安卓嵌入式平台中的超短波通信软件设计与实现

发布时间：2019-06-09 20:06

【摘要】：无基站通信条件下，超短波无线通信技术被广泛地应用于军用、救灾现场和应急保障通信等场景中。在超短波通信应用于个人通信领域之后，超短波通信设备也逐渐向着小型化、智能化和高性能化发展。随着超短波通信设备小型化和高性能化，小型平台如常见手持平台通过硬件升级来提高无线通信承载能力或满足多元化应用，这将导致功耗大幅上升。针对这个问题，智能操作系统通过较为完善的电源管理机制，提高整个平台的供电效率，延长电池使用寿命。但是，当前大部分比较成熟的智能操作系统都处于封闭或半开源状态，不利于自定义通信协议栈，实现针对特定硬件平台的开发和优化。为此，本文利用Android智能手机操作系统的开源特性[1]，在Android操作系统上设计并开发了超短波通信手持式平台软件，实现了超短波宽带通信业务服务，并具有良好的操作性、维护性及扩展性。首先，提出超短波手持式平台的总体功能。超短波通信平台功能上实现短信和数字语音业务，性能上满足数据传输率和误码率需求，保证通信效率和可靠性。其次，构建超短波手持式平台的业务管理框架。详细定义业务信令格式和从上层至底层以信令为主线的完整设计流程，整合业务应用层数据和语音模块的数据接入功能，有效支撑通信业务的运作和管理。再次，设计并实现超短波手持式平台的业务管理层和底层数据传输模块。基于Android操作系统的系统框架和内部运行机制，划分业务层次和功能模块，，给出具体的实现方式和流程控制，同时在底层支持全双工通信的数据传输模式。最后，验证超短波手持式平台软件的通信业务处理能力。分别对上层软件、底层语音模块驱动和整体功能进行测试，并给出整个通信平台的误码率测试结果。 Android操作系统为无线通信终端的开发和应用提供开源的系统级解决方案。本文对超短波通信的开发拓宽了Android在手持式平台上的无线功能，在其他网络不可用或不畅时完成应急通信，具有一定的实用价值。
[Abstract]:Under the condition of no base station communication, ultra-short wave wireless communication technology is widely used in military, disaster relief site and emergency support communication and other scenarios. After the application of ultra-short wave communication in the field of personal communication, ultra-short wave communication equipment is gradually developing towards miniaturization, intelligence and high performance. With the miniaturization and high performance of ultra-short wave communication equipment, small platforms, such as common handheld platforms, can improve the carrying capacity of wireless communication or meet the needs of diversified applications through hardware upgrades, which will lead to a significant increase in power consumption. In order to solve this problem, the intelligent operating system improves the power supply efficiency of the whole platform and prolongs the battery life through a more perfect power management mechanism. However, most of the mature intelligent operating systems are in a closed or semi-open source state, which is not conducive to custom communication protocol stack, and realizes the development and optimization of specific hardware platforms. Therefore, based on the open source characteristics of Android smartphone operating system [1], this paper designs and develops the handheld platform software of ultra-short wave communication on Android operating system, realizes the service of ultra short wave broadband communication service, and has good operation. Maintenance and expansibility. First of all, the overall function of ultra-short wave handheld platform is put forward. The ultra-short wave communication platform realizes short message and digital voice services in function, meets the requirements of data transmission rate and bit error rate in performance, and ensures the communication efficiency and reliability. Secondly, the service management framework of ultra-short wave handheld platform is constructed. The service signaling format and the complete design flow with signaling as the main line from the upper layer to the bottom are defined in detail, and the data access function of the service application layer data and voice module is integrated to effectively support the operation and management of the communication service. Thirdly, the service management and the underlying data transmission module of the ultra-short wave handheld platform are designed and implemented. Based on the system framework and internal running mechanism of Android operating system, the service level and function module are divided, and the concrete implementation mode and process control are given. at the same time, the data transmission mode supporting full duplex communication at the bottom level is given. Finally, the communication service processing ability of ultra-short wave handheld platform software is verified. The upper software, the underlying voice module driver and the overall function are tested respectively, and the BER test results of the whole communication platform are given. Android operating system provides an open source system-level solution for the development and application of wireless communication terminals. In this paper, the development of ultra-short wave communication broadens the wireless function of Android on handheld platform, and completes emergency communication when other networks are not available or unsmooth, which has certain practical value.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TN925;TP368.1

【参考文献】