Abstract: LTE based broadband trunking communication system serves the dedicated network markets. Firstly, this paper introduces the composition of the broadband trunking communication system, the location of the core network equipment in the network, the network entity included and the function of each entity. Then the design of test cases is introduced in detail, including the test methods theory, broadband data test cases and trunking test cased. The paper emphasized on the test cases analysis from the aspects of packet services, trunking services, trunking functions, packets and trunking concurrent services. In addition, the research of test cases from the perspective of eHSS device functions and operation and maintenance. The standard development of LTE based broadband trunking communication system has gone through two stages. In the first stage, the system equipment is a whole, and in the second stage the system equipment is divided into core network equipment and base station equipment, which means that the core network equipment of different vendors are able to interoperate. The test method introduced in this paper is a standard in the second stage standard system of broadband trunked communication system basedonLTE.

Key words: LTE, B-TrunC, core network, testmethod