(cid:36)(cid:53)(cid:53)(cid:44)(cid:54)(cid:3)(cid:42)(cid:53)(cid:50)(cid:56)(cid:51)(cid:15)(cid:3)(cid:44)(cid:49)(cid:38)(cid:17)(cid:3)
`(cid:44)(cid:51)(cid:53)(cid:21)(cid:19)(cid:20)(cid:24)(cid:16)(cid:19)(cid:19)(cid:25)(cid:22)(cid:24)(cid:15)(cid:3)(cid:83)(cid:17)(cid:3)(cid:20)(cid:3)(cid:82)(cid:73)(cid:3)(cid:21)(cid:28)(cid:23)
`
`EX. 1005
` (Part I)
`
`

`
`:"-APT 13-3?
`
`._-'a.__.‘:‘._I_'~T_'r.3N.-‘h.[.l.]-."'«u'
`
`J F-'|'.="v.N1"J.vER1?! FDR
`
`'l'I{1.1NI-{ED l’R|‘L".~‘*{1T 1
`
`-"v..\'1T} M{JBl|.i-'. R_+§flJj_1_..‘*_4_‘;r'5i'E_'E_:-.'1‘E_}i
`
`(cid:36)(cid:53)(cid:53)(cid:44)(cid:54)(cid:3)(cid:42)(cid:53)(cid:50)(cid:56)(cid:51)(cid:15)(cid:3)(cid:44)(cid:49)(cid:38)(cid:17)(cid:3)
`ARRIS GROUP, INC.
`(cid:44)(cid:51)(cid:53)(cid:21)(cid:19)(cid:20)(cid:24)(cid:16)(cid:19)(cid:19)(cid:25)(cid:22)(cid:24)(cid:15)(cid:3)(cid:83)(cid:17)(cid:3)(cid:21)(cid:3)(cid:82)(cid:73)(cid:3)(cid:21)(cid:28)(cid:23)
`IPR2015-00635, p. 2 of 294
`
`

`
`{C}
`
`Crown Copyright I933
`First published January 1933
`Reprinted and revifi October I9‘3‘CI
`Reprinted and revised November I991
`
`Amend moms issued since publication
`
`
`
`Amendment
`
`Date of issue
`
`Text affected
`
`Number
`
`|
`
`1
`
`I October 3390
`
`Incorporated in the verason
`reprinted in October 1996.
`hmonded tax: was highlaqhced
`by a bar in the margin.
`
`(cid:36)(cid:53)(cid:53)(cid:44)(cid:54)(cid:3)(cid:42)(cid:53)(cid:50)(cid:56)(cid:51)(cid:15)(cid:3)(cid:44)(cid:49)(cid:38)(cid:17)(cid:3)
`ARRIS GROUP, INC.
`(cid:44)(cid:51)(cid:53)(cid:21)(cid:19)(cid:20)(cid:24)(cid:16)(cid:19)(cid:19)(cid:25)(cid:22)(cid:24)(cid:15)(cid:3)(cid:83)(cid:17)(cid:3)(cid:22)(cid:3)(cid:82)(cid:73)(cid:3)(cid:21)(cid:28)(cid:23)
`IPR2015-00635, p. 3 of 294
`
`

`
`
`
`FUIREWDRD
`
`This standard defines the rules for communication between radio units and trunking
`system controllers operating in tnml.-ted private land mobile radio systems.
`
`Applications and test conditions for this standard, applicable to Band 1]], are contained in
`the following specifications prepantd by the Depanment of Trade and industry.
`F.adio-communications Agency.
`
`MP1‘ 1343
`
`System interface specification for radio equipment to he used with
`commercial tninked networks operating in Band lll, sub-hands l
`and ‘.2.
`
`MPT 134?
`
`Radio interface specification for commercial trunlted networks
`operating in Band III, sub-bands l and 2.
`
`MFT 1352
`
`Test schedule for the approval of radio units to be used with
`commercial Lninlted networks operating in Band lll. suh—hands l and
`2.
`
`I
`
`t
`
`R" h
`
`Finns intending to manufacture equipment which complies with the standard should be
`aware that certain features of the standard are subject to [PR claims.
`
`All firms are therefore advised that they should make appropriate enquiries through
`their Patent Agents before proceeding.
`
`(cid:36)(cid:53)(cid:53)(cid:44)(cid:54)(cid:3)(cid:42)(cid:53)(cid:50)(cid:56)(cid:51)(cid:15)(cid:3)(cid:44)(cid:49)(cid:38)(cid:17)(cid:3)
`ARRIS GROUP, INC.
`(cid:44)(cid:51)(cid:53)(cid:21)(cid:19)(cid:20)(cid:24)(cid:16)(cid:19)(cid:19)(cid:25)(cid:22)(cid:24)(cid:15)(cid:3)(cid:83)(cid:17)(cid:3)(cid:23)(cid:3)(cid:82)(cid:73)(cid:3)(cid:21)(cid:28)(cid:23)
`IPR2015-00635, p. 4 of 294
`
`

`
`
`
`1.
`
`1.
`3.
`
`4.
`
`5.
`E.
`
`7.
`
`H.
`
`9.
`
`INTEDDUCIIDH
`
`DEFINITIONS
`EIGNHLLIHG P‘OH.I'lihT$
`
`Jn.DiI.'IR.E55I1'«lG
`
`t.‘.GDE."I'KJR£I STRLFCTEIRES
`CHANNEL DISCIPLINE
`
`RHHDCBH ICCESS PRHEOOJL
`
`HEGISTRHTIGH PRDGEDURE5
`
`E-IPLSIC |:'.'AI..I.. PROCEDURES
`
`10'.
`
`EHEHGENCY CELL PFIDCEDURES
`
`11.
`12.
`
`13.
`
`HI-.
`
`1'5.
`
`1-Eu,
`
`11‘.
`
`INCLUDE CALL FHDCEDURE5
`CALL DIVERSICIH PROCEDURES
`
`STATUS HEESFLGE PROCEDURES
`
`SHORT DATE HESSJIGE PHOCEUURE5
`
`DATE INTERRDGHTIDH PROCEDURES
`
`section :5.-served for additional short. data prncedurea
`mg. shun.
`
`5T.F|1‘I"DhR'D DATA. PRGCEDURE5
`
`APPEHIDIH. 1.
`
`Suqqented values for parnmetlrra.
`
`APPENDIX 2.
`APPEHDIJI: 3.
`
`APPENDIX 4.
`
`HPPENIJIK 5.
`AF-PEN1:IIx Er.
`
`APPEHDII
`
`‘I.
`
`The error control properties of the codewords.
`Pan algorithm for determining tins codeword crmylition
`sequence of a control ohannnl system codeword.
`Fm algorithm for generating fluid: It and B of
`the HARE codeword.
`BED coding.
`Reserved to: Ti.rru.nq of renpomian for standard data at
`customised rate.
`
`it
`
`other ideas ¢:nnai.+:h=.-red during the drafting of nation 1?
`[ntandnrd data} .
`
`(cid:36)(cid:53)(cid:53)(cid:44)(cid:54)(cid:3)(cid:42)(cid:53)(cid:50)(cid:56)(cid:51)(cid:15)(cid:3)(cid:44)(cid:49)(cid:38)(cid:17)(cid:3)
`ARRIS GROUP, INC.
`(cid:44)(cid:51)(cid:53)(cid:21)(cid:19)(cid:20)(cid:24)(cid:16)(cid:19)(cid:19)(cid:25)(cid:22)(cid:24)(cid:15)(cid:3)(cid:83)(cid:17)(cid:3)(cid:24)(cid:3)(cid:82)(cid:73)(cid:3)(cid:21)(cid:28)(cid:23)
`IPR2015-00635, p. 5 of 294
`
`O O
`
`0
`
`.
`
`.
`
`.
`
`.
`
`O
`
`0
`
`.
`
`0
`
`0
`
`.
`
`O
`
`.
`
`.
`
`.
`
`.
`
`.
`
`.
`
`O O
`
`0
`
`

`
`.1
`
`in I nignaulling Itanrdard for trunkod private land mobile radio
`HP'l'l32'J'
`nyatema.
`It defines the protocol rulea for cotnunlcatlon between a
`trunking lyltq.-n1 controller {T$C: and ulorr radio units.
`
`from
`The ltandard can be used to lmplamcnt a wide variotyr o! ayatama,
`small ayntoma with only a low radio channel: {ovon lin-gll-cl1I.nno1 oyatemn},
`through to largo networks which may he formed by thli interconnection of
`TECI.
`
`The protocol ofrera a broad ranoa of our tacllltloa and ayatem
`optiona. However. it la not necessary to implement all or tha Eacllltiea
`availahlo: an appropriate wheat or the protocol could be implemented.
`according to tho unns: roquiromnnta. Also,
`thorn la loop: for contamination
`for special roquirnmants, and provilion hal. boon undo for Eurthor
`atandardlaod facilities to be added to the protocol
`lo the future.
`
`The atandard defines only tho over-air nlgnalling and lnpolea only
`minimum constraints on ljrfltlfll design. ndditlonal apeclflcatlona will be
`roquirod for specific implementatlona, for example,
`to oetino:
`
`-
`-
`-
`
`the facilities that must be implemented
`parameter valuon
`a channel plan
`for a network. criteria for when a radio unit should ragiatnr.
`
`section 1.1 of this introduction doicribon the user Eacilltlea which
`
`{It does not doicribc additional
`oro oxplicitly provicl-Icl by tho protocol.
`Eacilitloa which may be offered in a radio unit but which do not require
`any spccific protoco1.]
`
`Section 1.2 doocriboo l'EH'I'|fl protocol foaturoo.
`available to oyaten: dooiqnorn.
`
`indicating the options
`
`Section 1.] provides an introduction to the operation of the protocol.
`
`Eubno-quent aoctio-no of this document contain the protocol definition.
`In moat of theme section. the protocol roleo tor the TSC and for radio
`unit: are spocitlnd noparately, hot with croaaa-referencing whore
`convoniont.
`
`(cid:36)(cid:53)(cid:53)(cid:44)(cid:54)(cid:3)(cid:42)(cid:53)(cid:50)(cid:56)(cid:51)(cid:15)(cid:3)(cid:44)(cid:49)(cid:38)(cid:17)(cid:3)
`ARRIS GROUP, INC.
`(cid:44)(cid:51)(cid:53)(cid:21)(cid:19)(cid:20)(cid:24)(cid:16)(cid:19)(cid:19)(cid:25)(cid:22)(cid:24)(cid:15)(cid:3)(cid:83)(cid:17)(cid:3)(cid:25)(cid:3)(cid:82)(cid:73)(cid:3)(cid:21)(cid:28)(cid:23)
`IPR2015-00635, p. 6 of 294
`
`Page 1-1
`
`

`
`1,]
`
`Egg; Iacilitiss
`
`The facilities available to users are outlined below.
`definition of the facilities, see the sections indicated.
`
`For a full
`
`lzfizl Eypgs of call
`
`The standard protocol enables radio unite to make the following types
`of call.
`
`a.
`
`fipeech call.
`
`{See section 9.}
`
`For group
`Speech calls may he requested with normal or high priority.
`calls.
`the calling party may opt for a conversational mode. where all
`parties are able to speak. or for an announcement mde where only the
`caller may speak.
`
`b.
`
`Data call. for the transmission of non-prescribed signalling.
`[see section 9.}
`
`Parameters are available to specify either normal or high priority
`and, for a group call, whether the called group members can reply.
`[Provision has been made for specifying a standard method of data
`communication in the future].
`
`c.
`
`Emergency call.
`
`[See section 1fl.}
`
`Parameters are available to specify either a speech or a data call
`and,
`for a group call. whether the called group members can reply.
`Also, a radio unit may request a special mode of emergency service
`previously arranged with the system;
`the TEC determines the required
`action by reference to the calling unit's address.
`
`d.
`
`Include call.
`
`[See section 11.}
`
`During a call. a unit may request that another party joins the call.
`This facility may be used to implement a conference call or Call
`Transfer.
`
`e.
`
`Status message.
`
`{See section 13.]
`
`Thirty-two different statue messages may be conveyed between units.
`The meanings of two of these messages are prescribed as a 'call-me-
`hack request" and “cancel previous ca1l—me—back request".
`The
`remaining thirty messages have user+defined meanings.
`{status
`messages can also he sent between radio units and the TSc.j
`
`f.
`
`short Data Heasaqe.
`
`{See section Ii.)
`
`Heeaages of up to 134 bits of free format data can be sent between
`units, or between units and the TSC.
`
`OOOOOOOOOOOOOOOCOOOOOOCI
`
`(cid:36)(cid:53)(cid:53)(cid:44)(cid:54)(cid:3)(cid:42)(cid:53)(cid:50)(cid:56)(cid:51)(cid:15)(cid:3)(cid:44)(cid:49)(cid:38)(cid:17)(cid:3)
`ARRIS GROUP, INC.
`(cid:44)(cid:51)(cid:53)(cid:21)(cid:19)(cid:20)(cid:24)(cid:16)(cid:19)(cid:19)(cid:25)(cid:22)(cid:24)(cid:15)(cid:3)(cid:83)(cid:17)(cid:3)(cid:26)(cid:3)(cid:82)(cid:73)(cid:3)(cid:21)(cid:28)(cid:23)
`IPR2015-00635, p. 7 of 294
`
`
`
`Page 1-2
`
`
`
`

`
` l
`
`A radio unit may request a call to any of the Eollouing called partiee
`[except for etatue nueeagee, which cannot be addreelend to Fill or FS’l1l'
`deetinatione or to grtrupejl
`
`-
`
`-
`-
`*
`
`an individual radio unit or line-connected unit
`
`I group, or all unite in the Inyetui
`a one: number. up to nine digite
`a '£*s'i'H number, up to 31 diqite.
`
`In addition, etatue neeeagee and short data neeeaqel may be lent to the
`TEE.
`
`the ‘me my plll a wide variety of information to
`During cell eel:-up.
`the caller,
`to indicate the pi-ogreee of the call.
`For example, it may
`indicate the reaeon for any delaye in call let-up or the reaaon for a call
`failure.
`
`A call request may be cancelled at any time.
`
`4.
`
`4.
`
`V
`
`E.’
`
`H radio unit may receive calls from a radio unit or line unit. or
`[except tor etatue cueeeegee]
`from a FAB: extension or the PSTN.
`In
`addition, atatue meeeagoa and ehort data eelaaoee may he received from the
`THC. For a call from a radio unit, a line unit or the T512,
`the calling
`addreee may be supplied to the celled unit.
`For a call from a Pam:
`extension or from the 95111, the calling gateway ie indicated ae the source
`of the call but the teller‘: number in not conveyed to the called unit.
`
`Incoming calle may he addressed to the unit individually or to a group
`to which it belonge.
`it radio unit may he a member or an arbitrary number
`of groupi;
`it-I group addreeeel can he choeen independently of ite
`individual addreee.
`
`for example by
`It radio unit may reluue to accept all incoming calla.
`menace of a "1:-uay" or "out+~o£—vehiclc" control. or incoming call: could he
`refused selectively, depending on the eour-:.'e of the call.
`If a user does
`not wieh to proceed with an incoming call immediately, he can indicate that
`he will call back later.
`
`Syeterne may be configured to alert a called individual and require him
`to indicate that he in ready, before a trafric channel
`in allocated for a
`call.
`
`.
`
`.4
`
`vrt
`
`e
`
`it may request that
`It a radio unit doee not with to receive calie.
`future calla addreeeed to it be redirected to a epecifiod alternative
`destination.
`A radio unit may also requeet redirection on behalf of a
`third party,
`for example, for a unit which in not equipped for call
`divereion. A radio unit calling is diverted party will be informed of the
`alternative deetination. to try; it may then re-make the call automatically,
`or it may give the ueer the option of deciding whether to call the
`alternative deetination. See eection 12 [or the full divereion facilitiee.
`
`(cid:36)(cid:53)(cid:53)(cid:44)(cid:54)(cid:3)(cid:42)(cid:53)(cid:50)(cid:56)(cid:51)(cid:15)(cid:3)(cid:44)(cid:49)(cid:38)(cid:17)(cid:3)
`ARRIS GROUP, INC.
`(cid:44)(cid:51)(cid:53)(cid:21)(cid:19)(cid:20)(cid:24)(cid:16)(cid:19)(cid:19)(cid:25)(cid:22)(cid:24)(cid:15)(cid:3)(cid:83)(cid:17)(cid:3)(cid:27)(cid:3)(cid:82)(cid:73)(cid:3)(cid:21)(cid:28)(cid:23)
`IPR2015-00635, p. 8 of 294
`
`Page 1-3
`
`
`
`

`
`-2
`
`t
`
`t
`
`es and reel
`
`t es
`
`1.2.1 System dimensions
`
`The numbering range of the protocol accommodates:
`
`- 1,s3s,soo addresses per system
`-
`IDE4 channel numhers
`
`-
`
`32165 system identity codes.
`
`.
`
`.
`
`ol
`
`The protocol uses signalling at 1205 bitfs with Fast Frequency Shift
`Keying {FFSK} suhcarrier modulation.
`It is designed for use by two-
`frequency half-duylex radio units and a duplex TEE.
`
`The signalling for setting up calls is transmitted on a 'oontrol‘
`channel.
`A TSC can be operated using either of two control channel
`strategies: dedicated or nonrdedicated.
`A dedicated system has a control
`channel permanently available for signalling, whereas a non-dedicated
`system may assign the control channel for traffic {speech or data
`communication} if all the other channels are in use.
`The use of a
`dedicated control channel
`is appropriate for a can with many channels.
`whereas a nonededicated control channel may be more appropriate for a TEE
`with only a iew channels.
`The protocol allows the use of either strategy.
`
`Broadcast messages are available to inform radio units of system
`information, such as the channels which the system may use for control
`signalling.
`
`one of the problems of mobile radio signalling systems is the clashing
`of messages from ditrerent radio units transmitting at the same time.
`The
`problems of clashing are controlled by an access protocol which offers high
`efficiency, stability and flexibility.
`[See section 1.3.3 and section 1.:
`
`interference is provided by labelling the
`Protection against
`signalling with a system identity code and,
`in some messages,
`the channel
`number,
`If heavy interference is encountered, control can be changed to a
`different channel.
`
`a customised fa11—back mode of
`To cope with system malfunction,
`operation may be defined by the system designer.
`
`;.g.g Call handling
`
`is designed for use by systems which queue calls that
`The protocol
`cannot be eet up immediately,
`for example,
`if no channel
`is currently
`available for traffic.
`
`is assigned for a call to an individual radio
`Before a traffic channel
`the T5: checks that the called unit is in radio contact,
`in order to
`unit,
`avoid wanted channel assignments.
`It may also check that the radio unit's
`operator is ready for the call,
`to avoid a traffic channel being assigned
`to an unmanned unit.
`
`(cid:36)(cid:53)(cid:53)(cid:44)(cid:54)(cid:3)(cid:42)(cid:53)(cid:50)(cid:56)(cid:51)(cid:15)(cid:3)(cid:44)(cid:49)(cid:38)(cid:17)(cid:3)
`ARRIS GROUP, INC.
`(cid:44)(cid:51)(cid:53)(cid:21)(cid:19)(cid:20)(cid:24)(cid:16)(cid:19)(cid:19)(cid:25)(cid:22)(cid:24)(cid:15)(cid:3)(cid:83)(cid:17)(cid:3)(cid:28)(cid:3)(cid:82)(cid:73)(cid:3)(cid:21)(cid:28)(cid:23)
`IPR2015-00635, p. 9 of 294
`
`
`
`Page 1-4
`
`

`
`call maintenance signalling in defined for prompt ralaaale of tratflc
`channel: at the and o! a converaatien. or in case communication in lost
`during a call.
`{an cc-ctlon 1.3.5 and anctlen 9.]
`
`he a precaution against fraudulent on of I crates: of an unauthorlaed
`radio unit,
`the ‘EEC may at any time Lnatruct a radio unit to tnneolt ita-
`uniqui Iirial numb-pr; comparison out
`the raclivld serial number with the
`expected value will aselat in the detection of fraudulent ueere.
`[See
`section 15.}
`
`l
`
`Thi ltandarcl leave: soap: for various Iaulti-lite Hidi-area coirirage
`technique: to he need.
`for example:
`
`-
`-
`-
`
`eynchronouefquaal-aynchroneuu operation
`a separate control channel at each lite
`a single control channel shared by time division.
`
`includes a reglltraticn llacilitjr to anilt the
`The protocol
`implementation of Inulti-aita ayatema and network: or ‘race: a radio unit can
`inform the ‘rec of it: location an it roam: between alter: or aryetena.
`[The
`system ldantlty code dietingulehee the alqnalllng {rota dltferant Iitee and
`eyetemej.
`The etandard defined algnalling procedurea for rcgletratlon
`[section B], but the criteria for reqietratlen will he ayatem-dependent.
`
`.
`
`It THC can broadcast information to enlist radio unit: hunting for a
`control channel when they roam: for example. it can announce the channele
`which may he need for control by ltaelf or by Tsca on adjacent altaa.
`
`(cid:36)(cid:53)(cid:53)(cid:44)(cid:54)(cid:3)(cid:42)(cid:53)(cid:50)(cid:56)(cid:51)(cid:15)(cid:3)(cid:44)(cid:49)(cid:38)(cid:17)(cid:3)
`ARRIS GROUP, INC.
`(cid:44)(cid:51)(cid:53)(cid:21)(cid:19)(cid:20)(cid:24)(cid:16)(cid:19)(cid:19)(cid:25)(cid:22)(cid:24)(cid:15)(cid:3)(cid:83)(cid:17)(cid:3)(cid:20)(cid:19)(cid:3)(cid:82)(cid:73)(cid:3)(cid:21)(cid:28)(cid:23)
`IPR2015-00635, p. 10 of 294
`
`Page 1-5
`
`

`
`
`
`Q
`
`This section provides an introduction to the operation of the protocol
`which, because of it: scope and flexibility.
`is necessarily complex. The
`section outlines the control channel structure.
`the random access protocol
`and some message exchange procedures tor call set-up.
`
`This section is intended only as a guide: it should not be regarded as
`I protocol specification. Readers should refer to the main body of the
`standard for the complete and precise definition.
`
`-3-
`
`ol cha
`
`'
`
`r
`
`u e
`
`The lignalling for setting up call: is transmitted on a "control"
`channel.
`Time on the control channel is divided into slots of duration
`
`[125 hits}. and one signalling message can be sent in each slot.
`1fl6.1 me
`The basic control channel signalling structure is illustrated in Figure
`1-1.
`
`[base etation transmit frequency]
`Signalling on the forward channel
`nominally continuous, with each slot comprising two 54-bit codewords,
`usually:
`
`is
`
`i]
`
`A Control Channel System codeword {CCSC].
`The cone identities the syste to radio unite and provides
`synchronisation for the following ‘address’ codeword.
`
`ii]
`
`in “address” codeword.
`
`an I1-'I.I-1-s:|u-I
`
`4-H-I.I-'In:I\.H-II-I-1
`
`in i-‘Ha Fi-uh r-nu-.nII.JI-WI-H5 n-I‘
`
`Il'|'l|'
`
`Innnnln-In
`
`3COOOCOOOCOOOI
`
`000
`
`L.
`
`(cid:36)(cid:53)(cid:53)(cid:44)(cid:54)(cid:3)(cid:42)(cid:53)(cid:50)(cid:56)(cid:51)(cid:15)(cid:3)(cid:44)(cid:49)(cid:38)(cid:17)(cid:3)
`ARRIS GROUP, INC.
`(cid:44)(cid:51)(cid:53)(cid:21)(cid:19)(cid:20)(cid:24)(cid:16)(cid:19)(cid:19)(cid:25)(cid:22)(cid:24)(cid:15)(cid:3)(cid:83)(cid:17)(cid:3)(cid:20)(cid:20)(cid:3)(cid:82)(cid:73)(cid:3)(cid:21)(cid:28)(cid:23)
`IPR2015-00635, p. 11 of 294
`
`
`
`

`
`
`
`The messages sent on a control channel may be classified as follows:
`
`aloha messages
`
`Requests
`
`"Ahoy" messages
`
`- Sent by the rec to invite and control
`random access.
`
`- sent by radio units to request
`callsftranssctlona.
`- sent by the ‘EEC to osoand a response from an
`addressed radio unit.
`
`- sent by the tan: and by radio units.
`acknowledgments
`- sent by the rec to allocate traffic channels.
`Go To channel messages
`single address messages - currently sent only by radio units.
`short data messages
`- fiant by the too and by radio units.
`Hisceilal-woos nlessagoo
`- Sent by the Inc for system control.
`
`some uses of these messages are illustrated in tho following sections.
`
` EIfl£l
`
`One of the problems of mobile radio signalling schemes is the clash of
`messages from different radio units transmitting at the same time.
`In this
`standard,
`the problems of clashing are controlled by a random access
`protocol which is based on slotted aloha, with a superimposed framing
`structure.
`The access protocol can he used to minimise access delays,
`ensure stability and maintain peak throughput under heavy traffic loads.
`
`The basic principle of the access protocol is described with reference
`to Figure 1-2. which illustrates signalling on a control channel.
`The Tao
`transmits a synchronisation message {indicated by ALB in Figure l—21 to
`invite radio units to send random access messages.
`The Jilbii message
`contains a parameter {H} which indicates the number of following timsllota.
`constituting a frame,
`that are available for access.
`If a frame is already
`in progress when a user initiates a call.
`the radio unit may send its
`random access message in the next slot. Dthsruise the unit waits for a
`frame to he started and than chooses a random slot from the frame for its
`
`message. A unit wishing to send a repeat transmission after an unsuccessful
`message {corrupted by fading or clashing} chooses again from a new frame.
`
`l slot
`<---i
`
`TSC to
`
`radio unite
`
`Radio units
`to TSC
`
`frame
`
`frame
`
`
`
`(cid:36)(cid:53)(cid:53)(cid:44)(cid:54)(cid:3)(cid:42)(cid:53)(cid:50)(cid:56)(cid:51)(cid:15)(cid:3)(cid:44)(cid:49)(cid:38)(cid:17)(cid:3)
`ARRIS GROUP, INC.
`(cid:44)(cid:51)(cid:53)(cid:21)(cid:19)(cid:20)(cid:24)(cid:16)(cid:19)(cid:19)(cid:25)(cid:22)(cid:24)(cid:15)(cid:3)(cid:83)(cid:17)(cid:3)(cid:20)(cid:21)(cid:3)(cid:82)(cid:73)(cid:3)(cid:21)(cid:28)(cid:23)
`IPR2015-00635, p. 12 of 294
`
`

`
`.
`
`.
`
`u
`
`e o
`
`the
`
`a doe
`
`cc an
`
`to ocol
`
`The main featuree of the ICCEEI protocol are an followa:
`
`a}
`
`b]
`
`o:
`
`The Tsc can monitor activity on the control channel and can optimise
`the eyatem performance by varying the framelenoth to prevent exceaaive
`clashing and to minimiee acceaa delaya. Figure 1-3 illuatratea an
`example of random acceae control.
`
`The aignaliinq overhead for random accent control it kept email by
`allowing acknowledgement: and Go To Channel messages to contain the
`framalength parameter {N}. no that frames can be marked without
`requiring an explicit hloha meeeaqe.
`For example, see Figure 1-3-
`
`the Tsc may tranenit meenagea that demand a
`During a frame,
`reeponee from a epeclfied radio unit. There outbound meeaaqee
`inhibit random access in the following elot, and eo reserve the
`clot for the unit‘e reply.
`
`d}
`
`The TEE may reeerue frames for:
`
`-
`
`epeeific typee of call request, by meane of epecific Aloha meaeegee
`[for instance,
`the Aloha meeeage ALHE invites emergency calla
`only};
`
`-
`
`euheete of the radio unit population [eubdivieion by address].
`
`TEE to
`radio unite
`
`Radio unite
`
`to TSC
`
`RQS1
`
`RQ52
`
`H?! ‘I.__.-’
`frame frame
`
`1
`
`frame
`
`I "u._! '|.___.u’
`frame frame
`
`The TSC detecta the claehinq of requests RG51 and R932. and
`marke a longer frame {with meaeage ALH[2j].
`The radio units
`repeat their requests and,
`in this example. choose different
`alote.
`Each request
`is acknowledged in the following elot.
`
`ALH{D] doee not mark a frame.
`
`fl¢KQ{1: acknowledges a requent and aleo marks a new frame.
`
`In the absence of clashing.
`
`the framelength may be reduced.
`
`F1 . 1-3
`
`Exam 1e of
`
`random ooee
`
`o tr
`
`(cid:36)(cid:53)(cid:53)(cid:44)(cid:54)(cid:3)(cid:42)(cid:53)(cid:50)(cid:56)(cid:51)(cid:15)(cid:3)(cid:44)(cid:49)(cid:38)(cid:17)(cid:3)
`ARRIS GROUP, INC.
`(cid:44)(cid:51)(cid:53)(cid:21)(cid:19)(cid:20)(cid:24)(cid:16)(cid:19)(cid:19)(cid:25)(cid:22)(cid:24)(cid:15)(cid:3)(cid:83)(cid:17)(cid:3)(cid:20)(cid:22)(cid:3)(cid:82)(cid:73)(cid:3)(cid:21)(cid:28)(cid:23)
`IPR2015-00635, p. 13 of 294
`
`
`
`Page P3
`
`

`
`
`
`l¢1
`
`II. unit addreee ia a ED-bit numhar ccmpriaino two lielda: a Tnbit
`prefix and a 13-bit indent.
`tnormally, all meme-are of a fleet will be
`allocated the eaee prefix.)
`The diviaion into prefix and ident alloea moat
`meeeagea to accommodate two adtlrel-eel. the calling and called party, by
`including the prefix only once.
`For instance. cell raqueata and Go To
`channel meet:-gen contain two idente and only one prefix.
`
`For a call to a unit with the eame prefix, a request meeaage containe
`all the information neceeeary to make the call. However. for a call to a
`unit with a different prefix,
`the call details cannot be accommodated in a
`eingle addreea codeword:
`thia type of call require: the use of ‘extended
`addreeeintr proceduree {as do Io-me FAB! and meet FSTH calla].
`
`The preciee eignalling required for a call depentla on the type of call
`and on the deeign of the TEC;
`[the Itandard doel not prescribe the TSC
`algorithms} . Thie eecti-on contains come examplee of meeaage exchange
`eequencea- Note that. although not shown in the examples, meeeagee will be
`retranemitted in the caee of corruption by propagation en.-ore or rollieion.
`
`Exarnplee of meaaage exchange aequencea for call eet-up are preeented
`in aectione 1.3.5.1 to 1.3.5.3. Thole examplee eh-on control channel
`signalling, for:
`
`- call raqueete
`-
`instruction to aend extended addreaa information
`
`-
`-
`
`checking availability of radio unite
`traffic channel allocation.
`
`Signalling ie aleo eent on an allocated traffic channel, for call
`maintenance and call clear-down.
`For
`inetance:
`
`a)
`
`bin
`
`c}
`
`To aeaiat call maintenance, a radio unit eende a 'Pre-eeel ort-
`meeeage at the end of each epeech tranamiaeion.
`The eyetem may
`alao require the unit to start each epeecn tranlieiaeion with a
`"Preaael On" meeeaqe and to eend cell maintenance meeeagee
`periodically within the tranemieeion.
`
`The calling unit in a group call, or both unite in an. individual
`cell. Bend "DIieconn.ect" meeeaqel to indicate end-of-channel-uee
`when the ueer goee on-hook or equivalent.
`
`The Tao aanda CLEAR meeeagee to clear down a call [after receiving
`a valid Disconnect meeeage or if a timevout hae expired].
`
`However,
`
`the exampiea do not cover traffic channel eignaliinq.
`
`The final example Ieection l.El.5.4] illustrate: the tranemieeion of a
`ehort data meeeage. Thie type of treneaction doea not one a traffic
`channel: it requiree control channel eignalling only.
`
`(cid:36)(cid:53)(cid:53)(cid:44)(cid:54)(cid:3)(cid:42)(cid:53)(cid:50)(cid:56)(cid:51)(cid:15)(cid:3)(cid:44)(cid:49)(cid:38)(cid:17)(cid:3)
`ARRIS GROUP, INC.
`(cid:44)(cid:51)(cid:53)(cid:21)(cid:19)(cid:20)(cid:24)(cid:16)(cid:19)(cid:19)(cid:25)(cid:22)(cid:24)(cid:15)(cid:3)(cid:83)(cid:17)(cid:3)(cid:20)(cid:23)(cid:3)(cid:82)(cid:73)(cid:3)(cid:21)(cid:28)(cid:23)
`|PR2015-00635, p. 14 of 294
`
`Page 1-‘!
`
`

`
`.
`
`5.1
`
`xam le: radio un't alle
`
`Figure 1+4 illustrates a meaeage eequence on a control channel to eet
`up a group cell between radio unite with the name prefix.
`
`The eequence includee call requeet and channel allocation eignalling.
`(Fer group calla. an availability check on the called unite in not
`performed.fl
`In this example, all traffic channels are in uee when the call
`in requeeted and an the call
`la queued.
`
`111
`
`RLH
`{1}
`
`HCKQ
`
`TEE to RUE
`
`RUE to TEC
`
`'l__:" "I.__.v’
`frame frame
`
`‘~.___.«'
`‘~._,.«'
`frame frame
`
`1.
`
`ALH
`
`: General Aloha invitation [one-slot frame}.
`
`2.
`
`RQ5
`
`: The calling radio unit tranemite its request, complying
`with the random access protocol.
`
`3.
`
`informing the
`REKQ : The TSC acknowledgee the RQS meaeage.
`calling unit that the call has been queued.
`
`4.
`
`GTE
`
`the TSC eende the
`is available.
`: when a traffic channel
`Go To channel command. addreaeed to the calling unit and
`called group; thie meaeage instructs the unite to ewitch
`to the traffic channel for their convereation.
`In this
`
`example the ETC is repeated.
`
`for added reliability.
`
`Fi
`
`.
`
`l-4
`
`Common- refix rcu call
`
`for
`from the TEC are available if,
`Alternative acknowledgement:
`instance,
`the call request
`in invalid or the eyetem in overloaded.
`
`If a traffic channel it available when a group call is requested then
`the Tsc may omit the ACKQ and eend the ETC command immediately.
`
`In thie example the GTE meaaage ie repeated immediately. However.
`repeat meeeagee may be delayed for other signalling.
`
`(cid:36)(cid:53)(cid:53)(cid:44)(cid:54)(cid:3)(cid:42)(cid:53)(cid:50)(cid:56)(cid:51)(cid:15)(cid:3)(cid:44)(cid:49)(cid:38)(cid:17)(cid:3)
`ARRIS GROUP, INC.
`(cid:44)(cid:51)(cid:53)(cid:21)(cid:19)(cid:20)(cid:24)(cid:16)(cid:19)(cid:19)(cid:25)(cid:22)(cid:24)(cid:15)(cid:3)(cid:83)(cid:17)(cid:3)(cid:20)(cid:24)(cid:3)(cid:82)(cid:73)(cid:3)(cid:21)(cid:28)(cid:23)
`IPR2015-00635, p. 15 of 294
`
`
`
`Page 1—1n
`
`

`
`
`
`riguro 1-5 iiluatrataa a uoaaago aoquanco on a control channel to not
`up a call hotuoon two radio unit-a with tho lam proiix.
`'l'bo Ioguonco
`includoo cal]. roqulot, availability chock and channol allocation
`signalling.
`
`TEE tn HUI
`
`BUS to TSC
`
`JLLH
`
`{3}
`
`H _ J "-._
`from-o
`
`lrano
`
`I
`I ‘-.__.
`from-o
`
`1.
`
`JILH : G-onoral Aloha invitation {throo-alot fruno].
`
`2.
`
`3-
`
`RS215
`
`: Random accooo call roguoot.
`
`I-H2‘
`
`ai-
`
`availability chock inoaaago
`-
`acknowlotlgoa the MG uoaaago
`-
`domancll a roaponll from tho cailotl radio unit
`Ijthoroby checking uhothor tho called unit
`io in radio contact}
`inhibito random accent in tho next slot.
`
`v
`
`4 .
`
`EEK
`
`Ac!-Lnowlodqoinant from tho cailod radio unit,
`cont
`in tho roaorvod olot.
`
`5.
`
`GTE : Go To Channel uaaaaga instructing both radio unita to
`switch to the opocifiad: traffic channel for thoir call.
`In this oxamplo tho GTE in rap-aatod.
`for adtlo-ti roliahility.
`
`tha callod unit in: in radio contact and thorotoro
`in thin onamplo.
`It tho callotl unit cannot ha contacted,
`tho TEE may
`rolpontlo to tho Jul-IT.
`indicato tho failura to tho calling unit by aantling acknoulodgomont BURY.
`
`the Tic chacka only that the
`In both thia and tho following cxamplo,
`callod unit in in radio contact .'n-ofo-to allocating a traffic channll. Tho
`TEL‘ may also chock uhothor tho callod no-or io roady;
`if ho in not,
`tho unit
`roaponda with acknowlodgomont act: and taken action to alort him. Than.
`Hhon tho two: in ready to rocaivo the call,
`tho unit may no-nd a Itat-on
`moooago IRDQ1 to inform tho TEE.
`
`in
`Tho ALIH-D] moaaago in them! onamploo it uaod aa a "d1.u1'n1]r" moaaago.
`aloha carrying no signalling ralavant to tho aaamplc.
`In practica. than
`oloto may ho uaocl for aignalling for anothor call, or for broadcaot
`moooagoo which contain information about oyotorr. paromotoro}.
`
`(cid:36)(cid:53)(cid:53)(cid:44)(cid:54)(cid:3)(cid:42)(cid:53)(cid:50)(cid:56)(cid:51)(cid:15)(cid:3)(cid:44)(cid:49)(cid:38)(cid:17)(cid:3)
`ARRIS GROUP, INC.
`(cid:44)(cid:51)(cid:53)(cid:21)(cid:19)(cid:20)(cid:24)(cid:16)(cid:19)(cid:19)(cid:25)(cid:22)(cid:24)(cid:15)(cid:3)(cid:83)(cid:17)(cid:3)(cid:20)(cid:25)(cid:3)(cid:82)(cid:73)(cid:3)(cid:21)(cid:28)(cid:23)
`IPR2015-00635, p. 16 of 294
`
`Pago 1-11
`
`
`
`

`
`1.3.5.
`
`-
`
`die unit calls a unit with a differs t
`
`r E
`
`Figure 1-5 illustrates a message sequence on a control channel to set
`up a call between two radio units with different prefixes.
`
`The sequence includes call request, availability check and channel
`allocation signalling gas in the previous example}. However.
`this sequence
`has an extra phase: after receiving the R95 message,
`the TEC sends AHIC to
`invite the calling unit to transmit the full called address.
`also.
`separate GTE messages instruct the two unite. because GTE contains only one
`prefix.
`
`TSC to Rfls
`
`1.
`
`ELH
`
`2.
`
`see
`
`3.
`
`HHYC
`
`4.
`
`SAHIS
`
`5.
`
`AH!
`
`6.
`
`ncfl
`
`1.
`
`ETC
`
`frame
`
`frame
`
`frame
`
`General Aloha invitation [four-slot frame}.
`
`Random access request for en interprefix call.
`[The request contains the calling unit's address
`{prefixfident}. but the called ident
`is set to a
`special "gateway" ident to indicate that extended
`addressing procedures are needed.j
`
`Short data invitation message
`-
`acknowledges the R95 message
`~
`instructs the calling unit to send the called address
`inhibits random access in the next slot.
`
`H
`
`Single address Message from the calling radio unit.
`containing the address [prefixfident] of the called unit.
`
`Availability check message demanding a response from
`the called radio unit.
`
`the availability check is a
`In this example.
`single-ccdewcrd message i.e. the address of the
`calling unit is not supplied.
`
`Acknowledgement from the called radio unit.
`
`u
`
`n-
`
`1-:
`
`on
`
`: do To channel message instructing the called radio unit
`to switch to the specified traffic channel for the call.
`
`a.
`
`ETC
`
`In
`
`Go To Channel message instructing the calling radio unit
`to switch to the specified channel for the call.
`
`?'
`
`. 1-B
`
`Inter refix indivi ual
`
`(cid:36)(cid:53)(cid:53)(cid:44)(cid:54)(cid:3)(cid:42)(cid:53)(cid:50)(cid:56)(cid:51)(cid:15)(cid:3)(cid:44)(cid:49)(cid:38)(cid:17)(cid:3)
`ARRIS GROUP, INC.
`(cid:44)(cid:51)(cid:53)(cid:21)(cid:19)(cid:20)(cid:24)(cid:16)(cid:19)(cid:19)(cid:25)(cid:22)(cid:24)(cid:15)(cid:3)(cid:83)(cid:17)(cid:3)(cid:20)(cid:26)(cid:3)(cid:82)(cid:73)(cid:3)(cid:21)(cid:28)(cid:23)
`IPR2015-00635, p. 17 of 294
`
`
`
`F-199 1-43
`
`

`
`
`
`d
`
`E
`
`...
`
`:
`
`rigura 1~7 illustrates a message sequence on a control channel for
`sending a short data message fro one radio unit to another radio unit.
`thie Ixunple,
`the data meeaage comprises an address codeword and two
`appended data codnuncde; {each of the data oodeworda contain: 46 hits of
`free format data}.
`
`In
`
`the radio unit sends its request; the T5: instructs
`In the sequence.
`the unit
`to send the data message.
`forwards the data message to the called
`unit and than indicates the antenna of the tranlactien to the calling unit.
`
` TS: to Rue
`
`Rile to T5-E
`
`fl
`
`data
`
`‘I.
`
`I ‘I._a'
`
`frame frame
`
`'*._j!
`
`‘I.__f ‘u_I
`
`frame
`
`frame frame
`
`1.
`
`ALI-I
`
`: General Aloha invitation {tune-Blot frarney.
`
`2.
`
`RQC
`
`:
`
`Random access request to