CN100459812C - Wireless network system, its switching method and mobile station-transferring equipment - Google Patents
Wireless network system, its switching method and mobile station-transferring equipment Download PDFInfo
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- CN100459812C CN100459812C CNB2006100725618A CN200610072561A CN100459812C CN 100459812 C CN100459812 C CN 100459812C CN B2006100725618 A CNB2006100725618 A CN B2006100725618A CN 200610072561 A CN200610072561 A CN 200610072561A CN 100459812 C CN100459812 C CN 100459812C
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Abstract
In the invention, a mobile relay station is added into the system; the radio self-networking mode is set in the dual-mode mobile terminal; as required, the dual-mode mobile terminal is switched into the radio self-networking mode from cellular network access mode or wideband radio access mode; under the radio self-networking mode, the dual-mode mobile terminal accesses the base station of mobile wideband radio access network or the base station of cellular network; the mobile relay station is used in relaying information between the dual-mode mobile terminal and the base station of wideband radio access network or the base station of cellular network, under the self-networking mode.
Description
Technical field
The present invention relates to wireless communication technology field, particularly a kind of Radio Network System and changing method and mobile terminal equipment of supporting that dual-mode terminal inserts.
Background technology
Along with the IPization of network, cellular mobile network forward all-IP (ALL-IP) trend development; Various broadband access technologys, as wireless lan (wlan), wireless MAN (WMAN) and mobile broadband wireless access (MBWA) etc. all are based on the IP technology.Though the data service development rapidly, speech business is still main the most general.Traditional Circuit-switched mobile voice service will be replaced by packet radio voice service (VoIPoW); Though broadband access technology at be data service, be necessary to the support of speech business.
VoIPoW has introduced the flexibility of IP, but is not so good as the speech business of legacy circuit-switched aspect the availability of frequency spectrum and voice quality QOS.Therefore, need utilize current wireless wideband access network supporting cellular mobile network, improve the performance of VoIPoW.Like this, the dual-mode terminal of honeycomb mode of operation and broadband access pattern just occurs having and supported the wireless network that dual-mode terminal inserts.
Referring to Fig. 1, Fig. 1 supports the Radio Network System schematic diagram that dual-mode terminal inserts for prior art.Support the wireless network that dual-mode terminal inserts, usually based on IP Multimedia System (IMS) and Session Initiation Protocol.As shown in Figure 1, this network system comprises: IMS core net, cellular network base station (C-BS), mobile broadband wireless access networks network base station (W-BS) and mode mobile terminal (MH).
Wherein, the IMS core net comprises CSCF (Call Session Control Function, CSCF) entity: comprise proxy CSCF (Proxy CSCF, P-CSCF), serving CSCF (ServingCSCF, S-CSCF) and inquiry CSCF (Interrogating CSCF, I-CSCF) three functional entitys, being responsible for to customer multi-media session handles, its function comprises: Multimedia session control, address translation and to service negotiation serve the conversion etc. be equivalent to sip server, be used to finish the called gateways function, call business triggers function and routing function.
Cellular network base station (C-BS): bearing function with multiple wireless data services such as VoIPoW business, mobile video telephone, mobile flow medium services.
Mobile broadband wireless access networks network base station (W-BS): as the access point (AP) of WLAN, the broadband wireless access of mode mobile terminal is supported in the BS of IEEE802.16E or the base station of MBWA etc.
Mode mobile terminal (MH) has honeycomb and mobile broadband wireless and inserts two kinds and eat dishes without rice or wine, and eats dishes without rice or wine and broadband access eats dishes without rice or wine to insert cellular network and wireless mobile broadband network by honeycomb, uses honeycomb to eat dishes without rice or wine or broadband wireless empty port load-supporting VoIPoW.
At present, guarantee that the professional most scheme of continuity is the vertical switching of considering between the heterogeneous wireless network basically, attempt, guarantee professional continuity by carrying out vertical the switching based on the position of terminal and the intensity of received signal.
Below for example the process of vertical switching is described.
Suppose that during beginning, dual-mode handset (MS) carries out the VoIPoW business by wlan network, simultaneously, MS is according to the beacon of system parameters search cellular mobile network.The average signal strength of the honeycomb that receives as MS is during greater than the vertical thresholding that switches, and MS inserts cellular network simultaneously, makes MS have the ability of grand diversity.When the average signal strength of honeycomb during greater than vertical handoff threshold certain value, MS discharges and being connected of WLAN, and only is connected with honeycomb, searches for adjacent cellular network base station simultaneously, to carry out the level switching.
Otherwise, the switching from the honeycomb to WLAN, principle is similar, here no longer repeat specification.
As seen, do not consider the access control problem in the vertical handover procedure in the prior art, when MS when WLAN inserts cellular network, if present base station then can produce call drop because capacity limit can't insert.When MS initiates the VoIPoW calling in this case, owing to call congestion causes calling out also unsuccessful.Vice versa.
In the practical application,, repeater (Repeater) can be set in network in order to eliminate the signal blind zone among a small circle or the weak signal area of mobile radio communication.The repeater is in stand a kind of radio transmission transferring equipment of signal humidification of wireless communication transmissions process, its basic function is the radiofrequency signal power intensifier, be operated between base station and the portable terminal, have two wave points: one of them is a donor antenna, be used for carrying out signal transmitting and receiving with the base station, another is a retransmitting antenna, is used for carrying out signal transmitting and receiving with portable terminal.
Summary of the invention
In view of this, first main purpose of the present invention is to provide a kind of Radio Network System of supporting that dual-mode terminal inserts, and this system can reduce because of in the vertical handover procedure, and the business that access control causes can't insert or the situation of call failure.
Another main purpose of the present invention is to provide a kind of changing method of dual-mode terminal, uses this method, can reduce because of in the vertical handover procedure, and the business that access control causes can't insert or the situation of call failure.
The of the present invention the 3rd main purpose is to provide a kind of mobile transferring equipment, and this equipment can be applied in the above-mentioned Radio Network System, and system is reduced because of in the vertical handover procedure, and the business that access control causes can't insert or the situation of call failure.
Be first aspect that achieves the above object, the invention provides a kind of Radio Network System of supporting that dual-mode terminal inserts, comprise at least: IMS core net, cellular network base station, mobile broadband wireless access networks network base station, mode mobile terminal; Described IMS core net links to each other respectively with cellular network base station, mobile broadband wireless access networks network base station, is used to carry out business control; Described mode mobile terminal is used for Cellular Networks access module or broadband wireless access pattern, is linked into the IMS core net by cellular network base station or mobile broadband wireless access networks network base station, and this system also comprises mobile terminal equipment;
Described mode mobile terminal further is provided with the wireless self-networking pattern, as required from Cellular Networks access module or broadband wireless access mode switch to the wireless self-networking pattern, under the wireless self-networking pattern, be linked into mobile broadband wireless access networks network base station or cellular network base station by mobile terminal equipment;
Described mobile terminal equipment is used under the wireless self-networking pattern, and the information between mode mobile terminal and mobile broadband wireless access networks network base station or the cellular network base station is transmitted.
Can comprise a plurality of mobile terminal equipment in this system, each moves the employing of terminal equipment and answers formula wireless self-networking agreement earlier, and the information that is used for the dual-mode terminal in the presumptive area is transmitted.
Described mobile terminal equipment can be for having the mobile terminal equipment of proxy authentication and/or proxy accounting function.
Described mobile terminal equipment comprises main control module, message processing module and two antennal interfaces at least;
Wherein, first antennal interface is used to adopt wireless self-networking pattern and mode mobile terminal to communicate; Second antennal interface is used to adopt broadband wireless access pattern and mobile broadband wireless access networks network base station to communicate;
Described main control module links to each other with message processing module, is used for the control to message processing module;
Described message processing module links to each other with two antennal interfaces with main control module respectively, is used under the control of main control module, and the information that receives from two antennal interfaces is transmitted mutually.
Described mobile terminal equipment can further comprise: the protocol conversion module that links to each other with message processing module with main control module, the third antenna interface that links to each other with message processing module respectively;
Message processing module further will send to protocol conversion module from the information that first antennal interface receives and carry out protocol conversion, and information sends to cellular network base station by the third antenna interface after the conversion that protocol conversion module is returned; Maybe will send to protocol conversion module and carry out protocol conversion, and information sends to dual-mode terminal by first antennal interface after the conversion that protocol conversion module is returned from the information that the third antenna interface receives;
Described protocol conversion module links to each other with message processing module with main control module respectively, be used under master control module controls: the information that receives from first antennal interface that will be transmitted by message processing module is converted to the form that cellular network base station can receive and returns to message processing module; Or the information that receives from the third antenna interface that will transmit by message processing module, be converted to the form that the broadband wireless of dual-mode terminal eats dishes without rice or wine to receive and return to message processing module.
Described cellular network base station can be for having the cellular network base station of packet radio voice service, mobile video telephone, mobile flow medium service bearing function.
Grid network is formed in a plurality of mobile broadband wireless access networks networks base station in this system, and formula wireless self-networking agreement is answered in this grid network employing earlier.
Be second aspect that achieves the above object, the invention provides a kind of changing method of dual-mode terminal, be applied to above-mentioned Radio Network System, when dual-mode terminal was carried out business procedure under the broadband wireless access pattern, its handoff procedure comprised:
A, judge whether to carry out mode switch, if execution in step B then; Otherwise return this step;
B, switch to the wireless self-networking mode of operation, be linked into mobile broadband wireless access networks network base station or the cellular network base station that mobile terminal equipment can insert, continue professional by the mobile terminal equipment in the system.
Whether the method that steps A is described to judge whether to carry out mode switch can detect the broadband wireless state of eating dishes without rice or wine in real time for: dual-mode terminal,, judge whether to carry out mode switch less than switching threshold according to wireless wide band signal;
Or dual-mode terminal disposes according to the user, determines whether to carry out mode switch;
Or mode selector switch or interface switching are set on dual-mode terminal, and select according to the user, determine whether to carry out mode switch.
Dual-mode terminal can dispose according to the user, is surpassing intended service during the time, determines to carry out mode switch; Or when being less than scheduled volume, determine to carry out mode switch according to user's configuration service data volume.
Described dual-mode terminal is under the wireless self-networking pattern, and the employing broadband wireless is eated dishes without rice or wine and mobile terminal equipment carries out information interaction;
Step B described by the mobile terminal equipment in the system be linked into the mobile broadband wireless access networks network base station that mobile terminal equipment can insert method can for:
Mobile terminal equipment will directly be transmitted to mobile broadband wireless access networks network base station from the information that the broadband wireless of dual-mode terminal eats dishes without rice or wine to receive; The information that will receive from mobile broadband wireless access networks network base station directly is transmitted to dual-mode terminal.
Described dual-mode terminal is under the wireless self-networking pattern, and the employing broadband wireless is eated dishes without rice or wine and mobile terminal equipment carries out information interaction;
This method may further include:
The information that mobile terminal equipment will eat dishes without rice or wine to receive from the broadband wireless of dual-mode terminal is converted to the form that cellular network base station can receive and is transmitted to cellular network base station; The information that will receive from cellular network base station is converted to the form that the broadband wireless of dual-mode terminal eats dishes without rice or wine to receive and is transmitted to dual-mode terminal.
This method can also comprise: in the dual-mode terminal initialization procedure, insert cellular network and broadband wireless network, if broadband wireless access is unsuccessful, then adopt wireless self-networking pattern access band wireless network.
This method can also comprise: if at predetermined search in the time or when reaching the predetermined search number of times, dual-mode terminal all can't the access band wireless network by broadband wireless access pattern and wireless self-networking pattern, and broadband wireless network then stops search.
This method can also comprise: in advance according to user's needs, all wireless data services of dual-mode terminal support are divided into: important service and non-important service, or the difference of a business called out be divided into important service and non-important service;
Eat dishes without rice or wine to carry out important service by Cellular Networks, carry out non-important service by the broadband wireless access pattern.
When Cellular Networks eats dishes without rice or wine to carry out in the important service process, in the time of need carrying out mode switch, start broadband wireless and eat dishes without rice or wine, can be directly switch to the wireless self-networking mode of operation.
When Cellular Networks eats dishes without rice or wine to carry out in the important service process, in the time of need carrying out mode switch, start broadband wireless and eat dishes without rice or wine, also can switch to the broadband wireless access pattern earlier, when the broadband wireless access pattern is unsuccessful, switch to the wireless self-networking mode of operation.
Eat dishes without rice or wine to carry out in the important service process when Cellular Networks, can detect the Cellular Networks state of eating dishes without rice or wine in real time, during whether less than switching threshold, determine whether to carry out mode switch according to the Cellular Networks signal;
Or dual-mode terminal disposes according to the user, determines whether to carry out mode switch;
Or mode selector switch or interface switching are set on dual-mode terminal, and select according to the user, determine whether to carry out mode switch.
Dual-mode terminal can dispose according to the user, is surpassing intended service during the time, determines to carry out mode switch; Or when being less than scheduled volume, determine to carry out mode switch according to user's configuration service data volume.
The described method that switches to the wireless self-networking mode of operation can for:
Broadband wireless is eated dishes without rice or wine to switch to the wireless self-networking mode of operation, and carry out the wireless self-networking route finding process, after the route response that mobile terminal equipment returns in receiving network, move terminal equipment with this and connect.
The 3rd aspect for achieving the above object the invention provides a kind of mobile terminal equipment, comprises main control module, message processing module and two antennal interfaces at least;
Wherein, first antennal interface is used to adopt wireless self-networking pattern and mode mobile terminal to communicate; Second antennal interface is used to adopt broadband wireless access pattern and mobile broadband wireless access networks network base station to communicate;
Described main control module links to each other with message processing module, is used for the control to message processing module;
Described message processing module links to each other with two antennal interfaces with main control module respectively, is used under the control of main control module, and the information that receives from two antennal interfaces is transmitted mutually.
Described mobile terminal equipment can further comprise: the protocol conversion module that links to each other with message processing module with main control module, the third antenna interface that links to each other with message processing module respectively;
Message processing module further will send to protocol conversion module from the information that first antennal interface receives and carry out protocol conversion, and information sends to cellular network base station by the third antenna interface after the conversion that protocol conversion module is returned; Maybe will send to protocol conversion module and carry out protocol conversion, and information sends to dual-mode terminal by first antennal interface after the conversion that protocol conversion module is returned from the information that the third antenna interface receives;
Described protocol conversion module links to each other with message processing module with main control module respectively, be used under master control module controls: the information that receives from first antennal interface that will be transmitted by message processing module is converted to the form that cellular network base station can receive and returns to message processing module; Or the information that receives from the third antenna interface that will transmit by message processing module, be converted to the form that the broadband wireless of dual-mode terminal eats dishes without rice or wine to receive and return to message processing module.
As seen from the above technical solutions, Radio Network System and changing method and mobile terminal equipment that this support dual-mode terminal of the present invention inserts, in system, increase described mobile terminal (MRS) equipment, adopt wireless self-networking (Ad Hoc) technology, dual-mode terminal can be switched between these three kinds of mode of operations in Cellular Networks access module, broadband wireless access pattern, Ad Hoc pattern.Dual-mode terminal is being carried out in the business procedure by the broadband wireless access pattern, when needs carry out mode switch, be not directly switch to the Cellular Networks access module, but switch to Ad Hoc mode of operation, be linked into other base stations by the MRS equipment that increases in the system, continue professional.
Switch to Ad Hoc pattern from the broadband access module, it is the switching in mobile broadband nets such as WLAN, belonging to level switches, therefore, reduced the probability of dual-mode terminal from mobile broadband nets such as WLAN to the vertical switching of Cellular Networks, thereby can reduce because of in the vertical handover procedure, the business that access control causes can't insert or the situation of call failure.
Simultaneously, because the time that level is switched relatively vertically switches, switching time is shorter usually, has therefore reduced the probability of vertical switching, has also just shortened and has switched the time delay that takies, and has improved service feature, especially for real time business, has more practical significance; Also can reach the effect that reduces data-bag lost in the handoff procedure for non-real-time service.
Description of drawings
Fig. 1 supports the Radio Network System schematic diagram that dual-mode terminal inserts for prior art;
Fig. 2 is the Radio Network System schematic diagram that the support dual-mode terminal of a preferred embodiment of the present invention inserts;
Fig. 3 is mobile terminal equipment one preferred embodiment structural representation;
Fig. 4 is the initialized schematic flow sheet of dual-mode terminal in the system shown in Figure 2;
Fig. 5 is the schematic flow sheet that dual-mode terminal is handled the VoIPoW business in the system shown in Figure 2.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
Radio Network System and business access method thereof that this support dual-mode terminal of the present invention inserts, in system, increase mobile terminal (MRS) terminal, adopt wireless self-networking (AdHoc) technology of broadband wireless network, dual-mode terminal can be switched between these three kinds of mode of operations in Cellular Networks access module, broadband wireless access pattern, Ad Hoc pattern.Dual-mode terminal is being carried out in the business procedure by the broadband wireless access pattern, when needs carry out mode switch, be not directly switch to the Cellular Networks access module, but switch to Ad Hoc mode of operation, be linked into other base stations by the MRS terminal that increases in the system, continue professional.Only under the situation of Ad Hoc mode of operation access failure, just carry out vertical handover procedure and switch to the Cellular Networks access module.
Referring to Fig. 2, Fig. 2 is the Radio Network System schematic diagram that the support dual-mode terminal of a preferred embodiment of the present invention inserts.The Radio Network System of present embodiment has adopted three layers of networking plan, and ground floor is grid (MESH) network, and the second layer is the transfer net that moves, and the 3rd layer is traditional Ad Hoc network.The wireless network of present embodiment also is based on IP Multimedia System (IMS) and Session Initiation Protocol.As shown in Figure 2, this network system not only comprises: IMS core net, cellular network base station (C-BS), mobile broadband wireless access networks network base station (W-BS), mode mobile terminal (MH) also comprise mobile terminal (MRS) equipment.
Wherein, the IMS core net is identical with prior art shown in Figure 1, also comprise CSCF (Call Session Control Function, CSCF) entity: comprise proxy CSCF (Proxy CSCF, P-CSCF), serving CSCF (Serving CSCF, S-CSCF) and inquiry CSCF (InterrogatingCSCF, I-CSCF) three functional entitys, being responsible for to customer multi-media session handles, its function comprises: Multimedia session control, address translation and to service negotiation serve the conversion etc. be equivalent to sip server, be used to finish the called gateways function, call business triggers function and routing function.
Cellular network base station (C-BS): also the same with prior art shown in Figure 1, the bearing function with multiple wireless data services such as VoIPoW business, mobile video telephone, mobile flow medium services.
Mobile broadband wireless access networks network base station (W-BS): as the access point (AP) of WLAN, the broadband wireless access of MESH networking and mode mobile terminal is supported in the BS of IEEE802.16E or the base station of MBWA etc., is in the MESH network of ground floor.
W-BS is static, and a plurality of W-BS form the MESH net.Because the variation of network topology only is subjected to the influence of wireless chaining status, it not is very frequent that topology is upgraded, therefore, the MESH network using of ground floor is answered the Ad Hoc Routing Protocol of formula (Proactive) earlier, as wireless Routing Protocol WRP (Wireless Routing Protocol).
(Mobile Relay Station, MRS) equipment, MRS equipment have that honeycomb is eated dishes without rice or wine and broadband wireless is eated dishes without rice or wine to mobile terminal, are in the transfer network of the second layer, are responsible for that honeycomb inserts and the forwarding of broadband wireless access.Each MRS is responsible for the access that the MH in the presumptive area arrives core net, adopts the Ad Hoc Routing Protocol of answering formula (Proactive) earlier.
The MRS equipment that adopts in the present embodiment can be the triantennary dual-mode equipment, and its structure is referring to Fig. 3, and Fig. 3 is mobile terminal equipment one preferred embodiment structural representation.This MRS equipment comprises: first antennal interface 300, second antennal interface 301, third antenna interface 302, main control module 303, message processing module 304 and protocol conversion module 305.
Wherein, first antennal interface 300 is used to adopt Ad Hoc pattern and mode mobile terminal to communicate; Second antennal interface 301 is used to adopt broadband wireless access pattern and W-BS to communicate.
Specifically, message processing module 304 is under the control of main control module 303, and the information that will send from the dual-mode terminal that first antennal interface 300 receives directly is transmitted to W-BS by second antennal interface; Maybe will send to after protocol conversion module 305 carries out protocol conversion, be transmitted to C-BS by third antenna interface 302 again from the information that first antennal interface 300 receives; Maybe will be transmitted to dual-mode terminal, will send to from the information that third antenna interface 302 receives after protocol conversion module 305 carries out protocol conversion, be transmitted to dual-mode terminal by first antennal interface 300 again from the information that second antennal interface 301 receives.
Here, message processing module 304 will be from the information of first antennal interface, 300 receptions, be directly to be transmitted to W-BS by second antennal interface 301, still this information is sent to after protocol conversion module 305 carries out protocol conversion, be transmitted to C-BS by third antenna interface 302 again, can be pre-configured, such as transmitting by W-BS for some business, other are transmitted by C-BS, can also transmit by C-BS under the situation that can't insert W-BS.
Certainly,, and do not need to insert C-BS, then can adopt the double antenna dual-mode equipment if dual-mode terminal under Ad Hoc mode of operation, only needs to insert W-BS by MRS equipment.This double antenna dual-mode equipment only comprises: second antennal interface, main control module and the message processing module that communicate with first antennal interface of communication by bimode terminal, with W-BS.Its operation principle and triantennary dual-mode equipment shown in Figure 3 are basic identical, have only 2 differences: do not have protocol conversion module 305, also the third antenna interface 302 of not communicating by letter with C-BS.
Because dual-mode terminal is under Ad Hoc mode of operation, insert W-BS by MRS equipment and do not need to carry out protocol conversion, therefore can save the resource consumption of MRS equipment and shorten time delay, therefore recommendation adopts the MRS equipment of double antenna dual-mode equipment to insert the working method of W-BS.
As seen, dual-mode terminal can be communicated by letter with W-BS or C-BS by MRS equipment as required.Than C-BS and W-BS, the characteristics of MRS equipment maximum are to have mobility; Than MH, the MRS functions of the equipments are more powerful, usually the function that has agent security authentication and/or proxy accounting, briefly, by MRS equipment information such as user profile, service recorder are transmitted to core net exactly, the dual-mode terminal that core net is gone into according to these information butt joint carries out safety certification and charging.
Mode mobile terminal (MH), having the access of honeycomb and mobile broadband wireless eats dishes without rice or wine for two kinds, by honeycomb eat dishes without rice or wine and broadband access eat dishes without rice or wine to insert cellular network and wireless mobile broadband network, and Cellular Networks access, broadband access and three kinds of mode of operations of Ad Hoc are arranged, being in the 3rd layer the Ad Hoc network, is the consumer of wireless data services such as VoIPoW.The Ad Hoc Routing Protocol of the 3rd layer Ad Hoc network using reaction equation (Reactive).Bimodulus moves can be held eventually as required from Cellular Networks access module or broadband wireless access mode switch to Ad Hoc pattern, is linked into W-BS or C-BS by MRS equipment under Ad Hoc pattern.
By network architecture shown in Figure 2 as seen,, can increase the quantity of the dual-mode terminal that is linked into C-BS or W-BS, therefore can increase the capacity of cellular network and wireless broadband network owing to adopted MRS equipment.
The Ad Hoc network of the MRS transfer network of the second layer and the 3rd layer has constituted the Ad Hoc network of level, can adopt nonplanar Ad Hoc Routing Protocol, as regional Routing Protocol ZRP (ZoneRouting Protocol).
Referring to Fig. 4, Fig. 4 is the initialized schematic flow sheet of dual-mode terminal in the system shown in Figure 2.This flow process may further comprise the steps:
Allocation list (PROFILE) after dual-mode terminal powers on, is read in step 400～401, and access module is eated dishes without rice or wine to be in the broadband.Because the change in topology of Ad Hoc network is frequent relatively, therefore, the mode of operation that broadband wireless is eated dishes without rice or wine is defaulted as access module.
Step 402 inserts cellular network.The method that inserts cellular network in this step is same as the prior art, no longer describes in detail here.
Step 403 adopts broadband access pattern search W-BS, judges whether success, if then execution in step 407; Otherwise execution in step 404.
Step 404 adopts Ad Hoc pattern, by the search of the MRS equipment in network W-BS, judges whether success, if then execution in step 407; Otherwise execution in step 405.
Step 406 judges whether the frequency of failure that reaches predetermined, if broadband wireless network then stops search; Otherwise return step 403.
Be to adopt the mode of record number of times to realize the broadband wireless network that stops search in the present embodiment, in the practical application, can also adopt method regularly, when beginning to search for, start timer, timing to and also do not search broadband wireless network, broadband wireless network then stops search.
Can be in advance among the present invention need, all wireless data services of dual-mode terminal support are divided into according to the user: important service and non-important service, for example: the VoIPoW business is made as important service, mobile flow medium service is made as non-important service.Can also call out the difference of a business and be divided into important service and non-important service, for example: to the VoIPoW business, calling out called subscriber A is important service, and calling out called subscriber B is non-important service.Can be provided with by Cellular Networks and eat dishes without rice or wine to carry out important service, carry out non-important service by the broadband access pattern.
Below, be example with the VoIPoW business, the changing method among the present invention is further elaborated.In the present embodiment, at first the user calls out the difference of VoIPoW business and sorts according to importance, has divided important service and non-important service, is provided with and eats dishes without rice or wine to carry out important service by Cellular Networks, and the Ad Hoc mode of operation of mobile broadband as a supplement; Carry out non-important service by the broadband access pattern, the Ad Hoc mode of operation of mobile broadband as a supplement; And relevant information has been stored in the dual-mode terminal.
Like this, eat dishes without rice or wine to carry out important service, carry out non-important service, can shunt the VoIPoW business of honeycomb, can reduce and block and probability of call by the broadband access pattern by Cellular Networks.In addition, for non-important conversation, what the mobile subscriber more paid close attention to is price, therefore uses the wireless access of mobile broadband.
Referring to Fig. 5, Fig. 5 is the schematic flow sheet that dual-mode terminal is handled the VoIPoW business in the system shown in Figure 2.This flow process may further comprise the steps:
Step 500～501 begin to handle the VoIPoW business, and according to the setting of storage in advance, judge whether into predetermined important service, if then execution in step 502; Otherwise, execution in step 506.
Step 502 is used the Cellular Networks access module.
Step 503 judges whether and can insert, if execution in step 504 then; Otherwise exhalation VoIPoW business is obstructed or is switched and is obstructed, execution in step 506.
In this step, network side according to allowing access control mechanism, according to the current network resources situation, determines whether to allow this terminal to insert after the access request that receives dual-mode terminal, and issues and comprise the access response that whether allows access information.Dual-mode terminal determines whether and can insert according to this response.
Step 505 whether less than switching threshold, need to judge whether mode switch according to current Cellular Networks signal, if then execution in step 506; Otherwise return step 503.
In this step, dual-mode terminal can also dispose according to the user, determines whether to carry out mode switch; Or mode selector switch or interface switching are set on dual-mode terminal, and select according to the user, determine whether to carry out mode switch.
For example: dual-mode terminal disposes according to the user, is surpassing intended service during the time, determines to carry out mode switch; Or when being less than scheduled volume, determine to carry out mode switch according to user's configuration service data volume.
Step 506 starts broadband wireless and eats dishes without rice or wine, and uses the broadband wireless access pattern.
Step 507 judges whether and can insert, if then execution in step 508; Otherwise exhalation VoIPoW business is obstructed or is switched and is obstructed, execution in step 510.
In this step, network side according to allowing access control mechanism, according to the current network resources situation, determines whether to allow this terminal to insert after the access request that receives dual-mode terminal, and issues and comprise the access response that whether allows access information.Dual-mode terminal determines whether and can insert according to this response.
Step 509 whether less than switching threshold, need to judge whether mode switch according to current mobile broadband wireless networks signal, if then execution in step 510; Otherwise return step 508.
In this step, dual-mode terminal can also dispose according to the user equally, determines whether to carry out mode switch; Or mode selector switch or interface switching are set on dual-mode terminal, and select according to the user, determine whether to carry out mode switch.
For example: dual-mode terminal disposes according to the user, is surpassing intended service during the time, determines to carry out mode switch; Or when being less than scheduled volume, determine to carry out mode switch according to user's configuration service data volume.
Step 510 switches to Ad Hoc pattern, continues professional.
In this step, dual-mode terminal switch to Ad Hoc pattern method can for: broadband wireless is eated dishes without rice or wine to switch to the wireless self-networking mode of operation, and execution wireless self-networking route finding process, after the route response that mobile terminal equipment returns in receiving network, move terminal equipment with this and connect.
Like this, dual-mode terminal just can pass through MRS equipment to the base station forwarding information, and has been linked into the IMS core net.Specifically, MRS equipment can directly be transmitted to W-BS with the information of eating dishes without rice or wine to receive from the broadband wireless of dual-mode terminal; And will directly be transmitted to dual-mode terminal from the information that W-BS receives.
If adopt MRS equipment shown in Figure 3, MRS equipment can also be with the information of eating dishes without rice or wine to receive from the broadband wireless of dual-mode terminal, is converted to the form that C-BS can receive and is transmitted to C-BS; The information that will receive from C-BS is converted to the form that the broadband wireless of dual-mode terminal eats dishes without rice or wine to receive and is transmitted to dual-mode terminal.
As for MRS equipment is direct forwarding, still transmits through after the protocol conversion, can be pre-configured, and such as transmitting by W-BS for some business, other are transmitted by C-BS, can also transmit by C-BS under the situation that can't insert W-BS.
Dual-mode terminal can be linked into the IMS core net by a W-BS, also can adopt trunking scheme, by being linked into the IMS core net behind a plurality of W-BS relayings.
In the present embodiment,, in the time of need carrying out mode switch, start broadband wireless and eat dishes without rice or wine, switch to the broadband access pattern earlier, when the broadband access pattern is unsuccessful, switch to the wireless self-networking mode of operation when Cellular Networks eats dishes without rice or wine to carry out in the important service process.In the practical application,, in the time that mode switch need being carried out, can after eating dishes without rice or wine, the startup broadband wireless be directly switch to the wireless self-networking mode of operation when Cellular Networks eats dishes without rice or wine to carry out in the important service process.
Under the unsuccessful situation of Ad Hoc mode of operation, can consider to switch to again cellular network, like this, significantly reduced the number of times of vertical switching, most switching is equivalent to level and switches.Therefore, on the basis of reducing conversation obstruction and call drop probability, significantly reduce time delay for switching, reduced the energy consumption of dual-mode terminal by Ad Hoc pattern.
By the above embodiments as seen, Radio Network System and changing method and mobile terminal equipment that this support dual-mode terminal of the present invention inserts can increase the capacity of cellular network and wireless broadband network; Reduce cellular network and the call blocking rate of wireless broadband network and the probability of service disconnection; Reduce the vertical number of times that switches, significantly reduced time delay for switching, improved the performance of real time business; Reduced the energy consumption of dual-mode terminal by Ad Hoc mode; By mobile terminal MRS, guaranteed professional runing and to manage; By mobile terminal MRS, make cellular network and wireless broadband network load balance.
Claims (22)
1, a kind of Radio Network System of supporting that dual-mode terminal inserts comprises: IMS core net, cellular network base station, mobile broadband wireless access networks network base station, mode mobile terminal at least; Described IMS core net links to each other respectively with cellular network base station, mobile broadband wireless access networks network base station, is used to carry out business control; Described mode mobile terminal is used for Cellular Networks access module or broadband wireless access pattern, is linked into the IMS core net by cellular network base station or mobile broadband wireless access networks network base station, and it is characterized in that: this system also comprises mobile terminal equipment;
Described mode mobile terminal further is provided with the wireless self-networking pattern, as required from Cellular Networks access module or broadband wireless access mode switch to the wireless self-networking pattern, under the wireless self-networking pattern, be linked into mobile broadband wireless access networks network base station or cellular network base station by mobile terminal equipment;
Described mobile terminal equipment is used under the wireless self-networking pattern, and the information between mode mobile terminal and mobile broadband wireless access networks network base station or the cellular network base station is transmitted.
2, Radio Network System as claimed in claim 1 is characterized in that: comprise a plurality of mobile terminal equipment in this system, each moves the employing of terminal equipment and answers formula wireless self-networking agreement earlier, and the information that is used for the dual-mode terminal in the presumptive area is transmitted.
3, Radio Network System as claimed in claim 2 is characterized in that: described mobile terminal equipment is the mobile terminal equipment with proxy authentication and/or proxy accounting function.
4, as claim 2 or 3 described Radio Network Systems, it is characterized in that: described mobile terminal equipment comprises main control module, message processing module and two antennal interfaces at least;
Wherein, first antennal interface is used to adopt wireless self-networking pattern and mode mobile terminal to communicate; Second antennal interface is used to adopt broadband wireless access pattern and mobile broadband wireless access networks network base station to communicate;
Described main control module links to each other with message processing module, is used for the control to message processing module;
Described message processing module links to each other with two antennal interfaces with main control module respectively, is used under the control of main control module, and the information that receives from two antennal interfaces is transmitted mutually.
5, Radio Network System as claimed in claim 4 is characterized in that:
Described mobile terminal equipment further comprises: the protocol conversion module that links to each other with message processing module with main control module, the third antenna interface that links to each other with message processing module respectively;
Message processing module further will send to protocol conversion module from the information that first antennal interface receives and carry out protocol conversion, and information sends to cellular network base station by the third antenna interface after the conversion that protocol conversion module is returned; Maybe will send to protocol conversion module and carry out protocol conversion, and information sends to dual-mode terminal by first antennal interface after the conversion that protocol conversion module is returned from the information that the third antenna interface receives;
Described protocol conversion module links to each other with message processing module with main control module respectively, be used under master control module controls: the information that receives from first antennal interface that will be transmitted by message processing module is converted to the form that cellular network base station can receive and returns to message processing module; Or the information that receives from the third antenna interface that will transmit by message processing module, be converted to the form that the broadband wireless of dual-mode terminal eats dishes without rice or wine to receive and return to message processing module.
6, Radio Network System as claimed in claim 1 is characterized in that: described cellular network base station is the cellular network base station with packet radio voice service, mobile video telephone, mobile flow medium service bearing function.
7, Radio Network System as claimed in claim 1 is characterized in that: grid network is formed in a plurality of mobile broadband wireless access networks networks base station in this system, and formula wireless self-networking agreement is answered in this grid network employing earlier.
8, a kind of changing method of dual-mode terminal is characterized in that: be applied to the described network system of claim 1, when dual-mode terminal was carried out business procedure under the broadband wireless access pattern, its handoff procedure comprised:
A, judge whether to carry out mode switch, if execution in step B then; Otherwise return this step;
B, switch to the wireless self-networking mode of operation, be linked into mobile broadband wireless access networks network base station or the cellular network base station that mobile terminal equipment can insert, continue professional by the mobile terminal equipment in the system.
9, changing method as claimed in claim 8, it is characterized in that, the described method that need carry out mode switch that judges whether of steps A is: whether dual-mode terminal detects the broadband wireless state of eating dishes without rice or wine in real time,, judge whether to carry out mode switch less than switching threshold according to wireless wide band signal;
Or dual-mode terminal disposes according to the user, determines whether to carry out mode switch;
Or mode selector switch or interface switching are set on dual-mode terminal, and select according to the user, determine whether to carry out mode switch.
10, changing method as claimed in claim 9, it is characterized in that: dual-mode terminal disposes according to the user, is surpassing intended service during the time, determines to carry out mode switch; Or when being less than scheduled volume, determine to carry out mode switch according to user's configuration service data volume.
11, changing method as claimed in claim 8 is characterized in that: described dual-mode terminal is under the wireless self-networking pattern, and the employing broadband wireless is eated dishes without rice or wine and mobile terminal equipment carries out information interaction;
The described method that is linked into the mobile broadband wireless access networks network base station that mobile terminal equipment can insert by the mobile terminal equipment in the system of step B is:
Mobile terminal equipment will directly be transmitted to mobile broadband wireless access networks network base station from the information that the broadband wireless of dual-mode terminal eats dishes without rice or wine to receive; The information that will receive from mobile broadband wireless access networks network base station directly is transmitted to dual-mode terminal.
12, changing method as claimed in claim 8 is characterized in that: described dual-mode terminal is under the wireless self-networking pattern, and the employing broadband wireless is eated dishes without rice or wine and mobile terminal equipment carries out information interaction;
This method further comprises:
The information that mobile terminal equipment will eat dishes without rice or wine to receive from the broadband wireless of dual-mode terminal is converted to the form that cellular network base station can receive and is transmitted to cellular network base station; The information that will receive from cellular network base station is converted to the form that the broadband wireless of dual-mode terminal eats dishes without rice or wine to receive and is transmitted to dual-mode terminal.
13, changing method as claimed in claim 8, it is characterized in that this method also comprises: in the dual-mode terminal initialization procedure, insert cellular network and broadband wireless network, if broadband wireless access is unsuccessful, then adopt wireless self-networking pattern access band wireless network.
14, changing method as claimed in claim 13, it is characterized in that, this method also comprises: if at predetermined search in the time or when reaching the predetermined search number of times, dual-mode terminal all can't the access band wireless network by broadband wireless access pattern and wireless self-networking pattern, and broadband wireless network then stops search.
15, changing method as claimed in claim 8, it is characterized in that, this method also comprises: in advance according to user's needs, all wireless data services of dual-mode terminal support are divided into: important service and non-important service, or the difference of a business called out be divided into important service and non-important service;
Eat dishes without rice or wine to carry out important service by Cellular Networks, carry out non-important service by the broadband wireless access pattern.
16, changing method as claimed in claim 15 is characterized in that, when Cellular Networks eats dishes without rice or wine to carry out in the important service process, in the time of need carrying out mode switch, starts broadband wireless and eats dishes without rice or wine, and is directly switch to the wireless self-networking mode of operation.
17, changing method as claimed in claim 15, it is characterized in that, when Cellular Networks eats dishes without rice or wine to carry out in the important service process, in the time of need carrying out mode switch, starting broadband wireless eats dishes without rice or wine, switch to the broadband wireless access pattern earlier, when the broadband wireless access pattern is unsuccessful, switch to the wireless self-networking mode of operation.
18, as claim 16 or 17 described changing methods, it is characterized in that, eat dishes without rice or wine to carry out in the important service process, detect the Cellular Networks state of eating dishes without rice or wine in real time, during whether less than switching threshold, determine whether to carry out mode switch according to the Cellular Networks signal when Cellular Networks;
Or dual-mode terminal disposes according to the user, determines whether to carry out mode switch;
Or mode selector switch or interface switching are set on dual-mode terminal, and select according to the user, determine whether to carry out mode switch.
19, changing method as claimed in claim 18, it is characterized in that: dual-mode terminal disposes according to the user, is surpassing intended service during the time, determines to carry out mode switch; Or when being less than scheduled volume, determine to carry out mode switch according to user's configuration service data volume.
As claim 8,16 or 17 described changing methods, it is characterized in that 20, the described method that switches to the wireless self-networking mode of operation is:
Broadband wireless is eated dishes without rice or wine to switch to the wireless self-networking mode of operation, and carry out the wireless self-networking route finding process, after the route response that mobile terminal equipment returns in receiving network, move terminal equipment with this and connect.
21, a kind of mobile terminal equipment is characterized in that: comprise main control module, message processing module and two antennal interfaces at least;
Wherein, first antennal interface is used to adopt wireless self-networking pattern and mode mobile terminal to communicate; Second antennal interface is used to adopt broadband wireless access pattern and mobile broadband wireless access networks network base station to communicate;
Described main control module links to each other with message processing module, is used for the control to message processing module;
Described message processing module links to each other with two antennal interfaces with main control module respectively, is used under the control of main control module, and the information that receives from two antennal interfaces is transmitted mutually.
22, mobile terminal equipment as claimed in claim 21 is characterized in that:
Described mobile terminal equipment further comprises: the protocol conversion module that links to each other with message processing module with main control module, the third antenna interface that links to each other with message processing module respectively;
Message processing module further will send to protocol conversion module from the information that first antennal interface receives and carry out protocol conversion, and information sends to cellular network base station by the third antenna interface after the conversion that protocol conversion module is returned; Maybe will send to protocol conversion module and carry out protocol conversion, and information sends to dual-mode terminal by first antennal interface after the conversion that protocol conversion module is returned from the information that the third antenna interface receives;
Described protocol conversion module links to each other with message processing module with main control module respectively, be used under master control module controls: the information that receives from first antennal interface that will be transmitted by message processing module is converted to the form that cellular network base station can receive and returns to message processing module; Or the information that receives from the third antenna interface that will transmit by message processing module, be converted to the form that the broadband wireless of dual-mode terminal eats dishes without rice or wine to receive and return to message processing module.
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| CNB2006100725618A CN100459812C (en) | 2006-04-07 | 2006-04-07 | Wireless network system, its switching method and mobile station-transferring equipment |
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