A Just-In-Time Networking Framework for Minimizing Request-Response Latency of Wireless Time-Sensitive Applications
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AbstractThis article puts forth a networking paradigm, referred to as just-in-time (JIT) communication, to support client-server applications with stringent request-response latency requirement. Of interest is not just the round-trip delay of the network, but the actual request-response latency experienced by the application. The JIT framework contains two salient features. At the client side, the communication layer will “pull” a request from the client just when there is an upcoming transmission opportunity from the network. This ensures that the request contains information that is as fresh as possible (e.g., a sensor reading obtained just before the transmission opportunity). At the server side, the network ascertains that the server, after receiving and processing the request to generate a response (e.g., a control command to be sent to the client), will have a transmission opportunity at just this time. We realize the JIT system, including the protocol stack, over a time-division-multiple-access (TDMA) network implemented on a System-on-Chip (SoC) platform. We prove that a TDMA network with a power-of-2 time slots per superframe is optimal for realizing the server-side JIT function. Our experimental results validate that JIT networks can yield significantly lower request-response latency than networks without JIT support can.
All Author(s) ListL. Zhang, S. C. Liew, H. Chen
Journal nameIEEE Internet of Things Journal
Year2023
Month4
Volume Number10
Issue Number8
PublisherIEEE
Place of PublicationUSA
Pages7126 - 7142
ISSN2327-4662
LanguagesEnglish-United States
KeywordsApplication-to-application round trip time
(RTT), just in time, time-division-multiple-access (TDMA), wireless time-sensitive networking
(RTT), just in time, time-division-multiple-access (TDMA), wireless time-sensitive networking
