Analysis Of Mobile Terminal Calling Failure In CDMA Network

In order to meet the development of CDMA cellular technology in China, ensure the interoperability of different manufacturers'system equipment and terminals in the CDMA network, usually, CDMA mobile terminal manufactures will perform field test in the target countries and cities. The CDMA terminals field test in the China mainland market mainly base on the CDMA terminal field test specification which issued by Ministry of Telecommunications Regulatory Authority on February 2003. This specification mainly based on our existing CDMA standards and the ITU,3GPP2 and other standard issued by International Organization Standardization. In accordance with the provisions of test specifications, perform the test in the places where has the real opened CDMA network, test in the areas where strong RF signal and continuous follow-CDMA network has. Test should be considered as far as possible in different terrain conditions. All test items shall be tested at least for once, should retest for the failed items. Indicate special circumstances, failed items should be analyses after all test completed. The original test results should be retained. Terminal manufacturers also refer to the CDG3 (CDMA Development Group) protocol standards related to do the testing.Calling test is an important part among the whole test, Calling success rates is an important indicator to measure CDMA network quality, it is also an important component of fixed-point quality test and field test results, so success rate is directly related to the CDMA mobile communication network quality. Leading to access failure has many reasons; it may come from the network side, also maybe come from mobile terminals. If it is the network side issue, we need to optimize the mobile network; if it is the mobile terminal issue, we have to modify the terminal hardware, software and protocol stack. In order to improve the calling success rates.