The s6a and S6d are two examples of diameter interfaces. The s6a interface is between MME and HSS in the LTE network, and the s6d is between SGSN and HSS . Both provide messages and procedures for the phone to attach for 4G services.

This document aims to provide a description of the S6a/S6d Diameter-based interface as supported by the SDM. The S6a/S6d interface is part of the LTE-HSS front-end component of the SDM, alongside the

在s6a接口上的流程中，每个流程的请求包里，都会携带imsi信息，而s1接口的imsi很少出现，可以通过两个接口的关联，使s1-mme, s1-u的数据也能够关联到用户imsi。

Insert Subscriber Data is a Subscriber Data Handling procedure in LTE services. This procedure is used to manage the subscription data of subscriber in MME and SGSN over S6a/S6d interface. IDR is invoked by Home Subscriber Server for subscription data handling.

Trace-Data AVP received in the subscriber data (of ULR or IDR) shall inform the MME/SGSN to start a trace session for the subscriber in question. More about the tracing can be found is TS 32.422. The DSR flag indicates to MME/SGSN to stop the active tracing and clear the trace data, if any, for the trace-reference-id provided in the Trace ...

IDR/IDA messages are used between HSS and MME/SGSN. HSS triggers IDR for any of the following reasons (it is assumed that UE is attached (Purged is not performed in MME/SGSN)) 1) If there is an administrative change in subscription of an attached subscriber. 2) To apply,change or remove operator determined barring to a subscriber

S6a is an LTE 4G mobile-related interface between the MME and HSS used for authentication, location & service information about the subscriber. It uses Diameter over TCP, UDP, SCTP transport protocol. There are 4 messages initiated by the MME and 4 …

A combined MME/SGSN that makes use of separate origin host values in Update Location Request messages sent on S6a and Update Location Request messages sent on S6d can detect whether the IDR from HSS was sent to the MME or to the SGSN.

2016年8月29日 · Based on the 3GPP 29.272, the IDR (Insert-Subscriber-data Request message) is generated by the HSS to the MME to update the subscriber profile in the MME and/or requesting subscriber info such as location-information, subscriber state...

2021年6月20日 · The Insert Subscriber Data Request/Response is a bit novel compared to other S6a requests, in this case it’s initiated by the HSS to the MME (Like the Cancel Location Request), and used to update an existing value.