TIA-41 790-E-2004 Part 790 Wireless Radiotelecommunications Intersystem Operations C Annexes《Part 790 无绳无线电通信内部系统操作》.pdf

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1、 TIA-41.790-E (Revision of TIA-41.D) October 2010 Part 790: Wireless Radiotelecommunications Intersystem Operations Annexes ANSI/TIA-41.790-E-2004 APPROVED: APRIL 20, 2004 REAFFIRMATION: SEPTEMBER 1, 2010 NOTICE TIA Engineering Standards and Publications are designed to serve the public interest thr

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6、before its use. (From Standards Proposal No. 3-3590.790-RV5, formulated under the cognizance of the TIA TR-45.2 Subcommittee on Wireless Intersystem Technology.) Published by TELECOMMUNICATIONS INDUSTRY ASSOCIATION 2002 Standards and Technology Department 2500 Wilson Boulevard Arlington, VA 22201 U.

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17、ATION, OR THE LIKE), WHETHER BASED UPON BREACH OF CONTRACT, BREACH OF WARRANTY, TORT (INCLUDING NEGLIGENCE), PRODUCT LIABILITY OR OTHERWISE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. THE FOREGOING NEGATION OF DAMAGES IS A FUNDAMENTAL ELEMENT OF THE USE OF THE CONTENTS HEREOF, AND THESE CON

18、TENTS WOULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. TIA-41-790-E123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960790-1 IntroductionPART 790Annex A: Call Delivery Using the BCSMNote: The content of this annex has be790n changed f

19、orm IS-771 annex B.This annex is informative and is not considered part of this standard.This annex describes how MS-to-MS call delivery can be modeled using the WIN Basic Call StateModels (BCSMs). The message sequences shown in this annex are as in TIA-41. A.1 IntroductionThis annex illustrates how

20、 the BCSMs interact with TIA-41 signaling to complete an MS-to-MS callinvolving two WIN subscribers. Not all of the information exchanges that take place between half-call segments in the same WIN MSC are shown. Details of trunk signaling have been minimized.This annex uses extended signaling messag

21、e flow diagrams to illustrate how TIA-41 messages mayinteract with the BCSMs. The following conventions are used in the BCSM and TIA-41 interactiondiagrams:Mapping TIA-41 signaling to a BCSM should not be viewed as a specific requirement forimplementation.A.2 ScopeThis Annex describes the following

22、call delivery scenarios:a. normal MS - MS call delivery, with both MSs served by the same MSC (see Figure 4 )b. normal MS - MS call delivery, with MSs served by different Serving MSCs (see Figure 5)These scenarios provide guidance on the intended functioning of the call model with respect toTIA/EIA-

23、41 intersystem operations.A.3 TIA-41 Signaling for MS-MS CallFigures 1 and 2 below illustrate the basic TIA-41 information flows to support an MS-to-MS call.Both the calling and called parties are WIN subscribers whose trigger profile information is sent totheir respective serving systems upon regis

24、tration confirmation. This is shown for the calling partyin Figure 1. The subscriber profile will cause a trigger to be armed in the O-BCSM that causes theMSC/SSF to launch a WIN query (ORREQ) during call setup. Associated with the armed trigger isthe address to which the ORREQ is to be sent. (The O

25、RREQ is typically sent to an SCP, but theORREQ may also be sent to the subscribers HLR.) The SCP performs service logic processing andANS-41Intersystem OperationInternal Network Entity IndicationTrunk SignalingTIA-41-790-ETIA-41 Signaling for MS-MS Call12345678910111213141516171819202122232425262728

26、2930313233343536373839404142434445464748495051525354555657585960790-2returns information in the orreq instructing the MSC to proceed with the call. Note that servicelogic processing may involve the exchange of additional messages, such as SRFDIR, between theORREQ and the orreq; these are not illustr

27、ated.Figure 1 TIA-41 Registration and “Call From” SignalingCall setup continues, and the call is delivered to the Originating MSC. The message sequence inFigure 2 illustrates the subsequent message exchange that may occur for a WIN subscriber, withoptional messages shown in the shaded boxes.On deter

28、mining the call is to a mobile subscriber, the MSC/SSF sends a LOCREQ to the HLR, withthe TRANSCAP and WINCAP parameters set to indicate the capabilities of the MSC/SSF, such aswhether the MSC/SSF is capable of handling WIN triggers and if it is capable of sending asubsequent LOCREQ message. If a se

29、rvice is to be executed in an SCP, the HLR may send aSERVREQ message requesting the SCP to execute a service. Upon receipt of the servreq, theHLR may send a ROUTREQ to obtain a TLDN. A second SERVREQ may then be sent to the SCPfor further service processing after the routreq is received. The locreq

30、is then returned to theMSC/SSF. Note that this locreq may contain destination information, trigger profile information,or both. In the case where the locreq has returned trigger profile information only, this is used to armdetection points in the BCSM at the O-MSC. Upon encountering an armed detecti

31、on point andsatisfying associated criteria, the MSC/SSF sends an ANLYZD to the Network Entity (NE)address associated with the trigger, typically an SCP, to invoke a service. In this example,instructions returned in the anlyzd provide information to proceed with call processing. Uponencountering the

32、Location trigger and satisfying the conditions, a second LOCREQ is sent toMS HLR SCPServing SystemMSC VLRorreq RoutingInfocall setupREGNOTregnot Profile, TRIGADDRLISTregnot Profile, TRIGADDRLISTORREQ MIN, TRIGTYPE, TRANSCAP, WINCAP, DGTSDIALMS originationRNT RNTabcdefghREGNOTORTTIA-41-790-E123456789

33、101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960790-3 TIA-41 Signaling for MS-MS Callthe HLR with the TRIGTYPE parameter set to indicate the Location trigger was encounteredand thereby requesting routing information. The HLR proceeds to obtain de

34、stinationinformation and to pass this information back to the MSC/SSF in the second locreq. In the case where locreq has returned both trigger profile information and destinationinformation together, both pieces of information are used by the MSC/SSF. The triggerinformation is used to arm detection

35、points in the BCSM at the O-MSC later in the call; thedestination information is used to deliver the call.After call setup, call processing continues, and further calls to service logic are performed whenarmed detection points are encountered and appropriate criteria are satisfied.TIA-41-790-ENormal

36、 Intrasystem Call Delivery123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960790-4Figure 2 TIA-41 “Call To” SignalingA.4 Normal Intrasystem Call DeliveryFor this scenario, the calling and called MSs are in the same MSC. The Originating MSC

37、determinesthat the destination is an MS and proceeds with normal TIA-41 call delivery.MSC SCP VLRServing SystemOriginating SystemMSCHLRLOCREQ DGTSDIAL, TRIGTYPESERVREQ SRVIDservreq ACTCODElocreq TRIGADDRLISTROUTREQ MINroutreq TLDNRRTroutreq TLDNRRTROUTREQ MINANLYZD TRIGTYPEcall setupROUTREQ MINroutr

38、eq TLDNlocreq TERMLISTroutreq TLDNROUTREQ MINRRT RRTLOCREQ DGTSDIAL, TRIGTYPEANZTLRTLRTijklbcdefghnopqrstcall originationTLDNATSVRTSVRTSERVREQ SRVIDservreq ACTCODETLDNATmaanlyzd ACTCODETIA-41-790-E1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556

39、57585960790-5 Normal Intrasystem Call DeliveryA.4.1 TIA-41 Signaling for Normal Intrasystem Call DeliveryCD Invocation to an idle, Local MS in Chapter 3 of TIA-41-E describes call delivery invocation toan idle MS that is served by the MSC where the call originates.A.4.2 Call SegmentsThe following fi

40、gure illustrates the call segments for this intrasystem call delivery scenario.Figure 3 Call Segments for Intrasystem MS to MS Call A.4.3 BCSM and TIA-41 InteractionsFigure 4 illustrates the BCSM and TIA-41 interactions for normal call delivery invocation to an idleMS that is served by the MSC where

41、 the call originates.Originating MSCCallingMS(MS1)Called MS(MS2)T-BCSM1O-BCSM1TIA-41-790-ENormal Intrasystem Call Delivery123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960790-6Figure 4 BCSMs for Normal Intrasystem Call Delivery (1 of 2)Or

42、iginating / Serving SystemHLRabcdhMSCAuth_Call_LOCREQ DGTSDIAL ecalloriginatiMS 1 MS 2Send_CallPagePagegfT_AlertingO_AlertingT_ActiveO_Activealertingansweransweranswercall setuplocreq TERMLIST LRTTIA-41-790-E12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505

43、1525354555657585960790-7 Normal Intersystem Call DeliveryFigure 4 BCSMs for Normal Intrasystem Call Delivery (2 of 2)Notes:a. MS 1 sends an indication that it wishes to originate a call. (Dialed digits are included in thecall origination indication.) The MSC assigns a radio channel to MS 1. The MSC

44、authorizesthe call origination and arms originating triggers for the subscriber. MSC call processing(via O-BCSM1) progresses through the Collect_Information PIC and the dialed digits areanalyzed.b. The MSC determines that this call is to a MS served by this MSC and selects an internalroute (internal

45、 to the MSC) for the call. The originating MSC initiates terminating callprocessing (via instantiation of T-BCSM1) on behalf of that MS (MS 2).c. The Mobile_Termination trigger is detected at the Termination_Attempt DP. The MSCsends a LOCREQ to the HLR.d. The HLR determines that the subscriber is cu

46、rrently served by the Originating MSC, andsends a locreq to the Originating MSC. The TERMLIST parameter is set to indicateLocal Termination.e. The Originating MSC, recognizing itself as the Serving MSC and that the call is a localtermination, initiates procedures to set up the call to the MS. It det

47、ermines that the MStermination is authorized.f. The MSC pages MS 2. MS 2 responds and is assigned to a voice channel.g. MS 2 is alerted. T-BCSM1transits to the T_Alerting PIC and notifies O-BCSM1.O BCSM1transits to the O_Alerting PIC.h. MS 2 answers the call. T-BCSM1transits to the T_Active PIC and

48、notifies O-BCSM1.O BCSM1transits to the O_Active PIC.i. MS 1 disconnects. O-BCSM1transits to the O_Null PIC and notifies T-BCSM1. T-BCSM1transits to the T_Null PIC.A.5 Normal Intersystem Call DeliveryFor this scenario, the calling and called MSs are in different MSCs. The Originating MSCdetermines t

49、hat the destination is an MS and proceeds with normal TIA-41 call delivery.ireleasereleasereleaseOriginating / Serving SystemMSCMS 1 MS 2T_ActiveO_ActiveTIA-41-790-ENormal Intersystem Call Delivery123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960790-8A.5.4 TIA-41 Signaling for Normal Intersystem Call DeliveryCD Invocation to an Idle MS or Another MSC in Chapter 3 of TIA-41 describes call deliveryinvocation to an idle MS that is outside the serving area of the MSC where