WO2018228096A1 - 一种下行控制信息发送与接收方法及设备 - Google Patents

一种下行控制信息发送与接收方法及设备 Download PDF

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Publication number
WO2018228096A1
WO2018228096A1 PCT/CN2018/086381 CN2018086381W WO2018228096A1 WO 2018228096 A1 WO2018228096 A1 WO 2018228096A1 CN 2018086381 W CN2018086381 W CN 2018086381W WO 2018228096 A1 WO2018228096 A1 WO 2018228096A1
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WO
WIPO (PCT)
Prior art keywords
information
downlink control
terminal
base station
beam direction
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/CN2018/086381
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English (en)
French (fr)
Inventor
王磊
托尼
郑方政
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China Academy of Telecommunications Technology CATT
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China Academy of Telecommunications Technology CATT
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Publication date
Application filed by China Academy of Telecommunications Technology CATT filed Critical China Academy of Telecommunications Technology CATT
Priority to EP18818155.6A priority Critical patent/EP3641202B1/en
Priority to US16/623,370 priority patent/US11405906B2/en
Publication of WO2018228096A1 publication Critical patent/WO2018228096A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0408—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more beams, i.e. beam diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
    • H04B7/06952—Selecting one or more beams from a plurality of beams, e.g. beam training, management or sweeping
    • H04B7/06968—Selecting one or more beams from a plurality of beams, e.g. beam training, management or sweeping using quasi-colocation [QCL] between signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a downlink control information sending and receiving method and device.
  • a physical downlink control channel (PDCCH) is used to carry Downlink Control Information (DCI) and other control information. Since the frequency of the frequency domain resource used by the current LTE communication system is low, the omnidirectional antenna can be used to transmit downlink control information. Correspondingly, the terminal can monitor and receive the downlink control information in any direction.
  • DCI Downlink Control Information
  • a higher frequency band is also used for data transmission, for example, a frequency band above 6 GHz.
  • a frequency band of several tens of GHz and the frequency of the high-frequency band signal is faster when transmitting data through the high-frequency band, in order to resist the faster attenuation speed to ensure the quality of communication, it is necessary to perform data by beamforming. Transmission, because the signal strength outside the beam direction is very low, the corresponding information can be monitored and received only in the correct beam direction. Therefore, the terminal currently monitors and receives the downlink control information in any direction for the future wireless communication system. Not applicable.
  • the terminal listens to the downlink control information in any direction, since in the future wireless communication system, because the frequency band is higher, the workload of the terminal monitoring is greater than that in the prior art. In the lower case, the power consumption during the monitoring will increase, which makes the terminal's battery life poor.
  • the embodiments of the present invention provide a downlink control information sending and receiving method and device, which are used to solve the technical problem that the power consumption is too large due to the large workload of the terminal monitoring in a high frequency situation.
  • the first aspect provides a downlink control information sending method, where the method includes:
  • the base station Determining, by the base station, at least one beam direction for transmitting downlink control information of the terminal, and generating first downlink control channel configuration information according to the determined at least one beam direction; the first downlink control channel configuration information is used to indicate Describe a beam direction of the downlink control information that is sent by the base station to the terminal;
  • the base station After the base station sends the first downlink control channel configuration information to the terminal, the downlink control information is sent to the terminal by using the at least one beam direction.
  • the method further includes: determining, by the base station, beam direction information by using a beam management process; The base station transmits a beam direction of the control information to the terminal; or the base station determines the beam direction information in the random access process of the terminal, specifically, the base station receives a preamble sequence sent by the terminal, and the preamble sequence Carrying the corresponding information of the SSB received by the terminal. And determining, by the base station, at least one beam direction for transmitting downlink control information of the terminal, where the base station determines, according to the beam direction information, at least one beam direction for transmitting downlink control information of the terminal.
  • the first downlink control channel configuration information includes QCL information.
  • the terminal demodulates a reference signal of a downlink control channel carrying the downlink control information and a reference signal of a beam management process of the terminal.
  • the difference information; or the QCL information is a reference signal of a downlink synchronization process received by the terminal or a demodulation reference signal for demodulating broadcast information carried by the physical broadcast channel received by the terminal as a reference signal, Decoding, by the terminal, a reference signal of a downlink control channel that carries the downlink control information, and a reference signal of the downlink synchronization process or a difference information of a demodulation reference signal of the broadcast information carried by the physical broadcast channel.
  • the generating, by the base station, the first downlink control channel configuration information according to the determined at least one beam direction including:
  • the base station allocates a beam direction to each control resource set in the at least one control resource set configured by the base station according to the determined at least one beam direction, and according to each of the at least one control resource set
  • the first downlink control channel configuration information is generated as a result of the control resource set allocating the beam direction.
  • the at least one control resource set is configured to transmit the downlink control information; the beam directions allocated by different control resource sets in the at least one control resource set are the same or different; The different donors of the downlink control channel of the downlink control information are allocated the same or different beam directions.
  • the method further includes: The base station configures one or more of the QCL information for each control resource set in the at least one control resource set.
  • the determining, by the base station, the multiple QLC information for each control resource set in the at least one control resource set including: the base station is a different aggregation level in each of the control resource sets.
  • the downlink control channel candidate is configured with different QCL information; or the base station configures different QCL information for different candidates of the downlink control channel of different aggregation levels in each control resource set, or the base station is
  • Each candidate in each control resource set is configured with different QCL information; or, the base station configures a plurality of different QCL information for each candidate in each of the control resource sets.
  • the sending, by the base station, the first downlink control channel configuration information to the terminal includes: sending, by the base station, the first downlink control channel configuration information to the terminal by using radio resource control signaling; Or the base station sends the first downlink control channel configuration information to the terminal by using message2 or message4 in the random access procedure.
  • the method further includes: if the base station is configured to transmit at least one beam of downlink control information of the terminal When the direction is adjusted, the base station sends, to the terminal, second downlink control channel configuration information for instructing the base station to adjust at least one beam direction for transmitting downlink control information of the terminal.
  • the base station sends, to the terminal, second downlink control channel configuration information, which is used to indicate that the base station adjusts at least one beam direction for transmitting downlink control information of the terminal, where the base station passes the L1.
  • the signaling or MAC CE sends the second downlink control channel configuration information to the terminal.
  • the second aspect provides a downlink control information receiving method, where the method includes: receiving, by the terminal, first downlink control channel configuration information sent by the base station; where the first downlink control channel configuration information includes determining, by the base station, Information about at least one beam direction of the downlink control information of the terminal; the terminal determining the at least one beam direction according to the first downlink control channel configuration information; the terminal listening in the at least one beam direction and Receiving the downlink control information.
  • the determining, by the terminal, the at least one beam direction according to the first downlink control channel configuration information that: the terminal determining, according to the first downlink control channel configuration information, that the base station is at least one Controlling a beam direction allocated by each control resource set in the resource set; wherein the at least one control resource set is a control resource set configured by the base station to the terminal to transmit the downlink control information; Allocating the same or different beam directions for different control resource sets in the at least one control resource set; the different donors of the downlink control channels carrying the downlink control information in each control resource set are allocated the same beam direction or different.
  • the first downlink control channel configuration information includes QCL information, where the terminal demodulates the downlink that carries the downlink control information when the reference signal of the beam management process is used as a reference signal.
  • Corresponding parameter information of a reference signal of the control channel and a reference signal of the beam management process of the terminal; or the QCL information is a reference signal of a downlink synchronization process received by the terminal or demodulated by the terminal.
  • the terminal demodulates the reference signal of the downlink control channel carrying the downlink control information and the reference signal of the downlink synchronization process or demodulates the physical Relative parameter information of a demodulation reference signal of broadcast information carried by a broadcast channel.
  • the terminal determines, according to the first downlink control channel configuration information, a beam direction allocated by the base station to each control resource set in the at least one control resource set, including: when the terminal determines the When the base station configures one QCL information for each control resource set in the at least one control resource set, the terminal determines, according to the QCL information, a beam direction corresponding to each control resource set; or, when When the terminal determines that the base station configures multiple pieces of the QCL information for each control resource set in the at least one control resource set, the terminal determines, according to the QCL information, different aggregation levels in each control resource set.
  • the method before the receiving, by the terminal, the first downlink control channel configuration information sent by the base station, the method further includes: the terminal generating beam direction information according to the received signal strength of different beam directions of the base station.
  • the terminal sends the beam direction information to the base station, where the beam direction information indicates a beam direction in which the base station transmits control information to the terminal.
  • the terminal sends the beam direction information to the base station, where the terminal sends the beam direction information to the base station in a beam management process of the base station; or the terminal is in a random access process. Transmitting the beam direction information to the base station.
  • the receiving, by the terminal, the first downlink control channel configuration information that is sent by the base station includes: receiving, by the terminal, the first downlink control included in a radio resource control signaling sent by the base station Channel configuration information; or, the terminal receives the first downlink control channel configuration information included in message2 or message4 sent by the base station in a random access procedure.
  • the method further includes: receiving, by the terminal, second downlink control channel configuration information sent by the base station, where the second downlink control channel configuration information is used to indicate that the base station is configured to perform downlink control on the terminal Information for adjusting at least one beam direction of the information; the terminal determining the adjusted at least one beam direction according to the second downlink control channel configuration information; the terminal listening and receiving in the adjusted at least one beam direction The downlink control information.
  • the terminal receives the second downlink control channel configuration information that is sent by the base station, where the terminal receives the second downlink control channel configuration information sent by the base station by using L1 signaling or a MAC CE.
  • a third aspect provides a downlink control information sending device, where the device includes: a first determining unit, configured to determine at least one beam direction for transmitting downlink control information of the terminal, and generate according to the determined at least one beam direction a first downlink control channel configuration information, where the first downlink control channel configuration information is used to indicate a beam direction of the downlink control information that is sent by the device to the terminal, and a first sending unit is configured to After transmitting the first downlink control channel configuration information, the terminal sends the downlink control information to the terminal by using the at least one beam direction.
  • the first determining unit is further configured to: determine, by using a beam management process, beam direction information, before determining at least one beam direction for transmitting downlink control information of the terminal;
  • the device transmits a beam direction of the control information to the terminal; or determines the beam direction information in a random access procedure of the terminal.
  • the first determining unit determines at least one beam direction for transmitting the downlink control information of the terminal, where the first determining unit determines, according to the beam direction information, downlink control information for transmitting the terminal. At least one beam direction.
  • the first downlink control channel configuration information includes QCL information, where the terminal demodulates the downlink that carries the downlink control information when the reference signal of the beam management process is used as a reference signal. And differentiating information of the reference signal of the control channel and the reference signal of the beam management process of the terminal; or the QCL information is a reference signal of a downlink synchronization process received by the terminal or demodulating the physicality received by the terminal.
  • the terminal demodulates the reference signal of the downlink control channel carrying the downlink control information and the reference signal of the downlink synchronization process or demodulates the physical broadcast The difference information of the demodulation reference signal of the broadcast information carried by the channel.
  • the device further includes: an allocating unit, where the allocating unit is configured to allocate a beam direction to each control resource set in the at least one control resource set configured by the base station according to the determined at least one beam direction.
  • the at least one control resource set is configured to transmit the downlink control information; the beam direction allocated by the different control resource set in the at least one control resource set is the same or different; and the bearer in each control resource set
  • the different donors of the downlink control channel of the downlink control information are allocated the same or different beam directions.
  • the first determining unit generates the first downlink control channel configuration information according to the determined at least one beam direction, where the first determining unit is configured to control each of the at least one control resource set according to the allocation unit.
  • the first downlink control channel configuration information is generated as a result of the resource set allocating the beam direction.
  • the device further includes: a configuration unit, where the configuration unit is configured to: at the at least one control resource set configured by the base station for the terminal, according to the determined at least one beam direction, After the resource set allocates the beam direction, one or more of the QCL information is configured for each of the at least one control resource set.
  • the configuration unit is configured to: at the at least one control resource set configured by the base station for the terminal, according to the determined at least one beam direction, After the resource set allocates the beam direction, one or more of the QCL information is configured for each of the at least one control resource set.
  • the configuration unit configures one or more pieces of the QCL information for each control resource set in the at least one control resource set, including: the configuration unit is different in each of the control resource sets The downlink control channel of the aggregation level is configured with different QCL information; or, the configuration unit configures different QCL information for different candidates of the downlink control channel of different aggregation levels in each control resource set; or The configuration unit configures a plurality of different QCL information for each candidate in each of the control resource sets.
  • the first sending unit sends the first downlink control channel configuration information to the terminal, where the first sending unit sends the first downlink to the terminal by using radio resource control signaling. And controlling, by the first sending unit, the first downlink control channel configuration information to the terminal by using message2 or message4 in the random access procedure.
  • the device further includes: an adjusting unit, configured to: adjust at least one beam direction for transmitting downlink control information of the terminal; the first sending unit is further configured to: The terminal sends second downlink control channel configuration information for instructing the base station to adjust at least one beam direction for transmitting downlink control information of the terminal.
  • the first sending unit sends, to the terminal, second downlink control channel configuration information, which is used to indicate that the base station adjusts at least one beam direction for transmitting downlink control information of the terminal, where The first sending unit sends the second downlink control channel configuration information to the terminal by using L1 signaling or a MAC CE.
  • the fourth aspect provides a downlink control information receiving device, where the device includes: a receiving unit, configured to: receive first downlink control channel configuration information sent by the base station; and the first downlink control channel configuration information includes the base station Determining at least one beam direction information for transmitting the downlink control information of the terminal; the second determining unit is configured to: determine the at least one beam direction according to the first downlink control channel configuration information; And configured to: monitor and receive the downlink control information in the at least one beam direction.
  • the determining, by the second determining unit, the at least one beam direction according to the first downlink control channel configuration information that: the second determining unit determines, according to the first downlink control channel configuration information, The base station allocates a beam direction allocated to each control resource set in the at least one control resource set; wherein the at least one control resource set is a control configured by the base station to the terminal to transmit the downlink control information a set of resources; the base station allocates the same or different beam directions for different control resource sets in the at least one control resource set; and different candidates of the downlink control channel carrying the downlink control information in each control resource set
  • the assigned beam directions are the same or different.
  • the first downlink control channel configuration information includes QCL information, where the terminal demodulates the downlink that carries the downlink control information when the reference signal of the beam management process is used as a reference signal.
  • QCL information is a reference signal of a downlink synchronization process received by the terminal or demodulated by the terminal
  • the terminal demodulates the reference signal of the downlink control channel carrying the downlink control information and the reference signal of the downlink synchronization process or demodulates the physical Relative parameter information of a demodulation reference signal of broadcast information carried by a broadcast channel.
  • the second determining unit according to the first downlink control channel configuration information, determining a beam direction allocated by the base station to each control resource set in the at least one control resource set, includes:
  • the second determining unit determines the each according to the QCL information Controlling a beam direction corresponding to the resource set; or, when the second determining unit determines that the base station configures the QCL information for each control resource set in the at least one control resource set, the second determining Determining, according to the QCL information, a beam direction corresponding to the downlink control channel of different aggregation levels in each control resource set, or a beam direction corresponding to different candidates of the downlink control channel of different aggregation levels, or A plurality of beam directions corresponding to each candidate in each control resource set.
  • the device further includes: a generating unit and a second sending unit, where the generating unit is configured to: before the receiving unit receives the first downlink control channel configuration information sent by the base station, according to the received location Generating beam direction information by using signal strengths in different beam directions of the base station; the second sending unit is configured to: send the beam direction information to the base station, where the beam direction information indicates that the base station transmits control information to the device Beam direction.
  • the generating unit is configured to: before the receiving unit receives the first downlink control channel configuration information sent by the base station, according to the received location Generating beam direction information by using signal strengths in different beam directions of the base station
  • the second sending unit is configured to: send the beam direction information to the base station, where the beam direction information indicates that the base station transmits control information to the device Beam direction.
  • the receiving unit receives the first downlink control channel configuration information sent by the base station, where the receiving unit receives the first downlink control included in the radio resource control signaling sent by the base station Channel configuration information; or, the receiving unit receives the first downlink control channel configuration information included in message2 or message4 sent by the base station in a random access procedure.
  • the receiving unit is further configured to: receive second downlink control channel configuration information that is sent by the base station, where the second downlink control channel configuration information is used to indicate downlink control information that is sent by the base station to the device
  • the at least one direction of the beam is adjusted;
  • the second determining unit is further configured to: determine the adjusted at least one beam direction according to the second downlink control channel configuration information;
  • the monitoring unit is further configured to: The adjusted downlink control information is monitored and received in at least one beam direction.
  • the receiving unit receives the second downlink control channel configuration information sent by the base station, where the receiving unit receives the second downlink control channel configuration information sent by the base station by using L1 signaling or a MAC CE. .
  • a computer apparatus comprising a processor, where the processor is configured to implement a downlink control information sending method according to the first aspect and downlink control information provided by the second aspect, when the processor is configured to execute a computer program stored in a memory A method of receiving the method of any of the methods.
  • a computer readable storage medium where the computer program is stored, and when the computer program is executed by the processor, the method for transmitting the downlink control information and the method for receiving the downlink control information provided by the second aspect are implemented.
  • the base station sends the first downlink control channel configuration information to the terminal before transmitting the downlink control information, where the first downlink control channel configuration information is used to indicate the downlink control sent by the base station to the terminal.
  • the terminal After receiving the first downlink control channel configuration information, the terminal can monitor and receive the downlink control information in the corresponding beam direction, so that the terminal can accurately and timely obtain the downlink control information sent by the base station. Reduce the latency of data transmission. In this way, the terminal does not need to monitor in any direction, but only monitors in the corresponding beam direction, which can save the power of the terminal more.
  • FIG. 1 is a schematic flowchart of a method for sending and receiving downlink control information according to an embodiment of the present disclosure
  • FIG. 2 is a schematic diagram of a base station assigning a beam direction to each control resource set according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a base station assigning different beam directions to downlink control channels of different aggregation levels in each control resource set according to an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of a base station assigning different beam directions to different candidates of downlink control channels of different aggregation levels in each control resource set according to an embodiment of the present disclosure
  • FIG. 5 is a schematic structural diagram of a downlink control information sending apparatus according to an embodiment of the present disclosure
  • FIG. 6 is a schematic structural diagram of a downlink control information receiving device according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a computer device according to an embodiment of the present invention.
  • a base station refers to a device in an access network that communicates with a wireless terminal device over one or more cells on an air interface.
  • the base station can be configured to convert the received air frame to an Internet Protocol (IP) packet as a router between the user equipment and the rest of the access network, wherein the rest of the access network can include an IP network.
  • IP Internet Protocol
  • the base station can also coordinate attribute management of the air interface.
  • the base station may include an evolved base station (eNB or e-NodeB, evolutional Node B) in a Long Term Evolution (LTE) system or an evolved LTE system (LTE-A), or may also include
  • the next generation node B (gNB) in the 5G system is not limited in the embodiment of the present invention.
  • a terminal which is a device that provides voice and/or data connectivity to a user, for example, may include a handheld device having a wireless connection function, or a processing device connected to a wireless modem.
  • the user equipment can communicate with the core network via a Radio Access Network (RAN) to exchange voice and/or data with the RAN.
  • the terminal may include a UE, a wireless terminal device, a mobile terminal device, a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile, a Remote Station, and an access.
  • AP Access Point
  • a mobile phone or "cellular” phone
  • a computer with a mobile terminal device
  • a portable, pocket, handheld, computer built-in or in-vehicle mobile device For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistant (PDA), Smart Devices such as wearable devices.
  • PCS Personal Communication Service
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • each downlink subframe in the LTE communication system includes a control area and a data area, the control area is used to carry control information, and the data area is used to carry data.
  • the PDCCH is located in the control region.
  • the control region of each downlink subframe may include multiple PDCCHs, and one PDCCH occupies one control channel element (CCE).
  • the base station may select one, two, four or eight CCEs to carry one downlink control information, where 1, 2, 4 or 8 is the aggregation level (AL) of the PDCCH, and each aggregation level corresponds to the PDCCH of the aggregation level.
  • the base station can configure the corresponding aggregation level according to the amount of information transmitted and the channel conditions.
  • the terminal Since the terminal does not know the size and format of the PDCCH carrying the downlink control information, but the terminal knows the information that it expects, the terminal will attempt to decode the downlink control information in the control region to find the downlink sent by the base station to itself.
  • the control information includes a CCE aggregation level and a CCE start position, and further determines downlink control information sent by the base station to the terminal to receive the downlink control information. This process is called PDCCH blind detection.
  • the foregoing PDCCH blind detection is performed based on the current terminal listening and receiving downlink control information in an arbitrary direction.
  • a higher frequency band is also used for data transmission, for example, a frequency band above 6 GHz.
  • a frequency band of several tens of GHz and the frequency of the high-frequency band signal is faster when the data is transmitted through the high-frequency band, and in order to resist the faster attenuation speed to ensure the quality of the communication, the data transmission by the beam is required. Since the signal strength outside the beam direction is very low, the corresponding information can be monitored and received only in the correct beam direction. Therefore, the manner in which the terminal monitors and receives the downlink control information in any direction is not for the future wireless communication system. Be applicable.
  • the embodiment of the present invention provides a method for transmitting downlink control information, in which the base station sends the first downlink control channel configuration information to the terminal before sending the downlink control information, where the first downlink is
  • the control channel configuration information is used to indicate the beam direction of the downlink control information sent by the base station to the terminal, and after receiving the first downlink control channel configuration information, the terminal may monitor and receive the downlink control information in the corresponding beam direction, so that The terminal can accurately and timely obtain downlink control information sent by the base station to reduce the delay of data transmission. In this way, the terminal does not need to monitor in any direction, but only monitors in the corresponding beam direction, which can save the power of the terminal more.
  • an embodiment of the present invention provides a method for transmitting downlink control information, and a flow of the method is described as follows. In the following flow, the flow of the downlink control information receiving method is also involved.
  • Step S101 The terminal sends beam direction information to the base station, and the base station receives beam direction information.
  • the base station when the base station needs to send downlink control information to the terminal, the base station first needs to determine which beam direction to send the downlink control information. Wherein, the base station needs to know which beam direction to transmit the downlink control information, and first needs to know the approximate location of the terminal within the coverage of the base station.
  • the base station determines the approximate location of the terminal including but not limited to the following methods:
  • the base station can determine the approximate location of the terminal during beam management with the terminal. Specifically, the base station may send test information to the terminal through different beam directions. After receiving the test information of different beam directions, the terminal may determine the received signal strengths of different beam directions, and then generate a beam direction information according to the signal strength. And transmitting the beam direction information to the base station, where the beam direction information is used to indicate which beam directions the base station can transmit downlink control information to the terminal, for example, the signal strength in the beam direction information is strongest or the signal strength is greater than a certain Threshold.
  • the base station can receive the beam direction information, and the base station can determine the approximate location of the terminal according to the received beam direction information.
  • the base station can determine the approximate location of the terminal in the downlink synchronization process or the random access procedure of the terminal. Specifically, the terminal may directly send the beam direction information to the base station during the downlink synchronization process between the terminal and the base station or during the random access process. Correspondingly, the base station can receive the beam direction information, and determine the approximate location of the terminal according to the received beam direction information.
  • step S101 is also presented in FIG. 1 together, but it is to be understood that step S101 is not a step that must be performed.
  • the base station may determine the approximate location of the terminal according to the moving trajectory or the moving speed of the terminal.
  • the approximate location of the terminal may also be determined by other possible manners. This is not a limitation.
  • Step S102 The base station determines at least one beam direction of the downlink control information used for the transmission terminal.
  • the base station may determine the approximate location of the terminal according to the received beam direction information, and further determine at least one beam direction for transmitting downlink control information to the terminal.
  • the base station may also determine the beam direction with a higher signal strength indicated in the beam direction information as at least one beam direction for transmitting downlink control information to the terminal.
  • the base station can determine the number of beam directions according to information such as the format of the downlink control information to be sent.
  • the base station can also determine the number of beam directions according to other possible information, which is not limited by the embodiment of the present invention.
  • Step S103 The base station generates first downlink control channel configuration information according to the determined at least one beam direction.
  • the first downlink control channel configuration information may be generated according to the at least one beam direction.
  • the first downlink control channel configuration information may include QCL (Quasi-co-location) information.
  • QCL Quadasi-co-location
  • the terminal demodulates the difference information between the reference signal of the downlink control channel carrying the downlink control information and the reference signal of the beam management process of the terminal; or, the QCL information is received by the terminal.
  • the terminal demodulates the reference signal of the downlink control channel carrying the downlink control information and the downlink synchronization process.
  • the reference signal or the difference information of the demodulation reference signal of the broadcast information carried by the physical broadcast channel is demodulated.
  • the first downlink control channel configuration information may further include other parameter information, which is not limited in this embodiment of the present invention.
  • the base station may allocate, according to the determined at least one beam direction, a beam direction for each control resource set (CORESET, control resource set) in the at least one control resource set configured by the base station.
  • the control resource set is a set of resources used to transmit the downlink control information.
  • the base station may assign different or the same beam direction to each control resource set, and the base station may also allocate different or the same beam direction for different control resource sets.
  • the base station when the base station allocates only one beam direction for each control resource set, the base station configures a QCL information related to the beam direction for each control resource set.
  • the base station assigns one beam direction to each control resource set.
  • the base station configures two control resource sets, that is, the control resource set 1 and the control resource set 2, so that the base station can allocate one beam direction for the control resource set 1 and the control resource set 2, that is, the control resource set 1
  • the beam direction 1 is assigned, and the beam direction 2 is assigned to the control resource set 2.
  • the base station configures QCL information related to the allocated beam direction for the two control resource sets. For example, the base station configures QCL1 information related to beam direction 1 for the control resource set 1, and QCL2 information related to beam direction 1 for the control resource set 2.
  • the beam direction 1 and the beam direction 2 may be the same beam direction or different beam directions.
  • the base station configures the same QCL information for the two control resource sets, that is, QCL1 information and QCL2 information are the same; when beam direction 1 and beam direction 2 When the direction is different, the base station configures different QCL information for the two control resource sets, that is, the QCL1 information and the QCL2 information are different.
  • the base station allocates multiple beam directions for each control resource set, that is, when the base station configures multiple QCL information for each control resource set, including but not limited to the following two cases:
  • the base station may allocate different beam directions for downlink control channels of different aggregation levels in the control resource set, and the base station configures different QCL information for downlink control channels of different aggregation levels.
  • the base station assigning different beam directions to downlink control channels of different aggregation levels in each control resource set.
  • the base station is configured with a control resource set 3 for the terminal.
  • the control resource set 3 includes two downlink control channels of the aggregation level, that is, the aggregation level 1 and the aggregation level 2, and the base station can allocate the downlink control channel of the aggregation level 1.
  • Beam direction 3, and beam direction 4 is assigned to the downlink control channel of aggregation level 2.
  • the base station configures QCL3 information related to beam direction 3 for the downlink control channel of aggregation level 1, and configures QCL4 information related to beam direction 4 for the downlink control channel of aggregation level 2 .
  • the base station may allocate different beam directions for different candidate items of the downlink control channel of different aggregation levels in the control resource set, and the base station configures different QCLs for different candidates of downlink control channels of different aggregation levels. information.
  • the base station configures a control resource set 4 for the terminal, where the control resource set 4 includes two aggregation level downlink control channels, that is, aggregation level 1 and aggregation level 2, and each aggregation level may include multiple candidates.
  • aggregation level 1 includes N candidates
  • aggregation level 2 includes M candidates.
  • the base station may allocate beam direction 5-1 for N/2 candidates of aggregation level 1 and allocate beam direction 6-1 for the remaining N/2 candidates; and the base station may allocate beams for M/2 candidates of aggregation level 2 Direction 5-2, and assign beam directions 6-2 for the remaining M/2 candidates.
  • the base station also configures QCL5 information related to beam direction 5-1 for N/2 candidates of aggregation level 1, and configures and beam direction for the remaining N/2 candidates. 1 related QCL6 information; and QCL5 information associated with beam direction 5-2 is configured for M/2 candidates of aggregation level 2, and QCL6 information associated with beam direction 6-2 is configured for the remaining M2 candidates.
  • the beam direction 5-1 and the beam direction 5-2 herein may be the same beam direction, and the QCL information related to the beam direction 5-1 is the same as the QCL information related to the beam direction 5-2.
  • the beam direction 5-1 and the beam direction 5-2 may also be different beam directions, and the corresponding QCL information related to the beam direction 5-1 is related to the beam direction 5-2.
  • the QCL information is different.
  • the beam direction 6-1 and the beam direction 6-2 are similar thereto, and details are not described herein again.
  • the base station may also allocate multiple beam directions for each candidate, and correspondingly, the base station configures a plurality of QCL information corresponding to the multiple beam directions for the candidate.
  • the base station may include information for indicating the foregoing correspondence in the first downlink control channel configuration information that is sent to the terminal.
  • the first downlink control channel configuration information may be sent by the base station to the terminal by using RRC signaling or message2 or message4 in the random process, or the indication message may also be the base station passing layer 1 (Layer 1, L1) signaling or media.
  • the access control unit (MAC CE) is sent to the terminal.
  • the base station can also notify the terminal of the corresponding relationship by sending an additional indication message to the terminal, which is not limited in this embodiment of the present invention.
  • the base station and the terminal may also pre-arrange one of the foregoing correspondences, and the first downlink control channel configuration information sent by the base station to the terminal may not include information for indicating the corresponding relationship, and the base station does not need to
  • the terminal further sends an indication message to the terminal, and the terminal can determine, by using a pre-agreed manner, a correspondence between multiple QCL information and different control resource sets, or a correspondence between multiple QCL information and downlink control channels of different aggregation levels, or multiple QCL information. Correspondence with different candidates.
  • Step S104 The base station sends the first downlink control channel configuration information, and the terminal receives the first downlink control channel configuration information.
  • the first downlink control channel configuration information may be sent to the terminal.
  • the base station may send the first downlink control channel configuration information to the terminal by using Radio Resource Control (RRC) signaling, or the second base station may also pass the second access process of the terminal.
  • RRC Radio Resource Control
  • a message (message 2) or a message 4 (message 4) transmits the first downlink control channel configuration information to the terminal.
  • the base station may also send the first downlink control channel configuration information to the terminal in other possible manners, which is not limited in this embodiment of the present invention.
  • the terminal may receive the first downlink control channel configuration information sent by the base station.
  • Step S105 The terminal determines at least one beam direction according to the first downlink control channel configuration information.
  • the terminal may obtain the QCL information included in the first downlink control channel configuration information, and the terminal may determine the base station according to the QCL information terminal.
  • the beam direction for transmitting downlink control information is the case of the present invention.
  • the terminal determines that the base station allocates one beam direction for each control resource set, that is, the base station configures one QCL information for each control resource set, then the terminal receives the corresponding control resource set. There is also only one QCL information, and the terminal determines the beam direction corresponding to the QCL information based on the QCL information.
  • the terminal determines that the base station allocates multiple beam directions for each control resource set, that is, when the base station configures multiple QCL information for each control resource set, for example, the configuration manners illustrated in FIG. 3 and FIG. . Then, the terminal receives a plurality of QCL information corresponding to the control resource set, and the terminal may determine, according to the plurality of QCL information, a beam direction corresponding to each of the plurality of QCL information.
  • the terminal further determines beam directions corresponding to different candidates.
  • the terminal may, according to the QCL information, and the information about the correspondence relationship included in the first downlink control channel configuration information, Determining QCL information configured by the base station for each control resource set of the terminal, or QCL information configured by the base station for different aggregation level downlink control channels, or QCL information configured by the base station for each candidate.
  • the terminal may determine the beam direction corresponding to each control resource set, or the beam direction corresponding to the downlink control channel of different aggregation levels, or for each The direction of the beam corresponding to the candidate.
  • the direction of the beam corresponding to each candidate may be one or more.
  • the terminal may further determine a corresponding beam direction according to one of the foregoing correspondences pre-agreed with the base station, and then includes, but is not limited to, the following situations:
  • the base station configures different QCL information for the downlink control channels of different aggregation levels in the resource set, and the terminal receives the first downlink control channel configuration information and obtains the information included therein.
  • the beam direction corresponding to the plurality of QCL information may be directly determined according to the plurality of QCL information, and beam directions corresponding to the downlink control channels of different aggregation levels are determined. For example, in the case of the example illustrated in FIG.
  • the terminal may know, according to the QCL3 information, that the beam direction of the downlink control channel of the aggregation level 1 included in the control resource set 3 is the beam direction 3, and that the aggregation level 2 included in the control resource set 3 is known according to the QCL4 information.
  • the beam direction of the downlink control channel is beam direction 4.
  • the base station configures different QCL information for different candidates of the downlink control channels of different aggregation levels in the resource set, and the terminal receives the first downlink control channel configuration information.
  • the beam direction corresponding to the plurality of QCL information may be directly determined according to the plurality of QCL information, and the beam direction corresponding to the different candidates may be determined. For example, in the case illustrated in FIG.
  • the terminal can know, according to the QCL5 information, that the beam direction of the N/2 candidates of the aggregation level 1 included in the control resource set 4 is the beam direction 5-1, and the M/2 candidates of the aggregation level 2
  • the beam direction is the beam direction 5-2; and the terminal can know, according to the QCL6 information, that the beam directions of the remaining N/2 candidates of the aggregation level 2 included in the control resource set 4 are the beam direction 6-1, and the remaining M/ of the aggregation level 2
  • the beam direction of the two candidates is the beam direction 6-2.
  • the terminal may determine multiple QCL information with the candidate according to the multiple QCL information. Corresponding beam direction.
  • Step S106 The base station sends downlink control information, and the terminal monitors and receives downlink control information.
  • the downlink control information may be sent to the terminal by using the beam direction.
  • the terminal may monitor downlink control information in the determined at least one beam direction. For the reason that the terminal listens to the downlink control information in the specified area, this is a category of the prior art, and therefore, the embodiments of the present invention are not described herein again.
  • the base station may further adjust the at least one beam direction. Specifically, when the base station learns the better beam direction of the terminal through the beam management process, or when a certain beam direction changes in at least one beam direction, the base station may use at least one beam for transmitting downlink control information. The direction is adjusted, and the second downlink control channel configuration information is generated according to the adjusted at least one beam direction. For example, how to generate the second downlink control channel configuration information may be referred to the content of the first downlink control channel configuration information, which is not described herein. Then the method may further comprise:
  • Step S107 The base station sends the second downlink control channel configuration information to the terminal, and the terminal receives the second downlink control channel configuration information.
  • the base station may send the second downlink control channel configuration information to the terminal by using L1 signaling or a MAC CE. Certainly, the base station may further carry the content included in the second downlink control channel configuration information in the downlink control information that is sent to the terminal.
  • the terminal may know that the base station has adjusted the at least one beam direction of the downlink control information, and the terminal acquires the second downlink control channel configuration information.
  • the included QCL information is re-determined to transmit at least one beam direction of the downlink control information, and in the subsequent one or more slot numbers, the downlink control information is monitored and received in the adjusted at least one beam direction.
  • step S107 is added. Although shown in the figure, the implementation of the method to S106 can achieve the beneficial effect of accurately receiving downlink control information in the beam direction.
  • the base station sends the first downlink control channel configuration information to the terminal before transmitting the downlink control information, where the first downlink control channel configuration information is used to indicate the downlink control information sent by the base station to the terminal.
  • the direction of the beam so that after receiving the configuration information of the first downlink control channel, the terminal can monitor and receive the downlink control information in the corresponding beam direction, so that the terminal can accurately and timely obtain the downlink control information sent by the base station. Reduce the latency of data transmission.
  • the power of the terminal can be saved more.
  • an embodiment of the present invention provides a downlink control information transmitting device 50 according to the same inventive concept.
  • the device includes:
  • the first determining unit 501 is configured to determine at least one beam direction for transmitting downlink control information of the terminal, and generate first downlink control channel configuration information according to the determined at least one beam direction; the first downlink control The channel configuration information is used to indicate a beam direction of the downlink control information that is sent by the device to the terminal;
  • the first sending unit 502 is configured to send the downlink control information to the terminal by using the at least one beam direction after the first downlink control channel configuration information is sent to the terminal.
  • the first determining unit 501 is further configured to: determine, by using a beam management process, beam direction information, before determining at least one beam direction for transmitting downlink control information of the terminal;
  • the device transmits a beam direction of the control information to the terminal; or determines the beam direction information in a random access procedure of the terminal.
  • the first determining unit 501 determines at least one beam direction for transmitting the downlink control information of the terminal, where the first determining unit 501 determines, according to the beam direction information, downlink control for transmitting the terminal. At least one beam direction of the information.
  • the first downlink control channel configuration information includes QCL information, where the terminal demodulates the downlink that carries the downlink control information when the reference signal of the beam management process is used as a reference signal. And differentiating information of the reference signal of the control channel and the reference signal of the beam management process of the terminal; or the QCL information is a reference signal of a downlink synchronization process received by the terminal or demodulating the physicality received by the terminal.
  • the terminal demodulates the reference signal of the downlink control channel carrying the downlink control information and the reference signal of the downlink synchronization process or demodulates the physical broadcast The difference information of the demodulation reference signal of the broadcast information carried by the channel.
  • the device further includes an allocating unit 503, configured to: allocate, according to the determined at least one beam direction, each control resource set in the at least one control resource set configured by the base station to the terminal a beam direction, wherein the at least one control resource set is configured to transmit the downlink control information; the beam directions allocated by different control resource sets in the at least one control resource set are the same or different; each of the control resource sets The beam directions allocated by different candidates of the downlink control channel carrying the downlink control information are the same or different.
  • the first determining unit 501 generates the first downlink control channel configuration information according to the determined at least one beam direction, including: the first determining unit 501 is configured according to the allocating unit 503 in the at least one control resource set.
  • the first downlink control channel configuration information is generated as a result of each control resource set assigning a beam direction.
  • the device further includes a configuration unit 504, where the configuration unit 504 is configured to: in the at least one control resource set configured by the base station to the terminal, according to the determined at least one beam direction, by the allocation unit 503. After each control resource set assigns a beam direction, one or more of the QCL information is configured for each of the at least one control resource set.
  • the configuration unit 504 configures one or more pieces of the QCL information for each control resource set in the at least one control resource set, including: the configuration unit 504 is in each of the control resource sets.
  • the downlink control channels of different aggregation levels are configured with different QCL information; or the configuration unit 504 configures different QCL information for different candidates of the downlink control channels of different aggregation levels in each control resource set.
  • the configuration unit 504 configures a plurality of different QCL information for each candidate in each of the control resource sets.
  • the first sending unit 502 sends the first downlink control channel configuration information to the terminal, where the first sending unit 502 sends the foregoing to the terminal by using radio resource control signaling. a downlink control channel configuration information; or the first sending unit 502 sends the first downlink control channel configuration information to the terminal by using message2 or message4 in the random access procedure.
  • the device further includes an adjusting unit 505, where the adjusting unit 505 is configured to: adjust at least one beam direction for transmitting downlink control information of the terminal; the first sending unit 502 is further configured to: Transmitting, to the terminal, second downlink control channel configuration information for instructing the base station to adjust at least one beam direction for transmitting downlink control information of the terminal.
  • the first sending unit 502 sends, to the terminal, second downlink control channel configuration information, which is used to indicate that the base station adjusts at least one beam direction for transmitting downlink control information of the terminal, where The first sending unit 502 sends the second downlink control channel configuration information to the terminal by using L1 signaling or a MAC CE.
  • the apparatus can be used to perform the method provided by the embodiment shown in Figure 1, for example, the device is a base station as previously described. Therefore, for the functions and the like that can be implemented by the functional modules of the device, reference may be made to the description of the embodiment shown in FIG. 1, and details are not described herein. Wherein, since the allocation unit 503, the configuration unit 504, and the adjustment unit 505 are not mandatory functional modules, they are shown by broken lines in FIG.
  • an embodiment of the present invention provides a downlink control information receiving device 60, for example, the device is a terminal as described above.
  • the device includes:
  • the receiving unit 601 is configured to: receive, by the base station, first downlink control channel configuration information, where the first downlink control channel configuration information includes at least one beam that is used by the base station to transmit downlink control information of the terminal.
  • first downlink control channel configuration information includes at least one beam that is used by the base station to transmit downlink control information of the terminal.
  • Directional information includes at least one beam that is used by the base station to transmit downlink control information of the terminal.
  • the second determining unit 602 is configured to: determine the at least one beam direction according to the first downlink control channel configuration information
  • the monitoring unit 603 is configured to: monitor and receive the downlink control information in the at least one beam direction.
  • the second determining unit 602 determines the at least one beam direction according to the first downlink control channel configuration information, where the second determining unit 602 is configured according to the first downlink control channel configuration information. And determining, by the base station, a beam direction allocated to each control resource set in the at least one control resource set, where the at least one control resource set is configured by the base station to be configured by the base station to transmit the downlink control information. a set of control resources; the base station assigns the same or different beam directions to different control resource sets in the at least one control resource set; and each of the control resource sets carries a downlink control channel of the downlink control information
  • the beam directions allocated by different candidates are the same or different.
  • the first downlink control channel configuration information includes QCL information, where the terminal demodulates the downlink that carries the downlink control information when the reference signal of the beam management process is used as a reference signal.
  • QCL information is a reference signal of a downlink synchronization process received by the terminal or demodulated by the terminal
  • the terminal demodulates the reference signal of the downlink control channel carrying the downlink control information and the reference signal of the downlink synchronization process or demodulates the physical Relative parameter information of a demodulation reference signal of broadcast information carried by a broadcast channel.
  • the second determining unit 602 determines, according to the first downlink control channel configuration information, a beam direction allocated by the base station to each control resource set in the at least one control resource set, including: when When the second determining unit 602 determines that the base station configures one of the QCL information for each control resource set in the at least one control resource set, the second determining unit 602 determines the each control according to the QCL information.
  • the second determining unit 602 determines that the base station configures the QCL information for each control resource set in the at least one control resource set, the second determining The unit 602 determines, according to the QCL information, a beam direction corresponding to the downlink control channel of different aggregation levels in each control resource set, or a beam direction corresponding to different candidates of the downlink control channel of different aggregation levels, or Each of the plurality of beam directions corresponding to each candidate in the control resource set.
  • the device further includes a generating unit 604 and a second sending unit 605.
  • the generating unit 604 is configured to: before the receiving unit 601 receives the first downlink control channel configuration information sent by the base station, according to And receiving, by the base station, the signal strength of different beam directions of the base station to generate beam direction information; the second sending unit 605 is configured to: send the beam direction information to the base station, where the beam direction information indicates that the base station is to the The beam direction of the device transmission control information.
  • the receiving unit 601 receives the first downlink control channel configuration information that is sent by the base station, where the receiving unit 601 receives the first downlink included in the radio resource control signaling sent by the base station.
  • the control unit 601 receives the first downlink control channel configuration information included in the message2 or message4 sent by the base station in the random access procedure.
  • the receiving unit 601 is further configured to: receive second downlink control channel configuration information sent by the base station, where the second downlink control channel configuration information is used to indicate downlink control of the base station to transmit the device
  • the information of the at least one beam direction of the information is adjusted
  • the second determining unit 602 is further configured to: determine the adjusted at least one beam direction according to the second downlink control channel configuration information
  • the monitoring unit 603 is further configured to: And monitoring and receiving the downlink control information in the adjusted at least one beam direction.
  • the receiving unit 601 receives the second downlink control channel configuration information that is sent by the base station, where the receiving unit 601 receives the second downlink control channel sent by the base station by using L1 signaling or a MAC CE. Configuration information.
  • the apparatus can be used to perform the method provided by the embodiment shown in Figure 1, for example, the device is a terminal as previously described. Therefore, for the functions and the like that can be implemented by the functional modules of the device, reference may be made to the description of the embodiment shown in FIG. 1, and details are not described herein. Wherein, since the generating unit 604 and the second transmitting unit 605 are not mandatory functional modules, they are shown by broken lines in FIG. 6.
  • an embodiment of the present invention further provides a computer device, where the computer device includes a processor 701, where the processor 701 is configured to perform the downlink control information transmission provided by the embodiment of the present invention when executing the computer program stored in the memory. The steps of the receiving method.
  • the processor 701 may be a central processing unit, an application specific integrated circuit (ASIC), and may be one or more integrated circuits for controlling program execution, and may be used on site.
  • a hardware circuit developed by a Field Programmable Gate Array (FPGA) can be a baseband processor.
  • the processor 701 can include at least one processing core.
  • the computer device further includes a memory 702.
  • the memory 702 may include a read only memory (English: Read Only Memory, ROM for short), a random access memory (English: Random Access Memory, RAM for short), and a disk storage.
  • the memory 702 is used to store data required by the processor 701 to operate.
  • the number of memories 702 is one or more. Among them, the memory 702 is shown together in FIG. 7, but it should be understood that the memory 702 is not a mandatory functional module, and thus is shown by a broken line in FIG.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit or unit is only a logical function division.
  • 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 mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical or otherwise.
  • the functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may also be an independent physical module.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • all or part of the technical solutions of the embodiments of the present invention may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for causing a computer device, for example, A personal computer, server, or network device, or the like, or a processor, performs all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a Universal Serial Bus flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk. Or a variety of media such as optical discs that can store program code.

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Abstract

本发明公开了一种下行控制信息发送与接收方法及设备，用于解决在较高频率情况下，由于终端监听的工作量大造成的电量消耗过大的技术问题。该方法包括：基站确定用于传输终端的下行控制信息的至少一个波束方向，并根据确定的至少一个波束方向生成第一下行控制信道配置信息；所述第一下行控制信道配置信息用于指示所述基站向所述终端发送的所述下行控制信息的波束方向；所述基站向所述终端发送所述第一下行控制信道配置信息后，通过所述至少一个波束方向向所述终端发送所述下行控制信息。

Description

一种下行控制信息发送与接收方法及设备
本申请要求在2017年6月16日提交中国专利局、申请号为201710458595.9、发明名称为“一种下行控制信息发送与接收方法及设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域，特别涉及一种下行控制信息发送与接收方法及设备。
背景技术
目前，在长期演进型(Long Term Evolution，LTE)通信系统中，物理下行控制信道(physical downlink control channel，PDCCH)用于承载下行控制信息(Downlink Control Information，DCI)以及其他控制信息。由于目前的LTE的通信系统所利用的频域资源的频率较低，因此可以采用全向天线来发送下行控制信息，相对应的，终端可以在任意方向上监听并接收下行控制信息。
而在未来的无线通信系统中，例如第五代移动通信技术(5 Generation，5G)，为了提高频域资源的利用率，还会使用频率更高的频段来进行数据传输，例如6GHz以上的频段或者几十GHz的频段，而由于通过高频频段发送数据时高频频段信号的衰减速度更快，为了抵抗更快的衰减速度以保证通信的质量，因此需要通过波束赋形的方式来进行数据传输，由于波束方向之外的信号强度很低，只有在正确的波束方向上才能监听并接收到相应的信息，因此目前终端在任意方向上监听并接收下行控制信息的方式对未来的无线通信系统并不适用。同时，若是终端还是按照现有技术的方式，即终端在任意方向上监听下行控制信息，由于在未来的无线通信系统中，由于频段更高，则终端监听的工作量大于现有技术中的频段较低的情况，所以在进行监听时的电量消耗会增加，从而使得终端的续航能力不佳。
发明内容
本发明实施例提供一种下行控制信息发送与接收方法及设备，用于解决在较高频率情况下，由于终端监听的工作量大造成的电量消耗过大的技术问题。
第一方面，提供一种下行控制信息发送方法，该方法包括：
基站确定用于传输所述终端的下行控制信息的至少一个波束方向，并根据确定的至少一个波束方向生成第一下行控制信道配置信息；所述第一下行控制信道配置信息用于指示所述基站向所述终端发送的所述下行控制信息的波束方向；
所述基站向所述终端发送所述第一下行控制信道配置信息后，通过所述至少一个波束方向向所述终端发送所述下行控制信息。
可选的，在所述基站确定用于传输所述终端的下行控制信息的至少一个波束方向之前，所述方法还包括：所述基站通过波束管理过程确定波束方向信息；所述波束方向信息指示所述基站向所述终端传输控制信息的波束方向；或者，所述基站在所述终端的随机接入过程中确定所述波束方向信息，具体包括基站接收终端发送的preamble序列，所述preamble序列携带终端接收到的SSB相应信息。则所述基站确定用于传输所述终端的下行控制信息的至少一个波束方向，包括：所述基站根据所述波束方向信息确定用于传输所述终端的下行控制信息的至少一个波束方向。
可选的，所述第一下行控制信道配置信息包括QCL信息。其中，所述QCL信息为以所述波束管理过程的参考信号为基准信号时，所述终端解调承载所述下行控制信息的下行控制信道的参考信号与所述终端的波束管理过程的参考信号的差异信息；或者，所述QCL信息为以所述终端接收到的下行同步过程的参考信号或者解调所述终端接收到的物理广播信道承载的广播信息的解调参考信号为基准信号时，所述终端解调承载所述下行控制信息的下行控制信道的参考信号与所述下行同步过程的参考信号或者解调所述物理广播信道承载的广播信息的解调参考信号的差异信息。
可选的，所述基站根据确定的至少一个波束方向生成第一下行控制信道配置信息，包括：
所述基站根据确定的至少一个波束方向，为所述基站给所述终端配置的至少一个控制资源集合中的每个控制资源集合分配波束方向，并根据为所述至少一个控制资源集合中的每个控制资源集合分配波束方向的结果生成所述第一下行控制信道配置信息。其中，所述至少一个控制资源集合用于传输所述下行控制信息；所述至少一个控制资源集合中的不同的控制资源集合分配的波束方向相同或者不同；所述每个控制资源集合中承载所述下行控制信息的下行控制信道的不同candidate分配的波束方向相同或者不同。
可选的，在所述基站根据确定的至少一个波束方向，为所述基站给所述终端配置的至少一个控制资源集合中的每个控制资源集合分配波束方向之后，所述方法还包括：所述基站为所述至少一个控制资源集合中的每个控制资源集合配置一个或者多个所述QCL信息。
可选的，所述基站为所述至少一个控制资源集合中的每个控制资源集合配置多个所述 QCL信息，包括：所述基站为所述每个控制资源集合中的不同聚合等级的所述下行控制信道candidate配置不同的QCL信息；或者，所述基站为所述每个控制资源集合中的不同聚合等级的所述下行控制信道的不同candidate配置不同的QCL信息，或者，所述基站为所述每个控制资源集合中的每个candidate配置不同的QCL信息；或者，所述基站为所述每个控制资源集合中的每个candidate配置多个不同的QCL信息。
可选的，所述基站向所述终端发送所述第一下行控制信道配置信息，包括：所述基站通过无线资源控制信令向所述终端发送所述第一下行控制信道配置信息；或者，所述基站通过所述随机接入过程中的message2或message4向所述终端发送所述第一下行控制信道配置信息。
可选的，在所述基站向所述终端发送所述第一下行控制信道配置信息之后，所述方法还包括：若所述基站对用于传输所述终端的下行控制信息的至少一个波束方向进行调整，则所述基站向所述终端发送用于指示所述基站对传输所述终端的下行控制信息的至少一个波束方向进行调整的第二下行控制信道配置信息。
可选的，所述基站向所述终端发送用于指示所述基站对传输所述终端的下行控制信息的至少一个波束方向进行调整的第二下行控制信道配置信息，包括：所述基站通过L1信令或者MAC CE向所述终端发送所述第二下行控制信道配置信息。
第二方面，提供一种下行控制信息接收方法，该方法包括：终端接收基站发送的第一下行控制信道配置信息；所述第一下行控制信道配置信息包括所述基站确定的用于传输所述终端的下行控制信息的至少一个波束方向的信息；所述终端根据所述第一下行控制信道配置信息确定所述至少一个波束方向；所述终端在所述至少一个波束方向上监听并接收所述下行控制信息。
可选的，所述终端根据所述第一下行控制信道配置信息确定所述至少一个波束方向，包括：所述终端根据所述第一下行控制信道配置信息，确定所述基站为至少一个控制资源集合中的每个控制资源集合分配的波束方向；其中，所述至少一个控制资源集合为所述基站给所述终端配置的用于传输所述下行控制信息的控制资源集合；所述基站为所述至少一个控制资源集合中的不同的控制资源集合分配相同或者不同的波束方向；所述每个控制资源集合中承载所述下行控制信息的下行控制信道的不同candidate分配的波束方向相同或者不同。
可选的，所述第一下行控制信道配置信息包括QCL信息，所述QCL信息为以所述波束管理过程的参考信号为基准信号时，所述终端解调承载所述下行控制信息的下行控制信道的参考信号与所述终端的波束管理过程的参考信号的相对参数信息；或者，所述QCL 信息为以所述终端接收到的下行同步过程的参考信号或者解调所述终端接收到的物理广播信道承载的广播信息的解调参考信号为基准信号时，所述终端解调承载所述下行控制信息的下行控制信道的参考信号与所述下行同步过程的参考信号或者解调所述物理广播信道承载的广播信息的解调参考信号的相对参数信息。
可选的，所述终端根据所述第一下行控制信道配置信息，确定所述基站为至少一个控制资源集合中的每个控制资源集合分配的波束方向，包括：当所述终端确定所述基站为所述至少一个控制资源集合中的每个控制资源集合配置一个所述QCL信息时，所述终端根据所述QCL信息确定所述每个控制资源集合对应的波束方向；或者，当所述终端确定所述基站为所述至少一个控制资源集合中的每个控制资源集合配置多个所述QCL信息时，所述终端根据所述QCL信息确定所述每个控制资源集合中的不同聚合等级的所述下行控制信道对应的波束方向或者不同聚合等级的所述下行控制信道的不同candidate对应的波束方向或者每个控制资源集合中的每个candidate对应的多个波束方向。
可选的，在所述终端接收所述基站发送的第一下行控制信道配置信息之前，所述方法还包括：所述终端根据接收到的所述基站不同波束方向的信号强度生成波束方向信息；所述终端向所述基站发送所述波束方向信息，所述波束方向信息指示所述基站向所述终端传输控制信息的波束方向。
可选的，所述终端向所述基站发送波束方向信息，包括：所述终端在基站的波束管理过程中向所述基站发送所述波束方向信息；或者，所述终端在随机接入过程中向所述基站发送所述波束方向信息。
可选的，所述终端接收所述基站发送的所述第一下行控制信道配置信息，包括：所述终端接收所述基站发送的无线资源控制信令中包含的所述第一下行控制信道配置信息；或者，所述终端接收随机接入过程中所述基站发送的message2或message4中包含的所述第一下行控制信道配置信息。
可选的，所述方法还包括：所述终端接收所述基站发送的第二下行控制信道配置信息，所述第二下行控制信道配置信息用于指示所述基站对传输所述终端的下行控制信息的至少一个波束方向进行调整的信息；所述终端根据所述第二下行控制信道配置信息确定调整后的至少一个波束方向；所述终端在所述调整后的至少一个波束方向上监听并接收所述下行控制信息。
可选的，所述终端接收所述基站发送的第二下行控制信道配置信息，包括：所述终端通过L1信令或者MAC CE接收所述基站发送的所述第二下行控制信道配置信息。
第三方面，提供一种下行控制信息发送设备，该设备包括：第一确定单元，用于确定 用于传输所述终端的下行控制信息的至少一个波束方向，并根据确定的至少一个波束方向生成第一下行控制信道配置信息；所述第一下行控制信道配置信息用于指示所述设备向所述终端发送的所述下行控制信息的波束方向；第一发送单元，用于向所述终端发送所述第一下行控制信道配置信息后，通过所述至少一个波束方向向所述终端发送所述下行控制信息。
可选的，所述第一确定单元还用于：在确定用于传输所述终端的下行控制信息的至少一个波束方向之前，通过波束管理过程确定波束方向信息；所述波束方向信息指示所述设备向所述终端传输控制信息的波束方向；或者，在所述终端的随机接入过程中确定所述波束方向信息。则所述第一确定单元确定用于传输所述终端的下行控制信息的至少一个波束方向，包括：所述第一确定单元根据所述波束方向信息确定用于传输所述终端的下行控制信息的至少一个波束方向。
可选的，所述第一下行控制信道配置信息包括QCL信息，所述QCL信息为以所述波束管理过程的参考信号为基准信号时，所述终端解调承载所述下行控制信息的下行控制信道的参考信号与所述终端的波束管理过程的参考信号的差异信息；或者，所述QCL信息为以所述终端接收到的下行同步过程的参考信号或者解调所述终端接收到的物理广播信道承载的广播信息的解调参考信号为基准信号时，所述终端解调承载所述下行控制信息的下行控制信道的参考信号与所述下行同步过程的参考信号或者解调所述物理广播信道承载的广播信息的解调参考信号的差异信息。
可选的，所述设备还包括分配单元，所述分配单元用于：根据确定的至少一个波束方向，为基站给所述终端配置的至少一个控制资源集合中的每个控制资源集合分配波束方向；其中，所述至少一个控制资源集合用于传输所述下行控制信息；所述至少一个控制资源集合中的不同的控制资源集合分配的波束方向相同或者不同；所述每个控制资源集合中承载所述下行控制信息的下行控制信道的不同candidate分配的波束方向相同或者不同。则所述第一确定单元根据确定的至少一个波束方向生成第一下行控制信道配置信息，包括：所述第一确定单元根据所述分配单元为所述至少一个控制资源集合中的每个控制资源集合分配波束方向的结果生成所述第一下行控制信道配置信息。
可选的，所述设备还包括配置单元；所述配置单元用于：在所述分配单元根据确定的至少一个波束方向，为基站给所述终端配置的至少一个控制资源集合中的每个控制资源集合分配波束方向之后，为所述至少一个控制资源集合中的每个控制资源集合配置一个或者多个所述QCL信息。
可选的，所述配置单元为所述至少一个控制资源集合中的每个控制资源集合配置一个 或者多个所述QCL信息，包括：所述配置单元为所述每个控制资源集合中的不同聚合等级的所述下行控制信道配置不同的QCL信息；或者，所述配置单元为所述每个控制资源集合中的不同聚合等级的所述下行控制信道的不同candidate配置不同的QCL信息；或者，所述配置单元为所述每个控制资源集合中的每个candidate配置多个不同的QCL信息。
可选的，所述第一发送单元向所述终端发送所述第一下行控制信道配置信息，包括：所述第一发送单元通过无线资源控制信令向所述终端发送所述第一下行控制信道配置信息；或者，所述第一发送单元通过所述随机接入过程中的message2或message4向所述终端发送所述第一下行控制信道配置信息。
可选的，所述设备还包括调整单元；所述调整单元用于：对用于传输所述终端的下行控制信息的至少一个波束方向进行调整；所述第一发送单元还用于：向所述终端发送用于指示所述基站对传输所述终端的下行控制信息的至少一个波束方向进行调整的第二下行控制信道配置信息。
可选的，所述第一发送单元向所述终端发送用于指示所述基站对传输所述终端的下行控制信息的至少一个波束方向进行调整的第二下行控制信道配置信息，包括：所述第一发送单元通过L1信令或者MAC CE向所述终端发送所述第二下行控制信道配置信息。
第四方面，提供一种下行控制信息接收设备，该设备包括：接收单元，用于：接收基站发送的第一下行控制信道配置信息；所述第一下行控制信道配置信息包括所述基站确定的用于传输所述终端的下行控制信息的至少一个波束方向的信息；第二确定单元，用于：根据所述第一下行控制信道配置信息确定所述至少一个波束方向；监听单元，用于：在所述至少一个波束方向上监听并接收所述下行控制信息。
可选的，所述第二确定单元根据所述第一下行控制信道配置信息确定所述至少一个波束方向，包括：所述第二确定单元根据所述第一下行控制信道配置信息，确定所述基站为至少一个控制资源集合中的每个控制资源集合分配的波束方向；其中，所述至少一个控制资源集合为所述基站给所述终端配置的用于传输所述下行控制信息的控制资源集合；所述基站为所述至少一个控制资源集合中的不同的控制资源集合分配相同或者不同的波束方向；所述每个控制资源集合中承载所述下行控制信息的下行控制信道的不同candidate分配的波束方向相同或者不同。
可选的，所述第一下行控制信道配置信息包括QCL信息，所述QCL信息为以所述波束管理过程的参考信号为基准信号时，所述终端解调承载所述下行控制信息的下行控制信道的参考信号与所述终端的波束管理过程的参考信号的相对参数信息；或者，所述QCL信息为以所述终端接收到的下行同步过程的参考信号或者解调所述终端接收到的物理广 播信道承载的广播信息的解调参考信号为基准信号时，所述终端解调承载所述下行控制信息的下行控制信道的参考信号与所述下行同步过程的参考信号或者解调所述物理广播信道承载的广播信息的解调参考信号的相对参数信息。
可选的，所述第二确定单元根据所述第一下行控制信道配置信息，确定所述基站为至少一个控制资源集合中的每个控制资源集合分配的波束方向，包括：
当所述第二确定单元确定所述基站为所述至少一个控制资源集合中的每个控制资源集合配置一个所述QCL信息时，所述第二确定单元根据所述QCL信息确定所述每个控制资源集合对应的波束方向；或者，当所述第二确定单元确定所述基站为所述至少一个控制资源集合中的每个控制资源集合配置多个所述QCL信息时，所述第二确定单元根据所述QCL信息确定所述每个控制资源集合中的不同聚合等级的所述下行控制信道对应的波束方向，或者不同聚合等级的所述下行控制信道的不同candidate对应的波束方向，或者所述每个控制资源集合中的每个candidate对应的多个波束方向。
可选的，所述设备还包括生成单元和第二发送单元；所述生成单元用于：在所述接收单元接收所述基站发送的第一下行控制信道配置信息之前，根据接收到的所述基站不同波束方向的信号强度生成波束方向信息；所述第二发送单元用于：向所述基站发送所述波束方向信息，所述波束方向信息指示所述基站向所述设备传输控制信息的波束方向。
可选的，所述接收单元接收所述基站发送的第一下行控制信道配置信息，包括：所述接收单元接收所述基站发送的无线资源控制信令中包含的所述第一下行控制信道配置信息；或者，所述接收单元接收随机接入过程中所述基站发送的message2或message4中包含的所述第一下行控制信道配置信息。
可选的，所述接收单元还用于：接收所述基站发送的第二下行控制信道配置信息，所述第二下行控制信道配置信息用于指示所述基站对传输所述设备的下行控制信息的至少一个波束方向进行调整的信息；所述第二确定单元还用于：根据所述第二下行控制信道配置信息确定调整后的至少一个波束方向；所述监听单元还用于：在所述调整后的至少一个波束方向上监听并接收所述下行控制信息。
可选的，所述接收单元接收所述基站发送的第二下行控制信道配置信息，包括：所述接收单元通过L1信令或者MAC CE接收所述基站发送的所述第二下行控制信道配置信息。
第五方面，提供一种计算机装置，所述装置包括处理器，所述处理器用于执行存储器中存储的计算机程序时实现如第一方面提供下行控制信息发送方法和第二方面提供的下行控制信息接收方法任一项所述方法的步骤。
第六方面，提供一种计算机可读存储介质，其上存储有计算机程序，所述计算机程序 被处理器执行时实现如第一方面提供下行控制信息发送方法和第二方面提供的下行控制信息接收方法任一项所述方法的步骤。
在本发明实施例中，基站在发送下行控制信息之前，还会先向终端发送第一下行控制信道配置信息，其中，第一下行控制信道配置信息用于指示基站向终端发送的下行控制信息的波束方向，终端接收到该第一下行控制信道配置信息之后，则可以在相应的波束方向上监听并接收下行控制信息，以使得终端可以准确及时的获取基站发送的下行控制信息，以减少数据传输的时延。这样，终端则不用在任意方向上进行监听，而只在相应的波束方向上监听，则可以更加节省终端的电量。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对本发明实施例中所需要使用的附图作简单地介绍，显而易见地，下面所介绍的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的下行控制信息发送与接收方法的流程示意图；
图2为本发明实施例提供的基站为每个控制资源集合分配一个波束方向的示意图；
图3为本发明实施例提供的基站为每个控制资源集合中不同聚合等级的下行控制信道分配不同波束方向的示意图；
图4为本发明实施例提供的基站为每个控制资源集合中不同聚合等级的下行控制信道的不同candidate分配不同波束方向的示意图；
图5为本发明实施例提供的下行控制信息发送设备的一种结构示意图；
图6为本发明实施例提供的下行控制信息接收设备的一种结构示意图；
图7为本发明实施例提供的计算机装置的一种结构示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述。
以下，对本发明实施例中的部分用语进行解释说明，以便于本领域技术人员理解。
(1)基站，是指接入网中在空中接口上通过一个或多个小区与无线终端设备通信的设备。基站可用于将收到的空中帧与网络协议(Internet Protocol，IP)分组进行相互转换，作为用户设备与接入网的其余部分之间的路由器，其中接入网的其余部分可包括IP网络。 基站还可协调对空中接口的属性管理。例如，基站可以包括长期演进(Long Term Evolution，LTE)系统或演进的LTE系统(LTE-Advanced，LTE-A)中的演进型基站(eNB或e-NodeB，evolutional Node B)，或者也可以包括5G系统中的下一代节点B(next generation node B，gNB)，本发明实施例并不限定。
(2)终端，是指向用户提供语音和/或数据连通性的设备，例如可以包括具有无线连接功能的手持式设备、或连接到无线调制解调器的处理设备。该用户设备可以经无线接入网(Radio Access Network，RAN)与核心网进行通信，与RAN交换语音和/或数据。该终端可以包括UE、无线终端设备、移动终端设备、订户单元(Subscriber Unit)、订户站(Subscriber Station)，移动站(Mobile Station)、移动台(Mobile)、远程站(Remote Station)、接入点(Access Point，AP)、远程终端设备(Remote Terminal)、接入终端设备(Access Terminal)、用户终端设备(User Terminal)、用户代理(User Agent)、或用户装备(User Device)等。例如，可以包括移动电话(或称为“蜂窝”电话)，具有移动终端设备的计算机，便携式、袖珍式、手持式、计算机内置的或者车载的移动装置。例如，个人通信业务(Personal Communication Service，PCS)电话、无绳电话、会话发起协议(SIP)话机、无线本地环路(Wireless Local Loop，WLL)站、个人数字助理(Personal Digital Assistant，PDA)、智能穿戴式设备等设备。
下面介绍本发明实施例的技术背景。
目前，LTE通信系统中每个下行子帧都包括控制区域和数据区域，控制区域用于承载控制信息，数据区域用于承载数据。例如，PDCCH位于控制区域。而每个下行子帧的控制区域可以包括多个PDCCH，一个PDCCH占用一个控制信道单元(control channel element，CCE)。基站可选择使用1、2、4或8个CCE承载一条下行控制信息，其中，1、2、4或8为PDCCH的聚合等级(Aggregation Level，AL)，每个聚合等级对应该聚合等级的PDCCH侯选项目(candidate)，基站可以根据传输的信息量及信道条件配置相应的聚合等级。由于终端不知道承载下行控制信息的PDCCH的大小和格式等信息，但终端会知道自己所期待的信息，则终端则会在控制区域中下行控制信息进行尝试解码，以找到基站发送给自己的下行控制信息包括的CCE聚合等级和CCE起始位置，进而确定基站发送给该终端的下行控制信息，以接收该下行控制信息，这个过程称为PDCCH盲检。
其中，上述的PDCCH盲检是基于目前的终端在任意方向上监听并接收下行控制信息的基础上进行的。而在未来的无线通信系统中，例如第五代移动通信技术(5 Generation，5G)，为了提高频域资源的利用率，还会使用频率更高的频段来进行数据传输，例如6GHz以上的频段或者几十GHz的频段，而由于通过高频频段发送数据时高频频段信号的衰减速 度更快，为了抵抗更快的衰减速度以保证通信的质量，因此需要通过波束的方式来进行数据传输，由于波束方向之外的信号强度很低，只有在正确的波束方向上才能监听并接收到相应的信息，因此目前终端在任意方向上监听并接收下行控制信息的方式对未来的无线通信系统并不适用。
鉴于此，本发明实施例提供一种下行控制信息发送方法，在该方法中，基站在发送下行控制信息之前，还会先向终端发送第一下行控制信道配置信息，其中，第一下行控制信道配置信息用于指示基站向终端发送的下行控制信息的波束方向，终端接收到该第一下行控制信道配置信息之后，则可以在相应的波束方向上监听并接收下行控制信息，以使得终端可以准确及时的获取基站发送的下行控制信息，以减小数据传输的时延。这样，终端则不用在任意方向上进行监听，而只在相应的波束方向上监听，则可以更加节省终端的电量。
请参见图1，本发明一实施例提供一种下行控制信息发送方法，该方法的流程描述如下。在下面的流程中，也涉及到下行控制信息接收方法的流程。
步骤S101：终端向基站发送波束方向信息，基站接收波束方向信息。
在本发明实施例中，当基站需要向终端发送下行控制信息时，基站首先需要确定通过哪个波束方向来发送下行控制信息。其中，基站要想知道通过哪个波束方向来发送下行控制信息，则首先需要知道终端在基站覆盖范围内的大致位置。基站确定终端的大致位置包括但不限于如下几种方法：
(1)基站可以在与终端的波束管理(beam management)过程中确定终端的大致位置。具体的，基站可以通过不同的波束方向向终端发送测试信息，当终端接收到不同波束方向的测试信息之后，则可以确定接收到的不同波束方向的信号强度，进而根据信号强度生成一波束方向信息，并将该波束方向信息发送给基站，该波束方向信息则是用于指示基站可以通过哪些波束方向来向终端发送下行控制信息，例如通过波束方向信息中信号强度最强的或者信号强度大于一定阈值的。相对应的，基站则可以接收该波束方向信息，基站则可以根据接收的到的波束方向信息确定终端的大致位置。
(2)基站可以在终端的下行同步过程或者随机接入过程中确定终端的大致位置。具体的，在终端与基站进行下行同步的过程中或者随机接入过程中，终端可以直接向基站发送波束方向信息。相对应的，基站则可以接收该波束方向信息，并根据接收的到的波束方向信息确定终端的大致位置。
在本发明实施例中，为了将流程按照顺序更为清楚的进行说明，将步骤S101也一并呈现在图1中，但需要知道的是，步骤S101并不是必须执行的步骤。例如，除了上述两种方法之外，基站也可以根据终端的移动轨迹或者移动速度来判断终端的大致位置，当然， 也可以通过其他的可能的方式来判断终端的大致位置，本发明实施例对此不做限制。
步骤S102：基站确定用于传输终端的下行控制信息的至少一个波束方向。
本发明实施例中，基站可以根据接收到的波束方向信息确定终端的大致位置，进而确定向终端发送下行控制信息的至少一个波束方向。当然，基站也可以是将波束方向信息中指示的信号强度较高的波束方向确定为向终端发送下行控制信息的至少一个波束方向。其中，基站可以根据要发送的下行控制信息的格式等信息确定波束方向的数量。当然，基站也可以根据其他可能的信息确定波束方向的数量，本发明实施例对此不做限制。
步骤S103：基站根据确定的至少一个波束方向生成第一下行控制信道配置信息。
本发明实施例中，在基站确定用于传输所述终端的下行控制信息的至少一个波束方向之后，则可以根据至少一个波束方向生成第一下行控制信道配置信息。其中，第一下行控制信道配置信息可以包括QCL(Quasi-co-location，准协同定位)信息。QCL信息为以波束管理过程的参考信号为基准信号时，终端解调承载下行控制信息的下行控制信道的参考信号与终端的波束管理过程的参考信号的差异信息；或者，QCL信息为以终端接收到的下行同步过程的参考信号或者解调终端接收到的物理广播信道承载的广播信息的解调参考信号为基准信号时，终端解调承载下行控制信息的下行控制信道的参考信号与下行同步过程的参考信号或者解调物理广播信道承载的广播信息的解调参考信号的差异信息。当然，第一下行控制信道配置信息还可以包括其他参数信息，本发明实施例对此不做限制。
具体的，基站可以根据确定的至少一个波束方向，为基站给终端配置的至少一个控制资源集合中的每个控制资源集合(CORESET，control resource set)分配波束方向。其中，控制资源集合是用于传输所述下行控制信息的资源的集合。基站可以给每个控制资源集合分配不同或者相同的波束方向，并且，基站也可以为不同的控制资源集合分配通过不同或者相同的波束方向。
具体的，当基站只为每个控制资源集合分配一个波束方向时，则基站会为每个控制资源集合配置的一个与该波束方向相关的QCL信息。
图2是基站为每个控制资源集合分配一个波束方向的示意图。其中，基站为终端配置了两个控制资源集合，即控制资源集合1和控制资源集合2，那么基站则可以为控制资源集合1和控制资源集合2分别分配一个波束方向，即为控制资源集合1分配波束方向1，以及为控制资源集合2分配波束方向2。相对应的，在基站确定分配的波束方向之后，基站则会为这两个控制资源集合配置与分配的波束方向相关的QCL信息。例如，基站为控制资源集合1配置与波束方向1相关的QCL1信息，以及为控制资源集合2配置与波束方向1相关的QCL2信息。其中，波束方向1和波束方向2可以是相同的波束方向，也可以 是不同的波束方向。相对应的，当波束方向1和波束方向2为相同的波束方向时，则基站为这两个控制资源集合配置相同的QCL信息，即QCL1信息和QCL2信息相同；当波束方向1和波束方向2为不同的波束方向时，则基站为这两个控制资源集合配置不同的QCL信息，即QCL1信息和QCL2信息不同。
具体的，当基站为每个控制资源集合分配多个波束方向时，即基站为每个控制资源集合配置的QCL信息有多个时，包括但不限于以下两种情况：
(1)基站可以为该控制资源集合内的不同聚合等级的下行控制信道分配不同的波束方向，则基站会为不同聚合等级的下行控制信道配置不同的QCL信息。
图3是基站为每个控制资源集合中不同聚合等级的下行控制信道分配不同波束方向的示意图。其中，基站为终端配置了一个控制资源集合3，这个控制资源集合3中包括两个聚合等级的下行控制信道，即聚合等级1和聚合等级2，则基站可以为聚合等级1的下行控制信道分配波束方向3，以及为聚合等级2的下行控制信道分配波束方向4。相对应的，在波束方向分配完成后，基站则会为聚合等级1的下行控制信道配置与波束方向3相关的QCL3信息，以及为聚合等级2的下行控制信道配置与波束方向4相关的QCL4信息。
(2)基站可以为该控制资源集合内的不同聚合等级的下行控制信道的不同候选项目(candidate)分配不同的波束方向，则基站会为不同聚合等级的下行控制信道的不同candidate配置不同的QCL信息。
图4是基站为每个控制资源集合中不同聚合等级的下行控制信道的不同candidate分配不同波束方向的示意图。其中，基站为终端配置了一个控制资源集合4，这个控制资源集合4中包括两个聚合等级的下行控制信道，即聚合等级1和聚合等级2，而每个聚合等级下可以包括多个candidate，例如，聚合等级1包括N个candidate，及聚合等级2包括M个candidate。则基站可以为聚合等级1的N/2个candidate分配波束方向5-1，并为其余N/2个candidate分配波束方向6-1；以及基站可以为聚合等级2的M/2个candidate分配波束方向5-2，并为其余M/2个candidate分配波束方向6-2。相对应的，在波束方向分配完成后，基站还会为聚合等级1的N/2个candidate配置与波束方向5-1相关的QCL5信息，并且为其余N/2个candidate配置与波束方向6-1相关的QCL6信息；以及为聚合等级2的M/2个candidate配置与波束方向5-2相关的QCL5信息，并且为其余M2个candidate配置与波束方向6-2相关的QCL6信息。需要声明的是，这里的波束方向5-1与波束方向5-2可以是相同的波束方向，则与波束方向5-1相关的QCL信息与波束方向5-2相关的QCL信息是相同的，上述则以此为例；当然，波束方向5-1与波束方向5-2也可以是不同的波束方向，则相对应的与波束方向5-1相关的QCL信息与波束方向5-2相关的QCL信息则是不同的。 同理，波束方向6-1与波束方向6-2与其类似，在此不再赘述。
其中，基站还可以为每个candidate分配多个波束方向，则相对应的，基站则会为该candidate配置多个与这多个波束方向分别对应的QCL信息。
本发明实施例中，为了使得终端知道多个QCL信息与不同控制资源集合的对应关系，或者多个QCL信息与不同聚合等级的下行控制信道的对应关系，或者多个QCL信息与不同candidate的对应关系，基站可以在向终端发送的第一下行控制信道配置信息中可以包括用于指示上述对应关系的信息。该第一下行控制信道配置信息可以是基站通过RRC信令或者随机过程中的message2或者message4发送给终端，或者，该指示消息也可以是基站通过层1(Layer 1，L1)信令或者媒体接入控制单元(Medium Access Control Control Element，MAC CE)发送给终端；当然，基站还可以通过向终端发送额外的指示消息来通知终端上述的对应关系，本发明实施例对此不做限制。或者，基站和终端还可以预先约定上述对应关系中的其中一种，则基站发送给终端的第一下行控制信道配置信息中则可以不包括用于指示上述对应关系的信息，并且基站也无需额外发送指示消息给终端，终端能够通过预先约定的方式确定多个QCL信息与不同控制资源集合的对应关系，或者多个QCL信息与不同聚合等级的下行控制信道的对应关系，或者多个QCL信息与不同candidate的对应关系。
步骤S104：基站发送第一下行控制信道配置信息，终端接收第一下行控制信道配置信息。
本发明实施例中，在基站生成第一下行控制信道配置信息之后，则可以将第一下行控制信道配置信息发送给终端。具体的，基站可以通过无线资源控制(Radio Resource Control，RRC)信令(signaling)将第一下行控制信道配置信息发送给终端；或者，基站还可以通过终端的随机接入过程中的第2条消息(message2)或者第4条消息(message4)将第一下行控制信道配置信息发送给终端。当然，基站还可以通过其他可能的方式将第一下行控制信道配置信息发送给终端，本发明实施例对此不做限制。
相应的，终端则可以接收基站发送的第一下行控制信道配置信息。
步骤S105：终端根据第一下行控制信道配置信息确定至少一个波束方向。
本发明实施例中，终端接收到基站发送的第一下行控制信道配置信息之后，终端则可以获取第一下行控制信道配置信息中包括的QCL信息，根据该QCL信息终端则可以确定基站用于传输下行控制信息的波束方向。
本发明实施例中，若终端确定基站为每个控制资源集合分配一个波束方向，也就是说基站为每个控制资源集合配置一个QCL信息时，那么终端接收到的与该控制资源集合相对应的QCL信息也只有一个，并且终端根据这个QCL信息确定与该QCL信息对应的波 束方向。
本发明实施例中，若终端确定基站为每个控制资源集合分配多个波束方向时，也就是说基站为每个控制资源集合配置多个QCL信息时，例如图3和图4示例的配置方式。那么终端接收到的与该控制资源集合相对应的QCL信息则会有多个，则终端可以根据这多个QCL信息分别确定与这多个QCL信息中每一个QCL信息相对应的波束方向。其中，当基站为每个控制资源集合中不同聚合等级的下行控制信道的不同candidate分配不同波束方向时，终端还会进一步确定与不同的candidate对应的波束方向。
具体的，若基站发送的第一下行控制信道配置信息中包括多个QCL信息与不同控制资源集合的对应关系，或者多个QCL信息与不同聚合等级的下行控制信道的对应关系，或者多个QCL信息与不同candidate的对应关系的信息时，则终端在接收第一下行控制信道配置信息后，则可以根据QCL信息，以及第一下行控制信道配置信息中包括的上述对应关系的信息，确定基站为该终端的每个控制资源集合配置的QCL信息，或者基站为不同聚合等级的下行控制信道配置的QCL信息，或者基站为每个candidate配置的QCL信息。由于QCL信息是与波束方向相关的，那么，当终端确定对应关系之后，终端也就可以确定每个控制资源集合对应的波束方向，或者不同聚合等级的下行控制信道对应的波束方向，或者为每个candidate对应的波束方向。其中，每个candidate对应的波束方向可以是一个或者多个。
具体的，终端还可以按照与基站预先约定的上述对应关系中的其中一种，确定相对应的波束方向，那么则会包括但不限于以下几种情况：
(1)当终端与基站预先约定的对应关系为，基站为该资源集合内的不同聚合等级的下行控制信道配置不同的QCL信息，则终端接收到第一下行控制信道配置信息并获取其中包括的多个QCL信息之后，则可以直接根据这多个QCL信息确定与这多个QCL信息对应的波束方向，并且确定不同聚合等级的下行控制信道对应的波束方向。例如图3示例的情况，则终端可以根据QCL3信息知道控制资源集合3包括的聚合等级1的下行控制信道的波束方向为波束方向3，以及根据QCL4信息知道控制资源集合3包括的聚合等级2的下行控制信道的波束方向为波束方向4。
(2)当终端与基站预先约定的对应关系为，基站为该资源集合内的不同聚合等级的下行控制信道的不同candidate配置不同的QCL信息，则终端接收到第一下行控制信道配置信息并获取其中包括的多个QCL信息之后，则可以直接根据这多个QCL信息确定与这多个QCL信息对应的波束方向，并且确定不同candidate对应的波束方向。例如图4示例的情况，则终端可以根据QCL5信息知道控制资源集合4包括的聚合等级1的N/2个 candidate的波束方向为波束方向5-1，以及聚合等级2的M/2个candidate的波束方向为波束方向5-2；以及终端可以根据QCL6信息知道控制资源集合4包括的聚合等级2的其余N/2个candidate的波束方向为波束方向6-1，以及聚合等级2的其余M/2个candidate的波束方向为波束方向6-2。
(3)当终端与基站预先约定的对应关系为，当基站为控制资源集合中的每个candidate配置多个QCL信息时，则终端可以根据这多个QCL信息确定与该candidate的多个QCL信息相对应的波束方向。
步骤S106：基站发送下行控制信息，终端监听并接收下行控制信息。
本发明实施例中，在基站确定用于传输该下行控制信息的波束方向之后，则可以通过该波束方向将下行控制信息发送给终端。
本发明实施例中，终端可以在确定的至少一个波束方向监听下行控制信息。其中，对于终端如何在指定区域监听下行控制信息，这属于现有技术的范畴，因此本发明实施例在此不再赘述。
本发明实施例中，在基站通过上述确定的至少一个波束方向发送下行控制信息之后，基站还可以对至少一个波束方向进行调整。具体的，当基站通过波束管理过程获知终端的更优的波束方向，或者当至少一个波束方向中某个波束方向发生变化不能继续使用时，基站则会对用于传输下行控制信息的至少一个波束方向进行调整，并根据调整后的至少一个波束方向生成第二下行控制信道配置信息。其中，如何生成第二下行控制信道配置信息可参考前面所述的生成第一下行控制信道配置信息的内容，在此不再赘述。则该方法还可以进一步包括：
步骤S107：基站向终端发送第二下行控制信道配置信息，终端接收第二下行控制信道配置信息。
基站可以通过L1信令或者MAC CE将第二下行控制信道配置信息发送给终端。当然，基站还可以在发送给终端的下行控制信息中携带第二下行控制信道配置信息包括的内容。
本发明实施例中，当终端接收到第二下行控制信道配置信息之后，终端则可以知道基站已经对传输下行控制信息的至少一个波束方向进行调整，则终端会获取第二下行控制信道配置信息中包括的QCL信息，并重新确定传输下行控制信息的至少一个波束方向，并在后续的一个或者多个时隙序号(slot)内，在调整后的至少一个波束方向上监听并接收下行控制信息。
在本发明实施例中，为了实现进一步的有益效果，增加步骤S107，虽然图中一并示出，但是执行到S106就可以实现本申请的有益效果，即在波束方向上准确接收下行控制信息。
综上所述，基站在发送下行控制信息之前，还会先向终端发送第一下行控制信道配置信息，其中，第一下行控制信道配置信息用于指示基站向终端发送的下行控制信息的波束方向，这样，终端接收到该第一下行控制信道配置信息之后，则可以在相应的波束方向上监听并接收下行控制信息，以使得终端可以准确及时的获取基站发送的下行控制信息，以减小数据传输的时延。同时，由于终端不用再全方向进行扫描监听，则可以更加节省终端的电量。
下面结合附图介绍本发明实施例提供的设备。
请参见图5，基于同一发明构思，本发明一实施例提供一种下行控制信息发送设备50。该设备包括：
第一确定单元501，用于确定用于传输所述终端的下行控制信息的至少一个波束方向，并根据确定的至少一个波束方向生成第一下行控制信道配置信息；所述第一下行控制信道配置信息用于指示所述设备向所述终端发送的所述下行控制信息的波束方向；
第一发送单元502，用于向所述终端发送所述第一下行控制信道配置信息后，通过所述至少一个波束方向向所述终端发送所述下行控制信息。
可选的，所述第一确定单元501还用于：在确定用于传输所述终端的下行控制信息的至少一个波束方向之前，通过波束管理过程确定波束方向信息；所述波束方向信息指示所述设备向所述终端传输控制信息的波束方向；或者，在所述终端的随机接入过程中确定所述波束方向信息。则所述第一确定单元501确定用于传输所述终端的下行控制信息的至少一个波束方向，包括：所述第一确定单元501根据所述波束方向信息确定用于传输所述终端的下行控制信息的至少一个波束方向。
可选的，所述第一下行控制信道配置信息包括QCL信息，所述QCL信息为以所述波束管理过程的参考信号为基准信号时，所述终端解调承载所述下行控制信息的下行控制信道的参考信号与所述终端的波束管理过程的参考信号的差异信息；或者，所述QCL信息为以所述终端接收到的下行同步过程的参考信号或者解调所述终端接收到的物理广播信道承载的广播信息的解调参考信号为基准信号时，所述终端解调承载所述下行控制信息的下行控制信道的参考信号与所述下行同步过程的参考信号或者解调所述物理广播信道承载的广播信息的解调参考信号的差异信息。
可选的，所述设备还包括分配单元503，所述分配单元503用于：根据确定的至少一个波束方向，为基站给所述终端配置的至少一个控制资源集合中的每个控制资源集合分配波束方向；其中，所述至少一个控制资源集合用于传输所述下行控制信息；所述至少一个控制资源集合中的不同的控制资源集合分配的波束方向相同或者不同；所述每个控制资源 集合中承载所述下行控制信息的下行控制信道的不同candidate分配的波束方向相同或者不同。则所述第一确定单元501根据确定的至少一个波束方向生成第一下行控制信道配置信息，包括：所述第一确定单元501根据所述分配单元503为所述至少一个控制资源集合中的每个控制资源集合分配波束方向的结果生成所述第一下行控制信道配置信息。
可选的，所述设备还包括配置单元504；所述配置单元504用于：在所述分配单元503根据确定的至少一个波束方向，为基站给所述终端配置的至少一个控制资源集合中的每个控制资源集合分配波束方向之后，为所述至少一个控制资源集合中的每个控制资源集合配置一个或者多个所述QCL信息。
可选的，所述配置单元504为所述至少一个控制资源集合中的每个控制资源集合配置一个或者多个所述QCL信息，包括：所述配置单元504为所述每个控制资源集合中的不同聚合等级的所述下行控制信道配置不同的QCL信息；或者，所述配置单元504为所述每个控制资源集合中的不同聚合等级的所述下行控制信道的不同candidate配置不同的QCL信息；或者，所述配置单元504为所述每个控制资源集合中的每个candidate配置多个不同的QCL信息。
可选的，所述第一发送单元502向所述终端发送所述第一下行控制信道配置信息，包括：所述第一发送单元502通过无线资源控制信令向所述终端发送所述第一下行控制信道配置信息；或者，所述第一发送单元502通过所述随机接入过程中的message2或message4向所述终端发送所述第一下行控制信道配置信息。
可选的，所述设备还包括调整单元505；所述调整单元505用于：对用于传输所述终端的下行控制信息的至少一个波束方向进行调整；所述第一发送单元502还用于：向所述终端发送用于指示所述基站对传输所述终端的下行控制信息的至少一个波束方向进行调整的第二下行控制信道配置信息。
可选的，所述第一发送单元502向所述终端发送用于指示所述基站对传输所述终端的下行控制信息的至少一个波束方向进行调整的第二下行控制信道配置信息，包括：所述第一发送单元502通过L1信令或者MAC CE向所述终端发送所述第二下行控制信道配置信息。
该设备可以用于执行图1所示的实施例所提供的方法，例如该设备为前所述的基站。因此，对于该设备的各功能模块所能够实现的功能等可参考图1所示的实施例的描述，不多赘述。其中，由于分配单元503、配置单元504和调整单元505不是必选的功能模块，因此在图5中以虚线示出。
请参见图6，基于同一发明构思，本发明一实施例提供一种下行控制信息接收设备60， 例如该设备为前所述的终端。该设备包括：
接收单元601，用于：接收基站发送的第一下行控制信道配置信息；所述第一下行控制信道配置信息包括所述基站确定的用于传输所述终端的下行控制信息的至少一个波束方向的信息；
第二确定单元602，用于：根据所述第一下行控制信道配置信息确定所述至少一个波束方向；
监听单元603，用于：在所述至少一个波束方向上监听并接收所述下行控制信息。
可选的，所述第二确定单元602根据所述第一下行控制信道配置信息确定所述至少一个波束方向，包括：所述第二确定单元602根据所述第一下行控制信道配置信息，确定所述基站为至少一个控制资源集合中的每个控制资源集合分配的波束方向；其中，所述至少一个控制资源集合为所述基站给所述终端配置的用于传输所述下行控制信息的控制资源集合；所述基站为所述至少一个控制资源集合中的不同的控制资源集合分配相同或者不同的波束方向；所述每个控制资源集合中承载所述下行控制信息的下行控制信道的不同candidate分配的波束方向相同或者不同。
可选的，所述第一下行控制信道配置信息包括QCL信息，所述QCL信息为以所述波束管理过程的参考信号为基准信号时，所述终端解调承载所述下行控制信息的下行控制信道的参考信号与所述终端的波束管理过程的参考信号的相对参数信息；或者，所述QCL信息为以所述终端接收到的下行同步过程的参考信号或者解调所述终端接收到的物理广播信道承载的广播信息的解调参考信号为基准信号时，所述终端解调承载所述下行控制信息的下行控制信道的参考信号与所述下行同步过程的参考信号或者解调所述物理广播信道承载的广播信息的解调参考信号的相对参数信息。
可选的，所述第二确定单元602根据所述第一下行控制信道配置信息，确定所述基站为至少一个控制资源集合中的每个控制资源集合分配的波束方向，包括：当所述第二确定单元602确定所述基站为所述至少一个控制资源集合中的每个控制资源集合配置一个所述QCL信息时，所述第二确定单元602根据所述QCL信息确定所述每个控制资源集合对应的波束方向；或者，当所述第二确定单元602确定所述基站为所述至少一个控制资源集合中的每个控制资源集合配置多个所述QCL信息时，所述第二确定单元602根据所述QCL信息确定所述每个控制资源集合中的不同聚合等级的所述下行控制信道对应的波束方向，或者不同聚合等级的所述下行控制信道的不同candidate对应的波束方向，或者所述每个控制资源集合中的每个candidate对应的多个波束方向。
可选的，所述设备还包括生成单元604和第二发送单元605；所述生成单元604用于： 在所述接收单元601接收所述基站发送的第一下行控制信道配置信息之前，根据接收到的所述基站不同波束方向的信号强度生成波束方向信息；所述第二发送单元605用于：向所述基站发送所述波束方向信息，所述波束方向信息指示所述基站向所述设备传输控制信息的波束方向。
可选的，所述接收单元601接收所述基站发送的第一下行控制信道配置信息，包括：所述接收单元601接收所述基站发送的无线资源控制信令中包含的所述第一下行控制信道配置信息；或者，所述接收单元601接收随机接入过程中所述基站发送的message2或message4中包含的所述第一下行控制信道配置信息。
可选的，所述接收单元601还用于：接收所述基站发送的第二下行控制信道配置信息，所述第二下行控制信道配置信息用于指示所述基站对传输所述设备的下行控制信息的至少一个波束方向进行调整的信息；所述第二确定单元602还用于：根据所述第二下行控制信道配置信息确定调整后的至少一个波束方向；所述监听单元603还用于：在所述调整后的至少一个波束方向上监听并接收所述下行控制信息。
可选的，所述接收单元601接收所述基站发送的第二下行控制信道配置信息，包括：所述接收单元601通过L1信令或者MAC CE接收所述基站发送的所述第二下行控制信道配置信息。
该设备可以用于执行图1所示的实施例所提供的方法，例如该设备为前所述的终端。因此，对于该设备的各功能模块所能够实现的功能等可参考图1所示的实施例的描述，不多赘述。其中，由于生成单元604和第二发送单元605不是必选的功能模块，因此在图6中以虚线示出。
请参见图7，本发明一实施例还提供一种计算机装置，该计算机装置包括处理器701，处理器701用于执行存储器中存储的计算机程序时实现本发明实施例提供的下行控制信息发送和接收方法的步骤。
可选的，处理器701具体可以是中央处理器、特定应用集成电路(英文：Application Specific Integrated Circuit，简称：ASIC)，可以是一个或多个用于控制程序执行的集成电路，可以是使用现场可编程门阵列(英文：Field Programmable Gate Array，简称：FPGA)开发的硬件电路，可以是基带处理器。
可选的，处理器701可以包括至少一个处理核心。
可选的，该计算机装置还包括存储器702，存储器702可以包括只读存储器(英文：Read Only Memory，简称：ROM)、随机存取存储器(英文：Random Access Memory，简称：RAM)和磁盘存储器。存储器702用于存储处理器701运行时所需的数据。存储器 702的数量为一个或多个。其中，存储器702在图7中一并示出，但需要知道的是存储器702不是必选的功能模块，因此在图7中以虚线示出。
在本发明实施例中，应该理解到，所揭露的设备和方法，可以通过其它的方式实现。例如，以上所描述的设备实施例仅仅是示意性的，例如，所述单元或单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，设备或单元的间接耦合或通信连接，可以是电性或其它的形式。
在本发明实施例中的各功能单元可以集成在一个处理单元中，或者各个单元也可以均是独立的物理模块。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明实施例的技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备，例如可以是个人计算机，服务器，或者网络设备等，或处理器(processor)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：通用串行总线闪存盘(Universal Serial Bus flash drive)、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，以上实施例仅用以对本申请的技术方案进行了详细介绍，但以上实施例的说明只是用于帮助理解本发明实施例的方法，不应理解为对本发明实施例的限制。本技术领域的技术人员可轻易想到的变化或替换，都应涵盖在本发明实施例的保护范围之内。

Claims (37)

  1. 一种下行控制信息发送方法，其特征在于，包括：
    基站确定用于传输终端的下行控制信息的至少一个波束方向，并根据确定的至少一个波束方向生成第一下行控制信道配置信息；所述第一下行控制信道配置信息用于指示所述基站向所述终端发送的所述下行控制信息的波束方向；
    所述基站向所述终端发送所述第一下行控制信道配置信息后，通过所述至少一个波束方向向所述终端发送所述下行控制信息。
  2. 如权利要求1所述的方法，其特征在于：
    在所述基站确定用于传输所述终端的下行控制信息的至少一个波束方向之前，所述方法还包括：
    所述基站通过波束管理过程确定波束方向信息，所述波束方向信息指示所述基站向所述终端传输控制信息的波束方向；或者，
    所述基站在所述终端的随机接入过程中确定所述波束方向信息；
    则所述基站确定用于传输所述终端的下行控制信息的至少一个波束方向，包括：
    所述基站根据所述波束方向信息确定用于传输所述终端的下行控制信息的至少一个波束方向。
  3. 如权利要求1所述的方法，其特征在于，所述第一下行控制信道配置信息包括准协同定位QCL信息；
    其中，所述QCL信息为以所述波束管理过程的参考信号为基准信号时，所述终端解调承载所述下行控制信息的下行控制信道的参考信号与所述终端的波束管理过程的参考信号的差异信息；或者，所述QCL信息为以所述终端接收到的下行同步过程的参考信号或者解调所述终端接收到的物理广播信道承载的广播信息的解调参考信号为基准信号时，所述终端解调承载所述下行控制信息的下行控制信道的参考信号与所述下行同步过程的参考信号或者解调所述物理广播信道承载的广播信息的解调参考信号的差异信息。
  4. 如权利要求1所述的方法，其特征在于，所述基站根据确定的至少一个波束方向生成第一下行控制信道配置信息，包括：
    所述基站根据确定的至少一个波束方向，为所述基站给所述终端配置的至少一个控制资源集合中的每个控制资源集合分配波束方向；其中，所述至少一个控制资源集合用于传输所述下行控制信息，所述至少一个控制资源集合中的不同的控制资源集合分配的波束方向相同或者不同，所述每个控制资源集合中承载所述下行控制信息的下行控制信道的不同 候选项目分配的波束方向相同或者不同；
    所述基站根据为所述至少一个控制资源集合中的每个控制资源集合分配波束方向的结果生成所述第一下行控制信道配置信息。
  5. 如权利要求4所述的方法，其特征在于，在所述基站根据确定的至少一个波束方向，为所述基站给所述终端配置的至少一个控制资源集合中的每个控制资源集合分配波束方向之后，所述方法还包括：
    所述基站为所述至少一个控制资源集合中的每个控制资源集合配置一个或者多个QCL信息。
  6. 如权利要求5所述的方法，其特征在于，所述基站为所述至少一个控制资源集合中的每个控制资源集合配置多个QCL信息，包括：
    所述基站为所述每个控制资源集合中的不同聚合等级的所述下行控制信道配置不同的QCL信息；或者，
    所述基站为所述每个控制资源集合中的不同聚合等级的所述下行控制信道的不同候选项目配置不同的QCL信息；或者，
    所述基站为所述每个控制资源集合中的每个候选项目配置多个不同的QCL信息。
  7. 如权利要求1所述的方法，其特征在于，所述基站向所述终端发送所述第一下行控制信道配置信息，包括：
    所述基站通过无线资源控制信令向所述终端发送所述第一下行控制信道配置信息；或者，
    所述基站通过随机接入过程中的message2或message4向所述终端发送所述第一下行控制信道配置信息。
  8. 如权利要求1-7任一所述的方法，其特征在于，在所述基站向所述终端发送所述第一下行控制信道配置信息之后，所述方法还包括：
    若所述基站对用于传输所述终端的下行控制信息的至少一个波束方向进行调整，则所述基站向所述终端发送用于指示所述基站对传输所述终端的下行控制信息的至少一个波束方向进行调整的第二下行控制信道配置信息。
  9. 如权利要求8所述的方法，其特征在于，所述基站向所述终端发送用于指示所述基站对传输所述终端的下行控制信息的至少一个波束方向进行调整的第二下行控制信道配置信息，包括：
    所述基站通过层1信令或者媒体接入控制单元MAC CE向所述终端发送所述第二下行控制信道配置信息。
  10. 一种下行控制信息接收方法，其特征在于，包括：
    终端接收基站发送的第一下行控制信道配置信息；所述第一下行控制信道配置信息包括所述基站确定的用于传输所述终端的下行控制信息的至少一个波束方向的信息；
    所述终端根据所述第一下行控制信道配置信息确定所述至少一个波束方向；
    所述终端在所述至少一个波束方向上监听并接收下行控制信息。
  11. 如权利要求10所述的方法，其特征在于，所述终端根据所述第一下行控制信道配置信息确定所述至少一个波束方向，包括：
    所述终端根据所述第一下行控制信道配置信息，确定所述基站为至少一个控制资源集合中的每个控制资源集合分配的波束方向；其中，所述至少一个控制资源集合为所述基站给所述终端配置的用于传输所述下行控制信息的控制资源集合，所述基站为所述至少一个控制资源集合中的不同的控制资源集合分配相同或者不同的波束方向，所述基站为每个控制资源集合中承载所述下行控制信息的下行控制信道的不同候选项目分配的波束方向相同或者不同。
  12. 如权利要求10所述的方法，其特征在于，所述第一下行控制信道配置信息包括准协同定位QCL信息；
    其中，所述QCL信息为以所述波束管理过程的参考信号为基准信号时，所述终端解调承载所述下行控制信息的下行控制信道的参考信号与所述终端的波束管理过程的参考信号的相对参数信息；或者，所述QCL信息为以所述终端接收到的下行同步过程的参考信号或者解调所述终端接收到的物理广播信道承载的广播信息的解调参考信号为基准信号时，所述终端解调承载所述下行控制信息的下行控制信道的参考信号与所述下行同步过程的参考信号或者解调所述物理广播信道承载的广播信息的解调参考信号的相对参数信息。
  13. 如权利要求12所述的方法，其特征在于，所述终端根据所述第一下行控制信道配置信息，确定所述基站为至少一个控制资源集合中的每个控制资源集合分配的波束方向，包括：
    当所述终端确定所述基站为所述至少一个控制资源集合中的每个控制资源集合配置一个QCL信息时，所述终端根据所述一个QCL信息确定所述每个控制资源集合对应的波束方向；或者，
    当所述终端确定所述基站为所述至少一个控制资源集合中的每个控制资源集合配置多个QCL信息时，所述终端根据所述多个QCL信息确定每个控制资源集合中的不同聚合等级的所述下行控制信道候选项目对应的波束方向，或者不同聚合等级的所述下行控制信 道的不同候选项目对应的波束方向，或者每个控制资源集合中的每个候选项目对应的多个波束方向。
  14. 如权利要求10所述的方法，其特征在于，在所述终端接收所述基站发送的第一下行控制信道配置信息之前，所述方法还包括：
    所述终端根据接收到的所述基站不同波束方向的信号强度生成波束方向信息；
    所述终端向所述基站发送所述波束方向信息，所述波束方向信息指示所述基站向所述终端传输控制信息的波束方向。
  15. 如权利要求14所述的方法，其特征在于，所述终端向所述基站发送波束方向信息，包括：
    所述终端在基站的波束管理过程中向所述基站发送所述波束方向信息；或者，
    所述终端在随机接入过程中向所述基站发送所述波束方向信息。
  16. 如权利要求10所述的方法，其特征在于，所述终端接收所述基站发送的所述第一下行控制信道配置信息，包括：
    所述终端接收所述基站发送的无线资源控制信令中包含的所述第一下行控制信道配置信息；或者，
    所述终端接收随机接入过程中所述基站发送的message2或message4中包含的所述第一下行控制信道配置信息。
  17. 如权利要求10-16任一所述的方法，其特征在于，所述方法还包括：
    所述终端接收所述基站发送的第二下行控制信道配置信息，所述第二下行控制信道配置信息用于指示所述基站对传输所述终端的下行控制信息的至少一个波束方向进行调整的信息；
    所述终端根据所述第二下行控制信道配置信息确定调整后的至少一个波束方向；
    所述终端在所述调整后的至少一个波束方向上监听并接收下行控制信息。
  18. 如权利要求17所述的方法，其特征在于，所述终端接收所述基站发送的第二下行控制信道配置信息，包括：
    所述终端通过层1信令或者媒体接入控制单元MAC CE接收所述基站发送的所述第二下行控制信道配置信息。
  19. 一种下行控制信息发送设备，其特征在于，该设备包括：
    第一确定单元，用于确定用于传输终端的下行控制信息的至少一个波束方向，并根据确定的至少一个波束方向生成第一下行控制信道配置信息；所述第一下行控制信道配置信息用于指示所述设备向所述终端发送的所述下行控制信息的波束方向；
    第一发送单元，用于向所述终端发送所述第一下行控制信道配置信息后，通过所述至少一个波束方向向所述终端发送所述下行控制信息。
  20. 如权利要求19所述的设备，其特征在于：
    所述第一确定单元还用于：在确定用于传输所述终端的下行控制信息的至少一个波束方向之前，通过波束管理过程确定波束方向信息；所述波束方向信息指示所述设备向所述终端传输控制信息的波束方向；或者，在所述终端的随机接入过程中确定所述波束方向信息；
    则所述第一确定单元确定用于传输所述终端的下行控制信息的至少一个波束方向，包括：
    所述第一确定单元根据所述波束方向信息确定用于传输所述终端的下行控制信息的至少一个波束方向。
  21. 如权利要求20所述的设备，其特征在于，所述第一下行控制信道配置信息包括准协同定位QCL信息；
    其中，所述QCL信息为以所述波束管理过程的参考信号为基准信号时，所述终端解调承载所述下行控制信息的下行控制信道的参考信号与所述终端的波束管理过程的参考信号的差异信息；或者，所述QCL信息为以所述终端接收到的下行同步过程的参考信号或者解调所述终端接收到的物理广播信道承载的广播信息的解调参考信号为基准信号时，所述终端解调承载所述下行控制信息的下行控制信道的参考信号与所述下行同步过程的参考信号或者解调所述物理广播信道承载的广播信息的解调参考信号的差异信息。
  22. 如权利要求19所述的设备，其特征在于，所述设备还包括分配单元；
    所述分配单元用于：根据确定的至少一个波束方向，为基站给所述终端配置的至少一个控制资源集合中的每个控制资源集合分配波束方向；其中，所述至少一个控制资源集合用于传输所述下行控制信息，所述至少一个控制资源集合中的不同的控制资源集合分配的波束方向相同或者不同，所述每个控制资源集合中承载所述下行控制信息的下行控制信道的不同候选项目分配的波束方向相同或者不同；
    所述第一确定单元，具体用于根据所述分配单元为所述至少一个控制资源集合中的每个控制资源集合分配波束方向的结果生成所述第一下行控制信道配置信息。
  23. 如权利要求22所述的设备，其特征在于，所述设备还包括配置单元；
    所述配置单元用于：在所述分配单元根据确定的至少一个波束方向，为基站给所述终端配置的至少一个控制资源集合中的每个控制资源集合分配波束方向之后，为所述至少一个控制资源集合中的每个控制资源集合配置一个或者多个所述QCL信息。
  24. 如权利要求23所述的设备，其特征在于，所述配置单元为所述至少一个控制资源集合中的每个控制资源集合配置一个或者多个QCL信息，包括：
    所述配置单元为所述每个控制资源集合中的不同聚合等级的所述下行控制信道配置不同的QCL信息；或者，
    所述配置单元为所述每个控制资源集合中的不同聚合等级的所述下行控制信道的不同候选项目配置不同的QCL信息；或者，
    所述配置单元为所述每个控制资源集合中的每个候选项目配置多个不同的QCL信息。
  25. 如权利要求19所述的设备，其特征在于，所述第一发送单元向所述终端发送所述第一下行控制信道配置信息，包括：
    所述第一发送单元通过无线资源控制信令向所述终端发送所述第一下行控制信道配置信息；或者，
    所述第一发送单元通过随机接入过程中的message2或message4向所述终端发送所述第一下行控制信道配置信息。
  26. 如权利要求19-25任一所述的设备，其特征在于，所述设备还包括调整单元；
    所述调整单元用于：对用于传输所述终端的下行控制信息的至少一个波束方向进行调整；
    所述第一发送单元还用于：向所述终端发送用于指示所述基站对传输所述终端的下行控制信息的至少一个波束方向进行调整的第二下行控制信道配置信息。
  27. 如权利要求26所述的设备，其特征在于，所述第一发送单元向所述终端发送用于指示所述基站对传输所述终端的下行控制信息的至少一个波束方向进行调整的第二下行控制信道配置信息，包括：
    所述第一发送单元通过层1信令或者媒体接入控制单元MAC CE向所述终端发送所述第二下行控制信道配置信息。
  28. 一种下行控制信息接收设备，其特征在于，包括：
    接收单元，用于：接收基站发送的第一下行控制信道配置信息；所述第一下行控制信道配置信息包括所述基站确定的用于传输所述终端的下行控制信息的至少一个波束方向的信息；
    第二确定单元，用于：根据所述第一下行控制信道配置信息确定所述至少一个波束方向；
    监听单元，用于：在所述至少一个波束方向上监听并接收下行控制信息。
  29. 如权利要求28所述的设备，其特征在于，所述第二确定单元根据所述第一下行 控制信道配置信息确定所述至少一个波束方向，包括：
    所述第二确定单元根据所述第一下行控制信道配置信息，确定所述基站为至少一个控制资源集合中的每个控制资源集合分配的波束方向；其中，所述至少一个控制资源集合为所述基站给所述终端配置的用于传输所述下行控制信息的控制资源集合，所述基站为所述至少一个控制资源集合中的不同的控制资源集合分配相同或者不同的波束方向，所述每个控制资源集合中承载所述下行控制信息的下行控制信道的不同候选项目分配的波束方向相同或者不同。
  30. 如权利要求29所述的设备，其特征在于，所述第一下行控制信道配置信息包括准协同定位QCL信息；
    其中，所述QCL信息为以所述波束管理过程的参考信号为基准信号时，所述终端解调承载所述下行控制信息的下行控制信道的参考信号与所述终端的波束管理过程的参考信号的相对参数信息；或者，所述QCL信息为以所述终端接收到的下行同步过程的参考信号或者解调所述终端接收到的物理广播信道承载的广播信息的解调参考信号为基准信号时，所述终端解调承载所述下行控制信息的下行控制信道的参考信号与所述下行同步过程的参考信号或者解调所述物理广播信道承载的广播信息的解调参考信号的相对参数信息。
  31. 如权利要求30所述的设备，其特征在于，所述第二确定单元根据所述第一下行控制信道配置信息，确定所述基站为至少一个控制资源集合中的每个控制资源集合分配的波束方向，包括：
    当所述第二确定单元确定所述基站为所述至少一个控制资源集合中的每个控制资源集合配置一个QCL信息时，所述第二确定单元根据所述一个QCL信息确定所述每个控制资源集合对应的波束方向；或者，
    当所述第二确定单元确定所述基站为所述至少一个控制资源集合中的每个控制资源集合配置多个QCL信息时，所述第二确定单元根据所述第一个QCL信息确定每个控制资源集合中的不同聚合等级的所述下行控制信道对应的波束方向，或者不同聚合等级的所述下行控制信道的不同候选项目对应的波束方向，或者所述每个控制资源集合中的每个候选项目对应的多个波束方向。
  32. 如权利要求28所述的设备，其特征在于，所述设备还包括生成单元和第二发送单元；
    所述生成单元用于：在所述接收单元接收所述基站发送的第一下行控制信道配置信息之前，根据接收到的所述基站不同波束方向的信号强度生成波束方向信息；
    所述第二发送单元用于：向所述基站发送所述波束方向信息，所述波束方向信息指示所述基站向所述设备传输控制信息的波束方向。
  33. 如权利要求32所述的设备，其特征在于，所述接收单元接收所述基站发送的第一下行控制信道配置信息，包括：
    所述接收单元接收所述基站发送的无线资源控制信令中包含的所述第一下行控制信道配置信息；或者，
    所述接收单元接收随机接入过程中所述基站发送的message2或message4中包含的所述第一下行控制信道配置信息。
  34. 如权利要求28-33任一所述的设备，其特征在于，
    所述接收单元还用于：接收所述基站发送的第二下行控制信道配置信息，所述第二下行控制信道配置信息用于指示所述基站对传输所述设备的下行控制信息的至少一个波束方向进行调整的信息；
    所述第二确定单元还用于：根据所述第二下行控制信道配置信息确定调整后的至少一个波束方向；
    所述监听单元还用于：在所述调整后的至少一个波束方向上监听并接收所述下行控制信息。
  35. 如权利要求34所述的设备，其特征在于，所述接收单元接收所述基站发送的第二下行控制信道配置信息，包括：
    所述接收单元通过L1信令或者MAC CE接收所述基站发送的所述第二下行控制信道配置信息。
  36. 一种计算机装置，其特征在于，所述装置包括处理器，所述处理器用于执行存储器中存储的计算机程序时实现如权利要求1-18中任一项所述方法的步骤。
  37. 一种计算机可读存储介质，其上存储有计算机程序，其特征在于，所述计算机程序被处理器执行时实现如权利要求1-18中任一项所述方法的步骤。
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