GSM cell synchronization method, device and mobile terminal under LTE+GSM dual-card LTE packet switching
A packet switching and cell synchronization technology, which is applied in synchronization devices, wireless communication, network traffic/resource management, etc., can solve problems such as easy collision, lengthened search cycle, and multiple divisions, so as to reduce the impact of the rate and improve the stability of performance Effect
Active Publication Date: 2020-12-22
SPREADTRUM COMM (SHANGHAI) CO LTD
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Problems solved by technology
[0005] The unit of 12 frames + 1 time slot has a greater impact on the rate of the LTE packet switching process; the unit of single frame + 1 time slot has more data packets, and the process of deleting data packets at the same time Large consumption and too many divisions are prone to collisions, resulting in longer search cycles
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[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0037] The present invention provides a GSM cell synchronization method under LTE+GSM dual-card LTE packet switching, such as figure 1 As shown, the method includes:
[0038] S11. Select position A in the paging channel PCH of the GSM card, wherein the interval between the current position and position A is the receiving length, and the shor...
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The invention provides a GSM cell synchronization method, a device and a mobile terminal in the LTE packet switching condition of LTE + GSM double cards. The method comprises the following steps of selecting a position A of a GSM card in a paging indicator channel (PICH), wherein the shortest interval between a current location and the position A is the sum of four GSM frames plus 1 GSM time slotand other task conflicts are avoided for the first section of the search task of a cell at the current location; sending a cache state BSR = 0 to the network side, and recovering the BSR after the task is completed; judging a GSM synchronization position is found within the shortest interval of the four GSM frames plus 1 GSM time slot or not during a first section of the search task of the cell; when the GSM synchronization position is found out during the first section of the search task of the cell, successfully completing the synchronization. According to the invention, on the premise thatthe GSM synchronization performance is considered, the number of times in knocking out LTE data packets is reduced at the same time. The rate influence on the data service of the LTE is reduced, and the terminal network stability is greatly improved.
Description
technical field [0001] The invention relates to the technical field of mobile communication, in particular to a method, a device and a mobile terminal for synchronizing GSM cells under LTE packet switching with LTE+GSM dual cards. Background technique [0002] With the increasingly powerful mobile phone technology and the increasing demand for mobile phone functions, the LTE+GSM dual-card mode has been widely used in the mobile phone market. The synchronization task of the GSM cell or the GSM card cell. The completion of the synchronization task of these GSM cells needs to be completed by destroying the LTE data packet. How to solve the GSM synchronization on the premise of relatively small impact on the LTE data packet switching service is the key problem currently facing. [0003] In traditional GSM synchronization, the unit of 12 frames + 1 time slot is used for synchronization, or the newer method can also be based on a single frame + 1 time slot. [0004] In the proces...
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IPC IPC(8): H04W28/04H04W56/00H04W64/00H04W68/02H04W88/06
CPCH04W56/003H04W64/00H04W68/02H04W88/06
Inventor 孙强
Owner SPREADTRUM COMM (SHANGHAI) CO LTD