课程名称︰个人通讯服务 课程性质︰选修 课程教师︰林风 开课学院：电资学院 开课系所︰资工所/网媒所 考试日期（年月日）︰100/11/10 考试时限（分钟）：3hr 是否需发放奖励金：是 （如未明确表示，则不予发放） 试题 : 2011 PCS Midterm Exam 14:20-17:20,November 10,2011 (Total Grade:102 points) 1.(10%)Please depict the basic PCS network architecture,and briefly describe the functionality of each network element in this architecture. 2.(9%)Please describe the following radio access technologies adopted in the PCS networks and list at least one PCS system that adopts any of these radio access technologies,respectively. (a)FDMA (b)TDMA (c)CDMA? 3.(6%) Please describe how the following duplexing technologies exercise and list at least one PCS system that adopts any of these technologies , respectively. (a)TDD (b)FDD 4.(15%) Handoff Technologies (a)Please illustrate the three handoff mechanisms : hard handoff , soft handoff , and seamless handoff. (b)Please illustrate how the three handoff detection mechanisms,MCHO, NCHO,and MAHO exercise and list an least one PCS system that adopts any of these technologies,respectively.List a table to compare the three mechanisms in respects of the mobile station complexity,network complexity,handoff speed,and load balancing capability. 5.(10%) Please use a table to compare the high-tier,low-tier,and cordless PCS systems in terms of the cell size,user speed,coverage area,handset complexity,handset power consumption,speech coding rate,and delay. 6.(12%) Please illustrate GSM Basic Location Update Procedure.(Inter-VLR movement is assumed). 7.(12%) Please illustrate GSM Basic Call Termination Procedure. 8.(16%) Please depict the flowcharts of the GSM authentication and encryption/ decryption procedures. 9.(10%) SS7(Signaling System 7) (a)Please depict the SS7 network architecture.For each network node, briefly illustrate its functionality. (b)Please depict the protocol stack of the SS7 network. 10.(2%) Please list the numbers in your final projrct team. --

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