CN104768195A - Heterogeneous wireless network system capable of realizing seamless switching and seamless switching method - Google Patents
Heterogeneous wireless network system capable of realizing seamless switching and seamless switching method Download PDFInfo
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- CN104768195A CN104768195A CN201410003082.5A CN201410003082A CN104768195A CN 104768195 A CN104768195 A CN 104768195A CN 201410003082 A CN201410003082 A CN 201410003082A CN 104768195 A CN104768195 A CN 104768195A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
- H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
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Abstract
The invention provides a heterogeneous wireless network system capable of realizing seamless switching and a seamless switching method. The method comprises the following steps: determining whether or not other wireless access points capable of performing wireless communication with user equipment exist on the basis of the first relevant information of each wireless access point by using a seamless switching controller, and if so, transmitting the second relevant information of the other wireless access points to the user equipment through a network convergence switch by the seamless switching controller; when pre-access request information from the user equipment is received, accessing a user identity database, establishing a data transmission tunnel between the other wireless access points and the network convergence switch after acceptance is confirmed, and feeding result information to the user equipment; and after the user equipment receives the result information, sending a link request to the other wireless access points in order to communicate with the other wireless access points, so that wireless switching of the user equipment between heterogeneous networks is realized.
Description
Technical field
The present invention relates to heterogeneous wireless network, particularly relate to a kind of heterogeneous wireless network system and the seamless handover method that can realize seamless switching.
Background technology
The wireless cellular network of isomorphism, for reaching the seamless switching of mobile terminal between honeycomb, ensureing that the service of customer service continuity is spent, mainly taking measures in 2:
1, wireless network planning, ensures do not have wireless coverage cavity between honeycomb;
2, mutual Survey control and measurement report information between mobile terminal and base station, base station to the measurement report of 2 adjacent cells, controls the switching of mobile terminal between 2 adjacent cells according to mobile terminal.
The wireless cellular network of isomorphism, provides a kind of wireless continuity service of wide area.In partial service hot spot region, the particularly consumer entertainment place, public transport point, social Condom etc. of down town, the data volume that these regions produce, need to carry out supplementary covering to absorb by some wireless little base station equipments, such as WiFi(Wireless Fidelity, the WLAN (wireless local area network) based on IEEE802.11 standard).
Between heterogeneous network, compare the wireless cellular network of isomorphism, lack necessary wireless network planning, interface aloft, lack measurement and control flow, further, lack interface and carry out the mutual of space interface signaling between the wireless network due to various criterion, there are the following problems in the switching making between heterogeneous wireless network:
1, be redirected formula to switch, cannot handover success rate be ensured;
2, handoff procedure has blindness, lacks necessary controlling mechanism to ensure that mobile terminal switches into suitable Target cell from former Serving cell;
3, handoff delay is comparatively large, cannot ensure the QoS of user.
In sum, need a kind of method switched between heterogeneous network, to ensure that mobile terminal is when being switched to another one network from a network, can switch into suitable cell, and then ensureing the QoS of user, the switching reached between a kind of seamless heterogeneous network is smoothly experienced.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of heterogeneous wireless network system and the seamless handover method that can realize seamless switching.
For achieving the above object and other relevant objects, the invention provides a kind of heterogeneous wireless network system that can realize seamless switching, it at least comprises:
All can carry out the first kind WAP (wireless access point) that communicates and at least one Equations of The Second Kind WAP (wireless access point) with subscriber equipment, wherein, first kind WAP (wireless access point) belongs to different wireless networks respectively from each Equations of The Second Kind WAP (wireless access point);
The networks converge switch communicated to connect with described first kind WAP (wireless access point) and Equations of The Second Kind WAP (wireless access point);
The seamless switching controller be connected with described networks converge switch communication, switches operation for the wireless connections controlled between subscriber equipment and first kind WAP (wireless access point) and Equations of The Second Kind WAP (wireless access point);
The user ID data storehouse be connected with described seamless switching controller, for storing the identity information of user in heterogeneous networks and the mapping relations of CAMEL-Subscription-Information or the identity in heterogeneous networks and CAMEL-Subscription-Information.
Preferably, the described heterogeneous wireless network system that can realize seamless switching also comprises: belong to same wireless network with first kind WAP (wireless access point) and the first kind network controller communicated to connect with described seamless switching controller and user ID data storehouse.
Preferably, the described heterogeneous wireless network system that can realize seamless switching also comprises: belong to same wireless network with Equations of The Second Kind WAP (wireless access point) and the Equations of The Second Kind network controller communicated to connect with described seamless switching controller and user ID data storehouse.
Preferably, the wireless coverage of first kind WAP (wireless access point) comprises the wireless coverage of Equations of The Second Kind WAP (wireless access point); Or the wireless coverage of the wireless coverage of first kind WAP (wireless access point) and Equations of The Second Kind WAP (wireless access point) partly overlaps; Or the wireless coverage of first kind WAP (wireless access point) closes on the wireless coverage etc. of Equations of The Second Kind WAP (wireless access point).
The present invention also provides a kind of method of heterogeneous wireless network seamless switching, and it at least comprises:
Seamless switching controller determines whether to carry out other WAP (wireless access point) of radio communication with subscriber equipment based on the first relevant information of each WAP (wireless access point), and wherein, other WAP (wireless access point) described are the current WAP (wireless access point) do not connected of described subscriber equipment;
Can carry out other WAP (wireless access point) of radio communication with described subscriber equipment if having, then the second relevant information of these other WAP (wireless access point) is sent to described subscriber equipment by networks converge switch by described seamless switching controller;
When described subscriber equipment is wanted to link these other WAP (wireless access point), send pre-access solicited message by its current connected WAP (wireless access point);
Described seamless switching controller is based on received pre-access solicited message calling party identity database, and the data transmission tunnel between these other WAP (wireless access point) and described networks converge switch is set up in confirmation after can receiving, and object information is fed back to described subscriber equipment by described current connected WAP (wireless access point);
Described subscriber equipment receives described object information these other WAP (wireless access point) backward and sends linking request, to communicate with these other WAP (wireless access point).
Preferably, the method of described heterogeneous wireless network seamless switching also comprises: the network controller that received pre-access solicited message sends to other wireless connections points to connect by described seamless switching controller, and after this network controller can be received through by the confirmation of calling party identity database, described seamless switching controller sets up the data transmission tunnel between these other WAP (wireless access point) and described networks converge switch based on received pre-access solicited message again, and object information is fed back to described subscriber equipment by described current connected WAP (wireless access point)
As mentioned above, heterogeneous wireless network system and the seamless handover method that can realize seamless switching of the present invention, there is following beneficial effect: can under the control of seamless switching controller, terminal completes in the pre-registration of objective network, registration and address allocation procedure by former Serving cell, build data transmission tunnel between necessary network anchor point and objective network, reduce the delay of terminal in network switching process, improve the susceptibility of user.
Accompanying drawing explanation
Fig. 1 is shown as the heterogeneous wireless network system schematic that can realize seamless switching of the present invention.
Fig. 2 is shown as the heterogeneous wireless network system schematic that another kind of the present invention preferably can realize seamless switching.
Fig. 3 be shown as of the present invention another preferably can realize the heterogeneous wireless network system schematic of seamless switching.
Fig. 4 is shown as the flow chart of the method for heterogeneous wireless network seamless switching of the present invention.
Element numbers explanation
1 heterogeneous wireless network system
11 first kind WAP (wireless access point)
12 Equations of The Second Kind WAP (wireless access point)
13 networks converge switches
14 seamless switching controllers
15 user ID data storehouses
16 first kind network controllers
17 Equations of The Second Kind network controllers
Embodiment
Below by way of specific instantiation, embodiments of the present invention are described, those skilled in the art the content disclosed by this specification can understand other advantages of the present invention and effect easily.The present invention can also be implemented or be applied by embodiments different in addition, and the every details in this specification also can based on different viewpoints and application, carries out various modification or change not deviating under spirit of the present invention.
Refer to Fig. 1 to Fig. 4.It should be noted that, the diagram provided in the present embodiment only illustrates basic conception of the present invention in a schematic way, then only the assembly relevant with the present invention is shown in graphic but not component count, shape and size when implementing according to reality is drawn, it is actual when implementing, and the kenel of each assembly, quantity and ratio can be a kind of change arbitrarily, and its assembly layout kenel also may be more complicated.
As shown in Figure 1, the invention provides a kind of heterogeneous wireless network system that can realize seamless switching.Described heterogeneous wireless network system 1 at least comprises: first kind WAP (wireless access point) 11, at least one Equations of The Second Kind WAP (wireless access point) 12, networks converge switch 13, seamless switching controller 14 and user ID data storehouse 15.
Described first kind WAP (wireless access point) 11 can communicate with subscriber equipment, and it is preferably mobile network, such as, WAP (wireless access point) etc. in GSM network, 3G network or 4G network.
Such as, as the WAP (wireless access point) A in Fig. 1 and 2 belongs to first kind WAP (wireless access point).
Described Equations of The Second Kind WAP (wireless access point) 12 also can communicate with subscriber equipment, and it is preferably the WAP (wireless access point) etc. in Wi-Fi network.
Such as, as the WAP (wireless access point) B in Fig. 1, C belong to Equations of The Second Kind WAP (wireless access point); WAP (wireless access point) B ' in Fig. 2 also belongs to Equations of The Second Kind WAP (wireless access point).
Wherein, can be comprise and involved relation between the wireless coverage of first kind WAP (wireless access point) 11 and the wireless coverage of Equations of The Second Kind WAP (wireless access point) 12, also can be partly overlapping relation, can also be adjacent relation etc.
Such as, as shown in Figure 1, the wireless coverage of WAP (wireless access point) A comprises the wireless coverage of WAP (wireless access point) B, C.
Again such as, as shown in Figure 2, the wireless coverage of WAP (wireless access point) A and the wireless coverage of WAP (wireless access point) B ' are closed on.
Described networks converge switch 13 communicates to connect with described first kind WAP (wireless access point) 11 and Equations of The Second Kind WAP (wireless access point) 12, for the communication information from described first kind WAP (wireless access point) 11 and Equations of The Second Kind WAP (wireless access point) 12 is sent to described seamless switching controller 14, or the communication information from described seamless switching controller 14 is sent to described first kind WAP (wireless access point) 11 or Equations of The Second Kind WAP (wireless access point) 12.
Described seamless switching controller 14 and described networks converge switch 13 communicate to connect, and switch operation for the wireless connections controlled between subscriber equipment and first kind WAP (wireless access point) 11 and Equations of The Second Kind WAP (wireless access point) 12.
Particularly, described seamless switching controller 14 is responsible for following function:
A, collect the information of each WAP (wireless access point), the load condition of each WAP (wireless access point) and QoS are added up;
B, manage the topological structure of each WAP (wireless access point);
The Serving cell that c, the WAP (wireless access point) being responsible for being connected to subscriber equipment transmission and its provide have adjacent, comprise, the information of network cell that other WAP (wireless access point) that are involved and closer distance provide;
The tutorial message that d, the network cell being responsible for providing other WAP (wireless access point) to provide to subscriber equipment are accessed, tutorial message comprises load condition and the QoS of WAP (wireless access point);
E, control subscriber equipment by its WAP (wireless access point) connected to the pre-registration of objective network, pre-receiving, address preassignment, the pre-established process of data transmission tunnel;
F, the route of control subscriber equipment on networks converge switch.
The unified storage identity information of user in heterogeneous networks and the mapping relations etc. of CAMEL-Subscription-Information or the identity in heterogeneous networks and CAMEL-Subscription-Information are responsible in described user ID data storehouse 15.
As a kind of optimal way, described heterogeneous wireless network system 1 also can comprise first kind network controller 16 and Equations of The Second Kind network controller 17.
Described first kind network controller 16 belongs to same wireless network with first kind WAP (wireless access point) 11, and communicates to connect with described seamless switching controller 14 and user ID data storehouse 15.
Such as, network controller A in Fig. 2 and Fig. 3 and WAP (wireless access point) A belongs to same wireless network, for carrying out inquiring user CAMEL-Subscription-Information by calling party identity database 15 and performing subscriber equipment in the pre-receiving of WAP (wireless access point) A, authentication and security processes etc.
Described Equations of The Second Kind network controller 17 belongs to same wireless network with Equations of The Second Kind WAP (wireless access point) 12, communicates to connect with described seamless switching controller 14 and user ID data storehouse 15.
Such as, network controller B ' in Fig. 2 and WAP (wireless access point) B ' belong to same wireless network, for carrying out inquiring user CAMEL-Subscription-Information by calling party identity database 15 and performing subscriber equipment in the pre-receiving of WAP (wireless access point) B ', authentication and security processes etc.
Again such as, network controller B in Fig. 3 and WAP (wireless access point) B, C belong to same wireless network, for carrying out inquiring user CAMEL-Subscription-Information by calling party identity database 15 and performing subscriber equipment in the pre-receiving of WAP (wireless access point) B or C, authentication and security processes etc.
As shown in Figure 4, it is the seamless switching procedure figure of heterogeneous wireless network system:
First, seamless switching controller 14 determines whether to carry out other WAP (wireless access point) of radio communication with subscriber equipment based on the first relevant information of each WAP (wireless access point), wherein, other WAP (wireless access point) described are the current WAP (wireless access point) do not connected of described subscriber equipment.
Particularly, when other WAP (wireless access point) load condition assessment and QoS assess all meet threshold requirement, that is: load condition is less than load condition thresholding, QoS is greater than QoS thresholding, then described seamless switching controller 14 defines and can carry out other WAP (wireless access point) of radio communication with described terminal X.
Such as, as shown in Figure 3, the terminal X as subscriber equipment resides in the wireless coverage of WAP (wireless access point) A and WAP (wireless access point) B, C, wherein, the wireless coverage of WAP (wireless access point) B, C comprise by the wireless coverage of WAP (wireless access point) A; Described seamless switching controller 14 is responsible for safeguarding WAP (wireless access point) A, B and C topological structure relation, the load condition of collection WAP (wireless access point) A, B and C and QoS information, obtain WAP (wireless access point) A, the load condition of B and C assesses and QoS is assessed.Be provided with network controller A in wireless network A, in wireless network B, be provided with network controller B.If WAP (wireless access point) B current loads state is AccessBLoadEvoluationInfo, WAP (wireless access point) C current loads state is AccessCLoadEvoluationInfo, WAP (wireless access point) B current business service quality assessment is AccessBQoSEvoluationInfo, WAP (wireless access point) C current business service quality assessment is AccessCQoSEvoluationInfo, and to arrange load condition thresholding be LoadThd and QoS thresholding is QoSThd, wherein, current AccessBLoadEvoluationInfo<LoadThd, AccessCLoadEvoluationInfo>LoadThd, AccessBQoSEvoluationInfo<LoadThd, AccessCQoSEvoluationInfo>LoadThd, then described seamless switching controller 14 determines that WAP (wireless access point) B can carry out the WAP (wireless access point) of radio communication with described terminal X.
Again such as, as shown in Figure 2, terminal X ' resides in the wireless coverage of WAP (wireless access point) A and WAP (wireless access point) B ', wherein, the WAP (wireless access point) of the current connection of terminal X ' is WAP (wireless access point) A, and the load condition assessment of WAP (wireless access point) B ' and QoS are assessed and all met threshold requirement, then described seamless switching controller 14 determines that WAP (wireless access point) B ' can carry out the WAP (wireless access point) of radio communication with described terminal X '.
Then, can carry out other WAP (wireless access point) of radio communication with described subscriber equipment if having, then the second relevant information of these other WAP (wireless access point) is sent to described subscriber equipment by networks converge switch by described seamless switching controller 14.
Such as, described seamless switching controller 14 sends WAP (wireless access point) B information to terminal X.
Then, when described subscriber equipment is wanted to link these other WAP (wireless access point), pre-access solicited message is sent by its current connected WAP (wireless access point).
Such as, terminal X is by the user plane bearer of WAP (wireless access point) A, send the pre-access request data package of WAP (wireless access point) B, request data package is transmitted to described seamless switching controller 14 through networks converge switch 13, and pre-access request data package comprises: the identity information, current service wireless access dot information, request pre-access wireless access dot information etc. of terminal X.
Then, described seamless switching controller 14 is based on received pre-access solicited message calling party identity database 15, and the data transmission tunnel between these other WAP (wireless access point) and described networks converge switch 13 is set up in confirmation after can receiving, and object information is fed back to described subscriber equipment by described current connected WAP (wireless access point).
Such as, after described seamless switching controller 14 receives the pre-access request data package of the WAP (wireless access point) B of terminal X, pre-access request data package is transmitted to network controller B, network controller B calling party identity database, inquiring user CAMEL-Subscription-Information, perform terminal X in the pre-receiving of WAP (wireless access point) B, authentication and security processes, and will object information be received in advance to feed back to described seamless switching controller 14; If receive successfully in advance, described seamless switching controller 14 be the pre-established WAP (wireless access point) B of terminal X through the data transmission tunnel of wireless access point network B to networks converge switch 13, and result is fed back to terminal X by wireless network A; If needed, in above process, described seamless switching controller 14 is also distributed in the IP address in wireless network B for terminal X.
Then, described subscriber equipment receives described object information these other WAP (wireless access point) backward and sends linking request, to communicate with these other WAP (wireless access point).
Such as, after terminal X receives the feedback information of described seamless switching controller 14, store WAP (wireless access point) B information, and the wireless signal of monitoring wireless access point B at certain intervals; The radio signal quality of the WAP (wireless access point) B detected as terminal X is greater than pre-configured thresholding, terminal X initiates to set up the link process of eating dishes without rice or wine between WAP (wireless access point) B, when eating dishes without rice or wine, link establishment completes, and activate the tunnel set up, terminal X can be received by wireless network B and send data; In addition, whether terminal X keeps the link of eating dishes without rice or wine between WAP (wireless access point) A, is determined by network controller A, and when the link of eating dishes without rice or wine between terminal X and WAP (wireless access point) A is removed, described seamless switching controller 14 upgrades the routing table on networks converge switch.
In sum, of the present invention can realize seamless switching heterogeneous wireless network system and seamless handover method by under the control of seamless switching controller, implement terminal and receive in advance at object network, register and enrollment process; When having good overlapping covering between heterogeneous network, the route handoff under being controlled by seamless switching controller, is made terminal to zero perception of handoff procedure, reaches the seamless switching between heterogeneous wireless network; Between heterogeneous network, there is no good overlapping covering, when there is certain network cavity, because terminal is in the pre-receiving process of objective network, therefore can reach the object of the fast quick-recovery of terminal and external network data exchange yet.So the present invention effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (8)
1. can realize a heterogeneous wireless network system for seamless switching, it is characterized in that, the described heterogeneous wireless network system that can realize seamless switching at least comprises:
All can carry out the first kind WAP (wireless access point) that communicates and at least one Equations of The Second Kind WAP (wireless access point) with subscriber equipment, wherein, first kind WAP (wireless access point) belongs to different wireless networks respectively from each Equations of The Second Kind WAP (wireless access point);
The networks converge switch communicated to connect with described first kind WAP (wireless access point) and Equations of The Second Kind WAP (wireless access point);
The seamless switching controller be connected with described networks converge switch communication, switches operation for the wireless connections controlled between subscriber equipment and first kind WAP (wireless access point) and Equations of The Second Kind WAP (wireless access point);
The user ID data storehouse be connected with described seamless switching controller, for storing the identity information of user in heterogeneous networks and the mapping relations of CAMEL-Subscription-Information or the identity in heterogeneous networks and CAMEL-Subscription-Information.
2. the heterogeneous wireless network system that can realize seamless switching according to claim 1, characterized by further comprising: belong to same wireless network with first kind WAP (wireless access point) and the first kind network controller communicated to connect with described seamless switching controller and user ID data storehouse.
3. the heterogeneous wireless network system that can realize seamless switching according to claim 1, characterized by further comprising: belong to same wireless network with Equations of The Second Kind WAP (wireless access point) and the Equations of The Second Kind network controller communicated to connect with described seamless switching controller and user ID data storehouse.
4. the heterogeneous wireless network system that can realize seamless switching according to claim 1, is characterized in that: the wireless coverage of first kind WAP (wireless access point) comprises the wireless coverage of Equations of The Second Kind WAP (wireless access point).
5. the heterogeneous wireless network system that can realize seamless switching according to claim 1, is characterized in that: the wireless coverage of first kind WAP (wireless access point) closes on the wireless coverage of Equations of The Second Kind WAP (wireless access point).
6. the heterogeneous wireless network system that can realize seamless switching according to claim 1, is characterized in that: the wireless coverage of first kind WAP (wireless access point) and the wireless coverage of Equations of The Second Kind WAP (wireless access point) partly overlap.
7. a method for heterogeneous wireless network seamless switching, is characterized in that, the method for described heterogeneous wireless network seamless switching at least comprises:
Seamless switching controller determines whether to carry out other WAP (wireless access point) of radio communication with subscriber equipment based on the first relevant information of each WAP (wireless access point), and wherein, other WAP (wireless access point) described are the current WAP (wireless access point) do not connected of described subscriber equipment;
Can carry out other WAP (wireless access point) of radio communication with described subscriber equipment if having, then the second relevant information of these other WAP (wireless access point) is sent to described subscriber equipment by networks converge switch by described seamless switching controller;
When described subscriber equipment is wanted to link these other WAP (wireless access point), send pre-access solicited message by its current connected WAP (wireless access point);
Described seamless switching controller is based on received pre-access solicited message calling party identity database, and the data transmission tunnel between these other WAP (wireless access point) and described networks converge switch is set up in confirmation after can receiving, and object information is fed back to described subscriber equipment by described current connected WAP (wireless access point);
Described subscriber equipment receives described object information these other WAP (wireless access point) backward and sends linking request, to communicate with these other WAP (wireless access point).
8. the method for heterogeneous wireless network seamless switching according to claim 7, characterized by further comprising:
The network controller that received pre-access solicited message sends to other wireless connections points to connect by described seamless switching controller, and after this network controller can be received through by the confirmation of calling party identity database, described seamless switching controller sets up the data transmission tunnel between these other WAP (wireless access point) and described networks converge switch based on received pre-access solicited message again, and object information is fed back to described subscriber equipment by described current connected WAP (wireless access point).
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| CN110114987B (en) * | 2016-12-23 | 2020-12-01 | 华为技术有限公司 | Switching method, terminal and domain master node |
| CN110881020A (en) * | 2018-09-06 | 2020-03-13 | 大唐移动通信设备有限公司 | Authentication method for user subscription data and data management network element |
| CN110881020B (en) * | 2018-09-06 | 2021-07-23 | 大唐移动通信设备有限公司 | Authentication method for user subscription data and data management network element |
| CN113261316A (en) * | 2018-11-21 | 2021-08-13 | 思科技术公司 | Roaming alliance identifier (RCOI) based system for handling identity requirements |
| CN111630883A (en) * | 2020-03-20 | 2020-09-04 | 北京小米移动软件有限公司 | Method, device, communication equipment and storage medium for transmitting data |
| CN111630883B (en) * | 2020-03-20 | 2023-09-19 | 北京小米移动软件有限公司 | Method, device, communication equipment and storage medium for transmitting data |
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