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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

Image Added

SDNR Development

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DMaapInterfaces Interfaces & I/O parameters:

SO (RAN NSSMF) → SDN-C :

...

RAN-Slice-Mgmt – Requests from SO are posted at this topic. SDN-R polls the messagesTopic for Closed loop & intelligent slicing – TBD (Existing/New)The same topic is used for all RPCs

Asynchronous Response: (Callback to SO)

Yet to be confirmed (Topic/API)

Call back to SO is sent via Rest API

DMaap MessagesRequest & Response Payload:

RAN NF NSSI Allocation

Code Block

title	Request
collapse	true

{
	"body": {
		"input": {
			"requestIdaction": "allocate",
			"payload": "{ \"input\": { \"sliceProfile\": { \"sliceProfileId\": \"1002\", \"sNSSAI\": \"2002\", \"maxNumberofUEs\": 20000, \"latency\": 10, \"uLThptPerSlice\": 3000, \"dLThptPerSlice\": 3000, \"maxNumberofConns\": 4000, \"coverageAreaList\": [\"Kingston\"], \"uEMobilityLevel\": \"\", \"resourceSharingLevel\": \"\", \"pLMNIdList\": [\"310-410\"] }, \"RANNSSIId\": \"\", \"RANNFNSSIId\": \"\", \"callbackURL\": \"\", \"additionalproperties\": { } } }",
			"common-header": {
				"timestamp": "2020-09-30T09:13:37.368Z",
				"api-ver": "1.0",
				"originator-id": "testing",
				"request-id": "9d2d790e-a5f0-11e8-98d0-529269fb1459",
				"sub-request-id": "",
				"flags": {
					"mode": "EXCLUSIVE",
					"force": "TRUE",
					"ttl": "0"
				}
			}
		}
	},
	"version":  "trackingArea":"",
  "shareability":"",
  "NSIId":"",
  "RANNSSIId":"",
  "RANNFNSSIId":"",
  "s-NSSAI":"",
  "NSSTId":"",
  “callbackURL”:””,
   “additionalproperties”:{
     “resourceConfig”:{
      //This maps contains value only on closed loop scenario
"1.0",
	"rpc-name": "instantiateRANSlice",
	"correlation-id": "9d2d790e-a5f0-11e8-98d0-529269fb1459-1",
	"type": "request"
}

RAN NF NSSI Modification

Requests available for below actions:

modify-allocate
modify-deallocate
closed loop
intelligent slicing

Code Block

title	Request
collapse	true

modify-allocate

{
    "body": {
        "input": {
            "action": "modify-allocate",
            "payload": "{\"input\":{\"sliceProfile\":{\"sliceProfileId\":\"b594-e98r-c7f2-ij78\",\"sNSSAI\":\"101-10000\",\"maxNumberofUEs\": 5000, \"uLThptPerSlice\":3000,\"dLThptPerSlice\":3000,\"maxNumberofConns\":4000},\"RANNFNSSIId\":\"ab9af40f13f721b5f13539d87484098\",\"callbackURL\":\"http://so-bpmn-infra.onap:8081/mso/WorkflowMessage/AsyncSdnrResponse/9d2d790e-a5f0-11e8-98d0-529269fb1459\",\"globalSubscriberId\":\"5GCustomer\",\"subscriptionServiceType\":\"5G\",\"additionalproperties\":{\"resourceConfig\":{}}}}",
            "common-header": {
                "timestamp": "2020-09-30T09:13:37.368Z",
                "api-ver": "1.0",
                "originator-id": "testing",
                "request-id": "9d2d790e-a5f0-11e8-98d0-529269fb1459",
                "sub-request-id": "",
                "flags": {
                    "mode": "EXCLUSIVE",
                    "force": "TRUE",
                    "ttl": "0"
                }
            }
        }
    },
     “action”:” allocate, modify-allocate, modify-deallocate, deallocate, activate, deactivate, reconfigure”
}

Code Block

title	Response

{
  "status": "",
  "reason": {},
  "requestId": "",
  "action": ""
}

RAN NF NSSI Termination

Code Block

title	Request

{
  "RANNFNSSIId": "",
  "requestId": "",
  “callbackURL”:””,
  "action": ""
}

"version": "1.0",
    "rpc-name": "instantiateRANSlice",
    "correlation-id": "9d2d790e-a5f0-11e8-98d0-529269fb1459-1",
    "type": "request"
}


modify-deallocate

{
    "body": {
        "input": {
            "action": "modify-deallocate",
            "payload": "{\"input\":{\"sliceProfile\":{\"sliceProfileId\":\"b594-e98r-c7f2-ij78\",\"sNSSAI\":\"001-100001\",\"maxNumberofUEs\": 5000, \"uLThptPerSlice\":3000,\"dLThptPerSlice\":3000,\"maxNumberofConns\":4000},\"RANNFNSSIId\":\"ab9af40f13f721b5f13539d87484098\",\"callbackURL\":\"\",\"globalSubscriberId\":\"5GCustomer\",\"subscriptionServiceType\":\"5G\",\"additionalproperties\":{\"resourceConfig\":{}}}}",
            "common-header": {
                "timestamp": "2020-09-30T09:13:37.368Z",
                "api-ver": "1.0",
                "originator-id": "testing",
                "request-id": "9d2d790e-a5f0-11e8-98d0-529269fb1459",
                "sub-request-id": "",
                "flags": {
                    "mode": "EXCLUSIVE",
                    "force": "TRUE",
                    "ttl": "0"
                }
            }
        }
    },
    "version": "1.0",
    "rpc-name": "instantiateRANSlice",
    "correlation-id": "9d2d790e-a5f0-11e8-98d0-529269fb1459-1",
    "type": "request"
}


Closed Loop

{
	"body": {
		"input": {
			"action": "reconfigure",
			"payload": "{ \"input\": { \"sliceProfile\": { \"sliceProfileId\": \"b594-e98r-c7f2-ij78\", \"sNSSAI\": \"100-10000\" }, \"RANNFNSSIId\": \"\", \"callbackURL\": \"http:\/\/so-bpmn-infra.onap:8081\/mso\/WorkflowMessage\/AsyncSdnrResponse\/9d2d790e-a5f0-11e8-98d0-529269fb1459\", \"additionalproperties\": { \"resourceConfig\": { \"data\": [{ \"nearRTRICId\": \"11\", \"dLThptPerSlice\": 50, \"uLThptPerSlice\": 40 }, { \"nearRTRICId\": \"22\", \"dLThptPerSlice\": 50, \"uLThptPerSlice\": 30 } ] } } } }",
			"common-header": {
				"timestamp": "2020-09-30T09:13:37.368Z",
				"api-ver": "1.0",
				"originator-id": "testing",
				"request-id": "9d2d790e-a5f0-11e8-98d0-529269fb1459",
				"sub-request-id": "",
				"flags": {
					"mode": "EXCLUSIVE",
					"force": "TRUE",
					"ttl": "0"
				}
			}
		}
	},
	"version": "1.0",
	"rpc-name": "instantiateRANSlice",
	"correlation-id": "9d2d790e-a5f0-11e8-98d0-529269fb1459-1",
	"type": "request"
}



Intelligent Slicing

{
	"body": {
		"input": {
			"action": "reconfigure",
			"payload": "{ \"input\": { \"sliceProfile\": { \"sliceProfileId\": \"b594-e98r-c7f2-ij78\" }, \"RANNFNSSIId\": \"\", \"callbackURL\": \"http:\/\/so-bpmn-infra.onap:8081\/mso\/WorkflowMessage\/AsyncSdnrResponse\/9d2d790e-a5f0-11e8-98d0-529269fb1459\", \"additionalproperties\": { \"resourceConfig\":  { \"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\" } } ] } ] }  } } }",
			"common-header": {
				"timestamp": "2020-09-30T09:13:37.368Z",
				"api-ver": "1.0",
				"originator-id": "testing",
				"request-id": "9d2d790e-a5f0-11e8-98d0-529269fb1459",
				"sub-request-id": "",
				"flags": {
					"mode": "EXCLUSIVE",
					"force": "TRUE",
					"ttl": "0"
				}
			}
		}
	},
	"version": "1.0",
	"rpc-name": "instantiateRANSlice",
	"correlation-id": "9d2d790e-a5f0-11e8-98d0-529269fb1459-1",
	"type": "request"
}

RAN NF NSSI Termination

Code Block

title	Request
collapse	true

{
	"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"
}

Code Block

title	Response

{
  "status": "",
  "reason": {},
  "requestId": "",
  "action": ""
}

RAN NF NSSI Activation

Code Block

title	Request
collapse	true

{
    "body": {
        "input": {
            "action": "activate",
            "payload": "{\"input\":{\"sliceProfileId\":\"1002\",\"RANNFNSSIId\":\"ccb2f161-f1a7-4f9e-aa2b-9e2965e3c8a0\",\"callbackURL\":\"http://so-bpmn-infra.onap:8081/mso/WorkflowMessage/SDNRActivateResponse/ecf745ab-167d-49b3-8f62-8218f2e6eb8a\",\"sNSSAI\":\"101-10000\"}}",
            "common-header": {
                "timestamp": "2020-09-30T09:13:37.368Z",
    "requestId            "api-ver": "1.0",
  “callbackURL”:””,
  "action              "request-id": "ecf745ab-167d-49b3-8f62-8218f2e6eb8a",
                "sub-request-id": "1"
}

Code Block

title	Response

{
  "status            }
        }
    },
    "version": "1.0",
    "reasonrpc-name": {}"activateRANSliceInstance",
    "requestIdcorrelation-id": "ecf745ab-167d-49b3-8f62-8218f2e6eb8a",
    "actiontype": "request"
}

RAN NF NSSI Deactivation

Code Block

title	Request
collapse	true

{
    "body": {
        "input": {
            "action": "deactivate",
            "payload": "{\"input\":{\"sliceProfileId\":\"1002\",\"RANNFNSSIId\":\"ccb2f161-f1a7-4f9e-aa2b-9e2965e3c8a0\",\"callbackURL\":\"http://so-bpmn-infra.onap:8081/mso/WorkflowMessage/SDNRActivateResponse/ecf745ab-167d-49b3-8f62-8218f2e6eb8a\",\"sNSSAI\":\"101-10000\"}}",
            "common-header": {
                "timestamp": "2020-09-30T09:13:37.368Z",
                "api-ver": "1.0",
  "requestId              "request-id": "ecf745ab-167d-49b3-8f62-8218f2e6eb8a",
                "sub-request-id": "1"
            }
        }
    },
    "version": "1.0",
    "rpc-name": "activateRANSliceInstance",
  “callbackURL”:””  "correlation-id": "ecf745ab-167d-49b3-8f62-8218f2e6eb8a",
    "actiontype": "request"
}

Callback response to SO is sent through REST API.Callback:

EndPoint URL: Comes in SO request

Code Block

title	Callback Response
collapse	true

{
  "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	activateRANSliceInstance

RPCs Supported

configureNearRTRIC
configureCU
configureDU
configureRANSliceInstance
instantiateRANSlice
terminateRANSliceInstance
determineRANSliceResources - Not covered in G-release
activateRANSliceInstance
deactivateRANSliceInstance - As this RPC repeats most of the actions of activateRANSliceInstance, it is clubbed with activateRANSliceInstance
CMNotify - Not covered in G-release

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

RPCs 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

Request: Dmaap payload as string

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

allocate - new RAN Slice created across RAN manged elements covered in the Tracking Area (TA) in the DMAAP request. Managed elements for TA is obtained from ConfigDB.

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. terminateRANSliceInstance RPC is used to handle this action.

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

2. ActivateRANSliceInstance

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' for activate, 'INACTIVE' for deactivate

c) Config DB will be updated

Request: Dmaap payload as string

Action : activate, deactivate

4. TerminateRANSliceInstance

a) Deallocate resources for a slice subnet instance

b) Disassociate xNF’s to a slice subnet instance

c) Remove RAN slice from Config DB

Request: Dmaap payload as string

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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Old Version 5

New Version Current

Key

RAN Slice Lifecycle Management

SDNR Development

DMaap Consumer – RPC Mapping

RPCs Supported

RPCs in detail

Config DB updates