wcdma_frequecy_control.zip - WCDMA功率规划
学习完本课程,您将能够:
了解下行信道功率配比的分析
了解下行信道功率参数配置,2012-05-23 22:18:28,下载3次
BFD_whitepaper.zip - BFD技术白皮书:
BFD是一个简单的“Hello”协议,在很多方面,它与那些著名的路由协议的邻居检测
BFD技术白皮书部分相似。一对系统在它们之间的所建立会话的通道上周期性的发送检测报文,如果某个系统在足够长的时间内没有收到对端的检测报文,则认为在这条到相邻系统的双向通道的某个部分发生了故障。在某些条件下,为了减少负荷,系统之间的发送和接收速率需要协商。,2012-05-23 22:12:08,下载6次
lectute5_RAN_Architecture.zip - WCDMA无线接入系统架构介绍
Hierarchical Architecture
• Radio Network Subsystem
(RNS)
• UTRAN Elements:
– Radio Network Controller
– Node B (Base Station)
• One RNC controls number of
Node B’s
• Node B is only connected to
one RNC
• New interface Iur for
Macrodiversity,2012-05-23 22:06:25,下载4次
lecture7_RadioInterfaceProtcols.zip - WCDMA无线空中接口控制协议介绍
• UTRAN Radio Interface protocol architecture.
• Transport Channels, Logical Channels, Radio Bearers.
• Radio Protocols
– Medium Access Control (MAC) protocol.
– Radio Link Control (RLC) protocol.
– Packet Data Convergence (PDC) protocol.
– Broadcast/Multicast Control (BMC) protocol.
– Radio Resource Control (RRC) protocol.,2012-05-23 22:03:33,下载3次
lecture4_Intro_to_WCDMA.zip - WCDMA 无线接入系统介绍
提纲
• What is spread spectrum.
• Spreading.
• Correlation and RAKE receiver.
• Uplink and Downlink Diversity.
• WCDMA Power control.
– Closed loop.
– Open loop.
• WCDMA handovers.
– Soft handover.
– Softer handover
,2012-05-23 21:59:59,下载8次