Accelerating acquisition of a preferred cellular system by a portable communication device using position location
A technology of mobile communication equipment and mobile communication system, which is applied in the direction of wireless communication, selection device, electrical components, etc., and can solve the problems of user inconvenience and long time
Inactive Publication Date: 2004-06-16
QUALCOMM INC
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Problems solved by technology
This search process is inconvenient for the user as it can take a long time, sometimes up to several minutes
[0015] Currently available algorithms take an "educated guess" at the correct geographic area by looking at the obtained SID, but only when the mobile communication device acquires a known system (i.e., a system whose SID is in the roaming list) to work properly
Method used
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[0027] It will be appreciated that the drawings and description of the present invention have been simplified in order to illustrate elements that are relevant to a clear understanding of the present invention, while many other elements found in typical communication devices and systems have been eliminated for the sake of brevity. Those skilled in the art will appreciate that other elements are desirable and / or required in order to practice the present invention. However, since such elements are well known in the art, and since they would not facilitate a better understanding of the invention, a discussion of such elements is not provided here.
[0028] figure 2 is a block diagram illustrating the mobile communication device 100 . Device 100 may include a signal transmitter 102, a signal receiver 104, an information inlet 106, a processor and / or memory 108, including a static table 110, and in a preferred embodiment a locator 120 and a position translator 122.
[0029] Sig...
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A mobile communication device, and a method of connecting a mobile device to a preferred communication system, are disclosed. The mobile communication device includes a signal sender, a signal receiver, and a processor and memory. The processor and memory include a static table, and are in communication with the signal sender and the signal receiver. The processor and memory match a location of the device directly to at least one preferred system. The mobile communication system includes at least one base station and the at least one mobile communication device. The method includes the step of locating of the mobile communication device, the step of converting the location generated into a position range, the step of matching the position range to at least one preferred SID index for the position range using the lookup table, the step of selecting the preferred SID from a roaming list, wherein the preferred SID is corespondent to the at least one preferred SID index, and the step of connecting the mobile communication device to a channel correspondent to the preferred system indicated by the preferred SID.
Description
Background of the invention [0001] related application [0002] This application claims priority to US co-pending Application No. 60 / 276,378, filed March 16,2001. [0003] field of invention [0004] The present invention relates generally to methods and apparatus for cellular system acquisition, and more particularly to accelerating the acquisition of a preferred cellular system using position location by a portable communication device. [0005] background description [0006] When a mobile station device or mobile communication device such as a portable telephone is powered on, ie activated, the mobile communication device searches for a signal from a base station. Mobile communication devices must register with the appropriate base stations in order to provide service to users. At a given time, an active portable communication device 10 may see signals from several different base stations 20, 30, 40, 50, some of which are local 20 and some of which are roaming bas...
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IPC IPC(8): H04W48/18
CPCH04W48/18
Inventor R·克里希南
Owner QUALCOMM INC