`
`J(~~-~~~;,UTILITY PATENT APPLICATION TRANSMITTAL
`.- --
`(Large Entity)
`'-· n
`(Only for new nonprovisional applications under 37 CFR 1.53(b))
`0)
`0
`
`Docket No.
`L9289.02149B
`
`Total Pages in this Submission
`
`°'
`c::
`en
`
`TO THE ASSISTANT COMMISSIONER FOR PATENTS
`Box Patent Application
`Washington, D.C. 20231
`
`"O
`ren~mitted herewith for filing under 35 U.S.C. 111 (a) and 37 C.F.R. 1.53(b) is a new utility patent application for an
`invention entitled:
`
`I
`
`. -· >--
`L~ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -~
`.
`If a CONTINUATION APPLICATION, check appropriate box and supply the requisite information:
`~ Continuation D Divisional D Continuation-in-part {CIP) of prior application No.:
`Which is a:
`D Continuation D Divisional D Continuation-in-part (CIP} of prior application No.:
`Which is a:
`D Continuation D Divisional D Continuation-in-part (CIP) of prior application No.:
`
`10/089.605
`
`Enclosed are:
`
`Application Elements
`
`1. ~ Filing fee as calculated and transmitted as described below
`
`2. ~ Specification having
`
`68
`pages and including the following:
`- - - - - - - - -~
`
`a. ~
`
`Descriptive Title of the Invention
`
`b. D
`
`C. D
`
`d. D
`
`Cross References to Related Applications (if applicable)
`
`Statement Regarding Federally-sponsored Research/Development (if applicable)
`
`Reference to Sequence Listing, a Table, or a Computer Program Listing Appendix
`
`e. ~
`
`Background of the Invention
`
`f. ~
`
`Brief Summary of the Invention
`
`g. ~
`
`Brief Description of the Drawings (if filed}
`
`h. ~
`
`Detailed Description
`
`i. ~
`
`Claim(s) as Classified Below
`
`j. ~
`
`Abstract of the Disclosure
`
`Page I of 4
`
`P01 ULRG/REV06
`
`IPR2018-1556
`HTC EX1002, Page 1
`
`
`
`I,: -,,,-UTILITY PATENT APPLICATION TRANSMITTAL
`(Large Entity)
`(Only for new nonprovisional applications under 37 CFR 1.53(b})
`
`I
`
`Docket No.
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`Total Pages in this Submission
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`3.
`
`4.
`
`Application Elements (Continued)
`1.81 Drawing(s) {when necessary as prescribed by 35 USC 113)
`a. 1.81
`Formal
`Number of Sheets
`17
`b. D
`
`Number of Sheets
`
`Informal
`
`1.81 Oath or Declaration
`a. D Newly executed (original or copy)
`D Unexecuted
`b. 1.81
`Copy from a prior application (37 CFR 1.63(d)) (for continuation/divisional application only)
`D Without Power of Attorney
`DELETION OF /NVENTOR(S)
`Signed statement attached deleting inventor(s) named in the prior application,
`see 37 C.F.R. 1.63(d)(2) and 1.33(b).
`
`With Power of Attorney
`
`(81
`C.
`d. D
`
`5.
`
`1.81
`
`Incorporation By Reference (usable if Box 4b is checked)
`The entire disclosure of the prior application, from which a copy of the oath or declaration is supplied under
`Box 4b, is considered as being part of the disclosure of the accompanying application and is hereby
`incorporated by reference therein.
`
`6. D CD ROM or CD-R in duplicate, large table or Computer Program {Appendix)
`7. D Application Data Sheet (See 37 CFR 1.76)
`8. D Nucleotide and/or Amino Acid Sequence Submission (if applicable, all must be included}
`a. D Computer Readable Form (CRF)
`b. D Specification Sequence Listing on:
`i. 0 CD-ROM or CD-R (2 copies); or
`ii. D Paper
`c. D Statement(s) Verifying Identical Paper and Computer Readable Copy
`
`Accompanying Application Parts
`
`9.
`
`10.
`
`11.
`
`12.
`
`13.
`
`14.
`
`15.
`
`16.
`
`D
`D
`D
`1.81
`1.81
`1.81
`D
`D
`
`Assignment Papers (cover sheet & document(s))
`
`37 CFR 3.73(8) Statement (when there is an assignee)
`
`English Translation Document (if applicable)
`
`Information Disclosure Statement/PT0-1449
`
`D Copies of IDS Citations
`
`Preliminary Amendment
`
`Return Receipt Postcard (MPEP 503) (Should be specifically itemized)
`
`Certified Copy of Priority Document( s) {if foreign priority is claimed)
`
`Certificate of Mailing
`D
`First Class D Express Mail (Specify Label No.):
`
`Page 2 of 4
`
`P01 ULRG/REV06
`
`IPR2018-1556
`HTC EX1002, Page 2
`
`
`
`i
`
`UTILITY PATENT APPLICATION TRANSMITTAL
`(Large Entity)
`(Only for new nonprovisional applications under 37 CFR 1.53(b))
`
`Docket No.
`L9289.02149B
`
`Total Pages in this Submission I
`.
`I
`
`Accompanying Application Parts (Continued)
`
`17.
`
`lg) Additional Enclosures (please identify below):
`
`Confirmation Claim for Priority
`
`Request That Application Not Be Published Pursuant To 35 U.S.C. 122(b)(2)
`
`18. O Pursuant to 35 U.S.C. 122(b)(2), Applicant hereby requests that this patent application not be
`published pursuant to 35 U.S.C. 122(b)(1 ). Applicant hereby certifies that the invention disclosed in
`this application has not and will not be the subject of an application filed in another country, or under
`a multilateral international agreement, that requires publication of applications 18 months after filing
`of the application.
`
`Warning
`
`An applicant who makes a request not to publish, but who subsequently files in a foreign
`country or under a multilateral international agreement specified in 35 U.S.C. 122(b)(2}(B)(i),
`must notify the Director of such filing not later than 45 days after the date of the filing of
`such foreign or international application. A failure of the applicant to provide such notice
`within the prescribed period shall result in the application being regarded as abandoned,
`unless it is shown to the satisfaction of the Director that the delay in submitting the notice
`was unintentional.
`
`Page3 of 4
`
`P01ULRGJREV06
`
`IPR2018-1556
`HTC EX1002, Page 3
`
`
`
`~
`
`.;
`
`.. '
`
`.,
`UTILITY PATENT APPLICATION TRANSMITTAL
`(Large Entity)
`(Only for new nonprovisional applications under 37 CFR 1.53(b))
`
`Docket No.
`L9289.02149B
`
`I
`
`I
`
`Total Pages in this Submission
`
`.m
`
`.. 11
`
`... H,,
`
`Fee Calculation and Transmittal
`
`CLAIMS AS FILED
`
`For
`
`#Filed
`
`#Allowed
`
`#Extra
`
`Total Claims
`
`lndep. Claims
`
`20
`
`2
`
`- 20 =
`- 3 =
`
`0
`
`0
`
`X
`
`X
`
`Multiple Dependent Claims (check if applicable}
`
`0
`
`Rate
`
`$18.00
`
`$84.00
`
`Fee
`
`$0.00
`
`$0.00
`
`$0.00
`
`OTHER FEE (specify purpose)
`
`BASIC FEE
`
`$740.00
`
`$0.00
`
`TOTAL FILING FEE
`
`$740.00
`
`181 A check in the amount of
`to cover the filing fee is enclosed.
`$740.00
`~ The Commissioner is hereby authorized to charge and credit Deposit Account No.
`as described below. A duplicate copy of this sheet is enclosed.
`0 Charge the amount of
`as filing fee.
`~ Credit any overpayment.
`~ Charge any additional fifing fees required under 37 C.F.R. 1.16 and 1.17.
`0 Charge the issue fee set in 37 C.F.R. 1 .18 at the maili~ he Notice of Allowance,
`pursuant to 37 C.F.R. 1.311 (b).
`
`19-4375
`
`Dated: December 18, 2002
`
`cc:
`
`I IIIIIIIIIIIIII/I IIIII IIIII IIII IIII
`24257
`
`PATENT TRADEMARK OFF!CE
`
`~ C., J { l , I/'--
`rW
`, -·- 'S,VJ'iature
`
`E. Ledbetter, Esq.
`J
`Registration No. 28,732
`STEVENS, DA VIS, MILLER & MOSHER, LLP
`1615 L Street, N.W., Suite 850
`Washington, DC 20036
`Tel: 202-785-0100
`Fax: 202-408-5200
`
`Page 4 of 4
`
`P01ULRG/REV06
`
`IPR2018-1556
`HTC EX1002, Page 4
`
`
`
`•, .
`
`IN THE UNITED STATES PATENT AND TRADEMARK OFFICE
`
`In re the Application
`
`Inventors:
`
`Kenichi MIYOSHI, et al.
`
`Appln. No.:
`
`New Continuation Application of
`10/089,605 filed April 1, 2002
`
`Filed:
`
`For:
`
`December 18, 2002
`
`COMMUNICATION TERMINAL APPARATUS, BASE STATION
`APPARATUS, AND RADIO COMMUNICATION METHOD
`
`PRELIMINARY AMENDMENT
`
`Assistant Commissioner of Patents
`Washington, D.C. 20231
`
`Sir:
`
`Please amend the above-captioned application as follows:
`
`IN THE SPECIFICATION
`
`Please insert the following paragraph at page 1, between lines
`
`4 and 5:
`
`--This is a continuation of application number 10/089,605
`
`filed April 1, 2002.--
`
`IN THE CLAIMS
`
`Please amend claims 1-20
`
`to read as follows
`
`(Exhibit
`
`I
`
`contains a marked up version):
`
`1.
`
`(Amended) A communication terminal apparatus used in a
`
`communication system in which communication resources are allocated
`
`1
`
`IPR2018-1556
`HTC EX1002, Page 5
`
`
`
`to each communication terminal apparatus based on downlink channel
`
`quality, said communication terminal apparatus comprising:
`
`a measurer that measures downlink channel quality, and
`
`a transmitter that transmits a notification signal to notify
`
`a base station apparatus of
`
`information that
`
`indicates said
`
`downlink channel quality,
`
`wherein said notification signal includes information made
`
`less susceptible to errors in a propagation path, the information,
`
`among
`
`information
`
`indicative of channel quality, having
`
`a
`
`possibility of decreasing
`
`the downlink
`
`throughput when
`
`the
`
`information is received erroneously in said base station apparatus.
`
`2.
`
`(Amended) The communication terminal apparatus according
`
`to claim 1, wherein said
`
`transmitter
`
`transmits with
`
`less
`
`susceptibility to errors in a propagation path in proportion to a
`
`notification signal that indicates that said downlink channel
`
`quality is good.
`
`3.
`
`(Amended) The communication terminal apparatus according
`
`to claim 2, wherein said transmitter transmits with transmission
`
`power
`
`increased in proportion
`
`to a notification signal that
`
`indicates that said downlink channel quality is good.
`
`2
`
`IPR2018-1556
`HTC EX1002, Page 6
`
`
`
`.~-
`
`4.
`
`(Amended) The communication terminal apparatus according
`
`to claim 3,
`
`further comprising
`
`a controller
`
`that controls
`
`transmission power of a pilot signal,
`
`wherein said transmitter transmits with a notification signal
`
`that
`
`indicates said downlink channel quality better
`
`than a
`
`predetermined channel quality set to higher transmission power than
`
`pilot signal transmission power, and a notification signal that
`
`indicates said downlink channel quality poorer than a predetermined
`
`channel quality set to lower transmission power than pilot signal
`
`transmission power.
`
`5.
`
`(Amended) The communication terminal apparatus according
`
`to claim 3, further comprising:
`
`a table that indicates a correspondence between a notification
`
`signal and transmission power, and
`
`a rewriter that rewrites contents of said table in accordance
`
`with a control signal from a base station apparatus,
`
`wherein said transmitter adjusts a notification signal to
`
`predetermined transmission power based on said table.
`
`6.
`
`(Amended) The communication terminal apparatus according
`
`to claim 2, wherein said transmitter transmits after performing
`
`conversion to a code word with a size of a code word minimum
`
`3
`
`IPR2018-1556
`HTC EX1002, Page 7
`
`
`
`' .
`
`' # '
`
`"l'
`lil .~.d"
`
`distance proportional to a notification signal that indicates that
`
`said downlink channel quality is good.
`
`7.
`
`{Amended} The communication terminal apparatus according
`
`to claim 6, further comprising:
`
`a table that indicates a correspondence between a notification
`
`signal and a code word1 and
`
`a rewriter that rewrites contents of said table in accordance
`
`with a control signal from a base station apparatus,
`
`wherein said transmitt~r converts a notification signal to a
`
`predetermined code word based on said table.
`
`8.
`
`{Amended) The communication terminal apparatus according
`
`to claim 2, further comprising a determiner that determines a
`
`communication mode indicated by a combination of modulation method
`
`and coding method based on channel quality,
`
`wherein said transmitter makes a notification signal a signal
`
`that indicates a communication mode.
`
`9.
`
`(Amended) The communication terminal apparatus according
`
`to claim 2, wherein:
`
`said measurer measures pilot signal reception quality, and
`
`4
`
`IPR2018-1556
`HTC EX1002, Page 8
`
`
`
`.-
`
`said transmitter makes a notification signal a signal that
`
`indicates a pilot signal reception quality value.
`
`10.
`
`(Am.ended) The communication terminal apparatus according
`
`to claim 1, wherein:
`
`said measurer measures pilot signal reception quality, and
`
`said transmitter transmits a notification signal made less
`
`susceptible to errors in a propagation path in proportion to
`
`information for which an amount of change is
`
`large within
`
`information used to indicate a pilot signal reception quality
`
`value.
`
`11. The communication terminal apparatus according to claim
`
`10, wherein said transmitter transmits a notification signal
`
`converted to a code word whose code length is proportional to a
`
`value of an upper digit.
`
`12. The communication terminal apparatus according to claim
`
`10, wherein said transmitter transmits a notification signal with
`
`transmission power increased in proportion to a value of an upper
`
`digit.
`
`5
`
`IPR2018-1556
`HTC EX1002, Page 9
`
`
`
`13. The communication termina1 apparatus according to c1aim
`
`10, wherein said transmitter transmits a notification signa1 spread
`
`with a
`
`spreading code whose spreading factor is higher
`
`in
`
`proportion to a va1ue of an upper digit.
`
`14.
`
`(Amended} A base station apparatus comprising:
`
`a receiver that receives a notification signa1 transmitted
`
`from the communication termina1 apparatus according to c1aim 11
`
`a measurer that measures reception power of a notification
`
`signa11
`
`a detector that detects a notification signa1 whose reception
`
`power is 1ess than a predetermined thresho1d va1ue1 and
`
`a determiner that determines down1ink communication resource
`
`a11ocation using a notification signa1 exc1uding a detected
`
`notification signa1 from a
`
`received p1ura1ity of notification
`
`signals.
`
`15. The base station apparatus according to c1aim 14, further
`
`comprising:
`
`a ca1cu1ator that ca1culates a rate of detection by said
`
`detector, and
`
`a transmitter that transmits a control signa1 instructing a
`
`communication termina1 apparatus to rewrite said table based on a
`
`6
`
`IPR2018-1556
`HTC EX1002, Page 10
`
`
`
`result of comparison of a rate of detection and a predetermined
`
`threshold value.
`
`16.
`
`(Amended) A base station apparatus comprising:
`
`a receiver that receives a notification signal transmitted
`
`from the communication terminal apparatus according to claim 11
`
`a measurer that measures likelihood of a notification signal,
`
`a detector that detects a notification signal whose likelihood
`
`is less than a predetermined threshold value, and
`
`a determiner that determines downlink communication resource
`
`allocation using a notification signal excluding a detected
`
`notification signal from a
`
`received plurality of notification
`
`signals.
`
`17. The base station apparatus according to claim 16, further
`
`comprising:
`
`a calculator that calculates a rate of detection by said
`
`detector, and
`
`a transmitter that transmits a control signal instructing a
`
`communication terminal apparatus to rewrite said table based on a
`
`result of comparison of a rate of detection and a predetermined
`
`threshold value.
`
`7
`
`IPR2018-1556
`HTC EX1002, Page 11
`
`
`
`18.
`
`(Amended) A radio communication method, wherein:
`
`a
`
`communication
`
`terminal apparatus, when
`
`transmitting a
`
`notification signal
`
`to notify a base station apparatus of
`
`information that indicates downlink channel quality, transmits a
`
`notification signal having information made less susceptible to
`
`errors in a propagation path, the information, among information
`
`indicative of said downlink channel quality, having a possibility
`
`of decreasing the downlink throughput when the information is
`
`received erroneously in said base station apparatus, and
`
`said base station determines downlink communication resource
`
`allocation in accordance with a notification signal.
`
`19.
`
`(Amended) The radio communication method according to
`
`claim 18, wherein said communication terminal apparatus transmits
`
`with less susceptibility to errors in a propagation path in
`
`proportion to a notification signal that indicates that said
`
`downlink channel quality is good.
`
`20. The radio communication method according to claim 18,
`
`wherein said communication terminal apparatus measures pilot signal
`
`reception quality, and transmits a notification signal made less
`
`susceptible to errors in a propagation path in proportion to
`
`8
`
`IPR2018-1556
`HTC EX1002, Page 12
`
`
`
`'•
`' ' .
`
`m :JL
`
`,,n
`: . .il ..
`
`![]!
`
`information for which an amount of change
`
`is
`
`large within
`
`information used to indicate a reception quality value.
`
`9
`
`IPR2018-1556
`HTC EX1002, Page 13
`
`
`
`' ...
`
`u,
`
`::iL
`
`REMARKS
`
`This application is directed to original claims 1-20 which are
`
`amended for clarity.
`
`The amendments are considered to be non-
`
`narrowing and no estoppel should be deemed to attach thereto.
`
`Early and favorable consideration of this application is
`
`respectfully requested.
`
`Date: December 16, 2002
`
`JEL/spp
`
`a;~~:tted,
`
`Registration No. 28,732
`
`ATTORNEY DOCKET NO. L9289.02149B
`
`STEVENS, DAVIS, MILLER & MOSHER, L.L.P.
`1615 L Street, NW, Suite 850
`P.O. Box 34387
`Washington, DC 20043-4387
`Telephone:
`(202} 785-0100
`Facsimile:
`(202) 408-5200
`
`10
`
`IPR2018-1556
`HTC EX1002, Page 14
`
`
`
`.·
`
`·21so
`
`Exhibit I
`
`1.
`
`(Amended) A communication terminal apparatus used in a
`
`communication system in which communication resources are
`
`allocated to each communication terminal apparatus based on
`
`downlink channel quality, said communication terminal apparatus
`
`comprising:
`
`a [measuring device] measurer that measures downlink channel
`
`quality, and
`
`a transmitter that transmits a notification signal to notify
`
`a base station apparatus of information that indicates said
`
`downlink channel quality,
`
`wherein said [transmitter transmits a] notification signal
`
`[having] includes information made less susceptible to errors in a
`
`propagation path, the information, among information indicative of
`
`channel quality, having a possibility of decreasing the downlink
`
`throughput when the information is received erroneously in said
`
`base station apparatus.
`
`2.
`
`(Amended) The communication terminal apparatus according
`
`to claim 1, wherein said transmitter transmits with less
`
`susceptibility to errors in a propagation path in proportion to a
`
`notification signal that indicates that said downlink channel
`
`quality is good.
`
`11
`
`IPR2018-1556
`HTC EX1002, Page 15
`
`
`
`3.
`
`(Amended) The communication terminal apparatus according
`
`to claim 2, wherein said transmitter transmits with transmission
`
`power increased in proportion to a notification signal that
`
`indicates that said downlink channel quality is good.
`
`4.
`
`(Amended) The communication terminal apparatus according
`
`to claim 3, further comprising a controller that controls
`
`transmission power of a pilot signal [7]L
`
`wherein said transmitter transmits with a notification
`
`signal that indicates said downlink channel quality better than a
`
`predetermined channel quality set to higher transmission power
`
`than pilot signal transmission power, and a notification signal
`
`that indicates said downlink channel quality poorer than a
`
`predetermined channel quality set to lower transmission power
`
`than pilot signal transmission power.
`
`5.
`
`(Amended) The communication terminal apparatus according
`
`to claim 3, further comprising:
`
`a table that indicates a correspondence between a
`
`notification signal and transmission power, and
`
`12
`
`IPR2018-1556
`HTC EX1002, Page 16
`
`
`
`.. n
`.,,1!.,
`
`Iii
`
`a [rewriting device] rewriter that rewrites contents of said
`
`table in accordance with a control signal from a base station
`
`apparatus [ 7 ] 1-
`
`wherein said transmitter adjusts a notification signal to
`
`predetermined transmission power based on said table.
`
`6.
`
`(Amended) The communication terminal apparatus according
`
`to claim 2, wherein said transmitter transmits after performing
`
`conversion to a code word with a size of a code word minimum
`
`distance proportional to a notification signal that indicates
`
`that said downlink channel quality is good.
`
`7.
`
`(Amended} The communication terminal apparatus according
`
`to claim 6, further comprising:
`
`a table that indicates a correspondence between a
`
`notification signal and a code word, and
`
`a [rewriting device] rewriter that rewrites contents of said
`
`table in accordance with a control signal from a base station
`
`apparatus [ 1] .L
`
`wherein said transmitter converts a notification signal to a
`
`predetermined code word based on said table.
`
`13
`
`IPR2018-1556
`HTC EX1002, Page 17
`
`
`
`8.
`
`(Amended) The communication terminal apparatus according
`
`to claim 2, further comprising a [determination device]
`
`determiner that determines a communication mode indicated by a
`
`combination of modulation method and coding method based on
`
`channel quality[7JL
`
`wherein said transmitter makes a notification signal a
`
`signal that indicates a communication mode.
`
`9.
`
`{Amended) The communication terminal apparatus according
`
`to claim 2, wherein:
`
`said [measurement device] measurer measures pilot signal
`
`reception quality, and
`
`said transmitter makes a notification signal a signal that
`
`indicates a pilot signal reception quality value.
`
`10.
`
`(Amended) The communication terminal apparatus
`
`according to claim 1, wherein:
`
`said [measurement device] measurer measures pilot signal
`
`reception quality, and
`
`said transmitter transmits a notification signal made less
`
`susceptible to errors in a propagation path in proportion to
`
`information for which an amount of change is large within
`
`14
`
`IPR2018-1556
`HTC EX1002, Page 18
`
`
`
`' .
`
`10321
`
`information used to indicate a pilot signal reception quality
`
`value.
`
`11. The communication terminal apparatus according to claim
`
`10, wherein said transmitter transmits a notification signal
`
`converted to a code word whose code length is proportional to a
`
`value of an upper digit.
`
`12. The communication terminal apparatus according to claim
`
`10, wherein said transmitter transmits a notification signal with
`
`transmission power increased in proportion to a value of an upper
`
`digit.
`
`13. The communication terminal apparatus according to claim
`
`10, wherein said transmitter transmits a notification signal
`
`spread with a spreading code whose spreading factor is higher in
`
`proportion to a value of an upper digit.
`
`14.
`
`(Amended) A base station apparatus comprising:
`
`a receiver that receives a notification signal transmitted
`
`from the communication terminal apparatus according to claim 17
`
`a [measurement device] measurer that measures reception
`
`power of a notification signal,
`
`15
`
`IPR2018-1556
`HTC EX1002, Page 19
`
`
`
`21BO
`
`a detector that detects a notification signal whose
`
`reception power is less than a predetermined threshold value, and
`
`a [determination device] determiner that determines downlink
`
`communication resource allocation using a notification signal
`
`excluding a detected notification signal from a received
`
`plurality of notification signals.
`
`15. The base station apparatus according to claim 14,
`
`further comprising:
`
`a calculator that calculates a rate of detection by said
`
`detector, and
`
`a transmitter that transmits a control signal instructing a
`
`communication terminal apparatus to rewrite said table based on a
`
`result of comparison of a rate of detection and a predetermined
`
`threshold value.
`
`16.
`
`(Amended) A base station apparatus comprising:
`
`a receiver that receives a notification signal transmitted
`
`from the communication terminal apparatus according to claim 11
`
`a [measurement device] measurer that measures likelihood of
`
`a notification signal,
`
`a detector that detects a notification signal whose
`
`likelihood is less than a predetermined threshold value, and
`
`16
`
`IPR2018-1556
`HTC EX1002, Page 20
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`
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`a [determination device] determiner that determines downlink
`
`communication resource allocation using a notification signal
`
`excluding a detected notification signal from a received
`
`plurality of notification signals.
`
`17. The base station apparatus according to claim 16,
`
`further comprising:
`
`a calculator that calculates a rate of detection by said
`
`detector, and
`
`a transmitter that transmits a control signal instructing a
`
`communication terminal apparatus to rewrite said table based on a
`
`result of comparison of a rate of detection and a predetermined
`
`threshold value.
`
`18.
`
`(Amended) A radio communication method, wherein:
`
`a
`
`communication
`
`terminal apparatus, when
`
`transmitting a
`
`notification signal
`
`to notify a base station apparatus of
`
`information that indicates downlink channel quality, transmits a
`
`notification signal having information made less susceptible to
`
`errors in a propagation path, the information, among information
`
`indicative of said downlink channel quality, having a possibility
`
`of decreasing the downlink throughput when the information is
`
`received erroneously in said base station apparatus, and
`
`17
`
`IPR2018-1556
`HTC EX1002, Page 21
`
`
`
`said base station determines downlink communication resource
`
`allocation in accordance with a notification signal.
`
`19.
`
`{Amended) The radio communication method according to
`
`claim 18, wherein said communication terminal apparatus transmits
`
`with less susceptibility to errors
`
`in a propagation path in
`
`proportion to a notification signal that indicates that said
`
`downlink channel quality is good.
`
`20. The radio communication method according to claim 18,
`
`wherein said communication terminal apparatus measures pilot
`
`signal reception quality, and transmits a notification signal
`
`made less susceptible to errors in a propagation path in
`
`proportion to information for which an amount of change is large
`
`within information used to indicate a reception quality value.
`
`18
`
`IPR2018-1556
`HTC EX1002, Page 22
`
`
`
`l
`
`DESCRIPTION
`
`COMMUNICATION TERMINAL APPARATUS, BASE STATION APPARATUS,
`
`AND RADIO COMMUNICATION METHOD
`
`5
`
`Technical Field
`
`The present invention relates to a communication
`
`terminal apparatus, base station apparatus, and
`
`radio communication method to be used in a cellular
`
`10
`
`communication system.
`
`Background Art
`
`In a cellular communication system, one base station
`
`performs radio communication with a plurality of
`
`15
`
`communication terminals simultaneously,· and therefore,
`
`as demand has increased in recent years, so has the need
`
`for higher transmission efficiency.
`
`One technology that has been proposed for increasing
`
`the transmission efficiency of a downlink from a base
`
`20
`
`station to a communication terminal is HDR (High Data
`
`Rate). HDR is a communication method whereby a base
`
`station performs scheduling for allocating communication
`
`resources to communication terminals by time division,
`
`and also sets a transmission rate for each communication
`
`25
`
`terminal according to the downlink channel quality.
`
`The operations by which a base station and
`
`communication terminals perform radio communication with
`
`HDR are described below. First, the base station
`
`IPR2018-1556
`HTC EX1002, Page 23
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`
`
`2
`
`transmits a pilot signal to each communication terminal.
`
`Each communication terminal estimates the downlink
`
`channel quality using a CIR (desired carrier to
`
`interference ratio) based on the pilot signal, etc., and
`
`5
`
`finds a transmission rate at which communication is
`
`possible. Then, based on the transmission rate at which
`
`communication is possible, each communication terminal
`
`selects a communication mode, which is a combination of
`
`packet length, coding method, and modulation method, and
`
`10
`
`transmits a data rate control {hereinafter referred to
`
`as "DRC") signal indicating the communication mode to
`
`the base station.
`
`The type of modulation method that can be used in
`
`each system is predetermined as BPSK, QPSK, 16QAM, 64QAM,
`
`15
`
`and so forth. Also, the type of coding that can be used
`
`in each system is predetermined as 1/2 turbo code, 1/3
`
`tur~o code, 3/4 turbo code, and so forth. Further, a
`
`plurality of transmission rates that can be used in each
`
`system are predetermined according to a combination of
`
`20 packet length, modulation method, and coding method.
`
`Eachcommunicationterminalselectsacombinationwhereby
`
`communication can be performed most efficiently with the
`
`current downlink channel quality, and transmits a DRC
`
`signal indicating the selected communication mode to the
`
`25
`
`base station. Generally, DRC signals are represented by
`
`numbers from 1 to N, with a higher number indicating a
`
`proportionally better downlink channel quality.
`
`Based on the DRC signal transmitted from each
`
`IPR2018-1556
`HTC EX1002, Page 24
`
`
`
`3
`
`communication terminalr the base station sets a
`
`transmission rate for each communication terminal, and
`
`sends a signal to each communication terminal via a control
`
`channel indicating communication resource allocation to
`
`5
`
`each communication terminal. Generally, taking
`
`improvement of system transmission efficiency into
`
`consideration, communication resources are allocated
`
`with priority to the communication terminal that has the
`
`best downlink channel quality-that is to say, the
`
`10
`
`communication terminal that transmits the
`
`highest-numbered DRC signal.
`
`The base station then transmits data only to the
`
`relevant communication terminal in its allocated time.
`
`For example, if time tl has been allocated to communication
`
`15
`
`terminal A, in time tl the base station transmits data
`
`only to communication terminal A, and does not transmit
`
`data to a communication terminal other than communication
`
`terminal A.
`
`In this way, data transmission efficiency has
`
`20
`
`conventionally been increased for the overall system by
`
`setting a transmission rate for each communication
`
`terminal according to channel quality by means of HDR,
`
`and performing communication resource allocation with
`
`priority to a communication terminal with a high
`
`25
`
`transmission rate at which communication is possible.
`
`However, if the communication mode determined by
`
`a communication terminal is received erroneously by the
`
`base station due to deterioration of the channel
`
`IPR2018-1556
`HTC EX1002, Page 25
`
`
`
`4
`
`conditions on the uplink from the communication terminal
`
`to the base station, or the like, the base station will
`
`transmit data using that erroneous mode. As the
`
`determined communication mode and the communication mode
`
`5
`
`of data transmitted to the communication terminal are
`
`different, the communication terminal cannot demodulate
`
`or decode the data.
`
`Also, when a base station such as that described
`
`above has allocated time tl to communication terminal
`
`10 A, in time tl the base station transmits data only to
`
`communication terminal A, and does not transmit data to
`
`a communication terminal other than communication
`
`terminal A.
`
`Due to the above, a problem arises in that, if the
`
`15
`
`communication mode determined by a communication terminal
`
`is received erroneously by the base station, there will
`
`be an interval during which time-divided communication
`
`resources are not used, and downlink throughput falls.
`
`20 Disclosure of Invention
`
`It is an object of the present invention to provide
`
`a communication terminal apparatus, base station
`
`apparatus, and radio communication method that make it
`
`possible to prevent a fall in downlink throughput in a
`
`25
`
`communication system in which communication resources
`
`are allocated to communication terminals based on
`
`downlink channel quality.
`
`In order to achieve the above-described object, in
`
`IPR2018-1556
`HTC EX1002, Page 26
`
`
`
`,.
`-~
`
`"""!i~
`
`,.:::t1
`
`!ii
`
`5
`
`the present invention, with respect to information, among
`
`information indicative of downlink channel quality, which
`
`has a possibility of decreasing the downlink throughput
`
`when the information is received erroneously in a base
`
`5
`
`station, a communication terminal provides such
`
`information with less susceptibility to errors in the
`
`propagation path to transmit. It is thereby possible to
`
`prevent the downlink throughput from decreasing.
`
`10 Brief Description of Drawings
`
`FIG.1 is a graph illustrating DRC signal selection
`
`frequency in a base station;
`
`FIG.2 is a block diagram showing a configuration
`
`of a base station according to Embodiment 1 of the present
`
`15
`
`invention;
`
`FIG. 3 is a block diagram showing the con£ iguration
`
`of a communication terminal according to Embodiment 1
`
`of the present invention;
`
`FIG.4 is a drawing showing the contents of the
`
`20
`
`transmission power table provided in a communication
`
`terminal according to Embodiment 1 of the present
`
`invention;
`
`FIG.5 is a block diagram showing another
`
`configuration of a base station according to Embodiment
`
`25
`
`1 of the present invention;
`
`FIG. 6 is a block diagram showing the configuration
`
`of a communication terminal according to Embodiment 2
`
`of the present invention;
`
`IPR2018-1556
`HTC EX1002, Page 27
`
`
`
`·.-:It
`
`6
`
`FIG. 7 is a drawing showing the contents of the code
`
`word table p