[go: up one dir, main page]

WO2017193382A1 - Dispositif et procédé de réception ou de transmission d'informations de commande - Google Patents

Dispositif et procédé de réception ou de transmission d'informations de commande Download PDF

Info

Publication number
WO2017193382A1
WO2017193382A1 PCT/CN2016/082071 CN2016082071W WO2017193382A1 WO 2017193382 A1 WO2017193382 A1 WO 2017193382A1 CN 2016082071 W CN2016082071 W CN 2016082071W WO 2017193382 A1 WO2017193382 A1 WO 2017193382A1
Authority
WO
WIPO (PCT)
Prior art keywords
frequency domain
domain resource
terminal device
base station
control information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2016/082071
Other languages
English (en)
Chinese (zh)
Inventor
李�远
吕永霞
李超君
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to PCT/CN2016/082071 priority Critical patent/WO2017193382A1/fr
Priority to CN201680085434.3A priority patent/CN109076512B/zh
Publication of WO2017193382A1 publication Critical patent/WO2017193382A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present invention relates to communication technologies, and in particular, to a method and a device for transmitting and receiving control information.
  • the resource allocation is based on the Transmission Time Interval (TTI), and the length of one TTI is 14 orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, The abbreviation OFDM) symbol, that is, a 1 ms subframe, contains two slots, each of which is 7 OFDM symbols.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the Release 14 technology introduces a Latency Reduction technology to shorten the time domain granularity of resource allocation to a short transmission time interval (short transmission time interval, sTTI for short). ), reducing the time of grouping and demodulation coding, thereby achieving the purpose of reducing the physical layer air interface delay.
  • the optional length that the sTTI may support includes 7 OFDM symbols or 2 OFDM symbols or 3 & 4 OFDM symbols.
  • each slot contains two sTTIs, and the first sTTI is 3 OFDM in length.
  • the second sTTI is 4 OFDM symbols in length.
  • the control information contained in the control channel is divided into two levels of downlink control information (Downlink Control Information, DCI for short), the first level
  • the DCI that is, the slow DCI (slow DCI) includes control information that is slowly changing in the time domain, such as frequency domain resource allocation information, and optionally, time-frequency resource information occupied by the second-level DCI; the information indicated in the Slow DCI is All sTTIs included in a 1ms subframe are applicable;
  • the second-level DCI that is, Fast DCI, contains control information specific to each sTTI, such as a Hybrid Automatic Repeat ReQuest (HARQ) process number.
  • HARQ Hybrid Automatic Repeat ReQuest
  • Uplink grant referred to as UL grant
  • the UL grant is a scheduling indication for an uplink sTTI or a legacy 1 ms TTI after the current downlink sTTI.
  • the terminal device jointly determines all downlink control information by using the detected slow DCI and fast DCI.
  • the terminal device needs to detect the slow DCI and the fast DCI to obtain All the control information is received, and the data information of the Short Physical Downlink Shared Channel (SPDSCH) of the sTTI is received, or the Physical Uplink Shared Channel (PUSCH) or the short physical layer uplink is sent.
  • the data information of the shared channel sPUSCH Therefore, when the base station is slow DCI, it is required to estimate whether there is a downlink service or uplink scheduling requirement for the user in the 1 ms subframe. If there is no downlink service or uplink scheduling requirement for a terminal device, the base station is in the slow DCI.
  • the frequency domain resource allocation information in the current subframe for the terminal device is not included.
  • the base station does not include control information for a certain terminal device in the slow DCI, and needs to temporarily send downlink data or uplink scheduling information for the terminal device during the 1 ms subframe transmission, the previously transmitted slow DCI does not include the If the control information of the terminal device is used, the terminal device cannot obtain the downlink resource allocation information or the uplink resource scheduling information. Even if the base station transmits and the terminal device correctly receives the fast DCI, the terminal device cannot correctly receive the sPDSCH data due to the lack of the resource allocation information. The information or the data information of the uplink (s) PUSCH is transmitted, resulting in an increase in the delay of the downlink transmission or the uplink transmission.
  • the embodiment of the present invention provides a method and a device for transmitting and receiving control information, which is used to solve the problem that the downlink DCI sent by the base station does not include the control information of the terminal device in the prior art, and the delay of the downlink transmission or the uplink transmission is large. problem.
  • an embodiment of the present invention provides a method for receiving control information, including:
  • the terminal device detects second control information, where the second control information includes second frequency domain resource allocation information
  • the terminal device detects at least one of the first control information and the third control information, where the first control information includes first frequency domain resource allocation information;
  • the terminal device performs data transmission with the base station according to the first frequency domain resource allocation information and/or the second frequency domain resource allocation information.
  • the terminal device detects the second control information, and detects at least one of the first control information and the third control information; the second control information includes the second frequency domain resource allocation information.
  • the first control information includes first frequency domain resource allocation information; the terminal device performs data transmission with the base station according to the first frequency domain resource allocation information and/or the second frequency domain resource allocation information, even if the terminal device has In the case of sudden business, it can also be based on
  • the first frequency domain resource allocation information included in the first control information is used for data transmission with the base station, which solves the problem that the delay of the downlink transmission or the uplink transmission is caused by the slow DCI sent by the base station not including the control information of the terminal equipment in the prior art. Big problem.
  • the second control information is corresponding to the at least one TTI, and the first control information and the third control information are used to indicate that the terminal device is The first TTI performs data transmission with the base station, and the at least one TTI includes the first TTI.
  • the terminal device detects at least one of the first control information and the third control information, include:
  • the terminal device detects the third control information
  • the terminal device performs data transmission with the base station according to the first frequency domain resource allocation information and/or the second frequency domain resource allocation information, including:
  • the terminal device performs data transmission with the base station according to the second frequency domain resource allocation information
  • the terminal device If the terminal device does not detect the second control information, the terminal device detects the first control information
  • the terminal device performs data transmission with the base station according to the first frequency domain resource allocation information and/or the second frequency domain resource allocation information, including:
  • the terminal device performs data transmission with the base station according to the first frequency domain resource allocation information.
  • the receiving method of the control information provided by the foregoing embodiment if the terminal device detects the second control information, performing data transmission with the base station according to the second frequency domain resource allocation information included in the second control information; If the terminal device does not detect the second control information, the data transmission may be performed directly with the base station according to the first frequency domain resource allocation information.
  • the terminal device detects at least one of the first control information and the third control information, include:
  • the terminal device detects the second control information, and the terminal device detects the first control Information
  • the terminal device performs data transmission with the base station according to the first frequency domain resource allocation information and/or the second frequency domain resource allocation information, including:
  • the terminal device performs data transmission with the base station according to the first frequency domain resource allocation information and the second frequency domain resource allocation information.
  • the first frequency domain resource allocation information and the second frequency domain resource allocation information may be The base station performs data transmission, or performs data transmission with the base station only according to the first frequency domain resource allocation information.
  • the terminal device performs data transmission with the base station according to the first frequency domain resource allocation information, including:
  • the frequency domain resource allocation set includes a preset or a base station, the frequency domain resource allocation set includes at least two frequency domain resources, and the first frequency domain resource allocation information includes the first frequency domain resource. a sequence number in the frequency domain resource allocation set;
  • the terminal device performs data transmission with the base station by using the first frequency domain resource.
  • the terminal device may determine, according to the first frequency domain resource allocation information and the frequency domain resource allocation set, the first frequency domain resource, by using the first frequency domain resource and the base station The data transmission is performed. Since the frequency domain resource allocation set is preset or configured by the base station, the signaling overhead of the first control information may be saved.
  • the detecting, by the terminal device, the first control information includes:
  • the terminal device detects the first control information according to the time-frequency resource detection set, where the time-frequency resource detection set includes at least one time-frequency resource location, and the at least one time-frequency resource location includes the first control The location of the time-frequency resource occupied by the information.
  • the resource detection set detects the first control information, which reduces the complexity of blind detection of the terminal device.
  • the time-frequency resource detection set is preset or configured by a base station.
  • the detecting, by the terminal device, the first control information includes:
  • the terminal device detects the first control information according to a cell radio network temporary identifier C-RNTI.
  • the first frequency domain resource allocation information includes downlink frequency domain resource allocation information
  • the terminal device performs data transmission with the base station according to the first frequency domain resource allocation information, and specifically includes:
  • the terminal device receives downlink data sent by the base station according to the downlink frequency domain resource allocation information.
  • the first frequency domain resource allocation information includes uplink frequency domain resource allocation information
  • the terminal device performs data transmission with the base station according to the first frequency domain resource allocation information, and specifically includes:
  • the terminal device sends uplink data to the base station according to the uplink frequency domain resource allocation information.
  • the terminal device when performing data transmission with the base station according to the first frequency domain resource allocation information, the modulation and coding strategy MCS of the data transmission is a preset or MCS configured by the base station.
  • the method for receiving the control information provided by the foregoing embodiment may save the signaling overhead of the first control information because the MCS is preset or the MCS configured by the base station.
  • the first control information further includes indication information, where the indication information is used to indicate
  • the first control information includes the first frequency domain resource allocation information.
  • the first control information may include the first control information or the third control information by including the indication information.
  • an embodiment of the present invention provides a method for sending control information, including:
  • the base station generates first control information, where the first control information includes first frequency domain resource allocation information, and the first frequency domain resource allocation information is used to indicate that the terminal device performs data transmission with the base station;
  • the base station sends the first control information to the terminal device.
  • the method further includes:
  • the base station generates second control information, where the second control information corresponds to at least one TTI; the second control information includes second frequency domain resource allocation information; and the second frequency domain resource allocation information is used to indicate the terminal
  • the device performs data transmission with the base station;
  • the at least one TTI includes a first TTI, and the first TTI includes the TTI corresponding to the first control information indicating that the terminal device performs data transmission with the base station;
  • the base station sends the second control information to the terminal device.
  • the first frequency domain resource allocation information includes downlink frequency domain resource allocation information
  • the first frequency domain resource allocation information is used to indicate that the terminal device performs data transmission with the base station, including:
  • the first frequency domain resource allocation information is used to instruct the terminal device to receive downlink data sent by the base station.
  • the first frequency domain resource allocation information includes uplink frequency domain resource allocation information
  • the first frequency domain resource allocation information is used to indicate that the terminal device performs data transmission with the base station, including:
  • the first frequency domain resource allocation information is used to instruct the terminal device to send uplink data to the base station.
  • the first frequency domain resource allocation information includes a frequency domain resource allocation set of the first frequency domain resource Serial number in
  • the frequency domain resource allocation set is preset or configured by a base station, and the frequency domain resource allocation set includes at least two sets of frequency domain resources; the first frequency domain resource is data transmission between the terminal device and the base station. resource of.
  • the method further includes:
  • the base station sends the time-frequency resource detection set to the terminal device, where the time-frequency resource detection set includes at least one time-frequency resource location, where the at least one time-frequency resource location includes the time occupied by the first control information. Frequency resource location.
  • the first control information further includes indication information, where the indication information is used to indicate the first The first frequency domain resource allocation information is included in a control information.
  • the first frequency domain resource allocation information is used to indicate that the terminal device performs data transmission with the base station
  • the modulation and coding policy MCS of the data transmission is a preset or base station configured MCS.
  • an embodiment of the present invention provides a method for receiving control information, including:
  • the terminal device detects the first control information sent by the base station
  • the terminal device Determining, by the terminal device, the first frequency domain resource according to the second frequency domain resource occupied by the first control information; the second frequency domain resource has a corresponding relationship with the first frequency domain resource;
  • the terminal device performs data transmission with the base station by using the first frequency domain resource.
  • the terminal device detects the first control information sent by the base station by using the method for receiving the control information provided by the third aspect; the terminal device determines the first frequency domain resource according to the second frequency domain resource occupied by the first control information; The second frequency domain resource has a corresponding relationship with the first frequency domain resource; the terminal device performs data transmission with the base station by using the first frequency domain resource, even if the terminal device has a burst service in the first TTI
  • the data transmission may be performed with the base station according to the first frequency domain resource allocation information included in the first control information, and the downlink transmission or uplink is determined in the prior art because the slow DCI sent by the base station does not include the control information of the terminal device.
  • the delay of transmission is large question.
  • the corresponding relationship includes:
  • the second frequency domain resource includes the at least one second frequency domain resource unit, the first frequency domain resource includes the frequency domain resource group, and the frequency domain resource group includes at least one first frequency domain resource. unit;
  • the first frequency domain resource unit includes at least one resource particle RE
  • the second frequency domain resource unit includes at least one resource particle RE.
  • the first frequency domain resource unit includes an RE or a resource block RB or a resource block group RBG, where The two-frequency domain resource unit includes a resource particle RE or a resource block RB or a control channel element CCE.
  • the corresponding relationship includes:
  • the detecting, by the terminal device, the first control information that is sent by the base station specifically includes:
  • the terminal device detects the first control information according to the time-frequency resource detection set, where the time-frequency resource detection set includes at least one time-frequency resource location, and the at least one time-frequency resource location includes the first control The location of the time-frequency resource occupied by the information;
  • the time-frequency resource detection set is preset or configured by a base station.
  • the terminal device detects the first control information according to the time-frequency resource detection set, which reduces the complexity of blind detection of the terminal device.
  • the first frequency domain resource includes a downlink frequency domain resource
  • the terminal device performs data transmission with the base station by using the first frequency domain resource, and specifically includes:
  • the terminal device receives downlink data sent by the base station by using the downlink frequency domain resource.
  • the first frequency domain resource includes an uplink frequency domain resource
  • the terminal device performs data transmission with the base station by using the first frequency domain resource, and specifically includes:
  • the terminal device sends uplink data to the base station by using the uplink frequency domain resource.
  • an embodiment of the present invention provides a method for sending control information, including:
  • the base station generates first control information, where the first control information is used to indicate that the terminal device performs data transmission with the base station by using a first frequency domain resource, where the first frequency domain resource is determined by the second frequency domain resource.
  • the second frequency domain resource has a corresponding relationship with the first frequency domain resource, and the second frequency domain resource includes a frequency domain resource occupied by the first control information;
  • the base station sends the first control information to the terminal device.
  • the corresponding relationship includes:
  • the second frequency domain resource includes the at least one second frequency domain resource unit, the first frequency domain resource includes the frequency domain resource group, and the frequency domain resource group includes at least one first frequency domain resource. unit;
  • the first frequency domain resource unit includes at least one resource particle RE
  • the second frequency domain resource unit includes at least one resource particle RE.
  • the first frequency domain resource unit includes an RE or a resource block RB or a resource block group RBG
  • the second The frequency domain resource unit includes a resource particle RE or a resource block RB or a control channel element CCE.
  • the corresponding relationship includes:
  • the method further includes:
  • the base station sends the time-frequency resource detection set to the terminal device, where the time-frequency resource detection set includes at least one time-frequency resource location, where the at least one time-frequency resource location includes the time occupied by the first control information.
  • Frequency resource location
  • the time-frequency resource detection set is preset or configured by a base station.
  • the first frequency domain resource includes a downlink frequency domain resource
  • the downlink frequency domain resource is used by the terminal device to receive data sent by the base station.
  • the first frequency domain resource includes an uplink frequency domain resource
  • the uplink frequency domain resource is used by the terminal device to send data to the base station.
  • the present invention provides a terminal device, including:
  • a detecting module configured to detect second control information, where the second control information includes second frequency domain resource allocation information
  • the detecting module is further configured to detect at least one of the first control information and the third control information, where the first control information includes first frequency domain resource allocation information;
  • a processing module configured to perform data transmission with the base station according to the first frequency domain resource allocation information and/or the second frequency domain resource allocation information.
  • the second control information is corresponding to the at least one TTI
  • the first control information and the third control information are used to indicate that the terminal device is
  • the first TTI performs data transmission with the base station
  • the at least one TTI includes the first TTI
  • the detecting module is specifically configured to:
  • processing module is specifically configured to:
  • the detecting module is further specifically configured to:
  • processing module is specifically configured to:
  • the detecting module is further configured to:
  • processing module is specifically configured to:
  • the processing module is specifically configured to:
  • the frequency domain resource allocation set includes a preset or a base station, the frequency domain resource allocation set includes at least two frequency domain resources, and the first frequency domain resource allocation information includes the first frequency domain resource. a sequence number in the frequency domain resource allocation set;
  • Data transmission is performed with the base station by using the first frequency domain resource.
  • the detecting module is specifically configured to:
  • the time-frequency resource detection set includes at least one time-frequency resource location; and the at least one time-frequency resource location includes the first control information Time-frequency resource location.
  • the time-frequency resource detection set is preset or configured by a base station.
  • the detecting module is specifically configured to:
  • the first control information is detected according to the cell radio network temporary identifier C-RNTI.
  • the first frequency domain resource allocation information includes downlink frequency domain resource allocation information
  • processing module is specifically configured to:
  • the first frequency domain resource allocation information includes uplink frequency domain resource allocation information
  • processing module is specifically configured to:
  • the terminal device performs data transmission with the base station according to the first frequency domain resource allocation information.
  • the modulation and coding policy MCS of the data transmission is a preset or MCS configured by the base station.
  • the first control information further includes indication information, where the indication information is used to indicate the first The first frequency domain resource allocation information is included in a control information.
  • the present invention provides a base station, including:
  • a generating module configured to generate first control information, where the first control information includes first frequency domain resource allocation information, where the first frequency domain resource allocation information is used to indicate that the terminal device performs data transmission with the base station;
  • a sending module configured to send the first control information to the terminal device.
  • the generating module Also used for:
  • the second control information corresponds to at least one TTI;
  • the second control information includes second frequency domain resource allocation information; and the second frequency domain resource allocation information is used to indicate the terminal device and the base station Performing data transmission;
  • the at least one TTI includes a first TTI, and the first TTI includes the TTI corresponding to the first control information indicating that the terminal device performs data transmission with the base station;
  • the sending module is further configured to send the second control information to the terminal device.
  • the first frequency domain resource allocation information includes downlink frequency domain resource allocation information
  • the downlink frequency domain resource allocation information is used to indicate that the terminal device receives the downlink data sent by the base station.
  • the first frequency domain resource allocation information includes uplink frequency domain resource allocation information
  • the uplink frequency domain resource allocation information is used to instruct the terminal device to send uplink data to the base station.
  • the first frequency domain resource allocation information includes: the first frequency domain resource in the frequency domain resource allocation set Serial number in
  • the frequency domain resource allocation set is preset or configured by a base station, and the frequency domain resource allocation set includes at least two sets of frequency domain resources; the first frequency domain resource is data transmission between the terminal device and the base station. resource of.
  • the sending module is further configured to:
  • time-frequency resource detection set includes at least one time-frequency resource location, where the at least one time-frequency resource location includes a time-frequency resource location occupied by the first control information .
  • the first control information further includes indication information, where the indication information is used by The first frequency domain resource allocation information is included in the first control information.
  • the first frequency domain resource allocation information is used to indicate that the terminal device performs data transmission with the base station
  • the modulation and coding policy MCS of the data transmission is a preset or base station configured MCS.
  • a seventh aspect of the present invention provides a terminal device, including:
  • a detecting module configured to detect first control information sent by the base station
  • a processing module configured to determine, according to the second frequency domain resource that is occupied by the first control information, a first frequency domain resource; the second frequency domain resource has a corresponding relationship with the first frequency domain resource;
  • the processing module is further configured to perform data transmission with the base station by using the first frequency domain resource.
  • the corresponding relationship includes:
  • the second frequency domain resource includes the at least one second frequency domain resource unit, the first frequency domain resource includes the frequency domain resource group, and the frequency domain resource group includes at least one first frequency domain resource. unit;
  • the first frequency domain resource unit includes at least one resource particle RE
  • the second frequency domain resource unit includes at least one resource particle RE.
  • the first frequency domain resource unit includes an RE or a resource block RB or a resource block group RBG, where The two-frequency domain resource unit includes a resource particle RE or a resource block RB or a control channel element CCE.
  • the corresponding relationship includes:
  • the detecting module is specifically configured to:
  • the time-frequency resource detection set includes at least one time-frequency resource location; and the at least one time-frequency resource location includes the first control information Time-frequency resource location;
  • the time-frequency resource detection set is preset or configured by a base station.
  • the first frequency domain resource includes a downlink frequency domain resource
  • processing module is specifically configured to:
  • the first frequency domain resource includes an uplink frequency domain resource
  • processing module is specifically configured to:
  • the present invention provides a base station, including:
  • a generating module configured to generate first control information, where the first control information is used to indicate that the terminal device performs data transmission with the base station by using a first frequency domain resource, and the first frequency domain resource is configured by a second frequency
  • the second frequency domain resource has a corresponding relationship with the first frequency domain resource, and the second frequency domain resource includes a frequency domain resource occupied by the first control information
  • a sending module configured to send the first control information to the terminal device.
  • the corresponding relationship includes:
  • the second frequency domain resource includes the at least one second frequency domain resource unit, where the a frequency domain resource includes the frequency domain resource group; the frequency domain resource group includes at least one first frequency domain resource unit;
  • the first frequency domain resource unit includes at least one resource particle RE
  • the second frequency domain resource unit includes at least one resource particle RE.
  • the first frequency domain resource unit includes an RE or a resource block RB or a resource block group RBG, where The two-frequency domain resource unit includes a resource particle RE or a resource block RB or a control channel element CCE.
  • the corresponding relationship includes:
  • the sending module is further configured to:
  • time-frequency resource detection set includes at least one time-frequency resource location, where the at least one time-frequency resource location includes a time-frequency resource location occupied by the first control information ;
  • the time-frequency resource detection set is preset or configured by a base station.
  • the first frequency domain resource includes a downlink frequency domain resource
  • the downlink frequency domain resource is used by the terminal device to receive data sent by the base station.
  • the first frequency domain resource includes an uplink frequency domain resource
  • the uplink frequency domain resource is used by the terminal device to send data to the base station.
  • the present invention provides a terminal device, including:
  • processors and a memory; wherein the memory is configured to store execution instructions, and the processor uses Executing the execution instructions in the memory, performing any of the possible aspects of the first aspect and the first aspect, and the third aspect and any of the possible implementations of the third aspect Methods.
  • the present invention provides a base station, including:
  • processors and memory wherein the memory is for storing execution instructions, the processor is configured to invoke execution instructions in the memory, and perform any of the possible implementations of the second aspect and the second aspect, And the method of any of the possible embodiments of the fourth and fourth aspects.
  • an embodiment of the present invention provides a communication system, where the communication system may include the terminal device according to the fifth aspect and the possible implementation manners of the fifth aspect, or the foregoing seventh and seventh aspects.
  • the terminal device or the station involved in the possible implementation manner or the terminal device according to the ninth aspect may further include the base station or the eighth aspect and the foregoing aspect related to the possible embodiments of the sixth aspect and the sixth aspect.
  • FIG. 1 is a flowchart of Embodiment 1 of a method for receiving control information according to an embodiment of the present invention
  • FIG. 1b is a signaling flowchart of Embodiment 1 of a method for receiving control information according to an embodiment of the present disclosure
  • FIG. 2 is a schematic diagram of control information distribution according to an embodiment of a method for receiving control information according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of distribution of control information according to another embodiment of a method for receiving control information according to an embodiment of the present disclosure
  • Embodiment 4 is a flowchart of Embodiment 1 of a method for transmitting control information according to an embodiment of the present invention
  • FIG. 5 is a flowchart of another embodiment of a method for receiving control information according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of control information mapping according to another embodiment of a method for receiving control information according to an embodiment of the present disclosure
  • FIG. 7 is a schematic diagram of control information mapping according to another embodiment of a method for receiving control information according to an embodiment of the present disclosure
  • FIG. 8 is a schematic diagram of mapping of control information according to another embodiment of a method for receiving control information according to an embodiment of the present disclosure
  • FIG. 9 is a schematic structural diagram of Embodiment 1 of a terminal device according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of Embodiment 1 of a base station according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of Embodiment 2 of a terminal device according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of Embodiment 2 of a base station according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic structural diagram of Embodiment 3 of a terminal device according to an embodiment of the present disclosure.
  • FIG. 14 is a schematic structural diagram of Embodiment 3 of a base station according to an embodiment of the present invention.
  • the method for transmitting and receiving control information according to the embodiment of the present invention may be applied to a wireless communication system supporting short TTI transmission, where the base station device of the wireless communication system may
  • the normal TTI transmission format or the short TTI transmission format transmits downlink information
  • the wireless communication system terminal device can transmit uplink information in a normal TTI transmission format or a short TTI transmission format.
  • the terminal device may include a mobile phone, a notebook computer that can access the LTE system, and a terminal device such as a tablet computer.
  • the base station involved in the embodiments of the present invention may include a macro base station, a micro cell, a pico cell, a home base station, a remote radio head, a relay, and the like.
  • the method for transmitting and receiving control information according to the embodiment of the present invention is to solve the problem that the downlink device does not include the control information of the terminal device, and the terminal device cannot obtain the downlink resource allocation information or the uplink resource scheduling information.
  • FIG. 1 is a flowchart of Embodiment 1 of a method for receiving control information according to an embodiment of the present invention.
  • FIG. 1b is a signaling flowchart of Embodiment 1 of a method for receiving control information according to an embodiment of the present invention.
  • the embodiment relates to a specific process for the terminal device to perform data transmission according to the first frequency domain resource allocation information included in the first control information and/or the second frequency domain resource allocation information included in the second control information. .
  • the method includes the following steps:
  • the terminal device detects second control information, where the second control information includes second frequency domain resource allocation information.
  • the terminal device detects at least one of the first control information and the third control information, where the first control information includes first frequency domain resource allocation information;
  • the terminal device performs data transmission with the base station according to the first frequency domain resource allocation information and/or the second frequency domain resource allocation information.
  • the base station may directly generate the first control information and send the control information to the terminal device, where the first control information includes the terminal device demodulating the data on the sPDSCH. And all control information required for transmitting data through the PUSCH, that is, including frequency domain resource allocation information, transmission indication information, and indication information, including at least a HARQ process number, and further including a redundancy version of HARQ
  • the control information such as the Redundancy Version (RV), the Modulation and Coding Scheme (MCS), and the sTTI length; or the base station may generate the second control information and the third control information by using the existing method.
  • the second control information and the third control information involved in the embodiment of the present invention refer to a slow DCI and an existing fast DCI, respectively.
  • the terminal device detects the second control information, and detects at least one of the first control information and the third control information, according to the first frequency domain resource allocation information included in the first control information, and/or the second control information includes The second frequency domain resource allocation information is transmitted with the base station.
  • the first frequency domain resource allocation information and the second frequency domain resource allocation information may be the same, and may be different. Specifically, the first frequency domain resource allocation information and the second frequency domain resource allocation information may be the same as the frequency domain resources. It can also be different.
  • the first control information is used to indicate that the terminal device performs data transmission with the base station in the corresponding sTTI, and the terminal device determines the first control information by using a monitor, that is, blindly detecting the first control information.
  • the terminal device is time-frequency.
  • the resource is detected, and the first control information is carried on the time-frequency resource by using a Cyclic Redundancy Check (CRC) to determine that the sTTI corresponding to the first control information includes the base station allocated to the terminal device.
  • CRC Cyclic Redundancy Check
  • the Slow DCI includes at least frequency domain resource allocation information.
  • the existing fast DCI includes at least a HARQ process number, and further includes control information such as a Redundancy Version (RV), a Modulation and Coding Scheme (MCS), and an sTTI length of the HARQ. Does not include frequency domain resource allocation information.
  • RV Redundancy Version
  • MCS Modulation and Coding Scheme
  • sTTI length of the HARQ Does not include frequency domain resource allocation information.
  • the first control information has more frequency domain resource allocation information than the existing fast DCI, so that the terminal device can complete data transmission with the base station without acquiring the slow DCI.
  • the base station when the downlink DCI group packet is used, the base station does not determine that there is downlink/uplink traffic for a certain terminal device, and before transmitting the next slow DCI, the downlink/uplink service for the terminal device temporarily appears.
  • the base station may send the first control information to configure control information for the terminal device, where at least the frequency domain resource allocation information of the downlink or uplink transmission is included. If the terminal device does not detect the slow DCI for the terminal device but detects the first control information, the terminal device may perform data transmission with the base station according to the first frequency domain resource allocation information in the first control information.
  • the slow DCI includes indications that UE1, UE2, and UE3 are in 1ms.
  • the resource allocation information (Resource Allocation, RA for short) includes 7 sTTIs, where the base station allocates the first to fourth sTTIs for the current subframe to the UE3 through the four existing fast DCIs; the base station passes the first control.
  • the information is allocated to the UE 4 with resource allocation information for the 5th sTTI of the current subframe.
  • the terminal device detects the second control information, and detects at least one of the first control information and the third control information; the second control information includes the second frequency domain resource allocation information
  • the first control information includes first frequency domain resource allocation information; the terminal device performs data transmission with the base station according to the first frequency domain resource allocation information and/or the second frequency domain resource allocation information, even if the terminal device has In the case of a burst service, the data transmission can be performed with the base station according to the first frequency domain resource allocation information included in the first control information, and the first frequency domain resource allocation information and the first frequency domain can be allocated according to the presence or absence of the burst service.
  • the second frequency domain resource allocation information and the base station perform data transmission, which solves the problem that the delay of the downlink transmission or the uplink transmission is large due to the fact that the slow DCI sent by the base station does not include the control information of the terminal equipment in the prior art.
  • the second control information is corresponding to the at least one TTI, where the first control information and the third control information are used to indicate that the terminal device performs the first TTI with the base station.
  • the first TTI may be a TTI or an sTTI.
  • detecting at least one of the first control information and the third control information may be implemented in the following manner:
  • the terminal device detects the third control information
  • the terminal device performs data transmission with the base station according to the first frequency domain resource allocation information and/or the second frequency domain resource allocation information, including:
  • the terminal device performs data transmission with the base station according to the second frequency domain resource allocation information
  • the terminal device If the terminal device does not detect the second control information, the terminal device detects the first control information
  • the terminal device performs data transmission with the base station according to the first frequency domain resource allocation information and/or the second frequency domain resource allocation information, including:
  • the terminal device performs data transmission with the base station according to the first frequency domain resource allocation information.
  • the terminal device may detect the third control information by using an existing manner, and then the terminal device performs data transmission with the base station according to the second frequency domain resource allocation information. Specifically, the terminal device determines a frequency domain resource according to the second frequency domain resource allocation information, and the terminal device performs data transmission with the base station by using the frequency domain resource.
  • the first control information may be detected, and then the terminal device performs data transmission with the base station according to the first frequency domain resource allocation information. Specifically, the terminal device determines the first frequency domain resource according to the first frequency domain resource allocation information, and the terminal device performs data transmission with the base station by using the first frequency domain resource.
  • the terminal device detects at least one of the first control information and the third control information, including:
  • the terminal device detects the first control information
  • the terminal device performs data transmission with the base station according to the first frequency domain resource allocation information and/or the second frequency domain resource allocation information, including:
  • the terminal device performs data transmission with the base station according to the first frequency domain resource allocation information and the second frequency domain resource allocation information.
  • the base station has determined that there is downlink or uplink service for the terminal device, but before transmitting the next slow DCI, more downlink or uplink services for the terminal device temporarily appear, resulting in slow DCI resources. If the allocation is insufficient and the additional resources need to be allocated, the base station may send the first control information, where at least the frequency domain resource allocation information of the downlink or uplink transmission is included.
  • the first mode if the terminal device detects the second control information and then detects the first control information, the first frequency domain resource allocation information included in the second control information and the first control information may be The second frequency domain resource allocation information and the base station perform data transmission; specifically, the frequency domain resource determined by the first frequency domain resource allocation information and the second frequency domain resource allocation information and the base station perform data transmission, and the frequency domain resource Include the frequency domain resource indicated by the second control information to And the frequency domain resource indicated by the first control information; for example, the slow DCI in FIG. 3 allocates the frequency domain resource to the UE4, but the frequency domain resource is insufficient, so the first control information further allocates the corresponding information in the fifth sTTI in the subframe to the UE4. Frequency domain resources.
  • the terminal device may also be configured according to the second manner, and if the terminal device detects the second control information and then detects the first control information, the terminal device may also include only the first control information.
  • the first frequency domain resource allocation information is transmitted with the base station. Specifically, the frequency domain resource determined by the first frequency domain resource allocation information may be used for data transmission, where the frequency domain resource includes a frequency domain resource indicated by the first control information.
  • the advantage of the first mode compared to the second mode is that a larger range of frequency domain resources can be indicated; the advantage of the second mode compared to the first mode is that if the base station transmits a slow DCI and the terminal device does not detect a slow
  • the DCI is that the frequency domain resource determined by the terminal device is erroneous, so that the data transmission cannot be correctly performed with the base station according to the indication of the first control information.
  • the terminal device performs data transmission with the base station according to the first frequency domain resource allocation information, including:
  • the frequency domain resource allocation set includes a preset or a base station, the frequency domain resource allocation set includes at least two frequency domain resources, and the first frequency domain resource allocation information includes the first frequency domain resource. a sequence number in the frequency domain resource allocation set;
  • the terminal device performs data transmission with the base station by using the first frequency domain resource.
  • the first control information additionally includes frequency domain resource allocation information compared to the existing fast DCI, and may directly instruct the terminal device to determine the frequency domain resource according to the frequency domain resource allocation information, so as to perform data transmission between the first TTI and the base station, but
  • directly putting the resource allocation information on the PDCCH into the sPDCCH greatly increases the control signaling overhead and the blind detection complexity of the terminal device.
  • the number of bits of the first control information is different from the existing fast DCI, and the destruction is performed. Both use the same bitfield size design.
  • the number of indication bits of the resource allocation information may be compressed. At the expense of indication flexibility, the indication signaling overhead remains unchanged.
  • a set of frequency domain resources includes at least one physical resource block (PRB), and the at least one PRB may be continuous in the frequency domain. It can also be discontinuous.
  • PRB physical resource block
  • the frequency domain resource allocation set of the first TTI is configured by using a preset or a base station, and the first frequency domain resource allocation information in the first control information includes only the corresponding sequence number of the first frequency domain resource in the frequency domain resource set, thereby
  • the terminal device determines the domain frequency domain resource for the first TTI by using the sequence number; because the number of elements in the set is limited, the first control information is used to indicate that the number of bits of the first resource allocation information is greatly reduced.
  • the terminal device may be notified by sending a high-level signaling configuration, for example, by using a Radio Resource Control (RRC) layer signaling.
  • RRC Radio Resource Control
  • the frequency domain resource allocation set corresponding to the preset first TTI is ⁇ 0 to 24 PRB, 25 to 49 PRB, 50 to 74 PRB, and 75 to 99 PRB ⁇ , and the first frequency domain resource allocation information indicates four segments in the specific corresponding set. Which segment of the frequency domain resource.
  • frequency domain resources in the preset or base station configured frequency domain resource allocation set may be continuous or discontinuous.
  • the base station sends the frequency domain resource allocation set to the terminal device by using the high layer signaling. And the receiving, by the terminal device, the frequency domain resource allocation set sent by the base station by using the high layer signaling, before determining the first frequency domain resource according to the first frequency domain resource allocation information and the frequency domain resource allocation set.
  • the terminal device detects the first control information, specifically:
  • the terminal device detects the first control information according to the time-frequency resource detection set, where the time-frequency resource detection set includes at least one time-frequency resource location, and the at least one time-frequency resource location includes the first control The location of the time-frequency resource occupied by the information.
  • the time-frequency resource detection set is preset or configured by a base station.
  • the potential time-frequency resource location corresponding to the existing fast DCI may be indicated by a slow DCI, and in the embodiment of the present invention, if the time-frequency resource location is as flexible as the existing fast DCI, the terminal device may be caused.
  • the complexity of blind detection of the first control information is too high, for example blind detection on all PRBs of each symbol to determine if first control information is present.
  • the terminal device detects the first control information in the time-frequency resource detection set, where the time-frequency resource detection set includes the base station transmitting the first control information.
  • Potential time-frequency resource location may be preset.
  • the terminal device blindly detects the first control information only on the preset time-frequency resource of each subframe.
  • the time-frequency resource detection set in which the time-frequency resource location occupied by the first control information is located may also be configured by the base station. If the time-frequency resource detection set is configured by the base station, the high-level signaling configuration may be sent. For example, the terminal device is notified by the RRC layer signaling.
  • the base station semi-statically configures the potential time-frequency resource detection set by the high-layer signaling, and the terminal device blindly detects the first control information only on the time-frequency resource detection set configured by the high-level signaling.
  • the time-frequency resource detection set includes at least one time-frequency resource location; and the at least one time-frequency resource location includes a time-frequency resource location occupied by the first control information.
  • the base station When the time-frequency resource detection set is a time-frequency resource detection set configured by the base station, the base station sends the time-frequency resource detection set to the terminal device.
  • the preset or the base station is configured by the high-level signaling, which reduces the complexity of blind detection of the terminal device. For example, if the terminal device does not detect the slow DCI, the first control information may be detected only on the specific time-frequency resource detection set, for example, Blind detection on certain symbols, or on certain PRBs, without blind detection on all symbols and all PRBs.
  • the time-frequency resource detection set includes at least one time-frequency resource location, including at least one of the following:
  • At least one time domain resource location ie a time domain resource defining blind detection of first control information on at least one particular OFDM symbol.
  • the first control information may only be carried on the 0th, 2nd, ..., and 12th symbols of a subframe, so that the terminal device does not need to be in the first, third, and fifth symbols. ..., the 13th blind test, reducing the complexity of blind detection.
  • the potential frequency domain resource detection set may not be limited, or the potential frequency domain resource detection set may be defined as a preset or the base station is configured by high layer signaling.
  • At least one frequency domain resource location that is, a frequency domain resource detection set that defines blind detection of the first control information is on at least one specific PRB or a control channel element (CCE).
  • the CCE of a control channel has a frequency domain length of 3 PRBs
  • the control channel length of a terminal device may be 1, 2, 4, or 8 CCEs, which may be preset or the base station configures the first control by using high layer signaling.
  • the potential frequency domain resource detection set of the information includes: a first control channel selectable control channel frequency domain length (the number of CCEs included), and/or a start of the control channel for the terminal device to blindly detect the first control information and/or Or knot The location of the bundle's frequency domain resources.
  • the terminal device does not need to blindly detect the first control information in the full frequency domain of a certain symbol, and only blindly detects the frequency domain resource that meets the qualified condition.
  • the preset frequency domain resource detection set configured by the base station or the base station may include a continuous PRB, or may include a discrete PRB, or may include a discrete RE, or at least two types of patterns. Combination is not limited.
  • the potential time domain resource detection set may not be limited, and the potential time domain resource detection set may be defined as a preset or the base station is configured by high layer signaling.
  • the time-frequency resource detection set includes at least one time-frequency resource location, and may also include a combination of at least one time-domain resource location and at least one frequency-domain resource location, that is, a time domain resource that defines blind detection of the first control information is At least one specific PRB or CCE of at least one particular OFDM symbol.
  • the terminal device detects the first control information, and specifically includes:
  • the terminal device detects the first control information according to a Cell Radio Network Temporary Identifier (C-RNTI).
  • C-RNTI Cell Radio Network Temporary Identifier
  • the terminal device detects the first control information according to the C-RNTI, and does not detect the first control information according to the Semi-Persistent Scheduling Radio Network Temporary Identifier (SPS-RNTI).
  • SPS-RNTI Semi-Persistent Scheduling Radio Network Temporary Identifier
  • the terminal device extracts the C-RNTI according to the received information to perform a CRC check to detect whether it is the first control information for itself.
  • the first control information further includes hybrid automatic repeat request (HARQ information), including a HARQ process ID, a redundancy version, and a new data indicator. , referred to as NDI).
  • HARQ information including a HARQ process ID, a redundancy version, and a new data indicator. , referred to as NDI).
  • the first control information may further include a time domain resource, a Pre-coding Matrix Indication (PMI), a Modulation and Coding Scheme (MCS), and a Sounding Reference (Sounding Reference).
  • PMI Pre-coding Matrix Indication
  • MCS Modulation and Coding Scheme
  • Sounding Reference Sounding Reference
  • SRS Sounding Reference
  • the second frequency domain resource allocation information includes downlink frequency domain resource allocation information, or the second frequency domain resource information includes uplink frequency domain resource allocation information.
  • the first frequency domain resource allocation information includes downlink frequency domain resource allocation information, or the first frequency domain resource allocation information includes uplink frequency domain resource allocation information, or the first frequency domain resource.
  • the allocation information includes downlink frequency domain resource allocation information and uplink frequency domain resource allocation information.
  • the first frequency domain resource allocation information includes downlink frequency domain resource allocation information
  • the terminal device performs data transmission with the base station according to the first frequency domain resource allocation information, and specifically includes:
  • the terminal device receives downlink data sent by the base station according to the downlink frequency domain resource allocation information.
  • the first frequency domain resource allocation information in the first control information includes downlink frequency domain resource allocation information, which is used to instruct the terminal device to demodulate data on the sPDSCH of the downlink sTTI, and the terminal device receives the base station according to the downlink frequency domain resource allocation information.
  • the downlink data to be sent may be determined by using the downlink frequency domain resource allocation information to determine the downlink frequency domain resource allocated to the terminal device, and receiving the downlink data sent by the base station in the first TTI by using the downlink frequency domain resource.
  • the first control information additionally adds downlink frequency domain resource allocation information compared to the existing fast DCI; after acquiring the downlink frequency domain resource allocation information in the first control information, the terminal device receives the demodulated sPDSCH on the corresponding downlink frequency domain resource.
  • the data is not limited to the existing fast DCI.
  • the second frequency domain resource allocation information in the second control information includes downlink frequency domain resource allocation information
  • the detecting, by the terminal device, at least one of the first control information and the third control information includes:
  • the terminal device detects that the second frequency domain resource allocation information in the second control information includes downlink frequency domain resource allocation information, the terminal device detects the third control information;
  • the terminal device performs data transmission with the base station according to the first frequency domain resource allocation information and/or the second frequency domain resource allocation information, including:
  • the terminal device If the terminal device does not detect that the second frequency domain resource allocation information in the second control information includes downlink frequency domain resource allocation information, the terminal device detects the first control information;
  • the terminal device is configured according to the first frequency domain resource allocation information and/or the second frequency
  • the domain resource allocation information and the base station perform data transmission, including:
  • the terminal device receives the downlink data sent by the base station according to the downlink frequency domain resource allocation information included in the first frequency domain resource allocation information.
  • the terminal device detects that the second frequency domain resource allocation information in the second control information includes downlink frequency domain resource allocation information, and the terminal device detects the first control information;
  • the terminal device performs data transmission with the base station according to the first frequency domain resource allocation information and/or the second frequency domain resource allocation information, including:
  • the terminal device receives the downlink data sent by the base station according to the downlink frequency domain resource allocation information included in the first frequency domain resource allocation information and the downlink frequency domain resource allocation information included in the second frequency domain resource allocation information.
  • the first frequency domain resource allocation information includes uplink frequency domain resource allocation information
  • the terminal device performs data transmission with the base station according to the first frequency domain resource allocation information, and specifically includes:
  • the terminal device sends uplink data to the base station according to the uplink frequency domain resource allocation information.
  • the first frequency domain resource allocation information in the first control information includes the uplink frequency domain allocation information, and the terminal device sends the uplink data to the base station according to the uplink frequency domain resource allocation information, which may be, according to the uplink frequency domain resource allocation information.
  • the uplink frequency domain resource allocated to the terminal device is determined, and the uplink data is sent to the base station by using the uplink frequency domain resource in the first TTI.
  • the first control information additionally adds uplink frequency domain resource allocation information to the existing fast DCI. After acquiring the uplink frequency domain resource allocation information in the first control information, the terminal device sends data through the sPUSCH on the corresponding uplink frequency domain resource. .
  • the second frequency domain resource allocation information in the second control information includes an uplink frequency domain. Resource allocation information
  • the detecting, by the terminal device, at least one of the first control information and the third control information includes:
  • the terminal device detects that the second frequency domain resource allocation information in the second control information includes uplink frequency domain resource allocation information, the terminal device detects the third control information;
  • the terminal device performs data transmission with the base station according to the first frequency domain resource allocation information and/or the second frequency domain resource allocation information, including:
  • the terminal device sends uplink data to the base station according to the uplink frequency domain resource allocation information included in the second frequency domain resource allocation information;
  • the terminal device If the terminal device does not detect that the second frequency domain resource allocation information in the second control information includes uplink frequency domain resource allocation information, the terminal device detects the first control information;
  • the terminal device performs data transmission with the base station according to the first frequency domain resource allocation information and/or the second frequency domain resource allocation information, including:
  • the terminal device sends uplink data to the base station according to the uplink frequency domain resource allocation information included in the first frequency domain resource allocation information.
  • the terminal device detects that the second frequency domain resource allocation information in the second control information includes uplink frequency domain resource allocation information, and the terminal device detects the first control information;
  • the terminal device performs data transmission with the base station according to the first frequency domain resource allocation information and/or the second frequency domain resource allocation information, including:
  • the terminal device sends uplink data to the base station according to the uplink frequency domain resource allocation information included in the first frequency domain resource allocation information and the uplink frequency domain resource allocation information included in the second frequency domain resource allocation information.
  • the first control information further includes indication information, where the indication information is used to indicate that the first control information includes the first frequency domain resource allocation information.
  • the indication information is used to indicate that the control information is the first control information or the third control information
  • the terminal device determines, according to the indication information, that the detected control information is the first
  • the control information is also the third control information.
  • the first control information is different from the third control information in that the first control information includes the first frequency domain resource allocation information, so indicating whether the control information is the first control information or the third control information is equivalent to indicating whether the control information includes the first A frequency domain resource allocation information.
  • the first control information may adopt a new DCI format, or may reuse an existing DCI format, and the DCI format of the first control information may be the same as or different from the existing fast DCI format, and the different advantages are: the first control There is no additional restriction on the bit field size of the information; since the first control information additionally contains frequency domain resource information compared to the existing fast DCI, the new format does not require additional adjustment of the bits in the DCI format.
  • the terminal device blindly detects (s) the PDCCH, it uses two DCI formats (corresponding to different antenna modes, that is, one antenna mode only corresponds to one DCI format) to perform blind detection, and determines the DCI format actually used by the base station. If a new DCI format is introduced, the terminal device may use both the DCI format corresponding to the existing fast DCI and the DCI format corresponding to the new fast DCI, and the base station additionally notifies the terminal device of the new DCI format. .
  • the DCI format adopted by the first control information may be multiplexed with the DCI format of the existing fast DCI, and thus the bit field sizes of the two are required to be the same. It should be noted that the bit field includes all or part of the first control information, and at least one of the bits carries one of the first control information.
  • an indication information may be added to the DCI format shared by the two, for example, 1 bit is used to distinguish whether the DCI format corresponds to the existing fast DCI or the new fast DCI.
  • both the existing fast DCI and the first control information include the indication information, but the indication information values are different to distinguish the two types of control information.
  • the terminal device does not need to simultaneously blindly detect the potential time-frequency resources of the first control information by using two DCI formats, and can detect by using the same DCI format, if the control information is detected (the control information may be an existing fast DCI or The first control information is obtained by extracting the indication information in the corresponding bit region to determine whether the current control information is the existing fast DCI or the first control information, thereby achieving the purpose of reducing the blind detection complexity.
  • the first control information is the same as the DCI bit field of the existing fast DCI, but the content indicated by each bit in some or all of the bits is different, for example, some bits, and the first control information is used. Indicates frequency domain resource allocation information, while existing fast DCI is used to indicate MCS information.
  • the modulation and coding policy MCS of the data transmission is preset or configured by the base station. MCS.
  • the terminal device may directly instruct the terminal device to determine the frequency domain resource according to the frequency domain resource allocation information, so as to perform data transmission with the base station in the first TTI, but
  • directly putting the resource allocation information on the PDCCH into the sPDCCH greatly increases the control signaling overhead and the blind detection complexity of the terminal device.
  • the number of bits of the first control information is different from the existing fast DCI, and the destruction is performed. Both use the same bitfield size design.
  • the indication of the resource allocation information may be compressed. The number of bits. At the expense of indication flexibility, the indication signaling overhead remains unchanged.
  • the MCS used by the terminal device in the first TTI may be preset or the MCS configured by the base station by using the high layer signaling, and the MCS indication is removed. Bits; or reduce the number of bits occupied by the MCS, use a coarser-grained MCS indication in the first control information; or make the first TTI only used for the initial data, and remove the bits corresponding to the NDI.
  • the existing fast DCI includes 5 bits of information for indicating the predefined 32 types of MCS, and the first control information may indicate only 4 types of predefined MCS by using 2 bits, which saves 3-bit DCI control signaling overhead;
  • the subset is selected semi-statically from the first MCS set (eg, 32 MCSs) as a second MCS set (eg, 4 MCSs).
  • the terminal device then notifies the MCS of the specific MCS in the second MCS set by using the first control information, thereby saving the 3-bit DCI control signaling overhead; thus configuring the high-level signaling through the predefined or the base station. And the manner of the first control information notification, which realizes the saving of the MCS indication signaling overhead.
  • the existing fast DCI includes a 1-2 bit new data indication (NDI) for indicating whether the data is a retransmission or a new transmission.
  • NDI 1-2 bit new data indication
  • the application scenario is considered for the burst service.
  • the NDI information can be removed and used only to indicate the newly transmitted data, thus saving 1 to 2 bits of control signaling.
  • the following table 1 shows the partial control signaling included in the existing fast DCI.
  • the redundancy version (RV) occupies 4 bits
  • the MCS occupies 10 bits
  • the HARQ process number occupies 3 bits
  • the PMI occupies 3 bits.
  • the length is 2 bits.
  • FIG. 4 is a flowchart of Embodiment 1 of a method for transmitting control information according to an embodiment of the present invention.
  • the embodiment relates to a specific process in which a base station generates first control information and sends the first control information to a terminal device. As shown in FIG. 4, the method includes the following steps:
  • the base station generates first control information, where the first control information includes first frequency domain resource allocation information, where the first frequency domain resource allocation information is used to indicate that the terminal device performs data transmission with the base station.
  • the base station sends the first control information to the terminal device.
  • the base station may directly generate the first control information to send control information to the terminal device, where the first control information includes the terminal device demodulating data on the sPDSCH and All control information required to transmit data through the PUSCH, that is, includes both frequency domain resource allocation information and transmission indication information, and transmission indication information, including at least a HARQ process number, and further, a redundancy version of HARQ (Redundancy Version, RV), Modulation and Coding Scheme (MCS), sTTI length and other control information.
  • the first control information includes the terminal device demodulating data on the sPDSCH and All control information required to transmit data through the PUSCH, that is, includes both frequency domain resource allocation information and transmission indication information, and transmission indication information, including at least a HARQ process number, and further, a redundancy version of HARQ (Redundancy Version, RV), Modulation and Coding Scheme (MCS), sTTI length and other control information.
  • RV Redundancy Version
  • MCS Modulation and Coding Scheme
  • the first control information is used to indicate that the terminal device performs data transmission with the base station in the corresponding sTTI, and the terminal device determines the first control information by using a monitor, that is, blindly detecting the first control information.
  • the terminal device is time-frequency.
  • the resource is detected, and the first control information is carried on the time-frequency resource by using a Cyclic Redundancy Check (CRC) to determine that the sTTI corresponding to the first control information includes the base station allocated to the terminal device.
  • CRC Cyclic Redundancy Check
  • the Slow DCI includes at least frequency domain resource allocation information.
  • the existing fast DCI includes at least a HARQ process number, and further includes control information such as a Redundancy Version (RV), a Modulation and Coding Scheme (MCS), and an sTTI length of the HARQ. Does not include frequency domain resource allocation information.
  • RV Redundancy Version
  • MCS Modulation and Coding Scheme
  • sTTI length of the HARQ Does not include frequency domain resource allocation information.
  • the first control information has more frequency domain resource allocation information than the existing fast DCI, so that the terminal device can complete data transmission with the base station without acquiring the slow DCI.
  • the base station when the downlink DCI group packet is used, the base station does not determine that there is downlink/uplink traffic for a certain terminal device, and before transmitting the next slow DCI, the downlink/uplink service for the terminal device temporarily appears.
  • the base station may send the first control information to configure control information for the terminal device, where at least the frequency domain resource allocation information of the downlink or uplink transmission is included. If the terminal device does not detect the slow DCI for the terminal device but detects the first control information, the terminal device may perform data transmission with the base station according to the first frequency domain resource allocation information in the first control information.
  • the downlink DCI includes resource allocation information (Resource Allocation, RA for short) indicating UE1, UE2, and UE3 in a 1ms subframe, including 7 sTTIs, where the base station sends UE3 through 4 existing fast DCIs.
  • the first to fourth sTTIs for the current subframe are respectively allocated; the base station allocates, by the first control information, the resource allocation information for the fifth sTTI of the current subframe to the UE4.
  • the base station generates first control information; the first control information includes first frequency domain resource allocation information; and the first frequency domain resource allocation information is used to indicate the terminal device and the The base station performs data transmission, and sends the first control information to the terminal device, and the terminal device can perform the first frequency domain resource allocation information included in the first control information, and the base station, even if the first TTI has the burst service.
  • Performing data transmission which solves the problem that the downlink DCI sent by the base station does not include the control information of the terminal device in the prior art, and the downlink transmission or the uplink transmission The delay of the loss is small.
  • the base station generates second control information, where the second control information corresponds to at least one TTI; the second control information includes second frequency domain resource allocation information; and the second frequency domain resource allocation information And indicating that the terminal device performs data transmission with the base station; the at least one TTI includes a first TTI, where the first TTI includes the first control information, where the terminal device indicates that the terminal device performs data transmission with the base station. TTI;
  • the base station sends the second control information to the terminal device.
  • the first frequency domain resource allocation information includes downlink frequency domain resource allocation information
  • the downlink frequency domain resource allocation information is used to indicate that the terminal device receives the downlink data sent by the base station.
  • the first frequency domain resource allocation information includes uplink frequency domain resource allocation information
  • the uplink frequency domain resource allocation information is used to instruct the terminal device to send uplink data to the base station.
  • the first frequency domain resource allocation information includes a sequence number of the first frequency domain resource in the frequency domain resource allocation set
  • the frequency domain resource allocation set is preset or configured by a base station, and the frequency domain resource allocation set includes at least two sets of frequency domain resources; the first frequency domain resource is data transmission between the terminal device and the base station. resource of.
  • it also includes:
  • the base station sends the time-frequency resource detection set to the terminal device, where the time-frequency resource detection set includes at least one time-frequency resource location, where the at least one time-frequency resource location includes the time occupied by the first control information. Frequency resource location.
  • the first control information further includes indication information, where the indication information is used to indicate that the first frequency domain resource allocation information is included in the first control information.
  • the first frequency domain resource allocation information is used to indicate that the modulation and coding policy MCS of the data transmission is a preset or MCS configured by the base station when the terminal device performs data transmission with the base station.
  • FIG. 5 is a flowchart of another embodiment of a method for receiving control information according to an embodiment of the present invention.
  • the embodiment relates to a specific process of determining, by the terminal device, the first frequency domain resource according to the second frequency domain resource occupied by the first control information, and performing data transmission by using the first frequency domain resource and the base station.
  • the method includes the following steps:
  • the base station generates first control information.
  • the first control information is used to indicate that the terminal device performs data transmission with the base station by using a first frequency domain resource; the first frequency domain resource is determined by a second frequency domain resource, and the second The frequency domain resource includes a time-frequency resource occupied by the first control information, the second frequency domain resource has a corresponding relationship with the first frequency domain resource, and the second frequency domain resource includes the first control information.
  • the frequency domain resource S502 the base station sends the first control information to the terminal device;
  • the terminal device detects first control information sent by the base station.
  • the terminal device determines, according to the second frequency domain resource that is occupied by the first control information, a first frequency domain resource, where the second frequency domain resource has a corresponding relationship with the first frequency domain resource;
  • the terminal device performs data transmission with the base station by using the first frequency domain resource.
  • the first control information in the embodiment is sent to the terminal device, and the first control information in the embodiment is compared with the first control information in the foregoing embodiment.
  • the control information format of the first control information and the included information may be the same as the existing fast DCI, such as sTTI specific information such as MCS, HARQ, sTTI length, and the like.
  • the first control information involved in the embodiment of the present invention refers to a new fast DCI
  • the second control information refers to a slow DCI.
  • the location of the second frequency domain resource occupied by the first control information is designed to have a corresponding relationship with the location of the first frequency domain resource allocated to the terminal device, and the corresponding first frequency is implicitly The location of the domain resource is indicated to the terminal device. If the terminal device does not detect the slow DCI, the first control information may be blindly detected on the potential new fast DCI time-frequency resource location, and the second frequency domain resource occupied by the detected first control information is mapped to the base station.
  • the first frequency domain resource of the terminal device includes: 1. a frequency domain resource corresponding to the sPDSCH, thereby implementing data reception, or 2, (s) a frequency domain resource corresponding to the PUSCH, thereby implementing data transmission.
  • the advantage of this embodiment is that the resource allocation information for the terminal device does not need to be displayed in the first control information, but the resource allocation information corresponding to the terminal device is implicitly notified by the frequency domain resource occupied by the first control information. , thereby saving the overhead of notifying the resource allocation information, so that It is not necessary to compress other control information in the first control information to carry additional resource allocation information as in the foregoing embodiment, and improve the notification accuracy of control signaling such as MCS.
  • the terminal device detects the first control information sent by the base station; the terminal device determines the first frequency domain resource according to the second frequency domain resource occupied by the first control information; The second frequency domain resource has a corresponding relationship with the first frequency domain resource; the terminal device performs data transmission with the base station by using the first frequency domain resource, even if the terminal device has a burst service in the first TTI
  • the data transmission is performed with the base station according to the first frequency domain resource allocation information included in the first control information, which solves the problem that the downlink DCI sent by the base station does not include the control information of the terminal device in the prior art, resulting in downlink transmission or uplink.
  • the problem of large transmission delay is performed with the base station according to the first frequency domain resource allocation information included in the first control information, which solves the problem that the downlink DCI sent by the base station does not include the control information of the terminal device in the prior art, resulting in downlink transmission or uplink.
  • the terminal device determines the first frequency domain resource according to the second frequency domain resource occupied by the first control information, including:
  • the terminal device detects second control information, where the second control information includes third frequency domain resource allocation information
  • the terminal device determines the first frequency domain resource according to the second frequency domain resource
  • the terminal device determines the first frequency domain resource according to the second frequency domain resource, or The terminal device determines the first frequency domain resource according to the third frequency domain resource determined by the second frequency domain resource and the third frequency domain resource allocation.
  • the second control information is corresponding to the at least one TTI
  • the first control information is used to indicate that the terminal device performs data transmission with the base station in a first TTI
  • the at least one TTI includes the first TTI .
  • the corresponding relationship includes:
  • the second frequency domain resource includes the at least one second frequency domain resource unit, where the a frequency domain resource includes the frequency domain resource group; the frequency domain resource group includes at least one first frequency domain resource unit;
  • the first frequency domain resource unit includes at least one resource particle RE
  • the second frequency domain resource unit includes at least one resource particle RE.
  • the at least one second frequency domain resource unit of the time-frequency resources occupied by the first control information may correspond to one of the first frequency domain resources.
  • the frequency domain resource group includes at least one first frequency domain resource unit.
  • a first frequency domain resource unit includes at least one RE.
  • a second frequency domain resource unit includes at least one RE.
  • the size of the second frequency domain resource unit may be the same as or different from the size of the first frequency domain resource unit.
  • the second frequency domain resource unit is an RE
  • the corresponding first frequency domain resource unit is a resource block (Resource Block, RB for short, or a resource block group (RBG); or, the second frequency domain resource unit It is an RB or a CCE, and the corresponding first frequency domain resource unit is an RBG.
  • one RBG includes multiple consecutive RBs, for example, six; one CCE includes three RBs, and each RB includes 12 REs, that is, one CCE includes 36 REs.
  • At least one second frequency domain resource unit occupied by the first control information corresponds to one frequency domain resource group of the first frequency domain resource, and includes the following situations: 1.
  • the second frequency domain Each of the second frequency domain resource units in the resource corresponds to one frequency domain resource group, and the first frequency domain resource allocated by the base station to the terminal device includes all frequency domain resource groups, for example, the second frequency domain resource unit is an RB, and the first frequency The domain resource unit is an RB, the frequency domain resource group is an RBG composed of a plurality of consecutive RBs, and the RBs occupied by the second frequency domain resource unit correspond to the RBG of one frequency domain resource group, and if the second frequency domain resource includes two CCE, that is, 6 RBs, and therefore corresponds to 6 frequency domain resource groups; 2.
  • Each of the second frequency domain resource elements in the second frequency domain resource corresponds to one frequency domain resource group, for example, the second frequency.
  • the domain resource unit is a CCE
  • the second frequency domain resource includes two frequency domain resource units ⁇ CCE#1, CCE#2 ⁇ , wherein the frequency domain resource group corresponding to the CCE#1 is the first frequency allocated by the base station to the terminal device.
  • Domain resource, CCE#2 does not correspond to the frequency domain resource group; 3.
  • At least two The second frequency domain resource unit corresponds to one frequency domain resource group, for example, the frequency domain resource unit of the second frequency domain resource is RE, and the RE#0 to RE#35 (1 CCE includes 36 REs) corresponds to one frequency domain resource group. If the second frequency domain resource is RE#0-RE#35, the frequency domain resource group is the first frequency domain resource allocated by the base station to the terminal device.
  • the at least one first frequency domain resource unit included in the frequency domain resource group may be continuous in the frequency domain or may be discontinuous in the frequency domain.
  • the first frequency domain resource unit is an RB
  • the frequency domain resource group corresponding to the second frequency domain resource unit CCE#1 includes 10 RBs, and the 10 RBs may be consecutive PRB#0 to PRB#9, or may be Discontinuous PRB#0, PRB#10, PRB#20,..., PRB#90.
  • the first frequency domain resource unit includes an RE or a resource block RB or a resource block group RBG
  • the second frequency domain resource unit includes a resource particle RE or a resource block RB or a control channel unit CCE.
  • the frequency domain location of a frequency domain resource group included in the first frequency domain resource corresponding to the frequency domain location of the second frequency domain resource unit may be different; for example, the second frequency domain resource includes three second frequency domain resources.
  • the frequency domain locations of the frequency domain resource groups included in the first frequency domain resource corresponding to the frequency domain locations of the second frequency domain resource units do not overlap; the two frequency domain resource groups corresponding to the two frequency domain resource groups do not overlap.
  • the frequency domain resources do not overlap, or two different frequency domain resource groups do not simultaneously contain the same first frequency domain resource unit.
  • the second frequency domain resource includes four second frequency domain resource units ⁇ CCE#1, CCE#2, CCE#3, CCE#4 ⁇ , wherein the sTTI frequency domain resource group corresponding to CCE#1 is the RB set RB#.
  • the sTTI frequency domain resource group corresponding to CCE#2 is RB#25 to RB#49
  • the sTTI frequency domain resource group corresponding to CCE#3 is RB#50 to RB#74
  • the sTTI corresponding to CCE#4 The frequency domain resource group is RB#75 ⁇ RB#99.
  • At least one second frequency domain resource unit of the time-frequency resource occupied by the first control information corresponds to one frequency domain resource group of the first frequency domain resource, and there may be two mapping modes: the first frequency domain resource includes the first control information.
  • the second frequency domain resource that is occupied, the first frequency domain resource does not include the second frequency domain resource occupied by the first control information.
  • the first frequency domain resource includes the second frequency domain resource occupied by the first control information.
  • the frequency domain resources occupied by each first control information are included in the frequency domain range of the first frequency domain resource indicated by the first frequency information.
  • the first control information cannot reuse the area of the existing fast DCI, but needs to redesign its time-frequency resource location so as to be within the frequency domain corresponding to the first frequency domain resource.
  • the mapping of the second frequency domain resource to the first frequency domain resource may be embodied as a mapping formula.
  • a first control information is occupied by RB#n may be mapped to the frequency domain resource group RB#n to RB#n+4, or the RB#n occupied by the first control information may be mapped to the frequency domain resource group RB#n-4 to RB#n, or The RB#n occupied by the first control information may be mapped to the frequency domain resource group RB#n-2 to RB#n+2; where n is an integer.
  • the second frequency domain resource occupied by the first control information of the UE2 and the UE4 is included in the mapped first frequency domain resource range.
  • the first control information of the mapping mode has a wide distribution area, for example, can be distributed to the full frequency band.
  • the advantage is that the resource indication flexibility is higher, and the first frequency domain resource that is not continuous is more convenient to be indicated.
  • the disadvantage is that the potential second frequency is There are many domain resources, so UEs have more blind detections.
  • the first frequency domain resource does not include the second frequency domain resource occupied by the first control information.
  • the first control information multiplexes the distribution area of the existing fast DCI, in a specific (for example, base station indication or preset) time-frequency resource area occupied by the first control information, for example, RB#0-RB#29.
  • a cross-frequency domain indication is required.
  • RB#0-RB#2 of the second frequency domain resource indicates that the RB#0-RB#9 of the first frequency domain resource is an intra-frequency indication, that is, the first frequency domain resource includes the frequency occupied by the first control information.
  • the RB#3 to RB#5 of the second frequency domain resource indicates the RB#10 to RB#19 of the first frequency domain resource
  • the RB#27 to RB#29 of the second frequency domain resource indicate the first RB#90-RB#99 of a frequency domain resource are cross-frequency domain indications, that is, the frequency domain of the first frequency domain resource does not include the frequency domain resource occupied by the first control information.
  • the second frequency domain resource occupied by the first control information of the UE2 and the UE4 is not included in the mapped first frequency domain resource range.
  • the terminal device may determine the corresponding first frequency domain resource according to the absolute frequency domain location of the second frequency domain resource occupied by the first control information, for example, the sequence number of the occupied RB or the CCE, for example,
  • the second frequency domain resource unit included in the second frequency domain resource is RB#0-RB#2, corresponding to the frequency domain resource group of the three groups of the first frequency domain resources, and the frequency domain resource group includes 10 RBs, that is, RB#0.
  • the base station may determine, according to the frequency domain resource occupied by the first control information, the corresponding first frequency domain resource in the time-frequency resource detection set, for example, the time-frequency resource detection set includes 20 RB, RB#0 ⁇ RB#19, corresponding to 10 groups of frequency domain resource groups of the first frequency domain resource, and the frequency domain resource group includes 10 RBs, and RB#0 corresponds to RB#0 ⁇ RB#9, RB#2 Corresponding to RB#10 to RB#19, RB#4 corresponds to RB#20 to RB#29, and so on.
  • mapping mode 2 The advantage of the mapping mode 2 is that the time-frequency region of the existing fast DCI is reused, and the time-frequency region occupied by the first control information is not required to be designed, and the optional time-frequency location of the first control information is small, and the terminal device blindly detects the complexity. Lower.
  • a disadvantage of the mapping mode 2 is that the frequency domain resources occupied by the first control information are in a specific area and cannot be distributed over the full bandwidth, so the indicated resource indication is less flexible.
  • the corresponding relationship includes:
  • the lowest frequency domain boundary includes a minimum frequency point of the frequency domain bandwidth occupied by the second frequency domain resource, and the highest frequency domain boundary includes a maximum frequency point of the frequency domain bandwidth occupied by the second frequency domain resource;
  • the lowest frequency domain boundary includes the RE or RB corresponding to the minimum frequency point in the frequency domain bandwidth of the second frequency domain resource, and the highest frequency domain boundary includes the corresponding maximum frequency point in the frequency domain bandwidth occupied by the second frequency domain resource.
  • RE or RB corresponding to the minimum frequency point in the frequency domain bandwidth of the second frequency domain resource
  • the highest frequency domain boundary includes the corresponding maximum frequency point in the frequency domain bandwidth occupied by the second frequency domain resource.
  • the corresponding relationship between the second frequency domain resource and the first frequency domain resource may include: a lowest frequency domain boundary corresponding to the second frequency domain resource (ie, a minimum frequency point) and a lowest frequency domain corresponding to the first frequency domain resource Corresponding relationship between the boundary (ie, the minimum frequency point) and the highest frequency domain boundary corresponding to the second frequency domain resource (ie, the maximum frequency point) and the highest frequency domain boundary corresponding to the first frequency domain resource (ie, the maximum Corresponding relationship of frequency points; the first frequency domain resource is a continuous resource in the frequency domain.
  • the minimum frequency point corresponding to the second frequency domain resource is the same as the minimum frequency point corresponding to the first frequency domain resource
  • the maximum frequency point corresponding to the second frequency domain resource is corresponding to the first frequency domain resource.
  • the maximum frequency point is the same, so that the first frequency domain resource can be directly determined according to the second frequency domain resource.
  • the lowest frequency domain boundary of the second frequency domain resource occupied by the first control information of UE2 and UE4 is The highest frequency domain boundary is the same as the lowest frequency domain boundary and the highest frequency domain boundary of the first frequency domain resource mapped thereto.
  • the minimum frequency point corresponding to the second frequency domain resource has a predefined mapping relationship with the minimum frequency point corresponding to the first frequency domain resource, and the maximum frequency point corresponding to the second frequency domain resource is the first frequency point.
  • the maximum frequency corresponding to the frequency domain resource has a predefined mapping relationship; the predefined mapping relationship includes the pre-defined mapping relationship Defined frequency domain offset;
  • a second frequency domain resource is #RB0 to #RB49, and the corresponding first frequency domain resource is 2600 MHz to 2610 MHz, and the minimum frequency point is 2600 MHz (the lowest frequency domain boundary of #RB0), and the maximum frequency point is 2610 MHz (# The highest frequency domain boundary of RB49); if a discontinuous second frequency domain resource is ⁇ #RB0 ⁇ #RB19, #RB30 ⁇ #RB49 ⁇ corresponds to the first frequency domain resource 2600MHz ⁇ 2610MHz, then the lowest frequency domain boundary is still At 2600 MHz (the lowest frequency domain boundary of #RB0), the highest frequency domain boundary is 2610 MHz (the highest frequency domain boundary of #RB49).
  • the frequency domain resources occupied by the first control information may be continuous or discontinuous; for the first frequency domain resources, the frequency domain resources are continuous.
  • the frequency domain resource occupied by the first control information may be scattered into 3 RBs and placed on the first frequency domain resource by assuming that one CCE is occupied, wherein one of the two ends of the second frequency domain resource The RB is placed at one end of the frequency domain range of the corresponding first frequency domain resource, and one RB is placed at the other end of the frequency domain range of the corresponding first frequency domain resource.
  • the terminal device detects the first control information sent by the base station, and specifically includes:
  • the terminal device detects the first control information according to the time-frequency resource detection set, where the time-frequency resource detection set includes at least one time-frequency resource location, and the at least one time-frequency resource location includes the first control The location of the time-frequency resource occupied by the information;
  • the time-frequency resource detection set is preset or configured by a base station.
  • the potential time-frequency resource location corresponding to the existing fast DCI may be indicated by a slow DCI, and in the embodiment of the present invention, if the time-frequency resource location is as flexible as the existing fast DCI, the terminal device may be caused.
  • the complexity of blind detection of the first control information is too high, for example blind detection on all PRBs of each symbol to determine if first control information is present.
  • the terminal device detects the first control information in the time-frequency resource detection set, where the time-frequency resource detection set includes the potential time-frequency resource location at which the base station sends the first control information.
  • the time-frequency resource detection set in which the time-frequency resource location occupied by the first control information is located may be preset.
  • the terminal device blindly detects the first control information only on the preset time-frequency resource of each subframe.
  • the time-frequency resource detection set in which the time-frequency resource location occupied by the first control information is located may also be configured by the base station, if the time-frequency resource detection set is configured.
  • the configuration of the base station can be configured by sending a high-level signaling, for example, to the terminal device through RRC layer signaling.
  • the base station semi-statically configures the potential time-frequency resource detection set by the high-layer signaling, and the terminal device blindly detects the first control information only on the time-frequency resource detection set configured by the high-level signaling.
  • the time-frequency resource detection set includes at least one time-frequency resource location; and the at least one time-frequency resource location includes a time-frequency resource location occupied by the first control information.
  • the base station When the time-frequency resource detection set is a time-frequency resource detection set configured by the base station, the base station sends the time-frequency resource detection set to the terminal device.
  • the preset or the base station is configured by the high-level signaling, which reduces the complexity of blind detection of the terminal device. For example, if the terminal device does not detect the slow DCI, the first control information may be detected only on the specific time-frequency resource detection set, for example, Blind detection on certain symbols, or on certain PRBs, without blind detection on all symbols and all PRBs.
  • the time-frequency resource detection set includes at least one time-frequency resource location, including at least one of the following:
  • At least one time domain resource location ie a time domain resource defining blind detection of first control information on at least one particular OFDM symbol.
  • the first control information may only be carried on the 0th, 2nd, ..., and 12th symbols of a subframe, so that the terminal device does not need to be in the first, third, and fifth symbols. ..., the 13th blind test, reducing the complexity of blind detection.
  • the potential frequency domain resource detection set may not be limited, or the potential frequency domain resource detection set may be defined as a preset or the base station is configured by high layer signaling.
  • At least one frequency domain resource location that is, a frequency domain resource detection set that defines blind detection of the first control information is on at least one specific PRB or a control channel element (CCE).
  • a CCE has a frequency domain length of 3 PRBs
  • a control channel length of a terminal device may be 1, 2, 4, or 8 CCEs, which may be preset or the base station configures the first control information through high layer signaling.
  • the frequency domain resource detection set includes: a control channel frequency domain length (the number of CCEs included) of the first control information, and/or a start and/or an end of the control channel of the terminal device blindly detecting the first control information Frequency domain resource location.
  • the terminal device does not need to blindly detect the first control information in the full frequency domain of a certain symbol, and only blindly detects the frequency domain resource that meets the qualified condition.
  • the preset frequency domain resource detection set configured by the base station or the base station may include a continuous PRB, a discrete PRB, or a discrete RE, or at least the foregoing. The combination of the two patterns is not limited.
  • the potential time domain resource detection set may not be limited, and the potential time domain resource detection set may be defined as a preset or the base station is configured by high layer signaling.
  • the time-frequency resource detection set includes at least one time-frequency resource location, and may also include a combination of at least one time-domain resource location and at least one frequency-domain resource location, that is, a time domain resource that defines blind detection of the first control information is At least one specific PRB or CCE of at least one particular OFDM symbol.
  • the first frequency domain resource includes a downlink frequency domain resource
  • the terminal device performs data transmission with the base station by using the first frequency domain resource, and specifically includes:
  • the terminal device receives downlink data sent by the base station by using the downlink frequency domain resource.
  • the first frequency domain resource includes an uplink frequency domain resource
  • the terminal device performs data transmission with the base station by using the first frequency domain resource, and specifically includes:
  • the terminal device sends uplink data to the base station by using the uplink frequency domain resource.
  • the base station may adopt one of two manners.
  • the first control information is sent only to the terminal device not included in the slow DCI, and the terminal device included in the slow DCI still sends the existing fast DCI, where the frequency domain resources occupied by the existing fast DCI are allocated by the base station.
  • the first frequency domain resource has no mapping relationship.
  • the terminal device For the terminal device, if the slow DCI is detected and the existing fast DCI is detected, the resource allocation information indicated by the slow DCI is obtained, and the HARQ information (further, MCS, sTTI length, etc.) indicated by the existing fast DCI is combined with The base station performs data transmission; if the slow DCI is not detected, and the first control information is detected, the first frequency domain resource is obtained according to the frequency domain resource mapping occupied by the first control information, and the first The HARQ information (further, MCS, sTTI length, etc.) indicated by the control information is transmitted with the base station. Both the mapping method 1 and the mapping method 2 described above are applicable.
  • the first control information is sent for all terminal devices. Even if the terminal device of the RA is allocated in the slow DCI, the first frequency domain resource is obtained by the frequency domain resource location mapping of the first control information. For the terminal device, if the terminal device detects the slow DCI, the terminal device can save the blind detection complexity because the slow DCI may include the time-frequency domain location indication of the first control information. If the slow DCI is not detected, and the new first control information is detected, the first frequency domain resource is obtained according to the frequency domain resource mapping occupied by the first control information, and the HARQ information indicated by the first control information is combined (further, MCS, Information such as sTTI length) is transmitted with the base station.
  • MCS Information such as sTTI length
  • the advantage of the mode 2 is that, in addition to solving the problem that the existing base station temporarily has downlink or uplink burst service and needs to perform low-latency transmission with the terminal device, another problem can be solved: if the base station sends a slow DCI to the terminal device, The terminal device can still determine the first frequency domain resource according to the first control information because the channel condition of the legacy PDCCH is not good and the slow DCI is not correctly received.
  • the base station sends a time-frequency resource detection set to the terminal device, where the time-frequency resource detection set includes at least one time-frequency resource location, and the at least one time-frequency resource location includes the first control information.
  • the time-frequency resource detection set is preset or configured by a base station.
  • the first frequency domain resource includes a downlink frequency domain resource
  • the downlink frequency domain resource is used by the terminal device to receive data sent by the base station.
  • the first frequency domain resource includes an uplink frequency domain resource
  • the uplink frequency domain resource is used by the terminal device to send data to the base station.
  • FIG. 9 is a schematic structural diagram of Embodiment 1 of a terminal device according to an embodiment of the present disclosure.
  • the terminal device may include: a detection module 901 and a processing module 902;
  • the detecting module 901 is configured to detect second control information, where the second control information includes second frequency domain resource allocation information.
  • the detecting module 901 is further configured to detect at least one of the first control information and the third control information, where the first control information includes first frequency domain resource allocation information;
  • the processing module 902 is configured to perform data transmission with the base station according to the first frequency domain resource allocation information and/or the second frequency domain resource allocation information.
  • the second control information is corresponding to the at least one TTI, where the first control information and the third control information are used to indicate that the terminal device performs data transmission with the base station in the first TTI, where the at least One TTI includes the first TTI.
  • the detecting module 901 is specifically configured to:
  • processing module 902 is specifically configured to:
  • the detecting module 901 is further specifically configured to:
  • processing module 902 is specifically configured to:
  • the detecting module 901 is further configured to:
  • processing module 902 is specifically configured to:
  • processing module 902 is specifically configured to:
  • the frequency domain resource allocation set includes a preset or a base station, the frequency domain resource allocation set includes at least two frequency domain resources, and the first frequency domain resource allocation information includes the first frequency domain resource. a sequence number in the frequency domain resource allocation set;
  • Data transmission is performed with the base station by using the first frequency domain resource.
  • the detecting module 901 is specifically configured to:
  • the time-frequency resource detection set is preset or configured by a base station.
  • the detecting module 901 is specifically configured to:
  • the first control information is detected according to the cell radio network temporary identifier C-RNTI.
  • the first frequency domain resource allocation information includes downlink frequency domain resource allocation information
  • processing module 902 is specifically configured to:
  • the first frequency domain resource allocation information includes uplink frequency domain resource allocation information
  • processing module 902 is specifically configured to:
  • the modulation and coding policy MCS of the data transmission is preset or an MCS configured by the base station.
  • the first control information further includes indication information, where the indication information is used to indicate that the first frequency domain resource allocation information is included in the first control information.
  • the terminal device provided by the embodiment of the present invention may perform the foregoing method embodiments, and the implementation principles and technical effects thereof are similar, and details are not described herein again.
  • FIG. 10 is a schematic structural diagram of Embodiment 1 of a base station according to an embodiment of the present invention.
  • the base station may include: a generating module 1001 and a sending module 1002;
  • the generating module 1001 is configured to generate first control information, where the first control information includes first frequency domain resource allocation information, where the first frequency domain resource allocation information is used to indicate that the terminal device performs data transmission with the base station. ;
  • the sending module 1002 is configured to send the first control information to the terminal device.
  • the generating module 1001 is further configured to:
  • the second control information corresponds to at least one TTI;
  • the second control information includes second frequency domain resource allocation information; and the second frequency domain resource allocation information is used to indicate the terminal device and the base station Performing data transmission;
  • the at least one TTI includes a first TTI, where the first TTI includes the first control information indicating that the terminal device performs data transmission with the base station Corresponding TTI;
  • the sending module 1002 is further configured to send the second control information to the terminal device.
  • the first frequency domain resource allocation information includes downlink frequency domain resource allocation information
  • the downlink frequency domain resource allocation information is used to indicate that the terminal device receives the downlink data sent by the base station.
  • the first frequency domain resource allocation information includes uplink frequency domain resource allocation information
  • the uplink frequency domain resource allocation information is used to instruct the terminal device to send uplink data to the base station.
  • the first frequency domain resource allocation information includes a sequence number of the first frequency domain resource in the frequency domain resource allocation set
  • the frequency domain resource allocation set is preset or configured by a base station, and the frequency domain resource allocation set includes at least two sets of frequency domain resources; the first frequency domain resource is data transmission between the terminal device and the base station. resource of.
  • the sending module 1002 is further configured to:
  • time-frequency resource detection set includes at least one time-frequency resource location, where the at least one time-frequency resource location includes a time-frequency resource location occupied by the first control information .
  • the first control information further includes indication information, where the indication information is used to indicate that the first frequency domain resource allocation information is included in the first control information.
  • the modulation and coding policy MCS of the data transmission is a preset or MCS configured by the base station.
  • the base station provided by the embodiment of the present invention may perform the foregoing method embodiments, and the implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 11 is a schematic structural diagram of Embodiment 2 of a terminal device according to an embodiment of the present disclosure.
  • the terminal device may include: a detecting module 1101 and a processing module 1102;
  • the detecting module 1101 is configured to detect first control information sent by the base station
  • the processing module 1102 is configured to determine, according to the second frequency domain resource occupied by the first control information a first frequency domain resource; the second frequency domain resource has a corresponding relationship with the first frequency domain resource;
  • the processing module 1102 is further configured to perform data transmission with the base station by using the first frequency domain resource.
  • the corresponding relationship includes:
  • the second frequency domain resource includes the at least one second frequency domain resource unit, the first frequency domain resource includes the frequency domain resource group, and the frequency domain resource group includes at least one first frequency domain resource. unit;
  • the first frequency domain resource unit includes at least one resource particle RE
  • the second frequency domain resource unit includes at least one resource particle RE.
  • the first frequency domain resource unit comprises an RE or a resource block RB or a resource block group RBG
  • the second frequency domain resource unit comprises a resource particle RE or a resource block RB or a control channel unit CCE.
  • the corresponding relationship includes:
  • the detecting module 1101 is specifically configured to:
  • the time-frequency resource detection set includes at least one time-frequency resource location; and the at least one time-frequency resource location includes the first control information Time-frequency resource location;
  • the time-frequency resource detection set is preset or configured by a base station.
  • the first frequency domain resource includes a downlink frequency domain resource
  • processing module 1102 is specifically configured to:
  • the first frequency domain resource includes an uplink frequency domain resource
  • processing module 1102 is specifically configured to:
  • the terminal device provided by the embodiment of the present invention may perform the foregoing method embodiments, and the implementation principles and technical effects thereof are similar, and details are not described herein again.
  • FIG. 12 is a schematic structural diagram of Embodiment 2 of a base station according to an embodiment of the present invention.
  • the base station may include: a generating module 1201 and a sending module 1202;
  • the generating module 1201 is configured to generate first control information, where the first control information is used to indicate that the terminal device performs data transmission with the base station by using a first frequency domain resource, and the first frequency domain resource is second And determining, by the frequency domain resource, the second frequency domain resource has a corresponding relationship with the first frequency domain resource, where the second frequency domain resource includes a frequency domain resource occupied by the first control information;
  • the sending module 1202 is configured to send the first control information to the terminal device.
  • the corresponding relationship includes:
  • the second frequency domain resource includes the at least one second frequency domain resource unit, the first frequency domain resource includes the frequency domain resource group, and the frequency domain resource group includes at least one first frequency domain resource. unit;
  • the first frequency domain resource unit includes at least one resource particle RE
  • the second frequency domain resource unit includes at least one resource particle RE.
  • the first frequency domain resource unit comprises an RE or a resource block RB or a resource block group RBG
  • the second frequency domain resource unit comprises a resource particle RE or a resource block RB or a control channel unit CCE.
  • the corresponding relationship includes:
  • the sending module 1202 is further configured to:
  • time-frequency resource detection set includes at least one time-frequency resource location, where the at least one time-frequency resource location includes a time-frequency resource location occupied by the first control information ;
  • the time-frequency resource detection set is preset or configured by a base station.
  • the first frequency domain resource includes a downlink frequency domain resource
  • the downlink frequency domain resource is used by the terminal device to receive data sent by the base station.
  • the first frequency domain resource includes an uplink frequency domain resource
  • the uplink frequency domain resource is used by the terminal device to send data to the base station.
  • the base station provided by the embodiment of the present invention may perform the foregoing method embodiments, and the implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 13 is a schematic structural diagram of Embodiment 3 of a terminal device according to an embodiment of the present disclosure. As shown in FIG. 13, the terminal device may include:
  • the processor 1301 and the memory 1302 may further include a transceiver 1303.
  • the transceiver 1303 is configured to send or receive data information
  • the memory 1302 is configured to store execution instructions
  • the processor 1301 is configured to invoke an execution instruction in the memory 1302 to perform any method implementation corresponding to the terminal device. The method steps of the example.
  • the functions of the detection module and the processing module in the above terminal device may be implemented by the processor 1301.
  • the transceiver 1303 may be configured to receive data information sent by a base station or send data information to a base station.
  • FIG. 14 is a schematic structural diagram of Embodiment 3 of a base station according to an embodiment of the present invention. As shown in FIG. 14, the base station may include:
  • the processor 1401 and the memory 1402 may further include a transceiver 1403.
  • the transceiver 1303 is configured to send or receive data information
  • the memory 1402 is configured to store execution instructions
  • the processor 1401 is configured to invoke an execution instruction in the memory 1402 to perform any method embodiment corresponding to the base station. Method steps.
  • the functions of the generation modules in the above base stations may be implemented by the processor 1401.
  • the function of the transmitting module in the above base station can be implemented by the transceiver 1403.
  • the present invention can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is a better implementation. the way.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for causing a A computer device (which may be a personal computer, server, or network device, etc.) performs all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a removable hard disk, a read only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.
  • the base station embodiments described above are merely illustrative.
  • the division of the modules or units is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be used. Combinations can be integrated into another system, or some features can be ignored or not executed.
  • 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 modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment. Those of ordinary skill in the art can understand and implement without any creative effort.
  • the described systems, devices, and methods, and the schematic diagrams of various embodiments may be combined or integrated with other systems, modules, techniques or methods without departing from the scope of the present application.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, base station or unit, and may be in electronic, mechanical or other form.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un dispositif et un procédé de réception ou de transmission d'informations de commande. Le procédé de transmission des informations de commande comprend : un équipement terminal qui détecte des deuxièmes informations de commande ; l'équipement terminal détecte au moins une des premières informations de commande et des troisièmes informations de commande ; et l'équipement terminal réalise, avec une station de base, et conformément aux premières informations d'attribution de ressource de domaine de fréquence et/ou aux deuxièmes informations d'attribution de ressource de domaine de fréquence, la transmission de données. Le procédé peut être utilisé afin de réaliser, conformément aux premières informations d'attribution de ressource de domaine de fréquence et/ou aux deuxièmes informations d'attribution de ressource de domaine de fréquence, la transmission de données, résultant en une latence réduite.
PCT/CN2016/082071 2016-05-13 2016-05-13 Dispositif et procédé de réception ou de transmission d'informations de commande Ceased WO2017193382A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2016/082071 WO2017193382A1 (fr) 2016-05-13 2016-05-13 Dispositif et procédé de réception ou de transmission d'informations de commande
CN201680085434.3A CN109076512B (zh) 2016-05-13 2016-05-13 控制信息发送、接收方法和设备

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/082071 WO2017193382A1 (fr) 2016-05-13 2016-05-13 Dispositif et procédé de réception ou de transmission d'informations de commande

Publications (1)

Publication Number Publication Date
WO2017193382A1 true WO2017193382A1 (fr) 2017-11-16

Family

ID=60266960

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/082071 Ceased WO2017193382A1 (fr) 2016-05-13 2016-05-13 Dispositif et procédé de réception ou de transmission d'informations de commande

Country Status (2)

Country Link
CN (1) CN109076512B (fr)
WO (1) WO2017193382A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111556529A (zh) * 2019-02-11 2020-08-18 上海朗帛通信技术有限公司 一种被用于无线通信的用户设备、基站中的方法和装置
CN114245466A (zh) * 2017-11-28 2022-03-25 北京小米移动软件有限公司 上行反馈信息指示方法和上行反馈信息传输方法
US11581996B2 (en) * 2017-09-28 2023-02-14 Nokia Technologies Oy Flexible frame structure to support fast control information delivery

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101119277A (zh) * 2006-08-03 2008-02-06 北京三星通信技术研究有限公司 传输控制信令的设备和方法
CN105099634A (zh) * 2014-05-09 2015-11-25 中兴通讯股份有限公司 动态资源的分配方法及装置、基站、终端
WO2016064049A1 (fr) * 2014-10-21 2016-04-28 Lg Electronics Inc. Procédé permettant de transmettre et de recevoir des données dans un système de communication sans fil et son appareil

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102932122B (zh) * 2007-04-27 2015-12-16 华为技术有限公司 资源请求指示信息的时频资源分配装置
CN101640582B (zh) * 2008-07-28 2012-07-25 电信科学技术研究院 一种数据传输方法、系统及装置
PT2584827T (pt) * 2010-06-21 2018-06-22 Sun Patent Trust Aparelho terminal e método de comunicação do mesmo
CN101917766B (zh) * 2010-08-12 2015-09-16 中兴通讯股份有限公司 一种确定物理上行控制信道资源的方法及系统
CN102724757B (zh) * 2011-03-30 2017-11-07 中兴通讯股份有限公司 一种控制信道信息处理方法和系统
CN105227266B (zh) * 2012-01-12 2019-06-14 华为技术有限公司 传输上行控制信息的方法、用户设备和基站
CN103327591A (zh) * 2012-03-21 2013-09-25 北京三星通信技术研究有限公司 一种探测参考信号的功率控制方法
CN103002449B (zh) * 2012-11-29 2015-08-19 广州市香港科大霍英东研究院 一种基于频域的认知无线电协同感知与频谱竞争的方法
CN105516888B (zh) * 2014-09-26 2019-09-13 上海诺基亚贝尔股份有限公司 一种机器通信设备终端和基站中进行数据传输的方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101119277A (zh) * 2006-08-03 2008-02-06 北京三星通信技术研究有限公司 传输控制信令的设备和方法
CN105099634A (zh) * 2014-05-09 2015-11-25 中兴通讯股份有限公司 动态资源的分配方法及装置、基站、终端
WO2016064049A1 (fr) * 2014-10-21 2016-04-28 Lg Electronics Inc. Procédé permettant de transmettre et de recevoir des données dans un système de communication sans fil et son appareil

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HUAWEI ET AL.: "3GPP TSG RAN WG1 Meeting #84bis Rl-162588", DCI DESIGN FOR SHORT TTI, 15 April 2016 (2016-04-15), XP051080276 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11581996B2 (en) * 2017-09-28 2023-02-14 Nokia Technologies Oy Flexible frame structure to support fast control information delivery
CN114245466A (zh) * 2017-11-28 2022-03-25 北京小米移动软件有限公司 上行反馈信息指示方法和上行反馈信息传输方法
CN111556529A (zh) * 2019-02-11 2020-08-18 上海朗帛通信技术有限公司 一种被用于无线通信的用户设备、基站中的方法和装置
CN111556529B (zh) * 2019-02-11 2023-08-22 上海朗帛通信技术有限公司 一种被用于无线通信的用户设备、基站中的方法和装置

Also Published As

Publication number Publication date
CN109076512B (zh) 2021-02-23
CN109076512A (zh) 2018-12-21

Similar Documents

Publication Publication Date Title
CN110463305B (zh) 基站、终端及通信方法
CN109392141B (zh) 一种调整频域资源和发送指示信息的方法、装置及系统
CN107294897B (zh) 下行信息发送、接收方法及装置
CN102907160B (zh) 移动通信系统、基站装置、移动站装置以及通信方法
EP2584850B1 (fr) Transmission de liaison montante basée sur la contention
JP6106275B2 (ja) 拡張物理下りリンク制御チャネル（ｅｐｄｃｃｈ）に対してｔｄｄｐｕｃｃｈｈａｒｑリソースを割り当てる方法及びシステム
CN114097290A (zh) 用户装置及由用户装置执行的无线通信方法
CN111096035B (zh) 用于基于rnti的pdsch下行链路时隙聚合的用户设备、基站和方法
CN102869049B (zh) 传输控制信道指示信息的方法、基站和用户设备
US9602255B2 (en) System and method for data channel transmission and reception
CN110098904B (zh) 信息的传输方法及装置、存储介质、电子装置
CN110832931A (zh) 在无线通信系统中分配资源的方法和使用该方法的设备
US11330595B2 (en) Method for sending control information, method for receiving control information, and apparatus
CN109995497A (zh) 下行控制信息传输方法
CN107925544A (zh) 无线通信系统中的用于通信的方法和装置
CN114600537B (zh) 用于pdsch的传输配置指示的用户装备、基站和方法
WO2010133043A1 (fr) Procédé de répartition de multiples sous-trames et système, terminal et station de base correspondants
JP2013526088A (ja) 物理上りリンク制御チャネルリソースを割り当てるための通信方法、通信システム、基地局、ユーザ装置、および、集積回路
CN104081710A (zh) 用于控制信道的搜索空间布置
WO2013071754A1 (fr) Procédé et système pour transmettre des données de commande de liaison descendante
WO2017118229A1 (fr) Procédé, dispositif et système de planification de ressources
KR20200039753A (ko) 데이터 전송 방법, 장치 및 통신 시스템
TW201803384A (zh) 傳輸數據的方法及裝置
EP3322212A1 (fr) Dispositif terminal, dispositif station de base, procédé de communication et circuit intégré
CN111615861A (zh) 多比特调度请求

Legal Events

Date Code Title Description
NENP Non-entry into the national phase

Ref country code: DE

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16901337

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 16901337

Country of ref document: EP

Kind code of ref document: A1