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Glossary

HSS (Home Subscriber Server) in 3GPP: meaning and where it is specified

Published 2026-10-16Updated 2026-10-16

At a glance

Term
HSS
Stands for
Home Subscriber Server
Defined in
3GPP TR 21.905 V19.2.0, clause 4
Used in
TS 23.002, TS 23.228, TS 23.278

In plain words

HSS stands for Home Subscriber Server, as listed in TR 21.905, clause 4. TS 23.002 has a section titled The Home Subscriber Server (HSS). For subscribers requiring CAMEL support, TS 23.278 says the HSS includes some functionality formerly present in the HLR for storing relevant CAMEL subscription information for IMS. In TS 23.228, for 3GPP2 systems, "the term "HSS" is used to represent the Home AAA entity plus the Databases to which it interfaces."

Source: 3GPP TS 23.228 V15.5.0, clause L.2.1. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/23_series/23.228/23228-f50.zip

Sources

  1. 3GPP TR 21.905 V19.2.0, clause 4. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/21_series/21.905/21905-j20.zip
  2. 3GPP TS 23.002 V19.0.0, clause 4.1.1.1. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/23_series/23.002/23002-j00.zip
  3. 3GPP TS 23.278 V19.0.0, clause 3.1. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/23_series/23.278/23278-j00.zip
  4. 3GPP TS 23.228 V15.5.0, clause L.2.1. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/23_series/23.228/23228-f50.zip

How this page was made

The facts box comes straight from the 3GPP TDoc list and specification archive as indexed by 3GPP Scout. An AI model (GPT-6 Luna) wrote the paragraph and named the source of each sentence. Code checked every quote word for word against the stored source text and every number against the cited source. A second AI model from another company (Claude Opus 5.5) reviewed the paragraph against the same sources. The 3GPP documents themselves govern.