USOO7447486B2
`
`(12) United States Patent
`Tamura et al.
`
`(10) Patent No.:
`(45) Date of Patent:
`
`US 7.447.486 B2
`Nov. 4, 2008
`
`(54) DATA TRANSMISSION/RECEPTION
`SYSTEM, MOBILE TERMINAL CONTENT
`SERVER, RADIO BASE STATION DEVICE
`AND METHOD FOR DATA
`TRANSMISSIONARECEPTION
`
`2003/0005454 A1* 1/2003 Rodriguez et al. ............ 725/89
`2003/0025832 A1
`2/2003 Swart et al. ................. 348/461
`2003/0027608 A1
`2/2003 Carmeli et al. .............. 455,574
`2003/0153288 A1* 8/2003 Nakatsuyama ...
`... 455,130
`2004/0171378 A1* 9, 2004 Rautila ....................... 455,419
`
`(75) Inventors: Ryo Tamura, Tokyo (JP); Takeshi
`Fukuizumi, Tokyo (JP)
`
`(73) Assignee: NEC Corporation (JP)
`
`(*) Notice:
`
`Subject to any disclaimer, the term of this
`patent is extended or adjusted under 35
`U.S.C. 154(b) by 397 days.
`(21) Appl. No.: 10/395,626
`
`(22) Filed:
`(65)
`
`(2006.01)
`
`Mar. 25, 2003
`Prior Publication Data
`US 2003/O186704 A1
`Oct. 2, 2003
`Ct. 2,
`Foreign Application Priority Data
`(30)
`Mar. 26, 2002
`(JP)
`............................. 2002-0871.97
`(51) Int. Cl.
`H04B I/8
`455/154.1: 725/87
`(52) U.S. Cl
`4 55/574
`58 Fi id f c - - - - - ificati- - - - - -s - - - - - - - h- - - -
`re O e 3 3 81.426. 412 3.0 6.
`(58) Field o
`455,422 1 450 154 1 3 ol 3.05 414 1.
`348/461 468. 379,126. 408. 725/87 100.
`s
`s
`725/1 01 9 97, 1 03 104
`S
`lication file f
`let
`s hihi t
`s
`ee appl1cauon Ille Ior complete searcn n1Story.
`References Cited
`U.S. PATENT DOCUMENTS
`
`(56)
`
`5,625,880 A * 4/1997 Goldburg et al. ........... 340,722
`6.462.646 B2 * 10, 2002 Helferich .....
`... 340,721
`6.711.246 B1
`3f2004 Albal et al. ................. 379,126
`6,735,634 B1* 52004 Geagan et al. 700,235
`2002/00 19743 A1
`2/2002 Nakamura ..................... 70.5/1
`2002/003 2018 A1
`3f2002 Morton et al. .............. 455,412
`
`FOREIGN PATENT DOCUMENTS
`
`JP
`JP
`JP
`JP
`
`10-200493
`10-512074
`11-331070
`2001-69558
`
`7, 1998
`11, 1998
`11, 1999
`3, 2001
`
`(Continued)
`Primary Examiner Edward Urban
`Assistant Examiner Tu XNguyen
`(74) Attorney, Agent, or Firm—Dickstein, Shapiro, LLP.
`57
`ABSTRACT
`(57)
`A data transmission/reception system for offering content
`download service through a wireless communication net
`work, in which users can obtain desired content on demand
`from the beginning of content data, and the shortage of line
`capacity can be alleviated, thus enabling a reduction of com
`munication charges. A mobile terminal is provided with two
`types of downloading means, an immediate download pro
`cessing means and a reservation download processing means.
`The reservation download processing means makes a down
`load reservation by storing the meta-data of desired content.
`When transmitting content to one mobile terminal that has
`made a request for an immediate download of the content, a
`radio base station allocates a prescribed channel for the
`mobile terminal and sends notification including information
`on the allocated channel to other mobile terminals in the radio
`communication Zone of the radio base station. Having
`received the notification, each mobile terminal tunes into the
`channel, and selectively download reserved content.
`
`102 Claims, 17 Drawing Sheets
`
`ACCESS CONENT SERVER 5
`SEND CONTENT LIST REQUEST
`S3
`RECEIVE
`QNENT, STL
`as
`DISPLAY CONTENTISL
`SELECT CONTENT C
`SELECT IMMEDIATE LOR
`ESERVATION D.
`RESERWA
`(IMMEDIATFS-5SR&
`Si
`
`NC
`
`NO
`
`RWATIONDL
`
`D?
`
`S8
`SEND IMEDIATE
`L REC
`
`S
`9
`
`
`
`NO
`
`RECEWE
`SHARE CH
`NFORATIg)
`
`START DOWNLOANC
`WA SHARED Cls
`
`S1
`COMPLETE
`DOWNLOADING OF
`CONTEN C
`
`NO
`
`YES
`STORE / REPRODUCE
`CONTENT C
`
`S12
`
`END
`
`S13
`SENC) RESERVATION
`OLREQUEST
`
`STORE META-DATA
`AS REGISTEREO
`RESERVATION
`INFORMATION Mr., AN
`ENTER NTD
`NOICE WAT STATE
`
`()
`
`Netflix v. GoTV
`IPR2023-00758
`Netflix Ex. 1007
`
`

`

`US 7.447.486 B2
`Page 2
`
`JP
`JP
`JP
`
`FOREIGN PATENT DOCUMENTS
`2001-197021
`T 2001
`2001-344217
`12/2001
`2002-26836
`1, 2002
`
`JP
`JP
`
`2002-77130
`2002-77856
`
`3, 2002
`3, 2002
`
`* cited by examiner
`
`

`

`U.S. Patent
`
`Nov. 4, 2008
`
`Sheet 1 of 17
`
`US 7.447.486 B2
`
`F I. G. 1 PRIOR ART
`
`USER a
`USER b
`USER C
`USER d
`
`BROADCAST
`PROGRAM
`
`i:::::::::::::::::::::::::::::):- -
`III.):--
`::::::::::::::::::::::::::::::::-
`:::::::::::::::::::::::::::::::::-
`RECEPTION
`OF PROGRAM
`e insula. D.
`
`i
`
`Lu
`2
`
`H
`C
`
`L
`D
`
`C
`(/)
`t
`
`F I. G. 2 PRIOR ART
`
`
`
`
`
`
`
`
`
`USER b
`
`
`
`TO THE DOWNLOAD FROM
`T
`HANNEL - THEMDDLE, OF
`-1
`CONTENT DATA
`
`- - - - - - - - - - - - - - - - - - - -
`
`-
`
`c
`
`

`

`U.S. Patent
`
`Nov. 4, 2008
`
`Sheet 2 of 17
`
`US 7.447.486 B2
`
`
`
`F I. G. 3
`1 OO
`
`FIXED-INE
`LINK
`
`4
`
`RADIO LINK
`
`1
`
`8
`USER
`
`CONTENT C
`
`

`

`U.S. Patent
`
`Nov. 4, 2008
`
`Sheet 3 of 17
`
`US 7.447.486 B2
`
`
`
`
`
`CONTENT C
`CONTENT LIST L
`
`F. I. G. 6
`
`M
`
`-
`
`s so -
`
`-
`
`-
`
`-
`
`-
`
`D
`
`iDENTIFICATION CODE (CONTENT ID)
`TITLE
`CREATOR'S NAME
`
`
`
`GENRE
`DATE INFORMATION (CREATION DATE, VALID PERIOD, ETC.
`, size, RUN TIME OUALITY FORMAT, Etc.
`
`
`
`

`

`U.S. Patent
`
`Nov. 4, 2008
`
`Sheet 4 of 17
`
`US 7.447.486 B2
`
`F I. G. 8
`
`
`
`MOBILE
`TERMINAL
`
`RADIO BASE STATION
`
`

`

`U.S. Patent
`
`US 7.447.486 B2
`
`
`
`,
`
`6 '$) I -
`
`?zzzzzzzzzzzzz
`
`Q:D
`
`ETTET
`
`

`

`U.S. Patent
`
`Nov. 4, 2008
`
`Sheet 6 of 17
`
`US 7.447.486 B2
`
`
`
`F I. G. 11
`DL NOTICE START OF TUNING
`WAIT
`SHARED CH S
`--
`
`
`
`USER a
`USER C------
`
`USER b ---------------
`
`
`
`-
`2 H 21 - J - L.
`C (?) O (O H(?) O C1
`Pll El Gul P -
`O
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`;
`
`

`

`U.S. Patent
`
`Nov. 4, 2008
`
`Sheet 7 of 17
`
`US 7.447.486 B2
`
`F I. G. 12
`
`START
`
`ACCESS CONTENT SERVER 3
`SEND CONTENT LIST REQUEST
`
`s
`
`--- YES
`
`S4
`S5
`S6
`
`DISPLAY CONTENT LIST L
`SELECT CONTENT C
`SELECT IMMEDIATE DL OR
`RESERVATION DL
`YES
`S7
`NO
`(IMMEDIATE DL)-1ESERVATIONN-CRESERVATION DL)
`DL ?
`S8
`S13
`SEND IMMEDIATE
`SEND RESERVATION
`DL REQUEST
`DL REQUEST
`
`SS
`
`
`
`RECEIVE
`RESERVATION DL
`RESPONSE 2
`YES
`
`S15
`STORE META-DATA M
`AS REGISTERED
`RESERVATION
`INFORMATION Mr., AND
`ENTER INTO DL
`NOTICE WAIT STATE
`
`
`
`
`
`
`
`
`
`RECEIVE
`SHARED CH
`NFORMATIO
`
`
`
`S1 O
`YES
`START DOWNLOADING
`VIA SHARED CH S
`
`
`
`
`
`
`
`
`
`COMPLETE
`DOWNLOADING OF
`CONTENT C 2
`
`YES
`STORE(REPRQDUCES12
`CONTENT C
`
`

`

`U.S. Patent
`
`Nov. 4, 2008
`
`Sheet 8 of 17
`
`US 7.447.486 B2
`
`F I. G. 13
`
`se
`
`MATCH META-DATA M
`WITH META-DATA Mr
`
`
`
`
`
`META-DATA
`MATCH
`YES
`TUNE IN TO SHARED
`CH S SPECIFIED BY
`O NOTICE
`
`RECEIVE CONTENT C
`
`STORE / REPRODUCE
`CONTENT C
`
`
`
`DELETE META-DATA Mr
`
`
`
`
`
`IS THERE
`ANOTHER ENTRY OF
`META-DATA Mr
`
`
`
`NO
`AWAKE FROM DL
`NOTICE WAIT STATE
`
`S29
`
`

`

`U.S. Patent
`
`Nov. 4, 2008
`
`Sheet 9 of 17
`
`US 7.447.486 B2
`
`F I G. 14
`
`
`
`
`
`
`
`
`
`
`
`
`
`RECEIVE REQUEST
`FROM MOBILE
`TERMINAL 1
`
`S51
`
`
`
`RECEIVE
`CONTENT LIST
`REQUEST 2
`
`SEND CONTENT
`LIST L
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`RECEIVE
`RESERVATION DL
`REQUEST 2
`
`SEND META-DATA M
`OF CONTENT C IN
`RESPONSE
`
`RECEIVE
`IMMEDIATE DL
`REQUEST 2
`
`S37
`YES
`SEND CONTENT C
`IN RESPONSE
`
`

`

`U.S. Patent
`
`Nov. 4, 2008
`
`Sheet 10 of 17
`
`US 7.447.486 B2
`
`F I. G. 15
`
`RECEIVE DATA
`FROM CONTENT
`SERVER 3
`
`S41
`
`YES
`FORWARD
`CONTENT LIST L
`
`S4.5
`
`
`
`RECEIVE
`RESERVATION DL
`RESPONSE 2
`
`
`
`FORWARD
`RESERVATION
`DL RESPONSE TO
`MOBILE TERMINAL 1
`
`RECEIVE
`IMMEDIATE DL
`RESPONSE 2
`
`S47
`YES
`ALLOCATE SHARED
`CH S IN RADIO LINK
`S48
`
`BROADCAST DL
`NOTICE VIA
`BROADCAST CH IN
`RADIO COMMUNICATION
`ZONE
`
`S49
`SEND CONTENT C
`VIA SHARED CH S
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`END
`
`

`

`U.S. Patent
`
`Nov. 4, 2008
`
`Sheet 11 of 17
`
`US 7.447.486 B2
`
`F I. G. 16
`
`CONTENT
`MOBILE
`MOBILE
`RADIO BASE
`SERVER 3
`ERMINAL a WVTERMINAL b
`STATION 2
`:
`CONTROL CH:
`:
`-
`ACCESS REQUEST
`CONTROL CH
`DEDICATED CH1N
`Attocic s- 1
`I
`p
`P : RESERVATION
`:
`-era, a 4S-DEDICATED.CH:
`DL REQUEST
`DEDICATEDCA:
`EEEWSON."
`p2p
`RESERVATION
`:
`DL REQUEST
`- -
`- DL RESPONSE
`IP : RESERVATION -
`F
`;
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`: "RESSF (META-DATAM)
`p3
`(META-DATA M)
`:
`--/
`st1
`DECAID ch: CIF
`CONTROL CH ACCESS REQUEST
`CONTROL CH: DEDICATED CH2 ALLOCATION:
`EMEP DEDICATED CH2, IMMEDIATE DL REQUEST
`p4 IP IMMEDIATE DL RESPONSE
`cutor
`(MEDAMCONTROC SHAREDICH ALLOCATION
`BROADCAST CH :
`CONTENT DATA D);
`DL NOTICE
`SHARED CH:
`(pp5
`DATA RANSMISSION
`(START OF
`:
`: DowNLOADING, DOWNLOADING)
`.
`OF CONTENT C
`t
`
`lie- F -
`
`F --
`
`
`
`(COMPLETION OF
`DOWNLOADINC)
`DEDICATED CH2. CUTOFF
`(p6
`
`op6
`
`

`

`U.S. Patent
`
`Nov. 4, 2008
`
`Sheet 12 of 17
`
`US 7.447.486 B2
`
`
`
`Cr,
`–)
`Li ] (/)
`
`(?
`
`F I. G. 17
`
`F IMMEDIATE DL
`
`DOWNLOADING
`VIA SHARED CH S
`
`- - - - - - - - - - -|l}}\/1S TO
`
`
`
`- - - - - - - - - - - - - - - - - -NOLLWNIW?|B|, TIO
`
`

`

`U.S. Patent
`
`Nov. 4, 2008
`
`Sheet 13 of 17
`
`US 7.447.486 B2
`
`F I. G. 18
`
`
`
`
`
`S501
`NO
`
`RECEIVE
`DL NOTICE 2
`
`S51O
`NO
`
`YES
`
`S5O2
`
`YES
`
`S511
`
`S505
`
`S512
`
`MATCH
`YES
`TUNE IN TO SHARED
`CH S SPECIFIED BY
`DL NOTICE
`
`CONTENT C
`
`S504
`
`RECEIVE CONTENT C
`
`S505
`
`STORE / REPRODUCE
`CONTENT C
`
`S506
`
`DELETE META-DATA Mr
`
`S5O7
`
`YES
`
`
`
`
`
`S508
`IS THERE
`ANOTHER ENTRY OF
`MEA-DATA Mr
`NO
`AWAKE FROM DL NOTICE
`WAIT STATE
`
`S509
`
`

`

`U.S. Patent
`
`Nov. 4, 2008
`
`Sheet 14 of 17
`
`US 7.447.486 B2
`
`:
`:
`
`p20
`
`F I. G. 19
`CONTENT
`MOBILE
`RADIO BASEY / MOBILE
`SERVER 5
`STATION 2 / VTERMINAL 1 a VTERMINAL 1b
`CONTROL CH:
`:
`- ACCESS REQUEST
`CONTROL CH:
`DEDICATED CHIN-
`|
`ACCAiiONCs
`-
`op1
`IP : RESERVATION !---4s-DEDICATED CH1 ::
`REWTON".
`DL REQUEST
`DEDICATED CA
`RESERVATION
`DL REQUEST
`:
`IPRESEYAS
`ifixiv) p3
`p
`7
`t
`CONTROL CH ACCESS REQUEST:
`DEDICAED ch: CUCF
`CONTROL CH DEDICATED CH2 ALLOCATION
`- - - - - - - - - - -
`IP: IMMEDIATE DL
`. It lif
`1.
`REQUEST
`DEDICATED CH2: IMMEDIATE DL REQUEST
`p4: two AEL RESPONSE
`cutor
`:
`"VITA DATAV
`CONTROL CH: SHARED CHALLOCATION
`CONTENT DATA D) BROADCASC D NOTICE
`E. Eisstop
`SHARED CH:
`SARGE. :
`DowNLOADING, DOWNLOADING
`OF CONTENT C.
`
`(META-DATA M)
`
`
`
`:
`
`:
`
`{
`
`:
`
`:
`(COMPLETION OF 1
`DEDICATED CH2. CUTOFF
`DOWNLOADING)
`.
`p6
`CONTROL CH:
`;
`ACCESS REQUEST CONTROL CH:
`- DEDICAED, CH3
`- ALLOCATION
`DEDICATED CH3:
`Rajesty N
`MISSING DAIA
`: DEDICATED CH5
`:
`- MISSING DATA
`:
`:
`iDEDICATED CH3; OUTOFF-4C TRANSMSSION
`- Y
`:
`dp6
`
`

`

`U.S. Patent
`
`Nov. 4, 2008
`
`Sheet 15 of 17
`
`US 7.447.486 B2
`
`F I. G. 20
`
`
`
`FIXED-LINE
`
`4
`
`

`

`U.S. Patent
`
`Nov. 4, 2008
`
`Sheet 16 of 17
`
`US 7.447.486 B2
`
`F. I. G. 21
`
`ACCOUNTING
`SERVER 5
`
`:
`
`|
`
`MOBILE
`MOBILE
`CONTENTY/RADIO BASE
`SERVER 3WV, STATION 2 JVTERMINAL 1a VTERMINAL 1b
`CONTROL CH :
`DELEASE,St., "RE's REQUEST5Elish
`RESERVATION
`DL REQUEST
`4. yoto
`IP RESEAN n
`EDIATECH:
`DREQUES."
`RESERVATION
`p28 --------a
`YD RESPONSE
`i (META-DATA M)
`PSS DEDICATED CHL
`p3
`CUTOFF
`(META-DATA M) -
`UUIUFF
`CONTROL CH,
`t1
`DEDICATED CH2
`CONTROL CH: ACCESS REQUEST
`ALOCATION
`0.
`IP: IMMEDIATE DL
`IATE DL REQUEST
`:
`REQUEST
`IDEDICATED CH2 : M
`-
`|-
`p4(P: YEDIAED RESPONSE
`CONTROL CH: SHARED CH ALLOCATION
`(META-DATA M +
`
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`1
`
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`BROADCAST CH-/SAFE is
`D NOTICE
`(DATA TRANSMISSION
`:
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`DOWNLOADING) .
`: DLTYPE + RECEPTION COMPLETION
`; OF MOBILETERMINAbAMOUNT DEDICATED CH2. RECEPTION COMPLETION:
`OF COMMUNICATED DATA
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`DEDICATED CH2: CUTOFF
`2. OF
`YPE+RECEPTION COMPLETION
`OBLE TERMINAL 1a + AMOUNT
`E
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`OMUNICATE5DAA"
`S.
`OF
`C
`CONTROL CH:
`RECEPTION
`COMPLETON
`
`ls- A F - F - - -
`
`- -
`
`

`

`U.S. Patent
`
`Nov. 4, 2008
`
`Sheet 17 of 17
`
`US 7.447.486 B2
`
`
`
`
`
`
`
`
`
`
`
`
`F I. G. 22
`
`CATEGORY
`SPECIFIED
`BY USER
`
`
`
`
`
`REGISTERED
`RESERVATION
`INFORMATION Mr
`
`NITRE,
`INFORMATION m
`
`ENTRIES OF DL
`RESERVATION
`BY CONTENT C
`META-DATA M1
`META-DATA M2
`META-DATA M5
`
`MATCHING
`CHECK
`(M (--Mr)
`
`
`
`
`
`F I. G. 23
`
`IDENTIFICATION CODE (CONTENT ID)
`TITLE
`CREATOR'S NAME
`
`GENRE
`DATEINFORMATION (CREATION DATE, VALID PERIOD, ETC)
`SIZE, RUN TIME, QUALITY, FORMAT, ETC.
`
`
`
`
`
`COPYRIGHT INFORMATION
`(REGULATIONS AND CONTROL
`, SPECIFICATIONS FOR USE OF
`CONTENT)
`
`
`
`

`

`US 7,447,486 B2
`
`1.
`DATA TRANSMISSIONARECEPTION
`SYSTEM, MOBILE TERMINAL CONTENT
`SERVER, RADIO BASE STATION DEVICE
`AND METHOD FOR DATA
`TRANSMISSIONARECEPTION
`
`FIELD OF THE INVENTION
`
`The present invention relates to a data transmission/recep
`tion system to use a wireless communication network Such as
`a cellular phone system and, more particularly, to a system for
`transmitting/receiving content including a large amount of
`data Such as moving images and music.
`
`BACKGROUND OF THE INVENTION
`
`10
`
`15
`
`Techniques for transmitting/receiving data via a cellular
`phone have been developed in recent years so that users can
`enjoy rich contents (contents having a large amount of data)
`Such as moving images and music on their cellular phones.
`However, radio base stations do not have enough line or
`channel capacity for delivering Such rich contents to users
`cellular phones, and telecommunications carriers cannot
`offer the service at low price. Besides, users still hesitate to
`download the rich contents since radio communication is
`generally charged at a metered rate (accounting is given
`depending on the amount of downloaded data).
`As a technique for dealing with the above problems, there
`has been disclosed a method for delivering data to mobile
`terminals through broadcasting type service channels in Japa
`nese Patent Application laid open No. 2002-26836. FIG. 1 is
`a diagram showing the image of a download method (broad
`casting type service) according to the prior art. In the prior art,
`content (broadcast program) is delivered to a plurality of
`users via prescribed channels at the fixed hour. That is, the
`users cannot receive and obtain desired contents at desired
`time or on demand.
`Incidentally, the broadcasting type service is a type of
`service in which data (program, contents) are unilaterally sent
`to users at the proscribed hour.
`As another technique for dealing with the above problems,
`there has been disclosed a method of simultaneous data deliv
`ery to plural user terminals by sharing the same downlink
`channel in radio links (a transmission channel from a radio
`base station to the mobile terminals of users) in Japanese
`Patent Application laid open No. 2001-69558. According to
`the technique, when a user requests a download of content
`within a certain period of waiting time (for example, five
`seconds) after another user has made a request for the same
`content, the content is delivered simultaneously to the users
`via the same downlink channel. In addition, when a user
`(second user) requests a download of content while another
`user (first user) is downloading the content, the same down
`link channel being used for downloading the content to the
`first user is also allocated for the second user, and the second
`user receives the content from the middle of content data.
`FIG. 2 is a diagram showing the image of downloading (in
`which the same channel is shared by two users from the
`middle of downloading) according to the prior art.
`With this technique, however, in the case where plural user
`terminals share the same downlink channel to download con
`tent from the beginning of content data, Such channel shared
`downloading cannot be performed unless a request for the
`same content is made within a certain period of waiting time.
`In the description of the above prior art, the waiting time is
`assumed to be five seconds as an example. When the waiting
`time is short, the probability of the same requests occurring in
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`the waiting time is decreased. On the other hand, long waiting
`time delays the time which it takes to complete downloading
`after a user made a request, and the practicability of service is
`reduced. Besides, in the case where a user (second user)
`requests a download of content while another user (first user)
`is downloading the same content, the same downlink channel
`being used for downloading the content to the first user is also
`allocated for the second user, and the second user receives the
`content from the middle of content data via the downlink
`shared channel as described above. Consequently, user(s)
`other than the first user cannot obtain the entire data of the
`desired content.
`
`SUMMARY OF THE INVENTION
`
`It is therefore an object of the present invention to provide
`a data transmission/reception system for offering download
`service with respect to rich contents such as moving images
`and music to mobile terminals through the wireless commu
`nication network of the cellular phone system and the like,
`wherein users can receive and obtain desired contents at
`desired time or on demand unlike with the broadcasting type
`content distribution service, and the content is downloaded
`from the beginning of content data. With the data transmis
`sion/reception system, the shortage of line capacity for deliv
`ering the rich contents can be alleviated, and communication
`charge is reduced.
`It is another object of the present invention to provide a data
`transmission/reception system for meeting the needs of both
`users who wish to obtain content immediately and users who
`choose inexpensive communication charge rater than imme
`diate downloading.
`In accordance with the first aspect of the present invention,
`to achieve the above object, there is provided a data transmis
`sion/reception system, comprising: a radio base station; a
`plurality of mobile terminals; and a content server for man
`aging contents; wherein: the radio base station includes a
`means for assigning a prescribed channel to the first mobile
`terminal when transmitting content to the first mobile termi
`nal via a radio link, and notifying the second mobile terminal
`in the radio communication Zone of the radio base station
`about the channel; and the second mobile terminal includes a
`means for downloading the content using the channel in com
`mon with the first mobile terminal when notified of the chan
`nel.
`In accordance with the second aspect of the present inven
`tion, in the first aspect, the second mobile terminal includes a
`reservation means for reserving a download of content, and
`selectively downloads the content reserved by the reservation
`means via the radio link.
`In accordance with the third aspect of the present invention,
`in the second aspect, the reservation means reserves a down
`load of content by storing meta-data of the content in a res
`ervation meta-data managing section as reserved meta-data;
`and the second mobile terminal downloads the content when
`the reserved meta-data matches meta-data of the content to be
`transmitted to the first mobile terminal from the radio base
`station.
`In accordance with the fourth aspect of the present inven
`tion, in the third aspect, the second mobile terminal internally
`includes the reservation meta-data managing section; the
`radio base station notifies the second mobile terminal about
`the meta-data of the content to be transmitted to the first
`mobile terminal in addition to about the channel; and the
`second mobile terminal matches the notified meta-data with
`the reserved meta-data, and downloads the content when the
`two meta-data match.
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`In accordance with the fifth aspect of the present invention,
`there is provided a data transmission/reception system, com
`prising: a radio base station; a plurality of mobile terminals;
`and a content server for managing contents; wherein: each of
`the mobile terminals include an immediate download pro
`cessing means for immediately downloading desired content
`from the content server, and a reservation download process
`ing means for reserving a download of content to download
`the content afterwards; the reservation download processing
`means reserves a download of desired content by obtaining
`and storing meta-data of the content; the radio base station
`assigns a downlink shared channel to the mobile terminal
`which immediately downloads content by the immediate
`download processing means when transmitting the content
`thereto, and simultaneously notifies all the mobile terminals
`in the radio communication Zone of the radio base station
`about information on the downlink shared channel and meta
`data of the outgoing content; and the mobile terminals that
`have been notified of the information match the notified meta
`data with the meta-data stored by the reservation download
`processing means, and tune into the downlink shared channel
`to download the content when the outgoing content proves
`coincident with the reserved content.
`In accordance with the sixth aspect of the present inven
`tion, there is provided a data transmission/reception system,
`comprising: a radio base station; a plurality of mobile termi
`nals; and a content server for managing contents and meta
`data thereof to offer download service to the mobile termi
`nals; wherein: each of the mobile terminals include a data
`communication section provided with an immediate down
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`load processing means for immediately downloading desired
`content from the content server, and a reservation download
`processing means for reserving a download of desired content
`by obtaining and storing meta-data of the content to download
`the content afterwards; when receiving a request for an imme
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`diate download from one of the mobile terminals, the content
`server sends content data and meta-data of the requested
`content to the mobile terminal in response; when receiving a
`request for a reservation download of content from one of the
`mobile terminals, the content server sends meta-data of the
`requested content to the mobile terminal in response; the
`radio base station assigns a downlink shared channel to the
`mobile terminal when transmitting the content data and meta
`data of the requested content sent from the content server by
`the immediate download request, and simultaneously notifies
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`all the mobile terminals in the radio communication Zone of
`the radio base station about information on the downlink
`shared channel and meta-data of the outgoing content; and the
`mobile terminals that have been notified of the information
`match the notified meta-data with the meta-data stored by the
`reservation download processing means, and tune in to the
`downlink shared channel to download the content when the
`outgoing content proves coincident with the reserved content.
`In accordance with the seventh aspect of the present inven
`tion, in the fifth or sixth aspect, the mobile terminal further
`includes a means for operating in standby for a certain period
`of waiting time after reserving a download of content and,
`when receiving no notification from the radio base station
`within the waiting time, making a request to the content server
`for an immediate download of the content to download the
`reserved content.
`In accordance with the eighth aspect of the present inven
`tion, in the seventh aspect, the mobile terminal further
`includes a means by which a user sets the waiting time, and
`operates in Standby based on the waiting time set by the user.
`In accordance with the ninth aspect of the present inven
`tion, in one of the fifth to eighth aspects, the mobile terminal
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`further includes a means for making a request to the radio
`base station for missing data packets through a prescribed
`channel to obtain the entire data of the reserved content when
`the mobile terminal has not received the entire data of the
`reserved content by downloading.
`In accordance with the tenth aspect of the present inven
`tion, in one of the fifth to ninth aspects, the data transmission/
`reception system further comprises: an accounting server;
`and a determining means for determining a download type
`adopted by the respective mobile terminals; wherein the
`accounting server maintains communication records with
`regard to downloads made by the mobile terminals, and con
`ducts accounting for the mobile terminals according to the
`download type determined by the determining means.
`In accordance with the eleventh aspect of the present inven
`tion, in the tenth aspect, the mobile terminal sends a reception
`completion message to the radio base station on completion
`of downloading; the radio base station determines a download
`type adopted by the mobile terminal based on the reception
`completion message, and sends information including the
`determined download type, the reception completion mes
`sage and the amount of communicated data to the accounting
`server; and the accounting server stores the information sent
`from the radio base station as the communication records to
`conduct accounting according to the communication records.
`In accordance with the twelfth aspect of the present inven
`tion, in one of the fifth to eleventh aspects, the mobile terminal
`further includes a category reservation means for specifying a
`certain category to reserve downloads of contents by cat
`egory, and selectively downloads the contents which belong
`to the specified category via the radio link.
`In accordance with the thirteenth aspect of the present
`invention, in the twelfth aspect, the meta-data of content
`includes a variety of attribute values as information elements;
`the category reservation means specifies the attribute value
`and stores it to reserve downloads of contents by category:
`and the mobile terminal that has received notification from
`the radio base station matches the meta-data in the notifica
`tion with the stored attribute value to download the content
`via the downlink shared channel when the two values match.
`In accordance with the fourteenth aspect of the present
`invention, in one of the fifth to thirteenth aspects, the meta
`data of content includes a description of copyright informa
`tion indicating regulations and control specifications for the
`use of the content in the mobile terminals as an information
`element; and the mobile terminal regulates and controls the
`use of the content according to the copyright information after
`the completion of downloading.
`In accordance with the fifteenth aspect of the present inven
`tion, there is provided a mobile terminal comprising: a radio
`communication section for having radio communication with
`a radio base station via a radio link; and a means for reserving
`a download of content that is sent from the radio base station
`via a radio downlink; wherein, when receiving notification
`including information on a channel in the radio link for trans
`mitting content from the base station, the mobile terminal
`selectively downloads the reserved content through the chan
`nel.
`In accordance with the sixteenth aspect of the present
`invention, there is provided a mobile terminal which is linked
`to a radio base station via a radio link and downloads content
`by communicating with a content server, comprising: a radio
`communication section for having radio communication with
`the radio base station via the radio link; a data communication
`section for communicating data with the content server
`through the radio communication section; and a content Stor
`age/reproduction section for storing/reproducing content
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`downloaded from the content server; wherein: the data com
`munication section is provided with an immediate download
`processing means for immediately downloading content, and
`a reservation download processing means for reserving a
`download of content to download the content afterwards; and
`when receiving notification including information on a down
`link shared channel for transmitting content from the base
`station, the data communication section tunes into the down
`link shared channel and selectively downloads the reserved
`COntent.
`In accordance with the seventeenth aspect of the present
`invention, in the sixteenth aspect, the reservation download
`processing means reserves a download of desired content by
`storing meta-data of the content in the mobile terminal; when
`receiving the notification including information on the meta
`data of outgoing content in the radio link and the downlink
`shared channel for transmitting the content, the data commu
`nication section matches the meta-data in the notification
`with the meta-data stored by the reservation download pro
`cessing means, and tunes into the downlink shared channel to
`download the content when two meta-data match.
`In accordance with the eighteenth aspect of the present
`invention, in the sixteenth or seventeenth aspect, the mobile
`terminal further comprises a means for operating in standby
`for a certain period of waiting time after reserving a download
`of content and, when receiving no notification from the radio
`base station within the waiting time, making a request to the
`content server for an immediate download of the content to
`download the reserved content.
`In accordance with the nineteenth aspect of the present
`invention, in the eighteenth aspect, the mobile terminal fur
`ther comprises a means by which a user sets the waiting time,
`and operates in standby based on the waiting time set by the
`USC.
`In accordance with the twentieth aspect of the present
`invention, in one of the fifteenth to nineteenth aspects, the
`mobile terminal further comprises a means for sending a
`request for missing data packets to the radio base station via
`a prescribed channel to obtain the entire data of the reserved
`content when the mobile terminal has not received the entire
`data of the reserved content through downloading performed
`by the reservation download processing means.
`In accordance with the twenty-first aspect of the present
`invention, there is provided a mobile terminal which is linked
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`to a radio base station via a radio link, provided with a means
`for specifying a certain category to reserve downloads of
`contents by category, and selectively downloads the contents
`which belong to the specified category via the radio link.
`In accordance with the twenty-second aspect of the present
`invention, in one of the fifteenth to twentieth aspects, the
`meta-data of content includes a variety of attribute values as
`information elements; the mobile terminal further comprises
`a means for specifying the attribute value and stores it to
`reserve downloads of contents by category and, when receiv
`ing the notification from the radio base station, matches the
`meta-data in the notification with the stored attribute value to
`download the content via the downlink shared channel when
`the two values match.
`In accordance with the twenty-third aspect of the present
`invention, in one of the fifteenth to twenty-second aspects, the
`meta-data of content includes a description of copyright
`information indicating regulations and control specifications
`for the use of the content; and the mobile terminal further
`comprises a means for regulating and controlling the use of
`the content according to the copyright information after the
`completion of downloading.
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`In accordance with the twenty-fourth aspect of the present
`invention, there is provided a content server comprising: a
`content managing means for managing content data and
`meta-data; and a data communication section for handling
`data communication with mobile terminals that are linked to
`a radio base station on a wireless communication network via
`radio links; wherein, when receiving a request for a reserva
`tion download of content from the mobile terminal, the con
`tent server sends meta-data of the requested content to the
`mobile terminal in response; and when receiving a request for
`an immediate download of content from the mobile terminal,
`the content server sends content data and meta-data of the
`requested content to the mobile terminal in response.
`In accordance with the twenty-fifth aspect of the present
`invention, there is provided a radio base station connected
`with a wireless communication network, comprising: a radio
`communication section for handling radio communication
`with mobile terminals that are linked to the radio base station
`via radio links according to a prescribed multiple accessing
`method; a means for assigning a prescribed channel in the
`radio link to send content on beginning to receive content data
`and meta-data from a content server that is connected to the
`wireless communication network; and a means for notifying
`the mobile terminals in the radio communication Zone of the
`radio base station abo