MSCBSC 移动通信论坛
搜索
登录注册
网络优化工程师招聘专栏 4G/LTE通信工程师最新职位列表 通信实习生/应届生招聘职位

  • 阅读:8218
  • 回复:7
哪个协议详细讲述APN格式?各位
铭哲
初级会员
鎵嬫満鍙风爜宸查獙璇


 发短消息    关注Ta 

积分 455
帖子 91
威望 9553 个
礼品券 5 个
专家指数 0
注册 2011-9-14
专业方向  移动通信
回答问题数 0
回答被采纳数 0
回答采纳率 0%
 
发表于 2015-04-13 14:42:20  只看楼主 
哪个协议可以看到详细讲解APN格式?其中PLMN到底是5位还是6位,如果UE检查PLMN字段,MNC第3位是不是该补0?如果网络没有补,UE侧会检查出错吗?

[ 本帖最后由 铭哲 于 2015-4-13 15:10 编辑 ]
扫码关注5G通信官方公众号,免费领取以下5G精品资料
  • 1、回复“5GSX”免费领取《5G关键技术之超级上行
  • 2、回复“G616”免费领取《5G技术与标准介绍
  • 3、回复“G615”免费领取《5G基本原理与技术
  • 4、回复“HWNB”免费领取《华为NB-IoT最全解决方案
  • 5、回复“5GZDA”免费领取《中国电信5G站点安装详细教程
  • 6、回复“6gppt”免费领取《6G总体愿景与潜在关键技术白皮书介绍
  • 7、回复“6gwp”免费领取《6G总体愿景与潜在关键技术白皮书
  • 8、回复“5GZG”免费领取《中国移动 2.6G 5G信令流程详解
  • 对本帖内容的看法? 我要点评

     
    [充值威望,立即自动到帐] [VIP贵宾权限+威望套餐] 另有大量优惠赠送活动,请光临充值中心
    充值拥有大量的威望和最高的下载权限,下载站内资料无忧
    houmu
    VIP会员
    鎵嬫満鍙风爜宸查獙璇


     发短消息    关注Ta 

    积分 275
    帖子 83
    威望 50250 个
    礼品券 0 个
    专家指数 -140
    注册 2015-1-24
    专业方向  终端
    回答问题数 14
    回答被采纳数 0
    回答采纳率 0%
     
    发表于 2015-04-14 20:16:13 
    技术问题,回答得专家指数,快速升级
    如果PLMN为5位,MNC第三位是十六进制F,即15。

    对本帖内容的看法? 我要点评

     
    [立即成为VIP会员,百万通信专业资料立即下载,支付宝、微信付款,简单、快速!]
    houmu
    VIP会员
    鎵嬫満鍙风爜宸查獙璇


     发短消息    关注Ta 

    积分 275
    帖子 83
    威望 50250 个
    礼品券 0 个
    专家指数 -140
    注册 2015-1-24
    专业方向  终端
    回答问题数 14
    回答被采纳数 0
    回答采纳率 0%
     
    发表于 2015-04-14 20:36:34 
    协议25.003
    地址:http://www.3gpp.org/ftp/Specs/archive/23_series/23.003/

    9Definition of Access Point Name
    In the GPRS backbone, an Access Point Name (APN) is a reference to a GGSN. To support inter-PLMN roaming, the internal GPRS DNS functionality is used to translate the APN into the IP address of the GGSN.
    9.0General
    Access Point Name as used in the Domain Name System (DNS) Procedures defined in 3GPP TS 29.303 [73] is specified in subclause 19.4.2.2.
    9.1Structure of APN
    The APN is composed of two parts as follows:
    The APN Network Identifier; this defines to which external network the GGSN/PGW is connected and optionally a requested service by the MS. This part of the APN is mandatory.
    The APN Operator Identifier; this defines in which PLMN GPRS/EPS backbone the GGSN/PGW is located. This part of the APN is optional.
    NOTE 1:The APN Operator Identifier is mandatory on certain interfaces, see the relevant stage 3 specifications.
    The APN Operator Identifier is placed after the APN Network Identifier. An APN consisting of both the Network Identifier and Operator Identifier corresponds to a DNS name of a GGSN/PGW; the APN has, after encoding as defined in the paragraph below, a maximum length of 100 octets.
    The encoding of the APN shall follow the Name Syntax defined in RFC 2181 [18], RFC 1035 [19] and RFC 1123 [20]. The APN consists of one or more labels. Each label is coded as a one octet length field followed by that number of octets coded as 8 bit ASCII characters. Following RFC 1035 [19] the labels shall consist only of the alphabetic characters (A-Z and a-z), digits (0-9) and the hyphen (-). Following RFC 1123 [20], the label shall begin and end with either an alphabetic character or a digit. The case of alphabetic characters is not significant. The APN is not terminated by a length byte of zero.
    NOTE 2:A length byte of zero is added by the SGSN/MME at the end of the APN before interrogating a DNS server.
    For the purpose of presentation, an APN is usually displayed as a string in which the labels are separated by dots (e.g. "Label1.Label2.Label3").
    9.1.1Format of APN Network Identifier
    The APN Network Identifier shall contain at least one label and shall have, after encoding as defined in subclause 9.1 above, a maximum length of 63 octets. An APN Network Identifier shall not start with any of the strings "rac", "lac", "sgsn" or "rnc", and it shall not end in ".gprs", i.e. the last label of the APN Network Identifier shall not be "gprs". Further, it shall not take the value "*".
    In order to guarantee uniqueness of APN Network Identifiers within or between GPRS/EPS PLMN, an APN Network Identifier containing more than one label shall correspond to an Internet domain name. This name should only be allocated by the PLMN if that PLMN belongs to an organisation which has officially reserved this name in the Internet domain. Other types of APN Network Identifiers are not guaranteed to be unique within or between GPRS/EPS PLMNs.
    An APN Network Identifier may be used to access a service associated with a GGSN/PGW. This may be achieved by defining:
    -an APN which corresponds to a FQDN of a GGSN/PGW, and which is locally interpreted by the GGSN/PGW as a request for a specific service, or
    -an APN Network Identifier consisting of 3 or more labels and starting with a Reserved Service Label, or an APN Network Identifier consisting of a Reserved Service Label alone, which indicates a GGSN/PGW by the nature of the requested service. Reserved Service Labels and the corresponding services they stand for shall be agreed between operators who have GPRS/EPS roaming agreements.
    9.1.2Format of APN Operator Identifier
    The APN Operator Identifier is composed of three labels. The last label (or domain) shall be "gprs". The first and second labels together shall uniquely identify the GPRS/EPS PLMN.
    For each operator, there is a default APN Operator Identifier (i.e. domain name). This default APN Operator Identifier is derived from the IMSI as follows:
    "mnc<MNC>.mcc<MCC>.gprs"
    where:
    "mnc" and "mcc" serve as invariable identifiers for the following digits.
    <MNC> and <MCC> are derived from the components of the IMSI defined in subclause 2.2.
    This default APN Operator Identifier is used for home routed inter-PLMN roaming situations when attempting to translate an APN consisting only of a Network Identifier into the IP address of the GGSN/PGW in the HPLMN. The PLMN may provide DNS translations for other, more human-readable, APN Operator Identifiers in addition to the default Operator Identifier described above.
    Alternatively, in the roaming case if the GGSN/PGW from the VPLMN is to be selected, the APN Operator Identifier for the UE is constructed from the serving network PLMN ID. In this case, the APN-OI replacement field, if received, shall be ignored.
    In order to guarantee inter-PLMN DNS translation, the <MNC> and <MCC> coding used in the "mnc<MNC>.mcc<MCC>.gprs" format of the APN OI shall be:
    <MNC> = 3 digits
    <MCC> = 3 digits
    If there are only 2 significant digits in the MNC, one "0" digit is inserted at the left side to fill the 3 digits coding of MNC in the APN OI.
    As an example, the APN OI for MCC 345 and MNC 12 will be coded in the DNS as "mnc012.mcc345.gprs".
    The APN-OI replacement is only used for selecting the GGSN/PGW from the HPLMN. The format of the domain name used in the APN-OI replacement field (as defined in 3GPP TS 23.060 [3] and 3GPP TS 23.401 [72]) is the same as the default APN-OI as defined above except that it may be preceded by one or more labels each separated by a dot.
    EXAMPLE 1:province1.mnc012.mcc345.gprs
    EXAMPLE 2:ggsn-cluster-A.provinceB.mnc012.mcc345.gprs
    The APN constructed using the APN-OI replacement field is only used for DNS translation. The APN when being sent to other network entities over GTP interfaces shall follow the rules as specified in 3GPP TS 23.060 [3] and 3GPP TS 23.401 [72].
    9.2Definition of the Wild Card APN
    The APN field in the HLR may contain a wild card APN if the HPLMN operator allows the subscriber to access any network of a given PDP Type. If an SGSN has received such a wild card APN, it may either choose the APN Network Identifier received from the Mobile Station or a default APN Network Identifier for addressing the GGSN when activating a PDP context.
    9.2.1Coding of the Wild Card APN
    The wild card APN is coded as an APN with "*" as its single label, (i.e. a length octet with value one, followed by the ASCII code for the asterisk).
    9.3Definition of Emergency APN
    The Emergency APN (Em-APN) is an APN used to derive a PDN GW selected for IMS Emergency call support. The exact encoding of the Em-APN is the responsibility of each PLMN operator as it is only valid within a given PLMN.

    共获得 2 次点评 我要点评

    • wwwmscbsccom 专家指数 +1 , 威望 +5 个
      · 加分,很专业的讨论 详细.. 发表与:2015-4-20 22:07:29
    • 铭哲 威望 +2 个
      · 加分,很好的资料 详细.. 回复 发表与:2015-4-20 12:43:35
     
    最新通信职位:广东通信人才网 | 北京通信人才网 | 上海通信人才网 | 南京通信人才网 | 西安通信人才网 | 重庆通信人才网 | 中国通信人才网
    铭哲
    初级会员
    鎵嬫満鍙风爜宸查獙璇


     发短消息    关注Ta 

    积分 455
    帖子 91
    威望 9553 个
    礼品券 5 个
    专家指数 0
    注册 2011-9-14
    专业方向  移动通信
    回答问题数 0
    回答被采纳数 0
    回答采纳率 0%
     
    发表于 2015-04-20 10:25:02  只看楼主 
    您好,按下面协议说的,如果MNC是2位,在最高为插入0,作为填充。您这解释我还不太理解。 As an example, the APN OI for MCC 345 and MNC 12 will be coded in the DNS as "mnc012.mcc345.gprs".

    对本帖内容的看法? 我要点评

     
    [2分钟拥有VIP权限和充足威望,可下载站内任何资料] [快速找到一份高薪的通信行业职位]
    铭哲
    初级会员
    鎵嬫満鍙风爜宸查獙璇


     发短消息    关注Ta 

    积分 455
    帖子 91
    威望 9553 个
    礼品券 5 个
    专家指数 0
    注册 2011-9-14
    专业方向  移动通信
    回答问题数 0
    回答被采纳数 0
    回答采纳率 0%
     
    发表于 2015-04-20 10:27:17  只看楼主 
    非常感谢好心人

    对本帖内容的看法? 我要点评

     
    最新通信职位:广东通信人才网 | 北京通信人才网 | 上海通信人才网 | 南京通信人才网 | 西安通信人才网 | 重庆通信人才网 | 中国通信人才网
    铭哲
    初级会员
    鎵嬫満鍙风爜宸查獙璇


     发短消息    关注Ta 

    积分 455
    帖子 91
    威望 9553 个
    礼品券 5 个
    专家指数 0
    注册 2011-9-14
    专业方向  移动通信
    回答问题数 0
    回答被采纳数 0
    回答采纳率 0%
     
    发表于 2015-04-20 12:43:35  只看楼主 


    QUOTE:
    原帖由 houmu 于 2015-4-14 20:36:34 发表
    协议25.003
    地址:http://www.3gpp.org/ftp/Specs/archive/23_series/23.003/

    9Definition of Access Point Name
    In the GPRS backbone, an Access Point Name (APN) is a reference to a GGSN. To sup ...

    加分,很好的资料

    对本帖内容的看法? 我要点评

     
    [2分钟拥有VIP权限和充足威望,可下载站内任何资料] [快速找到一份高薪的通信行业职位]
    wwwmscbsccom
    超级版主
    鎵嬫満鍙风爜宸查獙璇


     发短消息    关注Ta 

    公益·慈善勋章   专家·高级勋章   纪念勋章·八周年   纪念勋章·九周年  
    积分 16828
    帖子 1497
    威望 31977 个
    礼品券 1225 个
    专家指数 9343
    注册 2013-4-27
    专业方向  终端、协议测试、软件测试
    回答问题数 3193
    回答被采纳数 1051
    回答采纳率 33%
     
    发表于 2015-04-20 22:09:49 
    1.PLMN可以是5位也可以是6位
    2.对于卡中的PLMN来说,通过IMSI中的关键字段指定,详细可参考3GPP 31.102或者51.101
    3.对于网络的PLMN都是3字节,6位数,如果是5位,则空余的补F

    对本帖内容的看法? 我要点评





    http://www.mscbsc.com/bbs/space.php?uid=10105337
     
    热点: 通信招聘职位 | 网络优化全集 | WCDMA精品 | TD-SCDMA学习资料 | EVDO | MGW媒体网关资料
    铭哲
    初级会员
    鎵嬫満鍙风爜宸查獙璇


     发短消息    关注Ta 

    积分 455
    帖子 91
    威望 9553 个
    礼品券 5 个
    专家指数 0
    注册 2011-9-14
    专业方向  移动通信
    回答问题数 0
    回答被采纳数 0
    回答采纳率 0%
     
    发表于 2015-04-21 16:18:54  只看楼主 
    谢谢超版 答疑解惑

    对本帖内容的看法? 我要点评

     
    热点: 通信招聘职位 | 网络优化全集 | WCDMA精品 | TD-SCDMA学习资料 | EVDO | MGW媒体网关资料

    快速回复主题    
    标题
    内容
     上传资料请点左侧【添加附件】

    当前时区 GMT+8, 现在时间是 2021-06-18 10:48:53
    渝ICP备11001752号  Copyright @ 2006-2016 mscbsc.com  本站统一服务邮箱:mscbsc@163.com

    Processed in 0.645200 second(s), 36 queries , Gzip enabled
    TOP
    清除 Cookies - 联系我们 - 移动通信网 - 移动通信论坛 - 通信招聘网 - Archiver