CN101917779A - Method and device for automatically adapting to wireless modules with different network standards - Google Patents
Method and device for automatically adapting to wireless modules with different network standards Download PDFInfo
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Abstract
The invention discloses a method for automatically adapting to wireless modules with different network standards, which comprises the step of storing a shared library corresponding to the different network standards in an MID. The method also comprises that: after the MID is started, an initialization process in an Android system starts an RILD process; the RILD process transmits an AT command to a current wireless module in the MID and acquires a network standard supported by the current wireless module; and the shared library which corresponds to the network standard is loaded according to the acquired network standard supported by the current wireless module. The invention also discloses a device for automatically adapting to the wireless modules with different network standards. The method can conveniently switch the network standards in the MID and reduce the development and maintenance cost of MID products.
Description
Technical field
The present invention relates to the network formats configuring technical that peace causes mobile internet device in (Android) system platform, relate in particular to a kind of method and device of automatically adapting to wireless modules with different network standards.
Background technology
Along with Internet development, it is more and more obvious to move interconnected trend, people press for a kind of low in energy consumption, product size is little, can get online without being tethered to a cable whenever and wherever possible; And, enough handle daily use on the performance, can have the compatible fully a kind of wireless terminal product of content now with the Internet again, so mobile internet device (MID, Mobile Internet Device) arises at the historic moment.MID is the mini notebook computer of being released by Intel in IDF (IDF, Intel Developer Forum) in 2008 conference of a kind of new ideas, is that a kind of volume is less than notebook computer, but greater than the mobile internet apparatus of mobile phone; By MID, the user can enter the Internet, enjoys amusement at any time, carries out operations such as information inquiry, mail transmission/reception.The MID product has obtained flourish till now, has also added more, more practical functions such as voice call, DPF in addition.
Open mobile phone alliance of in November, 2007 (OHA, Open Handset Alliance) sets up, and has issued the open cell phone software platform of Android by name.The Android platform is made up of operating system, user interface and application program based on the Linux technology, allows the developer freely to obtain, revise source code, is the mobile phone terminal solution that a cover has the character of increasing income.Participate in the manufacturer of OHA alliance, all carry out new mobile phone business exploitation, form the mobile phone that uses the Android system based on the Android platform.Along with the continual renovation and the upgrading of Android system, up to the present, continue to bring out based on the mobile phone of Android platform, MID, net book etc., and development rapidly, function is abundant and powerful more.
At present, the third generation (3G) mobile communications network comprises the network of multiple standard, as: Wideband Code Division Multiple Access (WCDMA) (WCDMA, Wideband Code Division Multiple Access), CDMA2000 (CodeDivision Multiple Access 2000), and TD SDMA (TD-SCDMA, TimeDivision-Synchronous Code Division Multiple Access) or the like, and popular MID on the market based on the Android platform, mostly only support a kind of 3G network standard, the user is after buying the MID that supports a kind of network formats, just can't change or be upgraded to other network formats, unless buy the MID of other network formats again.So, though the user can be according to wish and the hobby of oneself, the MID of the network formats that selection support is liked oneself, but if switch to another kind of network formats from a kind of network formats, just must buy the MID that more renews again, obviously like this, increased use cost, and very inconvenient, be very important for the user provides a kind of MID product that can automatic adaptive multiple network standard.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method and device of automatically adapting to wireless modules with different network standards, can carry out the switching of network formats among the MID easily, reduces the use cost of product.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of method of automatically adapting to wireless modules with different network standards, the shared library of storage different network formats correspondence in MID; This method also comprises:
After MID started, the initialize process in the Android system started the RILD process;
RILD process current wireless module in MID sends the AT order, obtains the network formats that the current wireless module is supported;
According to the network formats that the current wireless module that obtains is supported, load the shared library of described network formats correspondence.
In the such scheme, when MID started, this method also comprised: the shared library path of the network formats correspondence that various wireless module is supported is imported in the RILD process.
In the such scheme, the network formats of described acquisition current wireless module support is: the RILD process receives the AT command response that the current wireless module is returned, and obtains the network formats that the current wireless module is supported according to the return value in the AT command response.
In the such scheme, described network formats according to the support of the acquisition of the return value in AT command response current wireless module is: the return value in the described AT command response is 1 o'clock, and the network formats of current wireless module support is the WCDMA standard; Return value in the described AT command response is 2 o'clock, and the network formats of current wireless module support is the CDMA2000 standard; Return value in the described AT command response is 3 o'clock, and the network formats of current wireless module support is the TD-SCDMA standard; Return value in the described AT command response is 0 o'clock, and wireless module is not supported current any network formats.
In the such scheme, when the RILD process obtains the network formats of current wireless module support, also further obtain all network formats in current MID region by wireless module.
The present invention also provides a kind of device of automatically adapting to wireless modules with different network standards, and this device comprises: primary processor, memory module, wireless module interface and wireless module; Wherein,
Primary processor is used for starting back control Android system start-up at MID, starts the RILD process by the initialize process in the Android system, and sends the AT order by the RILD process to wireless module, obtains the network formats that the current wireless module is supported; Also be used to control the shared library of the network formats correspondence that the Android system loads obtained;
Memory module is used to store the shared library of different network formats correspondence;
The wireless module interface, the AT order that is used for the RILD process is sent sends wireless module to, and the network formats that wireless module self is supported returns to the RILD process;
Wireless module is used to receive the AT order that the RILD process is sent, and discerns the network formats of self supporting, and returns the network formats of self supporting to the RILD process.
Wherein, the network formats self supported of described wireless module identification is: the software version number of self and the software version number of diverse network standard are compared, and return the value of the identical network formats correspondence of software version number.
In the such scheme, described memory module also is used for store executable code, important parameter and ephemeral data.Described memory module is FLASH or synchronous DRAM; Described wireless module interface adopts PCIE interface, USB (universal serial bus).
The method of automatically adapting to wireless modules with different network standards provided by the invention and device, the shared library of diverse network standard is supported in storage in MID, the wireless module of which kind of network formats of current employing among the MID no matter, can send the AT order by the wireless module of RILD (the Radio Interface Layer Daemon) process among the MID in MID, inquiry obtains the network formats that the current wireless module is supported among the MID, and the shared library of the network formats correspondence that dynamic load obtained, thereby realize the adaptive automatically of network formats, so, the user only need change the wireless module among the MID, and need not to buy again whole M ID, just can switch to another kind of network formats from a kind of network formats.Like this, not only concerning the user, save use cost greatly, simplified operation; And for MID production firm, by changing the wireless module handover network standard among the MID, the MID product that both can release seriation, many network formats can be saved a large amount of development and maintenance costs again with the response market demand.
Description of drawings
Fig. 1 is the composition structural representation of the device of automatically adapting to wireless modules with different network standards of the present invention;
Fig. 2 is the composition structural representation of Android system among the present invention;
Fig. 3 is the realization flow schematic diagram of the method for automatically adapting to wireless modules with different network standards of the present invention.
Embodiment
Owing to support the wireless module of each network formats among the MID, from cost and the big or small sub-fraction that all only accounts for whole M ID product; And,, just can switch to another kind of network formats from a kind of network formats as long as upgrade different wireless modules.But, after wireless module among the MID upgrades, just there is the problem of network formats how to discern the support of current wireless module, therefore, basic thought of the present invention is: the shared library of diverse network standard is supported in storage in MID, after MID starts, sends the AT order by the current wireless module in MID of the RILD process among the MID, obtain the network formats that the current wireless module is supported among the MID, and according to the shared library of this network formats correspondence of network formats dynamic load that obtains.
Generally, MID just moves the Android system after starting, after the Android system start-up, initialize process in the Android system can start the RILD process in the Android system automatically, send the AT order by the wireless module of RILD process in MID again, and obtain the network formats that the current wireless module is supported according to the AT command response.
The present invention is further described in more detail below in conjunction with drawings and the specific embodiments.
Fig. 1 is the composition structural representation of the device of automatically adapting to wireless modules with different network standards of the present invention, and as shown in Figure 1, this device comprises primary processor 101, memory module 102, wireless module interface 103, wireless module 104; Wherein,
Concrete, primary processor 101 controls are loaded into the Android system start-up of self, start the RILD process by the initialize process in the Android system, and import the name of the pairing shared library of each network formats into the RILD process with parametric form; The RILD process sends the AT order to wireless module 104, and according to the AT command response that wireless module 104 returns, obtains the network formats that current wireless module 104 is supported, and the corresponding shared library of network formats supported of control loaded and current wireless module; Wherein, described loading is finished by the wireless adaptation module in the Android system.
Here, memory module can adopt FLASH or synchronous DRAM (SDRAM, Synchronous Dynamic Random Access Memory).
Among the present invention, for the network formats of every kind of wireless module support encapsulates an independently shared library, this shared library is stored in the memory module 102.
Here, wireless module 104 for the adaptive multiple network standard of energy, must guarantee the primary processor 101 of MID and the normal communication between the wireless data card, this just requires wireless module interface 103 must adopt general standard interface, as PCIE (PCI-Express) interface, USB (USB, Universal SerialBUS) interface etc.
Here, the method for the network formats self supported of wireless module 104 identification is: the software version number of self and the software version number of diverse network standard are compared, and return the value of the identical network formats correspondence of software version number.Concrete, if the software version number of wireless module 104 is identical with the software version number of WCDMA standard, then the return value of AT command response is 1, and wireless module support WCDMA standard is described; If the software version number of wireless module 104 is identical with the software version number of CDMA2000 standard, then the return value of AT command response is 2, and wireless module support CDMA2000 standard is described; If the software version number of wireless module 104 is identical with the software version number of TD-SCDMA standard, wireless module support TD-SCDMA standard is described, then AT order return value is 3; If all inequality, then the return value of AT command response is 0, illustrates that wireless module do not support current any network formats.
Key of the present invention is: MID can support a plurality of wireless modules of different network formats, as: the wireless module of WCDMA, CDMA2000, TD-SCDMA network formats, that is to say, store the pairing shared library of different network formats among the MID in advance, after MID starts, send the network formats that current wireless module among the MID was inquired about and obtained in the AT order by the RILD process, the shared library that loads current wireless module institute network enabled standard correspondence afterwards gets final product.
This device also comprises: the power interface 105, the indicator light 106 that are used to connect power supply adaptor.
The angle that Fig. 1 forms from device is described each part the MID, and the angle of forming from the Android system is described further to the framework of operating system the MID below.
Fig. 2 is the composition structural representation of Android system among the present invention, as shown in Figure 2, the Android system mainly comprises three layers: the bottom is a linux kernel, the superiors are upper level applications, and the intermediate layer comprises BootLoader boot, initialize process, wireless adaptation module and multi-media module; Wherein,
Linux kernel, complete operation system common function comprises process scheduling, memory management, file management etc.;
The BootLoader boot is first section program moving after the Android system power-up, is responsible for device initialize and loads linux kernel and file system.
Initialize process is mainly used to carry out each configuration file, starts associated process, as the RILD process etc., and finishes initial work after the Android system start-up.
Wherein, the driver in the initialize process can be finished the loading to wireless module 104.
The wireless adaptation module is used for the shared library according to 104 network enabled standards of control loaded MID current wireless module correspondence of primary processor 101, can normally move to guarantee upper level applications.
Multi-media module, mainly finish various audio-video frequency medias broadcast, work such as record.
The upper strata of BootLoader boot, initialize process, wireless adaptation module and multi-media module is a upper level applications, comprises various upper level applications.
Fig. 3 is the realization flow schematic diagram of the method for the automatic adaptive multiple network standard wireless module of the present invention, and as shown in Figure 3, this method may further comprise the steps:
Among the present invention,, and in MID, store the pairing shared library of different network formats with the operating system of Android system as MID.
Here, the RILD process is an independently backstage finger daemon, behind BootLoader boot program loads linux kernel, starts initialize process, initialize process initialization RILD process; Wherein, the function of RILD process is: receive Android system upper level applications and send the communication instruction that gets off, and be converted to AT order and send to wireless module, receive the AT command response of wireless module feedback simultaneously, and send to Android system upper level applications.
Here, Android system initialization script file init.rc, the start-up parameter false code of amended RILD process is as follows:
service?ril-daemon/system/bin/rild\
-w/system/lib/libwcdma-ril.so\
-c/system/lib/libcdma2000-ril.so\
-t/system/lib/libtd-scdma-ril.so\
---d/dev/ttyU?SB?1
Wherein, libwcdma-ril.so, libcdma2000-ril.so and libtdscdma-ril.so are respectively the names of WCDMA, CDMA2000 and three kinds of pairing shared library of network formats of TD-SCDMA, and ttyUSB1 is a wireless module corresponding equipment filename.
If detecting the network formats of current wireless module support among the MID is the WCDMA standard, then continue execution in step 304; If detecting the network formats of current wireless module support among the MID is the CDMA2000 standard, then continue execution in step 305; If detecting the network formats of current wireless module support among the MID is the TD-SCDMA standard, then continue execution in step 306; Do not support current any network formats if detect among the MID current wireless module, then finish current handling process.
Here, the method of the network formats that wireless module identification is supported self is: the software version number of self and the software version number of diverse network standard are compared, and return the value of the identical network formats correspondence of software version number, this value is the return value in the AT command response.
In the example of practical application, can adopt following false code to realize:
/ * returned value specification:
* 0 represent module not match
* 1 represent the WCDMA standard
* 2 represent the CDMA2000 standard
* 3 represent the TD-SCDMA standard
*/
int?get3GNetworkFormat(const?char*devicePath)
{
int?fd_device；
char?v?ersion[MAX_LEN]；
/ * opens wireless module.*/
fd_device＝open(devicePath，O_RDWR)；
/ * sends the AT order, supposes according to the software version of software module and discerns
* different network formats.Can take different orders in the specific implementation.
*/
write(fd_device，″AT+CGMR\r″sizeof(″AT+CGMR\r″))；
/ * obtains the response of AT order.*/
read(f?d_device，version，MAX_LEN)；
/ * judges it is which kind of network formats according to the response of AT order.*/
If (strcmp (version, WCDMA standard module software release)==0)
return?1；
Else if (strcmp (version, CDMA2000 standard module software release)==0)
return?2；
Else if (strcmp (version, TD-SCDMA standard module software release)==0)
return?3；
else
return?0；
}
Further, this step can also obtain all network formats in current MID region by the current wireless module, as: TD-SCDMA, WCDMA, mobile 2G, the 2G of UNICOM or the like, wherein mobile 2G and the 2G of UNICOM network all adopt global system for mobile communications (GSM, Global System for MobileCommunications) network formats; Accordingly, the user can change the wireless module of current use among the MID, and then use required network that service is provided according to all network formats and self needs in current MID region that obtain.
In the practical application, the user can detect all network formats in current MID region by the current wireless module, but the user can only register with current MID in the identical network formats of network formats of wireless module, such as: all network formats in current MID region comprise: TD-SCDMA, WCDMA, mobile 2G, 2G of UNICOM or the like, though the wireless module among the MID can detect above-mentioned diverse network standard, if but the network formats of current wireless module support is mobile 2G, then the user can only be registered to mobile GSM network, all the other diverse network standard MID all can't register, that is to say, MID just has signal under the network formats of mobile 2G, wireless module among the MID could be connected with external network, and then the various services of using this network formats to provide.
For can automatic adaptive multiple network standard wireless module, the shared library path of the network formats correspondence that MID just supports various wireless module when starting is imported in the RILD process, therefore, the network formats that MID supports according to the current wireless module, the start-up parameter of revising the pairing RILD process of this wireless module in the initialization script gets final product control loaded.
Particularly, after MID starts,, then needn't revise the start-up parameter of RILD process if the name of the corresponding shared library of the start-up parameter of RILD process and the network formats of current wireless module support is identical; If different, then need the shared library name of the network formats correspondence supported according to current wireless module among the MID to revise the start-up parameter of RILD process.
Example pseudo-code is as follows:
void?loadLibrary(void)
{
……
void*dlhandle；
int?networkFormat；
networkFormat＝get3GNetworkFormat(s_devicePath)；
if(networkFormat＝＝1)
/ * loads the pairing shared library of WCDMA standard.*/
dlhandle＝dlopen(WcdmaLibPath，RTLD_NOW)；
else?if(networkFormat＝＝2)
/ * loads the pairing shared library of CDMA2000 standard.*/
dlhandle＝dlopen(cdma2000LibPath，RTLD_NOW)；
else?if(networkFormat＝＝3)
/ * loads the pairing shared library of TD-SCDMA standard.*/
dlhandle＝dlopen(tdscdmaLibPath，RTLD_NOW)；
else
/ * reports an error and terminator.*/
ErrorAndAbort()；
}
By the MID among the present invention, the user can change the wireless module of supporting this network formats according to the network formats of current MID region, realizes the switching between the different radio module.Under the normal operating conditions of wireless module, both can realize and the call function of wireless or wire user by the wireless module among the MID, can insert Internet again.In addition, on the basis of this MID, can also expand many new functions, as adding video telephone function etc.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the method for an automatically adapting to wireless modules with different network standards is characterized in that, the shared library of storage different network formats correspondence in MID; This method also comprises:
After MID started, the initialize process in the Android system started the RILD process;
RILD process current wireless module in MID sends the AT order, obtains the network formats that the current wireless module is supported;
According to the network formats that the current wireless module that obtains is supported, load the shared library of described network formats correspondence.
2. method according to claim 1 is characterized in that, when MID started, this method also comprised: the shared library path of the network formats correspondence that various wireless module is supported is imported in the RILD process.
3. method according to claim 1, it is characterized in that, the network formats of described acquisition current wireless module support is: the RILD process receives the AT command response that the current wireless module is returned, and obtains the network formats that the current wireless module is supported according to the return value in the AT command response.
4. method according to claim 3 is characterized in that, described network formats according to the support of the acquisition of the return value in AT command response current wireless module is:
Return value in the described AT command response is 1 o'clock, and the network formats of current wireless module support is the WCDMA standard; Return value in the described AT command response is 2 o'clock, and the network formats of current wireless module support is the CDMA2000 standard; Return value in the described AT command response is 3 o'clock, and the network formats of current wireless module support is the TD-SCDMA standard; Return value in the described AT command response is 0 o'clock, and wireless module is not supported current any network formats.
5. method according to claim 1 is characterized in that, when the RILD process obtains the network formats of current wireless module support, also further obtains all network formats in current MID region by wireless module.
6. the device of an automatically adapting to wireless modules with different network standards is characterized in that, this device comprises: primary processor, memory module, wireless module interface and wireless module; Wherein,
Primary processor is used for starting back control Android system start-up at MID, starts the RILD process by the initialize process in the Android system, and sends the AT order by the RILD process to wireless module, obtains the network formats that the current wireless module is supported; Also be used to control the shared library of the network formats correspondence that the Android system loads obtained;
Memory module is used to store the shared library of different network formats correspondence;
The wireless module interface, the AT order that is used for the RILD process is sent sends wireless module to, and the network formats that wireless module self is supported returns to the RILD process;
Wireless module is used to receive the AT order that the RILD process is sent, and discerns the network formats of self supporting, and returns the network formats of self supporting to the RILD process.
7. device according to claim 6, it is characterized in that, the network formats that described wireless module identification is supported self is: the software version number of self and the software version number of diverse network standard are compared, and return the value of the identical network formats correspondence of software version number.
8. device according to claim 7 is characterized in that, the network formats of described acquisition current wireless module support is:
Described return value is 1 o'clock, and the network formats of current wireless module support is the WCDMA standard; Described return value is 2 o'clock, and the network formats of current wireless module support is the CDMA2000 standard; Described return value is 3 o'clock, and the network formats of current wireless module support is the TD-SCDMA standard; Described return value is 0 o'clock, and wireless module is not supported current any network formats.
9. according to claim 6,7 or 8 described devices, it is characterized in that described memory module also is used for store executable code, important parameter and ephemeral data.
10. according to claim 6,7 or 8 described devices, it is characterized in that described memory module is FLASH or synchronous DRAM;
Described wireless module interface adopts PCIE interface, USB (universal serial bus).
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| CN104010388B (en) * | 2014-06-11 | 2019-09-10 | 厦门雅迅网络股份有限公司 | A kind of method that vehicle mobile terminals realize adaptive wireless communication module |
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Application publication date: 20101215 |