CN1741658A - A multimode mobile communication terminal and multimode switching method thereof - Google Patents
A multimode mobile communication terminal and multimode switching method thereof Download PDFInfo
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Abstract
A multimode mobile communication terminal consists of physical hardware including data processing system , peripheral interface , man-machine boundary layer and radio frequency transceiving module ; and software layer including mergence layer ,route function module of unmerged layer and wire-in technique identification table . Its multimode converting method includes writing wire-in technique identification into storage , fetching wire in technique and sending it to route module by merging layer and routing said technique in each unmerged layer, selecting network , finding cell for resident , returning confirmation message back to let terminal reside normally.
Description
Technical field
The present invention relates to moving communicating field, particularly relate to a kind of multimode mobile communication terminal and multi-mode communication method thereof, be multiple existing mobile communication mode, comprise between the terminal of any communication mode combinations of bimodulus and each communication pattern and select method for communicating.
Background technology
Second generation mobile communications network GSM/GPRS and CDMA (2G) used since the eighties, develop into now, whole world mobile subscriber's sum has reached more than 1,000,000,000 families, and along with the continuous increase of user to business demand, existing second generation mobile communication system has been difficult to satisfy the requirement of high-speed data.Simultaneously, it is the 3-G (Generation Three mobile communication system) (3G) of standard that mobile communication technology has developed into WCDMA, TD-SCDMA and CDMA2000 from the existing second generation, 3-G (Generation Three mobile communication system) satisfies the quality of service request of mass data business, and improved network capacity, support to multimedia service, is with a wide range of applications from the speech to the grouped data.
Second generation mobile communication terminal basic structure comprises: radio-frequency module, Analog Baseband chip and digital baseband chip and some peripheral circuits, its critical piece is two microprocessors on the digital baseband chip, one is the DSP microprocessor, and another is risc processor (micro-control unit MCU).DSP is responsible for finishing functions such as the modulation, channel coding/decoding, speech coding/decoding, encrypting and decrypting of baseband signal.Risc processor is responsible for the process user interface, and the radio protocol stack layer of terminal high level also moves on this processor.
The radio protocol stack layer of terminal is the core of whole terminal, mainly comprises five parts, is divided into man-machine interface layer (MMI), layer 1, and layer 2 and layer 3 and data communication software bag, wherein:
The man-machine interface layer: be used for man-machine interface, as the input of user's keyboard, mobile phone state and call handling process show, the management of SIM card and electronics book etc.
Layer 3: be divided into radio resource (RR), mobile management layer (MM), call control layer (CM).Wherein radio resource is responsible for the foundation maintenance of Radio Link and is discharged; The mobile management layer is responsible for functions such as location registers, authentication, and call control layer is finished with call establishment and kept relevant task.
Layer 2: i.e. data link layer, it has defined various data transmission structure, and logarithm reportedly is input into row control.
Layer 1: be to carry out bottom functions such as cell selecting, frame synchronization, power control in conjunction with upper layer software (applications).
The data communication software bag: mainly be to be used for providing terminal adapting function for the transparent mode/non-transparent mode of simultaneous asynchronous data transmissions, it has comprised relevant AT command module.
Because second generation mobile communication only provides voice service, so its control is fairly simple, and the calling party connects inner speech path after receiving the ALERTING message that the other side transmits, and gets final product and to side communication.
3G (Third Generation) Moblie terminal primary structure comprises transaction processing system, wireless access system and peripheral interface three parts.Significantly different with second generation mobile communication terminal is that transaction processing system and wireless access system overlap independently upward realization of central processing unit (CPU) two respectively.
The structure of wireless access system has kept the structure of GSM/GPRS epoch DSP+MCU, and DSP finishes baseband functions, and MCU realizes high-rise radio protocol stack layer.
The radio protocol stack layer structure of 3G (Third Generation) Moblie terminal is divided into Access Layer (AS) and Non-Access Stratum (NAS).
Access Layer relates generally to wireless air interface, comprises layer 1, layer 2 and layer 3.
Wherein:
Layer 1: promptly the physical hardware key-course is responsible for the transmission and the reception of base band signal process and radiofrequency signal, finishes power control, Cell searching, inserts several operations at random.
Layer 2: i.e. data link layer can be divided into media access control layer (MAC), Radio Link Management layer (RLC), grouped data convergence layer (PDCP) and broadcast/group broadcast key-course (BMC) again.
Layer 3: promptly radio resource (RRC) is the control core of whole radio protocol stack, between radio resource (RRC) and Radio Link Management layer (RLC), media access control layer (MAC), the physical hardware key-course control interface is arranged all, and provide service to Non-Access Stratum (NAS) by special-purpose control (Dc), general controls (Gc), announcement (Nt) three interfaces.
Non-Access Stratum mainly comprises mobile management layer (MM) and call management layer (CM).Non-Access Stratum logically can be divided into two territories, i.e. circuit domain (CS) and packet domain (PS).
Circuit domain is mainly handled traditional Circuit Service, and as speech and circuit type short message, and packet domain is mainly handled the classes of packets business.
Call management layer (CM) mainly is the service-oriented function, and it is responsible for the user various terminal traffics are provided, and comprises the miscellaneous service entity, as calling out control and Short Message Entity.
The radio protocol stack layer of 3G (Third Generation) Moblie network is compared with the radio protocol stack layer of second generation mobile communications network, and it alters a great deal, and this mainly is because very big variation has taken place air interface.What second generation mobile communication system GSM/GPRS adopted is Frequency Division Duplexing (FDD) (FDD) time division multiple access mechanism; And WCDMA introduces the mechanism of code division multiple access (CDMA) in the 3-G (Generation Three mobile communication system) on the basis of GSM/GPRS, and TD-SCDMA adopts time division duplex (TDD), the mechanism of time division multiplexing and code division multiple access.
At present, 3G (Third Generation) Moblie network (3G) has obtained a large amount of research, and commercial application has been arranged, but existing second generation mobile communication system (2G) is widespread usage in the whole world, so, in very long a period of time in future, second generation mobile communication system will and be deposited with the 3G (Third Generation) Moblie network, the zone of the overlapping covering of plurality of communication systems therefore can occur.
Because existing cordless communication network; very big difference is all arranged from the physical layer to the upper-layer protocol technically; mobile operator is in order to save the cost of laying network; hope can be from existing network to other network agile transition; mixed networking, for the terminal use provides service, and mobile phone users wishes can both obtain no matter thereunto normal service; so mobile terminal multi-mode changes into the trend into the terminal development.
Under the promotion of technological incorporation, (International TelecommunicationUnion, ITU) global unified third generation wireless communication standard WCDMA, CDMA2000 and TD-SCDMA have been determined in conference in International Telecommunications Union.3-G (Generation Three mobile communication system) is compared with second generation mobile communication system, each standard is very different on physical hardware and physical hardware key-course, but in the radio protocol stack standard, accomplished unanimity as far as possible, and also stipulate for the switching between system, yet carry out the transition to third generation CDMA2000, WCDMA and TD-SCDMA from second generation GSM/GPRS, on business characteristic, network capacity and mentality of designing, all there is very big difference, so will support multimode terminal to also have very big difficulty in the fusion of all layers of protocol stack.
Summary of the invention
The object of the present invention is to provide a kind of multi-module mobile terminal; it supports the fusion of various modes communication network on the protocol stack different levels; comprise that protocol adaptation layers merges, Non-Access Stratum merges (NAS), Access Layer merges (AS), realize the terminal multimodeization flexibly.
Another object of the present invention is to provide a kind of multi-module mobile terminal mode conversion method, utilization is stored in the sign-access technology (RAT) of the Radio Access Network in the multi-module mobile terminal memory, mobile communication protocol layer after routing function module and the fusion realizes that portable terminal is at a plurality of mobile network communications.
For achieving the above object, the present invention proposes the technical scheme of following solution:
A kind of multimode mobile communication terminal comprises physical hardware and software layer, and physical hardware comprises data handling system, peripheral interface, human-machine interface layer and radio-frequency (RF) receiving and transmission module, is used to store the memory of the data of software layer; Described memory comprises that described software layer obtains reading interface and can changing the interface of writing of current access technology of access technology.
Described software layer comprises access technology label table, routing function module, fused layer and fused layer not.
The routing function module has been used to encapsulate the identity function layer of each different access technologies, and at fused layer and route all communication informations between them between the fused layer not.
The access technology label table, the access technology of the mobile communications network that the sign current mobile terminal is resident, access technology identifies the access technology of the resident communication network of unique identification current mobile terminal, and sends access technology to the routing function module.
Fused layer is exactly the identity function layer of different communication systems, realizes by a functional module or several functional module with coupling, merges the back to different communication systems, can support the function under each system simultaneously according to the access technology sign as foundation.After the fusion, guarantee that also each communication system can switch mutually.
Fused layer not, i.e. the system protocol layer that does not merge, second generation mobile communication system and each system protocol interlayer of 3-G (Generation Three mobile communication system) communication pattern are isolated mutually in fused layer not, work alone.
Further, described fused layer can comprise the protocol stack adaptation layer of software layer, and described not fused layer comprises radio protocol stack layer and the physical hardware key-course in the software layer, and described routing function module is between protocol stack adaptation layer and radio protocol stack layer.
Perhaps, described fused layer can comprise the protocol stack adaptation layer of software layer and the Non-Access Stratum of radio protocol stack layer, described not fused layer comprises Access Layer, the physical hardware key-course of radio protocol stack layer, and described routing function module is between Non-Access Stratum and Access Layer.
Perhaps, described fused layer comprises the radio resource of the Access Layer of the Non-Access Stratum of protocol stack adaptation layer, radio protocol stack layer of software layer and radio protocol stack layer, described not fused layer comprises the physical hardware key-course in the radio protocol stack layer and the data link layer of Access Layer, and described routing function module is between the radio resource and physical hardware key-course of Access Layer.
A kind of multi-module mobile terminal conversion method comprises the steps:
Step 1: mobile terminal-opening, after the driver module initialization, the physical hardware of terminal starts, and portable terminal writes user-selected access technology sign in the memory by writing interface, or default access technology sign is set;
Step 2: fused layer goes to obtain user-selected access technology by the interface of reading by memory, and sends described access technology to the routing function module;
Step 3: portable terminal is selected network according to current access technology, seeks sub-district and resident, returns acknowledge message, and terminal is normally resident;
Step 4: after portable terminal is normally resident, the radio resource of manually selecting the network of another kind of access technology or radio protocol stack layer as the user has been chosen the network of another access technology by the sub-district gravity treatment, and the access technology sign is updated/written to memory;
Step 5: human-machine interface module or radio resource notice routing function module, access technology changes, the travelling performance management level of notice radio protocol stack layer, legacy network is nullified, the notice driver module is finished physical hardware and is switched, physical hardware switches to be finished, and software layer repeating step one to three begins at new network resident again.
The invention has the beneficial effects as follows: utilize the terminal provided by the invention can be in the network of second generation mobile communication system and 3-G (Generation Three mobile communication system) coexistence, manually be chosen as the center with the user, select residing network to obtain service, also can be chosen as the center automatically, select residing network to obtain service with terminal.This terminal can require to carry out adaptively the operation of mode switch inter-network according to user, network indication or user interface, also can carry out pattern recognition automatically and switch the inter-network operation, the user can be according to circumstances different, consider the different needs of different regions, and use different communication patterns.
Description of drawings
Fig. 1 is the network distribution schematic diagram;
Fig. 2 is a multimode mobile communication terminal hardware structure diagram of the present invention;
Fig. 3 is embodiment one a multi-module mobile terminal software configuration schematic diagram;
Fig. 4 is embodiment one a multi-module mobile terminal routing function module workflow diagram;
Fig. 5 is embodiment two multi-module mobile terminal software configuration schematic diagrames;
Fig. 6 is embodiment two multi-module mobile terminal routing function module workflow diagrams;
Fig. 7 is embodiment three multi-module mobile terminal software configuration schematic diagrames;
Fig. 8 is embodiment three multi-module mobile terminal routing function module workflow diagrams.
Embodiment
The detailed description of carrying out at the preferred embodiments of the present invention below.In following present embodiment, mainly be at GSM/GPRS, the situation of the many mobile communication system coexistences of TD-SCDMA and WCDMA, but the present invention is suitable for the situation of any many mobile communication system coexistences except above-mentioned mobile communications network equally.
Embodiment one:
Terminal of the present invention is made up of physical hardware and software layer.
Physical hardware is that many mobile communication system communicate, and is implemented in two or more mobile communications networks and obtains service physical hardware structure.
Physical hardware structure such as Fig. 2 comprise data handling system 200, peripheral interface 210, the human-machine interface layer 220 and the radio-frequency (RF) receiving and transmission module 230 of the window that access technology selects are provided for the user.
Data handling system can comprise baseband processor 201, supports the chip 202 based on MODEM of GSM/TD-SCDMA/WCDMA, is used to finish the data signal processor (DSP) 203 of baseband functions and is used to store the memory 204 of the data of software layer.
Peripheral interface 210 comprises various standard peripheral, as keyboard, and loud speaker, peripheral hardware standard interfaces (not marking) such as earphone.
This enforcement software layer structure comprises as shown in Figure 3: human-machine interface module (not marking), access technology label table 340, driver module 330, routing function module 300, fused layer 310 and fused layer 320 not.
Human-machine interface module is used for when the user selects access technology, and this access technology information is passed to transaction processing system;
Fused layer 310, in the present embodiment, fused layer comprises protocol stack adaptation layer 311, just uses the protocol stack adaptation layer, the protocol stack of encapsulation different communication systems;
Fused layer 320, in the present embodiment, comprise the radio protocol stack layer 321 and the physical hardware key-course 322 of each communication system;
Comprise Non-Access Stratum and Access Layer in the radio protocol stack layer 321.Non-Access Stratum comprises connection management layer and travelling performance management level.Access Layer comprises radio resource and data link layer.Data link layer comprises Radio Link Management layer, medium Access Layer and GSM/GPRS data Layer.
Access technology sign (RAT) table 340, the access technology of the mobile communications network that the sign current mobile terminal is resident, the access technology of the communication network that access technology sign unique identification current mobile terminal is resident.
Access technology is identified at the definition in the memory 204, as shown in Table 1 and Table 2.
Table 1 access technology marking variable table
| Variable-definition | Describe |
| v_Current_Rat | The access technology of storing the resident wireless network of current terminal |
Table 2 access technology sign macrodefinition table
| Macrodefinition | Numerical value | Describe |
| NO_SPECIFIC_RAT | ?0x00 | Access network does not indicate |
| RAT_GSM | ?0x01 | The GSM/GPRS access network |
| RAT_TDSCDMA | ?0x02 | The TD-SCDMA access network |
| RAT_WCDMA | ?0x03 | The WCDMA access network |
| … | ?… | Other extendible access networks |
In the present invention, the access technology sign of various mobile communication is stored in the access technology label table 340 of memory 204, and provide external read-write interface MC_READ_RAT and MC_WRITE_RAT, this read-write interface is through the interface of driver module 330 encapsulation, can directly be routed functional module 300 and call.
Read interface MC_READ_RAT, routing function module 300 can be passed through this interface, obtains the access technology sign of the resident wireless network of current terminal.
Write interface MC_WRITE_RAT, according to different switch modes, have only a module can change current access technology: for the portable terminal of manual switchover, have only human-machine interface layer 220 can change current access technology, when mobile phone users has selected to want resident mobile communications network in human-machine interface layer 220, human-machine interface layer 220 will be called MC_WRITE_RAT, and current access technology sign is write in the memory 204; For the portable terminal that automaticallyes switch, have only the radio resource in the radio protocol stack layer can change current access technology, when radio resource changes current resident mobile network's type or networking command portable terminal and switches to another kind of wireless network by the sub-district gravity treatment, radio resource can call MC_WRITE_RAT, and current access technology sign is write in the memory 204; To the portable terminal of manual switchover and automatic switchover combination, human-machine interface layer 220 and radio resource can change current access technology.
Present embodiment provides a kind of and has merged the multimode terminal solution in the protocol stack adaptation layer:
Described fused layer 310 comprises protocol stack adaptation layer 311, is used to shield not fused layer 320, for human-machine interface module provides unified interface.
Fused layer 320 does not comprise radio protocol stack layer 321, and described radio protocol stack layer 321 comprises Non-Access Stratum (NAS) and Access Layer (AS).
As shown in Figure 3, routing function module 300 in the present embodiment is at fused layer 310 and not between the fused layer 320, be between protocol stack adaptation layer 311 and the radio protocol stack layer 321, described terminal merges in protocol stack adaptation layer 311 and human-machine interface module, and it is to be quick and the easiest a kind of multimode terminal solution in solution of the present invention.Radio protocol stack layer 321 comprises GSM/GPRS radio protocol stack layer, WCDMA radio protocol stack layer and the TD-SCDMA radio protocol stack layer that independently separates respectively, and has respectively and corresponding physical hardware key-course 322 of GSM/GPRS radio protocol stack layer, WCDMA radio protocol stack layer and TD-SCDMA radio protocol stack layer and physical hardware.Protocol stack adaptation layer 311 is as encapsulation radio protocol stack layer, application oriented one deck, itself broken away from third generation partnership project (Third Generation Partnership Projects, the difference of 3GPP) describing on the standard, so, just can provide service to the user as long as by unified protocol stack adaptation layer 311 and human-machine interface module.
In the present embodiment, routing function module 300 functions are as shown in Figure 4:
From protocol stack adaptation layer 311 to radio protocol stack layer 321 direction: routing function module 300 is according to current access technology, give the radio protocol stack layer of the GSM/GPRS pattern that independently separates respectively the forwards of access technology sign, perhaps the radio protocol stack layer of TD-SCDMA pattern, perhaps the radio protocol stack layer of WCDMA.
From radio protocol stack layer 321 to protocol stack adaptation layer 311 directions: direct transparent forwarding message.
Further specify the course of work of present embodiment below in conjunction with accompanying drawing 1,3 and 4:
1) when mobile phone users is pressed the start of start key by human-machine interface layer 220, driver module 204 initialization, the physical hardware of terminal starts, the user can select to think resident mobile communications network, also can select network default setting or that last time is resident, as shown in Figure 1, mobile phone users has been selected the TD-SCDMA network.
Selected to want resident mobile communications network on human-machine interface layer 220 when mobile phone users, human-machine interface module will call MC_WRITE_RAT, and current access technology sign is write in the access technology label table 340 of memory 204.
2) protocol stack adaptation layer 311 goes to obtain user-selected access technology by the interface MC_READ_RAT that reads by memory 204 by access technology label table 340;
3) protocol stack adaptation layer 311 sends access technology to routing function module 300;
31) routing function module 300 judge the direction of message be from protocol stack adaptation layer 311 directions to radio protocol stack layer 321 direction, further judge access technology;
32) if the GSM/GPRS access technology, then route is given GSM/GPRS radio protocol stack layer; If the WCDMA/TD-SCDMA access technology, then route is given WCDMA/TD-SCDMA radio protocol stack layer;
4) if the start user selects is the TD-SCDMA network, then the travelling performance management level of TD-SCDMA radio protocol stack begin network selection procedures, promptly select public land mobile network (publicland mobile network, PLMN process;
5) network that provides according to the travelling performance management level of TD-SCDMA radio resource is sought the sub-district, and as shown in Figure 1, can find mobile cell 5, mobile cell 18, mobile cell 19 and mobile cell 20 this moment.Radio resource is attempted the strongest sub-district of retention signal, and separates the system message of reading this sub-district, resident success, and radio resource returns acknowledge message can for the travelling performance management level, and terminal is normally resident.
Further, the user can also change current access technology by human-machine interface layer 220, for example, after the user selects the TD-SCDMA network, change to the GSM/GPRS network, select the GSM/GPRS network on human-machine interface layer 220, human-machine interface module will call MC_WRITE_RAT, and current access technology sign is write in the memory 204.321 beginning of radio protocol stack layer are at the log off procedure of original TD-SCDMA network, and terminal begins to close the hardware environment of TD-SCDMA.
After log off procedure finishes:
1) the GSM/GPRS physical hardware starts.
2) protocol stack adaptation layer 311 is read the access technology that interface MC_READ_RAT goes to obtain current terminal according to what memory 204 provided.
3) protocol stack adaptation layer 311 sends access technology message to routing function module 300, and the GSM/GPRS access technology that routing function module 300 is selected according to the user starts GSM/GPRS radio protocol stack layer;
4) the travelling performance management level of GSM/GPRS are selected the GSM/GPRS network, promptly select the PLMN process.
5) network that provides according to the travelling performance management level of GSM/GPRS radio resource, terminal begin one and seek the process of sub-district at new wireless access network, and as shown in Figure 1, the sub-district that find this moment is a mobile cell 11, mobile cell 12 and mobile cell 14.When resident in the success of the strongest sub-district of signal and behind the GSM/GPRS network registry, mobile phone users will obtain the service of second generation GSM/GPRS in the network of selecting.
Embodiment two:
In the present embodiment, the hardware of described terminal is identical with the hardware of embodiment one, and this enforcement software layer structure comprises human-machine interface module, access technology label table 340, driver module 330, routing function module 300, fused layer 310 and fused layer 320 not.
Different is, as shown in Figure 5, fused layer 310 comprises the Non-Access Stratum 412 of radio protocol stack layer, and protocol stack adaptation layer 411, and promptly described terminal has only a shared Non-Access Stratum 412 and a shared protocol stack adaptation layer 411.
The radio protocol stack layer also comprises Access Layer 421.Described Non-Access Stratum comprises connection management layer and travelling performance management level.Access Layer comprises radio resource and data link layer.Data link layer comprises Radio Link Management layer, medium Access Layer and GSM/GPRS data Layer.
Fused layer 320 does not comprise Access Layer 421 and physical hardware key-course 422.
Described Non-Access Stratum 412 comprises connection management layer and travelling performance management level.
Described Access Layer 421 comprises independently GSM/GPRS Access Layer, WCDMA/TD-SCDMA Access Layer independently, and have respectively and GSM/GPRS Access Layer, the corresponding physical hardware key-course 422 of WCDMA/TD-SCDMA Access Layer and physical hardware.
Described GSM/GPRS Access Layer comprises GSM/GPRS radio resource and GSM/GPRS data link layer.The WCDMA/TD-SCDMA Access Layer comprises WCDMA/TD-SCDMA radio resource and WCDMA/TD-SCDMA data link layer.
Accomplish the fusion of Non-Access Stratum 412 when multimode terminal, be that multimode terminal uses a Non-Access Stratum to come while support terminal user resident at each different wireless access network, when obtaining service, can utilize the routing function module 300 in the present embodiment to encapsulate Access Layer 421, physical hardware key-course 422 and the physical hardware that does not also merge, in the present embodiment, routing function module 300 is between Non-Access Stratum 412 and Access Layer 421.
Non-Access Stratum 412 is realized requirement on all standards according to the 3GPP standard, when different standards has different the requirement in realization, Non-Access Stratum 412 can call the access technology that interface MC_READ_RAT goes to obtain current terminal of reading that memory 204 provides, and carries out different actions according to different access technologies in different communication networks again.
The course of work of routing function module 300 is as shown in Figure 6:
When 412 directions are transmitted from Access Layer 421 to Non-Access Stratum, after further judging according to current access technology and network domains (CN Domain), routing function module 300 is transmitted to the circuit domain or the packet domain of Non-Access Stratum 412.
Further specify the course of work of present embodiment below in conjunction with accompanying drawing 1,5 and 6:
1) when mobile phone users is pressed the start of start key by human-machine interface layer 220, driver module 330 initialization, the physical hardware of terminal starts, the user can select to think resident mobile communications network, also can select network default setting or that last time is resident, for example mobile phone users has been selected the WCDMA network.Human-machine interface module will call MC_WRITE_RAT, and current access technology sign is write in the memory 204.
3) protocol stack adaptation layer 411 is read the access technology that interface MC_READ_RAT goes to obtain current terminal according to what memory 204 provided, and sends described access technology to Non-Access Stratum 412;
4) Non-Access Stratum 412 passes to routing function module (300) to the access technology sign after obtaining the access technology sign;
41) routing function module 300 judges that the direction of message is 421 directions from Non-Access Stratum 412 to Access Layer, further judges access technology; If the GSM/GPRS access technology, then route is given the GSM/GPRS radio resource; If the WCDMA/TD-SCDMA access technology, then route is given the WCDMA/TD-SCDMA radio resource;
42) routing function module 300 judges that the direction of message is 412 directions from Access Layer 421 to Non-Access Stratum, and routing function module 300 is transmitted to the CS management domain or the PS management domain of Non-Access Stratum according to current access technology and network domains (CN Domain).
5) access technology and the network that provide according to the travelling performance management level of WCDMA radio resource, terminal begins the process that a wireless access network is sought the sub-district, as shown in Figure 1, finds after sub-district 13, sub-district 16, the sub-district 17, select normal resident sub-district, obtain the service of WCDMA network.
Embodiment three:
In the present embodiment, the hardware of described terminal is identical with the hardware of embodiment one, and this enforcement software layer structure comprises human-machine interface module, access technology label table 340, driver module 330, routing function module 300, fused layer 310 and fused layer 320 not.
Different is, as shown in Figure 7, fused layer comprises radio resource 713, the Non-Access Stratum 712 of the Access Layer of radio protocol stack layer, and protocol stack adaptation layer 711, be that described terminal merges in radio resource 713, Non-Access Stratum 712 and the protocol stack adaptation layer 711 of Access Layer, the system that is to say can switch between the functional module between radio resource 713, Non-Access Stratum 712 and the protocol stack adaptation layer 711 of Access Layer mutually.
Comprise Non-Access Stratum 712 and Access Layer in the radio protocol stack layer.Non-Access Stratum 712 comprises connection management layer and travelling performance management level.Access Layer comprises radio resource and data link layer.Data link layer comprises Radio Link Management layer, medium Access Layer and GSM/GPRS data Layer.
Fused layer 320 does not comprise the data link layer of physical hardware key-course 722 and Access Layer.
The course of work of routing function module 300 is as shown in Figure 8:
A) judge type of message, if radio resource 713 message then route give radio resource 713;
B) judge type of message,, carry out following process if data-link layer message is then judged type of message:
If data management layer message, then route is given the data management layer of GSM/GPRS functional layer; Otherwise judgement type of message; If GSM/GPRS Radio Link Management layer message, then route is given the Radio Link Management layer of GSM/GPRS functional layer; Otherwise, judge type of message, if the medium access layer information of WCDMA/TD-SCDMA functional layer, then route is given the medium Access Layer of WCDMA/TD-SCDMA functional layer; Otherwise, carry out fault processing.
Otherwise the routing function module is judged the direction of message, if message be radio resource 713 from Access Layer to physical hardware key-course 722 directions, then judge access technology, and give radio resource 713 according to the access technology route.
Described Access Layer comprises the radio resource 713 that plurality of communication schemes merges, and GSM/GPRS data link layer independently respectively, the WCDMA/TD-SCDMA data link layer, and having respectively and GSM/GPRS data link layer, WCDMA data link layer and TD-SCDMA data link layer corresponding GSM/GPRS physical hardware key-course and WCDMA/TD-SCDMA physical hardware key-course, and corresponding physical hardware.
The GSM/GPRS data link layer comprises GSM/GPRS wireless chain control layer, GSM/GPRS medium Access Layer and GSM/GPRS data Layer.
The WCDMA/TD-SCDMA data link layer comprises WCDMA/TD-SCDMA wireless chain control layer and WCDMA/TD-SCDMA medium Access Layer.
When multimode terminal is accomplished Access Layer and above fusion, be that multimode terminal uses same Non-Access Stratum and 712 Access Layers to come the support terminal user resident at each different wireless access network, when obtaining service, can utilize this routing function module 300 to encapsulate physical hardware key-course 722 and the physical hardware that does not also merge.
In this enforcement, if having to specify, the user do not want resident wireless network, radio resource 713 will utilize the network of default setting, order physical hardware key-course 722 beginning search cell.When physical hardware and physical hardware key-course 722 are worked in a kind of pattern, have the function that to monitor different cordless communication networks simultaneously.
As the part of Access Layer, data link layer mainly is positioned at user's face, below radio resource 713 and above the physical layer key-course 722, for portable terminal provides data transfer management.
In second generation GSM/GPRS, the wireless chain control layer of data link layer (RLC), medium Access Layer (MAC) and data Layer (DL), the data transfer management of responsible respectively packet domain and circuit domain, the management of packet domain be at Temporary Block Flow (Temporary Block Flow, TBF); The management of circuit domain be at the link access protocol on the Dm channel (Link Access Protocol on the Dmchannel, LAPDm).In third generation TD-SCDMA and WCDMA, wireless chain control layer (RLC) and medium Access Layer (MAC) at radio bearer (Radio Bearer, RB) and transmission channel to packet domain and circuit domain unified management.
In the present invention, in the implementation based on the Access Layer fusion, do not require the fusion of data link layer, only require the fusion of the radio resource in the Access Layer, standard according to 3GPP, accomplish the fusion of radio resource, at first the standard of GSM will be upgraded to and can support gsm system to WCDMA system or TD-SCDMA system, and all versions in the 3GPP standard after the REL99 are all supported the switching from WCDMA or TD-SCDMA to GSM.Radio resource after merging under the GSM/GPRS pattern, is supported the measurement to TD-SCDMA and the adjacent sub-district of WCDMA, and can reside in TD-SCDMA or WCDMA network by the sub-district gravity treatment that vice versa.
Further specify the course of work of present embodiment below in conjunction with accompanying drawing 1,7 and 8 with automatically switching network access technology pattern:
Present embodiment is a kind of communication pattern of automatically switching network access technology, and when the user started shooting, terminal was by default access technology sign residing network, and terminal is according to the handover network of measuring when mobile in network as a result.
1) mobile terminal-opening, after driver module 330 initialization, the physical hardware of terminal starts, and portable terminal writes user-selected access technology sign in the memory by writing interface, or default access technology sign is set;
2) protocol stack adaptation layer 711 goes to obtain user-selected access technology by the interface of reading by memory 204, and send described access technology to Non-Access Stratum 712, send the radio resource 713 of Access Layer to by Non-Access Stratum 712, radio resource 713 sends routing function module 300 to;
3) the software layer portable terminal is selected network according to current access technology, seeks sub-district and resident, returns acknowledge message, and terminal is normally resident;
4) after portable terminal is resident, as persistent district 11, terminal can regularly be measured information of adjacent cells, and the intensity of the current sub-district that can search out by signal is sorted, and present sub-district is sorted as shown in table 3 by the intensity of signal.
Table 3 cell signal strength sequencing table
| The sub-district | Signal strength signal intensity | Access technology |
| ?15 | -69dB | ?TD-SCDMA |
| ?11 | -71dB | ?GSM/GPRS |
| ?14 | -73dB | ?GSM/GPRS |
| ?12 | -75dB | ?GSM/GPRS |
| ?16 | -77dB | ?WCDMA |
| ?18 | -79dB | ?TD-SCDMA |
| ?19 | -81dB | ?TD-SCDMA |
| ?13 | -83dB | ?WCDMA |
The cell list that the radio resource 713 of Access Layer provides according to physical hardware key-course 722, as shown in table 3, radio resource 713 can be attempted the stronger mobile cell 15 of a resident signal.
5) after terminal was normally resident on sub-district 15, radio resource 713 can call MC_WRITE_RAT, and the TD-SCDMA access technology of sub-district 15 sign is write in the memory.
6) radio resource 713 can be notified the routing function module information that 300 access technologies change.
7) radio resource 713 can be notified the travelling performance management level of radio protocol stack layer, legacy network is nullified, notice driver module (330) is finished physical hardware and is switched, and physical hardware switches finishes software layer repeating step 1)～3) restart at new network resident.
Because mobile communication still needs to experience a very long process from 2G to 3G, for making the user still can realize seamless access in a period of transition and enjoying up-to-date communication service, a great development trend that comprehensively becomes communication terminal of bimodulus and even multimode, multi-mode communication terminal provided by the invention has low cost; High-performance; The advantage of aspect such as flexibility more, it will change the unfavorable situation that terminal can only be used in the single communication network, therefore the compatibling problem between the various criterion also is resolved, and the user can be according to circumstances different, consider the different needs of different regions, and use different communication patterns.Also can allow simultaneously and can sell a plurality of provider customers with a kind of terminal, equipment manufacturers select to make multimode terminal of the present invention, make it become " universal product " and will obtain the coml success undoubtedly.
Embodiment among the present invention is just in order to make the auditor understand the detailed description that the present invention carries out better; it is not the qualification of scope that the present invention is protected; therefore, those of ordinary skills in the scope that does not break away from purport of the present invention to this bright change of making in protection scope of the present invention.
Claims (10)
1, a kind of multimode mobile communication terminal comprises physical hardware and software layer, and physical hardware comprises data handling system (200), peripheral interface (210), human-machine interface layer (220), and radio-frequency (RF) receiving and transmission module (230), it is characterized in that:
Described data handling system comprises the memory (204) of the data of storing described software layer; Described memory comprises that described software layer obtains reading interface and can changing the interface of writing of current access technology of access technology;
Described software layer comprises:
Fused layer (310), described terminal are in fused layer (310), and multi-mode communication mode common identical functions module by the difference of access technology sign, is done different processing to different communication systems;
Fused layer (320) not, described terminal plurality of communication schemes in fused layer (320) is not isolated between protocal layers mutually, works alone;
Routing function module (300), be positioned at described fused layer (310) and not between the fused layer (320), be used to encapsulate the identity function layer of each different access technologies, and at all communication informations between them of route between described fused layer (310) and the described not fused layer (320);
Access technology label table (340), the access technology of the mobile communications network that the sign current mobile terminal is resident.
2, according to the described multimode mobile communication terminal of claim 1, it is characterized in that, described fused layer (310) comprises the protocol stack adaptation layer (311) of software layer, described not fused layer (320) comprises radio protocol stack layer (321) and the physical hardware key-course (322) in the software layer, and described routing function module (300) is positioned between protocol stack adaptation layer (311) and the radio protocol stack layer (322).
3, multimode mobile communication terminal according to claim 1, it is characterized in that, described fused layer (310) comprises the protocol stack adaptation layer (511) of software layer and the Non-Access Stratum (512) of radio protocol stack layer, described not fused layer comprises Access Layer (521), the physical hardware key-course (522) of radio protocol stack layer, and described routing function module (300) is positioned between Non-Access Stratum (512) and the Access Layer (521).
4, multimode mobile communication terminal according to claim 1, it is characterized in that, described fused layer (310) comprises the radio resource (713) of the Access Layer of the Non-Access Stratum (712) of protocol stack adaptation layer (711), radio protocol stack layer of software layer and radio protocol stack layer, described not fused layer comprises the data link layer (721) and the physical hardware key-course (722) of the Access Layer in the radio protocol stack layer, and described routing function module (300) is positioned between the radio resource (713) and physical hardware key-course (722) of Access Layer.
According to each described multimode mobile communication terminal in the claim 1 to 4, it is characterized in that 5, the resident access technology of the current communication network of described change manually changes by described human-machine interface layer (220) for the user; The radio resource that perhaps is described radio protocol stack layer automaticallyes switch; Perhaps be that described human-machine interface layer (220) or described radio resource manually or automatically change.
6, a kind of multi-module mobile terminal conversion method is characterized in that, comprises the steps:
Step 1: mobile terminal-opening, after driver module (330) initialization, the physical hardware of terminal starts, and portable terminal writes the access technology sign in the memory by writing interface, or default access technology sign is set;
Step 2: fused layer (310) goes to obtain access technology by the interface of reading by memory (204), and sends described access technology to routing function module (300);
Step 3: portable terminal is selected network according to current access technology, seeks sub-district and resident, returns acknowledge message, and terminal is normally resident;
7, portable terminal conversion method according to claim 6 is characterized in that, also comprises the steps:
Step 4: after portable terminal is normally resident, the radio resource of manually selecting the network of another kind of access technology or radio protocol stack layer as the user has been chosen the network of another access technology by the sub-district gravity treatment, and the access technology sign is updated/written to memory (204);
Step 5: human-machine interface module or radio resource notice routing function module (300), access technology changes, the travelling performance management level of notice radio protocol stack layer, nullify at legacy network, notice driver module (330) is finished physical hardware and is switched, physical hardware switches to be finished, and software layer repeating step one to three begins at new network resident again.
8, according to claim 6 or 7 described multi-module mobile terminal conversion methods, it is characterized in that, select protocol stack adaptation layer (311) when described terminal and merge and radio protocol stack layer (321)) when not merging, described step 2 comprises following process:
Routing function module (300) is judged the direction of message, if message be from protocol stack adaptation layer (311) to radio protocol stack layer (321) direction, then judge access technology, and according to the Non-Access Stratum of access technology route to each communication pattern.
9, according to claim 6 or 7 described multi-module mobile terminal communication meanss, it is characterized in that, select the Non-Access Stratum (512) of radio protocol stack layer to merge and the Access Layer (521) of radio protocol stack layer when not merging when described terminal, described step 2 comprises following process:
Routing function module (300) is judged the direction of message, if message be from Non-Access Stratum (512) direction to Access Layer (521) direction, then judge access technology, and according to the radio resource of access technology route to each communication pattern.
According to claim 6 or 7 described multi-module mobile terminal communication meanss, it is characterized in that 10, physical hardware key-course (722) is not when merging if the radio resource of described terminal Access Layer (713) merges, described step 2 comprises following process:
Routing function module (300) is judged the direction of message, if message is that radio resource (713) from Access Layer is to physical hardware key-course (722) direction, then judge access technology, and give the radio resource of each communication pattern according to the access technology route.
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