5
`
`5
`
`5
`
`reconfiguration sequence terminates wl th the last:
`active node in the erihanced range passing th{:: tt,ker1
`to the ID of a node in the basic range.
`A !A<'t as d.Ed~ined in claim 2 wherein~
`3.
`the e1o:ecution of the :basic reconfigura:tion
`sequence commances upon the ~xplration of a
`predetermined ti:me period est<:i.hlished by the ID of
`
`all a'~tive ~mhanced. node.s: have IDs .in the
`emhm1c{'l!d r:aru;re; and
`the execi:.ltion o.f the enhanced
`reconfiguration seJ:1ilet1ce commences 'QJ;ion t:b.(:}
`expiration of a predetermined time period
`established hy the lD of an active enhanced node in
`the enhanced range.
`5.
`A LAN as def in~sd in claim 4 wherei.11:
`the. prede.te:t"lninetl time period established
`by the ID of an act.i ve. enhancisd node in the enhanced
`ramJ·e is greater than the p:redeterrnlned time period
`e.stablished by the ID of an active node i.n the basic
`
`6~
`
`A U\'N as defined .in claim 2 wherein~
`all active enhanced nodes have.IDs in the
`enhanced :t'a:nge; and
`the execution of the enhanced
`reconfiguration sequence com1Mn1ces upon the
`e}C_pi:cation of a p:redete:t:'lll.ined ti.me period
`established .by the :rn of ar1 active enhanced node ' l.n
`
`the execution of t...he e:riti.anoed
`reconfiguration sequence conmiences with OhE! activ~
`eni:~anced node in the enhanced range whlch has the ID
`that results .in the expiration of predetermined time
`period; and
`
`5
`
`MSLV_lN\/ 003104
`
`Unified Patents
`Exhibit 1002
`Page 1951 of 2584
`
`

`

`61
`
`10
`
`5
`
`5
`
`5
`
`5
`
`sa.id one active enhanced node includes
`me~rns for responding to a. token pt:tss to a
`predetermined ID o:e a node .in the basic range to
`complete the token loop.
`a,
`A LA.N as defined tn claims 2 wherein:
`at 1east one active enhanced node has an
`ID in the basic ranget a.nd
`the execution of the enhanced
`reco:nf:iquration sequence begins trpon receipt of a
`token by an active enhanced node in th~~ basic range
`of addresses.
`A !,AN as de.fined in '~lairn 8 wh(~t~ein~
`9.
`the e:xecuti.o:n (:if tht> bas.ic reco:n.:f igu:estion
`segt1en:ce com.-'t'iences upon tht> e:q .. 11.ration of' a
`predeteri:t«ined time peri~ld establ.ished by the ID of
`an active node in the basic range~
`10. A IJ'iJ~ as define-d it~ c:tah~ 2 whe:t·~dn:
`the token pass frOlll the 1as:t active
`enhanced node in t.he enhanced :a.Aange to the IP o:f a
`node in the basic range allows the basic
`reconfiguration sequence to be completed through the
`r~~~nainiw;.-r active m>des in the basic range.
`11. A l,AN as defined in claim 1 whet·ein t
`each enhanced :node has at least: one
`enhanced op~~rational capabiili ty which all basic
`nodes do not. have but which appears to b<;i.si.c nodes
`ae» ba.sic ~'<f operat:iotlal activity"
`1.2 * A lJ\.}1 as ·de.fi11ed in claiin 1 \~?ne:cei:i:
`said recon:figu:rati<.1n means h> distrikrut:ed
`among all (:if the nodes.
`13. A L~N as defined in clai:m 12 wherein~
`said reconfiguration m~~ans: wh.ich e:-:ecutes
`the enhanced reconfiguration seqt1ence is present,
`only at the enhanced nodes.
`14. A Ll\N a.s defined in. claim 13 wherein~
`the reconf iguratio.n means of each basic
`
`MSLV_lN\/ 003105
`
`Unified Patents
`Exhibit 1002
`Page 1952 of 2584
`
`

`

`62
`
`node transmi.ts and responds to standard tokens
`fI'f'l's) durh1g execution of the basic reconfiguration
`sequence; and
`the reconfigu:cation w,eans of each enhanced
`node transmtts one of either extended tokens {XITTs)
`o:r .~;mh.anc.ed tokens {XTOKs} arid responds to standard
`tokens, extended tokens ~~r e:nh.anoed tokens d:uring
`e~(ecu:tion of the enhanced reconfiguration sequence.
`·A IAN as det"'tn~sd i:n claim 1.4 wherein:
`15.
`the reconfigtn'ation -means of each basic
`node also responds to e::.:t~ntded tokens dtrring
`~~xecu:tion of the 1:-econf iguration sequences.
`16. A Ll\N as defined in claim 15 wherein:
`
`j'.rom h<:mic nodes to enhanced nodes. occur in
`accordance with a basic comm1mication protocoli and
`communications between enhanced nodes and
`fron1 enhanced nodes to basic nodes occur in
`ac.~cordance with an enlumced communication protocc.il,
`the enhanced protocol includes a first signalling
`scheme which is recognizeable only by enhanced nodes
`and a second signall.ing scheme t4hich is recogn.i.zable
`:tv both Rm.h.atv~eJ:i and basic m::ides~
`i\ !4\N as defhrnid in claim 16 wherein~
`1. 7.
`each extended token contains signal
`elements which a:t·~, .recognizable in the basic and
`enhanced pt'ot:ocols and which contain additional
`signal elements which are t:ran.sparent in the ba.sic
`p.t·otocol but which convey information in the
`enhanced protocol.
`18. A· LAN as defi.n.e.d in claim 16 wher~d:n s
`each enhanced token ccmtains s:ign.~.l
`eleme11ts which are recognizable only in the
`e:nhanced protocol and. which are transparent in the
`basic protocol..
`
`5
`
`J.. o
`
`.5
`
`10
`
`5
`
`5
`
`MSLV_lN\/ 003106
`
`Unified Patents
`Exhibit 1002
`Page 1953 of 2584
`
`

`

`WO ~)/01S3t}
`
`PCT/US89.10578:!
`
`1.9.
`
`.A LAN as defined i:n claims l or 15
`
`the execution Of both the basic and
`enhanced ri>H.::cn.figuration seqi,,lences involves
`transmitting a token to an ID which is incremented
`relati v~~ to the !D of the node trans1n.itting the
`token and :recording tbe im:::remented :rn as the next
`ID {NID) in the token loop upon sensing netwo:t:'.k
`~\ctivity cr~~ated by the suo.cessful .receipt and use
`of the t:o:!>:en by the nm:t active node.
`:;rn. A L<\.t~ as defined in clai1u 19 wherein~
`the recorded incremented ID is that of the
`:next active node in the reconfigured token loop.
`21-. A !AN. a:a defined in claim 20 wherein~
`after the token loop has been initially
`establishedt the basic and enhanced reconfiguration
`sa.quences are selectively executed upon a previously
`active node becommin~l i:n.cwtiv~~ hy any sing1~ m:>di<~
`transm.i tting a to}.:en to an incremented !Ds above the
`NID when the node at the previous N!D becomes
`.inactive and recording· the new incrtrmented NID upon
`s;i~.nsing network activity associated with the
`successful receipt of the token at th~~ next active
`node at the new NHL
`.22. A LAN as defined .in claim 20 wherein:
`the basic and ~nhanced reconfii;_ruration
`sequences are executed at all of the nodes to
`t~stabLish a new token loop when a pre.viously
`inactive node beco111e.s active.
`2 3 • A :tAN as defined in cla.im 1 wherein:
`
`from enhancect nodes to bas.ic nodes occur in
`a.ccord<.rncia~ with an enhanced communication protocol,
`the 1:3nhanced protocol includes a .first signa11i.ng
`scf:u~m11a which is recognizea.ble only by enhanced nodes
`
`10
`
`5
`
`JO
`
`5
`
`5
`
`MSLV_lN\/ 003107
`
`Unified Patents
`Exhibit 1002
`Page 1954 of 2584
`
`

`

`·<':
`
`64
`
`and a second signalling scheme which i.s recognizable
`by both enhanced and basic: nodes;
`communications in .both protocols involve
`t:ransmitt:tng frames of dab~, each data frame hav.i.ng
`an address field; and
`the address field in the basic frames has a
`~~:.L~e limitation \Vhich limits the maxiltu.xm nu!"d::ier of
`peL·missi:ble nodes ln the ba.sic .:range,
`24. A LAN as defined in claim 23 whe:i:~ein~
`the addre.ss field in the enhanced frames
`has a size limitation which l.ind:t:s the m~ndmu..in
`mx.<nber of nod.es in the enhanced rang·e to a num.bar
`substantially greater t.ha:n t~h~~ maximum nmliber of
`permissible nodes in the basic L'<:<.nge,
`25. A LA.l."f as def.ined .in claim 1 wherein:
`at least one enhanced node with an ID in
`the enhanced range includes means for respi:mding to
`a token addressed to a predetermined ID in the l:iasic
`rang('.:i i.n the token loop t said one enhance.ct nodE"~
`normally responding to data packet frame
`tram~m.i.szions ado:ressed to it at its ID .i.n trw.
`extended range.
`26. A !J\N as defined in claim 25 wherein!
`the. pre.determined :tD in the basic range to
`which the one en.ha:nce.d node respohds to tokens ts
`available to designate brcsadcast data :frames to all
`t·b.e nodes ..
`
`t:.he predetermined :rn in the hasic range. to
`which thm. one enhanced .node resp(:ind$ to tokens is
`~?!mplt>yed to designate b:t-oadcast data frames to all
`the nodes.
`
`10
`
`5
`
`5·
`
`5
`
`5
`
`MSLV_lN\/ 003108
`
`Unified Patents
`Exhibit 1002
`Page 1955 of 2584
`
`

`

`AMENOEU ClJ\IMS
`!:received by thi2 I:nt:.;~rnationaJ Bureau
`on 21 May 1990 {2L O:L 90) i
`original cl.<~.Lms 1 1 6 1 7 1 11,21,,26 and 27 amended;
`other claims i..1:ni::h<~.ri9io:<l (7 pagE;s) ]
`
`1.
`
`A di:r.ected token local area network (:LAH) 1
`comprising~
`a plurality of at least three nodes, each
`tio1:le having a uniqu:e adct.rea.s or x:o~ at le.a.st onG of
`th~~ :no<l~ss bGt:nq a bas.lo node~ all basic nodes having
`It)S whic11 fall w.i.thin .a basi.c ~range of permissibl·e
`IDs, at least one ~"Jf th.e nodes being an enh.anced.
`node, each ~nhanced node having- an ID w'h.ich falls
`with.in a:n enhanced ran~F:.i t-~f permissible IDs or the
`basic ranget al.l of the IDs in the enhanced :range
`being greater than those permitted in the basic
`range, at least one of the enha:nced nodes having an
`:r D in the enhanced rant;le; and
`rec:onfigura:t.ion means associated with all
`of the :tH'.3<:fr~.s am:l. operative for pass:i.:ng tokens tc'
`locate the next active node and automatically
`establ.J.sh a.l.1 of the active nodes in a token loop
`according to the IDs of the nodes to enable all of
`the active nodes to receive toJ;:ens duri.rsg normal r ... ~N
`operation 1 sa.id reconfiguration means e~:eouting a
`st;:u1dard reconfigu.rat:.ion sequence for ).ooat:.ing and
`estahl ish.in~l the active nodes i.h the basic ·range of
`IDs in a basic segment of the token loop~ said
`reconfigi,Jration meal'H>< also e~'.eC~tting an enhanced
`reconf.ii;ruratio:n sequ.ence to1~ locating and
`establishing t:he active nodes in the enhanced. ran9'e
`of IDs in the other enhanced segm~~nt o:f the token
`loop" and the execution of the enhanced
`:reconfiguration sequ.1<.wi.ce Ct-~mtrtenc$S with the first
`enhanced node to receive the tol>';en in conjunction
`w:ith execution o:f t.he, basic reconfiguration
`
`5
`
`10
`
`15
`
`20
`
`25
`
`30
`
`MSLV_lN\/ 003109
`
`Unified Patents
`Exhibit 1002
`Page 1956 of 2584
`
`

`

`2"
`
`A LA.:.~ as defined in cl aim l where.in:
`the execution of the enhanced
`recc.m.figurat:ion sequence. termi.nates with the last
`active node in the enhanced. range passing the token
`t~> the :ro of a node in the basi.c ran9-e.
`A LAN as defimad in claim 2 wherein:
`3..
`the execution of the. basic reconfigurati.on
`sequence commences upon the e.4t>iratitm of a
`predetermined time period estakilished by the ID of'
`an active node in the basdc range.
`A Lfu"1 as defined in. claim 3 wherelm
`4:.
`all active eru'lanced rn::ides have IDs in the
`enhanced :can.gee; and
`the execution of the enhanced
`.reconfi.qtiration sequence commences upon the
`expiration of a predetel.~ined time period
`establh>hed by the ID of an active enhanced node in
`the enhanced. range.
`A Ll'<l:~ as de.fined in clafat 4 wherein~
`5.
`the pr.ed.etar:mined ti:me period established
`by the lD of an active enhanced node in t.he enhanced
`range is greater than the p:r:~~i:lwterm.ined ti.me period
`e.s.tablished by the ID of an active node in· the b~sic
`range,.
`
`all active enhanced nodes have IDs i.n the
`enhanced range; and
`th€:"t exectrtion of the e.n.ha.nced.
`reconfigu.raticn $eqttenc~ co.mmences tipon -the
`expi:t.~ation of a pre.d,etermined tiwe period
`established by the ID of a.n active enhanced node in
`the enhanced range,.
`A L<\...'.I{ as: defined in clai:m 6 wherein:
`7.
`the execution of the enhanced
`reconfi~ruration sequence col11mences with one active
`
`5
`
`10
`
`1.5
`
`20
`
`30
`
`35
`
`MSLV_lN\/ 0031 ·rn
`
`Unified Patents
`Exhibit 1002
`Page 1957 of 2584
`
`

`

`-67-
`
`enhanced node in the enhanced range which bas the ID
`that res.ul ts in the expiration of p.t~edete:rrninad time:
`period; and
`said om.:e active e:n...'l:lanc:ed node includes
`means tor responding to a token pass to a
`p:t:oedete?.-mined !O of a node in the :basic i:ange to
`co'mplet.e th$ token loop.
`8. A LAN as defined in claims 2 wherein~
`at least o:ne acttvi<~ ~t1hanc~d nos..ie ha~> a.n
`!D in the basic :n~.nge; and
`tJ:.i.e ~xecutioti o.f t:he enhatwed
`recon.figuratit.m seqt.wnce beg,ins upon receipt of a
`toke:n by an active enhanced node in the basic range
`of add:t:'esses.
`A k\N as defined in claim s wherein:
`the execution. of the .basic :reconLigitration
`sequence commences upon the exp.iration o~f a
`predeta:t"!ldned time period established by the ID of
`an active node in the basic range.
`10. A !AN a:s: defined in clailn 2 wherein~
`the token. pass from the last active
`enhanced node in the enhanced range to the J.D of a
`node in the basic range allows the basic
`rec;onfiguration seque::nca to ha completed through the
`i~em.aining active nodes in the basic range.
`z-~ !~\N as defined i.n claim l. wherein~
`11..
`each enhanced node has at least one
`·enham,'?ed operati()nal C•~pahiility which all basic
`nodes do not hava but which appears to basic nodes
`as basic LAN operational activity.
`12. A L<\h as defined in claim 1 whereini
`said reconfiguration means is distri.buted
`among all of the nodes.
`13. A LAN as defined in claim 12 wherein:
`said reconfiguration means which executes
`
`5
`
`10
`
`1.5
`
`2 o
`
`2.5
`
`30
`
`35
`
`MSLV_lN\/ 0031·i1
`
`Unified Patents
`Exhibit 1002
`Page 1958 of 2584
`
`

`

`""68-
`
`the enhanced reco:nfiguration sequence is present·
`only at the enhanced nodes ..
`14. A LAW a.s d.ef:in.ed in cla:i:m 13 wherein:
`the reco.ntiguration means of each basic
`nw:te tt'~:msmi ts and .re.sponQ.s t:t~ stand a.rd tok:$.l'JJS
`(ITTs) d\..triflg execution of th-e basic recon:f igu.raticm
`seguenoet and
`t:h-e reconfiguration me.ans -of each enhanced
`node transmits. one of either e:l-:ttended tokens (X11~Ts)
`or enhance.cl tokens {XTOKs) and .responds t\: ... ) standard.
`tokens, extended tokens or enhanced tokens during
`exectttion cf the e..nhanced r-econfigm:ation sequenc~~.
`UL A Uu~· as defi.ned it~ claim 14 whe:rein~
`the reconfiguratton :means of each .basic
`node also responds to extended tokens during:
`execution of the :reconfiguration sequences ...
`16. A !.i..~N as defined in claim 15 wherein:
`communications between basic nodes and
`f:rom basi.c nodes to enhanced nodes occur in
`accordance w.i.th a basic co~11:munieation protocol; and
`communications be.tween enhanced nodes and
`from. eri.hanoed nod:{~$ to ha.sic node$ occur in
`a:ccordancs with an enhanced communioat:io.n protocol f
`the. enhanced protocol includes a ti:rst signalling
`sch.$me whiC<h i.s recognizeable. only .by enha11ced nodes
`and a second signalling sche.me. which is :t:ecogni~able
`by both enhanced and basic nodes..
`1.7... A t<&N as de.fined in cla.i.m. u; wherein:
`t:.h~Ch ~xte.nded token contains si~~ma1
`elements which are recogni.za:bl-e in the :basic and
`enhanced protocols and which co:nt:nin additional
`signal elements which. are transparent in the baste
`protocol but which convey in::fcrm.ation in the
`enhanced protocol.~
`
`io
`
`1.5
`
`.2 o
`
`25
`
`30
`
`MSLV_lN\/ 0031 ·12
`
`Unified Patents
`Exhibit 1002
`Page 1959 of 2584
`
`

`

`\VO 90/07830
`
`PCT/US89/051'8!
`
`-69-
`
`n
`
`10
`
`15
`
`:;i5
`
`30
`
`HJ~ A r,.,.~N as def.i.~1ed .in claim Hi wherein~
`each enhanced token contains: signal
`ele:nlio~nts vihich are recognizable only in the
`enhanced protocol and which are transparent in the.
`basic protocol.
`19. A LA>.~ ais: defim~d in claims 1 or 15
`wherein~.
`
`the execution of both the basic and
`enhanced reconfiguration sequences involves:
`transmitting a to.ken to an !D which is incremented
`relati:ve to the IO of the node transmitting the
`token and recording the incremented !D as the :next
`ID {N!D} in the token loop upon sens.ing network
`act.i vi ty created by the .s:ucces:s.fu1 receipt ~md trne
`cf the token by the next active nodey
`2CL A I«\tr as defined in claim 19 wherein:
`the recorded incremented !D .is that of the
`next activce node in the reconfigured token loop.
`21. A L'\J:t as defined in claim 20 wherein~
`after the token loop has been initially
`i?sta.blished( the basic a.nd enhanced reconti9uration
`sequences are se1ecrtively exacutect upon a previm1sly
`active node he.coming inactive by any single node
`transmitting a token to an .incremented IDs above the
`NID when t.'he node at the pr~vious NID .becomes
`inactive and recording the new incremented NIO upon
`smwing network activity associated with th.a
`success.ful receipt of the token at the next acti.ve
`node at the tH~W NID.
`~2. A I.Jill a.s defined in claim 20 wherein~
`the . .basic and enhanced recon:figurati.on
`sequences a:.t'e exec'\xted at all of the nodes to
`establish a ru:~w token loop when a previously
`i.nac:t.i.ve node becomes active.
`
`MSLV_lN\/ 0031 ·rn
`
`Unified Patents
`Exhibit 1002
`Page 1960 of 2584
`
`

`

`PCfllJS89/05781
`
`5
`
`10
`
`15
`
`20
`
`25
`
`30
`
`com.m.uni.cations between enhan.ced nodes and
`fro:m enhanced nodes t:o .basic nodes occirr in
`accordance with an e:rihance.d cc:nnrnunication protocol r
`the enhanced protocol includes a first signalling
`scheme which is :rec~)gnizeable only by enha.:rwed nodes
`and a second signalling scheme which is recognizable
`by both en..~anced and basic nodes t
`communications in both protocol.s lnvol ve
`t:ra:m~mit:ting frames of data$ $.ftCh data frame havin<J
`an address field; and
`the address field in the basic frames has a
`size limitation t-ih,ich limits the maximum m .. t:mbe:r of
`permissible nodes in the basic :range.
`24.. A L~N as defined in claim 2:3 whe:rein:
`the address :field in the enhan.oed frames
`.has a size .. 1.:bnitation which lbnits th.e maximum.
`nulttber of nodes in the enhanced :range to a number
`S't.ibstantially greater than the maximum number of
`pa:t-mi.ssible :nodes in the basic range.
`25 ~ A L..till as defined in claim 1 wherein:
`at !.~~a~~t one enhanced nooa with an JD in
`the enhanced .ran.g-~ includes means for re:spondJ.ng to
`a token addressed to a p:t:-ed.et:e:rmined ID in the.~ basic
`t~~nge in the toka.n loops said one enhanced node
`n,01:-mally responding to data packet. frame
`transmissions addressed to it at its ID .in the
`extended range.
`}\ !.AN a.s defined in cl.aim 25 wherein~
`26..
`tne predeta.r.mined :rn in ·the hasi.o range to
`which the one enhanced node responds to tokens is
`available to designate broadcast data. frames to all
`the nodes.
`
`MSLV_lN\/ 0031 '14
`
`Unified Patents
`Exhibit 1002
`Page 1961 of 2584
`
`

`

`.. 71-
`
`the predetet"mined ID in the basic :range to
`which the one enhanced node responds to tokens is
`employed to designate hroaxicast data frames to all
`the nodes.
`
`MSLV_lN\/ 0031 ·rn
`
`Unified Patents
`Exhibit 1002
`Page 1962 of 2584
`
`

`

`40
`
`296
`
`TO HOST PROCESSOR OF NODE
`
`UNK LEVEL
`PROTOCOL ENGINE:"
`
`--"""""""'-~~--, 1 ss r·~. o.
`/ S.?
`,__~~~~~-,(56
`PHYS! CAL LEVEL
`J
`j PROTOCOL INTERFACE
`
`TRANSCEIVER
`
`54
`
`Fig_3
`
`MSLV_lN\/ 0031 ·rn
`
`Unified Patents
`Exhibit 1002
`Page 1963 of 2584
`
`

`

`(»
`--.t
`<.Ile
`~
`·~ -~ ·-.,,
`·....: c: w
`"""
`~ n
`
`....
`
`-c:::;
`<.,,;
`00
`<l
`~
`>::;:)
`'4:!
`0
`~
`
`<._;.;
`,.,
`..... ~ .....
`r-..::
`
`/ .52
`
`-·
`
`46--'-l
`
`''.-.,,,,,-'
`I
`f
`'
`
`-~\
`
`+-41>
`
`/"' -~._,,,44 'SO
`
`46 ··
`48~
`ENHANCED INTERFACE
`
`if(
`
`&
`
`HH
`
`;,'iO
`
`'°'"
`
`~ )0.
`
`42
`.52
`
`I 46
`\,./'44
`,,,,,!
`t-4s
`
`45.,,~ t ~t,/ 48
`
`r:---------t
`\ f
`/. l ... ______ ... ___ h#------tf,
`->..t
`ry.~~44
`4s.----T
`ENHANCED INTERFACE
`
`f -
`
`40"' !
`
`¥
`
`40
`
`NOOE~
`BAStC Q
`·----~---,.,,.,, -,;,;,,..,
`
`Fig_2
`
`• • •
`
`NOOE ~
`ENHA. NCEO Q
`
`ENHANCED INTERFACE
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