CN102497658A - Multimode switching method for heterogeneous network - Google Patents
Multimode switching method for heterogeneous network Download PDFInfo
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- CN102497658A CN102497658A CN2011104348284A CN201110434828A CN102497658A CN 102497658 A CN102497658 A CN 102497658A CN 2011104348284 A CN2011104348284 A CN 2011104348284A CN 201110434828 A CN201110434828 A CN 201110434828A CN 102497658 A CN102497658 A CN 102497658A
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Abstract
The invention discloses a multimode switching method for a heterogeneous network. The method mainly comprises the following steps of: determining a real-time service and a non-real-time service in each communication mode in the heterogeneous network, and determining priority among a plurality of communication modes in the heterogeneous network; setting respective packet loss threshold values of the real-time service and the non-real-time service in each communication mode; acquiring respective packet losses of the real-time service and the non-real-time service in each communication mode; and comparing the obtained packet losses and corresponding threshold values according to a sequence ranging from high propriety to low priority, and finding a current most proper access network for switching. Due to the adoption of the method, the current communication performance is sensed through a communication service, an optimal communication mode can be selected through a decision, a network resource can be effectively used by a user, and interrupt communication capability resistance is enhanced.
Description
Technical field
The invention belongs to network communications technology field, be specifically related to the multi-mode switching method of heterogeneous network.
Background technology
Because 3G and wifi develop rapidly, a lot of places are all covered by 3G and wifi network simultaneously, and corresponding, most portable terminal all has 3G and wifi module simultaneously.In the time of in a portable terminal is in 3G and wifi while region covered; Can permanent preferential select the wifi network according to conventional method, this is that communication quality is better than 3G because the bandwidth of wifi is far superior to the bandwidth of 3G in the ordinary course of things; But under special circumstances; The communication quality of wifi may drop to very low, even can be lower than the communication quality under the 3G situation, and at this moment portable terminal still can be selected the wifi network.To this situation, can better use current Internet resources in order to make the user, how between 3G and wifi, to do the most appropriate selection, become a problem that presses for solution.
Present stage; Research to the switching of portable terminal in 3G and wifi network's coverage area is few; Main research is concentrated both ways; A kind of be the terminal through measuring the signal strength signal intensity of the broadcast packet in the Radio Access Network, confirm the channel condition of corresponding network, select to switch according to the variation of signal strength signal intensity then; A kind of in addition is through contrasting the current load condition of each Radio Access Network, when the network congestion degree that uses becomes serious, just switching.These two kinds of determination strategy all have the certain one-sidedness and the shortcoming of underaction, and they have only considered the access situation of terminal to access point, have ignored the network condition of access point to service server.When access point to the network congestion of service server, and the signal strength signal intensity of access point self and load be not when changing, these two kinds of strategies can not perceive the real change situation of communication network, portable terminal just can't be made switching judging timely.
Summary of the invention
The objective of the invention is to have proposed a kind of multi-mode switching method of heterogeneous network in order to solve the above-mentioned defective that existing method exists when switching to the portable terminal in the heterogeneous network.
Technical scheme of the present invention is: a kind of multi-mode switching method of heterogeneous network specifically comprises the steps:
Step 1 is confirmed in the heterogeneous network real time business and non-real-time service under every kind of communication pattern, and said real time business is the business that needs real time data mutual, and said non-real-time service is the business of visit without real time reaction; And the priority between real time business and the non-real-time service under the plurality of communication schemes in definite heterogeneous network;
Step 2 is set real time business and non-real-time service packet loss threshold value separately under every kind of communication pattern;
Step 3 is obtained real time business and non-real-time service packet loss separately under every kind of communication pattern;
Step 4, according to priority order from high to low, the contrast of the packet loss that step 3 the is obtained threshold value corresponding with it finds the network of current the most suitable access to switch.
Beneficial effect of the present invention: method of the present invention is based on professional perception; The packet loss of access service can reflect the quality of user communication quality, and the big more explanation network quality of packet loss is poor more, thus the present invention with the packet loss of access service as switching foundation; Obtain packet loss through collection; Clear, comprehensively know that the terminal arrives the network quality of the whole communication process of service server, make suitable switching judging decision-making, reach the purpose of anti-communication disruption.
Description of drawings
Fig. 1 is the schematic flow sheet of the inventive method.
Fig. 2 is the network topological diagram of 3G/wifi coexistence.
Fig. 3 is that originate mode is the bimodulus switching flow of wifi.
Fig. 4 is that originate mode is the bimodulus switching flow of 3G.
Fig. 5 is the network topological diagram of 3G, WiMAX, wifi coexistence.
Fig. 6 is that originate mode is the three cross cutting change of current journeys of wifi.
Fig. 7 is that originate mode is the three cross cutting change of current journeys of WiMAX.
Fig. 8 is that originate mode is the three cross cutting change of current journeys of 3G.
Embodiment
Below in conjunction with accompanying drawing and concrete embodiment the present invention is done further explanation:
The multi-mode switching method of heterogeneous network of the present invention, schematic flow sheet is as shown in Figure 1, specifically comprises the steps:
Step 1 is confirmed in the heterogeneous network real time business and non-real-time service under every kind of communication pattern, and said real time business is the business that needs real time data mutual, and said non-real-time service is the business of visit without real time reaction; And the priority between real time business and the non-real-time service under the plurality of communication schemes in definite heterogeneous network.Generally speaking, the priority of real time business combines the concrete condition of communication pattern in the heterogeneous network again greater than the priority of non-real-time service, and then can confirm in the heterogeneous network priority between the real time business and non-real-time service under the plurality of communication schemes.
Step 2 is set real time business and the packet loss threshold value of non-real-time service under every kind of communication pattern.Real time business under the comparison between the plurality of communication schemes for ease, every kind of communication pattern is all identical with the threshold value of non-real-time service.Test through reality; Packet loss is bigger to the communication quality influence of real time business; General packet loss was at 5% o'clock, and communication quality can be accepted, but when packet loss arrives 10%; Communication quality can't make us accepting, so packet loss threshold value that can real time business is set to a median 8% between them.For non-real-time service, stronger to the tolerance of packet loss, but when packet loss greater than 20% the time, the user can obviously feel the reduction of communication quality, so packet loss threshold value that can non-real-time service is set to 15%.
Step 3 is obtained real time business and non-real-time service packet loss separately under every kind of communication pattern.Here, can obtain packet loss through the routine techniques means.
Step 4, according to priority order from high to low, the contrast of the packet loss that step 3 the is obtained threshold value corresponding with it finds the network of current the most suitable access to switch.
Specify through two embodiment below:
Implement one---the switching of wifi network and 3G network:
As shown in Figure 2, the portable terminal with wifi and 3G module is in the network of a wifi and 3G coexistence, through the business on the some communication pattern accesses network service servers among wifi or the 3G.In the access service server, this professional packet loss can monitored and obtain to portable terminal in real time.
Fig. 3 and Fig. 4 have shown the basic procedure of selection strategy of the present invention, and portable terminal has two kinds of initial conditions, are in the switching under the wifi pattern and are in the switching under the 3G pattern.
At first, 4 kinds of basic communication services of definition:
Wifi-real time business: through the multimedia service of wifi access to netwoks, for example video, voice etc.;
Wifi-non-real-time service: through the business without real time reaction of wifi access to netwoks, for example background and session service etc.;
3G-real time business: through the multimedia service of 3G network visit, for example video, voice etc.;
The 3G-non-real-time service: through 3G network, the business without real time reaction of visit, for example background and session service etc.;
Set wifi-in real time and the packet loss threshold value η of 3G-real time business
1, the packet loss threshold value η of setting wifi-non real-time and 3G-non-real-time service
2Here, η
1Value get 8%, η
2Value get 15%.
Obtain wifi-in real time, wifi-non real-time, 3G-in real time, the packet loss of four kinds of business of 3G-non real-time, be respectively k
W1, k
W2, k
G1, k
G2
The threshold value that the packet loss that obtains is corresponding with it compares, according to wifi-in real time＞3G-in real time＞the non real-time priority policy of wifi-non real-time＞3G-compares switching.
Detailed process is following:
When portable terminal is under the wifi pattern, as shown in Figure 3, the practical implementation step is following:
Step 111: portable terminal uses wifi mode access service server, obtains the packet loss k of mobile terminal accessing real time business
W1Packet loss k with the visit non-real-time service
W2
Step 112: the packet loss k that portable terminal will obtain from step 111
W1Threshold value η with the wifi-real time business
1Compare, if k
W1≤η
1, portable terminal continues through the wifi accesses network professional, does not carry out mode switch; If k
W1＞η
1, then forward step 113 to.
Step 113: portable terminal starts the 3G communication pattern temporarily, uses 3G mode access service server, and obtains the packet loss k of mobile terminal accessing real time business
G1Packet loss k with the visit non-real-time service
G2
Step 114: the packet loss k that portable terminal will obtain from step 113
G1Threshold value η with the 3G-real time business
1Compare, if k
G1≤η
1, portable terminal will be confirmed to switch, with 3G mode access service server; If k
G1＞η
1, then forward step 115 to.
Step 115: portable terminal is with the packet loss k of wifi-non-real-time service
W2With its threshold value η
2Compare.If k
W2≤η
2, portable terminal will switch back original wifi pattern, and confirm with wifi mode access service server; If k
W2＞η
2, then forward step 116 to.
Step 116: portable terminal is with the packet loss k of 3G-non-real-time service
G2With its threshold value η
2Compare.If k
G2≤η
2, portable terminal will be confirmed to switch, with 3G mode access service server; If k
G2＞η
2The wifi pattern that the portable terminal switchback is original, and the declaration all-network is congested.
When portable terminal is in 3G pattern following time, as shown in Figure 4, the practical implementation step is following:
Step 121: portable terminal uses 3G network access service server, and obtains the packet loss k of mobile terminal accessing real time business
G1Packet loss k with the visit non-real-time service
G2
Step 122: the packet loss k that portable terminal will obtain from step 121
G1Threshold value η with the 3G-real time business
1Compare, if k
G1≤η
1, portable terminal will keep present mode constant, continue with 3G mode access service server; If k
G1＞η
1, then forward step 123 to.
Step 123: portable terminal will interrupt, and start the wifi communication pattern temporarily, use wifi module accesses service server, and obtain the packet loss k of mobile terminal accessing real time business
W1Packet loss k with the visit non-real-time service
W2
Step 124: the packet loss k that portable terminal will obtain from step 123
W1Threshold value η with the wifi-real time business
1Compare, if k
W1≤η
1, portable terminal will be confirmed to switch, with wifi mode access service server; If k
W1＞η
1, then forward step 125 to.
Step 125: portable terminal is with the packet loss k of wifi-non-real-time service
W2With its threshold value η
2Compare.If k
W2≤η
2, portable terminal will confirm to switch to the wifi pattern, with wifi module accesses service server; If k
W2＞η
2, then forward step 126 to.
Step 126: portable terminal is with the packet loss k of 3G-non-real-time service
G2With its threshold value η
2Compare.If k
G2≤η
2, portable terminal will switch back the 3G pattern, with 3G mode access service server; If k
G2＞η
2The 3G pattern that the portable terminal switchback is original, and the declaration all-network is congested.
Implement two---the switching between wifi network, WiMAX network and the 3G network:
The WiMAX full name is that worldwide interoperability for microwave inserts; Be based on a wireless access wide band technology of IEEE 802.16 standards towards metropolitan area network (WMAN); Can provide towards the high speed of the Internet and connect; Data transmission distance can reach 50km farthest, and along with WiMAX progressively realizes the mobile of broadband services, it will become the important component part of following heterogeneous network.
As shown in Figure 5; Portable terminal with wifi, WiMAX, 3G module is in the network of a wifi, WiMAX and 3G coexistence; Through the business on the some communication pattern accesses network service servers among wifi, WiMAX or the 3G; In the access service server, this professional packet loss can monitored and obtain to portable terminal in real time.
Fig. 6, Fig. 7 and Fig. 8 have shown the basic procedure of the selection strategy of this execution mode, and portable terminal has three kinds of initial conditions, are in switching under the wifi pattern, are in the switching under the WiMAX pattern and are in the switching under the 3G pattern.
At first, 6 kinds of basic communication services of definition:
Wifi-real time business: through the multimedia service of wifi access to netwoks, for example video, voice etc.;
Wifi-non-real-time service: through the business without real time reaction of wifi access to netwoks, for example background and session service etc.;
WiMAX-real time business: through the multimedia service of WiMAX access to netwoks, for example video, voice etc.;
WiMAX-non-real-time service: through the business without real time reaction of WiMAX access to netwoks, for example background and session service etc.;
3G-real time business: through the multimedia service of 3G network visit, for example video, voice etc.;
3G-non-real-time service: through the business without real time reaction of 3G network visit, for example background and session service etc.;
Setting wifi-is real-time, WiMAX-real-time and the packet loss threshold value η of 3G-real time business
1, the packet loss threshold value η of setting wifi-non real-time, WiMAX-non real-time and 3G-non-real-time service
2Here, η
1Value get 8%, η
2Value get 15%.
Obtain wifi-in real time, wifi-non real-time, WiMAX-in real time, WiMAX-non real-time, 3G-in real time, the packet loss of four kinds of business of 3G-non real-time, be respectively k
W1, k
W2, k
M1, k
M2, k
G1, k
G2
The threshold value that the packet loss that obtains is corresponding with it compares, according to wifi-in real time＞WiMAX-in real time＞3G-in real time＞wifi-non real-time＞non real-time priority policy of WiMAX-non real-time＞3G-compares switching.
Detailed process is following:
When portable terminal is under the wifi pattern, as shown in Figure 6, the practical implementation step is following:
Step 211: portable terminal uses wifi mode access service server, obtains the packet loss k of mobile terminal accessing real time business
W1Packet loss k with the visit non-real-time service
W2
Step 212: the packet loss k that portable terminal will obtain from step 211
W1Threshold value η with the wifi-real time business
1Compare, if k
W1≤η
1, portable terminal continues through the wifi accesses network professional, does not carry out mode switch; If k
W1＞η
1, then forward step 213 to.
Step 213: portable terminal starts the WiMAX communication pattern temporarily, uses WiMAX mode access service server, and obtains the packet loss k of terminal access real time business
M1Packet loss k with the visit non-real-time service
M2
Step 214: the packet loss k that portable terminal will obtain from step 213
M1Threshold value η with the WiMAX-real time business
1Compare, if k
M1≤η
1, portable terminal will be confirmed to switch, with WiMAX mode access service server; If k
M1＞η
1, then forward step 215 to.
Step 215: portable terminal starts the 3G communication pattern temporarily, uses 3G mode access service server, and obtains the packet loss k of mobile terminal accessing real time business
G1Packet loss k with the visit non-real-time service
G2
Step 216: the packet loss k that portable terminal will obtain from step 215
G1Threshold value η with the 3G-real time business
1Compare, if k
G1≤η
1, portable terminal will be confirmed to switch, with 3G mode access service server; If k
G1＞η
1, then forward step 217 to.
Step 217: portable terminal is with the packet loss k of wifi-non-real-time service
W2With its threshold value η
2Compare.If k
W2≤η
2, portable terminal will switch back original wifi pattern, and confirm with wifi mode access service server; If k
W2＞η
2, then forward step 218 to.
Step 218: portable terminal is with the packet loss k of WiMAX-non-real-time service
M2With its threshold value η
2Compare.If k
M2≤η
2, portable terminal will switch to the WiMAX pattern, with WiMAX mode access service server; If k
M2＞η
2, then forward step 219 to.
Step 219: portable terminal is with the packet loss k of 3G-non-real-time service
G2With its threshold value η
2Compare.If k
G2≤η
2, portable terminal will be confirmed to switch, with 3G mode access service server; If k
G2＞η
2The wifi pattern that the portable terminal switchback is original, and the declaration all-network is congested.
When portable terminal is under the WiMAX pattern, as shown in Figure 7, concrete implementation step is following:
Step 221: portable terminal uses WiMAX mode access service server, obtains the packet loss k of mobile terminal accessing real time business
M1Packet loss k with the visit non-real-time service
M2
Step 222: the packet loss k that portable terminal will obtain from step 221
M1Threshold value η with the wifi-real time business
1Compare, if k
M1≤η
1, portable terminal continues through the WiMAX accesses network professional, does not carry out mode switch; If k
M1＞η
1, then forward step 223 to.
Step 223: portable terminal starts the wifi communication pattern temporarily, uses wifi mode access service server, and obtains the packet loss k of terminal access real time business
W1Packet loss k with the visit non-real-time service
W2
Step 224: the packet loss k that portable terminal will obtain from step 223
W1Threshold value η with the wifi-real time business
1Compare, if k
W1≤η
1, portable terminal will be confirmed to switch, with wifi mode access service server; If k
W1＞η
1, then forward step 225 to.
Step 225: portable terminal starts the 3G communication pattern temporarily, uses 3G mode access service server, and obtains the packet loss k of mobile terminal accessing real time business
G1Packet loss k with the visit non-real-time service
G2
Step 226: the packet loss k that portable terminal will obtain from step 225
G1Threshold value η with the 3G-real time business
1Compare, if k
G1≤η
1, portable terminal will be confirmed to switch, with 3G mode access service server; If k
G1＞η
1, then forward step 227 to.
Step 227: portable terminal is with the packet loss k of wifi-non-real-time service
W2With its threshold value η
2Compare.If k
W2≤η
2, portable terminal will switch to the wifi pattern, and confirm with wifi mode access service server; If k
W2＞η
2, then forward step 228 to.
Step 228: portable terminal is with the packet loss k of WiMAX-non-real-time service
M2With its threshold value η
2Compare.If k
M2≤η
2, portable terminal will switch to the WiMAX pattern, with WiMAX mode access service server; If k
M2＞η
2, then forward step 229 to.
Step 229: portable terminal is with the packet loss k of 3G-non-real-time service
G2With its threshold value η
2Compare.If k
G2≤η
2, portable terminal will be confirmed to switch, with 3G mode access service server; If k
G2＞η
2The WiMAX pattern that the portable terminal switchback is original, and the declaration all-network is congested.
When portable terminal is in 3G pattern following time, as shown in Figure 8, the practical implementation step is following:
Step 231: portable terminal uses 3G network access service server, and obtains the packet loss k of mobile terminal accessing real time business
G1Packet loss k with the visit non-real-time service
G2
Step 232: the packet loss k that portable terminal will obtain from step 231
G1Threshold value η with the 3G-real time business
1Compare, if k
G1≤η
1, portable terminal will keep present mode constant, continue with 3G mode access service server; If k
G1＞η
1, then forward step 233 to.
Step 233: portable terminal will interrupt, and start the wifi communication pattern temporarily, use wifi module accesses service server, and obtain the packet loss k of mobile terminal accessing real time business
W1Packet loss k with the visit non-real-time service
W2
Step 234: the packet loss k that portable terminal will obtain from step 233
W1Threshold value η with the wifi-real time business
1Compare, if k
W1≤η
1, portable terminal will be confirmed to switch, with wifi mode access service server; If k
W1＞η
1, then forward step 235 to.
Step 235: portable terminal starts the WiMAX communication pattern temporarily, uses WiMAX mode access service server, and obtains the packet loss k of terminal access real time business
M1Packet loss k with the visit non-real-time service
M2
Step 236: the packet loss k that portable terminal will obtain from step 235
M1Threshold value η with the WiMAX-real time business
1Compare, if k
M1≤η
1, portable terminal will be confirmed to switch, with WiMAX mode access service server; If k
M1＞η
1, then forward step 237 to.
Step 237: portable terminal is with the packet loss k of wifi-non-real-time service
W2With its threshold value η
2Compare.If k
W2≤η
2, portable terminal will switch back the wifi pattern, and confirm with wifi mode access service server; If k
W2＞η
2, then forward step 238 to.
Step 238: portable terminal is with the packet loss k of WiMAX-non-real-time service
M2With its threshold value η
2Compare.If k
M2≤η
2, portable terminal will be confirmed to switch, with WiMAX mode access service server; If k
M2＞η
2, then forward step 239 to.
Step 239: portable terminal is with the packet loss k of 3G-non-real-time service
G2With its threshold value η
2Compare.If k
G2≤η
2, portable terminal will switch to the 3G pattern, with 3G mode access service server; If k
G2＞η
2Portable terminal switchback 3G pattern, and the declaration all-network is congested.
Multi-mode switching method of the present invention through decision-making, can be selected optimum communication pattern through the current communication performance of communication service perception, can make the more effective use Internet resources of user, and strengthen anti-interrupt communication ability.Switchover policy of the present invention is based on professional perception, can understand the professional situation of terminal access network in time, accurately, for the user provides higher-quality communication service.
Those of ordinary skill in the art will appreciate that embodiment described here is in order to help reader understanding's principle of the present invention, should to be understood that protection scope of the present invention is not limited to such special statement and embodiment.Those of ordinary skill in the art can make various other various concrete distortion and combinations that do not break away from essence of the present invention according to these teachings disclosed by the invention, and these distortion and combination are still in protection scope of the present invention.
Claims (5)
1. the multi-mode switching method of a heterogeneous network specifically comprises the steps:
Step 1 is confirmed in the heterogeneous network real time business and non-real-time service under every kind of communication pattern, and said real time business is the business that needs real time data mutual, and said non-real-time service is the business of visit without real time reaction; And the priority between the plurality of communication schemes in definite heterogeneous network;
Step 2 is set real time business and non-real-time service packet loss threshold value separately under every kind of communication pattern;
Step 3 is obtained real time business and non-real-time service packet loss separately under every kind of communication pattern;
Step 4, according to priority order from high to low, the contrast of the packet loss that step 3 the is obtained threshold value corresponding with it finds the network of current the most suitable access to switch.
2. multi-mode switching method according to claim 1 is characterized in that the communication pattern in the said heterogeneous network is specially wifi network and 3G network.
3. multi-mode switching method according to claim 2 is characterized in that, specifically comprises the steps:
At first, 4 kinds of basic communication services of definition:
Wifi-real time business: through the multimedia service of wifi access to netwoks;
Wifi-non-real-time service: through the business without real time reaction of wifi access to netwoks;
3G-real time business: through the multimedia service of 3G network visit;
3G-non-real-time service: through the business without real time reaction of 3G network visit;
Set wifi-in real time and the packet loss threshold value η of 3G-real time business
1, the packet loss threshold value η of setting wifi-non real-time and 3G-non-real-time service
2
Obtain wifi-in real time, wifi-non real-time, 3G-in real time, the packet loss of four kinds of business of 3G-non real-time, be respectively k
W1, k
W2, k
G1, k
G2
The threshold value that the packet loss that obtains is corresponding with it compares, according to wifi-in real time＞3G-in real time＞the non real-time priority policy of wifi-non real-time＞3G-compares switching, detailed process is following:
When portable terminal is in wifi pattern following time, the practical implementation step is following:
Step 111: portable terminal uses wifi mode access service server, obtains the packet loss k of mobile terminal accessing real time business
W1Packet loss k with the visit non-real-time service
W2
Step 112: the packet loss k that portable terminal will obtain from step 111
W1Threshold value η with the wifi-real time business
1Compare, if k
W1≤η
1, portable terminal continues through the wifi accesses network professional, does not carry out mode switch; If k
W1＞η
1, then forward step 113 to;
Step 113: portable terminal starts the 3G communication pattern temporarily, uses 3G mode access service server, and obtains the packet loss k of mobile terminal accessing real time business
G1Packet loss k with the visit non-real-time service
G2
Step 114: the packet loss k that portable terminal will obtain from step 113
G1Threshold value η with the 3G-real time business
1Compare, if k
G1≤η
1, portable terminal will be confirmed to switch, with 3G mode access service server; If k
G1＞η
1, then forward step 115 to;
Step 115: portable terminal is with the packet loss k of wifi-non-real-time service
W2With its threshold value η
2Compare, if k
W2≤η
2, portable terminal will switch back original wifi pattern, and confirm with wifi mode access service server; If k
W2＞η
2, then forward step 116 to;
Step 116: portable terminal is with the packet loss k of 3G-non-real-time service
G2With its threshold value η
2Compare, if k
G2≤η
2, portable terminal will be confirmed to switch, with 3G mode access service server; If k
G2＞η
2The wifi pattern that the portable terminal switchback is original, and the declaration all-network is congested;
When portable terminal is in 3G pattern following time, the practical implementation step is following:
Step 121: portable terminal uses 3G network access service server, and obtains the packet loss k of mobile terminal accessing real time business
G1Packet loss k with the visit non-real-time service
G2
Step 122: the packet loss k that portable terminal will obtain from step 121
G1Threshold value η with the 3G-real time business
1Compare, if k
G1≤η
1, portable terminal will keep present mode constant, continue with 3G mode access service server; If k
G1＞η
1, then forward step 123 to;
Step 123: portable terminal will interrupt, and start the wifi communication pattern temporarily, use wifi module accesses service server, and obtain the packet loss k of mobile terminal accessing real time business
W1Packet loss k with the visit non-real-time service
W2
Step 124: the packet loss k that portable terminal will obtain from step 123
W1Threshold value η with the wifi-real time business
1Compare, if k
W1≤η
1, portable terminal will be confirmed to switch, with 3G mode access service server; If k
W1＞η
1, then forward step 125 to;
Step 125: portable terminal is with the packet loss k of wifi-non-real-time service
W2With its threshold value η
2Compare; If k
W2≤η
2, portable terminal will confirm to switch to the wifi pattern, with wifi module accesses service server; If k
W2＞η
2, then forward step 126 to;
Step 126: portable terminal is with the packet loss k of 3G-non-real-time service
G2With its threshold value η
2Compare.If k
G2≤η
2, portable terminal will switch back the 3G pattern, with 3G mode access service server; If k
G2＞η
2The 3G pattern that the same switchback of portable terminal is original, and the declaration all-network is congested.
4. multi-mode switching method according to claim 1 is characterized in that, the communication pattern in the said heterogeneous network is specially wifi network, 3G network and WiMAX network.
5. multi-mode switching method according to claim 4 is characterized in that, specifically comprises the steps:
At first, 6 kinds of basic communication services of definition:
Wifi-real time business: through the multimedia service of wifi access to netwoks;
Wifi-non-real-time service: through the business without real time reaction of wifi access to netwoks;
WiMAX-real time business: through the multimedia service of WiMAX access to netwoks;
WiMAX-non-real-time service: through the business without real time reaction of WiMAX access to netwoks;
3G-real time business: through the multimedia service of 3G network visit;
3G-non-real-time service: through the business without real time reaction of 3G network visit;
Setting wifi-is real-time, WiMAX-real-time and the packet loss threshold value η of 3G-real time business
1, the packet loss threshold value η of setting wifi-non real-time, WiMAX-non real-time and 3G-non-real-time service
2
Obtain wifi-in real time, wifi-non real-time, WiMAX-in real time, WiMAX-non real-time, 3G-in real time, the packet loss of four kinds of business of 3G-non real-time, be respectively k
W1, k
W2, k
M1, k
M2, k
G1, k
G2
The threshold value that the packet loss that obtains is corresponding with it compares, according to wifi-in real time＞WiMAX-in real time＞3G-in real time＞wifi-non real-time＞non real-time priority policy of WiMAX-non real-time＞3G-compares switching, detailed process is following:
When portable terminal is under the wifi pattern, the practical implementation step is following:
Step 211: portable terminal uses wifi mode access service server, obtains the packet loss k of mobile terminal accessing real time business
W1Packet loss k with the visit non-real-time service
W2
Step 212: the packet loss k that portable terminal will obtain from step 211
W1Threshold value η with the wifi-real time business
1Compare, if k
W1≤η
1, portable terminal continues through the wifi accesses network professional, does not carry out mode switch; If k
W1＞η
1, then forward step 213 to;
Step 213: portable terminal starts the WiMAX communication pattern temporarily, uses WiMAX mode access service server, and obtains the packet loss k of terminal access real time business
M1Packet loss k with the visit non-real-time service
M2
Step 214: the packet loss k that portable terminal will obtain from step 213
M1Threshold value η with the WiMAX-real time business
1Compare, if k
M1≤η
1, portable terminal will be confirmed to switch, with WiMAX mode access service server; If k
M1＞η
1, then forward step 215 to;
Step 215: portable terminal starts the 3G communication pattern temporarily, uses 3G mode access service server, and obtains the packet loss k of mobile terminal accessing real time business
G1Packet loss k with the visit non-real-time service
G2
Step 216: the packet loss k that portable terminal will obtain from step 215
G1Threshold value η with the 3G-real time business
1Compare, if k
G1≤η
1, portable terminal will be confirmed to switch, with 3G mode access service server; If k
G1＞η
1, then forward step 217 to;
Step 217: portable terminal is with the packet loss k of wifi-non-real-time service
W2With its threshold value η
2Compare; If k
W2≤η
2, portable terminal will switch back original wifi pattern, and confirm with wifi mode access service server; If k
W2＞η
2, then forward step 218 to;
Step 218: portable terminal is with the packet loss k of WiMAX-non-real-time service
M2With its threshold value η
2Compare.If k
M2≤η
2, portable terminal will switch to the WiMAX pattern, with WiMAX mode access service server; If k
M2＞η
2, then forward step 219 to;
Step 219: portable terminal is with the packet loss k of 3G-non-real-time service
G2With its threshold value η
2Compare; If k
G2≤η
2, portable terminal will be confirmed to switch, with 3G mode access service server; If k
G2＞η
2The wifi pattern that the portable terminal switchback is original, and the declaration all-network is congested;
When portable terminal is under the WiMAX pattern, concrete implementation step is following:
Step 221: portable terminal uses WiMAX mode access service server, obtains the packet loss k of mobile terminal accessing real time business
M1Packet loss k with the visit non-real-time service
M2
Step 222: the packet loss k that portable terminal will obtain from step 221
M1Threshold value η with the wifi-real time business
1Compare, if k
M1≤η
1, portable terminal continues through the wifi accesses network professional, does not carry out mode switch; If k
M1＞η
1, then forward step 223 to;
Step 223: portable terminal starts the wifi communication pattern temporarily, uses WiMAX mode access service server, and obtains the packet loss k of terminal access real time business
W1Packet loss k with the visit non-real-time service
W2
Step 224: the packet loss k that portable terminal will obtain from step 223
W1Threshold value η with the wifi-real time business
1Compare, if k
W1≤η
1, portable terminal will be confirmed to switch, with wifi mode access service server; If k
W1＞η
1, then forward step 225 to;
Step 225: portable terminal starts the 3G communication pattern temporarily, uses 3G mode access service server, and obtains the packet loss k of mobile terminal accessing real time business
G1Packet loss k with the visit non-real-time service
G2
Step 226: the packet loss k that portable terminal will obtain from step 225
G1Threshold value η with the 3G-real time business
1Compare, if k
G1≤η
1, portable terminal will be confirmed to switch, with 3G mode access service server; If k
G1＞η
1, then forward step 227 to;
Step 227: portable terminal is with the packet loss k of wifi-non-real-time service
W2With its threshold value η
2Compare; If k
W2≤η
2, portable terminal will switch to the wifi pattern, and confirm with wifi mode access service server; If k
W2＞η
2, then forward step 228 to;
Step 228: portable terminal is with the packet loss k of WiMAX-non-real-time service
M2With its threshold value η
2Compare; If k
M2≤η
2, portable terminal will switch to the WiMAX pattern, with WiMAX mode access service server; If k
M2＞η
2, then forward step 229 to;
Step 229: portable terminal is with the packet loss k of 3G-non-real-time service
G2With its threshold value η
2Compare; If k
G2≤η
2, portable terminal will be confirmed to switch, with 3G mode access service server; If k
G2＞η
2The WiMAX pattern that the portable terminal switchback is original, and the declaration all-network is congested;
When portable terminal is in 3G pattern following time, the practical implementation step is following:
Step 231: portable terminal uses 3G network access service server, and obtains the packet loss k of mobile terminal accessing real time business
G1Packet loss k with the visit non-real-time service
G2
Step 232: the packet loss k that portable terminal will obtain from step 231
G1Threshold value η with the 3G-real time business
1Compare, if k
G1≤η
1, portable terminal will keep present mode constant, continue with 3G mode access service server; If k
G1＞η
1, then forward step 233 to;
Step 233: portable terminal will interrupt, and start the wifi communication pattern temporarily, use wifi module accesses service server, and obtain the packet loss k of mobile terminal accessing real time business
W1Packet loss k with the visit non-real-time service
W2
Step 234: the packet loss k that portable terminal will obtain from step 233
W1Threshold value η with the wifi-real time business
1Compare, if k
W1≤η
1, portable terminal will be confirmed to switch, with wifi mode access service server; If k
W1＞η
1, then forward step 235 to;
Step 235: portable terminal starts the WiMAX communication pattern temporarily, uses WiMAX mode access service server, and obtains the packet loss k of terminal access real time business
M1Packet loss k with the visit non-real-time service
M2
Step 236: the packet loss k that portable terminal will obtain from step 235
M1Threshold value η with the WiMAX-real time business
1Compare, if k
M1≤η
1, portable terminal will be confirmed to switch, with WiMAX mode access service server; If k
M1＞η
1, then forward step 237 to;
Step 237: portable terminal is with the packet loss k of wifi-non-real-time service
W2With its threshold value η
2Compare; If k
W2≤η
2, portable terminal will switch back the wifi pattern, and confirm with wifi mode access service server; If k
W2＞η
2, then forward step 238 to;
Step 238: portable terminal is with the packet loss k of WiMAX-non-real-time service
M2With its threshold value η
2Compare.If k
M2≤η
2, portable terminal will be confirmed to switch, with WiMAX mode access service server; If k
M2＞η
2, then forward step 239 to;
Step 239: portable terminal is with the packet loss k of 3G-non-real-time service
G2With its threshold value η
2Compare; If k
G2≤η
2, portable terminal will switch to the 3G pattern, with 3G mode access service server; If k
G2＞η
2Portable terminal switchback 3G pattern, and the declaration all-network is congested.
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