A Session Linkage Enabler based on SIP Authentication and its Service

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1 A Sion Linkg Enblr bd on SI Autntiction nd it Srvic Murkmi Koji, Toym Mi, Sud Yoiko, Mizuno Omu Abtrct NTT Informtion Sring ltform Lbortori, Nippon Tlgrp nd Tlpon Corportion , Midori-co, Muino-i, Tokyo, , Jpn E-mil: VoI (Voic ovr I) tt u SI i put to prcticl u long wit Intrnt rotocol (I) tcnology improvmnt. Morovr, IMS (I Multimdi Subytm) in nxt gnrtion ntwork (NGN) bn civd by uing SI. T ttmpt to civ nw rvic to mk t ppliction rvr uing ANI (Appliction Ntwork Intrfc) cooprt wit t function of NGN. A kind of uc rvic, ti ppr propo t mtod for t ion to u t ttttion bd on t SI connction tt nbl to b rd d oc, nd in rl tim wit t otr prty wo i clling by t Wb rvic. Alo ti ppr dicu tt tcnicl iu wr xtrctd bd on rvic. 1. Introduction NTT luncd t commrcil NGN in Mrc NGN i xpctd to provid nw kind of rvic troug n ANI. Hom pplinc wit wb browr r bcoming populr, for xmpl, digitl TV t nd vido gm conol. Mny popl, from cildrn to nior citizn, cn cc Intrnt rvic ily uing uc pplinc. Ti prd of ntworkd ouold pplinc long wit t brodbnd nvironmnt nbl popl wo do not own C nd wo migt vn b unbl to oprt C to cc Intrnt rvic. T rvic cn b oprtd contntly nd ily, o t Intrnt i bcoming mor fmilir to inxprincd ur. At t m tim, t ICT mrktplc i xpnding yrly, involving ctiviti uc dvrtiing ovr t Intrnt, lctronic commrc (EC), nd contnt dlivry [1]. W xpct tt it will b furtr xpndd by ig qulity E C B B B Cutomr Appliction ltform dt cntr Ntwork infrtructur Autonomy Scool Hopil Fctory ublic Smll nd orgniztion/ mdium - izd conumr B2C Vlu cin Cring, ntrpri 6 trillion yn Hlt cr Wtcing Emil クルーフ mdicl cr Environmnt crtion ウェア ( M u p - typ buin Hom Muic Word Wb ntwork ditribution confrnc tt inpir mutul procor intrction Crim of multipl nd ccidnt Cring Elctronic Mdicl Enrgy Storg rvic) ppliction cr control prvntion Big compny B2B/E 1.5 ER SFA trillion yn SCM Fig. 1 B2B2C buin modl wit NGN SOHO Sop Mnufcturr Compny Srvic infrtructur Nxt - gnrtion ntwork (qulity of rvic, curity, trutwortin, nd opnn) Bnk AS SS buin Finncil nd ccounting CRM Humn rourc From owning to uing Fcility invtmnt umption brodbnd ntwork uc NGN. An xmpl of B2B2C buin modl wit NGN i own in Fig. 1. T rvic infrtructur on NGN will b prntd pltform for upporting proviion buin. Mny ppliction prntd by rvic providr will work on t infrtructur. Suc ppliction will crt vlu cin from t rvic providr to cutomr. For cutomr, not muc fcility invtmnt i ndd wn uing t providr rvic. Mny nblr function will b ddd to xiting rvic infrtructur. Ti ppr prnt t rvic linkg nblr, wic link SI ion nd wb rvic. 2. Tcnicl bckground nd objctiv 2.1 Tcnicl bckground (1) Wb tcnology A ric rng of ig-lvl rvic rquiring only browr cn b providd wit rcnt Wb tcnologi. For xmpl, WbOS [2] llow t xcution of vriou ppliction on ordinry Wb browr in ddition to impl rvic bd on HTML or Ajx. In ddition, tr r mny it tt provid dvncd function nd contnt tt oprt wit browr componnt, xmplifid by Wb 2.0 rvic uc Googl Mp [3]. Srvic providr it r bcoming bl to provid rvic by mbling combintion of dvncd function componnt nd providing mup of uc function. In otr word, not only rvic providr r bl to provid ric rng of intrctiv rvic troug jut Wb browr, ty r lo bcoming bl to fotr n nvironmnt tt mk it y to provid otr rvic by combining uc function wit dvncd function componnt (.g., JvScript componnt). (2) SI tcnology T ion initition protocol (SI) [4] provid rvic uc voic pon cll on n IMS modl. SI bd utntiction ytm v lo bn prntd,.g., Suzuki t l. propod n optiml lloction of utntiction function for SI rvic uing n rtion mcnim [5]. 2.2 Objctiv T linkg of Wb rvic nd NGN ould nbl t ur to u diffrnt SI rvic ovr t Intrnt. Troug n NGN, Wb rvic buin cn now provid rvic

2 not jut to xiting Intrnt ur, but lo to t SI rvic ur gmnt. In ti ppr, w propo mtod of implmnting ion utntiction-linkg, nbling t u of utntiction bd on SI connction, n nblr for n ppliction rvic pltform. W nlyz xiting rvic, clrify function tt will b implmntd rvic dlivry pltform (SD) nblr, nd dcrib mtod of implmnting n nblr for providing rvic imply by NGN. W lo dcrib t implmnttion of t proviion of rvic uing only t bic function of Wb browr. 3. Anlyi of Exiting Srvic Computr tlpony [6] i typicl xmpl of rvic providd by linkg btwn computr nd tlpon. Computr tlpony intgrtion (CTI), wic i triggrd by n incoming cll to coordint wit computr t t rciving nd, i widly ud in t cll cntr buin to rpond to cutomr ovr t pon. A gnric CTI ytm intgrt t computr wit t pon on t rciving id tn gnrt crn, wic v bn coordintd in rpon to t ur ID of t cllr, on t rciving id. For tt ron, itution in wic cllr nd cll cntr oprtor tlk ovr t pon wil ring contnt from t Intrnt, uc itution nd illutrtion tt r difficult to dcrib by pc lon, would b difficult to civ wit CTI tt upport only t rcivr. An ltrntiv ytm tt bn propod would nbl bot cllr nd rcivr to viw Wb crn wil tlking on t pon. Howvr, to nur tt cutomr cn u ti rvic, t cutomr mut pr-configur i or r computr to nbl linkg btwn t dtintion of t pon cll nd t Wb by intlling CTI ppliction nd tn inputting t URL of t upport cntr nd ur ID/pword combintion, mking it difficult for nyon to u t ytm cully. In ddition, t nd for rvic tt coordint wit cllr nd rcivr nd i not jut by CTI ri t tougt tt uc rvic could b implmntd for gnrl ur, uc for u btwn frind or witin t fmily. For xmpl, w cn nviion vriou wy in wic popl cn mk u of vriou Wb rvic ovr t Intrnt during pon cll, uc ring poto or looking t mp. Currntly, ti i don by xcnging -mil ddr by pon, tn ring URL for dlivring grpic or providing mutul confirmtion, or by intlling ddictd ppliction uc intnt mging (IM) ppliction on bot C, tn logging in nd dding c otr to buddy lit. In rl-tim communiction tt vri d oc for c pon cll, t pcil tup, in wic oftwr mut b rgitrd or intlld bfornd nd frind lo v to b rgitrd, nd up rducing t convninc of t mdium. In ddition, bot t cllr nd rcivr mut v crtin mount of kill, nd bot lo mut v intlld pcific ppliction bfornd, o ti mtod i not lwy y. 4. Sion Autntiction Intgrtion Mtod 4. 1 Rquirmnt To implmnt tlpon connction to vriou Wb rvic on t Intrnt in n SD mnnr, t currnt nvironmnt dictt tt t lt t following tr condition mut b tifid: -T rvic cn b ud btwn t cllr nd rcivr t ny tim wil ty r on t pon. -T rvic cn b ud witout ny ddictd ppliction or pcil oprtion, uc inputting ur ID nd pword or n URL. A login oprtion bfor t intlltion of pcil ppliction for bot t cllr nd rcivr i unncry, nd tlpon cll cn bgin if tr i imply quipmnt quippd wit browr. -T rvic offr ntrprnur cn provid t rvic rltivly ily. T ppliction rvic pltform offr t utntiction bd on t SI connction to t rvic ntrprnur. A rult, t rvic offr ntrprnur bcom bl to provid ricr rvic ily by combining function of t ppliction rvic pltform Srvic modl W now dicu t rvic modl tt i t ubjct of ti tudy. T prrquiit for ti rvic modl follow. rrquiit 1: A numbr of tlpon nd diply trminl r connctd to t gtwy. rrquiit 2: Ec cllr nd cll dtintion corrpond to numbr of ubcribr lin, not jut on. rrquiit 3: Ec diply trminl cn u n ordinry browr, not rquiring ddictd ppliction. rrquiit 4: Ec of t rvic ud by t prticipnt r Wb rvic ovr t Intrnt nd do not rquir t intlltion of ddictd function ppliction in t trminl for c rvic U-c c xmpl Two u-c xmpl tt conform to t bov-dcribd rvic modl r own in Tbl 1. An xmpl of u-c 1, ring, i own in Fig. 2. By uing t tlpon, two ur cn cll up diply of t m mp, wil imply tlking to c otr, to upply xtr tt word cnnot xpr. W cn conidr t ion utntiction Tbl 1 U-c xmpl U-

3 Trfor, Wb rvic cn b ccd troug Wb browr by uing t ion of t tlpon cll, wit nitr pcil login oprtion nor rgitrtion bfornd. Tu, t Wb rvic numrtd in t u c tt work in cooprtion wit tlpon cll bcom vilbl. 5. Tcnicl ftur Fig. 2 Exmpl of ring intgrtion mtod to b on nblr of n ppliction rvic foundtion tt will nbl rvic providr to ily implmnt ric rng of Wb rvic, uc to own in Tbl 1. Tu, it i poibl to r wid rng of rvic during pon cll. Sinc rvic cn b rd wil ctting on t pon, w cn xpct to brodr nvironmnt in wic ur tmlv introduc rvic to c otr, lding to n xpnion in diffrnt buin opportuniti Implmnttion tcniqu T tcniqu ncry for implmnting prrquiit 1 to 4 r litd blow. []. A mtod of corrlting t ion of t vriou dvic wit built-in browr, uc tlpon nd TV, wic r connctd undr gtwy. [b]. A mtod of linking t cllr nd rcivr dvic wit built-in browr. [c]. A mtod of ditinguiing nd corrlting ion, vn wn two lin r ud imultnouly. 4.5 Tcnology outlin In ytm wit t ion utntiction linkg function, t prty wo tbli t link wit SI cn u t Wb rvic in cooprtion troug Wb browr uc tt in om pplinc. A tlpon cll i bgun t t om gtwy by t SI-tblid ion. Morovr, t Wb browr i imilrly connctd wit t ntwork troug t om gtwy, nd t Wb rvic cn b ud. (1) Tcnology for ion utntiction linkg for clling nd clld prti tt mk SI ion ky. T idntifiction dt to mng two popl wo r tlking ovr t tlpon i diprd by voic cll tt u SI. W cll ti dt ion. Sion utntiction linkg cquir t ion from t om gtwy (HGW) by t Wb browr upon cll tup nd trnmit it to t ion utntiction linkg function.in t ytm for ti function, t corrpondnc of flifiction of t ion nd ion nd n cc by t browr (digui of t HGW dvic) i vrifid. Wtr it i ctully dmnd by t cllr nd rcivr in t tlpon cll i lo confirmd. Morovr, t ion utntiction linkg function mng t cllr nd rcivr in c ion. A rult, t rvic offr ntrprnur cn ily offr cooprtiv Wb rvic. (2) Spcifiction t dtintion of connction by ion utntiction linkg function In ti mtod, t rvr dirct t rcivr nd cllr browr for not URL but for t ion by communicting t connction dtintion btwn t cllr nd rcivr HGW.Ti control i poibl ovr ny connction to t cc dtintion to prvnt URL cc by mliciou ur, nd t cllr nd rcivr r cngd to diffrnt URI by notifying t ytm dtintion URL btwn t cllr nd rcivr of tir rgitrd cc t c Wb rvic dtintion. (3) Sf offr of for ion. Informtion bout c ion, including on t tlpon cll, cn b concld from t Wb rvic offr ntrprnur for privcy protction. Informtion for t ion i intd offrd undr pudonym to t rvic ntrprnur. Trfor, it i f. Own om A numbr of trminl connctd to gtwy Fig. 3 Ntwork Wb rvr SI rvr Frind om Sion cn b ditinguid, Corrltion vn wn two btwn browr- lin r ud quippd dvic, bd on ion Srvic modl Corrltion of ion of tlpon nd browrquippd dvic Compny 6. Outlin of ytm A ntwork vrifiction mtod in wic t HGW notifi t rvr of ion nd mtod in wic t rvr gnrt t ion, notifi it to t HGW, nd vrifi t rturnd r conidrd mtod to civ t prviouly xplind tcnology. In ti ti, t ntwork vrifiction mtod i dicud. T ytm rcitctur i own in Fig. 4. T ppliction rvic pltform i compod of n nblr for t ion utntiction linkg function to wic t vrifiction function, t cllr, nd t rcivr of t ion rpon prt nd ion r rltd.

4 Appliction rvic pltform Sion utntiction linkg function Enblr for ion utntiction linkg Vrifiction of corrpondnc Cll cquiition of cc origin nd ion function SI-URI Intrnt Cll vrifiction nd rotocol ddr rltion function convrion function Rult Vrifiction of ion AI Informtion rpon prt Control function t connction dtintion NGN Sion Sion cquiition function HGW Sion Fig.4 Sytm rcitctur T ion rpon prt notifi t confirmtion of t vlidity of t cc from Wb browr, nd ion rcivd from t Wb browr i notifid to t nblr for t ion to dmnd Wb rltd to t cllr nd rcivr. T nblr for t ion tr function. On i t cll cquiition function, in wic rfrnc from t rvr tt cn confirm t cll, uc SI proxy, wit ion on t tlpon cll to vrify t vlidity of t ion rcivd from browr. Anotr i t SI-URI-Intrnt rotocol ddr convrion function, wr t ourc I of browr wit t cc i confirmd to corrpond wit t ion to vrify t vlidity of t cc origin of browr. T tird i t cll vrifiction nd rltion function, wic judg t vlidity of t cc from Wb browr bd on t vrifiction rult rcivd from t cll cquiition function nd t SI-URI Intrnt rotocol ddr convrion function. It notifi t ion rpon prt of Wb bout t cllr nd rcivr rltionip. 6.1 Squnc An outlin of t qunc of t ytm i own in Fig. 3. Ti mtod conit of four rougly prt p. (1) 1: Etblimnt of tlpon cll. T tlpon connction i md by uul SI. It i poibl to ift to p 2 nd 3 t ny tim to u rvic by trting Wb browr ftr ti p. (2) 2: Acquiition of ion. HGW rciv t cc from Wb browr nd confirm tt t tlpon cll corrpond to t ccing Wb browr. HGW notifi t ion to t Wb browr, wic tn notifi t ion utntiction linkg function by rdircting t tlpon cll wil t ur r tlking. (3) 3: Vrifiction nd rltion of ion. Hr, t cc of t Wb browr i vrifid to b vlid nd Wb i gnrtd bout t rltionip to n intndd prty. Concrtly, t prt for ion notifi t nblr of ion tt rlt to rcivd ion nd t Wb browr. Informtion for t Wb to rlt t cllr to t rcivr i gnrtd ftr t vlidity of t cc of Wb browr i judgd from rcivd nd t nblr for t ion i notifid of t prt for t ion. A rndom, non-rltd ID i ud wit ion for t ttttion. Ti i not ud for Wb for ur privcy protction. (4) 4: Bginning of Wb rvic. In p 4, t rndom ID i notifid, t cllr nd t rcivr r rltd, nd t Wb rvic browr

5 Cllr Browr Tlpon 1 2 INVITE 200 OK ACK HGW 1Tlpon cll tt diply 2Extrction of ion 3Sion SI rvr Sion Appliction rvic pltform (ion coordintd function) Enblr for ion Informtion utntiction rpon prt linkg tlking INVITE 200 OK ACK Wb Cll rvr HGW Tlpon Browr 1Tlpon cll tt diply 2Extrction of ion 3Sion 3 Sion 4Vrifiction of ion 5Informtion diburmnt for Wb Informtion for Wb 4 7Wb rvr connction ( 6Intruction of Wb rvr t connction dtintion 7Wb rvr connction ( 9Scrn diply 8Vrifiction nd rltion of for Wb 9Scrn diply Fig.5 Squnc in t Sytm gnrtd in 3 i nt to t Wb rvr. Aftr t Wb rvr rdirction intruction, t rvic cn trt. T xcng of Wb btwn t ion utntiction linkg function nd t Wb rvr i md cur by uing tcnology for tndrdizd Wb ttttion. Ti tndrd provid for u only by norml browr. T dtintion of t cc by t browr i controlld by t cllr nd rcivr' ID. For intnc, if you know bfornd t cll cntr you will b tlking to ovr t tlpon, you my pcify t rgitrd cll cntr URL in t rpon prt of t Wb browr ion. Morovr, if t tlpon cll i btwn frind, t URL of t portl it wr t mp rvic or fil-ring rvic tc. cn b ud i ccptbl t connction dtintion. 6.2 Wb Srvic Scrn T brown crn own in Fig. 6 i n xmpl of rvic offrd from t ppliction rvic pltform. T diplyd icon i t rvic tt t ur contrctd. Wn itr ur lct t Togtr In Mp" icon (Fig. 6) wil tlking ovr t tlpon, t common mp rvic own in t u c cn b ud. Tn, t common mp rvic trt on t crn of t cllr nd rcivr' Wb browr. T dvntg wn t rvic ntrprnur nd t ur u t ion utntiction linkg function uc in t bov xmpl r follow. 1) Advntg for rvic ntrprnur. T rvic ntrprnur cn ttt Bot ur r connctd" by uing t ion coordintd function. Trfor, common-typ ppliction rvic cn b providd fly nd ily witout t ntrprnur ving to mk t function im or rlf. - T ur introduc t rvic to t otr prty, nd furtr buin opportunity i crtd. - A ricr rvic cn b providd by combining wit otr nblr. 2) Advntg for ur. - Nw communiction ovr t tlpon r poibl. T ur cn v n y xprinc wil tlking bout nw, vriou rvic. - T rvic ddition nd contrct cn b ily ud wit on button nd r bd on t rcommndtion of t otr prty.

6 Offr from ppliction rvic pltform Srvic tt rvic offr ntrprnur i providing Fig.6 Srvic Intrfc 7. Summry In ti ppr, ion bd on SI connction tcnology fly nd ily xtnibl to Wb rvic during tlpon communiction w propod. A mtod for t ion to u t from t Wb rvic w lo propod. T xmintion of pplying tcnologi uc NGN to buin ntwork will b dvncd wit t clrifiction of t rvic cn in t futur. 8.Rfrnc [1] Intrnt Aocition Jpn Intrnt diffuion rt for Jpn ttp:// [2] ttp://lp.goo.n.jp/info/dtil/939/ [3] ttp://mp.googl.co.jp/ [4] IETF RFC3261, SI: Sion Initition rotocol, Jun [5] M. Suzuki, M. Okmoto, nd O. Mizuno, Optiml lloction of utntiction function for SI rvic pplicbl to diffrnt cc typ, ICIN2006 8B-1, [6] CTI(Computr tlpony intgrtion),isbn-10: ,2001.