SDN-R_impacts

SDN-R is modified for

RANSlice Instantiation
RANSlice Modification
RANSlice Activation
RANSlice Deactivation
RANSlice Termination
Closed Loop (covers intelligent slicing)

Refer the end-to-end RAN Slicing flow: https://wiki.onap.org/display/DW/RAN+Slicing+Flow

First draft of YANG Models for Northbound RPC's for review and comments
- RANSlice-API.yang
- RANSlice-API-tree
G-release yang model is available at https://gerrit.onap.org/r/gitweb?p=ccsdk/features.git;a=tree;f=sdnr/northbound/ranSlice/model/src/main/yang;h=8a63dcd8202b01ac259136e57fd786428595feba;hb=refs/heads/guilin

Assumptions & Limitations:

PLMNInfo
1. sNSSAI is configured in NRCellDU, NRCellCU, gNBCUUPFunction
2. ConfigDB updates are not handled for activate and deactivate flows
RRMPolicy
1. rRMPolicyDedicatedRatio is alone considered for this release which indicates that resource sharing is not allowed across the RRMPolicymemberslist
2. RRMPolicy update is handled for NRCellDU, NRCellCU, gNBCUUPFunction
YANG Model
1. NearRTRIC sliceprofile is not updated to Netconf in G-release

RAN Slice Lifecycle Management

SDNR Development

DMaapInterfaces & I/O parameters:

SO (RAN NSSMF) → SDN-C :

Topic Details:

Consumer Topics: (Polls messages from SO)

RAN-Slice-Mgmt – Requests from SO are posted at this topic. The same topic is used for all RPCs

Asynchronous Response:

Call back to SO is sent via Rest API

DMaap Messages:

RAN NF NSSI Allocation

Request

{ 
    "body": { 
        "input": { 
            "CommonHeader": { 
                "TimeStamp": "2018-11-30T09:13:37.368Z", 
                "APIver": "1.0", 
                "RequestID": "9d2d790e-a5f0-11e8-98d0-529269fb1459", 
  				 "SubRequestID": "1", 
                "RequestTrack": {}, 
                "Flags": {} 
            }, 
            "Action": "allocate”,             
            "payload": "{ \"input\": { \"sliceProfile\": { \"sliceProfileId\": \"1002\", \"sNSSAI\": \"100-10000\", \"maxNumberofUEs\": 20000, \"latency\": 10, \"uLThptPerSlice\": 3000, \"dLThptPerSlice\": 3000, \"maxNumberofConns\": 4000, \"coverageAreaList\": [\"Lavelle\"], \"uEMobilityLevel\": \"\", \"resourceSharingLevel\": \"\", \"pLMNIdList\": [\"310-410\"] }, \"RANNSSIId\": \"\", \"RANNFNSSIId\": \"\", \"callbackURL\": \"\", \"additionalproperties\": { } } }" 
 }
        }, 
        "version": "1.0", 
 "rpc-name": " InstantiateRANSlice", 
        "correlation-id": "9d2d790e-a5f0-11e8-98d0-529269fb1459-1", 
        "type": "request"
}

RAN NF NSSI Modification

Request

{
	"body": {
		"input": {
			"CommonHeader": {
				"TimeStamp": "2018-11-30T09:13:37.368Z",
				"APIver": "1.0",
				"RequestID": "9d2d790e-a5f0-11e8-98d0-529269fb1459",
				"SubRequestID": "1",
				"RequestTrack": {},
				"Flags": {}
			},
			"Action": "modify-allocate,modify-deallocate,reconfigure",
			"Payload": "{\"input\":{\"sliceProfile\":{\"sliceProfileId\":\"\",\"sNSSAI\":\"001-100001\",\"maxNumberofUEs\": 5000, \"uLThptPerSlice\":3000,\"dLThptPerSlice\":3000,\"maxNumberofConns\":4000},\"RANNFNSSIId\":\"\",\"callbackURL\":\"\",\"globalCustomerId\":\"5GCustomer\",\"serviceType\":\"5G\",\"additionalproperties\":{\"resourceConfig\":{}}}}"
		}
	},
	"version": "1.0",
	"rpc-name": " InstantiateRANSlice ",
	"correlation-id": "9d2d790e-a5f0-11e8-98d0-529269fb1459-1",
	"type": "request"
}

where,
resourceConfig:
Closed Loop:
{
         "1":{
            "dLThptPerSlice":50,
            "uLThptPerSlice":40
         },
         "2":{
            "dLThptPerSlice":50,
            "uLThptPerSlice":30
          }
}

Intelligent Slicing:

{ 
   "snssai":"0001-0111",
   "data":[
      {
         "gNBCUName":"cucpName",
		 "nearRTRICId":"NearRTRIC1",
         "cellCUList":[
            {
               "cellLocalId":111,
               "configData":{
                  "maxNumberofConns":"20",
                  "predictedMaxNumberofConns":"25",
                  "lastUpdatedTS":"yyyy/MM/dd HH:mm:ss"
               }
            },
            {
               "cellLocalId":112,
               "configData":{
                  "maxNumberofConns":"20",
                  "predictedMaxNumberofConns":"25",
                  "lastUpdatedTS":"yyyy/MM/dd HH:mm:ss"
               }
            }
         ]
      },
      {
         "gNBCUName":"cucpName2",
		"nearRTRICId":"NearRTRIC2",
         "cellCUList":[
            {
               "cellLocalId":113,
               "configData":{
                  "maxNumberofConns":"20",
                  "predictedMaxNumberofConns":"25",
                  "lastUpdatedTS":"yyyy/MM/dd HH:mm:ss"
               }
            },
            {
               "cellLocalId":114,
               "configData":{
                  "maxNumberofConns":"20",
                  "predictedMaxNumberofConns":"25",
                  "lastUpdatedTS":"yyyy/MM/dd HH:mm:ss"
               }
            }
         ]
      }
   ]
}

RAN NF NSSI Termination

Request

{
	"body": {
		"input": {
			"CommonHeader": {
				"TimeStamp": "2018-11-30T09:13:37.368Z",
				"APIver": "1.0",
				"RequestID": "9d2d790e-a5f0-11e8-98d0-529269fb1459",
				"SubRequestID": "1",
				"RequestTrack": {},
				"Flags": {}
			},
			"Action": " deallocate ",
			"Payload": "{\"input\":{\"RANNFNSSIId\":\"79f2ce09-3de3-44cb-aa05-cae0cbe8f778\",\"callbackURL\":\"\",\"sNSSAI\":\"001-100001\",\"sliceProfileId\":\"4b7c3c8f-eb79-401a-b40b-290d74f5b189\",\"additionalproperties\":{}}}"
		}
	},
	"version": "1.0",
	"rpc-name": "terminateRANSliceInstance",
	"correlation-id": "9d2d790e-a5f0-11e8-98d0-529269fb1459-1",
	"type": "request"
}

RAN NF NSSI Activation

Request

{
	"body": {
		"input": {
			"Action": "activate",
			"Payload": "{\"input\":{\"sliceProfileId\":\"4b7c3c8f-eb79-401a-b40b-290d74f5b189\",\"RANNFNSSIId\":\"79f2ce09-3de3-44cb-aa05-cae0cbe8f778\",\"callbackURL\":\"http://so-bpmn-infra.onap:8081/mso/WorkflowMessage/SDNRActivateResponse/ecf745ab-167d-49b3-8f62-8218f2e6eb8a\",\"sNSSAI\":\"001-100001\"}}",
			"CommonHeader": {
				"TimeStamp": "2021-02-24T11:27:33.033",
				"APIver": "1.0",
				"RequestID": "ecf745ab-167d-49b3-8f62-8218f2e6eb8a",
				"SubRequestID": "1"
			}
		}
	},
	"version": "1.0",
	"rpc-name": "activateRANSlice",
	"correlation-id": "ecf745ab-167d-49b3-8f62-8218f2e6eb8a",
	"type": "request"
}

RAN NF NSSI Deactivation

Request

{
	"body": {
		"input": {
			"CommonHeader": {
				"TimeStamp": "2018-11-30T09:13:37.368Z",
				"APIver": "1.0",
				"RequestID": "9d2d790e-a5f0-11e8-98d0-529269fb1459",
				"SubRequestID": "1",
				"RequestTrack": {},
				"Flags": {}
			},
			"Action": "deactivate ",
			"Payload": "{\"input\":{\"RANNFNSSIId\":\"\",\"sNSSAI\":\"001-100001\",\"sliceProfileId\":\"\",\"callbackURL\":\"\",\"additionalproperties\":{}}}"
		}
	},
	"version": "1.0",
	"rpc-name": "deactivateRANSliceInstance",
	"correlation-id": "9d2d790e-a5f0-11e8-98d0-529269fb1459-1",
	"type": "request"
}

Callback:

Callback response to SO is sent through REST API.

EndPoint URL: Comes in SO request

Callback Response

{
  "status": "",
  "reason": {},
  "requestId": "",
  "action": "",
  "nfIds":{
	"CUCPs":[],
    "CUUPs":[],
     "DUs":[]
   }
}

CUCPs - List of gNBCUNames configured as part of this request

CUUPs - List of gNBCUUPId

DUs - List of gNBDUId

DMaap Consumer – RPC Mapping

Scenarios	Action in DMaap message	RPC to invoke
ConfigureNSSI	allocate, modify-allocate, modify-deallocate, reconfigure	instantiateRANSlice
terminateNSSI	terminate	terminateRANSliceInstance
activateNSSI	activate	activateRANSliceInstance
deactivateNSSI	deactivate	deactivateRANSliceInstance

RPCs Supported

configureNearRTRIC
configureCU
configureDU
configureRANSliceInstance
instantiateRANSlice
terminateRANSliceInstance
determineRANSliceResources - Not covered in G-release
activateRANSliceInstance
deactivateRANSliceInstance
CMNotify - Not covered in G-release

RPCs 1,2,3, & 4 are grouped and implemented as a single RPC 'instantiateRANSlice'.

RPC in detail

1. InstantiateRANSlice

This RPC,

a) Allocates resources for a slice subnet instance

b) Configures NSSAI in RAN slice resources – cells, CU’s, DU’s, Near-RT RIC

c) Updates Slice details in Config DB

Actions supported: allocate, modify-allocate, modify-deallocate, reconfigure

allocate - new RAN Slice

modify-allocate - sharing existing RAN slice for a new sNSSAI

modify-deallocate - sNSSAI is removed from the existing RAN Slice when the RAN Slice is shared among more than one sNSSAI and it

cannot be terminated

reconfigure - indicates closed loop or intelligent slicing. It is differentiated, based on the resourceConfig received in the Dmaap payload.

2. ActivateRANSlice

a) Update the RAN resources status as ‘activated’. This is needed to enable the traffic flow

b) Currently, the status of sNSSAI is set to ÁCTIVE

c) Config DB will be updated

Action : activate

3. DeactivateRANSlice

a) Update the RAN resources status as ‘INACTIVE’. status of sNSSAI is set to INÁCTIVE. This is needed to stop the traffic flow

b) Config DB will be updated

Action: deactivate

4. TerminateRANSlice

a) Deallocate resources for a slice subnet instance

b) Disassociate xNF’s to a slice subnet instance

c) Remove RAN slice from Config DB

Action: terminate

Config DB updates

RPC

Entities to update

instantiateRANSlice

NearRTRIC, GNBDUFunction, NRCellDU, RRMPolicy, GNBCUCPFunction,

GNBCUUPFunction, NRCellCU, RANSliceInventory, SliceProfile

terminateRANSlice

NearRTRIC, GNBDUFunction, NRCellDU, RRMPolicy, GNBCUCPFunction,

GNBCUUPFunction, NRCellCU, RANSliceInventory, SliceProfile

Refer Config DB for schema details.

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RAN Slice Lifecycle Management

SDNR Development

DMaap Consumer – RPC Mapping

RPCs Supported

RPC in detail

Config DB updates