载波聚合技术可以整合零散频谱提供更高的峰值速率，是LTE-A演进的关键技术，为运营商网络部署提供了灵活性，同时频谱资源的差异性也带来了部署方案的多样性，需要运营商根据自身条件制定演进策略和部署方案。从中国联通网络现状入手，对LTE载波聚合的演进方案进行分析，提出演进策略和部署方案建议，根据网络技术的发展趋势提出了LTE载波聚合后续的演进路标建议。%Carrier aggregation is the key technology of LTE-A evolution,can aggregate fragmented spectrum and provide higher peak rate. Although carrier aggregation can improve the flexibility of the operator’s network,meanwhile the spectrum difference al-so brings diversity of deployment scenarios. So operators must custom their network solutions according to their own network conditions. Based on China Unicom’s network status,it analyzes the evolution of LTE carrier aggregation solution,proposes the evolution strategy and deployment recommendations,and provides the evolution roadmap proposals of LTE carrier aggre-gation according to the network technology development trends.
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