WO2011074808A2 - 다이버시티를 이용하여 채널을 구성하는 방법 및 장치 - Google Patents
다이버시티를 이용하여 채널을 구성하는 방법 및 장치 Download PDFInfo
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- 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
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0067—Rate matching
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0667—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal
- H04B7/0669—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal using different channel coding between antennas
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0697—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using spatial multiplexing
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- 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
- H04L1/0618—Space-time coding
- H04L1/0625—Transmitter arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
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- H04L25/03343—Arrangements at the transmitter end
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0008—Modulated-carrier systems arrangements for allowing a transmitter or receiver to use more than one type of modulation
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
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- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
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- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
- H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT the frequencies being arranged in component carriers
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- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
- H04L5/0035—Resource allocation in a cooperative multipoint environment
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- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0042—Intra-user or intra-terminal allocation
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
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- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
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- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L2025/03777—Arrangements for removing intersymbol interference characterised by the signalling
- H04L2025/03802—Signalling on the reverse channel
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- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0014—Three-dimensional division
- H04L5/0023—Time-frequency-space
Definitions
- the 3GPP LTE uplink control channel refers to a channel for transmitting information necessary for efficient communication of the uplink and downlink from the UE to the eNB and is defined as a physical uplink control channel (PUCCH).
- PUCCH physical uplink control channel
- 3GPP LTE-A the introduction of new technologies such as multi-user MIMO, Coordinated Multi-Point (CoMP) communication, and Carrier Aggregation (CA) are being considered, and the performance of uplink PUCCH is required according to the introduction of these new technologies.
- CoMP Coordinated Multi-Point
- CA Carrier Aggregation
- An object of the present invention is to provide a method and apparatus for configuring a channel using uplink diversity. More specifically, it is intended to provide an uplink performance improvement in 3GPP LTE-A.
- the information k bits to be transmitted are converted into n bits as sign bits. Converting, selecting m bits among the n bits, generating T modulation symbols in T transmission antennas for transmitting the m bits, and converting the T modulation symbols in the T transmission antennas into channel symbols And transmitting the modulated symbols, wherein the T transmit antennas generate T modulated symbols using different R resources.
- a method for configuring a channel using diversity includes converting the information k bits to be transmitted into n bits, which are code bits, in order to transmit predetermined information in a channel. Selecting one of the m bits, and generating one first modulation symbol by selecting one of different first resources and second resources to transmit the m bits, and generating the first modulation symbol by a second modulation symbol Generating using a resource not selected in the step, and transmitting the first modulation symbol at a first transmit antenna and transmitting the second modulation symbol at a second transmit antenna, wherein the two transmit antennas
- the m bit may be represented by the modulation symbol generated at and the mapping information of the resource used to generate the modulation symbol at the two antennas.
- An apparatus for configuring a channel using diversity includes a channel encoder for converting the information k bits to be transmitted to n bits, which are code bits, in order to transmit predetermined information in a channel. a modulation symbol mapping unit for selecting m bits among bits and generating T modulation symbols in T transmission antennas for transmitting the m bits, and transmitting the T modulation symbols as channel symbols in the T transmission antennas And a transmission unit, wherein the modulation symbol mapping unit generates T modulation symbols by using different R resources.
- an apparatus for configuring a channel using diversity includes: a channel encoder for converting information k bits to be transmitted into n bits, which are code bits, in order to transmit predetermined information in a channel; m bits are selected from n bits, one of different first resources and second resources are selected to transmit the m bits, and a first modulation symbol is generated, and a second modulation symbol is generated from the first modulation symbol.
- a modulation symbol mapping unit for generating using a non-selected resource, and a transmitter for transmitting the first modulation symbol in a first transmission antenna and transmitting the second modulation symbol in a second transmission antenna.
- the m bit may be represented by a modulation symbol generated by a transmitting antenna and mapping information of a resource used to generate the modulation symbol by the two antennas. It is characterized by being.
- a method for configuring a channel using diversity includes converting the information k bits to be transmitted to n bits, which are sign bits, in order to transmit predetermined information in a channel, and m bits of the n bits. Selecting T, generating T modulation symbols to be transmitted by the second energy less than the first energy consumed to transmit the entire m bits, and generating the T modulation symbols using T transmit antennas. And transmitting and consuming a second energy, wherein in generating the modulation symbols, the T transmission antennas generate T modulation symbols using different R resources.
- a method for receiving information using diversity receiving T modulation symbols transmitted by T transmission antennas of a base station consuming second energy, and demodulating the received modulation symbols.
- An apparatus for configuring a channel using diversity includes a channel encoder for converting the information k bits to be transmitted to n bits, which are code bits, in order to transmit predetermined information in a channel. a modulation symbol mapping unit for selecting m bits among the bits and generating T modulation symbols to be transmitted by second energy less than the first energy consumed to transmit the entire m bits, and T T modulation symbols And a transmitting unit transmitting the second energy using a transmitting antenna, wherein the modulation symbol mapping unit generates T modulation symbols by using different R resources.
- An apparatus for receiving information using diversity includes a receiver for receiving T modulation symbols transmitted by a second energy from T transmission antennas from a base station, and demodulating the received modulation symbols by m. a demodulator for calculating the information of the bit, and a decoder for decoding the n bit including the m bit to calculate the information k bit, wherein the second energy is greater than the first energy consumed to transmit the entire m bit. It is characterized by little.
- the present invention modulates a signal by using different resources in a plurality of antennas to generate a symbol, and also allows the matching information between a resource and an antenna to be used as information at a receiving side, thereby maximizing signal space.
- FIG. 1 is a diagram illustrating a process of generating a signal as shown in Table 1 below.
- FIG. 2 is a diagram illustrating a signal configuration using two antennas according to an embodiment of the present invention.
- FIG. 3 is a diagram illustrating a signal allocation process according to one embodiment of the present invention.
- FIG. 4 is a diagram illustrating a modulation scheme according to an embodiment of the present invention.
- FIG. 5 is a diagram illustrating a process of generating a modulation symbol according to an embodiment of the present invention.
- FIG. 6 illustrates an example of a configuration of a signal transmitted when m is 3 and two antennas are used, and each antenna is modulated by BPSK according to an embodiment of the present invention.
- FIG. 7 shows a signal configuration method according to another embodiment of the present invention.
- FIG. 8 shows a signal configuration method according to another embodiment of the present invention.
- FIG. 9 shows a signal configuration method according to another embodiment of the present invention.
- FIG. 10 is a diagram illustrating a configuration of three antennas according to an embodiment of the present invention.
- FIG. 11 is a diagram illustrating a configuration of generating modulation symbols so that three antennas according to an embodiment of the present invention select a matching between an antenna and a resource through bits of a specific position.
- FIG. 12 is a diagram showing the configuration of a signal when there are three antennas according to an embodiment of the present invention.
- FIG. 13 is a diagram illustrating an example in which a plurality of antennas overlap and transmits a symbol according to an embodiment of the present invention.
- FIG. 14 is a diagram illustrating an example in which a signal is configured such that a plurality of antennas may transmit a symbol by overlapping an antenna according to an embodiment of the present invention.
- 15 is a diagram illustrating a process of configuring a control channel using uplink diversity according to an embodiment of the present invention.
- FIG. 16 illustrates a process of configuring a control channel using uplink diversity according to another embodiment of the present invention.
- the present invention will be described for a wireless communication network, the operation performed in the wireless communication network is performed in the process of controlling the network and transmitting data in the system (for example, the base station) that is in charge of the wireless communication network, or the corresponding wireless Work may be done at the terminal coupled to the network.
- the information transmitted on the PUCCH which is an LTE uplink control channel, includes ACK / NAK information indicating whether to decode decoding in relation to HARQ, CQI / PMI / RI information indicating information on downlink channel status, and the like.
- Channel Quality Indicator (CQI), Precoding Matrix Indication (PMI), and Rank Indicator (RI) are all examples of information related to channel or data transmission. Such information may be periodically transmitted by the UE to the eNB.
- PUCCH can be divided into two types according to the amount of information to be transmitted. For example, there are types of 1 / 1a / 1b and 2 / 2a / 2b. It transmits the information and transmits information related to scheduling request (SR) or ACK / NAK information.
- SR scheduling request
- ACK / NAK information related to scheduling request (SR) or ACK / NAK information.
- the format of 2 / 2a / 2b carries a maximum of 13 bits of information and transmits CQI / PMI / RI and ACK / NAK information.
- SORM spatial orthogonal resource multiplexing
- the SORM method transmits signals by configuring resources and antennas in a two-dimensional form as shown in Table 1, but a method of simultaneously transmitting signals from two antennas is not considered.
- PAPR Peak to Average Power Ratio
- Table 1 It is an embodiment of transmitting so that odd and even signals are staggered on a resource with a value of. Therefore, in the SORM scheme, when the signal configuration is shown two-dimensionally at the resource and antenna levels, two antennas do not transmit a symbol at the same time, and thus there is a problem that the signal space cannot be sufficiently used.
- the channel encoder 110 generates (encodes) an information bit (k bit) of length k as an n bit code bit. N bits are generated by performing RM (rate matching) on these n bits as shown in 120, and then modulation symbols S 1 , S 2 , ..., S I are generated as shown in 130.
- modulation symbols of the PUCCH are spread by a cyclic shift sequence over 12 subcarriers, and are divided by users.
- LTE-A considers an increase in the amount of information bits allocated to PUCCH by assigning two or more sequences allocated to each user in LTE, and expresses the signal configuration in consideration of transmission antennas and spreading resources. It is expressed as
- each antenna distinguishes signals using different resources and simultaneously transmits 1 bit of new information. Therefore, both antennas transmit signals generated by resources having orthogonality to each other, and information can be decoded in consideration of the two signals and the resources transmitting the signals.
- the number of cases in which transmission is possible is two.
- the receiving side since the receiving side combines two pieces of information according to the first case and the second case, and information generated by combining S1 and S2, the information transmitted through the actual symbol can be obtained.
- the above information transmitted through the symbol means that 210 and 220, for example, means that one bit is additionally transmitted by resource-antenna mapping in addition to the number of bits transmitted through the actual symbol.
- Antennas in one embodiment of the present invention include the case of a physical or logical antenna.
- the SORM scheme in FIG. 1 provides a signal configuration in which no signals are transmitted from two antennas at the same time.
- the signal configuration of FIG. 2, which is an embodiment of the present invention can be extended in two forms, because 210 and 220 can be distinguished from the receiving side. Accordingly, one bit of additional code bit can be transmitted in each transmission period of the channel symbol. This additional bit transmission has the effect of improving the performance of the code by reducing the number of puncturing of the rate-matching algorithm.
- the structure of the SORM scheme may be extended to the channel symbol allocation scheme of selecting a resource and an antenna according to input bits and mapping modulation symbols in the SORM scheme of FIG. 1.
- FIG. 3 is a diagram illustrating a signal allocation process according to one embodiment of the present invention.
- the information of k bits to be transmitted is encoded into n bits through the channel encoding 310.
- the control information channel transmitted through the uplink according to an embodiment of the present invention is a PUCCH.
- the PUCCH 2 / 2a / 2b scheme may be used.
- An example of the channel encoding 310 may be a (20, A) code based on a Reed Muller code or an extended encoding combining the two.
- N may be a fixed number of bits.
- the rate-matching algorithm punctures or repeats n bits output from the channel encoder to fit the N value. If k, the number of information, is greater than or equal to 14, the number of 40-bit code bits is adjusted by puncturing.
- N bits are mapped to modulation symbols to generate modulation symbols, and a modulation scheme is determined according to a modulation order of modulation symbols.
- the code bits output from the rate-matching algorithm select resources and antennas according to pre-determined mapping rules in units of m bits, and determine modulation symbols to extend the SORM as shown in FIG. You can configure the method.
- the value of m is a method in which one bit of information is transmitted due to a difference (division) between 342 and 344 when two antennas are used. Therefore, the value of m is one larger than the modulation order mapped to the modulation symbol in the conventional SORM method.
- the channel encoder 310 converts the information k bits to be transmitted into n bits, which are code bits to be transmitted.
- a modulation symbol mapping unit 330 which selects m bits of the n bits and generates T modulation symbols from T transmission antennas for transmitting (md) bits of the m bits, and the T transmission antennas
- a transmitter for transmitting the generated modulation symbol as a channel symbol, wherein a d bit not included in the modulation symbol generation among the m bits is used to generate the modulation symbol at the T antennas.
- the n bits may be matched to N bits to select m bits among the N bits.
- a transmitting antenna is configured of a first antenna and a second antenna, and a modulation symbol mapping unit generates a modulation symbol to be transmitted by the first antenna using a first resource, and a second A resource is used to generate a modulation symbol for transmission in the second antenna.
- the first resource and the second resource have orthogonality.
- each of the four antennas may be configured to transmit a symbol modulated by two antennas with the same resource.
- the difference between (md) bit and mbit to be transmitted is d is less than or equal to log 2 (T!). This means that if the number of antennas T increases, the number of times the antenna can modulate the channel using different resources is T! This is because the bits represented by the value are integers less than or equal to log 2 (T!).
- the channel encoder, the modulation symbol mapping unit, and the transmission unit may be configured as follows.
- the channel encoder converts the information k bits to be transmitted into n bits, which are code bits to be transmitted.
- the modulation symbol mapping unit selects m bits of the n bits, selects one of a first resource or a second resource to transmit (m-1) bits of the m bits, and generates a first modulation symbol.
- the second modulation symbol is generated using a resource not selected in the process of generating the first modulation symbol.
- the n bits may be matched to N bits to select m bits among the N bits.
- the transmitter may transmit the first modulation symbol from the first transmission antenna and the second modulation symbol from the second transmission antenna.
- the first resource and the second resource may be configured to be orthogonal to each other so that channel symbols transmitted by two antennas can be distinguished from each other by a receiver. If there are four antennas and transmit the same channel symbol in duplicate, it is possible to transmit a modulated symbol with the same resource to the two antennas. Of course, depending on the communication situation, it is possible to transmit a modulated symbol with the same resource to the three antennas, and to transmit a modulated symbol from the other antenna to another resource.
- two antennas, three, four, according to an embodiment of the present invention is a view showing a process for transmitting a signal from a plurality of antennas at the same time.
- FIG. 4 is a diagram illustrating a modulation scheme according to an embodiment of the present invention.
- the same extended SORM scheme for each modulation scheme namely the configuration of constellations with a certain phase shift, such as binary phase-shift keying (BPSK) 410 and quadrature phase-shift keying (QPSK) 420 Applicable to
- BPSK binary phase-shift keying
- QPSK quadrature phase-shift keying
- various modulations such as 16QAM (Quadrature amplitude modulation) and 64QAM may be possible, and the present invention is not limited to this modulation scheme.
- FIG. 5 is a diagram illustrating a process of generating a modulation symbol according to an embodiment of the present invention.
- a matching of a resource and an antenna is selected using a specific bit.
- m bit is input (510)
- m bit is divided into m1, m2, and 1 bit.
- One bit is used to select a resource and an antenna, such as 520.
- Resource means spread resource for modulation symbol. The number of two cases may come out according to the resource and the antenna, which has been described with reference to 342 and 344 of FIG. 3.
- FIG. 6 illustrates an example of a configuration of a signal transmitted when m is 3 and two antennas are used, and each antenna is modulated by BPSK according to an embodiment of the present invention.
- BPSK bit-to-semiconductor
- FIG. 5 when m is 3 and two antennas are used, 1 bit is information that can be interpreted by the receiver according to the antenna and resource selection method, and thus, information about the remaining 2 bits is transmitted.
- the following shows an example of the configuration of modulation symbols allocated for each antenna resource. 6 is configured to minimize bit errors caused by symbol errors based on gray mapping.
- reference numeral 610 configures a signal for each input bit.
- Antenna 2 selects methods 625, 626, 627, and 628 for generating modulation symbols with resource x.
- the receiver may interpret m bits by using the symbols and the regions to which the symbols are mapped as a whole.
- m is 4 bits. Since there are two antennas, it can be implemented to be distinguishable as 1 bit as described above. In FIG. 7, the first bit is distinguished as in FIG. 6. The remaining 3 bits of information can be provided through modulation. Since it is 3 bits, it can be divided into 1 bit (BPSK) and 2 bit (QPSK), and generates QPSK symbols for each 2 bits, and combines them to form information. can do.
- symbols and information may be matched by separating BPSK and QPSK for 1 bit and 2 bits, but symbols and information may be matched by determining the total.
- BPSK 1 bit
- QPSK 2 bit
- both antennas generate 3 bits of information using QPSK, and the first 1 bit shows a method of transmitting the antenna and resource selection information.
- a portion (symbol) in which the actual energy is loaded among the 4 bits of information transmitted represents 3 bits, but a total of 4 bits of information is transmitted including the location where such energy is included.
- 710 is an example of configuring a signal for each input bit.
- a method 722 of generating a modulation symbol is selected. Each of the antennas 711 and 722 selects a specific symbol among M 0 , M 1 , M 2 , and M 3 , and the selection is configured according to 710.
- the antenna 1 is a BPSK
- the antenna 2 is demodulated by the QPSK scheme
- m1 may be configured to 1bit
- m2 is 2bit, which can be variously applied in the present invention.
- m is 5 bits.
- a signal configuration in which the first bit is selected as a resource-antenna selection and the remaining four bits are modulated.
- a method 822 of generating a modulation symbol is selected. In 811 and 822, each antenna selects a specific symbol among M 0 , M 1 , M 2 , and M 3 , and the selection is configured according to 810.
- a symbol and a region to which a symbol is mapped may be interpreted by the receiving side.
- FIG. 9 shows a signal configuration method according to another embodiment of the present invention.
- m is 4 bits and shows another example of gray mapping.
- FIG. 9 is a method of modulating 4 bits as shown in FIG. 7, but is not a method of matching an antenna and a resource through a specific bit. 6, 7, and 8, as in the configuration of FIG. 5, 1-bit information indicating the selection of an antenna and a resource is distinguished at a constant bit position.
- FIG. 9 may be configured of all mapping bits instead of specific bits in the mapping process.
- the modulation symbol allocation scheme in the extended SORM scheme can be configured in various ways.
- the receiving side spread resource information (x or y) for the modulation symbol sent from the first antenna as mapping information and spread resource for the modulation symbol sent from the second antenna.
- (x or y) 4 bits of information can be recovered.
- the embodiment of FIG. 9 enables multi-dimensional transmission in symbol transmission, which includes new information between symbol and resource matching and resource information, which also has an effect of receiving information on the receiving side.
- FIG. 10 is a diagram illustrating a configuration of three antennas according to an embodiment of the present invention.
- N there are N antennas and each antenna wants to spread to different resources.
- N There are ways of doing things.
- the above-described m bits are transmitted including all parts in which each antenna transmits a symbol by matching resources.
- FIG. 11 is a diagram illustrating a configuration of generating modulation symbols so that three antennas according to an embodiment of the present invention select a matching between an antenna and a resource through bits of a specific position. As shown in FIG. 10, four antenna-resource matching is selected from six antenna-resource matching so that 2 bits of information can be represented by the configuration of the antenna. In accordance with an embodiment of the present invention, 1010, 1020, 1050, and 1060 of FIG. 10 are selected.
- FIG. 12 is a diagram showing the configuration of a signal when there are three antennas according to an embodiment of the present invention. As shown in FIG. 10, four antenna-resource matching is selected from six antenna-resource matching so that 2 bits of information can be represented by the configuration of the antenna. In accordance with an embodiment of the present invention, 1010, 1020, 1050, and 1060 of FIG. 10 are selected.
- FIG. 13 is a diagram illustrating an example in which a plurality of antennas overlap and transmits a symbol according to an embodiment of the present invention.
- FIG. 13 two antennas among four antennas are spread with the same resource. Therefore, the implementation of the two antennas described above is the same. 1310 of FIG. 13 overlaps the configuration of 342 of FIG. 3, and 1320 overlaps the configuration of 344 of FIG. 3. Therefore, according to this configuration, it is possible to match the antenna and resources in 1 bit.
- FIG. 14 is a diagram illustrating an example in which a signal is configured such that a plurality of antennas may transmit a symbol by overlapping an antenna according to an embodiment of the present invention.
- FIG. 14 is configured to transmit the signal configuration of FIG. 6 in duplicate.
- the present invention is not limited to the one-to-one matching between the antenna and the resource described above.
- FIG. 14 it can be seen that there is a one-to-many relationship between antennas and resources (when two antennas include a symbol in one resource).
- 15 is a diagram illustrating a process of configuring a control channel using uplink diversity according to an embodiment of the present invention.
- the information k bits to be transmitted are converted into n bits, which are code bits to be transmitted (S1510). Then, m bits are selected among the n bits, and T modulation symbols are generated by T transmission antennas to transmit (m-d) bits of the m bits (S1520). The generated modulation symbols are transmitted through the T transmit antennas (S1530). At this time, the d bit which is not included in the modulation symbol generation among the m bits is information distinguishable by resources used for generating the modulation symbols in the T antennas. This has been described in the example of displaying information of 1 bit or more in a method of matching an antenna and a resource. After the transmission is completed, it is checked whether all n bits to be transmitted have been transmitted (S1540). If not all have been transmitted, step S1520 is performed to transmit the next m bit. If all have been sent, complete.
- step S1520 when the transmitting antenna is composed of the first antenna and the second antenna, step S1520 generates a modulation symbol to be transmitted by the first antenna using a first resource, and at the second antenna using a second resource A modulation symbol to be transmitted is generated, and the first resource and the second resource have orthogonality.
- step S1520 uses the first resource and the first antenna and the first antenna.
- the modulation symbols to be transmitted by the second antenna may be generated, and the modulation symbols to be transmitted by the third and fourth antennas may be generated by using the second resource, thereby generating overlapping modulation symbols.
- the first resource and the second resource is orthogonal.
- the actual modulation symbol transmits (md) bits of less information than the m bits to be transmitted.
- the missing information is information that can be delivered by matching the antenna and the resource, and d may have an integer value less than or equal to log 2 (T!).
- the process may include converting k bits to n bits through channel encoding in step S1510.
- the bit matching may be performed through the Reed Muller encoding or the TCC encoding, and the rate matching may be performed.
- m bits may be selected from the N bits by lattice-matching the n bits to N bits.
- the information k bits to be transmitted are converted into n bits, which are code bits to be transmitted, and m of the n bits.
- a bit may be selected, and a first modulation symbol may be generated by selecting one of the first resource and the second resource to transmit the (m-1) bit among the m bits.
- the second modulation symbol is generated using a resource not selected in the step (b)
- the first modulation symbol is transmitted by the first transmission antenna and the second modulation symbol is transmitted by the second transmission antenna.
- the first resource and the second resource are orthogonal to each other.
- the first modulation symbol is transmitted by the first transmission antenna and the second transmission antenna and the second modulation symbol is transmitted by the third transmission antenna and the fourth transmission antenna in order to transmit a signal redundantly can do.
- the control channel in FIG. 15 may be a PUCCH, and the control information may be any one of CPI, PMI, RI, ACK, and NAK.
- FIG. 16 illustrates a process of configuring a control channel using uplink diversity according to another embodiment of the present invention.
- a process including both the bit allocation process of FIG. 15 and the bit allocation process of FIG. 9 is shown.
- the information k bits to be transmitted are converted into n bits, which are code bits to be transmitted (S1610). Then, m bits are selected among the n bits, and T modulation symbols are generated by T transmission antennas to transmit the m bit information (S1620).
- the modulation symbols generated in step S1620 are transmitted through the T transmit antennas (S1630).
- the T transmission antennas In this case, in order to generate the modulation symbols generated by the T transmission antennas and the modulation symbols in the T antennas, the T transmission antennas generate T modulation symbols using different R resources. After the transmission is completed, it is checked whether all n bits to be transmitted have been transmitted (S1640). If not all have been transmitted, the process proceeds to step S1720 to transmit the next m bit. If all have been sent, complete.
- R may be greater than or equal to T / 2.
- the m bit information may be expressed through mapping information using R resources in the T modulation symbols and the T antennas.
- Mapping information as described above, means mapping information on which resource is used by the antenna. The combination of the mapping information and the modulation symbol generated at each antenna may configure a signal as a channel symbol as shown in FIGS. 6, 7, 8, and 9.
- the number of information distinguishable by the modulation symbols generated by the T transmit antennas and the resources used to generate the modulation symbols by the T antennas is equal to or greater than 2 m .
- the decoding process at the receiving end of the uplink diversity signal transmitted in the uplink is as follows.
- the uplink diversity signal according to an embodiment of the present invention received by a plurality of reception antennas at a base station is de-spreaded by a cyclic shift sequence allocated for each received antenna. .
- the despreaded signal has a channel value for each resource, and each element and the Euclidean distance of the channel symbol set are calculated in association with the channel coefficient value estimated by the reference signal.
- Each Euclidean distance is calculated as the sum of Euclidean distances calculated at each receiving antenna for each element.
- the signal (element) with the smallest Euclidean value is selected and this enters the input of the channel decoder.
- the channel decoder decodes an information bit block (or payload) as many as the size of the used resource, compared to the conventional case where a single resource is used.
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Abstract
Description
Claims (24)
- 채널에서 소정의 정보를 송신하기 위하여 상기 송신하고자 하는 정보 k bit를 부호 비트인 n bit로 변환하는 단계;상기 n bit 중 m bit를 선택하며, 상기 m bit를 전송하기 위해 T 개의 송신 안테나에서 T개의 변조 심볼을 생성하는 단계; 및상기 T개의 송신 안테나에서 상기 T개의 변조 심볼을 채널 심볼로 송신하는 단계를 포함하며,상기 변조 심볼을 생성하는 단계에서 상기 T개의 송신 안테나는 서로 다른 R개의 리소스를 사용하여 T개의 변조 심볼을 생성하는 것을 특징으로 하는, 다이버시티를 이용하여 채널을 구성하는 방법.
- 제 1항에 있어서,상기 R은 T/2보다 크거나 같은 것을 특징으로 하는, 다이버시티를 이용하여 채널을 구성하는 방법.
- 제 1항에 있어서,상기 T개의 변조 심볼 및 상기 T개의 안테나에서 R개의 리소스를 사용하는 매핑 정보를 통해 상기 m bit를 표현할 수 있는 것을 특징으로 하는, 다이버시티를 이용하여 채널을 구성하는 방법.
- 제 1항에 있어서,상기 T개의 안테나에서 생성하는 T개의 변조 심볼은 상기 m bit 중 (m-d)bit를 구별하기 위한 것이며, 상기 d bit는 상기 T개의 안테나에서 상기 변조 심볼을 생성하기 위해 사용한 리소스에 의해 구별가능한 정보인 것을 특징으로 하는, 다이버시티를 이용하여 채널을 구성하는 방법.
- 제 4항에 있어서,상기 d 는 log2(R!) 보다 작거나 같은 것을 특징으로 하는, 다이버시티를 이용하여 채널을 구성하는 방법.
- 제 1항에 있어서,상기 T, R이 2이며, 송신 안테나가 제 1 안테나 및 제 2 안테나로 구성되는 경우, 상기 변조 심볼을 생성하는 단계는제 1 리소스를 사용하여 상기 제 1 안테나에서 송신할 변조 심볼을 생성하는 단계; 및,제 2 리소스를 사용하여 상기 제 2 안테나에서 송신할 변조 심볼을 생성하는 단계를 포함하며,상기 제 1 리소스 및 상기 제 2 리소스는 직교성을 가지는, 다이버시티를 이용하여 채널을 구성하는 방법.
- 제 1항에 있어서,상기 채널은 PUCCH이며, 상기 정보는 CPI, PMI, RI, ACK, NAK 중 어느 하나인 것을 특징으로 하는, 다이버시티를 이용하여 채널을 구성하는 방법.
- 채널에서 소정의 정보를 송신하기 위하여, 상기 송신하고자 하는 정보 k bit를 부호 비트인 n bit로 변환하는 단계;상기 n bit 중 m bit를 선택하며, 상기 m bit를 전송하기 위해 서로 다른 제 1 리소스와 제 2 리소스 중 하나를 선택하여 제 1 변조 심볼을 생성하는 단계;제 2 변조 심볼을 상기 제 1 변조 심볼을 생성하는 단계에서 선택되지 않은 리소스를 사용하여 생성하는 단계; 및상기 제 1 변조 심볼을 제 1 송신 안테나에서 송신하고 상기 제 2 변조 심볼을 제 2 송신 안테나에서 송신하는 단계를 포함하며,상기 2 개의 송신 안테나에서 생성된 변조 심볼 및 상기 2 개의 안테나에서 상기 변조 심볼을 생성하기 위해 사용한 리소스의 매핑 정보에 의해 상기 m bit를 나타낼 수 있는 것을 특징으로 하는, 다이버시티를 이용하여 채널을 구성하는 방법.
- 제 8항에 있어서,상기 2 개의 안테나에서 생성하는 2 개의 변조 심볼은 상기 m bit 중 (m-1)bit를 구별하기 위한 것이며, 상기 1 bit는 상기 2 개의 안테나에서 상기 변조 심볼을 생성하기 위해 사용한 리소스에 의해 구별가능한 정보인 것을 특징으로 하는, 다이버시티를 이용하여 채널을 구성하는 방법.
- 채널에서 소정의 정보를 송신하기 위하여 상기 송신하고자 하는 정보 k bit를 부호 비트인 n bit로 변환하는 채널 부호화부;상기 n bit 중 m bit를 선택하며, 상기 m bit를 전송하기 위해 T 개의 송신 안테나에서 T개의 변조 심볼을 생성하는 변조 심볼 사상부; 및상기 T개의 송신 안테나에서 상기 T개의 변조 심볼을 채널 심볼로 송신하는 송신부를 포함하며;상기 변조 심볼 사상부는 상기 T개의 송신 안테나는 서로 다른 R개의 리소스를 사용하여 T개의 변조 심볼을 생성하는 것을 특징으로 하는, 다이버시티를 이용하여 채널을 구성하는 장치.
- 제 10항에 있어서,상기 R은 T/2보다 크거나 같은 것을 특징으로 하는, 다이버시티를 이용하여 채널을 구성하는 장치.
- 제 10항에 있어서,상기 T개의 변조 심볼 및 상기 T개의 안테나에서 R개의 리소스를 사용하는 매핑 정보를 통해 상기 m bit를 표현할 수 있는 것을 특징으로 하는, 다이버시티를 이용하여 채널을 구성하는 장치.
- 제 10항에 있어서,상기 T개의 안테나에서 생성하는 T개의 변조 심볼은 상기 m bit 중 (m-d)bit를 구별하기 위한 것이며, 상기 d bit는 상기 T개의 안테나에서 상기 변조 심볼을 생성하기 위해 사용한 리소스에 의해 구별가능한 정보인 것을 특징으로 하는, 다이버시티를 이용하여 채널을 구성하는 장치.
- 제 13항에 있어서,상기 d 는 log2(R!) 보다 작거나 같은 것을 특징으로 하는, 다이버시티를 이용하여 채널을 구성하는 장치.
- 제 10항에 있어서,상기 T, R이 2이며, 송신 안테나가 제 1 안테나 및 제 2 안테나로 구성되는 경우, 상기 변조 심볼 생성부는제 1 리소스를 사용하여 상기 제 1 안테나에서 송신할 변조 심볼을 생성하며;제 2 리소스를 사용하여 상기 제 2 안테나에서 송신할 변조 심볼을 생성하며,상기 제 1 리소스 및 상기 제 2 리소스는 직교성을 가지는, 다이버시티를 이용하여 채널을 구성하는 장치.
- 제 10항에 있어서,상기 채널은 PUCCH이며, 상기 정보는 CPI, PMI, RI, ACK, NAK 중 어느 하나인 것을 특징으로 하는, 다이버시티를 이용하여 채널을 구성하는 장치.
- 채널에서 소정의 정보를 송신하기 위하여, 상기 송신하고자 하는 정보 k bit를 부호 비트인 n bit로 변환하는 채널 부호화부;상기 n bit 중 m bit를 선택하며, 상기 m bit를 전송하기 위해 서로 다른 제 1 리소스와 제 2 리소스 중 하나를 선택하여 제 1 변조 심볼을 생성하며, 제 2 변조 심볼을 상기 제 1 변조 심볼의 생성시 선택되지 않은 리소스를 사용하여 생성하는 변조 심볼 사상부; 및상기 제 1 변조 심볼을 제 1 송신 안테나에서 송신하고 상기 제 2 변조 심볼을 제 2 송신 안테나에서 송신하는 송신부를 포함하며,상기 2 개의 송신 안테나에서 생성된 변조 심볼 및 상기 2 개의 안테나에서 상기 변조 심볼을 생성하기 위해 사용한 리소스의 매핑 정보에 의해 상기 m bit를 나타낼 수 있는 것을 특징으로 하는, 다이버시티를 이용하여 채널을 구성하는 장치.
- 제 17항에 있어서,상기 2 개의 안테나에서 생성하는 2 개의 변조 심볼은 상기 m bit 중 (m-1)bit를 구별하기 위한 것이며, 상기 1 bit는 상기 2 개의 안테나에서 상기 변조 심볼을 생성하기 위해 사용한 리소스에 의해 구별가능한 정보인 것을 특징으로 하는, 다이버시티를 이용하여 채널을 구성하는 장치.
- 채널에서 소정의 정보를 송신하기 위하여 상기 송신하고자 하는 정보 k bit를 부호 비트인 n bit로 변환하고 상기 n bit 중 m bit를 선택하는 단계;상기 m bit 전체를 송신하는데 소모되는 제 1 에너지보다 적은 제 2 에너지에 의해 송신될 변조 심볼을 T 개 생성하는 단계; 및상기 T 개의 변조 심볼을 T개의 송신 안테나를 이용하여 상기 제 2 에너지를 소모하여 송신하는 단계를 포함하며,상기 변조 심볼을 생성하는 단계에서 상기 T개의 송신 안테나는 서로 다른 R개의 리소스를 사용하여 T개의 변조 심볼을 생성하는 것을 특징으로 하는, 다이버시티를 이용하여 채널을 구성하는 방법.
- 제 19항에 있어서,상기 제 2 에너지는 상기 m bit 중 (m-d) bit를 송신하는데 소모되는 에너지이며, 상기 d bit는 상기 T개의 안테나에서 상기 변조 심볼을 생성하기 위해 사용한 리소스에 의해 구별가능한 정보인 것을 특징으로 하는, 다이버시티를 이용하여 채널을 구성하는 방법.
- 기지국의 T개의 송신 안테나가 제 2 에너지를 소모하며 송신하는 T개의 변조 심볼을 수신하는 단계;상기 수신한 변조 심볼을 복조하여 m bit의 정보를 산출하는 단계; 및상기 m bit를 포함하는 n bit를 복호화하여 정보 k bit를 산출하는 단계를 포함하며,상기 제 2 에너지는 상기 m bit 전체를 송신하는데 소모되는 제 1 에너지보다 적은 것을 특징으로 하는, 다이버시티를 이용하여 정보를 수신하는 방법.
- 제 21항에 있어서,상기 제 2 에너지는 상기 m bit 중 (m-d) bit를 송신하는데 소모되는 에너지이며, 상기 d bit는 상기 T개의 안테나에서 상기 변조 심볼을 생성하기 위해 사용한 리소스에 의해 구별가능한 정보인 것을 특징으로 하는, 다이버시티를 수신하는 방법.
- 채널에서 소정의 정보를 송신하기 위하여 상기 송신하고자 하는 정보 k bit를 부호 비트인 n bit로 변환하는 채널 부호화부;상기 n bit 중 m bit를 선택하며, 상기 m bit 전체를 송신하는데 소모되는 제 1 에너지보다 적은 제 2 에너지에 의해 송신될 변조 심볼을 T 개 생성하는 변조 심볼 사상부; 및상기 T 개의 변조 심볼을 T개의 송신 안테나를 이용하여 상기 제 2 에너지로 송신하는 송신부를 포함하며,상기 변조 심볼 사상부는 상기 T개의 송신 안테나는 서로 다른 R개의 리소스를 사용하여 T개의 변조 심볼을 생성하는 것을 특징으로 하는, 다이버시티를 이용하여 채널을 구성하는 장치.
- 기지국으로부터 T개의 송신 안테나에서 제 2 에너지로 송신하는 T개의 변조 심볼을 수신하는 수신부;상기 수신한 변조 심볼을 복조하여 m bit의 정보를 산출하는 복조부; 및상기 m bit를 포함하는 n bit를 복호화하여 정보 k bit를 산출하는 복호화부를 포함하며,상기 제 2 에너지는 상기 m bit 전체를 송신하는데 소모되는 제 1 에너지보다 적은 것을 특징으로 하는, 다이버시티를 이용하여 정보를 수신하는 장치.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/515,626 US20120257689A1 (en) | 2009-12-14 | 2010-12-03 | Method and apparatus for configuring a channel using diversity |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2009-0124245 | 2009-12-14 | ||
| KR1020090124245A KR20110067594A (ko) | 2009-12-14 | 2009-12-14 | 다이버시티를 이용하여 채널을 구성하는 방법 및 장치 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2011074808A2 true WO2011074808A2 (ko) | 2011-06-23 |
| WO2011074808A3 WO2011074808A3 (ko) | 2011-11-10 |
Family
ID=44167821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2010/008608 Ceased WO2011074808A2 (ko) | 2009-12-14 | 2010-12-03 | 다이버시티를 이용하여 채널을 구성하는 방법 및 장치 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20120257689A1 (ko) |
| KR (1) | KR20110067594A (ko) |
| WO (1) | WO2011074808A2 (ko) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9356663B2 (en) | 2011-12-02 | 2016-05-31 | Samsung Electronics Co., Ltd. | Apparatus and method for providing diversity service antenna in portable terminal |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013023170A1 (en) * | 2011-08-11 | 2013-02-14 | Research In Motion Limited | Orthogonal resource selection transmit diversity and resource assignment |
| CN103814539B (zh) | 2011-09-08 | 2017-04-12 | 太阳专利托管公司 | 信号生成方法及信号生成装置 |
| EP3032902B1 (en) * | 2013-09-12 | 2021-09-01 | Huawei Technologies Co., Ltd. | Information obtaining method, terminal, base station and system |
| US10050683B2 (en) * | 2015-08-14 | 2018-08-14 | Mediatek Inc. | Signal modulation and demodulation for multiuser superposition transmission scheme |
| TWI844612B (zh) * | 2019-01-09 | 2024-06-11 | 美商內數位專利控股公司 | 實施具有增強可靠性的傳輸及接收方案的方法及無線傳輸/接收單元 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100326314B1 (ko) * | 1998-08-03 | 2002-06-24 | 윤종용 | 이동통신시스템의기지국에서송신전력을제한하기위한송신스위칭다이버시티송신장치및방법 |
| KR100575929B1 (ko) * | 2003-05-29 | 2006-05-02 | 삼성전자주식회사 | 이동 통신 시스템에서 다중 안테나 다이버시티 방식을사용하여 데이터를 송수신하는 장치 및 방법 |
| US7583745B2 (en) * | 2003-12-03 | 2009-09-01 | Nokia Corporation | Exploiting selection diversity in communications systems with non-orthonormal matrix and vector modulation |
| KR100922959B1 (ko) * | 2005-03-29 | 2009-10-22 | 삼성전자주식회사 | 다중 안테나 시스템에서의 자원 스케줄링 장치 및 방법 |
| US8553627B2 (en) * | 2009-10-02 | 2013-10-08 | Sharp Laboratories Of America, Inc. | Transmission diversity scheme on physical uplink control channel (PUCCH) with ACK/NACK differentiation |
-
2009
- 2009-12-14 KR KR1020090124245A patent/KR20110067594A/ko not_active Withdrawn
-
2010
- 2010-12-03 WO PCT/KR2010/008608 patent/WO2011074808A2/ko not_active Ceased
- 2010-12-03 US US13/515,626 patent/US20120257689A1/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9356663B2 (en) | 2011-12-02 | 2016-05-31 | Samsung Electronics Co., Ltd. | Apparatus and method for providing diversity service antenna in portable terminal |
| US11888568B2 (en) | 2011-12-02 | 2024-01-30 | Samsung Electronics Co., Ltd. | Apparatus and method for providing diversity service antenna in portable terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| US20120257689A1 (en) | 2012-10-11 |
| WO2011074808A3 (ko) | 2011-11-10 |
| KR20110067594A (ko) | 2011-06-22 |
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