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This standard is one of the technical standards of LTE-based vehicular communication, of which, the composition and titles are as follows:
a) YD/T 3400-2018 General technical requirements of LTE-based vehicular communication;
b) YD/T 3340-2018 Technical requirements of air interface of LTE-based vehicular;
c) YD/T 3707-2020 Technical requirements of network layer of LTE-based vehicular communication;
d) YD/T 3709-2020 Technical requirements of message layer of LTE-based vehicular;
e) YD/T 3708-2020 Test methods of network layer of LTE-based vehicular communication;
f) YD/T 3710-2020 Test methods of message layer of LTE-based vehicular communication.
This standard is prepared in accordance with the rules given in GB/T 1.1-2009.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The issuing body of this standard shall not be held responsible for identifying any or all such patent rights.
This standard was proposed by and is under the jurisdiction of China Communications Standards Association.
Test methods of network layer of LTE-based vehicular communication
1 Scope
This standard specifies the test methods of network layer of LTE-based vehicular communication, and regulates the test parameters and indexes, test methods and test cases of network layer of LTE-based vehicular communication.
This standard is applicable to network layer of LTE-based vehicular communication.
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 documents (including any amendments) applies.
YD/T 3340-2018 Technical requirements of air interface of LTE-based vehicular
YD/T 3400-2018 General technical requirements of LTE-based vehicular communication
YD/T 3707-2020 Technical requirements of network layer of LTE-based vehicular communication
3 Abbreviations
For the purposes of this document, the following abbreviations apply.
AID Application ID
DUT Device Under Test
DME Dedicated Management Entity
DSM Dedicated Short Message
DSMP Dedicated Short Message Protocol
LLC Logical Link Control
LTE Long Term Evolution
LTE-V2X LTE Vehicle to Everything
MIB Management Information Base
MAC Media Access Control
OBU On Board Unit
RSU Road Side Unit
SAP Service Access Point
TS Test System
TTCN-3 Testing and Test Control Notation-3
TCP Transmission Control Protocol
UDP User Datagram Protocol
4 Test environment of network layer of LTE-based vehicular communication
4.1 Test system architecture
See Figure 1 for the test system architecture of LTE-based vehicular communication. The test system is mainly composed of PC host and system simulator, which communicate with each other through Ethernet.
PC host is the upper computer in the test system, which realizes equipment operation, system self-inspection and TTCN-3 executable test case operation, and can realize automatic test and control of the terminal under test through relevant command interfaces.
The system simulator realizes the underlying protocol stack function of LTE-based vehicular communication technology, and the system simulator communicates with the terminal through air interface.
If the test system needs DUT to feed back the relevant test status or result information during the test process, DUT feeds back the relevant information through Ethernet.
Note: DUT test can be either OBU or RSU.
Figure 1 Test system architecture
4.2 Test conventions
The test cases and scenarios involved in this standard shall follow the following conventions:
? Each test case tests only one wireless device under test at a time, and can’t test multiple wireless devices at the same time;
? Unless otherwise specified, the “DSM message” mentioned in this standard refers to DSM message whose packet type is “Non-IP” and does not contain “DSMP Extension Domain Indicator” (i.e., the value is taken as 0);
? Unless otherwise specified, the DSM message length (DsmMaxLength) value in MIB is 1400 bytes;
? The related contents of DSA test of LTE-based vehicular communication technology are not within the definition scope of this standard;
? Except for special instructions, the specific test operations for test cases involved in this standard are conducted according to those shown in Figure 2.
Foreword i
1 Scope
2 Normative references
3 Abbreviations
4 Test environment of network layer of LTE-based vehicular communication
4.1 Test system architecture
4.2 Test conventions
5 Test of DSM message
5.1 Test of DUT sending DSM message
5.2 Test of DUT receiving DSM message
6 Test of application registration
6.1 Test of higher layer application registration
7 Test of MIB maintenance
7.1 Test of DSM message length
基于LTE的車聯網無線通信技術
網絡層測試方法
Test methods of network layer of LTE-based vehicular communication
2020-04-16發布 2020-07-01實施
中華人民共和國工業和信息化部 發布
前言
本標準是基于LTE的車聯網無線通信技術系列標準之一，該系列標準的結構和名稱預計如下：
a) YD/T 3400—2018《基于LTE的車聯網無線通信技術 總體技術要求》；
b) YD/T 3340—2018《基于LTE的車聯網無線通信技術 空中接口技術要求》；
c) YD/T 3707—2020《基于LTE的車聯網無線通信技術 網絡層技術要求》；
d) YD/T 3709—2020《基于LTE的車聯網無線通信技術 消息層技術要求》；
e) YD/T 3708—2020《基于LTE的車聯網無線通信技術 網絡層測試方法》；
f) YD/T 3710—2020《基于LTE的車聯網無線通信技術 消息層測試方法》。
本標準按照GB/T 1.1—2009給出的規則起草。
請注意本文件的某些內容可能涉及專利。本文件的發布機構不承擔識別這些專利的責任。
本標準由中國通信標準化協會提出并歸口。
基于LTE的車聯網無線通信技術 網絡層測試方法
1 范圍
本標準規定了基于LTE的車聯網無線通信技術網絡層測試方法，對基于LTE的車聯網無線通信技術網絡層的測試參數與指標、測試方法、測試用例進行了規范。
本標準適用于基于LTE的車聯網無線通信技術的網絡層。
2 規范性引用文件
下列文件對于本文件的應用是必不可少的。凡是注日期的引用文件，僅所注日期的版本適用于本文件。凡是不注日期的引用文件，其最新版本(包括所有的修改單)適用于本文件。
YD/T 3340—2018 基于LTE的車聯網無線通信技術空中接口技術要求
YD/T 3400—2018 基于LTE的車聯網無線通信技術總體技術要求
YD/T 3707—2020 基于LTE的車聯網無線通信技術網絡層技術要求
3 縮略語
下列縮略語適用于本文件。
AID 應用標識 Application ID
DUT 被測實體 Device Under Test
DME 專用管理實體 Dedicated Management Entity
DSM 專用短消息 Dedicated Short Message
DSMP 專用短消息協議 Dedicated Short Message Protocol
LLC 邏輯鏈路控制 Logical Link Control
LTE 長期演進技術 Long Term Evolution
LTE-V2X 基于LTE的車用無線通信技術 LTE Vehicle to Everything
MIB 管理信息庫 Management Information Base
MAC 媒體控制協議 Media Access Control
OBU 車載單元 On Board Unit
RSU 路側單元 Road Side Unit
SAP 服務接入點 Service Access Point
TS 測試系統 Test System
TTCN-3 測試與測試控制第三版 Testing and Test Control Notation-3
TCP 傳輸控制協議 Transmission Control Protocol
UDP 用戶數據報協議 User Datagram Protocol
4 LTE車聯網無線通信技術網絡層檢測環境
4.1 測試系統架構
基于LTE的車聯網無線通信測試系統架構如圖1所示。測試系統主要由PC主機和系統模擬器兩個部分組成，二者通過以太網進行通信。
PC主機是測試系統中的上位機，實現設備運行、系統自檢以及TTCN-3可執行測試用例的運行，并且可通過相關命令接口對被測終端實現自動化測試及控制。
系統模擬器實現基于LTE的車聯網無線通信技術的底層協議棧功能，系統模擬器與終端之間通過空口進行通信。
測試系統如需被測實體反饋測試過程中相關測試狀態或測試結果信息，被測實體通過以太網反饋相關信息。
測試系統(TS)
PC主機
系統模擬器
測試控制、測試日志
TTCN-3代碼
編解碼器
系統適配器(SA)
平臺適配器(PA)
系統接口
底層協議
棧實體
LAN連接
V2X空口
被測實體(DUT)
測試控制/測試結果反饋
注：被測實體可以是OBU或者RSU中任何一種。
圖1 測試系統架構
4.2 測試約定
本標準中涉及的測試用例及場景需遵循如下約定：
· 每個測試用例僅一次測試一臺待測無線設備，不支持同時測試多臺無線設備；
· 本標準中提及的“DSM消息”除特殊說明外，均指數據包類型為“Non-IP”的不包含“DSMP擴展域指示”(即DSMP Extension Indicator取值為0)的DSM消息；
· 本標準中除特殊說明外，MIB中DSM消息長度(DsmMaxLength)值為1400字節；
· 基于LTE的車聯網無線通信技術專用業務公告(DSA)測試相關內容不在本標準定義范圍內；
· 本標準中涉及的測試用例除特殊說明外均采取圖2所示內容實施具體測試工作。
