MN切换时非优化的SN变化(不变化)流程导致的性能下降问题与解决方案

1、MN 切换时非优化的 SN 变化（不变化）流程导致的性能下降问题与解决方案案例上报省份：广东省案例上报人：吴宝栋一、关键词：MN 切换时，SN 变化（不变化）流程二、案例分类软件功能配置，4/5G 协同锚点与切换流程三、优化背景2019 年面向 5G 试商用的建设工作已逐步开展，为推进 5G 支撑手段、优化措施加速落地，全面评估 4/5G 协同组网性能、促进 5G 网络性能评估体系建立，集团公司网络部计划于 4-5 月在杭州和广州组织面向 5G 优化、组网、网管的现场测试工。四、问题现象LTE 切换时，SN 中断时延较长。ENB 触发 SN 释放，LTE 切换完成后，重新配置 B1 测量，B1

2、 事件触发后，再次添加 SN。五、原因分析NSA 组网结构下，ENB 触发 SN 释放，LTE 切换完成后，重新配置B1 测量，B1 事件触发后，再次添加 SN,具体流程如下:根据以上流程，SN 数据传送中断时延（不考虑其他无线因素）约为 750ms,时延主要贡献在 B1 测量/事件触发。sourceMNfi.UEContaxt1.HandoverRoquest2.HandoverFteqircAtkncrtMcdgc0.LTEA5R?pcrt-(inclucliii4ServingNR*iMtNR工SNBRaqg贰.4.SgNBRcleasGReustAcknowl&JlgoXRRC

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