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）︰2012/01/14 考试时限（分钟）：14:20~17:20 是否需发放奖励金：是 （如未明确表示，则不予发放） 试题 : Potential Questions: 1.Please draw the EPS(Evolved Packet System)architecture including Long Term Evolution(i.e.,E-UTRAM) and system Architecture Evolution(i.e.,EPC). Note that in this figure,you need to specify the EUTRAN(e-NB),UTRAN,GERAN, Non 3GPP IP access ,MME,Serving Gateway,HSS,PDN Gateway,SGSN and the interfaces between each node. 2.(a)Please describe the MM(Mobility Management)context,PDP(Packet Data protocol)context and Qos (Quality of service) Profile. (b) Please depict the relationship between MM context ,PDP context,and Qos profile. 3. Please illustrate two concepts for GPRS channel management. 4. Please depict the message flow for the combined RA/LA update procedure in GPRS. 5. What are the charging information stored in SGSN and GGSN,respectively. 6. Please use the RNC terminology to illustrate the serving RNC,drift RNC , and controlling RNC. 7. Please depict the virtual Home Environment(VHE). 8. Please depict the Service Architecture Concept(Open Service Architecture;OSA) int the UMTS system. 9. Olease use the following example to explain how to use the Exclusive OR function (X-OR) to generate the Transmitted Signal and Retrieved Data using Orthogonal Variable Spreading Factor(OVSF) codes in WCDMA. Data ──────────────────────── │ 0 │ 1 │ 0 │ 1 │ ┐ ──────────────────────── │ │ │ Spreading Code │ │ ──────────────────────── │ │0│1│0│1│0│1│0│1│0│1│0│1│0│1│0│1│ │ ──────────────────────── │ ∥ X-or │ │ │ ╲／ chip period │ (0.26us) │Spreading Transmitted │ │ Signal │ ┐ ┘ │ │ │ Spreading │ │ Code(Time Aligned) │ ∥ │De-spreading ╲／ │ │ Retrieved │ │ Data │ ┘ 10. Please depict the OVSF code tree to generate the OVSF codes with SF=8. ── ──0000 ┤ │ ── ── 00 ─┤ │ │ ── │ ──0011 ┤ │ ── 0 ┤ ── │ ──0101 ┤ │ │ ── ──01 ── │ ── ──0110 ┤ ── SF=1 SF=2 SF=4 SF=8 11. Please make a table to compare the areas controlled by MSC/VLR,SGSN, and UTRAN for the GSM,GPRS ,and UMTS systems. ────────────────────────────────────── │ │ MSC/VLR │ SGSN │ UTRAN │ ────────────────────────────────────── │ │ GSM │ GPRS │ UMTS │ GPRS │ UMTS │ UMTS │ ────────────────────────────────────── │Cell │ │ │ │ │ │ │ │────────────────────────────────────── │URA │ │ │ │ │ │ │ │────────────────────────────────────── │RA │ │ │ │ │ │ │ ────────────────────────────────────── │LA │ │ │ │ │ │ │ ────────────────────────────────────── 12. Please depict the MM state machine maintained in MS(Mobile Station) for GPRS and UMTS. 13. Please depict the evolution path for Cellular Packet Data Service. --

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