the traffic splitting policy message is used to indicate the AP with the best selection signal. Even if the AP of the Unicom is selected, the terminal cannot access the AP. Therefore, the SSID of the AP that can access the WLAN is also required to be included in the traffic policy.
  • the SSID of the AP that can access the WLAN is specifically used to identify the operator to which the AP can access.
  • the SSID of the AP of the WLAN that can be accessed in this embodiment may specifically include multiple.
  • the SSID of the AP of the WLAN that can be accessed in this embodiment should at least include all SSIDs of the APs of the mobile network.
  • the SSID here may include all SSIDs of the APs of the mobile network and all SSIDs of the APs of the Unicom network.
  • the offloading policy message in this embodiment may also be preset in the WLAN discovery and selection module, and may be used to indicate an AP that selects the best signal strength or an AP that selects a preset frequency band.
  • the method may further include the following steps: the terminal starts the WiFi function, and scans the WLAN to obtain the first AP list, where the first The AP list includes at least one AP identifier and an SSID of the AP of the WLAN corresponding to each AP.
  • the terminal selects the target AP according to the access parameter information, which may include: the terminal according to the offload policy message, the SSID of the AP of the WLAN that can be accessed, and the first AP list, from the first Select the target AP in the AP list.
  • the frequency band is selected from the at least one AP included in the first AP list.
  • the terminal may first obtain, from the first AP list, that the SSID belongs to the WLAN that can be accessed.
  • the AP of the SSID selects the target AP from the obtained AP according to the splitting policy message, for example, selecting the AP with the best signal strength from the acquired AP, or selecting the AP of the preset frequency band.
  • the access parameter information may include the access parameter information including a offload policy message and a second AP list.
  • the third case can be used in the first scenario in which the terminal sends the location request carrying the location information of the terminal to the WLAN discovery and selection device.
  • the location information of the terminal may be the cell ID of the terminal, or the latitude and longitude information of the terminal, or other location information that can identify the terminal.
  • the second AP list is obtained by the WLAN discovery and selection device, after acquiring the registration request, acquiring the attribute information of each AP in the AP identifier corresponding to the location information of the terminal, and according to the location information of the terminal, such as the cell where the terminal is located. (Cell) ID)
  • the attribute information of each AP in the corresponding AP identifier is obtained by identifying and obtaining the availability of each AP.
  • the second AP list includes at least one AP identifier that can be accessed by the terminal and can be provided by the terminal. Attribute information of each AP accessed; the attribute information includes at least one of a signal to noise ratio, a load, and a throughput.
  • the traffic off policy message in this embodiment may be specifically used to indicate that the AP with the best signal strength is selected, the AP with the least load is selected, or the AP with the preset frequency band is selected.
  • the WLAN discovers the attribute information of each of the APs corresponding to the location information of the terminal, and may include the following two methods:
  • the first mode is pre-stored in the WLAN discovery and selection device.
  • the attribute information of all APs includes attribute information of all APs in each AC of the AC.
  • the attribute information of each AP includes the signal-to-noise ratio.
  • At least one of load, throughput, and throughput may also include a frequency band of the AP.
  • the WLAN discovery and selection device may be obtained from all ACs in advance, or all ACs periodically report to the WLAN discovery and selection device.
  • the WLAN discovery and selection device may acquire the attribute of each AP in all the AP identifiers corresponding to the location information of the terminal from the WLAN to discover the attribute information of all APs in all the ACs stored in the WLAN. information.
  • the WLAN discovery and selection device In the first way, all of the ACs that are pre-fetched by the WLAN discovery and selection device are all The attribute information of the AP may not be real-time.
  • the WLAN discovery and selection device also stores the mapping between the location information of the terminal and the AP, and the mapping between the AP and the AC. .
  • Table 1 below shows the location information of the terminal as the Cell ID, and the correspondence between the Cell ID and the AP and the correspondence between the AP and the AC are combined in one table.
  • the WLAN discovery and selection device After the WLAN discovery and selection device receives the registration request, the WLAN discovery and selection device first obtains all the AP identifiers corresponding to the cell ID according to the cell ID of the terminal and the correspondence between the cell ID and the AP, and according to the correspondence between the AP and the AC. Obtaining each AC identifier corresponding to all the AP identifiers corresponding to the Cell ID, and then the WLAN discovery and selection device interacts with each AC to obtain attribute information of all APs corresponding to
  • the attribute information of the AP includes at least one of a signal to noise ratio of the AP, a load of the AP, and a throughput of the AP, and may also include a frequency band to which the AP belongs.
  • the AP's attribute information must include the AP's load.
  • the WLAN discovery and selection device identifies the second AP list obtained by the availability of each AP according to the attribute information of each AP, and specifically, the attribute information threshold of the AP availability is stored in the WLAN discovery and selection module. For example, the signal to noise ratio threshold of the AP, the load threshold of the AP, and the throughput threshold of the AP are stored.
  • the load of the AP is greater than the threshold, or the throughput of the AP is greater than the throughput threshold, It is determined that the AP is unavailable, otherwise the AP is available when the signal to noise ratio of the AP is less than or equal to the signal to noise ratio threshold, the load of the AP is less than or equal to the threshold, or the throughput of the AP is less than or equal to the throughput threshold.
  • identifying the availability of each AP can obtain a second AP list with availability.
  • the attribute information of the AP may further include a frequency band of the AP, for example, the AP belongs to the 2.4G frequency band or the 5G frequency band.
  • the terminal when the offloading policy information is an AP that selects a preset frequency band, the terminal may directly select according to the attribute information of the AP, and may not scan the frequency band of each AP.
  • the step 102 may further include the following steps before the terminal selects the target AP according to the access parameter information:
  • the function is to scan the WLAN to obtain the first AP list.
  • the first AP list includes at least one AP identifier, and the first AP list may also identify the signal strength of each AP.
  • the terminal selects the target AP according to the access parameter information, which may include: the terminal from the intersection of the first AP list and the second AP list according to the offload policy message.
  • Select the target AP For example, the terminal may first select at least one AP from the intersection of the scanned first AP list and the WLAN discovery and selection module sending the second AP list with availability (ie, both the terminal scanable and the availability), and then And selecting, from the at least one AP, an AP with the best signal strength, selecting an AP with the smallest load, or selecting an AP of the preset frequency band as the target AP.
  • the third case may also be used in step 100, where the terminal sends a registration request to the WLAN discovery and selection device in the second scenario that carries the first AP list.
  • the method may further include the following steps: the terminal starts the WiFi function, and scans the WLAN to obtain the first AP list, where the first AP list is included. At least one AP identifier, and the signal strength of each AP may also be identified in the first AP list.
  • the step 100 "the terminal sends a registration request to the WLAN discovery and selection device" may include: the terminal sending a registration request carrying the first AP list to the WLAN discovery and selection device.
  • the second AP list in the scenario is selected by the WLAN discovery and selection device from the first AP list; the second AP list includes at least one AP identifier that can be accessed by the terminal and can be accessed by the terminal.
  • the attribute information of each AP; the offloading policy message is used to indicate that the AP with the best signal strength is selected, the AP with the smallest load is selected, or the AP of the preset frequency band is selected; wherein the frequency band of each AP can be scanned and acquired on the terminal side, Can be obtained from the AC, carried in the genus of the AP In the sexual information.
  • the WLAN discovery and selection device may pre-store attribute information of all APs in all ACs (at least one of the target signal-to-noise ratio, load, and throughput of the AP, and the frequency band of the AP, etc.), which may be
  • the WLAN discovery and selection device is obtained from all ACs in advance, or all ACs periodically report to the WLAN discovery and selection device.
  • the WLAN discovery and selection device may obtain the attribute information corresponding to each AP in the first AP list from the attribute information of all the APs in the stored AC, and identify the availability of each AP according to the attribute information of each AP.
  • the AP having availability in the first AP list forms a second AP list, and the second AP list may further include a frequency band of each AP having availability.
  • the WLAN discovery and selection device pre-stores the mapping between the AP and the AC. After receiving the registration request that carries the first AP list, the WLAN discovery and selection device may interact with the AC corresponding to each AP in the first AP list. The attribute information of each AP is obtained, and then the AP with availability is identified from the first AP list to form a second AP list. The attribute information of the AP and the AP having the availability are identified according to the attribute information of each AP. For details, refer to the description of the related embodiment of the second mode in the first scenario in the foregoing third case. Let me repeat.
  • the terminal selects the target AP according to the access parameter information, which may include: the terminal selects the target AP from the second AP list according to the offload policy message. For example, the terminal selects the AP with the best signal strength, selects the AP with the lowest load, or selects the AP with the preset frequency band as the destination AP.
  • the access parameter information may include: the terminal selects the target AP from the second AP list according to the offload policy message. For example, the terminal selects the AP with the best signal strength, selects the AP with the lowest load, or selects the AP with the preset frequency band as the destination AP.
  • the access parameter information includes the identity of the target AP.
  • the fourth case is applied in a scenario in which the terminal sends a registration request to the WLAN discovery and selection device to carry the first AP list.
  • the method may further include the following steps: the terminal starts the WiFi function, and scans the WLAN to obtain the first AP list, where the first AP list is included. At least one AP identifier, and the signal strength of each AP may also be identified in the first AP list.
  • step 100 the terminal sends a registration request to the WLAN discovery and selection device
  • the method may include: the terminal sending a registration request carrying the first AP list to the WLAN discovery and selection device.
  • the identifier of the target AP is that the WLAN discovery and selection device interacts with the AC according to the first AP list, and selects the second AP list from the first AP list; and obtains the second AP list according to the traffic policy message;
  • the second AP list includes at least one AP identifier that can be accessed by the terminal and attribute information of each AP that can be accessed by the terminal.
  • the offload policy message may be used to indicate that the AP with the least load is selected, or Set the AP of the band.
  • the difference between the fourth scenario and the second scenario of the foregoing third scenario is: in the fourth scenario, the target AP obtained from the second AP list according to the offload policy message in the WLAN discovery and selection device, and the third
  • the second scenario is performed on the terminal side, and the rest of the implementation process is the same.
  • the method may further include the following steps:
  • the terminal When the terminal does not detect the target AP in the first preset time period, it is determined that the traffic off fails, and the WiFi function is turned off;
  • the WiFi function is turned off
  • the terminal determines that the WLAN is inconvenient to use and turns off the WiFi function.
  • the terminal may report the failure result to the WLAN discovery and selection device, so that the WLAN discovery and selection device performs handover success rate statistics and whether the update needs to adopt the WLAN to the cellular network.
  • An operation such as an algorithm for offloading packet-switched data.
  • the first AP list obtained by the WLAN scanned by the terminal may identify the signal strength of each AP, the frequency band of each AP, and each AP. SSID and more.
  • the attribute information of the AP that is obtained by the WLAN discovery and the selection device may include at least one of a signal to noise ratio, a load, and a throughput of the AP, and may also include an AP. Frequency band and so on.
  • FIG. 2 is a flowchart of a method for discovering and selecting a WLAN according to another embodiment of the present invention.
  • the execution body of the WLAN discovery and selection method of this embodiment is a WLAN discovery and selection device.
  • the method for discovering and selecting the WLAN in this embodiment may specifically include:
  • the WLAN discovery and selection device receives a registration request sent by the terminal;
  • the registration request is initiated after the WiFi function is enabled when the terminal initiates packet switched data to the cellular network. Therefore, the WLAN discovery and selection device negotiates with the terminal, and the sending of the registration request indicates that the terminal supports the WiFi capability, or alternatively, the registration request carries the identifier of the terminal supporting the WiFi capability.
  • the WLAN discovery and selection device acquires access parameter information.
  • the WLAN discovery and selection device sends a notification message carrying the access parameter information to the terminal, so that the terminal selects the WLAN corresponding to the target AP according to the access parameter information.
  • the WLAN discovery and selection method of the present embodiment is different from the foregoing embodiment shown in FIG. 1 only in the following:
  • the present embodiment describes the technical solution of the present invention on the WLAN discovery and selection device side;
  • the technical solution of the present invention is described on the terminal side. For details, refer to the description of the embodiment shown in FIG. 1 , and details are not described herein again.
  • the WLAN discovery and selection device may also notify the terminal.
  • the WLAN discovery and selection device receives the registration request sent by the terminal; when the WLAN is used to offload the packet exchange data in the cellular network, the WLAN discovery and selection device acquires the connection. Entering the parameter information; sending a notification message carrying the access parameter information to the terminal, so that the terminal selects the target AP according to the access parameter information.
  • the WLAN discovery and selection method of the embodiment when the terminal initiates packet switching data to the cellular network, the WLAN discovery and selection operations are performed, thereby effectively improving the efficiency of WiFi discovery and selection.
  • the following optional technical solutions may be further included to form an optional embodiment of the embodiment shown in FIG. 2.
  • the method may further include the following steps: the WLAN discovery and selection device determines whether the WLAN is required to adopt the WLAN in the cellular network. Packet switched data is offloaded;
  • the discovery and selection device of the WLAN determines whether the WLAN is used to offload the packet-switched data in the cellular network", and specifically determines whether the WLAN is used to offload the packet-switched data in the cellular network according to the service type.
  • the method may include the following steps:
  • the WLAN discovery and selection device obtains packet switched data services from a cellular network element (such as a Base Station Controller (BSC) or a Radio Network Controller (RNC)) or a core network element.
  • a cellular network element such as a Base Station Controller (BSC) or a Radio Network Controller (RNC)
  • BSC Base Station Controller
  • RNC Radio Network Controller
  • the WLAN discovery and selection device determines whether the WLAN is used to offload packet switched data in the cellular network according to the service type.
  • the WLAN discovery and selection device determines that the WLAN is used to perform the packet exchange data in the cellular network.
  • the WLAN discovery and selection device determines that the service type is Voice over Internet Protocol (VoIP) voice type
  • VoIP Voice over Internet Protocol
  • the WLAN discovery and selection device determines that the WLAN does not need to use the WLAN to exchange data with the packet in the cellular network.
  • the WLAN discovery and selection device determines that the service type is a MMS service type
  • the WLAN discovery and selection device determines that the WLAN is used to offload the packet switched data in the cellular network; when the WLAN discovers and selects the device When it is determined that the service type is the video service type, the WLAN discovery and selection device determines that the WLAN is used to offload the packet exchange data in the cellular network; when the WLAN discovery and selection device determines that the service type is the instant communication service type
  • WLAN discovery and selection A WLAN device determines the need to use a cellular packet switched data network to offload;
  • the WLAN discovery and selection device can further acquire the load of the cellular network, for example, acquiring a cell from a BSC or other network element.
  • the load of the network and determine whether the load of the cellular network is greater than or equal to a preset load threshold.
  • a service type in which the WLAN is used to offload the packet-switched data in the cellular network is determined.
  • the above technical solution introduces the technical solution of the present invention by taking the above-mentioned several service types and the case where the WLAN is used to offload packet-switched data in the cellular network according to the above-mentioned several service types.
  • other service types may be used to determine whether the WLAN is used to offload packet switched data in the cellular network, and details are not described herein.
  • the discovery and selection device of the WLAN determines whether the WLAN is used to offload the packet-switched data in the cellular network", which may be corresponding to the terminal.
  • the priority of the user is determined whether the WLAN is used to offload the packet-switched data in the cellular network.
  • the method may include the following steps:
  • the WLAN discovery and selection device obtains the priority of the user corresponding to the terminal from the Home Location Register (HLR); the user corresponding to the terminal refers to the customer identification module (Subscriber Identity) installed in the terminal. Module; SIM) corresponding user.
  • HLR Home Location Register
  • SIM Subscriber Identity
  • the subscription information of the user corresponding to the terminal is stored, and the subscription information stores the priority of the user corresponding to the terminal.
  • the priority of the global communication is the highest.
  • the network sets the corresponding priority for it. The higher the priority, the more it is guaranteed to be the service of the cellular network, and the data of the corresponding service is not offloaded to the WLAN.
  • the priority is prioritized. Low users are offloaded to the WLAN. Therefore, in the cellular network, priority is given to ensuring that the global access users are in the cellular network.
  • the step (C) is performed when the priority of the user corresponding to the terminal is greater than or equal to the preset priority threshold; otherwise, when the user priority corresponding to the terminal is less than the preset priority threshold, the step (D) is performed. );
  • the WLAN discovery and selection device may first acquire the load of the cellular network, and determine whether the load of the cellular network is greater than or equal to a preset load threshold. When the load of the cellular network is greater than or equal to the preset load threshold, step (D) is performed; otherwise, when the load of the cellular network is less than the preset load threshold, (C) is performed;
  • the WLAN discovery and selection device determines that the WLAN is not required to offload the packet switched data in the cellular network;
  • the WLAN discovery and selection device determines that the WLAN is used to offload the packet switched data in the cellular network and ends.
  • the WLAN discovery and selection device obtains the access parameter in step 201
  • the information may include: the WLAN discovery and selection device acquires the offload policy message; the offload policy message is used to indicate that the AP with the best signal strength is selected, or the AP of the preset frequency band is selected.
  • the WLAN discovery and selection device sends a notification message carrying the access parameter information to the terminal, which may include: the WLAN discovery and selection device sends a notification message carrying the offload policy message to the terminal for the terminal to scan.
  • the WLAN obtains a first AP list, where the first AP list includes at least one AP identifier, and a signal strength of each AP or a frequency band of each AP; and selects a target AP from the first AP list according to the offload policy message.
  • the WLAN discovery and selection device obtains the access parameter in step 201
  • the information may include: the WLAN discovery and selection device acquires the offload policy message and the SSID of the AP of the WLAN for the terminal access, and the signal strength of each AP or the frequency band of each AP; the offload policy message is used to indicate the selection The AP with the best signal strength, or the AP with the preset frequency band.
  • the WLAN discovery and selection device sends a notification message carrying the access parameter information to the terminal, which may include: the WLAN discovery and selection device sends the AP carrying the offloading policy message and the accessible WLAN to the terminal.
  • the notification message of the SSID for the terminal to scan the WLAN, to obtain a first AP list, where the first AP list includes at least one AP identifier and an SSID corresponding to each AP, and a signal strength of each AP or a frequency band of each AP.
  • the WLAN discovery and selection device receiving the registration request sent by the terminal further carries the location information of the terminal.
  • the location information of the terminal is the cell ID of the terminal or the latitude and longitude information of the terminal, or may be other location information capable of identifying the terminal.
  • the access parameter information may specifically include the offload policy information and the second AP list.
  • the "WLAN discovery and selection device acquires access parameter information" may specifically To include the following steps:
  • the WLAN discovery and selection device acquires all AP identifiers corresponding to the location information of the terminal;
  • the discovery and selection device of the WLAN may obtain AP information from all pre-stored ACs. Attribute information corresponding to each AP is obtained. Specifically, the WLAN discovery and selection device may acquire, in advance, at least one of the AP's attribute information (including the AP's signal-to-noise ratio, load, and throughput) from all ACs. It may also include the frequency band to which the AP belongs, or the like, or all the ACs periodically report the attribute information of the APs in all ACs to the WLAN discovery and selection device.
  • the AP's attribute information including the AP's signal-to-noise ratio, load, and throughput
  • the WLAN discovery and selection device can also obtain the attribute information of each AP in all the AP identifiers corresponding to the location information of the terminal, according to the interaction between the APs corresponding to the location information of the terminal and the AC corresponding to each AP identifier.
  • the WLAN discovery and selection device pre-stores the correspondence between the AP and the AC, and the correspondence between the location information of the terminal and the AP, as shown in Table 1 above.
  • the WLAN discovery and selection device identifies the availability of each AP and obtains the second AP list according to the attribute information corresponding to each AP in all the AP identifiers corresponding to the location information of the terminal, and the second AP list includes at least one The AP identifier accessed by the terminal and the attribute information of each AP that can be accessed by the terminal;
  • the attribute information of the AP includes at least one of a signal to noise ratio of the AP, a load of the AP, and a throughput of the AP.
  • the attribute information of the AP may further include a frequency band of the AP, for example, the AP belongs to the 2.4G band or the 5G band.
  • the AP's attribute information must include the AP's load.
  • the attribute information threshold of the AP availability is stored, for example, the signal to noise ratio threshold of the AP, the load threshold of the AP, and the throughput threshold of the AP are stored, when the signal to noise ratio of the AP is greater than the signal to noise ratio threshold.
  • the load of the AP is greater than the threshold or the throughput of the AP is greater than the throughput.
  • the AP is determined to be unavailable when the ping threshold is exceeded. Otherwise, the AP is available when the SNR of the AP is less than or equal to the SNR threshold, the load of the AP is less than or equal to the threshold, or the throughput of the AP is less than or equal to the throughput threshold.
  • the WLAN discovery and selection device obtains the preset offload policy information; the offload policy message is used to indicate the AP with the best signal strength, the AP with the smallest load selection, or the AP with the preset frequency segment.
  • the step 202 the discovery and selection device of the WLAN sends a notification message carrying the access parameter information to the terminal
  • the WLAN discovery and selection device sends a notification message carrying the offload policy information and the second AP list to the terminal.
  • the terminal For the terminal to scan the WLAN, obtain the first AP list, where the first AP list includes at least one AP identifier; and select the target AP from the intersection of the first AP list and the second AP list according to the offload policy message.
  • the WLAN discovery and the registration request sent by the selection device receiving terminal further includes a first AP list, where the first AP list is obtained by the terminal scanning the WLAN.
  • the first AP list includes at least one AP identifier.
  • the access parameter information may still include the offload policy information and the second AP list.
  • the step of "the discovery and selection device of the WLAN acquires the access parameter information" in step 201 may specifically include the following steps:
  • the WLAN discovery and selection device obtains the attribute information corresponding to each AP identifier. Similarly, the WLAN discovery and selection device can obtain each AP in the first AP list from the AP information in all the ACs that are pre-stored. Corresponding attribute information; specifically, the WLAN discovery and selection device may acquire attribute information of the APs in all ACs from all ACs in advance (the attribute information may include at least one of a signal to noise ratio, a load, and a throughput of the AP, The attribute information of the APs in all the ACs may be reported to the WLAN discovery and selection device by all the ACs.
  • the WLAN discovery and selection device can also interact with the AC corresponding to each AP identifier in the first AP list to obtain attribute information of each AP.
  • the WLAN discovery and selection device pre-stores the correspondence between the AP and the AC, and the WLAN discovery and selection device can be based on the AP and the AC. Corresponding relationship, the AC corresponding to each AP is obtained, thereby interacting with the AC to obtain attribute information of each AP.
  • the WLAN discovery and selection device identifies the availability of each AP according to the attribute information corresponding to each AP identifier in the first AP list, and selects a second AP list from the first AP list, where the second AP list includes at least one An AP identifier that can be accessed by the terminal and attribute information of each AP that can be accessed by the terminal;
  • the WLAN discovery and selection device acquires preset offload policy information.
  • the offload policy message is used to indicate the AP with the best signal strength, the AP with the smallest load, or the AP with the preset frequency band.
  • the step 202 "the discovery and selection device of the WLAN sends a notification message carrying the access parameter information to the terminal", which may include: the WLAN discovery and selection device sends a notification message carrying the offload policy information and the second AP list to the terminal. And the terminal selects the target AP from the second AP list according to the offload policy message.
  • step (23) may be specifically replaced by the following step (33).
  • the WLAN discovery and selection device obtains the identifier of the target AP obtained from the second AP list according to the preset traffic policy information; the traffic split policy message is used to indicate that the AP with the least load is selected, or the AP of the preset frequency band is selected;
  • the WLAN discovery and selection device sends a notification message carrying the access parameter information to the terminal, which may include: the WLAN discovery and selection device sends a notification message carrying the identifier of the target AP to the terminal.
  • the WLAN discovery and selection device may also receive the failure result reported by the terminal, and is used to perform handover success rate statistics and update whether the WLAN is used to offload the packet switched data in the cellular network. Algorithms and other operations.
  • the first AP list obtained by the WLAN scanned by the terminal may identify the signal strength of each AP, the frequency band of each AP, and each AP. SSID and more.
  • the attribute information of the AP that is obtained by the WLAN discovery and the selection device may include at least one of a signal to noise ratio, a load, and a throughput of the AP, and may also include a frequency band to which the AP belongs.
  • the WLAN discovery and selection operations are performed, thereby effectively improving the efficiency of WiFi discovery and selection.
  • FIG. 3 is a signaling diagram of a WLAN discovery and selection method according to an embodiment of the present invention. As shown in FIG. 3, the WLAN discovery and selection method in this embodiment may specifically include the following steps:
  • the terminal When the terminal initiates packet switching data to a cellular network (such as a BSC), the terminal turns on the WiFi function;
  • a cellular network such as a BSC
  • the terminal sends a registration request to the WLAN discovery and selection device.
  • the registration request may carry an identifier indicating that the terminal is capable of WiFi.
  • the WLAN discovery and selection device After the WLAN discovery and selection device receives the registration request sent by the terminal, it is determined whether the WLAN is used to offload the packet exchange data in the cellular network.
  • the packet exchange data in the cellular network needs to be offloaded by using the WLAN according to the service type or the priority of the user corresponding to the terminal.
  • the technical solution of the present invention is introduced by using a WLAN to offload the packet-switched data in the cellular network.
  • the WLAN is discovered.
  • the selection device can also inform the terminal of the result that the WLAN is not required to offload the packet switched data in the cellular network.
  • the WLAN discovery and selection device acquires a preset offload policy message and an SSID of the AP of the WLAN that can be accessed by the terminal;
  • the WLAN discovery and selection device sends a notification message to the terminal that carries the offloading policy message and the SSID of the AP of the WLAN that can be accessed by the terminal.
  • the terminal receives the notification message of the WLAN discovery and selection device carrying the offloading policy message and the SSID of the AP of the WLAN that can be accessed by the terminal, and obtains the offloading policy message and the SSID of the AP of the WLAN that can be accessed by the terminal; 306.
  • the terminal scans the WLAN, and obtains a first AP list, where the first AP list includes at least one AP identifier and an SSID of the AP of the WLAN corresponding to each AP.
  • the terminal selects, according to the offloading policy message and the SSID of the AP of the WLAN that can access, the WLAN corresponding to the target AP from the first AP list.
  • the offloading policy message in this embodiment may include selecting an AP with the best signal strength or selecting an AP of a preset frequency band, for example, selecting an AP with a frequency band of 2.4G or an AP with a frequency band of 5G.
  • step 300 there may be no order limitation between step 300 and any one of steps 301-305 in this embodiment.
  • the WLAN discovery and selection operation can be performed when the terminal initiates packet switching data to the cellular network, thereby effectively improving the efficiency of WiFi discovery and selection. .
  • FIG. 4 is a signaling diagram of a WLAN discovery and selection method according to another embodiment of the present invention. As shown in FIG. 4, the WLAN discovery and selection method in this embodiment may specifically include the following steps:
  • the terminal When the terminal initiates packet switching data to a cellular network (such as a BSC), the terminal turns on the WiFi function.
  • a cellular network such as a BSC
  • the terminal sends, to the WLAN discovery and selection device, a registration request that carries the cell ID where the terminal is located.
  • the location information of the terminal is taken as the cell ID where the terminal is located as an example to introduce the technology of the present invention.
  • the WLAN discovery and selection device After the WLAN discovery and selection device receives the registration request sent by the terminal, it is determined whether the WLAN is used to offload the packet exchange data in the cellular network.
  • the WLAN discovery and selection device acquires the location of the terminal according to the correspondence between the pre-stored cell ID and the AP, and the correspondence between the AP and the AC.
  • the AP corresponding to the cell ID and the corresponding AC.
  • FIG. 4 shows an AC as an example.
  • the specific interaction process may be that the WLAN discovery and selection device sends a request to each AC to request to obtain the attribute information of the corresponding AP, and the AC returns the attribute information of the corresponding AP to the WLAN discovery and selection device.
  • the WLAN discovery and selection device interacts with the AC.
  • the attribute information of all APs corresponding to the cell ID where the terminal is located is obtained.
  • all the ACs can also periodically report the attribute information of all APs to the WLAN discovery and selection device, or the WLAN discovery and selection device is obtained from the AC in advance. In this way, the WLAN discovery and selection device can also obtain attribute information of all APs corresponding to the cell ID where the terminal is located, from the attribute information of the APs of all the ACs that are pre-stored.
  • the attribute information of each AP includes the signal to noise ratio of the AP, the load of the AP, and the throughput of the AP, or may also include the frequency band of the AP, for example, whether the AP belongs to the 2.4G band or the 5G band.
  • the WLAN discovery and selection device identifies, according to the attribute information of all the APs corresponding to the cell ID of the terminal, the availability of each AP, and obtains the second AP list with availability from all APs corresponding to the cell ID where the terminal is located. ;
  • the second AP list includes at least one AP identifier that is available for terminal access and attribute information of each AP;
  • the WLAN discovery and selection device acquires a preset offload policy message.
  • the offloading policy message may be an AP that selects the best signal strength, an AP that selects the least load, or an AP that selects a preset frequency band, for example, an AP with a frequency band of 2.4G or an AP with a frequency of 5G.
  • the WLAN discovery and selection device sends a notification message carrying the traffic offload policy message and the second AP list to the terminal.
  • the terminal receives the WLAN discovery and selection device, and sends a traffic distribution policy message and a second AP list notification message to obtain a traffic distribution policy message and a second AP list.
  • the terminal scans the WLAN, and obtains a first AP list, where the first AP list includes at least one AP identifier.
  • the AP attribute information in step 404 may be included in the AP attribute information. If the AP attribute information does not include the frequency band to which the AP belongs, In 409, when the terminal scans the WLAN, it can also scan and acquire the frequency band to which the AP belongs.
  • the terminal selects, according to the offload policy message, the WLAN corresponding to the target AP from the intersection of the first AP list and the second AP list.
  • step 400 in this embodiment needs to be between any one of steps 401-408. In no order.
  • the terminal when the terminal sends a registration request to the WLAN discovery and selection device, the terminal may send the location information along with the registration request to the WLAN discovery and selection device. It should be understood here that the location information here is a broad concept, as long as the WLAN discovery and selection device can identify the location of the terminal. In one implementation manner, when the terminal discovers and selects the device to the WLAN, the terminal sends the cell ID number of the cell to the WLAN discovery and selection device.
  • the cell ID of the cell (if CELL1) in which the terminal is located is sent to the WLAN discovery and selection device, and the WLAN discovery and selection device is The corresponding relationship between the CELL ID and the AP (such as Table 1 in the optional embodiment of the embodiment shown in FIG. 1 above) is queried, and all the APs belonging to the cellular network ID CELL1 are found, for example, AP1 and AP2. There are 5 APs in AP4, AP5, and AP7. The 5 APs are in the second AP list. When the 5 APs belong to different ACs, the WLAN discovery and selection device will be according to the embodiment shown in Figure 1 above.
  • Table 1 in the optional embodiment, obtains the AC to which the five APs belong, and then queries the AC corresponding to the five APs to query the specific attribute information (signal-to-noise ratio, load, and throughput) of the five APs. And other information such as the frequency band to which it belongs, and the attribute information of the five APs that are queried are sent to the terminal in the second AP list, so that the terminal selects a target AP from the second AP list. Access.
  • the APs may be identified for availability, and the APs that are available for identification are retained in the second AP list, and the APs that are not available are deleted from the second AP list.
  • the terminal When the terminal sends a registration request to the WLAN discovery and selection device, the terminal simultaneously transmits the cell ID number of the cell to which it belongs, so that the AP only belongs to the AP around the cellular network (so, at this time, the cell ID of the cell is sent by the terminal.
  • the terminal is sent to the terminal in the vicinity of the cellular network, and the terminal can select one of the five AP lists (the second AP list) to access.
  • the WLAN discovery and selection operation can be performed when the terminal initiates packet switching data to the cellular network, thereby effectively improving the efficiency of WiFi discovery and selection. .
  • FIG. 5 is a signaling diagram of a WLAN discovery and selection method according to another embodiment of the present invention. As shown in FIG. 5, the WLAN discovery and selection method in this embodiment may specifically include the following steps:
  • the terminal When the terminal initiates packet switching data to a cellular network (such as a BSC), the terminal starts the WiFi function. 501.
  • the terminal scans the WLAN, and obtains a first AP list, where the first AP list includes at least one AP identifier.
  • the terminal sends a registration request that carries the first AP list to the WLAN discovery and selection device.
  • the WLAN discovery and selection device After the WLAN discovery and selection device receives the registration request sent by the terminal, determine whether the WLAN is used to offload the packet exchange data in the cellular network.
  • the WLAN discovery and selection device interacts with the AC corresponding to each AP in the first AP list according to the first AP list, and obtains the first AP list. Attribute information of each AP;
  • the specific interaction process may be that the WLAN discovery and selection device sends a request to each AC to obtain the attribute information of the corresponding AP, and the AC returns the attribute information of the corresponding AP to the WLAN discovery and selection device.
  • the WLAN discovery and selection device interacts with the AC to obtain attribute information of each AP in the first AP list.
  • all ACs can periodically report the attribute information of all APs to the WLAN discovery and selection device, or the WLAN discovery and selection device is obtained from the AC in advance, so that the WLAN discovery and selection device can also be pre-stored from all ACs.
  • the attribute information of the AP is obtained from the attribute information of each AP in the first AP list.
  • the attribute information of each AP includes the signal to noise ratio of the AP, the load of the AP, and the throughput of the AP, or may also include the frequency band of the AP, for example, whether the AP belongs to the 2.4G band or the 5G band.
  • the WLAN discovery and selection device identifies, according to the attribute information of all the APs in the first AP list, the availability of each AP, and obtains the second AP list with availability from the first AP list.
  • the second AP list includes at least one AP identifier that is available for terminal access and attribute information of each AP;
  • the WLAN discovery and selection device acquires a preset offload policy message.
  • the offloading policy message may be an AP that selects the best signal strength, an AP that selects the least load, or an AP that selects a preset frequency band.
  • the WLAN discovery and selection device sends a notification message carrying the traffic offload policy message and the second AP list to the terminal. 508.
  • the terminal receives the WLAN discovery and the notification message that is sent by the device and carries the traffic distribution policy message and the second AP list, and obtains the traffic distribution policy message and the second AP list.
  • the AP attribute information in the step 504 may be included in the AP attribute information. If the AP attribute information does not include the frequency band to which the AP belongs, the step may be performed. In 501, when the terminal scans the WLAN, the terminal may also scan for the frequency band to which the AP belongs.
  • the terminal selects, according to the offload policy message, the WLAN corresponding to the target AP from the second AP list.
  • the terminal may also scan the surrounding WLANs to obtain the APs that can be detected by the UEs.
  • the APs form the first AP list, and then the first AP list is carried in the registration request and sent to the WLAN.
  • Discover and select devices It should be noted that: the terminal scans the surrounding wireless network and obtains the first AP list, for example, the common AP in the first AP list scans to 10 APs, but the 10 APs may belong to different ACs, for example, belong to AC1-AC3. .
  • the WLAN discovery and selection operation can be performed when the terminal initiates packet switching data to the cellular network, thereby effectively improving the efficiency of WiFi discovery and selection. .
  • FIG. 6 is a signaling diagram of a WLAN discovery and selection method according to still another embodiment of the present invention. As shown in FIG. 6, the WLAN discovery and selection method in this embodiment may specifically include the following steps:
  • 600-606 is the same as 500-506 of the embodiment shown in FIG. 5 above.
  • 500-506 of the embodiment shown in FIG. 5 above.
  • details refer to the description of the embodiment shown in FIG. 5, and details are not described herein again.
  • the WLAN discovery and selection device selects a target AP from the second AP list according to the preset offload policy message.
  • the WLAN discovery and selection device sends a notification message carrying the target AP identifier to the terminal. 609.
  • the terminal receives the WLAN discovery and the notification message that the device sends the target AP identifier, obtains the target AP, and selects the WLAN corresponding to the target AP.
  • the traffic offloading policy message may be used to indicate the AP with the smallest load or the AP of the preset frequency band.
  • the traffic splitting policy message in the technical solution of this embodiment may also be used to indicate the most selected signal strength.
  • a good AP because the scanning of the signal strength is scanned by the terminal, the signal strength of each AP can be carried in the first list obtained by the terminal scanning the WLAN, or the terminal
  • each AP may be arranged according to the signal strength, so that when the second AP list with availability is obtained from the first AP list, the APs are still arranged in the order of signal strength, and can still be implemented.
  • the offload policy message is the implementation of the AP with the best signal strength.
  • the implementation of the embodiment shown in FIG. 5 is the same as the implementation of the embodiment shown in FIG. 5, and the implementation is the same as the implementation of the embodiment shown in FIG. The description of the illustrated embodiment will not be repeated here.
  • the WLAN discovery and selection operation can be performed when the terminal initiates packet switching data to the cellular network, thereby effectively improving the efficiency of WiFi discovery and selection. .
  • FIG. 7 is a schematic structural diagram of a terminal according to an embodiment of the present invention. As shown in FIG. 7, the terminal in this embodiment may specifically include a sending module 10, a receiving module 11, and a selecting module 12.
  • the sending module 10 is configured to send a registration request to the WLAN discovery and selection device when the packet exchange data is initiated to the cellular network
  • the receiving module 11 is configured to receive the notification message sent by the WLAN discovery and selection device, where the notification message carries the access parameter.
  • the selection module 12 is connected to the receiving module 11, and the selection module 12 is configured to select the WLAN corresponding to the target AP according to the access parameter information received by the receiving module 11.
  • the implementation of the WLAN in the embodiment of the present invention is the same as the implementation of the foregoing method in the related embodiments.
  • the terminal of the embodiment when the packet exchange data is initiated to the cellular network, sends a registration request to the WLAN discovery and selection device, and receives the notification message sent by the WLAN discovery and selection device, where the notification message carries the access parameter information. ; Select the target wireless access point based on the access parameter information.
  • the terminal when the terminal initiates packet switching data to the cellular network, the WLAN discovery and selection operations are performed, thereby effectively improving the efficiency of WiFi discovery and selection.
  • FIG. 8 is a schematic structural diagram of a terminal according to another embodiment of the present invention. As shown in FIG. 8, the terminal of this embodiment may further include the following technical solutions on the basis of the foregoing embodiment shown in FIG. 7.
  • the terminal in this embodiment further includes an opening module 13 and an obtaining module 14.
  • the receiving module 11 is specifically configured to receive a notification message that carries a traffic offloading policy message sent by the WLAN discovery and selection device.
  • the trafficking policy message is used to indicate that the AP with the best signal strength is selected, or Select the AP of the preset frequency band.
  • the opening module 13 is configured to enable the WiFi function before the selection module 12 selects the WLAN corresponding to the target AP according to the access parameter information.
  • the obtaining module 14 is connected to the opening module 13 for scanning the WLAN after the opening module 13 turns on the WiFi, and acquiring the first AP list, where the first AP list includes at least one AP identifier, and the signal strength of each AP or each The frequency band of an AP.
  • the selection module 12 is further connected to the acquisition module 14.
  • the selection module 12 is specifically configured to select the WLAN corresponding to the target AP from the first AP list obtained by the obtaining module 14 according to the traffic distribution policy message received by the receiving module 11.
  • the receiving module 11 in the terminal in the embodiment is specifically configured to receive a notification message that carries the offloading policy message sent by the WLAN discovery and selection device and the SSID of the AP that can access the WLAN;
  • the opening module 13 is configured to select the target AP according to the access parameter information after the receiving module 11 receives the notification message sent by the WLAN discovery and selection device.
  • the obtaining module 14 is configured to scan the WLAN after the WiFi module is turned on, and obtain a first AP list, where the first AP list includes at least one AP identifier, and a signal strength of each AP or a frequency band of each AP.
  • the selecting module 12 is specifically configured to select, according to the offloading policy message received by the receiving module 11 and the SSID of the AP of the WLAN, and the first AP list obtained by the obtaining module 14, select the WLAN corresponding to the target AP from the first AP list.
  • the sending module 10 in the terminal of the embodiment is specifically configured to send a registration request that carries the location information of the terminal to the WLAN discovery and selection device.
  • the receiving module 11 is specifically configured to receive the WLAN discovery and the carrying device to send the carrier.
  • a traffic policy message and a notification message of the second AP list is obtained by the WLAN discovery and selection device, after receiving the registration request, acquiring attribute information of each AP in all AP identifiers corresponding to the location information of the terminal, and Determining the availability of each AP according to the attribute information of each of the APs corresponding to the location information of the terminal;
  • the second AP list includes at least one AP identifier that can be accessed by the terminal and can be provided by the terminal.
  • Attribute information of each AP that is accessed; the attribute information includes at least one of a signal to noise ratio, a load, and a throughput, and the offloading policy message is used to indicate that the selected signal strength is the best.
  • AP select the AP with the lowest load, or select the preset frequency band
  • the corresponding initiating module 13 is configured to: after the receiving module 11 receives the notification message sent by the WLAN discovery and selection device, the selecting module 12 selects the target AP corresponding to the access parameter information. Before the WLAN, the WiFi function is enabled; the obtaining module 14 is configured to scan the WLAN, and obtain the first AP list, where the first AP list includes at least one AP identifier.
  • the selecting module 12 is specifically configured to obtain the following according to the traffic policy message received by the receiving module 11 The intersection of the first AP list obtained by the module 14 and the second AP list received by the receiving module 11 selects the WLAN corresponding to the target AP.
  • the initiating module 13 in the terminal of the embodiment is configured to enable the WiFi function before the sending module 10 sends a registration request to the WLAN discovery and selection device.
  • the acquiring module 14 is configured to scan the WLAN to obtain the first AP list.
  • the first AP list includes a signal strength of each of the at least one AP identifier and the at least one AP identifier.
  • the sending module 10 is specifically configured to send a registration request that carries the first AP list to the WLAN discovery and selection device.
  • the receiving module 11 is specifically configured to receive a notification message that carries the offloading policy message and the second AP list sent by the WLAN discovery and selection device.
  • the second AP list is selected by the WLAN discovery and selection device from the first AP list.
  • the second AP list includes at least one AP identifier that can be accessed by the terminal and attribute information of each AP that can be accessed by the terminal; the attribute information includes at least one of a signal to noise ratio, a load, and a throughput, and the offloading
  • the policy message is used to indicate the AP with the best signal strength, the AP with the smallest load, or the AP with the preset frequency band.
  • the selection module 12 is specifically configured to select the WLAN corresponding to the target AP from the second AP list according to the traffic policy message.
  • the receiving module 11 is configured to receive the notification message that carries the identifier of the target AP that is sent by the WLAN discovery and selection device.
  • the identifier of the target AP is that the WLAN discovery and selection device interacts with the AC according to the first AP list. Selecting a second AP list from an AP list; and obtaining the second AP list according to the traffic policy message; the second AP list includes at least one AP identifier that can be accessed by the terminal and each AP that can be accessed by the terminal.
  • the attribute information includes at least one of a signal to noise ratio, a load, and a throughput, and the offloading policy message is used to indicate that the AP with the least load is selected, or the AP of the preset frequency band is selected.
  • the selection module 12 is specifically configured to obtain an AP corresponding to the identifier of the target AP in the notification message as the target AP.
  • the terminal of this embodiment further includes a shutdown module 15 on the basis of the foregoing technical solution.
  • the shutdown module 15 can be connected to the selection module 12 (not shown in FIG. 8), and the shutdown module 15 is configured to select the WLAN corresponding to the target AP according to the access parameter information, when the first preset is If the target AP is not detected in the time period, it is determined that the splitting fails, and the WiFi function is turned off; or the shutdown module 15 is configured to select, after the selecting module 12 selects the target AP according to the access parameter information, When the data traffic of the packet switched data is not detected within the second preset time period, the WiFi function is turned off.
  • the terminal of the embodiment further includes a shutdown module 15, a detection module 16, and a determination module 17 on the basis of the foregoing technical solutions.
  • the detecting module 16 is configured to detect the speed in the WLAN when the selecting module 12 selects the WLAN corresponding to the target AP according to the access parameter information, and when the WLAN can be accessed by the target AP, the determining module 17 is connected to the detecting module 16, and the determining module is 17 is used to determine whether the speed detected by the detecting module 16 is less than a preset speed threshold; the closing module 15 is connected to the determining module 17, and the closing module 15 is configured to determine when the determining module 17 determines that the detecting speed of the detecting module 16 is less than a preset speed threshold.
  • the WLAN is not easy to use, and the WiFi function is turned off.
  • the implementation of the WLAN in the embodiment of the present invention is the same as the implementation of the foregoing method in the related embodiments.
  • the terminal in this embodiment adopts the foregoing technical solution, and when the terminal initiates packet switching data to the cellular network, the foregoing WLAN discovery and selection operations are performed, thereby effectively improving the efficiency of WiFi discovery and selection.
  • FIG. 9 is a schematic structural diagram of a WLAN discovery and selection device according to an embodiment of the present invention.
  • the WLAN discovery and selection device of this embodiment may specifically include: a receiving module 20, an obtaining module 21, and a sending module 22.
  • the receiving module 20 is configured to receive a registration request sent by the terminal, where the registration request is initiated when the terminal initiates packet switching data to the cellular network.
  • the acquiring module 21 is configured to: after the receiving module 20 receives the registration request, when the WLAN is required to be used by the receiving module When the packet exchange data is offloaded, the access parameter information is obtained; the sending module 22 is connected to the obtaining module 21, and the sending module 22 is configured to send, to the terminal, a notification message carrying the access parameter information acquired by the obtaining module 21, for the terminal.
  • the WLAN corresponding to the target AP is selected according to the access parameter information.
  • the WLAN discovery and selection device in this embodiment implements the description of the WLAN related method embodiment by using the foregoing module, and details are not described herein again.
  • the WLAN discovery and selection device of the embodiment receives the registration request sent by the terminal by using the foregoing module; determines whether the packet exchange data in the cellular network needs to be offloaded by using the WLAN; and needs to adopt the WLAN to perform the packet switching in the cellular network.
  • the WLAN discovery and selection device acquires the access parameter information; and sends a notification message carrying the access parameter information to the terminal, so that the terminal selects the WLAN corresponding to the target AP according to the access parameter information.
  • the WLAN discovery and selection method of the embodiment when the terminal initiates packet switching data to the cellular network, the WLAN discovery and selection operations are performed, thereby effectively improving the efficiency of WiFi discovery and selection.
  • the WLAN discovery and selection device of the embodiment shown in FIG. 9 further includes a judging module 23.
  • the judging module 23 is connected to the receiving module 20, and the judging module 23 is configured to determine whether the WLAN needs to be adopted after the receiving module 20 receives the registration request.
  • the packet exchange data in the packet-switched data service initiated by the terminal in the cellular network is offloaded; the obtaining module 21 is connected to the determining module 23, and the obtaining module 21 is configured to use the WLAN to the cellular according to the judgment result of the determining module 23.
  • the access parameter information is obtained.
  • the determining module 23 is specifically configured to obtain the service type of the packet-switched data from the cellular network element or the core network element; and determine whether it is needed according to the service type.
  • the packet switched data in the cellular network is offloaded using a WLAN.
  • the WLAN discovery and selection device determines that the WLAN is used to offload the packet-switched data in the cellular network; when the WLAN discovers and selects the device When it is determined that the service type is the voice type of the VoIP, the discovery and selection device of the WLAN determines that the WLAN does not need to use the WLAN to offload the packet exchange data in the cellular network; when the WLAN discovery and selection device determines that the service type is the multimedia message service The WLAN discovery and selection device determines that the WLAN is used to offload the packet switched data in the cellular network; when the WLAN discovery and selection device determines that the service type is a video service type, the WLAN discovery and selection device determines The WLAN is required to perform the offloading of the packet switched data in the cellular network. When the WLAN discovery and selection device determines that the service type is the instant communication service type, the WLAN discovery and selection device determines that the WLAN is required to use the WLAN in the cellular network. Packet switched data is off
  • the determining module 23 in the WLAN discovery and selection device may also Obtain the load of the cellular network, for example, obtain the load of the cellular network from the BSC or other network elements; and determine whether the load of the cellular network is greater than or equal to a preset load threshold. When the load of the cellular network is greater than or equal to the preset load threshold, it is determined that the load needs to be adopted.
  • the service type in which the WLAN diverts the packet-switched data in the cellular network is not required.
  • the determining module 23 in the WLAN discovery and selection device of the embodiment shown in FIG. 9 is specifically configured to acquire the priority of the user corresponding to the terminal from the home location register; and determine whether the priority of the user corresponding to the terminal is greater than If the priority of the user corresponding to the terminal is greater than or equal to the preset priority threshold, it is determined that the WLAN is not used to offload the packet exchange data in the packet switched data in the cellular network; otherwise, the terminal corresponds to When the user priority is less than the preset priority threshold, it is determined that the WLAN is required to offload the packet switched data in the cellular network.
  • the obtaining module 21 in the WLAN discovery and selection device of the embodiment shown in FIG. 9 is specifically configured to acquire a traffic off policy message; the traffic split policy message is used to indicate that the selected signal strength is the best.
  • the AP or the AP that selects the preset frequency band; the sending module 22 is specifically configured to send, to the terminal, a notification message that carries the traffic offloading policy message obtained by the acquiring module 21, so that the terminal can enable the WiFi function, and scan the WLAN to obtain the first AP list.
  • the first AP list includes at least one AP identifier, and a signal strength of each AP or a frequency band of each AP, and selects a WLAN corresponding to the target AP from the first AP list according to the traffic off policy message.
  • the acquiring module 21 in the WLAN discovery and selection device of the embodiment shown in FIG. 9 is specifically configured to acquire the offloading policy message and the SSID of the AP of the WLAN for accessing the terminal;
  • the offloading policy message is used to indicate that the AP with the best signal strength is selected, or the AP of the preset frequency band is selected.
  • the sending module 22 is specifically configured to send, to the terminal, the offloading policy message acquired by the acquiring module 21 and the SSID of the AP that can access the WLAN.
  • the first AP list includes at least one AP identifier and an SSID of the AP of each WLAN corresponding to each AP, and a signal strength of each AP Or the frequency band of each AP; and selecting the WLAN corresponding to the target AP from the first AP list according to the traffic policy message, the SSID of the AP of the WLAN that can be accessed, and the first AP list.
  • the receiving module 20 in the discovery and selection device is specifically configured to receive the registration request of the terminal that carries the location information that is sent by the terminal; the obtaining module 21 is further connected to the receiving module 20, and the obtaining module 21 is specifically configured to acquire the registration received by the acquiring and receiving module 20
  • the attribute information of each AP corresponding to the location information of the terminal in the request for example, the obtaining module 21 may be configured to obtain all the AP identifiers corresponding to the location information of the terminal in the registration request received by the receiving module 20; Attribute information of each AP in all corresponding AP identities.
  • the obtaining module 21 obtains the attribute information of each of the APs corresponding to the location information of the terminal, and may refer to the two methods in the foregoing method embodiment.
  • the obtaining module 21 is from all pre-stored ACs.
  • the AP attribute information (including the attribute information of all APs in each AC in the AC)
  • the attribute information of each AP in all the AP identifiers corresponding to the location information of the terminal is obtained.
  • the obtaining module 21 may Acquiring all the APs corresponding to the location information of the terminal and the AC corresponding to each AP identifier, and acquiring the attribute information of each AP in all the AP identifiers corresponding to the location information of the terminal; the attribute information includes the signal to noise ratio, the load, and the throughput.
  • At least one of the quantity identifying the availability of each AP and obtaining the second AP list according to the attribute information corresponding to each AP of all the AP identifiers corresponding to the location information of the terminal, where the second AP list includes at least one terminal for accessing
  • the AP identifier and the attribute information of each AP that can be accessed by the terminal obtain the preset traffic split policy information;
  • the information is used to indicate the AP with the best signal strength, the AP with the lowest load, or the AP with the preset frequency band.
  • the sending module 22 is specifically configured to send the traffic splitting information acquired by the acquiring module 21 and the second AP list to the terminal.
  • a notification message for the terminal to enable the WiFi function, and scanning the WLAN to obtain the first AP list, where the first AP list includes at least one AP identifier; and according to the offload policy message, from the intersection of the first AP list and the second AP list Select the WLAN corresponding to the target AP.
  • the receiving module 20 in the WLAN discovery and selection device of the embodiment shown in FIG. 9 is specifically configured to receive a registration request that is sent by the terminal and carries the first AP list.
  • the AP list is enabled by the terminal to enable the WiFi function, and is obtained by scanning the WLAN.
  • the first AP list includes at least one AP identifier.
  • the obtaining module 21 is specifically configured to obtain attribute information corresponding to each AP identifier, or may also be pre-stored. In the AP information in the AC, the attribute information of each AP in all the AP identifiers corresponding to the location information of the terminal is obtained. Similarly, the obtaining the attribute information corresponding to each AP identifier by the obtaining module 21 may also adopt the two methods of the foregoing method.
  • the obtaining module 21 further identifies, according to the attribute information corresponding to each AP identifier in the first AP list, the availability of each AP, and selects a second AP list from the first AP list, where the second AP list includes at least one terminal that can be connected.
  • the AP that selects the preset frequency band can be an AP with a selected frequency band of 2.4G or an AP with a selected frequency band of 5G.
  • the notification message that is sent by the acquiring module 21 and the second AP list is sent to the terminal, so that the terminal selects the WLAN corresponding to the target AP from the second AP list according to the trafficking policy message.
  • the receiving module 20 in the WLAN discovery and selection device of the embodiment shown in FIG. 9 is specifically configured to receive a registration request that is sent by the terminal and carries the first AP list.
  • the AP list is configured to enable the WiFi function of the terminal and obtain the at least one AP identifier by using the scanning WLAN.
  • the obtaining module 21 is specifically configured to perform AC interaction corresponding to each AP identifier in the first AP list, and obtain each of the APs.
  • the attribute information corresponding to the AP identifier; or the attribute information of each AP in the first AP list may be obtained from the AP information in all the pre-stored ACs (the two methods may refer to the description of the foregoing method embodiment); Attribute information corresponding to each AP identifier in the first AP list, identifying the availability of each AP and selecting a second AP list from the first AP list; the second AP list includes at least one AP identifier capable of being accessed by the terminal and capable of Attribute information of each AP for access by the terminal; the attribute information includes at least one of signal to noise ratio, load, and throughput
  • the identifier of the target AP that is obtained from the second AP list according to the preset traffic policy information; the traffic policy message is used to indicate that the AP with the smallest load is selected, or the AP of the preset frequency band is selected; and the sending module 22 is specifically configured to send the bearer to the terminal.
  • WLAN discovery and selection device of the foregoing embodiment is described in detail by using all the optional technical solutions described above as an example. In the actual reference, all the foregoing optional technologies may be combined in any combination. Alternative embodiments of the invention are not repeated here.
  • the WLAN discovery and selection device of the above embodiment implements WLAN by adopting the above module.
  • the description of the above related method embodiments is not described herein again.
  • the WLAN discovery and selection device of the foregoing embodiment by adopting the above technical solution, performs the discovery and selection operation of the WLAN when the terminal initiates packet switching data to the cellular network, thereby effectively improving the efficiency of WiFi discovery and selection.
  • FIG. 10 is a schematic structural diagram of a WLAN discovery and selection system according to an embodiment of the present invention.
  • the WLAN discovery and selection system of the present embodiment includes a terminal 30 and a WLAN discovery and selection device 40.
  • the terminal 30 is configured to send a registration request to the WLAN discovery and selection device 40 when initiating packet switched data to the cellular network.
  • the WLAN discovery and selection device 40 is configured to receive the registration request sent by the terminal 30, and determine whether the WLAN is used to offload the packet-switched data in the packet-switched data service initiated by the terminal in the cellular network; When the packet exchange data in the network is offloaded, the access parameter information is acquired; and the notification message carrying the access parameter information is sent to the terminal 30.
  • the terminal 30 is further configured to receive the notification message sent by the WLAN discovery and selection device 40, and select the WLAN corresponding to the target AP according to the access parameter information received by the receiving module 11.
  • the terminal 30 of the embodiment may specifically adopt the terminal of the embodiment shown in FIG. 7 or FIG. 8
  • the WLAN discovery and selection device 40 may specifically adopt the WLAN discovery and selection device of the embodiment shown in FIG. 9 .
  • the WLAN discovery and selection method of the embodiment shown in FIG. 1 to FIG. 6 described above can be used to implement WLAN discovery and selection.
  • the implementation mechanism of the WLAN discovery and selection by using the foregoing terminal and the WLAN discovery and selection device is the same as that of the foregoing related method embodiment.
  • the description of the related method embodiment. will not repeat them here.
  • the WLAN discovery and selection system of the present embodiment by adopting the above technical solution, when the terminal initiates packet switching data to the cellular network, the terminal and the WLAN discovery and selection device perform the WLAN discovery and selection operation, thereby effectively improving the WiFi. Discovery and efficiency of choice.
  • FIG. 11 is a flowchart of a WLAN discovery and selection method according to still another embodiment of the present invention.
  • the WLAN discovery and selection device of the WALN discovery and selection method in this embodiment is a WLAN discovery and selection device.
  • the WLAN discovery and selection method in this embodiment may include the following steps:
  • the WLAN discovery and selection device receives a registration request sent by the terminal.
  • the registration request is initiated when the terminal initiates packet switching data to the cellular network;
  • the registration request carries the parameter information of the terminal; for example, the parameter information of the terminal includes the location information of the terminal, such as the cell ID where the terminal is located or the terminal.
  • the parameter information may include a first AP list, where the first AP list is obtained by the terminal scanning the WLAN.
  • the WLAN discovery and selection device sends a request message to the AC according to the parameter information of the terminal in the registration request. For example, when the registration request carries the location information of the terminal, The WLAN discovery and selection device obtains all the APs corresponding to the location information of the terminal according to the mapping between the location information of the terminal and the AP, and then, according to the correspondence between the AP and the AC, and all the APs. The AC corresponding to each AP sends a request message carrying the AP identifier to request attribute information of the AP.
  • the WLAN discovery and selection device sends a request message carrying the AP identifier to the AC corresponding to each AP identifier in the first AP list according to the correspondence between the AP and the AC. Request attribute information of the AP.
  • the WLAN discovery and selection device receives attribute information of the AP returned by the AC.
  • the WLAN discovery and selection device sends a notification message carrying the access parameter information to the terminal, so that the terminal selects the WALN corresponding to the target AP according to the access parameter information.
  • the access parameter information is obtained according to the attribute information of each AP and the traffic off policy message corresponding to the parameter information of the terminal.
  • the access parameter information may include at least the following two parts: the second AP list and the offload policy message of each AP corresponding to the parameter information of the terminal.
  • the WLAN discovery and selection device may first perform the availability identification on each AP corresponding to the parameter information of the terminal, and then form the second AP list with the AP having the availability, and the access parameter information may include at least the second AP list and Traffic off policy message.
  • the terminal when the location information of the terminal is carried in the registration request, after the WLAN discovery and selection device sends the access parameter information including the second AP list and the offload policy message to the terminal, the terminal also needs to scan the WLAN to obtain the first AP list, and according to the The offload policy message selects the WLAN of the target AP from the intersection of the first AP list and the second AP list.
  • the second AP list at this time is a subset of the first AP list, and after the WALN discovery and the selecting device send the access parameter information including the second AP list and the offload policy message to the terminal, the terminal according to the offload policy message
  • the WLAN of the target AP is selected in the second AP list.
  • the WALN discovery and selection device may further select the target AP from the second AP list according to the offload policy message, and send the access parameter information including the target AP identifier to the terminal, to The terminal selects the WLAN corresponding to the target AP.
  • the WLAN discovery and selection operation can be performed when the terminal initiates packet switching data to the cellular network, thereby effectively improving the efficiency of WiFi discovery and selection. .
  • FIG. 12 is a flowchart of a WLAN discovery and selection method according to still another embodiment of the present invention.
  • the executor of the WALN discovery and selection method in this embodiment is an AC.
  • the WLAN discovery and selection method in this embodiment may include the following steps:
  • the AC receives the request message sent by the WALN and the selected device.
  • the request message carries the identifier of the AP.
  • the step 800 is initiated after the WLAN election and selection device receives the registration request of the terminal.
  • the AP identifier is the location information of the terminal acquired according to the location information of the terminal in the registration request after the WLAN discovery and selection device receives the registration request sent by the terminal.
  • the identifier of the corresponding AP is a correspondence between the first AP information and the AP, and a correspondence between the AP and the AC.
  • the request message may be sent to the corresponding AC according to the correspondence between the AP and the AC to request the attribute information of the AP.
  • an AC is used as an execution subject to introduce the technical solution of the present invention in detail. In practical applications, each AC can be implemented by using the technical solution of this embodiment.
  • the AC obtains, according to the AP identifier, attribute information of the AP corresponding to the AP identifier.
  • the AC sends the attribute information of the AP to the WLAN discovery and selection device.
  • the AC sends the attribute information of the AP to the WLAN discovery and selection device, and the WLAN discovery and selection device can be used according to the AP.
  • the attribute information identifies the availability of the AP to form the AP with availability to form a second AP list; and sends access parameter information including the second AP list and the offload policy message to the terminal, so that the terminal selects according to the access parameter information.
  • the WLAN corresponding to the target AP.
  • the WLAN discovery and selection method of the present embodiment is different from the foregoing embodiment shown in FIG. 11 only in the following:
  • the present embodiment describes the technical solution of the present invention on the AC selection device terminal side, and may refer to the foregoing embodiment shown in FIG. 11 in detail.
  • reference may also be made to the description of the related embodiments in the above-mentioned FIGS. 1 to 10, and details are not described herein again.
  • the WLAN discovery and selection operation can be performed when the terminal initiates packet switching data to the cellular network, thereby effectively improving the efficiency of WiFi discovery and selection. .
  • FIG. 13 is a schematic structural diagram of a WLAN discovery and selection device according to still another embodiment of the present invention.
  • the WALN discovery and selection device of this embodiment may specifically include: a receiving module 50 and a sending module 51,
  • the receiving module 50 is configured to receive a registration request sent by the terminal, where the registration request is initiated when the terminal initiates packet switching data to the cellular network; the registration request carries the parameter information of the terminal; for example, the parameter information of the terminal includes the location information of the terminal.
  • the cell ID of the terminal or the parameter information of the terminal may include a first AP list, where the first AP list is obtained by the terminal scanning the WLAN.
  • the sending module 51 is connected to the receiving module 50, and the sending module 51 is configured to send a request message to the AC according to the parameter information of the terminal in the registration request received by the receiving module 50 when the WLAN is used to offload the packet-switched data in the cellular network;
  • the receiving module 50 is further configured to receive attribute information of the AP returned by the AC.
  • the sending module 51 is configured to send, to the terminal, a notification message that carries the access parameter information, so that the terminal selects the WALN corresponding to the target AP according to the access parameter information, and the access parameter information is based on the attribute information of each AP corresponding to the parameter information of the terminal. Obtained with the offload policy message.
  • the WLAN discovery and selection device in this embodiment implements the description of the WLAN related method embodiment by using the foregoing module, and details are not described herein again.
  • the WLAN discovery and selection device of the embodiment by adopting the above technical solution, when the terminal initiates packet switching data to the cellular network, the terminal and the WLAN discovery and selection device perform the WLAN discovery and selection operation, thereby effectively improving the WiFi. Discovery and efficiency of choice.
  • FIG. 14 is a schematic structural diagram of an AC according to an embodiment of the present invention. As shown in Figure 14, this implementation The AC of the example may specifically include: a receiving module 60, an obtaining module 61, and a sending module 62.
  • the receiving module 60 is configured to receive the request message sent by the WALN discovery and selection device; the request message carries the identifier of the AP; the obtaining module 61 is connected to the receiving module 60, and the obtaining module 61 is configured to obtain the corresponding information according to the AP identifier received by the receiving module 60.
  • the attribute information of the AP is sent by the sending module 62, and the sending module 62 is configured to send the attribute information of the AP acquired by the obtaining module 61 to the WLAN discovery and selection device.
  • the implementation of the WLAN in the embodiment of the present invention is the same as the implementation of the related method embodiment.
  • the terminal and the WLAN discovery and selection device when the terminal initiates packet switching data to the cellular network, the terminal and the WLAN discovery and selection device perform the WLAN discovery and selection operation, thereby effectively improving the WiFi discovery and selection. effectiveness.
  • FIG. 15 is a schematic structural diagram of a system for discovering and selecting a WLAN according to another embodiment of the present invention.
  • the WLAN discovery and selection system of the present embodiment includes a terminal 70, a WLAN discovery and selection device 80, and an AC 90.
  • the WLAN discovery and selection device 80 is connected to the terminal 70 and the AC 90, respectively.
  • the terminal 70 is configured to send a registration request to the discovery and selection device 80 of the WLAN; the registration request is initiated when the terminal initiates packet-switched data to the cellular network; the registration request carries the parameter information of the terminal; for example, the parameter information of the terminal includes
  • the location information of the terminal such as the cell ID of the terminal or the parameter information of the terminal, may include a first AP list, where the first AP list is obtained by the terminal scanning the WLAN.
  • the WALN discovery and selection device 80 receives the registration request sent by the terminal 70; when the WLAN is used to offload the packet exchange data in the cellular network, the request message is sent to the AC 90 according to the parameter information of the terminal in the received registration request;
  • the AC 90 is configured to receive the request message sent by the WALN discovery and selection device 80, obtain the attribute information of the corresponding AP according to the received AP identifier, and send the obtained attribute information of the AP to the WLAN discovery and selection device 80.
  • the WALN discovery and selection device 80 is also used to send a notification message carrying the access parameter information to the terminal 70.
  • the terminal 70 is further configured to receive the carried access parameter information sent by the WALN discovery and selection device 80.
  • the notification message is obtained by selecting the WALN corresponding to the target AP according to the access parameter information, and the access parameter information is obtained according to the attribute information of each AP corresponding to the parameter information of the terminal and the offloading policy message.
  • the WLAN discovery and selection device 80 of the present embodiment may adopt the WLAN discovery and selection device shown in FIG. 13 above
  • the AC 90 may adopt the AC shown in FIG. 14 above, and may be specifically configured as shown in FIG. 11 or FIG. 12 described above.
  • the WLAN discovery and selection method implements the WLAN discovery and selection. For details, refer to the description of the foregoing embodiment, and details are not described herein again. Further, the implementation mechanism of the discovery and selection of the WLAN by the terminal 70 and the WLAN discovery and selection device 80 and the AC 90 in this embodiment can also refer to the descriptions of the embodiments shown in FIG. 1 to FIG. 10 in detail. Let me repeat.
  • the implementation mechanism of the WLAN discovery and selection by using the foregoing terminal and the WLAN discovery and selection device and the AC is the same as that of the foregoing related method embodiment.
  • the related method embodiment refer to the related method embodiment. The record is not repeated here.
  • the WLAN discovery and selection system of the present embodiment by adopting the above technical solution, when the terminal initiates packet switching data to the cellular network, the terminal, the WLAN discovery and selection device, and the AC perform the discovery and selection operation of the WLAN, thereby effectively Improve the efficiency of WiFi discovery and selection.
  • the technical solutions of the foregoing embodiment shown in FIG. 11 to FIG. 15 are technical solutions related to the interaction between the WLAN discovery and selection device and the AC in the technical solutions of FIG. 1 to FIG. 10, and thus the ACs involved in FIG. 1 to FIG.
  • the technical solutions are applicable to the embodiments shown in FIG. 11 to FIG. 15 above, and will not be described in detail here.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative
  • the division of the unit is only a logical function division, and the actual implementation may have another division manner, for example, multiple units or components may be combined or may be integrated into another system, or some features may be Ignore, or not execute.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the components displayed for the unit may or may not be physical units, ie may be located in one place, or may be distributed over multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium.
  • the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .

Abstract

本发明实施例提供一种无线局域网络的发现与选择方法、设备及系统与终端。其方法包括:当向蜂窝网发起分组交换数据时,向无线局域网络发现与选择设备发送注册请求;接收所述无线局域网络发现与选择设备发送的通知消息,所述通知消息为所述无线局域网络发现与选择设备确定需要采用无线局域网络对所述蜂窝网中的所述分组交换数据进行分流时发送的,所述通知消息中携带接入参数信息;根据所述接入参数信息选择目标无线接入点。采用本发明实施例的技术方案,当终端向蜂窝网发起分组业务数据时,都进行上述WLAN 的发现与选择操作,从而能够有效地提高WiFi发现与选择的效率。

Description

说 明 书
无线局域网络的发现与选择方法、 设备及系统与终端 本申请要求于 2012年 4月 10日提交中国专利局、 申请号为
20121 0103337. 6 , 发明名称为 "无线局 i或网络的发现与选择方法、 设 备及系统与终端" 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
本发明实施例涉及通信技术领域, 尤其涉及一种无线局域网络的发现 与选择方法、 设备及系统与终端。 背景技术
无线保真( wireless fidelity; WiFi )是一种可以将个人电脑、手持设备 (如 个人数码助理 ( Personal Digital Assistant; PDA ) 、 手机)等终端以无线方式 接入无线局域网络 ( Wireless Local Area Networks; WLAN )的技术。 现有技 术中, WiFi的热点遍布机场、 咖啡店、 旅馆、 书店以及校园等地方, 能够用 户访问电子邮件、 Web和流式媒体的互联网, 为用户提供了无线的宽带互联 网访问。 同时, WiFi也是在家里、 办公室或在旅途中上网的快速、 便捷的途 径。
伴随 3G网络乃至未来 4G 网络技术逐步应用和建设,各大运营商不得不 面对一个事实, 原来引以为傲的带宽和速度已经面临很大的压力, 因此, 采 用 WiFi实现对分组交换(Packet Switch; PS )数据的分流, 减少蜂窝数据 网络的拥堵正在得到各国运营商的普遍认可, 进入了快速推进期。 WiFi分流 ( Offload )就是采用 WiFi对数据流量的进行分流的技术, 目前各大运营商都 在大量的布放 WiFi热点, 以期望能够达到对 3G网络乃至未来的 4G 网络中 的数据业务进行分流。现有技术中, 支持 WiFi能力的终端中通常设置相应的 WiFi模块, 由于 WiFi若一直打开耗电量非常大, 用户使用时才会打开 WiFi 模块, 并搜索能够接入的无线接入点 (Acess Point; AP ) 列表, 然后选择一 个 AP接入。 但是, 在实现本发明的过程中发现现有技术至少存在如下缺陷: 现有技 术中, 用户并不能确定 WiFi的热点所处的位置, 也无法确定打开 WiFi功能 的时机。 用户通常只能在想使用 WiFi的时候打开 WiFi模块, 并试着搜索相 应的能够接入的 AP列表, 搜索不到的时候关闭 WiFi模块。 而网络无法辅助 终端在终端所在的区域内发现与选择 WiFi热点, 从而接入 WLAN网络。 因 此, 现有技术中 WiFi发现与选择的使用效率较低。 发明内容
本发明实施例提供一种无线局域网络的发现与选择方法、 设备及系统 与终端,用以弥补现有技术中 WiFi发现与选择的使用效率较低的缺陷, 能够 提高 WiFi发现与选择的使用效率。
一方面, 本发明实施例提供一种无线局域网络的发现与选择方法, 包括: 当向蜂窝网发起分组交换数据时, 向无线局域网络发现与选择设备发送 注册请求;
接收所述无线局域网络发现与选择设备发送的通知消息, 所述通知消息 中携带接入参数信息;
根据所述接入参数信息选择目标无线接入点对应的无线局域网络。
另一方面, 本发明实施例还提供一种无线局域网络的发现与选择方法, 包括:
接收终端发送的注册请求, 所述注册请求为终端向蜂窝网发起分组交换 数据时发起的;
当需要采用无线局域网络对所述蜂窝网中的所述分组交换数据进行分流 时, 获取接入参数信息;
向所述终端发送携带所述接入参数信息的通知消息, 以供所述终端根据 所述接入参数信息选择目标无线接入点对应的无线局域网络。
再一方面, 本发明实施例还提供一种终端, 包括:
发送模块, 用于当向蜂窝网发起分组交换数据时, 向无线局域网络发现 与选择设备发送注册请求;
接收模块,用于接收所述无线局域网络发现与选择设备发送的通知消息, 所述通知消息中携带接入参数信息; 选择模块, 用于根据所述接入参数信息选择目标无线接入点对应的无线 局域网络。
又一方面, 本发明实施例还提供一种无线局域网络发现与选择设备, 包括:
接收模块, 用于接收终端发送的注册请求, 所述注册请求为终端向蜂窝 网发起分组交换数据时发起的;
获取模块, 用于当需要采用所述无线局域网络对所述蜂窝网中的所述分 组交换数据进行分流时, 获取接入参数信息;
发送模块, 用于向所述终端发送携带所述接入参数信息的通知消息, 以 供所述终端根据所述接入参数信息选择目标无线接入点对应的无线局域网 络。
再另一方面,本发明实施例还提供一种无线局域网络的发现与选择系统, 包括如上所述的终端和如上所述的无线局域网络发现与选择设备。
本发明实施例的无线局域网络的发现与选择方法、设备及系统与终端, 当终端向蜂窝网发起分组交换数据时,向 WLAN发现与选择设备发送注册请 求; 接收 WLAN发现与选择设备发送的通知消息, 该通知消息为 WLAN发 现与选择设备确定需要采用 WLAN对蜂窝网中的分组交换数据进行分流时 发送的, 该通知消息中携带接入参数信息; 根据接入参数信息选择目标无线 接入点。 采用本发明实施例的技术方案, 当终端向蜂窝网发起分组交换数据 时, 都进行上述 WLAN的发现与选择操作, 从而能够有效地提高 WiFi发现 与选择的效率。 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筒单地介绍, 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为本发明一实施例提供的 WLAN的发现与选择方法的流程图。
图 2为本发明另一实施例提供的 WLAN的发现与选择方法的流程图。 图 3为本发明一实施例提供的 WLAN发现与选择方法的信令图。 图 4为本发明另一实施例提供的 WLAN发现与选择方法的信令图。
图 5为本发明又一实施例提供的 WLAN发现与选择方法的信令图。
图 6为本发明再一实施例提供的 WLAN发现与选择方法的信令图。
图 7为本发明一实施例提供的终端的结构示意图。
图 8为本发明另一实施例提供的终端的结构示意图。
图 9为本发明实施例提供的 WLAN发现与选择设备的结构示意图。
图 10为本发明实施例提供的 WLAN的发现与选择系统的结构示意图。 图 11为本发明再一实施例提供的 WLAN发现与选择方法的流程图。 图 12为本发明再一实施例提供的 WLAN发现与选择方法的流程图。 图 13为本发明再一实施例提供的 WLAN发现与选择设备的结构示意 图。
图 14为本发明实施例提供的 AC的结构示意图。
图 15为本发明另一实施例提供的 WLAN的发现与选择系统的结构示 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。
应理解, 本发明的技术方案可以应用于各种通信系统, 例如: 全球移 动通讯 ( GSM , Global System of Mobile communication ) 系统、 码分多址 ( CDMA, Code Division Multiple Access )系统、宽带码分多址( WCDMA, Wideband Code Division Multiple Access )系统、通用分组无线业务( GPRS , General Packet Radio Service ) 、 长期演进 ( LTE, Long Term Evolution ) 系统、 先进的长期演进( LTE- A , Long Term Evolution Advanced ) 系统、 通用移动通信系统 ( UMTS , Universal Mobile Telecommunication System ) 等, 本发明实施例并不限定, 但为描述方便, 本发明实施例将以 LTE网络 为例进行说明。 本发明实施例可以用于不同的制式的无线网络。 无线接入网络在不同 的系统中可包括不同的网元。 例如, LTE和 LTE-A中无线接入网络的网 元包括 eNB ( eNodeB , 演进型基站), WCDMA ( Wideband Code Division Multiple Access , 宽带码分多址 )中无线接入网络的网元包括 RNC ( Radio Network Controller , 无线网络控制器) 和 NodeB , 类似地, WiMax ( Worldwide Interoperability for Microwave Access , 全球微波互联接入) 等其它无线网络也可以使用与本发明实施例类似的方案, 只是基站系统中 的相关模块可能有所不同, 本发明实施例并不限定, 但为描述方便, 下述 实施例将以 eNodeB为例进行说明。
还应理解, 在本发明实施例中, 终端也可称之为用户设备(UE, User
Equipment )、移动台( MS , Mobile Station )、移动终端 ( Mobile Terminal ) 等, 该终端可以经无线接入网 ( RAN, Radio Access Network )与一个或多 个核心网进行通信, 例如, 终端可以是移动电话 (或称为"蜂窝"电话) 、 具有通信功能的计算机等, 例如, 终端还可以是便携式、 袖珍式、 手持式、 计算机内置的或者车载的移动装置。 图 1为本发明一实施例提供的 WLAN的发现与选择方法的流程图。如图 1所示, 本实施例的 WLAN的发现与选择方法的执行主体为可以为终端。 如 图所示, 本实施例的发现与选择方法, 具体可以包括如下步骤:
100、 当终端向蜂窝网发起分组交换数据时, 向 WLAN发现与选 ^殳备 发送注册请求;
101、 终端接收 WLAN发现与选择设备发送的通知消息;
本实施例中的通知消息为 WLAN发现与选择设备确定需要采用 WLAN 对蜂窝网中的分组交换数据进行分流时发送的, 该通知消息中携带接入参数 信息。 本发明实施例中的通知消息也可以称为 WiFi通知消息。
102、 终端根据接入参数信息选择目标 AP对应的 WLAN。
例如上述步骤 100-103具体可以为在终端中安装的一个客户端软件来实 现对终端的检测, 也可以是预置在终端中的软件模块或硬件模块来实现, 并 在终端向蜂窝网发起分组交换数据时,向 WLAN发现与选择设备发送注册请 求。 终端向 WLAN发现与选择设备发送注册请求即表示该终端具有 WiFi能 力。 具体地, 也可以在注册请求中携带该终端支持 WiFi能力的标识。 本实施例的 WLAN的发现与选择方法, 当向蜂窝网发起分组交换数据 时, 向 WLAN发现与选择设备发送注册请求; 接收 WLAN发现与选择设备 发送的通知消息, 通知消息为 WLAN发现与选择设备确定需要采用 WLAN 对蜂窝网中的该分组交换数据进行分流时发送的, 通知消息中携带接入参数 信息; 根据接入参数信息选择目标无线接入点。 采用本实施例的技术方案, 当终端向蜂窝网发起分组交换数据时, 都进行上述 WLAN 的发现与选择操 作, 从而能够有效地提高 WiFi发现与选择的效率。
可选地, 在上述图 1所示实施例的技术方案的基础上, 还可以包括如下 可选技术方案, 构成图 1所示实施例的可选实施例。
在图 1所示实施例的可选实施例中, 步骤 101中, 终端接收 WLAN发现 与选择设备发送的通知消息中携带的接入参数信息具体可以包括以下多种情 况:
第一种情况: 接入参数信息可以包括分流策略消息。 本实施例的分流策 略消息可以为预先在 WLAN发现与选择模块中设置的。该种情况对应由终端 侧选择目标 AP,对应的分流策略消息可以用以指示选择信号强度最好的 AP、 或者选择预设频段 AP, 例如预设频段可以为 2.4G的频段或者 5G的频段。 或者进一步地随着技术的发展, 预设频段还可以为其他频段, 在此不再—— 举例。本发明实施例中所有的预设频段均可以为 2.4G的频段或者 5G的频段, 或者其他频段, 后续实施例中不再——赘述。
此时对应地, 上述实施例中的步骤 102 "终端根据接入参数信息选择目 标 AP"之前, 具体还可以包括如下步骤: 终端扫描 WLAN, 获取第一 AP列 表, 该第一 AP列表中包括至少一个 AP标识, 以及每一个 AP的信号强度和 /或每一个 AP的频段, 还可以包括每一个 AP的 SSID等等。 例如对于分流策 略消息指示选择信号强度最好的 AP时, 在终端扫描 WLAN时, 同时还要获 取各 AP的信号强度, 并将每个 AP的信号强度标识在第一 AP列表中。 其中 对于分流策略指示选择预设频段的 AP, 在终端扫描 WLAN时, 同时还要获 取各 AP的频段, 并在第一 AP列表中标识每一个 AP的频段。
本发明实施例中, 终端扫描 WLAN之前隐含着还包括终端开启 WiFi功 能, 后续所有实施例同理, 不再——赘述。
进一步地, 上述实施例中的步骤 102 "终端根据接入参数信息选择目标 AP" , 具体可以包括: 终端根据分流策略消息从第一 AP列表中选择目标 AP。 例如终端可以从第一 AP列表中选择目标 AP, 如从获取的 AP中选择信号强 度最好的 AP、 或者选择预设频段的 AP。
第二种情况: 在上述第一种情况的基础上, 其中接入参数信息除了包括 分流策略消息, 还可以包括能够接入的 WLAN的 AP的服务集标识( Service Set Identifier; SSID )。 由于上述第一种情况中终端扫描 WLAN, 获取第一 AP 列表中可能包括与终端当前所在的蜂窝网不属于同一移动运营商网络的 AP , 或者与终端当前所在的蜂窝网不共享网络的 AP, 此时即使该 AP符合分流策 略消息的选择目标 AP的准则, 终端仍不能接入该目标 AP, 例如当移动和联 通两家运营商不共享网络时,当终端属于移动网络的用户,而终端扫描 WLAN 获取到的信号最强的 AP为联通的 AP, 分流策略消息正好就是用以指示选择 信号最好的 AP, 此时即使选择了该联通的 AP, 终端仍不可能接入的。 因此 此时分流策略消息中还需要携带能够接入的 WLAN的 AP的 SSID;其中能够 接入的 WLAN的 AP的 SSID具体用于标识能够接入的 AP所属的运营商。 本实施例中能够接入的 WLAN的 AP的 SSID具体可以包括多个。
例如终端当前所在的蜂窝网的为移动的, 那么本实施例中能够接入的 WLAN的 AP的 SSID至少应该包括移动网络的 AP的所有 SSID。 当在当前 区域移动和联通签有互用协议,这里的 SSID可以包括移动网络的 AP的所有 SSID和联通网络的 AP的所有 SSID。本实施例的分流策略消息同样可以预先 设置在 WLAN发现与选择模块中, 可以用于指示选择信号强度最好的 AP、 或者选择预设频段的 AP。
此时对应地, 上述实施例中的步骤 102 "终端根据接入参数信息选择目 标 AP"之前,具体还可以包括如下步骤:终端开启 WiFi功能,并扫描 WLAN, 获取第一 AP列表, 该第一 AP列表中包括至少一个 AP标识和每一个 AP对 应的 WLAN的 AP的 SSID。
进一步地, 上述实施例中的步骤 102 "终端根据接入参数信息选择目标 AP" , 具体可以包括: 终端根据分流策略消息、 能够接入的 WLAN的 AP的 SSID和第一 AP列表, 从第一 AP列表中选择目标 AP。 具体地, 终端根据分 流策略消息、 能够接入的 WLAN的 AP的 SSID和第一 AP列表中标识的每 一个 AP的 SSID,以及第一 AP列表中每一个 AP的信号强度和 /或每一个 AP 的频段, 从第一 AP列表中包括的至少一个 AP中选择目标 AP。
例如终端可以先从第一 AP列表中获取 SSID属于能够接入的 WLAN的
SSID的 AP, 然后再根据分流策略消息中从获取的 AP中选择目标 AP, 如从 获取的 AP中选择信号强度最好的 AP、 或者选择预设频段的 AP。
第三种情况: 接入参数信息可以包括接入参数信息包括分流策略消息和 第二 AP列表。
其中该第三种情况可以用在步骤 100中,终端向 WLAN发现与选择设备 发送注册请求中携带有终端的位置信息的第一场景下。 其中终端的位置信息 可以为终端所在的小区 ID, 或者终端的经纬度信息, 或者还可以为其他的能 够标识终端的位置信息
其中该第二 AP列表为 WLAN发现与选择设备在接收到注册请求之后, 获取终端的位置信息对应的所有 AP标识中的每一个 AP的属性信息,并根据 终端的位置信息(如终端所在的小区(Cell ) ID )对应的所有 AP标识中的每 一个 AP的属性信息, 对每一个 AP的可用性进行识别获取的, 第二 AP列表 中包括至少一个能够供终端接入的 AP标识和能够供终端接入的每一个 AP的 属性信息; 其属性信息中包括信噪比、 负荷和吞吐量中的至少一个。 同理, 本实施例中的分流策略消息具体可以用于指示选择信号强度最好的 AP、选择 负荷最小的 AP、 或者选择预设频段的 AP
本实施例中, WLAN发现与选择设备获取终端的位置信息对应的所有 AP标识中的每一个 AP的属性信息, 具体可以包括如下两种方式: 第一种方 式为 WLAN 发现与选择设备中预先存储有所有接入控制器 ( Access Controller; AC )中的所有 AP的属性信息, 所有 AP的属性信息包括所有 AC 中每一个 AC中的所有 AP的属性信息, 每一个 AP的属性信息包括信噪比、 负荷和吞吐量中的至少一个,还可以包括 AP的频段。例如此种方式中 WLAN 发现与选择设备可以预先从所有 AC中获取的, 或者是所有 AC周期性地向 WLAN发现与选择设备中上报的。 这样, WLAN发现与选择设备在接收到 注册请求之后, 可以从 WLAN发现与选择设备存储的所有 AC中的所有 AP 的属性信息中获取终端的位置信息对应的所有 AP标识中的每一个 AP的属性 信息。
第一种方式中为 WLAN发现与选择设备预先获取的所有 AC 中的所有 AP的属性信息, 可能不具备实时性。 为了解决第一种方式的缺陷, 可以引入 第二种方式, 在第二种方式中, 在 WLAN发现与选择设备中还存储有终端的 位置信息与 AP的对应关系、 以及 AP与 AC的对应关系。 如下述表 1是以终 端的位置信息为 Cell ID , 且将 Cell ID与 AP的对应关系, 以及 AP与 AC的 对应关系合在一个表中为例。 WLAN发现与选择设备在接收到注册请求之后, WLAN发现与选择设备先根据终端的 Cell ID以及 Cell ID与 AP的对应关系, 获取该 Cell ID对应的所有 AP标识,并根据 AP与 AC的对应关系获取该 Cell ID对应的所有 AP标识对应的各个 AC标识,然后 WLAN发现与选择设备与 每个 AC交互, 获取该 Cell ID对应的所有 AP的属性信息。
Figure imgf000011_0001
其中 AP的属性信息包括 AP的信噪比、 AP的负荷以及 AP的吞吐量中 的至少一个, 还可以包括 AP所属的频段。 当分流策略消息具体可以用于指 示选择负荷最小的 AP时, AP的属性信息中必须包括 AP的负荷。 WLAN 发现与选择设备根据每一个 AP的属性信息,对每一个 AP的可用性进行识别 获取的第二 AP 列表, 具体指的是, 在 WLAN发现与选择模块中都存储有 AP可用性的属性信息阈值, 例如存储有 AP的信噪比阈值、 AP的负荷阈值 和 AP的吞吐量阈值, 当 AP的信噪比大于信噪比阈值、 AP的负荷大于符合 阈值或者 AP的吞吐量大于吞吐量阈值时, 确定该 AP不可用, 否则当 AP的 信噪比小于等于信噪比阈值、 AP的负荷小于等于符合阈值或者 AP的吞吐量 小于等于吞吐量阈值时, 该 AP可用。 这样, 采用上述方式根据每一个 AP的 属性信息, 对每一个 AP的可用性进行识别可以获取到具有可用性的第二 AP 列表。 可选地, 该 AP的属性信息中还可以包括 AP的频段, 例如该 AP属于 2.4G频段还是 5G频段。 这样在后续中, 当分流策略信息为选择预设频段的 AP时, 终端可以直接根据 AP的属性信息来选择, 可以不用再扫描各 AP的 频段。
对应地,在上述图 1所示实施例中的步骤 101终端接收 WLAN发现与选 择设备发送的通知消息之后, 步骤 102 终端根据接入参数信息选择目标 AP 之前, 还可以包括如下步骤: 终端开启 WiFi功能, 并扫描 WLAN, 获取第 一 AP列表, 该第一 AP列表中包括至少一个 AP标识, 该第一 AP列表中还 可以标识有每一个 AP的信号强度。
对应地, 在上述图 1所示实施例中的步骤 101中, 终端根据接入参数信 息选择目标 AP, 具体可以包括: 终端根据分流策略消息, 从第一 AP列表和 第二 AP列表的交集中选择目标 AP。 例如, 终端可以先从扫描到的第一 AP 列表和 WLAN发现与选择模块发送的具有可用性的第二 AP列表的交集(即 既能被终端扫描到, 又具有可用性)中选择至少一个 AP, 然后再从该至少一 个 AP中选择信号强度最好的 AP、 选择负荷最小的 AP、 或者选择预设频段 的 AP作为目标 AP。
可选地, 其中该第三种情况还可以用在步骤 100中, 终端向 WLAN发现 与选择设备发送注册请求中携带有第一 AP列表的第二场景下。
此时对应地,在步骤 100 "终端向 WLAN发现与选择设备发送注册请求" 之前, 还可以包括如下步骤: 终端开启 WiFi功能, 并扫描 WLAN, 获取第 一 AP列表, 该第一 AP列表中包括至少一个 AP标识, 该第一 AP列表中还 可以标识有每一个 AP的信号强度。
对应地步骤 100 "终端向 WLAN发现与选择设备发送注册请求", 具体 可以包括:终端向 WLAN发现与选择设备发送携带第一 AP列表的注册请求。
可选地, 该种场景下的第二 AP 列表为 WLAN发现与选择设备从第一 AP列表中选取的; 第二 AP列表中包括至少一个能够供终端接入的 AP标识 和能够供终端接入的每一个 AP 的属性信息; 分流策略消息用以指示选择信 号强度最好的 AP、 选择负荷最小的 AP、 或者选择预设频段的 AP; 其中每一 个 AP的频段可以在终端侧扫描获取, 也可以从 AC中获取, 携带在 AP的属 性信息中。
例如, WLAN发现与选择设备中可以预先存储有所有 AC中的所有 AP 的属性信息(可以 AP的标信噪比、 负荷和吞吐量中的至少一个, 以及 AP的 频段等等), 具体可以为 WLAN发现与选择设备预先从所有 AC中获取的, 或者是所有 AC周期性地向 WLAN发现与选择设备中上报的。 WLAN发现与 选择设备可以从存储的所有 AC中的所有 AP的属性信息中,获取第一 AP列 表中的每个 AP对应的属性信息, 并根据每一个 AP的属性信息识别每一个 AP的可用性, 将第一 AP列表中具有可用性的 AP形成第二 AP列表, 该第 二 AP列表中还可以包括每一个具有可用性的 AP的频段。详细可以参考上述 第三种情况下的第一场景下的第一种方式的相关实施例的记载, 在此不再赘 述。 或者 WLAN发现与选择设备中预存储有 AP与 AC的对应关系, WLAN 发现与选择设备在接收到携带第一 AP列表的注册请求之后, 可以与第一 AP 列表中每一个 AP对应的 AC交互, 获取每一个 AP的属性信息, 然后再从第 一 AP列表中识别出具有可用性的 AP构成第二 AP列表。 其中 AP的属性信 息, 以及根据每一个 AP的属性信息识别出具有可用性的 AP, 详细可以参考 上述第三种情况下的第一场景下的第二种方式的相关实施例的记载, 在此不 再赘述。
进一步可选地, 上述实施例中的步骤 102 "终端根据接入参数信息选择 目标 AP" , 具体可以包括: 终端根据分流策略消息, 从第二 AP列表中选择 目标 AP。 例如终端从第二 AP列表中选择信号强度最好的 AP、 选择负荷最 小的 AP、 或者选择预设频段的 AP作为目的 AP, 具体选择的实现过程可以 参考上述相关实施例的记载, 在此不再赘述。
第四种情况: 接入参数信息包括目标 AP的标识。
该第四种情况应用在终端向 WLAN 发现与选择设备发送注册请求中携 带有第一 AP列表的场景下。
此时对应地,在步骤 100 "终端向 WLAN发现与选择设备发送注册请求" 之前, 还可以包括如下步骤: 终端开启 WiFi功能, 并扫描 WLAN, 获取第 一 AP列表, 该第一 AP列表中包括至少一个 AP标识, 该第一 AP列表中还 可以标识有每一个 AP的信号强度。
对应地步骤 100 "终端向 WLAN发现与选择设备发送注册请求", 具体 可以包括:终端向 WLAN发现与选择设备发送携带第一 AP列表的注册请求。 该场景下, 目标 AP的标识为 WLAN发现与选择设备根据第一 AP列表 与 AC进行交互, 从第一 AP列表中选取第二 AP列表; 并根据分流策略消息 从第二 AP列表中获取的; 第二 AP列表中包括至少一个能够供终端接入的 AP标识和能够供终端接入的每一个 AP的属性信息; 该方案中分流策略消息 具体可以用以指示选择负荷最小的 AP、 或者选择预设频段的 AP。
该第四种情况与上述第三种情况的第二场景的区别在于: 该第四种情况 中在 WLAN发现与选择设备中根据分流策略消息从第二 AP列表中获取的目 标 AP, 而第三种情况第二场景是在终端侧进行, 其余实现过程相同, 详细可 以参考上述实施例的记载, 在此不再赘述。
进一步, 需要说明的是, 在上述技术方案的基础上, 步骤 102终端根据接 入参数信息选择目标 AP之后, 还可以包括如下步骤:
当在第一预设时间段内终端检测不到目标 AP, 则确定分流失败, 关闭 WiFi功能;
或者还可以包括如下步骤:
当在第二预设时间段内终端未检测到分组交换数据的数据流量时, 关闭 WiFi功能;
或者还可以包括如下步骤:
( 1 )当能够通过目标 AP接入 WLAN时,检测终端在 WLAN中的速度; ( 2 )终端判断速度是否小于预设速度阈值;当速度小于预设速度阈值时, 执行(3 ); 否则当速度大于等于预设速度阈值时, 暂时不执行任何操作。
( 3 )终端确定 WLAN的易用性差, 关闭 WiFi功能。
进一步需要说明的是, 当上述分流失败时, 终端还可以将失败结果上报 给 WLAN发现与选择设备, 以供 WLAN发现与选择设备进行切换成功率统 计以及更新是否需要采用 WLAN 对蜂窝网中的该分组交换数据进行分流的 算法等操作。
综上所述, 在图 1所示实施例的可选实施例中, 终端扫描的 WLAN得到 的第一 AP列表中可以标识有每一个 AP的信号强度、每一个 AP所属频段以 及每一个 AP的 SSID等等。 而 WLAN发现与选择设备获取的 AP的属性信 息可以包括有 AP的信噪比、 负荷以及吞吐量至少一个, 还可以包括 AP所属 频段等等。
在图 1所示实施例的可选实施例, 通过采用上述技术方案, 当终端向蜂 窝网发起分组交换数据时, 都进行上述 WLAN的发现与选择操作, 从而能够 有效地提高 WiFi发现与选择的效率。
图 2为本发明另一实施例提供的 WLAN的发现与选择方法的流程图。如 图 2所示, 本实施例的 WLAN的发现与选择方法的执行主体为 WLAN的发 现与选择设备。 本实施例的 WLAN的发现与选择方法, 具体可以包括:
200、 WLAN的发现与选择设备接收终端发送的注册请求;
该注册请求为终端向蜂窝网发起分组交换数据时,开启 WiFi功能之后发 起的。 因此 WLAN的发现与选择设备与终端协商, 发送该注册请求即表示该 终端支持 WiFi能力, 或者可选地, 还可以在注册请求中携带终端支持 WiFi 能力的标识。
201、 当需要采用 WLAN 对蜂窝网中的该分组交换数据进行分流时, WLAN的发现与选择设备获取接入参数信息;
202、 WLAN 的发现与选择设备向终端发送携带接入参数信息的通知消 息, 以供终端根据接入参数信息选择目标 AP对应的 WLAN。
本实施例的 WLAN的发现与选择方法与上述图 1所示实施例的区别仅在 于: 本实施例在 WLAN的发现与选择设备侧描述本发明的技术方案; 而上述 图 1所示实施例在终端侧描述本发明的技术方案, 详细可以参考上述图 1所 示实施例的记载, 在此不再赘述。
可选地, 本实施例中, 当 WLAN 的发现与选择设备判断不需要采用 WLAN对蜂窝网中的该分组交换数据进行分流时, WLAN的发现与选择设备 也可以告诉终端。
本实施例的 WLAN的发现与选择方法, WLAN的发现与选择设备通过 接收终端发送的注册请求; 当需要采用 WLAN对蜂窝网中的该分组交换数据 进行分流时, WLAN的发现与选择设备获取接入参数信息; 向终端发送携带 接入参数信息的通知消息, 以供终端根据接入参数信息选择目标 AP。 采用本 实施例的 WLAN的发现与选择方法, 当终端向蜂窝网发起分组交换数据时, 都进行上述 WLAN的发现与选择操作, 从而能够有效地提高 WiFi发现与选 择的效率。 可选地, 在上述图 2所示实施例的技术方案的基础上, 还可以包括如下 可选技术方案, 构成图 2所示实施例的可选实施例。
在图 2所示实施例的可选实施例中, 上述实施例中的步骤 200之后, 步 骤 201之前, 还可以包括如下步骤: WLAN的发现与选择设备判断是否需要 采用 WLAN对蜂窝网中的该分组交换数据进行分流;
其中上述步骤 "WLAN的发现与选择设备判断是否需要采用 WLAN对 蜂窝网中的该分组交换数据进行分流" , 具体可以根据业务类型判断是否需 要采用 WLAN对蜂窝网中的该分组交换数据进行分流,例如具体可以包括如 下步骤:
( 1 )WLAN的发现与选择设备从蜂窝网网元(如基站控制器( Base Station Controller; BSC )或者无线网络控制器 ( Radio Network Controller; RNC ) ) 或者核心网网元获取分组交换数据的业务类型;
( 2 ) WLAN的发现与选择设备根据业务类型判断是否需要采用 WLAN 对蜂窝网中的分组交换数据进行分流。
例如, 当 WLAN的发现与选择设经备判断确定业务类型为文件传输协议 ( File Transfer Protocol; FTP ) 下载类型时, WLAN的发现与选择设备确定 需要采用 WLAN对蜂窝网中的该分组交换数据进行分流; 当 WLAN的发现 与选择设备经判断确定业务类型为网络电话 ( Voice over Internet Protocol; VoIP ) 的语音类型时, WLAN的发现与选择设备确定不需要采用 WLAN对 蜂窝网中的该分组交换数据进行分流; 当 WLAN的发现与选择设备经判断确 定业务类型为彩信业务类型时, WLAN 的发现与选择设备确定需要采用 WLAN对蜂窝网中的该分组交换数据进行分流; 当 WLAN的发现与选择设 备经判断确定业务类型为视频业务类型时, WLAN的发现与选择设备确定需 要采用 WLAN对蜂窝网中的该分组交换数据进行分流; 当 WLAN的发现与 选择设备经判断确定业务类型为即时通信业务类型时, WLAN的发现与选择 设备确定需要采用 WLAN对蜂窝网中的该分组交换数据进行分流;
或者针对于上述的每一种需要采用 WLAN对蜂窝网中的该分组交换数 据进行分流的业务类型, WLAN的发现与选择设备还可以再获取蜂窝网的负 荷, 例如从 BSC或者其他网元获取蜂窝网的负荷; 并判断蜂窝网的负荷是否 大于等于预设负荷阈值, 当蜂窝网的负荷大于等于预设负荷阈值时, 确定需 要采用 WLAN对蜂窝网中的该分组交换数据进行分流的业务类型;否则当蜂 窝网的负荷小于预设负荷阈值时,确定不需要采用 WLAN对蜂窝网中的该分 组交换数据进行分流的业务类型。
上述技术方案仅以上述几种业务类型, 以及根据上述几种业务类型的采 用 WLAN对蜂窝网中的分组交换数据进行分流的情况为例介绍本发明的技 术方案。 实际应用中, 随着技术的发展, 还可以采用其他业务类型确定是否 需要采用 WLAN对蜂窝网中的分组交换数据进行分流, 在此不再赘述。
可选地, 在图 2所示实施例的可选实施例中, 上述步骤 "WLAN的发现 与选择设备判断是否需要采用 WLAN 对蜂窝网中的该分组交换数据进行分 流", 具体可以根据终端对应的用户的优先级判断是否需要采用 WLAN对蜂 窝网中的该分组交换数据进行分流, 例如具体可以包括如下步骤:
( A ) WLAN 的发现与选择设备从归属位置寄存器 (Home Location Register; HLR ) 中获取终端对应的用户的优先级; 终端对应的用户即指的是 该终端中所装的客户识别模块 (Subscriber Identity Module; SIM)对应的用户。
例如在 HLR中存储有终端对应的用户的签约信息,该签约信息中存储有 终端对应的用户的优先级, 例如移动网络中, 全球通的优先级最高。 对于每 一种类型的用户, 网络都会为其设置对应的优先级。 优先级越高的, 保证其 一直享受的是蜂窝网的服务, 不对其对应的业务的数据进行分流至 WLAN, 而对于优先级越低的用户, 当蜂窝网的负荷较大, 优先将优先级低的用户分 流至 WLAN。 因此蜂窝网中, 优先保证全球通用户处于蜂窝网中。 等于预设优先级阈值; 当终端对应的用户优先级大于等于预设优先级阈值时, 执行步骤(C ); 否则当终端优对应的用户先级小于预设优先级阈值时, 执行 步骤( D );
或者可选地, 当终端对应的用户优先级小于预设优先级阈值时, WLAN 的发现与选择设备也可以先获取蜂窝网的负荷, 并判断蜂窝网的负荷是否大 于等于预设负荷阈值, 当蜂窝网的负荷大于等于预设负荷阈值时, 执行步骤 ( D ) ; 否则当蜂窝网的负荷小于预设负荷阈值时, 执行(C );
( C ) WLAN的发现与选择设备确定不需要采用 WLAN对蜂窝网中的该 分组交换数据进行分流; 结束。 ( D ) WLAN的发现与选择设备确定需要采用 WLAN对蜂窝网中的该分 组交换数据进行分流, 结束。
可选地, 与上述在图 1所示实施例的可选实施例中相似, 在图 2所示实 施例的可选实施例中, 其中步骤 201中 "WLAN的发现与选择设备获取接入 参数信息" 具体可以包括: WLAN的发现与选择设备获取分流策略消息; 该 分流策略消息用以指示选择信号强度最好的 AP、 或者选择预设频段的 AP。
对应地, 步骤 202 "WLAN的发现与选择设备向终端发送携带接入参数 信息的通知消息", 具体可以包括: WLAN 的发现与选择设备向终端发送携 带分流策略消息的通知消息, 以供终端扫描 WLAN, 获取第一 AP列表, 该 第一 AP列表中包括至少一个 AP标识, 以及每一个 AP的信号强度或者每一 个 AP的频段; 并根据分流策略消息, 从第一 AP列表中选择目标 AP。
可选地, 与上述在图 1所示实施例的可选实施例中相似, 在图 2所示实 施例的可选实施例中, 其中步骤 201中 "WLAN的发现与选择设备获取接入 参数信息" 具体可以包括: WLAN的发现与选择设备获取分流策略消息和供 终端接入的 WLAN的 AP的 SSID, 以及每一个 AP的信号强度或者每一个 AP的频段; 该分流策略消息用以指示选择信号强度最好的 AP、 或者选择预 设频段的 AP。
对应地, 步骤 202 "WLAN的发现与选择设备向终端发送携带接入参数 信息的通知消息", 具体可以包括: WLAN 的发现与选择设备向终端发送携 带分流策略消息和能够接入的 WLAN的 AP的 SSID的通知消息, 以供终端 扫描 WLAN, 获取第一 AP列表, 该第一 AP列表中包括至少一个 AP标识和 每一个 AP对应的 SSID, 以及每一个 AP的信号强度或者每一个 AP的频段; 并根据分流策略消息、 能够接入的 WLAN的 AP 的 SSID和第一 AP列表, 从第一 AP列表中选择目标 AP。
可选地, 在图 2所示实施例的可选实施例中, 上述图 2所示实施例的步 骤 200中 WLAN的发现与选择设备接收终端发送的注册请求中还携带有终端 的位置信息。 该终端的位置信息为终端所在的小区 ID 或者终端的经纬度信 息, 或者还可以为其他的能够标识终端的位置信息。
此时对应地, 接入参数信息具体可以包括分流策略信息和第二 AP列表。 对应地, 步骤 201中 "WLAN的发现与选择设备获取接入参数信息" 具体可 以包括如下步骤:
( 11 ) WLAN的发现与选择设备获取终端的位置信息对应的所有 AP标 识;
( 12 ) WLAN的发现与选择设备获取终端的位置信息对应的所有 AP标 识中的每一个 AP的属性信息;
例如, 参考上述终端侧的图 1所示实施例的可选实施例中的第二种情况 下的第一场景中的记载, WLAN的发现与选择设备可以从预存储的所有 AC 中的 AP信息中, 获取每一个 AP对应的属性信息; 具体地, WLAN发现与 选择设备可以预先从所有 AC中获取所有 AC中的 AP的属性信息(包括 AP 的信噪比、 负荷和吞吐量中的至少一个, 还可以包括 AP所属的频段等等), 或者由所有 AC定期的向 WLAN发现与选择设备上报所有 AC中的 AP的属 性信息。
由于上述方式没有实时性,当 AC中的 AP的属性信息发生更新时, WLAN 发现与选择设备中存储的所有 AC中的 AP信息不是最新的。 此时 WLAN的 发现与选择设备还可以根据终端的位置信息对应的所有 AP标识与每一个 AP 标识对应的 AC交互, 获取终端的位置信息对应的所有 AP标识中的每一个 AP的属性信息。其中在 WLAN发现与选择设备都预存储有 AP与 AC的对应 关系, 以及终端的位置信息与 AP的对应关系, 如上述表 1所示即为其中一 种表现形式。
( 13 )WLAN的发现与选择设备根据终端的位置信息对应的所有 AP标识 中每一个 AP对应的属性信息,识别每一个 AP的可用性并获取第二 AP列表, 第二 AP列表包括至少一个能够供终端接入的 AP标识和能够供终端接入的每 一个 AP的属性信息;
其中 AP的属性信息包括 AP的信噪比、 AP的负荷以及 AP的吞吐量中 的至少一个。 可选地, 该 AP的属性信息中还可以包括 AP的频段, 例如该 AP属于 2.4G频段还是 5G频段。 当分流策略消息用以指示选择负荷最小的 AP时, 该 AP的属性信息中必须包括 AP的负荷。
例如在 WLAN发现与选择模块中都存储有 AP可用性的属性信息阈值, 例如存储有 AP的信噪比阈值、 AP的负荷阈值和 AP的吞吐量阈值, 当 AP 的信噪比大于信噪比阈值、 AP的负荷大于符合阈值或者 AP的吞吐量大于吞 吐量阈值时, 确定该 AP不可用, 否则当 AP的信噪比小于等于信噪比阈值、 AP 的负荷小于等于符合阈值或者 AP 的吞吐量小于等于吞吐量阈值时, 该 AP可用。 这样, 采用上述方式根据每一个 AP的属性信息, 对每一个 AP的 可用性进行识别可以获取到具有可用性的第二 AP列表。
( 14 ) WLAN的发现与选择设备获取预设的分流策略信息; 分流策略消 息用以指示选择信号强度最好的 AP、 选择负荷最小的 AP、 或者选择预设频 段的 AP。
对应地, 步骤 202 "WLAN的发现与选择设备向终端发送携带接入参数 信息的通知消息", 具体可以包括: WLAN 的发现与选择设备向终端发送携 带分流策略信息和第二 AP列表的通知消息, 以供终端扫描 WLAN, 获取第 一 AP列表, 第一 AP列表中包括至少一个 AP标识; 并根据分流策略消息, 从第一 AP列表和第二 AP列表的交集中选择目标 AP。
可选地,上述图 2所示实施例中的步骤 200中 WLAN的发现与选择设备 接收终端发送的注册请求中还携带有第一 AP列表,该第一 AP列表为终端通 过扫描 WLAN获取的, 第一 AP列表中包括至少一个 AP标识。
此时对应地, 接入参数信息仍可以包括分流策略信息和第二 AP列表。 对应地, 步骤 201中 "WLAN的发现与选择设备获取接入参数信息" 具体可 以包括如下步骤:
( 21 ) WLAN的发现与选择设备获取每一个 AP标识对应的属性信息; 同理, WLAN的发现与选择设备可以从预存储的所有 AC中的 AP信息 中, 获取第一 AP列表中每一个 AP对应的属性信息; 具体地, WLAN发现 与选择设备可以预先从所有 AC中获取所有 AC中的 AP的属性信息 (该属性 信息可以包括 AP的信噪比、 负荷以及吞吐量中的至少一个, 还可以包括 AP 所属的频段等等), 或者由所有 AC定期的向 WLAN发现与选择设备上报所 有 AC中的 AP的属性信息。
由于上述方式没有实时性,当 AC中的 AP的属性信息发生更新时, WLAN 发现与选择设备中存储的所有 AC 中的 AP 的属性信息不是最新的。 此时 WLAN的发现与选择设备还可以与第一 AP列表中的每一个 AP标识对应的 AC交互, 获取每一个 AP的属性信息。 其中在 WLAN发现与选择设备都预 存储有 AP与 AC的对应关系, WLAN发现与选择设备可以根据 AP与 AC的 对应关系, 获取到每一个 AP对应的 AC, 从而与该 AC交互, 获取每一个 AP的属性信息。
( 22 ) WLAN的发现与选择设备根据第一 AP列表中每一个 AP标识对 应的属性信息, 识别每一个 AP的可用性并从第一 AP列表中选取第二 AP列 表,第二 AP列表包括至少一个能够供终端接入的 AP标识和能够供终端接入 的每一个 AP的属性信息;
( 23 ) WLAN的发现与选择设备获取预设的分流策略信息; 该分流策略 消息用以指示选择信号强度最好的 AP、 选择负荷最小的 AP、 或者选择预设 频段的 AP。
对应地, 步骤 202 "WLAN的发现与选择设备向终端发送携带接入参数 信息的通知消息", 具体可以包括: WLAN 的发现与选择设备向终端发送携 带分流策略信息和第二 AP列表的通知消息, 以供终端根据分流策略消息, 从第二 AP列表中选择目标 AP。
可选地, 步骤(23 )具体地可以采用如下步骤(33 )替换。
( 33 ) WLAN的发现与选择设备根据预设的分流策略信息从第二 AP列 表中获取的目标 AP的标识; 该分流策略消息用以指示选择负荷最小的 AP、 或者选择预设频段的 AP;
对应地, 步骤 202 "WLAN的发现与选择设备向终端发送携带接入参数 信息的通知消息", 具体可以包括: WLAN 的发现与选择设备向终端发送携 带目标 AP的标识的通知消息。
进一步需要说明的是, 当上述分流失败时, WLAN发现与选择设备还可 以接收终端上报的失败结果, 并用于进行切换成功率统计以及更新是否需要 采用 WLAN对蜂窝网中的该分组交换数据进行分流的算法等操作。
综上所述, 在图 2所示实施例的可选实施例中, 终端扫描的 WLAN得到 的第一 AP列表中可以标识有每一个 AP的信号强度、每一个 AP所属频段以 及每一个 AP的 SSID等等。 而 WLAN发现与选择设备获取的 AP的属性信 息可以包括有 AP的信噪比、 负荷以及吞吐量至少一个, 还可以包括 AP所属 频段等等。 图 2所示实施例的可选实施例与上述图 1所示实施例的可选实施例的区 别仅在于: 图 2所示实施例的可选实施例在 WLAN的发现与选择设备侧描述 本发明的技术方案; 而上述图 1所示实施例的可选实施例在终端侧描述本发 明的技术方案, 详细可以参考上述图 1所示实施例的可选实施例的记载, 在 此不再赘述。
采用上述实施例的 WLAN 的发现与选择方法, 当终端向蜂窝网发起分 组交换数据时, 都进行上述 WLAN的发现与选择操作, 从而能够有效地提高 WiFi发现与选择的效率。
图 3为本发明一实施例提供的 WLAN发现与选择方法的信令图。 如图 3 所示, 本实施例的 WLAN发现与选择方法, 具体可以包括如下步骤:
300、 当终端向蜂窝网 (如 BSC )发起分组交换数据时, 终端开启 WiFi 功能;
301、 终端向 WLAN发现与选择设备发送注册请求;
该注册请求中可以携带有终端指示 WiFi能力的标识。
302、 WLAN 的发现与选择设备接收终端发送的注册请求之后, 判断是 否需要采用 WLAN对蜂窝网中的该分组交换数据进行分流;
例如具体可以根据业务类型或者终端对应的用户的优先级判断是否需要 采用 WLAN对蜂窝网中的该分组交换数据进行分流,详细可以参考上述实施 例的记载, 在此不再赘述。
本发明实施例中均以需要采用 WLAN 对蜂窝网中的该分组交换数据进 行分流为例介绍本发明的技术方案, 当不需要 WLAN对蜂窝网中的该分组交 换数据进行分流时, WLAN的发现与选择设备也可以将不需要 WLAN对蜂 窝网中的该分组交换数据进行分流的结果告诉终端。
303、 当需要 WLAN对蜂窝网中的该分组交换数据进行分流时, WLAN 的发现与选择设备获取预设的分流策略消息和能够供终端接入的 WLAN 的 AP的 SSID;
304、 WLAN 的发现与选择设备向终端发送携带分流策略消息和能够供 终端接入的 WLAN的 AP的 SSID的通知消息;
305、 终端接收 WLAN的发现与选择设备发送的携带分流策略消息和能 够供终端接入的 WLAN的 AP的 SSID的通知消息, 获取分流策略消息和能 够供终端接入的 WLAN的 AP的 SSID; 306、 终端扫描 WLAN, 获取第一 AP列表, 该第一 AP列表中包括至少 一个 AP标识和每一个 AP对应的 WLAN的 AP的 SSID;
307、 终端根据分流策略消息和能够接入的 WLAN的 AP的 SSID, 从第 一 AP列表中选择目标 AP对应的 WLAN。
本实施例中的分流策略消息可以包括选择信号强度最好的 AP、或者选择 预设频段的 AP, 例如选择频段为 2.4G的 AP或者选择频段为 5G的 AP。
可选地, 本实施例中的步骤 300与步骤 301-305中任意一个之间可以没 有先后顺序限制。
本实施例的 WLAN发现与选择方法, 通过采用上述技术方案, 能够在当 终端向蜂窝网发起分组交换数据时, 都进行上述 WLAN的发现与选择操作, 从而能够有效地提高 WiFi发现与选择的效率。
图 4为本发明另一实施例提供的 WLAN发现与选择方法的信令图。如图 4所示, 本实施例的 WLAN发现与选择方法, 具体可以包括如下步骤:
400、 当终端向蜂窝网 (如 BSC )发起分组交换数据时, 终端开启 WiFi 功能;
401、终端向 WLAN发现与选择设备发送携带有终端所在的小区 ID的注 册请求;
本实施例中以终端的位置信息为终端所在的小区 ID 为例来介绍本发明 的技术
402、 WLAN 的发现与选择设备接收终端发送的注册请求之后, 判断是 否需要采用 WLAN对蜂窝网中的该分组交换数据进行分流;
403、 当需要 WLAN对蜂窝网中的该分组交换数据进行分流时, WLAN 的发现与选择设备根据预存储的小区 ID与 AP之间的对应关系, 以及 AP与 AC的对应关系, 获取终端所在的小区 ID对应的 AP , 以及对应的 AC。
404、 WLAN的发现与选择设备与终端所在的小区 ID对应的所有 AC交 互, 获取终端所在的小区 ID对应的所有 AP的属性信息; 图 4中以画出一个 AC为例。
具体交互过程可以为 WLAN的发现与选择设备向各 AC发送请求, 以请 求获取对应的 AP的属性信息, 并由 AC向 WLAN的发现与选择设备返回对 应的 AP的属性信息。 本实施例中是以 WLAN发现与选择设备与 AC交互获 取终端所在的小区 ID对应的所有 AP的属性信息。 实际应用中所有 AC也可 以周期性地向 WLAN发现与选择设备上报所有 AP的属性信息,或者 WLAN 发现与选择设备预先从 AC中获取的。 这样 WLAN发现与选择设备还可以从 预存储的所有 AC的 AP的属性信息中获取终端所在的小区 ID对应的所有 AP 的属性信息。 详细可以参考上述实施例的记载, 在此不再赘述。
例如每一个 AP的属性信息包括该 AP的信噪比、 AP的负荷以及 AP的 吞吐量, 或者还可以包括 AP的频段, 例如该 AP属于 2.4G频段还是 5G频 段。
405、 WLAN的发现与选择设备根据终端所在的小区 ID对应的所有 AP 的属性信息, 对每一个 AP的可用性进行识别, 从终端所在的小区 ID对应的 所有 AP中获取具有可用性的第二 AP列表;
该第二 AP列表中包括至少一个具有可用性的、能够供终端接入的 AP标 识和每一个 AP的属性信息;
406、 WLAN发现与选择设备获取预设的分流策略消息;
例如分流策略消息具体可以为选择信号强度最好的 AP、选择负荷最小的 AP、 或者选择预设频段的 AP, 例如选择频段为 2.4G的 AP或者选择频段为 5G的 AP。
407、 WLAN发现与选择设备向终端发送携带分流策略消息和第二 AP列 表的通知消息;
408、 终端接收 WLAN的发现与选择设备发送的携带分流策略消息和第 二 AP列表的通知消息, 获取分流策略消息和第二 AP列表;
409、 终端扫描 WLAN, 获取第一 AP列表, 该第一 AP列表中包括至少 一个 AP标识;
例如当分流策略消息为选择预设频段的 AP 时, 此时对应地可以在步骤 404中的 AP属性信息中包含 AP所属频段,如果该 AP属性信息中未包含 AP 所属的频段时, 在该步骤 409 中, 终端扫描 WLAN时, 也可以扫描获取该 AP所属的频段。
410、 终端根据分流策略消息, 从第一 AP列表和第二 AP列表的交集中 选择目标 AP对应的 WLAN。
可选地, 本实施例中的步骤 400需要与步骤 401-408中任意一个之间可 以没有先后顺序限制。
综上所述, 本实施例中, 终端在向 WLAN发现与选择设备发送注册请求 的时候,可以将自身的位置信息跟随注册请求一并发送给 WLAN发现与选择 设备。这里要理解的是,这里的位置信息是一个广泛的概念,只要能让 WLAN 发现与选择设备识别出终端所在的位置即可。 其中一种实现方式是, 终端在 向 WLAN发现与选择设备时,将蜂窝网小区 ID号一并发送给 WLAN发现与 选择设备。
以上述实施例为例,假设终端在向 WLAN发现与选择设备发送注册请求 时, 将其所在的蜂窝网小区 ID (假如为 CELL1)发送给了 WLAN发现与选择 设备, WLAN发现与选择设备会在其自身预存的 CELL ID与 AP的对应关系 (如上述图 1所示实施例的可选实施例中的表 1 )进行查询, 找到属于蜂窝 网小区 ID为 CELL1下面的全部 AP, 例如 AP1、 AP2、 AP4、 AP5和 AP7共 5个 AP,这 5个 AP否成第二 AP列表, 当这 5个 AP又分别属于不同的 AC, 然后 WLAN发现与选择设备会根据上述图 1所示实施例的可选实施例中的表 1 , 获取这 5个 AP所属的 AC, 然后与这 5个 AP对应的 AC上去查询这 5 个 AP 的具体属性信息 (信噪比、 负荷以及吞吐量中的至少一个, 以及其他 一些如所属频段等信息), 并将查询到的这 5 个 AP 的属性信息标识在第二 AP列表中发送给终端, 以便终端从第二 AP列表中选择一个目标 AP接入。 或者还可以先对 5个 AP进行可用性识别,将识别后具有可用的 AP保留在第 二 AP列表中, 不具有可用性的 AP从第二 AP列表中删除。
终端在向 WLAN发现与选择设备发送注册请求的时候同时发送所属蜂 窝网小区 ID号, 是为了使只属于该蜂窝网周围的 AP (因此, 此时, 终端 发送的是哪个蜂窝网的 ID就表明终端就在哪个蜂窝网附近)发送给终端, 终端可以从这 5个 AP列表(第二 AP列表) 中选择一个目标 AP接入。
本实施例的 WLAN发现与选择方法, 通过采用上述技术方案, 能够在当 终端向蜂窝网发起分组交换数据时, 都进行上述 WLAN的发现与选择操作, 从而能够有效地提高 WiFi发现与选择的效率。
图 5为本发明又一实施例提供的 WLAN发现与选择方法的信令图。如图 5所示, 本实施例的 WLAN发现与选择方法, 具体可以包括如下步骤:
500、 当终端向蜂窝网 (如 BSC )发起分组交换数据时, 终端开启 WiFi 功能; 501、 终端扫描 WLAN, 获取第一 AP列表, 该第一 AP列表中包括至少 一个 AP标识;
502、 终端向 WLAN发现与选择设备发送携带第一 AP列表的注册请求;
503、 WLAN 的发现与选择设备接收终端发送的注册请求之后, 判断是 否需要采用 WLAN对蜂窝网中的该分组交换数据进行分流;
504、 当需要 WLAN对蜂窝网中的该分组交换数据进行分流时, WLAN 的发现与选择设备根据第一 AP列表, 与第一 AP列表中每一个 AP对应的 AC交互, 获取第一 AP列表中每一个 AP的属性信息;
具体交互过程可以为 WLAN的发现与选择设备向各 AC发送请求, 以请 求获取对应的 AP的属性信息, 并由 AC向 WLAN的发现与选择设备返回对 应的 AP的属性信息。
本实施例中是以 WLAN发现与选择设备与 AC交互获取第一 AP列表中 每一个 AP的属性信息。 实际应用中所有 AC也可以周期性地向 WLAN发现 与选择设备上报所有 AP 的属性信息, 或者 WLAN发现与选择设备预先从 AC中获取的,这样 WLAN发现与选择设备还可以从预存储的所有 AC的 AP 的属性信息中获取第一 AP列表中每一个 AP的属性信息。详细可以参考上述 实施例的记载, 在此不再赘述。
例如每一个 AP的属性信息包括该 AP的信噪比、 AP的负荷以及 AP的 吞吐量, 或者还可以包括 AP的频段, 例如该 AP属于 2.4G频段还是 5G频 段。
505、 WLAN的发现与选择设备根据第一 AP列表中的所有 AP的属性信 息,对每一个 AP的可用性进行识别, 从第一 AP列表中获取具有可用性的第 二 AP列表;
该第二 AP列表中包括至少一个具有可用性的、能够供终端接入的 AP标 识和每一个 AP的属性信息;
506、 WLAN发现与选择设备获取预设的分流策略消息;
例如分流策略消息具体可以为选择信号强度最好的 AP、选择负荷最小的 AP、 或者选择预设频段的 AP。
507、 WLAN发现与选择设备向终端发送携带分流策略消息和第二 AP列 表的通知消息; 508、 终端接收 WLAN的发现与选择设备发送的携带分流策略消息和第 二 AP列表的通知消息, 获取分流策略消息和第二 AP列表;
例如当分流策略消息为选择预设频段的 AP 时, 此时对应地可以在步骤 504中的 AP属性信息中包含 AP所属频段,如果该 AP属性信息中未包含 AP 所属的频段时, 可以在步骤 501中, 终端扫描 WLAN时, 也可以扫描获取该 AP所属的频段。
509、 终端根据分流策略消息, 从第二 AP 列表中选择目标 AP对应的 WLANo
综上所述, 本实施例中, 终端也可以先扫描周围的 WLAN, 获取到自身 能检测到的 AP, 这些 AP构成第一 AP列表, 然后将第一 AP列表携带在注 册请求中发送给 WLAN发现与选择设备。应该注意的是: 终端扫描周围的无 线网络,并且获得第一 AP列表,例如第一 AP列表中的共能扫描到 10个 AP, 但这 10个 AP可能属于不同的 AC , 例如属于 AC1-AC3。
本实施例的 WLAN发现与选择方法, 通过采用上述技术方案, 能够在当 终端向蜂窝网发起分组交换数据时, 都进行上述 WLAN的发现与选择操作, 从而能够有效地提高 WiFi发现与选择的效率。
图 6为本发明再一实施例提供的 WLAN发现与选择方法的信令图。如图 6所示, 本实施例的 WLAN发现与选择方法, 具体可以包括如下步骤:
600-606与上述图 5所示实施例的 500-506相同, 详细可以参考上述图 5 所示实施例的记载, 在此不再赘述。
607、 WLAN发现与选择设备根据预设的分流策略消息从第二 AP列表中 选择目标 AP;
608、 WLAN发现与选择设备向终端发送携带目标 AP标识的通知消息; 609、 终端接收 WLAN的发现与选择设备发送的携带目标 AP标识的通 知消息, 获取目标 AP , 选择目标 AP对应的 WLAN。 施例的技术方案中, 分流策略消息可以优先用于指示选择负荷最小的 AP、 或 者选择预设频段的 AP; 当然本实施例的技术方案中的分流策略消息也可以用 于指示选择信号强度最好的 AP, 由于信号强度的扫描是由终端扫描的, 所以 可以在终端扫描 WLAN得到的第一列表中携带各 AP的信号强度, 或者终端 在获取第一 AP列表时, 可以将各 AP按照信号强度来排列, 这样在从第一 AP列表中获取具有可用性的第二 AP列表时, 仍保持各 AP按照信号强度的 顺序排列, 仍然能够实施分流策略消息为选择信号强度最好的 AP 的实现。 对于分流策略消息用于指示选择预设频段的 AP, 如选择频段为 2.4G的 AP 或者选择频段为 5G的 AP, 其实现与上述图 5所示实施例的实现相同, 详细 可以参考上述图 5所示实施例的记载, 在此不再赘述。
本实施例的 WLAN发现与选择方法, 通过采用上述技术方案, 能够在当 终端向蜂窝网发起分组交换数据时, 都进行上述 WLAN的发现与选择操作, 从而能够有效地提高 WiFi发现与选择的效率。
图 7为本发明一实施例提供的终端的结构示意图, 如图 7所示, 本实施 例的终端, 具体可以包括发送模块 10、 接收模块 11和选择模块 12。
其中发送模块 10用于当向蜂窝网发起分组交换数据时, 向 WLAN发现 与选择设备发送注册请求; 接收模块 11用于接收 WLAN发现与选择设备发 送的通知消息, 该通知消息中携带接入参数信息; 选择模块 12 与接收模块 11连接,选择模块 12用于根据接收模块 11接收的接入参数信息选择目标 AP 对应的 WLAN。
本实施例的终端,通过采用上述模块实现 WLAN的发现与选择的实现机 制与上述相关方法实施例的实现相同, 详细可以参考上述相关方法实施例的 记载, 在此不再赘述。
本实施例的终端, 通过采用上述模块实现当向蜂窝网发起分组交换数据 时, 向 WLAN发现与选择设备发送注册请求; 接收 WLAN发现与选择设备 发送的通知消息, 通知消息中携带接入参数信息; 根据接入参数信息选择目 标无线接入点。 采用本实施例的技术方案, 当终端向蜂窝网发起分组交换数 据时, 都进行上述 WLAN的发现与选择操作, 从而能够有效地提高 WiFi发 现与选择的效率。
图 8为本发明另一实施例提供的终端的结构示意图。 如图 8所示, 本实 施例的终端在上述图 7所示实施例的基础上, 还可以包括如下技术方案。
如图 8所示, 本实施例的终端中, 还包括开启模块 13和获取模块 14。 其中接收模块 11具体用于接收 WLAN发现与选择设备发送的携带分流策略 消息的通知消息; 该分流策略消息用以指示选择信号强度最好的 AP、或者选 择预设频段的 AP。开启模块 13用于在选择模块 12根据接入参数信息选择目 标 AP对应的 WLAN之前, 开启 WiFi功能。 获取模块 14与开启模块 13连 接, 用于在开启模块 13开启 WiFi之后, 扫描 WLAN, 并获取第一 AP列表, 该第一 AP列表中包括至少一个 AP标识, 以及每一个 AP的信号强度或者每 一个 AP的频段。 对应地, 选择模块 12还与获取模块 14连接, 选择模块 12 具体用于根据接收模块 11接收的分流策略消息, 从获取模块 14获取的第一 AP列表中选择目标 AP对应的 WLAN。
或者可选地, 本实施例中的终端中的接收模块 11具体用于接收 WLAN 发现与选择设备发送的携带分流策略消息和能够接入的 WLAN的 AP的 SSID 的通知消息; 该分流策略消息用以指示选择信号强度最好的 AP、或者选择预 设频段的 AP; 开启模块 13用于在接收模块 11接收 WLAN发现与选择设备 发送的通知消息之后, 选择模块 12根据接入参数信息选择目标 AP对应的 WLAN之前, 开启 WiFi功能。 获取模块 14用于在开启模块 13开启 WiFi之 后, 扫描 WLAN, 并获取第一 AP列表, 该第一 AP列表中包括至少一个 AP 标识, 以及每一个 AP的信号强度或者每一个 AP的频段。 对应地, 选择模块 12具体用于根据接收模块 11接收的分流策略消息和 WLAN的 AP的 SSID以 及获取模块 14获取的第一 AP列表, 从第一 AP列表中选择目标 AP对应的 WLANo
或者可选地, 本实施例的终端中的发送模块 10具体用于向 WLAN发现 与选择设备发送携带有终端的位置信息的注册请求;接收模块 11具体用于接 收 WLAN发现与选择设备发送的携带分流策略消息和第二 AP列表的通知消 息; 该第二 AP列表为 WLAN发现与选择设备在接收到注册请求之后, 获取 终端的位置信息对应的所有 AP标识中的每一个 AP的属性信息,并根据终端 的位置信息对应的所有 AP标识中的每一个 AP的属性信息, 对每一个 AP的 可用性进行识别获取的; 第二 AP列表中包括至少一个能够供终端接入的 AP 标识和能够供终端接入的每一个 AP的属性信息; 该属性信息中包括信噪比、 负荷和吞吐量中的至少一个, 该分流策略消息用以指示选择信号强度最好的
AP、 选择负荷最小的 AP、 或者选择预设频段的;
此时对应的开启模块 13用于在接收模块 11接收 WLAN发现与选择设备 发送的通知消息之后, 选择模块 12根据接入参数信息选择目标 AP对应的 WLAN之前, 开启 WiFi功能; 获取模块 14用于扫描 WLAN, 获取第一 AP 列表, 第一 AP列表中包括至少一个 AP标识; 选择模块 12具体用于根据接 收模块 11接收的分流策略消息, 从获取模块 14获取的第一 AP列表和接收 模块 11接收的第二 AP列表的交集中选择目标 AP对应的 WLAN。
或者可选地, 本实施例的终端中的开启模块 13 用于在发送模块 10 向 WLAN发现与选择设备发送注册请求之前, 开启 WiFi功能; 获取模块 14用 于扫描 WLAN, 获取第一 AP列表, 该第一 AP列表中包括至少一个 AP标识 和至少一个 AP标识中每一个 AP的信号强度;发送模块 10具体用于向 WLAN 发现与选择设备发送携带第一 AP列表的注册请求。
进一步可选地, 接收模块 11具体用于接收 WLAN发现与选择设备发送 的携带分流策略消息和第二 AP列表的通知消息; 第二 AP列表为 WLAN发 现与选择设备从第一 AP列表中选取的;第二 AP列表中包括至少一个能够供 终端接入的 AP标识和能够供终端接入的每一个 AP的属性信息;该属性信息 中包括信噪比、 负荷和吞吐量中的至少一个, 分流策略消息用以指示选择信 号强度最好的 AP、 选择负荷最小的 AP、 或者选择预设频段的 AP; 选择模块 12 具体用于根据分流策略消息, 从第二 AP 列表中选择目标 AP 对应的 WLANo
或者进一步可选地接收模块 11具体用于接收 WLAN发现与选择设备发 送的携带目标 AP的标识的通知消息; 目标 AP的标识为 WLAN发现与选择 设备根据第一 AP列表与 AC进行交互,从第一 AP列表中选取第二 AP列表; 并根据分流策略消息从第二 AP列表中获取的;第二 AP列表中包括至少一个 能够供终端接入的 AP标识和能够供终端接入的每一个 AP的属性信息;该属 性信息中包括信噪比、 负荷和吞吐量中的至少一个, 分流策略消息用以指示 选择负荷最小的 AP、或者选择预设频段的 AP。选择模块 12具体用于获取通 知消息中的目标 AP的标识对应的 AP作为目标 AP。
可选地,本实施例的终端在上述技术方案的基础上,还包括关闭模块 15。 关闭模块 15可以与选择模块 12连接(图 8中未示出该种情况), 该关闭模块 15用于在选择模块 12根据接入参数信息选择目标 AP对应的 WLAN之后, 当在第一预设时间段内检测不到目标 AP, 则确定分流失败, 关闭 WiFi功能; 或者关闭模块 15用于在选择模块 12根据接入参数信息选择目标 AP之后, 当在第二预设时间段内未检测到分组交换数据的数据流量时, 关闭 WiFi 功
6匕
3匕。
或者可选地, 本实施例的终端在上述技术方案的基础上, 还包括关闭模 块 15、 检测模块 16和判断模块 17。 检测模块 16用于在选择模块 12根据接 入参数信息选择目标 AP对应的 WLAN之后,当能够通过目标 AP接入 WLAN 时, 检测在 WLAN中的速度; 判断模块 17与检测模块 16连接, 判断模块 17用于判断检测模块 16检测的速度是否小于预设速度阈值; 关闭模块 15与 判断模块 17连接, 关闭模块 15用于当判断模块 17判断检测模块 16检测的 速度小于预设速度阈值时, 确定 WLAN的易用性差, 关闭 WiFi功能。
本实施例的终端, 以包括上述所有可选技术方案为例详细介绍本发明的 技术方案, 实际引用中, 上述所有可选技术方按, 可以采用任意可结合的方 式结合构成本发明的可选实施例, 在此不再——赘述。
本实施例的终端,通过采用上述模块实现 WLAN的发现与选择的实现机 制与上述相关方法实施例的实现相同, 详细可以参考上述相关方法实施例的 记载, 在此不再赘述。
本实施例的终端, 通过采用上述技术方案, 当终端向蜂窝网发起分组交 换数据时,都进行上述 WLAN的发现与选择操作,从而能够有效地提高 WiFi 发现与选择的效率。
图 9为本发明实施例提供的 WLAN发现与选择设备的结构示意图。 如图 9所示, 本实施例的 WLAN发现与选择设备, 具体可以包括: 接收 模块 20、 获取模块 21和发送模块 22。
其中接收模块 20用于接收终端发送的注册请求,该注册请求为终端向蜂 窝网发起分组交换数据时发起的; 获取模块 21用于在接收模块 20接收注册 请求之后, 当需要采用 WLAN对蜂窝网中的该分组交换数据进行分流时, 获 取接入参数信息; 发送模块 22与获取模块 21连接, 发送模块 22用于向终端 发送携带获取模块 21获取的接入参数信息的通知消息,以供终端根据接入参 数信息选择目标 AP对应的 WLAN。
本实施例的 WLAN发现与选择设备, 通过采用上述模块实现 WLAN的 述相关方法实施例的记载, 在此不再赘述。 本实施例的 WLAN发现与选择设备,通过采用上述模块接收终端发送的 注册请求; 判断是否需要采用 WLAN 对蜂窝网中的该分组交换数据进行分 流; 当需要采用 WLAN对蜂窝网中的该分组交换数据进行分流时, WLAN 的发现与选择设备获取接入参数信息; 向终端发送携带接入参数信息的通知 消息, 以供终端根据接入参数信息选择目标 AP对应的 WLAN。 采用本实施 例的 WLAN的发现与选择方法, 当终端向蜂窝网发起分组交换数据时, 都 进行上述 WLAN的发现与选择操作, 从而能够有效地提高 WiFi发现与选择 的效率。
可选地, 在上述图 9所示实施例的基础上, 还可以包括如下技术方案。 图 9所示实施例的 WLAN发现与选择设备中还包括判断模块 23. , 该判 断模块 23与接收模块 20连接, 判断模块 23用于在接收模块 20接收到注册 请求之后,判断是否需要采用 WLAN对蜂窝网中该终端发起的该分组交换数 据业务中的该分组交换数据进行分流; 获取模块 21与判断模块 23连接, 获 取模块 21用于根据判断模块 23的判断结果, 当需要采用 WLAN对蜂窝网中 的该分组交换数据进行分流时, 获取接入参数信息.例如判断模块 23 具体用 于从蜂窝网网元或者核心网网元获取所述分组交换数据的业务类型; 根据业 务类型判断是否需要采用 WLAN对蜂窝网中的该分组交换数据进行分流。例 如, 当 WLAN的发现与选择设经备判断确定业务类型为 FTP下载类型时, WLAN的发现与选择设备确定需要采用 WLAN对蜂窝网中的该分组交换数 据进行分流; 当 WLAN的发现与选择设备经判断确定业务类型为 VoIP的语 音类型时, WLAN的发现与选择设备确定不需要采用 WLAN对蜂窝网中的 该分组交换数据进行分流; 当 WLAN的发现与选择设备经判断确定业务类型 为彩信业务类型时, WLAN的发现与选择设备确定需要采用 WLAN对蜂窝 网中的该分组交换数据进行分流; 当 WLAN的发现与选择设备经判断确定业 务类型为视频业务类型时, WLAN 的发现与选择设备确定需要采用 WLAN 对蜂窝网中的该分组交换数据进行分流; 当 WLAN的发现与选择设备经判断 确定业务类型为即时通信业务类型时, WLAN的发现与选择设备确定需要采 用 WLAN对蜂窝网中的该分组交换数据进行分流;
或者针对于上述的每一种需要采用 WLAN对蜂窝网中的该分组交换数 据进行分流的业务类型, WLAN的发现与选择设备中的判断模块 23还可以 再获取蜂窝网的负荷, 例如从 BSC或者其他网元获取蜂窝网的负荷; 并判断 蜂窝网的负荷是否大于等于预设负荷阈值, 当蜂窝网的负荷大于等于预设负 荷阈值时,确定需要采用 WLAN对蜂窝网中的该分组交换数据进行分流的业 务类型; 否则当蜂窝网的负荷小于预设负荷阈值时, 确定不需要采用 WLAN 对蜂窝网中的该分组交换数据进行分流的业务类型。
或者可选地, 图 9所示实施例的 WLAN发现与选择设备中的判断模块 23具体用于获取从归属位置寄存器中获取终端对应的用户的优先级; 判断终 端对应的用户的优先级是否大于等于预设优先级阈值; 当终端对应的用户优 先级大于等于预设优先级阈值时,确定不需要采用 WLAN对蜂窝网中的该分 组交换数据中的该分组交换数据进行分流; 否则当终端对应的用户优先级小 于预设优先级阈值时,确定需要采用 WLAN对蜂窝网中的该分组交换数据进 行分流。
进一步可选地, 在上述技术方案的基础上, 图 9所示实施例的 WLAN发 现与选择设备中的获取模块 21具体用于获取分流策略消息;该分流策略消息 用于指示选择信号强度最好的 AP、或者选择预设频段的 AP; 发送模块 22具 体用于向终端发送携带获取模块 21获取的分流策略消息的通知消息,以供终 端开启 WiFi功能, 并扫描 WLAN , 获取第一 AP列表, 第一 AP列表中包括 至少一个 AP标识, 以及每一个 AP的信号强度或者每一个 AP的频段, 并根 据分流策略消息, 从第一 AP列表中选择目标 AP对应的 WLAN。
或者进一步可选地,在上述技术方案的基础上,图 9所示实施例的 WLAN 发现与选择设备中的获取模块 21 具体用于获取分流策略消息和供终端接入 的 WLAN的 AP的 SSID; 分流策略消息用以指示选择信号强度最好的 AP、 或者选择预设频段的 AP; 发送模块 22具体用于向终端发送携带获取模块 21 获取的分流策略消息和能够接入的 WLAN的 AP的 SSID的通知消息, 以供 终端开启 WiFi功能, 并扫描 WLAN , 获取第一 AP列表, 第一 AP列表中包 括至少一个 AP标识和每一个 AP对应的 WLAN的 AP的 SSID, 以及每一个 AP 的信号强度或者每一个 AP 的频段; 并根据分流策略消息、 能够接入的 WLAN的 AP的 SSID和第一 AP列表, 从第一 AP列表中选择目标 AP对应 的 WLAN。
或者进一步可选地,在上述技术方案的基础上,图 9所示实施例的 WLAN 发现与选择设备中的接收模块 20 具体用于接收终端发送的携带有终端的位 置信息的注册请求; 获取模块 21还与接收模块 20连接, 获取模块 21具体用 于获取获取接收模块 20接收的注册请求中的终端的位置信息对应的每一 AP 的属性信息, 如获取模块 21具体可以用于获取接收模块 20接收的注册请求 中的终端的位置信息对应的所有 AP标识; 再获取终端的位置信息对应的所 有 AP标识中的每一个 AP的属性信息。 其中获取模块 21获取终端的位置信 息对应的所有 AP标识中的每一个 AP的属性信息,可以参考上述方法实施例 部分的两种方式, 第一种方式中获取模块 21从预存储的所有 AC中的 AP属 性信息(包括所有 AC中每一个 AC中的所有 AP的属性信息)中, 获取终端 的位置信息对应的所有 AP标识中每一个 AP的属性信息; 第二种方式中, 获 取模块 21可以根据终端的位置信息对应的所有 AP标识与每一个 AP标识对 应的 AC交互,获取终端的位置信息对应的所有 AP标识中的每一个 AP的属 性信息; 属性信息中包括信噪比、 负荷和吞吐量中的至少一个; 根据终端的 位置信息对应的所有 AP标识中每一个 AP对应的属性信息, 识别每一个 AP 的可用性并获取第二 AP列表,第二 AP列表包括至少一个能够供终端接入的 AP标识和能够供终端接入的每一个 AP的属性信息; 获取预设的分流策略信 息; 分流策略消息用以指示选择信号强度最好的 AP、 选择负荷最小的 AP、 或者选择预设频段的 AP; 发送模块 22具体用于向终端发送携带获取模块 21 获取的分流策略信息和第二 AP列表的通知消息, 以供终端开启 WiFi功能, 并扫描 WLAN , 获取第一 AP列表, 第一 AP列表中包括至少一个 AP标识; 并根据分流策略消息, 从第一 AP列表和第二 AP列表的交集中选择目标 AP 对应的 WLAN。
或者进一步可选地,在上述技术方案的基础上,图 9所示实施例的 WLAN 发现与选择设备中的接收模块 20具体用于接收终端发送的携带有第一 AP列 表的注册请求; 第一 AP列表为终端开启 WiFi功能, 并通过扫描 WLAN获 取的, 第一 AP列表中包括至少一个 AP标识; 获取模块 21具体用于获取每 一个 AP标识对应的属性信息;或者还可以从预存储的所有 AC中的 AP信息 中,获取终端的位置信息对应的所有 AP标识中每一个 AP的属性信息;同理, 获取模块 21获取每一个 AP标识对应的属性信息也可以采用上述方法部分的 两种方式,如可以从预先存储的所有 AC中的 AP的属性信息中获取,或者与 第一 AP列表中每一个 AP标识对应的 AC交互来获取,详细可以参考上述方 法实施例的记载, 在此不再赘述。 获取模块 21还根据第一 AP列表中每一个 AP标识对应的属性信息, 识别每一个 AP的可用性并从第一 AP列表中选取 第二 AP列表, 该第二 AP列表包括至少一个能够供终端接入的 AP标识和能 够供终端接入的每一个 AP 的属性信息; 属性信息中包括信噪比、 负荷和吞 吐量中的至少一个; 获取预设的分流策略信息; 分流策略消息用以指示选择 信号强度最好的 AP、 选择负荷最小的 AP、 或者选择预设频段的 AP, 其中选 择预设频段的 AP具体可以为选择频段为 2.4G的 AP或者选择频段为 5G的 AP; 发送模块 22具体用于向终端发送携带获取模块 21获取的分流策略信息 和第二 AP列表的通知消息, 以供终端根据分流策略消息,从第二 AP列表中 选择目标 AP对应的 WLAN。
或者进一步可选地,在上述技术方案的基础上,图 9所示实施例的 WLAN 发现与选择设备中的接收模块 20具体用于接收终端发送的携带有第一 AP列 表的注册请求; 第一 AP列表为终端开启 WiFi功能, 并通过扫描 WLAN获 取的, 第一 AP列表中包括至少一个 AP标识; 获取模块 21具体用于与第一 AP列表中每一个 AP标识对应的 AC交互, 获取每一个 AP标识对应的属性 信息;或者还可以从预存储的所有 AC中的 AP信息中(两种方式可以参考上 述方法实施例的记载), 获取第一 AP列表中每一个 AP的属性信息; 并根据 第一 AP列表中每一个 AP标识对应的属性信息, 识别每一个 AP的可用性并 从第一 AP列表中选取第二 AP列表; 第二 AP列表包括至少一个能够供终端 接入的 AP标识和能够供终端接入的每一个 AP的属性信息;属性信息中包括 信噪比、 负荷和吞吐量中的至少一个; 根据预设的分流策略信息从第二 AP 列表中获取的目标 AP的标识; 分流策略消息用以指示选择负荷最小的 AP、 或者选择预设频段的 AP; 发送模块 22具体用于向终端发送携带获取模块 21 获取的目标 AP的标识的通知消息。
上述实施例的 WLAN发现与选择设备,以包括上述所有可选技术方案为 例详细介绍本发明的技术方案, 实际引用中, 上述所有可选技术方按, 可以 采用任意可结合的方式结合构成本发明的可选实施例, 在此不再——赘述。
上述实施例的 WLAN发现与选择设备, 通过采用上述模块实现 WLAN 上述相关方法实施例的记载, 在此不再赘述。
上述实施例的 WLAN发现与选择设备, 通过采用上述技术方案, 当终端 向蜂窝网发起分组交换数据时, 都进行上述 WLAN的发现与选择操作, 从而 能够有效地提高 WiFi发现与选择的效率。
图 10为本发明一实施例提供的 WLAN的发现与选择系统的结构示意图。 如图 10所示,本实施例的 WLAN的发现与选择系统, 包括终端 30和 WLAN 的发现与选择设备 40。
其中终端 30, 用于当向蜂窝网发起分组交换数据时, 向 WLAN发现与 选择设备 40发送注册请求。
WLAN发现与选择设备 40, 用于接收终端 30发送的注册请求, 判断是 否需要采用 WLAN对蜂窝网中该终端发起的该分组交换数据业务中的该分 组交换数据进行分流; 当需要采用 WLAN对蜂窝网中的该分组交换数据进行 分流时, 获取接入参数信息; 向终端 30发送携带接入参数信息的通知消息。
终端 30 , 还用于接收 WLAN发现与选择设备 40发送的通知消息, 根据 接收模块 11接收的接入参数信息选择目标 AP对应的 WLAN。
具体地,本实施例的终端 30具体可以采用上述图 7或者图 8所示实施例 的终端, WLAN发现与选择设备 40 具体可以采用上述图 9所示实施例的 WLAN发现与选择设备。且进一步地可以采用上述图 1-图 6所示实施例的 WLAN发现与选择方法实现 WLAN发现与选择。
本实施例的 WLAN发现与选择系统, 通过采用上述终端和 WLAN的发 现与选择设备实现 WLAN 的发现与选择的实现机制与上述相关方法实施例 的实现相同, 详细可以参考上述相关方法实施例的记载, 在此不再赘述。
本实施例的 WLAN发现与选择系统, 通过采用上述技术方案, 当终端向 蜂窝网发起分组交换数据时, 终端和 WLAN 的发现与选择设备进行上述 WLAN的发现与选择操作, 从而能够有效地提高 WiFi发现与选择的效率。
结合上述实施例的技术方案, 本发明还可以具体包括以下方法实施例。 图 11为本发明再一实施例提供的 WLAN发现与选择方法的流程图。 如 图 11所示,本实施例的 WALN发现与选择方法的执行主体为 WLAN发现与 选择设备, 本实施例的 WLAN发现与选择方法, 具体可以包括如下步骤:
700、 WLAN发现与选择设备接收终端发送的注册请求; 本实施例中该注册请求为终端向蜂窝网发起分组交换数据时发起的; 该 注册请求中携带有终端的参数信息; 例如终端的参数信息包括终端的位置信 息如终端所在的小区 ID或者该终端的参数信息可以包括第一 AP列表, 该第 一 AP列表为终端扫描 WLAN得到的, 详细可以参考上述实施例的记载, 在 此不再赘述。
701、当需要采用 WLAN对蜂窝网中的分组交换数据进行分流时, WLAN 发现与选择设备根据注册请求中的终端的参数信息向 AC发送请求消息; 例如当注册请求中携带终端的位置信息时, 该步骤具体可以为: WLAN 发现与选择设备根据终端的位置信息与 AP之间的对应关系, 获取该终端的 位置信息对应的所有 AP,然后再按照 AP与 AC之间的对应关系,与所有 AP 中每一个 AP对应的 AC发送携带该 AP标识的请求消息, 以请求该 AP的属 性信息。 或者当注册请求中携带第一 AP列表时, WLAN发现与选择设备根 据 AP与 AC之间的对应关系, 向第一 AP列表中每一个 AP标识对应的 AC 发送携带该 AP标识的请求消息, 以请求该 AP的属性信息。
702、 WLAN发现与选择设备接收 AC返回的 AP的属性信息;
703、 WLAN发现与选择设备向终端发送携带接入参数信息的通知消息, 以供终端根据接入参数信息选择目标 AP对应的 WALN。
本实施例中该接入参数信息根据终端的参数信息对应的每一个 AP 的属 性信息与分流策略消息获取的。
例如当终端的参数信息对应的每一个 AP都是可用的, 该接入参数信息 至少可以包括如下两部分: 包括终端的参数信息对应的每一个 AP 的标识第 二 AP列表以及分流策略消息。
或者 WLAN发现与选择设备可以先对终端的参数信息对应的每一个 AP 进行可用性识别, 然后再将具有可用性的 AP构成第二 AP列表, 同理该接入 参数信息至少可以包括第二 AP列表以及分流策略消息。
例如当注册请求中携带终端的位置信息时, WLAN发现与选择设备将包 括第二 AP列表和分流策略消息的接入参数信息发送给终端之后, 终端还需 要扫描 WLAN得到第一 AP列表, 并根据分流策略消息从第一 AP列表和第 二 AP列表的交集中选择目标 AP的 WLAN。当注册请求中携带第一 AP列表 时, 此时的第二 AP列表即为第一 AP列表的子集, WALN发现与选择设备 将包括第二 AP 列表和分流策略消息的接入参数信息发送给终端之后, 终端 根据分流策略消息从第二 AP列表中选择目标 AP的 WLAN。 或者当注册请 求中携带第一 AP列表时, 此时 WALN发现与选择设备还可以根据分流策略 消息从第二 AP列表中选择目标 AP, 并向终端发送包括目标 AP标识的接入 参数信息, 以供终端选择目标 AP对应的 WLAN。 详细可以参考上述图 1-图 10相关实施例的记载在此不再赘述。
本实施例的 WLAN发现与选择方法, 通过采用上述技术方案, 能够在当 终端向蜂窝网发起分组交换数据时, 都进行上述 WLAN的发现与选择操作, 从而能够有效地提高 WiFi发现与选择的效率。
图 12为本发明再一实施例提供的 WLAN发现与选择方法的流程图。 如 图 12所示,本实施例的 WALN发现与选择方法的执行主体为 AC,本实施例 的 WLAN发现与选择方法, 具体可以包括如下步骤:
800、 AC接收 WALN发现与选择设备发送的请求消息; 该请求消息中携 带由 AP标识;
具体地,该步骤 800为 WLAN发选与选择设备收到终端的注册请求之后 发起的。 本实施例中, 当注册请求中携带终端的位置信息时, 该 AP标识为 WLAN发现与选择设备接收到终端发送的注册请求之后, 根据注册请求中的 终端的位置信息获取的该终端的位置信息对应的 AP 的标识。 或者当注册请 求中携带终端的扫描 WLAN获取的第一 AP列表时, 该 AP标识为第一 AP 息与 AP的对应关系, 以及 AP与 AC的对应关系。 当 WLAN发现与选择设 备获取到 AP标识时, 可以根据 AP与 AC的对应关系向对应的 AC发送请求 消息, 以请求该 AP的属性信息。本实施例中以一个 AC为执行主体来详细介 绍本发明的技术方案。 实际应用中, 对于每一个 AC均可以采用本实施例的 技术方案来实现。
801、 AC根据 AP标识获取该 AP标识对应的 AP的属性信息;
802、 AC向 WLAN发现与选择设备发送该 AP的属性信息。
具体地, 参考上述相关实施例的记载, 本实施例中, AC向 WLAN发现 与选择设备发送该 AP的属性信息, 可以供 WLAN发现与选择设备根据 AP 的属性信息对 AP的可用性进行识别, 以将具有可用性的 AP组成第二 AP列 表; 并向终端发送包括第二 AP 列表和分流策略消息的接入参数信息, 以供 终端根据接入参数信息选择目标 AP对应的 WLAN。
本实施例的 WLAN的发现与选择方法与上述图 11所示实施例的区别仅 在于: 本实施例在 AC择设备终端侧描述本发明的技术方案, 详细可以参考 上述图 11所示实施例的记载,亦可以参考上述图 1-图 10相关实施例的记载, 在此不再赘述。
本实施例的 WLAN发现与选择方法, 通过采用上述技术方案, 能够在当 终端向蜂窝网发起分组交换数据时, 都进行上述 WLAN的发现与选择操作, 从而能够有效地提高 WiFi发现与选择的效率。
图 13为本发明再一实施例提供的 WLAN发现与选择设备的结构示意图。 如图 13所示, 本实施例的 WALN发现与选择设备, 具体可以包括: 接收模 块 50和发送模块 51、
接收模块 50用于接收终端发送的注册请求;该注册请求为终端向蜂窝网 发起分组交换数据时发起的; 该注册请求中携带有终端的参数信息; 例如终 端的参数信息包括终端的位置信息如终端所在的小区 ID或者该终端的参数 信息可以包括第一 AP列表, 该第一 AP列表为终端扫描 WLAN得到的。 发 送模块 51与接收模块 50连接, 发送模块 51用于当需要采用 WLAN对蜂窝 网中的分组交换数据进行分流时,根据接收模块 50接收的注册请求中的终端 的参数信息向 AC发送请求消息; 接收模块 50还用于接收 AC返回的 AP的 属性信息。发送模块 51用于向终端发送携带接入参数信息的通知消息, 以供 终端根据接入参数信息选择目标 AP对应的 WALN, 该接入参数信息根据终 端的参数信息对应的每一个 AP的属性信息与分流策略消息获取的。
本实施例的 WLAN发现与选择设备, 通过采用上述模块实现 WLAN的 述相关方法实施例的记载, 在此不再赘述。
本实施例的 WLAN发现与选择设备, 通过采用上述技术方案, 当终端向 蜂窝网发起分组交换数据时, 终端和 WLAN 的发现与选择设备进行上述 WLAN的发现与选择操作, 从而能够有效地提高 WiFi发现与选择的效率。
图 14为本发明实施例提供的 AC的结构示意图。 如图 14所示, 本实施 例的 AC, 具体可以包括: 接收模块 60、 获取模块 61和发送模块 62。
接收模块 60用于接收 WALN发现与选择设备发送的请求消息; 该请求 消息中携带由 AP标识; 获取模块 61与接收模块 60连接, 获取模块 61用于 根据接收模块 60接收的 AP标识获取对应的 AP的属性信息;发送模块 62与 获取模块 61连接,发送模块 62用于向 WLAN发现与选择设备发送获取模块 61获取的该 AP的属性信息。
本实施例的 AC, 通过采用上述模块实现 WLAN的发现与选择的实现机 制与上述相关方法实施例的实现相同, 详细可以参考上述相关方法实施例的 记载, 在此不再赘述。
本实施例的 AC,通过采用上述技术方案, 当终端向蜂窝网发起分组交换 数据时, 终端和 WLAN的发现与选择设备进行上述 WLAN的发现与选择操 作, 从而能够有效地提高 WiFi发现与选择的效率。
图 15为本发明另一实施例提供的 WLAN的发现与选择系统的结构示意 图。如图 15所示,本实施例的 WLAN的发现与选择系统,包括终端 70、 WLAN 的发现与选择设备 80和 AC90。 WLAN的发现与选择设备 80分别与终端 70 和 AC90连接。
例如终端 70用于向 WLAN的发现与选择设备 80发送注册请求;该注册 请求为终端向蜂窝网发起分组交换数据时发起的; 该注册请求中携带有终端 的参数信息; 例如终端的参数信息包括终端的位置信息如终端所在的小区 ID 或者该终端的参数信息可以包括第一 AP列表, 该第一 AP列表为终端扫描 WLAN得到的。
WALN发现与选择设备 80接收终端 70发送的注册请求; 当需要采用 WLAN对蜂窝网中的分组交换数据进行分流时, 根据接收的注册请求中的终 端的参数信息向 AC90发送请求消息;
AC90用于接收 WALN发现与选择设备 80发送的请求消息,根据接收的 AP标识获取对应的 AP的属性信息; 并向 WLAN发现与选择设备 80发送获 取的该 AP的属性信息。
WALN发现与选择设备 80还用于向终端 70发送携带接入参数信息的通 知消息。
终端 70还用于接收 WALN发现与选择设备 80发送的携带接入参数信息 的通知消息, 根个据接入参数信息选择目标 AP对应的 WALN, 该接入参数 信息根据终端的参数信息对应的每一个 AP 的属性信息与分流策略消息获取 的。
具体地,本实施例的 WLAN发现与选择设备 80可以采用上述图 13所示 的 WLAN发现与选择设备, AC90可以采用上述图 14所示的 AC, 并详细可 以采用上述图 11或者图 12所示的 WLAN发现与选择方法实现 WLAN发现 与选择, 详细可以参考上述实施例的记载, 在此不再赘述。 进一步地, 本实 施例中的终端 70、 WLAN的发现与选择设备 80和 AC90实现 WLAN的发现 与选择的实现机制详细还可以参考上述图 1-图 10所示实施例的记载,详细在 此不再赘述。
本实施例的 WLAN发现与选择系统, 通过采用上述终端、 WLAN的发 现与选择设备与 AC实现 WLAN的发现与选择的实现机制与上述相关方法实 施例的实现相同, 详细可以参考上述相关方法实施例的记载, 在此不再赘述。
本实施例的 WLAN发现与选择系统, 通过采用上述技术方案, 当终端向 蜂窝网发起分组交换数据时, 终端、 WLAN的发现与选择设备与 AC进行上 述 WLAN的发现与选择操作,从而能够有效地提高 WiFi发现与选择的效率。
上述图 11-图 15所示实施例的技术方案为上述图 1-图 10的技术方案中涉 及到 WLAN发现与选择设备与 AC交互的技术方案, 因此图 1-图 10中涉及 到的 AC的技术方案均适用于上述图 11-图 15所示实施例, 在此不再详细地 一一赞述。
本领域普通技术人员可以意识到, 结合本文中所公开的实施例描述的各 示例的单元及算法步骤, 能够以电子硬件、 或者计算机软件和电子硬件的结 合来实现。 这些功能究竟以硬件还是软件方式来执行, 取决于技术方案的特 定应用和设计约束条件。 专业技术人员可以对每个特定的应用来使用不同方 法来实现所描述的功能, 但是这种实现不应认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到, 为描述的方便和筒洁, 上述描 述的系统、 装置和单元的具体工作过程, 可以参考前述方法实施例中的对应 过程, 在此不再赘述。
在本申请所提供的几个实施例中, 应该理解到, 所揭露的系统、 装置和 方法, 可以通过其它的方式实现。 例如, 以上所描述的装置实施例仅仅是示 意性的, 例如, 所述单元的划分, 仅仅为一种逻辑功能划分, 实际实现时可 以有另外的划分方式, 例如多个单元或组件可以结合或者可以集成到另一个 系统, 或一些特征可以忽略, 或不执行。 另一点, 所显示或讨论的相互之间 的耦合或直接耦合或通信连接可以是通过一些接口, 装置或单元的间接耦合 或通信连接, 可以是电性, 机械或其它的形式。 为单元显示的部件可以是或者也可以不是物理单元, 即可以位于一个地方, 或者也可以分布到多个网络单元上。 可以根据实际的需要选择其中的部分或 者全部单元来实现本实施例方案的目的。
另外 ,在本发明各个实施例中的各功能单元可以集成在一个处理单元中 , 也可以是各个单元单独物理存在, 也可以两个或两个以上单元集成在一个单 元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用 时, 可以存储在一个计算机可读取存储介质中。 基于这样的理解, 本发明的 技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可 以以软件产品的形式体现出来, 该计算机软件产品存储在一个存储介质中, 包括若干指令用以使得一台计算机设备(可以是个人计算机, 服务器, 或者 网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。 而前述的 存储介质包括: U盘、 移动硬盘、 只读存储器(ROM, Read-Only Memory ) 、 随机存取存储器(RAM, Random Access Memory ) 、 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: 以上各实施例仅用以说明本发明的技术方案, 而非对 其限制; 尽管参照前述各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, 或者对其中部分或者全部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范围。

Claims

权 利 要 求 书
1、 一种无线局域网络的发现与选择方法, 其特征在于, 包括:
当向蜂窝网发起分组交换数据时, 向无线局域网络发现与选择设备发送 注册请求;
接收所述无线局域网络发现与选择设备发送的通知消息, 所述通知消息 中携带接入参数信息;
根据所述接入参数信息选择目标无线接入点对应的无线局域网络。
2、 根据权利要求 1所述的方法, 其特征在于, 所述接入参数信息包括分 流策略消息; 所述分流策略消息用以指示选择信号强度最好的无线接入点或 者选择预设频段的无线接入点;
根据所述接入参数信息选择目标无线接入点对应的无线局域网之前, 还 包括:
扫描无线局域网络, 获取第一无线接入点列表, 所述第一无线接入点列 表中包括至少一个无线接入点标识, 以及所述第一无线接入点列表中每一个 无线接入点的信号强度和 /或每一个无线接入点的频段;
根据所述接入参数信息选择目标无线接入点对应的无线局域网, 包括: 根据所述分流策略消息, 从所述第一无线接入点列表中选择所述目标无 线接入点对应的无线局域网络。
3、 根据权利要求 2所述的方法, 其特征在于, 所述接入参数信息还包括 能够接入的无线局域网络的无线接入点的服务集标识; 所述第一无线接入点 列表中还包括至少一个无线接入点标识中每一个无线接入点的服务集标识; 根据所述接入参数信息选择目标无线接入点对应的无线局域网络, 包括: 根据所述分流策略消息、 所述无线局域网络的无线接入点的服务集标识 和所述第一无线接入点列表, 从所述第一无线接入点列表中选择所述目标无 线接入点对应的无线局域网络。
4、 根据权利要求 1所述的方法, 其特征在于, 所述注册请求中携带有终 端的位置信息;
所述接入参数信息包括分流策略消息和第二无线接入点列表, 所述第二 无线接入点列表为所述无线局域网络发现与选择设备在接收到所述注册请求 之后, 获取的所述终端的位置信息对应的所有无线接入点标识中的每一个无 线接入点的属性信息, 并根据所述终端的位置信息对应的所有无线接入点标 识中的每一个无线接入点的属性信息, 对每一个无线接入点的可用性进行识 别获取的, 所述第二无线接入点列表中包括至少一个能够供所述终端接入的 无线接入点标识和能够供所述终端接入的每一个无线接入点的属性信息; 所 述属性信息中包括信噪比、 负荷和吞吐量中的至少一个, 所述分流策略消息 用以指示选择信号强度最好的无线接入点、 选择负荷最小的无线接入点、 或 者选择预设频段的无线接入点;
接收所述无线局域网络发现与选择设备发送的通知消息之后, 根据所述 接入参数信息选择目标无线接入点之前, 还包括:
扫描无线局域网络, 获取第一无线接入点列表, 所述第一无线接入点列 表中包括至少一个无线接入点标识和所述至少一个无线接入点标识中每一个 无线接入点的信号强度;
根据所述接入参数信息选择目标无线接入点对应的无线局域网络, 包括: 根据所述分流策略消息, 从所述第一无线接入点列表和所述第二无线接 入点列表的交集中选择所述目标无线接入点对应的无线局域网络。
5、 根据权利要求 1所述的方法, 其特征在于, 所述向无线局域网络发现 与选择设备发送注册请求之前, 还包括:
扫描无线局域网络, 获取第一无线接入点列表, 所述第一无线接入点列 表中包括至少一个无线接入点标识和所述至少一个无线接入点标识中每一个 无线接入点的信号强度;
向无线局域网络发现与选择设备发送注册请求, 包括:
向所述无线局域网络发现与选择设备发送携带所述第一无线接入点列表 的所述注册请求。
6、 根据权利要求 5所述的方法, 其特征在于, 所述接入参数信息包括分 流策略消息和第二无线接入点列表, 所述第二无线接入点列表为所述无线局 域网络发现与选择设备从所述第一无线接入点列表中选取的; 所述第二无线 接入点列表中包括至少一个能够供所述终端接入的无线接入点标识和能够供 所述终端接入的每一个无线接入点的属性信息;所述属性信息中包括信噪比、 负荷和吞吐量中的至少一个, 所述分流策略消息用以指示选择信号强度最好 的无线接入点、 选择负荷最小的无线接入点、 或者选择预设频段的无线接入 点;
根据所述接入参数信息选择目标无线接入点, 包括:
根据所述分流策略消息, 从所述第二无线接入点列表中选择所述目标无 线接入点。
7、 根据权利要求 5所述的方法, 其特征在于, 所述接入参数信息包括所 述目标无线接入点的标识, 所述目标无线接入点的标识为所述无线局域网络 发现与选择设备从所述第一无线接入点列表中选取所述第二无线接入点列 表; 并根据分流策略消息从所述第二无线接入点列表中获取的; 所述第二无 线接入点列表中包括至少一个能够供所述终端接入的无线接入点标识和能够 供所述终端接入的每一个无线接入点的属性信息; 所述属性信息中包括信噪 比、 负荷和吞吐量中的至少一个, 所述分流策略消息用于指示选择负荷最小 的无线接入点、 或者选择预设频段的无线接入点。
8、 根据权利要求 2-7任一所述的方法, 其特征在于, 根据所述接入参数 信息选择目标无线接入点之后, 所述方法还包括:
当在第一预设时间段内检测不到所述目标无线接入点,则确定分流失败, 关闭所述无线保真功能;
或者所述方法还包括:
当在第二预设时间段内未检测到所述分组交换数据的数据流量时, 关闭 所述无线保真功能;
或者所述方法还包括:
当能够通过所述目标无线接入点接入无线局域网络时, 检测在所述无线 局域网络中的速度;
判断所述速度是否小于预设速度阈值;
当所述速度小于所述预设速度阈值时, 确定所述无线局域网络的易用性 差, 关闭所述无线保真功能。
9、 一种无线局域网络的发现与选择方法, 其特征在于, 包括:
接收终端发送的注册请求, 所述注册请求为终端向蜂窝网发起分组交换 数据时发起的;
当需要采用无线局域网络对所述蜂窝网中的所述分组交换数据进行分流 向所述终端发送携带所述接入参数信息的通知消息, 以供所述终端根据 所述接入参数信息选择目标无线接入点对应的无线局域网络。
10、 根据权利要求 9所述的方法, 其特征在于, 所述接收终端发送的注 册请求之后, 所述当需要采用所述无线局域网络对所述蜂窝网中的所述分组 交换数据进行分流时, 获取接入参数信息之前, 所述方法还包括:
判断是否需要采用所述无线局域网络对所述蜂窝网中的所述分组交换数 据进行分流。
11、 根据权利要求 10所述的方法, 其特征在于, 所述判断是否需要采用 所述无线局域网络对所述蜂窝网中的所述分组交换数据进行分流, 包括: 从蜂窝网网元或者核心网网元获取所述分组交换数据的业务类型; 根据所述业务类型判断是否需要采用所述无线局域网络对所述蜂窝网中 的所述分组交换数据进行分流。
12、 根据权利要求 10所述的方法, 其特征在于, 判断是否需要采用所述 无线局域网络对所述蜂窝网中的所述分组交换数据进行分流, 包括:
从归属位置寄存器中获取所述终端对应的用户的优先级;
判断所述终端对应的用户的优先级是否大于等于预设优先级阈值; 当所述终端对应的用户优先级大于等于所述预设优先级阈值时, 确定不 需要采用所述无线局域网络对所述蜂窝网中的所述分组交换数据进行分流; 否则当所述终端对应的用户优先级小于预设优先级阈值时, 确定需要采用所 述无线局域网络对所述蜂窝网中的所述分组交换数据进行分流。
13、 根据权利要求 9-12任一所述的方法, 其特征在于, 所述获取接入参 数信息, 包括: 获取分流策略消息; 所述分流策略消息用于指示选择信号强 度最好的无线接入点、 或者选择预设频段的无线接入点;
向所述终端发送携带所述接入参数信息的通知消息, 包括:
向所述终端发送携带所述分流策略消息的通知消息, 以供所述终端扫描 无线局域网络, 获取第一无线接入点列表, 所述第一无线接入点列表中包括 至少一个无线接入点标识, 以及每一个无线接入点的信号强度或者每一个无 线接入点的频段, 并根据所述分流策略消息, 从所述第一无线接入点列表中 选择所述目标无线接入点对应的无线局域网络。
14、 根据权利要求 9-12任一所述的方法, 其特征在于, 所述获取接入参 数信息, 包括: 获取分流策略消息和供所述终端接入的无线局域网络的无线 接入点的服务集标识; 所述分流策略消息用于指示选择信号强度最好的无线 接入点、 或者选择预设频段的无线接入点;
向所述终端发送携带所述接入参数信息的通知消息, 包括:
向所述终端发送携带所述分流策略消息和所述无线局域网络的无线接入 点的服务集标识的通知消息, 以供所述终端扫描无线局域网络, 获取第一无 线接入点列表, 所述第一无线接入点列表中包括至少一个无线接入点标识和 每一个无线接入点对应的无线局域网络的无线接入点的服务集标识, 以及每 一个无线接入点的信号强度和 /或每一个无线接入点的频段; 并根据所述分流 策略消息、 所述无线局域网络的无线接入点的服务集标识和所述第一无线接 入点列表, 从所述第一无线接入点列表中选择所述目标无线接入点对应的无 线局域网络。
15、 根据权利要求 9-12任一所述的方法, 其特征在于, 所述注册请求中 携带有所述终端的位置信息;
所述获取接入参数信息, 包括:
获取所述终端的位置信息对应的所有无线接入点标识;
获取所述终端的位置信息对应的所有无线接入点标识中每一个无线接入 点的属性信息; 所述属性信息中包括信噪比、 负荷和吞吐量中的至少一个; 根据所述终端的位置信息对应的所有无线接入点标识中每一个无线接入 点对应的属性信息, 识别每一个无线接入点的可用性并获取第二无线接入点 列表, 所述第二无线接入点列表包括至少一个能够供所述终端接入的无线接 入点标识和能够供所述终端接入的每一个无线接入点的属性信息; 获取预设 的分流策略信息; 所述分流策略消息用以指示选择信号强度最好的无线接入 点、 选择负荷最小的无线接入点、 或者选择预设频段的无线接入点;
向所述终端发送携带所述接入参数信息的通知消息, 包括:
向所述终端发送携带所述分流策略信息和所述第二无线接入点列表的通 知消息, 以供所述终端扫描无线局域网络, 获取第一无线接入点列表, 所述 第一无线接入点列表中包括至少一个无线接入点标识; 并根据所述分流策略 消息, 从所述第一无线接入点列表和所述第二无线接入点列表的交集中选择 所述目标无线接入点对应的无线局域网络。
16、 根据权利要求 15所述的方法, 其特征在于, 所述获取所述终端的位 置信息对应的所有无线接入点标识中每一个无线接入点的属性信息, 包括: 从预存储的所有接入控制器中的无线接入点属性信息中, 获取所述终端 的位置信息对应的所有无线接入点标识中每一个无线接入点的属性信息; 或者根据所述终端的位置信息对应的所有无线接入点标识与每一个无线 接入点标识对应的接入控制器交互, 获取所述终端的位置信息对应的所有无 线接入点标识中每一个无线接入点的属性信息。
17、 根据权利要求 9-12任一所述的方法, 其特征在于, 所述注册请求中 携带有第一无线接入点列表, 所述第一无线接入点列表为所述终端通过扫描 无线局域网络获取的, 所述第一无线接入点列表中包括至少一个无线接入点 标识;
所述获取接入参数信息, 包括:
获取每一个无线接入点标识对应的属性信息; 所述属性信息中包括信噪 比、 负荷和吞吐量中的至少一个;
根据所述第一无线接入点列表中每一个无线接入点标识对应的属性信 息, 识别每一个无线接入点的可用性并从所述第一无线接入点列表中选取第 二无线接入点列表, 所述第二无线接入点列表包括至少一个能够供所述终端 接入的无线接入点标识和能够供所述终端接入的每一个无线接入点的属性信 息;
获取预设的分流策略信息; 所述分流策略消息用以指示选择信号强度最 好的无线接入点、 选择负荷最小的无线接入点、 或者选择预设频段的无线接 入点;
向所述终端发送携带所述接入参数信息的通知消息, 包括:
向所述终端发送携带所述分流策略信息和所述第二无线接入点列表的通 知消息, 以供所述终端根据所述分流策略消息, 从所述第二无线接入点列表 中选择所述目标无线接入点对应的无线局域网络。
18、 根据权利要求 9-12任一所述的方法, 其特征在于, 所述注册请求中 携带有第一无线接入点列表, 所述第一无线接入点列表为所述终端通过扫描 无线局域网络获取的, 所述第一无线接入点列表中包括至少一个无线接入点 标识; 所述获取接入参数信息, 包括:
获取每一个无线接入点标识对应的属性信息; 所述属性信息中包括信噪 比、 负荷和吞吐量中的至少一个;
根据所述第一无线接入点列表中每一个无线接入点标识对应的属性信 息, 识别每一个无线接入点的可用性并从所述第一无线接入点列表中选取第 二无线接入点列表; 所述第二无线接入点列表包括至少一个能够供所述终端 接入的无线接入点标识和能够供所述终端接入的每一个无线接入点的属性信 息;
根据预设的分流策略信息从所述第二无线接入点列表中获取的所述目标 无线接入点的标识;所述分流策略消息用以指示选择负荷最小的无线接入点、 或者选择预设频段的无线接入点;
向所述终端发送携带所述接入参数信息的通知消息, 包括:
向所述终端发送携带所述目标无线接入点的标识的通知消息。
19、 一种终端, 其特征在于, 包括:
发送模块, 用于当向蜂窝网发起分组交换数据时, 向无线局域网络发现 与选择设备发送注册请求;
接收模块,用于接收所述无线局域网络发现与选择设备发送的通知消息, 所述通知消息中携带接入参数信息;
选择模块, 用于根据所述接入参数信息选择目标无线接入点对应的无线 局域网络。
20、 根据权利要求 19所述的终端, 其特征在于, 所述终端还包括获取模 块;
所述接收模块, 具体用于接收所述无线局域网络发现与选择设备发送的 携带分流策略消息的通知消息; 所述分流策略消息用以指示选择信号强度最 好的无线接入点、 或者选择预设频段的无线接入点;
所述获取模块, 用于扫描无线局域网络, 获取第一无线接入点列表, 所 述第一无线接入点列表中包括至少一个无线接入点标识, 以及所述第一无线 接入点列表中每一个无线接入点的信号强度和 /或每一个无线接入点的频段; 所述选择模块, 具体用于根据所述分流策略消息, 从所述第一无线接入 点列表中选择所述目标无线接入点对应的无线局域网络。
21、 根据权利要求 19所述的终端, 其特征在于, 所述终端还包括获取模 块;
所述接收模块, 具体用于接收所述无线局域网络发现与选择设备发送的 携带分流策略消息和能够接入的无线局域网络的无线接入点的服务集标识的 通知消息; 所述分流策略消息用以指示选择信号强度最好的无线接入点、 或 者选择预设频段的无线接入点;
所述获取模块, 用于扫描无线局域网络, 获取第一无线接入点列表, 所 述第一无线接入点列表中包括至少一个无线接入点标识和所述至少一个无线 接入点标识中每一个无线接入点对应的无线局域网络的无线接入点的服务集 标识, 以及每一个无线接入点的信号强度或者每一个无线接入点的频段; 所述选择模块, 具体用于根据所述分流策略消息、 所述无线局域网络的 无线接入点的服务集标识和所述第一无线接入点列表, 从所述第一无线接入 点列表中选择所述目标无线接入点对应的无线局域网络。
22、 根据权利要求 19 所述的终端, 其特征在于:
所述发送模块, 具体用于向无线局域网络发现与选择设备发送携带有终 端的位置信息的注册请求;
所述接收模块, 具体用于接收所述无线局域网络发现与选择设备发送的 携带分流策略消息和第二无线接入点列表的通知消息; 所述第二无线接入点 列表为所述无线局域网络发现与选择设备在接收到所述注册请求之后, 获取 的所述终端的位置信息对应的所有无线接入点标识中的每一个无线接入点的 属性信息, 并根据所述终端的位置信息对应的所有无线接入点标识中的每一 个无线接入点的属性信息, 对每一个无线接入点的可用性进行识别获取的; 所述第二无线接入点列表中包括至少一个能够供所述终端接入的无线接入点 标识和能够供所述终端接入的每一个无线接入点的属性信息; 所述属性信息 中包括信噪比、 负荷和吞吐量中的至少一个, 所述分流策略消息用以指示选 择信号强度最好的无线接入点、 选择负荷最小的无线接入点、 或者选择预设 频段的无线接入点;
所述终端还包括获取模块:
所述获取模块, 用于扫描无线局域网络, 获取第一无线接入点列表, 所 述第一无线接入点列表中包括至少一个无线接入点标识; 所述选择模块, 具体用于根据所述分流策略消息, 从所述第一无线接入 点列表和所述第二无线接入点列表的交集中选择所述目标无线接入点对应的 无线局域网络。
23、 根据权利要求 19所述的终端, 其特征在于, 所述终端还包括获取模 块;
所述获取模块, 用于扫描无线局域网络, 获取第一无线接入点列表, 所 述第一无线接入点列表中包括至少一个无线接入点标识和所述至少一个无线 接入点标识中每一个无线接入点的信号强度;
所述发送模块, 具体用于向所述无线局域网络发现与选择设备发送携带 所述第一无线接入点列表的所述注册请求。
24、 根据权利要求 23所述的终端, 其特征在于:
所述接收模块, 具体用于接收所述无线局域网络发现与选择设备发送的 携带分流策略消息和第二无线接入点列表的通知消息; 所述第二无线接入点 列表为所述无线局域网络发现与选择设备从所述第一无线接入点列表中选取 的; 所述第二无线接入点列表中包括至少一个能够供所述终端接入的无线接 入点标识和能够供所述终端接入的每一个无线接入点的属性信息; 所述属性 信息中包括信噪比、 负荷和吞吐量中的至少一个, 所述分流策略消息用以指 示选择信号强度最好的无线接入点、 选择负荷最小的无线接入点、 或者选择 预设频段的无线接入点;
所述选择模块, 具体用于根据所述分流策略消息, 从所述第二无线接入 点列表中选择所述目标无线接入点对应的无线局域网络。
25、 根据权利要求 23所述的终端, 其特征在于:
所述接收模块, 具体用于接收所述无线局域网络发现与选择设备发送的 携带所述目标无线接入点的标识的通知消息; 所述目标无线接入点的标识为 所述无线局域网络发现与选择设备从所述第一无线接入点列表中选取所述第 二无线接入点列表; 并根据分流策略消息从所述第二无线接入点列表中获取 的; 所述第二无线接入点列表中包括至少一个能够供所述终端接入的无线接 入点标识和能够供所述终端接入的每一个无线接入点的属性信息; 所述属性 信息中包括信噪比、 负荷和吞吐量中的至少一个, 所述分流策略消息用以指 示选择负荷最小的无线接入点、 或者选择预设频段的无线接入点。
26、 根据权利要求 20-25任一所述的终端, 其特征在于, 所述终端还包 括关闭模块;
所述关闭模块, 用于在所述选择模块根据所述接入参数信息选择目标无 线接入点之后, 当在第一预设时间段内检测不到所述目标无线接入点, 则确 定分流失败, 关闭所述无线保真功能; 或者
所述关闭模块, 用于在所述选择模块根据所述接入参数信息选择目标无 线接入点之后, 当在第二预设时间段内未检测到所述分组交换数据的数据流 量时, 关闭所述无线保真功能;
27、 根据权利要求 20-25任一所述的终端, 其特征在于, 所述终端还包 括:
检测模块, 用于在所述选择模块根据所述接入参数信息选择目标无线接 入点之后, 当能够通过所述目标无线接入点接入无线局域网络时, 检测在所 述无线局域网络中的速度;
判断模块, 用于判断所述速度是否小于预设速度阈值;
关闭模块, 用于当所述速度小于所述预设速度阈值时, 确定所述无线局 域网络的易用性差, 关闭所述无线保真功能。
28、 一种无线局域网络发现与选择设备, 其特征在于, 包括: 接收模块, 用于接收终端发送的注册请求, 所述注册请求为终端向蜂窝 网发起分组交换数据时发起的;
获取模块, 用于当需要采用所述无线局域网络对所述蜂窝网中的所述分 组交换数据进行分流时, 获取接入参数信息;
发送模块, 用于向所述终端发送携带所述接入参数信息的通知消息, 以 供所述终端根据所述接入参数信息选择目标无线接入点对应的无线局域网 络。
29、 根据权利要求 28所述的设备, 其特征在于, 还包括:
判断模块,用于在所述接收模块接收所述终端发送的所述注册请求之后, 当需要采用所述无线局域网络对所述蜂窝网中的所述分组交换数据进行分流 时, 所述获取模块获取接入参数信息之前, 判断是否需要采用所述无线局域 网络对所述蜂窝网中的所述分组交换数据进行分流。
30、 根据权利要求 29所述的设备, 其特征在于, 所述判断模块, 具体用 于从蜂窝网网元或者核心网网元获取所述分组交换数据的业务类型; 并根据 所述业务类型判断是否需要采用所述无线局域网络对所述蜂窝网中的所述分 组交换数据进行分流。
31、 根据权利要求 30所述的设备, 其特征在于, 所述判断模块, 具体用 于获取从归属位置寄存器中获取所述终端对应的用户的优先级; 判断所述终 端对应的用户的优先级是否大于等于预设优先级阈值; 当所述终端对应的用 户优先级大于等于所述预设优先级阈值时, 确定不需要采用所述无线局域网 络对所述蜂窝网中的所述分组交换数据进行分流; 否则当所述终端对应的用 户优先级小于预设优先级阈值时, 确定需要采用所述无线局域网络对所述蜂 窝网中的所述分组交换数据进行分流。
32、 根据权利要求 28-31任一所述的设备, 其特征在于:
所述获取模块, 具体用于获取分流策略消息; 所述分流策略消息用于指 示选择信号强度最好的无线接入点、 或者选择预设频段的无线接入点;
所述发送模块, 具体用于向所述终端发送携带所述分流策略消息的通知 消息, 以供所述终端扫描无线局域网络, 获取第一无线接入点列表, 所述第 一无线接入点列表中包括至少一个无线接入点标识, 以及每一个无线接入点 的信号强度或者每一个无线接入点的频段, 并根据所述分流策略消息, 从所 述第一无线接入点列表中选择所述目标无线接入点对应的无线局域网络。
33、 根据权利要求 28-31任一所述的设备, 其特征在于:
所述获取模块, 具体用于获取分流策略消息和供所述终端接入的无线局 域网络的无线接入点的服务集标识; 所述分流策略消息用以指示选择信号强 度最好的无线接入点、 或者选择预设频段的无线接入点;
所述发送模块, 具体用于向所述终端发送携带所述分流策略消息和所述 无线局域网络的无线接入点的服务集标识的通知消息, 以供所述终端扫描无 线局域网络, 获取第一无线接入点列表, 所述第一无线接入点列表中包括至 少一个无线接入点标识和每一个无线接入点对应的无线局域网络的无线接入 点的服务集标识, 以及每一个无线接入点的信号强度或者每一个无线接入点 的频段; 并根据所述分流策略消息、 所述无线局域网络的无线接入点的服务 集标识和所述第一无线接入点列表, 从所述第一无线接入点列表中选择所述 目标无线接入点对应的无线局域网络。
34、 根据权利要求 28-31任一所述的设备, 其特征在于: 所述接收模块, 具体用于接收终端发送的携带有所述终端的位置信息的 注册请求;
所述获取模块, 具体用于获取所述终端的位置信息对应的所有无线接入 点标识; 获取所述终端的位置信息对应的所有无线接入点标识中的每一个无 线接入点的属性信息; 所述属性信息中包括信噪比、 负荷和吞吐量中的至少 一个; 根据所述终端的位置信息对应的所有无线接入点标识中每一个无线接 入点对应的属性信息, 识别每一个无线接入点的可用性并获取第二无线接入 点列表, 所述第二无线接入点列表包括至少一个能够供所述终端接入的无线 接入点标识和能够供所述终端接入的每一个无线接入点的属性信息; 获取预 设的分流策略信息; 所述分流策略消息用以指示选择信号强度最好的无线接 入点、 选择负荷最小的无线接入点、 或者选择预设频段的无线接入点;
所述发送模块, 具体用于向所述终端发送携带所述分流策略信息和所述 第二无线接入点列表的通知消息, 以供所述终端, 扫描无线局域网络, 获取 第一无线接入点列表, 所述第一无线接入点列表中包括至少一个无线接入点 标识; 并根据所述分流策略消息, 从所述第一无线接入点列表和所述第二无 线接入点列表的交集中选择所述目标无线接入点对应的无线局域网络。
35、 根据权利要求 28-31任一所述的设备, 其特征在于:
所述接收模块, 具体用于接收终端发送的携带有第一无线接入点列表的 注册请求; 所述第一无线接入点列表为所述终端通过扫描无线局域网络获取 的, 所述第一无线接入点列表中包括至少一个无线接入点标识;
所述获取模块, 具体用于获取每一个无线接入点标识对应的属性信息; 根据所述第一无线接入点列表中每一个无线接入点标识对应的属性信息, 识 别每一个无线接入点的可用性并从所述第一无线接入点列表中选取第二无线 接入点列表, 所述第二无线接入点列表包括至少一个能够供所述终端接入的 无线接入点标识和能够供所述终端接入的每一个无线接入点的属性信息; 所 述属性信息中包括信噪比、 负荷和吞吐量中的至少一个; 获取预设的分流策 略信息; 所述分流策略消息用以指示选择信号强度最好的无线接入点、 选择 负荷最小的无线接入点、 或者选择预设频段的无线接入点;
所述发送模块, 具体用于向所述终端发送携带所述分流策略信息和所述 第二无线接入点列表的通知消息, 以供所述终端根据所述分流策略消息, 从 所述第二无线接入点列表中选择所述目标无线接入点对应的无线局域网络。
36、 根据权利要求 28-31任一所述的设备, 其特征在于:
所述接收模块, 具体用于接收终端发送的携带有第一无线接入点列表的 注册请求; 所述第一无线接入点列表为所述终端通过扫描无线局域网络获取 的, 所述第一无线接入点列表中包括至少一个无线接入点标识;
所述获取模块, 具体用于获取每一个无线接入点标识对应的属性信息; 根据所述第一无线接入点列表中每一个无线接入点标识对应的属性信息, 识 别每一个无线接入点的可用性并从所述第一无线接入点列表中选取第二无线 接入点列表; 所述第二无线接入点列表包括至少一个能够供所述终端接入的 无线接入点标识和能够供所述终端接入的每一个无线接入点的属性信息; 所 述属性信息中包括信噪比、 负荷和吞吐量中的至少一个; 根据预设的分流策 略信息从所述第二无线接入点列表中获取的所述目标无线接入点的标识; 所 述分流策略消息用以指示选择负荷最小的无线接入点、 或者选择预设频段的 无线接入点;
所述发送模块, 具体用于向所述终端发送携带所述目标无线接入点的标 识的通知消息。
37、 一种无线局域网络的发现与选择系统, 其特征在于, 包括如上权利 要求 19-27任一所述的终端和如上权利要求 28-36任一所述的无线局域网络发 现与选择设备。
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