中國移動通訊互連網簡訊網關介面協議網路結構和功能概述

中國移動通訊互連網簡訊網關介面協議網路結構和功能概述 - 王茜翻譯
China Mobile Peer to Peer（CMPP）Network Structure and Overview of CMPP Function

網路結構 Network Structure

如圖1所示，互連網簡訊網關（ISMG）是外部資訊資來源站點實體（SP）與移動網內簡訊中心之間的中介實體，互連網簡訊網關一方面負責接收SP發送給移動使用者的資訊和提交給簡訊中心。另一方面，移動使用者點播SP業務的資訊將由簡訊中心通過互連網簡訊網關發給SP。另外，為了減輕簡訊中心的信令負荷，互連網簡訊網關還應根據路由原則將SP提交的資訊轉寄到相應的互連網簡訊網關。互連網簡訊網關通過向匯接網關（GNS）查詢的方式獲得網關間的轉寄路由資訊。
As shown in Figure 1, ISMG is a medium entity between an external information resource station entity (SP) and the SMSC within the mobile network. On one hand, ISMG is required to receive messages sent by SP to mobile users, and submit them to SMSC. On the other hand, messages of mobile users ordering SP services will be sent by SMSC to SP via ISMG. In addition, to reduce the signaling load of SMSC, ISMG shall also forward messages submitted by SP to the corresponding ISMG according to the route principles. ISMG makes a query to the tandem gateway (GNS), and by doing so gets the forwarding route messages between gateways.

CMPP功能概述 Overview of CMPP Function

CMPP協議主要提供以下兩類業務操作:
CMPP mainly provides the following two types of service operations:

（1） 簡訊發送Message sending（Short Message Mobile Originate，SM MO）
The typical service operations are illustrated in Figure 2:

1) 手機發出資料請求（可能是訂閱資訊或圖片點播等），被源ISMG接收；
The handset sends out a data request (that could be ordering a message or picture) that is received by the source ISMG;

2) 源ISMG對接收到的資訊返迴響應；
The source ISMG returns a response for the message received;

3) 源ISMG在本地查詢不到要串連的SP，向GNS(匯接網關)發路由請求資訊；
The source ISMG sends to GNS (tandem gateway) a route request message when it cannot find the SP to be connected in the local area;

4) GNS將路由資訊返回；
GNS returns the routing message;

5) 源ISMG根據路由資訊將請求前轉給目的ISMG；
The source ISMG forwards the request to the destination ISMG according to the routing message;

6) 目的ISMG對接收到的資訊返迴響應；
The destination ISMG returns a response for the message received;

7) 目的ISMG將請求資訊送SP.
The destination ISMG submits the request information to SP;

8) SP返迴響應；
SP returns a response.

在以上操作中，步驟3到步驟8均使用CMPP協議；
CMPP is used from Step 3 to Step 8 in the above operations;

在隨後的操作中，目的ISMG在接收到SP的響應後將產生MO狀態報表發給源ISMG。
In the succeeding operations, the destination ISMG will generate a MO status report and send it to the source ISMG after it has received the response from SP.

（2） Message receiving（Short Message Mobile Terminated，SM MT）
The typical service operations are illustrated in Figure 3:

1) SP發出資料請求（可能是簡訊通知或手機鈴聲等），被源ISMG接收；
SP sends out a data request (that could be a message alert or handset ring) that is received by the source ISMG;

2) 源ISMG對接收到的資訊返迴響應；
The source ISMG returns a response for the message received;

3) 源ISMG在本機資料庫中找不到目的手機號段所對應網關代碼，向GNS（匯接網關）發路由請求資訊；
The source ISMG sends a route request message to GNS (tandem gateway) when it cannot find the gateway code correspondent to the destination mobile number segment in the local database;

4) 匯接網關將路由資訊返回；
The tandem gateway returns the routing message;

5) 源ISMG根據路由資訊將請求前轉給目的ISMG；
The source ISMG forwards the request to the destination ISMG according to the routing message;

6) 目的ISMG對接收到的資訊返迴響應；
The destination ISMG returns a response for the message received;

7) 目的ISMG將請求資訊發送至SMC；
The destination ISMG sends the request message to SMC;

8) SMC向目的ISMG返迴響應；
SMC returns a response to the destination ISMG.

在上述操作中，步驟1到步驟6均使用CMPP協議；
CMPP is used from Step 1 to Step 6 in the above operations;

在隨後的操作中，SMC將通過NO.7信令網向移動使用者發送資訊，移動使用者收到後將返回狀態報表（Delivery-Receipt）給簡訊中心，簡訊中心將按照MO操作的流程將狀態報表返回給SP（如果SP要求返回狀態報表）。
In the succeeding operations, SMC will send a message to mobile users via the No.7 signaling network. Mobile users will return a status report (Delivery-Receipt) to SMSC after they have received it, and SMSC will return the status report to SP (if SP requires it) according to the MO operation flow.