WO2006030491A1 - Dispositif de station de base, procédé de signalisation et procédé de sélection de canal de systeme de communication - Google Patents

Dispositif de station de base, procédé de signalisation et procédé de sélection de canal de systeme de communication Download PDF

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Publication number
WO2006030491A1
WO2006030491A1 PCT/JP2004/013369 JP2004013369W WO2006030491A1 WO 2006030491 A1 WO2006030491 A1 WO 2006030491A1 JP 2004013369 W JP2004013369 W JP 2004013369W WO 2006030491 A1 WO2006030491 A1 WO 2006030491A1
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WO
WIPO (PCT)
Prior art keywords
command
ack
transmission rate
base station
nack
Prior art date
Application number
PCT/JP2004/013369
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English (en)
Japanese (ja)
Inventor
Noriyuki Fukui
Hideji Wakabayashi
Original Assignee
Mitsubishi Denki Kabushiki Kaisha
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Denki Kabushiki Kaisha filed Critical Mitsubishi Denki Kabushiki Kaisha
Priority to PCT/JP2004/013369 priority Critical patent/WO2006030491A1/fr
Publication of WO2006030491A1 publication Critical patent/WO2006030491A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • H04L1/0019—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy in which mode-switching is based on a statistical approach
    • H04L1/002—Algorithms with memory of the previous states, e.g. Markovian models
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0025—Transmission of mode-switching indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H04L1/1671—Details of the supervisory signal the supervisory signal being transmitted together with control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate

Definitions

  • the present invention relates to a signaling method in a communication system, and in particular, has a function of instructing an increase (up) and a decrease (down) in data transmission speed and correctly receives transmission data.
  • the present invention relates to a signaling method and a channel selection method that are applied to a base station apparatus having a function of notifying a communication partner of power / power failure and a communication system including the base station apparatus.
  • 3GPP 3rd Generation Partnership Project
  • FDD Frequency Division D UPlex
  • Enhanced Uplink for the purpose of increasing the average transmission rate in the uplink (terminal ⁇ base station) and expanding the service coverage area (coverage) of the base station Standardization of technology is under consideration.
  • This technology is described in “Node B Controlled Rate Scheduling (Section 7. 1. 1. 3, Section 7. 1. 1. 5)” of “3GPP TR25. 896 V6. This technology is described below.
  • Node B Controlled Rate Scheduling is a base station that raises and lowers the “UE (User Equipment) pointerj indicating the maximum data transmission rate that can be used by the terminal.
  • UE User Equipment
  • a table called “Transport Format Combination” is prepared, and the terminal can transmit up to the transmission rate set by this “UE pointer”.
  • the terminal when a higher transmission rate is requested on the terminal side, the terminal performs signaling (request) to the base station (refer to “7. 1.1.5 RR”). .
  • the base station In order to allow the request and indicate UP (see “7. 1. 1. 5 section RG”), do not allow it, or instruct nothing, or give priority to the transmission of other terminals. Conversely, DOW N is indicated.
  • the UPZDOWN instruction is not limited to when the terminal requests “UE pointer” up.
  • the base station may unidirectionally instruct the terminal to UPZ DOWN by increasing or decreasing the total received signal level from the plurality of other terminals at the target base station.
  • Non-Patent Document 1 3GPP TR25. 896 V6.0.0, Section 7.1.1.3, Section 7.1.1.3, Section 7.2.3 Disclosure of Invention
  • the transmission data is modulated using the orthogonal code, and the receiving station receives the desired data without being interfered with the transmission data transmitted from other transmitting stations based on the same orthogonal code used by the transmitting station. Can be demodulated.
  • a new code is assigned to this radio channel. This leads to the possibility of being assigned.
  • a new code is used for a channel equipped with an UPZDOWN instruction for transmission speed or a channel equipped with ACKZNACK, in addition to the code used for the wireless channel already defined in the existing standard. As a result, there is a problem that the number of terminals accommodated in the same radio section is further limited.
  • the present invention has been made in view of the above, and efficiently notifies both of transmission rate UPZDOWN and ACK ZNACK with a predetermined number of bits prepared for signaling of these data. It is an object of the present invention to provide a base station apparatus and a signaling method that can perform communication.
  • the base station apparatus receives a transmission data transmitted from the terminal apparatus and indicates a successful reception Z failure, respectively.
  • the base station apparatus comprising: a command generation unit that generates (ACKZNACK); and a modulation unit that generates a modulation signal to be returned to the terminal device based on a signal generated by the command generation unit.
  • a command is generated by superimposing a data transmission rate instruction command (UP / DOWN / KEEP) indicating an increase in transmission rate, a decrease in Z, and a maintenance of Z on the terminal device, on the retransmission control reply command.
  • UP / DOWN / KEEP data transmission rate instruction command
  • the transmission speed UPZDOWNZKEEP shall be the same as the channel used to explicitly notify the maximum transmission rate as channel assignment, or one-to-one correspondence with the channel assignment channel.
  • the channel for performing ACKZNACK signaling is the same as the channel used for explicitly notifying the maximum transmission rate as channel allocation, or the channel corresponding to the channel allocation channel on a one-to-one basis.
  • the transmission rate UPZDOWN (additional transmission rate " ⁇ "is added) and ACKZNACK are mounted on the same channel, and the number of bits prepared for the signaling of these data It provides a mechanism (means and method) for efficiently and simultaneously reporting both UPZDOWNZKEEP and ACKZNACK from the base station to the terminal.
  • the data transmission rate instruction command (u) (u)
  • FIG. 1 is a block diagram showing a functional configuration of a communication system according to the present invention.
  • FIG. 2 is a sequence diagram showing signaling that is relevant to the prior art.
  • FIG. 3 is a sequence diagram showing signaling according to the present invention.
  • FIG. 4 is a chart showing an example of bit patterns of six types of commands including three types of data transmission rate instruction commands, two types of reply commands for retransmission control, and power.
  • FIG. 5 is a chart showing an example of bit pattern allocation in which priority is given to reducing the false detection probability of ACKZNACK.
  • FIG. 6 is a chart showing an example of bit pattern allocation prioritizing reducing the false detection probability of transmission speed up Z down Z keep.
  • FIG. 7 is a chart showing the distance between the ACK group and the NACK group in the bit pattern allocation shown in FIG.
  • FIG. 8 is a diagram showing an example of signal arrangement in which the six types of commands (ACK, ACK & DOWN, ACK & UP, NACK, NACK & DOWN, and NACK & UP) shown in FIG. 4 are arranged based only on phase information.
  • Fig. 9 is a diagram showing an example of signal arrangement in which the six types of commands shown in Fig. 8 (ACK, ACK & DOWN, ACK & UP, NACK, NACK & DOWN, NACK & UP) are arranged based on phase information and amplitude information. is there.
  • FIG. 10 is a diagram showing an example of signal arrangement in which priority is given to reducing the false detection probability of transmission speed up Z down Z keep.
  • FIG. 11 shows the six types of commands shown in FIG. 10 (ACK, ACK & DOWN, ACK & UP, NACK, NACK & DOWN, NACK & UP) based on phase information and amplitude information.
  • FIG. 12 shows another signal arrangement different from that shown in FIG. 8 to FIG. 11, and is used to explain the technique using 6 signal points of 8-phase PSK.
  • FIG. 12 shows another signal arrangement different from that shown in FIG. 8 to FIG. 11, and is used to explain the technique using 6 signal points of 8-phase PSK.
  • FIG. 13 is a diagram showing an example of a signal arrangement representing only four types of commands (ACK & UP, ACK & DOWN, NACK & UP, NACK & DOWN).
  • FIG. 14 is a diagram showing an example of a sequence for performing transmission rate maintenance signaling for one command category having the four types of commands shown in FIG. 13 as a set.
  • FIG. 15 is a diagram showing how transmission rate UPZDOWNZKEEP signaling is performed on the same channel as the channel used to explicitly notify the maximum transmission rate when allocating channels! is there.
  • FIG. 16 shows transmission rate up Z down Z maintenance signaling performed on a channel corresponding to the channel used to explicitly notify the maximum transmission rate at the time of channel assignment. It is a figure which shows a mode.
  • FIG. 17 is a chart showing an example of a correspondence relationship between channels that perform channel assignment and channels that perform UPZDOWNZKEEP signaling of a transmission rate.
  • FIG. 1 is a block diagram showing a functional configuration of a communication system according to the present invention, for explaining communication performed between a base station apparatus and a terminal apparatus constituting the mobile communication system. It is shown as an example.
  • a demodulator 21 on the base station side, a demodulator 21, a data receiver 22, a command generator 23, a total received signal level state manager 24, and a modulator 25 are provided.
  • the terminal side includes a demodulator 14, a retransmission determination & rate controller 15, a transmission data storage 11, a data generator 12, and a modulator 13.
  • the transmission data storage unit 11 of the terminal holds data to be transmitted!
  • the data generation unit 12 determines data transmission based on the presence / absence of data in the transmission data storage unit 11.
  • the data transmitted from the data generation unit 12 to the modulation unit 13 is modulated by the modulation unit 13 and transmitted to the base station side.
  • the demodulator 21 of the base station demodulates the transmission signal transmitted from the terminal side and outputs data.
  • the demodulated data is subjected to error correction and error check by the data receiving unit 22, and the result is notified to the command generating unit 23.
  • Total received signal level status management unit 24 monitors the received level of signals transmitted from other terminals, and the monitoring results Is sent to the command generator 23.
  • the command generator 23 determines whether or not it is necessary (or possible) to increase or decrease the transmission speed of the target terminal based on the received signal level, and succeeds in receiving data based on the error check result of the received data. It is determined whether or not to generate an ACKZNACK! Or deviation command indicating failure, respectively, and based on these determination results, the generated command (bit arrangement) is transmitted to the modulation unit 25.
  • the modulation unit 25 modulates the transmitted command using an orthogonal code, and transmits the modulated command to the terminal.
  • the demodulation section 14 of the terminal performs demodulation processing using the same code as the orthogonal code used in the base station.
  • the retransmission determination & rate control unit 15 performs ACKZNACK reception determination and transmission rate change instruction determination. When a NACK is received, the retransmission generation & rate control unit 15 instructs the data generation unit 12 to perform retransmission processing and also transmits a transmission rate change instruction. If so, indicate that.
  • FIG. 2 is a sequence diagram showing signaling related to the prior art, and shows an example of a sequence for separately transmitting ACKZNACK and Rate UPZDOWN.
  • FIG. 3 is a sequence diagram showing signaling according to the present invention, in which an ACK / NACK and a data transmission rate (Rate) UPZDOWN are transmitted simultaneously, in other words, ACKZNACK is combined with a data transmission rate UPZDOWN.
  • Rate data transmission rate
  • the terminal transmits traffic data to the base station (step S201, step S204), and the base station returns a response command ACKZNACK for receiving the traffic data transmitted from the terminal (step S202, step S204). S205).
  • the base station transmits a command instructing UPZDOWN of the data transmission rate, which is a command independent of these response commands, to the terminal (step S203). Note that the execution timing of the ACKZNACK command and the command that indicates UPZDOWN of the data transmission rate are different.
  • the ACKZNACK command is triggered by the reception of traffic data, but the command that indicates UPZDOWN of the data transmission rate is triggered by an increase or decrease in the received signal level from multiple terminals at the base station in response to a request from the terminal. Gaka You can On the other hand, timing of data transmission rate UPZDOWN instruction and ACKZNACK sirend may coincide.
  • the terminal transmits traffic data to the base station (step S301, step S303), and the base station returns a response command A CK / NACK to the reception result of the traffic data transmitted from the terminal (step S302). , Step S304).
  • the data transmission speed UPZDOWN command is added to the ACKZNACK command.
  • the base station must always return ACKZ NACK, which is signaling that always occurs.
  • the present invention relates to the A
  • a major feature is that the UPZDOWN command of the data transmission rate is carried on the signaling channel of the CKZNACK command.
  • ACK & KEEP (corresponding to conventional ACK, hereinafter referred to as “ACK”)
  • ACK & UP (corresponding to conventional ACK, hereinafter referred to as “ACK”)
  • NACK & KEEP (corresponding to conventional NACK, hereinafter referred to as “NACK”)
  • NACK & UP (corresponding to conventional ACK, hereinafter referred to as “NACK”)
  • NACK & UP (corresponding to conventional NACK, hereinafter referred to as “NACK”)
  • NACK & UP (corresponding to conventional NACK, hereinafter referred to as “NACK”)
  • NACK & UP (corresponding to conventional NACK, hereinafter referred to as “NACK”)
  • NACK & UP (corresponding to conventional NACK, hereinafter referred to as “NACK”)
  • NACK & UP (corresponding to conventional NACK, hereinafter referred to as “NACK”)
  • NACK & UP (corresponding to conventional NACK, hereinafter referred to as “N
  • FIG. 4 is a chart showing an example of the above six types of commands.
  • ACK is “1111”
  • NACK is “0000”
  • ACK & UP is “1100”
  • ACK & DOWN is “1101”
  • NACK & UP is “0011”
  • NACK & DOWN is “0010”.
  • the terminal that is the receiving station only monitors one channel. Since CK information and transmission rate instruction information can be obtained, it is possible to suppress an increase in device scale and an increase in reception processing amount. Furthermore, since different bits are not allocated to ACKZNACK information and transmission rate instruction information, the number of bits required for signaling can be reduced. Note that FIG. 4 is not limited to the power of 4 bits, which is an example of using a 4-bit bit pattern for the above-described signaling. In addition, at the time of filing of the present invention, 3GPP determines the number of bits for each command of the retransmission control reply command (ACKZNACK) and the transmission rate instruction command (UP / DOWN / KEEP).
  • FIG. 5 is a chart showing an example of bit pattern allocation giving priority to reducing the false detection probability of ACKZNACK.
  • the hamming distance is allocated as much as possible between the ACK group and the NACK group.
  • the Hamming distance between the ACK command and the NACK, NACK & UP and NACK & DOWN commands is 4, 3, and 3, and the average is 3.3.
  • the Hamming distance between the ACK & DOWN command and the NACK, NACK & UP and NACK & DOWN commands is 3, 4, 2 and the average is 3.0.
  • the Hamming distance between the ACK & UP command and the NACK, NACK & UP and NACK & DOWN commands is 3, 2, 4 and the average is 3.0.
  • the hamming distance between UP and DOWN between different groups of the ACK group and the NACK group is increased.
  • the hamming distance between the UP of one group and the DOWN of another group and the hamming distance between the DO WN of one group and the UP of another group are increased.
  • NACK & DOWN and NACK & UP are set to patterns of "0001" and "0010" respectively, so that the distance between ACK & DOWN and NACK & UP, the distance between ACK & UP and NACK & DOWN, and the distance between ACK & UP and NACK & DOWN So that the distance is long (4 each) Yes.
  • NACK & DOWN and NACK & UP are bit patterns of "0010" and "0001", respectively.
  • the hamming distance force is 2, and the distance between ACK & DOWN and NACK & UP, and ACK & UP and NACK & DOWN is short (2 each), and it is easy to mistake UP and DOWN between different groups of ACK and NACK.
  • NACK & D OWN and NACK & UP are bit patterns of “0001” and “0010”, respectively.
  • FIG. 6 is a chart showing an example of bit pattern allocation in which priority is given to reducing the false detection probability of transmission rate up Z down Z keep.
  • ACK and NACK are required to obtain maximum ming distance (hamming distance between ACK and NACK is 4).
  • the mutual Hamming distance between ACK, ACK & UP, and ACK & DOWN is 2 or more (2 for 4 bits).
  • FIG. 7 is a chart showing the Hamming distance between the ACK group and the NACK group for the bit pattern allocation shown in FIG. As is clear from the chart shown in FIG. 7, in the case shown in FIG. 6, as in the case of FIG. 5, the Hamming distance between UP and DOWN is increased between different groups of ACK and NACK. Is arranged. This arrangement effectively reduces the probability of mistaken UP and DOWN between different groups.
  • bit allocation uses the same idea as above even when the number of bits given to each command of UPZDOWN and ACKZ NACK is different. By applying, a desired bit pattern can be determined.
  • FIG. 8 shows an example of signal arrangement in which the six types of commands (ACK, ACK & DOWN, ACK & UP, NACK, NACK & DOWN, NACK & UP) shown in FIG. 4 are arranged on the amplitude phase plane based only on the phase information.
  • FIG. 8 In the arrangement example shown in Fig. 8, all signal points exist on the same circle, and the signal points of the ACK group and the NACK group are spaced apart. In general, the signal point at the receiving station deviates from its normal position due to the influence of noise, etc. In the arrangement example shown in Fig. 8, the signal point is separated between the ACK group and the NACK group! / The probability of false detection from ACK to NACK or NACK to ACK is reduced. Note that the modulation unit 25 of the base station shown in FIG. 1 generates and outputs modulated signals based on these signal arrangements.
  • the straight line drawn in the second quadrant force to the fourth quadrant as shown in FIG. 8 is used as a determination boundary, and ACKZNA CK is based on this determination boundary. Judgment is made.
  • up Z down Z keep judgment for example, when ACK group is taken as an example, it has judgment boundary at 30 degree and 60 degree, phase 315 degree (-45 degree: 8 0 ⁇ 7 NACK judgment boundary) 30 degrees from 30 degrees, 60 degrees from 30 degrees, and signals from 60 degrees to 135 degrees (ACKZNACK judgment boundary) are judged as up, keep and down, respectively.
  • one symbol may be embedded in an existing channel defined by 3GPP (eg DPCC H: Dedicted Physical Control Channel).
  • DPCC H Dedicted Physical Control Channel
  • the channel that is simultaneously monitored by the terminal that is the receiving station Since the number can be further reduced, it is possible to suppress an increase in device scale and an increase in reception processing amount.
  • FIG. 9 is a diagram showing an example of signal arrangement based on the phase information and amplitude information of the six types of commands (ACK, ACK & DOWN, ACK & UP, NACK, NACK & DOWN, NACK & UP) shown in FIG.
  • the determination is based on the criteria that ACK & DOWN is in the first quadrant, ACK & UP is in the second quadrant, NACK & UP is in the third quadrant, and NACK & DOWN is in the fourth quadrant.
  • those having an amplitude value larger than the predetermined amplitude value are judged as ACK or NACK.
  • This method is frequently used even in existing wireless systems! It is the same as QPSK and mapping of the modulation method, so that existing functions can be used and the equipment scale can be simplified. Have advantages.
  • the hamming distance between UP and DO WN is increased between different groups of ACK and NACK.
  • ACK & DOWN and NACK & UP, and ACK & UP and NACK & DOWN are point-symmetric with respect to the origin. This arrangement can effectively reduce the probability of mistaken UP and DOWN between different groups.
  • FIG. 10 is a diagram illustrating an example of signal arrangement in which priority is given to reducing the false detection probability of transmission speed up Z down Z keep.
  • the signal point distance between ACK and ACK & UP or ACK and A CK & DOWN is wider than in Fig.8. Since the signal point distance is extended, it is more resistant to noise and the false detection probability of up-Z-down-Z keep can be reduced.
  • the determination of ACKZNACK is the same as in FIG. 8, and can be performed at the determination boundary provided in the second quadrant and the fourth quadrant.
  • a boundary may be provided at a predetermined phase angle as in FIG.
  • FIG. 11 by using the same signal arrangement as in FIG. 9, a signal having an amplitude value larger than a predetermined amplitude value may be determined as ACK or NACK.
  • the arrangement is such that the distance between UP and DOWN is long between different groups of the ACK group and the NACK group. That is, A CK & DOWN and NACK & UP, and ACK & UP and NACK & DOWN are point-symmetric with respect to the origin. This arrangement can effectively reduce the probability of mistaken UP and DOWN between different groups.
  • FIG. 12 shows another signal arrangement different from the signal arrangement shown in FIGS. 8 to 11, and is used to explain a technique of using six signal points of 8-phase PSK signal points.
  • 8-phase PSK can also determine the two threshold forces indicated by the I-axis, Q-axis, and parallel lines parallel to the I-axis.
  • This figure shows a 3-bit bit arrangement. The first bit from the left can be determined from the vertical position with respect to the I axis, and the second bit from the left force is based on the Q axis. The determination can be made based on the left and right positions. Furthermore, the 3rd bit of the left force can be determined by the vertical position with respect to the threshold. In all of these determinations, it is not necessary to obtain the angle, so that the signal position can be easily determined.
  • ACKZNACK is assigned to the first bit
  • second and third bits "10" is UP
  • "00” is DOWN
  • 11" and "01” Can be assigned to KEEP.
  • signal points can be determined using only the I axis, Q axis, and two threshold axes without using angle information, so that the configuration of the receiver can be realized easily.
  • FIG. 13 is a diagram showing an example of a signal arrangement expressing only four types of commands (ACK & UP ⁇ ACK & DOWN ⁇ NACK & UP ⁇ NACK & DOWN). As shown in the figure, ACK & UP is placed in the first quadrant, NACK & UP in the second quadrant, NACK & DOWN in the third quadrant, and ACK & DOWN in the fourth quadrant. Signaling only these four commands is exactly the same as QPSK modulation mapping, and has the advantage that the existing functions can be used and the device scale can be simplified.
  • FIG. 14 is a diagram showing an example of a sequence for performing transmission rate maintenance signaling using a command category including the four types of commands shown in FIG.
  • the terminal V transmits traffic data to the base station at the data transmission rate N (step S401), and the base station transmits data to the response command NACK for the reception result of the traffic data transmitted from the terminal.
  • Reply with speed DOWN command step S402.
  • the terminal transmits traffic data to the base station at the data transmission rate N-1 (step S403), and the base station adds a data transmission rate UP command to the response command ACK to the reception result of the traffic data transmitted from the terminal.
  • Click to reply step S404.
  • the terminal transmits traffic data at the data transmission rate N to the base station (step S405).
  • step S401 to step S405 signaling is performed once each for increasing and decreasing the data transmission rate, and the data transmission rate is maintained.
  • This signaling method allows the transmission rate used by the terminal to rise and fall instantaneously.
  • the data transmission rate up command is executed later. If the up command is executed first, there is a possibility that the reception level will rise undesirably as a base station. In other words, the amount of interference with other channels is increased. In order to prevent this phenomenon, the target terminal can be used with two commands that do not give large interference to other channels, as shown in Fig. 14. Data transmission speed keep instruction can be realized.
  • the common channel is a channel for notifying all terminals of common information, or for sharing information with multiple terminals and adding a destination when necessary to notify information to a specific terminal.
  • the dedicated channel is a channel used exclusively for a specific terminal.
  • the transmission rate UPZDOWN and ACKZNACK signaling that have been described so far according to the present invention are not limited to the types of common channels and individual channels. It may be used.
  • FIG. 15 is a diagram illustrating a state in which the transmission rate UPZDOWNZKEEP signaling is performed on the same channel as the channel used to explicitly notify the maximum transmission rate at the time of channel assignment.
  • the terminal monitors a plurality of downlink channels (eg, Al, A2) in order to have a predetermined channel assigned. For example, the channel assignment is transmitted to the target terminal at a certain timing (step S501). In this step, when the terminal uses the uplink channel, the maximum transmission rate allowed is explicitly notified.
  • a plurality of downlink channels eg, Al, A2
  • the target terminal to which the predetermined channel is assigned transmits the traffic data using, for example, the uplink channel B1 (step S502, step S503).
  • the base station may signal UPZDOWNZKEEP of the transmission rate to the terminal during communication (step S504).
  • the channel used for the channel allocation is the same channel ( In the example of Fig. 15, channel A1) can be allocated. This By making the channel the same, the number of required orthogonal codes can be reduced.
  • the number of channels for monitoring UPZDO WNZKEEP instructions can be limited, and the scale of the device and the amount of reception processing can be reduced.
  • FIG. 16 is a diagram showing how the transmission rate up, down, and Z maintenance signaling is performed on the channel corresponding to the channel used to explicitly notify the maximum transmission rate at the time of channel assignment.
  • FIG. 17 is a chart showing channels for channel assignment and transmission. Only the differences from FIG. 15 in the operation shown in FIG. 6 are described (step S604).
  • the correspondence between channel A1 and channel C1 is, for example, the force that also specifies the force such as a predetermined rule. These are given by the terminal as a correspondence table as shown in FIG.
  • the channel number may be specified from a calculation formula. As described above, when a channel corresponding to one-to-one is used, it is possible to limit the channel for the terminal to monitor the UPZDOWNZKEEP instruction, and to reduce the device scale and the reception processing amount.
  • the data transmission rate UPZDOWN (in addition to these, the data transmission rate KEEP "KEEP” is added) and ACKZNACK are transmitted on the same channel. Equipped with a mechanism to efficiently notify both UPZDOWNZKEEP and ACKZNAC ⁇ simultaneously from the transmitting station (for example, base station) to the receiving station (for example, terminal) using the number of bits prepared for the signaling of these data. Method).
  • ACK is transmitted.
  • a bit array that increases the hamming distance between the group indicating NACK and the group indicating NACK it is possible to obtain a bit array that prioritizes reducing the false detection probability of ACKZNACK transmission.
  • the erroneous detection of the data transmission rate UPZDOWNZKEEP has a greater influence on other communications as interference than the erroneous detection of ACKZNAC ⁇ .
  • Reduce the probability of false detection of data transmission rate UPZDOWNZKEEP by allocating a bit arrangement that increases the hamming distance between data transmission rates UPZDOWNZKEEP in each of ACK group and NACK group Can be a bit array that prioritizes.
  • the ACK is assigned by assigning a bit array so that the data distance between the data transmission speed UP and the data transmission speed DOWN becomes long. It is possible to reduce the false detection probability between different groups of the indicated group and the group indicating NACK.
  • CK can be expressed by one symbol.
  • the priority is given to reducing the false detection of ACKZNACK over the erroneous detection of UPZDOW NZKEEP of the data transmission rate. It is also possible to use a grid array. On the other hand, it is a bit array that prioritizes reducing the false detection of UPZDOWNZKEEP of the data transmission speed over the false detection of ACKZNACK.
  • the distance between the data transmission rate UP and the data transmission rate DOWN is increased between different groups of the ACK indicating group and the NACK indicating group. In addition, it is possible to reduce the mutual false detection probability
  • the data transmission rate UPZDOWNZKEEP and ACKZNACK can be expressed using the signal points of 8-phase PSK, and the signal position Determination can be performed easily.
  • the base station apparatus and signaling method according to the present invention only the data transmission rate UPZDOWN and ACKZNACK are notified by one signaling, and the data transmission rate KEEP is the sum of the data transmission rates UP and DOWN. Since it is expressed by signaling twice, the device scale can be simplified.
  • the data transmission rate KEEP when the data transmission rate KEEP is expressed by the above two times of signaling, the data transmission rate DO WN is first indicated, and then Since the data transmission speed UP is instructed, it does not cause any significant interference to other channels. Therefore, even if the apparatus scale is simplified, the function is not impaired.
  • the channel that performs UPZDOWNZK EEP signaling of the transmission rate is, for example, a channel that is used to explicitly notify the maximum transmission rate as channel assignment. Since they are the same, the number of required orthogonal codes can be reduced. Further, since the terminal can limit the channels for monitoring the transmission rate UPZDOWNZ KEEP instruction, it is possible to simplify the control process and reduce the scale of the terminal nodeware. Furthermore, by using a channel that corresponds to the channel used for channel assignment as a one-to-one correspondence for ACKZNACK signaling, at least the terminal can monitor the channel for UPZDOWNZKEEP indication of the transmission rate, and the device scale and reception processing amount can be limited. Can be reduced. [0070] Also, according to the channel selection method according to the present invention, the channel for performing ACKZNACK signaling is the same as the channel used to explicitly notify the maximum transmission rate as channel assignment. Can reduce the number of orthogonal codes
  • the channel over which the terminal monitors ACKZNACK can be limited, control processing can be simplified, the terminal can be reduced, and the scale of software can be reduced. Furthermore, by using a channel that corresponds to the channel used for channel allocation on a one-to-one basis as A CKZNACK signaling, at least the channels that the terminal monitors for ACKZNACK can be limited, and the device scale and the amount of reception processing can be reduced. .
  • the base station apparatus, the signaling method, and the channel selection method according to the present invention are useful as a communication system or a communication method that realizes efficient data transmission. Suitable for communication systems.

Abstract

Moyens (procédé) de signalisation dans un système de communication selon lequel les informations relatives à la fois à l’augmentation/réduction de la vitesse de transmission et à l’accusé de réception positif/négatif de la transmission sont fournies de façon efficace à un nombre de bits prédéterminé préparé pour la signalisation de ces données. Un dispositif de station de base comprend une unité émettrice de commande destinée à recevoir des données envoyées depuis un dispositif terminal, pour émettre une commande de réponse au contrôle de renvoi (ACK/NACK) indiquant la réussite/l’échec de la réponse et une unité de modulation destinée à produire un signal de modulation auquel répond le dispositif terminal, sur la base du signal émis par l’unité émettrice de commande. L’unité émettrice de commande émet une commande selon laquelle une commande indiquant la vitesse de transmission de données (UP/DOWN/KEEP) indiquant que l’augmentation/la réduction/le maintien de la vitesse de transmission autorisés par le dispositif terminal sont superposés à la commande de réponse au contrôle de renvoi.
PCT/JP2004/013369 2004-09-14 2004-09-14 Dispositif de station de base, procédé de signalisation et procédé de sélection de canal de systeme de communication WO2006030491A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010525709A (ja) * 2007-04-30 2010-07-22 ノキア シーメンス ネットワークス オサケユヒティエ コミュニケーションシステムにおけるデータ変調

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5429510A (en) * 1977-08-08 1979-03-05 Nec Corp Data communication system
JP2003521138A (ja) * 1999-07-09 2003-07-08 マリブ ネットワークス インク． Ｔｃｐ／ｉｐパケット中心型無線送信システムアーキテクチャ
JP2004187247A (ja) * 2002-10-08 2004-07-02 Matsushita Electric Ind Co Ltd 基地局装置及び通信端末装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5429510A (en) * 1977-08-08 1979-03-05 Nec Corp Data communication system
JP2003521138A (ja) * 1999-07-09 2003-07-08 マリブ ネットワークス インク． Ｔｃｐ／ｉｐパケット中心型無線送信システムアーキテクチャ
JP2004187247A (ja) * 2002-10-08 2004-07-02 Matsushita Electric Ind Co Ltd 基地局装置及び通信端末装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010525709A (ja) * 2007-04-30 2010-07-22 ノキア シーメンス ネットワークス オサケユヒティエ コミュニケーションシステムにおけるデータ変調
US8374073B2 (en) 2007-04-30 2013-02-12 Nokia Siemens Networks Oy Data modulation in a communication system

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