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产品名称Product name 问题定位指导书－时延篇 产品版本Product version eRAN2.1

密级Confidentiality level 内部公开 Total 33 pages 共33页 LTE eRAN2.1问题定位指导书

拟制: Prepared by

审核: 审核: 批准: Granted by

时延篇

(仅供内部使用） For internal use only

LTE交付维护组 日期： Date 2010-09-13 LTE交付维护组

日期： Date yyyy-mm-dd 日期： Date yyyy-mm-dd

日期： Date

yyyy-mm-dd

华为技术有限公司 版权所有 侵权必究 All rights reserved

Reviewed by

Reviewed by

Huawei Technologies Co., Ltd.

Revision History Date Version Description Reviewer Author 2010-9-1 2011-2-26 V0.1 V0.2 初稿 刷新为适合于eRan2.1的版本

目 录

1 Document description ......................................................................................................................... 6 2 Principle .............................................................................................................................................. 6 2.1 信令面（控制面）时延介绍 .......................................................................................................... 6 2.1.1 初始接入时延 .......................................................................................................................... 7 2.1.2 Idle to Active时延 .................................................................................................................... 8 2.1.3 paging时延 ............................................................................................................................ 10 2.2 用户面时延介绍........................................................................................................................... 11 2.2.1 影响Ping时延的关键因素 ...................................................................................................... 11 2.2.2 Ping时延与调度 ..................................................................................................................... 13 2.2.3 Ping测试 ................................................................................................................................ 15 3 Operation Guide ............................................................................................................................... 15 3.1 控制面时延问题定位思路 ............................................................................................................ 16 3.2 接入时延的定位........................................................................................................................... 19 3.2.1 环境检查 ................................................................................................................................ 19 3.2.2 参数影响 ................................................................................................................................ 20 3.2.3 时延问题验证 ........................................................................................................................ 21 3.2.4 数据采集与分析 ..................................................................................................................... 23 3.3 用户面时延问题测试定位 ............................................................................................................ 29 3.3.1 Ping时延分段定位 ................................................................................................................. 29 3.3.2 Ethereal抓包 ......................................................................................................................... 30 3.3.3 M2000进行用户面跟踪.......................................................................................................... 31 4 Reference Information ...................................................................................................................... 33 5 Typical Cases ................................................................................................................................... 33