|
|
## The X2 interface ##
|
|
## The X2 interface ##
|
|
|
The X2 interface is the interface between one eNB and another eNB for signalling information exchange. This is managed through the X2 Application Protocol (X2-AP) and it is standardized by 3GPP in TS 36.423.
|
|
The X2 interface is the interface between one eNB and another eNB for signalling information exchange. This is managed through the X2 Application Protocol (X2-AP) and it is standardized by 3GPP in TS 36.423.
|
|
|
|
|
|
|
|
The detailed legacy procedure can be found at
|
|
The detailed legacy procedure can be found at:
|
|
|
1. [Analyzing X2 Handover in LTE/LTE-A using OpenAirInterface system emulator](http://www.eurecom.fr/en/publication/4854/download/comsys-publi-4854.pdf)
|
|
1. [Analyzing X2 Handover in LTE/LTE-A using OpenAirInterface system emulator](http://www.eurecom.fr/en/publication/4854/download/comsys-publi-4854.pdf)
|
|
|
1. [NMC LTE X2 Handover](http://www.3glteinfo.com/wp-content/uploads/2013/12/NMC.LTE-X2-Handover.v1.0.pdf)
|
|
1. [NMC LTE X2 Handover](http://www.3glteinfo.com/wp-content/uploads/2013/12/NMC.LTE-X2-Handover.v1.0.pdf)
|
|
|
|
|
|
| ... | @@ -42,7 +42,7 @@ The experiment steps can be described as follows: |
... | @@ -42,7 +42,7 @@ The experiment steps can be described as follows: |
|
|
|
|
|
|
|
**Note 1: For the moment, OAI CN does not yet support the path switch message required for X2 HO, so to test you need to use a 3rd party EPC.**
|
|
**Note 1: For the moment, OAI CN does not yet support the path switch message required for X2 HO, so to test you need to use a 3rd party EPC.**
|
|
|
|
|
|
|
|
**Note 2: Step 1 is not needed for handover experimentation in a lab environment. In addition, UE emulated mobility described in Step 5 can be also performed by manually moving the UE.**
|
|
**Note 2: Step 1 is not needed for handover experimentation in a lab environment. In addition, UE emulated mobility described in Step 6 can be also performed by manually moving the UE.**
|
|
|
|
|
|
|
|
**Note 3: Currently, only intra-frequency handover is implemented.**
|
|
**Note 3: Currently, only intra-frequency handover is implemented.**
|
|
|
|
|
|
| ... | | ... | |