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What are different types of interfaces used in CDMA? sagitraz 03-June-2008 02:42:09 AMComments www.arcx.com/sites/CDMAvsTDMA.htm Posted by crouse www.freepatentsonline.com/7397773.html Posted by crouse www.tek.com/ir/whitepaper/WP_CDMA.pdf Posted by saqlain231 Um abis a3/a7 a1/a2 a8/a9 a10/a11 Posted by crouse there are the type Um interface between MS and BTS Abis interface between BTS and BSC A3/A7 between BSC's A1/A2 between BSC and MSC A8/A9 between BSC and PCF A10/A11 between PCF and PDSN Posted by waqasahmad MOBILE TO LAND SEQUENCE: 1.)The subscriber pressing the send key initiates a Channel Request message from the MS to the BSS. This is followed by the assignment of a dedicated control channel by the BSS and the establishment of the signalling link between the MS and BSS (SABM-Set Asynchronous Balanced Mode). 2.)The message Request for Service is passed to the MSC which relays it to the VLR. The VLR will carry out the authentication process if the MS has been previously registered on this VLR - if not, the VLR will have to obtain authentication parameters from HLR. The diagram assumes the MS was previously registered on this VLR. 3.)Subscriber authentication (optional) takes place using authentication messages and encryption algorithms and, if successful the C all setup can continue. If ciphering is to be used this is initiated at this time as the setup message contains sensitive information. 4.)The message "Set Up" is sent by the MS to the MSC accompanied by the call information (type of call, and number being called etc.). The message is forwarded from the MSC to the VLR. 5.)The MSC may initiate the MS IMEI check (is the MS stolen? etc). Note that this check may occur later in the message sequence. 6.)In response to the message ``Set Up" (sent at step 4), the VLR sends the message "Complete Call" to the MSC , which notifies the MS with "Call Proceeding". 7.)The MSC then assigns a traffic channel to the BS S ("Assignment Command"), which in turn assigns an air interface traffic channel. The MS responds to the BS S (which responds in turn to the MSC ) with "Assignment Complete". 8.)An "Initial and Final Address Message (IFAM)" is sent to the PSTN. Ring tone is applied at the MS in response to ``Alerting", which the MSC sends to the MS when the PSTN responds with an ``Address C omplete Message (ACM)". 9.)When answered ("Answer (ANS)" from the PSTN), the message "Connect" is forwarded to the MS by the MSC , stopping the MS ring tone. The MSC then connects the GSM traffic channel to the PSTN circuit, thus completing the end to end traffic connection. Posted by jahangir1983 MOBILE TO LAND SEQUENCE: 1.)The subscriber pressing the send key initiates a Channel Request message from the MS to the BSS. This is followed by the assignment of a dedicated control channel by the BSS and the establishment of the signalling link between the MS and BSS (SABM-Set Asynchronous Balanced Mode). 2.)The message Request for Service is passed to the MSC which relays it to the VLR. The VLR will carry out the authentication process if the MS has been previously registered on this VLR - if not, the VLR will have to obtain authentication parameters from HLR. The diagram assumes the MS was previously registered on this VLR. 3.)Subscriber authentication (optional) takes place using authentication messages and encryption algorithms and, if successful the C all setup can continue. If ciphering is to be used this is initiated at this time as the setup message contains sensitive information. 4.)The message "Set Up" is sent by the MS to the MSC accompanied by the call information (type of call, and number being called etc.). The message is forwarded from the MSC to the VLR. 5.)The MSC may initiate the MS IMEI check (is the MS stolen? etc). Note that this check may occur later in the message sequence. 6.)In response to the message ``Set Up" (sent at step 4), the VLR sends the message "Complete Call" to the MSC , which notifies the MS with "Call Proceeding". 7.)The MSC then assigns a traffic channel to the BS S ("Assignment Command"), which in turn assigns an air interface traffic channel. The MS responds to the BS S (which responds in turn to the MSC ) with "Assignment Complete". 8.)An "Initial and Final Address Message (IFAM)" is sent to the PSTN. Ring tone is applied at the MS in response to ``Alerting", which the MSC sends to the MS when the PSTN responds with an ``Address C omplete Message (ACM)". 9.)When answered ("Answer (ANS)" from the PSTN), the message "Connect" is forwarded to the MS by the MSC , stopping the MS ring tone. The MSC then connects the GSM traffic channel to the PSTN circuit, thus completing the end to end traffic connection. Posted by jahangir1983 MOBILE TO LAND SEQUENCE: 1.)The subscriber pressing the send key initiates a Channel Request message from the MS to the BSS. This is followed by the assignment of a dedicated control channel by the BSS and the establishment of the signalling link between the MS and BSS (SABM-Set Asynchronous Balanced Mode). 2.)The message Request for Service is passed to the MSC which relays it to the VLR. The VLR will carry out the authentication process if the MS has been previously registered on this VLR - if not, the VLR will have to obtain authentication parameters from HLR. The diagram assumes the MS was previously registered on this VLR. 3.)Subscriber authentication (optional) takes place using authentication messages and encryption algorithms and, if successful the C all setup can continue. If ciphering is to be used this is initiated at this time as the setup message contains sensitive information. 4.)The message "Set Up" is sent by the MS to the MSC accompanied by the call information (type of call, and number being called etc.). The message is forwarded from the MSC to the VLR. 5.)The MSC may initiate the MS IMEI check (is the MS stolen? etc). Note that this check may occur later in the message sequence. 6.)In response to the message ``Set Up" (sent at step 4), the VLR sends the message "Complete Call" to the MSC , which notifies the MS with "Call Proceeding". 7.)The MSC then assigns a traffic channel to the BS S ("Assignment Command"), which in turn assigns an air interface traffic channel. The MS responds to the BS S (which responds in turn to the MSC ) with "Assignment Complete". 8.)An "Initial and Final Address Message (IFAM)" is sent to the PSTN. Ring tone is applied at the MS in response to ``Alerting", which the MSC sends to the MS when the PSTN responds with an ``Address C omplete Message (ACM)". 9.)When answered ("Answer (ANS)" from the PSTN), the message "Connect" is forwarded to the MS by the MSC , stopping the MS ring tone. The MSC then connects the GSM traffic channel to the PSTN circuit, thus completing the end to end traffic connection. Posted by jahangir1983 Same answer : Um abis a3/a7 a1/a2 a8/a9 a10/a11 Posted by waqqas1 Um,abis,a3/a7,a1/a2,a8/a9,a10/a11 Posted by Hash007 |
Posted: 14-November-2008 01:23:21 AM By: kparikh Following are the interfaces used in CDMA: Um interface between MS and BTS Abis interface between BTS and BSC A3/A7 between BSC's A1/A2 between BSC and MSC A8/A9 between BSC and PCF A10/A11 between PCF and PDSN Here,A2,A7,A9 and A11 are used for signalling and A3,A1,A8,A10 are used for traffic. | |
Posted: 22-November-2008 02:50:36 AM By: Hash007 Um,abis,a3/a7,a1/a2,a8/a9,a10/a11 | |
Posted: 25-December-2008 10:08:02 AM By: waqqas1 Same answer : Um abis a3/a7 a1/a2 a8/a9 a10/a11 | |
Posted: 31-January-2009 12:13:37 PM By: jahangir1983 MOBILE TO LAND SEQUENCE: 1.)The subscriber pressing the send key initiates a Channel Request message from the MS to the BSS. This is followed by the assignment of a dedicated control channel by the BSS and the establishment of the signalling link between the MS and BSS (SABM-Set Asynchronous Balanced Mode). 2.)The message Request for Service is passed to the MSC which relays it to the VLR. The VLR will carry out the authentication process if the MS has been previously registered on this VLR - if not, the VLR will have to obtain authentication parameters from HLR. The diagram assumes the MS was previously registered on this VLR. 3.)Subscriber authentication (optional) takes place using authentication messages and encryption algorithms and, if successful the C all setup can continue. If ciphering is to be used this is initiated at this time as the setup message contains sensitive information. 4.)The message "Set Up" is sent by the MS to the MSC accompanied by the call information (type of call, and number being called etc.). The message is forwarded from the MSC to the VLR. 5.)The MSC may initiate the MS IMEI check (is the MS stolen? etc). Note that this check may occur later in the message sequence. 6.)In response to the message ``Set Up" (sent at step 4), the VLR sends the message "Complete Call" to the MSC , which notifies the MS with "Call Proceeding". 7.)The MSC then assigns a traffic channel to the BS S ("Assignment Command"), which in turn assigns an air interface traffic channel. The MS responds to the BS S (which responds in turn to the MSC ) with "Assignment Complete". 8.)An "Initial and Final Address Message (IFAM)" is sent to the PSTN. Ring tone is applied at the MS in response to ``Alerting", which the MSC sends to the MS when the PSTN responds with an ``Address C omplete Message (ACM)". 9.)When answered ("Answer (ANS)" from the PSTN), the message "Connect" is forwarded to the MS by the MSC , stopping the MS ring tone. The MSC then connects the GSM traffic channel to the PSTN circuit, thus completing the end to end traffic connection. | |
Posted: 31-January-2009 12:16:57 PM By: jahangir1983 MOBILE TO LAND SEQUENCE: 1.)The subscriber pressing the send key initiates a Channel Request message from the MS to the BSS. This is followed by the assignment of a dedicated control channel by the BSS and the establishment of the signalling link between the MS and BSS (SABM-Set Asynchronous Balanced Mode). 2.)The message Request for Service is passed to the MSC which relays it to the VLR. The VLR will carry out the authentication process if the MS has been previously registered on this VLR - if not, the VLR will have to obtain authentication parameters from HLR. The diagram assumes the MS was previously registered on this VLR. 3.)Subscriber authentication (optional) takes place using authentication messages and encryption algorithms and, if successful the C all setup can continue. If ciphering is to be used this is initiated at this time as the setup message contains sensitive information. 4.)The message "Set Up" is sent by the MS to the MSC accompanied by the call information (type of call, and number being called etc.). The message is forwarded from the MSC to the VLR. 5.)The MSC may initiate the MS IMEI check (is the MS stolen? etc). Note that this check may occur later in the message sequence. 6.)In response to the message ``Set Up" (sent at step 4), the VLR sends the message "Complete Call" to the MSC , which notifies the MS with "Call Proceeding". 7.)The MSC then assigns a traffic channel to the BS S ("Assignment Command"), which in turn assigns an air interface traffic channel. The MS responds to the BS S (which responds in turn to the MSC ) with "Assignment Complete". 8.)An "Initial and Final Address Message (IFAM)" is sent to the PSTN. Ring tone is applied at the MS in response to ``Alerting", which the MSC sends to the MS when the PSTN responds with an ``Address C omplete Message (ACM)". 9.)When answered ("Answer (ANS)" from the PSTN), the message "Connect" is forwarded to the MS by the MSC , stopping the MS ring tone. The MSC then connects the GSM traffic channel to the PSTN circuit, thus completing the end to end traffic connection. | |
Posted: 31-January-2009 12:18:03 PM By: jahangir1983 MOBILE TO LAND SEQUENCE: 1.)The subscriber pressing the send key initiates a Channel Request message from the MS to the BSS. This is followed by the assignment of a dedicated control channel by the BSS and the establishment of the signalling link between the MS and BSS (SABM-Set Asynchronous Balanced Mode). 2.)The message Request for Service is passed to the MSC which relays it to the VLR. The VLR will carry out the authentication process if the MS has been previously registered on this VLR - if not, the VLR will have to obtain authentication parameters from HLR. The diagram assumes the MS was previously registered on this VLR. 3.)Subscriber authentication (optional) takes place using authentication messages and encryption algorithms and, if successful the C all setup can continue. If ciphering is to be used this is initiated at this time as the setup message contains sensitive information. 4.)The message "Set Up" is sent by the MS to the MSC accompanied by the call information (type of call, and number being called etc.). The message is forwarded from the MSC to the VLR. 5.)The MSC may initiate the MS IMEI check (is the MS stolen? etc). Note that this check may occur later in the message sequence. 6.)In response to the message ``Set Up" (sent at step 4), the VLR sends the message "Complete Call" to the MSC , which notifies the MS with "Call Proceeding". 7.)The MSC then assigns a traffic channel to the BS S ("Assignment Command"), which in turn assigns an air interface traffic channel. The MS responds to the BS S (which responds in turn to the MSC ) with "Assignment Complete". 8.)An "Initial and Final Address Message (IFAM)" is sent to the PSTN. Ring tone is applied at the MS in response to ``Alerting", which the MSC sends to the MS when the PSTN responds with an ``Address C omplete Message (ACM)". 9.)When answered ("Answer (ANS)" from the PSTN), the message "Connect" is forwarded to the MS by the MSC , stopping the MS ring tone. The MSC then connects the GSM traffic channel to the PSTN circuit, thus completing the end to end traffic connection. | |
Posted: 31-January-2009 12:42:42 PM By: waqasahmad there are the type Um interface between MS and BTS Abis interface between BTS and BSC A3/A7 between BSC's A1/A2 between BSC and MSC A8/A9 between BSC and PCF A10/A11 between PCF and PDSN | |
Posted: 05-May-2009 04:45:13 AM By: crouse Um abis a3/a7 a1/a2 a8/a9 a10/a11 | |
Posted: 19-June-2009 01:10:44 PM By: saqlain231 www.tek.com/ir/whitepaper/WP_CDMA.pdf | |
Posted: 08-September-2009 02:29:50 PM By: crouse www.freepatentsonline.com/7397773.html | |
Posted: 08-September-2009 02:38:47 PM By: crouse www.arcx.com/sites/CDMAvsTDMA.htm |