(19) United States
`(12) Patent Application Publication (10) Pub. No.: US 2003/0076799 A1
`Kwak et al.
`(43) Pub. Date:
`Apr. 24, 2003
`
`US 2003OO76799A1
`
`(54) DPCH MULTIPLEXING APPARATUS AND
`METHOD FOR OUTER LOOP POWER
`CONTROL IN A W-CDMA
`COMMUNICATION SYSTEM
`(75) Inventors: Yong-Jun Kwak, Yongin-shi (KR);
`Sung-Ho Choi, Songnam-shi (KR);
`Beo ng-Jo Kim, Songnam-shi (KR);
`Ju-Ho Lee, Kyonggi-do (KR);
`Sung-Oh Hwang, Yongin-shi (KR)
`Correspondence Address:
`Paul J. Farrell, Esq.
`DILWORTH & BARRESE, LLP
`333 Earle Ovington Blvd.
`Uniondale, NY 11553 (US)
`(73) Assignee: SAMSUNG ELECTRONICS CO
`LTD., KYUNGKI-DO (KR)
`(21) Appl. No.:
`10/079,723
`
`es
`
`(22) Filed:
`(30)
`
`Feb. 19, 2002
`Foreign Application Priority Data
`
`Feb. 19, 2001 (KR)....................................... 2001-10172
`
`Feb. 20, 2001 (KR)....................................... 2001-10951
`Feb. 22, 2001 (KR)......................................... 2001-9082
`May 9, 2001 (KR)....................................... 2001-25208
`
`Publication Classification
`
`(51) Int. Cl. .............................. H04B 71216; H04J 3/12
`(52) U.S. Cl. ............................................ 370/335; 370/528
`
`(57)
`
`ABSTRACT
`
`Disclosed is a method for transmitting a dedicated physical
`data channel Signal Over a dedicated physical data channel in
`the absence of transmission data to be transmitted over the
`dedicated physical data channel in order to properly main
`tain a target SIR (Signal-to-Interference Ratio) when there
`exists new transmission data after the absence of the trans
`mission data in a CDMA (Code Division Multiple Access)
`mobile communication System. The method comprises gen
`erating a dummy bit generation request Signal in the absence
`of the transmission data; and upon receipt of the dummy bit
`generation request Signal, generating a dummy bit Stream,
`and transmitting a dedicated physical data channel Signal
`created by attaching the CRC bit stream to the dummy bit
`Stream.
`
`NFORMATON DATA
`
`CRC DETECTION
`
`TAL BIT. OSCARD
`VITERB CODING R= 1/3
`
`RATE MACHING
`
`1ST INTEREAVING
`
`804.
`
`686
`
`686
`
`
`
`NFORMATION DATA
`
`CRC DETECTION
`
`TAL BIT DISCARD
`907 VITERB CODING R= 1/3
`
`90S
`
`911
`
`RATE MACHING
`
`1ST INTERLEAVING
`
`308
`
`3O8
`
`939
`9
`41
`
`-
`
`-
`
`- -
`
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`
`- - - - - - - - - - - - - - - - - - - - - - - - -- a-- - - - !---------------------------------
`
`it 343
`
`#2 343
`S-2-
`
`919
`
`SEEEMEN 91
`EGMENTATION,
`SEGMENTATIO
`2ND MERLEAVING
`921
`SLOT SEGMENTATION o
`
`
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`28, 28
`
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`3OKSPS DPCH
`BITS)
`(INCLUDING IFC
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`RADIO FRAMEFN=4N+1 RADIO FRAME FN=4N+2
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`Patent Application Publication Apr. 24, 2003. Sheet 2 of 13
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`Patent Application Publication Apr. 24, 2003. Sheet 3 of 13
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`US 2003/0076799 A1
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`BK CONCATENATION
`CODE BLOCK SEGMENTATION
`
`
`
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`Patent Application Publication Apr. 24, 2003 Sheet 4 of 13
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`US 2003/0076799 A1
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`Patent Application Publication Apr. 24, 2003. Sheet 5 of 13
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`US 2003/0076799 A1
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`Apr. 24, 2003 Sheet 7 of 13
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`US 2003/0076799 A1
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`Patent Application Publication
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`Apr. 24, 2003 Sheet 9 of 13
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`Patent Application Publication
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`Apr. 24, 2003 Sheet 10 of 13 US 2003/0076799 A1
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`Patent Application Publication Apr. 24, 2003 Sheet 12 of 13 US 2003/0076799 A1
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`TRANSMISSION OF DATA:CRC" "
`
`12O3
`RANSPOR CHANNEDATA EXISTS?
`
`TRANSMISSION OF "DUMMY BITS+CRC"
`
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`Patent Application Publication Apr. 24, 2003 Sheet 13 of 13 US 2003/0076799 A1
`
`1301
`
`INFORMATION BITS - 305
`
`
`
`CONTROLLER
`DUMMY BIT GENERATOR
`- 1309 - A
`DUMMY BIT GENERATION
`REQUEST SIGNAL
`b.
`CRC ATTACHMENT
`
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`DUMMY BIT STREAM 1303
`
`~-1307
`
`
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`1311
`
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`
`1313
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`FIG. 13
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`US 2003/0076799 A1
`
`Apr. 24, 2003
`
`DPCH MULTIPLEXINGAPPARATUS AND
`METHOD FOR OUTER LOOP POWER CONTROL
`INA W-CDMA COMMUNICATION SYSTEM
`0001. This application claims priority to an application
`entitled “DPCH Multiplexing Apparatus and Method for
`Outer Loop Power Control in a W-CDMA Communication
`System filed in the Korean Industrial Property Office on
`Feb. 19.2001 and assigned Serial No. 2001-10172, an appli
`cation entitled “DPCH Multiplexing Apparatus and Method
`for Outer Loop Power Control in a W-CDMA Communica
`tion System” filed in the Korean Industrial Property Office
`on Feb. 20, 2001 and assigned Serial No. 2001-10951, an
`application entitled “DPCH Multiplexing Apparatus and
`Method for Outer Loop Power Control in a W-CDMA
`Communication System' filed in the Korean Industrial Prop
`erty Office on Feb. 22, 2001 and assigned Serial No.
`2001-9082, an application entitled “DPCH Multiplexing
`Apparatus and Method for Outer Loop Power Control in a
`W-CDMA Communication System” filed in the Korean
`Industrial Property Office on May 9, 2001 and assigned
`Serial No. 2001-25208, the contents of all of which are
`hereby incorporated by reference.
`
`BACKGROUND OF THE INVENTION
`0002) 1. Field of the Invention
`0003. The present invention relates generally to a CDMA
`(Code Division Multiple Access) mobile communication
`system, and in particular, to a DPCH (Dedicated Physical
`Channel) multiplexing apparatus and method for performing
`outer loop power control by properly maintaining a target
`SIR (Signal-to-Interference Ratio).
`0004 2. Description of the Related Art
`0005. In general, a channel structure of a UMTS (Uni
`versal Mobile Terrestrial System) CDMA mobile commu
`nication System is classified into a physical channel, a
`transport channel and a logical channel. The physical chan
`nel is divided into a downlink physical channel and an
`uplink physical channel according to its data transmission
`direction. Further, the downlink physical channel is divided
`into a physical downlink shared channel (PDSCH) and a
`downlink dedicated physical channel (DPCH), which will be
`described with reference to FIG. 1.
`0006 FIG. 1 illustrates a structure of a downlink dedi
`cated physical channel in a mobile communication System.
`Referring to FIG. 1, each frame of the downlink dedicated
`physical channel is comprised of 15 slots Slotif.0-Sloti 14.
`Each slot is comprised of dedicated physical data channels
`(DPDCHs) for transmitting upper layer data from a Node B
`to a UE (User Equipment), and dedicated physical control
`channels (DPCCHS) for transmitting a physical layer control
`signal. The dedicated physical control channel DPCCH is
`comprised of a TPC (Transport Power Control) symbol for
`controlling transmission power of the UE, a TFCI (Transport
`Format Combination Indicator) symbol, and a pilot symbol.
`As illustrated in FIG. 1, each of the slots Sloti 1-Sloti 14
`constituting one frame of the downlink dedicated physical
`channel is comprised of 2560 chips. in FIG. 1, a first data
`Symbol Data1 and a Second data Symbol Data2 represent
`upper layer data transmitted from the Node B to the UE over
`the dedicated physical data channel DPDCH, and the TPC
`Symbol represents information for controlling transmission
`
`power of the UE by the Node B. Further, the TFCI symbol
`indicates a transport format combination (TFC) used for a
`downlink channel transmitted for a current one frame (=10
`ms). Finally, the pilot symbol represents a criterion for
`controlling transmission power of the dedicated physical
`channel by the UE. Here, information included in the TFCI
`can be classified into a dynamic part and a Semi-static part.
`The dynamic part includes TBS (Transport Block Size)
`information and TBSS (Transport Block Set Size) informa
`tion. The semi-static part includes TTI (Transmission Time
`Interval) information, channel coding Scheme information,
`coding rate information, Static rate matching information,
`and CRC (Cyclic Redundancy Check) size information.
`Therefore, the TFCI indicates the number of transport blocks
`(TB) in a channel transmitted for one frame, and assigns
`unique numbers to TPCs used in each of the transport
`blocks.
`0007 FIG. 2 illustrates a structure of an uplink dedicated
`physical channel in a mobile communication System. Refer
`ring to FIG.2, like the downlink dedicated physical channel,
`the uplink dedicated physical channel is comprised of 15
`slots Slotif 1-Slotif14. The uplink dedicated physical channel
`has an uplink dedicated physical data channel (DPDCH) and
`an uplink dedicated physical control channel (DPCCH).
`Each of the slots SlotiiO-Sloti 14 constituting one frame of
`the uplink dedicated physical data channel DPDCH trans
`mits upper layer data from the UE to the Node B.
`0008 Meanwhile, each of the slots Slotho-Sloth 14,
`which constitutes one frame of the uplink dedicated physical
`control channel is comprised of (i) a pilot Symbol used as a
`channel estimation Signal when demodulating data transmit
`ted from the UE to the Node B, (ii) a TFCI symbol indicating
`a transport format combination (TFC) of channels transmit
`ted for a current frame, (iii) an FBI (FeedBack Information)
`Symbol for transmitting feedback information when trans
`mission diversity is used, and (iv) a TPC symbol for
`controlling transmission power of the downlink channels.
`0009 Transmission power of the downlink/uplink dedi
`cated physical channels shown in FIGS. 1 and 2 is con
`trolled by a high-Speed power control method Such as a
`closed-loop power control method or an outer loop power
`control method. Herein, the outer loop power control will be
`described.
`0010. The outer loop power control method compares a
`target SIR required in the high-Speed power control method
`with an actual SIR of the channel, for both the downlink
`channel and the uplink channel, and controls the transmis
`Sion power by resetting a threshold for the closed-loop
`power control based on the comparison result between the
`target SIR and the actual SIR. In general, it is important for
`the power control method to maintain a bit error rate (BER)
`or a block error rate (BLER) in order to satisfy required
`communication performance. The outer loop power control
`method maintains the BER or the BLER at a required level
`by continuously resetting a threshold for maintaining the
`BER or the BLER. The UE and the Node B may measure the
`BER or the BLER through CRC error detection by analyzing
`CRC bits included in the received dedicated physical data
`channel.
`0011 FIG. 5 illustrates a structure of a physical downlink
`shared channel (PDSCH) in a mobile communication sys
`tem. Referring to FIG. 5, a 10 ms-frame of the physical
`
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`Apr. 24, 2003
`
`downlink shared channel is comprised of 15 slots Slotif.0-
`Slotif14. Since the UMTS system has a chip rate of 3.84
`Mcps, each of the slots is comprised of 2560 chips.
`0012. The physical downlink shared channel transmits
`upper layer data from the Node B to the UE in association
`with the dedicated physical channel, for power control and
`transport format combination indication. The physical
`downlink shared channel is shared by a plurality of UEs on
`a time division basis to efficiently transmit a large amount of
`packet data to the UES. In order for the UE to use the
`physical downlink shared channel, Separate dedicated physi
`cal channels between the UE and the Node B, (namely, the
`downlink dedicated physical channel and the uplink dedi
`cated physical channel associated (or interlocked) with the
`physical downlink shared channel) should be maintained.
`Therefore, in order for the UE to use the physical downlink
`shared channel, it should separately establish the downlink
`and uplink dedicated physical channels. For example, if N
`UEs use the physical downlink shared channel, N downlink
`and N uplink dedicated physical channels (i.e., one Such
`dedicated channel to each UE) are established so that the N
`UES share the physical downlink shared channel on a time
`division basis. Meanwhile, the physical downlink shared
`channel is a physically established channel So as to transmit
`a large amount of packet data, while the dedicated physical
`channel is physically established to transmit a relatively
`Small amount of control data and retransmission-related
`data, compared with the physical downlink shared channel.
`A detailed description of this will be made herein below.
`0013 ATFCI bit TFCI
`transmitted over the dedi
`cated downlink physical channel has information indicating
`a transport format of the physical downlink shared channel.
`Therefore, the downlink TFCI indicates a UE to which
`packet data was transmitted over the physical downlink
`shared channel after a lapse of a predetermined time from a
`given time point. The UE can recognize whether there is
`physical downlink shared channel data to receive, by con
`tinuously analyzing the downlink dedicated physical chan
`nel received. Therefore, when the TFCI received by the UE
`indicates that there exists data to receive in the physical
`downlink shared channel of the next frame, the UE receives
`the data transmitted by the Node B by demodulating and
`decoding a Signal received over the physical downlink
`shared channel at the next frame. During the data transmis
`Sion over the dedicated physical channel, transmission
`power is controlled using the Outer loop power control, a
`description of which will be separately made for normal
`transmission and gated transmission.
`0.014 When the uplink or downlink channel has no
`transport channel data during normal transmission, i.e.,
`normal data transmission, CRC bits are transmitted over the
`dedicated physical channel for the outer loop power control.
`However, if only the CRC bits are transmitted or repeated
`for the outer loop power control while there is no transport
`channel data, a combining gain will occur at the receiver,
`causing a decrease in a target SIR. Therefore, when there is
`transport channel data generated later, the BLER becomes
`high until the target SIR is recovered, because of the
`decrease in the target SIR due to transmission of only the
`CRC bits during non-existence of the transport channel data.
`0.015. In addition, even when the outer loop power con
`trol is applied to the gated transmission, in order to perform
`
`outer loop power control while gating a dedicated physical
`control channel during data communication where a dedi
`cated channel (DCH) is interlocked with a downlink shared
`channel (DSCH), it is necessary to measure the BER or
`BLER through CRC error detection. A detailed description
`of this will be made herein below.
`0016. Herein, a state where the downlink shared channel
`and the dedicated channel are established will be defined as
`a “DSCH/DCH state'. In the DSCH/DCH state, a UE in data
`communication should transmit/receive a downlink dedi
`cated channel Signal and an uplink dedicated channel Signal
`interlocked with the downlink shared channel, in order to
`maintain a proper channel State through power control for a
`waiting time. Continuously transmitting/receiving the
`downlink and uplink dedicated channel Signals in order to
`maintain the channels wastes battery power of the UE and
`increases interference to the downlink and the uplink, thus
`limiting the number of UEs that can share the downlink
`shared channel.
`0017. To solve this problem, the UMTS channel scheme
`performs DPCCH gating for efficient radio channel man
`agement by optionally reducing the number of Slot Signals
`(15 slots/frame) transmitted for every 10 ms-frame over the
`dedicated physical control channel in a State where the
`dedicated physical data channel has no information data
`(including CRC bits and tail bits). That is, since that the
`dedicated physical control channel is Subject to gating
`means that there is no user data transmitted over the dedi
`cated physical data channel, a length of the user data
`becomes zero (0). A start and end of the DPCCH (Dedicated
`Physical Control Channel) gating operation can be per
`formed through either a control message from an upper
`layer, i.e., a Layer 3, or a TFCI bit. As a result, it is possible
`to Secure efficient utilization of radio resources and reduce
`battery consumption by the UE, by reducing an amount of
`radio channel resources required in maintaining the dedi
`cated physical channel for the period where no user data is
`transmitted over the physical channel due to the DPCCH
`gating operation.
`0018. In the DPCCH gating mode, there is no user data
`(including CRC bits and tail bits), So data transmission over
`the dedicated physical data channel is Suspended. Therefore,
`a process for multiplexing the downlink or uplink dedicated
`physical data channel is not required. However, in order to
`perform outer loop power control even while performing the
`DPCCH gating, it is necessary to measure the BER or BLER
`through CRC error detection. Therefore, even though there
`is no user data to transmit during the DPCCH gating, the
`dedicated physical data channel including the CRC should
`be transmitted.
`0019 AS described above, in the gated transmission
`mode, only the CRC is repeatedly transmitted over the
`dedicated physical data channel, So combining occurs at the
`receiver, causing a decrease in the target SIR. As a result,
`when transmitting transport channel data after the end of the
`DPCCH gating, the BLER becomes high until the target SIR
`is recovered, because of the decrease in the target SIR due
`to the DPCCH gating, thus making it difficult to secure
`reliable Outer loop power control.
`0020 Specifically, a DPCH (Dedicated Physical Chan
`nel) multiplexing method performs rate matching using
`Equation (1) defined in the 3GPP (3" Generation Partner
`
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`ship Project) standard (see 3GPP TS25.212 V3.4.0: Multi
`plexing and Channel Coding).
`
`Zoi = 0
`(2. RMXN, X Ndata.
`
`n=1
`
`Equation (1)
`
`for all i = 1, ... , i
`AN. = Zion - Zi-li - Nii
`for all i = 1, ... , i
`
`0021) In Equation (1), N, for the uplink represents the
`number of bits included in one radio frame of ani" transport
`channel of a transport format combination (TFC) j before
`rate matching and for the downlink represents a multiple of
`/s, an intermediate parameter used in the rate matching
`process. Further, Nala represents the total number of bits
`filled in CCTrCH (Coded Composite Transport Channel)
`included in one radio frame of the transport format combi
`nation j, RM, represents a rate matching constant of an it
`transport channel, and Z, represents an intermediate rate
`matching parameter. In addition, for the uplink, AN, rep
`resents a final target value in rate matching. If the AN, is a
`positive number, it represents the number of bits repeated
`within one radio frame of the i' transport channel of the
`transport format combination j, and if the AN, is a negative
`number, it represents the number of punctured bits. How
`ever, for the downlink, the AN, is used as an intermediate
`parameter, a value of which is a multiple of /s, and 1
`represents the number of transport channels included in the
`CCTrCH.
`0022. In the uplink channel, since transmission data is
`Subject to rate matching after being Segmented in a radio
`frame unit, the number AN, of repeated or punctured bits of
`the radio frames is calculated in accordance with Equation
`(1) based on N, and Nala, and the rate matching is
`performed in the process disclosed in 3GPP TS25.212.
`0023. However, in the downlink channel, since the trans
`mission data is Subject to rate matching in a TTI unit before
`being Segmented in a radio frame unit, the rate matching is
`performed based on N' unlike in the uplink channel, and
`this method is disclosed in 3GPP TS25.212. The NT is a
`parameter used only in the downlink, and represents the
`number of bits included in one TTI for the case of a transport
`format 1 in the "transport channel before rate matching. In
`the case of the downlink channel, the positions of the
`transport channels in the radio frame can be either fixed
`regardless of the transport format combination or varied
`according to the transport format combination. The inter
`mediate parameters N, and AN, used in Equation (1) have
`a different calculation method and also have a different rate
`matching process according to circumstances. In the case of
`the downlink channel, since Nat does not depend on j, it
`is replaced with Naa.. in Equation (1).
`0024.
`In the downlink channel, if the transport channels
`have the fixed positions, N, does not depend upon j.
`
`Therefore, it is replaced with N. After N. is calculated in
`accordance with Equation (2) below, AN is calculated in
`accordance with Equation (1) using the values of N. and
`the Naa... From the calculated AN, a rate matching target
`value AN," is calculated in a TTI unit of a transport
`channel i with a transport format 1 by the process defined in
`3GPP TS25.212. If the AN," is a positive number, it
`represents the number of bits repeated in each TTI of the
`transport channel i with the transport format 1. However, if
`the AN," is a negative number, it represents the number
`of punctured bits.
`
`1
`N = fix (maxi-TFs(i) NF")
`
`Equation (2)
`
`0025 In Equation (2), F indicates the number of radio
`frames included in one TTI of the transport channel i, and
`TFS(i) indicates a set of a transport format index 1 for the
`transport channel i.
`0026. In the downlink channel, if the transport channels
`have variable positions according to the transport format
`combination, N, is calculated in accordance with Equation
`(3), and then, AN, is calculated in accordance with Equation
`(1) using the N and the Naa... The rate matching target
`value AN' is calculated in a TTI unit of the transport
`channel i with the transport format 1 based on the calculated
`AN, and the process defined in 3GPP TS25.212.
`
`1
`N = F. x NIFF
`
`Eduation (3
`quation (3)
`
`0027. In Equation (3), TFG) represents a transport format
`of the transport channel i for the transport format combina
`tion j.
`0028. Therefore, if channel coding is performing by
`transmitting only the CRC and/or the tail bit required in
`measuring the BER or BLER for outer loop power control
`in a State where there is no user data, the rate matching is
`performed in accordance with Equations (1) to (3) and the
`process defined in 3GPP TS25.212, thus the number of bits
`repeated in rate matching after channel coding is larger than
`when the transport channel data and the CRC are transmitted
`together. Therefore, when the user data is normally trans
`mitted over the dedicated physical data channel after the end
`of the DPCCH gating, the target SIR is set to a relatively low
`value due to the outer loop power control performed by
`transmitting only the CRC, so that it is not possible to
`efficiently perform the high-Speed power control at an initial
`power control Stage. This problem commonly occurs when
`performing the outer loop power control by transmitting
`only the CRC, regardless of whether the gating is applied.
`SUMMARY OF THE INVENTION
`0029. It is, therefore, an object of the present invention to
`provide an apparatus and method for multiplexing a dedi
`cated physical channel So as to perform reliable Outer loop
`power control in a CDMA communication System.
`0030. It is another object of the present invention to
`provided an apparatus and method for multiplexing a dedi
`
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`cated physical channel So as to perform accurate outer loop
`power control by transmitting a dedicated physical data
`channel according to a gating rate during gated-transmission
`of a dedicated physical control channel in a CDMA com
`munication System.
`0031. It is further another object of the present invention
`to provide a DPCH (Dedicated Physical Channel) multi
`plexing apparatus and method for performing Outer loop
`power control (OLPC) by accurately measuring an SIR in a
`gated transmission mode in a CDMA communication SyS
`tem.
`0032. It is yet another object of the present invention to
`provide a DPCH multiplexing apparatus and method for
`performing outer loop power control by transmitting a
`dummy bit along with CRC bits over a dedicated physical
`channel in a CDMA communication System.
`0033. It is still another object of the present invention to
`provide a DPCH multiplexing apparatus and method for
`performing outer loop power control by transmitting a
`proper number of dummy bits, determined based on a gating
`rate, along with CRC bits in a gated transmission mode in a
`CDMA communication system.
`0034) To achieve the above and other objects, there is
`provided an apparatus for transmitting a dedicated physical
`data channel Signal over a dedicated physical data channel in
`the absence of transmission data to be transmitted over the
`dedicated physical data channel in order to properly main
`tain a target SIR when there exists new transmission data
`after the absence of the transmission data in a CDMA mobile
`communication System. The apparatus includes a controller
`for generating a dummy bit generation request Signal in the
`absence of the transmission data; a dummy bit generator for
`generating a dummy bit Stream upon receipt of the dummy
`bit generation request signal; a CRC (Cyclic Redundancy
`Check) attachment part for attaching a CRC bit stream to the
`dummy bit stream; and a channel multiplexing part for
`mapping a first bit Stream created by attaching the CRC bit
`Stream to the dummy bit stream, to the dedicated physical
`data channel.
`0035) To achieve the above and other objects, the present
`invention also comprises a method for transmitting a dedi
`cated physical data channel Signal over a dedicated physical
`data channel in the absence of transmission data to be
`transmitted over the dedicated physical data channel in order
`to properly maintain a target SIR (Signal-to-Interference
`Ratio) when there exists new transmission data after the
`absence of the transmission data in a CDMA (Code Division
`Multiple Access) mobile communication System. The
`method comprises generating a dummy bit generation
`request Signal in the absence of the transmission data; and
`upon receipt of the dummy bit generation request Signal,
`generating a dummy bit Stream, and transmitting a dedicated
`physical data channel Signal created by attaching the CRC
`bit stream to the dummy bit stream.
`BRIEF DESCRIPTION OF THE DRAWINGS
`0.036 The above and other objects, features and advan
`tages of the present invention will become more apparent
`from the following detailed description when taken in con
`junction with the accompanying drawings in which:
`0037 FIG. 1 illustrates a structure of a downlink dedi
`cated physical channel in a general mobile communication
`System;
`
`0038 FIG. 2 illustrates a structure of an uplink dedicated
`physical channel in a general mobile communication SyS
`tem,
`0039 FIG. 3 illustrates a method for multiplexing an
`uplink dedicated physical channel for Outer loop power
`control in a W-CDMA communication system according to
`an embodiment of the present invention;
`0040 FIG. 4 illustrates a method for multiplexing a
`downlink dedicated physical channel for Outer loop power
`control in a W-CDMA communication system according to
`an embodiment of the present invention;
`0041
`FIG. 5 illustrates a structure of a physical down
`link shared channel in a mobile communication System;
`0042 FIG. 6 illustrates process for channel-coding an
`uplink channel having performance of 12.2 KbpS used in a
`W-CDMA communication system according to an embodi
`ment of the present invention;
`0043 FIG. 7 illustrates a modified uplink channel of
`FIG. 6 for /, DPCCH gating:
`0044 FIG. 8 illustrates a modified uplink channel of
`FIG. 6 for /S DPCCH gating;
`004.5 FIG. 9 illustrates a structure of a downlink channel
`having performance of 12.2 Kbps used in a W-CDMA
`communication System according to an embodiment of the
`present invention;
`0046 FIG. 10 illustrates a modified downlink channel of
`FIG. 9 for /, DPCCH gating:
`0047 FIG. 11 illustrates a modified downlink channel of
`FIG. 9 for /s DPCCH gating:
`0048 FIG. 12 illustrates a process for multiplexing the
`dedicated physical channel according to an embodiment of
`the present invention; and
`0049 FIG. 13 illustrates an apparatus for multiplexing a
`dedicated physical channel according to an embodiment of
`the present invention.
`
`DETAILED DESCRIPTION OF THE
`PREFERRED EMBODIMENT
`0050 A preferred embodiment of the present invention
`will be described herein below with reference to the accom
`panying drawings. In the following description