CN105491627A - Network selection optimization method for heterogeneous network - Google Patents
Network selection optimization method for heterogeneous network Download PDFInfo
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- CN105491627A CN105491627A CN201510916034.XA CN201510916034A CN105491627A CN 105491627 A CN105491627 A CN 105491627A CN 201510916034 A CN201510916034 A CN 201510916034A CN 105491627 A CN105491627 A CN 105491627A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0066—Transmission or use of information for re-establishing the radio link of control information between different types of networks in order to establish a new radio link in the target network
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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
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The invention provides a method for access network selection according to real-time network conditions, and relates to a network selection optimization method for a heterogeneous network. The heterogeneous network is a network comprising a cellular network and a WLAN, the cellular network is a first network, and the WLAN is a second network. When the service of the first network to which equipment joins is not satisfactory, according to a network list provided by ANDSF and RAN Rules, the equipment offloads the traffic from a top network, and when the load of the first network is too high, or the first network is congested, the equipment can timely switch to the second network. Through adoption of the method, a shortcoming that a better network cannot be selected timely is improved, the network performance is improved, and the resource utilization is maximized.
Description
Technical field
The present invention relates to communication technical field, the network particularly relating to a kind of heterogeneous network selects optimization method.
Background technology
Along with the development of wireless communication technology, for meeting the requirement of user to network throughput, network rate, the appearance of heterogeneous network solves that single network load is high, the problem of throughput degradation, but for the network select permeability of heterogeneous network, is the problem that people constantly explore always.The heterogeneous network scene coexisted for WLAN and LTE system, current network selecting method is normally according to the received signal quality that ANDSF and RANRules is assessed in two networks respectively by user, and the network condition such as load, return bandwidth in conjunction with network carries out the selection of access network or the decision-making of data distribution.This network selection mode by user-driven does not consider the overall performance of network, and how realizing network selection more flexibly between heterogeneous network, and can realize optimization, the maximized utilization of resource of network performance, is current technical problem to be solved.
Summary of the invention
Technical problem to be solved by this invention is the defect for prior art, there is provided a kind of and can carry out access network selecting method according to real-time network condition, in time to the shortcoming that the network more optimized is selected, network performance can not be improve, maximum resource utilance to improve original method.
The present invention is for solving the problems of the technologies described above by the following technical solutions: described heterogeneous network at least comprises a honeycomb class network and two WLAN network of relations, and script equipment comprises mobile phone, pad etc. and is connected to honeycomb class network.
Described network selects optimization method to comprise the following steps:
S1, due to active user too much or overall network situation bad, cause the first network service that connects now undesirable;
S2, when equipment moves to some extent, trigger ANDSF and RANRules;
S3, ANDSF and RANRules measure the network around equipment and assess;
The second network list meeting the condition such as signal strength signal intensity, offered load is sent to equipment by S4, ANDSF and RANRules;
S5, equipment are connected the network that list ranks the first according to the information that ANDSF with RANRules provides;
S6, when device discovery WLAN1 offered load is too high or network congestion time, automatically connect the network that list is number two;
In embodiments of the invention, described heterogeneous network is the network that cellular network and WiFi network coexist, and cellular network is mainly macrocellular network.
The present invention adopts above technical scheme compared with prior art, there is following technique effect: the present invention considers when being switched to wlan network from honeycomb class network, when the WLAN switched can not provide and well serve, avoid equipment to switch and get back to honeycomb class network, saved handover overhead and decreased handover delay.
The a kind of of employing can carry out access network selecting method according to real-time network condition, in time to the shortcoming that the network more optimized is selected, can not improve network performance, maximum resource utilance to improve original method.
Accompanying drawing explanation
Fig. 1 is the access network selection flow chart of heterogeneous network of the present invention.
Fig. 2 is the access network selection flow chart of embodiments of the present invention.
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.It should be noted that, when not conflicting, the feature in following examples and embodiment can combine mutually.
It should be noted that, the diagram provided in following examples 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.
Refer to Fig. 1, the network that the invention provides a kind of heterogeneous network selects optimization method, is applied to internetwork selection, the performance boost of feasible system, has saved handover overhead and has decreased handover delay.
Fig. 1 is the flow chart of the network selection optimization method of a kind of heterogeneous network of the present invention, and heterogeneous network of the present invention at least comprises first network and second network, and described first network and described second network are different wireless networks, and idiographic flow is as follows:
(1). equipment connection, in first network, because active user is too much or overall network situation is bad, causes the first network connected now to serve undesirable;
(2). when equipment moves to some extent, trigger ANDSF and RANRules, or first network initiatively triggers ANDSF and RANRules;
(3) .ANDSF and RANRules measures the network around equipment and assesses;
(4) the second network list meeting the condition such as signal strength signal intensity, offered load is sent to equipment by .ANDSF and RANRules, and WLAN1 ranked first, and WLAN2 ranked second, and gets rid of the network of the same type with first network;
(5). the information that equipment provides according to ANDSF with RANRules is connected WLAN1, and flow is unloaded to WLAN1;
(6). when device discovery WLAN1 offered load is too high or network congestion time, be dynamically connected WLAN2 certainly;
Usually said heterogeneous network can refer to the heterogeneous wireless network that Hierarchical Network (being made up of macrocellular and cellulor) in cellular network and multi-modulation scheme coexist.The present invention is mainly applicable to the heterogeneous wireless network that multi-modulation scheme coexists, and can to realize between minizone or different system more flexibly and network is selected and switched timely.Microcell base station, WLANAP and the AP with cellular basestation colocation site is there is in cellular macro base station range.User can access two networks by two transmission links.The mode that user sets up two transmission links can connect the framework such as (DualConnectivity, DC) or LTE-WLANAggregation or technology based on the double-strand of current R12 version.Article two, link can be respectively wlan network and cellular network.
For convenience of description, the macrocellular as data anchor point is called first network here, wlan network is called second network.First network wide coverage, accessed a large amount of users, load is higher, cause network congestion or Consumer's Experience poor; Second network coverage is little, and access user is few, but due to the technology such as MU-MIMO of access point in second network, have the ability as more user serves, network capacity has room for promotion.Now, transfer of data is carried out under certain customers can be offloaded to second network access point by the access point of first network.Because first network is the data anchor point of overall architecture, control data distribution and the scheduling of network, therefore first network access point clearly understands distribution and the respective transmissions environment of user, makes first network access point can provide this category information to second network access point.
The present invention can switch the network of connection in time and timely flow is unloaded to other networks, and equipment of having saved switches back and forth and serves the situation that can not obtain in time serving, and improves the throughput of network utilization and system, avoids the waste of system resource.
Claims (4)
1. the network of a heterogeneous network selects optimization method, it is characterized in that, described heterogeneous network at least comprises first network and second network, and described first network and described second network are different wireless networks, and described network selects optimization method to comprise the following steps:
S1, equipment connection, in first network, because active user is too much or overall network situation is bad, cause the first network connected now to serve undesirable;
S2, when equipment moves to some extent, trigger ANDSF and RANRules, or first network initiatively triggers ANDSF and RANRules;
S3, ANDSF and RANRules measure the network around equipment and assess;
The network list satisfied condition is sent to equipment by S4, ANDSF and RANRules;
S5, equipment are connected the network that list ranks the first according to the information that ANDSF with RANRules provides, flow is unloaded to this network;
S6, when the network of network load too high that device discovery list ranks the first or network congestion, automatically connect the network that list is number two.
2. the network of a kind of heterogeneous network as claimed in claim 1 selects optimization method, it is characterized in that: described step S3 comprises further: measure the network around equipment and assess and mainly comprise signal strength signal intensity, offered load, up-downgoing feedback etc.
3. the network of a kind of heterogeneous network as claimed in claim 1 selects optimization method, it is characterized in that: described step S4 comprises further: the network list satisfied condition only comprises the network with first network different kind.
4. the network of the heterogeneous network as described in claim 1 and 3 selects optimization method, it is characterized in that: described heterogeneous network is the heterogeneous network that cellular network and WLAN coexist, and described first network is cellular network, and described second network is WLAN.
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| CN201510916034.XA CN105491627A (en) | 2015-12-10 | 2015-12-10 | Network selection optimization method for heterogeneous network |
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| CN201510916034.XA CN105491627A (en) | 2015-12-10 | 2015-12-10 | Network selection optimization method for heterogeneous network |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106131921A (en) * | 2016-07-19 | 2016-11-16 | 南京理工大学 | The access point system of selection of heterogeneous network |
| WO2019028795A1 (en) * | 2017-08-10 | 2019-02-14 | Oppo广东移动通信有限公司 | Method and device for determining service path |
| CN111526492A (en) * | 2020-04-16 | 2020-08-11 | 天翼电信终端有限公司 | VR call method and system |
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| CN111526492A (en) * | 2020-04-16 | 2020-08-11 | 天翼电信终端有限公司 | VR call method and system |
| CN111526492B (en) * | 2020-04-16 | 2021-07-30 | 天翼电信终端有限公司 | VR call method and system |
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