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WO2018127241A1 - Procédé de transmission de dci, terminal utilisateur et dispositif côté réseau - Google Patents

Procédé de transmission de dci, terminal utilisateur et dispositif côté réseau Download PDF

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Publication number
WO2018127241A1
WO2018127241A1 PCT/CN2018/076492 CN2018076492W WO2018127241A1 WO 2018127241 A1 WO2018127241 A1 WO 2018127241A1 CN 2018076492 W CN2018076492 W CN 2018076492W WO 2018127241 A1 WO2018127241 A1 WO 2018127241A1
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Prior art keywords
information
control information
partial control
format
partial
Prior art date
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PCT/CN2018/076492
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English (en)
Chinese (zh)
Inventor
王磊
艾托尼
潘学明
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China Academy of Telecommunications Technology CATT
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China Academy of Telecommunications Technology CATT
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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
    • 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
    • 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
    • H04W72/20—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 disclosure relates to the field of communications technologies, and in particular, to a downlink control information (Downlink Control Information, DCI) transmission method, a user terminal (UE, User Equipment), and a network side device.
  • DCI Downlink Control Information
  • LTE Long Term Evolution
  • DCI Downlink Control Information
  • A aggregation levels
  • the UE needs to use all the physical downlink control channels in different AL blind search spaces according to the desired DCI format in a Common Search Space (CSS) or a UE-specific Search Space (USS).
  • CSS Common Search Space
  • USS UE-specific Search Space
  • PDCCH Physical Downlink Control Channel
  • the DCI format that the UE needs to support will be more diverse.
  • the UE needs to try blind detection on multiple different ALs according to multiple possible DCI formats, and different DCI formats are applied to different transmission modes or service types, so that the blind detection complexity of the UE is very high.
  • the terminal consumes a lot of power. For example, for a UE supporting TM4, it needs to perform blind detection at least according to DCI format 0, DCI format 1A and DCI format 2. If the UE notification supports Uplink Multiple-Input Multiple-Output (UL MIMO), it is also necessary to perform blind detection according to DCI format 4.
  • UL MIMO Uplink Multiple-Input Multiple-Output
  • the UE needs to be blindly checked 32 or 48 times in the USS. It can be seen that the blind detection complexity of the UE receiving DCI is very high, and the UE consumes a lot of power.
  • the purpose of the disclosure is to provide a DCI transmission method, a UE, and a network side device, so as to solve the problem that the blind detection complexity of the UE receiving DCI is very high, and the UE consumes a large amount of power.
  • the present disclosure provides a downlink control information transmission method, including: receiving, by a UE, a first part of control information included in a DCI by using a blind detection PDCCH, where the first part of control information includes a fixed information field, where The information field includes the received information of the second partial control information included in the DCI; and the UE receives and parses the second partial control information according to the received information.
  • the UE receives and parses the first part of the control information that is included in the DCI by using the PDCCH, and includes: the UE receives and parses the DCI by using the PDCCH candidate resource in the search space to blindly detect the PDCCH. Part of the control information.
  • the user terminal parses the first part of the control information independently of the AL of the PDCCH.
  • the first part of the control information includes an information field in which the fixed information field is a fixed information type.
  • the format of the second part of the control information corresponds to at least one of the following: a service type scheduled by the network side device, a transmission mode scheduled by the network side device, or a terminal type scheduled by the network side device.
  • the receiving information includes at least one of: format information of the second partial control information, AL information of the PDCCH, and a quantity of resources occupied by the second partial control information.
  • the receiving, by the UE, the second part of control information according to the received information includes: if the received information includes format information of the second part of control information, the UE receives a second part of control And determining, according to the format information, the second partial control information according to the format information; or if the receiving information includes format information of the second partial control information and AL information of the PDCCH, the user terminal Receiving a second part of control information, and parsing the second part of control information according to the AL information of the PDCCH according to the format information, where the AL information includes an AL of the PDCCH, or the AL information indicates the PDCCH
  • the AL is the AL of the user terminal currently blindly detecting the use of the first partial control information; or if the received information includes the format of the second partial control information and the number of resources occupied by the second partial control information, The user terminal receives the second partial control information and parses the second part according to the format information according to the number of resources occupied by the second partial control information. Control information.
  • the receiving, by the UE, the second partial control information according to the received information if the receiving information includes the AL information of the second partial control information, the UE is configured according to the AL
  • the AL indicated by the information attempts to detect, receive, and parse the second partial control information according to a possible DCI format, where the AL information includes an AL of the PDCCH, or the AL information indicates that the AL of the PDCCH is the
  • the user terminal currently blindly detects the AL used by the first part of control information; or if the received information includes the number of resources occupied by the second part of control information, the user terminal occupies according to the second part of control information
  • the number of resources detects, receives, and parses the second portion of control information in accordance with a possible DCI format.
  • the first partial control information and the second partial control information are mapped on a same group of consecutive Control Channel Elements (CCEs).
  • Receiving, by the UE, the second partial control information according to the received information including: the UE receiving and parsing the first information according to the received information on consecutive CCEs that receive the first partial control information Two parts of control information.
  • the receiving information includes format information of the second partial control information, and further includes at least one of: mapping resource location information of the second partial control information and the second partial control information The number of resources.
  • Receiving, by the user terminal, the second partial control information according to the received information including: if the receiving information includes mapping resource location information of the second partial control information and a format of the second partial control information Information, the user terminal receives the second partial control information on the resource location indicated by the mapping resource location information, and attempts to parse the second partial control information according to the format information according to the format information; or if the receiving The information includes the mapping resource location information of the second partial control information, the format of the second partial control information, and the number of resources occupied by the second partial control information, where the user terminal is represented by the mapping resource location information. And at the resource location, receiving the second part of the control information, and parsing the second part of the control information according to the number of resources occupied by the second part of the control information according to the format information.
  • the present disclosure further provides a downlink control information transmission method, including: the network side device maps the first partial control information and the second partial control information of the DCI to the same PDCCH, where the first partial control information A fixed information field is included, the information field including receiving information of the second partial control information included in the DCI.
  • the first part of the control information includes an information field in which the fixed information field is a fixed information type.
  • the format of the second part of the control information is corresponding to at least one of the following: a service type scheduled by the network side device, a transmission mode scheduled by the network side device, or a terminal type scheduled by the network side device.
  • the receiving information includes at least one of: format information of the second partial control information, AL information of the PDCCH, and a quantity of resources occupied by the second partial control information.
  • the first partial control information and the second partial control information are transmitted by using different transport blocks, and the first partial control information and the second partial control information are channel-encoded, and the information bits are cascaded. .
  • the first partial control information and the second partial control information are mapped on the same group of consecutive CCEs.
  • the mapping resource location of the second partial control information is notified by the first partial control information, and the receiving information includes format information of the second partial control information, and further includes at least one of the following: The mapping resource location information of the second part of the control information and the number of resources occupied by the second part of the control information.
  • the present disclosure further provides a UE, including: a blind detection module, configured to receive and parse a first part of control information included in a DCI by blindly detecting a PDCCH, where the first part of control information includes a fixed information field. And the information field includes receiving information of the second partial control information included in the DCI; and a receiving parsing module, configured to receive and parse the second partial control information according to the received information.
  • a blind detection module configured to receive and parse a first part of control information included in a DCI by blindly detecting a PDCCH, where the first part of control information includes a fixed information field. And the information field includes receiving information of the second partial control information included in the DCI; and a receiving parsing module, configured to receive and parse the second partial control information according to the received information.
  • the blind detection module is configured to receive and parse the first part of the control information included in the DCI by blindly detecting the PDCCH on the PDCCH candidate resource in the search space.
  • the user terminal parses the first part of the control information independently of the AL of the PDCCH.
  • the first part of the control information includes an information field in which the fixed information field is a fixed information type.
  • the format of the second part of the control information corresponds to at least one of the following: a service type scheduled by the network side device, a transmission mode scheduled by the network side device, or a terminal type scheduled by the network side device.
  • the receiving information includes at least one of: format information of the second partial control information, AL information of the PDCCH, and a quantity of resources occupied by the second partial control information.
  • the receiving parsing module is configured to: if the receiving information includes the format of the second partial control information, receive the second partial control information, and try to parse the second part according to the format information according to the format information. Controlling information; or the receiving parsing module is configured to: if the receiving information includes format information of the second partial control information and AL information of the PDCCH, receive second partial control information, and according to the format information, according to the The AL information of the PDCCH parses the second part of control information, where the AL information includes an AL of the PDCCH, or the AL information indicates that the AL of the PDCCH is currently blindly detected by the user terminal to the first part.
  • Controlling the AL used by the information; or the receiving parsing module is configured to: if the received information includes the format of the second partial control information and the number of resources occupied by the second partial control information, receive the second partial control information according to The format information parses the second partial control information according to the number of resources occupied by the second partial control information.
  • the receiving parsing module is configured to: if the receiving information includes the AL information of the second partial control information, the UE attempts to detect, receive, and receive according to the possible DCI format according to the AL indicated by the AL information. Parsing the second part of control information, where the AL information includes an AL of the PDCCH, or the AL information indicates that the AL of the PDCCH is currently used by the user terminal to blindly detect the first part of control information. Or; if the received information includes the number of resources occupied by the second partial control information, the user terminal detects, receives, and parses the number according to the number of resources occupied by the second partial control information according to a possible DCI format. The second part controls the information.
  • the first partial control information and the second partial control information are mapped on the same group of consecutive CCEs.
  • the receiving parsing module is configured to receive and parse the second partial control information according to the received information on consecutive CCEs that receive the first partial control information.
  • the receiving information includes format information of the second partial control information, and further includes at least one of: mapping resource location information of the second partial control information and the second partial control information The number of resources.
  • the receiving parsing module is configured to: if the receiving information includes mapping resource location information of the second partial control information and format information of the second partial control information, at a resource location indicated by the mapping resource location information, Receiving the second part of the control information and attempting to parse the second part of the control information according to the format information according to the format information; or the receiving and parsing module is configured to: if the receiving information includes the mapping resource of the second part of the control information The location information, the format of the second partial control information, and the number of resources occupied by the second partial control information, on the resource location indicated by the mapping resource location information, receiving the second partial control information according to the format information And parsing the second part of control information according to the number of resources occupied by the second part of control information.
  • the present disclosure further provides a network side device, including: a transmission module, configured to map first part control information and second part control information of a DCI to a same downlink control channel, where the first part is The control information includes a fixed information field including the received information of the second partial control information included in the DCI.
  • the first part of the control information includes an information field in which the fixed information field is a fixed information type.
  • the format of the second part of the control information is corresponding to at least one of the following: a service type scheduled by the network side device, a transmission mode scheduled by the network side device, or a terminal type scheduled by the network side device.
  • the receiving information includes at least one of: format information of the second partial control information, AL information of the PDCCH, and a quantity of resources occupied by the second partial control information.
  • the first partial control information and the second partial control information are transmitted by using different transport blocks, and the first partial control information and the second partial control information are channel-encoded, and the information bits are cascaded. .
  • the first partial control information and the second partial control information are mapped on the same group of consecutive CCEs.
  • the mapping resource location of the second partial control information is notified by the first partial control information, and the receiving information includes format information of the second partial control information, and further includes at least one of the following: The mapping resource location information of the second part of the control information and the number of resources occupied by the second part of the control information.
  • the present disclosure provides a user terminal.
  • the user terminal includes a processor, and a memory coupled to the processor via a bus interface and for storing computer instructions and data used by the processor in performing operations, wherein the computer instructions are The method described in the first aspect above is implemented when the processor invokes and executes.
  • the present disclosure provides a network side device, including: a processor, and a memory connected to the processor through a bus interface, and configured to store computer instructions used by the processor when performing an operation And data, wherein the computer instructions, when invoked and executed by the processor, implement the method of the second aspect above.
  • the present disclosure provides a non-volatile storage medium having stored thereon computer instructions and data, wherein the computer instructions are invoked and executed by the processor The method described in the first aspect above is implemented.
  • the present disclosure provides a non-volatile storage medium having stored thereon computer instructions and data, wherein the computer instructions are invoked and executed by the processor The method described in the second aspect above is implemented.
  • the UE receives and parses the first partial control information included in the DCI by using a blind detection PDCCH, where the first partial control information includes a fixed information domain, and the information domain includes a second partial control included in the DCI.
  • Receiving information of the information the UE receives and parses the second partial control information according to the received information.
  • the first part of the control information includes a fixed information field, so that the UE does not need to perform blind detection according to multiple DCI formats, and the second partial control information can be parsed by using the received information included in the first partial control information, thereby reducing the blind detection of the UE.
  • FIG. 1 is a schematic structural diagram of a network provided by the present disclosure
  • FIG. 5 is a structural diagram of downlink control information transmission provided by the present disclosure.
  • FIG. 6 is a structural diagram of downlink control information transmission provided by the present disclosure.
  • FIG. 7 is a structural diagram of downlink control information transmission provided by the present disclosure.
  • FIG. 8 is a structural diagram of downlink control information transmission provided by the present disclosure.
  • FIG. 9 is a structural diagram of downlink control information transmission provided by the present disclosure.
  • FIG. 10 is a flowchart of a downlink control information transmission method provided by the present disclosure.
  • FIG. 11 is a structural diagram of a UE provided by the present disclosure.
  • FIG. 12 is a structural diagram of a network side device provided by the present disclosure.
  • FIG. 13 is a structural diagram of another UE provided by the present disclosure.
  • FIG. 14 is a structural diagram of another network side device provided by the present disclosure.
  • FIG. 1 is a schematic diagram of a network structure provided by the present disclosure.
  • a user equipment (User Equipment, UE) 11 and a network device 12 are illustrated.
  • the UE 11 may be a mobile phone or a tablet computer (Tablet Personal Computer). ), terminal computer devices such as laptop computers, personal digital assistants (PDAs), mobile Internet devices (MIDs), or wearable devices (Wearable Devices), etc. Yes, the specific type of UE 11 is not limited in this disclosure.
  • the UE 11 can establish communication with the network device 12, wherein the network in the figure can indicate that the UE 11 wirelessly establishes communication with the network device 12, and the network device 12 can be a base station, wherein the base station can be a macro station, such as Long Term Evolution (LTE) eNB, 5G NR NB or gNB, etc.; may also be a small station, such as a low power node (LPN: low power node) pico, femto, etc., or may be an access point (AP, access point); network device 12 It may be a central unit (CU) or may be a Transmission Reception Point (TRP) managed and controlled by the CU. In addition, one network device 12 has one or more cells (eg, different frequency points or sector splits). It should be noted that the specific type of the network device 12 is not limited in the present disclosure.
  • the present disclosure provides a downlink control information transmission method.
  • the downlink control information transmission method includes the following steps 201-202.
  • the UE receives and parses the first part of the control information included in the Downlink Control Information (DCI) by using a physical downlink control channel (PDCCH), where the first part of the control information includes a fixed An information field, the information field including receiving information of the second part of control information included in the DCI;
  • DCI Downlink Control Information
  • PDCCH physical downlink control channel
  • the UE receives and parses the second partial control information according to the received information.
  • the step 201 may be that the UE uses different Aggregation Level (AL) blind detection PDCCH.
  • A Aggregation Level
  • the UE can always parse the first part regardless of the AL of the first part of the control information.
  • Part of the control information because the information field of the first part of the control information is fixed, that is, the information field included in the first part of the control information is independent of the transmission mode of the UE, and the service type of the UE, so that the UE does not need to perform blind detection according to multiple formats, and can be used.
  • the first part of the control information includes the received information to parse out the second part of the control information, so that the number of blind detections of the UE can be reduced.
  • the foregoing receiving information may be related information used by the UE to receive and parse the second partial control information, for example, the format of the second partial control information, the AL of the PDCCH, or the second partial control information. Resource information, etc.
  • the received information can be obtained, so that the second part of the control information can be received and parsed by using the received information, without performing blind detection again, that is, in the embodiment of the present disclosure. Only the first part of the control information is obtained by blind detection, and the second part of the control information is received and parsed based on the received information included in the first part of the control information.
  • the content included in the second partial control information is not limited, and the content included in the second partial control information may be any content that the network side device needs to send to the UE.
  • one DCI can be implemented by the foregoing steps, including two independent parts, that is, the first part of control information and the second part of control information, and the UE blindly detects the downlink control channel in its search space, first parses out the first part of the control. Information, and according to the first part of the control information, how to receive the second part of the control information, so as to reduce the complexity of the blind detection of the UE receiving the DCI, and reduce the power consumption of the UE.
  • the UE receives and parses the first part of the control information that is included in the DCI by using the blind detection PDCCH, where the UE receives the PDCCH by blindly detecting the PDCCH on the PDCCH candidate resource in the search space.
  • the first part of the control information included in the DCI is parsed.
  • the PDCCH candidate resource may be a plurality of candidate resources in the search space, and the search space may be a user-specific search space (USS) or a common search space (CSS), and the PDCCH candidate resource may be a plurality of candidate resources in the search space, and
  • the resource locations of the multiple candidate resources may be predefined or configured or determined by other methods.
  • the UE side and the network side device side have a unified understanding of the resource location, so that the UE does not need to be blinded in too many resource locations. Check to further reduce the number of blind checks.
  • the UE may blindly detect the PDCCH by using the PDCCH candidate resource in its search space, and the UE may blindly check the PDCCH in the PDCCH candidate resource of the search space until the blind detection of all PDCCH candidate resources is completed, or until the UE successfully receives the PDCCH.
  • the first part of the control information is received, or all DCIs that the UE needs to receive are received.
  • the user terminal parses the first part of the control information independently of the AL of the PDCCH.
  • the user terminal parsing the first partial control information independently of the PDCCH of the PDCCH may be understood as: the UE does not need to know the AL actually used by the PDCCH to parse the first partial control information, thereby reducing the previous message between the UE and the network side. Make interactions to save on signaling overhead.
  • the first part of the control information includes an information field in which the fixed information field is a fixed information type.
  • the information field of the fixed information type herein can be understood as the first part of the control information including the information type, and the information domain included therein is independent of the transmission mode, service type, and the like of the UE. Since the information field of the first part of the control information is an information field of a fixed information type, the UE does not need to perform blind detection according to multiple formats to reduce the number of blind detections.
  • the fixed information type may be previously known by the UE, for example, the UE is pre-negotiated with the network side device, or the network side is configured to the UE, that is, the information type of the information field of the first part of the control information is known in advance by the UE. The UE can directly perform the blind detection according to the type of information, and can parse the received information.
  • the information that the first part of the control information includes the fixed information field is a fixed information type, for example, other fixed forms, for example, the UE and the network side device agree in advance.
  • Other fixed forms of information fields are possible.
  • the format of the second part of the control information corresponds to at least one of the following: a service type scheduled by the network side device, a transmission mode scheduled by the network side device, or a terminal type scheduled by the network side device.
  • the second part of the control information may be divided into different formats according to the transmission mode, service type, or terminal type of the UE scheduled by the network side, and the information fields of the second part of the control information of different formats are different to adapt to Different transmission modes, service types, or terminal types meet the service requirements of the UE.
  • the corresponding relationship between the service type and the format, and the corresponding relationship between the transmission mode and the format, and the correspondence between the terminal type and the format may be defined by the network side device configuration or the protocol, which is not described in detail.
  • the receiving information includes at least one of: format information of the second partial control information, AL information of the PDCCH, and a quantity of resources occupied by the second partial control information.
  • the format information is used to indicate a format of the second partial control information
  • the AL information of the PDCCH is used to indicate the AL of the PDCCH, that is, the UE can determine the AL of the PDCCH by using the AL information, and further use the corresponding AL parsing. Two parts of control information.
  • At least one of the format information of the second partial control information, the AL information, and the number of resources occupied by the second partial control information may be implemented, so that the number of blind detections of the UE may be reduced.
  • the resource overhead of the first part of the control information can be saved.
  • the receiving, by the UE, the second part of control information according to the received information includes: if the received information includes format information of the second part of control information, the UE receives a second part of control The information attempts to parse the second partial control information according to the format information according to the format information.
  • the receiving, by the second part, the second partial control information according to the format information according to the format information may be that the UE receives the second partial control information on the continuous resource of the first partial control information, and according to the foregoing,
  • the format information attempts to parse the second partial control information according to different ALs.
  • the information bit of the first partial control information and the second partial control information is cascaded, that is, the first partial control information and the second control information portion are transmitted on consecutive resources, so that the UE can receive the first partial control information naturally. Go to the second part of the control information.
  • the UE may obtain the format and the resource location in advance.
  • the second part of each format controls the resource location of the information to receive the corresponding second partial control information at the corresponding resource location.
  • the foregoing corresponding relationship may be that the UE is pre-negotiated with the network side device, or the network side device is pre-configured to the UE, or is defined by a protocol, and the like.
  • the resource overhead of the first partial control information may be saved.
  • the first partial control information includes the received information.
  • other information may be included, which is not limited in this embodiment of the present disclosure.
  • the first part of the control information includes the second part of the control information format, even if a new DCI format needs to be introduced in the wireless mobile system in the future, the number of blind detections is not increased, thereby ensuring downlink control. Forward compatibility of the channel.
  • the downlink control information carried on one downlink control channel includes two parts, that is, the first part of control information and the second part of control information.
  • the first part of the control information includes format information of the second part of the control information.
  • the first part of the control information may also contain information bits of other fixed content.
  • the AL supported by the downlink control channel of the terminal is 1, 2, 4, and 8, and the search space includes 16 control channel elements. In this embodiment, it is called a CCE (Control Channel Element).
  • the downlink control channel with AL of 1 has 6 candidate resources in the search space
  • the downlink control channel with AL 2 has 6 candidate resources
  • the search space for the downlink control channel with AL 4 has 2
  • the candidate resource has two candidate resources in the search space of the downlink control channel with AL 8.
  • the information bits contained in the first part of the control information are small enough to be transmitted in one CCE.
  • the schematic diagram is shown in FIG. 3, wherein the position of the thick solid white background is the possible position of the downlink control channel candidate resource, and the black shading is the position of the first part of the candidate information control information transmission.
  • Figure 3 is only a schematic diagram and does not represent the actual resource mapping.
  • the UE can always parse out the first part of the control information. After parsing the first control information, the UE obtains the format of the second control information, and further knows how to parse the information domain of the second control information. In summary, the UE only needs to select 16 candidate resource locations in the search space according to different AL blind detection.
  • the UE can receive the maximum of 16 blind checks. All DCIs it needs to receive. Even if a new DCI format needs to be introduced in a wireless mobile system in the future, the number of blind detections will not increase.
  • the resource distribution of the search space in the schematic diagram of this embodiment is only one example. This embodiment does not exclude that the above method provided by the embodiment of the present disclosure can be applied to other search space structures, such as the search space structure shown in FIG. 4, and the same beneficial effects can be achieved.
  • the downlink control information carried on one downlink control channel includes two parts, that is, the first part control information and the second part control information.
  • the first part of the control information includes format information of the second part of the control information.
  • the first part of the control information may also contain information bits of other fixed content.
  • N is assumed to be 1.
  • the AL supported by the downlink control channel of the terminal is 2, 4, and 8, and the search space includes 16 control channel units, which is referred to as CCE in this embodiment.
  • the UE can always parse out the first part of the control information. After parsing the first control information, the UE obtains the format of the second control information, and further knows how to parse the information domain of the second control information. In summary, the UE only needs to select 10 candidate resource locations in the search space according to different AL blind detection.
  • the terminal can receive the maximum number of times after the blind detection. All DCIs it needs to receive. Even if a new DCI format needs to be introduced in a wireless mobile system in the future, the number of blind detections will not increase.
  • the resource distribution of the search space in the schematic diagram of this embodiment is only one example. This embodiment does not exclude that the foregoing method provided by the embodiment of the present disclosure may be applied to other search space structures, such as the search space structure shown in FIG. And can achieve the same beneficial effects.
  • the receiving, by the UE, the second partial control information according to the received information if the receiving information includes format information of the second partial control information and AL information of the PDCCH, where The user terminal receives the second partial control information, and parses the second partial control information according to the AL information of the PDCCH according to the format information, where the AL information includes an AL of the PDCCH, or the AL information indication
  • the AL of the PDCCH is an AL that the user terminal is currently blindly detecting the use of the first partial control information.
  • the receiving, by the UE, the second partial control information according to the received information if the receiving information includes the AL information of the second partial control information, the user terminal is configured according to the The AL indicated by the AL information attempts to detect, receive, and parse the second partial control information according to a possible DCI format, where the AL information includes an AL of the PDCCH, or the AL information indicates that the AL of the PDCCH is The user terminal currently blindly detects the AL used by the first part of the control information.
  • the AL information including the AL of the PDCCH may be represented. If the AL of the PDCCH is different from the AL used by the UE to analyze the first partial control information, the AL of the PDCCH may be directly indicated by the AL information to be the current blind detection of the user terminal. The first portion controls the AL used by the information without the need to add additional information bits.
  • the first part of the control information includes the format of the second part of the control information and the AL information of the PDCCH, so that the UE can directly analyze the second part of the control information according to the format of the second part of the control information and the AL of the PDCCH, thereby improving the UE acquiring the DCI.
  • the efficiency, as well as the power consumption of the UE can be saved.
  • the downlink control information carried on one downlink control channel includes two parts, that is, the first part of control information and the second part of control information.
  • the first part of the control information includes the format information of the second part of the control information and the AL of the downlink control channel.
  • the first part of the control information may also contain information bits of other fixed content.
  • the AL supported by the downlink control channel of the UE is 1, 2, 4, and 8, and the search space includes 16 control channel units, which is referred to as CCE in this embodiment.
  • the downlink control channel with AL of 1 has 6 candidate resources in the search space
  • the downlink control channel with AL 2 has 6 candidate resources
  • the search space for the downlink control channel with AL 4 has 2
  • the candidate resource has two candidate resources in the search space of the downlink control channel with AL 8. It is assumed that the information bits contained in the first part of the control information are small enough to be transmitted in one CCE.
  • the schematic diagram is shown in Figure 7.
  • the location of the thick solid white background is the possible location of the downlink control channel candidate resource, the user terminal dedicated control channel candidate resource, and the shading is the candidate resource location that the terminal needs to blindly check, black shading.
  • the first part of the candidate resource for blind detection controls the location of information transmission.
  • Figure 7 is only a schematic diagram and does not represent the actual resource mapping.
  • the UE needs to blindly check the location of nine candidate resources in the search space, that is, when the AL is 8, the two candidate resource locations are blindly checked, and when the AL is 4, one candidate resource location is blindly checked, and when the AL is 2 and 1, the AL is 2 and 1. It is necessary to blindly check the location of 3 candidate resources.
  • the UE can always parse out the first part of the control information.
  • the first part of the control information includes the format of the second control information and the AL of the downlink control channel.
  • the downlink control information carried on one downlink control channel includes two parts, that is, the first part control information and the second part control information.
  • the first part of the control information includes the format information of the second part of the control information and the AL of the downlink control channel.
  • the UE can always parse out the first part of the control information.
  • the first part of the control information includes the format of the second control information and the AL of the downlink control channel. After parsing the first control information, the UE obtains the format of the second control information, further knows how to receive the information domain of the second control information, and obtains the AL actually used by the downlink control channel.
  • the UE explicitly knows the format of the second part of the downlink control information, and thus does not need to perform blind detection according to different formats.
  • the receiving by the UE, the second partial control information according to the received information, if the receiving information includes the format of the second partial control information and the second partial control information The number of resources, the UE parses the second partial control information according to the second partial control information and according to the format information according to the number of resources occupied by the second partial control information.
  • the receiving, by the UE, the second part of the control information according to the received information includes: if the received information includes the number of resources occupied by the second part of control information, the user terminal is configured according to the The second part of the control information occupies the number of resources to detect, receive and parse the second part of the control information according to a possible DCI format.
  • the parsing the second partial control information according to the number of resources occupied by the second partial control information may be that the UE parses according to the number of resources occupied by the second partial control information to obtain the second partial control information.
  • the first part of the control information includes the format of the second part of the control information and the number of resources occupied by the second part of the control information, so that the UE can directly analyze according to the format of the second part of the control information and the number of resources occupied by the second part of the control information.
  • the second part controls the information, thereby improving the efficiency of the UE acquiring the DCI, and saving the power consumption of the UE.
  • the first part of the control information can be transmitted in one control channel unit or in two control channel units to meet different coverage requirements.
  • the first part of the control information is not excluded from being transmitted at other resource granularities.
  • the UE needs to blindly check the first part of the downlink control information in its own search space.
  • the UE blindly checks the first part of the downlink control information according to different ALs.
  • the UE After the UE successfully receives the first part of downlink control information, it determines how to receive and decode the second part according to the information of the second part of the downlink control information format and the number of resources occupied by the second part of the downlink control information.
  • Downstream control information is the UE successfully receives the first part of downlink control information.
  • the number of resources occupied by the downlink control information of the second part is a positive integer greater than or equal to 1, and the network side device can indicate according to the channel condition.
  • the resources occupied by the first part of the downlink control channel and the resources occupied by the second part of the downlink control channel may be consecutive control channel units, or may be discontinuous.
  • the first partial control information and the second partial control information are mapped on the same group of consecutive CCEs.
  • Receiving, by the UE, the second partial control information according to the received information including: the UE receiving and parsing the first information according to the received information on consecutive CCEs that receive the first partial control information Two parts of control information.
  • the UE may receive and parse the second partial control information according to the received information.
  • the receiving information provided in the foregoing embodiment includes format information, AL information, and the information of the second partial control information.
  • the receiving and analyzing implementation manner introduced in the implementation manner of at least one of the second part of the control information is not described herein, and the same beneficial effects can be achieved.
  • the first partial control information and the second partial control information are mapped on the same group of consecutive CCEs, so that the continuity of the first partial control information and the second control information can be ensured to facilitate UE reception.
  • the receiving information includes format information of the second partial control information, and further includes at least one of: mapping resource location information of the second partial control information and the second partial control information The number of resources.
  • Receiving, by the user terminal, the second partial control information according to the received information including: if the receiving information includes mapping resource location information of the second partial control information and a format of the second partial control information Information, the user terminal receives the second partial control information on the resource location indicated by the mapping resource location information, and attempts to parse the second partial control information according to the format information according to the format information; or if the receiving The information includes the mapping resource location information of the second partial control information, the format of the second partial control information, and the number of resources occupied by the second partial control information, where the user terminal is represented by the mapping resource location information. And at the resource location, receiving the second part of the control information, and parsing the second part of the control information according to the number of resources occupied by the second part of the control information according to the format information.
  • the UE may refer to the format information provided in the foregoing embodiment, including the format information of the second partial control information and the number of resources occupied by the second partial control information, according to the second partial control information.
  • the receiving and analyzing embodiment introduced in the embodiment of at least one of the embodiments is not described herein, and the same advantageous effects can be achieved.
  • the received information included in the first partial control information further includes mapping resource location information of the second partial control information, so that the specific mapping resource location of the second partial control information may be indicated by the first partial control information.
  • the UE receives and parses the first partial control information included in the DCI by using a blind detection PDCCH, where the first partial control information includes a fixed information domain, and the information domain includes a second partial control included in the DCI.
  • Receiving information of the information the UE receives and parses the second partial control information according to the received information.
  • the first part of the control information includes a fixed information field, so that the UE does not need to perform blind detection according to multiple DCI formats, and the second partial control information can be parsed by using the received information included in the first partial control information, thereby reducing the blind detection of the UE.
  • an embodiment of the present disclosure provides another downlink control information transmission method, as shown in FIG. 10, including the following step 1001.
  • the network side device maps the first part of the control information and the second part of the control information of the DCI to the same PDCCH, where the first part of the control information includes a fixed information field, where the information field includes the first part of the DCI.
  • the second part controls the reception information of the information.
  • the first partial control information and the second partial control information included in the DCI may be that a complete DCI of the scheduling UE includes two independent transport blocks, that is, the first partial control information and the second partial control information.
  • the first part of the control information and the second part of the control information are transmitted on the same control channel, and the two are processed separately as two independent transmission blocks, for example, respectively adding a Cyclic Redundancy Check (CRC), channel coding, and Rate matching and more.
  • CRC Cyclic Redundancy Check
  • the first part of the control information includes an information field in which the fixed information field is a fixed information type.
  • the format of the second part of the control information is corresponding to at least one of the following: a service type scheduled by the network side device, a transmission mode scheduled by the network side device, or a terminal type scheduled by the network side device.
  • the network side device may carry different control information, that is, carry different format control information, in the second part of the control information according to the scheduled service type, the transmission mode, or the terminal type.
  • the receiving information includes at least one of: format information of the second partial control information, AL information of the PDCCH, and a quantity of resources occupied by the second partial control information.
  • the first partial control information and the second partial control information are transmitted by using different transport blocks, and the first partial control information and the second partial control information are channel-encoded, and the information bits are cascaded. .
  • the first partial control information and the second partial control information are mapped on the same group of consecutive CCEs.
  • the mapping resource location of the second partial control information is notified by the first partial control information, and the receiving information includes format information of the second partial control information, and further includes at least one of the following: The mapping resource location information of the second part of the control information and the number of resources occupied by the second part of the control information.
  • the present embodiment is an implementation manner of the network side device corresponding to the embodiment shown in FIG. 2, and a specific implementation manner of the embodiment may refer to the related description of the embodiment shown in FIG. This embodiment will not be described again.
  • the first part of the control information includes a fixed information field, so that the UE does not need to perform blind detection according to multiple DCI formats, and the second partial control information may be parsed by using the received information included in the first partial control information, thereby The number of blind detections of the UE is reduced, so as to reduce the complexity of blind detection of the UE receiving DCI and reduce the power consumption of the UE.
  • an embodiment of the present disclosure provides a UE.
  • the UE 1100 includes a blind detection module 1101 and a reception analysis module 1102.
  • the blind detection module 1101 is configured to receive and parse the first partial control information included in the DCI by using a blind detection PDCCH, where the first partial control information includes a fixed information domain, where the information domain includes a second partial control included in the DCI Information received.
  • the receiving parsing module 1102 is configured to receive and parse the second partial control information according to the received information.
  • the blind detection module 1101 is configured to receive and parse the first part of the control information included in the DCI by blindly detecting the PDCCH on the PDCCH candidate resource in the search space.
  • the UE parses the first partial control information independently of an AL of the PDCCH.
  • the first part of the control information includes an information field in which the fixed information field is a fixed information type.
  • the format of the second part of the control information corresponds to at least one of the following: a service type scheduled by the network side device, a transmission mode scheduled by the network side device, or a terminal type scheduled by the network side device.
  • the receiving information includes at least one of: format information of the second partial control information, AL information of the PDCCH, and a quantity of resources occupied by the second partial control information.
  • the receiving parsing module 1102 is configured to: if the receiving information includes the format of the second partial control information, receive the second partial control information, and try to parse the second partial control according to the format information according to the format information. Or the receiving parsing module 1102 is configured to: if the receiving information includes the format information of the second partial control information and the AL information of the PDCCH, receive the second partial control information, and according to the format information, according to the The AL information of the PDCCH parses the second part of control information, where the AL information includes an AL of the PDCCH, or the AL information indicates that the AL of the PDCCH is currently blindly detected by the user terminal to the first part.
  • the AL of the control information is used; or the receiving parsing module 1102 is configured to receive the second part of the control information if the received information includes the format of the second partial control information and the number of resources occupied by the second partial control information. And parsing the second partial control information according to the format information according to the number of resources occupied by the second partial control information.
  • the receiving parsing module 1102 is configured to: if the receiving information includes the AL information of the second partial control information, the AL according to the AL information attempts to detect, receive, and parse the first DCI format according to a possible DCI format.
  • the second part of the control information wherein the AL information includes an AL of the PDCCH, or the AL information indicates that the AL of the PDCCH is an AL that is currently blindly detected by the user terminal to use the first part of control information; or
  • the receiving parsing module 1102 is configured to detect, receive, and parse the number of resources occupied by the second partial control information according to a possible DCI format, if the received information includes the number of resources occupied by the second partial control information.
  • the second part controls the information.
  • the first partial control information and the second partial control information are mapped on the same group of consecutive CCEs.
  • the receiving parsing module 1102 is configured to receive and parse the second partial control information according to the received information on consecutive CCEs that receive the first partial control information.
  • the receiving information includes format information of the second partial control information, and further includes at least one of: mapping resource location information of the second partial control information and the second partial control information The number of resources; the receiving parsing module 1102 is configured to: if the receiving information includes the mapping resource location information of the second partial control information and the format information of the second partial control information, where the mapping resource location information is Receiving the second part of the control information and attempting to parse the second part of the control information according to the format information according to the format information; or the receiving and analyzing module 1102 is configured to: if the receiving information includes the second part The mapping resource location information of the control information, the format of the second partial control information, and the number of resources occupied by the second partial control information, and receiving the second partial control information at the resource location indicated by the mapping resource location information Parsing the second partial control according to the format information according to the number of resources occupied by the second partial control information Information.
  • the foregoing UE 1100 may be a UE in any of the embodiments of the method in the embodiments of the disclosure, and any implementation manner of the UE in the method embodiment in this disclosure may be used in this embodiment.
  • the above-mentioned UE1100 is implemented, and the same beneficial effects are achieved, and details are not described herein again.
  • the network side device 1200 includes: a transmission module 1201, configured to map the first partial control information and the second partial control information of the DCI to be transmitted on the same PDCCH, where the first partial control information includes fixed information. a domain, the information field including receiving information of the second partial control information included in the DCI.
  • the first part of the control information includes an information field in which the fixed information field is a fixed information type.
  • the format of the second part of the control information is corresponding to at least one of the following: a service type scheduled by the network side device, a transmission mode scheduled by the network side device, or a terminal type scheduled by the network side device.
  • the receiving information includes at least one of: format information of the second partial control information, AL information of the PDCCH, and a quantity of resources occupied by the second partial control information.
  • the first partial control information and the second partial control information are transmitted by using different transport blocks, and the first partial control information and the second partial control information are channel-encoded, and the information bits are cascaded. .
  • the first partial control information and the second partial control information are mapped on the same group of consecutive CCEs.
  • the mapping resource location of the second partial control information is notified by the first partial control information, and the receiving information includes format information of the second partial control information, and further includes at least one of the following: The mapping resource location information of the second part of the control information and the number of resources occupied by the second part of the control information.
  • the network side device 1200 may be the network side device in any of the method embodiments in the embodiments of the disclosure, and any implementation manner of the receiving end in the method embodiment in the embodiment of the disclosure may be The network side device 1200 in this embodiment implements the same, and achieves the same beneficial effects, and details are not described herein again.
  • the UE includes a processor 1300, a transceiver 1310, a memory 1320, a user interface 1330, and a bus interface.
  • the processor 1300 is configured to read a program in the memory 1320, and perform the following process: receiving and parsing the first partial control information included in the DCI by using the transceiver 1310 by blindly detecting the PDCCH, where the first partial control information includes fixed information. a domain, the information field including reception information of the second partial control information included in the DCI; and the UE receiving and parsing the second partial control information by using the transceiver 1310 according to the received information.
  • the transceiver 1310 is configured to receive and transmit data under the control of the processor 1300.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 1300 and various circuits of memory represented by memory 1320.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 1310 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the user interface 1330 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 1300 is responsible for managing the bus architecture and general processing, and the memory 1320 can store data used by the processor 1300 in performing operations.
  • the receiving, by using the blind detection PDCCH, the first part of the control information that is included in the DCI includes: receiving and parsing the first part of the control information included in the DCI by blindly detecting the PDCCH on the PDCCH candidate resource in the search space.
  • the UE parses the first part of the control information independently of the AL of the downlink control channel.
  • the first part of the control information includes an information field in which the fixed information field is a fixed information type.
  • the format of the second part of the control information corresponds to at least one of the following: a service type scheduled by the network side device, a transmission mode scheduled by the network side device, or a terminal type scheduled by the network side device.
  • the receiving information includes at least one of: format information of the second partial control information, AL information of the PDCCH, and a quantity of resources occupied by the second partial control information.
  • the receiving and parsing the second partial control information according to the received information includes: if the received information includes format information of the second partial control information, receiving the second partial control information according to the The format information attempts to parse the second partial control information according to different ALs; or if the received information includes format information of the second partial control information and AL information of the PDCCH, receiving the second partial control information according to The format information parses the second partial control information according to the AL information of the PDCCH, where the AL information includes an AL of the PDCCH, or the AL information indicates that an AL of the PDCCH is current for the user terminal.
  • the receiving and parsing the second partial control information according to the received information includes: if the received information includes the AL information of the second partial control information, the AL indicated according to the AL information Trying to detect, receive, and parse the second partial control information according to a possible DCI format, where the AL information includes an AL of the PDCCH, or the AL information indicates that an AL of the PDCCH is currently blind to the user terminal. Detecting the AL of the first part of the control information; or if the received information includes the number of resources occupied by the second part of the control information, detecting the number of resources occupied by the second part of the control information according to a possible DCI format Receiving and parsing the second part of control information.
  • the first partial control information and the second partial control information are mapped on the same group of consecutive CCEs.
  • Receiving and parsing the second partial control information according to the received information comprising: receiving and parsing the second partial control information according to the received information on consecutive CCEs that receive the first partial control information .
  • the receiving information includes format information of the second partial control information, and further includes at least one of: mapping resource location information of the second partial control information and the second partial control information The number of resources.
  • Receiving and parsing the second partial control information according to the received information including: if the received information includes mapping resource location information of the second partial control information and format information of the second partial control information, Receiving, at the resource location indicated by the mapping resource location information, receiving the second partial control information and attempting to parse the second partial control information according to the format information according to the format information; or if the receiving information includes the second The mapping resource location information of the partial control information, the format of the second partial control information, and the number of resources occupied by the second partial control information, and receiving the second partial control information on the resource location indicated by the mapping resource location information And parsing the second partial control information according to the format information according to the number of resources occupied by the second partial control information.
  • the UE may be the UE in any of the method embodiments in the embodiments of the disclosure, and any implementation manner of the sending end in the method embodiment in the embodiment of the disclosure may be used in this embodiment.
  • the foregoing UE implements and achieves the same beneficial effects, and details are not described herein again.
  • the network side device includes a processor 1400, a transceiver 1410, a memory 1420, a user interface 1430, and a bus interface.
  • the processor 1400 is configured to read a program in the memory 1420, and perform the following process: mapping, by the transceiver 1410, the first partial control information and the second partial control information of the DCI to the same PDCCH for transmission, where the first partial control information A fixed information field is included, the information field including receiving information of the second partial control information included in the DCI.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 1400 and various circuits of memory represented by memory 1420.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 1410 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the user interface 1430 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 1400 is responsible for managing the bus architecture and general processing, and the memory 1420 can store data used by the processor 1400 in performing operations.
  • the first part of the control information includes an information field in which the fixed information field is a fixed information type.
  • the format of the second part of the control information is corresponding to at least one of the following: a service type scheduled by the network side device, a transmission mode scheduled by the network side device, or a terminal type scheduled by the network side device.
  • the receiving information includes at least one of: format information of the second partial control information, AL information of the PDCCH, and a quantity of resources occupied by the second partial control information.
  • the first partial control information and the second partial control information are transmitted by using different transport blocks, and the first partial control information and the second partial control information are channel-encoded, and the information bits are cascaded. .
  • the first partial control information and the second partial control information are mapped on the same group of consecutive CCEs.
  • the mapping resource location of the second partial control information is notified by the first partial control information, and the receiving information includes format information of the second partial control information, and further includes at least one of the following: The mapping resource location information of the second part of the control information and the number of resources occupied by the second part of the control information.
  • the network side device may be the network side device in any of the method embodiments in the embodiment of the disclosure, and any implementation manner of the network side device in the method embodiment in the embodiment of the disclosure may be used. It is implemented by the above-mentioned transmission node in this embodiment, and achieves the same beneficial effects, and details are not described herein again.
  • the disclosed method and apparatus may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.
  • each functional unit in various embodiments of the present disclosure may be integrated into one processing unit, or each unit may be physically included separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
  • the above software functional unit is stored in a storage medium and includes a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform part of the steps of the transceiving method of the various embodiments of the present disclosure.
  • 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, and the program code can be stored. Medium.

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Abstract

L'invention concerne un procédé de transmission de DCI, un terminal utilisateur et un dispositif du côté du réseau. Le procédé comprend les étapes suivantes : au moyen d'une détection aveugle PDCCH, un terminal d'utilisateur reçoit et analyse des informations de commande de premier partie incluses dans des DCI, les informations de commande de première partie comprenant un domaine d'informations fixe, le domaine d'informations comprenant des informations de réception d'informations de commande de seconde partie incluses dans les DCI ; selon les informations de réception, le terminal d'utilisateur reçoit et analyse les informations de commande de seconde partie.
PCT/CN2018/076492 2017-01-06 2018-02-12 Procédé de transmission de dci, terminal utilisateur et dispositif côté réseau Ceased WO2018127241A1 (fr)

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CN201710010099.7A CN108282291B (zh) 2017-01-06 2017-01-06 一种dci传输方法、ue和网络侧设备
CN201710010099.7 2017-01-06

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WO2021062612A1 (fr) * 2019-09-30 2021-04-08 华为技术有限公司 Procédé et appareil de communication

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CN110830157B (zh) * 2018-08-10 2021-01-26 维沃移动通信有限公司 传输控制信息的方法和装置
ES2941727T3 (es) * 2018-10-30 2023-05-25 Beijing Xiaomi Mobile Software Co Ltd Método y aparatos de recepción y de transmisión de información de control de enlace descendente
CN114172626A (zh) * 2019-01-11 2022-03-11 华为技术有限公司 信息传输的方法和通信装置
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