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US20100157836A1 - Mobile communication system, base station apparatus, and mobile station apparatus - Google Patents

Mobile communication system, base station apparatus, and mobile station apparatus Download PDF

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Publication number
US20100157836A1
US20100157836A1 US12/667,833 US66783308A US2010157836A1 US 20100157836 A1 US20100157836 A1 US 20100157836A1 US 66783308 A US66783308 A US 66783308A US 2010157836 A1 US2010157836 A1 US 2010157836A1
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US
United States
Prior art keywords
station apparatus
base station
reception quality
uplink data
quality information
Prior art date
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Abandoned
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US12/667,833
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English (en)
Inventor
Tatsushi Aiba
Shohei Yamada
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Sharp Corp
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Sharp Corp
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Assigned to SHARP KABUSHIKI KAISHA reassignment SHARP KABUSHIKI KAISHA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: AIBA, TATSUSHI, YAMADA, SHOHEI
Publication of US20100157836A1 publication Critical patent/US20100157836A1/en
Abandoned legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • 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
    • H04L1/0001—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
    • H04L1/0026—Transmission of channel quality 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
    • H04L1/0001—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
    • H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
    • 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
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0055—MAP-decoding
    • 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
    • H04L1/1664—Details of the supervisory signal the supervisory signal being transmitted together with payload signals; piggybacking
    • 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
    • H04L1/1685—Details of the supervisory signal the supervisory signal being transmitted in response to a specific request, e.g. to a polling signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/04—Error control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality

Definitions

  • the present invention relates to a mobile communication system in which a mobile station apparatus measures reception quality of signals received from a base station apparatus and transmits, to the base station apparatus, reception quality information while the base station apparatus allocates resources based on the reception quality information received from the mobile station apparatus, and relates to a base station apparatus and a mobile station apparatus which are applied to the mobile communication system.
  • the OFDMA relates to a modulation method used for all cells within a communication area composed of cells to communicate with each other using the same frequency, and can realize faster data communication.
  • CQI channel quality indicator
  • a technique is also well-known in which for transmission packet scheduling in an orthogonal frequency division multiplexing (OFDM) system that utilizes a plurality of sub-carriers, mobile station apparatuses evaluate each channel states of a downlink (frequency characteristics, i.e., frequency-dependent characteristics of transmission losses) and transmit, to the base station apparatus, information obtained by quantizing each channel states, while the base station apparatus determines sub-carriers to be allocated for each mobile station apparatuses based on the transmitted information (Patent document 1).
  • OFDM orthogonal frequency division multiplexing
  • FIG. 14 illustrates a communication method of the prior art between a base station apparatus and a mobile station apparatus. Having received downlink information of a downlink used for reception quality measurement from the base station apparatus, the mobile station apparatus measures reception quality of each channel based on the downlink information to create a channel profile of a propagation path.
  • the channel profile created by the mobile station apparatus is transmitted, from the mobile station apparatus to the base station apparatus, as reception quality information by using an uplink. Based on the reception quality information, the base station apparatus performs adaptive modulation and coding or frequency selective scheduling for signals to be transmitted from the base station apparatus to the mobile station apparatus.
  • reception quality information As for transmission of the reception quality information to the base station apparatus by the mobile station apparatus, in Evolved Universal Terrestrial Radio Access studied under the third Generation Partnership Project (3GPP) which is international standardization project, it is studying that the reception quality information is transmitted by using a dedicated uplink control channel (Physical Uplink Control Channel, hereinafter referred to as “PUCCH”). And it is studying that an uplink data and the reception quality information are simultaneously transmitted by using an uplink data channel (Physical Uplink Shared Channel, hereinafter referred to as “PUSCH”).
  • PUCCH Physical Uplink Control Channel
  • PUSCH Physical Uplink Shared Channel
  • Non-Patent document 1 there is proposed a method to transmit, in transmitting the reception quality information from the mobile station apparatus to the base station apparatus, the reception quality information by using the PUCCH or the PUSCH depending on a kind of services different in required the reception quality information.
  • Non-Patent document 1 “CQI handling during DRX”, 3GPP, TSG RAN WG2 Meeting #58, R2-071901, May, 2007
  • mapping of respective information in simultaneously transmitting the uplink data and the reception quality information from the mobile station apparatus to the base station apparatus there are no specific descriptions about mapping of respective information in simultaneously transmitting the uplink data and the reception quality information from the mobile station apparatus to the base station apparatus.
  • mapping of respective information refers to specific mapping of respective information (the uplink data and the reception quality information) as transmission data, that is, their specific mapping in a resource unit of the PUSCH (the minimum unit of a time-frequency block of the PUSCH) in simultaneously transmitting the uplink data and the reception quality information from the mobile station apparatus to a base station apparatus.
  • the base station apparatus can separate respective data by recognizing the mapping of the uplink data and the reception quality information.
  • the base station apparatus can extract only the reception quality information from the simultaneously transmitted uplink data and reception quality information, and efficiently transmit a downlink data by performing adaptive modulation and coding and/or frequency selective scheduling based on the extracted information.
  • the information amount of control signals transmitted from the base station apparatus for specifying the mapping of the uplink data and the reception quality information simultaneously transmitted from the mobile station apparatus needs to be kept small. Downlink resources would be inefficiently utilized if the base station apparatus transmits the control signals for specifying the mapping of respective information every time in transmitting the reception quality information from the mobile station apparatus.
  • the base station apparatus applies adaptive modulation and coding and/or frequency selective scheduling to the downlink data according to the reception quality information transmitted from the mobile station apparatus.
  • the modulation and coding and the frequency band used for uplink data transmission most appropriate for the mobile station apparatus would change. Even if the base station apparatus performs adaptive modulation and coding and/or frequency selective scheduling based on the reception quality information with a significant delay, it would fail to control the mobile station apparatus in an appropriate manner for the mobile station apparatus at that time. This would result in inefficient use of the downlink resources.
  • modulation scheme and coding rate to be specified in transmitting the uplink data are specified by the base station apparatus estimating the environment of a propagation path based on the uplink data or a reference signal transmitted from the mobile station apparatus. Therefore, in case that the uplink data and the reception quality information are simultaneously transmitted, if modulation scheme and coding rate of the reception quality information cannot comply with those of the uplink data specified by the base station apparatus, the probability of successful transmission of the reception quality information would decrease.
  • ACK/NACK of the Hybrid Automatic Repeat Request (HARQ) for the downlink data which is also an uplink information like the reception quality information. That is, the information amount of control signals transmitted from the base station apparatus for specifying the mapping of the uplink data and the ACK/NACK simultaneously transmitted from the mobile station apparatus to the base station apparatus needs to be kept small. Also, the delay in changing the mapping must be small. Furthermore, modulation scheme and coding rate of the ACK/NACK simultaneously transmitted with the uplink data must comply with those of the uplink data specified by the base station apparatus. Any specific descriptions about those three conditions: the information amount of control information for specifying the mapping of respective information, the delay occurring in changing the mapping of respective information, and the compliance with modulation scheme and coding rate of the uplink data are not provided in the prior art.
  • the present invention has been made in view of such circumstances, and provides a mobile communication system, a base station apparatus and a mobile station apparatus that can reduce the amount of control information for specifying the transmission method for simultaneously transmitting the uplink data and the reception quality information as well as the uplink data and the ACK/NACK, reduce the delay occurring in changing the transmission method, and realize the mapping of the uplink data and the reception quality information and that of the uplink data and the ACK/NACK, in compliance with modulation scheme and coding rate of the uplink data specified by the base station apparatus.
  • a mobile station apparatus is directed to a mobile station apparatus in a mobile communication system where the mobile station apparatus transmits, to the base station apparatus, reception quality information indicating quality of signals received from the base station apparatus, wherein the mobile station apparatus calculates, from information amount of reception quality information and modulation scheme and coding rate of uplink data, the number of symbols for reception quality information and transmits, to the base station apparatus, reception quality information with the calculated number of symbols together with uplink data.
  • the reception quality information is mapped to a lower frequency for resources allocated by the base station apparatus.
  • a mobile station apparatus is directed to a mobile station apparatus in a mobile communication system where the mobile station apparatus transmits, to the base station apparatus, ACK/NACK of the HARQ for downlink data, wherein the mobile station apparatus calculates, from information amount of ACK/NACK and modulation scheme and coding rate of uplink data, the number of symbols for ACK/NACK and transmits, to the base station apparatus, ACK/NACK with the calculated number of symbols together with uplink data.
  • a mobile station apparatus is directed to a mobile station apparatus in a mobile communication system where the mobile station apparatus transmits, to the base station apparatus, reception quality information indicating quality of signals received from the base station apparatus, wherein the mobile station apparatus keeps information amount for reception quality information constant without depending on resources allocated by the base station apparatus, calculates the number of symbols for reception quality information according to control information for uplink data specified by the base station apparatus, and transmits, to the base station apparatus, reception quality information with the calculated number of symbols together with uplink data.
  • a mobile station apparatus is directed to a mobile station apparatus in a mobile communication system where the mobile station apparatus transmits, to the base station apparatus, ACK/NACK of the HARQ for downlink data, wherein the mobile station apparatus keeps information amount for ACK/NACK constant without depending on resources allocated by the base station apparatus, calculates the number of symbols for ACK/NACK according to control information for uplink data specified by the base station apparatus, and transmits, to the base station apparatus, ACK/NACK with the calculated number of symbols together with uplink data.
  • a mobile communication system is directed to a mobile communication system where a base station apparatus allocates, to a mobile station apparatus, resources wherein the base station apparatus transmits, to the mobile station apparatus, control information for specifying a transmission format for the mobile station apparatus to transmit information by using an uplink, the mobile station apparatus transmits, to the base station apparatus, uplink data and reception quality information together based on the specified transmission format in case of having received the control information from the base station apparatus.
  • the transmission format of information to be transmitted using the uplink is that of uplink data.
  • the base station apparatus transmits, to the mobile station apparatus, as the control information, resource information specified by frequency component and time component, and the mobile station apparatus transmits, to the base station apparatus, uplink data and reception quality information together in a transmission format based on mapping of uplink data and reception quality information, which is associated with the resource information received from the base station apparatus.
  • the base station apparatus transmits, to the mobile station apparatus, as the control information, information for specifying modulation scheme and coding rate of uplink data, and the mobile station apparatus identifies modulation scheme and coding rate of reception quality information, which are associated with the information for specifying modulation scheme and coding rate of uplink data received from the base station apparatus, and transmits, to the base station apparatus, uplink data to which the modulation scheme and coding rate of the information for specifying modulation scheme and coding rate received from the base station apparatus are applied, together with reception quality information to which the identified modulation scheme and coding rate are applied.
  • a mobile communication system is directed to a mobile communication system where a base station apparatus allocates, to a mobile station apparatus, resources wherein the base station apparatus transmits, to the mobile station apparatus, control information for specifying a transmission format of information to be transmitted using an uplink by the mobile station apparatus, and the mobile station apparatus transmits, to the base station apparatus, uplink data and ACK/NACK together based on the specified transmission format in case of having received the control information from the base station apparatus.
  • the transmission format of information to be transmitted using the uplink is that of uplink data.
  • the base station apparatus transmits, to the mobile station apparatus, as the control information, resource information specified by frequency component and time component, and the mobile station apparatus transmits, to the base station apparatus, uplink data and ACK/NACK together in a transmission format based on mapping of uplink data and ACK/NACK, which is associated with the resource information received from the base station apparatus.
  • the base station apparatus transmits, to the mobile station apparatus, as the control information, information for specifying modulation scheme and coding rate of uplink data, and the mobile station apparatus identifies modulation scheme and coding rate of ACK/NACK, which are associated with the information for specifying modulation scheme and coding rate of uplink data received from the base station apparatus, and transmits, to the base station apparatus, uplink data to which the modulation scheme and coding rate of the information specifying for modulation scheme and coding rate received from the base station apparatus are applied, together with ACK/NACK to which the identified modulation scheme and coding rate are applied.
  • a base station apparatus is directed to a base station apparatus allocates, to a mobile station apparatus, resources, and comprising: a scheduler unit for performing scheduling of, for a mobile station apparatus, includes control information for specifying a transmission format to transmit uplink data and reception quality information together in a transmission signal, and a transmitting unit for transmitting, to the mobile station apparatus, the transmission signal including the control information.
  • the scheduler unit performs scheduling of including, as the control information, resource information specified by frequency component and time component in the transmission signal.
  • the scheduler unit performs scheduling of including, as the control information, information for specifying modulation scheme and coding rate of uplink data in the transmission signal.
  • a base station apparatus is directed to a base station apparatus allocates, to a mobile station apparatus, resources, and comprising: a scheduler unit for performing scheduling of, for a mobile station apparatus, includes control information for specifying a transmission format to transmit uplink data and ACK/NACK together in a transmission signal, and a transmitting unit for transmitting, to the mobile station apparatus, the transmission signal including the control signal.
  • the scheduler unit performs scheduling of includes, as the control information, resource information specified by frequency component and time component in the transmission signal.
  • the scheduler unit performs scheduling of includes, as the control information, information for specifying modulation scheme and coding rate of uplink data in the transmission signal.
  • a mobile station apparatus is directed to a mobile station apparatus is allocated resources by a base station apparatus, and comprising: a receiving unit for receiving, from the base station apparatus, control information for specifying a transmission format of information to be transmitted using an uplink, and a transmitting unit for transmitting, to the base station apparatus, uplink data and reception quality information together based on the specified transmission format in case that the receiving unit has received the control information from the base station apparatus.
  • the transmission format of information to be transmitted using the uplink is that of uplink data
  • the receiving unit automatically recognizes a transmission format of reception quality information from that of uplink data.
  • the transmitting unit transmits, to the base station apparatus, uplink data and reception quality information together in the transmission format based on mapping of uplink data and reception quality information, which is associated with the resource information.
  • the transmitting unit in case that the receiving unit has received, from the base station apparatus, information for specifying modulation scheme and coding rate of uplink data as the control information, the transmitting unit identifies modulation scheme and coding rate of reception quality information, which are associated with the information for specifying modulation scheme and coding rate of uplink data received from the base station apparatus, and transmits, to the base station apparatus, uplink data to which the modulation scheme and coding rate of the information for specifying modulation scheme and coding rate received from the base station apparatus are applied, together with reception quality information to which the identified modulation scheme and coding rate are applied.
  • a mobile station apparatus is directed to a mobile station apparatus is allocated resources by the base station apparatus, and comprising: a receiving unit for receiving, from the base station apparatus, control information for specifying a transmission format of information to be transmitted using an uplink, and a transmitting unit for transmitting, to the base station apparatus, uplink data and ACK/NACK together based on the specified transmission format in case that the receiving unit has received the control information from the base station apparatus.
  • the transmission format of information to be transmitted using the uplink is that of uplink data and that of ACK/NACK.
  • the transmission format of information to be transmitted using the uplink is that of uplink data
  • the receiving unit automatically recognizes a transmission format of ACK/NACK from that of the uplink data.
  • the transmitting unit transmits, to the base station apparatus, uplink data and ACK/NACK together in the transmission format based on mapping of uplink data and ACK/NACK, which is associated with the resource information.
  • the transmitting unit identifies modulation scheme and coding rate of ACK/NACK, which are associated with the information for specifying modulation scheme and coding rate of uplink data received from the base station apparatus, and transmits, to the base station apparatus, uplink data to which the modulation scheme and coding rate of the information for specifying modulation scheme and coding rate received from the base station apparatus are applied, together with ACK/NACK to which the identified modulation scheme and coding rate are applied.
  • the base station apparatus transmits, to the mobile station apparatus, control information for specifying a transmission format for the mobile station apparatus to simultaneously transmit the uplink data and the reception quality information
  • the mobile station apparatus simultaneously transmits, to the base station apparatus, the uplink data and the reception quality information based on the specified transmission format in case of having received the control information from the base station apparatus
  • transmission of control signals for specifying the mapping of respective information can be omitted, and the downlink resources can be effectively utilized.
  • the transmission format is specified based on the way of allocating uplink resources, the mapping of the uplink data and the reception quality information can be changed, and the transmission of control signals for changing the mapping of respective information can be omitted. As a result, the delay occurring in changing the mapping of respective information can be reduced.
  • FIG. 1 illustrates a block diagram showing a schematic configuration of a base station apparatus according to a first embodiment of the invention.
  • FIG. 2 illustrates a block diagram showing a schematic configuration of a mobile station apparatus according to the first embodiment of the invention.
  • FIG. 3 illustrates an exemplary mapping of information according to the first embodiment of the invention.
  • FIG. 4 illustrates an exemplary mapping of information according to the first embodiment of the invention.
  • FIG. 5 illustrates an exemplary mapping of information according to the first embodiment of the invention.
  • FIG. 6 illustrates an exemplary mapping of information according to the first embodiment of the invention.
  • FIG. 7 illustrates an exemplary mapping of information according to the first embodiment of the invention.
  • FIG. 8 illustrates an exemplary mapping of information according to the first embodiment of the invention.
  • FIG. 9 illustrates a sequence chart of the operations of a base station apparatus and a mobile station apparatus according to the first embodiment of the invention.
  • FIG. 10 illustrates the content of a predefined table used for a mobile communication system according to a second embodiment of the invention.
  • FIG. 11 illustrates a sequence chart of the operations of a base station apparatus and a mobile station apparatus according to the second embodiment of the invention.
  • FIG. 12 is a diagram illustrating a third embodiment of the invention.
  • FIG. 13 illustrates the content of a predefined table according to the third embodiment of the invention.
  • FIG. 14 is a diagram illustrating a communication method between a base station apparatus and a mobile station apparatus of the prior art.
  • FIG. 1 illustrates a block diagram showing a schematic configuration of the base station apparatus according to the first embodiment of the invention.
  • the base station apparatus 100 includes a data control unit 101 , a modulation encoding unit 102 , a mapping unit 103 , an inverse fast Fourier transformation (IFFT) unit 104 , a radio transmitting unit 105 , a radio receiving unit 106 , a fast Fourier transformation (FFT) unit 107 , a demodulation decoding unit 108 , a data extraction unit 109 , a scheduler unit 110 , a transmission information control unit 111 , and an antenna 112 .
  • the transmission information control unit 111 includes a modulation encoding control unit 111 a and a frequency selective scheduler unit 111 b.
  • Transmission data to be transmitted to each mobile station apparatuses and control data are input to data control unit 101 in the base station apparatus 100 , and each data is transmitted sequentially to the mobile station apparatuses following instructions of the scheduler unit 110 .
  • the modulation encoding unit 102 applies modulation and error-correcting coding to signals input from the data control unit 101 based on modulation scheme and coding rate determined by the modulation encoding control unit 111 a , and outputs each data to the mapping unit 103 .
  • the mapping unit 103 maps data input from the modulation encoding unit 102 onto each sub-carrier based on frequency selective scheduling information provided by the frequency selective scheduler unit 111 b , and outputs each of the data to the IFFT unit 104 .
  • the IFFT unit 104 applies inverse fast Fourier transformation to data input from the mapping unit 103 , then converts the input data into temporal baseband digital signals, and finally outputs the signals into the radio transmitting unit 105 .
  • digital/analog conversion is applied to the output signals from the IFFT unit 104 , and the resultant signals are then up-converted to a frequency appropriate for transmission and transmitted to each mobile station apparatuses via the antenna 112 .
  • the scheduler unit 110 performs scheduling for both the downlink and the uplink based on control information, such as resource regions available to each mobile station apparatuses, intermittent transmitting/receiving cycles, a format of a transmission data channel and buffer status.
  • the modulation encoding control unit 111 a determines modulation scheme and coding rate to be applied to each data based on the reception quality information transmitted from the mobile station apparatus and outputs them to the modulation encoding unit 102 .
  • the frequency selective scheduler unit 111 b applies frequency selective scheduling to each data based on the reception quality information transmitted from the mobile station apparatus and outputs the result to the mapping unit 103 .
  • FIG. 2 illustrates a block diagram showing a schematic configuration of the mobile station apparatus according to the first embodiment of the invention.
  • a mobile station apparatus 200 includes a data control unit 201 , a modulation encoding unit 202 , a mapping unit 203 , an inverse fast Fourier transformation (IFFT) unit 204 , a radio transmitting unit 205 , a radio receiving unit 206 , a fast Fourier transformation (FFT) unit 207 , a demodulation decoding unit 208 , a data extraction unit 209 , a reception quality information control unit 210 , and an antenna 211 .
  • the reception quality information control unit 210 includes a reception quality information generating unit 210 a and a reception quality measuring unit 210 b .
  • a receiving unit is composed of the radio receiving unit 206 , the FFT unit 207 , the demodulation decoding unit 208 , the data extraction unit 209 , and the reception quality information control unit 210
  • a transmitting unit is composed of the data control unit 201 , the modulation encoding unit 202 , the mapping unit 203 , the inverse fast Fourier transformation (IFFT) unit 204 , and the radio transmitting unit 205 .
  • IFFT inverse fast Fourier transformation
  • Transmission data to be transmitted to the base station apparatus and control data are input to the data control unit 201 in the mobile station apparatus 200 , and those data are transmitted sequentially to the base station apparatus.
  • the modulation encoding unit 202 applies modulation and error-correcting coding to signals input from the data control unit 201 , and outputs each data to the mapping unit 203 .
  • the mapping unit 203 maps data input from the modulation encoding unit 202 onto each sub-carrier, and outputs each of the data to the IFFT unit 204 .
  • the IFFT unit 204 applies inverse fast Fourier transformation to a sequence of symbols input from the mapping unit 203 , converts them into temporal baseband digital signals, and outputs them to the radio transmitting unit 205 .
  • digital/analog conversion is applied to the output signals from the IFFT unit 124 , and the resultant signals are up-converted to a frequency appropriate for transmission and then transmitted to the base station apparatus via the antenna 211 .
  • the reception quality measuring unit 210 b of the reception quality information control unit 210 measures reception quality of signals received from the base station apparatus.
  • the reception quality information generating unit 210 a generates reception quality information to be transmitted to the base station apparatus based on the information measured by the reception quality measuring unit 210 b.
  • the receiving unit composed of the radio receiving unit 206 , the FFT unit 207 , the demodulation decoding unit 208 , the data extraction unit 209 , and the reception quality information control unit 210 , receives control information for specifying a transmission format of information to be transmitted using the uplink from the base station apparatus, and based on the specified format, recognizes a transmission format for transmitting the uplink data and the reception quality information, as well as the uplink data and the ACK/NACK.
  • the transmitting unit composed of the data control unit 201 , the modulation encoding unit 202 , the mapping unit 203 , the IFFT unit 204 , and the radio transmitting unit 205 , simultaneously transmits, to the base station apparatus, the uplink data and the reception quality information, as well as the uplink data and the ACK/NACK in the transmission format recognized by the receiving unit.
  • FIG. 3 illustrates an exemplary mapping of uplink data and reception quality information transmitted from the mobile station apparatus to the base station apparatus according to the first embodiment of the invention.
  • FIG. 3 illustrates form 1 and form 2 .
  • the vertical direction represents a time axis, and here includes fourteen OFDM symbols as an example of resources allocated by the base station apparatus.
  • a plurality of known reference symbols (pilot signals, hereinafter referred to as “RS”) used for propagation path estimation to demodulate data, different number of the reception quality information and the uplink data between the form 1 and the form 2 are mapped onto these fourteen OFDM symbols.
  • RS reference symbols
  • the horizontal direction represents a frequency axis. Assuming a resource unit of the PUSCH (the minimum unit of a time-frequency block of the PUSCH) as one resource block, the base station apparatus allocates resources of one resource block in the form 1 and that of two resource blocks in the form 2 , in the frequency axis direction.
  • the mobile station apparatus transmits data by using the PUSCH according to resource allocation specified by a downlink control channel (Physical Downlink Control Channel, which will be referred to as “PDCCH” hereinafter) from the base station apparatus.
  • a downlink control channel Physical Downlink Control Channel, which will be referred to as “PDCCH” hereinafter
  • this downlink control channel is a signal for permitting data transmission in the uplink (i.e., L1/L2 grant).
  • the mobile station apparatus performs the mapping of information in simultaneously transmitting the uplink data and the reception quality information according to resources allocated by the base station apparatus using the L1/L2 grant.
  • the form 1 of FIG. 3 illustrates that the mobile station apparatus is allocated, by using the L1/L2 grant from the base station apparatus, resources having the amount of fourteen OFDM symbols in the time axis direction and one resource block in the frequency axis direction, and performs the mapping of the uplink data and the reception quality information associated with the allocated resources.
  • an element composed of one OFDM symbol and one sub-carrier is referred to as “resource element”.
  • resource element an element composed of one OFDM symbol and one sub-carrier.
  • the number of resource element for one OFDM symbol and one resource block is twelve, and the number of resource element in one resource block is 168 .
  • the form 2 of FIG. 3 illustrates that the mobile station apparatus is allocated, by using the L1/L2 grant from the base station apparatus, resources having the amount of fourteen OFDM symbols in the time axis direction and two resource blocks in the frequency axis direction, and performs the mapping of the uplink data and the reception quality information associated with the allocated resources.
  • the base station apparatus can be predetermined what type of resources the base station apparatus allocates by using the L1/L2 grant and accordingly how the mobile station apparatus maps the uplink data and the reception quality information. That is, according to the embodiment, it is predetermined in case that the base station apparatus allocates resources having the amount of fourteen OFDM symbols in the time axis direction and one resource block in the frequency axis direction, the mobile station apparatus performs the mapping of the uplink data and the reception quality information represented by the form 1 . Similarly, it is also predetermined that in case that the base station apparatus allocates resources having the amount of fourteen OFDM symbols in the time axis direction and two resource blocks in the frequency axis direction, the mobile station apparatus performs the mapping of the uplink data and the reception quality information represented by the form 2 .
  • the base station apparatus knows in advance what kind of mapping (e.g., form 1 or form 2 ) of the uplink data and the reception quality information transmitted simultaneously, the base station apparatus can separate the uplink data and the reception quality information. Then, the base station apparatus can apply adaptive modulation and coding and/or frequency selective scheduling to the downlink data based on the extracted reception quality information.
  • mapping e.g., form 1 or form 2
  • the form 1 has more reception quality information in the time axis direction (including fourteen OFDM symbols herein).
  • the reception quality information transmitted from the mobile station apparatus to the base station apparatus is mapped so as to be more tolerant against the temporal variation in a propagation path.
  • the form 2 has more reception quality information in the frequency axis direction. In this form, the reception quality information transmitted from the mobile station apparatus to the base station apparatus is mapped so as to be more tolerant against the frequency variation in the propagation path.
  • FIG. 4 illustrates another exemplary mapping of the uplink data and the reception quality information transmitted from a mobile station apparatus according to the first embodiment of the invention.
  • On the left side of the figure is shown a form similar to the form 1 in FIG. 3 .
  • the form 3 of FIG. 4 illustrates that the reception quality information can be simply mapped in the lower (or higher) frequency for the resources allocated by the base station apparatus. With this simple mapping, the base station apparatus can separate the uplink data and the reception quality information without any complicated processes.
  • FIG. 5 illustrates another exemplary mapping of the uplink data and the reception quality information transmitted from a mobile station apparatus according to the first embodiment of the invention.
  • form 4 Similar to the form 1 of FIG. 3 .
  • the form 4 is significantly different from the form 1 in that the reception quality information is mapped in the frequency axis direction in a distributed manner and that the uplink data is inserted into the place where the reception quality information was.
  • Each region for the reception quality information is composed of one or more resource element groups. Also, as shown in the form 5 in FIG.
  • the mapping more tolerant against the frequency variation in a propagation path can be achieved, while a resource of the same size as the form 4 still being used for transmitting the reception quality information (although four resource element groups in the form 4 and two resource element groups in the form 5 are used for one OFDM symbol, the size of the forms is the same because the latter form uses two resource blocks in the frequency axis direction).
  • FIGS. 6 to 8 illustrate exemplary mappings of the uplink data and the reception quality information transmitted from the mobile station apparatus according to the first embodiment of the invention. Those figures are significantly different from FIGS. 3 to 5 in that in each form, the mapping of the uplink data and the reception quality information is illustrated with gradation pattern. Forms depicted on the left side of FIGS. 6 to 8 are shown as form 1 ′ associated with the form 1 illustrated in FIG. 3 .
  • the gradation patterns show that the uplink data and the reception quality information are mixedly mapped also in one resource element. More particularly, they are mixed prior to their mapping onto the resource element.
  • the black part and the white part of the gradation pattern indicate the reception quality information and the uplink data, respectively.
  • the uplink data and the reception quality information are mixed before being mapped onto the resource element, and then mapped onto twelve resource elements, for example. That is, conceptually, one resource element contains a part of the reception quality information and a part of the uplink data.
  • the form 1 ′ in FIG. 6 illustrates the mapping of the uplink data and the reception quality information in case that one resource block is specified by the L1/L2 grant.
  • the uplink data and the receipt quality information are mixedly mapped in four OFDM symbols of the fourteen OFDM symbols.
  • the form 6 in FIG. 6 illustrates the mapping of the uplink data and the reception quality information in case that two resource blocks are specified by the L1/L2 grant.
  • the uplink data and the reception quality information are mapped as mixedly transmitted resources, and are further mapped using two resource blocks in the frequency direction.
  • the form 1 ′ in FIG. 7 is similar to the form 1 ′ illustrated in FIG. 6 .
  • the form 7 illustrates, similar to the form 6 in FIG. 6 , the mapping of the uplink data and the reception quality information in case that two resource blocks are specified by the L1/L2 grant.
  • the uplink data and the reception quality information are mixedly mapped as transmitted resources, and further are mapped using two resource blocks in the frequency direction. Therefore, the form 7 is the form that was mapped so that the information amount of the reception quality information can not increase as the number of allocated resource blocks increases.
  • the black part showing the reception quality information with gradation is depicted with the same density, indicates that the ratios of the uplink data and the reception quality information mixed are same.
  • the form 1 ′ illustrated in FIG. 8 is similar to the form 1 ′ illustrated in FIG. 6 .
  • the form 1 ′ and form 8 are significantly different in that each of the black part in the gradation pattern indicating the reception quality information is depicted with different density.
  • the black part of the form 8 has lighter density. This implies that the ratios of the uplink data and the reception quality information on mixed in the form 1 ′ and the form 8 are different, and implies that the ratios of the uplink data and the reception quality information mixed before being mapped onto the resource element.
  • FIG. 8 it is shown the information amount of the overall reception quality information to be transmitted in the form 1 ′ and the form 8 is same.
  • the form 1 ′ of FIG. 8 assuming that the reception quality information with the amount of “4” and the uplink data with the amount of “6” are mixed in resource having one symbol and one resource block, then for the form 8 , the reception quality information with the amount of “2” and the uplink data with the amount of “8” would be mixed in such resource. That is, the amount of the reception quality information included in resource of one symbol and one resource block becomes smaller.
  • the form 8 has the double number of resource blocks in which the uplink data and the reception quality information are mixed for transmission. That is, the reception quality information transmitted in whole form 1 ′ and that in whole form 7 have the same amount of information amount.
  • the base station apparatus can be composed to be able to extract received information as one integrated information (the reception quality information, the uplink data) after receiving all of the distributed resource elements.
  • the mobile station apparatus needs not determine where the resource element including the uplink data or the reception quality information should be mapped, and can efficiently perform tasks needed on mapping information onto the resource element.
  • Such mixing of the uplink data and the reception quality information can be done by, for example, inserting the reception quality information per modulation symbol into the place where the uplink data was, and by applying, for example, discrete Fourier conversion to the information.
  • a mobile station apparatus can perform the mapping of the uplink data and the reception quality information as shown in FIGS. 3 to 8 depending on resources allocated by the L1/L2 grant from the base station apparatus.
  • the mobile station apparatus can change the ratio of the uplink data and the reception quality information to be mixed, depending on resources allocated by the L1/L2 grant from the base station apparatus.
  • the mobile station apparatus can change the density of the black part indicating the reception quality information depending on resources allocated by the L1/L2 grant from the base station apparatus.
  • the mapping of information described above is exemplary only, and for example, the mappings shown in FIGS. 3 to 8 can be combined, and any mapping of the uplink data and the reception quality information to be simultaneously transmitted from the mobile station apparatus can be possible.
  • the way of mapping the reception quality information on the resource element groups described above can be roughly divided into two parts.
  • the one is for increasing the resource amount of the reception quality information in proportion to that of resources allocated for the uplink data.
  • the other is for changing the mapping so that the resource amount (the number of resource elements) of the reception quality information can be always constant, depending on resource allocation for the uplink data.
  • An example of this mapping is any of the mappings of form 2 , 3 , 5 , 7 or 8 .
  • modulation scheme and coding rate applied to the reception quality information are set to be constant.
  • the former and latter mapping methods described above are defined as “information-increasing type” and “information-keeping type”, respectively. It will also be described how to control each type of mapping method.
  • a control method for the information-increasing type of mapping method in the base station apparatus will be described.
  • the base station apparatus can transmit, to a mobile station apparatus, a RRC signaling including information indicating the minimum amount and/or the maximum amount of resources in which the reception quality information can be mapped.
  • the minimum amount of resources, in which the reception quality information can be mapped can be set as the resource amount of the reception quality information (e.g., the number of modulation symbols, the number of resource elements, the information amount, etc.) that can be mapped in one resource block. That is, it is the maximum resource amount of the reception quality information that can be mapped in one resource block. Meanwhile, the maximum amount of resources, in which the reception quality information can be mapped, can be set as the maximum resource amount of the reception quality information (e.g., the number of modulation symbols, the number of resource elements, the information amount, etc.) that can be mapped in resource blocks allocated by the base station apparatus.
  • the maximum amount of resources, in which the reception quality information can be mapped can be set as the maximum resource amount of the reception quality information (e.g., the number of modulation symbols, the number of resource elements, the information amount, etc.) that can be mapped in resource blocks allocated by the base station apparatus.
  • a mobile station apparatus continues to perform the mapping of the uplink data and the reception quality information with the information-increasing type (see the forms 1 , 1 ′ and 6 ) based on the number of resource blocks and/or the transport block size allocated by the L1/L2 grant before reaching the minimum amount of resources, in which the reception quality information can be mapped (the maximum amount of the reception quality information to be mapped in one resource block), set by the RRC signaling from the base station apparatus.
  • the mobile station apparatus maps the uplink data and the reception quality information, and so that the resource amount does not exceed the maximum amount of resources set by the base station apparatus, by decreasing the resource amount in the time direction for mapping the reception quality information as shown in the form 7 , or by decreasing the reduction rate of the uplink data to decrease the ratio of resource amount for mapping the reception quality information as shown in the form 8 .
  • the mobile station apparatus maps the uplink data and the reception quality information, and so that the resource amount does not fall below the minimum amount set by the base station apparatus, by increasing the resource amount in the time direction for mapping the reception quality information as shown in the form 7 , or by increasing the reduction rate of the uplink data to increase the ratio of resource amount for mapping the reception quality information as shown in the form 8 .
  • the base station apparatus transmits the RRC signaling including information indicating the minimum amount and/or the maximum amount of resources in which the reception quality information can be mapped. Having received the signal, the mobile station apparatus changes the mapping of the uplink data and the reception quality information, and transmits them simultaneously.
  • the resources for transmitting the reception quality information calculated based on the L1/L2 grant is larger (i.e., when the uplink data having larger information amount is transmitted)
  • the transmission of the reception quality information with a certain amount or more (i.e., the reception quality information having too large information amount) by the mobile station apparatus can be avoided, and significant increase of overhead of the uplink caused by the transmission of the reception quality information can be avoided.
  • the mobile station apparatus can transmit the reception quality information with a certain amount or more (the reception quality information set by the minimum amount), and the quality of the reception quality information can be maintained above a certain level. Moreover, by setting the minimum amount that can be calculated based on the L1/L2 grant as the minimum amount, the transmission of the reception quality information that falls below the minimum amount by the mobile station apparatus can be avoided.
  • the maximum amount or the minimum amount need not to be set by using the RRC signaling.
  • the base station apparatus can transmit, to the mobile station apparatus, the RRC signaling including information indicating a certain amount (keeping value, hereinafter) of resources in which the reception quality information can be mapped.
  • the keeping amount of resources, in which the reception quality information can be mapped can be defined as a certain resource amount (e.g., the number of modulation symbols, the number of resource elements, the information amount, etc.) of the reception quality information that can be mapped in resource blocks allocated by the base station.
  • the mobile station apparatus maps the uplink data and the reception quality information having a size of “10” whatever number of resource blocks and/or transport block size are allocated by the L1/L2 grant.
  • the mobile station apparatus maps the uplink data and the reception quality information, and so that the resource amount does not exceed the keeping amount set by the base station apparatus, by decreasing the resource amount in the time direction for mapping the reception quality information as shown in the form 7 , or by decreasing the reduction rate of the uplink data to decrease the proportion of resource amount for mapping the reception quality information as shown in the form 8 .
  • the mobile station apparatus maps the uplink data and the reception quality information, and so that the resource amount does not fall below the keeping amount set by the base station apparatus, by increasing the resource amount in the time direction for mapping the reception quality information as shown in the form 7 , or by increasing the reduction rate of the uplink data to increase the resource amount for the reception quality information as shown in the form 8 .
  • the base station apparatus transmits the RRC signaling including information (keeping value) indicating a certain amount of resources in which the reception quality information can be mapped. Having received the signal, the mobile station apparatus simultaneously transmits the uplink data and a certain amount of the reception quality information. Hereby, the mobile station apparatus can transmit a certain amount of the reception quality information without depending on resources allocated by the L1/L2 grant.
  • FIG. 9 illustrates a sequence chart of operations of a base station apparatus and a mobile station apparatus according to the first embodiment of the invention.
  • the base station apparatus allocates resources for the mobile station apparatus to transmit the uplink data by using the L1/L2 grant (step S 61 ).
  • the resources are allocated according to the form 1 in FIG. 3 .
  • the mobile station apparatus simultaneously transmits the uplink data and the reception quality information with the information mapping (of the form 1 , herein) associated with the allocated resources (step S 62 ).
  • the base station apparatus again allocates resources for the mobile station apparatus to transmit the uplink data by using the L1/L2 grant (step S 63 ).
  • the resources are allocated according to the form 2 in FIG. 3 .
  • the mobile station apparatus simultaneously transmits the uplink data and the reception quality information with the information mapping (of the form 2 , herein) associated with the allocated resources (step S 64 ).
  • the mapping of the uplink data and the reception quality information associated with the resources allocated by the base station apparatus using the L1/L2 grant can be predetermined.
  • the transmission of control signals to specify the mapping of respective information is unnecessary.
  • inefficient use of the downlink resources can be reduced.
  • any control signals for changing the mapping of respective information is not needed, and the delay in changing the mapping of respective information can be reduced.
  • the base station apparatus allocates resources for the uplink data.
  • the base station apparatus since performing the mapping of the reception quality information simultaneously transmitted with the uplink data in accordance with this resource allocation, as a result, the base station apparatus allocates resources for the uplink data and the reception quality information.
  • the first embodiment of the invention described above can be applied when the uplink data and the ACK/NACK are transmitted simultaneously. That is, by predetermining the mapping of the uplink data and the ACK/NACK in accordance with the resource allocation of the uplink data from the base station apparatus, and by the mobile station apparatus performing the mapping of the uplink data and the ACK/NACK in accordance with the resource allocation of the uplink data from the base station apparatus, control signals to specify the mapping of respective information (the uplink data and the ACK/NACK) are unnecessary. As a result, inefficient use of the downlink resources can be reduced.
  • any control signals for changing the mapping of respective information is not needed, and the delay in changing the mapping of respective information can be reduced.
  • the mobile station apparatus determines modulation scheme and coding rate to be applied to the reception quality information simultaneously transmitted based on modulation scheme and coding rate applied to the uplink data allocated by the base station apparatus using the L1/L2 grant.
  • the base station apparatus allocates resources for the uplink data by using the L1/L2 grant, and specifies the modulation scheme and the coding rate applied to the uplink data. Having received this signal, the mobile station apparatus determines the modulation scheme and the coding rate to be applied to the reception quality information based on those applied to the uplink data. Note here that the modulation scheme and the coding rate to be applied to the uplink data by the base station apparatus using the L1/L2 grant and those to be applied associated with the reception quality information by the mobile station apparatus can be predetermined.
  • FIG. 10 illustrates the content of a predefined table in a mobile communication system according to the second embodiment.
  • the modulation scheme and the coding rate to be applied to the uplink data by the base station apparatus are associated with those to be applied to the reception quality information.
  • the base station apparatus specifies applying modulation scheme 16QAM and coding rate 1 ⁇ 4 to the uplink data, then the mobile station apparatus applies modulation scheme 16QAM or QPSK and coding rate 1 ⁇ 4 or 1 ⁇ 8 to the reception quality information for transmission.
  • the base station apparatus specifying applying modulation scheme 16QAM and coding rate 1 ⁇ 4 to the uplink data
  • the uplink data to which modulation scheme 16QAM and coding rate 1 ⁇ 4 are applied and the reception quality information to which modulation scheme 16QAM or QPSK and coding rate 1 ⁇ 4 or 1 ⁇ 8 are applied are simultaneously transmitted from the mobile station apparatus.
  • the coding rate applied to the uplink data and the coding rate applied to the reception quality information can be calculated from the modulation scheme and the transport block size to be transmitted. That is, the modulation scheme and the transport blocks to be transmitted can be predefined.
  • This association between the modulation scheme and the coding rate of the uplink data and those of the reception quality information can be mapped in advance in one-to-one or one-to-many manner.
  • the blind decoding described below will be applied with multiple modulation schemes and coding rates associated with the modulation scheme and the coding rate of the uplink data on demodulating the reception quality information in the base station apparatus.
  • the modulation scheme and the coding rate of the reception quality information simultaneously transmitted with the uplink data can comply with those of the uplink data, improving probability of successful transmission of the reception quality information.
  • the base station apparatus can decode respective information based on the modulation scheme and the coding rate of the reception quality information because the base station apparatus knows in advance the modulation scheme and the coding rate of the reception quality information simultaneously transmitted with the uplink data. Note here that in case that the association between the modulation scheme and the coding rate of the uplink data and those of the reception quality information is mapped in one-to-many manner, the decoding will be attempted for all possible modulation schemes and coding rates (blind decoding), and then the results will be checked by the cyclic redundancy check (CRC) for correct modulation.
  • the base station apparatus applies adaptive modulation and coding and/or frequency selective scheduling to the downlink data base on the correctly demodulated reception quality information.
  • FIG. 11 illustrates a sequence chart of operations of a base station apparatus and a mobile station apparatus according to the second embodiment of the invention.
  • the base station apparatus specifies the modulation scheme and the coding rate applied to the uplink data by using L1/L2 grant (step S 71 ,).
  • modulation scheme A and coding rate B are specified as the modulation scheme and the coding rate applied to the uplink data.
  • the mobile station apparatus applies modulation scheme and coding rate associated with the modulation scheme A and the coding rate B to the reception quality information.
  • modulation scheme C and coding rate D are applied to the reception quality information associated with the modulation scheme A and the coding rate B, respectively.
  • the mobile station apparatus simultaneously transmits, to the base station apparatus, the uplink data to which the modulation scheme A and the coding rate B are applied and the reception quality information to which the modulation scheme C and the coding rate D are applied (step S 72 ).
  • the base station apparatus again specifies modulation scheme and coding rate applied to the uplink data by using the L1/L2 grant (step S 73 ).
  • modulation scheme E and coding rate F are specified as the modulation scheme and the coding rate applied to the uplink data.
  • the mobile station apparatus having received the L1/L2 grant from the base station apparatus, applies modulation scheme and coding rate associated with the modulation scheme E and coding rate F to the reception quality information.
  • modulation scheme G and coding rate H are applied to the reception quality information associated with the modulation scheme E and coding rate F, respectively.
  • the mobile station apparatus simultaneously transmits, to the base station apparatus, the uplink data to which the modulation scheme E and the coding rate F are applied and the reception quality information to which the modulation scheme G and the coding rate H are applied (step S 74 ).
  • the modulation scheme and the coding rate of the reception quality information associated with those applied to the uplink data by the base station apparatus using the L1/L2 grant are predetermined.
  • the modulation scheme and the coding rate of the reception quality information simultaneously transmitted with the uplink data are predetermined in accordance with those applied to the uplink data specified by the base station apparatus, and the mobile station apparatus can apply the modulation scheme and the coding rate to the reception quality information in accordance with the specification of the modulation scheme and the coding rate to be applied to the uplink data.
  • the reception quality information transmitted from the mobile station apparatus to the base station apparatus can comply with the modulation scheme and the coding rate of the uplink data, improving probability of successful transmission of the reception quality information.
  • the base station apparatus specifies the modulation scheme and the coding rate to be applied to the uplink data.
  • the base station apparatus specifies the modulation scheme and the coding rate of the uplink data and the reception quality information as a result.
  • the second embodiment of the invention described above can be applied also when the uplink data and the ACK/NACK are simultaneously transmitted. That is, by predetermining the modulation scheme and the coding rate of the ACK/NACK simultaneously transmitted with the uplink data in accordance with the specification of those to be applied to the uplink data from the base station apparatus, and by the mobile station apparatus applying the modulation scheme and the coding rate to the ACK/NACK in accordance with the specification of those to be applied to the uplink data from the base station apparatus, the ACK/NACK transmitted from the mobile station apparatus to the base station apparatus can comply with the modulation scheme and the coding rate of the uplink data, improving probability of successful transmission of the reception quality information.
  • FIG. 12 illustrates the L1/L2 grant transmitted from the base station apparatus to the mobile station apparatus, reception quality information a periodically transmitted, reception quality information periodically transmitted, uplink data from the mobile station apparatus to the base station apparatus, and a transmission form for simultaneously transmitting the uplink data or the uplink data and the reception quality information.
  • a periodical transmission of the reception quality information from the mobile station apparatus to the base station apparatus can be achieved, for example, by the base station apparatus transmitting the L1/L2 grant including one-bit information, by the mobile station apparatus transmitting the reception quality information to the base station apparatus after having received the signal.
  • periodical transmission of the reception quality information from the mobile station apparatus to the base station apparatus can be achieved, for example, by the base station apparatus transmitting the RRC signaling including information setting periodicity for transmitting the reception quality information from the base station apparatus to the mobile station apparatus, by the mobile station apparatus transmitting the reception quality information with the set periodicity to the base station apparatus after having received the signal.
  • FIG. 12 illustrates, as an example, operations of the slots 1 to 10 . Also, on the right side of FIG. 12 is shown a processing flow of each slot.
  • FIG. 13 illustrates a predefined table of modulation scheme and coding rate utilized in the third embodiment.
  • the mobile station apparatus for which modulation scheme and coding rate are specified for the uplink data by the L1/L2 grant from the base station apparatus, applies modulation scheme and coding rate to the reception quality information by using the table defined in FIG. 13 . For example, if the base station apparatus specifies modulation scheme QPSK and coding rate 1 ⁇ 8 of the uplink data, then the mobile station apparatus applies modulation scheme BPSK and coding rate 1 ⁇ 4 to the reception quality information.
  • a base station apparatus transmits the RRC signaling including the minimum amount and/or the maximum amount and the keeping amount of resources in which the reception quality information can be mapped for the mobile station apparatus to simultaneously transmit the uplink data and the reception quality information.
  • the minimum value, the maximum value and the keeping value of information amount, in which the reception quality information can be mapped are set to 10, 50, and 20 respectively.
  • the minimum value and/or the maximum value and the keeping value of resources, in which the reception quality information can be mapped can be set, for example, by using the number of modulation symbols, the number of resource elements for mapping the reception quality information, and the information amount (the number of bits) of the reception quality information, before mapping the reception quality information onto the resource elements.
  • the minimum value and/or the maximum value and the keeping value are not necessarily be set.
  • the slot 2 is a slot which is set in advance by the base station apparatus to transmit the reception quality information periodically.
  • the base station apparatus allocates resources used for the mobile station apparatus to transmit the uplink data. Having received this signal, the mobile station apparatus simultaneously transmits the uplink data and the reception quality information with the information-keeping type of mapping method by using the allocated resources.
  • the mobile station apparatus transmits, to the base station apparatus, the uplink data and the reception quality information with the information-keeping type of mapping method.
  • the information-keeping type of mapping method is a mapping method to transmit a certain amount of the reception quality information with the keeping amount set by the RRC signaling.
  • the keeping value in which the reception quality information can be mapped is set to 20 by the RRC signaling from the base station apparatus.
  • the base station apparatus sets to use one resource block as resources, modulation scheme QPSK, and coding rate 1 ⁇ 8 for transmitting the uplink data.
  • modulation scheme and coding rate of the reception quality information are set to BPSK and 1/16, respectively.
  • the mobile station apparatus transmits, by using one resource block, the uplink data to which modulation scheme QPSK and coding rate 1 ⁇ 8 are applied, and the reception quality information with a size of 20 to which modulation scheme BPSK and coding rate 1/16 are applied. Therefore, the amount of resources used for this reception quality information is 320 (i.e., 20*1*16).
  • the base station apparatus sets to use two resource blocks as resources, modulation scheme QPSK, and coding rate 1 ⁇ 8 for transmitting the uplink data.
  • this means modulation scheme and coding rate of the reception quality information are set to BPSK and 1/16, respectively. That is, with this control from the base station apparatus, the mobile station apparatus transmits, by using two resource blocks, the uplink data to which modulation scheme QPSK and coding rate 1 ⁇ 8 are applied, and the reception quality information with a size of 20 to which modulation scheme BPSK and coding rate 1/16 are applied. Therefore, the amount of resources used for this reception quality information is 320 (i.e., 20*1*16).
  • the base station apparatus sets to use two resource blocks as resources, modulation scheme QPSK, and coding rate 1 ⁇ 4 for transmitting the uplink data.
  • this means modulation scheme and coding rate of the reception quality information are set to BPSK and 1 ⁇ 8, respectively. That is, with this control from the base station apparatus, the mobile station apparatus transmits, by using two resource blocks, the uplink data to which modulation scheme QPSK and coding rate 1 ⁇ 4 are applied, and the reception quality information with a size of 20 to which modulation scheme BPSK and coding rate 1 ⁇ 8 are applied. Therefore, the amount of resources used for transmitting this reception quality information will be 160 (i.e., 20*1*8).
  • the slot 3 is a slot which is set by the base station apparatus to transmit the reception quality information a periodically.
  • the slot is also set by controlling from the base station apparatus to transmit the reception quality information in a triggered manner.
  • the base station apparatus allocates resources used for the mobile station apparatus to transmit the uplink data. Having received this signal, the mobile station apparatus simultaneously transmits the uplink data and the reception quality information with the information-increasing type of mapping method by using the allocated resources.
  • the mobile station apparatus transmits, to the base station apparatus, the uplink data and the reception quality information with the information-increasing type of mapping method.
  • the information-increasing type of mapping method is a mapping method to transmit, in accordance with resources allocated by the L1/L2 grant from the base station apparatus, the reception quality information with the amount of resources for mapping the reception quality information being increased in the range of the minimum value and/or the maximum value set by the RRC signaling.
  • the minimum value and the maximum value, in which the reception quality information can be mapped are set to 10 and 250 respectively by the RRC signaling from the base station apparatus (herein, the minimum value and the maximum value are set with modulation scheme BPSK and coding rate 1/16).
  • the base station apparatus sets to use one resource block as resources, modulation scheme QPSK, and coding rate 1 ⁇ 8 for transmitting the uplink data. Referring to the table shown in FIG. 13 , this means modulation scheme and coding rate of the reception quality information are set to BPSK and 1/16, respectively.
  • the mobile station apparatus transmits, by using one resource block, the uplink data to which modulation scheme QPSK and coding rate 1 ⁇ 8 are applied, and the reception quality information with a size of 10 (10*1*1*( 1/16)/( 1/16)) to which modulation scheme BPSK and coding rate 1/16 are applied. Therefore, the amount of resources used for this reception quality information is 160 (i.e., 10*1*16).
  • the base station apparatus sets to use three resource blocks as resources for transmitting uplink data, modulation scheme QPSK, and coding rate 1/8.
  • this means modulation scheme and coding rate of the reception quality information are set to BPSK and 1/16, respectively. That is, with this control from the base station apparatus, the mobile station apparatus transmits, by using three resource blocks, the uplink data to which modulation scheme QPSK and coding rate 1 ⁇ 8 are applied, and the reception quality information with a size of 30 (10*3*1*( 1/16)/( 1/16)) to which modulation scheme BPSK and coding rate 1/16 are applied. Therefore, the amount of resources used for this reception quality information is 480 (i.e., 30*1*16).
  • the base station apparatus sets to use three resource blocks as resources, modulation scheme 16QAM, and coding rate 1 ⁇ 4 for transmitting the uplink data.
  • this means modulation scheme and the coding rate of the reception quality information are set to QPSK and 1 ⁇ 4, respectively. That is, with this control from the base station apparatus, the mobile station apparatus transmits, by using three resource blocks, the uplink data to which modulation scheme 16QAM and coding rate 1 ⁇ 4 are applied, and the reception quality information with a size of 240 (10*3*2*(1 ⁇ 4)/( 1/16)) to which modulation scheme QPSK and coding rate 1 ⁇ 4 are applied. Therefore, the amount of resources used for this reception quality information is 480 (i.e., 240*(1 ⁇ 2)*4).
  • this mapping method is an increasing type of mapping method for resource blocks, modulation scheme, and coding rate.
  • the base station apparatus sets to use three resource blocks as resources, modulation scheme 16QAM, and coding rate 1 ⁇ 4 for transmitting the uplink data.
  • this means modulation scheme and coding rate of the reception quality information are set to QPSK and 1 ⁇ 4, respectively. That is, with this control from the base station apparatus, the mobile station apparatus transmits, by using three resource blocks, the uplink data to which modulation scheme 16QAM and coding rate 1 ⁇ 4 are applied, and the reception quality information with a size of 30 (10*3*1*1) to which modulation scheme QPSK and coding rate 1 ⁇ 4 are applied.
  • this mapping method is an increasing type of mapping method for resource blocks, while a keeping type of mapping method for modulation scheme, and coding rate.
  • the base station apparatus sets to use four resource blocks as resources, modulation scheme 16QAM, and coding rate 1 ⁇ 4 for transmitting the uplink data.
  • this means modulation scheme and coding rate of the reception quality information are set to QPSK and 1 ⁇ 4, respectively. That is, with this control from the base station apparatus, the mobile station apparatus transmits, by using four resource blocks, the uplink data to which modulation scheme 16QAM and coding rate 1 ⁇ 4 are applied, and the reception quality information with a size of 320 (10*4*2*(1 ⁇ 4)/( 1/16)) to which modulation scheme QPSK and coding rate 1 ⁇ 4 are applied.
  • the mobile station apparatus transmits, to the base station apparatus, the reception quality information with a size of 250. Therefore, the amount of resources used for the reception quality information is 500 (i.e., 250*(1 ⁇ 2)*4).
  • the base station apparatus transmits the normal L1/L2 grant. Having received the signal, the mobile station apparatus transmits, to the base station apparatus, the uplink data. Similar operation will be done at the slot 8 .
  • the slot 7 is a slot which is set in advance by the base station apparatus to transmit the reception quality information periodically.
  • the base station apparatus allocates resources used for the mobile station apparatus to transmit the uplink data. Having received this signal, the mobile station apparatus simultaneously transmits the uplink data and the reception quality information with the information-keeping type of mapping method by using the allocated resources.
  • the information-keeping type of mapping method is similar to that of the slot 2 .
  • the slot 10 is a slot which is set by the base station apparatus to transmit the reception quality information aperiodically.
  • the slot is also set by controlling from the base station apparatus to transmit the reception quality information in a triggered manner.
  • the base station apparatus allocates resources used for a mobile station apparatus to transmit the uplink data. Having received this signal, the mobile station apparatus simultaneously transmits the uplink data and the reception quality information with the information-increasing type of mapping method by using the allocated resources.
  • the information-increasing type of mapping method is similar to that of the slot 3 .
  • the information amount used for the reception quality information and the number of modulation symbols used for the uplink data can be calculated as shown in the equations below.
  • Nrb, Md, and Cd be the number of resource blocks, a symbol rate for modulation scheme, and a coding rate, respectively, allocated by the L1/L2 grant for transmitting the uplink data.
  • Mc and CC be a symbol rate for modulation scheme and coding rate of the reception quality information, respectively, set with a predefined table such as shown in FIG. 13 .
  • MaxR, MinR (in the case of using a symbol rate Mo and coding rate Co), and ConR be the maximum value, the minimum value and the keeping value of the information amount, respectively, in which the reception quality information can be mapped, are set by the RRC signaling from the base station apparatus.
  • the minimum value, the maximum value and the keeping value of resources, in which the reception quality information can be mapped are set as the information amount of the reception quality information, for example, the resources can be set with the number of modulation symbols, or the number of resource elements for mapping the reception quality information before the reception quality information being mapped onto the resource elements.
  • the symbol rate Mc for modulation scheme and the coding rate Cc of the reception quality information can be defined as a function of the symbol rate Md and the coding rate Cd for the uplink data, and predefined with a table based on the specification and so on such as shown in FIG. 13 :
  • the number of modulation symbols Ncs used for the reception quality information from the mobile station apparatus can be represented using the Mc and the Cc as follows:
  • mapping method is a mapping method to transmit the reception quality information with the information amount of the reception quality information being increased in the range of the minimum value and/or the maximum value, which are set by the RRC signaling from the base station apparatus
  • the Bc can be defined as follows:
  • BC MAXMIN(Max R ,Min R*Nrb*Mc* 1/ Cc* 1/ Mo* Co ,Min R )
  • the number of modulation symbols Nds used for the uplink data can be represented as follows:
  • Nds Nrb* 168 ⁇ Ncs ⁇
  • ⁇ , ⁇ , ⁇ are coefficients and vary with other factors, such as the number of reference symbols included in resource blocks, or the spreading ratios applied to information, etc.
  • the symbol rate Mc for modulation scheme and the coding rate Cc of the reception quality information can be defined as a function of the symbol rate Md and the coding rate Cd for the uplink data and predefined with a table such as shown in FIG. 13 :
  • the number of modulation symbols Ncs used for the reception quality information from the mobile station apparatus can be represented using Mc and Cc as follows:
  • Ncs ConR*Mc* 1/ Cc* ⁇
  • the information-keeping type of mapping method is a mapping method to transmit the reception quality information with a certain information amount of the reception quality information by the keeping value, which is set by the RRC signaling from the base station apparatus
  • the Bc can be defined as follows:
  • the number of modulation symbols Nds used for the uplink data can be represented as follows:
  • ⁇ , ⁇ , ⁇ are coefficients and vary with other factors, such as the number of reference symbols included in resource blocks, or the spreading ratios applied to information, etc.
  • the base station apparatus transmits the RRC signaling including information indicating the minimum amount and/or the maximum amount of resources in which the reception quality information can be mapped. Having received the signal, the mobile station apparatus changes the mapping of the uplink data and the reception quality information, and simultaneously transmits them.
  • the resources for transmitting the reception quality information calculated based on the L1/L2 grant is larger (i.e., when the uplink data having larger information amount is transmitted)
  • the transmission of the reception quality information with a certain amount or more (i.e.; the reception quality information having too large information amount) by the mobile station apparatus can be avoided, and significant increase of overhead of the uplink caused by the transmission of the reception quality information can be avoided.
  • the mobile station apparatus can transmit the reception quality information with a certain amount or more (the reception quality information set by the minimum amount), and the quality of the reception quality information can be maintained above a certain level. Moreover, by setting the minimum amount that can be calculated based on the L1/L2 grant as the minimum amount, the transmission of the reception quality information that falls below the minimum amount by the mobile station apparatus can be avoided.
  • the maximum amount or the minimum amount need not to be set by using the RRC signaling.
  • the base station apparatus transmits the RRC signaling including information indicating the keeping value of resources in which the reception quality information can be mapped. Having received the signal, the mobile station apparatus simultaneously transmits the uplink data and a certain amount of the reception quality information. Hereby, the mobile station apparatus can transmit a certain amount of the reception quality information without depending on resources allocated by the L1/L2 grant.
  • the mobile station apparatus applying the information-keeping type of mapping method in transmitting the uplink data and periodic reception quality information, a certain amount of the reception quality information can be periodically transmitted to the base station apparatus. Meanwhile, by the mobile station apparatus applying the information-increasing type of mapping method in transmitting the uplink data and aperiodic reception quality information, the reception quality information comply with resources allocated by the L1/L2 grant can be transmitted to the base station apparatus.
  • the base station apparatus can transmit control information for specifying a transmission format (resource information (mapping onto resource element) and/or modulation scheme and/or coding rate) of information (uplink data and/or reception quality information and/or HARQ ACK/NACK) transmitted in the uplink, while the mobile station apparatus can transmit, to the base station apparatus, information in the uplink based on the transmission format specified by the base station apparatus.
  • a transmission format resource information (mapping onto resource element) and/or modulation scheme and/or coding rate) of information (uplink data and/or reception quality information and/or HARQ ACK/NACK) transmitted in the uplink
  • the mobile station apparatus can transmit, to the base station apparatus, information in the uplink based on the transmission format specified by the base station apparatus.
  • the mobile station apparatus is directed to the mobile station apparatus in the mobile communication system where the mobile station apparatus transmits, to the base station apparatus, the reception quality information indicating quality of signals received from the base station apparatus, wherein the mobile station apparatus calculates, from information amount of the reception quality information and modulation scheme and coding rate of the uplink data, number of symbols for the reception quality information, and transmits, to the base station apparatus, the reception quality information with the calculated number of symbols together with the uplink data.
  • the reception quality information is mapped to a lower frequency for resources allocated by the base station apparatus.
  • the mobile station apparatus is directed to the mobile station apparatus in the mobile communication system where the mobile station apparatus transmits, to a base station apparatus, the ACK/NACK of the HARQ for downlink data, wherein the mobile station apparatus calculates, from information amount of the ACK/NACK and modulation scheme and coding rate of the uplink data, number of symbols for the ACK/NACK, and transmits, to the base station apparatus, the ACK/NACK with the calculated number of symbols together with the uplink data.
  • the mobile station apparatus is directed to the mobile station apparatus in the mobile communication system where the mobile station apparatus transmits, to a base station apparatus, the reception quality information indicating quality of signals received from the base station apparatus, wherein the mobile station apparatus keeps information amount for the reception quality information constant without depending on resources allocated by the base station apparatus, calculates number of symbols for the reception quality information according to control information for the uplink data specified by the base station apparatus, and transmits, to the base station apparatus, the reception quality information with the calculated number of symbols together with the uplink data.
  • the mobile station apparatus is directed to the mobile station apparatus in the mobile communication system where the mobile station apparatus transmits, to the base station apparatus, the ACK/NACK of the HARQ for downlink data, wherein the mobile station apparatus keeps information amount for the ACK/NACK constant without depending on resources allocated by the base station apparatus, calculates number of symbols for the ACK/NACK according to control information for the uplink data specified by the base station apparatus, and transmits, to the base station apparatus, the ACK/NACK with the calculated number of symbols together with the uplink data.
  • the mobile communication system is directed to the mobile communication system where the mobile station apparatus measures the reception quality of signals received from the base station apparatus, and transmits, to the base station apparatus, the reception quality information, while the base station apparatus allocates, to the mobile station apparatus, resources based on the reception quality information received from the mobile station apparatus, wherein the base station apparatus transmits, to the mobile station apparatus, control information for specifying a transmission format for the mobile station apparatus to transmit information by using the uplink, the mobile station apparatus transmits, to the base station apparatus, the uplink data and the reception quality information together based on the specified transmission format in case of having received the control information from the base station apparatus.
  • the transmission format of information to be transmitted by using the uplink is that of the uplink data.
  • the base station apparatus transmits, to the mobile station apparatus, control information for specifying a transmission format for the mobile station apparatus to transmit information by using the uplink
  • the mobile station apparatus transmits, to the base station apparatus, the uplink data and the reception quality information together based on the specified transmission format in case of having received the control information from the base station apparatus, the transmission of any control signals for specifying the mapping of respective information can be omitted, and the downlink resources can be effectively utilized.
  • the transmission format is specified based on the way of allocating uplink resources, the mapping of the uplink data and the reception quality information can be changed, and the transmission of control signals for changing the mapping of respective information can be omitted. As a result, any delay occurring in changing the mapping of respective information can be reduced.
  • the base station apparatus transmits, to the mobile station apparatus, as the control information, resource information specified by frequency component and time component, and the mobile station apparatus transmits, to the base station apparatus, the uplink data and the reception quality information together in a transmission format based on mapping of the uplink data and the reception quality information, which is associated with the resource information received from the base station apparatus.
  • the transmission format for the mobile station apparatus to transmit, to the base station apparatus, the uplink data and the reception quality information together can specified.
  • the transmission of any control signals for specifying the mapping of respective information can be omitted, and the downlink resources can be effectively utilized.
  • the base station apparatus transmits, to the mobile station apparatus, as the control information, information for specifying modulation scheme and coding rate of the uplink data, and the mobile station apparatus identifies modulation scheme and coding rate of the reception quality information, which are associated with the information for specifying modulation scheme and coding rate of the uplink data received from the base station apparatus, and transmits, to the base station apparatus, the uplink data to which the modulation scheme and the coding rate of the information for specifying modulation scheme and coding rate received from the base station apparatus are applied, together with the reception quality information to which the identified modulation scheme and coding rate are applied.
  • the base station apparatus transmits, to the mobile station apparatus, as the control information, information for specifying modulation scheme and coding rate of the uplink data, while the mobile station apparatus identifies modulation scheme and coding rate of the reception quality information, which are associated with the information for specifying modulation scheme and coding rate of the uplink data received from the base station apparatus, and transmits, to the base station apparatus, the uplink data to which the modulation scheme and the coding rate of the information for specifying modulation scheme and coding rate received from the base station apparatus are applied, together with the reception quality information to which the identified modulation scheme and coding rate are applied.
  • the reception quality information transmitted from the mobile station apparatus to the base station apparatus can comply with the modulation scheme and the coding rate of the uplink data, improving probability of successful transmission of the reception quality information.
  • the mobile communication system is directed to the mobile communication system where the base station apparatus allocates, to a mobile station apparatus, resources wherein the base station apparatus transmits, to the mobile station apparatus, control information for specifying a transmission format for the mobile station apparatus to transmit information by using the uplink, and the mobile station apparatus transmits, to the base station apparatus, the uplink data and the ACK/NACK together based on the specified transmission format in case of having received the control information from the base station apparatus.
  • the transmission format of information to be transmitted by using the uplink is that of the uplink data.
  • a base station apparatus transmits, to a mobile station apparatus, control information for specifying a transmission format for the mobile station apparatus to transmit information
  • the mobile station apparatus transmits, to the base station apparatus, the uplink data and the ACK/NACK together based on the specified transmission format in case of having received the control information from the base station apparatus
  • the transmission of any control signals for specifying the mapping of respective information can be omitted, and the downlink resources can be effectively utilized.
  • the transmission format is specified based on the way of allocating uplink resources, the mapping of the uplink data and the ACK/NACK can be changed, and the transmission of control signals for changing the mapping of respective information can be omitted. As a result, any delay occurring in changing the mapping of respective information can be reduced.
  • the base station apparatus transmits, to the mobile station apparatus, as the control information, resource information specified by frequency component and time component, and the mobile station apparatus transmits, to the base station apparatus, the uplink data and the ACK/NACK together in a transmission format based on mapping of the uplink data and the ACK/NACK, which is associated with the resource information received from the base station apparatus.
  • the transmission format for the mobile station apparatus to transmit, to the base station apparatus, the uplink data and the ACK/NACK together can be specified.
  • the transmission of any control signals for specifying the mapping of respective information can be omitted, and the downlink resources can be effectively utilized.
  • the base station apparatus transmits, to the mobile station apparatus, as the control information, information for specifying modulation scheme and coding rate of the uplink data, and the mobile station apparatus identifies modulation scheme and coding rate of the ACK/NACK, which are associated with the information for specifying modulation scheme and coding rate of the uplink data received from the base station apparatus, and transmits, to the base station apparatus, the uplink data to which the modulation scheme and the coding rate of the information for specifying modulation scheme and coding rate received from the base station apparatus are applied, together with the ACK/NACK to which the identified modulation scheme and coding rate are applied.
  • the base station apparatus transmits, to the mobile station apparatus, as the control information, information for specifying modulation scheme and coding rate of the uplink data, and the mobile station apparatus identifies modulation scheme and coding rate of the ACK/NACK, which are associated with the information for specifying modulation scheme and coding rate of the uplink data received from the base station apparatus, and transmits, to the base station apparatus, the uplink data to which the modulation scheme and the coding rate received from the base station apparatus are applied, together with the ACK/NACK to which the identified modulation scheme and coding rate are applied.
  • the ACK/NACK transmitted from the mobile station apparatus to the base station apparatus can comply with the modulation scheme and the coding rate of the uplink data, improving probability of successful transmission of the ACK/NACK.
  • the base station apparatus is directed to the base station apparatus allocates, to a mobile station apparatus, resources, and comprising: a scheduler unit for performing scheduling of, for a mobile station apparatus, including includes control information for specifying a transmission format to transmit the uplink data and the reception quality information together in a transmission signal, and a transmitting unit for transmitting, to the mobile station apparatus, the transmission signal including the control information.
  • control information for specifying a transmission format for the mobile station apparatus to transmit the uplink data and the reception quality information together is transmitted to the mobile station apparatus, the transmission of any control signals for specifying the mapping of respective information can be omitted, and the downlink resources can be effectively utilized.
  • the scheduler unit performs scheduling of including, as the control information, resource information specified by frequency component and time component in the transmission signal.
  • the transmission format for the mobile station apparatus to simultaneously transmit, to the base station apparatus, the uplink data and the reception quality information can be specified.
  • the transmission of any control signals for specifying the mapping of respective information can be omitted, and the downlink resources can be effectively utilized.
  • the scheduler unit performs scheduling of including, as the control information, information for specifying modulation scheme and coding rate of uplink data in the transmission signal.
  • the mobile station apparatus can identify modulation scheme and coding rate of the reception quality information, which are associated with the information, and transmit, to the base station apparatus, the uplink data to which the modulation scheme and the coding rate of the information are applied, together with the reception quality information to which the identified modulation scheme and coding rate are applied.
  • the reception quality information transmitted from the mobile station apparatus to the base station apparatus can comply with the modulation scheme and the coding rate of the uplink data, improving probability of successful transmission of the reception quality information.
  • the base station apparatus is directed to the base station allocates, to a mobile station apparatus, resources, and comprising: a scheduler unit for performing scheduling of, for a mobile station apparatus, including control information for specifying a transmission format to transmit the uplink data and the ACK/NACK together in a transmission signal, and a transmitting unit for transmitting, to the mobile station apparatus, the transmission signal including the control signal.
  • control information for specifying a transmission format for a mobile station apparatus to transmit the uplink data and the ACK/NACK together is transmitted to the mobile station apparatus, the transmission of any control signals for specifying the mapping of respective information can be omitted, and the downlink resources can be effectively utilized.
  • the scheduler unit performs scheduling of including as the control information, resource information specified by frequency component and time component in the transmission signal.
  • the transmission format for the mobile station apparatus to simultaneously transmit, to the base station apparatus, the uplink data and the ACK/NACK can be specified.
  • the transmission of any control signals for specifying the mapping of respective information can be omitted, and the downlink resources can be effectively utilized.
  • the scheduler unit performs scheduling of including, as the control information, information for specifying modulation scheme and coding rate of uplink data in the transmission signal.
  • the mobile station apparatus can identify the modulation scheme and the coding rate of the ACK/NACK, which are associated with the information, and transmit, to the base station apparatus, the uplink data to which the modulation scheme and the coding rate of the information are applied, together with the ACK/NACK to which the identified modulation scheme and coding rate are applied.
  • the ACK/NACK transmitted from the mobile station apparatus to the base station apparatus can comply with the modulation scheme and the coding rate of the uplink data, improving probability of successful transmission of the ACK/NACK.
  • the mobile station apparatus is directed to the mobile station apparatus is allocated resources by a base station apparatus, and comprising: a receiving unit for receiving, from the base station apparatus, control information for specifying a transmission format of information to be transmitted using the uplink, and a transmitting unit for transmitting, to the base station apparatus, the uplink data and the reception quality information together based on the specified transmission format in case that the receiving unit has received the control information from the base station apparatus.
  • the transmission format of information to be transmitted using the uplink is that of the uplink data
  • the receiving unit automatically recognizes the transmission format of the reception quality information from that of the uplink data.
  • the base station apparatus can omit the transmission of any control signals for specifying the mapping of respective information, and the downlink resources can be effectively utilized.
  • the transmission format is specified based on the way of allocating uplink resources, the mapping of the uplink data and the reception quality information can be changed, and the transmission of control signals for changing the mapping of respective information can be omitted. As a result, any delay occurring in changing the mapping of respective information can be reduced.
  • the transmitting unit transmits, to the base station apparatus, the uplink data and the reception quality information together in the transmission format based on mapping of the uplink data and the reception quality information, which is associated with the resource information.
  • the base station apparatus can omit the transmission of any control signals for specifying the mapping of respective information, and the downlink resources can be effectively utilized.
  • the transmitting unit in case that the receiving unit has received, from the base station apparatus, information for specifying modulation scheme and coding rate of the uplink data as the control information, the transmitting unit identifies modulation scheme and coding rate of the reception quality information, which are associated with the information for specifying modulation scheme and coding rate of the uplink data received from the base station apparatus, and transmits, to the base station apparatus, the uplink data to which the modulation scheme and coding rate of the information for specifying modulation scheme and coding rate received from the base station apparatus are applied, together with the reception quality information to which the identified modulation scheme and coding rate are applied.
  • the mobile station apparatus can identify modulation scheme and coding rate of the reception quality information, which are associated with the information, and transmit, to the base station apparatus, the uplink data to which the modulation scheme and coding rate of the control information are applied, together with the reception quality information to which the identified modulation scheme and coding rate are applied.
  • the reception quality information transmitted from the mobile station apparatus to the base station apparatus can comply with the modulation scheme and the coding rate of the uplink data, improving probability of successful transmission of the reception quality information.
  • the mobile station apparatus is directed to the mobile station apparatus is allocated resources by the base station apparatus, and comprising: a receiving unit for receiving, from the base station apparatus, control information for specifying a transmission format of information to be transmitted using the uplink, and a transmitting unit for transmitting, to the base station apparatus, the uplink data and the ACK/NACK together based on the specified transmission format in case that the receiving unit has received the control information from the base station apparatus.
  • the transmission format of information to be transmitted using the uplink is that of the uplink data and that of the ACK/NACK.
  • the transmission format of information to be transmitted using the uplink is that of the uplink data
  • the receiving unit automatically recognizes the transmission format of the ACK/NACK from that of the uplink data.
  • the base station apparatus can omit the transmission of any control signals for specifying the mapping of respective information, and the downlink resources can be effectively utilized.
  • the transmission format is specified based on the way of allocating uplink resources, the mapping of the uplink data and the ACK/NACK can be changed, and the transmission of control signals for changing the mapping of respective information can be omitted. As a result, any delay occurring in changing the mapping of respective information can be reduced.
  • the transmitting unit transmits, to the base station apparatus, uplink data and ACK/NACK together in the transmission format based on mapping of uplink data and ACK/NACK, which is associated with the resource information.
  • the transmission format for transmitting the uplink data and the ACK/NACK together to the base station apparatus can be specified.
  • the base station apparatus can omit the transmission of any control signals for specifying the mapping of respective information, and the downlink resources can be effectively utilized.
  • the transmitting unit in case that the receiving unit has received, from the base station apparatus, information for specifying modulation scheme and coding rate of uplink data as the control information, the transmitting unit identifies modulation scheme and coding rate of ACK/NACK, which are associated with the information for specifying modulation scheme and coding rate of uplink data received from the base station apparatus, and transmits, to the base station apparatus, uplink data to which the modulation scheme and coding rate of the information for specifying modulation scheme and coding rate received from the base station apparatus are applied, together with ACK/NACK to which the identified modulation scheme and coding rate are applied.
  • the mobile station apparatus can identify modulation scheme and coding rate of the ACK/NACK, which are associated with the information, and transmit, to the base station apparatus, the uplink data to which the modulation scheme and the coding rate of the information are applied, together with the ACK/NACK to which the identified modulation scheme and coding rate are applied.
  • the ACK/NACK transmitted from the mobile station apparatus to the base station apparatus can comply with the modulation scheme and the coding rate of the uplink data, improving probability of successful transmission of the ACK/NACK.

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