tag:blogger.com,1999:blog-1329449351744515518.post5304469920061498097..comments2023-09-16T01:28:38.178-07:00Comments on Wired n Wireless: LTE End to End Signaling:- Part 2Santosh Dornalhttp://www.blogger.com/profile/08888256274707899999noreply@blogger.comBlogger25125tag:blogger.com,1999:blog-1329449351744515518.post-92153392082602345762013-05-28T22:08:33.029-07:002013-05-28T22:08:33.029-07:00Hi Santhosh,
After the Authentication, LU should ...Hi Santhosh,<br /><br />After the Authentication, LU should happen right? With all subscription details, before MME sends create session to SGW?<br />Thanks for your post..it is always very insightful and simple..RigRam.https://www.blogger.com/profile/13226646538360053852noreply@blogger.comtag:blogger.com,1999:blog-1329449351744515518.post-5173300991870195122011-11-15T12:11:46.818-08:002011-11-15T12:11:46.818-08:00Hi Amit
I dint differentiate between EMM and ESM ...Hi Amit<br /><br />I dint differentiate between EMM and ESM here, refer to 3GPP TS 24.301 for the messages. <br /><br />Regards, SantoshSantosh Dornalhttps://www.blogger.com/profile/08888256274707899999noreply@blogger.comtag:blogger.com,1999:blog-1329449351744515518.post-9964786010130303532011-11-15T06:35:44.371-08:002011-11-15T06:35:44.371-08:00Hi Santosh...congrats!! very nice Blog for a newbe...Hi Santosh...congrats!! very nice Blog for a newbei like me..a quick question - in this end-to end LTE call flow which messages relates to ESM and EMM sessions.Amitnoreply@blogger.comtag:blogger.com,1999:blog-1329449351744515518.post-63761874923352792512010-12-02T08:18:41.470-08:002010-12-02T08:18:41.470-08:00Ok! Here we go. When we say a bearer has been esta...Ok! Here we go. When we say a bearer has been established for UE, that means Radio bearer, S1 Bearer and S5 bearers have been created. These bearer created to carry the traffic from UE to internet. <br /><br />On UE, the traffic originating will be mapped to a radio bearer. This radio bearer traffic will be mapped to corresponding bearer in S1 and S5. These bearers not abstraction. They are real. Radio bearers mean radio resources have been allocated. In the same way in EPS the bearers are treated with different QoS schemes. <br /><br />Hope this helped.Santosh Dornalhttps://www.blogger.com/profile/08888256274707899999noreply@blogger.comtag:blogger.com,1999:blog-1329449351744515518.post-13213341367561055552010-12-02T07:00:18.899-08:002010-12-02T07:00:18.899-08:00Hello!
Sorry, but i have another doub.
When the d...Hello!<br /><br />Sorry, but i have another doub.<br />When the default bearer is created, it is only composed by EPS bearer or also by Radio bearer, S1 bearer and S5/S8 bearer and EPS bearer is only an abstraction to upper layers?<br />When it's necessary a dedicated bearer, is created news bearers (EPS,Radio,S1 and S5/S8 bearers if EPS is only an abstraction to upper layers or only an Radio,S1 and S5/S8 bearers if EPS isn't an abstraction to upper layers) or the existing bearers are modified?<br /><br />ThanksAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-1329449351744515518.post-10689760913367338672010-12-02T03:23:35.007-08:002010-12-02T03:23:35.007-08:00Yes! You are correct.Yes! You are correct.Santosh Dornalhttps://www.blogger.com/profile/08888256274707899999noreply@blogger.comtag:blogger.com,1999:blog-1329449351744515518.post-90382356194194041292010-12-02T02:32:04.084-08:002010-12-02T02:32:04.084-08:00Hello!
In my last doub, I said that the default/d...Hello!<br /><br />In my last doub, I said that the default/dedicated bearer is only created between SGW and PGW, but actually this bearer is created between UE<---->eNB<---->SGW<-->PGW and this is called EPS bearer. This bearer is created to give some QoS.<br />This bearers only are created if the UE has allocated the necessary fisical resources in eNB. <br /><br />It's really or i'm wrong?<br /><br />ThanksAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-1329449351744515518.post-19068989611896195892010-11-30T11:36:02.956-08:002010-11-30T11:36:02.956-08:00Hello!!
I would like have your opinion relatively...Hello!!<br /><br />I would like have your opinion relatively my ideia.<br /><br />when the UE connect to the eNB it's created a default bearer between SGW and PGW, this bearer is transparently for the eNB. Regarding the eNB, the UE indicates how many resources he need, which will be placed if possible. Depending of the type of services used by the UE, the core decides creates a dedicated bearer or not.<br /><br />Do you agree?<br /><br />ThanksAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-1329449351744515518.post-40738334469936518512010-11-25T07:50:32.719-08:002010-11-25T07:50:32.719-08:00I believe its upto the eNB makers. You can check w...I believe its upto the eNB makers. You can check with 36 series specifications.Santosh Dornalhttps://www.blogger.com/profile/08888256274707899999noreply@blogger.comtag:blogger.com,1999:blog-1329449351744515518.post-6798420440274629452010-11-25T07:31:39.430-08:002010-11-25T07:31:39.430-08:00Hello!
Could you explain how the eNB see the reso...Hello!<br /><br />Could you explain how the eNB see the resources they have available, or where I can get this information.<br /><br />thanksAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-1329449351744515518.post-28998884866138301012010-11-24T03:27:52.164-08:002010-11-24T03:27:52.164-08:00As far as I know there are no open source simulato...As far as I know there are no open source simulators. You can check with Catapult or Nethawk for the test tools.<br /><br />I think both organizations have loads of simulators to test LTE networks.Santosh Dornalhttps://www.blogger.com/profile/08888256274707899999noreply@blogger.comtag:blogger.com,1999:blog-1329449351744515518.post-1606022077905865232010-11-24T03:19:06.664-08:002010-11-24T03:19:06.664-08:00Hello Santosh.
Do you know any simulator that all...Hello Santosh.<br /><br />Do you know any simulator that allows to simulate the process of mobility of the LTE, even if through some changes?<br /><br />ThanksAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-1329449351744515518.post-798517004899937252010-11-16T08:54:54.437-08:002010-11-16T08:54:54.437-08:00X2 Handover takes place when the 2 eNBs can commun...X2 Handover takes place when the 2 eNBs can communicate over X2 link. If the X2 link doesnt exist between eNBs then S1 handover takes place which can be intra-MME/SGW or inter MME/SGW.Santosh Dornalhttps://www.blogger.com/profile/08888256274707899999noreply@blogger.comtag:blogger.com,1999:blog-1329449351744515518.post-4098305789404207832010-11-16T06:11:20.285-08:002010-11-16T06:11:20.285-08:00Hello Santosh.
Could you tell me what is the dife...Hello Santosh.<br /><br />Could you tell me what is the diference between x2-handover and Intra-MME/SGW handover?or is the same process?<br /><br />Thank you for your attentionAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-1329449351744515518.post-29963206129024389212010-10-13T20:42:15.055-07:002010-10-13T20:42:15.055-07:00Everything in this blog is from Release 8 as of no...Everything in this blog is from Release 8 as of now. <br /><br />Dedicated bearers are used to specific services like, voip, email, web browsing etc. There is no restriction on when a dedicated bearer should be created for what service. It is upto the service provider.Santosh Dornalhttps://www.blogger.com/profile/08888256274707899999noreply@blogger.comtag:blogger.com,1999:blog-1329449351744515518.post-1309162584489215112010-10-13T08:12:39.282-07:002010-10-13T08:12:39.282-07:00Hello,
The Dedicated bearer establishmen is used ...Hello,<br /><br />The Dedicated bearer establishmen is used for what? specific services? when this is used instead of the standard bearer?<br />You could tell me what release was to seek information to make the diagrams?<br /><br />Thank you for your attentionAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-1329449351744515518.post-46020725723577415432010-10-03T21:11:06.592-07:002010-10-03T21:11:06.592-07:00PGW will direct the traffic with UE IP encapsulate...PGW will direct the traffic with UE IP encapsulated in GTP tunnel. eNB will deliver it to UE.Santosh Dornalhttps://www.blogger.com/profile/08888256274707899999noreply@blogger.comtag:blogger.com,1999:blog-1329449351744515518.post-23929274085472735552010-10-01T04:45:18.625-07:002010-10-01T04:45:18.625-07:00After a bearer(say default bearer during attach) i...After a bearer(say default bearer during attach) is established for an UE in LTE then will the APN use the UE IP as the DestIP in DL packets mandatorily or can the APN use nearest ASP IP as the DEST IP in DL packets.Unknownhttps://www.blogger.com/profile/18002370869177089781noreply@blogger.comtag:blogger.com,1999:blog-1329449351744515518.post-57090321926820818622010-02-26T10:03:49.618-08:002010-02-26T10:03:49.618-08:00Attach complete is not sent in Initial Context Set...Attach complete is not sent in Initial Context Setup. Attach complete is send in Ulpink NAS transport message.Santosh Dornalhttps://www.blogger.com/profile/08888256274707899999noreply@blogger.comtag:blogger.com,1999:blog-1329449351744515518.post-32735564658890388092010-02-26T09:34:21.315-08:002010-02-26T09:34:21.315-08:00why does Attach complete and Inital context setup ...why does Attach complete and Inital context setup response piggybacked?<br />why this is not done inSgsnUnknownhttps://www.blogger.com/profile/04940110278776894557noreply@blogger.comtag:blogger.com,1999:blog-1329449351744515518.post-34406872365713319862010-02-04T10:12:47.237-08:002010-02-04T10:12:47.237-08:00Sure. When I get some time.Sure. When I get some time.Santosh Dornalhttps://www.blogger.com/profile/08888256274707899999noreply@blogger.comtag:blogger.com,1999:blog-1329449351744515518.post-55857330356747013512010-02-04T05:17:21.175-08:002010-02-04T05:17:21.175-08:00Hi,
Could you please do the same call flows for t...Hi,<br /><br />Could you please do the same call flows for the Dedicated bearer establishment including Authentication + security<br /><br />ThanksAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-1329449351744515518.post-17737810019254616292010-02-04T01:51:03.861-08:002010-02-04T01:51:03.861-08:00You are right. I couldnt fit in two arrows because...You are right. I couldnt fit in two arrows because of lack of space. :-) <br /><br />Hence displayed request and response with single two way arrow.Santosh Dornalhttps://www.blogger.com/profile/08888256274707899999noreply@blogger.comtag:blogger.com,1999:blog-1329449351744515518.post-45527777354951213632010-02-04T01:14:03.838-08:002010-02-04T01:14:03.838-08:00Another comment about PMIP from the SGW during UE ...Another comment about PMIP from the SGW during UE initial attach: you have only 1 arrow for the Bind Update Update/Ack to the SGW.<br />You should have two messages, at least: the Bind Update first, then the Binding Ack.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-1329449351744515518.post-27263724665905717422010-02-03T02:10:36.623-08:002010-02-03T02:10:36.623-08:00Cool blog as for me. I'd like to read somethin...Cool blog as for me. I'd like to read something more concerning this topic. The only thing your blog misses is a few pics of any devices.<br />Nickolas Karver<br /><a href="http://www.jammer-store.com/" rel="nofollow">Cell jammer</a>Anonymousnoreply@blogger.com