Release ledger
Canonical Atlas record
TS 25.301
Radio interface protocol architecture
Release evolution
Compare evidence between releases
Use indexed version, Work Item and Change Request evidence to see what changed around this specification. This is an evidence trail, not a clause-by-clause normative diff.
Rel-6 snapshot
Work affecting this release
9 indexed Change Requests · 7 connected Work Items.
Showing 9 CR records from the available cross-release sample. Browse release CR records (JSON) →
CR 0075 — Introduction of MBMS
CR 0071 — Introduction of Enhanced Uplink
CR 0072 — Uncomplete logical channel identification for FACH
CR 0074 — Lossless DL RLC PDU size change
CR 0077 — Feature Clean-up: Removal of DSCH (FDD)
CR 0079 — Feature Clean Up: Removal of CPCH
CR 0081 — Correction the mapping of PCCH to FACH
CR 0086 rev.3 — Clarification on E-DCH Logical Channel Identities
CR 0093 — Correction of figures
Version history
Indexed versions
Showing 59 of 59 indexed versions.
Atlas classifications
Meaning and provenance
No Atlas classifications have been attached yet.
Work Items
Standards work connected to TS 25.301
Rel-4 RAN improvements
Historical association · verification pendingLow Chip Rate TDD option
Historical association · verification pendingLayer 2 and layer 3 protocol aspects
Rel-5 RAN improvements
Historical association · verification pendingHigh Speed Downlink Packet Access
Historical association · verification pendingLayer 2 and 3 aspects
(Small) Technical Enhancements and Improvements for Rel-5
Rel-6 RAN improvements
Historical association · verification pendingRel-6 Charging Management
Historical association · verification pendingFDD Enhanced Uplink
FDD Enhanced Uplink - Layer 2 and 3 Protocol Aspects
Multimedia Broadcast and Multicast Service
Historical association · verification pendingIntroduction of MBMS in RAN
(Small) Technical Enhancements and Improvements for Rel-6
Rel-7 Improvements of the Radio Interface
Historical association · verification pendingRel-7 RAN improvements
Historical association · verification pendingEDCHTDD: Layer 2 and 3 Protocol Aspects
Historical association · verification pending1.28 Mcps TDD Enhanced Uplink: Layer 2 and 3 Protocol Aspects
Historical association · verification pendingMp (MRFC - MRFP) interface
Historical association · verification pendingEnhanced CELL_FACH State in FDD
Historical association · verification pendingImproved L2 support for high data rates
7.68 Mcps TDD option
Historical association · verification pendingVHCRTDD: Layer 2 and layer 3 protocol aspects
Rel-8 RAN improvements
Historical association · verification pendingEnhanced CELL_FACH state in 1.28 Mcps TDD
Enhancements for FDD HSPA Evolution
Enhanced Uplink for CELL_FACH State in FDD
Improved L2 for uplink
Rel-8 Improvements of the Radio Interface
Historical association · verification pendingCS Voice Service over HSPA
Rel-9 RAN improvements
Historical association · verification pendingCore part: Enhanced Broadcast of System Information
Historical association · verification pendingCore part: L2/L3 Downlink enhancements for UMTS
Harmonized Standard
Historical association · verification pendingLawful Interception for GSM Features transposed to UMTS
Historical association · verification pending(Small) Technical Enhancements and Improvements for R99
Knowledge graph
Related standards
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