特定模型下FDD900扩频策略的研究

Research on spread spectrum strategy of FDD900 under specific model

自中国移动引入FDD900网络以来,农村区域LTE覆盖问题获得极大改善,但随业务量增长,随之而来的容量不足问题也日益突出,由于FDD900带宽仅5MHz,用户速率相对较差,而GSM网络依然承载全网30%以上语音业务的背景下,GSM900网络短期内也无法完全退网,文章通过阐述GSM00频率重耕、FDD900扩频方案,为今后FDD900带宽扩展工作提供一些借鉴和参考。

Since The introduction of FDD900 network by China Mobile,LTE coverage in rural areas has been greatly improved.However,with the growth of business volume,the problem of insufficient capacity has become increasingly prominent.As the bandwidth of FDD900 is only 5MHz,the user rate is relatively poor,while GSM network still carries more than 30%of the voice services of the whole network,GSM900 network can not be completely off the network in a short time,this paper expounds GSM00 frequency refarming,FDD900 spread spectrum scheme,for the future FDD900 bandwidth expansion work to provide some reference.