IP-SM-GW

• IP-SM-GW=IP SM GW=IP-SM Gateway=IP Short-Messaging Gateway
  • 一句话描述：一个用来实现SMS over IP的AS
    • AS=Application Server
  • 背景
    • 希望通过IP发送SMS短信
      • SMS over IP
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    • IP-SM-GW网络架构
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    • 2 IPSMGW sites
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    • IPSMGW – CS Fallback
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  • 作用
    • 概述
      • The IP-SM-GW shall provide the protocol interworking for delivery of the short message between the IP-based UE and the SMS-SC
      • The message is routed to the SMS-SC for delivery to the SMS-based user or the message is received from the SMS-SC of an SMS-based UE for delivery to an IP-based UE
    • 包括
      • to determine the domain (CS/PS or IMS) for delivery of a Short Message
      • to connect to the SMS-GMSC using established MAP protocols, appearing to the SMS-GMSC as an MSC or SGSN using the E or Gd interfaces
      • to respond to Send Routeing Information for Short Message requests made by the SMS-GMSC, and forwarded from the HSS, with its own address
      • to connect to the SMS-IWMSC using established MAP protocols, appearing to the SMS-IWMSC as an MSC or SGSN using the E or Gd interfaces
      • to connect to the HSS using established MAP protocols , to obtain the address of MSC/SGSN address(es) for SM termination in CS/PS
      • to acquire and maintain knowledge of the association between the MSISDN, IMSI and the address of the S-CSCF serving of the user;
      • to check that it has a valid address in SMS for the sender as well as the recipient when receiving an IMS message for an SMS user. The IP-SM-GW shall obtain a valid address for both from the SIP headers of the IMS message (e.g. the sender would be identified in the asserted id in form of TEL URI);
      • for terminating procedures, to map the recipient’s address from an MSISDN/IMSI to TEL URI format when receiving an SMS for an IP-based UE, and then it is the responsibility of the IMS core to perform any further mapping towards a SIP URI as required;
      • to act as an Application Server towards the IMS core;
      • to perform domain selection to choose the appropriate domain to deliver a message to a recipient and to obtain the MSC and/or SGSN addresses from the HSS; and
      • to manage flags indicating user availability for SMS termination in the HSS
  • 架构
    • Architecture for providing SMS over a generic IP-CAN
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    • 子模块
      • IP-SM-GW stack
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      • IP-SM-GW Transport layer
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  • 相关
    • Short Message delivery with Transport-Level interworking
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    • Sh Reference Point
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    • Sh for Failover
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  • 具体实现
    • Sentinel
      • SentinelIP-SM-GW in an LTE network
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    • GL
      • Simulation of IP-SM-GW for SMS over IMS Network
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