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Communication terminal and its non-volatile data processing method

A technology for non-volatile data and communication terminals, which is applied to the processing field of communication terminals and their non-volatile data, can solve the problems that radio frequency parameters cannot be recovered, affect the radio frequency performance of communication terminals, and damage NV data, and achieve accurate Backup, Accurate Error Recovery, Guaranteed Correctness Effect

Active Publication Date: 2017-03-15
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The problem solved by the present invention is that in the normal operation of the communication terminal, the NV data is destroyed due to illegal power failure during the data writing process, and the calibrated radio frequency parameters cannot be restored, thereby affecting the radio frequency performance of the communication terminal

Method used

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  • Communication terminal and its non-volatile data processing method
  • Communication terminal and its non-volatile data processing method
  • Communication terminal and its non-volatile data processing method

Examples

Experimental program
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Embodiment 1

[0050] In the prior art, although the AP side uses two mutually backup partitions to store the NV data, it can ensure that the data in the other partition can be restored after the data in one partition is damaged. However, these two partitions are writable during the normal operation of the communication terminal. Once an illegal power failure occurs during the writing process, the NV data will be destroyed. Hardware-related parameter data cannot be recovered, thereby affecting the radio frequency performance of the communication terminal.

[0051] Therefore, in this embodiment, an NV partition (that is, the fourth partition) is added to the non-volatile memory on the AP side for saving such as calibrated radio frequency parameters, International Mobile Equipment Identity (IMEI, International MobileEquipment Identity), etc. For the parameter data related to hardware equipment, the NV partition is only written once when the communication terminal is calibrated on the productio...

Embodiment 2

[0082] On the basis of the first embodiment, this embodiment also relates to recovering the non-volatile data of the damaged partition.

[0083] The non-volatile data processing method of the communication terminal provided in this embodiment includes: when the modulation and demodulation processing unit performs system initialization, the non-volatile data of the first partition and the second partition are processed by the verification data. volatile data for error checking; if the check data of any data item in the non-volatile data is wrong, it will be recognized that the partition where the non-volatile data is located is destroyed; the non-volatile data stored in the undamaged partition Volatile data recovers non-volatile data from damaged partitions.

[0084] In the specific implementation, when the Modem performs system initialization, the NV data can be checked for errors through the CRC data stored at the back 1K bytes in each storage area. Once the CRC of a certain ...

Embodiment 3

[0091] This embodiment describes the backup process of the NV data when the Modem firmware is downloaded for the first time.

[0092] The existing solution usually uses the AP to upgrade the NV data and back up the parameter data. In this process, the AP needs to analyze the data structure of the NV data of the Modem. However, the NV data of the Modem should be transparent to the AP. There is no need to care about its format and structure, so the existing solution increases the coupling between the AP and the Modem.

[0093] In response to this shortcoming, in this embodiment, an NV partition (i.e. the third partition) is added in the non-volatile memory on the AP side. When downloading the NV data of the Modem, the AP only needs to write the NV data into the NV partition, without Any analysis is required, and the NV data upgrade and parameter data backup are performed by the Modem itself when it is turned on, so as to reduce the coupling between the AP and the Modem.

[0094...

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Abstract

The invention provides a communication terminal and a nonvolatile data processing method of a communication terminal. The communication terminal comprises a modem processing unit and an application processing unit, wherein the modem processing unit is not provided with a nonvolatile memory, a nonvolatile memory arranged on the application processing unit comprises a first partition and a second partition realizing mutual backup, nonvolatile data of the modem processing unit is stored in the first partition and the second partition, the nonvolatile memory of the application processing unit also comprises a fourth partition applicable to the storage of parameter data, relevant to hardware of the communication terminal, in the nonvolatile data of the modem processing unit, and the parameter data includes radio frequency parameters after the calibration; the write operation of the four partition in the normal work of the communication terminal is limited. Through the technical scheme, the problem of difficulty in recovering parameter data such as the radio frequency parameters after the calibration during the nonvolatile data damage due to conditions such as illegal power failure in the data writing process of the communication terminal can be solved.

Description

technical field [0001] The invention relates to the field of communication, in particular to a communication terminal and a method for processing non-volatile data thereof. Background technique [0002] At present, with the rise of smart phones in the communication field, the "AP+Modem" scheme is prevalent, in which AP (Application Processor) can be called an application processing unit, which is responsible for the processing of all applications, and Modem (Modulation demodulation) can be called modulation and demodulation. The call processing unit is responsible for the execution of all communication software. The AP part and the Modem part are separated from each other, and the two communicate through AT commands. For example, when making a call, the AP controls the Modem through the AT command, and when there is an incoming call, the Modem notifies the AP through the AT command. [0003] In order to save costs, the "No NAND Modem" scheme appeared in the "AP+Modem" schem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04M1/725G06F11/10
Inventor 周莹莉张慧敏盛焱新
Owner SPREADTRUM COMM (SHANGHAI) CO LTD