WO2011106996A1 - Procédé, système et appareil pour la transmission d'informations de contrôle sur la liaison descendante (dci) et la réalisation d'une transmission sur la liaison montante - Google Patents

Procédé, système et appareil pour la transmission d'informations de contrôle sur la liaison descendante (dci) et la réalisation d'une transmission sur la liaison montante Download PDF

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Publication number
WO2011106996A1
WO2011106996A1 PCT/CN2011/000355 CN2011000355W WO2011106996A1 WO 2011106996 A1 WO2011106996 A1 WO 2011106996A1 CN 2011000355 W CN2011000355 W CN 2011000355W WO 2011106996 A1 WO2011106996 A1 WO 2011106996A1
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Prior art keywords
indication information
dci
indicate
uplink transmission
resource
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PCT/CN2011/000355
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English (en)
Chinese (zh)
Inventor
陈文洪
缪德山
赵锐
潘学明
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电信科学技术研究院
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Publication of WO2011106996A1 publication Critical patent/WO2011106996A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W99/00—Subject matter not provided for in other groups of this subclass
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0025—Transmission of mode-switching indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • 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
    • H04L25/03343—Arrangements at the transmitter end
    • 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
    • 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
    • H04L5/0091—Signaling for the administration of the divided 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

Definitions

  • the present invention relates to a wireless communication technology, and in particular, to a method, system, and apparatus for transmitting DCI (downlink control information) and uplink transmission.
  • DCI downlink control information
  • MIMO Multiple Input Multiple Output
  • MIMO Multiple Input Multiple Output
  • LTE-A Long Term Evolution-Advanced
  • MIMO transmission can be implemented in at least two transmission modes: uplink single port transmission and uplink spatial multiplexing transmission.
  • the former transmits only a single port of data on multiple antennas by means of antenna virtualization, and is basically consistent with the uplink transmission of LTE (Long Term Evolution) from the base station side; the latter simultaneously transmits precoding through spatial multiplexing.
  • Multiple data streams greatly increase system throughput.
  • LTE-A also introduces a non-contiguous resource configuration in the uplink transmission, allowing users to occupy discrete multi-block resources to improve the frequency domain diversity gain.
  • the base station needs to notify the UE (User Equipment) of the allocated physical resources and uplink transmission information through DCI, such as HARQ (Hybrid Automatic Repeat Request). Information, precoding information, etc.
  • DCI is sent to the UE in a specific DCI format through a PDCCH (physical downlink control channel), and the UE obtains corresponding information by blindly detecting the PDCCH.
  • PDCCH physical downlink control channel
  • the base station uses DCI format 0 to schedule uplink transmission.
  • the format only supports single-antenna or single-port transmission under uplink continuous resource configuration, and cannot support non-contiguous resource configuration and spatial multiplexing transmission.
  • the current DCI does not support the LTE-A system, which makes it difficult for the network side to schedule user terminals for uplink transmission.
  • the embodiments of the present invention provide a method, a system, and a device for transmitting DCI and uplink transmission, which are used to implement uplink transmission by a network side scheduling user terminal in an LTE-A system.
  • a method for transmitting downlink control information DCI includes: generating, by a network side, a DCI for scheduling uplink transmission;
  • the network side sends the generated DCI, and is used to indicate that the user terminal that receives the DCI performs uplink transmission according to the DCI.
  • the DCI includes the following information: resource indication information, used to indicate a resource location of the allocated resource, modulation indication information, used to indicate a modulation coding order of the transport block, and data indication information, used to indicate whether the transport block transmits a new one.
  • resource indication information used to indicate a resource location of the allocated resource
  • modulation indication information used to indicate a modulation coding order of the transport block
  • data indication information used to indicate whether the transport block transmits a new one.
  • the mapping indication information is used to indicate a correspondence between the transport block and the codeword.
  • the precoding indication information is used to indicate the size of the rank of the uplink transmission and the index of the precoded codeword used.
  • the user terminal receives downlink control information DCI for scheduling uplink transmission;
  • the user terminal performs uplink transmission according to the DCI
  • the DCI includes the following information: resource indication information, used to indicate a resource location of the allocated resource, modulation indication information, used to indicate a modulation coding order of the transport block, and data indication information, used to indicate whether the transport block transmits a new one.
  • resource indication information used to indicate a resource location of the allocated resource
  • modulation indication information used to indicate a modulation coding order of the transport block
  • data indication information used to indicate whether the transport block transmits a new one.
  • the mapping indication information is used to indicate a correspondence between the transport block and the codeword.
  • the precoding indication information is used to indicate the size of the rank of the uplink transmission and the index of the precoded codeword used.
  • a network side device configured to generate downlink control information DCI for scheduling uplink transmission, sending a message
  • the DCI is used to indicate that the user terminal that receives the DCI performs uplink transmission according to the DCI, and the user terminal is configured to receive a DCI for scheduling uplink transmission, and perform uplink transmission according to the DCI;
  • the DCI includes the following information: resource indication information, used to indicate a resource location of the allocated resource, modulation indication information, used to indicate a modulation coding order of the transport block, and data indication information, used to indicate whether the transport block transmits a new one.
  • resource indication information used to indicate a resource location of the allocated resource
  • modulation indication information used to indicate a modulation coding order of the transport block
  • data indication information used to indicate whether the transport block transmits a new one.
  • the mapping indication information is used to indicate a correspondence between the transport block and the codeword.
  • the precoding indication information is used to indicate the size of the rank of the uplink transmission and the index of the precoded codeword used.
  • a network side device where the network side device includes:
  • a generating module configured to generate downlink control information DCI for scheduling uplink transmission
  • An information sending module configured to send the generated DCI, to indicate that the user terminal that receives the DCI performs uplink transmission according to the DCI;
  • the DCI includes the following information: resource indication information, used to indicate a resource location of the allocated resource, modulation indication information, used to indicate a modulation coding order of the transport block, and data indication information, used to indicate whether the transport block transmits a new one.
  • resource indication information used to indicate a resource location of the allocated resource
  • modulation indication information used to indicate a modulation coding order of the transport block
  • data indication information used to indicate whether the transport block transmits a new one.
  • the mapping indication information is used to indicate a correspondence between the transport block and the codeword.
  • the precoding indication information is used to indicate the size of the rank of the uplink transmission and the index of the precoded codeword used.
  • a receiving module configured to receive downlink control information DCI for scheduling uplink transmission
  • a transmission module configured to perform uplink transmission according to the DCI
  • the DCI includes the following information: resource indication information, used to indicate a resource location of the allocated resource, modulation indication information, used to indicate a modulation coding order of the transport block, and data indication information, used to indicate whether the transport block transmits a new one.
  • resource indication information used to indicate a resource location of the allocated resource
  • modulation indication information used to indicate a modulation coding order of the transport block
  • data indication information used to indicate whether the transport block transmits a new one.
  • the mapping indication information is used to indicate a correspondence between the transport block and the codeword.
  • the precoding indication information is used to indicate the size of the rank of the uplink transmission and the index of the precoded codeword used.
  • the network side sends a DCI, where the DCI includes: resource indication information, which is used to indicate a resource location of the allocated resource, and modulation indication information, which is used to indicate a modulation coding stage of the transport block.
  • the data indicating information is used to indicate whether the transport block transmits new data.
  • the mapping indication information is used to indicate a correspondence between the transport block and the codeword.
  • the precoding indication information is used to indicate the size of the uplink transmission and the preamble used. The index of the encoded codeword.
  • the DCI in the embodiment of the present invention can support the LTE-A system, so that the network side can schedule the user terminal to perform uplink transmission, thereby improving the efficiency of the uplink transmission. Further, the embodiment of the present invention does not need to change the existing DCI format. The content does not need to limit the uplink and downlink transmission modes, and can support signaling indications of various transmission scenarios of uplink MIMO.
  • FIG. 1 is a schematic structural diagram of a transmission system according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of a network side device according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a user terminal according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic flowchart of a method for transmitting a DCI according to an embodiment of the present invention
  • FIG. 5 is a schematic flowchart of a method for uplink transmission according to an embodiment of the present invention. detailed description
  • the DCI supporting the LTE-A system is configured in the LTE-A system, and the network side sends the configured DCI to the user terminal.
  • the DCI includes: The resource indication information is used to indicate a resource location of the allocated resource; the modulation indication information is used to indicate a modulation coding order of the transport block; the data indication information is used to indicate whether the transport block transmits new data; and the mapping indication information is used to indicate Corresponding relationship between the transport block and the codeword; precoding indication information, used to indicate the size of the rank of the uplink transmission and the index of the precoded codeword used.
  • the DCI in the embodiment of the present invention can support the LTE-A system, that is, the multi-antenna or multi-port in the specified resource configuration can be supported, so that the network side can schedule the user terminal to perform uplink transmission, thereby improving the efficiency of the uplink transmission.
  • the embodiments of the present invention can be applied to any duplex system (TDD system or FDD system), such as an LTE-A system, and can also be applied to any system that performs MIMO technology transmission.
  • the embodiments of the present invention can be used for any number of antennas, antenna arrays (such as line arrays, polarization arrays), and arbitrary transmission modes (such as single-port modular transmission in a non-contiguous resource configuration, SU-MIMO (Singer User Multiple Input Multiple Output) Uplink transmission under single-user multiple-input multiple-output), MU-MIMO (Multi-User Multiple Input Multiple Output), and UL CoMP (uplink carrier aggregation).
  • SU-MIMO Silicon User Multiple Input Multiple Output
  • MU-MIMO Multi-User Multiple Input Multiple Output
  • UL CoMP uplink carrier aggregation
  • the system for transmitting in the embodiment of the present invention includes: a network side device 10 and a user terminal.
  • the network side device 10 is configured to generate a DCI for scheduling uplink transmission, and send the generated DCI, where the user terminal that receives the DCI performs uplink transmission according to the DCI.
  • the DCI includes the following information:
  • the resource indication information is used to indicate the resource location of the allocated resource. For example, when the resource configuration type is 0, all bits are used to indicate resource allocation. When the resource configuration type is 1, "2 (P is specified in the LTE Release 8 standard) Value bits are used to indicate a subset of resource blocks, 1 bit is used to indicate the offset of the resource block range, and other bits are used to indicate a specific resource allocation;
  • the modulation indication information is used to indicate a modulation coding order of the transport block, for example, there are two transport blocks, a transport block 1 and a transport block 2, and respectively need to indicate the modulation and coding order of the transport block 1 and the transport block 2; Used to indicate whether the transport block transmits new data, such as two transport blocks, transport block 1 and transport block 2. If HARQ bundling is not used, it is necessary to indicate whether new data is transmitted by transport block 1 and transport block 2; HARQ bundling, the transport block 1 and the transport block 2 share the same data indication information, that is, there is no need to separately indicate whether the transport block 1 and the transport block 2 transmit new data, but a common indication;
  • Mapping indication information used to indicate a correspondence between a transport block and a codeword
  • the precoding indication information is used to indicate the size of the rank of the uplink transmission and the index of the precoded codeword used.
  • the user terminal 20 is configured to receive, by the network side device, a DCI for scheduling uplink transmission, where According to the DCI, uplink transmission is performed.
  • the DCI also includes one or more of the following information (including all):
  • the power control indication information is used to adjust a transmit power of a Physical Uplink Shared Channel (PUSCH);
  • PUSCH Physical Uplink Shared Channel
  • a cyclic shift indication information configured to indicate a cyclic shift value of a first DMRS (Demodulation Reference Symbol) port, or a pattern (mode) indicating a cyclic shift value and an orthogonal code used by each DMRS port, Specifically indicating which meaning can be specified in the protocol, the network side device 10 can also notify the user terminal 20;
  • DMRS Demodulation Reference Symbol
  • mode pattern indicating a cyclic shift value and an orthogonal code used by each DMRS port
  • the subframe indication information is used to indicate an uplink subframe number corresponding to the DCI when the number of uplink subframes is greater than the number of downlink subframes;
  • the downlink allocation indication information is used to indicate the number of PDSCHs (Physical Downlink Shared Channels) to be fed back and the sum of the number of SPS (Semi-Persistent Scheduling) dry-release signaling, and the user terminal is configured according to
  • the downlink allocation indication information can check whether the packet is lost;
  • Sending indication information which is used to indicate whether the user terminal reports one or more of an aperiodic RI ( Rank Indicator, a PMI (Precoding Matrix Indicator), and a CQI (Channel Quality Indicator)
  • aperiodic RI Rank Indicator
  • PMI Precoding Matrix Indicator
  • CQI Channel Quality Indicator
  • the resource configuration type indication information is used to indicate the resource configuration type, that is, 0 or 1. If the uplink bandwidth is not greater than 10 PRBs (physical resource blocks), the bit may not be used, and the resource configuration type 0 is adopted by default;
  • OCC Orthogonal Cover Code
  • the SRS probe reference signal
  • indication information which is used to indicate whether the user terminal reports an aperiodic SRS
  • the frequency hopping indication information is used to indicate whether a group hopping flag is performed, or whether a sequence hopping flag is performed, where the frequency hopping of the different cell configuration indications is different, for example, the cell configuration allows the group hopping.
  • the frequency is used to indicate the group frequency hopping, and the cell configuration is used to indicate the sequence frequency hopping when the sequence hopping is allowed;
  • Cross-carrier indication information (CIF (Crossing Indication Field)) is used to indicate scheduling across carriers.
  • the bit is padded in the generated DCI, and the DCI after the padding is used as the DCI to be sent;
  • the format of the generated DCI is different from that of other DCIs; the length of the DCI after the padding is not the length of the blur, and is different from the length of other DCI formats.
  • the fuzzy length includes: ⁇ 12, 14, 16, 20, 24, 26, 32, 40, 44, 56 ⁇
  • other DCI formats include but are not limited to: DCI format in LTE system, LTE-A system except the present invention The format of the DCI outside the embodiment.
  • DCI formats have lengths of 13 and 23, and the length of the generated DCI is 23 bits. If the length of other DCI formats is the same, padding bits are required. In order to avoid confusion, you can fill 2 bits 0 at the end, and the length of the DCI after padding is 25 bits, that is, it is not the same as other DCI formats, nor is it fuzzy length.
  • the format of the DCI may include the contents of Table 1.
  • N is the number of PRBs included in the upstream bandwidth.
  • P the parenthesis P is the size of the RBG (resource block group), specific resource indication information
  • the representation is rounded up.
  • the indication method depends on the type of resource allocation.
  • the method implements an RB indication.
  • log 2 (/>) 1 bits indicate the subset of resource groups located. 1 bit is used to indicate the resource start position, and the remaining bits are used to indicate the location of resource allocation.
  • CS indicating the first DMRS port (cyclic shift cyclic indication information 3-bit value) or the cyclic shift value and orthogonal code pattern used by each DMRS port
  • the subframe indication information 2 (such as the case where the downlink subframe configuration of the TDD system is 0) indicates that the uplink subframe number corresponding to the DCI is used to indicate the PDSCH that needs to be fed back.
  • mapping indication information 1 Defining the correspondence between the transport block and the codeword, mapping indication information 1
  • the indicated precoding information is specific to the number of bits and
  • Precoding indication information Number of ports of the UE antenna
  • the indicated precoding signal is relevant. As shown in Table 4.
  • the interest rate is shown in Table 6.
  • Sending indication information 1 Is the UE required to report the aperiodic CQI/RI PMI?
  • the format of the DCI may also include one or more of the contents of Table 2. That can also include: Information field Number of bits Meaning and description
  • the OCC format indication information 1/2 indicates the adopted OCC sequence. Based on the DMRS transmission 1 indicates whether the sounding sounding indication information is sent at the location of the DMRS.
  • the data indication letter 1 of code word 2 is used to indicate whether there is new data transmission.
  • the frequency hopping indication information 1 indicates whether to perform group hopping or sequence hopping;
  • the cross carrier indication information 3 is used to indicate scheduling of the cross-carrier;
  • the indication contents of the 3-bit precoding indication information are shown in Table 5.
  • the precoding vector is a
  • the precoding vector is a
  • the indication content of the 6-bit precoding indication information is shown in Table 6.
  • TRI is the size of the transmitted RI (rank)
  • TPMI is the index of the uplink precoding matrix
  • Table 6 can also be modified to the following table:
  • the network side device in the embodiment of the present invention may be a base station (such as a macro base station, an evolved base station, a home base station, etc.), or an RN (relay) device, or other network side devices.
  • a base station such as a macro base station, an evolved base station, a home base station, etc.
  • RN relay
  • the network side device of the embodiment of the present invention includes: a generating module 100 and an information sending module 110.
  • the generating module 100 is configured to generate a DCI for scheduling uplink transmission.
  • the information sending module 110 is configured to send the DCI generated by the generating module 100, and is used to indicate that the user terminal that receives the DCI performs uplink transmission according to the DCI.
  • the DCI generated by the generating module 100 is the same as the DCI generated by the network side device 10 in FIG. 1 , and details are not described herein again.
  • the generating module 100 may further fill a bit in the generated DCI when the length of the generated DCI is the same as the length of the other DCI format or the length of the generated DCI is a fuzzy length, and use the DCI after the padding as the DCI to be sent;
  • the format of the generated DCI is different from that of other DCIs; the length of the DCI after the padding is not the length of the blur, and is different from the length of other DCI formats.
  • the user terminal of the embodiment of the present invention includes: a receiving module 200 and a transmitting module 210.
  • the receiving module 200 is configured to receive a DCI for scheduling uplink transmission.
  • the transmission module 210 is configured to perform uplink transmission according to the DCI received by the receiving module 200.
  • the DCI received by the receiving module 200 is the same as the DCI generated by the network side device 10 in FIG. 1, and details are not described herein again.
  • the method for transmitting a DCI in the embodiment of the present invention includes the following steps:
  • Step 401 The network side generates a DCI for scheduling uplink transmission.
  • the DCI includes the following information: resource indication information, used to indicate a resource location of the allocated resource; modulation indication information, used to indicate a modulation coding order of the transport block; and data indication information, used to indicate whether the transport block transmits new data;
  • the mapping indication information is used to indicate a correspondence between the transport block and the codeword.
  • the precoding indication information is used to indicate the size of the rank of the uplink transmission and the index of the precoded codeword used.
  • Step 402 The network side sends the generated DCI, and is used to indicate that the user terminal that receives the DCI performs uplink transmission according to the DCI.
  • step 401 the DCI generated by the network side for scheduling the uplink transmission is the same as the DCI generated by the network side device 10 in FIG. 1, and details are not described herein again.
  • Step 401 and step 402 may further include: when the length is fuzzy, padding the generated DCI, and using the padding DCI as the DCI to be sent; The format of the generated DCI and other DCIs is different; the length of the DCI after padding bits is not the length of the blur, and is different from the length of other DCI formats.
  • the method for uplink transmission in the embodiment of the present invention includes the following steps:
  • Step 501 The user terminal receives a DCI for scheduling uplink transmission.
  • the DCI includes the following information: resource indication information, used to indicate a resource location of the allocated resource; modulation indication information, used to indicate a modulation coding order of the transport block; and data indication information, used to indicate whether the transport block transmits new data;
  • the mapping indication information is used to indicate a correspondence between the transport block and the codeword.
  • the precoding indication information is used to indicate the size of the rank of the uplink transmission and the index of the precoded codeword used.
  • Step 502 The user equipment performs uplink transmission according to the received DCI.
  • step 501 the DCI received by the user terminal is the same as the DCI generated by the network side device 10 in FIG. 1, and details are not described herein.
  • step 501 and steps in FIG. 4 may also be included before step 501.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in a block or blocks of a flow or a flow and/or a block diagram of a flowchart
  • the network side sends a DCI; where the DCI includes: resource indication information, used to indicate a resource location of the allocated resource; and modulation indication information, used to indicate the transport block. Modulation coding order; data indication information, used to indicate whether the transport block transmits new data; mapping indication information, used to indicate a correspondence between the transport block and the codeword; precoding indication information, used to indicate the rank of the uplink transmission And the index of the precoded codeword used.
  • resource indication information used to indicate a resource location of the allocated resource
  • modulation indication information used to indicate the transport block. Modulation coding order
  • data indication information used to indicate whether the transport block transmits new data
  • mapping indication information used to indicate a correspondence between the transport block and the codeword
  • precoding indication information used to indicate the rank of the uplink transmission And the index of the precoded codeword used.
  • the DCI in the embodiment of the present invention can support the LTE-A system, so that the network side can schedule the user terminal to perform uplink transmission, thereby improving the efficiency of the uplink transmission.
  • the embodiment of the present invention does not need to change the content of the existing DCI format, and does not need to limit the uplink and downlink transmission modes, and can support signaling indications of various transmission scenarios of the uplink.

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Abstract

La présente invention se rapporte à un procédé, à un système et à un appareil pour la transmission de DCI et la réalisation d'une transmission sur la liaison montante. Le procédé, le système et l'appareil selon la présente invention sont utilisés pour résoudre le problème de l'état de la technique lié au fait qu'il est difficile, pour le côté réseau, de programmer l'équipement d'utilisateur (EU) de manière à l'amener à exécuter une transmission sur la liaison montante du fait que les DCI actuelles ne sont pas aptes à prendre en charge un système LET-A. Le procédé pour la transmission de DCI mis en œuvre dans les modes de réalisation de la présente invention comprend les étapes suivantes : le côté réseau génère des DCI pour programmer une transmission sur la liaison montante; et ledit côté réseau transmet les DCI générées. Selon l'invention, lesdites DCI contiennent les informations suivantes : des informations d'indication de ressource, pour indiquer l'emplacement de ressource d'une ressource attribuée; des informations d'indication de modulation, pour indiquer l'ordre de codage par modulation d'un bloc de transmission; des informations d'indication de données, pour indiquer si de nouvelles données seront transmises par le bloc de transmission; des informations d'indication de mappage, pour indiquer la relation correspondante entre le bloc de transmission et un mot codé; des informations d'indication de précodage, pour indiquer la taille de rang d'une transmission sur la liaison montante et l'indice du mot codé de précodage utilisé. La mise en œuvre du procédé décrit dans le mode de réalisation de la présente invention permet d'améliorer l'efficacité de transmission sur la liaison montante.
PCT/CN2011/000355 2010-03-05 2011-03-04 Procédé, système et appareil pour la transmission d'informations de contrôle sur la liaison descendante (dci) et la réalisation d'une transmission sur la liaison montante WO2011106996A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2010101191864A CN102083223A (zh) 2010-03-05 2010-03-05 一种发送dci和上行传输的方法、系统及装置
CN201010119186.4 2010-03-05

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