【单选题】
VoLTE业务由（ ）提供会话控制和业务逻辑
A. MME
B. ENB
C. EPC
D. IMS
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答案
D
解析
暂无解析
相关试题
【单选题】
室分2PATH 20M 带宽TD-LTE 每PATH 10W发射,并PA=-3, PB=1则CRS_EPRE为（ ）。
A. 15.2dBm
B. 13dBm
C. 12.2dBm
D. 9.2dBm
【单选题】
TTI bundling也称为子帧捆绑，是LTE系统中一种特殊的调度方式，它是针对处于小区边缘的VoIP用户而设计的。TTI bundling仅用于( )。
A. 需要看带宽配置
B. 上下行均可
C. 下行
D. 上行
【单选题】
以下PCI规划原则中哪一个是不对的？（ ）
A. 同频邻小区PCI无需考虑MOD3或MOD6的限制，任意分配即可
B. 邻小区CRS尽量在频域上分开
C. 相邻的两个小区PCI不能相同
D. 同一个小区的所有邻区中不能有相同的PCI
【单选题】
主叫信令流程主要分为以下几个阶段，请按照其发生的先后顺序进行排序①建立RAB连接②鉴权③建立RRC连接④通过直传消息建立到CN的信令⑤释放。( )
A. ③①④②⑤
B. ③④②①⑤
C. ③①②④⑤
D. ①②③④⑤
【单选题】
RRC连接建立时，控制面组建RrcConnectionSetup消息发给UE，正常情况下UE将回复什么消息？( )
A. SetupRequestMsg
B. DrmServiceResqult；
C. RrcConnectionSetupComplete；
D. RrcConnectionComplete；
【单选题】
关于RRC建立成功率描述错误的是（ ）
A. 与业务无关的RRC连接建立是衡量呼叫接通率的一个重要指标，与业务相关的RRC连接建立可用于考察系统负荷情况
B. RRC连接建立可以分两种情况：一种是与业务相关的RRC连接建立；另一种是与业务无关（如紧急呼叫、系统间小区重选、注册等）的RRC连接建立
C. RRC连接建立成功意味着UE与网络建立了信令连接
D. 反映eNB或者小区的UE接纳能力
【单选题】
下列选项中关于beam report描述有误的是：（ ）
A. UE可以通过SSB进行beam测量上报
B. 可以将beam分组，以组的形式上报
C. UE通过RRC信令上报beam测量结果
D. 网络配置CSI-RS资源和上报方式
【单选题】
LTE FDD与WLAN共室分系统组网时，需保证合路器的隔离度在（ ）dB以上，或采用WLAN末端合路方式，通过分布系统间的损耗进行干扰规避。
A. 68
B. 88
C. 64
D. 84
【单选题】
UE进行attach应该使用Initial UE发送，如果使用UDT形式发送，网络侧会（ ）
A. 释放当前的S1连接
B. 不做处理
C. 发出attach reject拒绝UE进行attch
D. 继续处理attach流程
【单选题】
路测数据上显示的邻小区频点扰码信息是（ ）
A. 是网管配置的小区信息，通过系统消息下发给终端
B. 以上都不是
C. 路测设备可以搜索到的所有邻小区信息
D. 是导入的基站信息表里的小区信息
【单选题】
对KPI指标中S1接口流量描述不正确：( )。
A. 反映S1接口的系统负荷情况
B. S1接口流量指的是物理层流量
C. S1接口流量指的是IP层流量
D. S1接口流量可分为S1接口上行流量和S1接口下行流量
【单选题】
LTE覆盖指标RS信号SINR的定义和解读，下列选项错误的是：( )。
A. RS-SINR与网络负荷相关，负荷越高RS-SINR值越低
B. 邻区和服务小区的PCI模3不等，那么它们的RS就在频域上不重叠
C. 一般将SINR中的S也认为是有用信号功率，则SINR等效于CINR
D. RSSINR是信号能量除以噪声的能量的比值
【单选题】
LTE中，事件触发测量报告中，事件A3的定义为（ ）。
A. 邻区优于本小区，并超过偏置值
B. 本小区低于门限值，且邻小区优于门限值
C. 本小区优于门限值
D. 邻区优于门限值
【单选题】
LTE上行链路并不采用与下行一样的OFDMA多址接入方式，主要出于什么考虑( )。
A. 容易实现
B. 克服多普勒频移带来的影响
C. 克服多载波幅度叠加形成的巨大功率波动
D. 增加功耗
【单选题】
当attach成功，建立一个专用承载后，如果RRC连接释放进入了IDLE，下次UE发起数据时会发起（ ）
A. 寻呼
B. detach
C. Attach
D. service request
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【单选题】
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【单选题】
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A. Red .
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【单选题】
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A. Walking under a ladder .
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【单选题】
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【单选题】
Q4: According to the passage, what will bring people good luck?___
A. Breaking a mirror on purpose .
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【单选题】
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【单选题】
Q3: According to the woman, in what way will the new high-speed train be a big help to her?___
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【单选题】
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【单选题】
Q1: How much time on average do Americans spend on their way to work?___
A. About an hour .
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C. About half an hour .
D. More than one and a half hours .
【单选题】
Q2: What is the present situation about Americans’ commuting to work?___
A. More and more Americans spend over an hour getting to work .
B. Over 10 percent of Americans spend less than an hour getting to work .
C. Only New York people spend more than 90 minutes getting to work .
D. Over 10 percent of Americans spend more than 90 minutes getting to work .
【单选题】
Q3: Why does Steven choose to have an extreme commute?___
A. Because gas prices are not high .
B. Because the commute is not tiring .
C. Because he can attend a better school .
D. Because he can have his favorite lifestyle .
