Network searching method for GSM terminal

Abstract

A network searching process capable of rapidly searching network GSM (global digital mobile telephone system) terminal within RF (wireless frequency) shadow area comprises the following steps: step 1 that if a wireless frequency (RF) shadow area is entered, the network is search aiming at the frequency range set in advance; step 2 that if the mentioned above searching results show that a network with a frequency connected with the terminal does not exist, the network searching is stopped, the other network searching is executed aiming at the recent frequency listing stored in the terminal with the period set in advance; step 3 that if the results of the network searching aiming at the frequency listing mentioned above show that a network with a frequency connected with the terminal does not exist, a network searching aiming at the frequency range set in advance is executed again after the preset time set in advance. In accordance with the present invention, defects existing in known technology are conquered, base stations capable of being connected can be searched rapidly in the RF shadow area and dissatisfaction of user can be eliminated.

Description

technical field [0001] The invention relates to a network search method (METHOD FOR SEARCHING NETWORKIN GSM TERMINAL) of a GSM terminal, in particular to a network search method for a GSM terminal that can rapidly search the network in a radio frequency (RF) shadow area. Background technique [0002] Generally speaking, when a GSM terminal moves to an RF (Radio Frequency) shaded area where communication services cannot be obtained, messages such as "out of the call circle" or "No Service" will be displayed on the display screen of the terminal, or a message indicating the callable state will be displayed. The antenna logo disappears. [0003] After the GSM terminal enters the RF shadow area, it searches for a network that can be connected. At this time, the network search is to continuously and repeatedly search all corresponding wireless frequencies (or frequencies in a predetermined range) until a frequency with a synchronizable signal strength is found. However, since th...

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Problems solved by technology

[0011] However, this known network search method has the following problems: due to the predetermined time without searching the network, there may be a network that can be connected to the terminal, and in addition, when the user enters the shadow area, the time to come out is shorter than the time set above , although it can be connected to the base station, it will be displayed as a non-service area due to no network search, which will increase user dissatisfaction

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