3GPP介绍及文档导读
0 背景
在平时的电信协议和业务的研究过程中,标准看的非常多。在查阅3GPP相关标准时会对其浩瀚的文档结构及编号产生恐惧感。本章将为您讲述如何去查找3GPP文档以及如何读懂其特有的文档编号。
1 3GPP组织介绍
3GPP的全称是3rd Generation Partnership Project,中文翻译为第三代合作伙伴计划。它是领先的3G技术规范机构,是由欧洲的ETSI,日本的ARIB和TTC,韩国的TTA以及美国的T1在1998年底发起成立的,旨在研究制定并推广基于演进的GSM核心网络的3G标准,即WCDMA,TD-SCDMA,EDGE等。中国无线通信标准组(CWTS)于1999年加入3GPP。3GPP的目标是实现由2G网络到3G网络的平滑过渡,保证未来技术的后向兼容性,支持轻松建网及系统间的漫游和兼容性。
3GPP最初的工作范围是为第三代移动系统制定全球适用技术规范和技术报告。第三代移动系统基于的是发展的GSM核心网络和他们所支持的无线接入技术。随后3GPP的工作范围得到了改进,包括为移动通信(GSM)技术规范和技术报告包括发展的无线接入技术(包括GPRS和EDGE)维护和制定全球系统。
3GPP由项目协调组(PCG)和技术规范组(TSGs)组成,如需要,各技术规范组可建立工作组。如下图示为3GPP的组织结构图:

关于3GPP组织更多的信息您可以访问http://www.3gpp.org/About/about.htm
2 规范导读及文档命名规则
我们在查阅3GPP文档时,在文档的最上方都会见到类似于3GPP TS 23.140 V6.15.0 (2008-03)这样的字符串,他们有什么特别的意思吗?
我们首先要理解,3GPP的文档分为TR和TS两种,分别对应Technical Reports(技术报告)和Technical Specification(技术规范)。
其次,3GPP的文档针对不同的领域分为了不同的系列(series),下表对这些系列对应的领域进行了划分:
Subject of specification series |
3G/GSM R99 and later |
GSM only (Rel-4 and later) |
GSM only (before Rel-4) |
| General information (long defunct) | 00 series | ||
| Requirements | 21 series | 41 series | 01 series |
| Service aspects ("stage 1") | 22 series | 42 series | 02 series |
| Technical realization ("stage 2") | 23 series | 43 series | 03 series |
| Signalling protocols ("stage 3") - user equipment to network | 24 series | 44 series | 04 series |
| Radio aspects | 25 series | 45 series | 05 series |
| CODECs | 26 series | 46 series | 06 series |
| Data | 27 series | 47 series (none exists) | 07 series |
| Signalling protocols ("stage 3") -(RSS-CN) | 28 series | 48 series | 08 series |
| Signalling protocols ("stage 3") - intra-fixed-network | 29 series | 49 series | 09 series |
| Programme management | 30 series | 50 series | 10 series |
| Subscriber Identity Module (SIM / USIM), IC Cards. Test specs. | 31 series | 51 series | 11 series |
| OAM&P and Charging | 32 series | 52 series | 12 series |
| Access requirements and test specifications | 13 series (1) | 13 series (1) | |
| Security aspects | 33 series | (2) | (2) |
| UE and (U)SIM test specifications | 34 series | (2) | 11 series |
| Security algorithms (3) | 35 series | 55 series | (4) |
| Evolved UTRA aspects | 36 series | - | - |
|
Note (1): The 13 series GSM specifications relate to European-Union-specific regulatory standards. On the closure of ETSI TC SMG, responsibility for these specifications was transferred to ETSI TC MSG, (Mobile Specification Group) and they do not appear on the 3GPP file server. Note (2): The specifications of these aspects are spread throughout several series. Note (3): Algorithms may be subject to export licensing conditions. See the relevant 3GPP page. See also the relevant ETSI pages. Note (4): The original GSM algorithms are not published and are controlled by the GSM Association. |
|||
可以看到,我们举例的23.140其实对应23系列,也就是针对3G/GSM R99以后的Technical realization ("stage 2")。从上表也可以看出,文档中有Stage 1,2,3之分。Stage 1规范了从服务使用者的角度阐述的一个服务;Stage 2规范描述了对需要解决的问题的逻辑分析;Stage 3就是技术实现。
在大的版本后面又有小编号,就是示例中的140,我们进入到http://www.3gpp.org/ftp/Specs/html-info/23-series.htm看到文中有一个大表格,纤细的列出了不同的小编号对应的功能描述。140对应的就是"Multimedia Messaging Service (MMS); Functional description; Stage 2”。
后面的V6.15.0表示修改的版本号。

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