9.Call Process | Communication | Telecommunications

Please download to get full document.

View again

of 32
All materials on our website are shared by users. If you have any questions about copyright issues, please report us to resolve them. We are always happy to assist you.
Information Report
Category:

Documents

Published:

Views: 10 | Pages: 32

Extension: PPT | Download: 0

Share
Related documents
Description
Call Processs..
Transcript
  Call Process  Introduction Though basically similar, the call process of mobile subscribers and that of ordinary fixed subscribers are different in the following aspects: ã Before a mobile subscriber srcinates a call, he should first input the number, ensure that no modification is needed, and then send the call. ã Before the number is sent out and the call is connected, there is some additional information that should be transferred between mobile stations (! and the networ#. !uch operations are automatically performed by the e$uipment, with no need for user interference, but it results in a certain delay.  Initiali%ation (& ãInitialization is a random access process. It starts from MS which sends a “channel request” message on RAC. ãAfter recei!ing this message #$S notifies #SC and attaches #$S%s estimation of the transmission dela& '$A( from this MS to #$S and the cause for the current access. ã#SC will select an idle and dedicated channel S)CC to notif& #$S to acti!ate it according to the access cause and the current information.  Initiali%ation (' ãAccess causes mainl& include* location updating+ response to a paging call+ and su,scri,er ser!ice application such as a call sending one short message.ãAfter #$S completes the acti!iation of the designated channel #SC sends the “immediate allocation”message on A-C !ia #$S including the description of the S)CC channel assigned ,& #SC to MS $A the maimum initialization transmission power and the access random reference !alue.
Recommended
View more...
We Need Your Support
Thank you for visiting our website and your interest in our free products and services. We are nonprofit website to share and download documents. To the running of this website, we need your help to support us.

Thanks to everyone for your continued support.

No, Thanks