CDMA/EVDO协议基础知识汇总
文章目录
框图
CDMA2000实体
| 缩略 | 描述 |
|---|---|
| AC | Authentication Center |
| AAA | Authentication, Authorization and Accounting Server |
| AN | Access Network |
| AT | Access Terminal |
| BS | Base Station |
| BSC | Base Station Controller |
| BTS | Base Transceiver System |
| FA | Foreign Agent |
| HA | Home Agent |
| HLR | Home Location Register |
| IWF | Interworking Function |
| MS | Mobile Station |
| MSC | Mobile Switching Center |
| PCF | Packet Control Function |
| PDSN | Packet Data Serving Node |
| PLMN | Public Land Mobile Network |
| PSTN | Public Switched Telephone Network |
| VLR | Visitor Location Register |
物理层接口
The A1, A2, A3, A5 and A7 interfaces are based on the use of:
- T1 digital transmission system interfaces. Each 1.544 Mbps
interface provides 2456 or 2464 Kbps channels, which
can be used for traffic or signaling as operator requires.
2 E1 digital transmission interfaces consisting of 30*64
Kbps user channels can also be used for traffic or signaling.
As the operator requires, and as applicable to the network.
As a BS/MSC agreed option, dedicated DSO signaling
link(s) may be used instead of the T1/E1 interface.
3 T3 digital transmission interfaces supporting transmission
rates of 43.232 Mbps.
4 OC3 digital transmission interfaces supporting
transmission rates of 155.52 Mbps.
The A8 to A15 interfaces are based on the use of the Internet
Protocol, which can operate across various physical layer media
(generally, Ethernet Fast LAN or GbE).