WO2012097669A1 - Procédé et terminal pour transmettre des signaux de commande sur la liaison montante - Google Patents

Procédé et terminal pour transmettre des signaux de commande sur la liaison montante Download PDF

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Publication number
WO2012097669A1
WO2012097669A1 PCT/CN2011/084909 CN2011084909W WO2012097669A1 WO 2012097669 A1 WO2012097669 A1 WO 2012097669A1 CN 2011084909 W CN2011084909 W CN 2011084909W WO 2012097669 A1 WO2012097669 A1 WO 2012097669A1
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WIPO (PCT)
Prior art keywords
uplink control
bit
information
bits
csi
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PCT/CN2011/084909
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English (en)
Chinese (zh)
Inventor
戴博
梁春丽
任璐
杨维维
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中兴通讯股份有限公司
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Priority claimed from CN201110030794.2A external-priority patent/CN102098146B/zh
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2012097669A1 publication Critical patent/WO2012097669A1/fr

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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
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1861—Physical mapping arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK

Definitions

  • the present invention relates to the field of digital communications, and in particular, to a method and a terminal for transmitting uplink control signaling. Background technique
  • ACK/NACK Acknowledgement/Negative Acknowledgement
  • the physical uplink control channel can support multiple uplink control signaling, including a correct/error response message, and channel state information (CSI: Channel Quality Indicator, CQI: Channel Quality Indicator).
  • CSI Channel Quality Indicator
  • CQI Channel Quality Indicator
  • PMI Precoding Matrix Indicator
  • RI rank Indicator
  • SR Scheduling Request
  • LTE defines a variety of PUCCH formats, including PUCCH format 1/1 a/lb.
  • the channel structure is shown in Figure 1, and format 2/2a/2b.
  • 2, in Figure 1 spread in the frequency domain using the constant envelope zero auto-correlation sequence (CAZAC, Const Amplitude Zero Auto-Corelation) 12 times, in the time domain of 0.5ms duration, including the spread by Walsh code.
  • CAZAC constant envelope zero auto-correlation sequence
  • CDAC Const Amplitude Zero Auto-Corelation
  • the 4th order code length and the 3rd order code length generated by the discrete Fourier transform (DFT) code spreading, wherein the 4th order code length of the time domain Walsh spread represents data, and the 3rd order code length representation of the time domain DFT spread spectrum Pilot;
  • DFT discrete Fourier transform
  • Format 1 is used to send the scheduling request of the UE
  • format la and lb are used to feed back the 1-bit ACK/NACK response message and the 2-bit ACK/NACK response message respectively
  • format 2 is used to send the downlink channel state information
  • format 2a Used to send CSI and 1-bit ACK/NACK response message
  • format 2b is used to send CSI information and 2-bit ACK/NACK response message.
  • the UE in the frequency division duplex system (FDD), since the uplink and downlink subframes are-corresponding, when the PDSCH contains only one transport block, the UE should feed back a 1-bit ACK/NACK response message, when the PDSCH When two transport blocks are included, the UE shall feed back a 2-bit ACK/NACK response message.
  • FDD frequency division duplex system
  • the UE when the UE needs to simultaneously transmit the SR and ACK/NACK response messages:
  • the UE When transmitting the negative SR (indicating that no scheduling request is required), the UE transmits 1 bit on the ACK/NACK PUCCH resource allocated to it or 2-bit ACK/NACK response message, and when a positive SR is to be transmitted (indicating that a scheduling request is made;), the UE transmits a 1-bit or 2-bit ACK/NACK response message on the SR PUCCH resource allocated to it; when the UE needs to transmit simultaneously
  • the ACK/NACK response message and the CSI information if the subframe is a normal cyclic prefix, a 1-bit or 2-bit ACK/NACK response message is modulated onto the second reference signal of each slot, and is transmitted by using format2a/2b. If the subframe is an extended cyclic prefix, a 1-bit or bit ACK/NACK response message and CSI information are jointly encoded, and transmitted using format 2 transmission.
  • TDD time division duplex
  • /NACK response message where multiple downlink subframes corresponding to one uplink subframe are used Called a bounding window.
  • two ACK/NACK feedback modes are defined: One is the binding mode (bundling).
  • the core idea of the method is to ACK/ the transport block corresponding to each downlink subframe that needs to be fed back in the uplink subframe.
  • the NACK response message performs a logical AND operation.
  • a downlink subframe has 2 codeword streams, the UE needs to feed back a 2-bit ACK/NACK response message. If each subframe has only one word stream, the UE needs to feed back 1-bit ACK/NACK.
  • the response message; the other is multiplexing (also known as multiplexing with channel selection), the core idea of which is to use different PUCCH channels and different modulation symbols on the channel to indicate that Different feedback states of the downlink subframes fed back by the uplink subframe.
  • the ACK/NACK fed back by the multiple stream streams of the downlink subframe is logically ANDed (also called spatial bundling,
  • the channel selection operation is followed by channel selection and then transmitted using PUCCH format lb. That is to say, the ACK/NACK information after the logical AND operation is indicated by the 2-bit information b(0) and b(1) carried by the PUCCH format lb, and the index of the PUCCH channel.
  • the transmission method thereof is different from that in the FDD system described above.
  • the UE spatially binds the multiple ACK/NACK response messages in the binding window to obtain the ACK/NACK corresponding to each downlink subframe.
  • the response message is then obtained according to the number of ACKs after the space binding in the binding window, and the corresponding two bits W0) (1) are obtained, and then W0) (1) is sent through the PUCCH corresponding to the SR (when simultaneously When there is a Positive SR transmission, it will be modulated on the second reference signal of PUCCH format 2b, or will be jointly encoded with CQI and sent on PUCCH format 2 (the latter two cases correspond to CQI and ACK/NACK simultaneously) Scenes).
  • the number of ACKs after the space binding in the binding window has a preset mapping relationship with W d), as shown in Table 1:
  • the number of ACKs after the space binding in the binding window is b(0), b(D
  • Table 1 The mapping between the number of ACKs after space binding in the binding window and ⁇ 0 ), ⁇ 1 ) can be implemented in the IMT-Advanced (International Mobile Telecommunications-Advanced) system. High-speed data transmission and large system capacity. In the case of low-speed mobile and hotspot coverage, the peak rate of IMT-Advanced system can reach IGbit/s. In the case of high-speed mobile and wide-area coverage, IMT-Advanced The peak rate of the system can reach 100 Mbit/s.
  • IMT-Advanced International Mobile Telecommunications-Advanced
  • LTE-A Long Term Evolution Advanced
  • CA Carrier Aggregation
  • the carrier-aggregated LTE system bandwidth can be regarded as a component carrier (component carrier), and each component carrier frequency can also be referred to as a cell (Cell), that is, one spectrum can be carried by n component carriers. (Cell) polymerized.
  • component carrier component carrier
  • Cell cell
  • the resources of an R10 user equipment are composed of n cells (component carrier frequencies) in the frequency domain, where one cell Called the primary cell (Primary cell), the remaining cell is called a secondary cell (Secondary cell) 0 after the carrier aggregation is introduced, the current discussion on the downlink component carrier and the PDSCH transmission block and the HARQ process relationships, a basic working assumption is that when not used
  • one downlink component carrier corresponds to one PDSCH transmission block and one HARQ process, that is, the UE needs to feed back 1-bit ACK/NACK response information for one PDSCH transmission block of each component carrier.
  • LTE-A currently specifies up to 2 transport blocks. Therefore, when space division multiplexing is employed, the UE needs to feed back a 2-bit ACK/NACK response message for 2 PDSCH transmission blocks of each downlink component carrier.
  • the uplink bandwidth and the downlink bandwidth may include a plurality of component carriers.
  • the base station schedules a PDSCH for a certain UE on multiple downlink component carriers, and when the UE does not transmit a PUSCH in the current subframe, the terminal needs to feed back the ACK of the PDSCH transmission of the multiple downlink component carriers on the PUCCH. NACK response message.
  • a current work assumes that these ACK/NACK response messages are sent over a UE-specific uplink component carrier; for SR information, the current one assumes that the UE transmits only one SR, and this SR information is passed through a UE-specific The uplink component carrier is transmitted.
  • CSI information the current work assumes that the CSI information is transmitted through a UE-specific uplink component carrier.
  • the current work assumes that the UE transmits using PUCCH format 1 for SR information, and PUCCH format 2 for CSI, and the ACK/NACK response message can be used in addition to LTE.
  • PUCCH format la and lb, multiplexing with channel selection, LTE-A boosts a new DFT-s-OFDM based format for transmitting larger payload ACK/NACK response messages
  • FIG. 3 For convenience of description, this structure is called PUCCH Format 3.
  • PUCCH Format 3 the time domain of 5 ms duration is spread by DFT code to generate a 5th order code length for indicating Data, no spread spectrum in the frequency domain, each frequency domain location is independent Modulation symbols S0 ⁇ S23. Which method the UE uses to feed back ACK/NACK is configured by the upper layer.
  • the UE when the UE is configured to use the PUCCH format 3 feedback ACK/NACK, if the UE also sends the SR in the current subframe, the UE jointly encodes the SR and multiple ACK/NACK response messages. It is then sent on PUCCH format 3.
  • the technical problem to be solved by the present invention is to provide a method and a terminal for transmitting uplink control signaling, so that a terminal in a multi-carrier system with a large bandwidth transmits an ACK/NACK response message and other uplink control information to the base station.
  • the present invention discloses a method for transmitting uplink control signaling, and the method includes:
  • the mode in which the terminal feeds back the correct/error ACK/NACK response message is a channel selection mode, and the terminal according to the ACK/NACK response message of the N physical downlink shared channel PDSCH to be fed back and other uplinks
  • the control information and the set mapping relationship map the ACK/NACK response message into M bit information, and send the M bit information and other uplink control information on a physical uplink control channel agreed with the base station.
  • the other uplink control information is the scheduling request SR
  • the other uplink control information is channel state information CSI
  • the method further includes: when the cyclic prefix is a normal cyclic prefix (Normal CP, Normal Cyclic Prefix), the number of bits of the physical uplink control channel transmitted by the CSI is X, and the mapping is performed after the mapping
  • the 4-bit information and CSI information are:
  • the 2-bit information corresponding to the primary cell is mapped to the second reference signal of each slot of the physical uplink control channel by QPSK modulation, and the 2-bit information corresponding to the secondary cell is mapped to the last two bit positions of the X bits.
  • the 2-bit information corresponding to the primary cell is mapped at the last two bit positions of the X bits, and the 2-bit information corresponding to the secondary cell is mapped at the last fourth bit position and the last number of the X bits.
  • three bits of information corresponding to the secondary cell are mapped to the last two bit positions of the X bits, and the 2-bit information corresponding to the primary cell is mapped to the fourth bit of the last bit of the X bits. Position and the third bit position of the last number;
  • the method further includes: when the cyclic prefix is an extended cyclic prefix (Extended CP, Extended Cyclic Prefix), the number of bits of the physical uplink control channel transmitted by the CSI is X, and the mapping is performed after the mapping
  • the 4-bit information and the CSI information are: the 2-bit information corresponding to the primary cell is mapped at the last two bit positions of the X bits, and the 2-bit information corresponding to the secondary cell is mapped at the last fourth bit of the X bits. Position and the third bit position of the last bit, or the 2-bit information corresponding to the secondary cell is mapped at the last two bit positions of the X bits, and the 2-bit information corresponding to the primary cell is mapped to the reciprocal of the X bits.
  • the method further includes: when the CSI information is transmitted at the bit position, deleting the CSI information, and transmitting the bit information after the ACK/NACK response message mapping;
  • the transmitting the M-bit information and other uplink control information on a physical uplink control channel agreed with the base station is:
  • the terminal When the other uplink control information is the SR, the terminal sends the 2-bit information to the physical uplink control channel corresponding to the SR after the QPSK modulation of the quadrature phase shift keying signal, where the physical area corresponding to the SR
  • the uplink control channel adopts the format lb;
  • the terminal sends the M-bit information on a physical uplink control channel corresponding to the CSI,
  • the 2-bit information is QPSK-modulated and sent on a second reference signal of each time slot of the physical uplink control channel format 2b.
  • the 2-bit information is jointly encoded with the CSI, it is sent on the physical uplink control channel format 2b, or the 4-bit information is jointly encoded with the CSI, and then on the physical uplink control channel format 2 Send
  • the 4-bit information is jointly encoded with the CSI, and then transmitted on the physical uplink control channel format 2.
  • the present invention further provides a terminal, the terminal comprising: a mapping module and a sending module; wherein, the mapping module, in the time division duplex (TDD) system, when the mode of feeding back the ACK/NACK response message is the channel selection mode, according to the feedback The correct/error ACK/NACK response message of the N physical downlink shared channel PDSCH and other uplink control information, and the set mapping relationship maps the ACK/NACK response message into M bit information;
  • TDD time division duplex
  • a sending module configured to send the M-bit information mapped by the mapping module and other uplink control information on a physical uplink control channel agreed with the base station.
  • mapping module is specifically configured to:
  • the other uplink control information is the scheduling request SR
  • only the ACK/NACK response message corresponding to the primary cell and the SR are fed back, where the ACK/NACK response corresponding to the primary cell is cancelled.
  • the mapping module is further configured to: the number of bits transmitted by the physical uplink control channel for transmitting the CSI is X, and when the cyclic prefix is a standard cyclic prefix, the 2-bit information corresponding to the primary cell is subjected to QPSK modulation mapping.
  • the 2-bit information corresponding to the primary cell is mapped to the last two bit positions of the X bits, and the 2-bit information corresponding to the secondary cell is mapped to the reciprocal of the X bits.
  • mapping the second bit position and the third bit position of the last cell, or mapping the 2-bit information corresponding to the secondary cell to the last two bit positions of the X bits, and mapping the 2-bit information corresponding to the primary cell to the location Describe the fourth bit position of the last bit of the X bits and the third bit position of the last number;
  • the mapping module is further configured to: when the CSI information is transmitted at the bit position, cancel the CSI information, and transmit the bit information after the ACK/NACK response message mapping; preferably, the sending The module is specifically used to:
  • the terminal When the other uplink control information is SR, the terminal performs the four-phase phase on the 2-bit information.
  • the shift keying signal QPSK is modulated and transmitted on the physical uplink control channel corresponding to the SR, wherein the physical uplink control channel corresponding to the SR adopts the format lb;
  • the terminal sends the M-bit information on a physical uplink control channel corresponding to the CSI,
  • the 2-bit information is QPSK-modulated and sent on a second reference signal of each time slot of the physical uplink control channel format 2b.
  • the 2-bit information is jointly encoded with the CSI, it is sent on the physical uplink control channel format 2b, or the 4-bit information is jointly encoded with the CSI, and the physical uplink control channel is used. Sent on format 2;
  • the 4-bit information is jointly encoded with the CSI, and then sent on the physical uplink control channel format 2.
  • the invention provides a transmission method and a terminal for uplink control signaling, which effectively solves the problem that the response message, the scheduling request and the channel state information of multiple downlink component carriers are simultaneously transmitted, and ensures the performance of the system.
  • Figure 1 is a schematic diagram of PUCCH format 1/la/lb when a conventional cyclic prefix is used for a subframe in the existing LTE system;
  • FIG. 2 is a schematic diagram of a PUCCH format 2/2a/2b when a conventional cyclic prefix is used in a legacy LTE system;
  • FIG. 3 is a schematic diagram of a PUCCH format 3 when a conventional cyclic prefix is used for a subframe in an existing LTE system;
  • FIG. 4 is a schematic flowchart diagram of a method for transmitting uplink control signaling according to the present invention. detailed description
  • the present invention implements a method for transmitting uplink control signaling. As shown in FIG. 4, the method includes the following steps:
  • Step 101 In the TDD system, the mode in which the terminal feeds back the ACK/NACK response message is a channel selection mode, and the terminal according to the correct/error ACK/NACK response message and other uplink control information of the N physical downlink shared channel PDSCH to be fed back. And mapping the ACK/NACK response message to M bit information;
  • Step 102 Send the M-bit information and other uplink control information on a physical uplink control channel agreed with the base station.
  • Example 1
  • the mode in which the terminal feeds back the ACK/NACK response message is the channel selection mode, and the number of serving cells configured by the terminal is 2, when the N physical downlink shared channel PDSCH to be fed back by the terminal is correct/
  • the ACK/NACK response message and the scheduling request SR are received, only the ACK/NACK response message and the SR corresponding to the primary cell are fed back, wherein the ACK/NACK response message corresponding to the primary cell is mapped to 2 according to the binding mode of the channel selection mode.
  • Bit, M 2;
  • HARQ-ACK (O), HARQ-ACK (1), HARQ-ACK (2), and HARQ-ACK (3) represent N physical downlink shared channels.
  • the correct/error ACK/NACK response message of the PDSCH passes the spatially bound response message;
  • DTX indicates no response message corresponding, and any indicates ACK (A) /NACK ( N ) /DTX ( D );
  • NACK/DTX any NACK/DTX, NACK/DTX Table 2: Mapping relationship when the number of downlink subframes corresponding to the uplink subframe is 2
  • NACK/DTX any, any NACK/DTX, NACK/DTX Table 3 Mappings when the number of downlink subframes corresponding to the uplink subframe is 3.
  • Table 4 A mapping relationship when the number of downlink subframes corresponding to the uplink subframe is 4.
  • Table 6 Another mapping relationship when the number of downlink subframes corresponding to the uplink subframe is 4:
  • the terminal performs phase shifting of the 2-bit information (where ACK corresponds to "1" and NACK/DTX corresponds to "0")
  • the physical uplink control signal corresponding to the SR after the keying signal QPSK is modulated Intra-channel transmission, where the physical uplink control channel corresponding to the SR adopts a format lb;
  • the mode in which the terminal feeds back the ACK/NACK response message is the channel selection mode, and the number of serving cells configured by the terminal is 2, when the N physical downlink shared channel PDSCH to be fed back by the terminal is correct/
  • the ACK/NACK response message is mapped to 4 bits according to the binding mode of the channel selection mode, and each serving cell corresponds to 2 bits, and the mapped 4-bit information is transmitted.
  • the number of bits that the physical uplink control channel transmitting the CSI can transmit is X, and X can be 11 or 13;
  • the 2-bit information corresponding to the primary cell is transmitted on the second reference signal of each slot of the physical uplink control channel format 2b after being modulated by QPSK, and the corresponding 2 bits of the secondary cell are used.
  • the information is mapped on the last two bit positions of the X bits; the 2-bit information is jointly encoded with the CSI, and then sent on the physical uplink control channel format 2b;
  • the 2-bit information corresponding to the primary cell is mapped to the last two bit positions of the X bits, and the 2-bit information corresponding to the secondary cell is mapped to the fourth last of the X bits. a bit position and a third bit position of the last bit; the 4-bit information is jointly encoded with the CSI, and then transmitted on the physical uplink control channel format 2; when there is CSI information transmission at the bit position, Deleting the CSI information, and transmitting the bit information mapped by the ACK/NACK response message;
  • Example 3 In the time division duplex (TDD) system, the mode in which the terminal feeds back the ACK/NACK response message is the channel selection mode, and the number of serving cells configured by the terminal is 2, when the N physical downlink shared channel PDSCH to be fed back by the terminal is correct/
  • the ACK/NACK response message is mapped to 4 bits according to the binding mode of the channel selection mode, and each serving cell corresponds to 2 bits, and the mapped 4-bit information is transmitted.
  • the number of bits that the physical uplink control channel transmitting the CSI can transmit is X, and X can be 11 or 13;
  • the 2-bit information corresponding to the primary cell is mapped to the last two bit positions of the X bits, and the 2-bit information corresponding to the secondary cell is mapped to the fourth last of the X bits.
  • the 4-bit information is jointly encoded with the CSI, and then transmitted on the physical uplink control channel format 2; when the cyclic prefix is an extended cyclic prefix, the primary cell corresponds to The 2-bit information is mapped at the last two bit positions of the X bits, and the 2-bit information corresponding to the secondary cell is mapped at the last fourth bit position and the third last bit position of the X bits; After the 4-bit information is jointly encoded with the CSI, it is sent on the physical uplink control channel format 2; when there is CSI information transmission at the bit position, the CSI information is deleted, and the ACK/NACK is transmitted. Answering the bit information after the message is mapped;
  • the embodiment provides a terminal, where the terminal includes: a mapping module and a sending module; wherein, the mapping module, in the time division duplex (TDD) system, when the mode of feeding back the ACK/NACK response message is the channel selection mode, according to the required Transmitting the correct/error ACK/NACK response message of the N physical downlink shared channel PDSCH and other uplink control information, and setting the mapping relationship to map the ACK/NACK response message into M bit information;
  • TDD time division duplex
  • a sending module configured to map the M-bit information mapped by the mapping module with other uplink control signals
  • the information is sent on the physical uplink control channel agreed with the base station.
  • the mapping module is specifically configured to:
  • the other uplink control information is the scheduling request SR
  • the physical uplink control channel for transmitting the CSI can transmit X bits.
  • the cyclic prefix is a standard cyclic prefix
  • the 2-bit information corresponding to the primary cell is mapped to the physical uplink control channel by QPSK modulation.
  • the 2-bit information corresponding to the primary cell is mapped to the last two bit positions of the X bits, and the 2-bit information corresponding to the secondary cell is mapped to the reciprocal of the X bits.
  • mapping the second bit position and the third bit position of the last cell, or mapping the 2-bit information corresponding to the secondary cell to the last two bit positions of the X bits, and mapping the 2-bit information corresponding to the primary cell to the location Describe the fourth bit position of the last bit of the X bits and the third bit position of the last number;
  • the mapping module is further configured to: when there is CSI information transmission at the bit position, And deleting the CSI information, and transmitting the bit information after the ACK/NACK response message mapping; the sending module is specifically configured to:
  • the terminal When the other uplink control information is the SR, the terminal sends the 2-bit information to the physical uplink control channel corresponding to the SR after the QPSK modulation of the quadrature phase shift keying signal, where the physical area corresponding to the SR
  • the uplink control channel adopts the format lb;
  • the terminal sends the M-bit information on a physical uplink control channel corresponding to the CSI,
  • the 2-bit information is QPSK-modulated and sent on a second reference signal of each time slot of the physical uplink control channel format 2b.
  • the 2-bit information is jointly encoded with the CSI, and then transmitted on the physical uplink control channel format 2b.
  • the 4-bit information is jointly encoded with the CSI, and then transmitted on the physical uplink control channel format 2.
  • the method of the present invention effectively solves the problem that the response message and the scheduling request and the channel state information of multiple downlink component carriers are simultaneously transmitted.

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Abstract

La présente invention se rapporte à un procédé adapté pour transmettre des signaux de commande sur la liaison montante. Dans un système de duplexage par répartition dans le temps (TDD, Time Division Duplex), un mode d'un terminal qui renvoie un message de réponse d'accusé de réception/accusé de réception négatif (ACK/NACK) est un mode de sélection de canal. Le message de réponse ACK/NACK est mappé par rapport à M bits d'information par le terminal sur la base de N messages de réponse ACK/NACK, qui doivent être renvoyés, d'un canal physique partagé sur la liaison descendante (PDSCH, Physical Downlink Shared Channel), d'autres données de contrôle sur la liaison montante et d'une relation de mappage configurée. M bits d'information et d'autres données de contrôle sur la liaison montante sont transmis sur un canal de contrôle physique sur la liaison montante qui comprend une station de base. La présente invention se rapporte d'autre part à un terminal adapté pour transmettre des signaux de commande sur la liaison montante. La solution technique de la présente invention permet de résoudre efficacement le problème lié à la transmission simultanée de messages de réponse, de demandes de programmation d'une pluralité de composantes porteuses sur la liaison descendante, et de données d'état de canal. Elle garantit d'autre part la performance du système.
PCT/CN2011/084909 2011-01-21 2011-12-29 Procédé et terminal pour transmettre des signaux de commande sur la liaison montante WO2012097669A1 (fr)

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