Network timing architecture and method

Abstract

The present application discloses a network timing architecture, which is applied to a small cell base station network adopting an IEEE 1588 protocol. The network timing architecture comprises a GPS antenna, BC nodes and / or TC nodes, and communication terminals. The GPS antenna is used for acquiring a reference time signal. The BC nodes and / or TC nodes are used for acquiring a time signal of the GPS antenna, and performing error correction on the time signal by using a timestamp flag and a timestamp error correction mechanism. The communication terminals are used for receiving the time signalafter error correction. The network timing architecture combines the IEEE 1588 protocol, the BC nodes, and the TC nodes, and applies the network timing architecture to the small cell base station network with high synchronization requirements, which not only realizes precision time service in the small cell base station network, but also reduces the cost and the complexity of hardware required formaintaining the precision time service.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a network timing framework and method. Background technique [0002] Currently, service providers plan to increase the capacity and coverage of 4G / LTE networks by deploying micro / pico / picocell base stations in order to expand the coverage of 4G / LTE networks in dense and complex urban environments, or to provide reliable building internal service. [0003] Similar to macro base stations, these base stations require two indicators of frequency and phase, or precise time and time synchronization. 4G / LTE cellular technology has more stringent requirements for such time and frequency. [0004] The GPS signal traditionally used to provide the frequency and timing signals required by the 4G / LTE network is difficult to provide accurate timing on the backhaul network based on packet data technology of the cellular system; and 4G / LTE cellular technology is often used indoors and in c...

AI Technical Summary

Problems solved by technology

[0004] The GPS signal traditionally used to provide the frequency and timing signals required by the 4G / LTE network is difficult to provide accurate timing on the backhaul network of the cellular system based on packet data technology; and 4G / LTE cellular technology is often used indoors and in crowded cities , the availability of GPS signals has also become a problem to be solved

For the common microwave links and complex topologies of small cell backhaul networks, how to meet the stringent time-frequency requirements has become a technical and cost challenge for those skilled in the art.

Images