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GB/T 28787-2023 PDF English

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GB/T 28787-2023: Data communication protocol between intelligent terminal and dispatching center for urban bus and trolleybus
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Status: Valid

GB/T 28787: Historical versions

Standard IDUSDBUY PDFDeliveryStandard Title (Description)Status
GB/T 28787-2023620 Add to Cart Auto, 9 seconds. Data communication protocol between intelligent terminal and dispatching center for urban bus and trolleybus Valid
GB/T 28787-2012RFQ ASK 7 days Data communication protocol between on-board information terminal of urban public transit dispatching and control center Obsolete

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GB/T 28787-2023: Data communication protocol between intelligent terminal and dispatching center for urban bus and trolleybus


---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT28787-2023
GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 35.100.70;35.240.60 CCS L 79 Replacing GB/T 28787-2012 Data communication protocol between intelligent terminal and dispatching center for urban bus and trolley bus ISSUED ON: MARCH 17, 2023 IMPLEMENTED ON: OCTOBER 01, 2023 Issued by: State Administration for Market Regulation; Standardization Administration of the People's Republic of China.

Table of Contents

Foreword ... 3 1 Scope ... 5 2 Normative references ... 5 3 Terms and definitions, abbreviations ... 5 4 Protocol basis ... 8 5 Communication connection... 8 6 Message processing ... 8 7 Data format ... 9 Annex A (normative) Message comparison ... 49 Bibliography ... 52 Data communication protocol between intelligent terminal and dispatching center for urban bus and trolley bus

1 Scope

This document specifies the protocol basis, communication connection, message processing and data format for data communication between intelligent terminal and dispatching center for urban bus and trolley bus. This document is applicable to the data communication between intelligent terminal and dispatching center for urban bus and trolley bus through wireless transmission channels.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 32852.1-2016, Urban passenger transportation terminology - Part 1: General terminology JT/T 808-2019, GNSS for operating vehicles - General specifications for vehicle terminal communication protocol and data format JT/T 1076-2016, GNSS system for operating vehicles - Technical specification for onboard video terminals JT/T 1078-2016, GNSS system for operating vehicles - Video communication protocol

3 Terms and definitions, abbreviations

3.1 Terms and definitions For the purposes of this document, the terms and definitions defined in GB/T 32852.1- 2016 as well as the followings apply. 3.1.1 origin station; primary station On a bus line, a start-end station that is equipped with a master scheduler. The total mileage traveled by a delivery vehicle during the operation service process, including passenger mileage and empty mileage. [Source: GB/T 32852.1-2016, 8.6] 3.1.11 dispatching center A place for remote dispatching of operating vehicles on multiple lines. [Source: GB/T 32852.2-2018, 3.3.2] 3.1.12 transit signal priority According to the real-time monitored traffic conditions at intersections or historical traffic data, combined with the real-time passenger state of bus operating vehicles and the state of arriving earlier & later, priority signal timing is provided for bus operating vehicles, so that buses and trolley buses can pass in priority over other vehicles. 3.1.13 display plate for vehicle running position The vehicle is marked with the name of the route and the names of the stops. There is an indicator light showing the current running position of the vehicle and the running direction of the vehicle. [Source: GB/T 32852.2-2018, 3.5.24] 3.2 Abbreviations The following abbreviations apply to this document. CAN: Controller Area Network FTP: File Transfer Protocol GBK: Chinese Internal Code Specification HTTP: Hyper Text Transfer Protocol ID: Identity IP: Internet Protocol LCD: Liquid Crystal Display LED: Light Emitting Diode RSA: An asymmetric cryptographic algorithm (developed by Ron Rivest, Adi Shamir, Leonard Adleman, named after the names of the three) TCP: Transmission Control Protocol 6.2 The classification, requirements and encryption mechanism of signaling data messages in the protocol shall comply with the requirements of Chapter 7 of JT/T 808- 2019. 6.3 The real-time audio and video transmission channel agreement in the protocol shall meet the requirements of 4.2 in JT/T 1078-2016. 6.4 The audio and video signaling data message communication shall use the established link between the vehicle intelligent terminal and the dispatching center for the transmission of positioning information. No new link shall be created. A new link shall be created for the communication of audio and video code stream data message, instead of the link for transmitting the positioning information. 6.5 The message definition in the protocol shall meet the requirements of Annex A.

7 Data format

7.1 Basic data 7.1.1 General response from terminal The data format of the general response message body of the terminal shall comply with the provisions in 8.1 of JT/T 808-2019. 7.1.2 General response from dispatching center The data format of the general response message body of the dispatching center shall comply with the provisions in 8.2 of JT/T 808-2019. 7.1.3 Terminal heartbeat The data format of the terminal heartbeat message body shall comply with the provisions in 8.3 of JT/T 808-2019. 7.1.4 Query server time request The data format of the query server time request message body shall comply with the provisions in 8.4 of JT/T 808-2019. 7.1.5 Query server time response The data format of the query server time response message body shall comply with the provisions in 8.5 of JT/T 808-2019. 7.1.6 Server retransmission subpackage request The data format of the message body of the server's retransmission subpackage request shall comply with the provisions of 8.6 of JT/T 808-2019. 7.1.7 Terminal retransmission subpackage request The data format of the message body of the terminal retransmission subpackage request shall comply with the provisions in 8.7 of JT/T 808-2019. 7.1.8 Terminal registration The data format of the terminal registration message body shall comply with the provisions in 8.8 of JT/T 808-2019. 7.1.9 Terminal registration response The data format of the terminal registration response message body shall comply with the provisions in 8.9 of JT/T 808-2019. 7.1.10 Terminal logout The data format of the terminal logout message body shall comply with the provisions in 8.10 of JT/T 808-2019. 7.1.11 Terminal authentication The data format of the terminal authentication message body shall comply with the provisions of 8.11 in JT/T 808-2019. 7.1.12 Setting terminal parameters The data format of the message body for setting terminal parameters shall comply with the provisions in 8.12 of JT/T 808-2019. 7.1.13 Query terminal parameters The data format of the query terminal parameter message body shall comply with the provisions of 8.13 in JT/T 808-2019. 7.1.14 Query specified terminal parameters The data format of the message body for querying the specified terminal parameters shall comply with the provisions in 8.14 of JT/T 808-2019. 7.1.15 Query terminal parameter response The data format of the query terminal parameter response message body shall comply with the provisions in 8.15 of JT/T 808-2019. 7.1.16 Terminal control ......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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