CN1304262A - Mobile phone with multiple network access card sockets applied to wireless communication system - Google Patents

Abstract

A mobile phone used in a wireless communication system comprises at least two network card sockets for inserting two or more network cards and a network card selection switch for a user to select one of the network cards to use for network communication. Because the difference between the local telephone and the roaming telephone is large and the difference between communication network suppliers is large, the mobile phone with a plurality of network access cards can lead a user to conveniently select the most suitable network access card to carry out network communication at any time, thereby bringing convenience and cost saving for the user.

Description

Mobile phone with multiple network access card sockets applied to wireless communication system

The present invention relates to the telephone handset in the wireless communication system, comprises GSM (Group Special Mobile (mobile communication special research group), or Global system for Mobile communications (global system for mobile communication)) system and application SIM (subscriber identification module) card (network access card) ) technology of other wireless communication systems, especially mobile phones with multiple network access card sockets.

In the wireless communication system, the cellular wireless system is one of them. In a cellular radio system, the area covered by the system is divided into many small areas (cells), and each cell has at least one base station transmitter and receiver. Neighboring base stations and subscriber units are assigned different frequencies to avoid causing interference, but cells that are too far apart to cause interference can also use the same frequency. Therefore, in such a system, such as the GSM standard system, which can cover more than one city or one area, it includes many base stations, and the base stations are connected to the mobile switching center (MSC). The mobile switching center includes a home location registration unit (HLR), Access location register (VLR), etc. Subscriber units communicate with base stations via wireless signals. Since the GSM system is widely known, it will not be described in detail here.

SIM (Subscribe Identity Module) can be packaged in a card, called SIM card or network card. The SIM card can be placed in the SIM card slot of the mobile phone. A SIM card is a signal processing device that can register call services on the GSM network and compatible wireless communication networks. It can store the user's personal password (PIN), protection code and relevant network data. Users can use a mobile phone with a SIM card inserted. The PIN code and related data can be obtained from the SIM card, and the International Management Identity Number (IMSI) can be obtained from the mobile phone provider, which and other data can help the wireless network to identify the user. The SIM card can be inserted into any corresponding mobile phone, and the user calls through the corresponding communication network registered with the SIM card.

A user who has a network access card, that is, a SIM card and registers on the Internet, can talk on the corresponding wireless network, and his relevant information is stored on the home location register (HLR) of this wireless network. When connecting to this wireless network, such a user can view As a local network user. When this network cannot cover the area where the mobile phone is located, the mobile phone can be connected to other corresponding wireless networks as a roaming user, and its relevant data can be temporarily stored on the VLR of the roaming network.

Since there are many network providers that provide mobile phone network access, and the advantages and disadvantages of the networks used by each network provider are different, in order to increase the user's choice, the user may need two or more network access cards to facilitate access to different networks. . For the convenience of users using the network access card, it is necessary to improve the mobile phone that can only use one network access card at present.

The purpose of the present invention is to provide a mobile phone, which can accommodate and switch between two or more network access cards for users to choose and use. Therefore, mobile phone users can easily choose any one of the network access cards, and choose other cards when necessary. network card.

The present invention provides a mobile phone used in a wireless communication system, wherein the mobile phone includes: at least two network access card sockets for insertion of two or more network access cards; and a network access card selection switch for the user to select Use one of the network access cards to communicate online.

The solution of the present invention is to set two or several multiple network access card (SIM card) sockets on the user's mobile phone, which can be inserted by multiple network access cards, and a mechanical or electronic selection switch is set on the mobile phone for the user to choose. which card to use.

These network access cards can be registered on different wireless networks to access the network respectively. The user can choose a corresponding network access card to connect to the corresponding wireless network as a roaming user or as a local user to talk. When the mobile phone is used as a visiting user, that is, a roaming user, the corresponding wireless network is usually in a different place.

When roaming on the aforementioned wireless network, the wireless network where the roaming is located obtains information about the wireless network registered with the network access card from the network access card so as to get in touch with the registered network. The registration network of the network access card will authorize the roaming network to roam about the network access card, and transmit the information about the user of the network access card to the roaming network, and record the current location of the roaming user at the same time. The user's call can then be carried out on the roaming network.

The mobile phone of the present invention can give the mobile phone user a very convenient choice, that is, talk as a roaming user or as a local user. Mobile phone is owing to be provided with several network access cards namely SIM card socket, so that the user has a plurality of SIM cards to choose to use.

In the present invention, a mobile phone has a plurality of SIM card sockets, and when each SIM card socket inserts a SIM card and opens the mobile phone, at least one SIM card can be selected by the user to surf the Internet, and transmit relevant data to the corresponding wireless network, while the relevant The wireless network also usually transmits the name of the network and related information to the mobile phone. Therefore, the mobile phone user can judge to surf the Internet as a roaming user or as a local user according to these data, and the user can use a switch to switch simultaneously so as to select a local user or a roaming user to surf the Internet.

In addition, in the present invention, the switching mode of the network access card, that is, the SIM card, can be divided into two types, one is mechanical, which includes a mechanical switch, and the other is electronic, which can be selected and switched according to the keys and displays of the mobile phone. Whether it is mechanical or electronic, the SIM card is connected to the mobile phone through the SIM card socket. When the user activates the mobile phone, there are usually a variety of corresponding wireless network provider names displayed according to the inserted SIM card. The electronic switching method is to use the guide on the mobile phone. key (NAVIGATIONKEY) to select the menu, thereby selecting the corresponding SIM card to access the Internet, and the mechanical switch is to select a mechanical switch position on the mobile phone to connect the corresponding SIM card to access the Internet. After selecting the SIM card to go online, the mobile phone user's call can be registered to the corresponding wireless network through the selected SIM card.

The present invention is illustrated by the following drawings.

FIG. 1 is an explanatory diagram illustrating the structure of a wireless communication cellular network in the prior art.

FIG. 2 is an explanatory diagram illustrating the structure of a prior art wireless communication GSM wireless network.

FIG. 3 is an explanatory diagram of the appearance and structure of a user mobile phone in the prior art.

Fig. 4 is an explanatory diagram of a SIM card and a SIM card socket on a user's mobile phone in the prior art.

Fig. 5 is an explanatory diagram of the structure and principle of the SIM card of the network access card in the prior art.

Fig. 6 is an explanatory diagram of the present invention having two network access cards, that is, a SIM card socket mobile phone.

Fig. 7 is an explanatory diagram for mechanically switching multiple SIM card sockets when there are two network access cards of the present invention.

Fig. 8 is an explanatory diagram of the multi-SIM card socket in the electronic switching when there are two network access cards of the present invention.

The present invention will be described in further detail below in conjunction with the accompanying drawings.

Referring to Fig. 1, Fig. 1 is a structure of a cellular wireless network. In the cellular network, the geographical area covered is divided into many small areas (cells) 49, and each cell has at least a set of base station (BS) 40 composed of transceiver equipment, and is assigned to multiple frequency channels, and the area covered by the cells is composed of Transmitter power and propagation routing decisions. The frequency channels of adjacent base stations and subscriber units (handsets) 48 are different to avoid co-channel radio wave interference, but cells that are far away from each other and do not interfere with each other can also use the same channel. The base station is connected to a Mobile Switching Center (MSC) 41, which is usually connected to the Public Switched Telephone Network (PSTN) or other Mobile Switching Centers (MSCs). The call of the mobile phone is through the cell where it is located. In order to maintain the continuity of the call when the mobile phone moves from the cell to the adjacent cell, the channel of the mobile phone will be switched to the available frequency channel in the adjacent cell to keep the call. This is usually Called channel switching, it is mainly performed by the handset, the base station (BS) 40 and the mobile switching center (MSC).

The number of cells in the same wireless network can be greatly increased because the same channel can be used in cells that are far enough apart not to cause interference. Given a certain number of channels, many cells can be reused, so that the area covered by the wireless network is greatly increased, and the number of user capacity is also greatly increased.

The following uses the GSM standard system to illustrate the application of the present invention, but the present invention is not limited to be used on the GSM system. Equally, what set forth here is the using method of the mobile phone with the network access card socket of two SIM cards, but it can be extended to more than two to several to a plurality of SIM card socket mobile phones, and the number here usually refers to within ten.

Referring to Fig. 2, Fig. 2 is an explanatory diagram of an example of a network structure of a GSM system, which includes three subsystems: a network subsystem, a wireless subsystem and an operation control subsystem.

The network subsystem includes the management of mobile subscribers, the interface with the public switched telephone network (PSTN), user call connection, etc., and it includes a mobile switching center (MSC) 41, a visiting location registration unit (VLR) 42, a home location registration unit ( HLR) 45, Authorization Center (AuC) 44 and Equipment Identity Recognition Unit EIR46. The functions of the mobile switching center MSC include the establishment of user calls, call routing, channel switching between base stations and call connections of other MSCs, interface with the public switched telephone network PSTN, charging and so on. HLR45 is composed of a database center, which stores all the information of local users and distributes a wireless telephone number to local users. VLR42 is composed of a database of all current visiting users, and is used to provide roaming services to visiting users. For example, when a mobile phone user roams in a wireless network, the VLR of the wireless network that provides the service will transmit the data registered by the mobile phone to the HLR of the local network registered in the SIM card of the mobile phone, and at the same time, the HLR of the local network will register the current location of the mobile phone material. When the user talks, the VLR in the roaming network has the data needed for mobile phone calls, so the VLR can actually be considered as a sub-unit of the local network HLR. HLR linked to AuC44. The role of AuC is to provide HLR with authorization and encrypted passwords for protection. EIR46 is a registration database of the International Mobile Equipment Identity (IMEI) of all registered users.

The wireless subsystem includes the management of wireless connection and wireless transmission. It is also called the base station subsystem, and is mainly composed of the base station controller BSC50, the wireless transceiver system unit BTS and the subscriber unit (mobile phone, etc.) 48. Usually, the base station BS40 is composed of a base station controller and a plurality of BTSs. The mobile unit (handset) is considered part of the wireless system, the connection terminal for calls, and communicates with the network subsystem to manage the mobility of the handset itself. The GSM system is a wireless cellular network covering the service area, each cell has at least one BTS, and multiple BTSs are controlled by one BSC. There are many forms of connection between BSC and BTS, some are designed for areas with high traffic volume, and some are designed for areas with low traffic volume. The functions of the BSC include switching and power control. One or more BSCs are connected to the MSC41, and the BSC also manages channels, wireless transmission, and so on.

The operation control subsystem supports the network operation and maintenance of the GSM system, and is used by relevant engineers to monitor, diagnose, maintain and manage billing.

Referring to Fig. 3 and Fig. 4, Fig. 3 and Fig. 4 are explanatory diagrams of a currently used wireless network mobile phone. The mobile phone among the figure has a SIM card socket and inserts a SIM card 33. It can transmit data, voice, fax, short message service, encryption and decryption of information and data, etc. The main structure and function of Fig. 3 mobile phone are, antenna 20 is used for transmitting and receiving wireless signal, and indicator lamp 21 can represent the power-on and power-off state of mobile phone, and volume key 23 is used for adjusting call volume, and navigation key 30 is used for selecting menu so that can Incoming and outgoing calls are prohibited, the speaker 22 is used for answering calls, and the number keys 29 are used for dialing and information input, etc. On the display screen of the mobile phone, there are indications of received signal strength, battery energy indication and the name of the service wireless network, etc. . Microphone 31 is a voice receiver, and socket 32 is a battery charging and other related function access socket. Fig. 4 is the back side of general mobile phone, only has a SIM card and SIM card socket.

Referring to Fig. 5, Fig. 5 is the structure of the SIM card of the network access card. SIM card center is made by a silicon chip, contains a microprocessor CPU52 and memory 51, and it is a smart card actually, can have two kinds of sizes, and a kind of is as international standard credit card size (ISO), and another kind is As small as a fingernail, the performance and interface of the two cards are exactly the same. The ISO standard card can usually be inserted into the SIM card slot at the bottom of the mobile phone, while another small card the size of a fingernail can usually be installed in the SIM card slot on the back of the mobile phone, as shown in Figure 4. The SIM card stores a lot of user information, and is protected by a personal identification number (PIN). Only users who know the PIN can get the SIM card and use it.

Two other numbers can also be stored in the SIM card, one is the International Mobile Subscriber Identity (MSI), and the other is a pseudo-random code generated by the parameter ki. The IMSI can be stored on the SIM card or on the HLR of the registered network, but it is not transmitted over the air. When the wireless network needs user identification, the SIM card transmits a pseudo-random code. For example, when the mobile phone user turns on the mobile phone on a roaming network, the VLR of the wireless network will determine the identity of the mobile phone according to the pseudo-random code in the SIM card. The HLR of the registered wireless network will authorize whether roaming is allowed, transmit relevant user information to the roaming network VLR and register the user's current location, so that the user can roam and talk. The pseudo-random code is automatically generated every time the mobile phone is turned on to access the Internet, and it is different every time to prevent theft.

Next is Fig. 6 below, is an embodiment of the mobile phone of the present invention, and in this example, it has two SIM card sockets 34a, 34b, usually in the back of the mobile phone. The mechanical switch is at the bottom of the mobile phone, which is used to select the corresponding SIM card for online calls.

The improved mobile phone of the present invention can be applied on the wireless communication network shown in FIG. 1 . The HLR of the network stores the wireless telephone number (MISDN) and subscriber identity (IMSI) of the SIM card. MISDN matches the fixed telephone number of the public network. MISDN and user features such as long-distance calls, network feature selection, etc. are stored on the corresponding network. Imagine that if the user selects multiple SIM cards to insert into multiple SIM card sockets of the mobile phone, there are two situations, one is to register to surf the Internet as a local user, and the other is to register to surf the Internet as a roaming user.

A SIM card can register at least one wireless network as a local network. With respect to the current wireless network, if the first SIM card 33a is registered as a local network and the second SIM card 33b is registered as a roaming network. Two SIM cards are inserted in the SIM card socket of mobile phone simultaneously, when the user selects SIM card 33b to surf the Internet, the VLR of wireless network requires the HLR of the local network that SIM card 33b is registered to transmit relevant user information and store relevant data temporarily, simultaneously the local network The HLR will also register the location of the SIM card 33b. Here, the positions of the two SIM cards in the SIM card socket can be exchanged without changing the nature of the call.

Provided in this embodiment is the mobile phone example that two network access sockets are set, similarly, can be provided with 3, or 4, or 5, or 6 etc. the socket of several or more network access cards, for The user chooses to use, and generally speaking, no more than ten sockets are sufficient.

When using the network, only one network access card is used at the same time, and in the structure of the mobile phone, only one network access card is connected at a time, so the rest of the structure of the mobile phone remains unchanged, and only a similar selective switch facility is added. The example of Fig. 6 and Fig. 7 is the mobile phone that has two network card sockets, adopts mechanical selector switch, also can adopt electronic type switch, like this, the basic structure of mobile phone does not change, like this, the present invention can be applicable to various structures and performance phone.

The user can have two methods to select the corresponding SIM card to access the Internet, mechanical and electronic, as shown in Figure 6, Figure 7 and Figure 8, two SIM cards 33a, 33b, two SIM card sockets 34a, 34b and mechanical switches 36. There are two bundles of wires connecting the SIM card socket and the mechanical switch respectively. Figure 5 shows the function of these connections, mainly power supply, data transfer, clock signal and ground. These connections are usually made on the printed circuit board 37 of the mobile phone. Fig. 7 shows that the mechanical switch 36 is provided with a selection button 36a at the bottom of the mobile phone, which is used to select the corresponding SIM card to access the Internet. The bottom of the mobile phone is provided with an installation slot 36b for a selection button, and has two positions S1 and S2. S1, S2 are respectively connected with corresponding SIM cards 33a, 33b, as shown in the selection button position in the figure, when the mobile phone is opened, the SIM card 33b will be selected to surf the Internet. The use of selection button 36a is very convenient, and it is at the bottom of the mobile phone shown in the A direction view among Fig. 7, and its size and volume control key 23 are similar. The SIM card selected to access the Internet can usually display the name of the corresponding wireless network or network provider on the mobile phone, and the user can thus change the SIM card to access the Internet.

The network access card selection switch includes two types of switches, one is mechanical and the other is electronic. The mechanical switch has multiple positions to select the corresponding SIM card to access the Internet, and the electronic switch uses information such as the keyboard of the mobile phone and the displayed network provider's menu to select the corresponding SIM card to access the Internet.

There are two ways to connect the SIM card socket switch, the other is the connection of the mechanical switch, the multi-bundle wires are respectively connected to the SIM card socket and the mechanical switch, and the other bundle is connected to the switch and the SIM card socket on the motherboard of the mobile phone interface. The other is an electronic switch connection line, that is, multiple SIM card ports and SIM cards are completely connected to the interface on the main board of the mobile phone.

The SIM card socket mentioned in the present invention includes two kinds of SIM card standard sockets, big and small.

The various SIM card sockets mentioned in the present invention can be easily installed on relevant corresponding mobile phones without affecting other devices on the printed circuit board of the mobile phone.

The multiple positions of the mechanical switch mentioned in the embodiment of the present invention means that there are more than two positions for the selection button to toggle, and the positions 1, 2, etc. correspond to the connections of the SIM cards 1, 2, etc.

The mechanical switch selection button mentioned in the embodiment can be installed on the convenient use place of the mobile phone, such as the bottom of the mobile phone, etc., and can have the same color as the mobile phone.

The connection line of the SIM card socket mentioned in the embodiment and the selector switch can be designed on the printed circuit board of the main board of the mobile phone, and also can be the connection line of the socket.

In the embodiment, the installation of the selection button mentioned is to open an installation slot on the mobile phone for the user to toggle the selection button to the corresponding position of the corresponding selected SIM card.

The position of the selection button mentioned above can be charged with the mobile phone, and the logo of the earphone jack is similar, such as S1, S2, etc., corresponding to the corresponding SIM card to connect to the Internet.

Referring to Fig. 8, Fig. 8 is the explanatory diagram of the situation when the network card selection switch of the mobile phone with many network card sockets of the present invention is an electronic switch, shows in the figure, there are at least two network card sockets on the back of the mobile phone, and there are two network card sockets inside. Network cards 34a and 34b, etc., can be selected under the item of network card selection in the main menu in the display screen through the keyboard operation in front of the mobile phone, and one of network card SIMS1 or SIMS2 or the like can be selected for network access.

In the connection of the electronic switch, multiple SIM card sockets are completely connected with the interface of the SIM card on the main board of the mobile phone. Above-mentioned connecting line can be designed on the main board of mobile phone, also can connect socket with connecting line.

Through the above detailed description of the present invention in conjunction with the accompanying drawings, any relevant modifications and changes that do not deviate from the essence and scope of the present invention shall belong to the protection scope of the present invention.

The implementation of the present invention can bring great convenience to mobile phone users, so that users can easily select network providers, Internet providers, long-distance telephone providers, etc., insert the network access card of the selected telecommunication network provider and press Selecting the switch and choosing the most suitable network access card to connect to the network at that time will not only bring convenience to the user, but may also bring economic savings.

The present invention contains a new conception, that is, multiple SIM cards select to access the Internet in the wireless communication network.

The present invention is applicable to the communication system of GSM standard, or any other wireless communication system using SIM card technology. It should be pointed out that although the narration of the present invention adopts the GSM system, its application is not limited to the GSM system, and it can also be applied to other mobile communication systems such as CDMA (Code Division Multiple Access) systems.

Claims (9)

1. the mobile phone that uses in the wireless communication system is characterized in that described mobile phone comprises:

At least two networking card plugs insert so that go into network interface card for two or more; And

One goes into the network interface card selector switch, is used for selecting to use one of them to go into network interface card online communication for the user.

2. mobile phone as claimed in claim 1 is characterized in that, described to go into the network interface card selector switch be the mechanical type selector switch, is provided with one and selects button.

3. mobile phone as claimed in claim 1 is characterized in that, described to go into the network interface card selector switch be the electronic type selector switch, and this electronic type selector switch utilizes Information Selection such as the menu online of cell phone keyboard and demonstration.

4. mobile phone as claimed in claim 2 is characterized in that, the line between described networking card plug and the switch adopts multiwire line to connect into network interface card socket and mechanical switch respectively, and another bunch connection switch and networking card plug are at the interface of cell phone mainboard.

5. mobile phone as claimed in claim 3 is characterized in that, the line between described networking card plug and the switch is manufactured on the printed circuit board (PCB).

6. mobile phone as claimed in claim 1 is characterized in that, described networking card plug comprises: the big card plug that is applicable to iso standard; With the little card plug of the standard that is applicable to the finger nail size.

7. as claim 2 or 4 described mobile phones, it is characterized in that the selection button that described mechanical type is gone into the network interface card selector switch is installed in the mobile phone bottom.

8. as claim 2 or 4 described mobile phones, it is characterized in that the selection button that described mechanical type is gone into the network interface card selector switch has identical color with mobile phone.

9. as claim 2 or 4 described mobile phones, it is characterized in that, offer mounting groove, be used to install the selection button of selector switch, stir for the user and select button to the corresponding selected network interface card correspondence position of going in the bottom of mobile phone.

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