, 35 4.1. Paramètres de simulation 35 4.2. Performances de l'interface Abis Dynamique à forte charge 39 4.3. Performances de l'interface Abis Dynamique à charge opérationnelle, p.46
, 54 3.2. Allocation de ressources sur l'interface radio 56 3.3. Fiabilisation de la transmission sur l'interface radio, p.64
, 70 4.1. Différentes approches pour le transfert inter-cellulaire, p.82
, 199 1.10. Modélisation de
, 221 1. Handover inter, p.221
, )=n) De même, l'équipement n°2 a transmis avec succès n trames et en a reçu m. L'équipement n°1 va alors transmettre successivement trois trames (N(S)=m, m+1 et m+2) tandis que le n°2 va en transmettre une seule (N(S)=n). A chaque nouvelle trame transmise, l'émetteur incrémente V(S), Lorsque le récepteur reçoit la trame numérotée telle que N(S)=V(R), il affecte à V(R) la valeur de la première trame LLC qui
, S)=m+3, l'équipement n°2 note la bonne réception de la trame N(S)=n en incrémentant la variable V(A) De même, à la réception de la trame N(S)=n+1, l'équipement n°1 enregistre la bonne réception des trames N(S)=m à N(S)
, le récepteur n°2 devrait normalement ré-émettre la trame N(S)=m+4 puis continuer normalement sa transmission en attendant un nouvel acquittement . Dans l'échange présenté ici
, S)=n+3 au niveau de l'équipement 2 permet d'acquitter la bonne réception des trames N(S)=m+5 à m+8. Si cet acquittement n'était pas arrivé, il y aurait eu expiration successive des temporisateur T201 associés à ces trames, ce qui aurait entraîné leur réémission. La transaction devrait alors se poursuivre ainsi : l'équipement 1
, 73;rport;branch=z9hG4bK89c20349000000264492695a000073- fa00000038..Content-Length: 337, pp.2-66462515062
, From: "unknown"<sip:test2@sip.enst.- fr>;tag=66462515062To: <sip:0616771297@137.194.3.73>;tag=as5448b713Contact: <sip:0616771297@137.194.16.250>..Proxy-Authenticate: Digest realm="asterisk, SIP/2.0 407 Proxy Authentication RequiredCall-ID: 878868ED-AD65- 4A74-9D66-37DAB3FC72F6@137.194.3.73..CSeq: 1 INVITE..User-Agent: Asterisk PBX..Allow: INVITE:5060>..Call-ID: 878868ED-AD65-4A74-9D66-37- DAB3FC72F6@137.194.3.73..Content-Type: application/sdp..CSeq: 2 IN- VITE..From: "unknown"<sip:test2@sip.enst.fr>;tag=66462515062..Max-For- wards: 70..To: <sip:0616771297@137.194.3.73>..User-Agent
, Contact: <sip:0616771297@137.194.16.250>, To: <sip:0616771297@137.194.3.73>..Call-ID: 878868ED-AD65-4A74-9D66-37- DAB3FC72F6@137.194.3.73..CSeq: 2 INVITE..User-Agent: Asterisk PBX..Allow: INVITE-37DAB3FC72F6@137.194.3.73..CSeq: 2 INVITE..User-Agent: Asterisk PBX..Allow: INVITEContact: <sip:0616771297@137.194.16.250>..Content-Type: application/sdp ..Content-Length: 265
, Content-Length: 337..Contact: <sip:test1@137.194.3.76:5060>..Call-ID: F5337719-913E-41CD-8381- 3772340A7DAF@137.194.36.169, p.3
, unknown"<sip:test1@sip.enst.fr>;tag=1321520914To: <sip:0609365123@137.194.36.169>;tag=as3221e3e1Call-ID: F5337719- 913E-41CD-8381-3772340A7DAF@137.194.36.169..CSeq: 1 INVITEContact: <sip:0609365123@137.194.16.250>..Proxy-Au- thenticate: Digest realm="asterisk", nonce="1166f92c"..Content-Length: 0.... 3. ACK ACK sip:0609365123@137.194.36.169 SIP/2.0..Via: SIP/2.0/UDP 137.194.3.76;rport;branch=z9hG4bK89c224a90000004e4490334100005c3200000 0f0Content-Length: 0..Call-ID: F5337719-913E-41CD-8381-3772340A7- DAF@137, SIP/2.0 407 Proxy Authentication RequiredContent-Type: application/sdp..CSeq: 2 INVITE..From: "unknown"<sip:test1@sip.enst.fr>;tag=1321520914..Max- Forwards: 70..To: <sip:0609365123@137.194.36.169>..User-Agent: SJ- phone/1.60.289a (SJ Labs)..Proxy-Authorization: Digest username="test1",realm="asterisk, pp.97-98
, Contact: <sip:0609365123@137.194.16.250>, To: <sip:0609365123@137.194.36.169>..Call-ID: F5337719-913E-41CD-8381- 3772340A7DAF@137.194.36.169..CSeq: 2 INVITE..User-Agent: Asterisk PBX..Allow: INVITEContact: <sip:0609365123@137.194.16.250>..Content- Type: application/sdp..Content-Length: 265
, Content-Length: 0..Call-ID: F5337719-913E-41CD-8381-3772340A7- DAF@137.194.36.169CSeq: 2 ACK..From: "unknown"<sip:test1@sip.enst.- fr>;tag=1321520914Max-Forwards: 70.To: <sip:0609365123@137.194.36.169>;tag=as4962e6adUser-Agent: SJphone/1.60.289a (SJ Labs)From: <sip:0609365123@137.194.36.169>;tag=as4962e6ad..To: "unknown"<sip:test1@sip.enst.fr>;tag=1321520914Max-Forwards: 70..Content-Length: 0250:5060;rport=5060;recei- ved=137.194.16.250;branch=z9hG4bK01391e4a..Content-Length: 0..Call-ID: F5337719-913E-41CD Evaluation des performances de l'Abis Dynamique pour E-GPRS, CFIP'05 Signaling Compression for ROHC <draft-price-rohc-signaling-epic- 00 Traffic Modeling and Characterization for UMTS Networks, Contact: <sip:0609365123@137.194.16.250>..Call-ID: F5337719-913E-41CD-8381- 3772340A7DAF@137.194.36.169..CSeq: 102 BYE..User-Agent: Asterisk PBX.Baltzer Mobile Networks and Applications Journal/ Wireless Networks Journal (MONET/WINET) ? Kluwer edition The 3G IP Multimedia Subsystem (IMS): Merging the Internet And the Cellular Worlds février 2006. [Dai03] Nicolas Dailly, Développement en Java d'une Plate-forme Pédagogique GSM / GPRS Talal Achkar Diab, Philippe Martins, Comparison of Eifel and standard versions of TCP over GPRS in the presence of radio link disconnections Proceedings of the I.R.E. Probabilités et Applications, Ecole Nationale des Ponts et Chaussées] [Klem01] A. Klemm, C. Lindemann, and M. Lohmann Globecom, Internet Performance Symposium, pp.237-247, 1978.
, A Universal Algorithm for Sequential Data Compression Compression of Individual Sequences via Variable-Rate Coding A technique for High-Performance Data Compression The GSM system for mobile communications, Qualité de Service dans les Réseaux Mobiles 2GMar03] Philippe Martins, TCP et les réseaux mobilesOye05] Oyedapo Olufemi VIGIE : A learning tool for cellular air interfaces The IPSI BgD Transactions on Internet Research, 1977.
, Notions fondamentales, Pearson Education, Aout Premkumar and A. Chockalingam, Performance of LLC and TCP on GPRS Uplink with RLC Slot Level Retransmission, http://citeseer.nj.nec.com/premku- mar01performance.html Performance Evaluation of Retransmission Mechanism in GPRS Networks, IEEE CIRP : Cellular IP Reservation Protocol, CFIP, 2000.
, Cellular IP: A New Approach to Internet Host Mobility Plate forme pédagogique VIGIE, site internet avec exemple de traces Design and Evaluation of a Handover Decision Strategy for 4th Generation Mobile Network One way transmission time Technical Specification Group Services and System Aspects ; Digital cellular telecommunications system (Phase 2+) General Packet Radio Service (GPRS) Service description ; Stage 2 (Release 1998), septembre 2002 [3GPP 04.60] 3GPP TS 04.60 V8.26.0 ; 3rd Generation Partnership Project; Technical Specification Group GSM/EDGE Radio Access Network ; General Packet Radio Service (GPRS) Mobile Station (MS) -Base Station System (BSS) interface ; Radio Link Control/ Medium Access Control (RLC/MAC) protocol (Release 1999), janvier General Packet Radio Service (GPRS); Mobile Station ? Serving GPRS Support Node (MS-SGSN); Logical Link Control (LLC) layer specification (release 99) Technical Specification Group GSM/EDGE Radio Access Network; Physical layer on the radio path; General description (release 99) Technical Specification Group Core Network, Technical Specification Group GSM EDGE Radio Access Network; Base Station Controller -Base Transceiver Station (BSC -BTS) interface; General aspects Generation Partnership Project ; Technical Specification Group Services and System Aspects ; Service aspects; Services and service capabilities0 ; 3rd Generation Partnership Project; Technical Specification Group Services and Systems Aspects0 ; 3rd Generation Partnership Project ; Technical Specification Group Core Network and Terminals ; Handover procedures Generation Partnership Project; Technical Specification Group Services and System Aspects Service description Technical Specification Group Core Network and Terminals ; Mobile radio interface Layer 3 specification ; Core network protocols Overall description, Analysis of Intersystem Handover: UMTS FDD & WLAN, London Communications Symposium Considerations regarding L2&L3 Schemes in 802.3/802.11 Handover3GPP 03.60] 3GPP TS 03.60 V7.9.0, 3rd Generation Partnership Project Base Station System -Mobile-services Switching Centre (BSS - MSC) interface Layer 1 specification Digital cellular telecommunications system (Phase 2+); Rate adaption on the Base Station System ? Mobile-services Switching Centre (BSS -MSC) interface (Release 99), Mars Generation Partnership Project; Technical Specification Group Services and System Aspects; 3GPP system to Wireless Local Area Network (WLAN) interworking; System description Décembre 2005 Décembre 2005 Technical Specification Group Core Network and Terminals ; General Packet Radio Service (GPRS) ; GPRS Tunnelling Protocol (GTP) across the Gn and Gp interface 3rd Generation Partnership Project ; Technical Specification Group Radio Access Network ; Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E- UTRAN), 1998.
, Site du groupe de travail 802 Site du groupe de travail 802.16 ? WIMAX : http://www.ieee802.org/16/ [802.21] Site du groupe de travail 802, en.wikipedia.org/wiki/LZ77 [Wiki-Huff] Wikipedia, p.11