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`Case 2:20-cv-00322-JRG Document 1-5 Filed 10/01/20 Page 1 of 23 PageID #: 103
`
`EXHIBIT E
`
`EXHIBIT E
`
`

`

`Case 2:20-cv-00322-JRG Document 1-5 Filed 10/01/20 Page 2 of 23 PageID #: 104
`caseZQO'CV'OOO’ZZ'JRG ”mm“ 1'5 “000nmI000000000004
`
`USOO6983147B1
`
`(12) United States Patent
`US 6,983,147 B1
`(10) Patent N0.:
`Hans et al.
`Jan. 3, 2006
`(45) Date of Patent:
`
`(54) METHOD OF TRANSMITTING SIGNALING
`INFORMATION, A MASTER STATION, A
`MOBILE STATION AND MESSAGE
`ELEMENTS
`
`(75)
`
`Inventors: Martin Hans, Hildesheim (DE); Josef
`Laumen, Hildesheim (DE); Mark
`Beckmann, Hameln (DE); Volker
`Deichmann, Hildesheim (DE)
`
`(73) Assignee: Robert Bosch GmbH, Stuttgart (DE)
`
`( * ) Notice:
`
`Subject to any disclaimer, the term of this
`patent is extended or adjusted under 35
`U.S.C. 154(b) by 398 days.
`
`(21) Appl. No.:
`
`10/088,146
`
`(22) PCT Filed:
`
`Jun. 30, 2000
`
`(86) PCT No.:
`
`PCT/DE00/02128
`
`§ 371 (0(1),
`(2), (4) Date:
`
`Jul. 25, 2002
`
`(87) PCT Pub. No.: WO01/17303
`
`PCT Pub. Date: Mar. 8, 2001
`
`(30)
`
`Foreign Application Priority Data
`
`
`Aug. 30, 1999
`Sep. 8, 1999
`
`(DE)
`(DE)
`
`199 41 432
`................................ 199 42 768
`
`(51)
`
`Int. Cl.
`H04B 1/06
`
`(2006.01)
`
`(52) US. Cl.
`
`....................... 455/436; 455/439; 370/331
`
`(58) Field of Classification Search . 455/436—420,437,
`455/438, 439, 442, 522; 370/331, 332
`
`(56)
`
`References Cited
`
`U.S. PATENT DOCUMENTS
`
`123/1922
`6/1983 HatZ et al.
`......
`4,386,589 A *
`4/1999 Chen ................... 455/522
`5,893,035 A *
`
`...... 455/410
`5,978,669 A * 11/1999 Sanmugam
`
`4/2000 Wickman ................ 455/422.1
`6,047,177 A *
`6,067,460 A *
`5/2000 Alanara et al.
`............. 455/574
`6,256,301 B1 *
`7/2001 Tiedemann et al.
`.. 370/342
`
`...................... 455/436
`6,275,701 B1 *
`8/2001 Cerwall
`6,377,563 B1 *
`4/2002 Jeon et al.
`.................. 370/335
`
`FOREIGN PATENT DOCUMENTS
`
`EP
`W0
`W0
`W0
`
`0 888 026
`WO 98/23122
`WO 98/28888
`WO 99/35872
`
`12/1998
`5/1998
`7/1998
`7/1999
`
`OTHER PUBLICATIONS
`
`“RRC Protocol Specification”, TS 25.331 (Jan. 1, 2000) (3
`GPP TSG RAN WG 1).
`
`(Continued)
`
`Primary Examiner—CongVan Tran
`(74) Attorney, Agent, or Firm—Kenyon & Kenyon
`
`(57)
`
`ABSTRACT
`
`A method of transmitting signaling information between a
`master station and a slave station, a master station, a slave
`station, and various message elements are used to reduce the
`power consumption in a mobile slave station. A third mes-
`sage, Which contains information regarding Whether data to
`be sent is processed in the master station to increase the
`reception quality of this data at the slave station, is trans-
`mitted with the signaling information from the master sta-
`tion to the slave station.
`
`See application file for complete search history.
`
`44 Claims, 6 Drawing Sheets
`
`m,5
`
`PAEIIE
`
`“:1
`
`ME DMNEETIHN NEflUEST
`RH EENHEEIIEN SETUP
`
`DE EAI’ABILIIV INF“
`[IE BAP. [NED WMFINM
`
`DIRECT TRANSFER
`]|] ~—-—-—
`
`H]
`
`H)
`
`J0
`
`J1]
`
`JP
`
`
`
`RAE SETUP
`
`W.
`DATA EKCNMEE
`
`
`
`
`
`

`

`Case 2:20-cv-00322-JRG Document 1-5 Filed 10/01/20 Page 3 of 23 PageID #: 105
`Case 2:20-cv-00322-JRG Document 1-5 Filed 10/01/20 Page 3 of 23 PageID #: 105
`
`US 6,983,147 B1
`
`Page 2
`
`US. PATENT DOCUMENTS
`
`OTHER PUBLICATIONS
`
`455/436
`..........
`8/2003 Park et a1.
`6,609,003 B1 *
`6,667,965 B1 * 12/2003 Yamaura et a1.
`............ 370/347
`6,708,041 B1 *
`3/2004 ButOVitsch et a1.
`......... 455/522
`6,765,897 B2 *
`7/2004 Cordier et a1.
`.............. 370/342
`
`
`
`“Summary of Joint Predistortion” (TSG-RAN WG 1).
`“Signalubertragung,” Luke, springepverlag, 5th Ed., 1991.
`
`* cited by examiner
`
`

`

`Case 2:20-cv-00322-JRG Document 1-5 Filed 10/01/20 Page 4 of 23 PageID #: 106
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`
`US. Patent
`
`Jan. 3, 2006
`
`Sheet 1 0f 6
`
`US 6,983,147 B1
`
`
`
`Fig.1
`
`

`

`Case 2:20-cv-00322-JRG Document 1-5 Filed 10/01/20 Page 5 of 23 PageID #: 107
`Case 2:20-cv-00322-JRG Document 1-5 Filed 10/01/20 Page 5 of 23 PageID #: 107
`
`US. Patent
`
`Jan. 3, 2006
`
`Sheet 2 0f 6
`
`US 6,983,147 B1
`
`RRC CONNECTION REOUEST
`
`>RRC CONNECHON SETUP
`
`t2
`
`UE CAPABILITY INFO
`
`_UE CAP.INFO CONFIRM
`
`_ DIRECT TRANSFER
`
`JO
`
`JD
`
`JO
`
`JO
`
`JP
`
` PABWO
`JO
`
`
`
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`
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`
`RAB SETUP
`
`RAB SETUP COMPLETE
`
`. OATA EXCHANGE
`
`Fi g. 2
`
`t
`
`

`

`Case 2:20-cv-00322-JRG Document 1-5 Filed 10/01/20 Page 6 of 23 PageID #: 108
`Case 2:20-cv-00322-JRG Document 1-5 Filed 10/01/20 Page 6 of 23 PageID #: 108
`
`US. Patent
`
`Jan. 3, 2006
`
`Sheet 3 0f 6
`
`US 6,983,147 B1
`
`JD
`
`JD
`
`JD
`
`JD
`
`JD
`
`JD
`
`JP
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`PRC EDNN.SETUP CDMPLETE
`
`UE CAPABJLJTY INFD
`
`.1
`
`UE CAPINFD EDNFIRM
`
`DIRECT TRANSFER
`
`RAB SETUP
`
`RAB SETUP COMPLETE
`
`TRCH RECDNEJDURAHDN
`
`TREH RECDNFID.CDMPLETE
`
`.
`
`DATA tx/rx
`
`,
`
`
`
`
`
`

`

`Case 2:20-cv-00322-JRG Document 1-5 Filed 10/01/20 Page 7 of 23 PageID #: 109
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`
`US. Patent
`
`Jan. 3, 2006
`
`Sheet 4 0f 6
`
`US 6,983,147 B1
`
`J“
`
`JD
`
`JP
`
`JP
`
`JP
`
`JP
`
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`
`PAGWG
`
`RUE CONNECTION REQUEST _
`
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`
`RRC CDNN.SETUP EDMPLETE
`
`MREDT TRANSFER
`
`RAB SETUP
`
`RAB SETUP COMPLETE
`
`TRCH RECUNFIBURATIUN
`
`TRCH REEUNFIB CUMPLET
`
`7
`
`DATA tx/rx
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`Fig.1.
`
`t
`
`

`

`Case 2:20-cv-00322-JRG Document 1-5 Filed 10/01/20 Page 8 of 23 PageID #: 110
`Case 2:20-cv-00322-JRG Document 1-5 Filed 10/01/20 Page 8 of 23 PageID #: 110
`
`US. Patent
`
`Jan. 3, 2006
`
`Sheet 5 0f 6
`
`US 6,983,147 B1
`
`_
`
`5
`
`1
`
`
`
`UE CAP. INFO R‘Efl-U’EST
`
`UE CAPABILITY IN'FU
`
`“
`
`t1
`
`12
`
`,
`
`UE CAP.
`
`INFO EUNzFIRM
`
`‘
`
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`
`
`
`
`
`
`
`
`RA-B SETUP COMPLETE
`
`__
`
`DATA tx/rx
`
`.
`
`10
`
`JD
`
`JD
`
`JD
`
`JD
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`JP
`
`Fig.5
`
`1
`
`

`

`Case 2:20-cv-00322-JRG Document 1-5 Filed 10/01/20 Page 9 of 23 PageID #: 111
`Case 2:20-cv-00322-JRG Document 1-5 Filed 10/01/20 Page 9 of 23 PageID #: 111
`
`US. Patent
`
`Jan. 3, 2006
`
`Sheet 6 0f 6
`
`US 6,983,147 B1
`
`Fig.5
`
`
`
`

`

`Case 2:20-cv-00322-JRG Document 1-5 Filed 10/01/20 Page 10 of 23 PageID #: 112
`Case 2:20-cv-00322-JRG Document 1-5 Filed 10/01/20 Page 10 of 23 PageID #: 112
`
`US 6,983,147 B1
`
`1
`METHOD OF TRANSMITTING SIGNALING
`INFORMATION, A MASTER STATION, A
`MOBILE STATION AND MESSAGE
`ELEMENTS
`
`FIELD OF THE INVENTION
`
`The present invention relates to a method of transmitting
`signaling information between a master station and a slave
`station, a master station, a slave station and message ele-
`ments.
`
`BACKGROUND INFORMATION
`
`“RRC Protocol Specification,” TS 25.331 of Jan. 1, 2000,
`3 GPP TSG RAN WG 1) describes that signaling informa-
`tion can be transmitted between a base station and a mobile
`
`station to set up at least one transmission channel between
`the base station and the mobile station dedicated specifically
`to data exchange between the base station and the mobile
`station. For such a transmission channel, the pulse response
`may be estimated, and the estimated pulse response may be
`used for predistortion of the signal to be transmitted, so that
`an arrangement for removing distortion may be omitted in
`the slave station. Such a method of predistortion is the joint
`predistortion method described in “Summary of Joint Pre-
`distortion”, TSG-RAN WG1.
`In use of such a predistortion method for transmission of
`data over the specially set-up data channel from the base
`station to the mobile station as described in “RRC Protocol
`
`Specification,” the problem arises that it is not known in the
`mobile station whether or not the base station is transmitting
`the data predistorted over the at least one specially allocated
`transmission channel. Therefore, the mobile station cannot
`decide whether or not it must eliminate distortion from the
`
`data received by the base station over the specially set-up
`transmission channel.
`
`SUMMARY
`
`In an example method according to the present invention
`for transmitting signaling information, an example master
`station according to the present invention and an example
`slave station according to the present
`invention, a third
`message is transmitted with the signaling information from
`the master station to the slave station containing information
`regarding whether processing of data to be sent is performed
`in the master station or in an additional master station
`
`downstream from and assigned to the slave station to
`increase the reception quality of this data at the slave station.
`Thus, before setting up a transmission channel from the
`master station to the slave station, the slave station is able to
`decide how it may detect the data to be sent by the master
`station or the data to be sent by the other master station
`downstream from and assigned to the slave station in order
`to be able to guarantee optimum data reception. If the slave
`station determines that the data to be sent by the correspond-
`ing master station has already been processed in the corre-
`sponding master station, then it may omit a complicated
`distortion elimination because the data will arrive at the
`
`slave station with a suitably increased reception quality.
`Power consumption at the slave station may be minimized in
`this manner, which may be advantageous when configuring
`the slave station as a mobile station with battery operation.
`Information regarding the type of processing of the data
`to be sent may be transmitted with the third message from
`the master station to the slave station. In this manner, any
`
`10
`
`15
`
`20
`
`25
`
`30
`
`35
`
`40
`
`45
`
`50
`
`55
`
`60
`
`65
`
`2
`elimination of distortion, which may be necessary in the
`slave station, is further differentiated so that the distortion
`elimination in the slave station may be adapted to processing
`of the signals to be transmitted in a manner that is optimal
`for the transmission channel to be set up. Further optimiza-
`tion or minimization of the power consumption in the slave
`station may be achieved in this manner. Furthermore, it is
`possible to prevent faulty distortion elimination that is not
`adapted to the type of processing of data to be transmitted.
`The third message with regard to multiple transmission
`channels for the transmission of the data to be sent
`is
`
`transmitted when the type of processing in these transmis-
`sion channels is the same. This makes it possible to mini-
`mize the quantity of data necessary for transmission of the
`third message.
`Together with the signaling information before the third
`message, a second message may be transmitted from the
`slave station to the master station containing information
`regarding which type(s) of processing of the data to be sent
`by the master station is/are supported by the slave station for
`detection of this data. This makes it possible to prevent the
`master station from processing the data to be sent to the
`slave station in a manner in which distortion may be
`eliminated by the slave station only to a limited extent or not
`at all. Instead, the master station may adapt the processing
`of the data to be sent to the slave station to the detection
`
`mechanisms or distortion elimination mechanisms sup-
`ported by the slave station to guarantee an optimum trans-
`mission.
`
`The signaling information may be transmitted in a pro-
`cessed form as the data to be sent from the master station to
`
`the slave station at the earliest when, on the basis of the
`second message, the type of processing supported by the
`slave station or the types of processing supported by the
`slave station is/are known at the master station, the process-
`ing occurring in a manner supported by the slave station, and
`when the third message has been transmitted to the slave
`station. In this manner, even before the special transmission
`channel from the master station to the slave station has been
`
`set up, signaling information may be processed in the master
`station so that its reception quality at the slave station is
`increased, and thus less complexity may be required for
`elimination of distortion in the slave station, so that it is
`possible to save on the cost of distortion elimination in the
`slave station at the earliest point possible and thus also
`reduce power consumption.
`Together with the signaling information before the third
`message, a first message may be transmitted from the master
`station to the slave station containing information regarding
`which type(s) of processing of the data to be sent is/are
`supported by the master station. In this manner, the slave
`station is able to select a type of processing of the data to be
`sent and make known to the master station the selected type
`of processing by way of the second message. The selection
`may be made by the slave station in which a way as to permit
`detection and distortion elimination of the data to be trans-
`mitted from the master station in a manner that
`is as
`
`favorable as possible for it and saves on complexity and
`power consumption.
`the second message and the third
`The first message,
`message may each be transmitted between the master station
`and the slave station via a message element and may thus be
`integrated easily into an existing signaling protocol.
`
`

`

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`US 6,983,147 B1
`
`3
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`FIG. 1 is a block diagram illustrating an example master
`station and an example slave station according to the present
`invention.
`
`FIG. 2 is a flow chart illustrating the exchange of signal-
`ing information according to a first example embodiment of
`the present invention.
`FIG. 3 is a flow chart illustrating the exchange of signal-
`ing information according to a second example embodiment
`of the present invention.
`FIG. 4 is a flow chart illustrating the exchange of signal-
`ing information according to a third example embodiment of
`the present invention.
`FIG. 5 is a flow chart illustrating the exchange of signal-
`ing information according to a fourth example embodiment
`of the present invention.
`FIG. 6 illustrates an arrangement of an example slave
`station according to the present invention for use in a cellular
`mobile wireless network before transmission from a master
`station to another master station.
`
`DETAILED DESCRIPTION
`
`FIG. 1 illustrates a master station 1 of a telecommunica-
`
`tions network, which may be configured to be wireless or
`hardwired. FIG. 1 also illustrates a slave station 5 of the
`
`telecommunications network, which may be configured to
`be wireless or hardwired. Between master station 1 and slave
`
`station 5, at least one transmission channel may be set up
`which may also be wireless or hardwired depending on the
`configuration of master station 1 and slave station 5. Data is
`to be transmitted from master station 1 to slave station 5 over
`this at
`least one transmission channel,
`the at
`least one
`transmission channel being dedicated specifically to this
`data transmission from master station 1 to slave station 5. At
`
`least one separate transmission channel in each case may be
`set up for the transmission of data from master station 1 to
`other slave stations. Such a transmission channel which is
`dedicated to the transmission of data from master station 1
`
`to a special slave station is also referred to below as a
`dedicated channel. When a transmission channel is men-
`tioned below,
`it should be understood to refer to such a
`dedicated channel. To form such a dedicated channel, one or
`more physical
`resources may be used. These physical
`resources may include a frequency, a period of time, e.g., in
`the form of a time slot, a spatial sector, e.g., in the emission
`range of an antenna, a code, etc. If master station 1 supplies
`multiple slave stations with data, the individual transmission
`channels from master station 1 may be multiplexed, with the
`individual slave stations each being able to access the
`transmission channel assigned to them in accordance with
`the physical resources used according to a suitable channel
`access method to receive the data sent from master station 1
`
`to these slave stations. Depending on the physical resources
`used, this channel access method may include a frequency
`division multiple access method (FDMA), a time division
`multiple access method (TDMA), a space division multiple
`access method (SDMA), a code division multiple access
`method (CMDA), etc. or any combination of these methods.
`For example, master station 1 may be a base station and
`slave station 5 may be configured as a mobile station of a
`mobile wireless network. The at
`least one transmission
`
`channel to be set up between base station 1 and mobile
`station 5 is configured a wireless channel. The mobile
`wireless network, base station 1 and mobile station 5 may be
`configured, for example, according to the GSM standard
`
`10
`
`15
`
`20
`
`25
`
`30
`
`35
`
`40
`
`45
`
`50
`
`55
`
`60
`
`65
`
`4
`
`the UMTS
`(global system for mobile communications),
`standard (universal mobile telecommunication system), etc.
`For example, the mobile wireless network, base station 1
`and mobile station 5 may be configured according to the
`UMTS standard, and the mobile wireless network according
`to the UMTS standard may be based on a CDMA system in
`TDD mode (time division duplex). Ahalf duplex connection
`is set up between base station 1 and mobile station 5,
`providing different time slots for the transmission from base
`station 1 to mobile station 5 and from mobile station 5 to
`
`base station 1. At least one time slot is provided for the
`transmission from base station 1 to mobile station 5. The
`data transmitted from base station 1 to mobile station 5 in
`
`this time slot is coded according to a CDMA code and
`modulated to a carrier frequency. The CDMA code, the time
`slot and the carrier frequency are each a physical resource,
`the combination of which forms a transmission channel from
`base station 1 to mobile station 5. Mobile station 5 includes
`
`a first receiving unit 85, which is connectable alternately to
`a first detection arrangement 30 or a second detection
`arrangement 35 over first selector arrangement 25. First
`analyzer arrangement 20 is connected to first receiving unit
`85. First analyzer arrangement 20 activates first message
`generating arrangement 40, and first selector arrangement 25
`activates mobile station 5. A first receiving antenna 60 is
`connected to first receiving unit 85, and a transmitting
`antenna 70, of mobile station 5, is connected to first message
`generating arrangement 40. First receiving antenna 60 and
`transmitting antenna 70 of mobile station 5 may also be
`combined via an antenna splitter, for example, and joined
`together to form a common transmitting/receiving antenna.
`Base station 1 includes a second analyzer arrangement 50, a
`second message generating arrangement 45 and a processing
`unit 55. A second receiving antenna 65 is connected to
`second analyzer arrangement 50 a second receiving unit 90.
`Processing unit 55 is optionally connectable to a first
`antenna unit 10 or to a second antenna unit 15, over second
`selector
`arrangement 75. Second message generating
`arrangement 45 is optionally connectable to first antenna
`unit 10 or to processing unit 55 over a third selector
`arrangement 80. First selector arrangement 25, second selec-
`tor arrangement 75 and third selector arrangement 80 may
`each be a configured a controllable switch as illustrated in
`FIG. 1, first selector arrangement 25 being activated by first
`analyzer arrangement 20 and second selector arrangement
`75 and third selector arrangement 80 being activated by
`second analyzer arrangement 50. First antenna unit 10 is
`configured a single transmitting antenna. Second antenna
`unit 15 includes at
`least
`two transmitting antennas and
`makes it possible to send out signals in a transmission
`diversity operation. With base station 1 it is also possible to
`combine transmitting and receiving antennas in the manner
`described with respect to mobile station 5 into one or (in the
`case of transmission diversity operation) multiple transmit-
`ting/receiving antennas by using an antenna splitter.
`To set up at least one transmission channel from base
`station 1 to mobile station 5, first an exchange of signaling
`information between base station 1 and mobile station 5 may
`be necessary to cause the corresponding allocation of physi-
`cal resources necessary to form the transmission channel.
`The present invention provides for the data that is to be sent
`from base station 1 to mobile station 5 over the transmission
`
`channel to be set up to be processed in base station 1 to
`increase the quality of reception of this data at mobile station
`5. Detection of the data thus received then may require little
`or no additional complexity in mobile station 5, so that the
`power consumption in mobile station 5 is reduced and the
`
`

`

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`US 6,983,147 B1
`
`5
`standby time of mobile station 5 is increased. Mobile station
`5 is capable of switching between two different detection
`arrangements 30, 35, depending on the quality with which
`the data is to be received from base station 1. However, to
`do so, mobile station 5 should know whether the data to be
`sent has been processed at all in base station 1. Therefore,
`before setting up the transmission channel, a third message
`is transmitted from base station 1 to mobile station 5 with the
`
`signaling information, containing information regarding
`whether processing of the data to be sent is performed in
`master station 1. The third message is generated by second
`message generating arrangement 45 and emitted over third
`selector arrangement 80 and first antenna unit 10 to first
`receiving unit 85. First analyzer arrangement 20 then checks
`on the basis of the third message to determine whether
`processing of the data to be sent is performed in base station
`1. If this is the case, then first detection arrangement 30 is
`selected for
`the detection. Otherwise, second detection
`arrangement 35 is selected for the detection. Optionally, the
`data to be sent may be processed in base station 1 in various
`manners. Then, with the third message, information regard-
`ing the type of processing of the data to be sent is also
`transmitted from base station 1 to slave station 5. To this as
`
`indicated with dotted lines in FIG. 1, mobile station 5 may
`include third detection arrangement 36, which may also be
`connectable to first receiving unit 85 over first selector
`arrangement 25. First analyzer arrangement 20 checks first
`on the basis of the third message whether the data to be sent
`has already been processed in base station 1. If this is not the
`case, then first analyzer arrangement 20 causes first selector
`arrangement 25 to connect first receiving unit 85 to second
`detection arrangement 35. Otherwise, first analyzer arrange-
`ment 20 checks on the basis of the third message to
`determine the type of processing of the data to be sent in
`base station 1. Depending on the type of processing, first
`analyzer arrangement 20 may then cause first selector
`arrangement 25 to connect first detection arrangement 30 or
`third detection arrangement 36 to first receiving unit 85. The
`data to be sent from base station 1 is then detected by the
`detection arrangement connected to first receiving unit 85.
`It is possible to provide for the data to be sent from base
`station 1 to mobile station 5 to be transmitted in a single
`dedicated transmission channel. However, it is also possible
`for multiple dedicated transmission channels may to be set
`up for the transmission. The third message is then transmit-
`ted individually from base station 1 to first analyzer arrange-
`ment 20 over first receiving unit 85 for each transmission
`channel to be set up. This may be performed e.g., if the data
`to be sent in the various transmission channels is to be
`
`processed by different methods in base station 1 or if data
`without processing is to be sent in one transmission channel
`and data with processing is to be sent in another transmission
`channel. However,
`if data without processing is to be
`transmitted from base station 1 to mobile station 5 in
`
`multiple transmission channels or if data processed accord-
`ing to the same method is to be transmitted in various
`transmission channels, then it is also possible for a single
`third message with regard to multiple transmission channels
`to be transmitted from base station 1 to mobile station 5 if
`
`the type of processing in these transmission channels is the
`same or if no processing occurs in these transmission
`channels.
`
`Processing of the data to be sent may occur in base station
`1 in various manners. First, the data to be sent from base
`station 1 may be emitted using a transmission diversity
`method by first antenna unit 10 having one transmitting
`antenna or by second antenna unit 15 having multiple
`
`10
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`15
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`6
`transmitting antennas. Use of first antenna unit 10 having
`one transmitting antenna represents the traditional case
`without processing of the data to be sent. When using second
`antenna unit 15 having multiple transmitting antennas, a
`multiway reception is generated in mobile station 5 through
`which signal dips or fading on one or more of the reception
`pathways may be compensated by a reception pathway
`without fading. Thus, with the third message it is possible to
`transmit information regarding whether the data to be sent
`from base station 1 is to be emitted by first antenna unit 10
`or by second antenna unit 15. If the data to be sent is emitted
`by first antenna unit 10, first analyzer arrangement 20 causes
`second detection arrangement 35 to be connected over first
`selector arrangement 25 to first receiving unit 85. Otherwise,
`third detection arrangement 36 is connected to first receiving
`unit 85 over first selector arrangement 25. Second detection
`arrangement 35 then performs distortion removal and detec-
`tion on the received data in a conventional manner, e.g.,
`according to a joint detection method (JD). Such a method
`is described in “System Description Performance Evalua-
`tion,” Concept Group Delta WB-TDMA/CDMA, ETSI,
`SMG2. This method includes a combined cancellation of
`
`interference.
`multiple user interference and intersymbol
`Multiple user interference occurs due to mutual influencing
`of codes assigned to different mobile stations in transmission
`over multiplexed transmission channels. Intersymbol inter-
`ference occurs due to multiway propagation of signals in the
`radio channel.
`
`Third detection arrangement 36 may also operate accord-
`ing to a JD method adapted to second antenna unit 15 used
`with regard to the estimate of the pulse response of the
`transmission channels used, which may be necessary for
`removing distortion.
`Processing of the data to be sent from base station 1 may
`also occur by predistortion of the data to be sent in process-
`ing unit 55. The predistortion is then compensated by the
`properties of the transmission channel
`to be set up in
`comparison with second detection arrangement 35 so that
`the data to be sent from base station 1 arrives undistorted at
`
`first receiving unit 85 and thus distortion removal may no
`longer be necessary in mobile station 5. The data received
`may then be detected by first detection arrangement 30, e.g.,
`simply by correlation reception, to which end first detection
`arrangement 30 is to be connected to first receiving unit 85
`over first selector arrangement 25.
`First detection arrangement 30 may thus be configured
`merely as
`a correlation receiver, e.g., according to a
`“matched filter” concept such as that described in “Signalii-
`bertragung,”, Liike, Springer-Verlag, 5th edition, 1991
`because it detects suitably processed data from base station
`1 arriving undistorted and therefore with a high reception
`quality at mobile station 5.
`However, if the data is sent from base station 1 without
`predistortion to mobile station 5 over first antenna unit 10,
`the data reaches first receiving unit 85 with distortion and
`should be sent
`to second detection arrangement 35 for
`distortion removal at an increased outlay. This is much less
`complex and consumes less power than a strict correlation
`reception, for example, with first detection arrangement 30.
`Either the third message is omitted in this case or the third
`message in this case contains information indicating that no
`processing occurs in the base station.
`An even higher reception quality may be achieved if the
`predistortion is linked to the emission over second antenna
`unit 15 so that the signals to be sent arrive at first receiving
`unit 85 not only without distortion but also without signal
`dips or fading. In this case, only first detection arrangement
`
`

`

`Case 2:20-cv-00322-JRG Document 1-5 Filed 10/01/20 Page 13 of 23 PageID #: 115
`Case 2:20-cv-00322-JRG Document 1-5 Filed 10/01/20 Page 13 of 23 PageID #: 115
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`US 6,983,147 B1
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`7
`30 may be connected with strict correlation reception to first
`receiving unit 85 over first selector arrangement 25, for
`example. Then with the third message, information is trans-
`mitted indicating that the data to be sent from base station 1
`is emitted by second antenna unit 15 and a predistortion of
`the data sent is performed in base station 1.
`First selector arrangement 25 for connecting the corre-
`sponding detection arrangement to first receiving unit 85 is
`controlled by first analyzer arrangement 20 after analysis of
`the corresponding third message.
`With the CDMA system in TDD mode described here, the
`joint predistortion method (JP), as described in “Summary
`of Joint Predistortion”, may be used for performing predis-
`tortion. Accordingly, with the third message, information
`regarding whether predistortion is performed by the JP
`method for the data to be sent is transmitted from base
`station 1 to mobile station 5. In the JP method, base station
`1 estimates the pulse response of the transmission channel
`from mobile station 5 to base station 1 by way of the time
`slots used for the transmission from mobile station 5 to base
`
`station 1. This estimate may also be used for the transmis-
`sion channel to be set up from base station 1 to mobile
`station 5 because in TDD mode the transmission properties
`of the two transmission channels are essentially the same in
`the forward and return directions, and there are no frequency
`differences. The data to be sent is then folded with the
`
`inverse estimated pulse response before being transmitted to
`mobile station 5, and thus it is predistorted.
`It is possible to provide for second message to be trans-
`mitted from mobile station 5 to base station 1 with the
`
`signaling information before the third message containing
`information regarding which type(s) of processing of the
`data to be sent from base station 1 is/are supported by mobile
`station 5 for detection this data. The second message is
`generated by first message generating arrangement 40 and
`emitted by transmitting antenna 70 of mobile station 5 to
`base station 1 where it is received by second receiving unit
`90 over second receiving antenna 65 and forwarded to
`second analyzer arrangement 50. The types of processing
`supported by mobile station 5 depend on detection arrange-
`ments 30, 35, 36 connectable to first receiving unit 85 over
`first analyzer arrangement 25 in mobile station 5. Thus, in
`this example embodiment of the present
`invention,
`the
`second message may contain the information that detection
`in mobile station 5 is possible by strict correlation reception
`and detection with prior distortion removal according to a
`joint detection method in two different stages with regard to
`the outlay for error detection and/or correction. Second
`analyzer arrangement 50 analyzes the second message to
`determine which type(s) of processing of signals to be sent
`is/are supported by mobile station 5. Second analyzer
`arrangement 50 then checks whether this type or these types
`of processing is/are also supported by base station 1. In this
`example embodiment of the present invention, second ana-
`lyzer arrangement 50 ascertains that the detection offered by
`mobile station 5 is compatible, for example, with processing
`by predistortion and/or by predistortion and transmission
`diversity operation through strict correlation reception. In
`addition, second analyzer arrangement 50 ascertains on the
`basis of the second message that the data to be sent may not
`be sent to mobile station 5 or may be sent only in a partially
`processed form by transmission diversity operation because
`with the joint detection method the signals that are distorted
`on the transmission channel to be set up and are influenced
`to a greater or lesser extent by fading may be subjected to
`distortion removal and detected. Second analyzer arranges
`50 in this example embodiment ascertain that the types of
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`processing supported by mobile s