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Glossary

VLR (Visitor Location Register) in 3GPP: meaning and where it is specified

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

At a glance

Term
VLR
Stands for
Visitor Location Register
Defined in
3GPP TR 21.905 V19.2.0, clause 4
Used in
TS 23.002, TS 29.002, TS 32.250

In plain words

The 3GPP vocabulary entry defines VLR as "Visitor Location Register". TS 23.002 and TS 29.002 each include a clause titled The Visitor Location Register (VLR). TS 32.250 says, if enabled, each location registration or update received by the VLR for a mobile subscriber gets a location update record.

Source: 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

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 4.1.1.2. © 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 29.002 V19.1.0, clause 6.1.3.4. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/29_series/29.002/29002-j10.zip
  4. 3GPP TS 32.250 V19.0.0, clause 6.1.3.11. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/32_series/32.250/32250-j00.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.