Design And Implementation Of HINOC MAC Protocol Testing System Interface

With the acceleration of triple play,the importance of HINOC(High Performance Network Over Coax)technology using the widespread network of CATV is more and more obvious.Before the devices which are based on the HINOC are in the market,there must be conformance testing,interoperability testing and performance testing to prove whether the protocol implementations are consistent with the protocol standard.In this paper we study the design and implementation of the HINOC MAC protocol testing system interfaces.At first,on the basis of the deeply understanding of HINOC MAC protocol and the theories of testing,we study the testing architecture of HINOC MAC protocol under the testing platform which is provided by the TTworkbench,design the testing control interfaces between the testing control part and the realization of HINOC protocol with testing function,realize the interfaces on the HINOC prototype based on the platform of PXA270,and verify them in this paper.In addition,in order to accurately simulate the real transmitting process of signaling frame as HINOC device,adaptive modulation modes calculation module is designed in the testing system interfaces,the calculation method of the modulation modes is put forward and put it into realization.The testing system interfaces in this paper have been integrated into the test prototype system,and the tests are completed.The results show the correctness and stability of the designed module.