CN100531471C - Device and method for automatically selecting communication frequency band and mode - Google Patents

Abstract

The present invention provides a wireless communication device that automatically selects a communication frequency band and mode. The location of the wireless communication device is obtained by using a global positioning system to save the process of searching for a service network and reduce power consumption. In addition, a method for a wireless communication device to automatically select a communication frequency band and mode is also provided.

Description

Device and method for automatically selecting communication frequency band and mode

technical field

The present invention relates to the field of wireless communication, in particular, to the technology of automatic selection of communication frequency band and mode in the field of mobile communication.

Background technique

For a wireless communication device, such as a mobile communication device such as a mobile phone, a personal digital assistant (PDA), a smart phone (smart phone), it is often necessary to emphasize the standby time and talk time of the product. This is because the size of the mobile communication device is reduced as much as possible for the convenience of portability, and at the same time, the space that the battery can occupy is indirectly affected. Therefore, when the battery is limited in space, in addition to developing new batteries, how to reduce power consumption is also very important.

Reference is made to Figure 1 to illustrate the known technique. 1 is a block diagram design of a known communication device 100, including an antenna 102, a radio frequency (Radio Frequency, RF) transceiver (transceiver) 104, an analog baseband processor 106, an application processor 108, a memory 110 and an input/output interface 112 . Take a Global System for Mobile Communications (GSM) mobile phone 100 as an example, when the user presses the power switch on the input/output interface 112 to turn on the mobile phone 100, the application processor 108 will generate a The registration information is sent to the adjacent base station (Base Station) through the analog baseband modulator 106, the transceiver 104, and the antenna 102 successively, so as to request the system to perform a location registration operation. The registration information is then transferred to the visitor location recorder (Visitor Location Register, VLR) via the base station controller (BaseStation Controller, BSC), and then the information of the current location of the mobile phone 100 will be available in the communication network system, and the mobile phone 100 will also only have call function.

For multi-band multi-mode (multi-band, multi-mode) wireless communication devices, such as dual-band, tri-band, and quad-band mobile phones that advertise the convenience of international roaming (roaming) on the market, they will first scan The operating frequency band and mode of the communication device to find an available service network and register with the service network. Referring to the illustration example of Fig. 2, Fig. 2 shows the working process of a tri-band mobile phone when it is turned on. After the mobile phone is turned on (202), first search the first frequency band (204), if the search is successful (206), then use the first frequency band to send the registration information (208), if the registration is successful (210), then start the mobile phone function (212) and to end(232). Go back to box (206) and (210), if not, then search the second frequency band (214), if the search is successful (216), then use the second frequency band to send the registration information (218), if the registration is successful (220), then The handset function is started (212) and ended (232). Go back to squares (216) and (220), if not, then search the third frequency band (224), if the search is successful (226), then use the second frequency band to send registration information (228), if the registration is successful (230), then The handset function is started (212) and ended (232). Get back to squares (206) and (210), if not, then determine that there is no usable service network (222) and go to the end (232). From the above process, it can be seen that when the communication device scans for available service networks, it will consume more power than normal operations, that is, the search process may consume more power than making a call while connected to the service network.

In addition, although the user can set the frequency band and mode used in the communication area by himself, which can avoid the scanning process, the disadvantage is that the user must know the frequency band and mode available in the communication area in advance. For example, the GSM system mostly uses 900MHz and 1800MHz in Europe, while 850MHz and 1900MHz are used in North America. Another example is the WCDMA system, which uses 2100MHz in Europe and Pan-Asia, 850MHz and 1900MHz in North America, and will use 1700MHz in Japan in the future. It will become unfriendly for users to be familiar with these complicated system specifications.

Therefore, it is necessary to provide a device and method that automatically helps the user to select the frequency band and mode without scanning the frequency band and mode.

Contents of the invention

One aspect of the present invention is to provide a wireless communication device, including: a Global Positioning System (Global Positioning System, GPS) module, used to obtain the location of the wireless communication device; a storage module, including storing a plurality of communication areas , each region is a database corresponding to a frequency band and a mode; a processing module is connected with the global positioning system module and the storage module; and a mobile communication module is connected with the processing module; wherein, the processing module uses the location and the database to select the frequency band and the mode, and the mobile communication module uses the frequency band and the mode to send a registration message.

Another aspect of the present invention is to provide a control method for a wireless communication device, wherein the wireless communication device supports a global positioning system and has a built-in database, and the method includes the following steps: (a) obtaining the information of the wireless communication device through the global positioning system location; (b) using the obtained location to query the database to select a frequency band and a mode used by the location; and (c) sending a registration information of the wireless communication device using the selected frequency band and mode.

Description of drawings

Fig. 1 is the block diagram design of a known communication device;

Fig. 2 is the working process when the tri-band mobile phone is turned on;

FIG. 3 illustrates a specific embodiment of a wireless communication device that automatically selects a communication frequency band and a mode;

FIG. 4 illustrates an embodiment of a method for a wireless communication device to automatically select a communication frequency band and mode.

Description of component symbols

102 antenna

104 RF transceivers

106 analog baseband processors

108 application processors

110 memory

112 input/output interface

302 GPS module

304 mobile communication module

306 processing module

308 storage module

310 database

Detailed ways

The invention discloses a device and method for automatically selecting communication frequency band and mode. In order to make the description of the present invention more detailed and complete, reference may be made to the following description for purposes of illustration but not limitation, together with the accompanying drawings of FIG. 3 to FIG. 4 to obtain a clearer understanding.

Referring to FIG. 3 , in one embodiment, the present invention provides a wireless communication device 300 for automatically selecting a communication frequency band and mode, comprising: a global positioning system module 302, a storage module 308, the storage module 308 includes a database 310, a A processing module 306, and a mobile communication module 304. The global positioning system module 302 can receive signals from the artificial satellite group in space. When receiving the signals of three satellites, the longitude and latitude (2D) can be calculated, and the height (3D) can be added when the fourth satellite is received. More than five will increase the accuracy. Generally speaking, regardless of any time and any place on the earth, there will be at least four satellites providing positioning signals in the sky at the same time. Therefore, when the wireless communication device 300 is turned on, the GPS module 302 can be used to provide the wireless communication device 300 with current positioning signals. location of . In addition to knowing the location of the wireless communication device 300, it is also necessary to know which frequency band and which mode should be used at this location. Therefore, the present invention provides a storage module 308, which contains a database 310, and the database 310 stores a plurality of communication regions and the frequency band and mode corresponding to each region. That is, when the GPS module 302 obtains the location of the wireless communication device 300 and informs the processing module 306 of the location, the processing module 306 queries the database 310 to select the frequency band and mode used at this location. Therefore, the mobile communication module 304, such as the structure described in FIG. 1, can use the selected frequency band and mode to send registration information. However, it should be noted that the processing module 306 is regarded as one module for illustrative purposes only, and in other specific embodiments, the processing module 306 can also be integrated into the mobile communication module 304 or the GPS module 302 .

In some specific embodiments, the storage module 308 also includes the function of recording the previous location of the wireless communication device 300, for example, using the data of the location where the wireless communication device 300 was powered on last time or several times before, as a further reference for querying the database , to facilitate the application of various database algorithms. Moreover, in some embodiments, in addition to storing frequency bands and modes used in different communication areas, the database 310 can also store frequency bands and modes used by different telecom operators in a communication area. In addition, in some embodiments, the wireless communication device 300 further includes a function of updating the database 310 .

Referring to FIG. 4 , FIG. 4 illustrates a specific embodiment of a method for a wireless communication device to automatically select a communication frequency band and mode. First, the wireless communication device is turned on (block 402), then the GPS obtains the location of the wireless communication device (block 404), then queries the database to select the frequency band and mode used for this location (block 406), and finally uses the selected frequency band And mode and send registration information (block 408), then come to end (block 410).

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the scope of claims of the present invention; all other equivalent changes or modifications that do not deviate from the spirit disclosed in the present invention should be included in the following within the scope of the stated application claims.

Claims (8)

1. A wireless communication device, comprising: a global positioning system module for obtaining a location of the wireless communication device; A storage module, including a database, which stores a plurality of communication regions and the communication frequency band and mode corresponding to each region; a processing module connected to the GPS module and the storage module; and a mobile communication module connected to the processing module; Wherein, the processing module uses the location and the database to select the frequency band and the mode, and the mobile communication module uses the frequency band and the mode to send a registration message. 2. The wireless communication device as claimed in claim 1, wherein the type of the wireless communication device comprises multi-band, multi-mode, or multi-band multi-mode. 3. The wireless communication device as claimed in claim 1, wherein the database further comprises a function of updating stored content. 4. The wireless communication device as claimed in claim 1, wherein the storage module further comprises a function of recording the location. 5. A method for controlling a wireless communication device, wherein the wireless communication device supports a global positioning system and has a built-in database, the method comprising the following steps: (a) obtain a location of the wireless communication device through the global positioning system; (b) using the location to query the database to select a frequency band and a mode used by the location; and (c) sending a registration message of the wireless communication device using the frequency band and the mode. 6. The method as claimed in claim 5, wherein the steps (a) to (c) are performed when the wireless communication device is turned on. 7. The method of claim 5, wherein the database further comprises a function of updating stored content. 8. The method of claim 5, wherein the step of querying the database further comprises referring to a previous location of the wireless communication device.

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