`1111111111111111 11111 1111111111 111111111111111 111111111111111
`I
`
`IIIII IIII IIII
`
`US008774104B2
`
`(IO) Patent No.:
`US 8,774,104 B2
`
`c12) United States Patent
`
`(45)Date of Patent:
`
`Pelletier et al.
`
`Jul. 8, 2014
`
`(54)METHOD AND APPARATUS FOR
`(52)U.S. Cl.
`CPC ..................................... H04W 28104 (2013.01)
`
`
`TERMINATING TRANSMISSION OF A
`
`
`
`USPC ............................ 370/329; 370/338; 455/450
`MESSAGE IN AN ENHANCED RANDOM
`ACCESS CHANNEL
`
`(58) Field of Classification Search
`
`
`USPC .......... 370/328, 329, 338, 341, 348; 455/464,
`(75)Inventors: Benoit Pelletier, Roxboro (CA); Diana
`
`
`
`
`455/450; 709/226, 229
`
`Pani, Montreal (CA); Rocco
`
`
`See application file for complete search history.
`
`DiGirolamo, Laval (CA); Christopher
`
`R.Cave, Verdun (CA); Vincent Roy,
`(56)
`
`
`Montreal (CA); Paul Marinier, Brossard
`
`
`
`(CA); Eldad M. Zeira, Huntington, NY
`(US)
`
`
`
`References Cited
`
`
`
`U.S. PATENT DOCUMENTS
`
`6,167,248 A * 12/2000 Hamalainen et al. ......... 455/403
`
`
`
`
`
`
`
`6,246,692 Bl* 6/2001 Dai et al ....................... 370/438
`(73)Assignee: Signal Trust for Wireless Innovation,
`
`
`
`
`Wilmington, DE (US)
`
`(Continued)
`
`( *) Notice: Subject to any disclaimer, the term ofthis
`
`
`
`
`
`
`patent is extended or adjusted under 35
`CA
`
`
`U.S.C. 154(b) by 547 days.
`EP
`
`
`
`(21) Appl. No.: 12/238,910
`
`
`
`(22)Filed:Sep.26,2008
`
`FOREIGN PATENT DOCUMENTS
`
`2 615 915
`3/2004
`
`1796416 Al 6/2007
`
`(Continued)
`
`OTHER PUBLICATIONS
`
`(65)
`
`Ericsson, "Implicit release for enhanced uplink in CELL_FACH,"
`
`
`Prior Publication Data
`
`
`3GPP TSG RANWG2 #6lbis, Rl-081501 (Mar. 31-Apr. 8, 2008).
`
`
`
`
`
`US 2009/0086671 Al Apr. 2, 2009
`
`(Continued)
`
`
`
`
`
`Related U.S. Application Data
`
`Primary Examiner - Kan Yuen
`
`
`
`
`
`(60) Provisional application No. 60/975,985, filed on Sep.
`
`
`
`
`
`28, 2007, provisional application No. 60/982,528,
`(57)
`ABSTRACT
`
`
`filed on Oct. 25, 2007, provisional application No.
`
`
`61/018,999, filed on Jan. 4, 2008, provisional
`A method and an apparatus is provided for terminating an
`
`
`
`
`
`application No. 61/025,441, filed on Feb. 1, 2008,
`
`
`
`
`
`enhanced random access channel (E-RACH) message in an
`
`
`provisional application No. 61/038,576, filed on Mar.
`
`
`
`E-RACH transmission. Triggers for terminating the E-RACH
`
`21, 2008, provisional application No. 61/074,288,
`
`
`
`
`message are provided. The actions upon termination of the
`
`
`filed on Jun. 20, 2008, provisional application No.
`
`
`
`
`E-RACH messages are provided to release enhanced dedi­
`
`61/083,409, filed on Jul. 24, 2008.
`
`
`cated channel (E-DCH) resources while in cell forward
`
`
`
`
`
`access channel (CELL_FACH) state or transition to cell dedi­
`
`
`cated channel (CELL_DCH) state.
`
`(74)Attorney, Agent, or Firm - Volpe and Koenig, P.C.
`
`(51)
`Int. Cl.
`H04W4/00
`
`(2009.01)
`
`H04W28/04 (2009.01)
`
`
`
`10 Claims, 9 Drawing Sheets
`
`
`
`605
`
`600
`
`TRANSMIT DATA FROM BUFFER
`
`NO
`
`620
`
`RELEASE E-DCH RESOURCES 630
`
`IPR2022-00648
`Apple EX1019 Page 1
`
`

`

`US 8,774,104 B2
`
`Page 2
`
`(56)
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`Apple EX1019 Page 2
`
`

`

`US 8,774,104 B2
`
`Page 3
`
`(56)
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`
`
`
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`
`International Patent Application No. PCT/US2008/077904: Notifi­
`Third Generation Partnership Project, "Technical Specification
`
`
`
`
`
`
`
`
`cation of Transmittal oflnternational Preliminary Report on Patent­
`
`
`
`Group Radio Access Network; Physical channels and mapping of
`
`
`ability, Mar. 15, 2010, 9 pages.
`
`
`
`
`
`transport channels onto physical channels (FDD) (Release 7)," 3GPP
`Infineon Technologies, "Multiplexing option selection in case of
`
`
`
`
`
`TS 25.211 V7.6.0 (May 2008).
`
`
`E_DCH_ TRANSMISSION equal FALSE," 3GPP TSG-RANWG2
`Third Generation Partnership Project, "Technical Specification
`
`
`
`
`
`
`
`Meeting #58, Rl-072054, Kobe, Japan, (May 7-11, 2007).
`
`
`
`
`Group Radio Access Network; Enhanced uplink; Overall descrip­
`
`
`
`QUALCOMM Europe, "Layer 1/2 aspects for enhanced UL for
`
`
`tion; Stage 2 (Release 7)," 3GPP TS 25.319 V7.6.0 (May 2008).
`
`
`CELL_FACH," 3GPP TSG-RAN WG2 #59bis, Rl-074390 (Oct
`
`
`
`
`Third Generation Partnership Project; "Technical Specification
`8-12, 2007).
`
`
`
`Group Radio Access Network; UTRAN lub/lur interface user plane
`
`
`
`Third Generation Partnership Project Work Area, "Enhanced Uplink
`
`
`
`protocol for DCH data streams (Release 1999)," 3GPP TS 25.427
`for CELL_FACH State in FDD", TSG-RAN #37 Meeting,
`
`V3.l l.0 (Dec. 2003).
`
`
`RP-070677, (Riga, Latvia, Sep. 11-14, 2007).
`Third Generation Partnership Project; "Technical Specification
`
`
`
`
`
`
`
`Third Generation Partnership Project; "Technical Specification
`
`
`
`Group Radio Access Network; UTRAN lub/lur interface user plane
`
`
`Group Radio Access Network; UTRAN lur interface user plane pro­
`
`
`
`protocol for DCH data streams (Release 4)," 3GPP TS 25.427 V4.5.0
`
`
`
`
`
`tocols for Common Transport Channel data streams (Release 1999),"
`(Dec. 2003).
`
`3GPP TS 25.425 V3.8.0 (Dec. 2003).
`
`IPR2022-00648
`Apple EX1019 Page 3
`
`

`

`US 8,774,104 B2
`
`Page 4
`
`
`
`protocol for DCH data streams (Release 6)," 3GPP TS 25.427 V6.8.0
`
`
`
`(56)
`
`References Cited
`
`OTHER PUBLICATIONS
`
`
`
`
`
`(Dec. 2006).
`Third Generation Partnership Project; "Technical Specification
`
`
`
`
`
`
`Group Radio Access Network; UTRAN lub/lur interface user plane
`
`
`
`Third Generation Partnership Project; "Technical Specification
`
`
`
`
`
`protocol for DCH data streams (Release 7)," 3GPP TS 25.427 V7.5.0
`
`
`Group Radio Access Network; UTRAN lub/lur interface user plane
`(Sep. 2007).
`
`
`
`protocol for DCH data streams (Release 5)," 3GPP TS 25 .4 27 V 5. 5. 0
`(Jun. 2005).
`Third Generation Partnership Project; "Technical Specification
`
`
`
`*cited by examiner
`
`
`Group Radio Access Network; UTRAN lub/lur interface user plane
`
`IPR2022-00648
`Apple EX1019 Page 4
`
`

`

`U.S. Patent Jul. 8, 2014
`
`Sheet 1 of 9
`
`US 8,774,104 B2
`
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`IPR2022-00648
`Apple EX1019 Page 5
`
`

`

`U.S. Patent
`
`Sheet 2 of 9
`Jul. 8, 2014
`
`US 8,774,104 B2
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`IPR2022-00648
`Apple EX1019 Page 6
`
`

`

`U.S. Patent Jul. 8, 2014
`
`
`US 8,774,104 B2
`Sheet 3 of 9
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`
`IPR2022-00648
`Apple EX1019 Page 7
`
`

`

`U.S. Patent Jul. 8, 2014
`
`
`US 8,774,104 B2
`Sheet 4 of 9
`
`Wn::::
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`
`IPR2022-00648
`Apple EX1019 Page 8
`
`

`

`U.S. Patent Jul. 8, 2014
`
`
`US 8,774,104 B2
`Sheet 5 of 9
`
`/501
`
`AN ACK ASSOCIATED TO PREAMBLE
`
`SIGNATURE IS RECEIVED ON
`AICH/E-AICH
`/502
`
`RRC PROVIDES MAC WITH THE
`TIMER VALUES, AFTER RECEIVING .. ,...
`THE E-DCH RESOURCE INDEX
`/503
`
`WTRU STARTS THE FIRST DPCCH
`PREAMBLE TRANSMISSION
`/504
`
`...
`
`,,..
`
`TIMER
`STARTS
`
`INITIAL DPCCH TRANSMISSION IS
`COMPLETED AFTER E-DCH
`
`TRANSMISSION BACKOFF TTls OR ...
`THE FIRST MAC POU IS PASSED TO
`THE PHY LAYER
`/505
`
`,...
`
`WTRU STARTS E-DCH
`TRANSMISSION
`
`..
`,...
`
`FIG. 5
`
`IPR2022-00648
`Apple EX1019 Page 9
`
`

`

`
`U.S. Patent Jul. 8, 2014
`Sheet 6 of 9
`
`US 8,774,104 B2
`
`TRANSMIT DATA FROM BUFFER
`
`605
`
`NO
`
`NO
`
`YES
`
`TRANSMIT SI WITH A TEBS
`FIELD=O
`
`620
`
`NO
`
`YES
`
`RELEASE E-DCH RESOURCES
`
`630
`
`FIG. 6
`
`IPR2022-00648
`Apple EX1019 Page 10
`
`

`

`U.S. Patent Jul. 8, 2014
`
`
`US 8,774,104 B2
`Sheet 7 of 9
`
`700
`
`RECEIVE INITIAL SI WITH TEBS
`
`705
`
`NO
`
`YES
`
`WAIT UNTIL HARO BUFFER
`IS EMPTY
`
`715
`
`RELEASE E-DCH RESOURCES
`
`720
`
`FIG. 7
`
`IPR2022-00648
`Apple EX1019 Page 11
`
`

`

`
`U.S. Patent Jul. 8, 2014
`
`Sheet 8 of 9 US 8,774,104 B2
`
`Wo::
`<( C)
`(l)w
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`:s:
`
`IPR2022-00648
`Apple EX1019 Page 12
`
`

`

`U.S. Patent Jul. 8, 2014
`
`
`US 8,774,104 B2
`Sheet 9 of 9
`
`900
`
`RECEIVE AN E-RACH PROCESS
`� 905
`
`TERMINATION SIGNAL
`
`�,
`
`STOP E-AGCH, E-RGCH, AND
`E-HICH RECEPTION PROCEDURES
`
`910
`
`�,
`
`STOP ANY E-DPCCH AND E-DPDCH
`� 915
`TRANSMISSION
`
`�,
`PERFORM MAC
`RESET PROCEDURES
`
`i------
`
`920
`
`�,
`
`VARIABLE 925
`RESET CURRENT_ TSN
`
`,,
`
`FLUSH HARO BUFFERS
`
`930
`
`FIG. 9
`
`IPR2022-00648
`Apple EX1019 Page 13
`
`

`

`1
`METHOD AND APPARATUS FOR
`
`
`
`
`
`TERMINATING TRANSMISSION OF A
`
`
`
`tion.
`
`US 8,774,104 B2
`2
`ing up the power of the transmission until it receives an initial
`
`
`
`
`
`resource assigmn ent. The WTRU may also perform collision
`
`
`
`
`detection and resolution, if other WTRUs are attempting to
`
`access the RACH during this time. Once the WTRU has
`
`
`
`5 received permission to access the RACH, the WTRU may
`
`
`
`
`transmit data until the resources are released or the WTRU
`
`
`transitions to another state.
`As mentioned above, it was proposed to use the E-DCH in
`
`
`
`
`
`This application claims the benefit of U.S. Provisional
`
`
`a CELL_FACH state to increase the data rate of the shared
`
`Application No. 60/975,985 filed on Sep. 28, 2007; U.S. 10
`
`
`
`
`
`channel. However, in the current standard, there are no meth­
`Provisional Application No. 60/982,528 filed on Oct. 25,
`
`
`
`
`
`ods to terminate the E-RACH message phase. Accordingly, it
`
`2007; U.S. Provisional Application No. 61/018,999, filed on
`
`
`
`
`
`would be beneficial to provide a method and apparatus to
`Jan. 4, 2008; U.S. Provisional Application No. 61/025,441
`
`
`
`
`terminate an E-RACH message phase in an E-RACH.
`
`filed on Feb. 1, 2008; U.S. Provisional Application No.
`
`
`61/038,576 filed on Mar. 21, 2008; U.S. Provisional Appli-15
`
`
`
`cation No. 61/074,288 filed on Jun. 20, 2008; and U.S. Pro­
`visional Application No. 61/083,409 filed on Jul. 24, 2008, A method and an apparatus is provided for terminating an
`
`
`
`
`
`
`
`
`
`
`
`
`
`which is incorporated by reference as if fully set forth. E-RACH message in an E-RACH transmission. Triggers for
`
`
`
`terminating the E-RACH message are also provided. The
`
`
`
`
`20 actions upon termination of the E-RACH messages or tran­
`
`
`
`
`sition to CELL_DCH state are provided in order to release the
`The present application is related to wireless communica­
`
`
`
`shared E-DCH resources while in the CELL_FACH state.
`
`
`A method for terminating an enhanced random access
`
`
`
`channel (E-RACH) message in an E-RACH transmission
`
`
`
`
`25 determining that a buffer is empty; triggering a transmission
`
`
`of a scheduling information (SI) with the value of total
`In wireless communications systems, access to radio
`
`
`
`
`
`enhanced dedicated channel (E-DCH) buffer status (TEBS)
`
`
`resources is controlled by a radio network. When a wireless
`
`
`
`equal to zero; determining last hybrid automatic repeat
`
`
`
`
`transmit receive unit (WTRU) has data to transmit to the
`
`
`
`request (HARQ) data transmission; and releasing the E-DCH
`
`
`
`network, the WTRU requires access to the radio resources
`
`
`30 resources allocation is provided.
`
`
`
`before transmitting its data payload. In a Third Generation
`
`
`A method for terminating an enhanced random access
`
`
`Partnership Project (3GPP) network, the WTRU may trans-
`
`
`
`channel (E-RACH) message in an E-RACH transmission
`
`
`
`
`mit on the uplink using a contentious channel known as a
`
`where the network waits until a H ARQ buffer is empty and
`random access channel (RACH). Because access to the
`
`
`
`
`
`when the SI with a value of zero is received, the resources are
`RACH is contentious, a collision might occur when multiple
`
`
`35 released.
`
`
`WTRUs are accessing the resources simultaneously.
`
`
`The current RACH access procedure in the 3GPP com­
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`
`
`
`prises a preamble phase with power ramp-up, followed by
`
`
`
`
`channel acquisition information and message transmission
`A more detailed understanding may be had from the fol­
`
`
`
`
`
`
`for random access. Because the RACH is a shared channel, in 40
`
`
`
`lowing description, given by way of example and to be under­
`
`
`
`
`order to avoid WTRU s holding the shared radio resource for
`
`stood in conjunction with the accompanying drawings
`
`
`
`a long time, only relatively short message payloads are trans­
`wherein:
`
`
`
`mitted on the RACH; this leads to a relatively small data rate.
`FIG.1 is a diagramofanE-RACH access withanE-DCH;
`
`
`
`
`The RACH is thus used for the transmission of short control
`
`
`
`FIG. 2 shows a wireless communication system;
`
`
`
`
`messages. Typically, the WTRU s demanding larger data rates 45
`
`
`FIG. 3 is a functional block diagram of a WTRU and the
`
`
`may be configured by the network to use dedicated resources.
`
`
`
`
`base station of the wireless communication system shown in
`
`
`The data rate provided by the RACH is sufficient for the
`FIG. 2;
`
`
`
`
`transmission of short control messages supporting mostly
`
`
`
`
`
`speech communications, however it may be inefficient for
`and de-allocation;
`
`
`
`
`transmission of data messages associated to the new non
`FIG. 5 is a diagram of triggers for starting the timer that the
`
`
`
`50
`
`
`
`
`
`real-time data services such as internet browsing, e-mail, etc.
`
`
`WTRU may initiate for the timers;
`
`
`
`
`For such data services, the traffic is ruptured by nature and
`
`
`FIG. 6 is a flow diagram of a method to release E-DCH
`
`
`
`long periods ofinactivity may exist between successive trans­
`
`
`
`
`resources based on the status of a WTRU' s queue or buffer;
`
`
`
`
`
`missions. For example, applications requiring frequent trans­
`
`
`FIG. 7 is a flow diagram of a network configu red to deter­
`
`
`
`mission of keep-alive messages, may result in an inefficient
`
`
`mine termination of an E-RACH message transmission;
`55
`
`
`
`
`utilization of dedicated resources. In such cases, it may be
`
`
`
`FIG. 8 is a flow diagram ofE-DCH resources release when
`
`
`
`advantageous for the network to use shared resources for data
`
`
`
`the WTRU transitions from the CELL_FACH state to the
`
`
`
`
`
`transmission instead. The difficulty however, resides in the
`CELL_DCH state; and
`
`
`low data rate offered by the RACH.
`
`
`
`FIG. 9 is a flow diagram for releasing the E-DCH resources
`To overcome these difficulties, it was proposed to use the 60
`
`
`
`
`
`while in the CELL_FACH state.
`
`
`
`enhanced dedicated channel (E-DCH) in the CELL_FACH
`
`
`state to increase the data rate of the shared channel.
`
`
`FIG. 1 is a diagram of an enhanced RACH (E-RACH)
`When referred to hereafter, the terminology "wireless
`
`
`
`
`
`
`access. The E-RACH procedure may include, a RACH pre­
`
`
`
`transmit/receive unit (WTRU)" includes but is not limited to
`
`
`amble phase and an E-RACH message phase. During the 65
`
`
`
`a user equipment ( UE), a mobile station, a fixed or mobile
`
`
`
`initial RACH preamble phase, a WTRU transmits a RACH
`
`
`
`
`
`subscriber unit, a pager, a cellular telephone, a personal digi-
`
`
`
`preamble, it continues transmitting the preamble while ramp-
`
`
`
`MESSAGE IN AN ENHANCED RANDOM
`
`ACCESS CHANNEL
`
`CROSS REFERENCE TO RELATED
`APPLICATIONS
`
`S UMMARY
`
`FIELD OF INVENTION
`
`
`
`
`
`BACKGROUND
`
`FIG. 4 is a flow diagram of a E-DCH resource allocation
`
`DETAILED DESCRIPTION
`
`IPR2022-00648
`Apple EX1019 Page 14
`
`

`

`US 8,774,104 B2
`4
`3
`
`ta! assistant (PDA), a computer, or any other type of user
`
`also be referred to as the WTRU 210 receiving an E-DCH
`
`
`
`
`
`
`
`device capable of operating in a wireless environment. When
`
`
`
`
`index. After receiving the E-DCH resource assignment, the
`
`
`
`
`referred to hereafter, the terminology "base station" includes
`
`
`WTRU may transition to the next state wherein E-DCH
`
`
`
`
`but is not limited to a Node-B, a site controller, an access point
`
`
`
`
`resources are allocated for enhanced uplink transmissions
`
`
`(AP), or any other type of interfacing device capable of aper-
`
`410. The WTRU 210 may use these E-DCH resources for UL
`5
`
`ating in a wireless environment.
`
`
`
`transmission until it receives a trigger, at which point the
`
`
`When referred to herein, the term RACH and E-RACH
`
`
`WTRU 210 will release the resources 415. After the WTRU
`
`
`
`
`may be used to describe a resource that is selected by a WTRU
`
`
`
`
`
`210 releases the resources, it returns to the initial state. As will
`
`
`for uplink contention based access. The term E-RACH
`
`
`
`
`be described in further detail hereafter, the trigger may be
`
`
`
`resource may also indicate any combination of a scrambling
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`timer based, it may be based on the WTRU buffer status, or
`10
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`code, a channelization code, a timeslot, an access opportu­
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`may be based on signaling from the RNC or the Node-B 220.
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`to an that are associated nity, or a sign ature sequence
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`In one embodiment, the WTRU 210 may be configured to
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`E-RACH channel in a future system architecture. The term
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`include a timer module. The timer module may include mul­
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`E-RACH may also indicate the use of the E-DCH in
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`tiple timers, wherein a timer may be associated to each logical
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`CELL_FACH, CELL_PCH, URA_PCH states or Idle mode. 15
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`channel or each MAC-d flow. The timer module may be
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`When referred to hereafter, the term enhanced medium
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`transmission configu red to indicate the maximum allowable
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`access control (MAC)-e/es entities may refer to the MAC
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`time for a logical channel (i.e., dedicated control channel
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`entities used to perform E-DCH transmission in the
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`(DCCH), dedicated traffic channel (DTCH), common control
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`CELL_FACH state, which in release 8 is referred to as MAC­
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`channel (CCCH), etc.). The values for the timer module may
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`i/is. MAC-e/es andMAC-i/is are the MAC entities that handle 20
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`be preconfigured WTRU 210. The timers or sign aled to the
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`the transport channel such as the enhanced dedicated trans­
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`may be activated upon the WTRU's 210 first transmission,
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`port channel (E-DCH).
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`once an E-DCH resource index is received. The WTRU may
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`FIG. 2 shows a wireless
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`be configured communication system 200 to release an E-DCH resource upon expiry ofits
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`including a plurality
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`associated of WTRUs 210, a base station 220, a timer. For example, the WTRU 210 may be con-
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`when the maxi­a common E-DCH resource CRNC 230, an SRNC 240, and a core network 250. As shown 25 figu red to release
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`in FIG. 2, the WTRUs 210 are in
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`mum common E-DCH resource communication with the allocation time for the
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`base station 220, which is in communication
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`CCCH has been reached. with the CRNC This embodiment would allow the
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`230 and the SRNC240.Although three WTRUs
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`transmission time duration flexibility 210, one base to configu re a smaller
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`for a logical channel such as the C