WO2019047659A1 - 一种指示以及下行控制信道检测方法、设备、装置 - Google Patents

一种指示以及下行控制信道检测方法、设备、装置 Download PDF

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Publication number
WO2019047659A1
WO2019047659A1 PCT/CN2018/099264 CN2018099264W WO2019047659A1 WO 2019047659 A1 WO2019047659 A1 WO 2019047659A1 CN 2018099264 W CN2018099264 W CN 2018099264W WO 2019047659 A1 WO2019047659 A1 WO 2019047659A1
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Prior art keywords
indication information
control channel
downlink control
terminal
signaling
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PCT/CN2018/099264
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English (en)
French (fr)
Inventor
王磊
郑方政
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电信科学技术研究院有限公司
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Priority to EP18853034.9A priority Critical patent/EP3684108B1/en
Priority to US16/646,557 priority patent/US11743827B2/en
Publication of WO2019047659A1 publication Critical patent/WO2019047659A1/zh

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    • 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
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0248—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal dependent on the time of the day, e.g. according to expected transmission activity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • 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
    • H04L5/0078—Timing of 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
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
    • 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
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • 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
    • 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 invention relates to the field of wireless communication technologies, and in particular, to an indication and downlink control channel detection method, device, and apparatus.
  • LTE Long Term Evolution
  • the PDCCH (physical downlink control channel) of the LTE system is used to carry scheduling information and other control information. There may be multiple PDCCHs in the control region of each downlink subframe, and the size of the control region is determined by a PCFICH (Physical Control Format Indicator Channel), which is 1 to 4 OFDM (Orthogonal Frequency Division Multiplex). Frequency division multiplexing) symbols.
  • PCFICH Physical Control Format Indicator Channel
  • OFDM Orthogonal Frequency Division Multiplex
  • the transmission of one control channel occupies one CCE (control channel element) or multiple consecutive CCEs, each CCE is composed of 9 REGs (resource element group), and the REG included in the CCE of the PDCCH
  • the REG is not used to carry a PCFICH (Physical Control Format Indicator Channel) and a PHICH (Physical Hybrid-ARQ indicator channel).
  • the UE User Equipment
  • an EPDCCH (Enhanced Physical Downlink Control Channel) is introduced in Rel-11.
  • the EPDCCH is transmitted in a data area in a subframe, and cannot occupy the transmission space of the PDCCH.
  • the terminal configured with the EPDCCH detects the received EPDCCH in the PRB set (PRB: physical resource block) configured in each subframe.
  • PRB physical resource block
  • EMTC Enhanced MTC, Enhanced MTC; MTC: Machine Type Communications
  • MTC PDCCH Machine Type Communication PDCCH
  • subframes subframes
  • the terminal needs to detect and receive the downlink control channel in all the subframes of the DRX ON state, but this causes additional power consumption on the terminal side.
  • the invention provides an indication and downlink control channel detection method, device and device for reducing additional energy consumption on the terminal side.
  • the embodiment of the present invention provides a downlink control channel detection method, including: receiving signaling sent by a base station to a terminal, and determining, according to the signaling, whether detection is required in one or more transmission time intervals (TTIs) on the terminal.
  • TTIs transmission time intervals
  • the signaling is indication information carried on the group common PDCCH.
  • the indication information carried on the group common PDCCH is indication information of the N bit, and N is a positive integer greater than or equal to 1.
  • the signaling is indication information sent at a particular resource location.
  • the signaling is indication information that is sent by the base station to a specific resource location of the terminal by using high layer signaling.
  • the indication information is detected on the specific resource in each TTI or every M TTIs to determine whether a downlink control channel needs to be detected.
  • M is an integer greater than one.
  • the TTI is a slot or a mini-slot.
  • the indication information is implemented by independent coding; or the indication information is transmitted in the channel structure of the PDCCH by using the same processing manner as the downlink control channel.
  • the embodiment of the present invention provides a method for detecting a downlink control channel, which includes: determining data that needs to be transmitted to a terminal through a downlink control channel in one or more TTIs; the base station sends signaling to the terminal to indicate that the terminal is configured according to the The signaling determines whether a downlink control channel needs to be detected within one or more TTIs.
  • the signaling is indication information carried on the group common PDCCH.
  • the indication information carried on the group common PDCCH is indication information of the N bit, and N is a positive integer greater than or equal to 1.
  • the signaling is indication information sent at a particular resource location.
  • the signaling is indication information that is sent by the base station to a specific resource location of the terminal by using high layer signaling.
  • the indication information is detected on the specific resource in each TTI or every M TTIs to determine whether a downlink control channel needs to be detected.
  • the TTI is a slot or a mini-slot.
  • the indication information is implemented by independent coding; or the indication information is transmitted in the channel structure of the PDCCH by using the same processing manner as the downlink control channel.
  • the embodiment of the present invention provides a user equipment, including: a transceiver, configured to receive and transmit data under the control of a processor, and perform the following processes: receiving signaling sent by the base station to the terminal; and processing, for reading The program in the memory performs the following process: determining, on the terminal, whether the downlink control channel needs to be detected in one or more TTIs according to the signaling.
  • a transceiver configured to receive and transmit data under the control of a processor, and perform the following processes: receiving signaling sent by the base station to the terminal; and processing, for reading
  • the program in the memory performs the following process: determining, on the terminal, whether the downlink control channel needs to be detected in one or more TTIs according to the signaling.
  • the signaling is indication information carried on the group common PDCCH.
  • the indication information carried on the group common PDCCH is indication information of the N bit, and N is a positive integer greater than or equal to 1.
  • the signaling is indication information sent at a particular resource location.
  • the signaling is indication information that is sent by the base station to a specific resource location of the terminal by using high layer signaling.
  • the indication information is detected on the specific resource in each TTI or every M TTIs to determine whether a downlink control channel needs to be detected.
  • the TTI is a slot or a mini-slot.
  • the indication information is implemented by independent coding; or the indication information is transmitted in the channel structure of the PDCCH by using the same processing manner as the downlink control channel.
  • the embodiment of the present invention provides a base station, including: a processor, configured to read a program in a memory, and perform the following process: determining data that needs to be transmitted to a terminal through a downlink control channel in one or more TTIs; To receive and send data under the control of the processor, perform the following process:
  • the base station sends signaling to the terminal to instruct the terminal to determine, according to the signaling, whether the downlink control channel needs to be detected in one or more TTIs.
  • the signaling is indication information carried on the group common PDCCH.
  • the indication information carried on the group common PDCCH is indication information of the N bit, and N is a positive integer greater than or equal to 1.
  • the signaling is indication information sent at a particular resource location.
  • the signaling is indication information that is sent by the base station to a specific resource location of the terminal by using high layer signaling.
  • the indication information is detected on the specific resource in each TTI or every M TTIs to determine whether a downlink control channel needs to be detected.
  • the TTI is a slot or a mini-slot.
  • the indication information is implemented by independent coding; or the indication information is transmitted in the channel structure of the PDCCH by using the same processing manner as the downlink control channel.
  • the embodiment of the present invention provides a downlink control channel detecting apparatus, including: a receiving module, configured to receive signaling sent by a base station to a terminal; and a detecting module, configured to determine, at the terminal, one or more according to the signaling Whether the downlink control channel needs to be detected in the TTI.
  • An apparatus for detecting a downlink control channel including:
  • a determining module configured to determine data that needs to be transmitted to the terminal by using a downlink control channel in one or more TTIs
  • a sending module configured to send signaling to the terminal at the base station, to indicate that the terminal determines, according to the signaling, Whether it is necessary to detect the downlink control channel in multiple TTIs.
  • An embodiment of the present invention provides a computer storage medium storing computer executable instructions for causing the computer to execute the method performed by the terminal side.
  • Embodiments of the present invention provide a computer storage medium storing computer executable instructions for causing the computer to execute the method performed by the base station side.
  • the base station can notify the terminal whether to detect the downlink control channel of the scheduling data in one or more TTIs, so the terminal can determine whether to detect in one or more TTIs according to the indication information notified by the base station.
  • a downlink control channel that schedules data Therefore, when the non-DRX subframe is not scheduled, the terminal does not need to detect the downlink control channel in all the subframes of the DRX ON state, so that when the base station does not schedule the terminal, the terminal side has no additional energy. Consumption, which reduces the energy consumption on the terminal side.
  • FIG. 1 is a schematic flowchart of implementing a method for detecting a downlink control channel on a terminal side according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a method for implementing a downlink control channel detection method by a base station side according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of indication detection according to Embodiment 1 of the present invention.
  • FIG. 5 is a schematic diagram of indication detection according to Embodiment 3 of the present invention.
  • FIG. 6 is a schematic diagram of indication detection according to Embodiment 4 of the present invention.
  • FIG. 7 is a schematic structural diagram of a UE according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a downlink control channel detecting apparatus according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of an apparatus for indicating a downlink control channel according to an embodiment of the present invention.
  • the TTI Transmission Time Interval
  • the TTI length is fixed to 1 ms
  • one or more PDCCHs are transmitted on the first N OFDM symbols of each TTI or on a set of PRB pairs in the data area.
  • the transmission is transmitted on multiple consecutive/discontinuous subframes, and the UE obtains the information according to the desired information in CSS (Cell-specific search space) or USS (UE-specific search space).
  • CSS Cell-specific search space
  • USS UE-specific search space
  • the terminal needs to detect and receive the downlink control channel in all the subframes of the DRX ON state, as described above, such that when the base station does not schedule the terminal, the terminal side has additional energy consumption.
  • the terminal there is currently no clear solution on how to reduce the energy consumption of the terminal in a sub-frame without data transmission. Based on this, in the embodiment of the present invention, a scheme for indicating downlink control channel detection and downlink control channel detection is provided, and a specific implementation manner of the present invention is described below with reference to the accompanying drawings.
  • the base station will notify the terminal whether to detect and receive the downlink control channel in one or more TTIs through explicit indication signaling. Since the terminal side and the base station side are mutually responsive, there is a corresponding processing manner, so the repetition will not be described again.
  • FIG. 1 is a schematic flowchart of a method for implementing a downlink control channel detection method on a terminal side, as shown in the figure, which may include:
  • Step 101 Receive signaling that is sent by the base station to the terminal.
  • Step 102 Determine, according to the signaling, whether a downlink control channel needs to be detected in one or more TTIs on the terminal.
  • the terminal determines whether it is necessary to detect and receive the downlink control channel in one or more TTIs according to the explicit signaling sent by the base station.
  • the detecting and receiving are generally continuous actions. For example, the terminal monitors the PDCCH in the search space, and needs to detect the PDCCH on different PDCCH candidates according to the agreed DCI format. A more specific behavior is that the terminal needs to cache the entire data and then detect and parse it. Therefore, in order to better conform to the specific implementation, the description of detecting the downlink control channel is also adopted in the specific implementation description.
  • the signaling is indication information carried on the group common PDCCH.
  • the indication information carried on the group common PDCCH is indication information of the N bit, and N is a positive integer greater than or equal to 1.
  • the terminal receives the N bit indication information carried on the group common PDCCH, and determines whether the downlink control channel needs to be detected in one or more TTIs.
  • N is a positive integer greater than or equal to 1.
  • the inner detection receives the downlink control channel.
  • the first bit information bit indicates whether the terminal needs to detect the receiving downlink control channel in the slot n
  • the second bit information bit indicates whether the terminal needs to detect the receiving downlink control channel in the slot n+1, and so on.
  • the signaling is indication information sent at a particular resource location.
  • the terminal receives downlink control channel detection indication information at a specific resource location.
  • the signaling is indication information that is sent by the base station to a specific resource location of the terminal by using the high layer signaling.
  • the specific resource location is configured by the base station to the terminal by using high layer signaling.
  • the indication information is detected on the specific resource in each TTI or every M TTIs to determine whether a downlink control channel needs to be detected.
  • M is an integer greater than one.
  • the indication information is first detected on the particular resource within each TTI.
  • the terminal After receiving the indication information, the terminal determines whether it is necessary to detect and receive the downlink control channel in the TTI. For example, when the status of the indication information is 1, the terminal needs to detect and receive the downlink control channel in the TTI; when the status of the indication information is 0, the terminal does not need to detect and receive the downlink control channel in the TTI.
  • the manner of detecting the indication information on the specific resource in every M TTIs means that the specific resource occurs once every M TTIs. That is, the terminal does not need to receive indication information on each TTI.
  • the TTI is a slot or a mini-slot.
  • the indication information is implemented by independent coding; or the indication information is transmitted in the channel structure of the PDCCH by using the same processing manner as the downlink control channel.
  • the indication information is implemented by independent coding, for example, by repeated coding, or by block coding, or other methods different from control channel coding.
  • the indication information is transmitted in the channel structure of the PDCCH by using the same processing manner as the downlink control channel.
  • the DCI format X is introduced to carry the indication information.
  • the DCI format is transmitted on the specified resource with a fixed aggregation level.
  • FIG. 2 is a schematic flowchart of a method for implementing a downlink control channel detection method on a base station side, as shown in the figure, which may include:
  • Step 201 Determine data that needs to be transmitted to the terminal through the downlink control channel in one or more TTIs;
  • Step 202 The base station sends signaling to the terminal, to indicate, according to the signaling, whether the terminal needs to detect the downlink control channel in one or more TTIs.
  • the base station sends explicit signaling to indicate whether the terminal needs to detect a downlink control channel for receiving scheduled data transmission in one or more TTIs.
  • the signaling is indication information carried on the group common PDCCH.
  • the indication information carried on the group common PDCCH is indication information of the N bit, and N is a positive integer greater than or equal to 1.
  • the base station sends the downlink control channel blind detection indication information by using the group common PDCCH, and indicates whether the terminal needs to detect the downlink control channel for receiving the scheduled data transmission in one or more TTIs.
  • signaling is indication information sent at a particular resource location.
  • the base station indicates, by using the indication information sent on the specific resource, whether the terminal needs to detect the downlink control channel for receiving the scheduled data transmission in one or more TTIs.
  • the specific resource is a resource set configured by the base station to the terminal by using the high layer signaling, and the specific resources of the different terminals may be the same or different.
  • the terminal may send only one common indication information, and the terminal determines, according to the indication information, whether it is necessary to detect a downlink control channel for receiving scheduled data transmission in one or more TTIs.
  • the signaling is indication information that is sent by the base station to a specific resource location of the terminal through high layer signaling.
  • the indication information is detected on the specific resource in each TTI or every M TTIs to determine whether a downlink control channel needs to be detected.
  • the TTI is a slot or a mini-slot (microslot).
  • the indication information is implemented by independent coding; or the indication information is transmitted in the channel structure of the PDCCH by using the same processing manner as the downlink control channel.
  • the base station when the base station sends the indication information at a specific resource location, the base station adopts the same structure as the downlink control channel, or an independent channel structure and an encoding manner, such as block coding, repetition coding, and the like.
  • FIG. 3 is a schematic diagram of the indication detection of the embodiment 1.
  • two UEs are included in one UE group, namely UE1 and UE2, and it is assumed that UE1 and UE2 respectively configure two control resource sets, which are recorded as ⁇ CORESET1-1 , CORESET1-2 ⁇ and ⁇ CORESET2-1, CORESET2-2 ⁇ , UE1 and UE2 receive the 1-bit indication information transmitted on the group common PDCCH before detecting the downlink control channel in the corresponding control resource.
  • the indication information indicates whether the terminal in the group needs to detect and receive the downlink control channel in the slot.
  • the indication information when the indication information is state 1, it indicates that UE1 and UE2 need to detect a downlink control channel that receives its own scheduling data in a corresponding CORESET in the slot; when the indication information is state 0, it indicates that UE1 and UE2 It is not necessary to detect a downlink control channel that receives its own scheduling data within the corresponding CORESET in the slot.
  • the indication information transmitted on the group common PDCCH may indicate detection reception of the downlink control channel of the scheduling data in the plurality of slots. For example, the detection and reception of the downlink control channel in all slots in the group common PDCCH transmission period is notified.
  • FIG. 4 is a schematic diagram of the indication detection of the embodiment 2. As shown in the figure, it is assumed that two UEs are included in one UE group, which are UE1 and UE2. It is assumed that UE1 and UE2 are respectively configured with two control resource sets, which are recorded as ⁇ CORESET1-1 , CORESET1-2 ⁇ and ⁇ CORESET2-1, CORESET2-2 ⁇ . UE1 and UE2 receive the N bit indication information transmitted on the group common PDCCH before detecting the reception of the downlink control channel in the corresponding control resource. The N bit indication information indicates that UE1 and UE2 detect the state of receiving the downlink control channel in N slots.
  • each information bit corresponds to the detection state of the downlink control channel in a slot
  • the indication information indicates whether the terminal in the group needs to detect and receive the downlink control channel in the slot.
  • the indication information is state 1
  • the indication information is state 0
  • a downlink control channel that receives its own scheduling data is detected in the corresponding CORESET in the slot.
  • the indication information indicates that UE1 and UE2 do not need to detect the downlink control channel of the scheduling data in slot N, and need to detect the downlink control channel of the scheduling data in slot N+1.
  • the indication information may also have other states, as shown in Table 1 below.
  • Table 1 Information status and meaning of 2bit indication information
  • FIG. 5 is a schematic diagram of the indication detection in Embodiment 3.
  • the base station configures a specific resource for the base station to transmit detection and reception indication information.
  • the base station configures, for each terminal, a resource location for transmitting the indication information.
  • the base station configures two CORESETs for the terminal and specifies some resources within the CORESET for transmitting the indication information.
  • a resource independent of CORESET is configured to transmit the indication information.
  • the indication information may be transmitted by using the structure of the PDCCH, or may be transmitted by using an independent channel structure and an encoding manner (for example, block coding, repetition coding, etc.), and the implementation does not impose any limitation.
  • the terminal first detects and receives the indication information in a specific resource configured by the high-level signaling, and determines, according to the indication information, whether the downlink control channel that receives the scheduling data is detected in the slot.
  • the indication information is 1 bit.
  • the terminal needs to detect the downlink control channel that receives the scheduling data in the CORESET corresponding to the slot.
  • the terminal does not need to The downlink control channel that receives the scheduling data is detected in the CORESET corresponding to the slot. Specifically, as shown in Figure 5.
  • the indication information may also indicate detection and reception of a downlink control channel of scheduling data in multiple slots.
  • FIG. 6 is a schematic diagram of the detection of the indication of the embodiment 4. As shown in the figure, based on the embodiment 3, it is assumed that the partial CORESETs of the UE1 and the UE2 overlap, and the detection indication information of the downlink control channel of the scheduling data is transmitted in a common part. Then, the base station notifies the terminal of the overlapping resource locations. UE1 and UE2 first need to detect and receive the indication information in the overlapping portion. When the indication information is 0, UE1 and UE2 do not detect the downlink control channel that receives the scheduling data in the current slot; when the indication information is 1, UE1 and UE2 need to detect the downlink of the received scheduling data in the current slot. Control channel.
  • the embodiment of the present invention further provides a device related to downlink control channel detection and indication of downlink control channel detection, and the principle of solving the problem by these devices, a downlink control channel detection method, and an indication downlink control channel detection.
  • the method is similar, so the implementation of these devices can be referred to the implementation of the method, and the repeated description will not be repeated.
  • FIG. 7 is a schematic structural diagram of a UE. As shown in the figure, the user equipment includes:
  • the transceiver 710 is configured to receive and send data under the control of the processor 700, and perform the following process: receiving signaling sent by the base station to the terminal;
  • the processor 700 is configured to read a program in the memory 720, and perform the following process: determining, according to the signaling, whether the downlink control channel needs to be detected in one or more TTIs on the terminal.
  • the signaling is indication information carried on the group common PDCCH.
  • the indication information carried on the group common PDCCH is indication information of the N bit, and N is a positive integer greater than or equal to 1.
  • the signaling is indication information sent at a particular resource location.
  • the signaling is indication information that is sent by the base station to a specific resource location of the terminal by using high layer signaling.
  • the indication information is detected on the specific resource in each TTI or every M TTIs to determine whether a downlink control channel needs to be detected.
  • the TTI is a slot or a mini-slot.
  • the indication information is implemented by independent coding; or the indication information is transmitted in the channel structure of the PDCCH by using the same processing manner as the downlink control channel.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 700 and various circuits of memory represented by memory 720.
  • 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 710 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 730 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 700 is responsible for managing the bus architecture and general processing, and the memory 720 can store data used by the processor 700 in performing operations.
  • FIG. 8 is a schematic structural diagram of a base station, as shown in the figure, the base station includes:
  • the processor 800 is configured to read a program in the memory 820, and perform the following process: determining data that needs to be transmitted to the terminal through the downlink control channel in one or more TTIs;
  • the transceiver 810 is configured to receive and send data under the control of the processor 800, and perform the following process: the base station sends signaling to the terminal, to indicate, according to the signaling, whether the terminal needs to detect downlink in one or more TTIs according to the signaling. Control channel.
  • the signaling is indication information carried on the group common PDCCH.
  • the indication information carried on the group common PDCCH is indication information of the N bit, and N is a positive integer greater than or equal to 1.
  • the signaling is indication information sent at a particular resource location.
  • the signaling is indication information that is sent by the base station to a specific resource location of the terminal by using high layer signaling.
  • the indication information is detected on the specific resource in each TTI or every M TTIs to determine whether a downlink control channel needs to be detected.
  • the TTI is a slot or a mini-slot.
  • the indication information is implemented by independent coding; or the indication information is transmitted in the channel structure of the PDCCH by using the same processing manner as the downlink control channel.
  • the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 800 and various circuits of memory represented by memory 820.
  • 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 810 can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium.
  • the processor 800 is responsible for managing the bus architecture and general processing, and the memory 820 can store data used by the processor 800 in performing the operations.
  • FIG. 9 is a schematic structural diagram of a downlink control channel detecting apparatus, as shown in the figure, which may include:
  • the receiving module 901 is configured to receive signaling sent by the base station to the terminal.
  • the detecting module 902 is configured to determine, according to the signaling, whether the downlink control channel needs to be detected in one or more TTIs on the terminal.
  • FIG. 10 is a schematic structural diagram of a downlink control channel detecting apparatus, as shown in the figure, which may include:
  • a determining module 1001 configured to determine data that needs to be transmitted to the terminal through the downlink control channel in one or more TTIs;
  • the sending module 1002 is configured to send, to the terminal, signaling to the terminal, to indicate, according to the signaling, whether the terminal needs to detect the downlink control channel in one or more TTIs.
  • the technical solution provided by the embodiment of the present invention can enable the terminal to determine whether a downlink control channel for receiving scheduling data needs to be detected in one or more TTIs, thereby further reducing energy consumption on the terminal side.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

本发明公开了一种指示以及下行控制信道检测方法、设备、装置，包括：确定需要在一个或者多个传输时间间隔内通过下行控制信道向终端传输的数据；基站向终端发送信令，用以指示终端根据所述信令确定在一个或者多个传输时间间隔内是否需要检测下行控制信道。在终端上根据所述信令确定在一个或者多个传输时间间隔内是否需要检测下行控制信道。采用本发明后，当基站没有调度终端时，客观上造成了终端侧没有额外的能量消耗，也就降低了终端侧的能量消耗。

Description

一种指示以及下行控制信道检测方法、设备、装置
本申请要求在2017年9月11日提交中国专利局、申请号为201710812717.X、发明名称为“一种指示以及下行控制信道检测方法、设备、装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及无线通信技术领域，特别涉及一种指示以及下行控制信道检测方法、设备、装置。
背景技术
下面先对现有LTE(Long Term Evolution，长期演进)下行控制信道进行简要介绍。
1、PDCCH
LTE系统的PDCCH(physical downlink control channel，物理下行控制信道)用于承载调度信息以及其他控制信息。每个下行子帧的控制区域内可以有多个PDCCH，控制区域的大小由PCFICH(Physical Control Format Indicator Channel，物理控制格式指示信道)决定，占1～4个OFDM(Orthogonal Frequency Division Multiplex，正交频分复用)符号。一个控制信道的传输占用一个CCE(control channel element，控制信道单元)或者多个连续的CCE，每个CCE由9个REG(resource element group，资源单元组)组成，且PDCCH的CCE所包含的REG为没有用于承载PCFICH(Physical Control Format Indicator Channel，物理控制格式指示信道)和PHICH(Physical hybrid-ARQ indicator channel，物理HARQ指示信道)的REG。UE(User Equipment，用户设备)在non-DRX(非DRX；DRX：Discontinuous Reception，非连续接收)子帧监听PDCCH candidate(PDCCH候选)集合，即根据所要监听的DCI format(Downlink Control Information format，下行控制信令格式)来尝试解码搜索空间中的每一个PDCCH。
2、EPDCCH
为了扩展PDCCH的容量，在Rel-11引入了EPDCCH(Enhanced Physical Downlink Control Channel，增强物理下行控制信道)。EPDCCH在子帧中的数据区域进行传输，不能占用PDCCH的传输空间。配置了EPDCCH的终端在每个子帧中配置的PRB set(PRB组；PRB：physical resource block，物理资源块)内检测接收EPDCCH。
3、MPDCCH
对于EMTC(Enhanced MTC，增强MTC；MTC：Machine Type Communications，机器类通信)UE，其在高层配置的一个或者多个subframe(子帧)上检测接收MPDCCH(MTC PDCCH，机器类通信PDCCH)。
现有技术的不足在于：
在当前LTE系统中，终端需要在所有DRX ON状态的子帧内检测接收下行控制信道，但这会造成终端侧额外的能量消耗。
发明内容
本发明提供了一种指示以及下行控制信道检测方法、设备、装置，用以减少终端侧额外的能量消耗。
本发明实施例中提供了一种下行控制信道检测方法，包括：接收基站发送至终端的信令；在终端上根据所述信令确定在一个或者多个传输时间间隔(TTI)内是否需要检测下行控制信道。
实施中，所述信令是在group common PDCCH上承载的指示信息。
实施中，在group common PDCCH上承载的所述指示信息是N bit的指示信息，N为大于或等于1的正整数。
实施中，当N＝1时，指示信息为1状态时，指示终端需要在一个或者多个TTI内检测下行控制信道；指示信息为0状态时，指示终端不需要在一个或者多个TTI内检测下行控制信道；或者，当N>1时，用N bit信息位中的每一个bit位指示一个TTI内的下行控制信道是否需要检测。
实施中，所述信令是在特定资源位置上发送的指示信息。
实施中，所述信令是在基站通过高层信令配置给终端的特定资源位置上发送的指示信息。
实施中，在所述信令是在特定资源位置上发送的指示信息时，在每个TTI内或者每M个TTI内在所述特定资源上检测所述指示信息，以确定是否需要检测下行控制信道。其中，M为大于1的整数。
实施中，所述TTI为slot或者mini-slot。
实施中，所述指示信息通过独立编码实现；或者，所述指示信息采用与下行控制信道相同的处理方式，采用PDCCH的信道结构进行传输。
本发明实施例中提供了一种指示下行控制信道检测方法，包括：确定需要在一个或者多个TTI内通过下行控制信道向终端传输的数据；基站向终端发送信令，用以指示终端 根据所述信令确定在一个或者多个TTI内是否需要检测下行控制信道。
实施中，所述信令是在group common PDCCH上承载的指示信息。
实施中，在group common PDCCH上承载的所述指示信息是N bit的指示信息，N为大于或等于1的正整数。
实施中，当N＝1时，指示信息为1状态时，指示终端需要在一个或者多个TTI内检测下行控制信道；指示信息为0状态时，指示终端不需要在一个或者多个TTI内检测下行控制信道；或者，当N>1时，用N bit信息位中的每一个bit位指示一个TTI内的下行控制信道是否需要检测。
实施中，所述信令是在特定资源位置上发送的指示信息。
实施中，所述信令是在基站通过高层信令配置给终端的特定资源位置上发送的指示信息。
实施中，在所述信令是在特定资源位置上发送的指示信息时，在每个TTI内或者每M个TTI内在所述特定资源上检测所述指示信息，以确定是否需要检测下行控制信道。
实施中，所述TTI为slot或者mini-slot。
实施中，所述指示信息通过独立编码实现；或者，所述指示信息采用与下行控制信道相同的处理方式，采用PDCCH的信道结构进行传输。
本发明实施例中提供了一种用户设备，包括：收发机，用于在处理器的控制下接收和发送数据，执行下列过程：接收基站发送至终端的信令；处理器，用于读取存储器中的程序，执行下列过程：在终端上根据所述信令确定在一个或者多个TTI内是否需要检测下行控制信道。
实施中，所述信令是在group common PDCCH上承载的指示信息。
实施中，在group common PDCCH上承载的所述指示信息是N bit的指示信息，N为大于或等于1的正整数。
实施中，当N＝1时，指示信息为1状态时，指示终端需要在一个或者多个TTI内检测下行控制信道；指示信息为0状态时，指示终端不需要在一个或者多个TTI内检测下行控制信道；或者，当N>1时，用N bit信息位中的每一个bit位指示一个TTI内的下行控制信道是否需要检测。
实施中，所述信令是在特定资源位置上发送的指示信息。
实施中，所述信令是在基站通过高层信令配置给终端的特定资源位置上发送的指示信息。
实施中，在所述信令是在特定资源位置上发送的指示信息时，在每个TTI内或者每M 个TTI内在所述特定资源上检测所述指示信息，以确定是否需要检测下行控制信道。
实施中，所述TTI为slot或者mini-slot。
实施中，所述指示信息通过独立编码实现；或者，所述指示信息采用与下行控制信道相同的处理方式，采用PDCCH的信道结构进行传输。
本发明实施例中提供了一种基站，包括：处理器，用于读取存储器中的程序，执行下列过程：确定需要在一个或者多个TTI内通过下行控制信道向终端传输的数据；收发机，用于在处理器的控制下接收和发送数据，执行下列过程：
基站向终端发送信令，用以指示终端根据所述信令确定在一个或者多个TTI内是否需要检测下行控制信道。
实施中，所述信令是在group common PDCCH上承载的指示信息。
实施中，在group common PDCCH上承载的所述指示信息是N bit的指示信息，N为大于或等于1的正整数。
实施中，当N＝1时，指示信息为1状态时，指示终端需要在一个或者多个TTI内检测下行控制信道；指示信息为0状态时，指示终端不需要在一个或者多个TTI内检测下行控制信道；或者，当N>1时，用N bit信息位中的每一个bit位指示一个TTI内的下行控制信道是否需要检测。
实施中，所述信令是在特定资源位置上发送的指示信息。
实施中，所述信令是在基站通过高层信令配置给终端的特定资源位置上发送的指示信息。
实施中，在所述信令是在特定资源位置上发送的指示信息时，在每个TTI内或者每M个TTI内在所述特定资源上检测所述指示信息，以确定是否需要检测下行控制信道。
实施中，所述TTI为slot或者mini-slot。
实施中，所述指示信息通过独立编码实现；或者，所述指示信息采用与下行控制信道相同的处理方式，采用PDCCH的信道结构进行传输。
本发明实施例中提供了一种下行控制信道检测装置，包括：接收模块，用于接收基站发送至终端的信令；检测模块，用于在终端上根据所述信令确定在一个或者多个TTI内是否需要检测下行控制信道。
本发明实施例中提供了一种指示下行控制信道检测装置，包括：
确定模块，用于确定需要在一个或者多个TTI内通过下行控制信道向终端传输的数据；发送模块，用于在基站上向终端发送信令，用以指示终端根据所述信令确定在一个或者多个TTI内是否需要检测下行控制信道。
本发明实施例提供一种计算机存储介质，所述计算机可读存储介质存储有计算机可执行指令，所述计算机可执行指令用于使所述计算机执行上述终端侧执行的所述的方法。
本发明实施例提供一种计算机存储介质，所述计算机可读存储介质存储有计算机可执行指令，所述计算机可执行指令用于使所述计算机执行上述基站侧执行的所述的方法。
本发明有益效果如下：
在本发明实施例提供的技术方案中，由于基站通知终端是否在一个或者多个TTI内检测调度数据的下行控制信道，因此终端能够根据基站通知的指示信息确定是否在一个或者多个TTI内检测调度数据的下行控制信道。也因此在non-DRX子帧没有被调度时，终端不再需要在所有DRX ON状态的子帧内检测下行控制信道，从而使得当基站没有调度终端时，客观上造成了终端侧没有额外的能量消耗，也就降低了终端侧的能量消耗。
附图说明
此处所说明的附图用来提供对本发明的进一步理解，构成本发明的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1为本发明实施例中终端侧下行控制信道检测方法实施流程示意图；
图2为本发明实施例中基站侧指示下行控制信道检测方法实施流程示意图；
图3为本发明实施例1指示检测示意图；
图4为本发明实施例2指示检测示意图；
图5为本发明实施例3指示检测示意图；
图6为本发明实施例4指示检测示意图；
图7为本发明实施例中UE结构示意图；
图8为本发明实施例中基站结构示意图；
图9为本发明实施例中下行控制信道检测装置结构示意图；
图10为本发明实施例中指示下行控制信道检测装置结构示意图。
具体实施方式
发明人在发明过程中注意到：
在现有LTE系统中，TTI(Transmission Time Interval，传输时间间隔)长度固定为1ms，且一个或者多个PDCCH在每个TTI的前N个OFDM符号上传输或者在数据区域的一组PRB pair上传输或者在多个连续/不连续的子帧上传输，UE根据期望得到的信息在CSS(Cell-specific search space，小区专用搜索空间)或者USS(UE-specific search space，用 户专用搜索空间)上盲检自己的PDCCH。而这将在每个non-DRX子帧的控制区域盲检下行控制信道会造成额外的资源开销，因为终端并不是在每一个non-DRX子帧都会被调度。
然而，随着移动技术的发展，未来移动通信系统需要提供更低的网络时延并支持更丰富的业务类型，对于终端的能耗可能有更高的需求。在当前LTE系统中，终端需要在所有DRX ON状态的子帧内检测接收下行控制信道，如上所述，这样，当基站没有调度终端时，造成终端侧额外的能量消耗。但是，如何减少终端在没有数据传输的子帧内的能量消耗，当前并没有明确的方案。基于此，本发明实施例中提供了指示下行控制信道检测以及下行控制信道检测的方案，下面结合附图对本发明的具体实施方式进行说明。
在说明过程中，将分别从终端与基站侧的实施进行说明，其中基站侧将说明指示的过程，UE侧将说明检测的过程，然后还将给出二者配合实施的实例以更好地理解本发明实施例中给出的方案的实施。这样的说明方式并不意味着二者必须配合实施、或者必须单独实施，实际上，当终端与基站分开实施时，其也各自解决终端侧、基站侧的问题，而二者结合使用时，会获得更好的技术效果。
方案中基站将通过显式的指示信令，通知终端在一个或者多个TTI内是否需要检测接收下行控制信道。由于终端侧与基站侧之间是相互呼应的，具有相应的处理方式，因此重复之处不再赘述。
图1为终端侧下行控制信道检测方法实施流程示意图，如图所示，可以包括：
步骤101、接收基站发送至终端的信令；
步骤102、在终端上根据所述信令确定在一个或者多个TTI内是否需要检测下行控制信道。
具体的，终端按照基站发送的显式信令确定在一个或者多个TTI内是否需要检测以及接收下行控制信道。其中，检测和接收一般是连续的动作，例如终端在搜索空间内监听PDCCH，需要按照约定的DCI format在不同的PDCCH candidate上检测PDCCH。更具体的行为是终端需要把整个数据缓存下来，然后进行检测和解析。所以下面为了更好的符合具体实施，也会在具体实施说明中采用检测接收下行控制信道这样的表述。
具体实施时可以有两种方式，具体如下：
方式一
实施中，所述信令是在group common PDCCH上承载的指示信息。
具体实施中，在group common PDCCH上承载的所述指示信息是N bit的指示信息，N为大于或等于1的正整数。
具体的，终端接收group common PDCCH(组公共PDCCH)上承载的N bit指示信息， 确定在一个或者多个TTI内是否需要检测下行控制信道。
实施中，当N＝1时，指示信息为1状态时，指示终端需要在一个或者多个TTI内检测下行控制信道；指示信息为0状态时，指示终端不需要在一个或者多个TTI内检测下行控制信道。或者，当N>1时，用N bit信息位中的每一个bit位指示一个TTI内的下行控制信道是否需要检测。
具体的，N为大于或等于1的正整数。
当N＝1时，指示信息为1状态时，表示终端需要在一个或者多个slot(时隙)内检测接收下行控制信道；指示信息为0状态时，表示终端不需要在一个或者多个slot内检测接收下行控制信道。或者，N>1时，此时N bit信息位中的每一个bit位指示一个slot内的下行控制信道检测接收。例如，第一bit信息位指示终端是否需要在slot n内检测接收下行控制信道，第二bit信息位指示终端是否需要在slot n+1内检测接收下行控制信道，以此类推。
方式二
实施中，所述信令是在特定资源位置上发送的指示信息。
具体的，终端在特定的资源位置上接收下行控制信道检测指示信息。
具体实施中，所述信令是在基站通过高层信令配置给终端的特定资源位置上发送的指示信息。
具体的，所述特定的资源位置由基站通过高层信令配置给终端。
实施中，在所述信令是在特定资源位置上发送的指示信息时，在每个TTI内或者每M个TTI内在所述特定资源上检测所述指示信息，以确定是否需要检测下行控制信道。M为大于1的整数。
具体的，所述指示信息由N bit信息组成，例如N＝1bit。在每个TTI内首先在所述特定资源上检测该指示信息。
终端接收到所述指示信息后，确定是否需要在所述TTI内检测接收下行控制信道。例如当所述指示信息的状态为1时，终端需要在所述TTI内检测接收下行控制信道；当所述指示信息的状态为0时，终端不需要在所述TTI内检测接收下行控制信道。
实施中，采用每M个TTI内在所述特定资源上检测所述指示信息的方式是指所述特定资源每M个TTI内出现一次。即终端不需要在每个TTI上接收指示信息。
实施中，所述TTI为slot或者mini-slot。
实施中，所述指示信息通过独立编码实现；或者，所述指示信息采用与下行控制信道相同的处理方式，采用PDCCH的信道结构进行传输。
具体的，指示信息通过独立编码实现，例如通过重复编码，或者通过block编码，或 者其他不同于控制信道编码的方式实现。
或者，指示信息采用与下行控制信道相同的处理方式，采用PDCCH的信道结构进行传输。例如引入DCI format X，用于携带所述指示信息。DCI format采用固定的aggregation level(聚合等级)在指定的资源上传输。
图2为基站侧指示下行控制信道检测方法实施流程示意图，如图所示，可以包括：
步骤201、确定需要在一个或者多个TTI内通过下行控制信道向终端传输的数据；
步骤202、基站向终端发送信令，用以指示终端根据所述信令确定在一个或者多个TTI内是否需要检测下行控制信道。
具体的，基站发送显式信令用于指示终端是否需要在一个或者多个TTI内检测接收调度数据传输的下行控制信道。
相应的，具体实施时也可以有两种方式，具体如下：
方式一
实施中，所述信令是在group common PDCCH上承载的指示信息。
具体实施中，在group common PDCCH上承载的所述指示信息是N bit的指示信息，N为大于或等于1的正整数。
具体的，基站通过group common PDCCH发送下行控制信道盲检指示信息，指示终端在一个或者多个TTI内是否需要检测接收调度数据传输的下行控制信道。
实施中，当N＝1时，指示信息为1状态时，指示终端需要在一个或者多个TTI内检测下行控制信道；指示信息为0状态时，指示终端不需要在一个或者多个TTI内检测下行控制信道；或者，当N>1时，用N bit信息位中的每一个bit位指示一个TTI内的下行控制信道是否需要检测。
方式二
实施中，信令是在特定资源位置上发送的指示信息。
具体的，基站通过在特定资源上发送的指示信息指示终端在是否需要在一个或者多个TTI内检测接收调度数据传输的下行控制信道。
所述特定资源为基站通过高层信令配置给终端的资源集合，不同终端的所述特定资源可以相同或者不同。
当所述特定资源为多个终端共享时，终端可以仅发送一个公共的指示信息，终端均按照所述指示信息，确定是否需要在一个或者多个TTI内检测接收调度数据传输的下行控制信道。
实施中，所述信令是在基站通过高层信令配置给终端的特定资源位置上发送的指示信 息。
实施中，在所述信令是在特定资源位置上发送的指示信息时，在每个TTI内或者每M个TTI内在所述特定资源上检测所述指示信息，以确定是否需要检测下行控制信道。
实施中，所述TTI为slot或者mini-slot(微时隙)。
实施中，所述指示信息通过独立编码实现；或者，所述指示信息采用与下行控制信道相同的处理方式，采用PDCCH的信道结构进行传输。
具体的，基站在特定资源位置发送所述指示信息时，采用与下行控制信道相同的结构，或者独立的信道结构以及编码方式，例如block编码，重复编码等。
实施例1：
图3为实施例1指示检测示意图，如图所示，假设一个UE group内包含两个UE，为UE1和UE2，并假设UE1和UE2分别配置了两个控制资源集合，记为{CORESET1-1，CORESET1-2}以及{CORESET2-1，CORESET2-2}，UE1和UE2在对应的控制资源内检测接收下行控制信道之前，接收group common PDCCH上传输的1bit指示信息。该指示信息指示组内的终端是否需要在该slot内检测接收下行控制信道。
假设，当所述指示信息为状态1时，表示UE1和UE2需要在该slot内对应的CORESET内检测接收自身的调度数据的下行控制信道；当所述指示信息为状态0时，表示UE1和UE2不需要在该slot内对应的CORESET内检测接收自身的调度数据的下行控制信道。
当然，在group common PDCCH上传输的指示信息可以指示多个slot内调度数据的下行控制信道的检测接收。例如通知group common PDCCH传输周期内的所有slot内的下行控制信道的检测接收。
实施例2：
图4为实施例2指示检测示意图，如图所示，假设一个UE group内包含两个UE，为UE1和UE2.并假设UE1和UE2分别配置了两个控制资源集合，记为{CORESET1-1，CORESET1-2}以及{CORESET2-1，CORESET2-2}.UE1和UE2在对应的控制资源内检测接收下行控制信道之前，接收group common PDCCH上传输的N bit指示信息。该N bit指示信息指示UE1和UE2在N个slot内检测接收下行控制信道的状态。
本实施例假设N＝2，每一个信息位对应于一个slot内下行控制信道的检测状态，该指示信息指示组内的终端是否需要在该slot内检测接收下行控制信道。当所述指示信息为状态1时，表示UE1和UE2需要在该slot内对应的CORESET内检测接收自身的调度数据的下行控制信道；当所述指示信息为状态0时，表示UE1和UE2不需要在该slot内对应的CORESET内检测接收自身的调度数据的下行控制信道。假设指示信息为01，则表示 UE1和UE2在slot N内不需要检测调度数据的下行控制信道，且在slot N+1内需要检测调度数据的下行控制信道。具体如图4所示。在本实施例中，指示信息还可以有其他状态，具体如下表1所示。
表1：2bit指示信息的信息状态以及含义
Figure PCTCN2018099264-appb-000001
实施例3：
图5为实施例3指示检测示意图，如图所示，基站为基站配置特定的资源用于传输检测接收指示信息。在本实施例中，基站为每个终端配置传输所述指示信息的资源位置。例如，基站为终端配置了两个CORESET，并指定CORESET内的部分资源用于传输所述指示信息。或者，配置独立于CORESET的资源用于传输所述指示信息。
所述指示信息可以重用PDCCH的结构进行传输，也可以采用独立的信道结构以及编码方式进行传输(例如block编码，重复编码等)，具体实施中并不做任何限制。
终端首先在高层信令配置的特定资源内检测接收所述指示信息，并根据所述指示信息确定是否在本slot内检测接收调度数据的下行控制信道。例如，所述指示信息为1bit，当信息状态为1时，则表示终端需要在本slot内自己对应的CORESET内检测接收调度数据的下行控制信道；当信息状态为0时，则表示终端不需要在本slot内自己对应的CORESET内检测接收调度数据的下行控制信道。具体如图5所示。
当然，所述指示信息也可以指示多个slot内调度数据的下行控制信道的检测接收。
实施例4：
图6为实施例4指示检测示意图，如图所示，基于实施例3，假设UE1和UE2的部分CORESET有重叠，且调度数据的下行控制信道的检测指示信息在公共的部分进行传输。则基站通知终端重叠的资源位置。UE1和UE2首先需要在重叠部分检测接收所述指示信息。当所述指示信息为0时，UE1和UE2在当前slot内均不检测接收调度数据的下行控制 信道；当所述指示信息为1时，UE1和UE2在当前slot内需要检测接收调度数据的下行控制信道。
基于同一发明构思，本发明实施例中还提供了涉及下行控制信道检测、指示下行控制信道检测的设备，由于这些设备解决问题的原理与一种下行控制信道检测方法、一种指示下行控制信道检测方法相似，因此这些设备的实施可以参见方法的实施，重复之处不再赘述。
图7为UE结构示意图，如图所示，用户设备包括：
收发机710，用于在处理器700的控制下接收和发送数据，执行下列过程：接收基站发送至终端的信令；
处理器700，用于读取存储器720中的程序，执行下列过程：在终端上根据所述信令确定在一个或者多个TTI内是否需要检测下行控制信道。
实施中，所述信令是在group common PDCCH上承载的指示信息。
实施中，在group common PDCCH上承载的所述指示信息是N bit的指示信息，N为大于或等于1的正整数。
实施中，当N＝1时，指示信息为1状态时，指示终端需要在一个或者多个TTI内检测下行控制信道；指示信息为0状态时，指示终端不需要在一个或者多个TTI内检测下行控制信道；或者，当N>1时，用N bit信息位中的每一个bit位指示一个TTI内的下行控制信道是否需要检测。
实施中，所述信令是在特定资源位置上发送的指示信息。
实施中，所述信令是在基站通过高层信令配置给终端的特定资源位置上发送的指示信息。
实施中，在所述信令是在特定资源位置上发送的指示信息时，在每个TTI内或者每M个TTI内在所述特定资源上检测所述指示信息，以确定是否需要检测下行控制信道。
实施中，所述TTI为slot或者mini-slot。
实施中，所述指示信息通过独立编码实现；或者，所述指示信息采用与下行控制信道相同的处理方式，采用PDCCH的信道结构进行传输。
其中，在图7中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器700代表的一个或多个处理器和存储器720代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机710可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的 单元。针对不同的用户设备，用户接口730还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器700负责管理总线架构和通常的处理，存储器720可以存储处理器700在执行操作时所使用的数据。
图8为基站结构示意图，如图所示，基站中包括：
处理器800，用于读取存储器820中的程序，执行下列过程：确定需要在一个或者多个TTI内通过下行控制信道向终端传输的数据；
收发机810，用于在处理器800的控制下接收和发送数据，执行下列过程：基站向终端发送信令，用以指示终端根据所述信令确定在一个或者多个TTI内是否需要检测下行控制信道。
实施中，所述信令是在group common PDCCH上承载的指示信息。
实施中，在group common PDCCH上承载的所述指示信息是N bit的指示信息，N为大于或等于1的正整数。
实施中，当N＝1时，指示信息为1状态时，指示终端需要在一个或者多个TTI内检测下行控制信道；指示信息为0状态时，指示终端不需要在一个或者多个TTI内检测下行控制信道；或者，当N>1时，用N bit信息位中的每一个bit位指示一个TTI内的下行控制信道是否需要检测。
实施中，所述信令是在特定资源位置上发送的指示信息。
实施中，所述信令是在基站通过高层信令配置给终端的特定资源位置上发送的指示信息。
实施中，在所述信令是在特定资源位置上发送的指示信息时，在每个TTI内或者每M个TTI内在所述特定资源上检测所述指示信息，以确定是否需要检测下行控制信道。
实施中，所述TTI为slot或者mini-slot。
实施中，所述指示信息通过独立编码实现；或者，所述指示信息采用与下行控制信道相同的处理方式，采用PDCCH的信道结构进行传输。
其中，在图8中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器800代表的一个或多个处理器和存储器820代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机810可以是多个元件，即包括发送机和收发机，提供用于在传输介质上与各种其他装置通信的单元。处理器800负责管理总线架构和通常的处理，存储器820可以存储处理器800在执 行操作时所使用的数据。
在实施本发明实施例提供的技术方案时，可以按如下方式实施。
图9为下行控制信道检测装置结构示意图，如图所示，可以包括：
接收模块901，用于接收基站发送至终端的信令；
检测模块902，用于在终端上根据所述信令确定在一个或者多个TTI内是否需要检测下行控制信道。
图10为指示下行控制信道检测装置结构示意图，如图所示，可以包括：
确定模块1001，用于确定需要在一个或者多个TTI内通过下行控制信道向终端传输的数据；
发送模块1002，用于在基站上向终端发送信令，用以指示终端根据所述信令确定在一个或者多个TTI内是否需要检测下行控制信道。
为了描述的方便，以上所述装置的各部分以功能分为各种模块或单元分别描述。当然，在实施本发明时可以把各模块或单元的功能在同一个或多个软件或硬件中实现。
综上所述，采用本发明实施例提供的技术方案可以使终端确定是否需要在一个或者多个TTI内检测接收调度数据的下行控制信道，从而进一步降低终端侧的能量消耗。
本领域内的技术人员应明白，本发明的实施例可提供为方法、系统、或计算机程序产品。因此，本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。

Claims (40)

  1. 一种下行控制信道检测方法，其特征在于，包括：
    接收基站发送至终端的信令；
    在终端上根据所述信令确定在一个或者多个传输时间间隔TTI内是否需要检测下行控制信道。
  2. 如权利要求1所述的方法，其特征在于，所述信令是在组公共物理下行控制信道group common PDCCH上承载的指示信息。
  3. 如权利要求2所述的方法，其特征在于，在group common PDCCH上承载的所述指示信息是N bit的指示信息，N为大于或等于1的正整数。
  4. 如权利要求3所述的方法，其特征在于，
    当N＝1时，指示信息为1状态时，指示终端需要在一个或者多个TTI内检测下行控制信道；指示信息为0状态时，指示终端不需要在一个或者多个TTI内检测下行控制信道；
    或者，当N>1时，用N bit信息位中的每一个bit位指示一个TTI内的下行控制信道是否需要检测。
  5. 如权利要求1所述的方法，其特征在于，所述信令是在特定资源位置上发送的指示信息。
  6. 如权利要求5所述的方法，其特征在于，所述信令是在基站通过高层信令配置给终端的特定资源位置上发送的指示信息。
  7. 如权利要求5所述的方法，其特征在于，在所述信令是在特定资源位置上发送的指示信息时，在每个TTI内或者每M个TTI内在所述特定资源上检测所述指示信息，以确定是否需要检测下行控制信道，M为大于1的整数。
  8. 如权利要求7所述的方法，其特征在于，所述TTI为时隙slot或者微时隙mini-slot。
  9. 如权利要求5所述的方法，其特征在于，所述指示信息通过独立编码实现；或者，所述指示信息采用与下行控制信道相同的处理方式，采用PDCCH的信道结构进行传输。
  10. 一种指示下行控制信道检测方法，其特征在于，包括：
    确定需要在一个或者多个TTI内通过下行控制信道向终端传输的数据；
    基站向终端发送信令，用以指示终端根据所述信令确定在一个或者多个TTI内是否需要检测下行控制信道。
  11. 如权利要求10所述的方法，其特征在于，所述信令是在group common PDCCH上承载的指示信息。
  12. 如权利要求11所述的方法，其特征在于，在group common PDCCH上承载的所述指示信息是N bit的指示信息，N为大于或等于1的正整数。
  13. 如权利要求12所述的方法，其特征在于，
    当N＝1时，指示信息为1状态时，指示终端需要在一个或者多个TTI内检测下行控制信道；指示信息为0状态时，指示终端不需要在一个或者多个TTI内检测下行控制信道；
    或者，当N>1时，用N bit信息位中的每一个bit位指示一个TTI内的下行控制信道是否需要检测。
  14. 如权利要求10所述的方法，其特征在于，所述信令是在特定资源位置上发送的指示信息。
  15. 如权利要求14所述的方法，其特征在于，所述信令是在基站通过高层信令配置给终端的特定资源位置上发送的指示信息。
  16. 如权利要求14所述的方法，其特征在于，在所述信令是在特定资源位置上发送的指示信息时，在每个TTI内或者每M个TTI内在所述特定资源上检测所述指示信息，以确定是否需要检测下行控制信道，M为大于1的整数。
  17. 如权利要求16所述的方法，其特征在于，所述TTI为slot或者mini-slot。
  18. 如权利要求14所述的方法，其特征在于，所述指示信息通过独立编码实现；或者，所述指示信息采用与下行控制信道相同的处理方式，采用PDCCH的信道结构进行传输。
  19. 一种用户设备，其特征在于，包括：
    收发机，用于在处理器的控制下接收和发送数据，执行下列过程：接收基站发送至终端的信令；
    处理器，用于读取存储器中的程序，执行下列过程：在终端上根据所述信令确定在一个或者多个TTI内是否需要检测下行控制信道。
  20. 如权利要求19所述的用户设备，其特征在于，所述信令是在group common PDCCH上承载的指示信息。
  21. 如权利要求20所述的用户设备，其特征在于，在group common PDCCH上承载的所述指示信息是N bit的指示信息，N为大于或等于1的正整数。
  22. 如权利要求21所述的用户设备，其特征在于，当N＝1时，指示信息为1状态时，指示终端需要在一个或者多个TTI内检测下行控制信道；指示信息为0状态时，指示终端不需要在一个或者多个TTI内检测下行控制信道；
    或者，当N>1时，用N bit信息位中的每一个bit位指示一个TTI内的下行控制信道是 否需要检测。
  23. 如权利要求19所述的用户设备，其特征在于，所述信令是在特定资源位置上发送的指示信息。
  24. 如权利要求23所述的用户设备，其特征在于，所述信令是在基站通过高层信令配置给终端的特定资源位置上发送的指示信息。
  25. 如权利要求23所述的用户设备，其特征在于，在所述信令是在特定资源位置上发送的指示信息时，在每个TTI内或者每M个TTI内在所述特定资源上检测所述指示信息，以确定是否需要检测下行控制信道，M为大于1的整数。
  26. 如权利要求25所述的用户设备，其特征在于，所述TTI为slot或者mini-slot。
  27. 如权利要求23所述的用户设备，其特征在于，所述指示信息通过独立编码实现；或者，所述指示信息采用与下行控制信道相同的处理方式，采用PDCCH的信道结构进行传输。
  28. 一种基站，其特征在于，包括：
    处理器1300，用于读取存储器1320中的程序，执行下列过程：确定需要在一个或者多个TTI内通过下行控制信道向终端传输的数据；
    收发机1310，用于在处理器1300的控制下接收和发送数据，执行下列过程：基站向终端发送信令，用以指示终端根据所述信令确定在一个或者多个TTI内是否需要检测下行控制信道。
  29. 如权利要求28所述的基站，其特征在于，所述信令是在group common PDCCH上承载的指示信息。
  30. 如权利要求29所述的基站，其特征在于，在group common PDCCH上承载的所述指示信息是N bit的指示信息，N为大于或等于1的正整数。
  31. 如权利要求30所述的基站，其特征在于，当N＝1时，指示信息为1状态时，指示终端需要在一个或者多个TTI内检测下行控制信道；指示信息为0状态时，指示终端不需要在一个或者多个TTI内检测下行控制信道；
    或者，当N>1时，用N bit信息位中的每一个bit位指示一个TTI内的下行控制信道是否需要检测。
  32. 如权利要求28所述的基站，其特征在于，所述信令是在特定资源位置上发送的指示信息。
  33. 如权利要求32所述的基站，其特征在于，所述信令是在基站通过高层信令配置给终端的特定资源位置上发送的指示信息。
  34. 如权利要求32所述的基站，其特征在于，在所述信令是在特定资源位置上发送的指示信息时，在每个TTI内或者每M个TTI内在所述特定资源上检测所述指示信息，以确定是否需要检测下行控制信道，M为大于1的整数。
  35. 如权利要求34所述的基站，其特征在于，所述TTI为slot或者mini-slot。
  36. 如权利要求32所述的基站，其特征在于，所述指示信息通过独立编码实现；或者，所述指示信息采用与下行控制信道相同的处理方式，采用PDCCH的信道结构进行传输。
  37. 一种下行控制信道检测装置，其特征在于，包括：
    接收模块，用于接收基站发送至终端的信令；
    检测模块，用于在终端上根据所述信令确定在一个或者多个TTI内是否需要检测下行控制信道。
  38. 一种指示下行控制信道检测装置，其特征在于，包括：
    确定模块，用于确定需要在一个或者多个TTI内通过下行控制信道向终端传输的数据；
    发送模块，用于在基站上向终端发送信令，用以指示终端根据所述信令确定在一个或者多个TTI内是否需要检测下行控制信道。
  39. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质存储有计算机指令，当所述计算机指令在计算机上运行时，使得计算机执行如权利要求1-9中任一项所述的方法。
  40. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质存储有计算机指令，当所述计算机指令在计算机上运行时，使得计算机执行如权利要求10-18中任一项所述的方法。
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