GPS Time Server in the Business of Wireless Communications

With the development and deepening of 3G network business and the open era of LTE, the time synchronization problem of wireless mobile services highlights continuously. In the past, mobile networks, all time synchronization are a by way of base stations of direct external GPS Receiver, through the GPS receiver receives time information from GPS system to achieve time synchronization of all base stations. Most of the current 3G network adopts this way to resolve the base station time synchronization problem, but this approach has exposed some of the more serious problems, such as: large-scale construction of 3G base stations need a lot of GPS receiver, a direct result of the high cost of network construction; to meet the clearance requirement of 120 degrees for GPS receiver antenna, which bringing about of the difficulty of GPS antenna installation, especially indoor coverage station located is difficulties; GPS resources controlled by others, there is a security risks of using resource. Therefore, we consider the ground of time synchronization system instead, by the way of the time synchronization protocol to provide accurate time synchronization for wireless. Currently, only IEEE1588v2 is able to provide sub-microsecond time synchronization protocol. Presently, for multi-service bearer of wireless mobile IP technology, there is need to a bearer technology to meet packet service and multi-service, to provide carrier-class OAM, high QoS, precise synchronization, full-compatible and conservation programs, which can be used to build intelligent network platform and other requirements of the bearer technology. Only PTN can fully meet these requirements, PTN is the best wireless mobile IP based multi-service bearing technology undoubtedly. Therefore, the introduction of PTN network to carry mobile business. Move 1588v2 technology to the PTN network, it will refer to the reference clock, such as GPS Receiver, on the move to RNC side, just need to take advantage of the RNC side to set the main backup GPS receiver, which is full use of sub-microsecond accuracy 1588v2 to transmit to each side of the base station to achieve RNC synchronization time distribution. Not only can reduce system costs, but also greatly reduces the difficulty of installation and maintenance, mature post-BD systems can easily switch to the compass system of the GPS completion time of resource security system upgrades from wireless timing system. As a local network, time synchronization is not recommended for hierarchical network, hierarchical configuration will be a substantial increase in complexity. In the time synchronization network, the time source is divided into different priorities, time source access point settings in the core layer, the synchronization node 1588 as far as possible to configure multiple interfaces in order to increase the reliability of node synchronization. Time source as the center in the network, time synchronization link as short as possible, as far as possible the protection path planning. Deploy two time synchronization network time server can obtain time of the downstream main and backup. General recommended the deployment of a core layer of a preparation of the two main time server. Are you looking for the GPS receiver now? ePathChina Online Shop supplies many kinds Wholesale GPS Receiver. You can hunt good and durable ones for your gadgets from our store.