在 LTE 部署时，基站可以通过 GPS 或者北斗获取同步信号，同时承

When deploying LTE, the base station can obtain synchronization signals through GPS or Beidou. At the same time, the bearer network equipment also needs to have the function of transmitting synchronization signals. Therefore, the devices at the access layer, convergence layer, and core layer are required to support the 1588v2 protocol and Ethernet synchronization function. <br>CDMA is called code division multiple access. Each user and each sector are distinguished by different phases of the code sequence. The code sequence has a delay in transmission. The receiver needs to compensate for the delay, so we must establish a The synchronization system synchronizes the code sequences generated by the receiving and transmitting ends. There must be high-precision time synchronization in the CDMA system to coordinate the work of all base stations throughout the network. FDD LTE does not have time synchronization requirements, but if multicast multicast services are deployed, time synchronization is also required

In LTE deployment, the base station can obtain synchronization signals via GPS or Beidou, while the carrier network device also needs to have the ability to transmit synchronous signals, so the access layer, aggregation layer, core layer of the device requires support 1588v2 protocol and Ethetsync function.<br>CDMA is called code division multi-access, each user and each sector is to distinguish with the different phases of the code sequence, code sequence in the transmission of the delay, the receiving end needs to compensate for the delay, so to establish a synchronization system, so that the receiving, hair-generated code sequence synchronization. The CDMA system must have high-precision time synchronization to coordinate the work of all base stations across the network. FDD LTE, which does not have time to synchronize itself, but also needs time synchronization if multicast multicast service is deployed

In LTE deployment, the base station can obtain synchronization signals through GPS or Beidou, and the carrier network equipment also needs to have the function of transmitting synchronization signals. Therefore, the equipment in access layer, convergence layer and core layer are required to support 1588v2 protocol and Ethernet synchronization function.<br>CDMA is called code division multiple access (CDMA). Each user and each sector are distinguished by different phases of the code sequence. The code sequence has delay in transmission, and the receiver needs to compensate for the delay. Therefore, a synchronization system should be established to synchronize the code sequence generated by the receiver and the transmitter. CDMA system must have high-precision time synchronization to coordinate the work of all base stations in the whole network. FDD LTE has no time synchronization requirements, but it also needs time synchronization if multicast service is deployed<br>