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osmo-st-msc
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osmo-st-msc/src/PagingManager.st

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Smalltalk

"
(C) 2013 by Holger Hans Peter Freyther
All Rights Reserved
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
"
Object subclass: PagingManager [
| msc |
PagingManager class >> initWith: aMsc [
^ self new
instVarNamed: #msc put: aMsc;
yourself.
]
pageAll: anImsi [
<category: 'paging'>
"Page a subscriber on all LACs of all BSCs"
msc bscConfig bscList do: [:bscConfig |
"This can race with a disconnect but that is fine."
bscConfig connected ifTrue: [
OsmoDispatcher dispatchBlock: [
self pageBSC: bscConfig with: anImsi]]].
]
pageBSC: aBscConfig with: anImsi [
| connection cmd |
<category: 'paging'>
"Page a single BSC"
"Is the bsc still connected?"
connection := aBscConfig connection.
connection ifNil: [
^ false
].
cmd := self createPagingCommand: aBscConfig lac with: anImsi.
connection sendUdt: cmd toMessage asByteArray.
]
createPagingCommand: aLac with: anImsi [
| cmd |
cmd := OsmoGSM.IEMessage initWith: OsmoGSM.GSM0808Helper msgPaging.
cmd
addIe: (OsmoGSM.GSM0808IMSI initWith: anImsi);
addIe: (OsmoGSM.GSM0808CellIdentifierList new
ident: OsmoGSM.GSM0808CellIdentifierList cellLocationAreaCode;
cells: (Array with: aLac);
yourself);
yourself.
^ OsmoGSM.BSSAPManagement initWith: cmd toMessage
]
]