WO2017035719A1 - Procédé de transmission d'informations de commande et dispositif associé - Google Patents

Procédé de transmission d'informations de commande et dispositif associé Download PDF

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Publication number
WO2017035719A1
WO2017035719A1 PCT/CN2015/088524 CN2015088524W WO2017035719A1 WO 2017035719 A1 WO2017035719 A1 WO 2017035719A1 CN 2015088524 W CN2015088524 W CN 2015088524W WO 2017035719 A1 WO2017035719 A1 WO 2017035719A1
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WIPO (PCT)
Prior art keywords
sequence
length
control information
target
phase shift
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PCT/CN2015/088524
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English (en)
Chinese (zh)
Inventor
吴毅凌
杨育波
刘铮
罗超
Original Assignee
华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201580079036.6A priority Critical patent/CN107534874A/zh
Priority to PCT/CN2015/088524 priority patent/WO2017035719A1/fr
Publication of WO2017035719A1 publication Critical patent/WO2017035719A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and a related device for transmitting control information.
  • MTC Machine Type Communication
  • M2M Machine To Machine
  • OFDMA Orthogonal Frequency Division Multiple Access
  • PDCH Physical Downlink Control Channel
  • uplink resource configuration information (UL Allocation), downlink resource configuration information (DL Allocation), random access configuration information, and acknowledgement ACK (or non-acknowledgement NACK) feedback of uplink transmission data, paging information, and the like.
  • UL Allocation uplink resource configuration information
  • DL Allocation downlink resource configuration information
  • acknowledgement ACK or non-acknowledgement NACK
  • the user equipment (User Equipment, referred to as "UE") is informed of the length of the control information, so that the UE decodes the control information corresponding to the length.
  • the UE In the Long Term Evolution (LTE) system in which the OFDMA is used, the UE generally obtains the downlink control information (Downlink Control Information, referred to as "DCI" by using the PDCCH.
  • DCI Downlink Control Information
  • the UE needs to attempt to decode all control information positions and possible control information formats (including length and other information) that may belong to the UE, and each attempt to decode requires a large amount of calculation, so that the UE greatly
  • the computational complexity of the UE acquiring the length information is increased, thereby increasing the design cost and energy consumption of the UE, and thus cannot be applied to a narrowband system requiring low cost and low power consumption.
  • the embodiment of the invention provides a method for transmitting control information and a related device, which can indicate the length of the control information by using a sequence corresponding to the length of the control information as a pilot signal, thereby reducing the design cost and energy consumption of the UE.
  • an embodiment of the present invention provides a method for transmitting control information, including:
  • the base station uses the first target sequence as a pilot signal in a PDCCH corresponding time slot, and sends the pilot signal and the target control information to a user equipment by using the PDCCH corresponding time slot.
  • the determining, by the base station, the first sequence set corresponding to the current PDCCH includes:
  • the base station acquires a second sequence set corresponding to the length of the pilot signal, where the second sequence set includes at least one sequence having the same length as the length of the pilot signal;
  • the base station determines the first sequence set from the second sequence set according to an algorithm negotiated in advance with the user equipment.
  • the base station determines, according to an algorithm negotiated in advance with the user equipment, from the second sequence set Out of the first sequence set, comprising:
  • the base station acquires a preset phase shift value set corresponding to the second target sequence, the phase shift value set includes at least one phase shift value, and each of the phase shift values corresponds to one control information length;
  • the base station performs phase shifting on the second target sequence by using at least one phase shift value in the phase shift value set, to obtain a first sequence set corresponding to the phase shift value set, where the first sequence
  • the number of sequences in the set is the same as the number of phase shift values in the set of phase shift values.
  • the length of the target control information is determined from the first sequence set as a first target sequence, including:
  • the base station determines, in the length of the control information length corresponding to the first sequence set, a length that is not less than a length of the target control information, and a length corresponding to the length of the control information that is the smallest length, as the first target sequence.
  • the sending, by the base station, the pilot signal and the target control information to the user equipment by using the PDCCH corresponding time slot including:
  • the base station performs length compensation on the target control information according to the length of the control information corresponding to the first target sequence, and sends the pilot signal and the compensated target control to the user equipment by using the PDCCH corresponding time slot. information.
  • the first target sequence is a ZC sequence, an m sequence, or a Gold sequence.
  • an embodiment of the present invention provides a method for transmitting control information, including:
  • the user equipment respectively calculates a correlation between each sequence in the first sequence set and the first target sequence, and determines at least one sequence of the first sequence set and the first target The sequence with the highest sequence correlation;
  • the user equipment determines the length of the control information corresponding to the sequence with the highest correlation as the length of the target control information to be received, and decodes the corresponding PDCCH slot to obtain target control information corresponding to the length.
  • the determining, by the user equipment, the first sequence set corresponding to the PDCCH includes:
  • the user equipment acquires a second sequence set corresponding to the length of the pilot signal, where the second sequence set includes at least one sequence having the same length as the length of the pilot signal;
  • the user equipment determines the first sequence set from the second sequence set according to an algorithm negotiated in advance with the base station.
  • the user equipment is determined from the second sequence set according to an algorithm negotiated in advance with the base station Out of the first sequence set, comprising:
  • the user equipment acquires a preset phase shift value set corresponding to the second target sequence, the phase shift value set includes at least one phase shift value, and each of the phase shift values corresponds to one control information length;
  • the user equipment performs phase shifting on the second target sequence by using at least one phase shift value in the phase shift value set, to obtain a first sequence set corresponding to the phase shift value set, where the first The number of sequences in the sequence set is the same as the number of phase shift values in the set of phase shift values.
  • the first target sequence is a ZC sequence, an m sequence, or a Gold sequence.
  • an embodiment of the present invention provides a base station, including:
  • a first determining module configured to determine a first sequence set corresponding to a current physical downlink control channel PDCCH, where the first sequence set includes at least one sequence, the at least one sequence is orthogonal to each other, and each sequence corresponds to one control information length;
  • a second determining module configured to acquire target control that needs to be transmitted through a corresponding time slot of the PDCCH a length of the information, and determining, according to the length of the target control information, a sequence from the first sequence set as the first target sequence, wherein the length of the control information corresponding to the first target sequence is not less than the target control Length of information;
  • An information sending module configured to use the first target sequence determined by the second determining module as a pilot signal in a PDCCH corresponding time slot, and send the guide to a user equipment by using the PDCCH corresponding time slot Frequency signal and the target control information.
  • the first determining module includes:
  • a length determining unit configured to determine, according to the number of subcarriers occupied by the PDCCH, a length of a pilot signal in a corresponding slot of the PDCCH;
  • An acquiring unit configured to acquire a second sequence set corresponding to a length of the pilot signal, where the second sequence set includes at least one sequence having a length equal to a length of the pilot signal;
  • a set determining unit configured to determine the first sequence set from the second sequence set according to an algorithm negotiated in advance with the user equipment.
  • the set determining unit is specifically configured to:
  • the second determining The module is specifically used to:
  • the information sending module is specifically configured to:
  • the target control information is length-compensated according to the length of the control information corresponding to the first target sequence, and the pilot signal and the compensated target control information are sent to the user equipment by using the PDCCH corresponding time slot.
  • the first target sequence is a ZC sequence, an m sequence, or a Gold sequence.
  • an embodiment of the present invention provides a user equipment, including:
  • a receiving module configured to receive a pilot signal in a corresponding slot of a current physical downlink control channel PDCCH, where the pilot signal includes a first target sequence
  • a set determining module configured to determine a first sequence set corresponding to the PDCCH, where the first sequence set includes at least one sequence, the at least one sequence is orthogonal to each other, and each sequence corresponds to a control information length;
  • a sequence determining module configured to separately calculate a correlation between each sequence in the first sequence set and the first target sequence, and determine at least one sequence of the first sequence set and the first target sequence The most relevant sequence
  • a length determining module configured to determine, according to the length of the control information corresponding to the sequence with the highest correlation determined by the sequence determining module, the length of the target control information that needs to be received, and decode the corresponding time slot of the PDCCH to obtain Target control information corresponding to the length.
  • the set determining module includes:
  • a first determining unit configured to determine, according to the number of subcarriers occupied by the PDCCH, a length of the pilot signal
  • An acquiring unit configured to acquire a second sequence set corresponding to a length of the pilot signal, where the second sequence set includes at least one sequence having a length equal to a length of the pilot signal;
  • a second determining unit configured to determine, according to an algorithm negotiated in advance with the base station, the first sequence set from the second sequence set.
  • the second determining unit is specifically configured to:
  • the first target sequence is a ZC sequence, an m sequence, or a Gold sequence.
  • an embodiment of the present invention provides a base station, including: a communication interface, a memory, and a processor, where the processor is respectively connected to the communication interface and the memory;
  • the memory is used to store driver software
  • the processor reads the driver software from the memory and executes it under the action of the driver software:
  • the first sequence set is determined from the second sequence set according to an algorithm negotiated in advance with the user equipment.
  • the processor is configured to perform the algorithm according to the foregoing negotiation with the user equipment, Determining the first sequence set in the second sequence set, performing the following steps:
  • the phase shift value set includes at least one phase shift value, and each of the phase shift values corresponds to one control information length;
  • the number of sequences is the same as the number of phase shift values in the set of phase shift values.
  • the processor is Performing the determining, according to the length of the target control information, a sequence from the first sequence set as the first target sequence, and performing the following steps:
  • the processor is configured to send the pilot signal and the target control information to the user equipment by using the PDCCH corresponding time slot, and specifically perform the following steps:
  • the target control information is length-compensated according to the length of the control information corresponding to the first target sequence, and the pilot signal and the compensated target control information are sent to the user equipment by using the PDCCH corresponding time slot.
  • the first target sequence is a ZC sequence, an m sequence, or a Gold sequence.
  • an embodiment of the present invention provides a user equipment, including:
  • a communication interface a communication interface, a memory, and a processor, the processor being coupled to the communication interface and the memory, respectively Pick up; among them,
  • the memory is used to store driver software
  • the processor reads the driver software from the memory and executes it under the action of the driver software:
  • the first sequence set includes at least one sequence, the at least one sequence is orthogonal to each other, and each sequence corresponds to a control information length;
  • the length of the control information corresponding to the sequence with the highest correlation is determined as the length of the target control information that needs to be received, and the PDCCH corresponding time slot is decoded to obtain target control information corresponding to the length.
  • the first sequence set is determined from the second sequence set according to an algorithm negotiated in advance with the base station.
  • the processor is configured to perform the algorithm according to the negotiation with the base station in advance, from the second Determining the first sequence set in the sequence set, and performing the following steps:
  • the phase shift value set includes at least one phase shift value, and each of the phase shift values corresponds to one control information length;
  • Phase shifting the second target sequence by at least one phase shift value in the set of phase shift values Obtaining a first sequence set corresponding to the set of phase shift values, wherein the number of sequences in the first sequence set is the same as the number of phase shift values in the set of phase shift values.
  • the first target sequence is a ZC sequence, an m sequence, or a Gold sequence.
  • the base station may determine, according to the length of the target control information that is transmitted by the current PDCCH corresponding time slot, the first target sequence whose control information length is not less than the length of the target control information, from the sequence set corresponding to the current PDCCH. And using the first target sequence as a pilot signal of the PDCCH slot, so that the pilot signal and the target control information are sent to the user equipment, to indicate, by the sequence, the length of the target control information that the user equipment needs to receive currently. . Therefore, when receiving the pilot signal of the PDCCH slot, that is, the first target sequence, the user equipment can correlate each sequence of the sequence set corresponding to the PDCCH with the first target sequence.
  • the length of the control information corresponding to the highest-precision sequence is determined as the length of the target control information to be received, and the PDCCH slot is decoded to obtain the target control information corresponding to the length.
  • the embodiment of the present invention indicates the length of the control information by using a sequence corresponding to the length of the control information as a pilot signal, so that the UE cost and power consumption are reduced, and thus can be applied to the narrowband system.
  • FIG. 1 is a schematic structural diagram of a system according to an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart of a method for transmitting control information according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a pilot signal according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of another method for transmitting control information according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of still another method for transmitting control information according to an embodiment of the present invention.
  • FIG. 6 is a schematic flowchart of still another method for transmitting control information according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of a user equipment according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of a control information transmission system according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of another base station according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of another user equipment according to an embodiment of the present invention.
  • a user equipment may also be called a terminal, a mobile station ("MS") or a mobile terminal (Mobile Terminal).
  • the user equipment may be a mobile phone (or "cellular" phone), a computer with a mobile terminal, or a small device with wireless signal receiving and transmitting capabilities, etc.
  • the user device may also be portable, pocket, handheld , a built-in or in-vehicle mobile device, or a smart water meter, home appliance, monitoring instrument, etc. that can wirelessly access the network.
  • the base station is a base station in the Internet of Things narrowband communication system, such as OFDMA, and is simply referred to as a base station in the following embodiments.
  • FIG. 1 is a schematic diagram of an application scenario according to an embodiment of the present invention.
  • a base station in a narrowband system such as an OFDMA system, a base station and a plurality of user equipments are included (only two of the user equipments are exemplarily shown in FIG. 1).
  • the base station can send control information to the user equipment through the physical downlink control channel PDCCH, and inform the user equipment of the length of the control information, and after the user equipment parses the length of the control information that needs to be received, the base station can decode the current PDCCH time slot. Control information corresponding to the length.
  • the embodiment of the invention provides a method for transmitting control information, a related device and a system, which can indicate the length of the control information by using a sequence corresponding to the length of the control information as a pilot signal, so that the design cost and energy consumption of the UE are reduced. So that it can be applied to narrowband systems.
  • FIG. 2 is a schematic flowchart of a method for transmitting control information according to an embodiment of the present invention. Specifically, as shown in FIG. 2, the method in the embodiment of the present invention includes:
  • the base station determines a first sequence set corresponding to the current physical downlink control channel PDCCH.
  • the first sequence set corresponding to the PDCCH may be determined by the base station and the user equipment according to some parameters of the PDCCH.
  • the determining, by the base station, the first sequence set corresponding to the current PDCCH, where the determining, by the base station, the length of the pilot signal in the corresponding time slot of the PDCCH according to the number of subcarriers occupied by the PDCCH The base station acquires a second sequence set corresponding to the length of the pilot signal, the second sequence set includes at least one sequence having the same length as the length of the pilot signal; the base station according to the foregoing
  • the algorithm negotiated by the user equipment determines the first sequence set from the second sequence set.
  • sequence of the embodiment of the present invention may include, but is not limited to, an m sequence, a Gold sequence, and a ZC (Zadoff-Chu) sequence.
  • the base station may obtain the number of subcarriers occupied by the PDCCH that is used to transmit the control information that needs to be transmitted, that is, the target control information, and determine the length of the pilot signal that is used to obtain the corresponding slot of the PDCCH according to the number of the subcarriers, for example, Obtaining the length of the pilot signal according to the number of the subcarriers is K (bit bit), and obtaining a preset set of the second sequence of length K.
  • the second sequence set includes at least one sequence of length K, a correspondence between the number of the subcarriers and a length of the pilot signal, and a correspondence between a length of the pilot signal and a second sequence set of the corresponding length. Relationships can be pre-configured.
  • the parameters such as the cell ID, the frame number of the current subframe corresponding to the PDCCH, and the like may be selected according to the preset sequence.
  • a sequence subset that is, a first sequence set, is determined in the second sequence set.
  • the cell ID is the ID of the base station cell.
  • the first sequence set includes at least one sequence, and the at least one sequence is orthogonal to each other, and each sequence corresponds to a control information length, and the length of the control information corresponding to each sequence can be pre-configured.
  • the base station acquires a length of target control information that needs to be transmitted by using the PDCCH corresponding time slot, and determines a sequence from the first sequence set as the first target sequence according to the length of the target control information.
  • the length of the control information corresponding to the first target sequence is not less than the target control information. length.
  • the base station may determine, according to a preset screening rule, a first target sequence from each sequence in the first sequence set, to indicate the length of the target control information.
  • the length of the control information indicated by the first target sequence is not lower than the length of the target control information.
  • the base station determines, according to the length of the target control information, a sequence from the first sequence set as the first target sequence, which may be specifically: the base station controls the first sequence set correspondingly.
  • the length of the information length is not less than the length of the target control information, and the sequence corresponding to the length of the control information having the smallest length is determined as the first target sequence.
  • the length of the target control information can be indicated by a sequence corresponding to the length of the control information closest to the length of the target control information.
  • the base station uses the first target sequence as a pilot signal in a PDCCH corresponding time slot, and sends the pilot signal and the target control information to a user equipment by using the PDCCH corresponding time slot.
  • narrowband OFDMA systems typically use one or more symbol symbols as pilot signals in normal time slots for channel estimation to enhance coverage.
  • the first target sequence corresponding to the length of the target control information is used as a pilot signal, so that the pilot signal can be used to indicate the length of the control information in addition to the channel estimation.
  • FIG. 3 is a schematic structural diagram of a pilot signal according to an embodiment of the present invention.
  • the narrowband OFDMA uses two symbols as pilot signals in normal time slots (other symbols are data symbols for carrying control information and the like), and the first target sequence can serve as the two Any pilot signal of the pilot signal, and transmitting control information and its corresponding pilot signal to the user equipment through the PDCCH slot.
  • the base station sends the pilot signal and the target control information to the user equipment by using the PDCCH corresponding time slot, which may be specifically: the base station according to the length of the control information corresponding to the first target sequence
  • the target control information is length-compensated, and the pilot signal and the compensated target control information are sent to the user equipment by using the PDCCH corresponding time slot.
  • the target control information may be complemented with 0, and the length of the target control information is compensated to the first target sequence.
  • the compensated target control information and the pilot signal corresponding to the first target sequence are sent to the user equipment to indicate the target control information by using the first target sequence. length. Therefore, when receiving the first target sequence, the user equipment can parse the length of the target control information according to the first target sequence, and decode the PDCCH slot to obtain target control information corresponding to the length.
  • FIG. 4 is a schematic flowchart of another method for transmitting control information according to an embodiment of the present invention. Specifically, as shown in FIG. 4, the method in the embodiment of the present invention includes:
  • S201 The user equipment receives a pilot signal in a corresponding time slot of a current physical downlink control channel PDCCH, where the pilot signal includes a first target sequence.
  • the length information of the control information needs to be parsed, so that the current PDCCH is decoded according to the length information, so that the control information corresponding to the length information is obtained.
  • the user equipment can receive the pilot signal of the current PDCCH time slot, and the pilot signal is a sequence, which is recorded as a first target sequence, where the sequence is used to indicate that the control information, that is, the length of the target control information, needs to be received, and the user equipment passes Obtaining the length indicated by the first target sequence can obtain the length of the target control information.
  • S202 The user equipment determines a first sequence set corresponding to the PDCCH.
  • the first sequence set corresponding to the PDCCH may be determined by the base station and the user equipment according to some parameters of the PDCCH.
  • the user equipment acquires a second sequence set corresponding to the length of the pilot signal, where the second sequence set includes at least one sequence having the same length as the length of the pilot signal; the user equipment according to the base station in advance a negotiated algorithm that determines the first set of sequences from the second set of sequences.
  • sequence of the embodiments of the present invention may include, but is not limited to, an m sequence, a Gold sequence, and a ZC sequence.
  • the user equipment may obtain the number of subcarriers occupied by the PDCCH for transmitting the control information that is currently required to be received, that is, the target control information, and determine the length of the pilot signal of the corresponding slot of the PDCCH according to the number of the subcarriers, Thereby, a preset set of sequences identical to the length of the pilot signal, that is, a second sequence set, is obtained. Further, the user equipment may obtain a first sequence set corresponding to the PDCCH from the second sequence set according to a parameter such as a cell ID and a frame number, and the acquiring manners of the first sequence set and the second sequence set may be referred to.
  • a parameter such as a cell ID and a frame number
  • the first sequence set includes at least one sequence, the at least one sequence is orthogonal to each other, and each sequence corresponds to a control information length.
  • S203 The user equipment separately calculates a correlation between each sequence in the first sequence set and the first target sequence, and determines that the first target sequence is in at least one sequence of the first sequence set. The most relevant sequence.
  • the user equipment determines, according to the length of the control information corresponding to the sequence with the highest correlation, the length of the target control information that needs to be received, and decodes the corresponding time slot of the PDCCH to obtain target control corresponding to the length. information.
  • the user equipment may calculate a correlation between each sequence in the first sequence set and the first target sequence in the received pilot signal, and determine the The sequence with the highest correlation of the first target sequence, if the correlation exceeds a sequence corresponding to a certain preset threshold, the length of the control information indicated by the sequence may be the length of the target control information to be received, and may be controlled according to the control.
  • the information length decodes the PDCCH slot to obtain the target control information corresponding to the length of the control information.
  • the base station may determine, according to the length of the target control information that is transmitted by the current PDCCH corresponding time slot, the first target sequence whose control information length is not less than the length of the target control information, from the sequence set corresponding to the current PDCCH. And using the first target sequence as a pilot signal of the PDCCH slot, so that the pilot signal and the target control information are sent to the user equipment, to indicate, by the sequence, the length of the control information that the user equipment needs to receive currently. Therefore, when receiving the pilot signal of the PDCCH slot, that is, the first target sequence, the user equipment can correlate each sequence of the sequence set corresponding to the PDCCH with the first target sequence.
  • the length of the control information corresponding to the highest-precision sequence is determined as the length of the target control information to be received, and the PDCCH slot is decoded to obtain the target control information corresponding to the length.
  • the embodiment of the present invention indicates the length of the control information by using a sequence corresponding to the length of the control information as a pilot signal, so that the UE cost and power consumption are reduced, and thus can be applied to the narrowband system.
  • FIG. 5 is a schematic flowchart of still another method for transmitting control information according to an embodiment of the present invention. Specifically, as shown in FIG. 5, the method in the embodiment of the present invention includes:
  • the base station determines, according to the number of subcarriers occupied by the current PDCCH, the PDCCH pair. The length of the pilot signal in the time slot.
  • the base station acquires a second sequence set corresponding to a length of the pilot signal, where the second sequence set includes at least one sequence having the same length as the length of the pilot signal.
  • sequence may be an m sequence, a Gold sequence, a ZC sequence, or the like.
  • the embodiment of the present invention exemplifies the sequence as a ZC sequence.
  • the base station may obtain the number of subcarriers occupied by the PDCCH that is used to transmit the control information that needs to be transmitted, that is, the target control information, and determine the length of the pilot signal that is used to obtain the corresponding slot of the PDCCH according to the number of the subcarriers, for example, Obtaining the length of the pilot signal according to the number of subcarriers is K (bit bit), and obtaining a preset set of ZC sequences of length K, that is, a second sequence set.
  • the second sequence set includes at least one ZC sequence of length K, and the correspondence between the number of the subcarriers and the length of the pilot signal, and the length of the pilot signal and the corresponding length of the pilot signal.
  • the correspondence of sequence sets can be pre-configured.
  • the base station determines, according to an algorithm negotiated in advance with the user equipment, a sequence from the second sequence set as a second target sequence.
  • the parameters such as the cell ID, the frame number of the current subframe corresponding to the PDCCH, and the like may be selected according to the preset sequence.
  • a ZC sequence is determined as a second target sequence in the set of two sequences.
  • the cell ID is the ID of the base station cell.
  • the base station can calculate the sum of the cell ID plus the frame number to obtain the sum of the sum and the number of sequences in the sequence set as the sequence number Q of the second target sequence (the second sequence)
  • Each ZC sequence in the set corresponds to a serial number), so that the ZC sequence corresponding to the serial number Q in the sequence set is determined as the second target sequence, and the second sequence set can be determined according to K and Q.
  • the second target sequence can be determined according to K and Q.
  • the base station acquires a preset phase shift value set corresponding to the second target sequence, where the phase shift value set includes at least one phase shift value, and each of the phase shift values corresponds to one control information length.
  • the base station performs phase shifting on the second target sequence by using at least one phase shift value in the phase shift value set, to obtain a first sequence set corresponding to the phase shift value set.
  • the number of sequences in the first sequence set is the same as the number of phase shift values in the set of phase shift values.
  • a phase shift value set including a plurality of phase shift values may be preset for each ZC sequence, and each phase shift value corresponds to one PDCCH length value, that is, a control information length.
  • the set of phase shift values corresponding to the second target sequence is a i
  • the set of phase shift values a i includes M kinds of phase shift values, that is, i ⁇ ⁇ 1, 2...M ⁇ , according to each phase shift value a i may be obtained by determining the phase shift value a i for the first target sequence ZC sequence (hereinafter referred to as phase shifting sequence) after the phase shift, determining a i to obtain a set of sequences based on the phase shift phase shift value set ⁇ K , Q, a i ⁇ , the first sequence set.
  • the plurality of phase shift sequences are orthogonal to each other, and the length of the control information corresponding to each phase shift sequence is the length of the control information corresponding to the phase shift value of the phase shift.
  • the ZC sequence as an example, a way to determine the ⁇ K, Q ⁇ sequence, that is, the second target sequence is as follows:
  • the base station acquires a length of target control information that needs to be transmitted through a corresponding time slot of the PDCCH.
  • the base station determines, in the length of the control information length corresponding to the first sequence set, a length that is not less than a length of the target control information, and a length corresponding to a length of the control information that is the smallest length, as a first target sequence.
  • the base station may select a length that is not less than the target control from multiple PDCCH lengths corresponding to the first sequence set (ie, control information length, assumed to be L i )
  • the length of the information and the length L are the smallest, and the phase shift sequence corresponding to the minimum L is taken as the first target sequence.
  • the first target sequence is a sequence obtained by phase-shifting the second target sequence by the phase shift value corresponding to the L in the phase shift value set.
  • the base station uses the first target sequence as a pilot signal in a corresponding slot of the PDCCH.
  • the base station controls the target according to the length of the control information corresponding to the first target sequence.
  • the information is length-compensated, and the pilot signal and the compensated target control information are sent to the user equipment by using the PDCCH corresponding time slot.
  • the first target sequence indicating the length of the control information may be used as a pilot signal of the PDCCH slot to indicate the current sequence by using the first sequence.
  • the transmitted control information is the length of the target control information
  • the length of the indication is the length corresponding to the first target sequence.
  • the target control information may be complemented with 0, and the length of the target control information is compensated to the L.
  • the compensated target control information and the pilot signal are sent to the user equipment through the PDCCH, so that the length of the target control information is L by the first target sequence. Therefore, when receiving the first target sequence, the user equipment can obtain the length of the target control information, that is, L, according to the first target sequence, and decode the PDCCH according to the L to obtain the target control information corresponding to the length.
  • FIG. 6 is a schematic flowchart of a method for transmitting control information according to an embodiment of the present invention. Specifically, as shown in FIG. 6 , the method in the embodiment of the present invention includes:
  • S401 The user equipment receives a pilot signal in a current PDCCH corresponding time slot, where the pilot signal includes a first target sequence.
  • sequence may be an m sequence, a Gold sequence, a ZC sequence, or the like.
  • the embodiment of the present invention exemplifies the sequence as a ZC sequence.
  • the user equipment determines the length of the pilot signal according to the number of subcarriers occupied by the PDCCH.
  • the user equipment acquires a second sequence set corresponding to a length of the pilot signal, where the second sequence set includes at least one sequence having the same length as the length of the pilot signal.
  • the correspondence between the number of the subcarriers and the length of the pilot signal, and the correspondence between the length of the pilot signal and the second sequence set of the corresponding length may be pre-configured.
  • S404 The user equipment determines, according to an algorithm negotiated in advance with the base station, a sequence as the second target sequence from the second sequence set.
  • the user equipment acquires a preset phase shift value set corresponding to the second target sequence.
  • the phase shift value set includes at least one phase shift value, and each of the phase shift values corresponds to one control information length.
  • S406 The user equipment performs phase shifting on the second target sequence by using at least one phase shift value in the phase shift value set, to obtain a first sequence set corresponding to the phase shift value set.
  • the number of sequences in the first sequence set is the same as the number of phase shift values in the set of phase shift values.
  • a phase shift value set including a plurality of phase shift values may be preset for each ZC sequence, and each phase shift value corresponds to one PDCCH length value, that is, a control information length.
  • the set of phase shift values corresponding to the second target sequence is a i
  • the set of phase shift values a i includes M kinds of phase shift values, that is, i ⁇ ⁇ 1, 2...M ⁇ , according to each phase shift value a i may be obtained by determining the phase shift value a i for the first target sequence ZC sequence (hereinafter referred to as phase shifting sequence) after the phase shift, determining a i to obtain a set of sequences based on the phase shift phase shift value set ⁇ K , Q, a i ⁇ , the first sequence set.
  • the plurality of phase shift sequences in the first sequence set are orthogonal to each other, and the length of the control information corresponding to each phase shift sequence is the length of the control information corresponding to the phase shift value of the
  • S407 The user equipment separately calculates a correlation between each sequence in the first sequence set and the first target sequence, and determines at least one sequence of the first sequence set and the first target sequence. The most relevant sequence.
  • the user equipment determines, according to the length of the control information corresponding to the sequence with the highest correlation, the length of the target control information that needs to be received, and decodes the corresponding time slot of the PDCCH to obtain target control corresponding to the length. information.
  • the user equipment may calculate a correlation between each sequence in the first sequence set and the first target sequence in the received pilot signal, and determine the The sequence with the highest correlation of the first target sequence, if the correlation exceeds the length of the control information indicated by the sequence corresponding to a certain preset threshold, and if L is assumed, the L may be used as the length of the target control information to be received, thereby The control information length L decodes the PDCCH slot, and obtains the target control information corresponding to the length L of the control information.
  • the base station may determine, according to the length of the target control information that is transmitted by the current PDCCH time slot, the length of the control information that is not less than the length of the target control information and the smallest length from the sequence set corresponding to the current PDCCH.
  • the target sequence is sent to the user equipment as a pilot signal of the PDCCH slot to indicate the length of the control information that the user equipment needs to receive through the sequence.
  • the user equipment receives the pilot signal of the PDCCH slot, that is, the first target sequence, the user equipment can correlate each sequence of the sequence set corresponding to the PDCCH with the first target sequence.
  • the length of the control information corresponding to the highest-precision sequence is determined as the length of the target control information to be received, and the PDCCH slot is decoded to obtain the target control information corresponding to the length.
  • the embodiment of the present invention indicates the length of the control information by using a sequence corresponding to the length of the control information as a pilot signal, so that the UE cost and power consumption are reduced, and thus can be applied to the narrowband system.
  • FIG. 7 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • the base station according to the embodiment of the present invention includes a first determining module 11, a second determining module 12, and information sending. Module 13. among them,
  • the first determining module 11 is configured to determine a first sequence set corresponding to the current physical downlink control channel PDCCH.
  • the first sequence set includes at least one sequence, the at least one sequence is orthogonal to each other, and each sequence corresponds to a control information length.
  • the first sequence set corresponding to the PDCCH may be determined by the base station and the user equipment according to some parameters of the PDCCH.
  • the first target sequence may be a ZC sequence, an m sequence, or a Gold sequence or other sequences, which is not limited in the embodiment of the present invention.
  • the second determining module 12 is configured to acquire a length of the target control information that needs to be transmitted by using the PDCCH corresponding time slot, and determine a sequence from the first sequence set according to the length of the target control information. A sequence of goals.
  • the length of the control information corresponding to the first target sequence is not less than the length of the target control information.
  • the information sending module 13 is configured to use the first target sequence determined by the second determining module 12 as a pilot signal in the PDCCH corresponding time slot, and send the corresponding time slot of the PDCCH to the user equipment. Transmitting the pilot signal and the target control information.
  • the information sending module 13 may use the first target sequence for indicating the length of the target control information as the current time slot. Pilot signal and further transmit the pilot signal and target control information The user equipment is sent to obtain the length of the target control information that needs to be received according to the first target sequence, so that the PDCCH slot is decoded and the target control information corresponding to the length is obtained.
  • the first determining module 11 may specifically include (not shown in the figure):
  • the length determining unit 111 is configured to determine, according to the number of subcarriers occupied by the PDCCH, a length of a pilot signal in a corresponding slot of the PDCCH;
  • the acquiring unit 112 is configured to acquire a second sequence set corresponding to the length of the pilot signal, where the second sequence set includes at least one sequence having the same length as the length of the pilot signal;
  • the set determining unit 113 is configured to determine the first sequence set from the second sequence set according to an algorithm negotiated in advance with the user equipment.
  • the length determining unit 111 may obtain the number of subcarriers occupied by the PDCCH that is used to transmit the control information that needs to be transmitted, that is, the target control information, and determine the pilot signal of the corresponding PDCCH according to the number of the subcarriers.
  • the length for example, the length of the pilot signal is determined to be K (bit bit) according to the number of the subcarriers.
  • the acquiring unit 112 obtains a preset set of the second sequence of length K.
  • the second sequence set includes at least one sequence of length K, a correspondence between the number of the subcarriers and a length of the pilot signal, and a correspondence between a length of the pilot signal and a second sequence set of the corresponding length.
  • Relationships can be pre-configured. Further, after the obtaining unit 112 determines the second sequence set of the length K corresponding to the number of the subcarriers, the set determining unit 113 may further filter the parameters, such as the cell ID, the current subframe corresponding to the PDCCH according to the preset sequence.
  • a parameter such as a frame number determines a sequence subset, that is, a first sequence set, from the second sequence set.
  • the cell ID is the ID of the base station cell.
  • the first sequence set includes at least one sequence, and the at least one sequence is orthogonal to each other, and each sequence corresponds to a control information length, and the length of the control information corresponding to each sequence can be pre-configured.
  • the second determining module 12 may be specifically configured to:
  • the second determining module 12 can obtain the length of the target control information that needs to be transmitted, And selecting, from the plurality of control information lengths corresponding to the first sequence set, a length of the control information whose length is not less than the length of the target control information and having the smallest length, and if L, the minimum L corresponding to the first sequence set may be corresponding.
  • the sequence is taken as the first target sequence. Thereby, a sequence corresponding to the length of the control information closest to the length of the target control information, that is, the first target sequence is obtained, to indicate the length of the target control information by the first target sequence.
  • the information sending module 13 may be specifically configured to:
  • the target control information is length-compensated according to the length of the control information corresponding to the first target sequence, and the compensated target control information is sent to the user equipment by using the PDCCH.
  • the target control information when the information sending module 13 detects that the length of the target control information is less than the length of the control information corresponding to the determined first target sequence, the target control information may be complemented by 0, and the length of the target control information is used. After the length of the control information corresponding to the first target sequence is compensated, the compensated target control information is sent to the user equipment to indicate the length of the target control information by using the first target sequence as the pilot signal. Therefore, when receiving the pilot signal, that is, the first target sequence, the user equipment can obtain the length of the target control information according to the first target sequence, and decode the PDCCH to obtain the target control information corresponding to the length.
  • the first target sequence may be specifically a ZC sequence
  • the set determining unit 113 may be specifically configured to:
  • the number of sequences in the first sequence set is the same as the number of phase shift values in the set of phase shift values.
  • each ZC sequence may correspond to a phase shift value set including a plurality of phase shift values, and each phase shift value corresponds to one PDCCH length value, that is, a control information length.
  • the set of phase shift values corresponding to the second target sequence is a i
  • the phase shift value set a i includes M kinds of phase shift values, that is, i ⁇ ⁇ 1, 2...M ⁇
  • the set determining unit 113 according to each phase shift values a i to obtain the first target may be determined by the sequence of phase shifting the ZC sequence a i value (hereinafter referred to as phase shifting sequence) phase-shifted, to obtain a i can be determined based on the set of phase shifting a shift value
  • phase shifting sequence ⁇ K, Q, a i ⁇ , that is, the first sequence set.
  • the plurality of phase shift sequences are orthogonal to each other, and the length of the control information corresponding to each phase shift sequence is the length of the control information corresponding to the phase shift
  • the user equipment of the embodiment of the present invention includes a receiving module 21 and a set determining module 22, as shown in FIG. Sequence determination module 23 and length determination module 24. among them,
  • the receiving module 21 is configured to receive a pilot signal in a corresponding slot of a current physical downlink control channel PDCCH, where the pilot signal includes a first target sequence.
  • the first target sequence may be a ZC sequence, an m sequence, or a Gold sequence or other sequences, which is not limited in the embodiment of the present invention.
  • the length information of the control needs to be parsed, so that the current PDCCH is decoded according to the length information, so that the control information corresponding to the length information is obtained.
  • the user equipment can receive the pilot signal of the current PDCCH time slot, that is, the first target sequence for indicating the length of the control information, by using the receiving module 21, so as to obtain the control information that needs to be received by parsing the first target sequence. Length information.
  • the set determining module 22 is configured to determine a first sequence set corresponding to the PDCCH.
  • the first sequence set includes at least one sequence, the at least one sequence is orthogonal to each other, and each sequence corresponds to a control information length.
  • the first sequence set corresponding to the PDCCH may be determined by the base station and the user equipment according to certain parameters of the PDCCH, such as a cell ID, a frame number, and the like.
  • the sequence determining module 23 is configured to separately calculate a correlation between each sequence in the first sequence set and the first target sequence, and determine at least one sequence in the first sequence set and the first A sequence with the highest correlation of the target sequence.
  • the length determining module 24 is configured to determine, according to the length of the control information corresponding to the sequence with the highest correlation determined by the sequence determining module 23, the length of the target control information that needs to be received, and the corresponding time slot of the PDCCH. Decoding is performed to obtain target control information corresponding to the length.
  • the sequence determining module 23 may calculate, by the sequence determining module 23, each sequence in the first sequence set and the first target sequence in the received pilot signal. Correlation and determining the sequence with the highest correlation with the first target sequence, If the correlation exceeds a sequence corresponding to a certain preset threshold, the length determining module 24 may use the length of the control information indicated by the sequence as the length of the target control information to be received, so that the PDCCH slot is performed according to the length of the control information. Decoding to obtain the target control information corresponding to the length of the control information.
  • the set determining module 22 may specifically include:
  • a first determining unit 221, configured to determine, according to the number of subcarriers occupied by the PDCCH, a length of the pilot signal
  • the acquiring unit 222 is configured to acquire a second sequence set corresponding to the length of the pilot signal, where the second sequence set includes at least one sequence having the same length as the length of the pilot signal;
  • the second determining unit 223 is configured to determine, according to an algorithm negotiated in advance with the base station, the first sequence set from the second sequence set.
  • the user equipment may obtain, by using the first determining unit 221, the number of subcarriers occupied by the PDCCH for transmitting the control information that is currently required to be received, that is, the target control information, and determine, according to the number of the subcarriers, the corresponding time slot of the PDCCH.
  • the length of the pilot signal so that the obtaining unit 222 can obtain a preset set of sequences identical to the length of the pilot signal, that is, the second sequence set.
  • the second determining unit 223 may further obtain a first sequence set corresponding to the PDCCH from the second sequence set according to a parameter such as a cell ID and a frame number.
  • the first target sequence may be specifically a ZC sequence
  • the second determining unit 223 may be specifically configured to:
  • each ZC sequence may correspond to a phase shift value set including a plurality of phase shift values, and each phase shift value corresponds to one PDCCH length value, that is, a control information length.
  • the second determining unit 223 can each phase shift value a i may be obtained by determining the phase shift value a i for the first target sequence ZC sequence (hereinafter referred to as phase shifting sequence) after the phase shift, a i based on the set value of the phase shift can be determined to give A phase shift sequence set ⁇ K, Q, a i ⁇ , that is, a first sequence set.
  • the plurality of phase shift sequences in the first sequence set are orthogonal to each other, and the length of the control information corresponding to each phase shift sequence is the length of the control information corresponding
  • the base station may determine, according to the length of the target control information that is transmitted by the current PDCCH corresponding time slot, the first target sequence whose control information length is not less than the length of the target control information, from the sequence set corresponding to the current PDCCH. And using the first target sequence as a pilot signal of the PDCCH slot, so that the pilot signal and the target control information are sent to the user equipment, to indicate, by the sequence, the length of the control information that the user equipment needs to receive currently. Therefore, when receiving the pilot signal of the PDCCH slot, that is, the first target sequence, the user equipment can correlate each sequence of the sequence set corresponding to the PDCCH with the first target sequence.
  • the length of the control information corresponding to the highest-precision sequence is determined as the length of the target control information to be received, and the PDCCH slot is decoded to obtain the target control information corresponding to the length.
  • the embodiment of the present invention indicates the length of the control information by using a sequence corresponding to the length of the control information as a pilot signal, so that the UE cost and power consumption are reduced, and thus can be applied to the narrowband system.
  • FIG. 9 is a schematic structural diagram of a control information transmission system according to an embodiment of the present invention.
  • the system may be specifically an OFDMA system.
  • the system may include a base station. 1 and user equipment 2; wherein
  • the base station 1 is configured to determine a first sequence set corresponding to a current PDCCH, where the first sequence set includes at least one sequence, the at least one sequence is orthogonal to each other, and each sequence corresponds to a control information length; And determining, by using a length of the target control information that is transmitted by the PDCCH corresponding time slot, a sequence from the first sequence set as a first target sequence according to the length of the target control information; using the first target sequence as The PDCCH corresponds to a pilot signal in a time slot, and sends the pilot signal and the target control information to the user equipment 2 through the PDCCH corresponding time slot;
  • the user equipment 2 is configured to receive a pilot signal in a corresponding time slot of the PDCCH, where the pilot signal includes a first target sequence, and determine a first sequence set corresponding to the PDCCH; Correlating the sequence of each of the first sequence set with the first target sequence, and determining a sequence having the highest correlation with the first target sequence in at least one sequence of the first sequence set; The length of the control information corresponding to the sequence with the highest correlation is determined as the length of the target control information that needs to be received, and the PDCCH corresponding time slot is decoded to obtain the target control information corresponding to the length.
  • sequence of the embodiments of the present invention may include, but is not limited to, an m sequence, a Gold sequence, and a ZC sequence.
  • the length of the control information corresponding to the first target sequence is not less than the length of the target control information.
  • the manner of determining the first sequence set and the first target sequence may be referred to the related description of the foregoing embodiment, and details are not described herein again.
  • the base station may determine, according to the length of the target control information that is transmitted by the current PDCCH corresponding time slot, the first target sequence whose control information length is not less than the length of the target control information, from the sequence set corresponding to the current PDCCH. And using the first target sequence as a pilot signal of the PDCCH slot, so that the pilot signal and the target control information are sent to the user equipment, to indicate, by the sequence, the length of the control information that the user equipment needs to receive currently. Therefore, when receiving the pilot signal of the PDCCH slot, that is, the first target sequence, the user equipment can correlate each sequence of the sequence set corresponding to the PDCCH with the first target sequence.
  • the length of the control information corresponding to the highest-precision sequence is determined as the length of the target control information to be received, and the PDCCH slot is decoded to obtain the target control information corresponding to the length.
  • the embodiment of the present invention indicates the length of the control information by using a sequence corresponding to the length of the control information as a pilot signal, so that the UE cost and power consumption are reduced, and thus can be applied to the narrowband system.
  • FIG. 10 is a schematic structural diagram of another base station according to an embodiment of the present invention.
  • the base station includes: a communication interface 300, a memory 200, and a processor 100, where the processor 100 and the processor 100 respectively The communication interface 300 and the memory 200 are connected.
  • the memory 200 may be a high speed RAM memory or a non-volatile memory such as at least one disk memory.
  • the communication interface 300, the memory 200, and the processor 100 may be connected to each other through a bus, or may be connected by other means. In the present embodiment, a bus connection will be described. among them,
  • the memory 200 is configured to store driver software
  • the processor 100 reads the driver software from the memory and executes it under the action of the driver software:
  • sequence of the embodiments of the present invention may include, but is not limited to, an m sequence, a Gold sequence, and a ZC sequence.
  • the processor 100 performs the determining the first sequence set corresponding to the current PDCCH, and specifically performing the following steps:
  • the first sequence set is determined from the second sequence set according to an algorithm negotiated in advance with the user equipment.
  • the processor 100 determines, according to an algorithm negotiated in advance with the user equipment, the first sequence set from the second sequence set, and specifically performs the following steps:
  • the phase shift value set includes at least one phase shift value, and each of the phase shift values corresponds to one control information length;
  • Phase shifting the second target sequence by at least one phase shift value in the set of phase shift values Obtaining a first sequence set corresponding to the set of phase shift values, wherein the number of sequences in the first sequence set is the same as the number of phase shift values in the set of phase shift values.
  • the processor 100 determines, according to the length of the target control information, a sequence from the first sequence set as the first target sequence, and specifically performs the following steps:
  • the processor 100 is configured to send the pilot signal and the target control information to the user equipment by using the PDCCH corresponding time slot, and specifically perform the following steps:
  • Target control information Length-compensating the target control information according to the length of the control information corresponding to the first target sequence, and transmitting the pilot signal and the compensation to the user equipment based on the communication interface 300 and using the PDCCH corresponding time slot.
  • FIG. 11 is a schematic structural diagram of another user equipment according to an embodiment of the present invention.
  • the user equipment includes: a communication interface 600, a memory 500, and a processor 400. 400 is connected to the communication interface 600 and the memory 500, respectively.
  • the memory 500 may be a high speed RAM memory or a non-volatile memory such as at least one disk memory.
  • the communication interface 600, the memory 500, and the processor 400 may be connected to each other through a bus, or may be connected by other means. In the present embodiment, a bus connection will be described. among them,
  • the memory 500 is configured to store driver software
  • the processor 400 reads the driver software from the memory and executes it under the action of the driver software:
  • the first sequence set includes at least one sequence, the at least one sequence is orthogonal to each other, and each sequence corresponds to a control information length;
  • the length of the control information corresponding to the sequence with the highest correlation is determined as the length of the target control information that needs to be received, and the PDCCH corresponding time slot is decoded to obtain target control information corresponding to the length.
  • sequence of the embodiments of the present invention may include, but is not limited to, an m sequence, a Gold sequence, and a ZC sequence.
  • the processor 400 is configured to determine the first sequence set corresponding to the PDCCH, and specifically perform the following steps:
  • the first sequence set is determined from the second sequence set according to an algorithm negotiated in advance with the base station.
  • the processor 400 determines, according to an algorithm negotiated in advance with the base station, the first sequence set from the second sequence set, and specifically performs the following steps:
  • the phase shift value set includes at least one phase shift value, and each of the phase shift values corresponds to one control information length;
  • the number of sequences is the same as the number of phase shift values in the set of phase shift values.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be Electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as the unit may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. . Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
  • the above software functional unit is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform the methods of the various embodiments of the present invention. Part of the steps.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

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Abstract

La présente invention concerne, selon des modes de réalisation, un procédé de transmission d'informations de commande et un dispositif associé, le procédé comprenant les étapes consistant : à déterminer, grâce à une station de base, un premier ensemble de séquences correspondant à un canal de commande de liaison descendante physique (PDCCH) actuel, le premier ensemble de séquences comprenant au moins une séquence en son sein, la ou les séquences étant mutuellement orthogonales, et chaque séquence correspondant à une longueur d'informations de commande ; à acquérir, grâce à la station de base, une longueur d'informations de commande cibles nécessaires à une transmission pendant un créneau horaire correspondant au PDCCH, et à déterminer, en fonction de la longueur des informations de commande cibles, à partir du premier ensemble de séquences, une séquence en tant que première séquence cible ; et à considérer, grâce à la station de base, la première séquence cible comme un signal pilote dans le créneau horaire correspondant au PDCCH, et à transmettre, à un équipement utilisateur (UE), le signal pilote et les informations de commande cibles pendant le créneau horaire correspondant au PDCCH. La présente invention peut donner l'instruction à une longueur d'informations de commande en considérant une séquence correspondant à la longueur d'informations de commande comme un signal pilote, ce qui permet de réduire les coûts de conception et la consommation d'énergie d'un UE.
PCT/CN2015/088524 2015-08-31 2015-08-31 Procédé de transmission d'informations de commande et dispositif associé WO2017035719A1 (fr)

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