CN100417264C - A multi-mode mobile communication terminal and a multi-mode conversion method thereof - Google Patents

Abstract

A multi-mode mobile communication terminal and a multi-mode conversion method thereof. Including physical hardware and software layers, the physical hardware includes a data processing system (200), a peripheral interface (210), a man-machine interface layer (220), a radio frequency transceiver module (230), and the data processing system (200) includes a memory (204) The software layer includes a fusion layer (310), a non-convergence layer (320), a routing function module (300) and an access technology identification table (340). After the terminal is turned on, the access technology identifier is written into the memory (204), and the fusion layer (310) reads the access technology through the memory (204) read interface and sends it to the routing function module (300). The module (300) routes the message of the access technology to each layer of the unconverged layer; the mobile terminal selects a network according to the current access technology, searches for a cell and resides there, returns a confirmation message, and the terminal normally resides; The provided multimode communication terminal has the advantages of low cost, high performance, greater flexibility and the like.

Description

A multi-mode mobile communication terminal and a multi-mode conversion method thereof

technical field

The present invention relates to the field of mobile communication, in particular to a multi-mode mobile communication terminal and a multi-mode communication method thereof. Choose the method of communication between.

Background technique

The second-generation mobile communication network GSM/GPRS and CDMA (2G) began to be used in the 1980s. Up to now, the total number of mobile users in the world has reached more than 1 billion. With the continuous increase of users' demand for services, the existing second Modern mobile communication systems have been difficult to meet the requirements of high-speed data. At the same time, mobile communication technology has developed from the existing second generation to the third generation mobile communication system (3G) based on WCDMA, TD-SCDMA and CDMA2000. The third generation mobile communication system meets the quality of service requirements of a large number of data services , and improve the network capacity, support from voice to packet data to multimedia services, has a wide range of application prospects.

The basic structure of the second-generation mobile communication terminal includes: radio frequency module, analog baseband chip and digital baseband chip, and some peripheral circuits. The main components are two microprocessors on the digital baseband chip, one is a DSP microprocessor, and the other is a RISC processor (Micro Control Unit MCU). DSP is responsible for completing the modulation and demodulation of baseband signals, channel encoding/decoding, voice encoding/decoding, encryption and decryption and other functions. The RISC processor is responsible for processing the user interface, and the wireless protocol stack layer at the upper level of the terminal also runs on the processor.

The wireless protocol stack layer of the terminal is the core of the entire terminal. It mainly includes five parts, which are divided into man-machine interface layer (MMI), layer 1, layer 2 and layer 3 and data communication software package, of which:

Human-machine interface layer: used for man-machine interface, such as user keyboard input, mobile phone status and call processing process display, SIM card and electronic book management, etc.

Layer 3: Divided into radio resource management layer (RR), mobile management layer (MM), and call control layer (CM). Among them, the radio resource management layer is responsible for the establishment, maintenance and release of wireless links; the mobile management layer is responsible for functions such as location registration and authentication; the call control layer completes tasks related to call establishment and maintenance.

Layer 2: The data link layer, which defines various data transmission structures and controls data transmission.

·Layer 1: Combined with the upper layer software to perform the underlying functions such as cell selection, frame synchronization, and power control.

·Data communication software package: It is mainly used to provide terminal adaptation function for transparent mode/non-transparent mode of asynchronous data transmission, which includes related AT command modules.

Because the second-generation mobile communication only provides voice services, its control is relatively simple. After receiving the ringing message from the other party, the calling party can communicate with the other party by connecting to the internal voice channel.

The main structure of the third-generation mobile communication terminal includes three parts: business processing system, wireless access system and peripheral interface. Significantly different from the second-generation mobile communication terminal, the business processing system and the wireless access system are implemented on two independent central processing units (CPUs).

The structure of the wireless access system retains the structure of DSP+MCU in the GSM/GPRS era. DSP completes the baseband function, and MCU realizes the high-level wireless protocol stack layer.

The wireless protocol stack layer structure of the third-generation mobile communication terminal is divided into an access layer (AS) and a non-access layer (NAS).

The access layer mainly involves the wireless air interface, including layer 1, layer 2 and layer 3.

in:

Layer 1: The physical hardware control layer is responsible for baseband signal processing and radio frequency signal transmission and reception, and completes power control, cell search, and random access operations.

Layer 2: The data link layer, which can be divided into media access control layer (MAC), radio link management layer (RLC), packet data convergence layer (PDCP) and broadcast/multicast control layer (BMC).

Layer 3: The radio resource management layer (RRC) is the control core of the entire wireless protocol stack, the radio resource management layer (RRC) and the radio link management layer (RLC), the media access control layer (MAC), and the physical hardware control layer There are control interfaces between them, and provide services to the non-access stratum (NAS) through three interfaces: dedicated control (Dc), general control (Gc), and notification (Nt).

The non-access layer mainly includes the mobile management layer (MM) and the call management layer (CM). The non-access stratum can be logically divided into two domains, the circuit domain (CS) and the packet domain (PS).

The circuit domain mainly deals with traditional circuit services, such as voice and circuit short messages, while the packet domain mainly deals with packet services.

The call management layer (CM) is mainly service-oriented. It is responsible for providing various terminal services for users, including various service entities, such as call control and short message entities.

Compared with the wireless protocol stack layer of the second generation mobile communication network, the wireless protocol stack layer of the third generation mobile communication network has changed greatly, which is mainly due to the great change in the air interface. The second-generation mobile communication system GSM/GPRS uses a frequency-division duplex (FDD) time-division multiple access mechanism; while the third-generation mobile communication system WCDMA introduces a code-division multiple access (CDMA) mechanism on the basis of GSM/GPRS , TD-SCDMA uses time division duplex (TDD), time division multiplexing and code division multiple access mechanisms.

At present, the third generation mobile communication network (3G) has received a lot of research and has commercial applications, but the existing second generation mobile communication system (2G) has been widely used in the world, so, in the long future For a period of time, the second-generation mobile communication system will coexist with the third-generation mobile communication network, so there will be areas where multiple communication systems overlap and cover.

Because the existing wireless communication network has a big difference in technology from the physical layer to the high-level protocol, mobile operators hope to be able to flexibly transition from the existing network to other networks in order to save the cost of laying out the network, hybrid networking , to provide services for terminal users, and mobile terminal users hope to obtain normal services no matter where they go. Therefore, multi-mode mobile terminals have become the trend of terminal development.

Driven by technology integration, the International Telecommunication Union (International Telecommunication Union, ITU) conference has determined the globally unified third-generation wireless communication standards WCDMA, CDMA2000 and TD-SCDMA. Compared with the third-generation mobile communication system and the second-generation mobile communication system, each standard is quite different in physical hardware and physical hardware control layer, but it has tried to be consistent in the wireless protocol stack standard, and it is also for the system However, the transition from the second-generation GSM/GPRS to the third-generation CDMA2000, WCDMA and TD-SCDMA has great differences in terms of service characteristics, network capacity and design ideas, so it is necessary to support multiple There is still great difficulty in the integration of all layers of the protocol stack for modular terminals.

Contents of the invention

The purpose of the present invention is to provide a multi-mode mobile terminal, which supports the integration of multiple modes of communication networks at different levels of the protocol stack, including protocol adaptation layer integration, non-access layer integration (NAS), and access layer integration ( AS), to flexibly realize terminal multi-mode.

Another object of the present invention is to provide a method for switching modes of a multimode mobile terminal, utilizing the identification-access technology (RAT) of the wireless access network stored in the memory of the multimode mobile terminal, the routing function module and the fusion The subsequent mobile communication protocol layer enables mobile terminals to communicate in multiple mobile networks.

In order to achieve the above object, the present invention proposes the following technical solutions:

A multi-mode mobile communication terminal includes physical hardware and software layers, the physical hardware includes a data processing system, a peripheral interface, a human-machine interface layer and a radio frequency transceiver module, and a memory for storing data in the software layer; the memory The storage includes a read interface for the software layer to obtain the access technology and a write interface for changing the current access technology.

The software layer includes an access technology identification table, a routing function module, a fusion layer and a non-fusion layer.

The routing function module is used to encapsulate similar functional layers of different access technologies, and route all communication messages between them between the fusion layer and the non-convergence layer.

The access technology identification table is set in the memory and identifies the access technology of the mobile communication network where the current mobile terminal resides. The access technology identifier uniquely identifies the access technology of the communication network where the current mobile terminal resides, and will receive The input technology is sent to the routing function module.

The fusion layer is the similar functional layer of different communication systems. It is realized by one functional module or several coupled functional modules, and obtains the current access technology through the read interface. Imported technical identification as a basis, while supporting the functions of each system. After integration, it is also ensured that each communication system can be switched to each other.

The non-converged layer, that is, the non-converged system protocol layer, in which the communication modes of the second-generation mobile communication system and the third-generation mobile communication system are isolated from each other and work independently.

Further, the fusion layer may include a protocol stack adaptation layer of the software layer, and the unfused layer includes a wireless protocol stack layer and a physical hardware control layer in the software layer, and the routing function module is located between the protocol stack adaptation layer and the physical hardware control layer. Between layers of the wireless protocol stack.

Alternatively, the fusion layer may include a protocol stack adaptation layer of the software layer and a non-access layer of the wireless protocol stack layer, and the non-fused layer includes an access layer of the wireless protocol stack layer and a physical hardware control layer, and the routing Functional modules are located between the non-access layer and the access layer.

Or, the fusion layer includes the protocol stack adaptation layer of the software layer, the non-access layer of the wireless protocol stack layer, and the wireless resource management layer of the access layer of the wireless protocol stack layer, and the unfused layer includes the wireless protocol stack layer The physical hardware control layer and the data link layer of the access layer, the routing function module is located between the radio resource management layer of the access layer and the physical hardware control layer.

A method for converting a multimode mobile terminal, comprising the steps of:

Step 1: the mobile terminal is turned on, after the drive module is initialized, the physical hardware of the terminal is started, and the mobile terminal writes the access technology identification selected by the user into the memory through the write interface, or sets a default access technology identification;

Step 2: the fusion layer obtains the access technology selected by the user through the read interface of the memory, and transmits the access technology to the routing function module;

Step 3: The mobile terminal selects a network according to the current access technology, searches for a cell and camps, returns a confirmation message, and the terminal camps normally;

Step 4: After the mobile terminal camps on normally, when the user manually selects another access technology network or the radio resource management layer of the wireless protocol stack layer selects another access technology network through cell reselection, access The technical identification is updated and written to the memory;

Step 5: The human-machine interface module or the wireless resource management layer notifies the routing function module that the access technology changes, notifies the mobility performance management layer of the wireless protocol stack layer, cancels the original network, and notifies the driver module to complete the physical hardware switchover. Finished, the software layer repeats steps one through three to restart residing on the new network.

The beneficial effects of the present invention are: the terminal provided by the present invention can select the resident network to obtain services centered on the user's manual selection in the network where the second-generation mobile communication system and the third-generation mobile communication system coexist, and can also use The terminal automatically selects as the center, and chooses to reside in the network to obtain services. This kind of terminal can adaptively perform mode switching cross-network operation according to user, network instructions or user interface requirements, and can also automatically perform mode recognition switching cross-network operation. Users can take into account different needs in different regions according to different situations. Use different communication modes.

Description of drawings

Figure 1 is a schematic diagram of network distribution;

Fig. 2 is a hardware structural diagram of the multimode mobile communication terminal of the present invention;

FIG. 3 is a schematic structural diagram of a multi-mode mobile terminal software in Embodiment 1;

Fig. 4 is embodiment one multi-mode mobile terminal routing function module workflow;

FIG. 5 is a schematic structural diagram of the multi-mode mobile terminal software in Embodiment 2;

Fig. 6 is the working flow diagram of the multi-mode mobile terminal routing function module of Embodiment 2;

FIG. 7 is a schematic structural diagram of the multi-mode mobile terminal software in Embodiment 3;

Fig. 8 is a working flow chart of the multi-mode mobile terminal routing function module in Embodiment 3.

Detailed ways

The following describes in detail the preferred embodiments of the present invention. In the following present embodiment, it is mainly aimed at the coexistence of GSM/GPRS, TD-SCDMA and WCDMA multiple mobile communication systems, but the present invention is equally applicable to the coexistence of any multiple mobile communication systems except the mobile communication network mentioned above Condition.

Embodiment one:

The terminal of the present invention is composed of physical hardware and software layers.

Physical hardware is a physical hardware structure that communicates with multiple mobile communication systems to achieve service in two or more mobile communication networks.

The physical hardware structure is shown in Figure 2, including a data processing system 200, a peripheral interface 210, a human-machine interface layer 220 that provides a window for users to choose access technologies, and a radio frequency transceiver module 230.

The data processing system may include a baseband processor 201, a MODEM-based chip 202 supporting GSM/TD-SCDMA/WCDMA, a data signal processor (DSP) 203 for completing baseband functions, and a memory for storing software layer data. Receptacle 204.

The peripheral interface 210 includes various standard peripheral interfaces, such as keyboard, speaker, earphone and other peripheral hardware standard interfaces (not shown).

The software layer structure of this implementation is shown in FIG. 3 , including: a man-machine interface module (not shown), an access technology identification table 340 , a driver module 330 , a routing function module 300 , a fusion layer 310 and an unfusion layer 320 .

The man-machine interface module is used to transmit the access technology information to the service processing system when the user selects the access technology;

The driver module 330, including driver sub-modules of known embedded operating systems and physical hardware, is an indispensable module in the mobile terminal;

Convergence layer 310. In this embodiment, the fusion layer includes a protocol stack adaptation layer 311, that is, a protocol stack adaptation layer is used to encapsulate protocol stacks of different communication systems;

Unconverged layer 320, in this embodiment, includes wireless protocol stack layer 321 and physical hardware control layer 322 of each communication system;

The wireless protocol stack layer 321 includes a non-access layer and an access layer. The non-access layer includes the connection management layer and the mobility performance management layer. The access layer includes the radio resource management layer and the data link layer. The data link layer includes wireless link management layer, media access layer and GSM/GPRS data layer.

The routing function module 300 is located between the protocol stack adaptation layer 311 and the wireless protocol stack layer 321, and routes all communication messages between them.

The routing function module 300 mainly completes the message forwarding function. The message sender of the routing function module 300 calls the macro MC_UPPER_TO_LOWER or MC_LOWER_TO_UPPER of the routing function module 300 to send the message. The sender does not need to fill in the specific destination address, that is, it is not necessary to fill in the specific GSM/GPRS, WCDMA/TD-SCDMA or For the destination address of other access technologies, it is only necessary to fill in the content of the defined message to be sent, and then the routing function module 300 forwards the message in a unified manner.

The access technology identifier (RAT) table 340 identifies the access technology of the mobile communication network where the current mobile terminal resides, and the access technology identifier uniquely identifies the access technology of the communication network where the current mobile terminal resides.

The definition of the access technology identifier in the memory 204 is shown in Table 1 and Table 2.

Table 1 Access technology identification variable table

Variable definitions describe v_Current_Rat Store the access technology of the wireless network where the current terminal resides

Table 2 Access technology identification macro definition table

macro definition value describe NO_SPECIFIC_RAT 0x00 Access network not specified RAT_GSM 0x01 GSM/GPRS access network RAT_TDSCDMA 0x02 TD-SCDMA access network RAT_WCDMA 0x03 WCDMA access network ... ... Other scalable access networks

In the present invention, the access technology identifiers of various mobile communications are stored in the access technology identifier table 340 of the memory 204, and external read-write interfaces MC_READ_RAT and MC_WRITE_RAT are provided, and the read-write interface is packaged through the drive module 330 The interface can be directly called by the routing function module 300.

Read interface MC_READ_RAT, through which the routing function module 300 can obtain the access technology identifier of the wireless network where the current terminal resides.

Write interface MC_WRITE_RAT, according to different switching modes, only one module can change the current access technology: for a mobile terminal manually switched, only the man-machine interface layer 220 can change the current access technology, when the mobile terminal user is on the man-machine interface Layer 220 has selected the mobile communication network that will reside, and man-machine interface layer 220 will call MC_WRITE_RAT, and the current access technology identification is written in memory 204; The wireless resource management layer can change the current access technology. When the wireless resource management layer changes the current mobile network type through cell reselection or the network commands the mobile terminal to switch to another wireless network, the wireless resource management layer will call MC_WRITE_RAT, write the current access technology identifier into the memory 204; for the mobile terminal combined with manual switching and automatic switching, both the man-machine interface layer 220 and the radio resource management layer can change the current access technology.

This embodiment provides a solution for integrating multi-mode terminals at the protocol stack adaptation layer:

The fusion layer 310 includes a protocol stack adaptation layer 311 for shielding the non-fusion layer 320 and providing a unified interface for the man-machine interface module.

The non-converged layer 320 includes a wireless protocol stack layer 321 including a non-access stratum (NAS) and an access stratum (AS).

As shown in FIG. 3 , the routing function module 300 in this embodiment is located between the fusion layer 310 and the non-fusion layer 320, that is, between the protocol stack adaptation layer 311 and the wireless protocol stack layer 321, and the terminal is between the protocol stack adaptation layer 321. The matching layer 311 is integrated with the human-machine interface module, which is the fastest and most convenient multi-mode terminal solution in the solution of the present invention. The wireless protocol stack layer 321 comprises the GSM/GPRS wireless protocol stack layer, the WCDMA wireless protocol stack layer and the TD-SCDMA wireless protocol stack layer which are separated separately respectively, and has the functions of the GSM/GPRS wireless protocol stack layer and the WCDMA wireless protocol stack layer respectively. The physical hardware control layer 322 and physical hardware corresponding to the TD-SCDMA wireless protocol stack layer. The protocol stack adaptation layer 311 is used as the encapsulating wireless protocol stack layer, an application-oriented layer, which itself has broken away from the differences described in the Third Generation Partnership Projects (Third Generation Partnership Projects, 3GPP) standard, so as long as the unified The protocol stack adaptation layer 311 and the man-machine interface module can provide services to users.

In this embodiment, the function of the routing function module 300 is as shown in Figure 4:

From the protocol stack adaptation layer 311 to the wireless protocol stack layer 321 direction: according to the current access technology, the routing function module 300 forwards the message of the access technology identification to the wireless protocol stack layer in the GSM/GPRS mode that is independently separated, or The wireless protocol stack layer of TD-SCDMA mode, or the wireless protocol stack layer of WCDMA.

From the wireless protocol stack layer 321 to the protocol stack adaptation layer 311 direction: directly and transparently forward messages.

Below in conjunction with accompanying drawing 1,3 and 4 further illustrate the course of work of the present embodiment:

1) When the user of the mobile terminal presses the power button to turn on the machine through the entry interface layer 220, the driver module 204 is initialized, and the physical hardware of the terminal is started. The network where the secondary resides is shown in Figure 1, and the mobile terminal user has selected the TD-SCDMA network.

When the mobile terminal user selects the mobile communication network to reside on the man-machine interface layer 220, the man-machine interface module will call MC_WRITE_RAT to write the current access technology identification into the access technology identification table 340 of the memory 204 middle.

2) The protocol stack adaptation layer 311 obtains the access technology selected by the user through the access technology identification table 340 through the read interface MC_READ_RAT of the memory 204;

3) The protocol stack adaptation layer 311 transmits the access technology to the routing function module 300;

31) The routing function module 300 judges that the direction of the message is from the protocol stack adaptation layer 311 direction to the wireless protocol stack layer 321 direction, and further judges the access technology;

32) If it is a GSM/GPRS access technology, it is routed to the GSM/GPRS wireless protocol stack layer; if it is a WCDMA/TD-SCDMA access technology, it is routed to the WCDMA/TD-SCDMA wireless protocol stack layer;

4) If the TD-SCDMA network is selected by the power-on user, the mobility management layer of the TD-SCDMA wireless protocol stack starts the network selection process, that is, selects the public land mobile network (PLMN process;

5) The TD-SCDMA radio resource management layer searches for cells according to the network provided by the mobility management layer, as shown in Figure 1 , at this moment, mobile cell 5, mobile cell 18, mobile cell 19 and mobile cell 20 can be found. The radio resource management layer tries to camp on the cell with the strongest signal, and interprets the system information of the cell. If the camping is successful, the radio resource management layer returns a confirmation message to the mobility performance management layer, and the terminal camps on normally.

Further, the user can also change the current access technology through the man-machine interface layer 220, for example, after the user selects the TD-SCDMA network, to change to the GSM/GPRS network, select the GSM/GPRS network on the man-machine interface layer 220 , the man-machine interface module will call MC_WRITE_RAT to write the current access technology identifier into the memory 204 . The wireless protocol stack layer 321 starts the logout process of the original TD-SCDMA network, and the terminal starts to close the TD-SCDMA hardware environment.

When the logout process is complete:

1) GSM/GPRS physical hardware starts.

2) The protocol stack adaptation layer 311 obtains the access technology of the current terminal according to the read interface MC_READ_RAT provided by the memory 204 .

3) The protocol stack adaptation layer 311 transmits the access technology message to the routing function module 300, and the routing function module 300 starts the GSM/GPRS wireless protocol stack layer according to the GSM/GPRS access technology selected by the user;

4) The mobility management layer of GSM/GPRS selects the GSM/GPRS network, that is, selects the PLMN process.

5) GSM/GPRS wireless resource management layer According to the network provided by the mobility performance management layer, the terminal starts a process of finding a cell in a new wireless access network, as shown in Figure 1, the cell found at this time is a mobile cell 11, and the mobile cell cell 12 and mobile cell 14 . After successfully camping in the cell with the strongest signal and registering in the GSM/GPRS network, the mobile terminal user will obtain the second-generation GSM/GPRS service in the selected network.

Embodiment two:

In this embodiment, the hardware of the terminal is the same as that in Embodiment 1. The software layer structure of this embodiment includes a man-machine interface module, an access technology identification table 340, a driver module 330, a routing function module 300, a fusion layer 310 and Unfused layer 320 .

The difference is that, as shown in FIG. 5 , the fusion layer 310 includes a non-access layer 412 of the wireless protocol stack layer and a protocol stack adaptation layer 411, that is, the terminal has only one shared non-access layer 412 and one shared protocol Stack adaptation layer 411 .

The wireless protocol stack layer also includes an access layer 421 . The non-access layer includes a connection management layer and a mobility management layer. The access layer includes the radio resource management layer and the data link layer. The data link layer includes wireless link management layer, media access layer and GSM/GPRS data layer.

The unconverged layer 320 includes an access layer 421 and a physical hardware control layer 422 .

The routing function module 300 is located between the non-access layer 412 of the converged layer 310 and the access layer 421 of the non-converged layer 320 .

The non-access layer 412 includes a connection management layer and a mobility management layer.

The access layer 421 includes an independent GSM/GPRS access layer, an independent WCDMA/TD-SCDMA access layer, and has physical hardware corresponding to the GSM/GPRS access layer and the WCDMA/TD-SCDMA access layer respectively Control layer 422 and physical hardware.

The GSM/GPRS access layer includes a GSM/GPRS radio resource management layer and a GSM/GPRS data link layer. The WCDMA/TD-SCDMA access layer includes the WCDMA/TD-SCDMA radio resource management layer and the WCDMA/TD-SCDMA data link layer.

When the multi-mode terminal achieves the integration of the non-access layer 412, that is, the multi-mode terminal uses a non-access layer to simultaneously support the terminal user to reside in different wireless access networks and obtain services, it can use the The routing function module 300 is used to encapsulate the unintegrated access layer 421, physical hardware control layer 422 and physical hardware. In this embodiment, the routing function module 300 is located between the non-access layer 412 and the access layer 421.

The non-access stratum 412 implements all standard requirements according to the 3GPP standard. When different standards have different requirements for implementation, the non-access stratum 412 can call the read interface MC_READ_RAT provided by the memory 204 to obtain the access status of the current terminal. access technology, and then perform different actions in different communication networks according to different access technologies.

The routing function module 300 mainly completes the message forwarding function between the non-access layer 412 and the access layer 421 . As the sender of the message, both the non-access layer 412 and the access layer 421 call the macro MC_MM_TO_AS or MC_AS_TO_MM of the routing function module 300 to send the message, and the sender does not need to fill in the specific destination address, that is, it does not need to fill in the specific GSM The access layer of WCDMA/TD-SCDMA or access layer of other access technologies only needs to fill in the content of the defined message to be sent, and then the routing function module forwards the message uniformly.

The working process of the routing function module 300 is shown in Figure 6:

The routing function module 300 judges the direction of the message, and when forwarding from the non-access layer 412 to the access layer 421 direction, the routing function module 300 forwards the message to the GSM/GPRS wireless resource management layer, WCDMA/TD according to the current access technology - SCDMA radio resource management;

When forwarding from the access layer 421 to the non-access layer 412 direction, the routing function module 300 forwards to the circuit domain or the packet domain of the non-access layer 412 after further judgment according to the current access technology and the network domain (CN Domain).

Below in conjunction with accompanying drawing 1,5 and 6 further illustrate the course of work of the present embodiment:

1) When the user of the mobile terminal presses the power-on button through the man-machine interface layer 220 to start the machine, the driver module 330 is initialized, and the physical hardware of the terminal is started. Secondary residency network, for example, the mobile terminal user has selected a WCDMA network. The man-machine interface module will call MC_WRITE_RAT to write the current access technology identifier into the memory 204 .

3) The protocol stack adaptation layer 411 obtains the access technology of the current terminal according to the read interface MC_READ_RAT provided by the memory 204, and transmits the access technology to the non-access layer 412;

4) After obtaining the access technology identifier, the non-access stratum 412 passes the access technology identifier to the routing function module (300);

41) The routing function module 300 judges that the direction of the message is from the non-access stratum 412 to the access stratum 421 direction, and further judges the access technology; if it is a GSM/GPRS access technology, it is routed to the GSM/GPRS wireless resource management layer; If it is WCDMA/TD-SCDMA access technology, route to WCDMA/TD-SCDMA radio resource management;

42) The routing function module 300 judges that the direction of the message is from the access layer 421 to the non-access layer 412 direction, and the routing function module 300 forwards it to the CS management of the non-access layer according to the current access technology and the network domain (CN Domain) domain or PS management domain.

5) WCDMA radio resource management layer According to the access technology and network provided by the mobility performance management layer, the terminal starts a process of searching for cells in the wireless access network, as shown in Figure 1, after finding cell 13, cell 16, and cell 17, select Residential cells normally receive services from the WCDMA network.

Embodiment three:

In this embodiment, the hardware of the terminal is the same as that in Embodiment 1. The software layer structure of this embodiment includes a man-machine interface module, an access technology identification table 340, a driver module 330, a routing function module 300, a fusion layer 310 and Unfused layer 320 .

The difference is that, as shown in FIG. 7 , the fusion layer includes the wireless resource management layer 713 of the access layer of the wireless protocol stack layer, the non-access layer 712, and the protocol stack adaptation layer 711, that is, the terminal is in the access layer The wireless resource management layer 713, the non-access layer 712, and the protocol stack adaptation layer 711 are integrated, that is to say, the system is between the wireless resource management layer 713, the non-access layer 712, and the protocol stack adaptation layer 711 of the access layer The functional modules can be switched to each other.

The wireless protocol stack layer includes a non-access layer 712 and an access layer. The non-access layer 712 includes a connection management layer and a mobility management layer. The access layer includes the radio resource management layer and the data link layer. The data link layer includes wireless link management layer, media access layer and GSM/GPRS data layer.

Unconverged layers 320 include the physical hardware control layer 722 and the data link layer of the access layer.

The routing function module 300 is located between the radio resource management layer 713 of the access layer of the fusion layer 310 and the physical hardware control layer 722 of the non-convergence layer 320 .

The working process of the routing function module 300 is as shown in Figure 8:

The routing function module 300 judges the direction of the message, if the message is from the physical hardware control layer 722 to the wireless resource management layer 713 direction of the access layer, then perform the following steps;

A) judging the message type, if it is the wireless resource management layer 713 message, it is routed to the wireless resource management layer 713;

B) judge the message type, if it is a data link layer message, then judge the message type, and carry out the following process:

If it is a data management layer message, it is routed to the data management layer of the GSM/GPRS functional layer; otherwise, the message type is judged; if it is a GSM/GPRS wireless link management layer message, it is routed to the wireless link management of the GSM/GPRS functional layer Otherwise, judge the message type, if it is the media access layer message of the WCDMA/TD-SCDMA functional layer, then route it to the media access layer of the WCDMA/TD-SCDMA functional layer; otherwise, perform error handling.

Otherwise, the routing function module judges the direction of the message, if the message is from the radio resource management layer 713 of the access layer to the physical hardware control layer 722 direction, then judges the access technology, and routes to the radio resource management layer 713 according to the access technology.

Described access layer comprises the wireless resource management layer 713 that multiple communication modes merge, and respectively independent GSM/GPRS data link layer, WCDMA/TD-SCDMA data link layer, and have and GSM/GPRS data link layer respectively Layer, WCDMA data link layer and TD-SCDMA data link layer corresponding GSM/GPRS physical hardware control layer and WCDMA/TD-SCDMA physical hardware control layer, and corresponding physical hardware.

The GSM/GPRS data link layer includes the GSM/GPRS radio link control layer, the GSM/GPRS media access layer and the GSM/GPRS data layer.

The WCDMA/TD-SCDMA data link layer includes the WCDMA/TD-SCDMA radio link control layer and the WCDMA/TD-SCDMA media access layer.

When the multi-mode terminal achieves the integration of the access layer and above, that is, the multi-mode terminal uses the same non-access layer and 712 access layer to support terminal users to reside in different wireless access networks and obtain services, they can The routing function module 300 is used to encapsulate the unfused physical hardware control layer 722 and physical hardware.

In this implementation, if the user does not specify a wireless network to camp on, the wireless resource management layer 713 will use the default network and order the physical hardware control layer 722 to start searching for cells. When the physical hardware and the physical hardware control layer 722 work in one mode, they must have the function of monitoring different wireless communication networks at the same time.

As part of the access layer, the data link layer is mainly located on the user plane, below the radio resource management layer 713 and above the physical layer control layer 722, providing data transmission management for mobile terminals.

In the second generation of GSM/GPRS, the radio link control layer (RLC), media access layer (MAC) and data layer (DL) of the data link layer are respectively responsible for the data transmission management of the packet domain and the circuit domain. Domain management is for Temporary Block Flow (TBF); circuit domain management is for Link Access Protocol on the Dm channel (LAPDm). In the third-generation TD-SCDMA and WCDMA, the Radio Link Control layer (RLC) and the Media Access layer (MAC) manage the packet domain and the circuit domain in a unified manner for the Radio Bearer (RB) and transmission channel.

In the present invention, in the implementation scheme based on the integration of the access layer, the integration of the data link layer is not required, and only the integration of the wireless resource management layer in the access layer is required. According to the standard of 3GPP, the integration of the wireless resource management layer is achieved. Convergence, first of all, the GSM standard should be upgraded to support GSM system to WCDMA system or TD-SCDMA system. In the 3GPP standard, all versions after REL99 support switching from WCDMA or TD-SCDMA to GSM. The radio resource management layer after fusion supports the measurement of TD-SCDMA and WCDMA adjacent cells in GSM/GPRS mode, and can reside in TD-SCDMA or WCDMA network through cell reselection, and vice versa.

Below in conjunction with accompanying drawing 1,7 and 8, further illustrate the working process of the present embodiment with automatic switching network access technology mode:

This embodiment is a communication mode of automatically switching network access technologies. When the user turns on the terminal, the terminal resides on the network according to the default access technology identifier, and the terminal switches networks according to the measurement results when moving in the network.

1) The mobile terminal is turned on, after the driver module 330 is initialized, the physical hardware of the terminal is started, and the mobile terminal writes the access technology identification selected by the user into the memory through the write interface, or sets a default access technology identification;

2) The protocol stack adaptation layer 711 obtains the access technology selected by the user through the read interface of the memory 204, and transmits the access technology to the non-access layer 712, and the non-access layer 712 transmits it to The wireless resource management layer 713 of the access layer, and the wireless resource management layer 713 transmits it to the routing function module 300;

3) The mobile terminal at the software layer selects the network according to the current access technology, searches for a cell and resides there, returns a confirmation message, and the terminal normally resides;

4) After the mobile terminal resides, such as in cell 11, the terminal will regularly measure the information of neighboring cells, and sort the cells that can be found currently according to the signal strength. The current cells are sorted according to the signal strength, as shown in Table 3 Show.

Table 3 cell signal strength sorting table

community signal strength 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 radio resource management layer 713 of the access layer, according to the cell list provided by the physical hardware control layer 722, as shown in Table 3, the radio resource management layer 713 will try to camp on a mobile cell 15 with a stronger signal.

5) After the terminal normally resides on the sub-district 15, the radio resource management layer 713 will invoke MC WRITE RAT to write the TD-SCDMA access technology identification of the sub-district 15 into the memory.

6) The radio resource management layer 713 will notify the routing function module 300 of information on access technology changes.

7) The wireless resource management layer 713 will notify the mobility management layer of the wireless protocol stack layer that the original network is deregistered, and notify the driver module (330) to complete the physical hardware switching. After the physical hardware switching is completed, the software layer repeats steps 1) to 3) Start residency on the new network.

Since mobile communication still needs to go through a long process from 2G to 3G, in order to enable users to achieve seamless access and enjoy the latest communication services during the transition period, the integration of dual-mode and even multi-mode has become a major development of communication terminals. Trend, the multimode communication terminal provided by the present invention has low cost; Solved, users can use different communication modes according to different situations and taking into account the different needs of different regions. At the same time, the same terminal can be sold to users of multiple operators. Equipment manufacturers who choose to manufacture the multi-mode terminal of the present invention and make it a "universal product" will undoubtedly achieve commercial success.

The embodiments of the present invention are only detailed descriptions for the examiner to better understand the present invention, and are not intended to limit the protection scope of the present invention. Changes made to the present invention are within the protection scope of the present invention.

Claims (10)

1. a 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), in fused layer (310), the shared identical functions module of plurality of communication schemes, fused layer (310) obtains current access technology by the described interface of reading, and, different communication systems is done different processing according to the difference that access technology identifies;

Fused layer (320) not, in fused layer (320) not, plurality of communication schemes is 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) is arranged in the memory (204), is used to identify the access technology of the resident mobile communications network of current mobile terminal.

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.

5. according to each described multimode mobile communication terminal in the claim 2 to 4, it is characterized in that the access technology that changes the resident mobile communications network of described current mobile terminal 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; It perhaps is the combination of described manual change and described automatic switchover.

6. a 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 of 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. multi-module mobile 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 conversion methods, 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 (500) 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.

10. according to claim 6 or 7 described multi-module mobile terminal conversion methods, it is characterized in that 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 (500) 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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