Cell Telephones (The cutting edge)

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Versatile Computing. Most serious issue with Mobile interchanges like the Internet is an excess of ... In Europe this is Universal Mobile Telecommunication Standard (UMTS) ...

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Slide 1

Cell Phones (The people to come) Justin Champion Ext 3273 j.c.champion@staffs.ac.uk Slides accessible at www.soc.staffs.ac.uk/flk1

Slide 2

2.5G + Contents Problem with Mobile figuring Why 2.5G

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Mobile Computing Biggest issue with Mobile correspondences like the Internet is excessively numerous acronyms WSP/B PDC POS CCIR BW UPT BSS MCC FHSS HIPERLAN IFS FIB SNDCP S-SAP WWW MSISD N LAI PDA ATIM CW DVB-T ICMP PSN TTL HEC GIF LAPD CSCW ISO ITU LED CCH CDMA PA ITU-R PDN IEEE IrDA AIDCS CAC HTML CC NDC CCA SNACK IMF JPEG HDTP DPCH HDB HO GWL CC XOR TD-CDMA JDC ISI RTT CTS BCA GTP SIM MMF CEPT SCPAS-TP SFD UBR DPCCH SDM PTP-CLNS RL URI PHS TLLI MOT CU UIM PPP AIB MNC WRC IMT-MC WSP WAP ATM-CL LBR PMA TCH/F M-PNNI HCSAP EMAS EIRP CATV DNS V+D FW CSMA DSL FSK PLL AESA CSMA/CD VC DH HDLC TI RAS MN SDP DVTR CORBA GEO EDTV HMQoS TCH/FS HEO PAD HO-HMPDU SAP SDMA WML EHF HIB FEC FIC TC-HMPDU VDB AID ACT FR PRACH AFS CIF LI PACS RIP Loc AGCH ASA IWF BLIR TR-SAP UDP SCF IMT-FT Cnf ISDN HTTP BPSK TFO ESS RTT TMN MSRN SN PDO GMSC SIG CN HDTV AUS TUSSD CT SMS DFWMAC DHCP BSC KID ROM ETSI ISM QPSK UTRA GRE TM Req DVB-S FPLMTS CCCH ISL MUL DC COFDMOSI AM DVB RTR SEQN COMS RSS PS PM TOS PC DAB PCS LS RSA RRM CN TE IS XML LF SS7 M-NNI HI T-SAP COA VCC PTP CS PTM WMLScript MTSA BLIRCS RR IMSI DAMA RAND MIB GMM PCH RA NSS LIR SH SDT BSSAP SAAL MATM WTLS TIM FT JCT PDTCH GFSK D-AMPS CDM PCM CSD SW UMTS IV PSK STA RIB EMAS-E MSDU TA RFC CLMS IR NMT RLP ACID TINA DQPSK TFI GPRS PACS-UB VHF PT ABR NSA WCAC NTSC EY-PMA TMSI TDT WDP CPU HMPDU SDU PLW DVB-C HAD CSMA/CA ACL MOC MACA Disassoc TDM LAN DPDCH PLMN DLC QAM EIR AuC HID RM DA PLCP CM SNAP LOS CAC VNDC UHF WCMP L2CAP ARIB MSK ECDH TETRA PHY DSDV HA TCH/H ASCII SRES WTA GSN CRC W3C PAL BRAN PSTN MEO MCM CKSN CVSD I-TCP SUMR HSCSD LC RT POTS HDACS TTC ASK FDMA T-TCP VBR-rt LRU BER DIFS BSS PPG HDML EDGE PRMA MSC NA-TDMA BFSK SDTV TCP GMSK MS VPN NAT AMA SCO IMT-DS HF HCPDU USIM TCH/HS DS GPS CGI PLI WIM SDCCH NMAS MCI IMT-TCCPM OFDM TIB ANSI BCCH ASP NFS ITU-T SFN TFTS WMT MHEG ATM NIB RLC WAN SGSN DECT PMD WTAI FCCH FM CAMEL FA COS QoS UE PI TDD SCDMA LMP ARQN DCS VLR SATM VBR-nrt HM ACK SwMI FACCH DCCH LAPDm AK-HCPDU DT-HCPDU WLAN SHF VAD SIFS WLL RA MSC PSF W-CTRL GP FDD UWC BSSGP BCH MT ID SMRIB UTRAN NNI PIFS GGSN HCSDU IMT OMC AAL WTP DCF SCH FCA PDU IN IMT-SC SA PSPDN GERAN GSM EDGE RAN M-UNI DSR TCH MAC RNS BMP OSS W-CDMA SCPS AMES IP WATM SC Auth SEC-SAP MF MS CBR NRL DSMA DBPSK 3GPP HC TDMA ML MTC NAV AP M-TCP MBS PTP-ONS SC UD TSF PDF GSM ADSL UNI LEO MSAP PIN FDM PCF SSL BTSM ISMA VLF OTA ADA SACCH DSSS RACH PUK PPM SAMA MM LAPC IOT PAD RTS Res ICO DTIM HBR CD TLS VBR DVD MSIN HCQoS LA DDIB SS PNNI CIDR DTMF MSC EIT IMEI Codec UP ARQ UN ILR WAE IETF CDV Assoc HP DCA MH CDPD GAP LLC BTS LM B-ISDN HLR M-QoS TPC TV WPAN SI RAL GR WP-CDMA AMPS NIT BLI MPEG VHE PCS CCF

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3G UMTS 2.5 G EDGE GPRS 2 G GSM 2.5G + Where are telephones going Developing from customary gadgets for voice calls Voice calls are close Increased information utilize SMS MMS Video on Demand Location based administrations

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2.5G + Why utilize 2.5G telephones at all The system was not intended to handle information calls Infrastructure must be set up to permit information to move over the system Handsets were not prepared to be utilized with information serious applications Battery life was a thought Processor ability Services to accommodate the new information limits Money for framework The measure of cash put resources into the licenses left next to no for the required overhauls/new base stations

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2.5G + 3G range sell off License demonstrates the span of the range with A being the biggest Part of the closeout principles was another organization in the UK won the License sort "An" Auction shut on the 27 th April 2000

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General Packet Radio Service 2.5G Data Use Today General Packet Radio Service (GPRS) Introduced to permit an expanded information rate over a current GSM foundation! Requires some extra servers and moves up to BS Standard discharged by European Telecommunication Standards Institute (ETSI) in March 1998 To utilize this you require a GPRS empowered gadget GPRS gadgets are in reverse good with GSM

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General Packet Radio Service General Packet Radio Service (GPRS) Features Higher information associations speeds Theoretical Maximum of 171 Kbps Does not consider however Interference Distance from transmitter All GSM stations would need to be devoted to GPRS interchanges Any blunder amendment Device transferring information Actually speeds with conditions considered is hypothetically a greatest of 53.6 Kbps Studies have demonstrated the normal is for the most part around 20 – 40 Kbps Always on Data correspondences No postponement in setting up an information correspondence

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General Packet Radio Service GPRS Devices In the standard there are three sorts of GPRS gadgets A Capable of Simultaneous information exchange and voice interchanges B Automatic exchanging amongst voice and information calls. This should be arranged on the gadget itself C Switching amongst information and voice worked by the gadget client physically. These guidelines are in reverse good with the GSM systems for voice correspondences

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General Packet Radio Service GPRS Relies on the way that Internet interchanges are bursty in nature a lot of information will be gotten and the client will prepare it before asking for more i.e. a website page A solitary voice circuit will from GSM will be broken into littler parts and the GPRS information is sent on this circuit. All information is sent in bundles Data must be broken into little parcels These bundles are re-collected at the goal These parcels include an overhead as the parcel header

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General Packet Radio Service GPRS Channel Breakdown Data Users A = User 1 B = User 2 F = User 3 In this case we have 5 voice calls and 3 clients accepting information

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General Packet Radio Service GPRS Channel Breakdown Continued A channel which is being utilized for GPRS information Can just be shared between different GPRS clients It can not be distributed in that time space for GSM voice calls Even if part of the time opening is accessible The utilization of GPRS will lessen the measure of voice calls that can be made on that phone With enough information calls a phone will get to be pointless for voice guests, which require selective access to the time openings

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General Packet Radio Service GPRS Infrastructure As talked about before GPRS expand upon the GSM systems. Organize components require changing Base stations Requires a product update Base station controller Requires a product redesign New parts require including Serving GPRS Support Node (SGSN) Has VLR usefulness Authorize joined clients Details recorded of information parcels to be charged for Session Management Router for bundles which might be lost amid a handover amid an information call

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General Packet Radio Service GPRS Infrastructure proceeded with Gateway GPRS Support Node (GGSN) Is the association into the GPRS arrange It does all interpretations that territory required Firewall for the system Collates information in regards to the measure of parcels got Potentially later on this will take into consideration contending GGSN's in a system! Free market picking either the least expensive or most solid GGSN! There are 3 sorts of GGSN A – Near Future/Now The GGSN turns out to be its very own piece ISP and gives Internet administrations. The gadgets will be doled out IP address utilizing DHCP. B – Now The SSGN dependably chooses the same GGSN to do the Internet work. The design will be done powerfully and on an impermanent premise C – Future This permits a privately owned business to have its own GGSN, with an encryption key so that exclusive approved gadgets can get entrance. i.e. a VPN into a system, steady email get to and so forth

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General Packet Radio Service

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General Packet Radio Service Packet Control Unit (PCU) Logically discrete yet more often than not part of the Base station controller Responsible for the radio interface of GPRS Deals and courses parcel based correspondences GPRS and SMS messages are sent in GPRS as a part of the typical information directs In GSM they are generally sent by means of the control channels Why This progressions has occurred prepared for the Multimedia Messaging administration Due to the extent of the messages

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2.5G + Data utilize GPRS allows information use in the system Does not have a high throughput Suffers with a high idleness in interchanges ( www.sourceo2.com/O2_Developers/O2_technologies/GPRS/Technical_overview/gprs_latency_factors_diagram.htm , 2004) Average 0.6 Seconds for a ping bundle This can be an issue with video-on-request, internet Games Poor quality parcel blunder checking

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2.5G + Enhanced Data GSM Environment Developed by Erricson for the advantage of the failures in the 3G range barters EDGE works at a hypothetical 384Kbps This implies an organization which lost in the barterings can even now offer a sensible information benefit Companies which put resources into the 3G licenses will likewise profit as the foundation put in for GPRS and EDGE will in any case be utilized with UMTS (3G) Current framework The present Base stations will require another handset and a product move up to permit EDGE transmission This can happen as and when the ordinary BS are being adjusted This considers a more extensive scope than will be accessible in any event at first with the UMTS arrange. Clearly there are still an indistinguishable issues from GPRS in regard that a channel that is utilized for EDGE removes one from a voice call

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2.5G + How does EDGE build the information rate? New Modulation system 8-PSK is utilized to balance information Allows the encoding of 3 bits in every tweak This is the primary motivation behind why it is 3X quicker than GPRS Allow more bits encoded it is additionally more touchy to blunders The recipient/transmitter should be near one another

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2.5G + How does EDGE expand the information rate? Enhanced Error taking care of Packets can be resegmented Quality of flag calcula

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