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TS 36.423 (RAN3)
E-UTRAN – X2 Application Protocol (X2AP)

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(W-zip) V14.0    2016/09    239 p.
(P) V13.5    2016/09    238 p.
(P) V12.9    2016/06    210 p.
(P) V11.9    2015/03    145 p.
(P) V10.7    2013/09    137 p.
(P) V9.6    2011/04    124 p.
(P) V8.9    2010/04    103 p.


Rapporteur:  Mr. Drevö, Markus
See also:  –


This TS specifies the radio network layer signalling procedures of the control plane between eNBs in E-UTRAN.

X2 Application Protocol (X2AP) in X2 Control Plane stack

X2AP supports the functions of X2 interface by signalling procedures defined in this TS. X2AP is developed in accordance to the general principles stated in TS 36.401 and TS 36.420.



 

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1   Scope [R8]   PDF-p. 10
2   References [R8]
3   Definitions, symbols and abbreviations [R8]   PDF-p. 11
4   General [R8]   PDF-p. 13
5   X2AP services [R8]      Up
6   Services expected from signalling transport [R8]
7   Functions of X2AP [R8]
8   X2AP procedures [R8]   PDF-p. 15
8.1   Elementary procedures
8.2   Basic mobility procedures   PDF-p. 17
8.3   Global Procedures   PDF-p. 24
8.3.1   Load Indication
8.3.2   Error Indication
8.3.3   X2 Setup
8.3.4   Reset
8.3.5   eNB Configuration Update
8.3.6   Resource Status Reporting Initiation
8.3.7   Resource Status Reporting   PDF-p. 34
8.3.8   Mobility Settings Change [R9]
8.3.9   Radio Link Failure Indication [R9]
8.3.10   Handover Report [R9]
8.3.11   Cell Activation [R9]
8.3.12   X2 Removal [R12]
8.3.13   Retrieve UE Context [R13]
8.4   X2 Release [R12]
8.5   X2AP Message Transfer [R12]
8.6   Procedures for Dual Connectivity [R12]
9   Elements for X2AP Communication [R8]
9.0   General
9.1   Message Functional Definition and Content      Up
9.1.1   Messages for Basic Mobility Procedures
9.1.2   Messages for global procedures
9.1.3   Messages for Dual Connectivity Procedures [R12]
9.2   Information Element definitions   PDF-p. 97
9.2.0   General
9.2.1   GTP Tunnel Endpoint
9.2.2   Trace Activation   PDF-p. 98
9.2.3   Handover Restriction List
9.2.4   PLMN Identity   PDF-p. 99
9.2.5   DL Forwarding   PDF-p. 100      Up
9.2.6   Cause
9.2.7   Criticality Diagnostics   PDF-p. 105
9.2.8   Served Cell Information   PDF-p. 106
9.2.9   E-RAB Level QoS Parameters   PDF-p. 109
9.2.10   GBR QoS Information
9.2.11   Bit Rate   PDF-p. 110
9.2.12   UE Aggregate Maximum Bit Rate
9.2.13   Message Type
9.2.14   ECGI   PDF-p. 111
9.2.15   COUNT Value      Up
9.2.16   GUMMEI
9.2.17   UL Interference Overload Indication
9.2.18   UL High Interference Indication   PDF-p. 112
9.2.19   Relative Narrowband Tx Power (RNTP)
9.2.20   GU Group Id   PDF-p. 114
9.2.21   Location Reporting Information
9.2.22   Global eNB ID   PDF-p. 115
9.2.23   E-RAB ID
9.2.24   eNB UE X2AP ID
9.2.25   Subscriber Profile ID for RAT/Frequency priority      Up
9.2.26   EARFCN
9.2.27   Transmission Bandwidth   PDF-p. 116
9.2.28   E-RAB List
9.2.29   UE Security Capabilities
9.2.30   AS Security Information   PDF-p. 117
9.2.31   Allocation and Retention Priority
9.2.32   Time To Wait   PDF-p. 118
9.2.33   SRVCC Operation Possible
9.2.34   Hardware Load Indicator
9.2.35   S1 TNL Load Indicator   PDF-p. 119      Up
9.2.36   Load Indicator
9.2.37   Radio Resource Status
9.2.38   UE History Information
9.2.39   Last Visited Cell Information   PDF-p. 120
9.2.40   Last Visited E-UTRAN Cell Information
9.2.41   Last Visited GERAN Cell Information
9.2.42   Cell Type
9.2.43   Number of Antenna Ports   PDF-p. 121
9.2.44   Composite Available Capacity Group [R9]
9.2.45   Composite Available Capacity [R9]      Up
9.2.46   Cell Capacity Class Value [R9]
9.2.47   Capacity Value [R9]   PDF-p. 122
9.2.48   Mobility Parameters Information [R11]
9.2.49   Mobility Parameters Modification Range [R11]
9.2.50   PRACH Configuration [R9]
9.2.51   Subframe Allocation [R9]   PDF-p. 123
9.2.52   CSG Membership Status [R10]
9.2.53   CSG ID [R10]
9.2.54   ABS Information [R10]
9.2.55   Invoke Indication [R10]   PDF-p. 125      Up
9.2.56   MDT Configuration [R10]
9.2.57   Void
9.2.58   ABS Status [R10]   PDF-p. 128
9.2.59   Management Based MDT Allowed [R10]   PDF-p. 129
9.2.60   MultibandInfoList [R11]
9.2.61   M3 Configuration [R11]
9.2.62   M4 Configuration [R11]
9.2.63   M5 Configuration [R11]
9.2.64   MDT PLMN List [R11]   PDF-p. 130
9.2.65   EARFCN Extension [R11]
9.2.66   COUNT Value Extended [R11]      Up
9.2.67   Extended UL Interference Overload Info [R12]
9.2.68   RNL Header [R12]   PDF-p. 131
9.2.69   Masked IMEISV [R12]
9.2.70   Expected UE Behaviour [R12]   PDF-p. 132
9.2.71   Expected UE Activity Behaviour [R12]
9.2.72   SeNB Security Key [R12]
9.2.73   SCG Change Indication [R12]   PDF-p. 133
9.2.74   CoMP Information [R12]
9.2.75   CoMP Hypothesis Set [R12]
9.2.76   RSRP Measurement Report List [R12]   PDF-p. 134      Up
9.2.77   Dynamic DL transmission information [R12]   PDF-p. 135
9.2.78   ProSe Authorized [R12]
9.2.79   CSI Report [R13]
9.2.80   Wideband CQI [R13]   PDF-p. 136
9.2.81   Subband CQI [R13]
9.2.82   COUNT Value for PDCP SN Length 18 [R13]   PDF-p. 137
9.2.83   LHN ID [R13]
9.2.84   Correlation ID [R13]
9.2.85   UE Context Kept Indicator [R13]
9.2.86   eNB UE X2AP ID Extension [R13]   PDF-p. 138      Up
9.2.87   M6 Configuration [R13]
9.2.88   M7 Configuration [R13]
9.2.89   Tunnel Information [R13]
9.2.90   X2 Benefit Value [R13]   PDF-p. 139
9.2.91   Resume ID [R13]
9.2.92   Bearer Type [R13]
9.3   Message and Information Element Abstract Syntax (with ASN.1)   PDF-p. 140
9.4   Message transfer syntax   PDF-p. 233
9.5   Timers
10   Handling of unknown, unforeseen and erroneous protocol data [R8]
A   Change History   PDF-p. 234

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