WO2006080507A1 - 無線送信装置および無線送信方法 - Google Patents
無線送信装置および無線送信方法 Download PDFInfo
- Publication number
- WO2006080507A1 WO2006080507A1 PCT/JP2006/301479 JP2006301479W WO2006080507A1 WO 2006080507 A1 WO2006080507 A1 WO 2006080507A1 JP 2006301479 W JP2006301479 W JP 2006301479W WO 2006080507 A1 WO2006080507 A1 WO 2006080507A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- relay
- signal
- instruction
- relay station
- transmission
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/04—Terminal devices adapted for relaying to or from another terminal or user
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15592—Adapting at the relay station communication parameters for supporting cooperative relaying, i.e. transmission of the same data via direct - and relayed path
-
- 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
- H04L1/0076—Distributed coding, e.g. network coding, involving channel coding
- H04L1/0077—Cooperative coding
-
- 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
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
-
- 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
- H04L2001/0092—Error control systems characterised by the topology of the transmission link
- H04L2001/0097—Relays
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/04—Interfaces between hierarchically different network devices
- H04W92/10—Interfaces between hierarchically different network devices between terminal device and access point, i.e. wireless air interface
Definitions
- the present invention relates to a wireless transmission device and a wireless transmission method, and particularly to a wireless transmission device and a wireless transmission method that transmit via a relay station device when transmitting a signal to a communication partner device.
- a transmission signal transmitted from a wireless transmission device (for example, a base station device) to a wireless reception device (for example, a mobile station device) and a plurality of relay station devices force S the transmission signal And the relay signal transmitted to the wireless receiving device by relaying the signal are combined by the wireless receiving device (see, for example, Patent Document 1). This achieves a diversity effect.
- Patent Document 1 JP 2001-189971 A
- An object of the present invention is to provide a wireless transmission device and a wireless transmission method capable of improving the error rate characteristics after combining received signals.
- a wireless transmission device wirelessly transmits a transmission signal addressed to a communication partner device to a plurality of relay station devices that respectively perform a process of generating a relay signal from the transmission signal and transmitting the transmission signal to the communication partner device.
- Determining means for determining a first instruction and a second instruction that are different from each other, the first instruction and the second instruction each having an instruction content for generation of the relay signal; The determined first instruction is notified to the first relay station apparatus among the plurality of relay station apparatuses, and the determined second instruction is transmitted to the first relay station apparatus among the plurality of relay station apparatuses.
- a notification means for notifying to a second relay station device different from the above.
- the wireless transmission method of the present invention wirelessly transmits a transmission signal addressed to a communication partner device to a plurality of relay station devices that respectively perform processing of generating a relay signal from the transmission signal and transmitting the transmission signal to the communication partner device.
- a wireless transmission method in a transmission device wherein a first instruction and a second instruction each having an instruction content for generation of the relay signal, wherein the first instruction and the second instruction are determined to be different from each other
- notifying the determined first instruction to the first relay station apparatus among the plurality of relay station apparatuses, and determining the determined second instruction among the plurality of relay station apparatuses A notification step of notifying the second relay station device different from the relay station device.
- FIG. 1 shows a configuration of a mobile communication system according to Embodiment 1 of the present invention.
- FIG. 2 is a block diagram showing a configuration of a mobile station apparatus according to Embodiment 1 of the present invention.
- FIG. 3 is a flowchart for explaining the operation of the mobile station apparatus according to Embodiment 1 of the present invention.
- FIG. 4 is a block diagram showing the configuration of the relay station apparatus according to Embodiment 1 of the present invention.
- FIG. 5 is a flowchart for explaining the operation of the relay station apparatus according to Embodiment 1 of the present invention.
- FIG. 6 is a block diagram showing the configuration of the base station apparatus according to Embodiment 1 of the present invention.
- ⁇ 7 Flow diagram for explaining the operation of the base station apparatus according to Embodiment 1 of the present invention.
- ⁇ 8 Diagram showing a table of error correction code patterns according to Embodiment 1 of the present invention.
- Fig. 10 is an operation sequence diagram of the mobile communication system according to the first embodiment.
- Fig. 10 is a diagram for explaining the synthesis of the relay signal according to the first embodiment of the present invention.
- Fig. 11 is a mobile according to the second embodiment of the present invention. The figure which shows the structure of the body communication system
- ⁇ 12 Block diagram showing the configuration of the relay station apparatus according to Embodiment 2 of the present invention.
- FIG. 14 Operation sequence diagram of mobile communication system according to Embodiment 2 of the present invention.
- ⁇ 15 Diagram showing a configuration of the mobile communication system according to Embodiment 3 of the present invention.
- ⁇ 17 Flow diagram for explaining the operation of the relay station apparatus according to Embodiment 3 of the present invention.
- ⁇ 18] Shows a table representing the correspondence relationship between error correction codes and channels according to Embodiment 3 of the present invention.
- FIG. 19 is an operation sequence diagram of the mobile communication system according to the third embodiment of the present invention.
- FIG. 1 is a diagram showing a configuration of a mobile communication system according to Embodiment 1 of the present invention.
- the mobile communication system 1 in FIG. 1 includes a mobile station device (hereinafter referred to as “mobile station”) 10, two relay station devices (hereinafter referred to as “relay stations”) 20-1, 20-2, and a base station device ( (Hereinafter referred to as “base station”).
- mobile station hereinafter referred to as “mobile station”
- relay stations hereinafter referred to as “relay stations”
- base station device hereinafter referred to as “base station”.
- relay stations 20-1 and 20-2 have the same internal configuration, when referring to any of relay stations 20-1 and 20-2 in the following description, Relay station 20 ”.
- the number of relay stations with the number of relay stations set to “2” may be one or three or more. Depending on the communication conditions, there may be several relay stations through which the transmission signal passes. However, in order to implement the present invention, the number of relay stations through which the transmission signal passes is preferably two or more. Better ,.
- mobile station 10 receives a signal (transmission signal) addressed to base station 30. Is transmitted to each relay station 20-1 and 20-2. Each relay station 20-1 and 20-2 receives the transmission signal. Each relay station 20-1 and 20-2 performs a relay process of generating a relay signal from the received transmission signal (reception signal) and transmitting it to the base station 30. The base station 30 receives the relay signals transmitted from the relay stations 20-1 and 202, and synthesizes the received relay signals.
- mobile station 10 includes antenna 111, radio reception section 112, demodulation section 113, error correction decoding section 114, relay instruction section 115, encoding section 116, modulation section 117, and radio transmission. Part 118.
- Radio receiving section 112 receives a downlink signal transmitted from another device such as base station 30 via antenna 111.
- the downlink signal includes signaling information such as information (reception quality information) about the reception quality of the signal received by the base station 30 from each of the relay stations 20-1, 20-2. including.
- predetermined reception radio processing eg, down-conversion, AZD conversion, etc.
- the downlink signal after the reception radio processing is output to demodulation section 113 and relay instruction section 115.
- Demodulation section 113 demodulates the signal input from radio reception section 112 and outputs the demodulated signal to error correction decoding section 114.
- Error correction decoding section 114 performs error correction decoding processing on the signal input from demodulation section 113 and outputs the result as a received signal.
- the relay instructing unit 115 grasps through which relay station the transmission signal is delivered to the base station 30. In the present embodiment, it is understood that the transmission signal passes through the relay stations 20-1 and 20-2 in parallel. In order to grasp this, for example, the relay instructing unit 115 obtains the signal power reception quality information input from the radio reception unit 112, and grasps the existence of the relay station based on the obtained reception quality information! To do. That is, the relay instruction unit 115 has a function as acquisition means.
- the relay instruction unit 115 also has a function as a determination unit, and determines and determines instruction contents for individually instructing the relay stations 20-1 and 20-2 regarding generation of the relay signal.
- the relay instruction signal indicating the instruction content is generated, and the generated relay instruction signal is output to the wireless transmission unit 118.
- the code unit 116 as an adding means performs error correction coding processing on the transmission signal addressed to the base station 30. This error correction coding process adds a parity bit to the transmission signal.
- Modulating section 117 modulates the transmission signal encoded by encoding section 116.
- the transmission signal modulated by modulation section 117 is output to radio transmission section 118.
- Radio transmission section 118 as a notification means performs predetermined transmission radio processing (for example, DZA conversion, up-conversion, etc.) on the relay instruction signal input from relay instruction section 115. Then, the relay instruction signal after the transmission radio processing is transmitted from the antenna 111 to the relay stations 20-1 and 20-2. Radio transmission section 118 performs predetermined transmission radio processing on the transmission signal input from modulation section 117. Then, the relay instruction signal after the transmission radio processing is transmitted from the antenna 111 to the relay stations 20-1 and 20-2.
- predetermined transmission radio processing for example, DZA conversion, up-conversion, etc.
- the mobile station 10 having the above configuration operates according to the flow shown as an example in FIG.
- the relay instructing unit 115 determines which relay station to relay (S101).
- the transmission signal is relayed by relay stations 20-1 and 20-2.
- the relay instruction unit 115 determines the instruction content of the relay instruction signal (S102).
- the error correction code power used in the error correction code processing performed when the transmission signal power relay signal is generated is individually applied to the relay station 20-1 and the relay station 20-2. Determined by That is, the error correction code is determined as the instruction content of the relay instruction signal notified to the relay station 20-1 and the relay station 20-2 regarding the generation of the relay signal.
- the error correction code determined as an instruction to the relay station 20-1 and the error correction code determined as an instruction to the relay station 20-2 are different from each other. Specific examples of instructions will be described later.
- relay instruction unit 115 a relay instruction signal indicating the determined instruction content is generated.
- the generated relay instruction signal is output from the relay instruction unit 115 to the wireless transmission unit 118 (S103).
- the wireless transmission unit 118 transmits the relay instruction signal input from the relay instruction unit 115 to the relay stations 20-1 and 20-2.
- the instruction content indicated in the relay instruction signal that is, the error correction code used in the relay signal generation process is changed to the relay station 20. 1 and each of relay stations 20-2.
- step S103 that is, transmission of the relay instruction signal
- step S104 the transmission signal is notified to each of relay station 20-1 and relay station 20-2 in radio transmission section 118 (S104).
- the relay instruction signal and the transmission signal are transmitted separately.
- the transmission method of each signal is not limited to the method described above.
- the relay instruction signal and the transmission signal may be transmitted together by performing processing such as adding the relay instruction signal to the header of the transmission signal by the wireless transmission unit 118.
- relay station 20 includes antenna 121, radio reception unit 122, demodulation unit 123, error correction decoding unit 124, relay instruction extraction unit 125, encoding unit 126, modulation unit 127, and radio unit. It has a transmitter 128.
- Radio receiving section 122 receives the transmission signal or relay instruction signal transmitted from mobile station 10 via antenna 121. Then, predetermined reception radio processing (for example, down-conversion, AZD conversion, etc.) is performed on the received transmission signal (reception signal) or relay instruction signal. The reception signal or relay instruction signal after the reception radio processing is output to demodulation section 123 and relay instruction extraction section 125.
- predetermined reception radio processing for example, down-conversion, AZD conversion, etc.
- Demodulation section 123 demodulates the received signal among the signals input from radio reception section 122.
- the error correction decoding unit 124 performs error correction decoding processing on the received signal demodulated by the demodulation unit 123.
- the received signal that has been subjected to the error correction decoding process by the error correction decoding unit 124 is output to the code key unit 126.
- the relay instruction extraction unit 125 extracts a relay instruction signal from the signals input from the wireless reception unit 122. Then, the extracted relay instruction signal is output to radio transmitting section 128. The relay instruction extraction unit 125 identifies and identifies an error correction code used for error correction coding processing performed on the received signal by referring to the instruction content indicated in the relay instruction signal. The encoded error correction code is notified to the encoding unit 126.
- the code unit 126 performs error correction coding processing on the received signal input from the error correction decoding unit 124 using the error correction code input from the relay instruction extraction unit 125.
- the received signal encoded by encoding section 126 is output to modulation section 127 as a relay signal.
- the modulation unit 127 modulates the relay signal input from the code key unit 126.
- the relay signal modulated by modulation section 127 is output to radio transmission section 128.
- Radio transmission section 128 performs predetermined transmission radio processing (for example, DZA conversion, up-conversion, etc.) on the relay instruction signal input from relay instruction extraction section 125. Then, the relay instruction signal after the transmission radio processing is transmitted from the antenna 121 to the base station 30. Radio transmission section 128 performs predetermined transmission radio processing on the relay signal input from modulation section 127. Then, the relay signal after the transmission radio processing is transmitted from the antenna 121 to the base station 30.
- predetermined transmission radio processing for example, DZA conversion, up-conversion, etc.
- the relay station 20 having the above configuration operates according to the flow shown as an example in FIG.
- relay instruction extraction section 125 extracts a relay instruction signal from the output signal of radio reception section 122 (Sl l l). At this time, the instruction content indicated in the relay instruction signal is referred to, and the error correction code to be used in the error correction encoding process is specified.
- the extracted relay instruction signal is relayed to the base station 30 (S112). That is, the extracted relay instruction signal is transmitted to the wireless transmission unit 128 and transmitted from the wireless transmission unit 128 to the base station 30 via the antenna 121.
- the transmission signal transmitted from the mobile station 10 is received by the radio reception unit 122 (S113).
- This signal is demodulated as a received signal by demodulator 123, decoded by error correction decoder 124, and output to code decoder 126 (S114).
- the received signal is encoded (S115).
- the error correction code specified in step S111 is used.
- the encoded received signal is output to modulation section 127 as a relay signal.
- the relay signal is modulated, then output to the wireless transmission unit 128, and transmitted from the wireless transmission unit 128 to the base station 30 (S116).
- the base station 30 includes an antenna 131, a radio receiver 132, a demodulator 133, an error A correction instruction decoding unit 134, a relay instruction extraction unit 135, an encoding unit 136, a modulation unit 137, and a wireless transmission unit 138.
- the encoding unit 136 encodes a transmission signal addressed to the mobile station 10.
- This transmission signal includes, for example, information (reception quality information) indicating the reception quality of the signal received from each relay station 20-1, 20-2.
- the reception quality of the signals received from the relay stations 20-1 and 20-2 is measured by a reception quality measuring unit (not shown).
- the transmission signal encoded by the encoding unit 136 is modulated by the modulation unit 137.
- the radio transmission unit 138 performs predetermined transmission radio processing (for example, DZA conversion, up-conversion, etc.) on the transmission signal modulated by the modulation unit 137.
- the transmission signal after transmission radio processing is transmitted to mobile station 10 via antenna 131 as a downlink signal.
- Radio receiving section 132 receives the relay signal or relay instruction signal transmitted from each of relay stations 20-1 and 20-2 via antenna 131. Then, predetermined reception radio processing (for example, down-conversion, AZD conversion, etc.) is performed on the received relay signal or relay instruction signal. The relay signal or relay instruction signal after reception radio processing is output to demodulation section 133 and relay instruction extraction section 135.
- predetermined reception radio processing for example, down-conversion, AZD conversion, etc.
- Demodulation section 133 receives a relay signal, more specifically, a relay signal received from relay station 20-1, and a relay signal received from relay station 20-2, among the signals input from radio reception section 132. , Demodulate each. Each demodulated relay signal is output to error correction decoding section 134
- the relay instruction extraction unit 135 extracts a relay instruction signal from the signals input from the wireless reception unit 132. Then, by referring to the instruction content indicated in the extracted relay instruction signal, the error correction code used for the error correction decoding process performed on the combined signal of the relay signal is specified, and the specified error correction code To the error correction decoding unit 134.
- the error correction decoding unit 134 combines the relay signal received from the relay station 20-1 and the relay signal received from the relay station 20-2, which are input from the demodulating unit 133, and generates a relay signal. To obtain a composite signal. Then, the combined signal is decoded using the error correction code notified from relay instruction extracting section 135 to obtain a received signal.
- Base station 30 having the above configuration operates according to the flow shown as an example in FIG. First, relay instruction extraction section 135 extracts a relay instruction signal from the output signal of radio reception section 132 (S121). At this time, the instruction content indicated in the relay instruction signal is referred to, and the error correction code to be used in the error correction decoding process is specified.
- the relay signal power transmitted from each relay station 20-1, 20-2 is received by radio reception section 132 (S122). These relay signals are demodulated in the demodulator 133 (S123). These relay signals are combined in error correction decoding section 134. As a result, a composite signal of the relay signal is obtained.
- the error correction decoding unit 134 decodes the combined signal of the relay signal (S124). In this decoding, the error correction code specified in step S121 is used.
- FIG. 8 An example of a common table is shown in Figure 8.
- the illustrated table T is held in the relay instruction unit 115 of the mobile station 10, the relay instruction extraction unit 125 of the relay stations 20-1, 202, and the relay instruction extraction unit 135 of the base station 30, respectively.
- Table T lists a plurality of patterns of combinations of error correction codes.
- Pattern # 1 is a pattern used when the number of relay stations is one.
- Patterns # 2 and # 3 are patterns used when the number of relay stations is two.
- Patterns # 4 to # 6 are These patterns are used when the number of relay stations is three, and patterns # 7 to # 10 are patterns used when there are several relay stations. As described above, since there are two relay stations 20-1 and 20-2 in this embodiment, in the operation example of the mobile communication system 1 described here, patterns # 2 and # 3 are Will be used.
- Pattern # 2 is error correction code a for the first transmission, error correction code b for the first retransmission (retransmission 1), error correction code c for the second retransmission (retransmission 2), and third time. It is specified that error correction code d is used for each retransmission (retransmission 3).
- Noturn # 3 is the error correction code e for the first transmission, the error correction code f for the first retransmission (retransmission 1), the error correction code g for the second retransmission (retransmission 2), and the third time. Resend (re In sending 3), it is specified that the error correction code h is used.
- the relay instruction unit 115 of the mobile station 10 determines the instruction content of the relay instruction signal.
- the table T is referred to, and the contents of instructions for each relay station 20-1 and 20-2 are determined.
- the instruction content for relay station 20-1 is the use of pattern # 2
- the instruction content for relay station 20-2 is the use of Noturn # 3.
- the mobile station 10 generates a relay instruction signal indicating these instruction contents.
- the generated relay instruction signal is transmitted to each relay station 20-1 and 20-2 in frame 1.
- each of relay station 20-1 and relay station 20-2 receives the relay instruction signal from mobile station 10 and transmits the received relay instruction signal to base station 30 in frame 2.
- the relay instruction extraction unit 125 of the relay station 20-1 refers to the instruction content of the received relay instruction signal and the table T, and identifies an error correction code used for encoding the transmission signal. Assuming that the current transmission by the mobile station 10 is the first transmission, the specified error correction code is the error correction code a.
- relay instruction extraction section 125 of relay station 20-2 refers to the instruction content of the received relay instruction signal and table T, and specifies an error correction code to be used for encoding the transmission signal. Assuming that the current transmission by the mobile station 10 is the first transmission, the specified error correction code is the error correction code e.
- Base station 30 receives relay instruction signals transmitted from relay stations 20-1 and 20-2, respectively.
- the relay instruction extraction unit 135 of the base station 30 refers to the instruction content of the received relay instruction signal and the table T, and specifies an error correction code used for decoding the relay signal. Assuming that the current transmission by the mobile station 10 is the first transmission, the error-correcting codes identified are the error-correcting code a and the error-correcting code e.
- the mobile station 10 transmits a transmission signal (S + P1) in the frame 3.
- S is an information bit of the transmission signal
- P1 is a parity bit added to the information bit S.
- the notification bit P1 is added to the information bit S by the error correction code key processing in the code key unit 116.
- Relay stations 20-1 and 20-2 each receive a transmission signal (S + P1) from mobile station 10. I believe.
- the code key unit 126 of the relay station 20-1 codes the information bit S of the transmission signal using the error correction code a specified above. As a result, a relay signal (S + P2) is generated. P2 is a NORITY bit different from P1.
- the code key unit 126 of the relay station 20-2 encodes the information bit S of the transmission signal using the error correction code e specified above. As a result, a relay signal (S + P1) is generated. Information bit S can be obtained by error correction decoding processing in error correction decoding section 124 of each relay station 20-1, 20-2.
- the relay instruction unit 115 of the mobile station 10 gives an instruction to add relay station 20-1 and relay station 20-2 to each of the relay signals generated by the relay stations 20-1 and 20-2. This means that the mobile station 10 has notified each relay station 20-1, 20-2.
- Relay station 20-1 transmits the generated relay signal (S + P2) to base station 30 in frame 4.
- Relay station 20-2 transmits the generated relay signal (S + P1) to base station 30 in frame 4.
- the base station 30 receives the relay signal (S + P1) and the relay signal (S + P2), respectively.
- the error correction decoding unit 134 of the base station 30 combines the relay signal (S + P1) and the relay signal (S + P2) to generate a combined signal (S + P1 + P2) of the relay signal.
- the combined signal (S + P1 + P2) of the relay signal is decoded using the error correction code a and the error correction code e identified earlier.
- the relay station 20-1 is instructed to add the NOTICE bit P2 to the transmission signal
- the relay station 20-2 is instructed to add the parity bit P1 to the transmission signal. Therefore, combining received signals performed on the receiving side (that is, the base station 30) can improve not only the power amplification effect but also error correction capability, and improve the error rate characteristics after combining. it can.
- the content of the instruction determined by the relay instruction unit 115 of the mobile station 10 is not limited to the above.
- an instruction to add a parity bit PA having a specific length to the transmission signal is determined and notified to the relay station 20-1, and the parity bit PB having a length different from the length of the parity bit PA is determined. It is also possible to determine an instruction to add to the transmission signal and notify this to the relay station 20-2.
- relay instruction section 115 The length of bit PA may be set shorter than the length of parity bit PB.
- an instruction to generate relay signal RS1 which is composed of information bits and parity bits and the ratio of the number of information bits is a specific value, is determined and notified to relay station 20-1, and the information bits and It is also possible to determine an instruction to generate a relay signal RS2 consisting of parity bits and having a ratio of the number of information bits different from that of the relay signal RS1, and to notify the relay station 20-2 of this.
- the relay instruction unit 115 relays the signal received by the base station 30 from the relay station 20-2.
- the ratio of the number of information bits in signal RS1 may be set higher than the ratio of the number of information bits in relay signal RS2.
- an instruction to generate a relay signal RSI having one power of information bits and parity bits is determined and notified to relay station 20-1, and relay signal RS2 having the other power of information bits and parity bits is also transmitted. It is also possible to determine an instruction to generate and notify the relay station 20-2 of this.
- the relay instruction unit 115 may be instructed to generate the relay signal RS1 having only the information bit power, and the relay station 20-2 may be instructed to generate the relay signal RS2 having only the power of the notation bit.
- the information bits can be relayed to a relay station with high reception quality.
- the relay instruction signal is generated and transmitted in the mobile station 10. However, even if the base station 30, the relay station 20, or a higher control station generates and transmits the relay instruction signal. Good.
- the above-described operational effect is realized in information transmission on the uplink by providing a radio transmission device in mobile station 10, but the radio transmission device is provided in base station 30.
- the above-described effects can be realized in information transmission on the downlink.
- the radio transmission apparatus according to the present embodiment can also be applied to relay station 20.
- FIG. 11 is a diagram showing the configuration of the mobile communication system according to Embodiment 2 of the present invention.
- the mobile communication system la in FIG. 11 has intermediate stations 20a-1 and 20a-2 in addition to the power of the mobile station 10 and the base station 30 described in the first embodiment.
- relay stations 20a-1, 20a-2 have the same internal configuration, when referring to any of relay stations 20a-1, 20a-2 in the following description, Say “Relay station 20a”. Further, relay station 20a has the same internal configuration as relay station 20 described in the first embodiment. Therefore, the same components as those described in Embodiment 1 are denoted by the same reference numerals, and detailed description thereof is omitted.
- the number of relay stations is set to "2", but the number of relay stations is one. But it can be 3 or more.
- the number of relay stations through which the transmission signal passes may be one, but in order to implement the present invention, the number of relay stations through which the transmission signal passes is preferably two or more. ,.
- the configuration of mobile station 10 of the present embodiment is the same as that described in Embodiment 1, the power of omitting the block diagram and the detailed description thereof is the same in mobile station 10 of the present embodiment.
- the following instruction content is added to the instruction determined by the instruction unit 115.
- the instruction content to be added is to generate a relay signal that is added to the transmission signal and added with a parity bit different from the normality bit.
- relay station 20a includes radio 121 in addition to antenna 121, relay instruction extraction unit 125, encoding unit 126, modulation unit 127, and radio transmission unit 128 described in the first embodiment.
- a receiving unit 222, a demodulating unit 223, an error correction decoding unit 224, a synthesis unit 225, a buffer unit 226, and an error detection unit 227 are included.
- Radio receiving section 222 receives the transmission signal or relay instruction signal transmitted from mobile station 10 via antenna 121. Then, predetermined reception radio processing (for example, down-conversion, AZD conversion, etc.) is performed on the received transmission signal (reception signal) or relay instruction signal. The reception signal or relay instruction signal after the reception radio processing is output to demodulation section 223 and relay instruction extraction section 125.
- predetermined reception radio processing for example, down-conversion, AZD conversion, etc.
- the radio reception unit 222 receives the relay signal transmitted from the other relay station 20a via the antenna 121. Then, predetermined reception radio processing is performed on the received relay signal. The relay signal after the reception radio processing is output to demodulation section 223.
- Demodulation section 223 demodulates the received signal among the signals input from radio reception section 222.
- the demodulation unit 223 demodulates the relay signal when the radio reception unit 222 can receive the relay signal transmitted from the other relay station 20a.
- the combining unit 225 stores the received signal demodulated by the demodulating unit 223 in the buffer unit 226 and outputs it to the error correction decoding unit 224.
- the combining unit 225 combines the relay signal demodulated by the demodulating unit 223 with the signal stored in the buffer unit 226 (buffer signal). Then, the synthesized signal is stored in the buffer unit 226 instead of the synthesized signal, and the synthesized signal is output to the error correction decoding unit 224.
- the noffer unit 226 stores the signal obtained by the synthesis unit 225. The stored signal is erased when no error is detected in error detection by the error detection unit 227.
- Error correction decoding section 224 performs error correction decoding processing on the signal input from combining section 225.
- the signal that has been subjected to the error correction decoding process by the error correction decoding unit 224 is output to the error detection unit 227.
- Error detection section 227 performs error detection on the signal that has been subjected to error correction decoding by error correction decoding section 224.
- error detection section 227 performs error detection using CRC (Cyclic Redundancy Check).
- CRC Cyclic Redundancy Check
- the error detection method that can be used is not limited to CRC, and vertical parity check, horizontal parity check, error code, ming code, etc. may be used instead.
- error detection section 227 demodulates the relay signal when a relay signal transmitted from other relay station 20a can be received. Instruct the demodulator 223. If no error is detected as a result of error detection (CRC: OK), the error detection unit 227 outputs a signal subjected to error correction decoding to the code unit 126 and also outputs it to the buffer unit 226. Discard the stored signal.
- the relay station 20a having the above configuration operates according to the flow shown as an example in FIG.
- relay instruction extraction section 125 extracts a relay instruction signal from the output signal of radio reception section 222 (S201). At this time, the instruction content indicated in the relay instruction signal is referred to, and the error correction code to be used in the error correction encoding process is specified.
- the extracted relay instruction signal is relayed to the base station 30 (S202). That is, the extracted relay instruction signal is transmitted to the wireless transmission unit 128 and transmitted from the wireless transmission unit 128 to the base station 30 via the antenna 121.
- the transmission signal transmitted from mobile station 10 is received by radio reception section 222 (S203).
- This signal is demodulated in the demodulator 223 as a received signal (S204).
- the demodulated received signal is stored in the notifier unit 226 (S205) and also decoded by the error correction decoding unit 224 (S206).
- the demodulated received signal is subjected to error detection processing in error detection section 227.
- an error is detected (S207: NO)
- an instruction is issued from error detection section 227 to demodulation section 223.
- the demodulator 223 can receive a relay signal transmitted from another relay station 20a (S208: YES), it demodulates the relay signal (S209).
- the other relay station 20a is unable to receive the transmitted relay signal (S208: NO)
- the relay process is terminated.
- the synthesis unit 225 synthesizes the signal stored in the nota unit 226 and the relay signal demodulated in step S209 (S210). The combined signal is decoded by error correction decoding section 224.
- the decoded combined signal is subjected to error detection processing in error detection section 227. If no error is detected (S211: YES), the process proceeds to step S213 described later. If an error is detected (S211: NO), the relay process ends.
- step S207 If no error is detected in the error detection in step S207 (S207: Y
- step S213 the signal input from error detection section 227 is converted into encoding section 1
- step S201 the error correction code specified in step S201 is used.
- the encoded signal is output to modulation section 127 as a relay signal.
- the relay signal is modulated and then output to the wireless transmission unit 128.
- FIG. 14 shows an example of the operation sequence of the mobile communication system la.
- a relay instruction signal is transmitted from mobile station 10 to relay stations 20a-1 and 20a-2.
- a medium thread indicating signal is transmitted to the base station 30 from the intermediate stations 20 a-1 and 20 a-2.
- the details of the operation in frames 1 and 2 are the same as those described in Embodiment 1 except for the contents of the instructions.
- the transmission signal (S + P1) is transmitted from mobile station 10 to relay stations 20a-1 and 20a-2.
- relay stations 20a-1 and 20a-2 each receive a transmission signal (S + P1) from mobile station 10.
- Each of error detection sections 227 of relay stations 20a-1 and 20a-2 detects errors in the received signal after decoding (that is, the transmission signal (S + P1) subjected to error correction decoding processing). I do.
- the relay station 20a-1 does not detect an error (CRC: OK), and the relay station 20a-2 detects an error (CRC: NG).
- information bit S of the transmission signal received by relay station 20a-1 is encoded, and is transmitted as a relay signal (S + P2) in frame 4.
- the information bit S of the transmission signal received by the relay station 20a-2 is not encoded and is not transmitted in frame 4.
- relay station 20a-2 receives the relay signal (S + P2) transmitted from relay station 20a-1. Then, the received intermediate I signal (S + P2) and the transmission signal (S + P1) received in frame 3 are combined.
- the error detection unit 227 of the relay station 20a-2 performs error detection on the combined signal that has been subjected to the error correction decoding process. In this example, no error is detected in the combined signal (CRC: OK).
- information bit S of the combined signal is encoded and transmitted as a relay signal (S + P3) in frame 5.
- P3 is a parity bit different from Pl and P2.
- an instruction to generate a relay signal to which parity bits P2, P3 different from parity bit P1 in a transmission signal transmitted from mobile station 10 is added is determined. Therefore, the relay signal with the parity bits P2 and P3 different from the parity bit P1 in the transmission signal is sent to each relay station 20a-1 and 20a-2. Generated by. For this reason, when one of the relay stations 20a-1 and 20a-2 cannot properly receive the transmission signal of the mobile station 10, the relay signal transmitted by the other relay station can be received. Therefore, since the transmission signal and the relay signal can be combined, the error correction effect can be realized in the relay stations 20a-1 and 20a-2, and the error correction effect of the entire system is improved. be able to.
- the relay instruction signal is generated and transmitted in mobile station 10, but relay station 20a may generate and transmit the relay instruction signal.
- the radio transmission apparatus according to the present embodiment can also be applied to relay station 20a.
- FIG. 15 shows the configuration of the mobile communication system according to Embodiment 3 of the present invention.
- the mobile communication system lb in FIG. 15 has intermediate stations 20b-1, 20b-2, and 20b-3 in addition to the power of the mobile station 10 and the base station 30 described in the first embodiment.
- relay stations 20b-1, 20b-2, and 20b-3 have the same internal configuration, the following explanation will be given. This is the description of intermediate stations 20b-1, 1, 20b-2, and 20b. Any one of the three is used to say “relay station 20b”. Further, relay station 20b has the same internal configuration as relay station 20 described in the first embodiment. Therefore, the same components as those described in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
- the number of relay stations is "3" for convenience, but the number of relay stations may be one, two, or four or more. Depending on the communication situation, there may be the number of relay stations through which the transmission signal passes, but in order to implement the present invention, the number of relay stations through which the transmission signal passes is preferably two or more. ,.
- a force using the mobile station 10 described in the first embodiment may be substituted.
- relay station 20b includes antenna 121, radio reception section 122, demodulation section 123, error correction decoding section 124, encoding section 126, modulation section 127, and the like described in Embodiment 1.
- radio transmission unit 128 an error correction code selection unit 321 and a channel specification unit 322 are provided.
- the error correction code selection unit 321 is assigned from a plurality of error correction codes prepared in advance. Select one of them at random. The selected error correction code is notified to the code channel unit 126 and the channel designating unit 322.
- the error correction code selection unit 321 may include, for example, the table T described in the first embodiment. In this case, the error correction code selection unit 321 can select an error correction code according to the patterns listed in the table T.
- Channel designation unit 322 designates a channel corresponding to the error correction code notified from error correction code selection unit 321 from among a plurality of channels. Then, the wireless transmission unit 128 is instructed to use the designated channel. Therefore, in the present embodiment, radio transmission section 128 transmits the relay signal using the channel specified by channel designation section 322. In this case, the relay instruction extraction unit 135 of the base station 30 specifies the error correction code V used for error correction decoding processing based on the channel used for transmission of the relay signal.
- Relay station 20b having the above configuration operates according to the flow shown as an example in FIG. First, the transmission signal transmitted from the mobile station 10 is received by the wireless reception unit 122 (S301). This signal is demodulated as a received signal by demodulator 123, decoded by error correction decoder 124, and output to code decoder 126 (S302).
- error correction code selection section 321 randomly selects one of a plurality of error correction codes prepared in advance, for example, error correction codes a to h (S303).
- the encoding unit 126 encodes the received signal using the error correction code selected in step S303 (S304).
- the encoded received signal is output to modulation section 127 as a relay signal.
- the relay signal is modulated by modulation section 127 and then output to radio transmission section 128.
- the channel designation unit 322 designates a transmission channel based on the error correction code selected in step S303 (S305). Specifically, the channel specifying unit 322 uses, for example, a table showing the correspondence between error correction codes and channels shown in FIG. For example, when the error correction code a is selected, the medium channel 1 of channels 1 to 8 is designated as a channel used for transmission. Each channel 1 to 8, for example, OFDM (Orthogonal Frequency Division Multiplexing) subcarrier, FDMA (Frequency Division Multiple Access) frequency band, CDMA (Code Division Multiple Access) spread code, Or, TDMA (Time Division Multiple Access) method It is a time band. Alternatively, a combination of these may be used for each channel 1-8.
- This table is also provided in the relay instruction extraction unit 135 of the base station 30.
- Radio transmitting section 128 transmits the modulated relay signal using the channel specified in step S305 (S306).
- a transmission signal (S + P1) is transmitted to each intermediate station 20b-1, 20b-2, and 20b-3 from 10 mobile stations!
- Each of relay stations 20b-1, 20b-2, and 20b-3 randomly selects an error correction code, and encodes a transmission signal (S + P1) with the selected error correction code.
- the error correction code selection unit 321 of the relay station 20b-1 selects the error correction code b
- the code unit 126 of the relay station 20b-1 uses the parity to the information bit S according to the error correction code b.
- Add bit P2 The error correction code selection unit 321 of the relay station 20b-2 selects the error correction code a
- the code unit 126 of the relay station 20b-2 converts the parity bit into the information bit S according to the error correction code a.
- Add P1 Further, the error correction code selection unit 321 of the relay station 20b-3 selects the error correction code a, and the code unit 126 of the relay station 20b-3 performs parity on the information bit S according to the error correction code a. Add bit P1.
- relay station 20b-1 transmits a relay signal (S + P2) using channel 2 corresponding to error correction code b, and relay stations 20b-2 and 20b-3 are Then, relay signal (S + P1) is transmitted using channel 1 corresponding to error correction code a.
- the base station 30 combines and relays the relay signals received from the relay stations 20b-1, 20b-2, and 20b-3.
- this embodiment [Koyore, Nakagawa station 20b-1, 20b-2, 20b-3, the relay signal is transmitted using the channel corresponding to the error correction code selected in 20b-1. Therefore, the same effect as in the first and second embodiments without using the relay instruction signal described in the second embodiment can be realized.
- the radio transmission apparatus is also applicable to relay station 20b.
- the error correction code selection unit 321 of the relay station 20b selects an error correction code without depending on the instruction content of the relay instruction signal transmitted by the mobile station 10, but the relay station The relay instruction signal received by the radio reception unit 122 of 20b is input to the error correction code selection unit 321.
- the error correction code selection unit 321 may select an error correction code according to the instruction content of the relay instruction signal. ⁇ ⁇ .
- the content of the instruction determined by the relay instruction unit 115 of the mobile station 10 is, for example, an error correction code selection method.
- One of the selection method options is, for example, the random selection described in the present embodiment.
- Another option is, for example, pattern selection using the table T described in the first embodiment.
- a plurality of random selection methods may be prepared in advance, and the mobile station 10 may designate one of the random selection methods.
- a plurality of tables in which a plurality of patterns are listed may be prepared, and the mobile station 10 may designate the use of any table.
- the mobile station 10 notifies the relay station 20b that random selection is not permitted in a situation where it is necessary to control the error correction code selected by the relay station 20b. Under the circumstances, the relay station 20b may be notified that the random selection is permitted, because it becomes necessary to control the selected error correction code.
- Each functional block used in the description of each of the above embodiments is typically realized as an LSI which is an integrated circuit. These may be individually made into one chip, or may be made into one chip so as to include a part or all of them.
- IC integrated circuit
- system LSI system LSI
- super LSI non-linear LSI
- non-linear LSI depending on the difference in power integration
- the method of circuit integration is not limited to LSI's, and implementation using dedicated circuitry or general purpose processors is also possible. You may use an FPGA (Field Programmable Gate Array) that can be programmed after manufacturing the LSI, or a reconfigurable processor that can reconfigure the connection and settings of the circuit cells inside the LSI.
- FPGA Field Programmable Gate Array
- the radio transmission apparatus and radio transmission method of the present invention can be applied to a base station apparatus, a mobile station apparatus, a relay station apparatus and the like used in a radio communication system such as a cellular mobile communication system.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI0606753-0A BRPI0606753A2 (pt) | 2005-01-31 | 2006-01-30 | aparelho de transmissão sem fio e método de transmissão sem fio |
EP06712622A EP1845635A4 (en) | 2005-01-31 | 2006-01-30 | WIRELESS TRANSMISSION APPARATUS AND WIRELESS TRANSMISSION METHOD |
JP2007500637A JP4688860B2 (ja) | 2005-01-31 | 2006-01-30 | 無線送信装置および無線送信方法 |
US11/814,999 US8000651B2 (en) | 2005-01-31 | 2006-01-30 | Wireless transmission apparatus and wireless transmission method |
CN2006800037283A CN101112014B (zh) | 2005-01-31 | 2006-01-30 | 无线发送装置以及无线发送方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005-022898 | 2005-01-31 | ||
JP2005022898 | 2005-01-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006080507A1 true WO2006080507A1 (ja) | 2006-08-03 |
Family
ID=36740524
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/301479 WO2006080507A1 (ja) | 2005-01-31 | 2006-01-30 | 無線送信装置および無線送信方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US8000651B2 (ja) |
EP (1) | EP1845635A4 (ja) |
JP (1) | JP4688860B2 (ja) |
CN (1) | CN101112014B (ja) |
BR (1) | BRPI0606753A2 (ja) |
WO (1) | WO2006080507A1 (ja) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008236244A (ja) * | 2007-03-19 | 2008-10-02 | Hitachi Kokusai Electric Inc | 移動中継伝送システム |
JP2010506477A (ja) * | 2006-10-02 | 2010-02-25 | 富士通株式会社 | 通信システム |
JP4800378B2 (ja) * | 2006-02-28 | 2011-10-26 | パナソニック株式会社 | 無線通信装置および中継送信方法 |
CN101878600B (zh) * | 2007-12-27 | 2013-03-13 | 上海贝尔股份有限公司 | 无线联合中继网络中控制信号传输的方法和装置 |
US8571468B2 (en) | 2005-06-17 | 2013-10-29 | Fujitsu Limited | Power controlled communication system between a source, repeater, and base station |
US8606176B2 (en) | 2005-06-17 | 2013-12-10 | Fujitsu Limited | Communication system |
US8681814B2 (en) | 2007-03-02 | 2014-03-25 | Fujitsu Limited | Wireless communication systems |
JP5464762B2 (ja) * | 2009-03-31 | 2014-04-09 | パナソニック株式会社 | 中継装置及び中継方法 |
US8705458B2 (en) | 2007-03-19 | 2014-04-22 | Fujitsu Limited | Wireless communication systems |
US8812043B2 (en) | 2005-06-17 | 2014-08-19 | Fujitsu Limited | Communication system |
US9414333B2 (en) | 2006-11-06 | 2016-08-09 | Fujitsu Limited | System and method for downlink and uplink parameter information transmission in a multi-hop wireless communication system |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4818045B2 (ja) * | 2006-09-28 | 2011-11-16 | 株式会社東芝 | 無線通信装置 |
WO2008108708A1 (en) * | 2007-03-06 | 2008-09-12 | Telefonaktiebolaget Lm Ericsson (Publ) | Improved retransmissions in a wireless communications system |
KR101109254B1 (ko) * | 2007-07-05 | 2012-01-30 | 삼성전자주식회사 | 데이터 와 map 정보를 비동기적으로 전송하는 데이터전송 시스템 |
US8279794B2 (en) * | 2008-09-24 | 2012-10-02 | Qualcomm Incorporated | Opportunistic data forwarding and dynamic reconfiguration in wireless local area networks |
KR101605325B1 (ko) * | 2009-08-28 | 2016-03-22 | 엘지전자 주식회사 | 인터리브 분할 다중접속 협력 다이버시티를 위한 수신기 및 그 전력할당 알고리즘 |
CN102348255B (zh) * | 2010-07-30 | 2016-07-06 | 中兴通讯股份有限公司 | 一种中继节点接入网络的方法和系统 |
US20120120890A1 (en) * | 2010-11-12 | 2012-05-17 | Electronics And Telecommunications Research Institute | Apparatus and method for transmitting multimedia data in multimedia service providing system |
US9249524B2 (en) * | 2011-08-31 | 2016-02-02 | Semiconductor Energy Laboratory Co., Ltd. | Manufacturing method of composite oxide and manufacturing method of power storage device |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001244864A (ja) * | 2000-02-29 | 2001-09-07 | Hitachi Ltd | 無線中継システム |
JP2002223188A (ja) * | 2001-01-26 | 2002-08-09 | Matsushita Electric Works Ltd | 電波リモコン |
JP2003229798A (ja) * | 2002-02-05 | 2003-08-15 | Hitachi Ltd | 無線中継システム |
JP2003244050A (ja) * | 2002-02-14 | 2003-08-29 | Hitachi Cable Ltd | 中継器の送信電力制御方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6078785A (en) * | 1996-10-15 | 2000-06-20 | Bush; E. William | Demand reporting of electricity consumption by radio in relays to a base station, and demand relays wattmeters so reporting over a wide area |
JP3652946B2 (ja) | 1999-12-28 | 2005-05-25 | 株式会社エヌ・ティ・ティ・ドコモ | 移動通信システムにおける通信方法及び移動局 |
JP4052835B2 (ja) | 2001-12-28 | 2008-02-27 | 株式会社日立製作所 | 多地点中継を行う無線伝送システム及びそれに使用する無線装置 |
US7216282B2 (en) * | 2003-02-19 | 2007-05-08 | Harris Corporation | Mobile ad-hoc network (MANET) including forward error correction (FEC), interleaving, and multi-route communication features and related methods |
CN100531167C (zh) * | 2003-05-28 | 2009-08-19 | 艾利森电话股份有限公司 | 使用中继的无线通信网络的方法和系统 |
-
2006
- 2006-01-30 BR BRPI0606753-0A patent/BRPI0606753A2/pt not_active IP Right Cessation
- 2006-01-30 US US11/814,999 patent/US8000651B2/en not_active Expired - Fee Related
- 2006-01-30 JP JP2007500637A patent/JP4688860B2/ja not_active Expired - Fee Related
- 2006-01-30 EP EP06712622A patent/EP1845635A4/en not_active Withdrawn
- 2006-01-30 CN CN2006800037283A patent/CN101112014B/zh not_active Expired - Fee Related
- 2006-01-30 WO PCT/JP2006/301479 patent/WO2006080507A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001244864A (ja) * | 2000-02-29 | 2001-09-07 | Hitachi Ltd | 無線中継システム |
JP2002223188A (ja) * | 2001-01-26 | 2002-08-09 | Matsushita Electric Works Ltd | 電波リモコン |
JP2003229798A (ja) * | 2002-02-05 | 2003-08-15 | Hitachi Ltd | 無線中継システム |
JP2003244050A (ja) * | 2002-02-14 | 2003-08-29 | Hitachi Cable Ltd | 中継器の送信電力制御方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1845635A4 * |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8571468B2 (en) | 2005-06-17 | 2013-10-29 | Fujitsu Limited | Power controlled communication system between a source, repeater, and base station |
US8812043B2 (en) | 2005-06-17 | 2014-08-19 | Fujitsu Limited | Communication system |
US8611814B2 (en) | 2005-06-17 | 2013-12-17 | Fujitsu Limited | Communication system |
US8606176B2 (en) | 2005-06-17 | 2013-12-10 | Fujitsu Limited | Communication system |
JP4800378B2 (ja) * | 2006-02-28 | 2011-10-26 | パナソニック株式会社 | 無線通信装置および中継送信方法 |
US8213356B2 (en) | 2006-10-02 | 2012-07-03 | Fujitsu Limited | Communication systems |
JP2010506477A (ja) * | 2006-10-02 | 2010-02-25 | 富士通株式会社 | 通信システム |
US9414333B2 (en) | 2006-11-06 | 2016-08-09 | Fujitsu Limited | System and method for downlink and uplink parameter information transmission in a multi-hop wireless communication system |
US8681814B2 (en) | 2007-03-02 | 2014-03-25 | Fujitsu Limited | Wireless communication systems |
JP2008236244A (ja) * | 2007-03-19 | 2008-10-02 | Hitachi Kokusai Electric Inc | 移動中継伝送システム |
US8705458B2 (en) | 2007-03-19 | 2014-04-22 | Fujitsu Limited | Wireless communication systems |
CN101878600B (zh) * | 2007-12-27 | 2013-03-13 | 上海贝尔股份有限公司 | 无线联合中继网络中控制信号传输的方法和装置 |
JP5464762B2 (ja) * | 2009-03-31 | 2014-04-09 | パナソニック株式会社 | 中継装置及び中継方法 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2006080507A1 (ja) | 2008-06-19 |
EP1845635A1 (en) | 2007-10-17 |
BRPI0606753A2 (pt) | 2009-07-14 |
JP4688860B2 (ja) | 2011-05-25 |
CN101112014A (zh) | 2008-01-23 |
US8000651B2 (en) | 2011-08-16 |
EP1845635A4 (en) | 2013-01-02 |
CN101112014B (zh) | 2011-04-06 |
US20090011702A1 (en) | 2009-01-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4688860B2 (ja) | 無線送信装置および無線送信方法 | |
US11121761B2 (en) | System and method for multiuser packets transmissions for relays | |
KR100834265B1 (ko) | 무선 통신 장치 및 무선 통신 방법 | |
USRE45171E1 (en) | Base station apparatus and communication method | |
US7970344B2 (en) | Wireless communication apparatus, wireless communication method and wireless communication system | |
US7929988B2 (en) | Radio reception apparatus and radio reception method | |
JP4898911B2 (ja) | 無線通信方法、無線通信装置、無線通信システム、および中継方法 | |
US8452229B2 (en) | Radio communication apparatus and relay transmission method | |
EP2088814A2 (en) | Radio relay station and radio terminal | |
US20110092154A1 (en) | Radio communication device | |
US20190181987A1 (en) | System and method for dual-coding transmissions for relays | |
JP4757908B2 (ja) | 無線通信装置および中継送信方法 | |
JP2019530999A (ja) | デュアルコーディングによるロバストなリレー再送 | |
JP2008193240A (ja) | 無線通信装置および無線通信方法 | |
JP2009081513A (ja) | 無線通信装置および無線通信方法 | |
KR101314564B1 (ko) | 중계국의 연관된 프로세싱 및 기지국의 대응하는 프로세싱을 위한 방법 및 장치 | |
KR101712230B1 (ko) | 다수의 무선 채널을 포함하는 무선 통신 방법, 및 그를 구현하는 무선 신호 리피터 및 이동국 장치 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2007500637 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 11814999 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2006712622 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 200680003728.3 Country of ref document: CN |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWP | Wipo information: published in national office |
Ref document number: 2006712622 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: PI0606753 Country of ref document: BR Kind code of ref document: A2 |