WO2018141247A1 - 控制信息的发送和接收方法、接入网设备和终端设备 - Google Patents

控制信息的发送和接收方法、接入网设备和终端设备 Download PDF

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Publication number
WO2018141247A1
WO2018141247A1 PCT/CN2018/074789 CN2018074789W WO2018141247A1 WO 2018141247 A1 WO2018141247 A1 WO 2018141247A1 CN 2018074789 W CN2018074789 W CN 2018074789W WO 2018141247 A1 WO2018141247 A1 WO 2018141247A1
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Prior art keywords
control channel
terminal device
channel candidate
aggregation level
candidate set
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PCT/CN2018/074789
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English (en)
French (fr)
Inventor
薛丽霞
孙昊
曲秉玉
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP18747935.7A priority Critical patent/EP3567956B1/en
Publication of WO2018141247A1 publication Critical patent/WO2018141247A1/zh
Priority to US16/530,657 priority patent/US11432273B2/en

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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 signaling, i.e. of overhead other than pilot signals
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0036—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver
    • H04L1/0038—Blind format detection
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0092—Indication of how the channel is divided
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • 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
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data
    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/0008—Wavelet-division

Definitions

  • the present invention relates to the field of communications, and in particular, to a method for transmitting and receiving control information, an access network device, and a terminal device.
  • the basic unit in the frequency domain is one subcarrier
  • the basic unit in the time domain is an Orthogonal Frequency Division Multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbol.
  • OFDM Orthogonal Frequency Division Multiplexing
  • a Resource Element (RE) is the smallest physical resource and contains one subcarrier within one OFDM symbol.
  • the basic scheduling unit of the time domain is a slot or a mini-slot, which is collectively referred to herein as a slot.
  • a slot consists of several OFDM symbols.
  • a time slot can be divided into a control area and a data area, and a downlink control channel (PDCCH) carries Downlink Control Information (DCI) in the control area.
  • PDCH downlink control channel
  • DCI Downlink Control Information
  • the user-specific search space is a PDCCH candidate set of the user equipment, and is used to carry user-specific downlink control information.
  • the PDCCH candidate set includes four different aggregation levels (Aggregation Level) downlink control channels, and the starting positions of the PDCCH candidate subsets corresponding to each aggregation level are independently calculated.
  • the starting position of the downlink control channel of any aggregation level is determined by the user equipment (User Equipment, UE) identifier ID, and the candidate set of the downlink control channel of different aggregation levels starts from There is no direct relevance to the starting position.
  • the downlink control region of the system includes one or more downlink control channel resource sets.
  • PDCCH candidates of different aggregation levels are nested.
  • the resource of a lower aggregation level downlink control channel is a true subset of the resources of a higher aggregation level downlink control channel. It is also possible for one UE to search for downlink control information on multiple downlink control channel resource sets.
  • the existing methods for determining the PDCCH search space cannot satisfy the above design.
  • the embodiment of the present invention provides a method for transmitting control information, a method for receiving control information, an access network device, and a terminal device, and can determine a PDCCH candidate set under the condition that PDCCH candidates of different aggregation levels are nested.
  • a method for transmitting control information including:
  • the access network device determines a control channel candidate set of the terminal device, where the control channel candidate set includes at least one control channel candidate, the at least one control channel candidate includes at least one control channel unit, and the control channel candidate set is included in Within the at least one control channel unit set, the control channel unit set includes a number of control channel units greater than or equal to a number of control channel units corresponding to a maximum aggregation level supported by the terminal device; the control channel unit set belongs to the control The control channel candidate of the channel candidate set has at least two aggregation levels or all aggregation levels at a maximum aggregation level supported by the terminal device;
  • the access network device transmits control information to the terminal device by using at least one control channel candidate in the control channel candidate set.
  • a method for receiving control information including:
  • the control channel candidate set includes at least one control channel candidate, the at least one control channel candidate includes at least one control channel unit, and the control channel candidate set includes Within the at least one control channel element set, the control channel unit set includes a number of control channel units greater than or equal to a number of control channel units corresponding to a maximum aggregation level supported by the terminal device; the control channel unit set belongs to the The control channel candidate of the control channel candidate set has at least two aggregation levels or all aggregation levels under the maximum aggregation level supported by the terminal device;
  • the terminal device detects a control channel candidate in the control channel candidate set and receives control information.
  • an access network device including:
  • a processor configured to determine a control channel candidate set of the terminal device, where the control channel candidate set includes at least one control channel candidate, the at least one control channel candidate includes at least one control channel unit, and the control channel candidate set includes Within the at least one control channel element set, the control channel unit set includes a number of control channel units greater than or equal to a number of control channel units corresponding to a maximum aggregation level supported by the terminal device; the control channel unit set belongs to the The control channel candidate of the control channel candidate set has at least two aggregation levels or all aggregation levels at a maximum aggregation level supported by the terminal device;
  • a transceiver configured to send, by the access network device, control information to the terminal device by using at least one control channel candidate in the control channel candidate set.
  • a terminal device including:
  • a processor configured to determine a control channel candidate set corresponding to the terminal device, where the control channel candidate set includes at least one control channel candidate, and the at least one control channel candidate includes at least one control channel unit, the control channel
  • the candidate set is included in the at least one control channel unit set, and the control channel unit set includes a number of control channel units greater than or equal to a number of control channel units corresponding to a maximum aggregation level supported by the terminal device;
  • the control channel candidates belonging to the control channel candidate set have at least two aggregation levels or all aggregation levels under a maximum aggregation level supported by the terminal device;
  • a transceiver configured to detect a control channel candidate in the control channel candidate set and receive control information.
  • the method for transmitting control information, the method for receiving control information, the access network device, and the terminal device provided by the above aspects can determine the PDCCH candidate set under the condition that the PDCCH candidates of different aggregation levels are nested, and can satisfy the next generation. Requirements for wireless communication systems.
  • 1 is a schematic structural diagram of a time slot
  • FIG. 2 is a schematic diagram of a wireless communication system applied to an embodiment of the present invention
  • FIG. 3a is a schematic flowchart of a method for sending control information according to an embodiment of the present invention
  • FIG. 3b is a schematic flowchart of an implementation manner of a method for sending control information according to an embodiment of the present invention.
  • FIG. 3c is a schematic flowchart of another implementation manner of a method for sending control information according to an embodiment of the present invention.
  • FIG. 4a is a schematic structural diagram of a control channel according to an implementation manner of an embodiment of the present invention.
  • FIG. 4b is a schematic structural diagram of a control channel according to an implementation manner of an embodiment of the present invention.
  • FIG. 4c is a schematic structural diagram of a control channel according to an implementation manner of an embodiment of the present invention.
  • FIG. 4d is a schematic structural diagram of a control channel according to an implementation manner of an embodiment of the present invention.
  • 4e is a schematic structural diagram of a control channel according to an implementation manner of an embodiment of the present invention.
  • FIG. 4f is a schematic structural diagram of a control channel according to an implementation manner of an embodiment of the present invention.
  • FIG. 4g is a schematic structural diagram of a control channel according to an implementation manner of an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a logical structure of an implementation of determining a CCE set according to an embodiment of the present invention.
  • FIG. 6 is a schematic flowchart of a method 600 for receiving control information according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of an access network device according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
  • the technical solutions of the embodiments of the present invention can be applied to various communication systems, such as: wireless wifi, Worldwide Interoperability for Microwave Access (WiMAX), and Global System of Global Communications (Global System of Mobile communication, GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, Universal Mobile Telecommunication System (UMTS), 5G system, and 3rd Generation Partnership Project (The 3rd Generation Partnership Project, 3GPP) related cellular system and the like
  • the embodiment of the present invention is not limited, but for convenience of description, the embodiment of the present invention will be described by taking an LTE network as an example.
  • Embodiments of the present invention can be used in wireless networks of different standards.
  • Access network devices can be different physical devices in different systems.
  • an access network device in Long Term Evolution (LTE) and LTE-A includes an evolved base station (eNodeB, eNB), and an access network device in Wideband Code Division Multiple Access (WCDMA). Including Radio Network Controller (RNC) and/or NodeB.
  • RNC Radio Network Controller
  • WiMax Worldwide Interoperability for Microwave Access
  • the terminal device may also be referred to as a user equipment (UE, User Equipment), a mobile station (MS, Mobile Station), a mobile terminal (Mobile Terminal), etc., and the terminal may be connected via wireless.
  • the RAN Radio Access Network
  • the terminal may be a mobile phone (or "cellular" phone), a computer with communication function, etc., for example, the terminal may also be portable. , pocket, handheld, computer built-in or in-vehicle mobile devices.
  • the method and apparatus provided by the embodiments of the present invention may be applied to a terminal device or a network device, where the terminal device or the network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • the hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and a memory (also referred to as main memory).
  • the operating system may be any one or more computer operating systems that implement business processing through a process, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a Windows operating system.
  • the application layer includes applications such as browsers, contacts, word processing software, and instant messaging software.
  • the specific structure of the execution body of the method for transmitting a signal is not particularly limited as long as the program of the code for recording the method of transmitting the signal of the embodiment of the present invention can be executed by
  • the method for transmitting a signal according to the embodiment of the present invention may be used for communication.
  • the execution body of the method for wireless communication according to the embodiment of the present invention may be a terminal device or a network device, or may be a terminal device or a network device capable of calling a program and The functional module that executes the program.
  • a computer readable medium may include, but is not limited to, a magnetic storage device (eg, a hard disk, a floppy disk, or a magnetic tape, etc.), such as a compact disc (CD), a digital versatile disc (DVD). Etc.), smart cards and flash memory devices (eg, erasable programmable read-only memory (EPROM), cards, sticks or key drivers, etc.).
  • a magnetic storage device eg, a hard disk, a floppy disk, or a magnetic tape, etc.
  • CD compact disc
  • DVD digital versatile disc
  • Etc. smart cards and flash memory devices (eg, erasable programmable read-only memory (EPROM), cards, sticks or key drivers, etc.).
  • various storage media described herein can represent one or more devices and/or other machine-readable media for storing information.
  • the term "machine-readable medium” may include, without limitation, a wireless channel and various other mediums capable of storing, containing, and/or carrying instructions and/or data.
  • the term "and/or” is merely an association relationship describing an associated object, indicating that there may be three relationships.
  • a and/or B may indicate that A exists separately, and A and B exist simultaneously, and B cases exist alone.
  • the character "/" in this article generally indicates that the contextual object is an "or” relationship.
  • the “first” and “second” in the embodiments of the present invention are only used for distinguishing, and do not represent the meaning of the order or size.
  • the wireless communication system 100 includes an access network device 102, which may include one antenna or multiple antennas such as antennas 104, 106, 108, 110, 112, and 114.
  • access network device 102 may additionally include a transmitter chain and a receiver chain, as will be understood by those of ordinary skill in the art, which may include multiple components associated with signal transmission and reception (eg, processor, modulator, complex) Consumer, demodulator, demultiplexer or antenna, etc.).
  • Network device 102 can communicate with a plurality of terminal devices, such as terminal device 116 and terminal device 122. However, it will be appreciated that network device 102 can communicate with any number of terminal devices similar to terminal device 116 or terminal device 122.
  • terminal device 116 is in communication with antennas 112 and 114, wherein antennas 112 and 114 transmit information to terminal device 116 over a forward link (also referred to as downlink) 118 and through the reverse link (also Information referred to as uplink 120 receives information from terminal device 116.
  • terminal device 122 is in communication with antennas 104 and 106, wherein antennas 104 and 106 transmit information to terminal device 122 over forward link 124 and receive information from terminal device 122 over reverse link 126.
  • FIG. 3a is a schematic flowchart of a method 300 for transmitting control information according to an embodiment of the present invention. As shown in Figure 3a, method 300 includes the following.
  • the access network device determines a control channel candidate set of the terminal device.
  • the control channel candidate set includes at least one control channel candidate, the at least one control channel candidate includes at least one control channel element (CCE), and the control channel candidate set is included in at least one control
  • the number of control channel units included in the control channel element set (CCE set) is greater than or equal to the number of control channel units corresponding to the maximum aggregation level supported by the terminal device; the control channel unit
  • the control channel candidates belonging to the control channel candidate set within the set have at least two aggregation levels or all aggregation levels under the maximum aggregation level supported by the terminal device.
  • the access network device sends control information to the terminal device by using at least one control channel candidate in the control channel candidate set.
  • FIG. 4a is a schematic structural diagram of a control channel according to an implementation manner of an embodiment of the present invention.
  • the downlink control channel 410 on the downlink between the access network device 102 and the terminal device 116 includes a plurality of control channel elements 420.
  • Each CCE 420 has an index, for example, the index of CCE-1 is 1, and the index of CCE-2 is 2.
  • the plurality of CCEs 420 may have the same size, that is, occupy the same number of time-frequency resources.
  • the CCE 420 in the embodiment of the present invention may be a logical unit, and the CCE 420 may be mapped to the actual time-frequency resource by means of resource mapping.
  • the CCE 420 may be mapped to a time-frequency resource in a localized or distributed manner, or the CCE 420 may perform a time-domain re-frequency domain with all or a portion of the resource elements occupied by the CCE 420.
  • the mapping is performed on the time-frequency resource, or the CCE 420 maps to the time-frequency resource by using all or part of the resource elements occupied by the CCE 420 in the first-frequency domain and the time-domain.
  • control channel can be divided into one or more control channel regions. If the control channel is divided into one control channel region, the control channel elements CCE can be uniformly numbered throughout the entire region. If the control channel is divided into multiple control channel regions, the control channel unit CCE may perform independent numbering or multiple control channel region joint numbers in each control channel region, and the method of specifically dividing into multiple vacant channel regions may be At the same time, the domain symbols correspond to different control channel regions, and the first two symbols correspond to one control channel region, and the third symbol corresponds to another control channel region; or different frequency domain regions correspond to different control channel regions, or time-frequency domains.
  • the joint combination forms different control channel regions. As shown in FIG.
  • control channel 410 can be divided into multiple control channel regions, such as control channel regions 411-413, over different time domain symbols.
  • the control channel 410 includes a plurality of control channel resource sets 431-433 corresponding to the areas 411-413, each control channel resource set includes a plurality of CCEs 420, and the CCE 420 included in the control channel resource set is located. Within the corresponding control channel area.
  • Each control channel region 411-413 may have a control channel region index. For example, the index of the control channel regions 411-413 is 1-3, respectively.
  • the CCE index of CCE 420 may be numbered separately within each control channel resource set.
  • the CCE index of the CCE 420 may also be consecutively numbered.
  • the control channel candidates have multiple aggregation levels (AL), for example, AL can be equal to 1, 2, 4, or 8.
  • a control channel candidate with an aggregation level of L is composed of L CCEs, and L is a positive integer, for example, 1, 2, 4, or 8.
  • L max-ran and L max-ue may be the same or different.
  • the maximum aggregation level supported by the terminal device is a maximum aggregation level that the terminal's own capability can support, or a maximum aggregation level that can be supported by the access network device or itself within the range of the capability. .
  • the capability of the terminal device can support a maximum aggregation level of 8
  • the access network device or the terminal device itself may be current due to the current channel condition of the terminal device, the current load of the access network device, and the like.
  • the number of control channel candidates is one or more. That is, one or more control channel candidates under each aggregation level is the search space of the terminal device at the aggregation level.
  • the control channel candidates under all aggregation levels supported by the terminal device constitute a control channel candidate set, that is, the entire search space of the terminal device.
  • the maximum aggregation level supported by the terminal device is 8.
  • the number of control channel candidates may be 8.
  • the number of candidates can be 1. That is to say, the terminal device needs to blindly detect the above 15 control channel candidates.
  • the sum of the number of control channel candidates (ie, the number of control channel candidates within the control channel candidate set) of the terminal device at each aggregation level it supports should be less than or equal to the maximum number of blind detections allowed by the terminal device. It should be noted that the number of control channel candidates under each of the foregoing aggregation levels is merely an example, and the present invention is not limited thereto.
  • the search space in the embodiment of the present invention is nested.
  • control channel candidate #4-1 is composed of CCE m to CCE m+3, and the control channel candidate #4-2 is composed of CCE m+4 to CCE m+7.
  • the control channel candidate #2-1 is composed of CCE m to CCE m+1; and the control channel candidate #2-2 is composed of CCE m+3 to CCE m+4.
  • the control channel candidate #1-1 is composed of CCE m+1; the control channel candidate #1-2 is composed of CCE m+3; the control channel candidate #1-3 is composed of CCE m+5; and the control channel candidate #1-4 is composed of CCE m+7 is composed.
  • FIG. 4e is merely an example, and the control channel candidates included in the terminal device may be different.
  • the CCE occupied by one control channel candidate that defines the maximum aggregation level supported by the terminal device is a CCE set, and the control of the terminal device is controlled based on the nested search space design as shown in FIG. 4e.
  • the set of channel candidates is included in at least one CCE set.
  • the control channel candidate set of the terminal device is included in one CCE set, that is, CCE m to CCE m+7.
  • the control channel candidates belonging to the control channel candidate set within the control channel element set have at least two aggregation levels or all aggregation levels under the maximum aggregation level supported by the terminal device.
  • the number of CCEs included in one control channel candidate set unit may be a positive integer multiple of a CCE occupied by one control channel candidate of a maximum aggregation level supported by the terminal device.
  • the control channel candidate set of the terminal device is included in a plurality of CCE sets.
  • the three CCE sets may include consecutive CCEs.
  • CCE set A occupies CCE m to CCE m+7
  • CCE set B occupies CCE m+8 to CCE m+15
  • CCE set C occupies CCE m+16 to CCE m+23, specifically the first one can be determined first
  • the CCE sets the starting CCE location of A, and then determines the specific CCEs included in each CCE set according to the number of CCEs included in CCE sets A, B, and C.
  • the CCEs included in the three CCE sets are independently determined, and the initial CCE locations including each CCE set may be independently determined, for example, according to the control channel region index to which the CCE set belongs.
  • CCE set A occupies CCE m to CCE m+7
  • CCE set B occupies CCE m+i to CCE m+i+7
  • CCE set C occupies CCE m+j to CCE m+j+7.
  • m is a natural number or a positive integer
  • i and j are different positive integers.
  • the CCEs included in the three CCE sets may also be non-contiguous. Specifically, the initial CCE location of the first CCE set A may be determined first, and then the CCE relationship and/or CCE relationship may be initiated according to the CCE sets A, B, and C. The number of CCEs included in the CCE set A, B, and C or the offset is determined.
  • the control channel candidates belonging to the control channel candidate set of the terminal device included in each CCE set are similar to FIG. 4e, and are not described herein again.
  • the distribution of multiple CCE sets may include: multiple CCE sets may belong to the same control channel resource set; multiple CCE sets may belong to different A set of control channel resources, each specific CCE set and control channel resource set must have a clear correspondence, or predefined, or configured by the system to the terminal device.
  • the one or more CCE sets may be mapped to the same or Different time-frequency resources.
  • the terminal device may according to one or more CCE sets included in its control channel candidate set, and the one or more CCE sets and control channels.
  • the mapping relationship of the resource sets determines all control channel candidate sets of the terminal device.
  • the selection of the control channel candidate belongs to the control channel candidate set in order to reduce the collision probability of the transmission control channel of different terminal devices.
  • multiple CCE sets may be adopted and each CCE is concentrated.
  • Control channel candidate set to reduce the collision probability of different terminal equipment transmission control channels.
  • the number of control channel candidates in the control channel candidate set is less than or equal to a maximum number of blind detections supported by the terminal device; and/or, the control channel candidate of the first aggregation level in the control channel candidate set.
  • the number is less than or equal to the maximum number of blind detections supported by the terminal device for the first aggregation level.
  • the access network device in step 310 determines that the control channel candidate set of the terminal device specifically includes:
  • the access network device determines the at least one control channel unit set corresponding to the terminal device.
  • the access network device determines the control channel candidate set in the at least one control channel element set.
  • the access network device in step 310 determines that the control channel candidate set of the terminal device specifically includes:
  • the access network device determines, in the at least one control channel resource set, a control channel candidate set of the terminal device, where the at least one control channel resource set includes a plurality of control channel element sets.
  • the access network device determines the at least one control channel unit set corresponding to the terminal device.
  • the access network device determines the control channel candidate set in the at least one control channel element set.
  • the access network device determines that the at least one control channel unit set corresponding to the terminal device may specifically adopt the following manner.
  • the access network device is configured according to the identifier information of the terminal device, the maximum aggregation level supported by the terminal device, the slot information, the symbol number information of the control channel, and one or more of the first offsets. Determining the set of the at least one control channel unit corresponding to the terminal device; or determining, by the access network device, the at least one control channel unit set corresponding to the terminal device according to a random number function having at least one variable.
  • the at least one variable includes at least one of identification information of the terminal device, a maximum aggregation level supported by the terminal device, slot information, and a first offset.
  • the access network device may utilize a function or a lookup table, and identify one of the identification information of the terminal device, the maximum aggregation level supported by the terminal device, the time slot information, and the first offset. Or a plurality of inputs as a function or a lookup table, to obtain a CCE index representing the CCE set in one or each CCE set corresponding to the terminal device.
  • the CCE index representing the CCE set in each CCE set may be the lowest or highest index of the index value in the CCE set. For example, when multiple CCE sets are consecutive CCE sets as shown in FIG.
  • the CCE indexes CCE m, CCE m+8, CCE m+16 representing the three CCE sets can be obtained, and only the first one can be obtained.
  • CCE index CCE m of the CCE set For another example, when a plurality of CCE sets are discontinuous CCE sets as shown in FIG. 4g, CCE indexes CCE m, CCE m+i, CCE m+j representing three CCE sets can be obtained. Where i and j are the first offsets.
  • the first offset may be preset in the access network device and the terminal device, or may be configured by the access network device and notified to the terminal device by signaling.
  • the identification information of the terminal device may be temporary identification information that the access network device allocates for the terminal device. Using the identification information of the terminal device as an input can make the starting positions of the search spaces of at least two different terminal devices different.
  • the time slot information can be a slot number and/or a mini slot number. Utilizing the time slot information as an input may cause the terminal device to differ in the starting position of the search space on at least two different time slots or mini time slots.
  • This function can be a random number function, such as a hash function.
  • Manner 2 the access network device according to the index of the control channel resource set, the identifier information of the terminal device, the maximum aggregation level supported by the terminal device, the symbol number information of the control channel resource set, and the time slot information. Determining, by one or more of the first offsets, the at least one control channel element set corresponding to the terminal device; or the access network device determining the terminal according to a random number function having at least one variable The at least one control channel unit set corresponding to the device, wherein the at least one variable includes an index of the control channel resource set, identifier information of the terminal device, a maximum aggregation level supported by the terminal device, and slot information. And at least one of the first offsets.
  • the second method when the CCE in the control channel is divided into multiple control channel resource sets, the second method further adopts the index of the control channel resource set as a function variable or a lookup table input on the basis of the first mode. Obtaining a CCE index representing the CCE set in each CCE set corresponding to the terminal device.
  • step 313 and step 323 determining, by the access network device, the control channel candidate set in the at least one control channel element set specifically includes the following manner.
  • Manner 1 The access network device determines, according to the first configuration information, the control channel candidate set included in the at least one control channel element set, where the first configuration information is first notified to the terminal device by using high layer signaling .
  • the first configuration information may be a second offset.
  • Manner 2 the access network device determines, according to the identifier information of the terminal device, and/or the group identifier of the terminal device group to which the terminal device belongs, the control channel candidate set included in the at least one control channel unit set. .
  • the CCE index may not uniquely determine the starting position of the search space.
  • a combination of an index of a control channel resource set and a CCE index may be used to identify the CCE set and control channel candidates in the foregoing embodiments.
  • FIG. 6 is a schematic flowchart of a method 600 for receiving control information according to an embodiment of the present invention.
  • the control channel receiving method 600 is a method corresponding to the foregoing sending method. Therefore, the content that has been described in the foregoing sending method is also applicable to the receiving method in this embodiment, and details are not described herein again.
  • the method 600 includes the following.
  • the terminal device determines a control channel candidate set corresponding to the terminal device.
  • the control channel candidate set includes at least one control channel candidate, the at least one control channel candidate includes at least one control channel unit, and the control channel candidate set is included in at least one control channel unit set.
  • the number of control channel units included in the control channel unit set is greater than or equal to the number of control channel units corresponding to the maximum aggregation level supported by the terminal device; the control channel unit set belongs to the control channel candidate set.
  • the control channel candidate has at least two aggregation levels or all aggregation levels under the maximum aggregation level supported by the terminal device.
  • the terminal device detects a control channel candidate in the control channel candidate set and receives control information.
  • each of the at least one control channel candidate unit set includes multiple control channel candidates, and some of the multiple control channel candidates belong to the control channel candidate set.
  • the number of control channel candidates in the control channel candidate set is less than or equal to a maximum number of blind detections supported by the terminal device; and/or, the control channel candidate of the first aggregation level in the control channel candidate set.
  • the number is less than or equal to the maximum number of blind detections supported by the terminal device for the first aggregation level.
  • the method further includes: the terminal device determining, in the at least one control channel resource set, a control channel candidate set of the terminal device, where the at least one control channel resource set includes multiple control channel element sets.
  • the determining the control channel candidate set of the terminal device includes:
  • the terminal device Determining, by the terminal device, the at least one control channel unit set corresponding to the terminal device according to a random number function having at least one variable, wherein the at least one variable includes identifier information of the terminal device, supported by the terminal device At least one of a maximum aggregation level, slot information, and a first offset.
  • determining the control channel candidate set of the terminal device includes:
  • the determining the control channel candidate set of the terminal device further includes:
  • the maximum aggregation level supported by the terminal device is a maximum aggregation level that the terminal device can support, or the access network device or the terminal device is within the range of the capability.
  • the maximum aggregation level configured.
  • FIG. 7 is a schematic structural diagram of an access network device according to an embodiment of the present invention.
  • the access network device 700 includes:
  • the processor 710 is configured to determine a control channel candidate set of the terminal device, where the control channel candidate set includes at least one control channel candidate, the at least one control channel candidate includes at least one control channel unit, and the control channel candidate set Included in the at least one control channel unit set, the control channel unit set includes a number of control channel units greater than or equal to a number of control channel units corresponding to a maximum aggregation level supported by the terminal device;
  • the control channel candidate of the control channel candidate set has at least two aggregation levels or all aggregation levels at a maximum aggregation level supported by the terminal device;
  • the transceiver 720 is configured to send, by the access network device, control information to the terminal device by using at least one control channel candidate in the control channel candidate set.
  • each of the at least one control channel candidate unit set includes multiple control channel candidates, and some of the multiple control channel candidates belong to the control channel candidate set.
  • the number of control channel candidates in the control channel candidate set is less than or equal to a maximum number of blind detections supported by the terminal device.
  • the number of control channel candidates of the first aggregation level in the control channel candidate set is less than or equal to the maximum number of blind detections supported by the terminal device for the first aggregation level.
  • the processor 710 is further configured to determine, in the at least one control channel resource set, a control channel candidate set of the terminal device, where the at least one control channel resource set includes multiple control channel element sets.
  • the determining, by the processor 710, the control channel candidate set of the terminal device includes:
  • the processor 710 is configured to determine, according to the identifier information of the terminal device, one or more of a maximum aggregation level supported by the terminal device, time slot information, and a first offset, The at least one control channel element set; or
  • the processor 710 is configured to determine, according to a random number function having at least one variable, the at least one control channel unit set corresponding to the terminal device, where the at least one variable includes identifier information of the terminal device, the terminal At least one of a maximum aggregation level, slot information, and a first offset supported by the device.
  • the determining, by the processor 710, the control channel candidate set of the terminal device includes:
  • the processor 710 is configured to use one or more of an index of the control channel resource set, identifier information of the terminal device, a maximum aggregation level supported by the terminal device, time slot information, and a first offset. Determining, by the terminal device, the at least one control channel unit set; or
  • the processor 710 is configured to determine, according to a random number function having at least one variable, the at least one control channel element set corresponding to the terminal device, where the at least one variable includes an index of the control channel resource set, At least one of identification information of the terminal device, a maximum aggregation level supported by the terminal device, time slot information, and a first offset.
  • the processor 710 is further configured to: determine, according to the first configuration information, the control channel candidate set included in the at least one control channel element set, where the first configuration information is first notified by using high layer signaling. And determining, by the terminal device, the control channel candidate set included in the at least one control channel element set according to the identification information of the terminal device and/or the group identifier of the terminal device group to which the terminal device belongs.
  • the maximum aggregation level supported by the terminal device is a maximum aggregation level that the terminal device can support, or the access network device or the terminal device is within the range of the capability.
  • the maximum aggregation level configured.
  • FIG. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
  • the terminal device 800 includes:
  • the processor 810 is configured to determine a control channel candidate set corresponding to the terminal device, where the control channel candidate set includes at least one control channel candidate, and the at least one control channel candidate includes at least one control channel unit, where the control The channel candidate set is included in the at least one control channel element set, where the control channel element set includes a number of control channel units greater than or equal to a number of control channel units corresponding to a maximum aggregation level supported by the terminal device; the control channel unit set The control channel candidates belonging to the control channel candidate set have at least two aggregation levels or all aggregation levels under a maximum aggregation level supported by the terminal device;
  • the transceiver 820 is configured to detect a control channel candidate in the control channel candidate set and receive control information.
  • each of the at least one control channel candidate unit set includes multiple control channel candidates, and some of the multiple control channel candidates belong to the control channel candidate set.
  • the number of control channel candidates in the control channel candidate set is less than or equal to a maximum number of blind detections supported by the terminal device.
  • the number of control channel candidates of the first aggregation level in the control channel candidate set is less than or equal to the maximum number of blind detections supported by the terminal device for the first aggregation level.
  • the processor 810 is further configured to determine, in the at least one control channel resource set, a control channel candidate set of the terminal device, where the at least one control channel resource set includes multiple control channel element sets.
  • the determining, by the processor 810, the control channel candidate set of the terminal device includes:
  • the processor 810 is configured to determine, according to the identifier information of the terminal device, one or more of a maximum aggregation level supported by the terminal device, time slot information, and a first offset, The at least one control channel element set; or
  • the processor 810 is configured to determine, according to a random number function having at least one variable, the at least one control channel unit set corresponding to the terminal device, where the at least one variable includes identifier information of the terminal device, the terminal At least one of a maximum aggregation level, slot information, and a first offset supported by the device.
  • the determining, by the processor 810, the control channel candidate set of the terminal device includes:
  • the processor 810 is configured to use one or more of an index of the control channel resource set, identifier information of the terminal device, a maximum aggregation level supported by the terminal device, time slot information, and a first offset. Determining, by the terminal device, the at least one control channel unit set; or
  • the processor 810 is configured to determine, according to a random number function having at least one variable, the at least one control channel element set corresponding to the terminal device, where the at least one variable includes an index of the control channel resource set, At least one of identification information of the terminal device, a maximum aggregation level supported by the terminal device, time slot information, and a first offset.
  • processor 810 is further configured to:
  • the control channel candidate set included in the at least one control channel element set Determining, according to the identification information of the terminal device and/or the group identifier of the terminal device group to which the terminal device belongs, the control channel candidate set included in the at least one control channel element set.
  • the maximum aggregation level supported by the terminal device is a maximum aggregation level that the terminal device can support, or the access network device or the terminal device is within the range of the capability.
  • the maximum aggregation level configured.
  • the memory in each of the above embodiments may include a volatile memory, such as a random-access memory (RAM); the memory may also include a non-volatile memory, such as a fast A flash memory, a hard disk drive (HDD), or a solid-state drive (SSD); the memory may further include a combination of the above types of memories.
  • RAM random-access memory
  • non-volatile memory such as a fast A flash memory, a hard disk drive (HDD), or a solid-state drive (SSD)
  • the memory may further include a combination of the above types of memories.
  • the processor in each of the above embodiments may be a central processing unit (CPU), a network processor (NP), or a combination of a CPU and an NP.
  • the processor may further include a hardware chip.
  • the hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof.
  • the PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general array logic (GAL), or any combination thereof.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the embodiments of the present invention, or the part contributing to the prior art or the part of the technical solution, may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

Abstract

本发明实施例提供了一种控制信息的发送方法、接收方法及设备。该发送方法包括：接入网设备确定终端设备的控制信道候选集合，其中，所述控制信道候选集合包括至少一个控制信道候选，所述至少一个控制信道候选包括至少一个控制信道单元，所述控制信道候选集合包含在至少一个控制信道单元集合内，所述控制信道单元集合包括的控制信道单元数量大于或等于所述终端设备支持的最大聚合级别对应的控制信道单元数量；所述接入网设备利用所述控制信道候选集合中的至少一个控制信道候选，向所述终端设备发送控制信息。本发明控制信息发送方法能够满足新一代无线通信系统的要求。

Description

控制信息的发送和接收方法、接入网设备和终端设备 技术领域
本发明涉及通信领域，尤其涉及控制信息的发送和接收方法、接入网设备和终端设备。
背景技术
在第五代无线接入系统标准新空口(New Radio，NR)中，频域上的基本单位为一个子载波，时域上的基本单位为一个正交频分复用(Orthogonal Frequency Division Multiplexing，OFDM)符号。资源元素(Resource Element，RE)为最小的的物理资源，包含一个OFDM符号内的一个子载波。
在5G NR中，时域的基本调度单位为时隙(slot)或迷你时隙(mini-slot)，这里为了简便统称为时隙。时隙由若干个OFDM符号组成。如图1所示，时隙可分为控制区域和数据区域，下行控制信道(Physical Downlink Control Channel，PDCCH)携带下行控制信息(Downlink Control Information，DCI)在控制区域中传输。
在LTE系统中，用户特定搜索空间是用户设备的PDCCH候选集合，其用于承载用户专有的下行控制信息。PDCCH候选集合包含了四种不同聚合级别(Aggregation Level)的下行控制信道，每种聚合级别对应的PDCCH候选子集合的起始位置是独立计算的。在确定的子帧(subframe)上，任意一种聚合级别的下行控制信道的起始位置是由用户设备(User Equipment，UE)标识ID确定的，不同聚合级别的下行控制信道的候选集合的起始位置没有直接的关联性。
目前在5G系统的讨论中提出了一种确定PDCCH搜索空间的方案，系统的下行控制区域包含一个或多个下行控制信道资源集合(downlink control channel resource set)。在一个下行控制信道资源集合中，不同聚合级别的PDCCH候选是嵌套地设计的。例如，一个较低聚合级别的下行控制信道的资源是一个较高聚合级别的下行控制信道的资源的真子集。对于一个UE也可能在多个下行控制信道资源集合上搜索下行控制信息。然而，现有的确定PDCCH搜索空间的方法都无法满足上述设计。
发明内容
本发明实施例提供了一种控制信息的发送方法、控制信息的接收方法、接入网设备和终端设备，能够在不同聚合级别的PDCCH候选是嵌套地设计的条件下确定PDCCH候选集合。
第一方面，提供了一种控制信息的发送方法，包括：
接入网设备确定终端设备的控制信道候选集合，其中，所述控制信道候选集合包括至少一个控制信道候选，所述至少一个控制信道候选包括至少一个控制信道单元，所述控制信道候选集合包含在至少一个控制信道单元集合内，所述控制信道单元集合包括的控制信道单元数量大于或等于所述终端设备支持的最大聚合级别对应的控制信道单元数量；所述控制信道单元集合内属于所述控制信道候选集合的所述控制信道候选具有至少两个聚合级别或具有所述终端设备支持的最大聚合级别下的所有聚合级别； 和
所述接入网设备利用所述控制信道候选集合中的至少一个控制信道候选，向所述终端设备发送控制信息。
第二方面，提供了一种控制信息的接收方法，包括：
终端设备确定所述终端设备对应的控制信道候选集合，其中，所述控制信道候选集合包括至少一个控制信道候选，所述至少一个控制信道候选包括至少一个控制信道单元，所述控制信道候选集合包含在至少一个控制信道单元集合内，所述控制信道单元集合包括的控制信道单元数量大于或等于所述终端设备支持的最大聚合级别对应的控制信道单元数量；所述控制信道单元集合内属于所述控制信道候选集合的所述控制信道候选具有至少两个聚合级别或具有所述终端设备支持的最大聚合级别下的所有聚合级别；
所述终端设备对所述控制信道候选集合中的控制信道候选进行检测并接收控制信息。
第三方面，提供了一种接入网设备，包括：
处理器，用于确定终端设备的控制信道候选集合，其中，所述控制信道候选集合包括至少一个控制信道候选，所述至少一个控制信道候选包括至少一个控制信道单元，所述控制信道候选集合包含在至少一个控制信道单元集合内，所述控制信道单元集合包括的控制信道单元数量大于或等于所述终端设备支持的最大聚合级别对应的控制信道单元数量；所述控制信道单元集合内属于所述控制信道候选集合的所述控制信道候选具有至少两个聚合级别或具有所述终端设备支持的最大聚合级别下的所有聚合级别；和
收发器，用于所述接入网设备利用所述控制信道候选集合中的至少一个控制信道候选，向所述终端设备发送控制信息。
第四方面，提供了一种终端设备，包括：
处理器，用于确定所述终端设备对应的控制信道候选集合，其中，所述控制信道候选集合包括至少一个控制信道候选，所述至少一个控制信道候选包括至少一个控制信道单元，所述控制信道候选集合包含在至少一个控制信道单元集合内，所述控制信道单元集合包括的控制信道单元数量大于或等于所述终端设备支持的最大聚合级别对应的控制信道单元数量；所述控制信道单元集合内属于所述控制信道候选集合的所述控制信道候选具有至少两个聚合级别或具有所述终端设备支持的最大聚合级别下的所有聚合级别；和
收发器，用于对所述控制信道候选集合中的控制信道候选进行检测并接收控制信息。
以上各方面提供的控制信息的发送方法、控制信息的接收方法、接入网设备和终端设备，能够在不同聚合级别的PDCCH候选是嵌套地设计的条件下确定PDCCH候选集合，能够满足下一代无线通信系统的要求。
附图说明
图1是时隙的结构示意图；
图2是应用于本发明实施例无线通信系统的示意图；
图3a是根据本发明实施例的控制信息的发送方法的示意性流程图；
图3b是根据本发明实施例的控制信息的发送方法的一种实现方式的示意性流程图。
图3c是根据本发明实施例的控制信息的发送方法的另一种实现方式的示意性流程图。
图4a是根据本发明实施例的一种实现方式的控制信道结构示意图。
图4b是根据本发明实施例的一种实现方式的控制信道结构示意图。
图4c是根据本发明实施例的一种实现方式的控制信道结构示意图。
图4d是根据本发明实施例的一种实现方式的控制信道结构示意图。
图4e是根据本发明实施例的一种实现方式的控制信道结构示意图。
图4f是根据本发明实施例的一种实现方式的控制信道结构示意图。
图4g是根据本发明实施例的一种实现方式的控制信道结构示意图。
图5是根据本发明实施例中确定CCE集合的一种实现方式的逻辑结构示意图。
图6是根据本发明实施例的控制信息的接收方法600的示意性流程图。
图7是根据本发明实施例的一种接入网设备的结构示意图。
图8是根据本发明实施例的一种终端设备的结构示意图。
具体实施方式
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描述。
应理解，本发明实施例的的技术方案可以应用于各种通信系统，例如：无线保真(wifi)、全球微波互联接入(Worldwide Interoperability for Microwave Access，WiMAX)、全球移动通讯(Global System of Mobile communication，GSM)系统、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进(Long Term Evolution，LTE)系统、先进的长期演进(Advanced long term evolution，LTE-A)系统、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)、5G系统、以及第三代合作伙伴计划(The 3rd Generation Partnership Project，3GPP)相关的蜂窝系统等，本发明实施例并不限定，但为描述方便，本发明实施例将以LTE网络为例进行说明。
本发明实施例可以用于不同的制式的无线网络。接入网设备在不同的系统中可以为不同的实体设备。例如，长期演进(Long Term Evolution，LTE)和LTE-A中接入网设备包括演进型基站(eNodeB，eNB)，宽带码分多址(Wideband Code Division Multiple Access，WCDMA)中的接入网设备包括无线网络控制器(Radio Network Controller，RNC)和/或NodeB。类似地，全球微波互联接入(Worldwide Interoperability for Microwave Access，WiMax)等其它无线网络也可以使用与本发明实施例类似的方案。
还应理解，在本发明实施例中，终端设备也可称之为用户设备(UE，User Equipment)、移动台(MS，Mobile Station)、移动终端(Mobile Terminal)等，该终端可以经无线接入网(RAN，Radio Access Network)与一个或多个核心网进行通信，例如，终端可以是移动电话(或称为“蜂窝”电话)、具有通信功能的计算机等，例如，终端还可以 是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置。
本发明实施例提供的方法和装置，可以应用于终端设备或网络设备，该终端设备或网络设备包括硬件层、运行在硬件层之上的操作系统层，以及运行在操作系统层上的应用层。该硬件层包括中央处理器(central processing unit，CPU)、内存管理单元(memory management unit，MMU)和内存(也称为主存)等硬件。该操作系统可以是任意一种或多种通过进程(process)实现业务处理的计算机操作系统，例如，Linux操作系统、Unix操作系统、Android操作系统、iOS操作系统或windows操作系统等。该应用层包含浏览器、通讯录、文字处理软件、以及即时通信软件等应用。并且，在本发明实施例中，传输信号的方法的执行主体的具体结构，本发明实施例并未特别限定，只要能够通过运行记录有本发明实施例的传输信号的方法的代码的程序，以根据本发明实施例的传输信号的方法进行通信即可，例如，本发明实施例的无线通信的方法的执行主体可以是终端设备或网络设备，或者，是终端设备或网络设备中能够调用程序并执行程序的功能模块。
此外，本发明实施例的各个方面或特征可以实现成方法、装置或使用标准编程和/或工程技术的制品。本申请中使用的术语“制品”涵盖可从任何计算机可读器件、载体或介质访问的计算机程序。例如，计算机可读介质可以包括，但不限于:磁存储器件(例如，硬盘、软盘或磁带等)，光盘(例如，压缩盘(compact disc，CD)、数字通用盘(digital versatile disc，DVD)等)，智能卡和闪存器件(例如，可擦写可编程只读存储器(erasable programmable read-only memory，EPROM)、卡、棒或钥匙驱动器等)。另外，本文描述的各种存储介质可代表用于存储信息的一个或多个设备和/或其它机器可读介质。术语“机器可读介质”可包括但不限于，无线信道和能够存储、包含和/或承载指令和/或数据的各种其它介质。
应理解，在本发明实施例中，术语“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系。例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。本发明实施例中的“第一”、“第二”只是用于区分，不代表先后或大小的含义。
图2是应用于本发明实施例无线通信系统的示意图。如图2所示，该无线通信系统100包括接入网设备102，接入网设备102可包括1个天线或多个天线例如，天线104、106、108、110、112和114。另外，接入网设备102可附加地包括发射机链和接收机链，本领域普通技术人员可以理解，它们均可包括与信号发送和接收相关的多个部件(例如处理器、调制器、复用器、解调器、解复用器或天线等)。网络设备102可以与多个终端设备(例如终端设备116和终端设备122)通信。然而，可以理解，网络设备102可以与类似于终端设备116或终端设备122的任意数目的终端设备通信。
如图2所示，终端设备116与天线112和114通信，其中天线112和114通过前向链路(也称为下行链路)118向终端设备116发送信息，并通过反向链路(也称为上行链路)120从终端设备116接收信息。此外，终端设备122与天线104和106通信，其中天线104和106通过前向链路124向终端设备122发送信息，并通过反向链路126从终端设备122接收信息。
图3a是根据本发明实施例的控制信息的发送方法300的示意性流程图。如图3a 所示，方法300包括如下内容。
310、接入网设备确定终端设备的控制信道候选集合(control channel candidate set)。
所述控制信道候选集合包括至少一个控制信道候选(control channel candidate)，所述至少一个控制信道候选包括至少一个控制信道单元(control channel element，CCE)，所述控制信道候选集合包含在至少一个控制信道单元集合(control channel element set，CCE set)内，所述控制信道单元集合包括的控制信道单元数量大于或等于所述终端设备支持的最大聚合级别对应的控制信道单元数量；所述控制信道单元集合内属于所述控制信道候选集合的所述控制信道候选具有至少两个聚合级别或具有所述终端设备支持的最大聚合级别下的所有聚合级别。
320、所述接入网设备利用所述控制信道候选集合中的至少一个控制信道候选，向所述终端设备发送控制信息。
进一步参照图4a，图4a是根据本发明实施例的一种实现方式的控制信道结构示意图。接入网设备102与终端设备116之间的下行链路上的下行控制信道410包括多个控制信道单元420。每个CCE 420具有索引(index)，例如CCE-1的索引为1，CCE-2的索引为2。该多个CCE 420可以具有相同的大小，即占用相同数量的时频资源。考虑到CCE 420占用时频资源的方式可以不限于一种，本发明实施例中的CCE 420可以为逻辑单元，CCE 420通过资源映射的方式映射到实际的时频资源上。例如，CCE 420可以通过集中式(localized)或分布式(distributed)的方式映射到时频资源上，或者CCE 420以其占用的全部或是部分数量的资源元素进行先时域再频域的方式映射到时频资源上，或者CCE 420以其占用的全部或是部分数量的资源元素进行先频域再时域的方式映射到时频资源上。
作为一种可选的控制信道结构，控制信道可以被划分成一个或是多个控制信道区域。如果控制信道被划分成一个控制信道区域，控制信道单元CCE可以在整个区域内统一编号。如果控制信道被划分成多个控制信道区域，控制信道单元CCE可以在每个控制信道区域内进行独立编号或是多个控制信道区域联合编号，具体划分成多个空置信道区域的方法可以是不同时域符号对应不同控制信道区域，也包括前面2个符号对应一个控制信道区域，第三个符号对应另外的控制信道区域；也可以是不同频域区域对应不同控制信道区域，或是时频域联合组合形成不同控制信道区域。如图4a所示，控制信道410可以在不同时域符号上被划分为多个控制信道区域，例如控制信道区域411-413。相应的，控制信道410包括多个与所述区域411-413对应的控制信道资源集合431-433，每个控制信道资源集合包括多个CCE 420，且该控制信道资源集合所包含的CCE 420位于对应的控制信道区域内。每个控制信道区域411-413可以具有控制信道区域索引。例如控制信道区域411-413的索引分别为1-3。
如图4a所示，在不同的控制信道资源集合中，CCE 420的CCE索引可以在每个控制信道资源集合内单独编号的。作为另一种可选的控制信道结构，如图4b所示，在不同的控制信道资源集合中，CCE 420的CCE索引也可以是连续编号的。
如图4c所示，控制信道候选具有多种聚合级别(Aggregation Level，AL)，例如，AL可以等于1,2,4,或8。聚合级别为L的控制信道候选由L个CCE组成，L为正整数，例如为1,2,4,或8。接入网设备102能支持最大聚合级别为L max-ran，例如L max-ran＝8。所 述终端设备支持的最大聚合级别为L max-ue，例如L max-ue＝8。L max-ran与L max-ue可以相同也可以不同。其中，所述终端设备支持的最大聚合级别为所述终端自身能力所能支持的最大聚合级别、或在所述自身能力范围内由所述接入网设备或自身配置的能够支持的最大聚合级别。具体举例而言，虽然终端设备自身能力可以支持最大聚合级别为8，但是由于当前该终端设备信道状况、当前所述接入网设备负载等原因，接入网设备或终端设备自身可以为将当前支持的最大聚合级别配置为L max-ue＝4。即，该终端设备支持的聚合级别为AL＝1,2,4。应当明确，上述取值均为举例，本发明并不限制聚合级别的具体取值范围。
对于每一种聚合级别，控制信道候选的数量为一个或多个。即，每种聚合级别下的一个或多个控制信道候选即为终端设备在该聚合级别下的搜索空间。该终端设备支持的所有聚合级别下的控制信道候选组成控制信道候选集合，即该终端设备的全部搜索空间。如图4d所示，假设终端设备支持的最大聚合级别为8。对于AL＝1，控制信道候选的数量可以为8个；对于AL＝2，控制信道候选的数量可以为4；对于AL＝4，控制信道候选的数量可以为2；对于AL＝8，控制信道候选的数量可以为1。也就是说，该终端设备需对上述15个控制信道候选进行盲检测。终端设备在其支持的每种聚合级别下控制信道候选的数量之和(即控制信道候选集合内控制信道候选的数量)应小于或等于所述终端设备允许的最大盲检测次数。应当知道，前述每种聚合级别下控制信道候选的数量仅为举例，本发明对此并无限制。
本发明实施例中的搜索空间是嵌套式设计的。如图4e所示，例如，在本示例中的终端设备支持的最大聚合级别为L max-ue＝8。该终端设备具有1个AL＝8的控制信道候选#8-1，2个AL＝4的控制信道候选#4-1和#4-2，2个AL＝2的控制信道候选#2-1和#2-2，以及4个AL＝1的控制信道候选#1-1至#1-4。如果控制信道候选#8-1占用CCE m至CCE m+7，则该终端设备支持的最大聚合级别下的至少一个聚合级别对应的部分或全部控制信道候选由该CCE m至CCE m+7中的至少一个构成。例如，控制信道候选#4-1由CCE m至CCE m+3构成，控制信道候选#4-2由CCE m+4至CCE m+7构成。控制信道候选#2-1由CCE m至CCE m+1构成；控制信道候选#2-2由CCE m+3至CCE m+4构成。控制信道候选#1-1由CCE m+1构成；控制信道候选#1-2由CCE m+3构成；控制信道候选#1-3由CCE m+5构成；控制信道候选#1-4由CCE m+7构成。应当明确，图4e仅为示例，终端设备所包括控制信道候选可以不同。
基于如图4e所示的嵌套式的搜索空间设计，本发明实施例中，定义该终端设备支持的最大聚合级别的一个控制信道候选所占用的CCE为一个CCE集合，并且该终端设备的控制信道候选集合包含在至少一个CCE集合内。如图4e的一种实现方式中，该终端设备的控制信道候选集合包含在一个CCE集合内，即CCE m至CCE m+7。该控制信道单元集合内属于所述控制信道候选集合的所述控制信道候选具有至少两个聚合级别或具有所述终端设备支持的最大聚合级别下的所有聚合级别。可选的，一个控制信道候选集合单元包括的CCE数目可以是该终端设备支持的最大聚合级别的一个控制信道候选所占用的CCE的正整数倍。
如图4f和4g所示的另外的实现方式中，该终端设备的控制信道候选集合包含在多个CCE集合内。具体地，该终端设备支持的最大聚合级别(例如L max-ue＝8)对应的 控制信道候选的个数为3个，该终端的控制信道候选集合包含在3个CCE集合内。如图4f所示，3个CCE集合可以包括连续的CCE。例如，CCE集合A占用CCE m至CCE m+7，CCE集合B占用CCE m+8至CCE m+15，CCE集合C占用CCE m+16至CCE m+23，具体的可以先确定第一个CCE集合A的起始CCE位置，然后根据CCE集合A、B和C包括的CCE个数确定每个CCE集合包括的具体的CCE。如图4g所示，3个CCE集合所包括的CCE是独立确定的，包括每个CCE集合的起始CCE位置可以是独立确定的，比如可以根据这个CCE集合所属于的控制信道区域索引相关。例如，CCE集合A占用CCE m至CCE m+7，CCE集合B占用CCE m+i至CCE m+i+7，CCE集合C占用CCE m+j至CCE m+j+7。其中，m为自然数或正整数，i和j为不同的正整数。另外，3个CCE集合所包括的CCE也可为非连续的，具体的可以先确定第一个CCE集合A的起始CCE位置，然后根据CCE集合A、B和C起始CCE关系和/或CCE集合A、B和C包括的CCE个数或是偏移量等确定。每个CCE集合中所包含的属于所述终端设备的控制信道候选集合的控制信道候选与图4e类似，这里不再赘述。
可选的，该终端设备的控制信道候选集合包含在多个CCE集合内时，多个CCE集合的分布可以包括：多个CCE集合可以属于同一个控制信道资源集合；多个CCE集合可以属于不同控制信道资源集合，具体的每个CCE集合和控制信道资源集合要有明确的对应关系，或是预定义的，或是系统配置给终端设备的。
无论终端设备的控制信道候选集合包含在一个或是多个CCE集合是属于同一个控制信道资源集合还是不同的控制信道资源集合，所述的一个或是多个CCE集合可以映射到相同的或是不同的时频资源上。当终端设备被通知其控制信道对应的潜在时频资源时，该终端设备可以根据其控制信道候选集合包括的一个或是多个CCE集合，以及所述的一个或是多个CCE集合和控制信道资源集合的映射关系确定终端设备的所有控制信道候选集合。
可选的，如图4e所示，所述至少一个控制信道候选单元集合中的每一个包括多个控制信道候选，所述多个控制信道候选中的部分控制信道候选属于所述控制信道候选集合。也就是说，该CCE集合内，1个AL＝8的控制信道候选#8-1，2个AL＝4的控制信道候选#4-1和#4-2，2个AL＝2的控制信道候选#2-1和#2-2，以及4个AL＝1的控制信道候选#1-1至#1-4属于该终端设备的控制信道候选集合。而其余的控制信道候选并不包含在该终端的控制信道候选集合内。应当明确，图4e仅为示例，终端设备所包括控制信道候选可以不同。通过选择部分的控制信道候选属于所述控制信道候选集合是为了降低不同终端设备传输控制信道的冲突概率，在满足相同盲检测次数的情况下，可以通过多个CCE集合且每个CCE集中采用部分的控制信道候选集合来降低不同终端设备传输控制信道的冲突概率。
可选的，所述控制信道候选集合中控制信道候选的数量小于或等于所述终端设备支持的盲检测最大次数；和/或，所述控制信道候选集合中第一聚合级别的控制信道候选的数量小于或等于所述终端设备支持的针对所述第一聚合级别的盲检测最大次数。
可选的，在一种可能的实现方式中，如图3b所示，步骤310中的该接入网设备确定终端设备的控制信道候选集合具体包括：
312、所述接入网设备确定所述终端设备对应的所述至少一个控制信道单元集合；
313、所述接入网设备在所述至少一个控制信道单元集合内确定所述控制信道候选集合。
可选的，在另一种可能的实现方式中，如图3c所示，步骤310中的该接入网设备确定终端设备的控制信道候选集合具体包括：
321、所述接入网设备在至少一个控制信道资源集合内确定终端设备的控制信道候选集合，所述至少一个控制信道资源集合包括多个控制信道单元集合。
322、所述接入网设备确定所述终端设备对应的所述至少一个控制信道单元集合。
323、所述接入网设备在所述至少一个控制信道单元集合内确定所述控制信道候选集合。
在步骤312和步骤322中，所述接入网设备确定所述终端设备对应的所述至少一个控制信道单元集合具体可以采用以下方式。
方式一：所述接入网设备根据所述终端设备的标识信息、所述终端设备所支持的最大聚合级别、时隙信息、控制信道的符号编号信息和第一偏移量中的一个或多个，确定所述终端设备对应的所述至少一个控制信道单元集合；或者，所述接入网设备根据具有至少一个变量的随机数函数确定所述终端设备对应的所述至少一个控制信道单元集合，其中所述至少一个变量包括所述终端设备的标识信息、所述终端设备所支持的最大聚合级别、时隙信息和第一偏移量中的至少一个。
如图5所示，接入网设备可以利用函数或查找表，并将所述终端设备的标识信息、所述终端设备所支持的最大聚合级别、时隙信息和第一偏移量中的一个或多个作为函数的变量或查找表的输入，得到所述终端设备对应的一个或各个CCE集合内代表该CCE集合的CCE索引。各CCE集合内代表该CCE集合的CCE索引可以是该CCE集合内索引值最低或最高的索引。例如，当多个CCE集合是如图4f所示连续的CCE集合时，可以得到的代表3个CCE集合的CCE索引CCE m、CCE m+8，CCE m+16，也可以仅得到代表首个CCE集合的CCE索引CCE m。又例如，当多个CCE集合是如图4g所示的不连续的CCE集合时，可以得到的代表3个CCE集合的CCE索引CCE m、CCE m+i、CCE m+j。其中，i和j为第一偏移量。该第一偏移量可以是在该接入网设备和该终端设备中预先设置好的，也可以是由该接入网设备配置并通过信令通知给该终端设备的。
该终端设备的标识信息可以为该接入网设备为该终端设备分配的临时标识信息。利用该终端设备的标识信息作为输入可以使得至少两个不同的终端设备的搜索空间的起始位置不同。该时隙信息可以为时隙号和/或迷你时隙号。利用该时隙信息作为输入可以使得终端设备在至少两个不同时隙或迷你时隙上的搜索空间的起始位置不同。该函数可以为随机数函数，例如哈希函数。
方式二：所述接入网设备根据所述控制信道资源集合的索引、所述终端设备的标识信息、所述终端设备所支持的最大聚合级别、控制信道资源集合的符号编号信息、时隙信息和第一偏移量中的一个或多个，确定所述终端设备对应的所述至少一个控制信道单元集合；或，所述接入网设备根据具有至少一个变量的随机数函数确定所述终端设备对应的所述至少一个控制信道单元集合，其中所述至少一个变量包括所述控制信道资源集合的索引、所述终端设备的标识信息、所述终端设备所支持的最大聚合级 别、时隙信息和第一偏移量中的至少一个。
如图5所示，当控制信道内的CCE被划分为多个控制信道资源集合时，方式二在方式一的基础上进一步采用所述控制信道资源集合的索引作为函数的变量或查找表的输入，得到所述终端设备对应的各CCE集合内代表该CCE集合的CCE索引。
在步骤313和步骤323中，所述接入网设备在所述至少一个控制信道单元集合内确定所述控制信道候选集合具体包括以下方式。
方式一：所述接入网设备根据第一配置信息确定所述至少一个控制信道单元集合中包含的所述控制信道候选集合，所述第一配置信息在先通过高层信令通知所述终端设备。
第一配置信息可以为第二偏移量。例如，在一种实现方式中，所述第一配置信息为第二偏移量k，k＝0或1。
方式二：所述接入网设备根据所述终端设备的标识信息和/或所述终端设备所属的终端设备组的组标识确定所述至少一个控制信道单元集合中包含的所述控制信道候选集合。
例如，所述终端设备所属的终端设备组的组标识为k，k＝0或1。
对于终端设备支持的最大聚合级别的控制信道候选，例如图4e、图4f和图4g所示的AL＝8，各CCE集合内代表该CCE集合的CCE索引即为AL＝8的各控制信道候选的索引；
对于AL＝4的控制信道候选，以图4e为例，当k＝0时，控制信道候选为#4-1，其索引为CCE m。当k＝1时，控制信道候选为#4-2，其索引为CCE m+4。
对于AL＝2的控制信道候选，仍以图4e为例，当k＝0时，控制信道候选为#2-1和#2-2，其索引为CCE m和CCE m+4。当k＝1时，控制信道候选为#2-3和#2-4，其索引为CCE m+2和CCE m+6。
对于AL＝1的控制信道候选，仍以图4e为例，当k＝0时，控制信道候选为#1-1、#1-2、#1-3和#1-4，其索引为CCE m+1、CCE m+3、CCE m+5和CCE m+7。当k＝1时，控制信道候选为#1-5、#1-6、#1-7和#1-8，其索引为CCE m、CCE m+2、CCE m+4和CCE m+6。
在前述实施例中，当控制信道被分为多个控制信道资源集合，且各控制信道资源集合内的CCE单独编号时，CCE索引可能不能唯一确定搜索空间的起始位置。可选的，可以使用控制信道资源集合的索引和CCE索引的组合来标识前述实施例中的CCE集合和控制信道候选。
图6是根据本发明实施例的控制信息的接收方法600的示意性流程图。如图3a所示，该控制信道接收方法600与前述发送方法相对应的方法，因此在前述发送方法中已经描述的内容也适用于本实施例的接收方法，这里不再赘述。该方法600包括如下内容。
610、终端设备确定所述终端设备对应的控制信道候选集合。
与前述实施例的发送方法类似，所述控制信道候选集合包括至少一个控制信道候选，所述至少一个控制信道候选包括至少一个控制信道单元，所述控制信道候选集合包含在至少一个控制信道单元集合内，所述控制信道单元集合包括的控制信道单元数量大 于或等于所述终端设备支持的最大聚合级别对应的控制信道单元数量；所述控制信道单元集合内属于所述控制信道候选集合的所述控制信道候选具有至少两个聚合级别或具有所述终端设备支持的最大聚合级别下的所有聚合级别。
620、所述终端设备对所述控制信道候选集合中的控制信道候选进行检测并接收控制信息。
可选的，该至少一个控制信道候选单元集合中的每一个包括多个控制信道候选，所述多个控制信道候选中的部分控制信道候选属于所述控制信道候选集合。
可选的，所述控制信道候选集合中控制信道候选的数量小于或等于所述终端设备支持的盲检测最大次数；和/或，所述控制信道候选集合中第一聚合级别的控制信道候选的数量小于或等于所述终端设备支持的针对所述第一聚合级别的盲检测最大次数。
可选的，该方法还包括：还包括：所述终端设备在至少一个控制信道资源集合内确定终端设备的控制信道候选集合，所述至少一个控制信道资源集合包括多个控制信道单元集合。
可选的，所述确定终端设备的控制信道候选集合包括：
所述终端设备根据所述终端设备的标识信息、所述终端设备所支持的最大聚合级别、时隙信息和第一偏移量中的一个或多个，确定所述终端设备对应的所述至少一个控制信道单元集合；或
所述终端设备根据具有至少一个变量的随机数函数确定所述终端设备对应的所述至少一个控制信道单元集合，其中所述至少一个变量包括所述终端设备的标识信息、所述终端设备所支持的最大聚合级别、时隙信息和第一偏移量中的至少一个。
或者，可选的，所述确定终端设备的控制信道候选集合包括：
所述终端设备根据所述控制信道资源集合的索引、所述终端设备的标识信息、所述终端设备所支持的最大聚合级别、时隙信息和第一偏移量中的一个或多个，确定所述终端设备对应的所述至少一个控制信道单元集合；或
所述终端设备根据具有至少一个变量的随机数函数确定所述终端设备对应的所述至少一个控制信道单元集合，其中所述至少一个变量包括所述控制信道资源集合的索引、所述终端设备的标识信息、所述终端设备所支持的最大聚合级别、时隙信息和第一偏移量中的至少一个。
可选的，所述确定终端设备的控制信道候选集合还包括：
所述终端设备根据第一配置信息确定所述至少一个控制信道单元集合中包含的所述控制信道候选集合，所述第一配置信息在先通过高层信令通知给所述终端设备；或
所述终端设备根据所述终端设备的标识信息和/或所述终端设备所属的终端设备组的组标识确定所述至少一个控制信道单元集合中包含的所述控制信道候选集合。
可选的，所述终端设备支持的最大聚合级别为所述终端设备自身能力所能支持的最大聚合级别；或者，在所述自身能力范围内由所述接入网设备或由所述终端设备配置的最大聚合级别。
图7是根据本发明实施例的一种接入网设备的结构示意图。该接入网设备700包括：
处理器710，用于确定终端设备的控制信道候选集合，其中，所述控制信道候选集 合包括至少一个控制信道候选，所述至少一个控制信道候选包括至少一个控制信道单元，所述控制信道候选集合包含在至少一个控制信道单元集合内，所述控制信道单元集合包括的控制信道单元数量大于或等于所述终端设备支持的最大聚合级别对应的控制信道单元数量；所述控制信道单元集合内属于所述控制信道候选集合的所述控制信道候选具有至少两个聚合级别或具有所述终端设备支持的最大聚合级别下的所有聚合级别；和
收发器720，用于所述接入网设备利用所述控制信道候选集合中的至少一个控制信道候选，向所述终端设备发送控制信息。
可选的，所述至少一个控制信道候选单元集合中的每一个包括多个控制信道候选，所述多个控制信道候选中的部分控制信道候选属于所述控制信道候选集合。
可选的，所述控制信道候选集合中控制信道候选的数量小于或等于所述终端设备支持的盲检测最大次数；和/或
所述控制信道候选集合中第一聚合级别的控制信道候选的数量小于或等于所述终端设备支持的针对所述第一聚合级别的盲检测最大次数。
可选的，所述处理器710还用于在至少一个控制信道资源集合内确定终端设备的控制信道候选集合，所述至少一个控制信道资源集合包括多个控制信道单元集合。
可选的，所述处理器710用于确定终端设备的控制信道候选集合包括：
所述处理器710用于根据所述终端设备的标识信息、所述终端设备所支持的最大聚合级别、时隙信息和第一偏移量中的一个或多个，确定所述终端设备对应的所述至少一个控制信道单元集合；或
所述处理器710用于根据具有至少一个变量的随机数函数确定所述终端设备对应的所述至少一个控制信道单元集合，其中所述至少一个变量包括所述终端设备的标识信息、所述终端设备所支持的最大聚合级别、时隙信息和第一偏移量中的至少一个。
可选的，所述处理器710用于确定终端设备的控制信道候选集合包括：
所述处理器710用于根据所述控制信道资源集合的索引、所述终端设备的标识信息、所述终端设备所支持的最大聚合级别、时隙信息和第一偏移量中的一个或多个，确定所述终端设备对应的所述至少一个控制信道单元集合；或
所述处理器710用于根据具有至少一个变量的随机数函数确定所述终端设备对应的所述至少一个控制信道单元集合，其中所述至少一个变量包括所述控制信道资源集合的索引、所述终端设备的标识信息、所述终端设备所支持的最大聚合级别、时隙信息和第一偏移量中的至少一个。
可选的，所述处理器710还用于：根据第一配置信息确定所述至少一个控制信道单元集合中包含的所述控制信道候选集合，所述第一配置信息在先通过高层信令通知给所述终端设备；或，根据所述终端设备的标识信息和/或所述终端设备所属的终端设备组的组标识确定所述至少一个控制信道单元集合中包含的所述控制信道候选集合。
可选的，所述终端设备支持的最大聚合级别为所述终端设备自身能力所能支持的最大聚合级别；或者，在所述自身能力范围内由所述接入网设备或由所述终端设备配置的最大聚合级别。
图8是根据本发明实施例的一种终端设备的结构示意图。该终端设备800包括：
处理器810，用于确定所述终端设备对应的控制信道候选集合，其中，所述控制信道候选集合包括至少一个控制信道候选，所述至少一个控制信道候选包括至少一个控制信道单元，所述控制信道候选集合包含在至少一个控制信道单元集合内，所述控制信道单元集合包括的控制信道单元数量大于或等于所述终端设备支持的最大聚合级别对应的控制信道单元数量；所述控制信道单元集合内属于所述控制信道候选集合的所述控制信道候选具有至少两个聚合级别或具有所述终端设备支持的最大聚合级别下的所有聚合级别；和
收发器820，用于对所述控制信道候选集合中的控制信道候选进行检测并接收控制信息。
可选的，所述至少一个控制信道候选单元集合中的每一个包括多个控制信道候选，所述多个控制信道候选中的部分控制信道候选属于所述控制信道候选集合。
可选的，所述控制信道候选集合中控制信道候选的数量小于或等于所述终端设备支持的盲检测最大次数；和/或
所述控制信道候选集合中第一聚合级别的控制信道候选的数量小于或等于所述终端设备支持的针对所述第一聚合级别的盲检测最大次数。
可选的，所述处理器810还用于在至少一个控制信道资源集合内确定终端设备的控制信道候选集合，所述至少一个控制信道资源集合包括多个控制信道单元集合。
可选的，所述处理器810用于确定终端设备的控制信道候选集合包括：
所述处理器810用于根据所述终端设备的标识信息、所述终端设备所支持的最大聚合级别、时隙信息和第一偏移量中的一个或多个，确定所述终端设备对应的所述至少一个控制信道单元集合；或
所述处理器810用于根据具有至少一个变量的随机数函数确定所述终端设备对应的所述至少一个控制信道单元集合，其中所述至少一个变量包括所述终端设备的标识信息、所述终端设备所支持的最大聚合级别、时隙信息和第一偏移量中的至少一个。
可选的，所述处理器810用于确定终端设备的控制信道候选集合包括：
所述处理器810用于根据所述控制信道资源集合的索引、所述终端设备的标识信息、所述终端设备所支持的最大聚合级别、时隙信息和第一偏移量中的一个或多个，确定所述终端设备对应的所述至少一个控制信道单元集合；或
所述处理器810用于根据具有至少一个变量的随机数函数确定所述终端设备对应的所述至少一个控制信道单元集合，其中所述至少一个变量包括所述控制信道资源集合的索引、所述终端设备的标识信息、所述终端设备所支持的最大聚合级别、时隙信息和第一偏移量中的至少一个。
可选的，所述处理器810还用于：
根据第一配置信息确定所述至少一个控制信道单元集合中包含的所述控制信道候选集合，所述第一配置信息在先通过高层信令通知给所述终端设备；或
根据所述终端设备的标识信息和/或所述终端设备所属的终端设备组的组标识确定所述至少一个控制信道单元集合中包含的所述控制信道候选集合。
可选的，所述终端设备支持的最大聚合级别为所述终端设备自身能力所能支持的最 大聚合级别；或者，在所述自身能力范围内由所述接入网设备或由所述终端设备配置的最大聚合级别。
以上各实施例中的存储器可以包括易失性存储器(volatile memory)，例如随机存取存储器(random-access memory，RAM)；存储器也可以包括非易失性存储器(non-volatile memory)，例如快闪存储器(flash memory)、硬盘(hard disk drive，HDD)或固态硬盘(solid-state drive，SSD)；存储器还可以包括上述种类的存储器的组合。
以上各实施例中的处理器可以是中央处理器(central processing unit，CPU)、网络处理器(network processor，NP)或者CPU和NP的组合。处理器还可以进一步包括硬件芯片。上述硬件芯片可以是专用集成电路(application-specific integrated circuit，ASIC)、可编程逻辑器件(programmable logic device，PLD)或其组合。上述PLD可以是复杂可编程逻辑器件(complex programmable logic device，CPLD)、现场可编程逻辑门阵列(field-programmable gate array，FPGA)、通用阵列逻辑(generic array logic，GAL)或其任意组合。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明实施例的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，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，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能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本质上或者说对现有技术做出贡献的部分或者该技术方案的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(可以是个人计算机，服务器，或者网络设备等)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：U盘、移动硬盘、只读存储器(ROM， Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。

Claims (34)

  1. 一种控制信息的发送方法，其特征在于，包括：
    接入网设备确定终端设备的控制信道候选集合，其中，所述控制信道候选集合包括至少一个控制信道候选，所述至少一个控制信道候选包括至少一个控制信道单元，所述控制信道候选集合包含在至少一个控制信道单元集合内，所述控制信道单元集合包括的控制信道单元数量大于或等于所述终端设备支持的最大聚合级别对应的控制信道单元数量；所述控制信道单元集合内属于所述控制信道候选集合的所述控制信道候选具有至少两个聚合级别或具有所述终端设备支持的最大聚合级别下的所有聚合级别；和
    所述接入网设备利用所述控制信道候选集合中的至少一个控制信道候选，向所述终端设备发送控制信息。
  2. 根据权利要求1所述的方法，其特征在于，所述至少一个控制信道候选单元集合中的每一个包括多个控制信道候选，所述多个控制信道候选中的部分控制信道候选属于所述控制信道候选集合。
  3. 根据权利要求1至2中任一所述的方法，其特征在于，
    所述控制信道候选集合中控制信道候选的数量小于或等于所述终端设备支持的盲检测最大次数；和/或
    所述控制信道候选集合中第一聚合级别的控制信道候选的数量小于或等于所述终端设备支持的针对所述第一聚合级别的盲检测最大次数。
  4. 根据权利要求1至3中任一所述的方法，其特征在于，所述接入网设备确定终端设备的控制信道候选集合包括：
    所述接入网设备在至少一个控制信道资源集合内确定终端设备的控制信道候选集合，所述至少一个控制信道资源集合包括多个控制信道单元集合。
  5. 根据权利要求1至4中任一所述的方法，其特征在于，所述确定终端设备的控制信道候选集合包括：
    所述接入网设备根据所述终端设备的标识信息、所述终端设备所支持的最大聚合级别、时隙信息和第一偏移量中的一个或多个，确定所述终端设备对应的所述至少一个控制信道单元集合；或
    所述接入网设备根据具有至少一个变量的随机数函数确定所述终端设备对应的所述至少一个控制信道单元集合，其中所述至少一个变量包括所述终端设备的标识信息、所述终端设备所支持的最大聚合级别、时隙信息和第一偏移量中的至少一个。
  6. 根据权利要求4所述的方法，其特征在于，所述确定终端设备的控制信道候选集合包括：
    所述接入网设备根据所述控制信道资源集合的索引、所述终端设备的标识信息、所述终端设备所支持的最大聚合级别、时隙信息和第一偏移量中的一个或多个，确定所述终端设备对应的所述至少一个控制信道单元集合；或
    所述接入网设备根据具有至少一个变量的随机数函数确定所述终端设备对应的所述至少一个控制信道单元集合，其中所述至少一个变量包括所述控制信道资源集合的索引、所述终端设备的标识信息、所述终端设备所支持的最大聚合级别、时隙信息和 第一偏移量中的至少一个。
  7. 根据权利要求5或6所述的方法，其特征在于，所述确定终端设备的控制信道候选集合还包括：
    所述接入网设备根据第一配置信息确定所述至少一个控制信道单元集合中包含的所述控制信道候选集合，所述第一配置信息在先通过高层信令通知给所述终端设备；或
    所述接入网设备根据所述终端设备的标识信息和/或所述终端设备所属的终端设备组的组标识确定所述至少一个控制信道单元集合中包含的所述控制信道候选集合。
  8. 根据权利要求1至7中任一所述的方法，其特征在于，所述终端设备支持的最大聚合级别为所述终端设备自身能力所能支持的最大聚合级别；或者，在所述自身能力范围内由所述接入网设备或由所述终端设备配置的最大聚合级别。
  9. 一种控制信息的接收方法，其特征在于，包括：
    终端设备确定所述终端设备对应的控制信道候选集合，其中，所述控制信道候选集合包括至少一个控制信道候选，所述至少一个控制信道候选包括至少一个控制信道单元，所述控制信道候选集合包含在至少一个控制信道单元集合内，所述控制信道单元集合包括的控制信道单元数量大于或等于所述终端设备支持的最大聚合级别对应的控制信道单元数量；所述控制信道单元集合内属于所述控制信道候选集合的所述控制信道候选具有至少两个聚合级别或具有所述终端设备支持的最大聚合级别下的所有聚合级别；
    所述终端设备对所述控制信道候选集合中的控制信道候选进行检测并接收控制信息。
  10. 根据权利要求9所述的方法，其特征在于，所述至少一个控制信道候选单元集合中的每一个包括多个控制信道候选，所述多个控制信道候选中的部分控制信道候选属于所述控制信道候选集合。
  11. 根据权利要求9至10中任一所述的方法，其特征在于，
    所述控制信道候选集合中控制信道候选的数量小于或等于所述终端设备支持的盲检测最大次数；和/或
    所述控制信道候选集合中第一聚合级别的控制信道候选的数量小于或等于所述终端设备支持的针对所述第一聚合级别的盲检测最大次数。
  12. 根据权利要求9至11中任一所述的方法，其特征在于，还包括：
    所述终端设备在至少一个控制信道资源集合内确定终端设备的控制信道候选集合，所述至少一个控制信道资源集合包括多个控制信道单元集合。
  13. 根据权利要求9至12中任一所述的方法，其特征在于，所述确定终端设备的控制信道候选集合包括：
    所述终端设备根据所述终端设备的标识信息、所述终端设备所支持的最大聚合级别、时隙信息和第一偏移量中的一个或多个，确定所述终端设备对应的所述至少一个控制信道单元集合；或
    所述终端设备根据具有至少一个变量的随机数函数确定所述终端设备对应的所述至少一个控制信道单元集合，其中所述至少一个变量包括所述终端设备的标识信息、 所述终端设备所支持的最大聚合级别、时隙信息和第一偏移量中的至少一个。
  14. 根据权利要求12所述的方法，其特征在于，所述确定终端设备的控制信道候选集合包括：
    所述终端设备根据所述控制信道资源集合的索引、所述终端设备的标识信息、所述终端设备所支持的最大聚合级别、时隙信息和第一偏移量中的一个或多个，确定所述终端设备对应的所述至少一个控制信道单元集合；或
    所述终端设备根据具有至少一个变量的随机数函数确定所述终端设备对应的所述至少一个控制信道单元集合，其中所述至少一个变量包括所述控制信道资源集合的索引、所述终端设备的标识信息、所述终端设备所支持的最大聚合级别、时隙信息和第一偏移量中的至少一个。
  15. 根据权利要求13或14所述的方法，其特征在于，所述确定终端设备的控制信道候选集合还包括：
    所述终端设备根据第一配置信息确定所述至少一个控制信道单元集合中包含的所述控制信道候选集合，所述第一配置信息在先通过高层信令通知给所述终端设备；或
    所述终端设备根据所述终端设备的标识信息和/或所述终端设备所属的终端设备组的组标识确定所述至少一个控制信道单元集合中包含的所述控制信道候选集合。
  16. 根据权利要求9至15中任一所述的方法，其特征在于，所述终端设备支持的最大聚合级别为所述终端设备自身能力所能支持的最大聚合级别；或者，在所述自身能力范围内由所述接入网设备或由所述终端设备配置的最大聚合级别。
  17. 一种接入网设备，其特征在于，包括：
    处理器，用于确定终端设备的控制信道候选集合，其中，所述控制信道候选集合包括至少一个控制信道候选，所述至少一个控制信道候选包括至少一个控制信道单元，所述控制信道候选集合包含在至少一个控制信道单元集合内，所述控制信道单元集合包括的控制信道单元数量大于或等于所述终端设备支持的最大聚合级别对应的控制信道单元数量；所述控制信道单元集合内属于所述控制信道候选集合的所述控制信道候选具有至少两个聚合级别或具有所述终端设备支持的最大聚合级别下的所有聚合级别；和
    收发器，用于所述接入网设备利用所述控制信道候选集合中的至少一个控制信道候选，向所述终端设备发送控制信息。
  18. 根据权利要求17所述的接入网设备，其特征在于，所述至少一个控制信道候选单元集合中的每一个包括多个控制信道候选，所述多个控制信道候选中的部分控制信道候选属于所述控制信道候选集合。
  19. 根据权利要求17至18中任一所述的接入网设备，其特征在于，
    所述控制信道候选集合中控制信道候选的数量小于或等于所述终端设备支持的盲检测最大次数；和/或
    所述控制信道候选集合中第一聚合级别的控制信道候选的数量小于或等于所述
    终端设备支持的针对所述第一聚合级别的盲检测最大次数。
  20. 根据权利要求17至19中任一所述的接入网设备，其特征在于，所述处理器还用于在至少一个控制信道资源集合内确定终端设备的控制信道候选集合，所述至 少一个控制信道资源集合包括多个控制信道单元集合。
  21. 根据权利要求17至20中任一所述的接入网设备，其特征在于，所述处理器用于确定终端设备的控制信道候选集合包括：
    所述处理器用于根据所述终端设备的标识信息、所述终端设备所支持的最大聚合级别、时隙信息和第一偏移量中的一个或多个，确定所述终端设备对应的所述至少一个控制信道单元集合；或
    所述处理器用于根据具有至少一个变量的随机数函数确定所述终端设备对应的所述至少一个控制信道单元集合，其中所述至少一个变量包括所述终端设备的标识信息、所述终端设备所支持的最大聚合级别、时隙信息和第一偏移量中的至少一个。
  22. 根据权利要求20所述的接入网设备，其特征在于，所述处理器用于确定终端设备的控制信道候选集合包括：
    所述处理器用于根据所述控制信道资源集合的索引、所述终端设备的标识信息、所述终端设备所支持的最大聚合级别、时隙信息和第一偏移量中的一个或多个，确定所述终端设备对应的所述至少一个控制信道单元集合；或
    所述处理器用于根据具有至少一个变量的随机数函数确定所述终端设备对应的所述至少一个控制信道单元集合，其中所述至少一个变量包括所述控制信道资源集合的索引、所述终端设备的标识信息、所述终端设备所支持的最大聚合级别、时隙信息和第一偏移量中的至少一个。
  23. 根据权利要求21或22所述的接入网设备，其特征在于，所述处理器还用于：
    根据第一配置信息确定所述至少一个控制信道单元集合中包含的所述控制信道候选集合，所述第一配置信息在先通过高层信令通知给所述终端设备；或
    根据所述终端设备的标识信息和/或所述终端设备所属的终端设备组的组标识确定所述至少一个控制信道单元集合中包含的所述控制信道候选集合。
  24. 根据权利要求17至23中任一所述的接入网设备，其特征在于，所述终端设备支持的最大聚合级别为所述终端设备自身能力所能支持的最大聚合级别；或者，在所述自身能力范围内由所述接入网设备或由所述终端设备配置的最大聚合级别。
  25. 一种终端设备，其特征在于，包括：
    处理器，用于确定所述终端设备对应的控制信道候选集合，其中，所述控制信道候选集合包括至少一个控制信道候选，所述至少一个控制信道候选包括至少一个控制信道单元，所述控制信道候选集合包含在至少一个控制信道单元集合内，所述控制信道单元集合包括的控制信道单元数量大于或等于所述终端设备支持的最大聚合级别对应的控制信道单元数量；所述控制信道单元集合内属于所述控制信道候选集合的所述控制信道候选具有至少两个聚合级别或具有所述终端设备支持的最大聚合级别下的所有聚合级别；和
    收发器，用于对所述控制信道候选集合中的控制信道候选进行检测并接收控制信息。
  26. 根据权利要求25所述的终端设备，其特征在于，所述至少一个控制信道候选单元集合中的每一个包括多个控制信道候选，所述多个控制信道候选中的部分控制 信道候选属于所述控制信道候选集合。
  27. 根据权利要求25至26中任一所述的终端设备，其特征在于，
    所述控制信道候选集合中控制信道候选的数量小于或等于所述终端设备支持的盲检测最大次数；和/或
    所述控制信道候选集合中第一聚合级别的控制信道候选的数量小于或等于所述终端设备支持的针对所述第一聚合级别的盲检测最大次数。
  28. 根据权利要求25至27中任一所述的终端设备，其特征在于，所述处理器还用于在至少一个控制信道资源集合内确定终端设备的控制信道候选集合，所述至少一个控制信道资源集合包括多个控制信道单元集合。
  29. 根据权利要求25至27中任一所述的终端设备，其特征在于，所述处理器用于确定终端设备的控制信道候选集合包括：
    所述处理器用于根据所述终端设备的标识信息、所述终端设备所支持的最大聚合级别、时隙信息和第一偏移量中的一个或多个，确定所述终端设备对应的所述至少一个控制信道单元集合；或
    所述处理器用于根据具有至少一个变量的随机数函数确定所述终端设备对应的所述至少一个控制信道单元集合，其中所述至少一个变量包括所述终端设备的标识信息、所述终端设备所支持的最大聚合级别、时隙信息和第一偏移量中的至少一个。
  30. 根据权利要求28所述的终端设备，其特征在于，所述处理器用于确定终端设备的控制信道候选集合包括：
    所述处理器用于根据所述控制信道资源集合的索引、所述终端设备的标识信息、所述终端设备所支持的最大聚合级别、时隙信息和第一偏移量中的一个或多个，确定所述终端设备对应的所述至少一个控制信道单元集合；或
    所述处理器用于根据具有至少一个变量的随机数函数确定所述终端设备对应的所述至少一个控制信道单元集合，其中所述至少一个变量包括所述控制信道资源集合的索引、所述终端设备的标识信息、所述终端设备所支持的最大聚合级别、时隙信息和第一偏移量中的至少一个。
  31. 根据权利要求29或30所述的终端设备，其特征在于，所述处理器还用于：
    根据第一配置信息确定所述至少一个控制信道单元集合中包含的所述控制信道候选集合，所述第一配置信息在先通过高层信令通知给所述终端设备；或
    根据所述终端设备的标识信息和/或所述终端设备所属的终端设备组的组标识确定所述至少一个控制信道单元集合中包含的所述控制信道候选集合。
  32. 根据权利要求25至31中任一所述的终端设备，其特征在于，所述终端设备支持的最大聚合级别为所述终端设备自身能力所能支持的最大聚合级别；或者，在所述自身能力范围内由所述接入网设备或由所述终端设备配置的最大聚合级别。
  33. 一种计算机可读存储介质，包括指令，当其在计算机上运行时，使得计算机执行如权利要求1-8中任意一项所述的方法，或者权利要求9-16任意一项所述的方法。
  34. 一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行如权利要求1-8中任意一项所述的方法，或者权利要求9-16任意一项所述的方法。
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