基于实时SPI的无线电控制解决非对称多核LTE系统的硬件争用

2016 3rd International Conference on Advanced Computing and Communication Systems (ICACCS) Pub Date : 1900-01-01 DOI:10.1109/ICACCS.2016.7586338

P. Srivastava, Harninder Rai, Pankaj Chauhan

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引用次数: 0

摘要

本文讨论了一种基于共享串行外设接口(SPI)的长期演进(LTE)第1层(L1)时分双工(TDD)软实时系统与Linux实时操作系统之间竞争的软件解决方案。非对称多处理器系统的核心对彼此的活动不可知，在不存在同步机制的情况下实时共享SPI。该解决方案通过将非确定性SPI事务转换为外部触发的确定性SPI事务，有效地降低了争用的可能性，并提供了在高L1负载场景下检测争用的机制。在争用的情况下，作为提议的解决方案的一部分，将采用有效的重试机制。本文最后提供了可以利用所建议的解决方案的各种场景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Real-time SPI based radio control solving Hardware contention for asymmetric multicore LTE systems

The paper discusses a software solution for contention between Long Term Evolution (LTE) layer 1 (L1) Time Division Duplex (TDD) software which is a soft real time system with strict timing compliance requirements and Linux Real Time operating system over shared Serial Peripheral Interface (SPI). The cores of the asymmetric multiprocessor systems are agnostic to each other's activities and share SPI in real time with no synchronization mechanism existing between them. The solution effectively mitigates the possibility of contention by converting non deterministic SPI transactions into externally triggered deterministic SPI transactions and provides mechanism to detect contention if it occurs under high L1 load scenarios. In the case of contention, an effective retry mechanism is put in place as a part of proposed solution. The paper concludes by providing various scenarios in which the proposed solution can be leveraged.

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2016 3rd International Conference on Advanced Computing and Communication Systems (ICACCS)

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