WO2023102856A1 - 一种确定和接收下行控制信息的方法、装置、设备及存储介质 - Google Patents

一种确定和接收下行控制信息的方法、装置、设备及存储介质 Download PDF

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Publication number
WO2023102856A1
WO2023102856A1 PCT/CN2021/136886 CN2021136886W WO2023102856A1 WO 2023102856 A1 WO2023102856 A1 WO 2023102856A1 CN 2021136886 W CN2021136886 W CN 2021136886W WO 2023102856 A1 WO2023102856 A1 WO 2023102856A1
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Prior art keywords
dci
search space
pei
paging
field
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PCT/CN2021/136886
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English (en)
French (fr)
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付婷
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北京小米移动软件有限公司
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Priority to PCT/CN2021/136886 priority Critical patent/WO2023102856A1/zh
Priority to CN202180004468.6A priority patent/CN116584132A/zh
Publication of WO2023102856A1 publication Critical patent/WO2023102856A1/zh

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    • 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
    • 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
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present disclosure relates to the technical field of wireless communication, and in particular to a method, device, device and storage medium for determining and receiving downlink control information.
  • Radio Resource Control-IDLE Radio Resource Control-IDLE
  • RRC-IDLE Radio Resource Control inactive state
  • Radio Resource Control-INACTIVE Radio Resource Control-INACTIVE
  • RRC-INACTIVE the main behavior of the user equipment
  • the Paging message is carried in the Physical Downlink Shared channel (PDSCH), and needs to be downlink control information (DCI) scrambled by the Paging-Radio Network Temporary Identity P-RNTI (that is, paging DCI) for scheduling.
  • DCI downlink control information
  • Paging Occasion, PO For a UE, its corresponding paging occasion (Paging Occasion, PO) occurs periodically.
  • the radio frame where the paging opportunity is located is a paging frame (Paging Frame, PF).
  • the UE In the existing protocol, the UE needs to wake up in each paging cycle for synchronization and blindly check whether there is its own paging downlink control information (Paging Downlink Control Information, Paging DCI) in its corresponding paging occasion.
  • Paging DCI paging Downlink Control Information
  • the base station can send a paging early indication (PEI) for the terminal.
  • PEI paging early indication
  • the mechanism adopted is that if the UE receives the PEI corresponding to the UE, and the PEI instructs the UE to wake up, the UE needs to wake up before the PO corresponding to the PEI to monitor the paging message.
  • PEI indicates that the UE does not wake up, or the UE does not receive the corresponding PEI, the UE does not need to wake up, that is, the UE does not need to monitor the PO corresponding to the PEI.
  • PEI is carried in the form of DCI. This requires determining the number of bits of the DCI carrying the PEI.
  • the present disclosure provides a method, device, device and storage medium for determining and receiving downlink control information.
  • a method for determining downlink control information DCI which is executed by a network device, including:
  • the number of bits of the DCI used to carry the paging advance indication PEI is determined, where the first search space is a search space for transmitting the DCI used to carry the PEI.
  • the determining the number of bits of the DCI used to carry the PEI based on the first search space includes at least one of the following:
  • the first search space being a paging search space, determine that the number of bits of the DCI used to carry the PEI is equal to the number of bits of the paging downlink control information Paging DCI;
  • the number of bits of the DCI used to carry the PEI is equal to or smaller than the number of bits of the Paging DCI.
  • the determining the number of bits of the DCI used to carry the PEI based on the first search space includes at least one of the following:
  • the DCI used to carry the PEI includes a first field, and includes any N fields in a second field, a third field, and a fourth field, where N is Positive integer, and 0 ⁇ N ⁇ 3;
  • the DCI used to carry the PEI includes the first field, and includes any M fields in the second field and the third field, and M is a positive integer , and 0 ⁇ M ⁇ 2;
  • the first field is a paging indication field
  • the second field is a tracking pilot availability indication field
  • the third field is other information fields
  • the fourth field is a reserved bit field.
  • the method also includes:
  • the sending the DCI for carrying the PEI to the user equipment through the first search space includes:
  • the first RNTI is different from the second RNTI, and the second RNTI is used to scramble the channel for transmitting the Paging DCI.
  • the first RNTI is a paging advance indication-radio network temporary identifier PEI-RNTI.
  • the method also includes:
  • the first information field is used to distinguish the DCI used to bear the PEI from the Paging DCI.
  • the method also includes:
  • the first search space is determined.
  • a method for receiving downlink control information DCI which is executed by a user equipment, including:
  • the number of bits of the DCI for carrying the PEI is determined based on the first search space, and the first search space is a search space for transmitting the DCI for carrying the PEI.
  • the number of bits of the DCI used to carry the PEI is equal to the number of bits of the paging downlink control information Paging DCI;
  • the number of bits of the DCI used to carry the PEI is equal to or smaller than the number of bits of the Paging DCI.
  • the DCI used to carry the PEI in response to the fact that the first search space is a paging search space, includes a first field, and includes any N of the second field, the third field, and the fourth field. fields, N is a positive integer, and 0 ⁇ N ⁇ 3;
  • the DCI used to carry the PEI includes the first field, and includes any M fields in the second field and the third field, where M is a positive integer, And 0 ⁇ M ⁇ 2;
  • the first field is a paging indication field
  • the second field is a tracking pilot availability indication field
  • the third field is other information fields
  • the fourth field is a reserved bit field.
  • the receiving the DCI sent by the network device for carrying the PEI through the first search space includes:
  • the first search space is a paging search space
  • using a first radio network temporary identifier RNTI to descramble and transmit a DCI channel for carrying PEI;
  • the first RNTI is different from the second RNTI, and the second RNTI is used to descramble the channel for transmitting the Paging DCI.
  • the first RNTI is a paging advance indication-radio network temporary identifier PEI-RNTI.
  • the first information field in the DCI for carrying the PEI includes a first information bit
  • the first information field is used to distinguish the DCI used to bear the PEI from the Paging DCI.
  • an apparatus for determining downlink control information DCI which is applied to a network device, including:
  • the processing module is configured to determine the number of bits of the DCI used to carry the paging advance indication PEI based on a first search space, where the first search space is a search space for transmitting the DCI used to carry the PEI.
  • an apparatus for receiving downlink control information DCI, which is applied to user equipment including:
  • the receiving module is configured to receive the DCI sent by the network device for carrying the paging advance indication PEI through the first search space;
  • the number of bits of the DCI for carrying the PEI is determined based on the first search space, and the first search space is a search space for transmitting the DCI for carrying the PEI.
  • a network side device including:
  • memory for storing processor-executable instructions
  • the processor is configured to execute executable instructions in the memory to implement the steps of the method for determining the downlink control information DCI above.
  • a mobile terminal including:
  • memory for storing processor-executable instructions
  • the processor is configured to execute executable instructions in the memory to implement the steps of the above method for receiving downlink control information DCI.
  • a non-transitory computer-readable storage medium on which executable instructions are stored.
  • the executable instructions are executed by a processor, the above-mentioned method for determining downlink control information DCI or Steps of the above method for receiving downlink control information DCI.
  • the number of bits of the DCI used to carry the PEI is determined based on different conditions of the search space for transmitting the DCI used to carry the PEI, so that the determination of the number of bits can reduce blind detection overhead or improve detection performance.
  • Fig. 1 is a flowchart showing a method for determining DCI according to an exemplary embodiment
  • Fig. 2 is a flowchart showing a method for determining DCI according to an exemplary embodiment
  • Fig. 3 is a flowchart showing a method for determining DCI according to an exemplary embodiment
  • Fig. 4 is a flow chart showing a method for determining DCI according to an exemplary embodiment
  • Fig. 5 is a flow chart showing a method for receiving DCI according to an exemplary embodiment
  • Fig. 6 is a block diagram of a device for determining DCI according to an exemplary embodiment
  • Fig. 7 is a block diagram of a device for receiving DCI according to an exemplary embodiment
  • Fig. 8 is a structural diagram of a device for receiving DCI according to an exemplary embodiment
  • Fig. 9 is a structural diagram of an apparatus for determining DCI according to an exemplary embodiment.
  • an embodiment of the present disclosure may include multiple steps; for the convenience of description, these steps are numbered; however, these numbers do not limit the execution time slots and execution order between the steps; these steps It can be implemented in any order, which is not limited by the embodiments of the present disclosure.
  • DCI carrying PEI is tentatively designated as DCI format 2-7.
  • the Paging DCI size can be 37/39/41/43bit.
  • the PEI DCI size does not exceed the Paging DCI size.
  • the network device in the present disclosure may be a base station, and the user equipment may be a terminal.
  • FIG. 1 is a flowchart of a method for determining DCI according to an exemplary embodiment. As shown in Fig. 1, the method includes:
  • Step 101 Determine the number of bits of the DCI used to carry the paging advance indication PEI based on a first search space, where the first search space is a search space for transmitting the DCI used to carry the PEI.
  • the network device determines the number of bits of the DCI used to carry the PEI based on the search space for transmitting the DCI used to carry the PEI. That is, different search spaces for transmitting the DCI used to bear the PEI will result in different bit numbers of the DCI used to bear the PEI.
  • the number of bits of the DCI for carrying the PEI is determined based on different conditions of the search space for transmitting the DCI for carrying the PEI, so that the determination of the number of bits can reduce blind detection overhead or improve detection performance.
  • the network device determines, based on the first search space, that the number of bits of the DCI used to carry the PEI is equal to the number of bits of the paging downlink control information Paging DCI.
  • the number of bits of the DCI used to bear the PEI is equal to the number of bits of the Paging DCI, which can reduce the blind detection overhead.
  • the user equipment needs to monitor the DCI for carrying the PEI (that is, the PEI DCI) and Paging DCI. If the DCI used to carry the PEI and the Paging DCI have the same number of bits, then the user equipment only needs to use one DCI size assumption value (size assumption) for blind detection and decoding during blind detection, and does not need to use two DCI size assumptions separately Perform blind detection decoding.
  • the network device determines, based on the first search space, that the number of bits of the DCI used to carry the PEI is equal to or smaller than the number of bits of the Paging DCI.
  • the number of bits of the DCI used to carry the PEI is equal to or smaller than the number of bits of the Paging DCI, which is beneficial to improve detection performance.
  • the DCI and Paging DCI used to carry PEI are transmitted in different search spaces.
  • the user equipment uses the Paging DCI size assumption for blind detection; when used to carry PEI
  • the search space for PEI is not the paging search space, and the user equipment uses the PEI DCI size assumption to perform blind detection.
  • the size of the DCI used to carry the PEI and the size of the paging DCI do not need to be aligned, so for the DCI used to carry the PEI and the Paging DCI, the two DCI size assumptions used for blind detection do not have to be the same.
  • the size of the DCI used to carry the PEI can be made as small as possible to improve detection performance.
  • the network device determines that the DCI used to carry the PEI includes the first field, and includes the second field, the third field, and the second field.
  • N is a positive integer, and 0 ⁇ N ⁇ 3; among them, the first field is the paging indication field, and the second field is the Tracking Reference Signal (TRS) ) availability indication field (availability indication field), the third field is other information fields, and the fourth field is a reserved bit field.
  • TRS Tracking Reference Signal
  • the number of bits of the PEI DCI is equal to the number of bits of the Paging DCI
  • the number of bits of the PEI DCI is the number of bits of the fields included in the DCI used to carry the PEI Sum.
  • the network device determines that the DCI used to carry the PEI includes a first field, a second field, a third field, and a first field. Four fields, and the sum of the bits of the first field, the second field, the third field, and the fourth field is equal to the bit number of the Paging DCI.
  • the network device determines, based on the first search space, that the DCI used to carry the PEI includes a first field, a second field, and a third field, and The sum of the bits of the first field, the second field, and the third field is equal to the bit number of the Paging DCI.
  • the network device determines, based on the first search space, that the DCI used to carry the PEI includes a first field, a second field, and a fourth field, and The sum of the bits of the first field, the second field, and the fourth field is equal to the bit number of the Paging DCI.
  • the DCI used to carry the PEI must include the above-mentioned first field, and the second field, the third field, and the fourth field are not required, but can be adjusted according to actual needs. That is to say, the content included in the DCI carrying the PEI must have a paging indication field, which is used to indicate whether there is paging in the corresponding PO. There may also be a TRS availability indication field, which is used to indicate whether there is TRS pilot information. In addition, there may be other information fields, which may exist in the future for the transmission of other information, such as a field for transmitting short messages, where the short message can be used to notify whether there is a system message update, whether there is Early warning information such as tsunami and earthquake.
  • the type of information transmitted by the other information field is not limited to one type.
  • the other information field may also include fields for transmitting other types of information in addition to the field for transmitting short messages.
  • the fourth field is a reserved bit field, which has a filling function, that is, when the sum of the bits of the first field, the second field, and the third field is less than the number of bits of the paging DCI, the DCI used to carry the PEI can be made by filling the bits
  • the number of bits is equal to the number of bits of the Paging DCI, so as to achieve the purpose of reducing the blind detection overhead when the DCI used to carry the PEI and the Paging DCI are transmitted in the same search space.
  • the fourth field is not needed.
  • the network device determines that the DCI for carrying PEI includes the first field and includes the second field based on the first search space and any M fields in the third field, M is a positive integer, and 0 ⁇ M ⁇ 2; wherein, the first field is a paging indication field, the second field is a tracking pilot availability indication field, and the third field is an additional information field.
  • the network device determines based on the first search space that the DCI used to carry the PEI includes a first field, a second field, and a third field, and the first The sum of the bits of the field, the second field, and the third field is less than or equal to the bit number of the Paging DCI. That is to say, when the first search space is not a paging search space, the number of bits of the PEI DCI is less than or equal to the number of bits of the Paging DCI, and the number of bits of the PEI DCI is the bit of the field included in the DCI used to carry the PEI sum of numbers.
  • the network device determines based on the first search space that the DCI used to carry the PEI includes the first field and the second field, and the first field and the The sum of the bits of the second field is less than or equal to the bits of the Paging DCI.
  • the network device determines based on the first search space that the DCI used to carry the PEI includes the first field and the third field, and the first field and the The total number of bits in the third field is less than or equal to the number of bits in the Paging DCI.
  • the DCI for carrying the PEI and the Paging DCI are transmitted in different search spaces, the DCI for carrying the PEI does not need to include padding fields to align with the size of the Paging DCI.
  • the size of the DCI carrying the PEI can be made as small as possible to improve detection performance.
  • FIG. 2 is a flowchart of a method for determining DCI according to an exemplary embodiment. As shown in Fig. 2, the method includes:
  • Step 201 based on the first search space, determine the number of bits of the DCI used to carry the paging advance indication PEI, the first search space is the search space for transmitting the DCI used to carry the PEI;
  • Step 202 generating the DCI for carrying the PEI
  • Step 203 Send the DCI for carrying the PEI to the user equipment through the first search space.
  • the network device determines the number of bits of the DCI used to carry the PEI based on the search space for transmitting the DCI used to carry the PEI, and then generates the DCI used to carry the PEI based on the determined number of bits, and uses the first search space, and send the DCI used to bear the PEI to the user equipment.
  • the network device determines that the number of bits of the DCI used to bear the PEI is equal to the number of bits of the Paging DCI, and generates the DCI used to bear the PEI. Then generate the DCI for carrying the PEI based on the determined number of bits, and send the DCI for carrying the PEI to the user equipment through the paging search space, wherein the DCI for carrying the PEI is scrambled and transmitted by using the first radio network temporary identifier RNTI DCI channel.
  • the first RNTI is different from the second RNTI, and the second RNTI is used to scramble the channel for transmitting the Paging DCI.
  • the network device determines that the number of bits of the DCI used to bear the PEI is equal to the number of bits of the Paging DCI, and generates the DCI used to bear the PEI. Then generate the DCI for carrying the PEI based on the determined number of bits, and send the DCI for carrying the PEI to the user equipment through the paging search space, where the paging advance indication-radio network temporary indicator PEI-RNTI is used to scramble the transmission
  • the channel used to carry the DCI of the PEI is different from P-RNTI, and P-RNTI is used to scramble the channel for transmitting Paging DCI.
  • Fig. 1 is a flow chart of a method for determining DCI according to an exemplary embodiment. As shown in Fig. 3, the method includes:
  • Step 301 based on the first search space, determine the number of bits of the DCI used to carry the paging advance indication PEI, the first search space is the search space for transmitting the DCI used to carry the PEI;
  • Step 302 in response to the first search space being a paging search space, configuring the first information field in the DCI for carrying the PEI to include a first information bit;
  • the first information field is used to distinguish the DCI used to bear the PEI from the Paging DCI.
  • the network device determines that the number of bits of the DCI used to carry the PEI is equal to the number of bits of the Paging DCI based on the search space for transmitting the DCI used to carry the PEI as a paging search space, and then configures the DCI used to carry the PEI
  • the first information field in contains a first information bit, and the first information field is used to distinguish the DCI used to bear the PEI from the Paging DCI.
  • the network device determines that the number of bits of the DCI used to carry the PEI is equal to the number of bits of the Paging DCI based on the search space for transmitting the DCI used to carry the PEI as a paging search space, and then configures the DCI used to carry the PEI
  • the first information field in contains the first information bit.
  • the first information field includes 1 bit, and the first information bit is 0, indicating that the DCI is DCI for carrying the PEI. When 1 bit of the first information field is 1, it indicates that the DCI is a paging DCI.
  • the number of bits in the first information field may be other values.
  • FIG. 4 is a flowchart of a method for determining DCI according to an exemplary embodiment. As shown in Fig. 4, the method includes:
  • Step 401 determining the first search space
  • Step 402 Determine the number of bits of the DCI used to carry the paging advance indication PEI based on the first search space, where the first search space is a search space for transmitting the DCI used to carry the PEI.
  • the network device determines that the search space used to transmit the DCI carrying the PEI is a paging search space, and in response to the fact that the search space used to carry the DCI carrying the PEI is a paging search space, determine the DCI used to carry the PEI
  • the number of bits is equal to the number of bits of Paging DCI.
  • the network device determines that the search space used to transmit the DCI for carrying the PEI is not a paging search space, and in response to the fact that the search space for the DCI carrying the PEI is not a paging search space, determines that the DCI used for carrying the PEI is not a paging search space.
  • the number of bits is less than or equal to the number of bits of the Paging DCI.
  • the number of bits of the DCI for carrying the PEI is determined based on different conditions of the search space for transmitting the DCI for carrying the PEI, so that the determination of the number of bits can reduce blind detection overhead or improve detection performance.
  • FIG. 5 is a flowchart of a method for determining DCI according to an exemplary embodiment. As shown in Fig. 5, the method includes:
  • Step 501 through the first search space, receive the DCI sent by the network device for carrying the paging advance indication PEI;
  • the number of bits of the DCI for carrying the PEI is determined based on the first search space, and the first search space is a search space for transmitting the DCI for carrying the PEI.
  • the user equipment receives the DCI for carrying the PEI sent by the network device through the first search space, where the first search space is the search space for transmitting the DCI for carrying the PEI, and uses The number of bits of the DCI carrying the PEI is determined based on the first search space. That is, different search spaces for transmitting the DCI used to bear the PEI will result in different bit numbers of the DCI used to bear the PEI.
  • the first search space is a paging search space
  • DCI for carrying the PEI sent by the network device is received, wherein the number of bits of the DCI for carrying the PEI is equal to the paging downlink control Information Paging DCI bit number.
  • the DCI for carrying the paging advance indication PEI sent by the network device is received, wherein the number of bits of the DCI for carrying the PEI is equal to the paging The number of bits of the downlink control information Paging DCI.
  • the first DCI size assumption value is used to perform blind detection on the physical downlink control channel PDCCH.
  • the assumed value of the first DCI size is the same as the assumed value of the Paging DCI size,
  • the number of bits of the DCI used to bear the PEI is equal to the number of bits of the Paging DCI, which can reduce the blind detection overhead. This is because, when the DCI and the Paging DCI used to bear the PEI are transmitted in the same search space, that is, the paging search space, the user equipment needs to monitor the DCI and the Paging DCI used to bear the PEI in the paging search space. If the DCI used to carry the PEI and the Paging DCI have the same number of bits, then the user equipment only needs to use one DCI size assumption value (size assumption) for blind detection and decoding during blind detection, and does not need to use two DCI size assumptions separately Perform blind detection decoding.
  • DCI size assumption value size assumption
  • the DCI for carrying the paging advance indication PEI sent by the network device is received, wherein the number of bits of the DCI for carrying the PEI is equal to or less than the The number of bits of the Paging DCI.
  • DCI for carrying a paging advance indication PEI sent by the network device is received, wherein the number of bits of the DCI for carrying the PEI is less than or equal to The number of bits of the paging downlink control information Paging DCI.
  • the second DCI size assumption value is used to perform blind detection on the physical downlink control channel PDCCH.
  • the assumed value of the second DCI size is the same as or different from the assumed value of the Paging DCI size.
  • the number of bits of the DCI used to carry the PEI is equal to or smaller than the number of bits of the Paging DCI, which is beneficial to improve detection performance. This is because the DCI and Paging DCI used to carry the PEI are transmitted in different search spaces.
  • the Paging DCI is transmitted in the paging search space
  • the user equipment uses the Paging DCI size assumption to perform blind detection; when the DCI carrying the PEI When transmitting in the search space used for PEI, the search space used for PEI is not the paging search space, and the user equipment uses PEI DCI size assumption to perform blind detection.
  • the size of the DCI used to carry the PEI and the size of the paging DCI do not need to be aligned, so for the DCI used to carry the PEI and the Paging DCI, the two DCI size assumptions used for blind detection do not have to be the same.
  • the size of the DCI used to carry the PEI can be made as small as possible to improve detection performance.
  • the DCI for carrying PEI in response to the first search space being a paging search space, includes a first field, and includes any N of the second field, the third field, and the fourth field fields, N is a positive integer, and 0 ⁇ N ⁇ 3; wherein, the first field is a paging indication field, and the second field is a tracking pilot (Tracking Reference Signal, TRS) availability indication field (availability indication field), the third field is other information fields, and the fourth field is a reserved bit field.
  • TRS Track Reference Signal
  • the user equipment receives the DCI sent by the network equipment for carrying the paging advance indication PEI through the first search space.
  • the DCI for carrying the PEI includes a first field, a second field, a third field, and a fourth field, and the first field, the second field, the third field, and the fourth field The sum of the bits of the field is equal to the bits of the Paging DCI.
  • the user equipment receives the DCI sent by the network equipment for carrying the paging advance indication PEI through the first search space.
  • the DCI used to carry the PEI includes a first field, a second field, and a third field, and the sum of the bits of the first field, the second field, and the third field is equal to the Paging DCI The number of bits.
  • the user equipment receives the DCI sent by the network equipment for carrying the paging advance indication PEI through the first search space.
  • the DCI used to carry the PEI includes a first field, a second field, and a fourth field, and the sum of the bits of the first field, the second field, and the fourth field is equal to the Paging DCI The number of bits.
  • the content included in the DCI carrying the PEI must have a paging indication field, which is used to indicate whether there is paging in the corresponding PO.
  • a TRS availability indication field which is used to indicate whether there is TRS pilot information.
  • other information fields which may exist in the future for the transmission of other information, such as a field for transmitting short messages, where the short message can be used to notify whether there is a system message update, whether there is Early warning information such as tsunami and earthquake.
  • the fourth field is a reserved bit field, which has a filling function, that is, when the sum of the bits of the first field, the second field, and the third field is less than the number of bits of the paging DCI, the DCI used to carry the PEI can be made by filling the bits
  • the number of bits is equal to the number of bits of the Paging DCI, so as to achieve the purpose of reducing the blind detection overhead when the DCI used to carry the PEI and the Paging DCI are transmitted in the same search space.
  • the DCI used to carry the PEI in response to the fact that the first search space is not a paging search space, includes the first field and any M fields in the second field and the third field , M is a positive integer, and 0 ⁇ M ⁇ 2; wherein, the first field is a paging indication field, the second field is a tracking pilot availability indication field, and the third field is other information fields .
  • the user equipment receives the DCI sent by the network equipment for carrying the paging advance indication PEI through the first search space.
  • the DCI used to carry the PEI includes a first field, a second field, and a third field, and the sum of the bits of the first field, the second field, and the third field is less than the Paging DCI The number of bits.
  • the user equipment receives the DCI sent by the network equipment for carrying the paging advance indication PEI through the first search space.
  • the DCI used to carry the PEI includes a first field, a second field, and a third field, and the sum of the bits of the first field, the second field, and the third field is equal to the Paging DCI The number of bits.
  • the user equipment receives the DCI sent by the network equipment for carrying the paging advance indication PEI through the first search space.
  • the DCI used to carry the PEI includes a first field and a second field, and the sum of bits in the first field and the second field is less than the number of bits in the Paging DCI.
  • the user equipment receives the DCI sent by the network equipment for carrying the paging advance indication PEI through the first search space.
  • the DCI used to carry the PEI includes a first field and a third field, and the sum of bits in the first field and the third field is less than the number of bits in the Paging DCI.
  • the DCI for carrying the PEI and the Paging DCI are transmitted in different search spaces, the DCI for carrying the PEI does not need to include padding fields to align with the size of the Paging DCI.
  • the size of the DCI carrying the PEI can be made as small as possible to improve detection performance.
  • An embodiment of the present disclosure provides a method for receiving downlink control information DCI, and the method is executed by a user equipment.
  • the method may be executed independently, or may be executed in combination with any other embodiment of the embodiments of the present disclosure.
  • the method includes:
  • the DCI used to carry the paging advance indication PEI sent by the network device is received, wherein the number of bits of the DCI used to carry the PEI is determined based on the first search space, and the first The search space is a search space for transmitting the DCI used to carry the PEI;
  • the receiving the DCI for carrying the PEI sent by the network device through the first search space includes:
  • the first search space is a paging search space
  • using a first radio network temporary identifier RNTI to descramble and transmit a channel for carrying DCI of PEI, wherein the first RNTI is different from the second RNTI, and the first RNTI
  • Two RNTIs are used to descramble the channel for transmitting Paging DCI.
  • the user equipment receives the DCI sent by the network equipment for carrying the paging advance indication PEI through the first search space.
  • the first search space is a search space for transmitting the DCI used to bear the PEI, and the number of bits of the DCI used to bear the PEI is determined based on the first search space.
  • Responding to the fact that the first search space is a paging search space using the first radio network temporary identifier RNTI to descramble and transmit the channel for carrying the DCI of the PEI, wherein the first RNTI is different from the second RNTI, and the second RNTI is used for descrambling Channel for transmitting Paging DCI.
  • the user equipment receives the DCI sent by the network equipment for carrying the paging advance indication PEI through the first search space.
  • the first search space is a search space for transmitting the DCI used to bear the PEI, and the number of bits of the DCI used to bear the PEI is determined based on the first search space.
  • the channel used to carry the DCI of the PEI is descrambled and transmitted using the paging advance indication-radio network temporary identifier PEI-RNTI, wherein the PEI-RNTI is different from the P-RNTI, and the P-RNTI is different from the P-RNTI.
  • RNTI is used to scramble the channel for transmitting Paging DCI.
  • An embodiment of the present disclosure provides a method for receiving downlink control information DCI, and the method is executed by a user equipment.
  • the method may be executed independently, or may be executed in combination with any other embodiment of the embodiments of the present disclosure.
  • the method includes:
  • the number of bits of the DCI for carrying the PEI is determined based on the first search space, and the first search space is a search space for transmitting the DCI for carrying the PEI;
  • the first information field in the DCI used to bear PEI includes a first information bit, and the first information field is used to distinguish the PEI's DCI and Paging DCI.
  • the user equipment receives the DCI sent by the network equipment for carrying the paging advance indication PEI through the first search space.
  • the first search space is a search space for transmitting the DCI used to bear the PEI, and the number of bits of the DCI used to bear the PEI is determined based on the first search space.
  • the first information field in the DCI for carrying the PEI includes a first information bit, and the first information field is used to distinguish the DCI for carrying the PEI from the Paging DCI .
  • the user equipment receives the DCI sent by the network equipment for carrying the paging advance indication PEI through the first search space.
  • the first search space is a search space for transmitting the DCI used to bear the PEI, and the number of bits of the DCI used to bear the PEI is determined based on the first search space.
  • the first information field in the DCI for carrying the PEI includes a first information bit, and the first information bit is 0, which indicates that the DCI is the DCI for carrying the PEI.
  • 1 bit of the first information field is 1, it indicates that the DCI is a paging DCI.
  • PEI DCI and Paging DCI are distinguished through the first information field.
  • the first information field includes the first information bit of 1 bit, when the information bit is 1, it indicates that the DCI It is PEI DCI. When the information bit is 0, it indicates that this DCI is Paging DCI. Or, when the information bit is 0, it indicates that the DCI is a PEI DCI, and when the information bit is 1, it indicates that the DCI is a Paging DCI. It should be understood that methods for indicating and distinguishing other information domains and information bits are also within the protection scope of the present invention.
  • the first information field in the DCI for carrying PEI is different from the first information field in the Paging DCI , so as to distinguish the DCI used to carry the PEI from the Paging DCI.
  • An embodiment of the present disclosure provides an apparatus for determining downlink control information DCI, which is applied to a network device, as shown in FIG. 6 , including:
  • the processing module 601 is configured to determine the number of bits of the DCI used to carry the paging advance indication PEI based on a first search space, where the first search space is a search space for transmitting the DCI used to carry the PEI.
  • An embodiment of the present disclosure provides an apparatus for receiving downlink control information DCI, which is applied to user equipment, as shown in FIG. 7 , including:
  • the receiving module 701 is configured to receive the DCI sent by the network device for carrying the paging advance indication PEI through the first search space;
  • the number of bits of the DCI for carrying the PEI is determined based on the first search space, and the first search space is a search space for transmitting the DCI for carrying the PEI.
  • An embodiment of the present disclosure provides a network side device, including:
  • memory for storing processor-executable instructions
  • the processor is configured to execute executable instructions in the memory to implement the steps of the method for determining the downlink control information DCI above.
  • An embodiment of the present disclosure provides a mobile terminal, including:
  • memory for storing processor-executable instructions
  • the processor is configured to execute the executable instructions in the memory to implement the above steps of the method for receiving downlink control information DCI.
  • An embodiment of the present disclosure provides a non-transitory computer-readable storage medium on which executable instructions are stored.
  • the executable instructions are executed by a processor, the above-mentioned method for determining downlink control information DCI or the above-mentioned method for receiving downlink control information DCI is implemented. steps of the method.
  • Fig. 8 is a block diagram of an apparatus 800 for receiving downlink control information DCI according to an exemplary embodiment.
  • the apparatus 800 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, and the like.
  • device 800 may include one or more of the following components: processing component 802, memory 804, power supply component 806, multimedia component 808, audio component 810, input/output (I/O) interface 812, sensor component 814, and a communication component 816 .
  • the processing component 802 generally controls the overall operations of the device 800, such as those associated with display, telephone calls, data communications, camera operations, and recording operations.
  • the processing component 802 may include one or more processors 820 to execute instructions to complete all or part of the steps of the above method. Additionally, processing component 802 may include one or more modules that facilitate interaction between processing component 802 and other components. For example, processing component 802 may include a multimedia module to facilitate interaction between multimedia component 808 and processing component 802 .
  • the memory 804 is configured to store various types of data to support operations at the device 800 . Examples of such data include instructions for any application or method operating on device 800, contact data, phonebook data, messages, pictures, videos, and the like.
  • the memory 804 can be implemented by any type of volatile or non-volatile storage device or their combination, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic or Optical Disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read-only memory
  • EPROM erasable Programmable Read Only Memory
  • PROM Programmable Read Only Memory
  • ROM Read Only Memory
  • Magnetic Memory Flash Memory
  • Magnetic or Optical Disk Magnetic Disk
  • the power supply component 806 provides power to the various components of the device 800 .
  • Power components 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for device 800 .
  • the multimedia component 808 includes a screen that provides an output interface between the device 800 and the user.
  • the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user.
  • the touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may not only sense a boundary of a touch or swipe action, but also detect duration and pressure associated with the touch or swipe action.
  • the multimedia component 808 includes a front camera and/or a rear camera. When the device 800 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capability.
  • the audio component 810 is configured to output and/or input audio signals.
  • the audio component 810 includes a microphone (MIC) configured to receive external audio signals when the device 800 is in operation modes, such as call mode, recording mode and voice recognition mode. Received audio signals may be further stored in memory 804 or sent via communication component 816 .
  • the audio component 810 also includes a speaker for outputting audio signals.
  • the I/O interface 812 provides an interface between the processing component 802 and a peripheral interface module, which may be a keyboard, a click wheel, a button, and the like. These buttons may include, but are not limited to: a home button, volume buttons, start button, and lock button.
  • Sensor assembly 814 includes one or more sensors for providing status assessments of various aspects of device 800 .
  • the sensor component 814 can detect the open/closed state of the device 800, the relative positioning of components, such as the display and keypad of the device 800, and the sensor component 814 can also detect a change in the position of the device 800 or a component of the device 800 , the presence or absence of user contact with the device 800 , the device 800 orientation or acceleration/deceleration and the temperature change of the device 800 .
  • Sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact.
  • Sensor assembly 814 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications.
  • the sensor component 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor or a temperature sensor.
  • the communication component 816 is configured to facilitate wired or wireless communication between the apparatus 800 and other devices.
  • the device 800 can access wireless networks based on communication standards, such as WiFi, 2G or 3G, or a combination thereof.
  • the communication component 816 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel.
  • the communication component 816 also includes a near field communication (NFC) module to facilitate short-range communication.
  • NFC near field communication
  • the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, Infrared Data Association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology and other technologies.
  • RFID Radio Frequency Identification
  • IrDA Infrared Data Association
  • UWB Ultra Wideband
  • Bluetooth Bluetooth
  • apparatus 800 may be programmed by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable A gate array (FPGA), controller, microcontroller, microprocessor or other electronic component implementation for performing the methods described above.
  • ASICs application specific integrated circuits
  • DSPs digital signal processors
  • DSPDs digital signal processing devices
  • PLDs programmable logic devices
  • FPGA field programmable A gate array
  • controller microcontroller, microprocessor or other electronic component implementation for performing the methods described above.
  • non-transitory computer-readable storage medium including instructions, such as the memory 804 including instructions, which can be executed by the processor 820 of the device 800 to complete the above method.
  • the non-transitory computer readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like.
  • Fig. 9 is a block diagram of an apparatus 900 for determining downlink control information DCI according to an exemplary embodiment.
  • apparatus 900 may be provided as a base station.
  • apparatus 900 includes processing component 922, which further includes one or more processors, and memory resources represented by memory 932 for storing instructions executable by processing component 922, such as application programs.
  • the application program stored in memory 932 may include one or more modules each corresponding to a set of instructions.
  • the processing component 922 is configured to execute instructions to perform the above method for accessing an unlicensed channel.
  • the device 900 may also include a power supply component 926 configured to perform power management of the device 900, a wired or wireless network interface 950 configured to connect the device 900 to a network, and Input output (I/O) interface 959 .
  • the device 900 can operate based on an operating system stored in the memory 932, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM or the like.
  • the number of bits of the DCI used to carry the PEI is determined based on different conditions of the search space for transmitting the DCI used to carry the PEI, so that the determination of the number of bits can reduce blind detection overhead or improve detection performance.

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Abstract

本公开提供了一种确定和接收下行控制信息的方法、装置、设备及存储介质。该确定下行控制信息DCI的方法被网络设备执行，包括：基于第一搜索空间，确定用于承载寻呼预告指示PEI的DCI的bit数，所述第一搜索空间为传输用于承载PEI的DCI的搜索空间。采用该方法能够基于传输用于承载PEI的DCI的搜索空间的不同情况，来确定用于承载PEI的DCI的bit数，使得该bit数的确定能够降低盲检开销或提高检测性能。

Description

一种确定和接收下行控制信息的方法、装置、设备及存储介质 技术领域
本公开涉及无线通信技术领域，尤其涉及一种确定和接收下行控制信息的方法、装置、设备及存储介质。
背景技术
在终端处于无线资源控制空闲态(Radio Resource Control-IDLE，RRC-IDLE)/无线资源控制非激活态(Radio Resource Control-INACTIVE，RRC-INACTIVE)时，用户设备(User Equipment，UE)的主要行为就是要周期的监听寻呼(paging)消息，收到Paging消息后要进入无线资源控制连接态(Radio Resource Control-CONNECTED，RRC-CONNECTED)进行正常的通信。Paging消息承载在物理下行共享信道(Physical Downlink Shared channel，PDSCH)中，需要由寻呼无线网络临时标志(Paging-Radio Network Temporary Identity P-RNTI)加扰的下行控制信息(Downlink Control Information，DCI)(也即paging DCI)进行调度。对一个UE而言，其对应的寻呼时机(Paging Occasion，PO)是周期出现的。寻呼时机所在的无线帧是寻呼帧(Paging Frame，PF)。
在现有协议中，UE在每个寻呼周期中都需要醒来做同步并到自己对应的寻呼时机中盲检有没有自己的寻呼下行控制信息(Paging Downlink Control Information，Paging DCI)。在R17中，为了能在空闲态下节省终端能耗，基站可以为终端发送寻呼预告指示(Paging early indication，PEI)。在现有的PEI设计中，采用的机制是，如果UE收到了本UE对应的PEI，该PEI指示UE唤醒，则UE需要在PEI对应的PO之前醒来去监听寻呼消息。如果该PEI指示UE不唤醒，或者UE没有接收到对应的PEI，则UE不需要唤醒，也即UE不需要监听PEI对应的PO。PEI以DCI的形式承载。这就需要确定承载PEI的DCI的bit数。
发明内容
有鉴于此，本公开提供了一种确定和接收下行控制信息的方法、装置、设备及存储介质。
根据本公开实施例的第一个方面，提供一种确定下行控制信息DCI的方法，被网络设备执行，包括：
基于第一搜索空间，确定用于承载寻呼预告指示PEI的DCI的bit数，所述第一搜索空间为传输用于承载PEI的DCI的搜索空间。
在一实施方式中，所述基于第一搜索空间，确定用于承载PEI的DCI的bit数，包括以下至少一个：
响应于所述第一搜索空间是寻呼搜索空间，确定所述用于承载PEI的DCI的bit数等于寻呼下行控制信息Paging DCI的bit数；
响应于所述第一搜索空间不是寻呼搜索空间，确定所述用于承载PEI的DCI的bit数等于或小于所述Paging DCI的bit数。
在一实施方式中，所述基于第一搜索空间，确定用于承载PEI的DCI的bit数，包括以下至少一个：
响应于所述第一搜索空间是寻呼搜索空间，确定所述用于承载PEI的DCI包括第一字段，且包括第二字段、第三字段和第四字段中的任意N个字段，N为正整数，且0≤N≤3；
响应于所述第一搜索空间不是寻呼搜索空间，确定所述用于承载PEI的DCI包括所述第一字段，且包括第二字段和第三字段中的任意M个字段，M为正整数，且0≤M≤2；
其中，所述第一字段是寻呼指示字段，所述第二字段是跟踪导频可获得性指示字段，所述第三字段是其他信息字段，所述第四字段是预留比特字段。
在一实施方式中，所述方法还包括：
生成所述用于承载PEI的DCI；
通过所述第一搜索空间，向用户设备发送所述用于承载PEI的DCI。
在一实施方式中，所述通过所述第一搜索空间，向用户设备发送所述用于承载PEI的DCI，包括：
响应于所述第一搜索空间是寻呼搜索空间，采用第一无线网络临时标志RNTI加扰传输用于承载PEI的DCI的信道；
其中，所述第一RNTI不同于第二RNTI，所述第二RNTI用于加扰传输Paging DCI的信道。
在一实施方式中，所述第一RNTI为寻呼预告指示-无线网络临时标志PEI-RNTI。
在一实施方式中，所述方法还包括：
响应于所述第一搜索空间是寻呼搜索空间，配置所述用于承载PEI的DCI中的第一信 息域包含第一信息位；
其中，所述第一信息域用于区分所述用于承载PEI的DCI与Paging DCI。
在一实施方式中，所述方法还包括：
确定所述第一搜索空间。
根据本公开实施例的第二个方面，提供一种接收下行控制信息DCI的方法，被用户设备执行，包括：
通过第一搜索空间，接收网络设备发送的用于承载寻呼预告指示PEI的DCI；
其中，所述用于承载PEI的DCI的bit数是基于所述第一搜索空间确定的，所述第一搜索空间为传输用于承载PEI的DCI的搜索空间。
在一实施方式中，响应于所述第一搜索空间是寻呼搜索空间，所述用于承载PEI的DCI的bit数等于寻呼下行控制信息Paging DCI的bit数；
响应于所述第一搜索空间不是寻呼搜索空间，所述用于承载PEI的DCI的bit数等于或小于所述Paging DCI的bit数。
在一实施方式中，响应于所述第一搜索空间是寻呼搜索空间，所述用于承载PEI的DCI包括第一字段，且包括第二字段、第三字段和第四字段中的任意N个字段，N为正整数，且0≤N≤3；
响应于所述第一搜索空间不是寻呼搜索空间，所述用于承载PEI的DCI包括所述第一字段，且包括第二字段和第三字段中的任意M个字段，M为正整数，且0≤M≤2；
其中，所述第一字段是寻呼指示字段，所述第二字段是跟踪导频可获得性指示字段，所述第三字段是其他信息字段，所述第四字段是预留比特字段。
在一实施方式中，所述通过第一搜索空间，接收网络设备发送的用于承载PEI的DCI，包括：
响应于所述第一搜索空间是寻呼搜索空间，采用第一无线网络临时标志RNTI解扰传输用于承载PEI的DCI的信道；
其中，所述第一RNTI不同于第二RNTI，所述第二RNTI用于解扰传输Paging DCI的信道。
在一实施方式中，所述第一RNTI为寻呼预告指示-无线网络临时标志PEI-RNTI。
在一实施方式中，响应于所述第一搜索空间是寻呼搜索空间，所述用于承载PEI的DCI 中的第一信息域包含第一信息位；
其中，所述第一信息域用于区分所述用于承载PEI的DCI与Paging DCI。
根据本公开实施例的第三个方面，提供一种确定下行控制信息DCI的装置，应用于网络设备，包括：
处理模块，被配置为基于第一搜索空间，确定用于承载寻呼预告指示PEI的DCI的bit数，所述第一搜索空间为传输用于承载PEI的DCI的搜索空间。
根据本公开实施例的第四个方面，提供一种接收下行控制信息DCI的装置，应用于用户设备，包括：
接收模块，被配置为通过第一搜索空间，接收网络设备发送的用于承载寻呼预告指示PEI的DCI；
其中，所述用于承载PEI的DCI的bit数是基于所述第一搜索空间确定的，所述第一搜索空间为传输用于承载PEI的DCI的搜索空间。
根据本公开实施例的第五个方面，提供一种网络侧设备，包括：
处理器；
用于存储处理器可执行指令的存储器；
其中，所述处理器被配置为执行所述存储器中的可执行指令以实现上述确定下行控制信息DCI的方法的步骤。
根据本公开实施例的第六个方面，提供一种移动终端，包括：
处理器；
用于存储处理器可执行指令的存储器；
其中，所述处理器被配置为执行所述存储器中的可执行指令以实现上述接收下行控制信息DCI的方法的步骤。
根据本公开实施例的第七个方面，提供一种非临时性计算机可读存储介质，其上存储有可执行指令，该可执行指令被处理器执行时实现上述确定下行控制信息DCI的方法或者上述接收下行控制信息DCI的方法的步骤。
本公开的实施例提供的技术方案可以包括以下有益效果：
基于传输用于承载PEI的DCI的搜索空间的不同情况，来确定用于承载PEI的DCI的bit数，使得该bit数的确定能够降低盲检开销或提高检测性能。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本公开。
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此处所说明的附图用来提供对本公开实施例的进一步理解，构成本申请的一部分，本公开实施例的示意性实施例及其说明用于解释本公开实施例，并不构成对本公开实施例的不当限定。在附图中：
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本公开实施例的实施例，并与说明书一起用于解释本公开实施例的原理。
图1是根据一示例性实施例示出的一种确定DCI的方法的流程图；
图2是根据一示例性实施例示出的一种确定DCI的方法的流程图；
图3是根据一示例性实施例示出的一种确定DCI的方法的流程图；
图4是根据一示例性实施例示出的一种确定DCI的方法的流程图；
图5是根据一示例性实施例示出的一种接收DCI的方法的流程图；
图6是根据一示例性实施例示出的一种确定DCI的装置的框图；
图7是根据一示例性实施例示出的一种接收DCI的装置的框图；
图8是根据一示例性实施例示出的一种接收DCI的装置的结构图；
图9是根据一示例性实施例示出的一种确定DCI的装置的结构图。
具体实施方式
现结合附图和具体实施方式对本公开实施例进一步说明。
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同附图标记表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本公开实施例相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本公开的一些方面相一致的装置和方法的例子。
需要说明的是，本公开的一个实施例中可以包括多个步骤；为了便于描述，这些个步骤被进行了编号；但是这些编号并非是对步骤之间执行时隙、执行顺序的限定；这些步骤 可以以任意的顺序被实施，本公开实施例并不对此作出限定。
目前承载PEI的DCI暂定为DCI format 2-7。
根据不同的配置，如CORESET 0的频域资源块数量，以及是否是非授权频段(unlicensed band)，Paging DCI size可以是37/39/41/43bit。目前，PEI DCI size不超过Paging DCI size。
本公开中的网络设备可以是基站，用户设备可用是终端。
本公开实施例提供了一种确定下行控制信息DCI的方法，所述方法被网络设备执行。该方法可以独立被执行，也可以结合本公开实施例的任意一个其他实施例一起被执行。图1是根据一示例性实施例示出的一种确定DCI的方法的流程图，如图1所示，该方法包括：
步骤101，基于第一搜索空间，确定用于承载寻呼预告指示PEI的DCI的bit数，所述第一搜索空间为传输用于承载PEI的DCI的搜索空间。
在一个实施方式中，网络设备基于传输用于承载PEI的DCI的搜索空间，确定用于承载PEI的DCI的bit数。即，传输用于承载PEI的DCI的搜索空间不同，用于承载PEI的DCI的bit数也会不同。
在上述实施方式中，基于传输用于承载PEI的DCI的搜索空间的不同情况，来确定用于承载PEI的DCI的bit数，使得该bit数的确定能够降低盲检开销或提高检测性能。
在一个实施方式中，响应于第一搜索空间是寻呼搜索空间，网络设备基于该第一搜索空间，确定用于承载PEI的DCI的bit数等于寻呼下行控制信息Paging DCI的bit数。
在上述实施方式中，确定用于承载PEI的DCI的bit数等于Paging DCI的bit数，可以降低盲检开销。这是因为，当用于承载PEI的DCI和Paging DCI在同一个搜索空间，即寻呼搜索空间中传输时，用户设备就需要在寻呼搜索空间中监听用于承载PEI的DCI(即，PEI DCI)和Paging DCI。如果用于承载PEI的DCI和Paging DCI具有相同的bit数，那么用户设备在盲检时只需要使用一种DCI尺寸假设值(size assumption)进行盲检解码，不需要分别使用两种DCI size assumption进行盲检解码。
在一个实施方式中，响应于第一搜索空间不是寻呼搜索空间，网络设备基于该第一搜索空间，确定用于承载PEI的DCI的bit数等于或小于所述Paging DCI的bit数。
在上述实施方式中，确定用于承载PEI的DCI的bit数等于或小于所述Paging DCI的bit数，这有利于提高检测性能(detection performance)。这是因为，用于承载PEI的DCI和Paging DCI分别在不同的搜索空间中传输，当Paging DCI在寻呼搜索空间中传输时，用户设备使用Paging DCI size assumption进行盲检；当用于承载PEI的DCI在用于PEI的搜索空间中传输时，该用于PEI的搜索空间不是寻呼搜索空间，用户设备使用PEI DCI size assumption进行盲检。在这种情况下，用于承载PEI的DCI的尺寸与paging DCI的尺寸不需要做对齐，因此针对用于承载PEI的DCI和Paging DCI，进行盲检所采用的两种DCI size assumption不必相同。此情况下，可以使得用于承载PEI的DCI的尺寸尽量小，以提高检测性能。
在一个实施方式中，响应于第一搜索空间是寻呼搜索空间，网络设备基于该第一搜索空间，确定用于承载PEI的DCI包括第一字段，且包括第二字段、第三字段和第四字段中的任意N个字段，N为正整数，且0≤N≤3；其中，第一字段是寻呼指示字段(paging indication field)，第二字段是跟踪导频(Tracking Reference Signal，TRS)可获得性指示字段(availability indication field)，第三字段是其他信息字段，第四字段是预留比特字段。也就是说，当第一搜索空间是寻呼搜索空间时，PEI DCI的bit数与Paging DCI的bit数相等，并且PEI DCI的bit数即为用于承载PEI的DCI所包括的字段的bit数的总和。例如，在一个实施方式中，响应于第一搜索空间是寻呼搜索空间，网络设备基于该第一搜索空间，确定用于承载PEI的DCI包括第一字段、第二字段、第三字段和第四字段，且第一字段、第二字段、第三字段和第四字段的bit数总和等于Paging DCI的bit数。
例如，在一个实施方式中，响应于第一搜索空间是寻呼搜索空间，网络设备基于该第一搜索空间，确定用于承载PEI的DCI包括第一字段、第二字段和第三字段，且第一字段、第二字段和第三字段的bit数总和等于Paging DCI的bit数。
例如，在一个实施方式中，响应于第一搜索空间是寻呼搜索空间，网络设备基于该第一搜索空间，确定用于承载PEI的DCI包括第一字段、第二字段和第四字段，且第一字段、第二字段和第四字段的bit数总和等于Paging DCI的bit数。
应当理解，用于承载PEI的DCI一定包括上述第一字段，而第二字段、第三字段以及第四字段均不是必需的，而是可以根据实际需要调整。也就是说，承载PEI的DCI中包括的内容一定有paging indication field，用于指示对应的PO中有没有寻呼。还可能有TRS  availability indication field，用于指示有没有TRS导频的信息。此外，还可能有其他信息字段，该其他信息字段是将来可能会存在的用于传输其他信息的字段，例如传输短消息的字段，其中，短消息可以用于通知是否有系统消息更新，是否有海啸地震等预警信息。需要说明是，该其他信息字段传输的信息类型不限于一种，例如，其他信息字段除包括传输短消息的字段外，还可以包括传输其他类型信息的字段。第四字段是预留比特字段，具有填充功能，即，当第一字段、第二字段和第三字段的bit数总和小于paging DCI的bit数时，通过填充bit可以使得用于承载PEI的DCI的bit数等于Paging DCI的bit数，从而实现在用于承载PEI的DCI和Paging DCI在同一个搜索空间中传输的情况下，降低盲检开销的目的。而当第一字段、第二字段和第三字段的bit数总和与paging DCI的bit数相等时，则不需要该第四字段。
在一个实施方式中，响应于所述第一搜索空间不是寻呼搜索空间，网络设备基于该第一搜索空间，确定所述用于承载PEI的DCI包括所述第一字段，且包括第二字段和第三字段中的任意M个字段，M为正整数，且0≤M≤2；其中，第一字段是寻呼指示字段，第二字段是跟踪导频可获得性指示字段，第三字段是其他信息字段。
在一个实施方式中，响应于第一搜索空间不是寻呼搜索空间，网络设备基于该第一搜索空间，确定用于承载PEI的DCI包括第一字段、第二字段和第三字段，且第一字段、第二字段和第三字段的bit数总和小于或等于Paging DCI的bit数。也就是说，当第一搜索空间不是寻呼搜索空间时，PEI DCI的bit数小于或等于Paging DCI的bit数，并且PEI DCI的bit数即为用于承载PEI的DCI所包括的字段的bit数的总和。
例如，在一个实施方式中，响应于第一搜索空间不是寻呼搜索空间，网络设备基于该第一搜索空间，确定用于承载PEI的DCI包括第一字段和第二字段，且第一字段和第二字段的bit数总和小于或等于Paging DCI的bit数。
例如，在一个实施方式中，响应于第一搜索空间不是寻呼搜索空间，网络设备基于该第一搜索空间，确定用于承载PEI的DCI包括第一字段和第三字段，且第一字段和第三字段的bit数总和小于或等于Paging DCI的bit数。
在上述实施方式中，由于用于承载PEI的DCI和Paging DCI分别在不同的搜索空间中传输，因此用于承载PEI的DCI不需要包括填充字段来与Paging DCI的尺寸对齐。这种情况下，可以使得承载PEI的DCI的尺寸尽可能小，以提高检测性能。
本公开实施例提供了一种确定下行控制信息DCI的方法，所述方法被网络设备执行。该方法可以独立被执行，也可以结合本公开实施例的任意一个其他实施例一起被执行。图2是根据一示例性实施例示出的一种确定DCI的方法的流程图，如图2所示，该方法包括：
步骤201，基于第一搜索空间，确定用于承载寻呼预告指示PEI的DCI的bit数，所述第一搜索空间为传输用于承载PEI的DCI的搜索空间；
步骤202，生成所述用于承载PEI的DCI；
步骤203，通过所述第一搜索空间，向用户设备发送所述用于承载PEI的DCI。
在一个实施方式中，网络设备基于传输用于承载PEI的DCI的搜索空间，确定用于承载PEI的DCI的bit数，然后基于确定的bit数生成用于承载PEI的DCI，并通过第一搜索空间，向用户设备发送用于承载PEI的DCI。
在一个实施方式中，响应于所述第一搜索空间是寻呼搜索空间，网络设备确定用于承载PEI的DCI的bit数等于Paging DCI的bit数，并生成用于承载PEI的DCI。然后基于确定的bit数生成用于承载PEI的DCI，并通过寻呼搜索空间，向用户设备发送用于承载PEI的DCI，其中，采用第一无线网络临时标志RNTI加扰传输用于承载PEI的DCI的信道。其中，第一RNTI不同于第二RNTI，第二RNTI用于加扰传输Paging DCI的信道。
在一个实施方式中，响应于所述第一搜索空间是寻呼搜索空间，网络设备确定用于承载PEI的DCI的bit数等于Paging DCI的bit数，并生成用于承载PEI的DCI。然后基于确定的bit数生成用于承载PEI的DCI，并通过寻呼搜索空间，向用户设备发送用于承载PEI的DCI，其中，采用寻呼预告指示-无线网络临时标志PEI-RNTI加扰传输用于承载PEI的DCI的信道。其中，PEI-RNTI不同于P-RNTI，P-RNTI用于加扰传输Paging DCI的信道。
在上述实施方式中，在用于承载PEI的DCI和Paging DCI在同一个搜索空间中传输的情况下，传输用于承载PEI的DCI和Paging DCI时，需要采用不同的RNTI对信道加扰，以进行区分。
本公开实施例提供了一种确定下行控制信息DCI的方法，所述方法被网络设备执行。该方法可以独立被执行，也可以结合本公开实施例的任意一个其他实施例一起被执行。图 1是根据一示例性实施例示出的一种确定DCI的方法的流程图，如图3所示，该方法包括：
步骤301，基于第一搜索空间，确定用于承载寻呼预告指示PEI的DCI的bit数，所述第一搜索空间为传输用于承载PEI的DCI的搜索空间；
步骤302，响应于所述第一搜索空间是寻呼搜索空间，配置所述用于承载PEI的DCI中的第一信息域包含第一信息位；
其中，所述第一信息域用于区分所述用于承载PEI的DCI与Paging DCI。
在一个实施方式中，网络设备基于传输用于承载PEI的DCI的搜索空间为寻呼搜索空间，确定用于承载PEI的DCI的bit数等于Paging DCI的bit数，然后配置用于承载PEI的DCI中的第一信息域包含第一信息位，该第一信息域用于区分所述用于承载PEI的DCI与Paging DCI。
在一个实施方式中，网络设备基于传输用于承载PEI的DCI的搜索空间为寻呼搜索空间，确定用于承载PEI的DCI的bit数等于Paging DCI的bit数，然后配置用于承载PEI的DCI中的第一信息域包含第一信息位。其中该第一信息域包含1bit，第一信息位为0，此时指示该DCI为用于承载PEI的DCI。当第一信息域的1bit为1时，则指示该DCI为paging DCI。
需要说明的是，在其它实施方式中，第一信息域的bit数可以是其它数值。
关于承载PEI的DCI所包括的内容，已经在上文中结合实施例进行了详细地描述，在此不再赘述。
在上述实施方式中，在用于承载PEI的DCI和Paging DCI在同一个搜索空间中传输的情况下，需要配置用于承载PEI的DCI中的第一信息域以与Paging DCI中的第一信息域不同，从而将用于承载PEI的DCI与Paging DCI进行区分。
本公开实施例提供了一种确定下行控制信息DCI的方法，所述方法被网络设备执行。该方法可以独立被执行，也可以结合本公开实施例的任意一个其他实施例一起被执行。图4是根据一示例性实施例示出的一种确定DCI的方法的流程图，如图4所示，该方法包括：
步骤401，确定所述第一搜索空间；
步骤402，基于第一搜索空间，确定用于承载寻呼预告指示PEI的DCI的bit数，所述第一搜索空间为传输用于承载PEI的DCI的搜索空间。
在一个实施方式中，网络设备确定传输用于承载PEI的DCI的搜索空间是寻呼搜索空间，响应于用于承载PEI的DCI的搜索空间是寻呼搜索空间，确定用于承载PEI的DCI的bit数等于Paging DCI的bit数。
在一个实施方式中，网络设备确定传输用于承载PEI的DCI的搜索空间不是寻呼搜索空间，响应于用于承载PEI的DCI的搜索空间不是寻呼搜索空间，确定用于承载PEI的DCI的bit数小于或等于Paging DCI的bit数。
关于承载PEI的DCI所包括的内容，已经在上文中结合实施例进行了详细地描述，在此不再赘述。在上述实施方式中，基于传输用于承载PEI的DCI的搜索空间的不同情况，来确定用于承载PEI的DCI的bit数，使得该bit数的确定能够降低盲检开销或提高检测性能。
本公开实施例提供了一种接收下行控制信息DCI的方法，所述方法被用户设备执行。该方法可以独立被执行，也可以结合本公开实施例的任意一个其他实施例一起被执行。图5是根据一示例性实施例示出的一种确定DCI的方法的流程图，如图5所示，该方法包括：
步骤501，通过第一搜索空间，接收网络设备发送的用于承载寻呼预告指示PEI的DCI；
其中，所述用于承载PEI的DCI的bit数是基于所述第一搜索空间确定的，所述第一搜索空间为传输用于承载PEI的DCI的搜索空间。
在一个实施方式中，用户设备通过第一搜索空间，接收网络设备发送的用于承载寻呼预告指示PEI的DCI，其中，第一搜索空间为传输用于承载PEI的DCI的搜索空间，并且用于承载PEI的DCI的bit数是基于第一搜索空间确定的。即，传输用于承载PEI的DCI的搜索空间不同，用于承载PEI的DCI的bit数也会不同。
在一个实施方式中，响应于第一搜索空间是寻呼搜索空间，接收网络设备发送的用于承载寻呼预告指示PEI的DCI，其中，用于承载PEI的DCI的bit数等于寻呼下行控制信息Paging DCI的bit数。
在一个实施方式中，响应于所述第一搜索空间是寻呼搜索空间，接收网络设备发送的用于承载寻呼预告指示PEI的DCI，其中，用于承载PEI的DCI的bit数等于寻呼下行控制信息Paging DCI的bit数。并且，在接收用于承载寻呼预告指示PEI的DCI时，采用第一DCI尺寸假设值对物理下行控制信道PDCCH进行盲检。其中，第一DCI尺寸假设值与 Paging DCI尺寸假设值相同，
在上述实施方式中，用于承载PEI的DCI的bit数等于Paging DCI的bit数，可以降低盲检开销。这是因为，当用于承载PEI的DCI和Paging DCI在同一个搜索空间，即寻呼搜索空间中传输时，用户设备就需要在寻呼搜索空间中监听用于承载PEI的DCI和Paging DCI。如果用于承载PEI的DCI和Paging DCI具有相同的bit数，那么用户设备在盲检时只需要使用一种DCI尺寸假设值(size assumption)进行盲检解码，不需要分别使用两种DCI size assumption进行盲检解码。
在一个实施方式中，响应于第一搜索空间不是寻呼搜索空间，接收网络设备发送的用于承载寻呼预告指示PEI的DCI，其中，用于承载PEI的DCI的bit数等于或小于所述Paging DCI的bit数。
在一个实施方式中，响应于所述第一搜索空间不是寻呼搜索空间，接收网络设备发送的用于承载寻呼预告指示PEI的DCI，其中，用于承载PEI的DCI的bit数小于或等于寻呼下行控制信息Paging DCI的bit数。并且在接收用于承载寻呼预告指示PEI的DCI时，采用第二DCI尺寸假设值对物理下行控制信道PDCCH进行盲检。其中，第二DCI尺寸假设值与Paging DCI尺寸假设值相同或不同。
在上述实施方式中，用于承载PEI的DCI的bit数等于或小于所述Paging DCI的bit数，有利于提高检测性能(detection performance)。这是因为，用于承载PEI的DCI和Paging DCI分别在不同的搜索空间中传输，当Paging DCI在寻呼搜索空间中传输时，用户设备使用Paging DCI size assumption进行盲检；当承载PEI的DCI在用于PEI的搜索空间中传输时，该用于PEI的搜索空间不是寻呼搜索空间，用户设备使用PEI DCI size assumption进行盲检。在这种情况下，用于承载PEI的DCI的尺寸与paging DCI的尺寸不需要做对齐，因此针对用于承载PEI的DCI和Paging DCI，进行盲检所采用的两种DCI size assumption不必相同。此情况下，可以使得用于承载PEI的DCI的尺寸尽量小，以提高检测性能。
在一个实施方式中，响应于所述第一搜索空间是寻呼搜索空间，所述用于承载PEI的DCI包括第一字段，且包括第二字段、第三字段和第四字段中的任意N个字段，N为正整数，且0≤N≤3；其中，第一字段是寻呼指示字段(paging indication field)，第二字段是跟踪导频(Tracking Reference Signal，TRS)可获得性指示字段(availability indication field)， 第三字段是其他信息字段，第四字段是预留比特字段。
在一个实施方式中，用户设备通过第一搜索空间，接收网络设备发送的用于承载寻呼预告指示PEI的DCI。响应于第一搜索空间是寻呼搜索空间，用于承载PEI的DCI包括第一字段、第二字段、第三字段和第四字段，且第一字段、第二字段、第三字段和第四字段的bit数总和等于Paging DCI的bit数。
在一个实施方式中，用户设备通过第一搜索空间，接收网络设备发送的用于承载寻呼预告指示PEI的DCI。响应于第一搜索空间是寻呼搜索空间，用于承载PEI的DCI包括第一字段、第二字段和第三字段，且第一字段、第二字段和第三字段的bit数总和等于Paging DCI的bit数。
在一个实施方式中，用户设备通过第一搜索空间，接收网络设备发送的用于承载寻呼预告指示PEI的DCI。响应于第一搜索空间是寻呼搜索空间，用于承载PEI的DCI包括第一字段、第二字段和第四字段，且第一字段、第二字段和第四字段的bit数总和等于Paging DCI的bit数。
承载PEI的DCI中包括的内容一定有paging indication field，用于指示对应的PO中有没有寻呼。还可能有TRS availability indication field，用于指示有没有TRS导频的信息。此外，还可能有其他信息字段，该其他信息字段是将来可能会存在的用于传输其他信息的字段，例如传输短消息的字段，其中，短消息可以用于通知是否有系统消息更新，是否有海啸地震等预警信息。第四字段是预留比特字段，具有填充功能，即，当第一字段、第二字段和第三字段的bit数总和小于paging DCI的bit数时，通过填充bit可以使得用于承载PEI的DCI的bit数等于Paging DCI的bit数，从而实现在用于承载PEI的DCI和Paging DCI在同一个搜索空间中传输的情况下，降低盲检开销的目的。
在一个实施方式中，响应于所述第一搜索空间不是寻呼搜索空间，所述用于承载PEI的DCI包括所述第一字段，且包括第二字段和第三字段中的任意M个字段，M为正整数，且0≤M≤2；其中，所述第一字段是寻呼指示字段，所述第二字段是跟踪导频可获得性指示字段，所述第三字段是其他信息字段。
在一个实施方式中，用户设备通过第一搜索空间，接收网络设备发送的用于承载寻呼预告指示PEI的DCI。响应于第一搜索空间不是寻呼搜索空间，用于承载PEI的DCI包括第一字段、第二字段和第三字段，且第一字段、第二字段和第三字段的bit数总和小于Paging  DCI的bit数。
在一个实施方式中，用户设备通过第一搜索空间，接收网络设备发送的用于承载寻呼预告指示PEI的DCI。响应于第一搜索空间不是寻呼搜索空间，用于承载PEI的DCI包括第一字段、第二字段和第三字段，且第一字段、第二字段和第三字段的bit数总和等于Paging DCI的bit数。
在一个实施方式中，用户设备通过第一搜索空间，接收网络设备发送的用于承载寻呼预告指示PEI的DCI。响应于第一搜索空间不是寻呼搜索空间，用于承载PEI的DCI包括第一字段和第二字段，且第一字段和第二字段的bit数总和小于Paging DCI的bit数。
在一个实施方式中，用户设备通过第一搜索空间，接收网络设备发送的用于承载寻呼预告指示PEI的DCI。响应于第一搜索空间不是寻呼搜索空间，用于承载PEI的DCI包括第一字段和第三字段，且第一字段和第三字段的bit数总和小于Paging DCI的bit数。
在上述实施方式中，由于用于承载PEI的DCI和Paging DCI分别在不同的搜索空间中传输，因此用于承载PEI的DCI不需要包括填充字段来与Paging DCI的尺寸对齐。这种情况下，可以使得承载PEI的DCI的尺寸尽可能小，以提高检测性能。
本公开实施例提供了一种接收下行控制信息DCI的方法，所述方法被用户设备执行。该方法可以独立被执行，也可以结合本公开实施例的任意一个其他实施例一起被执行。该方法包括：
通过第一搜索空间，接收网络设备发送的用于承载寻呼预告指示PEI的DCI，其中，所述用于承载PEI的DCI的bit数是基于所述第一搜索空间确定的，所述第一搜索空间为传输用于承载PEI的DCI的搜索空间；
其中，所述通过第一搜索空间，接收网络设备发送的用于承载PEI的DCI，包括：
响应于所述第一搜索空间是寻呼搜索空间，采用第一无线网络临时标志RNTI解扰传输用于承载PEI的DCI的信道，其中，所述第一RNTI不同于第二RNTI，所述第二RNTI用于解扰传输Paging DCI的信道。
在一个实施方式中，用户设备通过第一搜索空间，接收网络设备发送的用于承载寻呼预告指示PEI的DCI。第一搜索空间为传输用于承载PEI的DCI的搜索空间，用于承载PEI的DCI的bit数是基于所述第一搜索空间确定的。响应于第一搜索空间是寻呼搜索空间，采用第一无线网络临时标志RNTI解扰传输用于承载PEI的DCI的信道，其中，第一 RNTI不同于第二RNTI，第二RNTI用于解扰传输Paging DCI的信道。
在一个实施方式中，用户设备通过第一搜索空间，接收网络设备发送的用于承载寻呼预告指示PEI的DCI。第一搜索空间为传输用于承载PEI的DCI的搜索空间，用于承载PEI的DCI的bit数是基于所述第一搜索空间确定的。响应于第一搜索空间是寻呼搜索空间，采用寻呼预告指示-无线网络临时标志PEI-RNTI解扰传输用于承载PEI的DCI的信道，其中，PEI-RNTI不同于P-RNTI，P-RNTI用于加扰传输Paging DCI的信道。
在上述实施方式中，在用于承载PEI的DCI和Paging DCI在同一个搜索空间中传输的情况下，接收用于承载PEI的DCI和Paging DCI时，需要采用不同的RNTI对信道进行解扰，以进行区分。
本公开实施例提供了一种接收下行控制信息DCI的方法，所述方法被用户设备执行。该方法可以独立被执行，也可以结合本公开实施例的任意一个其他实施例一起被执行。该方法包括：
通过第一搜索空间，接收网络设备发送的用于承载寻呼预告指示PEI的DCI；
其中，所述用于承载PEI的DCI的bit数是基于所述第一搜索空间确定的，所述第一搜索空间为传输用于承载PEI的DCI的搜索空间；
其中，响应于所述第一搜索空间是寻呼搜索空间，所述用于承载PEI的DCI中的第一信息域包含第一信息位，所述第一信息域用于区分所述用于承载PEI的DCI与Paging DCI。
在一个实施方式中，用户设备通过第一搜索空间，接收网络设备发送的用于承载寻呼预告指示PEI的DCI。第一搜索空间为传输用于承载PEI的DCI的搜索空间，用于承载PEI的DCI的bit数是基于所述第一搜索空间确定的。响应于第一搜索空间是寻呼搜索空间，用于承载PEI的DCI中的第一信息域包含第一信息位，所述第一信息域用于区分所述用于承载PEI的DCI与Paging DCI。在一个实施方式中，用户设备通过第一搜索空间，接收网络设备发送的用于承载寻呼预告指示PEI的DCI。第一搜索空间为传输用于承载PEI的DCI的搜索空间，用于承载PEI的DCI的bit数是基于所述第一搜索空间确定的。响应于第一搜索空间是寻呼搜索空间，用于承载PEI的DCI中的第一信息域包含第一信息位，第一信息位为0，此时指示该DCI为用于承载PEI的DCI。当第一信息域的1bit为1时，则指示该DCI为paging DCI。
也就是说，在DCI中，通过第一信息域来做PEI DCI与Paging DCI的区分，例如，如 果如果第一信息域包括1bit的第一信息位，当该信息位为1时，表明此DCI为PEI DCI，当该信息位为0时，表明此DCI为Paging DCI。或者，当该信息位为0时，表明此DCI为PEI DCI，当该信息位为1时，表明此DCI为Paging DCI。应理解，其他信息域以及信息位的指示及区分方法也在本发明的保护范围之内。
在上述实施方式中，在用于承载PEI的DCI和Paging DCI在同一个搜索空间中传输的情况下，用于承载PEI的DCI中的第一信息域以与Paging DCI中的第一信息域不同，从而将用于承载PEI的DCI与Paging DCI进行区分。
本公开实施例提供了一种确定下行控制信息DCI的装置，应用于网络设备，如图6所示，包括：
处理模块601，被配置为基于第一搜索空间，确定用于承载寻呼预告指示PEI的DCI的bit数，所述第一搜索空间为传输用于承载PEI的DCI的搜索空间。
本公开实施例提供了一种接收下行控制信息DCI的装置，应用于用户设备，如图7所示，包括：
接收模块701，被配置为通过第一搜索空间，接收网络设备发送的用于承载寻呼预告指示PEI的DCI；
其中，所述用于承载PEI的DCI的bit数是基于所述第一搜索空间确定的，所述第一搜索空间为传输用于承载PEI的DCI的搜索空间。
本公开实施例提供了一种网络侧设备，包括：
处理器；
用于存储处理器可执行指令的存储器；
其中，所述处理器被配置为执行所述存储器中的可执行指令以实现上述确定下行控制信息DCI的方法的步骤。
本公开实施例提供了一种移动终端，包括：
处理器；
用于存储处理器可执行指令的存储器；
其中，所述处理器被配置为执行所述存储器中的可执行指令以实现上述接收下行控制 信息DCI的方法的步骤。
本公开实施例提供了一种非临时性计算机可读存储介质，其上存储有可执行指令，该可执行指令被处理器执行时实现上述确定下行控制信息DCI的方法或者上述接收下行控制信息DCI的方法的步骤。
图8是根据一示例性实施例示出的一种用于接收下行控制信息DCI的装置800的框图。例如，装置800可以是移动电话，计算机，数字广播终端，消息收发设备，游戏控制台，平板设备，医疗设备，健身设备，个人数字助理等。
参照图8，装置800可以包括以下一个或多个组件：处理组件802，存储器804，电源组件806，多媒体组件808，音频组件810，输入/输出(I/O)的接口812，传感器组件814，以及通信组件816。
处理组件802通常控制装置800的整体操作，诸如与显示，电话呼叫，数据通信，相机操作和记录操作相关联的操作。处理组件802可以包括一个或多个处理器820来执行指令，以完成上述的方法的全部或部分步骤。此外，处理组件802可以包括一个或多个模块，便于处理组件802和其他组件之间的交互。例如，处理组件802可以包括多媒体模块，以方便多媒体组件808和处理组件802之间的交互。
存储器804被配置为存储各种类型的数据以支持在设备800的操作。这些数据的示例包括用于在装置800上操作的任何应用程序或方法的指令，联系人数据，电话簿数据，消息，图片，视频等。存储器804可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，如静态随机存取存储器(SRAM)，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，可编程只读存储器(PROM)，只读存储器(ROM)，磁存储器，快闪存储器，磁盘或光盘。
电源组件806为装置800的各种组件提供电力。电源组件806可以包括电源管理系统，一个或多个电源，及其他与为装置800生成、管理和分配电力相关联的组件。
多媒体组件808包括在所述装置800和用户之间的提供一个输出接口的屏幕。在一些实施例中，屏幕可以包括液晶显示器(LCD)和触摸面板(TP)。如果屏幕包括触摸面板，屏幕可以被实现为触摸屏，以接收来自用户的输入信号。触摸面板包括一个或多个触摸传感器以感测触摸、滑动和触摸面板上的手势。所述触摸传感器可以不仅感测触摸或滑动动作的边界，而且还检测与所述触摸或滑动操作相关的持续时间和压力。在一些实施例中， 多媒体组件808包括一个前置摄像头和/或后置摄像头。当设备800处于操作模式，如拍摄模式或视频模式时，前置摄像头和/或后置摄像头可以接收外部的多媒体数据。每个前置摄像头和后置摄像头可以是一个固定的光学透镜系统或具有焦距和光学变焦能力。
音频组件810被配置为输出和/或输入音频信号。例如，音频组件810包括一个麦克风(MIC)，当装置800处于操作模式，如呼叫模式、记录模式和语音识别模式时，麦克风被配置为接收外部音频信号。所接收的音频信号可以被进一步存储在存储器804或经由通信组件816发送。在一些实施例中，音频组件810还包括一个扬声器，用于输出音频信号。
I/O接口812为处理组件802和外围接口模块之间提供接口，上述外围接口模块可以是键盘，点击轮，按钮等。这些按钮可包括但不限于：主页按钮、音量按钮、启动按钮和锁定按钮。
传感器组件814包括一个或多个传感器，用于为装置800提供各个方面的状态评估。例如，传感器组件814可以检测到设备800的打开/关闭状态，组件的相对定位，例如所述组件为装置800的显示器和小键盘，传感器组件814还可以检测装置800或装置800一个组件的位置改变，用户与装置800接触的存在或不存在，装置800方位或加速/减速和装置800的温度变化。传感器组件814可以包括接近传感器，被配置用来在没有任何的物理接触时检测附近物体的存在。传感器组件814还可以包括光传感器，如CMOS或CCD图像传感器，用于在成像应用中使用。在一些实施例中，该传感器组件814还可以包括加速度传感器，陀螺仪传感器，磁传感器，压力传感器或温度传感器。
通信组件816被配置为便于装置800和其他设备之间有线或无线方式的通信。装置800可以接入基于通信标准的无线网络，如WiFi，2G或3G，或它们的组合。在一个示例性实施例中，通信组件816经由广播信道接收来自外部广播管理系统的广播信号或广播相关信息。在一个示例性实施例中，所述通信组件816还包括近场通信(NFC)模块，以促进短程通信。例如，在NFC模块可基于射频识别(RFID)技术，红外数据协会(IrDA)技术，超宽带(UWB)技术，蓝牙(BT)技术和其他技术来实现。
在示例性实施例中，装置800可以被一个或多个应用专用集成电路(ASIC)、数字信号处理器(DSP)、数字信号处理设备(DSPD)、可编程逻辑器件(PLD)、现场可编程门阵列(FPGA)、控制器、微控制器、微处理器或其他电子元件实现，用于执行上述方法。
在示例性实施例中，还提供了一种包括指令的非临时性计算机可读存储介质，例如包 括指令的存储器804，上述指令可由装置800的处理器820执行以完成上述方法。例如，所述非临时性计算机可读存储介质可以是ROM、随机存取存储器(RAM)、CD-ROM、磁带、软盘和光数据存储设备等。
图9是根据一示例性实施例示出的一种确定下行控制信息DCI的装置900的框图。例如，装置900可以被提供为一基站。参照图9，装置900包括处理组件922，其进一步包括一个或多个处理器，以及由存储器932所代表的存储器资源，用于存储可由处理组件922的执行的指令，例如应用程序。存储器932中存储的应用程序可以包括一个或一个以上的每一个对应于一组指令的模块。此外，处理组件922被配置为执行指令，以执行上述非授权信道的接入方法。
装置900还可以包括电源组件926，所述电源组件926被配置为执行装置900的电源管理，有线或无线网络接口950，所述有线或无线网络接口950被配置为将装置900连接到网络，和输入输出(I/O)接口959。装置900可以操作基于存储在存储器932的操作系统，例如Windows ServerTM，Mac OS XTM，UnixTM,LinuxTM，FreeBSDTM或类似。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本公开实施例的其它实施方案。本申请旨在涵盖本公开实施例的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开实施例的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本公开实施例的真正范围和精神由下面的权利要求指出。
应当理解的是，本公开实施例并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本公开实施例的范围仅由所附的权利要求来限制。
工业实用性
本公开中，基于传输用于承载PEI的DCI的搜索空间的不同情况，来确定用于承载PEI的DCI的bit数，使得该bit数的确定能够降低盲检开销或提高检测性能。

Claims (19)

  1. 一种确定下行控制信息DCI的方法，被网络设备执行，包括：
    基于第一搜索空间，确定用于承载寻呼预告指示PEI的DCI的bit数，所述第一搜索空间为传输用于承载PEI的DCI的搜索空间。
  2. 如权利要求1所述的方法，其中，所述基于第一搜索空间，确定用于承载PEI的DCI的bit数，包括以下至少一个：
    响应于所述第一搜索空间是寻呼搜索空间，确定所述用于承载PEI的DCI的bit数等于寻呼下行控制信息Paging DCI的bit数；
    响应于所述第一搜索空间不是寻呼搜索空间，确定所述用于承载PEI的DCI的bit数等于或小于所述Paging DCI的bit数。
  3. 如权利要求1所述的方法，其中，所述基于第一搜索空间，确定用于承载PEI的DCI的bit数，包括以下至少一个：
    响应于所述第一搜索空间是寻呼搜索空间，确定所述用于承载PEI的DCI包括第一字段，且包括第二字段、第三字段和第四字段中的任意N个字段，N为正整数，且0≤N≤3；
    响应于所述第一搜索空间不是寻呼搜索空间，确定所述用于承载PEI的DCI包括所述第一字段，且包括第二字段和第三字段中的任意M个字段，M为正整数，且0≤M≤2；
    其中，所述第一字段是寻呼指示字段，所述第二字段是跟踪导频可获得性指示字段，所述第三字段是其他信息字段，所述第四字段是预留比特字段。
  4. 如权利要求1所述的方法，其中，所述方法还包括：
    生成所述用于承载PEI的DCI；
    通过所述第一搜索空间，向用户设备发送所述用于承载PEI的DCI。
  5. 如权利要求4所述的方法，其中，所述通过所述第一搜索空间，向用户设备发送所述用于承载PEI的DCI，包括：
    响应于所述第一搜索空间是寻呼搜索空间，采用第一无线网络临时标志RNTI加扰传输用于承载PEI的DCI的信道；
    其中，所述第一RNTI不同于第二RNTI，所述第二RNTI用于加扰传输Paging DCI的信道。
  6. 如权利要求5所述的方法，其中，所述第一RNTI为寻呼预告指示-无线网络临时标志PEI-RNTI。
  7. 如权利要求1所述的方法，其中，所述方法还包括：
    响应于所述第一搜索空间是寻呼搜索空间，配置所述用于承载PEI的DCI中的第一信息域包含第一信息位；
    其中，所述第一信息域用于区分所述用于承载PEI的DCI与Paging DCI。
  8. 如权利要求1所述的方法，其中，所述方法还包括：
    确定所述第一搜索空间。
  9. 一种接收下行控制信息DCI的方法，被用户设备执行，包括：
    通过第一搜索空间，接收网络设备发送的用于承载寻呼预告指示PEI的DCI；
    其中，所述用于承载PEI的DCI的bit数是基于所述第一搜索空间确定的，所述第一搜索空间为传输用于承载PEI的DCI的搜索空间。
  10. 如权利要求9所述的方法，其中，
    响应于所述第一搜索空间是寻呼搜索空间，所述用于承载PEI的DCI的bit数等于寻呼下行控制信息Paging DCI的bit数；
    响应于所述第一搜索空间不是寻呼搜索空间，所述用于承载PEI的DCI的bit数等于或小于所述Paging DCI的bit数。
  11. 如权利要求9所述的方法，其中，
    响应于所述第一搜索空间是寻呼搜索空间，所述用于承载PEI的DCI包括第一字段，且包括第二字段、第三字段和第四字段中的任意N个字段，N为正整数，且0≤N≤3；
    响应于所述第一搜索空间不是寻呼搜索空间，所述用于承载PEI的DCI包括所述第一字段，且包括第二字段和第三字段中的任意M个字段，M为正整数，且0≤M≤2；
    其中，所述第一字段是寻呼指示字段，所述第二字段是跟踪导频可获得性指示字段，所述第三字段是其他信息字段，所述第四字段是预留比特字段。
  12. 如权利要求9所述的方法，其中，所述通过第一搜索空间，接收网络设备发送的用于承载PEI的DCI，包括：
    响应于所述第一搜索空间是寻呼搜索空间，采用第一无线网络临时标志RNTI解扰传 输用于承载PEI的DCI的信道；
    其中，所述第一RNTI不同于第二RNTI，所述第二RNTI用于解扰传输Paging DCI的信道。
  13. 如权利要求12所述的方法，其中，所述第一RNTI为寻呼预告指示-无线网络临时标志PEI-RNTI。
  14. 如权利要求9所述的方法，其中，
    响应于所述第一搜索空间是寻呼搜索空间，所述用于承载PEI的DCI中的第一信息域包含第一信息位；
    其中，所述第一信息域用于区分所述用于承载PEI的DCI与Paging DCI。
  15. 一种确定下行控制信息DCI的装置，应用于网络设备，包括：
    处理模块，被配置为基于第一搜索空间，确定用于承载寻呼预告指示PEI的DCI的bit数，所述第一搜索空间为传输用于承载PEI的DCI的搜索空间。
  16. 一种接收下行控制信息DCI的装置，应用于用户设备，包括：
    接收模块，被配置为通过第一搜索空间，接收网络设备发送的用于承载寻呼预告指示PEI的DCI；
    其中，所述用于承载PEI的DCI的bit数是基于所述第一搜索空间确定的，所述第一搜索空间为传输用于承载PEI的DCI的搜索空间。
  17. 一种网络侧设备，包括：
    处理器；
    用于存储处理器可执行指令的存储器；
    其中，所述处理器被配置为执行所述存储器中的可执行指令以实现权利要求1至8中任一项的确定下行控制信息DCI的方法的步骤。
  18. 一种移动终端，包括：
    处理器；
    用于存储处理器可执行指令的存储器；
    其中，所述处理器被配置为执行所述存储器中的可执行指令以实现权利要求9至14中任一项的接收下行控制信息DCI的方法的步骤。
  19. 一种非临时性计算机可读存储介质，其上存储有可执行指令，该可执行指令被处理器执行时实现权利要求1至8中任一项的确定下行控制信息DCI的方法或者权利要求9至14中任一项的接收下行控制信息DCI的方法的步骤。
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