Tài liệu GSM Switching, Services and Protocols P10 doc
Tài liệu GSM Switching, Services and Protocols P10 doc
... International operation of network management
10
GSM Switching, Services and Protocols: Second Edition. Jo
È
rg Eberspa
È
cher,
Hans-Jo
È
rg Vo
È
gel and Christian Bettstetter
Copyright q 2001 John ... probability, and availability, and it can also be characterized with nontech-
nical criteria like ease of operation and comfort of subscriber access or even hot-line and
supp...
Tài liệu GSM Switching, Services and Protocols P3 docx
... network (e.g. the
Integrated Services Digital Network,ISDN [7]) are handled by a dedicated Gateway
3
Figure 3.1: GSM system hierarchy
GSM Switching, Services and Protocols: Second Edition. Jo
È
rg ... authentication and user data encryp-
tion based on the subscriber identity IMSI and secret keys. Beyond that,the SIM can store
short messages and charging information ,and it...
Tài liệu GSM Switching, Services and Protocols P5 docx
... connection that is specially treated according to
5
GSM Switching, Services and Protocols: Second Edition. Jo
È
rg Eberspa
È
cher,
Hans-Jo
È
rg Vo
È
gel and Christian Bettstetter
Copyright q 2001 John ... inputs for the handover and power control
algorithms.
The measurement objects are on the one hand the uplink and downlink of the current
channel (TCH or SDCCH), and on the o...
Tài liệu GSM Switching, Services and Protocols P6 doc
... elements of GSM transmission chain on the physical layer at the air interface
GSM Switching, Services and Protocols: Second Edition. Jo
È
rg Eberspa
È
cher,
Hans-Jo
È
rg Vo
È
gel and Christian ... security and data protection, are gaining enormous importance in
modern digital systems [17]. GSM therefore introduced powerful algorithms and encryp-
tion techniques. The various...
Tài liệu GSM Switching, Services and Protocols P12 docx
... more ef®cient way and simplify the access to external data
networks.
11
GSM Switching, Services and Protocols: Second Edition. Jo
È
rg Eberspa
È
cher,
Hans-Jo
È
rg Vo
È
gel and Christian Bettstetter
Copyright ... (and vice versa), whereas in conventional GSM the scope is only between MS and
BTS/BSC.
As in GSM ciphering, the algorithm A8 generates the Cipher Key Kc from the...
Tài liệu GSM switching services and protocols P2 doc
... Simpli®ed two-path model of radio propagation
GSM Switching, Services and Protocols: Second Edition. Jo
È
rg Eberspa
È
cher,
Hans-Jo
È
rg Vo
È
gel and Christian Bettstetter
Copyright q 2001 John ... multiple of its original bandwidth. Typically, spreading factors are between 10 and
1000; they generate a broadband signal for transmission from the narrowband signal, and
this is l...
Tài liệu GSM switching services and protocols P3 docx
... network (e.g. the
Integrated Services Digital Network, ISDN [7]) are handled by a dedicated Gateway
3
Figure 3.1: GSM system hierarchy
GSM Switching, Services and Protocols: Second Edition. Jo
È
rg ... station.
3.3.4 Operation and Maintenance (OMSS)
3.3.4.1 Network Monitoring and Maintenance
The ongoing network operation is controlled and maintained by the Operation and M...
Tài liệu GSM Switching, Services and Protocols P1 pdf
... currently staying and has access to the network. There, the same
communication services can be used as at home, limited only by the properties of the
1
GSM Switching, Services and Protocols: Second ... characteristics and the cellular principle. The understanding of duplex and multi-
ple access schemes serves as the basis for understanding GSM technology. Chapter 3
introduc...
Tài liệu GSM Switching, Services and Protocols P2 pdf
... Simpli®ed two-path model of radio propagation
GSM Switching, Services and Protocols: Second Edition. Jo
È
rg Eberspa
È
cher,
Hans-Jo
È
rg Vo
È
gel and Christian Bettstetter
Copyright q 2001 John ... multiple of its original bandwidth. Typically, spreading factors are between 10 and
1000; they generate a broadband signal for transmission from the narrowband signal, and
this is l...
Tài liệu GSM Switching, Services and Protocols P4 ppt
... Supplementary services are complementing the control and
modi®cation of extended services and are only usable in connection with a telecommuni-
cation service.
4
Figure 4.1: Bearer and teleservices
GSM Switching, ... terminals
tied to telephone lines. GSM services are therefore divided just like ISDN services into
three categories: bearer services, teleservices, and sup...
Từ khóa: