CN105554854A - WIFI switching method and system in local area network - Google Patents
WIFI switching method and system in local area network Download PDFInfo
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- CN105554854A CN105554854A CN201511030165.4A CN201511030165A CN105554854A CN 105554854 A CN105554854 A CN 105554854A CN 201511030165 A CN201511030165 A CN 201511030165A CN 105554854 A CN105554854 A CN 105554854A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
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Abstract
The invention provides a WIFI switching method and system in a local area network. The method comprises the following steps: after receiving a WIFI list, connecting a current AP network, and carrying out a network communication connection through the current AP network; when detecting that the transmission quality of the current AP network is lower than a preset threshold, keeping a current IP address, a TCP connection, a TLS connection and a UDP connection to be unchanged; selecting a target AP network from accessible networks in the WIFI list, and switching to the target AP network; sending an address renewal request to a DHCP server at the current IP address; and receiving the permission of the DHCP server and carrying out the network communication connection through the target AP network. Meanwhile, the invention further discloses a WIFI switching system in the local area network. By adopting the WIFI switching method and system in the local area network, the time of reallocating the IP address and the TCP connection or the UDP connection is shortened, the communication and business interruption time in the switching process in the WIFI local area network is shortened, and the influence of the application program of a corresponding communication terminal is eliminated, and then the user experience is improved.
Description
Technical field
The present invention relates to communication terminal technology field, particularly relate to WIFI changing method and system in local area network (LAN).
Background technology
In existing WIFI network, communication terminal is when AP switches to be needed again to consult distributing IP address with Dynamic Host Configuration Protocol server, and then communication terminal carries out re-establishing of TCP or UDP connection.But there is following shortcoming in this WIFI network switching: because DHCP allocation address process has four interacting messages that come and go, and message is large by DHCP software processing delay, cause communication interruption time in handoff procedure long, find in actual measurement because DHCP cause alternately access WIFI even longer for up to more than ten seconds.In addition, on communication terminal, existing TCP connects to be connected with UDP and can interrupt, and needs to re-establish TCP and connects or UDP connection, increases further and communicates and the interruption time delay of business.
Therefore, be badly in need of at present one and can shorten communication and service outage duration in WIFI handoff procedure, and eliminate WIFI changing method and system in local area network (LAN) that WIFI switches application programs impact.
Summary of the invention
The object of the present invention is to provide WIFI changing method and system in a kind of local area network (LAN), it can shorten communication and service outage duration in WIFI handoff procedure, and eliminates the impact of WIFI switching application programs, to promote Consumer's Experience.
For solving the problems of the technologies described above, invention adopts technical scheme as described below.WIFI changing method in a kind of local area network (LAN), is applied to communication terminal, comprises the following steps: when after reception WIFI list, connect current AP network, and carry out network service connection by current AP network; When current AP network transmission quality being detected lower than predetermined threshold value, keeping current IP address, TCP connection, TLS connects and UDP connects constant, and from the network-connectable WIFI list after select target AP network, switching and be connected to target AP network; Send address with described current IP address to Dynamic Host Configuration Protocol server and re-rent request; And receive the license of Dynamic Host Configuration Protocol server, and carry out network service connection by target AP network.
Preferably, described communication terminal receives the key of each AP network in WIFI list.
Preferably, described from the network-connectable WIFI list select target AP network, described select target AP determines according to network transmission quality, and current AP network lower than setting threshold time, using AP best for network transmission quality in network-connectable as target AP network, and switch to described target AP network; When current AP network reaches setting threshold, current AP network is used to carry out network service connection.
Preferably, described WIFI list is corresponding with described communication terminal current location.
Preferably, described communication terminal comprises IPcamera, mobile phone, notebook computer.
WIFI switched system in a kind of local area network (LAN), application communication terminal, comprises linkage unit, for when after reception WIFI list, connects current AP network, and carries out network service connection by current AP network; Switch unit, for when current AP network transmission quality being detected lower than predetermined threshold value, keep current IP address, TCP connection, TLS connects and UDP connects constant, and from the network-connectable WIFI list after select target AP network, switch and be connected to target AP network; Transmitting element, re-rents request for sending address with described current IP address to Dynamic Host Configuration Protocol server; Receiving element, for receiving the license of Dynamic Host Configuration Protocol server, and carries out network service connection by target AP network.
Preferably, described receiving element is also for receiving the key of each AP network in WIFI list.
Preferably, described switch unit, also for select target AP network from the network-connectable in WIFI list, described select target AP determines according to network transmission quality, and current AP network lower than setting threshold time, using AP best for network transmission quality in network-connectable as target AP network, and switch to described target AP network; When current AP network reaches setting threshold, current AP network is used to carry out network service connection.
Preferably, described WIFI list is corresponding with described communication terminal current location.
Preferably, described communication terminal comprises IPcamera, mobile phone, notebook computer
Advantageous Effects of the present invention is: in this local area network (LAN), WIFI changing method and system are by receiving the WIFI list corresponding with communication terminal current location, when current AP network transmission quality being detected lower than setting threshold, keep current IP address, TCP connection, TLS connects and UDP connects constant, great select target AP network from the network-connectable WIFI list, and re-rent request with current IP address to Dynamic Host Configuration Protocol server transmission, and obtain Dynamic Host Configuration Protocol server license, thus realize carrying out network service connection by target AP network.WIFI changing method and system in this local area network (LAN), by keeping current IP address, TCP connects, TLS connects and UDP connects constant, and send request the license obtaining and continue to use current IP address, keep communication terminal can switch in the WIFI list of current location on the one hand, uninterrupted to ensure that network service connects, save on the other hand Dynamic Host Configuration Protocol server to redistribute the process of IP address and communication terminal and carry out the time that TCP connection or UDP connect, and then shorten WIFI terminal between different AP, carry out time of switching, and shorten the time of communication and service disconnection in handoff procedure in WIFI local area network (LAN), eliminate the impact of corresponding communication terminal application program, thus lifting Consumer's Experience.
Accompanying drawing explanation
Fig. 1 is the flow chart of WIFI changing method in a kind of local area network (LAN) of providing of preferred embodiment.
Fig. 2 is the structured flowchart of WIFI switched system in a kind of local area network (LAN) of providing of preferred embodiment.
Embodiment
For making those of ordinary skill in the art clearly understand the object of invention, technical scheme and advantage, below in conjunction with drawings and Examples, invention is further elaborated.
With reference to shown in Fig. 1, the flow chart of WIFI changing method in a kind of local area network (LAN) provided in the preferred embodiment.In this local area network (LAN) in WIFI changing method 10 application communication terminal, comprise the following steps:
101: when after reception WIFI list, connect current AP network, and carry out network service connection by current AP network.
Particularly, in the present embodiment, communication terminal receives WIFI network list in advance.Preferably, this WIFI list is corresponding with the current location of communication terminal, when communication terminal position changes, in order to ensure that the network service that communication terminal keeps best connects always, communication terminal will be connected as current AP network with nearest AP (wireless access points WirelessAccessPoint) always, and the WIFI network that signal strength signal intensity, network transmission quality also can be had good when position changes to realize communication terminal connects.
102: when current AP network transmission quality being detected lower than predetermined threshold value, keep current IP address, TCP connection, TLS connects and UDP connects constant, and from the network-connectable WIFI list after select target AP network, switch and be connected to target AP network;
Particularly, in the present embodiment, in local area network (LAN), WIFIAP is connected with Dynamic Host Configuration Protocol server by IAD, and after the current AP network of communication terminal connection, DHCP (DynamicHostConfigurationProtocol, DHCP) server will distributing IP address to communication terminal, connect to realize TCP (TransmissionControlProtocol transmission control protocol), TLS (TransportLayerSecurity safe transmission layer protocol) connects and UDP (UserDatagramProtocol User Datagram Protoco (UDP)) connects, thus realize communication terminal and communicated to connect by current AP network.For ensureing the network transmission quality of communication terminal, according to factors such as signal power, packet loss and transmission rates, threshold value is set, when the current AP network of network transmission quality of detection is lower than when arranging threshold value, keep current IP address, TCP connection, TLS connects and UDP connects constant, and from WIFI list, select select target AP network in network-connectable, and switching is connected to target AP network.Particularly, select target AP determines according to network transmission quality, and current AP network lower than setting threshold time, using AP best for network transmission quality in network-connectable as target AP network, and switch to described target AP network; When current AP network reaches setting threshold, current AP network is used to carry out network service connection.
In the present embodiment, communication terminal receives the key of each AP network in WIFI list.Because the network of communication terminal connects the situation that may occur lower than arranging threshold value, for ensureing network transmission quality, communication terminal also receives the key of each AP network while receiving the WIFI list sent by Mobile data from base station, so that communication terminal connects the WIFIAP network issued by Mobile data by base station according to the key received.In the present embodiment, communication terminal comprises IPcamera, the communication equipment such as mobile phone, notebook computer.
103: send address with current IP address to Dynamic Host Configuration Protocol server and re-rent request.
Particularly, in the present embodiment, after communication terminal switches to target AP network by current AP network, address will be sent with current IP address to Dynamic Host Configuration Protocol server and re-rent request, and namely use current IP address and communicated to connect by target AP network.
104: the license receiving Dynamic Host Configuration Protocol server, and carry out network service connection by target AP network.
Particularly, in the present embodiment, Dynamic Host Configuration Protocol server receive use current IP address re-rent request after, communication terminal is directly communicated to connect by target AP network.By this WIFI switching mode, shorten the time that Dynamic Host Configuration Protocol server redistributes IP address.Simultaneously because TCP connection, TLS connection and UDP connect constant, communication terminal connects or UDP connection without the need to re-establishing TCP, thus shorten the time switched in WIFI local further, shorten communication and service outage duration in WIFI handoff procedure, thus eliminate the impact of the corresponding communication terminal application program of handoff procedure in WIFI local area network (LAN).Keep constantly because TCP connects, for the long connection of TCP, avoid and re-establish the long time delay connected of TCP.
With reference to shown in Fig. 2, the structured flowchart of WIFI switched system in a kind of local area network (LAN) provided in the preferred embodiment.In this local area network (LAN), WIFI switched system 20 is applied to communication terminal, comprises linkage unit 21, for when after reception WIFI list, connects current AP network, and carries out network service connection by current AP network; Switch unit 22, for when current AP network transmission quality being detected lower than predetermined threshold value, keep current IP address, TCP connection, TLS connects and UDP connects constant, and from the network-connectable WIFI list after select target AP network, switch and be connected to target AP network; Transmitting element 23, re-rents request for sending address with described current IP address to Dynamic Host Configuration Protocol server; Receiving element 24, for receiving the license of Dynamic Host Configuration Protocol server, and carries out network service connection by target AP network.
Preferably, in the present embodiment, receiving element 24 is also for receiving the key of each AP network in WIFI list.Because the network of communication terminal connects the situation that may occur lower than arranging threshold value, for ensureing network transmission quality, communication terminal also receives the key of each AP network while receiving the WIFI list sent by Mobile data from base station, so that communication terminal connects the WIFIAP network issued by Mobile data by base station according to the key received.
Preferably, in the present embodiment, switch unit 22 is also for select target AP network from the network-connectable in WIFI list, select target AP determines according to network transmission quality, and current AP network lower than setting threshold time, using AP best for network transmission quality in network-connectable as target AP network, and switch to described target AP network; When current AP network reaches setting threshold, current AP network is used to carry out network service connection.
For ensureing the network transmission quality of communication terminal, according to factors such as signal power, packet loss and transmission rates, threshold value is set, when the current AP network of network transmission quality of detection is lower than when arranging threshold value, keep current IP address, TCP connection, TLS connects and UDP connects constant, and from WIFI list, select select target AP network in network-connectable, and switching is connected to target AP network.Particularly, select target AP determines according to network transmission quality, and current AP network lower than setting threshold time, using AP best for network transmission quality in network-connectable as target AP network, and switch to described target AP network; When current AP network reaches setting threshold, current AP network is used to carry out network service connection
Preferably, WIFI list is corresponding with described communication terminal current location.When communication terminal position changes, in order to ensure that the network service that communication terminal keeps best connects always, communication terminal will be connected as current AP network with nearest AP always, and the WIFI network that signal strength signal intensity, network transmission quality also can be had good when position changes to realize communication terminal connects.
Preferably, communication terminal comprises IPcamera, the communication equipment such as mobile phone, notebook computer.
In this local area network (LAN), WIFI switched system 20 is received from base station by the WIFI list that Mobile data sends by receiving element 24, and communicated to connect by current AP network, when detecting that current AP network of network transmission quality is lower than when arranging threshold value, keep current IP address, TCP connects, TLS connects and UDP connects constant, in WIFI list, select select target AP network in network-connectable to connect, send IP address by transmitting element 23 to Dynamic Host Configuration Protocol server simultaneously and re-rent request, and obtain the license of Dynamic Host Configuration Protocol server, thus communication terminal is by target AP Web vector graphic current IP address, and connected by TCP or UDP connect carry out network service connection.Dynamic Host Configuration Protocol server can be shortened by WIFI switched system 20 in this local area network (LAN) to redistribute the process of IP address and communication terminal and carry out the time that TCP connection or UDP connect, and then shorten the time that WIFI terminal carries out switching between different AP, and shorten the time of communication and service disconnection in handoff procedure in WIFI local area network (LAN), eliminate the impact of corresponding communication terminal application program, thus promote Consumer's Experience.
The foregoing is only the preferred embodiment of invention, but not any pro forma restriction is done to invention.Those skilled in the art can impose various equivalent change and improvement on the basis of above-described embodiment, all equivalent variations of doing in right or modification, within the protection range that all should fall into invention.
Claims (10)
1. WIFI changing method in local area network (LAN), is applied to communication terminal, it is characterized in that, comprise the following steps:
When after reception WIFI list, connect current AP network, and carry out network service connection by current AP network;
When current AP network transmission quality being detected lower than predetermined threshold value, keeping current IP address, TCP connection, TLS connects and UDP connects constant, and from the network-connectable WIFI list after select target AP network, switching and be connected to target AP network;
Send address with described current IP address to Dynamic Host Configuration Protocol server and re-rent request; And
Receive the license of Dynamic Host Configuration Protocol server, and carry out network service connection by target AP network.
2. WIFI changing method in local area network (LAN) as claimed in claim 1, is characterized in that: described communication terminal receives the key of each AP network in WIFI list.
3. WIFI changing method in local area network (LAN) as claimed in claim 1, it is characterized in that: described from the network-connectable WIFI list select target AP network, described select target AP determines according to network transmission quality, and current AP network lower than setting threshold time, using AP best for network transmission quality in network-connectable as target AP network, and switch to described target AP network; When current AP network reaches setting threshold, current AP network is used to carry out network service connection.
4. WIFI changing method in the local area network (LAN) as described in claim 1 or 2 or 3, is characterized in that: described WIFI list is corresponding with described communication terminal current location.
5. WIFI changing method in local area network (LAN) as claimed in claim 1, is characterized in that: described communication terminal comprises IPcamera, mobile phone, notebook computer.
6. a WIFI switched system in local area network (LAN), is applied to communication terminal, it is characterized in that, comprising:
Linkage unit, for when after reception WIFI list, connects current AP network, and carries out network service connection by current AP network;
Switch unit, for when current AP network transmission quality being detected lower than predetermined threshold value, keep current IP address, TCP connection, TLS connects and UDP connects constant, and from the network-connectable WIFI list after select target AP network, switch and be connected to target AP network;
Transmitting element, re-rents request for sending address with described current IP address to Dynamic Host Configuration Protocol server;
Receiving element, for receiving the license of Dynamic Host Configuration Protocol server, and carries out network service connection by target AP network.
7. WIFI switched system in local area network (LAN) as claimed in claim 6, is characterized in that: described receiving element is also for receiving the key of each AP network in WIFI list.
8. WIFI switched system in local area network (LAN) as claimed in claim 6, it is characterized in that: described switch unit, also for select target AP network from the network-connectable in WIFI list, described select target AP determines according to network transmission quality, and current AP network lower than setting threshold time, using AP best for network transmission quality in network-connectable as target AP network, and switch to described target AP network; When current AP network reaches setting threshold, current AP network is used to carry out network service connection.
9. WIFI switched system in the local area network (LAN) as described in claim 6 or 7 or 8, is characterized in that: described WIFI list is corresponding with described communication terminal current location.
10. WIFI switched system in local area network (LAN) as claimed in claim 6, is characterized in that: described communication terminal comprises IPcamera, mobile phone, notebook computer.
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| CN105813056A (en) * | 2016-05-06 | 2016-07-27 | 广东欧珀移动通信有限公司 | Network access method and terminal |
| CN106657262A (en) * | 2016-11-11 | 2017-05-10 | 中车大连电力牵引研发中心有限公司 | Vehicle record file transmission method and vehicle data recorder |
| CN107454588A (en) * | 2017-06-14 | 2017-12-08 | 西安瀚炬网络科技有限公司 | The AP collocation methods of roaming are realized in a kind of WiFi network |
| CN107484223A (en) * | 2017-08-23 | 2017-12-15 | 杭州迪普科技股份有限公司 | A kind of method and device of terminal roaming switching |
| CN107846715A (en) * | 2016-09-20 | 2018-03-27 | 深圳市盛路物联通讯技术有限公司 | Access point switching method and device of the Internet of Things based on transmission rate |
| CN107949024A (en) * | 2018-01-08 | 2018-04-20 | 广东欧珀移动通信有限公司 | AP method for handover control and device, electronic device and computer-readable recording medium |
| CN108307466A (en) * | 2018-02-02 | 2018-07-20 | 广东欧珀移动通信有限公司 | Method for switching network, device, terminal, server and storage medium |
| CN108512698A (en) * | 2018-03-15 | 2018-09-07 | 北京奇艺世纪科技有限公司 | A kind of network disaster tolerance method, device and electronic equipment |
| CN108882324A (en) * | 2018-09-27 | 2018-11-23 | 北京安云世纪科技有限公司 | Processing method, device, computer equipment and the storage medium of intelligence switching WiFi |
| CN113038547A (en) * | 2019-12-24 | 2021-06-25 | 深圳市万普拉斯科技有限公司 | Network connection method and device and mobile terminal |
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| CN108882324A (en) * | 2018-09-27 | 2018-11-23 | 北京安云世纪科技有限公司 | Processing method, device, computer equipment and the storage medium of intelligence switching WiFi |
| CN113038547A (en) * | 2019-12-24 | 2021-06-25 | 深圳市万普拉斯科技有限公司 | Network connection method and device and mobile terminal |
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