CN102045776B - Adaptive traffic stream switching method for communication network system and corresponding server - Google Patents
Adaptive traffic stream switching method for communication network system and corresponding server Download PDFInfo
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Abstract
The invention provides an adaptive traffic stream switching method. For each multi-interface terminal, the method comprises the following steps that: 1) a traffic stream switching management server periodically acquires current user information and current link state of the multi-interface terminal; 2) the traffic stream switching management server establishes judgment matrixes respectively on the basis of an analytic hierarchy process, and calculates the comprehensive satisfaction of all the interfaces of the multi-interface terminal; 3) all the traffic streams are ranged into a preswitched queue from high to low according to traffic priority, and all the interfaces are ranged into an interface queue from high to low according to the comprehensive satisfaction of the interfaces; 4) mapping of all the traffic streams and all the interfaces are established to form a matching relation; and 5) traffic stream switching is preformed according to the matching relation. By the method, the communication performance of all current network interfaces can be accurately responded, the cost of user sides cannot be obviously increased, and the requirements of users are fully considered when the quality of service (QOS) of all the traffic streams is guaranteed. In the method, mobile scenes are supported, and non-mobile scenes are also supported.
Description
Technical field
The present invention relates to the distribution of traffic flows technical field, specifically, the present invention relates to a kind of self-adapted service stream switching method for communications network system and corresponding Business Stream handover management server.
Background technology
Next-generation communication network will be the complete IP network that plurality of access modes merges, and the characteristics of this mixture of networks, isomery are for the application of many interface terminations provides wide prospect.Multiple interfaces that many interface terminations are integrated can use multiple cable resource, Radio Resource to carry out the Business Stream transmission simultaneously.The even rear 3G epoch of 3G have been arrived, multiple system is also deposited, TD-SCDMA, WCDMA, CDMA2000, LTE etc. may be present in the network of one or more operators simultaneously, and also development of many interface terminations of supporting simultaneously multiple types, this switching problem between each interfaces of many interface terminations just occurred.
The switching that current many interface terminations are supported can realize switching and the switching take stream as granularity take interface as granularity.Switching take interface as granularity makes originally to have application that different service quality requires and is bundled in together and switches, and switches to most suitable oneself network interface and gets on thereby can't make each use.And the switching take stream as granularity can be avoided the problems referred to above.
At present, the interface handover scheme take stream as granularity is mostly initiated by terminal, and this makes terminal increase a large amount of expenses beyond proper communication.
The patent application CN200910083521.7 of Inst. of Computing Techn. Academia Sinica has proposed multi-interface service flow switching method and the device in a kind of mobile communication system, and it is a kind of user triggers under the proxy mobile IPv 6 environment service flow switching method and device.The patent application 200910087426.4 that Huawei Tech Co., Ltd proposes has proposed a kind ofly to support simultaneously the user to trigger service flow switching method, the System and Network equipment with network-triggered under the proxy mobile IPv 6 environment.Above-mentioned two patents are and relate to the intelligent handover decision algorithm of carrying out switch decision according to the many factors such as characteristics, current link circuit condition and other user's requests of different kinds of business stream, therefore are difficult to Business Stream reasonably is assigned on the different network interface of terminal.
In addition, above-mentioned stream handoff technique is all only supported mobile context, is in the many interface terminations under non-moving scene, can't enjoy the service that Business Stream switches.
Therefore, currently the mobile non-moving scene of also supporting be can both support in the urgent need to a kind of, and can self-adapted service stream switching method and corresponding Business Stream handover management server on the different network interface of terminal reasonably be assigned to Business Stream according to the many factors such as characteristics, current link circuit condition and other user's requests of different kinds of business stream.
Summary of the invention
The purpose of this invention is to provide and a kind ofly both supported mobile context also to support non-moving scene, can reasonably be assigned to self-adapted service stream switching method and corresponding Business Stream handover management server on the different network interface of terminal to Business Stream according to the many factors such as characteristics, current link circuit condition and other user's requests of different kinds of business stream.
For achieving the above object, the invention provides a kind of self-adapted service stream switching method, relate to Business Stream handover management server and many interface terminations, described self-adapted service stream switching method comprises:
For each many interface termination, carry out the following step:
1) described Business Stream handover management server periodically obtains active user's information and the current link circuit condition of these many interface terminations;
2) described Business Stream handover management server is set up respectively judgment matrix based on analytic hierarchy process (AHP), and calculates the comprehensive satisfaction of each interface of these many interface terminations; Wherein, with the general objective of interface synthesis satisfaction as destination layer, with active user's information and the current link circuit condition partial objectives for as rule layer, with each usable interfaces of described many interface terminations possibility as solution layer;
3) according to service priority order from high to low, each Business Stream is arranged formation pre-switch formation, according to interface synthesis satisfaction order from high to low, each interface arrangement is formed interface queue;
4) according to pre-switch formation and interface queue, each Business Stream and each interface are set up mapping formation matching relationship;
5) Business Stream handover management server is carried out the Business Stream switching on many interface terminations according to described mapping relations.
Wherein, described user profile comprises interface type.
Wherein, described link circuit condition comprises interface load, available bandwidth and received signal strength indicator.
Wherein, described step 1) in, the interface type of each many interface terminations, interface load, available bandwidth and received signal strength indicator obtain from network terminal by Business Stream handover management server.
Wherein, described link circuit condition also comprises packet loss.
Wherein, described step 1) also comprise following substep:
11) after many interface terminations are connected into the territory, local, initiate registration to Business Stream handover management server, carry user profile in registration message, described user profile comprises priority option, and this priority option represents the priority of the specified services stream that the user is can be in communication process explicit;
12) Business Stream handover management server is incited somebody to action wherein user profile preservation after receiving registration message;
13) many interface terminations periodically send the state updating message to Business Stream handover management server; Carry current user profile in the state updating message;
14) Business Stream handover management server upgrades active user's information according to the state updating message.
Wherein, described communications network system is operated in mobile context lower time, described step 11)～14) in, the Business Stream handover management server that described Business Stream handover management server is the territory, local;
Described step 1) also comprise step 15) when terminal moved on to foreign lands from being connected into the territory, the foreign lands Business Stream handover management server of access was periodically added up current link circuit condition, and send to the Business Stream handover management server in territory, local;
Described step 2)～5), the Business Stream handover management server that described Business Stream handover management server is the territory, local.
Wherein, the total interface of described many interface terminations is all wave point; Perhaps existing wave point, have again wireline interface; Perhaps total interface is all wired.
Wherein, when having wireline interface in described many interface terminations, wireline interface is given virtual received signal strength indicator, and this virtual received signal strength indicator is according to the maximum virtual received signal strength indicator assignment of wave point.
Wherein, described step 4) comprise following substep:
41) if the pre-switch formation is empty, leap to step 5), otherwise, enter step 42);
42) described Business Stream handover management server takes out the head of the queue business from the pre-switch formation, takes out the head of the queue interface from interface queue, and the Business Stream and the interface that take out are set up mapping;
43) if interface queue is empty, enter step 44), otherwise, jump to step 41);
44) each interface is joined the team again according to current comprehensive satisfaction sequence.
Wherein, described step 5) comprise following substep:
51) described Business Stream handover management server is carried out at local terminal and is switched, and downstream service flow is switched on matched interfaces;
52) described Business Stream handover management server sends the Business Stream switching command to terminal, and the switch unit of terminal receives instruction and carries out switching command, completes the switching of uplink service stream.
The present invention also provides a kind of Business Stream handover management server, comprising:
Statistic unit is used for periodically obtaining active user's information and the current link circuit condition of these many interface terminations;
The Business Stream recognition unit is for the service priority of each Business Stream that obtains each many interface terminations;
The switch decision unit is used for setting up respectively judgment matrix according to analytic hierarchy process (AHP), and calculates the comprehensive satisfaction of each interface of these many interface terminations; Wherein, with the general objective of interface synthesis satisfaction as destination layer, with active user's information and the current link circuit condition partial objectives for as rule layer, with each usable interfaces of described many interface terminations possibility as solution layer; Also be used for according to service priority order from high to low, each Business Stream being arranged formation pre-switch formation, according to interface synthesis satisfaction order from high to low, each interface arrangement formed interface queue; According to pre-switch formation and interface queue, each Business Stream and each interface are set up mapping formation matching relationship;
Switch performance element, be used for carrying out on many interface terminations according to described matching relationship Business Stream and switch.
Compared with prior art, the present invention has following technique effect:
1, switch decision of the present invention partly carries out in network side server end self adaptation, and the overhead of user side is very little.
2, the present invention can react the communication performance of current each network interface accurately, and this is all very important for the work quality and the user satisfaction that improve server end.
3, the present invention when guaranteeing each Business Stream QOS, can carry out switch decision to the priority level initializing situation of each Business Stream according to the user, fully takes into account user's demand.
4, the present invention had both supported mobile context, also supported non-moving scene, can be combined neatly and carry out corresponding deployment with existing standard.
Description of drawings
Fig. 1 is the self-adapted service stream switching method flow chart of one embodiment of the invention;
Fig. 2 is that the present invention is applied to the schematic diagram under non-moving scene;
Fig. 3 is that the present invention is applied to the schematic diagram under mobile context;
Fig. 4 is the stream switched system schematic diagram of one embodiment of the invention.
Embodiment
In order to make method of the present invention, technical scheme clearer, below in conjunction with drawings and Examples, a kind of self-adapted service stream switching method of the present invention and system are described in further detail.Should be noted that embodiment described herein only is used for better explaining the present invention, be not intended to limit the present invention.
Embodiment 1
According to embodiments of the invention 1, a kind of self-adapted service stream switching method is provided, its flow process comprises the following steps: with reference to figure 1
Step S100, Business Stream handover management server press some cycles and upgrade the service flow management table.Business Stream handover management server is in conjunction with the service flow management table, for each many interface termination, difference analysis user information and current link circuit condition, namely Business Stream handover management server periodically obtains active user's information and the current link circuit condition of each many interface termination.
Above-mentioned service flow management table list item form is as shown in table 1:
Table 1
| Source address | Destination address | Source port number | The destination slogan | Traffic flow types | Priority | The tunnel call number |
The specifying information of every Business Stream of described service flow management table record.Every corresponding list item of Business Stream, wherein the identification of traffic flow types can be adopted conventional stream recognition method (such as Layer 7 identifications), and the present embodiment does not limit the concrete grammar of stream identification.Traffic flow types can be set to video, audio frequency, text etc., and wherein the tunnel call number represents which bar of the current correspondence of this Business Stream tunnel.
User profile comprises following content:
(1) interface type: interface is wired or wireless;
(2) Interface status: interface can be used or be unavailable;
Current link circuit condition comprises following content:
(1) interface load: the link load of current each interface of reflection user;
(2) available bandwidth: current each interface available bandwidth of reflection user;
(3) received signal strength indicator (RSSI): the signal strength signal intensity of this parameter reflection user current wireless interface;
(4) packet loss: the packet drop of current each interface of reflection.
Step S200, for each many interface termination, described Business Stream handover management server is set up respectively judgment matrix based on analytic hierarchy process (AHP).Described analytic hierarchy process (AHP) (Analytic Hierarchy Process, AHP) be a kind of policy-making thought method, basic thought is that complicated PROBLEM DECOMPOSITION is become some levels and some key elements, compare simply, judge and calculate between each key element, to obtain the weight of different key elements and different alternatives.Due to its simplification and accuracy, be widely used in the every field such as economy, the energy, management.Therefore be fit to very much solve exist in the situation of a plurality of alternatives, draw the decision problem of optimal solution.
Described judgment matrix comprises two kinds, and the first judgment matrix represents that respectively the value of considering is about the mutual comparison of general objective, and the second judgment matrix represents that each network interface is about the respectively mutual comparison of the value of considering;
According to the AHP method, each element a in the first judgment matrix wherein
ijRepresentative is with respect to general objective, the value of considering a
iWith respect to the value of considering a
jRelative Link Importance; The value of considering is the partial objectives in the AHP algorithm.Each element p in the second judgment matrix
ijRepresentative is with respect to the value of considering a, interface p
iWith interface p
jRelatively value, wherein, the judgement yardstick can be by following principle value:
(1) 1: for c, q
iAnd q
jOf equal importance;
(2) 2: for c, q
iCompare q
jBetween of equal importance and important a little;
(3) 3: for c, q
iCompare q
jImportant a little;
(4) 5: for c, q
iCompare q
jImportant;
(5) 7: for c, q
iCompare q
jImportant is many;
(6) 9: for c, q
iCompare q
jDefinitely important.
Such as, if q
iCompare q
jImportant, q
ij=5, otherwise, if q
jCompare q
iImportant, q
ij=1/q
ji=1/5, in like manner, if a
iCompare a
jImportant, a
ij=5, otherwise, if a
jCompare a
iImportant, a
ij=1/a
ji=1/5, in like manner, if p
iCompare p
jImportant, p
ij=5, otherwise, if p
jCompare p
iImportant, p
ij=1/p
ji=1/5.Although only have 1,2,3,5,7,9 several values in above-mentioned value principle, one skilled in the art will readily appreciate that the value that other can be set according to actual needs.
Above-mentioned general objective refers to the communication environment quality of current network interface, and the value of considering refers to current interface type, interface load, available bandwidth, packet loss, RSSI (received signal strength indicator).Table 2 has provided the example of the first judgment matrix value in the present embodiment, but the value of the first judgment matrix is not limited to table 2, and this is that those skilled in the art are understandable.
Table 2
Wherein, A represents interface communication performance, C
1Represent interface type, C
2Represent interface load, C
3Represent available bandwidth, C
4Represent packet loss, C
5Represent RSSI.
Especially, in some cases, can only use interface type, interface load, available bandwidth, four parameters of RSSI as the value of considering.Like this, in step S100, Business Stream handover management server can directly obtain the real-time update of all values of considering from network terminal.And user side only needs to carry out some basic Signalling exchange work (user terminal under mobile context originally also all needs Signalling exchange), also just make beyond user's side communicates by letter normally, can not increase a large amount of expenses because self-adapted service stream switches.
Table 3 has provided in the present embodiment, the structure of the second judgment matrix.But the structure of the second judgment matrix is not limited to table 3, and this is that those skilled in the art are understandable.Such as when interface outnumbers 3, the second judgment matrix also can have more ranks
Table 3
Wherein, C represents the value of considering, P
iRepresent i interface.The second judgment matrix will be set up respectively according to the value of considering respectively.What deserves to be explained is, represent the received signal strength of wave point due to RSSI, so in the structure of the second judgment matrix, for wireline interface is given virtual RSSI attribute, because wireline interface is to carry out transfer of data by the guiding transmission medium, do not relate to signal strength problem, so in the present embodiment, that the virtual RSSI assignment of wireline interface is maximum.Be wireline interface and wave point RSSI relatively in the middle of, think that wireline interface is absolute more important than wave point.
Further, in a kind of preferred version, when C represents interface load, available bandwidth and RSSI, in the second judgment matrix, value is (wherein as follows for element, the unit of account of interface load is KB, and the unit of available bandwidth is KB/S, and the unit of RSSI is dBm):
p
i=p
jThe time, a
ij=1, a
ji=1
0＜p
i-p
j＜5 o'clock, a
ij=2, a
ji=1/2
5＜p
i-p
j＜10 o'clock, a
ij=3, a
ji=1/3
10＜p
i-p
j＜30 o'clock, a
Ij=5, a
ji=1/5
30＜p
i-p
j＜50 o'clock, a
ij=7, a
ji=1/7
50＜p
i-p
jThe time, a
ij=9, a
ji=1/9
When C represents interface type, element value as follows in the second judgment matrix:
If P
iBe wireline interface, P
jBe wave point, a
ij=7, a
ji=1/7.This represents wireline interface P
iThan wave point P
jImportant is many.
When C represents packet loss, element value as follows in the second judgment matrix:
Work as P
i=P
iThe time, a
ij=1, a
ji=1
As 0＜P
i-P
jIn the time of＜2%, a
ij=2, a
ji=1/2
As 2%＜P
i-P
jIn the time of＜5%, a
ij=3, a
ji=1/3
As 5%＜P
i-P
jIn the time of＜30%, a
ij=5, a
ji=1/5
Work as P
i-P
jIn the time of＞30%, a
ij=7, a
ji=1/7
The obtaining value method of above-mentioned the second judgment matrix element is only a kind of example, easily understands, and the present invention is not limited to above-mentioned value mode.
Step S300 calculates relative weighting.
According to the first judgment matrix, calculate i the value of considering about the relative weighting w of general objective
i, according to the second judgment matrix, calculate l interface about the relative weighting w of the current value of considering
l, wherein, w
iAnd w
lCalculating can adopt the root method, that is:
Wherein, k represents the number of the value of considering
Step S400 carries out normalized to the required weight of step S300, that is:
Step S500 calculates the comprehensive satisfaction of each interface.
Comprehensive satisfaction can be according to formula
Calculate V
nThe comprehensive satisfaction that represents n interface, wherein w
jRepresent that j the value of considering is about the relative weighting of general objective, w
njRepresent that n interface is about the relative weighting of j the value of considering, w
jAnd w
njCalculating and the normalizing method with step S300, step S400.
Step S600 forms pre-switch formation with Business Stream according to priority according to the service flow management table, and the Business Stream that wherein service priority is the highest is head of the queue.According to the interface synthesis satisfaction, each interface arrangement is formed interface queue, wherein, the interface that comprehensive satisfaction is the highest is head of the queue.
Step S700 if the pre-switch formation is empty, leaps to step S1100, otherwise, enter step S800.
Step S800, described Business Stream handover management server takes out the head of the queue business from the pre-switch formation, take out the head of the queue interface from interface queue, and this Business Stream and interface are set up mapping.
Step S900 if interface queue is empty, enters step S1000, otherwise, jump to step S700;
Step S1000 joins the team interface again according to current comprehensive satisfaction height, enters step S700;
Step S1100, described Business Stream handover management server carry out to switch according to matching relationship, handoff procedure in two steps:
In the 1. step, described Business Stream handover management server is carried out at local terminal and is switched, and downstream service flow is switched on matched interfaces; Above-mentioned downstream service flow refers to the Business Stream from Business Stream handover management server to the transmission of many interface terminations.
In the 2. step, described Business Stream handover management server sends the Business Stream switching command to terminal, and the switch unit of terminal receives instruction and also automatically performs switching command, completes the switching of uplink service stream; Above-mentioned uplink service stream refers to from many interface terminations to the Business Stream of Business Stream handover management server transmission.
Wherein, the handover command messages form can be adjusted according to different switching execution modes.Such as, switch to implement to be based on that iptables strategy under the NETFILTER framework realizes, handover command messages can be used for depositing the iptables order, and the present embodiment does not limit the specific definition of switching command form.
Step S1200, algorithm finishes.
In the present embodiment, self-adapted service stream switches (being step 200～500) and periodically automatically carries out.The present embodiment can be applied to following several situation:
(1) current total interface state is constant, rebulids the matching relationship of Business Stream and interface;
(2) current certain interface becomes unavailablely, and the stream on it is distributed on other usable interfaces;
(3) current certain interface becomes availablely, and the part stream on other interfaces is distributed on this interface.
Embodiment 2
According to embodiments of the invention 2, another kind of self-adapted service stream switching method is provided, this self-adapted service stream handover scheme is operated under non-moving scene.
As shown in Figure 2, under the non-moving scene of the present embodiment, three nodes being arranged in the territory, local, is respectively node 1, node 2, node 3, represents respectively many interface terminations of three types: node 1 represents that total interface is all wireless many interface terminations; Node 2 represents existing wave point, and many interface terminations of wireline interface are arranged again; Node 3 represents that total interface is all wired many interface terminations.
After terminal is connected into the territory, local, initiate registration to Business Stream handover management server, the registration message form is as shown in table 4:
Table 4
| Bind address | The temporary address | Interface type | Interface status | Life span | Priority option |
Wherein, the bind address address prefix that to be the user provide according to Business Stream handover management server is with the Termination ID combination producing; The temporary address is the address that each interface of terminal configures automatically according to prefix; Interface type illustrates that this interface is wired or wireless; Interface status illustrates that this interface is current available or unavailable; Life span represents the valid expiration date of this log-on message; Priority option represents the priority of the appointment stream that the user is can be in communication process explicit.
After Business Stream handover management server receives user profile, it is kept in the subscriber information management table, and carries out accreditation verification to terminal transmission response message.The response message form is as shown in table 5 below.
Table 5
| Bind address | The temporary address | Interface type | Interface status | Life span | State |
Wherein, the same registration message of the first five field meaning repeats no more herein.Mode field represents user's registration message or the success or not of state updating message, and 0 represents that unsuccessfully, 1 represents successfully.
In above-mentioned subscriber information management table, an interface of each list item counterpart terminal, structure is as shown in table 6.
Table 6
| Bind address | The temporary address | Interface type | Interface status | Interface ID |
Wherein, front four same registration messages of field meaning repeat no more herein.Interface ID is used for an interface of marking terminal, can be a random number, but will guarantee its uniqueness.Certainly, the present invention does not limit the specific definition mode of interface ID, and interface ID also can define by other means.For example, with MAC (the Media Access Control) address of this interface, need to add the MAC Address field in user's registration message at this moment, shown in new registration message form shfft 7.
Table 7
| Bind address | The temporary address | Interface type | Interface status | Life span | Priority option | MAC Address |
After above-mentioned registration process was completed, terminal just can communicate by standard I P Routing Protocol and other nodes.Wherein, carry out interacting message with Business Stream handover management server to terminal periodic, be specifically related to following several message:
(1) state updating message: terminal periodic current each interface message is sent to the Business Stream switching server.The same registration message of its form repeats no more herein.
(2) solicited status updating message: when user profile is about to expire life cycle, Business Stream handover management server can send the solicited status updating message to the user, and the same response message of message format only needs mode field is set to 0;
(3) handover command messages: Business Stream handover management server can send to terminal to carry out by handover command messages handoff decision result, message format will arrange according to different switching execution modes, such as, switching enforcement is to carry out by the NETFILTER framework, and message content can comprise concrete iptables order.Easily understand, in the present invention, handover command messages is not limited to specific implementation.
When carrying out interacting message with Business Stream handover management server to terminal periodic, Business Stream handover management server can be periodically based on the AHP algorithm, go out the comprehensive satisfaction of each interface according to user profile, link communication Mass Calculation, then draw Business Stream with the matching relationship of interface in conjunction with Business Stream priority.Comprehensive satisfaction computational process is in full accord with step 200～step 500 in embodiment 1, repeats no more herein.
Embodiment 3
According to embodiments of the invention 3, another kind of self-adapted service stream switching method is provided, this self-adapted service stream handover scheme is operated under mobile context.
As shown in Figure 3, the service flow switching method of the present embodiment can be operated in multiple mobile context, such as mobile IP v 6 (RFC 3775), mobile IPv 4 (RFC 3344), proxy mobile IPv 6 (RFC 5213) and related expanding mobility management protocol etc.Dispose accordingly according to different mobile contexts, such as for mobile IP v 6, the corresponding units of Business Stream handover management server can be deployed in HA (home agent), and the corresponding units of many interface terminations is deployed in MN (mobile node).
In Fig. 3, shown node 1, node 2, node 3 represent respectively many interface terminations of three types: node 1 represents that total interface is all wireless many interface terminations; Node 2 represents existing wave point, and many interface terminations of wireline interface are arranged again; Node 3 represents that total interface is all wired many interface terminations.
In mobile context, when many interface terminations enter in certain mobile context (such as mobile IP v 6, mobile IPv 4, proxy mobile IPv 6), the interacting message of standard, also need to carry out following work under carrying out this scene:
(1) many interface terminations need to be carried out the interface registration and periodically carry out state and upgrade to local Business Stream handover management server, and the message meaning is with described in non-moving scene;
(2) when terminal moves on to foreign lands from being connected into the territory, the foreign lands Business Stream handover management server of access needs periodic statistics link communication conditions, and sends to the Business Stream handover management server in territory, local, and the link-state message form is as shown in table 8.
Table 8
| Bind address | The temporary address | Interface load | Available bandwidth | RSSI (received signal strength indicator) |
(3) territory, local Business Stream handover management server periodically based on the AHP algorithm, goes out the comprehensive satisfaction of each interface according to user profile, link communication Mass Calculation, then draws the Proper Match relation of Business Stream and interface in conjunction with Business Stream priority.Comprehensive satisfaction computational process is described with step 200～step 500 in embodiment 1, repeats no more herein;
(4) territory, local Business Stream handover management server sends to many interface terminations by handover command messages with handoff decision result.
It is pointed out that above-mentioned registration message, state updating message, link-quality status message, handover command messages can realize its function by the standard message of expanding under corresponding mobile context, also can use the undefined message format of non-moving scene.Such as, in mobile IP v 6, registration message and state updating message can realize by expansion BU (Binding Update, Binding Update) messages option field; Handover command messages can realize by expansion BRR (Binding Refresh Request, Binding Update request) messages option field.Easily understand, above-mentioned various message are not limited to above-mentioned specific implementation.
Embodiment 4
The present embodiment provides a kind of stream switched system, and this stream switched system structure as shown in Figure 4.
Described stream switched system comprises: many interface terminations 100, Business Stream handover management server 200.Wherein, many interface terminations 100 comprise three types: be wireline interface 110 entirely, part wireline interface, part wave point 120 are wave point 130 entirely.
Many interface terminations 100 comprise registration and bind unit 101, switch unit 102.Wherein, registration binding unit 101 is used for obtaining the current interface message of the machine, comprise interface type (wired or wireless), Interface status (available or unavailable), bind address, temporary address, wherein bind address is the address prefix that provides according to Business Stream handover management server with the machine ID combination producing, and the temporary address is the prefix that provides according to the Business Stream handover management server address of configuration automatically; Switch unit 102 is used for the uplink service stream on this interface being switched to other interfaces getting on interface occurring disabled the time, and, also be used for receiving the instruction of Business Stream handover management servers switch, carry out and switch.
Business Stream handover management server 200 comprises registration statistic unit 201, Business Stream recognition unit 202, switch decision unit 203, switches performance element 204.Wherein, registration statistic unit 201 is used for receiving user's registration message, and message is distinguished by the user put into the subscriber information management table, also is used for periodically obtaining active user's information and the current link circuit condition of these many interface terminations; Business Stream recognition unit 202 is used for Business Stream is distinguished by type, can adopt more conventional stream recognition method (such as Layer 7 identifications), type can be set to audio frequency, video, text, other, and the corresponding dissimilar respective priority that arranges; Switch decision unit 203 is used for according to user profile, current link circuit condition, Business Stream priority and makes switchover policy in conjunction with the service flow management table, wherein adopt analytic hierarchy process (AHP) (the Analytic Hierarchy Process in Multi-Objective Decision Theory, AHP) calculate the comprehensive satisfaction of heterogeneous networks interface, the AHP algorithm flow repeats no more with described in embodiment 1 herein; Switch performance element 204 and be used for according to handoff decision result, carry out and switch.Switch in two steps: the first step, Business Stream handover management server end 200 is carried out the switching of downstream service flow; Second step sends switching command to many interface terminations 100, carries out the switching of uplink service stream by it.
Compared with prior art, the present invention has following technique effect:
1, switch decision of the present invention partly carries out in network side server end self adaptation, and user side only needs to carry out some basic Signalling exchange work (and the user terminal under mobile context originally also all needs Signalling exchange), also just make beyond user's side communicates by letter normally few additional work of trying one's best.
2, the AHP method is simple and easy and accurate due to it, to multifactor, many standards, multivariant overall merit and trend prediction and effective, is widely used in the various fields such as economy, management, the energy, not yet is employed but switch the field at Business Stream.The present invention considers its accuracy and simplification, the AHP algorithm is used for to the switch decision process, can reduce in a large number time consumption and the power consumption of server end when carrying out switch decision, simultaneously, 5 values of considering in the present invention all are convenient to obtain (can realize by existing user's space/kernel spacing communication mechanism), and can react accurately the communication performance of current each network interface.This is all very important for the work quality and the user satisfaction that improve server end.
3, the present invention is when guaranteeing each Business Stream QOS, can carry out switch decision to the priority level initializing situation of each Business Stream according to the user, thereby realize that suitably carrying out otch according to the current quality of service requirement degree to each Business Stream of user distributes, and fully takes into account user's demand.
4, the present invention had both supported mobile context, also support non-moving scene, can be combined neatly and carry out corresponding deployment with existing standard mobile IPv 4 (RFC 3344), mobile IP v 6 (RFC 3375), proxy mobile IPv 6 (RFC 5213) agreement and related expanding mobility management protocol and non-moving management agreement.Although described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, and the claim of application documents of the present invention comprises these distortion and variation.
Claims (12)
1. self-adapted service stream switching method that is used for communications network system, described communications network system comprises Business Stream handover management server and many interface terminations, described self-adapted service stream switching method comprises:
For each many interface termination, carry out the following step:
1) described Business Stream handover management server periodically obtains active user's information and the current link circuit condition of these many interface terminations;
2) described Business Stream handover management server is set up respectively judgment matrix based on analytic hierarchy process (AHP), and calculates the comprehensive satisfaction of each interface of these many interface terminations; Wherein, with the general objective of interface synthesis satisfaction as destination layer, with active user's information and the current link circuit condition partial objectives for as rule layer, with each usable interfaces of described many interface terminations possibility as solution layer;
3) according to service priority order from high to low, each Business Stream is arranged formation pre-switch formation, according to interface synthesis satisfaction order from high to low, each interface arrangement is formed interface queue;
4) according to pre-switch formation and interface queue, each Business Stream and each interface are set up mapping formation matching relationship;
5) Business Stream handover management server is carried out the Business Stream switching on many interface terminations according to described matching relationship.
2. self-adapted service stream switching method according to claim 1, is characterized in that, described user profile comprises interface type, and described link circuit condition comprises interface load, available bandwidth and received signal strength indicator.
3. self-adapted service stream switching method according to claim 2, it is characterized in that, in described step 1), the interface type of each many interface terminations, interface load, available bandwidth and received signal strength indicator obtain from network terminal by Business Stream handover management server.
4. self-adapted service stream switching method according to claim 3, is characterized in that, described link circuit condition also comprises packet loss.
5. self-adapted service stream switching method according to claim 1, is characterized in that, described step 1) also comprises following substep:
11) after many interface terminations are connected into the territory, local, initiate registration to Business Stream handover management server, carry user profile in registration message, described user profile comprises priority option, and this priority option represents the priority of the specified services stream that the user is can be in communication process explicit;
12) Business Stream handover management server is incited somebody to action wherein user profile preservation after receiving registration message;
13) many interface terminations periodically send the state updating message to Business Stream handover management server; Carry current user profile in the state updating message;
14) Business Stream handover management server upgrades active user's information according to the state updating message.
6. self-adapted service stream switching method according to claim 5, it is characterized in that, described communications network system is operated in mobile context lower time, described step 11) ~ 14) in, the Business Stream handover management server that described Business Stream handover management server is the territory, local;
Described step 1) comprises that also step 15) works as described many interface terminations when moving on to foreign lands from being connected into the territory, and the foreign lands Business Stream handover management server of access is periodically added up current link circuit condition, and sends to the Business Stream handover management server in territory, local;
Described step 2) ~ 5), the Business Stream handover management server that described Business Stream handover management server is the territory, local.
7. self-adapted service stream switching method according to claim 2, is characterized in that, the total interface of described many interface terminations is all wave point; Perhaps existing wave point, have again wireline interface; Perhaps total interface is all wireline interface.
8. self-adapted service stream switching method according to claim 7, it is characterized in that, when having wireline interface in described many interface terminations, wireline interface is given virtual received signal strength indicator, and this virtual received signal strength indicator is according to the maximum virtual received signal strength indicator assignment of wave point.
9. self-adapted service stream switching method according to claim 4, is characterized in that, described step 2) in: when subhead is designated as interface load, available bandwidth or received signal strength indicator, each the element a in analytic hierarchy process (AHP) in the second judgment matrix
ijRepresentative is with respect to the value of considering a, the relatively value of the interface of the capable and j row representative of i, and element value as follows in described the second judgment matrix:
p
i=p
jThe time, a
ij=1, a
ji=1
0＜p
i-p
j＜5 o'clock, a
ij=2, a
ji=1/2
5＜p
i-p
j＜10 o'clock, a
ij=3, a
ji=1/3
10＜p
i-p
j＜30 o'clock, a
ij=5, a
ji=1/5
30＜p
i-p
j＜50 o'clock, a
ij=7, a
ji=1/7
50＜p
i-p
jThe time, a
ij=9, a
ji=1/9
Wherein, the unit of interface load is KB, and the unit of available bandwidth is KB/S, and the unit of received signal strength indicator is dBm; p
iAnd p
jIt is respectively the value of interface load, available bandwidth or received signal strength indicator of the interface of the capable and j of described the second judgment matrix i row representative; a
ijThe value of the capable j column element of described the second judgment matrix i, a
jiIt is the value of the capable i column element of described the second judgment matrix j;
When subhead is designated as interface type, element value as follows in the second judgment matrix:
As P
iBe wireline interface, P
jBe wave point, a
ij=7, a
ji=1/7;
a
ijThe value of the capable j column element of described the second judgment matrix i, a
jiIt is the value of the capable i column element of described the second judgment matrix j;
When subhead is designated as packet loss, element value as follows in described the second judgment matrix:
Work as P
i=P
jThe time, a
ij=1, a
ji=1
As 0＜P
i– P
jIn the time of＜2%, a
ij=2, a
ji=1/2
As 2%＜P
i– P
jIn the time of＜5%, a
ij=3, a
ji=1/3
As 5%＜P
i– P
jIn the time of＜30%, a
ij=5, a
ij=1/5
Work as P
i– P
jIn the time of＞30%, a
ij=7, a
ji=1/7
Wherein, p
iAnd p
jIt is respectively the value of packet loss of the interface of the capable and j of described the second judgment matrix i row representative; a
ijThe value of the capable j column element of described the second judgment matrix i, a
jiIt is the value of the capable i column element of described the second judgment matrix j.
10. self-adapted service stream switching method according to claim 1, is characterized in that, described step 4) comprises following substep:
41) if the pre-switch formation is empty, leap to step 5), otherwise, enter step 42);
42) described Business Stream handover management server takes out the head of the queue business from the pre-switch formation, takes out the head of the queue interface from interface queue, and the business and the interface that take out are set up mapping;
43) if interface queue is empty, enter step 44), otherwise, jump to step 41);
44) each interface is joined the team again according to current comprehensive satisfaction sequence.
11. self-adapted service stream switching method according to claim 1 is characterized in that, described step 5) comprises following substep:
51) described Business Stream handover management server is carried out at local terminal and is switched, and downstream service flow is switched on matched interfaces;
52) described Business Stream handover management server sends the Business Stream switching command to described many interface terminations, and the switch unit of described many interface terminations receives instruction and carries out switching command, completes the switching of uplink service stream.
12. a Business Stream handover management server is characterized in that, comprising:
Statistic unit is used for periodically obtaining active user's information and the current link circuit condition of each many interface terminations;
The Business Stream recognition unit is for the service priority of each Business Stream that obtains each many interface terminations;
The switch decision unit is used for setting up respectively judgment matrix according to analytic hierarchy process (AHP), and calculates the comprehensive satisfaction of each interface of these many interface terminations; Wherein, with the general objective of interface synthesis satisfaction as destination layer, with active user's information and the current link circuit condition partial objectives for as rule layer, with each usable interfaces of described many interface terminations possibility as solution layer; Also be used for according to service priority order from high to low, each Business Stream being arranged formation pre-switch formation, according to interface synthesis satisfaction order from high to low, each interface arrangement formed interface queue; According to pre-switch formation and interface queue, each Business Stream and each interface are set up mapping formation matching relationship;
Switch performance element, be used for carrying out on each many interface terminations according to described matching relationship Business Stream and switch.
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| CN103052125B (en) * | 2011-10-13 | 2018-03-23 | 广州市瑞雅通信技术有限公司 | Flow migration method and device |
| CN103532909B (en) * | 2012-07-04 | 2019-01-22 | 中兴通讯股份有限公司 | Multi-stream service concurrent transmission method, subsystem, system and multi-interface terminal |
| JP6156905B2 (en) * | 2012-09-28 | 2017-07-05 | 国立研究開発法人情報通信研究機構 | Mobile terminal having virtual received signal strength indicator display function |
| CN104283976B (en) * | 2013-07-10 | 2019-12-24 | 中兴通讯股份有限公司 | Switching method of network interface and access equipment |
| CN106681696B (en) * | 2016-12-12 | 2019-05-14 | 中国航空工业集团公司西安航空计算技术研究所 | A kind of large-scale parallel program optimization arrangement method |
| CN108271224A (en) * | 2017-01-03 | 2018-07-10 | 中兴通讯股份有限公司 | Cell switching method and device |
| CN108259375B (en) * | 2018-02-27 | 2021-11-26 | 苏州盛科通信股份有限公司 | Method and device for realizing dynamic load sharing of queue level |
| CN108880947B (en) * | 2018-08-09 | 2021-03-05 | 锐捷网络股份有限公司 | Method and device for testing concurrency of multiple service requests |
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