WO2022135029A1 - 搜索空间集切换方法及装置、可读存储介质 - Google Patents

搜索空间集切换方法及装置、可读存储介质 Download PDF

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Publication number
WO2022135029A1
WO2022135029A1 PCT/CN2021/133532 CN2021133532W WO2022135029A1 WO 2022135029 A1 WO2022135029 A1 WO 2022135029A1 CN 2021133532 W CN2021133532 W CN 2021133532W WO 2022135029 A1 WO2022135029 A1 WO 2022135029A1
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WIPO (PCT)
Prior art keywords
search space
space set
default search
downlink control
control information
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PCT/CN2021/133532
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English (en)
French (fr)
Inventor
赵思聪
雷珍珠
周化雨
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展讯通信（上海）有限公司
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Publication of WO2022135029A1 publication Critical patent/WO2022135029A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams

Definitions

  • the present invention relates to the technical field of wireless communication, and in particular, to a search space set switching method and device, and a readable storage medium.
  • UE battery life is an important aspect of user experience, which will affect the experience of using 5G devices and/or services.
  • the 5G system introduces some techniques to indicate changes in UE behavior, so that the UE can enter a power saving state under appropriate conditions to save UE power.
  • the switching of this state involves a variety of configuration changes, including Bandwidth Part (BWP) switching (switching to a smaller BWP), switching of the physical downlink control channel (Physical Downlink Control Channel, PDCCH) detection period (switching to a larger period), skipping part of the PDCCH monitoring ( PDCCH monitoring skipping) and cross-slot scheduling (cross-slot scheduling) with a minimum scheduling interval greater than 0, etc.
  • BWP Bandwidth Part
  • PDCCH Physical Downlink Control Channel
  • PDCCH Physical Downlink Control Channel
  • skipping part of the PDCCH monitoring PDCCH monitoring skipping
  • cross-slot scheduling cross-slot scheduling
  • methods for reducing PDCCH monitoring mainly include search space set switching (search space set switching, SS set switching) and PDCCH skipping.
  • SS set switching can switch the PDCCH monitoring period in the search space configuration to change the monitoring density of PDCCH to achieve power saving effect.
  • This mechanism has been standardized in the NR technology of unlicensed frequency bands (NR-U) in Rel.16 version , and then based on this standardized mechanism, some improvements can be made in combination with energy-saving requirements.
  • search space set switching can change multiple PDCCH monitoring parameters, which is more flexible than PDCCH skipping.
  • the embodiments of the present invention solve the technical problem of how to switch multiple search space sets.
  • an embodiment of the present invention provides a method for switching a search space set, including: delivering first downlink control information to a user equipment, where the first downlink control information is used to indicate a method used after entering an activation time. A non-default search space set; sending trigger signaling to the user equipment, where the trigger signaling is used to trigger the user equipment to switch between the non-default search space set and the default search space set.
  • the first downlink control information includes a target indication field, where the target indication field is used to indicate identification information of the non-default search space set.
  • the target indication field is in parallel with at least one of the following fields: a wake-up indication field and a secondary cell sleep indication field.
  • the target indication field is located in the secondary cell dormancy indication field.
  • the sending the trigger signaling to the user equipment includes: sending second downlink control information to the user equipment, where the second downlink control information is used to trigger switching to the non-default search space set.
  • the method before delivering the second downlink control information to the user equipment, the method further includes: delivering the configured timing duration to the user equipment, so that the user equipment switches to the non-default search space set after switching to the non-default search space set. , when it is detected that the duration of the non-default search space set used reaches the timing duration, switch to the default search space set.
  • an embodiment of the present invention further provides another method for switching a search space set, including: delivering second downlink control information to the user equipment, where the second downlink control information includes a target indication field, the target The indication field is used for instructing to trigger the user equipment to switch between the non-default search space set and the default search space set.
  • the method before delivering the second downlink control information to the user equipment, the method further includes: delivering the configured timing duration to the user equipment, so that the user equipment detects the non-default search space set after switching to the non-default search space set.
  • the duration of the non-default search space set used reaches the timing duration, switch to the default search space set.
  • the value of the target indication field is used to indicate to use the non-default search space set or the default search space set.
  • the value of the target indication field is used to indicate the identification information of the non-default search space set, and different values of the target indication field correspond to the identification information of different non-default search space sets.
  • the value of the target indication field is used to indicate the identification information of the non-default search space set, and different values of the target indication field correspond to the identification information of different non-default search space sets.
  • An embodiment of the present invention further provides a search space set switching apparatus, including: a first delivery unit, configured to deliver first downlink control information to a user equipment, where the first downlink control information is used to indicate entry into activation A set of non-default search spaces used after time; a second delivery unit, configured to deliver trigger signaling to the user equipment, where the trigger signaling is used to trigger the user equipment to perform a match between the set of non-default search spaces and the user equipment. Switch between default search space sets.
  • An embodiment of the present invention further provides another apparatus for switching a search space set, including: a third delivery unit, configured to deliver second downlink control information to the user equipment, where the second downlink control information includes a target indication field, and the The target indication field is used to indicate to trigger the user equipment to switch between the non-default search space set and the default search space set.
  • a third delivery unit configured to deliver second downlink control information to the user equipment, where the second downlink control information includes a target indication field, and the The target indication field is used to indicate to trigger the user equipment to switch between the non-default search space set and the default search space set.
  • An embodiment of the present invention also provides yet another apparatus for switching search space sets, including a memory and a processor, where the memory stores a computer program that can run on the processor, and when the processor runs the computer program The steps of any one of the above search space set switching methods are performed.
  • An embodiment of the present invention also provides another method for switching a search space set, including: receiving first downlink control information, and obtaining a non-default search space set used after entering the activation time from the first downlink control information; receiving trigger signaling to switch between the non-default search space set and the default search space set according to the trigger signaling.
  • the first downlink control information includes a target indication field, where the target indication field is used to indicate identification information of the non-default search space set.
  • the target indication field is in parallel with at least one of the following fields: a wake-up indication field and a secondary cell sleep indication field.
  • the target indication field is located in the secondary cell dormancy indication field.
  • the receiving trigger signaling includes: receiving second downlink control information, and acquiring the trigger signaling from the second downlink control information; the second downlink control information is used to schedule the non-default downlink control information. set of search spaces.
  • the method before receiving the second downlink control information, the method further includes: acquiring a timing duration from the second downlink control information.
  • the switching between the non-default search space set and the default search space set according to the trigger signaling includes: after switching to the non-default search space set, detecting When the duration of using the non-default search space set reaches the timing duration, switch to the default search space set.
  • An embodiment of the present invention further provides a method for switching a search space set, including: receiving second downlink control information; and acquiring a target indication field from the second downlink control information, where the target indication field is used to indicate that a trigger is triggered in a non- Switch between the default search space set and the default search space set.
  • the length of the second downlink control information is 1 bit.
  • the method before receiving the second downlink control information, the method further includes: acquiring the timing duration from the second downlink control information.
  • the method further includes: after switching to the non-default search space set, detecting that the duration of using the non-default search space set reaches the When the time period is long, switch to the default search space set.
  • the value of the target indication field is used to indicate to use the non-default search space set or the default search space set.
  • the value of the target indication field is used to indicate the identification information of the non-default search space set, and different values of the target indication field correspond to the identification information of different non-default search space sets.
  • the timing duration is in one-to-one correspondence with the non-default search space set.
  • An embodiment of the present invention further provides a search space set switching device, including: a first receiving unit, configured to receive first downlink control information, and obtain, from the first downlink control information, a non-volatile data used after entering the activation time A default search space set; and a second receiving unit, configured to receive trigger signaling, and switch between the non-default search space set and the default search space set according to the trigger signaling.
  • a search space set switching device including: a first receiving unit, configured to receive first downlink control information, and obtain, from the first downlink control information, a non-volatile data used after entering the activation time A default search space set; and a second receiving unit, configured to receive trigger signaling, and switch between the non-default search space set and the default search space set according to the trigger signaling.
  • An embodiment of the present invention further provides another apparatus for switching search space sets, including: a third receiving unit, configured to receive second downlink control information; an acquisition unit, configured to acquire a target indication field from the second downlink control information , the target indication field is used to indicate triggering switching between the non-default search space set and the default search space set.
  • An embodiment of the present invention also provides another apparatus for switching search space sets, including a memory and a processor, where the memory stores a computer program that can run on the processor, and when the processor runs the computer program The steps of any one of the above search space set switching methods are performed.
  • An embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium is a non-volatile storage medium or a non-transitory storage medium, on which a computer program is stored, and the computer program is executed by a processor
  • the steps of any one of the above search space set switching methods are executed at runtime.
  • the first downlink control information is delivered to the user equipment, and the first downlink control information includes a non-default search space set used after entering the activation time.
  • the user equipment activates after receiving the first downlink control information, and learns the non-default search space set after entering the activation time.
  • Trigger signaling is sent to the user equipment, where the trigger signaling is used to trigger the user equipment to switch between the non-default search space set and the default search space set. After receiving the trigger signaling, the user equipment can switch between the non-default search space set and the default search space set. It can be seen that the search space set switching method provided in the embodiment of the present invention can implement switching between multiple search space set groups.
  • the second downlink control information includes a target indication field, and the target indication field is used to instruct and trigger the user equipment to switch between the non-default search space set and the default search space set, and the second downlink control information
  • the length of the information is 1 bit.
  • FIG. 1 is a flowchart of a search space set switching method in an embodiment of the present invention
  • FIG. 2 is a flowchart of another search space set switching method in an embodiment of the present invention.
  • FIG. 3 is a flowchart of yet another search space set switching method in an embodiment of the present invention.
  • FIG. 4 is a flowchart of yet another search space set switching method in an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a search space set switching apparatus in an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of another apparatus for switching search space sets in an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of another apparatus for switching search space sets in an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of still another apparatus for switching a search space set in an embodiment of the present invention.
  • the first downlink control information is delivered to the user equipment, and the first downlink control information includes a non-default search space set used after entering the activation time.
  • the user equipment activates after receiving the first downlink control information, and learns the non-default search space set after entering the activation time.
  • Trigger signaling is sent to the user equipment, where the trigger signaling is used to trigger the user equipment to switch between the non-default search space set and the default search space set. After receiving the trigger signaling, the user equipment can switch between the non-default search space set and the default search space set. It can be seen that the search space set switching method provided in the embodiment of the present invention can implement switching between multiple search space set groups.
  • An embodiment of the present invention provides a method for switching a search space set. Referring to FIG. 1 , the following describes in detail through specific steps.
  • the search space set switching method provided by the following steps S101 to S102 may be performed by a baseband chip in the user equipment.
  • Step S101 delivering the first downlink control information to the user equipment.
  • the first downlink control information (Downlink Control Information, DCI) may be used to indicate a non-default search space set (none default search space set group) used after the user equipment enters the activation time.
  • DCI Downlink Control Information
  • the first downlink control information may be wake-up signal downlink control information, or may be other types of downlink control information.
  • the wake-up signal can be used to indicate whether the user equipment needs to wake up in the next discontinuous reception (Discontinuous Reception, DRX) cycle, that is, whether to start the DRX onduration timer.
  • the wake-up signal is based on a common DCI (group common DCI), and the corresponding specific format is DCI format 2_6.
  • the bits in the DCI that is, the wake-up signal DCI
  • each block corresponds to a UE
  • each block includes two fields.
  • the first field The wake-up indication field is used to indicate whether the user equipment needs to be woken up
  • the second field is the secondary cell dormancy indication field (SCell dormancy indication), used to indicate which secondary cell groups need to be switched to dormant BWP , there is no PDCCH monitoring on the dormant BWP.
  • SCell dormancy indication used to indicate which secondary cell groups need to be switched to dormant BWP , there is no PDCCH monitoring on the dormant BWP.
  • a target indication field may be added to the existing wake-up signal DCI, where the target indication field is used to indicate the identification information of the non-default search space set.
  • the newly added target indication field may be paralleled with the above-mentioned wake-up indication field and secondary cell sleep indication field. That is to say, in the embodiment of the present invention, the wake-up signal DCI includes three fields, respectively corresponding to the wake-up indication field, the sleep indication field of the secondary cell, and the target indication field.
  • the newly added target indication field may also reuse the secondary cell sleep indication field, that is, 1 bit may be added to the secondary cell sleep indication field for the target indication field.
  • the value of the first bit in the secondary cell sleep indication field may be used to represent the target indication field.
  • the first bit in the secondary cell sleep indication field is 0, that is, the target indication field is 0, it indicates that the bit is used for sleep indication; when the first bit in the secondary cell sleep indication field is 0
  • the value is 1, it means that the bit target indication field is used to indicate the non-default search space set.
  • Step S102 sending trigger signaling to the user equipment.
  • the trigger signaling may be used to trigger the user equipment to switch between the default search space set and the non-default search space set.
  • the trigger signaling may be the second downlink control information, that is, the base station may deliver the second DCI to the user equipment, and use the second DCI to indicate the non-default search space set.
  • the second DCI may be scheduling DCI, or may be other types of DCI.
  • the triggering manner may be a specific bit field carried in the DCI to indicate the handover trigger, or may be the handover to the target search space set after listening to the DCI, which is not specifically limited in this embodiment of the present invention.
  • the user After receiving the trigger signaling sent by the base station, the user can switch to the non-default search space set.
  • the base station may further configure a timing duration for the user equipment, and deliver the timing duration to the user equipment through high-layer signaling.
  • the user equipment may switch from the non-default search space set to the default search space set if it detects that the duration of the used non-default search space set reaches a predetermined time period.
  • the corresponding timing durations may be different.
  • the timing duration corresponding to the non-default search space set 1 is set as the first duration
  • the timing duration corresponding to the non-default search space set 2 is set as the second duration
  • the first duration and the second duration are not equal. It can be understood that, for different non-default search space sets, the corresponding timing durations may be equal.
  • the base station is configured with 4 indexes in total.
  • Index 0 corresponds to the default search space set
  • index 1 corresponds to the non-default search space set of service type 1
  • index 2 corresponds to the non-default search space set of service type 2
  • index 3 corresponds to the non-default search space set of service type 3.
  • the base station sends a wake-up signal DCI to the user equipment, and at the same time, the base station sends the user equipment an index (index 2) of a non-default search space set to be switched to after wake-up. After being woken up, the user equipment uses the default search space set (the corresponding index is index 0) to monitor the PDCCH. After receiving the trigger signaling, the user equipment switches to the non-default search space set corresponding to index 2.
  • the user equipment switches to the default search space set (index 0) to monitor the PDCCH.
  • the base station may use the above solution to indicate other non-default search space sets.
  • An embodiment of the present invention further provides another method for switching a search space set. Referring to FIG. 2 , the following describes in detail through specific steps.
  • the search space set switching method provided in the following step S201 may be performed by a base station device.
  • the base station device may have a built-in control chip, and the control chip in the base station device executes the search space set switching method provided in the following step S201.
  • Step S201 delivering the second downlink control information to the user equipment.
  • the second DCI may include a target indication field, and the target indication field may be used to instruct the user equipment to switch between the default search space set and the non-default search space set, and the length of the second DCI may be 1 bit.
  • a 1-bit target indication field may be added to the second DCI, and the default search space set for PDCCH monitoring or a non-default search space is determined by the value of the corresponding bit in the target indication field. set to perform PDCCH monitoring.
  • a target indication field with more bits may also be added to the second DCI.
  • the second DCI may be a scheduling DCI, or may be other types of DCI.
  • the base station may further configure the timing duration to the user equipment, and deliver the timing duration to the user equipment through high-layer signaling.
  • the user equipment may switch from the non-default search space set to the default search space set if it detects that the duration of the used non-default search space set reaches a predetermined time period.
  • the corresponding timing durations may be different.
  • the timing duration corresponding to the non-default search space set 1 is set as the first duration
  • the timing duration corresponding to the non-default search space set 2 is set as the second duration
  • the first duration and the second duration are not equal. It can be understood that, for different non-default search space sets, the corresponding timing durations may be equal.
  • the base station is configured with two search space sets, namely the default search space set and the non-default search space set 1.
  • the bit corresponding to the target indication field is 0, the user equipment is instructed to use the default search space set; when the bit corresponding to the target indication field is 1, the user equipment is instructed to use the non-default search space set 1.
  • the base station configures the bit corresponding to the target indication field to take the value 1, and delivers the scheduling DCI to the user equipment.
  • the user equipment After receiving the scheduling DCI, the user equipment obtains the target indication field from it, reads the value of the corresponding bit of the target indication field as 1, and can switch from the default search space set to the non-default search space set 1.
  • the base station is configured with three search space sets, namely, a default search space set, a non-default search space set 1, and a non-default search space set 2.
  • a default search space set When the bit field corresponding to the target indication field is 0, the user equipment is instructed to use the non-default search space set 1; when the bit field corresponding to the target indication field is 1, the user equipment is instructed to use the non-default search space set 2.
  • the base station configures the bit corresponding to the target indication field to be 0, and delivers the scheduling DCI to the user equipment, where the scheduling DCI includes the timing duration 1 corresponding to the non-default search space set 1 .
  • the user equipment uses the default search space set to perform PDCCH monitoring after discontinuous reception. After receiving the scheduling DCI issued by the base station, the value of the target indication field can be obtained therefrom. When the user equipment detects that the value of the target indication field is 0, it switches from the default search space set to the non-default search space set 1. When the user equipment detects that the duration of using the non-default search space set 1 reaches the timing duration 1, it switches from the non-default search space set 1 to the default search space set.
  • An embodiment of the present invention further provides another method for switching a search space set. Referring to FIG. 3 , the following describes in detail through specific steps.
  • the search space set switching method provided by the following steps S301 to S302 may be performed by a baseband chip in the user equipment.
  • Step S301 Receive first downlink control information, and obtain a non-default search space set used after entering the activation time from the first downlink control information.
  • the first downlink control information (Downlink Control Information, DCI) may be used to indicate a non-default search space set (none default search space set group) used after the user equipment enters the activation time.
  • the first downlink control information may be delivered by the base station, that is, the user equipment may receive the first downlink control information delivered by the base station.
  • the first downlink control information may be wake-up signal downlink control information, or may be other types of downlink control information.
  • the wake-up signal can be used to indicate whether the user equipment needs to wake up in the next discontinuous reception (Discontinuous Reception, DRX) cycle, that is, whether to start the DRX onduration timer.
  • the wake-up signal is based on a common DCI (group common DCI), and the corresponding specific format is DCI format 2_6.
  • the bits in the DCI that is, the wake-up signal DCI
  • the DCI format 2_6 format are divided into multiple blocks, each block corresponds to a UE, and each block includes two fields, the first field.
  • the wake-up indication field is used to indicate whether the user equipment needs to be woken up, and the second field is the secondary cell dormancy indication field (SCell dormancy indication), used to indicate which secondary cell groups need to be switched to dormant BWP , there is no PDCCH monitoring on the dormant BWP.
  • SCell dormancy indication used to indicate which secondary cell groups need to be switched to dormant BWP , there is no PDCCH monitoring on the dormant BWP.
  • a target indication field may be added to the existing wake-up signal DCI, where the target indication field is used to indicate identification information of a non-default search space set.
  • the newly added target indication field may be paralleled with the above-mentioned wake-up indication field and secondary cell sleep indication field. That is to say, in the embodiment of the present invention, the wake-up signal DCI includes three fields, respectively corresponding to the wake-up indication field, the sleep indication field of the secondary cell, and the target indication field.
  • the newly added target indication field may also reuse the secondary cell sleep indication field, that is, 1 bit may be added to the secondary cell sleep indication field for the target indication field.
  • the value of the first bit in the secondary cell sleep indication field may be used to represent the target indication field.
  • the first bit in the secondary cell sleep indication field is 0, that is, the target indication field is 0, it indicates that the bit is used for sleep indication; when the first bit in the secondary cell sleep indication field is 0
  • the value is 1, it means that the bit target indication field is used to indicate the non-default search space set.
  • Step S302 Receive trigger signaling, and switch between the non-default search space set and the default search space set according to the trigger signaling.
  • the trigger signaling may be used to trigger the user equipment to switch between the default search space set and the non-default search space set.
  • the trigger signaling may be the second downlink control information, that is, the base station may deliver the second DCI to the user equipment, and use the second DCI to indicate the non-default search space set.
  • the second DCI may be the scheduling DCI, or may be other types of DCI.
  • the user After receiving the trigger signaling sent by the base station, the user can switch to the non-default search space set.
  • the base station may further configure a timing duration for the user equipment, and deliver the timing duration to the user equipment through high-layer signaling.
  • the user equipment may switch from the non-default search space set to the default search space set if it detects that the duration of the used non-default search space set reaches a predetermined time period.
  • the corresponding timing durations may be different.
  • the timing duration corresponding to the non-default search space set 1 is set as the first duration
  • the timing duration corresponding to the non-default search space set 2 is set as the second duration
  • the first duration and the second duration are not equal. It can be understood that, for different non-default search space sets, the corresponding timing durations may be equal.
  • the base station is configured with 4 indexes in total.
  • Index 0 corresponds to the default search space set
  • index 1 corresponds to the non-default search space set of service type 1
  • index 2 corresponds to the non-default search space set of service type 2
  • index 3 corresponds to the non-default search space set of service type 3.
  • the base station sends a wake-up signal DCI to the user equipment, and at the same time, the base station sends the user equipment an index (index 2) of a non-default search space set to be switched to after wake-up. After being woken up, the user equipment uses the default search space set (the corresponding index is index 0) to monitor the PDCCH. After receiving the trigger signaling, the user equipment switches to the non-default search space set corresponding to index 2.
  • the user equipment switches to the default search space set (index 0) to monitor the PDCCH.
  • the base station may use the above solution to indicate other non-default search space sets.
  • steps S301 to S302 correspond to steps S101 to S102, wherein steps S101 to S102 describe the search space set switching method provided by the present application from the base station side, and steps S201 to S202 are from the user equipment side The search space set switching method provided by this application is described.
  • the embodiment of the present invention also provides yet another search space set switching method. Referring to FIG. 4 , the following describes in detail through specific steps.
  • the search space set switching method provided by the following steps S401 to S402 may be executed by the base station equipment.
  • the base station device may have a built-in control chip, and the control chip in the base station device executes the search space set switching method provided by the following steps S401 to S402.
  • Step S401 receiving second downlink control information.
  • Step S402 acquiring a target indication field from the second downlink control information.
  • the second DCI may include a target indication field, and the target indication field may be used to instruct the user equipment to switch between the default search space set and the non-default search space set, and the length of the second DCI may be 1 bit.
  • a 1-bit target indication field may be added to the second DCI, and the default search space set for PDCCH monitoring or a non-default search space is determined by the value of the corresponding bit in the target indication field. set to perform PDCCH monitoring.
  • a target indication field with more bits may also be added to the second DCI.
  • the base station may further configure a timing duration for the user equipment, and deliver the timing duration to the user equipment through high-layer signaling.
  • the user equipment may switch from the non-default search space set to the default search space set if it detects that the duration of the used non-default search space set reaches a predetermined time period.
  • the corresponding timing durations may be different.
  • the timing duration corresponding to the non-default search space set 1 is set as the first duration
  • the timing duration corresponding to the non-default search space set 2 is set as the second duration
  • the first duration and the second duration are not equal. It can be understood that, for different non-default search space sets, the corresponding timing durations may be equal.
  • the second DCI may be a scheduling DCI, or may be other types of DCI.
  • the base station is configured with two search space sets, namely the default search space set and the non-default search space set 1.
  • the bit value corresponding to the target indication field is 0, the user equipment is instructed to use the default search space set; when the bit corresponding to the target indication field is 1, the user equipment is instructed to use the non-default search space set 1.
  • the base station configures the bit corresponding to the target indication field to take the value 1, and delivers the scheduling DCI to the user equipment.
  • the user equipment After receiving the scheduling DCI, the user equipment obtains the target indication field from it, reads the value of the corresponding bit of the target indication field as 1, and can switch from the default search space set to the non-default search space set 1.
  • the base station is configured with three search space sets, namely, a default search space set, a non-default search space set 1, and a non-default search space set 2.
  • a default search space set When the bit field corresponding to the target indication field is 0, the user equipment is instructed to use the non-default search space set 1; when the bit field corresponding to the target indication field is 1, the user equipment is instructed to use the non-default search space set 2.
  • the base station configures the bit corresponding to the target indication field to be 0, and delivers the scheduling DCI to the user equipment, and the scheduling DCI includes the timing duration 1 corresponding to the non-default search space set 1.
  • the user equipment uses the default search space set to perform PDCCH monitoring after discontinuous reception. After receiving the scheduling DCI issued by the base station, the value of the target indication field can be obtained therefrom. When the user equipment detects that the value of the target indication field is 0, it switches from the default search space set to the non-default search space set 1. When the user equipment detects that the duration of using the non-default search space set 1 reaches the timing duration 1, it switches from the non-default search space set 1 to the default search space set.
  • steps S401 to S402 correspond to step S201, wherein step S201 is to describe the search space set switching method provided by the present application from the base station side, and steps S401 to S402 are to describe the search space set provided by the present application from the user equipment side. Spatial set switching method.
  • a search space set switching apparatus 50 in an embodiment of the present invention including: a first issuing unit 501 and a second issuing unit 502, wherein:
  • a first delivery unit 501 configured to deliver first downlink control information to the user equipment, where the first downlink control information is used to indicate a non-default search space set used after entering the activation time;
  • the second issuing unit 502 is configured to issue trigger signaling to the user equipment, where the trigger signaling is used to trigger the user equipment to switch between the non-default search space set and the default search space set.
  • the above-mentioned search space set switching apparatus 50 may correspond to a chip with a data processing function in the base station equipment; or a chip module including a chip with a data processing function in the base station equipment, or correspond to the base station equipment.
  • FIG. 6 another apparatus 60 for switching a search space set in an embodiment of the present invention is given, including: a second issuing unit 601, wherein:
  • a third delivery unit 601 configured to deliver second downlink control information to the user equipment, where the second downlink control information includes a target indication field, where the target indication field is used to indicate triggering the user equipment in a non-default search space switch between the set and the default search space set.
  • the specific execution process of the second issuing unit 601 may refer to step S201 provided in the foregoing embodiment, which is not repeated in this embodiment of the present invention.
  • the above-mentioned search space set switching apparatus 60 may correspond to a chip with a data processing function in the base station equipment; or a chip module including a chip with a data processing function in the base station equipment, or correspond to the base station equipment.
  • a search space set switching apparatus 70 in an embodiment of the present invention including: a first receiving unit 701 and a second receiving unit 702, wherein:
  • a first receiving unit 701 configured to receive first downlink control information, and obtain a non-default search space set used after entering the activation time from the first downlink control information;
  • the second receiving unit 702 is configured to receive trigger signaling, and switch between the non-default search space set and the default search space set according to the trigger signaling.
  • the above-mentioned search space set switching apparatus 70 may correspond to a chip with a data processing function in the user equipment, such as a baseband chip; or a chip module including a chip with a data processing function in the user equipment, or correspond to user equipment.
  • FIG. 8 another apparatus 80 for switching search space sets in an embodiment of the present invention is shown, including: a third receiving unit 801 and an obtaining unit 802, wherein:
  • a third receiving unit 801, configured to receive second downlink control information
  • the obtaining unit 802 is configured to obtain a target indication field from the second downlink control information, where the target indication field is used to instruct triggering switching between a non-default search space set and a default search space set.
  • step S401 for the specific execution flow of the third receiving unit 801 and the obtaining unit 802, reference may be made to step S401 to step S402 provided in the foregoing embodiment, which is not repeated in this embodiment of the present invention.
  • the above-mentioned search space set switching device 80 may correspond to a chip with a data processing function in the user equipment, such as a baseband chip; or a chip module including a chip with a data processing function in the user equipment, or correspond to user equipment.
  • each module/unit included in each device and product described in the above embodiments it may be a software module/unit, a hardware module/unit, or a part of a software module/unit, a part of which is a software module/unit. is a hardware module/unit.
  • each module/unit included therein may be implemented by hardware such as circuits, or at least some of the modules/units may be implemented by a software program.
  • Running on the processor integrated inside the chip the remaining (if any) part of the modules/units can be implemented by hardware such as circuits; for each device and product applied to or integrated in the chip module, the modules/units contained therein can be They are all implemented by hardware such as circuits, and different modules/units can be located in the same component of the chip module (such as chips, circuit modules, etc.) or in different components, or at least some of the modules/units can be implemented by software programs.
  • the software program runs on the processor integrated inside the chip module, and the remaining (if any) part of the modules/units can be implemented by hardware such as circuits; for each device and product applied to or integrated in the terminal, each module contained in it
  • the units/units may all be implemented in hardware such as circuits, and different modules/units may be located in the same component (eg, chip, circuit module, etc.) or in different components in the terminal, or at least some of the modules/units may be implemented by software programs Realization, the software program runs on the processor integrated inside the terminal, and the remaining (if any) part of the modules/units can be implemented in hardware such as circuits.
  • An embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium is a non-volatile storage medium or a non-transitory storage medium, on which a computer program is stored, and the computer program is executed by a processor
  • the steps of the search space set switching method provided by any of the foregoing embodiments are executed at runtime.
  • An embodiment of the present invention further provides another apparatus for switching search space sets, including a memory and a processor, where the memory stores a computer program that can run on the processor, and when the processor runs the computer program Perform the steps of any of the foregoing search space set switching methods performed by the base station side.
  • An embodiment of the present invention further provides another apparatus for switching search space sets, including a memory and a processor, where the memory stores a computer program that can run on the processor, and when the processor runs the computer program The steps of any of the above-mentioned methods for switching search space sets performed by the user equipment side are performed.

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Abstract

一种搜索空间集切换方法及装置、可读存储介质，所述方法包括：向用户设备下发第一下行控制信息，所述第一下行控制信息用于指示进入激活时间后使用的非默认搜索空间集；向所述用户设备下发触发信令，所述触发信令用于触发所述用户设备在所述非默认搜索空间集与默认搜索空间集之间切换。上述方案能够实现对多个搜索空间集进行切换。

Description

搜索空间集切换方法及装置、可读存储介质
本申请要求于2020年12月25日提交中国专利局、申请号为202011568353.3、发明名称为“搜索空间集切换方法及装置、可读存储介质”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，尤其涉及一种搜索空间集切换方法及装置、可读存储介质。
背景技术
用户设备(User Equipment，UE)的电池寿命是用户体验的一个重要方面，这将影响5G设备和/或服务的使用感受。为此，5G系统引入了一些技术用于指示UE行为的改变，使得UE可以在适当的条件下进入一种省电状态以节省UE电能，这种状态的切换涉及到多种配置的改变，包括带宽单元(Bandwidth Part,BWP)的切换(切换至较小的BWP)，物理下行控制信道(Physical Downlink Control Channel，PDCCH)检测周期的切换(切换至较大周期)，跳过部分PDCCH的监听(PDCCH monitoring skipping)和采用最小调度间隔大于0的跨时隙调度(cross-slot scheduling)等等，触发这些配置改变的信令由下行控制信息(Downlink Control Information，DCI)来承载得到大部分公司的支持。
在5G NR Release 16版本的标准技术研究中，完成了基于跨时隙调度的节能技术部分，在即将开展的Release 17版本的研究里，降低PDCCH的监听技术将会被作为重点讨论的技术之一。目前，降低 PDCCH监听的方法主要包括搜索空间集切换(search space set switching，SS set switching)和PDCCH skipping。SS set switching可切换搜索空间配置中的PDCCH监听周期来改变PDCCH的监听密度以达到省电效果，这一机制已在Rel.16版本的非授权频段的NR技术(NR-U)中得到了标准化，后续可以基于这个已标准化的机制来结合节能需求做一些改进。另外，搜索空间集切换可以改变多个PDCCH监听参数，比PDCCH skipping更加灵活。
然而，现有技术中，并未公开如何对多个搜索空间集进行切换。
发明内容
本发明实施例解决的是如何对多个搜索空间集进行切换的技术问题。
为解决上述技术问题，本发明实施例提供一种搜索空间集切换方法，包括：向用户设备下发第一下行控制信息，所述第一下行控制信息用于指示进入激活时间后使用的非默认搜索空间集；向所述用户设备下发触发信令，所述触发信令用于触发所述用户设备在所述非默认搜索空间集与默认搜索空间集之间切换。
可选的，所述第一下行控制信息包括目标指示域，所述目标指示域用于指示所述非默认搜索空间集的标识信息。
可选的，所述目标指示域与如下至少一个域并列：唤醒指示域、辅小区休眠指示域。
可选的，所述目标指示域位于辅小区休眠指示域中。
可选的，所述向所述用户设备下发触发信令，包括：向所述用户设备下发第二下行控制信息，所述第二下行控制信息用于触发切换至所述非默认搜索空间集。
可选的，在向所述用户设备下发第二下行控制信息之前，还包括： 向所述用户设备下发配置的定时时长，使得所述用户设备在切换至所述非默认搜索空间集后，检测到使用的所述非默认搜索空间集的时长达到所述定时时长时，切换至所述默认搜索空间集。
为解决上述技术问题，本发明实施例还提供了另一种搜索空间集切换方法，包括：向用户设备下发第二下行控制信息，所述第二下行控制信息包括目标指示域，所述目标指示域用于指示触发所述用户设备在非默认搜索空间集与默认搜索空间集之间切换。
可选的，在向用户设备下发第二下行控制信息之前，还包括：向所述用户设备下发配置的定时时长，使得所述用户设备在切换至所述非默认搜索空间集后，检测到使用的所述非默认搜索空间集的时长达到所述定时时长时，切换至所述默认搜索空间集。
可选的，所述目标指示域的取值用于指示使用所述非默认搜索空间集或所述默认搜索空间集。
可选的，所述目标指示域的取值用于指示所述非默认搜索空间集的标识信息，且所述目标指示域的不同取值对应不同的非默认搜索空间集的标识信息。
可选的，所述目标指示域的取值用于指示所述非默认搜索空间集的标识信息，且所述目标指示域的不同取值对应不同的非默认搜索空间集的标识信息。
本发明实施例还提供了一种搜索空间集切换装置，包括：第一下发单元，用于向用户设备下发第一下行控制信息，所述第一下行控制信息用于指示进入激活时间后使用的非默认搜索空间集；第二下发单元，用于向所述用户设备下发触发信令，所述触发信令用于触发所述用户设备在所述非默认搜索空间集与默认搜索空间集之间切换。
本发明实施例还提供了另一种搜索空间集切换装置，包括：第三下发单元，用于向用户设备下发第二下行控制信息，所述第二下行控制信息包括目标指示域，所述目标指示域用于指示触发所述用户设备 在非默认搜索空间集与默认搜索空间集之间切换。
本发明实施例还提供了再一种搜索空间集切换装置，包括存储器和处理器，所述存储器上存储有可在所述处理器上运行的计算机程序，所述处理器运行所述计算机程序时执行上述任一种所述的搜索空间集切换方法的步骤。
本发明实施例还提供了又一种搜索空间集切换方法，包括：接收第一下行控制信息，从所述第一下行控制信息中获取进入激活时间后使用的非默认搜索空间集；接收触发信令，根据所述触发信令在所述非默认搜索空间集与所述默认搜索空间集之间进行切换。
可选的，所述第一下行控制信息包括目标指示域，所述目标指示域用于指示所述非默认搜索空间集的标识信息。
可选的，所述目标指示域与如下至少一个域并列：唤醒指示域、辅小区休眠指示域。
可选的，所述目标指示域位于辅小区休眠指示域中。
可选的，所述接收触发信令，包括：接收第二下行控制信息，从所述第二下行控制信息中获取所述触发信令；所述第二下行控制信息用于调度所述非默认搜索空间集。
可选的，在接收所述第二下行控制信息之前，还包括：从所述第二下行控制信息中获取定时时长。
可选的，所述根据所述触发信令在所述非默认搜索空间集与所述默认搜索空间集之间进行切换，包括：在切换至在切换至所述非默认搜索空间集后，检测到使用所述非默认搜索空间集的时长达到所述定时时长时，切换至所述默认搜索空间集。
本发明实施例还提供了再一种搜索空间集切换方法，包括：接收第二下行控制信息；从所述第二下行控制信息中获取目标指示域，所述目标指示域用于指示触发在非默认搜索空间集与默认搜索空间集 之间切换。
可选的，所述第二下行控制信息的长度为1比特。
可选的，在接收第二下行控制信息之前，还包括：从所述第二下行控制信息中获取定时时长。
可选的，在从所述第二下行控制信息中获取目标指示域之后，还包括：在切换至所述非默认搜索空间集后，检测到使用所述非默认搜索空间集的时长达到所述定时时长时，切换至所述默认搜索空间集。
可选的，所述目标指示域的取值用于指示使用所述非默认搜索空间集或所述默认搜索空间集。
可选的，所述目标指示域的取值用于指示所述非默认搜索空间集的标识信息，且所述目标指示域的不同取值对应不同的非默认搜索空间集的标识信息。
可选的，所述定时时长与所述非默认搜索空间集一一对应。
本发明实施例还提供了一种搜索空间集切换装置，包括：第一接收单元，用于接收第一下行控制信息，从所述第一下行控制信息中获取进入激活时间后使用的非默认搜索空间集；第二接收单元，用于接收触发信令，根据所述触发信令在所述非默认搜索空间集与所述默认搜索空间集之间进行切换。
本发明实施例还提供了另一种搜索空间集切换装置，包括：第三接收单元，用于接收第二下行控制信息；获取单元，用于从所述第二下行控制信息中获取目标指示域，所述目标指示域用于指示触发在非默认搜索空间集与默认搜索空间集之间切换。
本发明实施例还提供了又一种搜索空间集切换装置，包括存储器和处理器，所述存储器上存储有可在所述处理器上运行的计算机程序，所述处理器运行所述计算机程序时执行上述任一种所述的搜索空间集切换方法的步骤。
本发明实施例还提供了一种计算机可读存储介质，所述计算机可读存储介质为非易失性存储介质或非瞬态存储介质，其上存储有计算机程序，所述计算机程序被处理器运行时执行上述任一种所述的搜索空间集切换方法的步骤。
与现有技术相比，本发明实施例的技术方案具有以下有益效果：
向用户设备下发第一下行控制信息，在第一下行控制信息中包括用于指示进入激活时间后使用的非默认搜索空间集。用户设备在接收到第一下行控制信息后激活，并获知进入激活时间后的非默认搜索空间集。向用户设备下发触发信令，触发信令用于触发用户设备在非默认搜索空间集与默认搜索空间集之间切换。用户设备在接收到触发信令后，即可在非默认搜索空间集与默认搜索空间集之间切换。由此可见，本发明实施例中提供的搜索空间集切换方法可以实现在多个搜索空间集组之间的切换。
向用户设备下发第二下行控制信息，第二下行控制信息包括目标指示域，目标指示域用于指示触发用户设备在非默认搜索空间集与默认搜索空间集之间切换，且第二下行控制信息的长度为1比特。用户设备在接收到第二下行控制信息后，从中获取目标指示域，实现在非默认搜索空间集与默认搜索空间集之间切换。
附图说明
图1是本发明实施例中的一种搜索空间集切换方法的流程图；
图2是本发明实施例中的另一种搜索空间集切换方法的流程图；
图3是本发明实施例中的又一种搜索空间集切换方法的流程图；
图4是本发明实施例中的再一种搜索空间集切换方法的流程图；
图5是本发明实施例中的一种搜索空间集切换装置的结构示意图；
图6是本发明实施例中的另一种搜索空间集切换装置的结构示意图；
图7是本发明实施例中的又一种搜索空间集切换装置的结构示意图；
图8是本发明实施例中的再一种搜索空间集切换装置的结构示意图。
具体实施方式
如上所述，现有技术中，并未公开如何对多个搜索空间集组进行切换。
在本发明实施例中，向用户设备下发第一下行控制信息，在第一下行控制信息中包括用于指示进入激活时间后使用的非默认搜索空间集。用户设备在接收到第一下行控制信息后激活，并获知进入激活时间后的非默认搜索空间集。向用户设备下发触发信令，触发信令用于触发用户设备在非默认搜索空间集与默认搜索空间集之间切换。用户设备在接收到触发信令后，即可在非默认搜索空间集与默认搜索空间集之间切换。由此可见，本发明实施例中提供的搜索空间集切换方法可以实现在多个搜索空间集组之间的切换。
为使本发明的上述目的、特征和有益效果能够更为明显易懂，下面结合附图对本发明的具体实施例做详细的说明。
本发明实施例提供了一种搜索空间集切换方法，参照图1，以下通过具体步骤进行详细说明。
在具体实施中，下述步骤S101～步骤S102所提供的搜索空间集切换方法可以由用户设备中的基带芯片执行。
步骤S101，向用户设备下发第一下行控制信息。
在具体实施中，第一下行控制信息(Downlink Control  Information，DCI)可以用于指示用户设备进入激活时间后使用的非默认搜索空间集(none default search space set group)。
在本发明实施例中，第一下行控制信息可以为唤醒信号下行控制信息，也可以为其他类型的下行控制信息。在实际应用中可知，唤醒信号可以用于指示用户设备在接下来的一个非连续接收(Discontinuous Reception，DRX)周期是否需要唤醒，即是否启动DRX onduration timer。该唤醒信号基于公共DCI(group common DCI)，对应的具体格式为DCI format 2_6。
在现有协议中可知，DCI format 2_6格式对应的DCI(也即唤醒信号DCI)中的比特被分成了多个block，每一个block对应一个UE且每一个block包括两个域，第一个域为唤醒指示域(wake-up indication)，用于指示用户设备是否需要被唤醒，第二个域为辅小区休眠指示域(SCell dormancy indication)，用于指示哪些辅小区组需要被切换到休眠BWP上，在休眠BWP上无PDCCH监听。
在本发明实施例中，可以在现有的唤醒信号DCI中，新增一个目标指示域，该目标指示域用于指示非默认搜索空间集的标识信息。
在具体实施中，新增的目标指示域可以与上述的唤醒指示域、辅小区休眠指示域并列。也就是说，在本发明实施例中，唤醒信号DCI中包括三个域，分别对应唤醒指示域、辅小区休眠指示域以及目标指示域。
在具体实施中，新增的目标指示域也可以复用辅小区休眠指示域，也就是说，可以在辅小区休眠指示域中新增1比特，用于目标指示域。
在本发明实施例中，可以将辅小区休眠指示域中的第一个比特的取值来表征目标指示域。当辅小区休眠指示域中的第一个比特取值为0，也即目标指示域的取值为0时，表征该比特用于休眠指示；当辅小区休眠指示域中的第一个比特取值为1时，也即表征该比特位目标 指示域，用于指示非默认搜索空间集。
步骤S102，向用户设备下发触发信令。
在具体实施中，触发信令可以用于触发用户设备在默认搜索空间集与非默认搜索空间集之间切换。
在本发明实施例中，触发信令可以为第二下行控制信息，也即基站可以向用户设备下发第二DCI，通过第二DCI指示非默认搜索空间集。第二DCI可以为调度DCI，也可以为其他类型的DCI。触发方式可以为DCI中承载具体的比特域来指示切换触发，也可以是监听到该DCI即切换到目标搜索空间集，本发明实施例不做具体限制。
用户设在接收到基站下发的触发信令后，即可切换至非默认搜索空间集。
在具体实施中，基站在向用户设备下发第二DCI之前，还可以为用户设备配置定时时长，并通过高层信令将定时时长下发至用户设备。用户设备在切换至非默认搜索空间集之后，若检测到使用的非默认搜索空间集的时长达到定时时长，则可以由非默认搜索空间集切换至默认搜索空间集。
在具体实施中，针对不同的非默认搜索空间集，其对应的定时时长可以不同。例如，设定非默认搜索空间集1对应的定时时长为第一时长，非默认搜索空间集2对应的定时时长为第二时长，且第一时长与第二时长不等。可以理解的是，针对不同的非默认搜索空间集，其对应的定时时长可以相等。
下面对本发明上述实施例中提供的搜索空间集切换方法进行举例说明。
基站共配置了4个索引，索引0对应默认搜索空间集，索引1对应业务类型1的非默认搜索空间集，索引2对应业务类型2的非默认搜索空间集，索引3对应业务类型3的非默认搜索空间集。
基站向用户设备下发唤醒信号DCI，同时基站向用户设下发在唤醒之后需要切换到的非默认搜索空间集的索引(索引2)。用户设备在被唤醒后，采用默认搜索空间集(对应的索引为索引0)进行PDCCH监听。在接收到触发信令后，用户设备切换到索引2对应的非默认搜索空间集。
若用户设备切换到索引2对应的非默认搜索空间集的时长达到预设的定时时长，则用户设备切换至默认搜索空间集(索引0)监听PDCCH。
在下一个DRX周期，基站可以采用上述的方案指示其他的非默认搜索空间集。
本发明实施例还提供了另一种搜索空间集切换方法，参照图2，以下通过具体步骤进行详细说明。
在具体实施中，下述步骤S201所提供的搜索空间集切换方法可以由基站设备所执行。具体的，基站设备中可以内置有控制芯片，由基站设备中的控制芯片执行下述步骤S201所提供的搜索空间集切换方法。
步骤S201，向用户设备下发第二下行控制信息。
在具体实施中，第二DCI可以包括目标指示域，目标指示域可以用于指示触发用户设备在默认搜索空间集与非默认搜索空间集之间切换，且第二DCI的长度可以为1比特。
在本发明实施例中，可以在第二DCI中新增1个比特的目标指示域，通过该目标指示域对应比特的取值，来确定采用默认搜索空间集进行PDCCH监听还是采用非默认搜索空间集进行PDCCH监听。
可以理解的是，第二DCI中也可以新增更多个比特的目标指示域。目标指示域对应的比特个数越多，其对应的能够指示的非默认搜索空间集越多。
在本发明实施例中，第二DCI可以为调度DCI，也可以为其他类型的DCI。
在具体实施中，基站在向用户设备下发第二DCI之前，还可以向用户设备配置定时时长，并通过高层信令将定时时长下发至用户设备。用户设备在切换至非默认搜索空间集之后，若检测到使用的非默认搜索空间集的时长达到定时时长，则可以由非默认搜索空间集切换至默认搜索空间集。
在具体实施中，针对不同的非默认搜索空间集，其对应的定时时长可以不同。例如，设定非默认搜索空间集1对应的定时时长为第一时长，非默认搜索空间集2对应的定时时长为第二时长，且第一时长与第二时长不等。可以理解的是，针对不同的非默认搜索空间集，其对应的定时时长可以相等。
下面对本发明上述实施例中提供的搜索空间集切换方法进行举例说明。
设定基站配置了2个搜索空间集，分别为默认搜索空间集以及非默认搜索空间集1。目标指示域对应的比特取值为0时，指示用户设备使用默认搜索空间集；目标指示域对应的比特取值为1时，指示用户设备使用非默认搜索空间集1。基站配置目标指示域对应的比特取值为1，并向用户设备下发调度DCI。
用户设备在接收到调度DCI后，从中获取到目标指示域，读取到目标指示域对应比特的取值为1，即可从默认搜索空间集切换至非默认搜索空间集1。
设定基站配置了3个搜索空间集，分别为默认搜索空间集、非默认搜索空间集1以及非默认搜索空间集2。目标指示域对应的比特域取值为0时，指示用户设备使用非默认搜索空间集1；目标指示域对应的比特域取值为1时，指示用户设备使用非默认搜索空间集2。基站配置目标指示域对应的比特取值为0，并向用户设备下发调度DCI， 调度DCI包括非默认搜索空间集1对应的定时时长1。
用户设备在进行非连续接收后使用默认搜索空间集进行PDCCH监听。在接收到基站下发的调度DCI之后，可以从中获取目标指示域的取值。用户设备检测到目标指示域的取值为0，则从默认搜索空间集切换至非默认搜索空间集1。用户设备检测到使用非默认搜索空间集1的时长达到定时时长1时，从非默认搜索空间集1切换至默认搜索空间集。
可见，在本发明实施例中，还能够实现仅通过1比特的目标指示域，实现3个搜索空间空间集之间的切换，进一步降低指示搜索空间集切换的下行控制信息的比特个数，降低下行开销。
本发明实施例还提供了又一种搜索空间集切换方法，参照图3，以下通过具体步骤进行详细说明。
在具体实施中，下述步骤S301～步骤S302所提供的搜索空间集切换方法可以由用户设备中的基带芯片执行。
步骤S301，接收第一下行控制信息，从所述第一下行控制信息中获取进入激活时间后使用的非默认搜索空间集。
在具体实施中，第一下行控制信息(Downlink Control Information，DCI)可以用于指示用户设备进入激活时间后使用的非默认搜索空间集(none default search space set group)。第一下行控制信息可以由基站下发，也即用户设备可以接收基站下发的第一下行控制信息。
在本发明实施例中，第一下行控制信息可以为唤醒信号下行控制信息，也可以为其他类型的下行控制信息。
在实际应用中可知，唤醒信号可以用于指示用户设备在接下来的一个非连续接收(Discontinuous Reception，DRX)周期是否需要唤醒，即是否启动DRX onduration timer。该唤醒信号基于公共DCI(group common DCI)，对应的具体格式为DCI format 2_6。
在现有协议中可知，DCI format 2_6格式对应的DCI(也即唤醒信号DCI)中的比特被分成了多个block，每一个block对应一个UE且每一个block包括两个域，第一个域为唤醒指示域(wake-up indication)，用于指示用户设备是否需要被唤醒，第二个域为辅小区休眠指示域(SCell dormancy indication)，用于指示哪些辅小区组需要被切换到休眠BWP上，在休眠BWP上无PDCCH监听。
在本发明实施例中，可以在现有的唤醒信号DCI中，新增一个目标指示域，该目标指示域用于指示非默认搜索空间集的标识信息。
在具体实施中，新增的目标指示域可以与上述的唤醒指示域、辅小区休眠指示域并列。也就是说，在本发明实施例中，唤醒信号DCI中包括三个域，分别对应唤醒指示域、辅小区休眠指示域以及目标指示域。
在具体实施中，新增的目标指示域也可以复用辅小区休眠指示域，也就是说，可以在辅小区休眠指示域中新增1比特，用于目标指示域。
在本发明实施例中，可以将辅小区休眠指示域中的第一个比特的取值来表征目标指示域。当辅小区休眠指示域中的第一个比特取值为0，也即目标指示域的取值为0时，表征该比特用于休眠指示；当辅小区休眠指示域中的第一个比特取值为1时，也即表征该比特位目标指示域，用于指示非默认搜索空间集。
步骤S302，接收触发信令，根据所述触发信令在所述非默认搜索空间集与所述默认搜索空间集之间进行切换。
在具体实施中，触发信令可以用于触发用户设备在默认搜索空间集与非默认搜索空间集之间切换。
在本发明实施例中，触发信令可以为第二下行控制信息，也即基站可以向用户设备下发第二DCI，通过第二DCI指示非默认搜索空间集。第二DCI可以为调度DCI，也可以为其他类型的DCI。
用户设在接收到基站下发的触发信令后，即可切换至非默认搜索空间集。
在具体实施中，基站在向用户设备下发第二DCI之前，还可以为用户设备配置定时时长，并通过高层信令将定时时长下发至用户设备。用户设备在切换至非默认搜索空间集之后，若检测到使用的非默认搜索空间集的时长达到定时时长，则可以由非默认搜索空间集切换至默认搜索空间集。
在具体实施中，针对不同的非默认搜索空间集，其对应的定时时长可以不同。例如，设定非默认搜索空间集1对应的定时时长为第一时长，非默认搜索空间集2对应的定时时长为第二时长，且第一时长与第二时长不等。可以理解的是，针对不同的非默认搜索空间集，其对应的定时时长可以相等。
下面对本发明上述实施例中提供的搜索空间集切换方法进行举例说明。
基站共配置了4个索引，索引0对应默认搜索空间集，索引1对应业务类型1的非默认搜索空间集，索引2对应业务类型2的非默认搜索空间集，索引3对应业务类型3的非默认搜索空间集。
基站向用户设备下发唤醒信号DCI，同时基站向用户设下发在唤醒之后需要切换到的非默认搜索空间集的索引(索引2)。用户设备在被唤醒后，采用默认搜索空间集(对应的索引为索引0)进行PDCCH监听。在接收到触发信令后，用户设备切换到索引2对应的非默认搜索空间集。
若用户设备切换到索引2对应的非默认搜索空间集的时长达到预设的定时时长，则用户设备切换至默认搜索空间集(索引0)监听PDCCH。
在下一个DRX周期，基站可以采用上述的方案指示其他的非默认搜索空间集。
在具体实施中，步骤S301～步骤S302与步骤S101～步骤S102对应，其中，步骤S101～步骤S102为从基站侧描述本申请提供的搜索空间集切换方法，步骤S201～步骤S202为从用户设备侧描述本申请提供的搜索空间集切换方法。
本发明实施例还提供了再一种搜索空间集切换方法，参照图4，以下通过具体步骤进行详细说明。
在具体实施中，下述步骤S401～步骤S402所提供的搜索空间集切换方法可以由基站设备所执行。具体的，基站设备中可以内置有控制芯片，由基站设备中的控制芯片执行下述步骤S401～步骤S402所提供的搜索空间集切换方法。
步骤S401，接收第二下行控制信息。
步骤S402，从所述第二下行控制信息中获取目标指示域。
在具体实施中，第二DCI可以包括目标指示域，目标指示域可以用于指示触发用户设备在默认搜索空间集与非默认搜索空间集之间切换，且第二DCI的长度可以为1比特。
在本发明实施例中，可以在第二DCI中新增1个比特的目标指示域，通过该目标指示域对应比特的取值，来确定采用默认搜索空间集进行PDCCH监听还是采用非默认搜索空间集进行PDCCH监听。
可以理解的是，第二DCI中也可以新增更多个比特的目标指示域。目标指示域对应的比特个数越多，其对应的能够指示的非默认搜索空间集越多。
在具体实施中，基站在向用户设备下发第二DCI之前，还可以为用户设备配置定时时长，并通过高层信令将定时时长下发至用户设备。用户设备在切换至非默认搜索空间集之后，若检测到使用的非默认搜索空间集的时长达到定时时长，则可以由非默认搜索空间集切换至默认搜索空间集。
在具体实施中，针对不同的非默认搜索空间集，其对应的定时时长可以不同。例如，设定非默认搜索空间集1对应的定时时长为第一时长，非默认搜索空间集2对应的定时时长为第二时长，且第一时长与第二时长不等。可以理解的是，针对不同的非默认搜索空间集，其对应的定时时长可以相等。
在本发明实施例中，第二DCI可以为调度DCI，也可以为其他类型的DCI。
下面对本发明上述实施例中提供的搜索空间集切换方法进行举例说明。
设定基站配置了2个搜索空间集，分别为默认搜索空间集以及非默认搜索空间集1。目标指示域对应的比特取值为0时，指示用户设备使用默认搜索空间集；目标指示域对应的比特取值为1时，指示用户设备使用非默认搜索空间集1。基站配置目标指示域对应的比特取值为1，并向用户设备下发调度DCI。
用户设备在接收到调度DCI后，从中获取到目标指示域，读取到目标指示域对应比特的取值为1，即可从默认搜索空间集切换至非默认搜索空间集1。
设定基站配置了3个搜索空间集，分别为默认搜索空间集、非默认搜索空间集1以及非默认搜索空间集2。目标指示域对应的比特域取值为0时，指示用户设备使用非默认搜索空间集1；目标指示域对应的比特域取值为1时，指示用户设备使用非默认搜索空间集2。基站配置目标指示域对应的比特取值为0，并向用户设备下发调度DCI，调度DCI包括非默认搜索空间集1对应的定时时长1。
用户设备在进行非连续接收后使用默认搜索空间集进行PDCCH监听。在接收到基站下发的调度DCI之后，可以从中获取目标指示域的取值。用户设备检测到目标指示域的取值为0，则从默认搜索空间集切换至非默认搜索空间集1。用户设备检测到使用非默认搜索空 间集1的时长达到定时时长1时，从非默认搜索空间集1切换至默认搜索空间集。
在具体实施中，步骤S401～步骤S402与步骤S201对应，其中，步骤S201为从基站侧描述本申请提供的搜索空间集切换方法，步骤S401～步骤S402为从用户设备侧描述本申请提供的搜索空间集切换方法。
参照图5，给出了本发明实施例中的一种搜索空间集切换装置50，包括：第一下发单元501以及第二下发单元502，其中：
第一下发单元501，用于向用户设备下发第一下行控制信息，所述第一下行控制信息用于指示进入激活时间后使用的非默认搜索空间集；
第二下发单元502，用于向所述用户设备下发触发信令，所述触发信令用于触发所述用户设备在所述非默认搜索空间集与默认搜索空间集之间切换。
在具体实施中，第一下发单元501以及第二下发单元502的具体执行流程可以对应参照上述实施例中提供的步骤S101～步骤S102，本发明实施例不做赘述。
在具体实施中，上述的搜索空间集切换装置50可以对应于基站设备中具有数据处理功能的芯片；或者对应于基站设备中包括具有数据处理功能芯片的芯片模组，或者对应于基站设备。
参照图6，给出了本发明实施例中的另一种搜索空间集切换装置60，包括：第二下发单元601，其中：
第三下发单元601，用于向用户设备下发第二下行控制信息，所述第二下行控制信息包括目标指示域，所述目标指示域用于指示触发所述用户设备在非默认搜索空间集与默认搜索空间集之间切换。
在具体实施中，第二下发单元601的具体执行流程可以对应参照 上述实施例中提供的步骤S201，本发明实施例不做赘述。
在具体实施中，上述的搜索空间集切换装置60可以对应于基站设备中具有数据处理功能的芯片；或者对应于基站设备中包括具有数据处理功能芯片的芯片模组，或者对应于基站设备。
参照图7，给出了本发明实施例中的一种搜索空间集切换装置70，包括：第一接收单元701以及第二接收单元702，其中：
第一接收单元701，用于接收第一下行控制信息，从所述第一下行控制信息中获取进入激活时间后使用的非默认搜索空间集；
第二接收单元702，用于接收触发信令，根据所述触发信令在所述非默认搜索空间集与所述默认搜索空间集之间进行切换。
在具体实施中，第一接收单元701以及第二接收单元702的具体执行流程可以对应参照上述实施例中提供的步骤S301～步骤S302，本发明实施例不做赘述。
在具体实施中，上述的搜索空间集切换装置70可以对应于用户设备中具有数据处理功能的芯片，如基带芯片；或者对应于用户设备中包括具有数据处理功能芯片的芯片模组，或者对应于用户设备。
参照图8，给出了本发明实施例中的另一种搜索空间集切换装置80，包括：第三接收单元801以及获取单元802，其中：
第三接收单元801，用于接收第二下行控制信息；
获取单元802，用于从所述第二下行控制信息中获取目标指示域，所述目标指示域用于指示触发在非默认搜索空间集与默认搜索空间集之间切换。
在具体实施中，第三接收单元801以及获取单元802的具体执行流程可以对应参照上述实施例中提供的步骤S401～步骤S402，本发明实施例不做赘述。
在具体实施中，上述的搜索空间集切换装置80可以对应于用户 设备中具有数据处理功能的芯片，如基带芯片；或者对应于用户设备中包括具有数据处理功能芯片的芯片模组，或者对应于用户设备。
在具体实施中，关于上述实施例中描述的各个装置、产品包含的各个模块/单元，其可以是软件模块/单元，也可以是硬件模块/单元，或者也可以部分是软件模块/单元，部分是硬件模块/单元。
例如，对于应用于或集成于芯片的各个装置、产品，其包含的各个模块/单元可以都采用电路等硬件的方式实现，或者，至少部分模块/单元可以采用软件程序的方式实现，该软件程序运行于芯片内部集成的处理器，剩余的(如果有)部分模块/单元可以采用电路等硬件方式实现；对于应用于或集成于芯片模组的各个装置、产品，其包含的各个模块/单元可以都采用电路等硬件的方式实现，不同的模块/单元可以位于芯片模组的同一组件(例如芯片、电路模块等)或者不同组件中，或者，至少部分模块/单元可以采用软件程序的方式实现，该软件程序运行于芯片模组内部集成的处理器，剩余的(如果有)部分模块/单元可以采用电路等硬件方式实现；对于应用于或集成于终端的各个装置、产品，其包含的各个模块/单元可以都采用电路等硬件的方式实现，不同的模块/单元可以位于终端内同一组件(例如，芯片、电路模块等)或者不同组件中，或者，至少部分模块/单元可以采用软件程序的方式实现，该软件程序运行于终端内部集成的处理器，剩余的(如果有)部分模块/单元可以采用电路等硬件方式实现。
本发明实施例还提供了一种计算机可读存储介质，所述计算机可读存储介质为非易失性存储介质或非瞬态存储介质，其上存储有计算机程序，所述计算机程序被处理器运行时执行上述任一实施例提供的搜索空间集切换方法的步骤。
本发明实施例还提供了另一种搜索空间集切换装置，包括存储器和处理器，所述存储器上存储有可在所述处理器上运行的计算机程序，所述处理器运行所述计算机程序时执行上述任一种由基站侧执行的搜索空间集切换方法的步骤。
本发明实施例还提供了另一种搜索空间集切换装置，包括存储器和处理器，所述存储器上存储有可在所述处理器上运行的计算机程序，所述处理器运行所述计算机程序时执行上述任一种由用户设备侧执行的搜索空间集切换方法的步骤。
本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步骤是可以通过程序来指示相关的硬件来完成，该程序可以存储于一计算机可读存储介质中，存储介质可以包括：ROM、RAM、磁盘或光盘等。
虽然本发明披露如上，但本发明并非限定于此。任何本领域技术人员，在不脱离本发明的精神和范围内，均可作各种更动与修改，因此本发明的保护范围应当以权利要求所限定的范围为准。

Claims (33)

  1. 一种搜索空间集切换方法，其特征在于，包括：
    向用户设备下发第一下行控制信息，所述第一下行控制信息用于指示进入激活时间后使用的非默认搜索空间集；
    向所述用户设备下发触发信令，所述触发信令用于触发所述用户设备在所述非默认搜索空间集与默认搜索空间集之间切换。
  2. 如权利要求1所述的搜索空间集切换方法，其特征在于，所述第一下行控制信息包括目标指示域，所述目标指示域用于指示所述非默认搜索空间集的标识信息。
  3. 如权利要求2所述的搜索空间集切换方法，其特征在于，所述目标指示域与如下至少一个域并列：唤醒指示域、辅小区休眠指示域。
  4. 如权利要求2所述的搜索空间集切换方法，其特征在于，所述目标指示域位于辅小区休眠指示域中。
  5. 如权利要求1所述的搜索空间集切换方法，其特征在于，所述向所述用户设备下发触发信令，包括：
    向所述用户设备下发第二下行控制信息，所述第二下行控制信息用于触发切换至所述非默认搜索空间集。
  6. 如权利要求5所述的搜索空间集切换方法，其特征在于，在向所述用户设备下发第二下行控制信息之前，还包括：
    向所述用户设备下发配置的定时时长，使得所述用户设备在切换至所述非默认搜索空间集后，检测到使用的所述非默认搜索空间集的时长达到所述定时时长时，切换至所述默认搜索空间集。
  7. 一种搜索空间集切换方法，其特征在于，包括：
    向用户设备下发第二下行控制信息，所述第二下行控制信息包括目标指示域，所述目标指示域用于指示触发所述用户设备在非默认搜索空 间集与默认搜索空间集之间切换。
  8. 如权利要求7所述的搜索空间集切换方法，其特征在于，所述第二下行控制信息的长度为1比特。
  9. 如权利要求8所述的搜索空间集切换方法，其特征在于，在向用户设备下发第二下行控制信息之前，还包括：
    向所述用户设备下发配置的定时时长，使得所述用户设备在切换至所述非默认搜索空间集后，检测到使用的所述非默认搜索空间集的时长达到所述定时时长时，切换至所述默认搜索空间集。
  10. 如权利要求9所述的搜索空间集切换方法，其特征在于，所述目标指示域的取值用于指示使用所述非默认搜索空间集或所述默认搜索空间集。
  11. 如权利要求9所述的搜索空间集切换方法，其特征在于，所述目标指示域的取值用于指示所述非默认搜索空间集的标识信息，且所述目标指示域的不同取值对应不同的非默认搜索空间集的标识信息。
  12. 如权利要求11所述的搜索空间集切换方法，其特征在于，所述定时时长与所述非默认搜索空间集一一对应。
  13. 一种搜索空间集切换方法，其特征在于，包括：
    接收第一下行控制信息，从所述第一下行控制信息中获取进入激活时间后使用的非默认搜索空间集；
    接收触发信令，根据所述触发信令在所述非默认搜索空间集与所述默认搜索空间集之间进行切换。
  14. 如权利要求13所述的搜索空间集切换方法，其特征在于，所述第一下行控制信息包括目标指示域，所述目标指示域用于指示所述非默认搜索空间集的标识信息。
  15. 如权利要求14所述的搜索空间集切换方法，其特征在于，所述目标指示域与如下至少一个域并列：唤醒指示域、辅小区休眠指示域。
  16. 如权利要求14所述的搜索空间集切换方法，其特征在于，所述目标指示域位于辅小区休眠指示域中。
  17. 如权利要求13所述的搜索空间集切换方法，其特征在于，所述接收触发信令，包括：
    接收第二下行控制信息，从所述第二下行控制信息中获取所述触发信令；所述第二下行控制信息用于调度所述非默认搜索空间集。
  18. 如权利要求17所述的搜索空间集切换方法，其特征在于，在接收所述第二下行控制信息之前，还包括：
    从所述第二下行控制信息中获取定时时长。
  19. 如权利要求18所述的搜索空间集切换方法，其特征在于，所述根据所述触发信令在所述非默认搜索空间集与所述默认搜索空间集之间进行切换，包括：
    在切换至在切换至所述非默认搜索空间集后，检测到使用所述非默认搜索空间集的时长达到所述定时时长时，切换至所述默认搜索空间集。
  20. 一种搜索空间集切换方法，其特征在于，包括：
    接收第二下行控制信息；
    从所述第二下行控制信息中获取目标指示域，所述目标指示域用于指示触发在非默认搜索空间集与默认搜索空间集之间切换。
  21. 如权利要求20所述的搜索空间集切换方法，其特征在于，所述第二下行控制信息的长度为1比特。
  22. 如权利要求21所述的搜索空间集切换方法，其特征在于，在接收所述第二下行控制信息之前，还包括：
    从所述第二下行控制信息中获取定时时长。
  23. 如权利要求22所述的搜索空间集切换方法，其特征在于，在从所 述第二下行控制信息中获取目标指示域之后，还包括：
    在切换至所述非默认搜索空间集后，检测到使用所述非默认搜索空间集的时长达到所述定时时长时，切换至所述默认搜索空间集。
  24. 如权利要求23所述的搜索空间集切换方法，其特征在于，所述定时时长与所述非默认搜索空间集一一对应。
  25. 如权利要求21所述的搜索空间集切换方法，其特征在于，所述目标指示域的取值用于指示使用所述非默认搜索空间集或所述默认搜索空间集。
  26. 如权利要求21所述的搜索空间集切换方法，其特征在于，所述目标指示域的取值用于指示所述非默认搜索空间集的标识信息，且所述目标指示域的不同取值对应不同的非默认搜索空间集的标识信息。
  27. 一种搜索空间集切换装置，其特征在于，包括：
    第一下发单元，用于向用户设备下发第一下行控制信息，所述第一下行控制信息用于指示进入激活时间后使用的非默认搜索空间集；
    第二下发单元，用于向所述用户设备下发触发信令，所述触发信令用于触发所述用户设备在所述非默认搜索空间集与默认搜索空间集之间切换。
  28. 一种搜索空间集切换装置，其特征在于，包括：
    第三下发单元，用于向用户设备下发第二下行控制信息，所述第二下行控制信息包括目标指示域，所述目标指示域用于指示触发所述用户设备在非默认搜索空间集与默认搜索空间集之间切换。
  29. 一种搜索空间集切换装置，其特征在于，包括：
    第一接收单元，用于接收第一下行控制信息，从所述第一下行控制信息中获取进入激活时间后使用的非默认搜索空间集；
    第二接收单元，用于接收触发信令，根据所述触发信令在所述非默认 搜索空间集与所述默认搜索空间集之间进行切换。
  30. 一种搜索空间集切换装置，其特征在于，包括：
    第三接收单元，用于接收第二下行控制信息；
    获取单元，用于从所述第二下行控制信息中获取目标指示域，所述目标指示域用于指示触发在非默认搜索空间集与默认搜索空间集之间切换。
  31. 一种计算机可读存储介质，所述计算机可读存储介质为非易失性存储介质或非瞬态存储介质，其上存储有计算机程序，其特征在于，所述计算机程序被处理器运行时执行权利要求1～26任一项所述的搜索空间集切换方法的步骤。
  32. 一种搜索空间集切换装置，包括存储器和处理器，所述存储器上存储有可在所述处理器上运行的计算机程序，其特征在于，所述处理器运行所述计算机程序时执行权利要求1～12任一项所述的搜索空间集切换方法的步骤。
  33. 一种搜索空间集切换装置，包括存储器和处理器，所述存储器上存储有可在所述处理器上运行的计算机程序，其特征在于，所述处理器运行所述计算机程序时执行权利要求13～26任一项所述的搜索空间集切换方法的步骤。
PCT/CN2021/133532 2020-12-25 2021-11-26 搜索空间集切换方法及装置、可读存储介质 WO2022135029A1 (zh)

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