Huawei and Siemens have successfully completed and passed the interoperability testing of communication-based train control (CBTC) over long-term evolution (LTE) joint solution.

During the testing, which was carried out in France, several types of services including CBTC, passenger information system (PIS) and closed circuit television (CCTV) were carried out using LTE.

LTE allows multiple types of train control services to be carried out with one radio technology and meets the requirements of safe operation, agile dispatch and convenient transport.

It is noted the testing significantly accelerates progress towards a commercial rollout of CBTC over LTE services.

As a train-to-ground communication bearer technology for CBTC services, LTE offers various advantages against other options, such as large data bandwidth, high-speed mobility, quality of service (QoS) assurance for multiple services, and anti-interference performance.

It is reported that while ensuring reliable transmission of mission-critical CBTC services, LTE can fully meet transmission requirements of several other services, such as onboard CCTV and PIS.

"LTE allows multiple types of train control services to be carried out with one radio technology."

Huawei and Siemens started their collaboration in March last year. In June, the companies set up a joint project plan and a project team defining solution architecture and feasibility of testing in France.

In November, with technical guidance and onsite support from Huawei, Siemens France successfully completed a large number of laboratory tests, where CBTC, PIS and CCTV services were successfully carried over an integrated Airlink LTE solution.

In order to meet the requirements of railway customers and passengers for safe operation, agile dispatch, and convenient transport, Huawei developed the urban rail LTE-M solution based on 3GPP standards.

This solution provides a secure, reliable, open and stable wireless platform for urban rail train-to-ground communication.

In addition to carrying out critical service CBTC to ensure safe train operation, this platform provides trunking voice dispatch and broadband data services, such as real-time PIS and CCTV, to allow refined operation of urban rail services.

This new solution has been verified at Metro Line One in Zhengzhou, China, and the Addis Ababa Light Rail in Ethiopia.