WO2022127490A1 - 搜索空间集组切换方法及装置、存储介质、用户设备、基站 - Google Patents

搜索空间集组切换方法及装置、存储介质、用户设备、基站 Download PDF

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Publication number
WO2022127490A1
WO2022127490A1 PCT/CN2021/131131 CN2021131131W WO2022127490A1 WO 2022127490 A1 WO2022127490 A1 WO 2022127490A1 CN 2021131131 W CN2021131131 W CN 2021131131W WO 2022127490 A1 WO2022127490 A1 WO 2022127490A1
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Prior art keywords
search space
space set
set group
user equipment
dci
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PCT/CN2021/131131
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English (en)
French (fr)
Inventor
邓云
赵思聪
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展讯通信（上海）有限公司
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Publication of WO2022127490A1 publication Critical patent/WO2022127490A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0009—Control or signalling for completing the hand-off for a plurality of users or terminals, e.g. group communication or moving wireless networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • 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
    • 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
    • H04L5/0096—Indication of changes in allocation
    • H04L5/0098—Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]

Definitions

  • the present invention relates to the field of communication technologies, and in particular, to a search space set group switching method and device, a storage medium, a user equipment, and a base station.
  • a base station can configure one or more Control Resource Sets (Control Resource Sets) of a User Equipment (User Equipment, UE) on an activated bandwidth (Bandwidth Part, BWP) of a serving cell , CORESET) detects its own downlink control signaling (Downlink Control Information, DCI) according to its own wireless network temporary identifier (Radio Network Temporary Identifier, RNTI).
  • DCI Downlink Control Information
  • RNTI Radio Network Temporary Identifier
  • a serving cell can be configured with one or more BWPs, and BWPs can be active or inactive. The UE does not need to detect DCI on an inactive BWP.
  • the UE may be configured with one serving cell, or may be configured with multiple serving cells.
  • one or more control resource sets (Control Resource Sets, CORESETs) may be configured according to the BWP, and one or more search space sets (search space sets) may be configured on each CORESET.
  • the network may configure the number of times, aggregation level, DCI format, etc., of the UE to detect DCI in each search space set, as well as the timing of detecting DCI, and the like. The number of times the UE performs different DCI blind checks is closely related to the power consumption of the UE. Therefore, in the New Radio (NR) system, switching the search space set group (Search space set group) of the UE is considered to achieve the purpose of power saving.
  • NR New Radio
  • the network needs to instruct the switching of each search space set through signaling.
  • the network instructs the switching of the search space set through signaling, and the signaling overhead is relatively large. .
  • the technical problem solved by the present invention is how to reduce the signaling overhead when switching between search space sets and groups.
  • an embodiment of the present invention provides a method for switching a search space set group.
  • the method for switching a search space set group includes: in the current DRX cycle, it is determined that the user equipment needs to switch the search space set group; In the activated BWP, the identifier of the search space set to be switched is determined in all the search space sets corresponding to the length type of the current DRX cycle, wherein the number of search space sets corresponding to the length type of each DRX cycle is One or more; carry the identifier of the search space set group to be switched in the DCI and send it to the user equipment.
  • the method further includes: configuring a corresponding search space set group for the length type of each DRX cycle configured by the user equipment.
  • the determining that the user equipment needs to switch the search space set group includes: determining that the user equipment needs to switch the search space set group according to changes in scheduling requirements of the user equipment.
  • the carrying the identifier of the search space set group to be switched in the DCI and sending it to the user equipment includes: carrying the identifier of the search space set group to be switched in a dedicated dedicated device in the DCI. Indicate the bit and send it out.
  • the detection times of the multiple search space sets in each time slot or each span are different.
  • the embodiment of the present invention also discloses another method for switching a search space set group, which is used for user equipment, where the user equipment is configured with DRX, and the method includes: receiving DCI from a base station; The identifier of the search space set group to be switched carried in the DCI determines the search space set group to be switched, wherein the base station in the active BWP of the user equipment, in all search space sets corresponding to the length type of the current DRX cycle The identifier of the search space set to be switched is determined in the group, and the number of search space sets corresponding to the length type of each DRX cycle is one or more; DCI is detected in the search space set after switching.
  • the receiving the DCI from the base station includes: in the current DRX cycle, using a default search space set group in the search space set group corresponding to the length type of the current DRX cycle to detect the DCI.
  • the embodiment of the present invention also discloses a search space set switching device for a base station, comprising: a switching determination module, used for determining that the user equipment needs to switch the search space set within the current DRX cycle; an identification determination module, used for In the activated BWP of the user equipment, the identifier of the search space set group to be switched is determined in all the search space set groups corresponding to the length type of the current DRX cycle, wherein the search space set group corresponding to the length type of each DRX cycle is searched
  • the number of space sets is one or more; the sending module is configured to carry the identifier of the search space set to be switched in the DCI and send it to the user equipment.
  • the embodiment of the present invention also discloses another search space set group switching device, which is used for user equipment, the user equipment is configured with DRX, and characterized in that, the method includes: a receiving module, configured to receive DCI from a base station a search space set group determination module, configured to determine a search space set group to be switched according to the identification of the search space set group to be switched carried in the DCI, wherein the base station is in the activated BWP of the user equipment, Determine the identifier of the search space set to be switched among all the search space sets corresponding to the length type of the current DRX cycle, and the number of search space sets corresponding to the length type of each DRX cycle is one or more; the detection module, For detecting DCI in the search space group after switching, the embodiment of the present invention further discloses a storage medium, on which a computer program is stored, and the computer program is executed by a processor to execute the method for switching the search space group step.
  • An embodiment of the present invention further discloses a base station, including a memory and a processor, the memory stores a computer program that can be run on the processor, and the processor executes the search space when the computer program runs. The steps of the set switch method.
  • An embodiment of the present invention further discloses a user equipment, including a memory and a processor, the memory stores a computer program that can be run on the processor, and the processor executes the search when the computer program runs Steps of the space set group switching method.
  • the base station pre-configures the user equipment with a search space set group corresponding to the length type of each DRX cycle.
  • the base station can search all search space sets corresponding to the length type of the current DRX cycle.
  • the identification of the search space group to be switched is determined in the space group, thereby reducing the number of bits occupied by the identification of the search space group to be switched, thereby reducing the number of bits used to indicate the identification of the search space group in the DCI. bit, saving signaling overhead on the basis of reducing user power consumption.
  • FIG. 1 is a flowchart of a method for switching a search space set group according to an embodiment of the present invention
  • FIG. 2 is a flowchart of another method for switching a search space set group according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a specific application scenario of an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a search space set group switching device according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of another apparatus for switching a search space set group according to an embodiment of the present invention.
  • the network needs to indicate the switching of each search space group through signaling.
  • the network indicates the switching of the search space group through signaling Signaling overhead is large.
  • the base station pre-configures the user equipment with a search space set group corresponding to the length type of each DRX cycle.
  • the base station can search all search space sets corresponding to the length type of the current DRX cycle.
  • the identification of the search space group to be switched is determined in the space group, thereby reducing the number of bits occupied by the identification of the search space group to be switched, thereby reducing the number of bits used to indicate the identification of the search space group in the DCI. bit, saving signaling overhead on the basis of reducing user power consumption.
  • the technical solution of the present invention can be applied to 5G (5 Generation) communication systems, 4G and 3G communication systems, and various new communication systems in the future, such as 6G and 7G.
  • the technical solution of the present invention is also applicable to different network architectures, including but not limited to relay network architecture, dual link architecture, Vehicle-to-Everything (vehicle-to-anything communication) architecture and other architectures.
  • FIG. 1 is a flowchart of a search space set switching method according to an embodiment of the present invention.
  • the search space set group switching method in the embodiment of the present invention can be applied to the base station side, that is, each step of the method shown in FIG. 1 can be executed by the base station.
  • the search space set switching method may include the following steps:
  • Step S101 in the current DRX cycle, determine that the user equipment needs to switch the search space set group;
  • Step S102 In the activated BWP of the user equipment, determine the identifier of the search space set group to be switched in all the search space set groups corresponding to the length type of the current DRX cycle, wherein the length type of each DRX cycle The number of corresponding search space sets is one or more;
  • Step S103 Carry the identifier of the search space set group to be switched in the DCI and send it to the user equipment.
  • the search space set switching method may be implemented in the form of a software program, and the software program runs in a processor integrated inside a chip or a chip module.
  • the method can also be implemented by combining software with hardware, which is not limited in this application.
  • the base station may determine that the user equipment needs to switch the search space set group. Specifically, the base station may determine that the user equipment needs to switch the search space set group according to the change of the scheduling requirement of the user equipment.
  • the network configures a long DRX cycle (Long DRX Cycle) and a short DRX cycle (Short DRX Cycle) for the UE.
  • the UE usually has scheduling requirements in the first few DRX short cycles, and the scheduling requirements in the subsequent DRX short cycles are not strong.
  • the base station may determine that the UE needs to switch the search space set group, and after several short DRX cycles, instruct the UE to switch to the search space set group with fewer detection times.
  • the number of detections refers to the number of times that the UE detects the DCI on the physical downlink control channel, also known as the number of blind detections (PDCCH Detection, or Blind Detection).
  • Span The number of DCIs to be detected.
  • a span can be 7 OFDM symbols in length, or a smaller time length.
  • the duration of the span may also be any other implementable duration, which is not limited in this embodiment of the present invention.
  • step S101 shown in FIG. 1 the following steps may be included: configuring a corresponding search space set group for the length type of each DRX cycle configured by the user equipment.
  • the length type of the current DRX cycle indicates the relative length of the current DRX cycle and other DRX cycles in all DRX cycles.
  • the lengths of all DRX cycles configured by the network for the UE are different.
  • the network configures two types of DRX cycle lengths for the UE, DRX long cycle (Long DRX) and DRX short cycle (Short DRX).
  • the cycle length of the DRX long cycle is longer than that of the DRX short cycle.
  • the UE may determine that the cycle length of the DRX short cycle is shorter among all DRX cycles configured by the UE.
  • the base station may configure a corresponding search space set group for each length type of the DRX cycle.
  • the UE corresponds to multiple sets of search space sets (with different detection times) in the short DRX cycle, and corresponds to one or more sets of search space sets in the long DRX cycle.
  • the base station may, according to the BWP activated by the UE, determine the search space set to be switched and its identifier among all the search space sets corresponding to the length type of the current DRX cycle.
  • the identifier of the search space set may be an index of the search space set to point to the search space set.
  • each length type of DRX cycle has a corresponding search space set group
  • the base station instructs the UE to switch the search space set.
  • space grouping it is also necessary to select a search space grouping group from the search space grouping group corresponding to the DRX cycle of this type.
  • the number of detections of the search space set to be switched is less than the number of detections of the search space set currently used by the UE. That is to say, the base station instructs the UE to switch to a search space set group with fewer detection times, so as to achieve the purpose of saving power of the UE. Once the UE has scheduling requirements, the base station can make the UE switch to the search space set group with more detection times through DCI again.
  • the indices of the two sets of search space sets may be 0 and 1 respectively; correspondingly, if the search space corresponding to the DRX short cycle is There are four sets of sets, and the indexes of the two sets of search space sets can be 0, 1, 2, and 3, respectively.
  • the base station determines that the UE does not need to switch the search space set, it does not indicate the identifier of the search space set to be switched or the index of the currently used search space set in the DCI.
  • the base station may carry the identifier of the search space set to be switched in the DCI and send it to the UE.
  • the base station pre-configures the search space set group corresponding to the length type of each DRX cycle for the user equipment according to the BWP.
  • the base station can configure the search space set group according to the length type of the current DRX cycle
  • the identification of the search space group to be switched is determined in all search space groups, thereby reducing the number of bits occupied by the identification of the search space group to be switched, thereby reducing the number of bits used to indicate the search space group in the DCI.
  • the bits of the identification save signaling overhead on the basis of reducing user power consumption.
  • step S103 shown in FIG. 1 may include the following steps: carrying the identifier of the search space set to be switched in a dedicated indication bit in the DCI, and sending it out.
  • the UE is configured with four sets of search space sets, and if the base station instructs the UE to switch the search space sets through dedicated indication bits, the identification of the search space sets needs to occupy two bits.
  • the base station since the base station configures search space sets for each type of DRX cycle according to the BWP, and each type of DRX cycle corresponds to two sets of search space sets, the base station is instructing the UE to switch the search space When grouping, the identification of the search space grouping only needs to occupy a single bit.
  • the network can effectively reduce the bits indicating the search space sets in the DCI.
  • the method for switching search space sets shown in FIG. 2 can be applied to the user equipment side, that is, the user equipment can execute each step of the method shown in FIG. 2 .
  • the user equipment is configured with DRX.
  • the search space set switching method may specifically include the following steps:
  • Step S201 receive the DCI from the base station
  • Step S202 Determine the search space set group to be switched according to the identifier of the search space set group to be switched carried in the DCI, wherein the base station in the active BWP of the user equipment, the length type of each DRX cycle The number of corresponding search space sets is one or more;
  • Step S203 Detect DCI in the switched search space set group.
  • the UE establishes a connection with the base station, configures DRX, and receives DCI within the activation time in the current DRX cycle.
  • the base station carries the identifier of the search space set group that needs to be handed over by the UE in the DCI. Therefore, in the specific implementation of step S202, the UE may obtain the identifier of the search space set to be switched from the DCI, so as to determine the search space set to be switched.
  • the number of DCI blind checks of the search space set with index 0 is 30 times
  • the number of DCI blind checks corresponding to the search space set with index 1 is 16 times.
  • the UE obtains the index 1 by parsing from the DCI, and can determine that the search space set to be switched is the search space set with 16 blind detection times.
  • step S203 the UE detects DCI in the search space set group after the handover.
  • step S201 shown in FIG. 2 may include the following steps: detecting the DCI by default in the search space set group corresponding to the length type of the current DRX cycle.
  • the UE first uses the default search space set to detect DCI, and then obtains the identifier of the search space set to be switched from the DCI.
  • the default search space set group may be the search space set group with fewer detection times in the search space set group corresponding to the length type of the current DRX cycle, and the default search space set group may also be the search space set group corresponding to the length type of the current DRX cycle
  • the search space set group with more detection times is not limited in this embodiment of the present invention.
  • the base station configures the number and index of search space sets corresponding to the DRX short cycle through RRC signaling, for example, the base station configures the number of search space sets corresponding to the DRX short cycle through RRC signaling
  • the base station may configure a search space set group corresponding to the DRX short period according to each BWP of the serving cell.
  • the base station may instruct the UE to switch search space set groups through DCI. For example, there may be a bit in the DCI dedicated to indicating whether the search space set with index 0 or 1 is used.
  • the base station decides whether to switch the search space set group according to the scheduling requirement of the UE. For example, if the scheduling requirement of the UE becomes stronger, and the UE is currently using a search space set with fewer detections, the base station instructs the UE to switch to the search space set with more detections.
  • the UE When the UE is configured with multiple serving cells, the UE detects the physical downlink control channel on the search space set group detected on the activated BWP of each serving cell, and detects its own DCI.
  • the search space set group indicated by the DCI application there can be the following implementation solutions:
  • the UE When the UE receives the DCI for switching the search space set group on any serving cell, the UE implements the search space set group handover on all serving cells. At this time, it is required that the values of the search space set group identifiers on all serving cells are the same. , so that the identities of the switched search space sets indicated by the DCIs on different serving cells are all valid;
  • the UE receives the DCI for switching the search space set group on one serving cell, and the UE switches the search space set group only in the serving cell, that is, the DCI only controls the switching of the search space set group on a single serving cell, considering the existence of cross-carrier Scheduling, that is, a serving cell can schedule transmission resources on another serving cell across carriers. If the DCI of the switched search space set group is also scheduled across carriers, after the UE receives the DCI, it will be dispatched on the scheduled serving cell. Apply the switched search space set group. If cross-carrier scheduling is not applied, after receiving the DCI for switching the search space set on a serving cell, the UE applies the switched search space set on the serving cell.
  • the UE first uses the default search space set group to detect DCI, and after detecting the DCI, learns whether there is an index of the search space set group in the DCI, if so, it means that the search space set group needs to be switched, and switch to the index Pointed to the search space set for DCI detection.
  • the default search space set may be any search space set configured by the network in the current DRX cycle, for example, may be the search space set with the smallest identification number.
  • the UE In the DRX long cycle, if there is only one set of search space sets corresponding to the DRX long cycle, the UE does not need an independent bit in the DCI to indicate the search space set during the DRX long cycle; if the DRX long cycle corresponds to multiple sets of searches If the space set group is selected, the DCI detected by the UE in the DRX long period needs to have an independent bit to indicate the applied search space set group.
  • the network can effectively reduce the bits indicating the search space sets in the DCI when instructing to switch the search space sets, thereby reducing signaling overhead .
  • FIG. 3 shows a flowchart of the interaction between the base station and the UE.
  • step S31 the base station 31 configures multiple types of DRX cycles for the UE 32, and a search space set group corresponding to the length type of each DRX cycle.
  • step S32 the base station 31 determines that the UE 32 needs to switch the search space set group within the current DRX cycle.
  • step S33 in the BWP activated by the UE32, the identifier of the search space set group to be switched is determined among all the search space set groups corresponding to the length type of the current DRX cycle.
  • step S34 the identifier of the search space set to be switched is carried in the DCI and sent to the UE32.
  • step S35 the UE32 determines the search space set to be switched according to the identifier of the search space set to be switched carried in the DCI, and detects the DCI in the switched search space set.
  • the UE32 has completed the switching of the search space set group.
  • an embodiment of the present invention further discloses a search space set-group switching device 40 , and the search space set-group switching device 40 may include:
  • the handover determination module 401 is used to determine that the user equipment needs to switch the search space set group within the current DRX cycle;
  • An identifier determining module 402 configured to determine, in the activated BWP of the user equipment, the identifier of the search space set group to be switched in all search space set groups corresponding to the length type of the current DRX cycle, wherein each DRX The number of search space sets corresponding to the length type of the period is one or more;
  • the sending module 403 is configured to carry the identifier of the search space set to be switched in the DCI and send it to the user equipment.
  • the above-mentioned search space group switching apparatus may correspond to a chip with a search space group switching function in a network device (such as a base station), such as SOC (System-On-a-Chip, system on chip), baseband chip, etc. ; or corresponds to a chip module with a search space set switching function included in the network device; or corresponds to a chip module with a data processing function chip, or corresponds to a network device.
  • a network device such as a base station
  • SOC System-On-a-Chip, system on chip
  • baseband chip baseband chip
  • an embodiment of the present invention further discloses a search space group switching apparatus 40 , and the search space group switching apparatus 50 may include:
  • a receiving module 501 configured to receive DCI from a base station
  • a search space set group determination module 502 configured to determine the search space set group to be switched according to the identifier of the search space set group to be switched carried in the DCI, wherein the base station is in the activated BWP of the user equipment, Determine the identifier of the search space set to be switched in all the search space sets corresponding to the length type of the current DRX cycle, and the number of search space sets corresponding to the length type of each DRX cycle is one or more;
  • the detection module 503 is configured to detect DCI in the switched search space set group.
  • the base station preconfigures the user equipment with a search space set group corresponding to the length type of each DRX cycle.
  • the base station can search all search space sets corresponding to the length type of the current DRX cycle.
  • the identification of the search space group to be switched is determined in the space group, thereby reducing the number of bits occupied by the identification of the search space group to be switched, thereby reducing the number of bits used to indicate the identification of the search space group in the DCI. bit, saving signaling overhead on the basis of reducing user power consumption.
  • the above-mentioned search space set group switching apparatus may correspond to a chip with a search space set group switching function in the user equipment (or called terminal equipment), such as SOC (System-On-a-Chip, system on chip), A baseband chip, etc.; or corresponding to a chip module with a search space group switching function included in the user equipment; or a chip module with a data processing function chip, or corresponding to a user equipment.
  • SOC System-On-a-Chip, system on chip
  • a baseband chip etc.
  • chip module with a search space group switching function included in the user equipment or a chip module with a data processing function chip, or corresponding to a user equipment.
  • each module/unit included in each device and product described in the above-mentioned embodiments it may be a software module/unit, a hardware module/unit, or a part of a software module/unit and a part of 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.
  • 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.
  • the embodiment of the present invention also discloses a storage medium, the storage medium is a computer-readable storage medium, and a computer program is stored thereon, and the computer program can execute the steps of the method shown in FIG. 1-FIG. 3 when running.
  • the storage medium may include ROM, RAM, magnetic or optical disks, and the like.
  • the storage medium may also include a non-volatile memory (non-volatile) or a non-transitory (non-transitory) memory and the like.
  • the embodiment of the present invention further discloses a user equipment, the user equipment may include a memory and a processor, and the memory stores a computer program that can run on the processor.
  • the processor may perform the steps of the method shown in FIG. 2 when running the computer program.
  • the user equipment includes but is not limited to terminal equipment such as mobile phones, computers, and tablet computers.
  • An embodiment of the present invention further discloses a base station, where the base station may include a memory and a processor, and the memory stores a computer program that can run on the processor.
  • the processor may perform the steps of the method shown in FIG. 2 when running the computer program.
  • the user equipment includes but is not limited to terminal equipment such as mobile phones, computers, and tablet computers.
  • a base station (base station, BS for short) in the embodiments of the present application which may also be referred to as base station equipment, is a device deployed in a radio access network (RAN) to provide a wireless communication function.
  • the equipment that provides base station functions in 2G networks includes base transceiver stations (English: base transceiver station, referred to as BTS), the equipment that provides base station functions in 3G networks includes NodeB (NodeB), and the equipment that provides base station functions in 4G networks.
  • eNB evolved NodeB
  • WLAN wireless local area networks
  • the device that provides base station functions is access point (access point, referred to as AP), 5G New Radio (New Radio) , referred to as NR) in the device gNB that provides base station functions, and the node B (ng-eNB) that continues to evolve, wherein the gNB and the terminal use NR technology for communication, and the ng-eNB and the terminal use E-UTRA (Evolved Universal Terrestrial Radio Access) technology to communicate, both gNB and ng-eNB can be connected to the 5G core network.
  • the base station in the embodiment of the present application also includes a device that provides a base station function in a new communication system in the future, and the like.
  • the base station controller in this embodiment of the present application is a device for managing base stations, such as a base station controller (BSC) in a 2G network and a radio network controller (RNC) in a 3G network. ), and may also refer to a device for controlling and managing base stations in a new communication system in the future.
  • BSC base station controller
  • RNC radio network controller
  • the network side network in the embodiment of the present invention refers to a communication network that provides communication services for terminals, including a base station of a wireless access network, a base station controller of a wireless access network, and a device on the core network side.
  • the terminal in this embodiment of the present application may refer to various forms of user equipment (user equipment, UE for short), access terminal, subscriber unit, subscriber station, mobile station, mobile station (mobile station, built as MS), remote station, remote station A terminal, mobile device, user terminal, terminal equipment, wireless communication device, user agent or user equipment.
  • user equipment user equipment, UE for short
  • access terminal subscriber unit, subscriber station, mobile station, mobile station (mobile station, built as MS), remote station, remote station
  • subscriber unit subscriber station
  • mobile station mobile station (mobile station, built as MS)
  • remote station remote station
  • remote station remote station
  • remote station remote station
  • mobile device mobile device
  • user terminal terminal equipment
  • terminal equipment wireless communication device
  • user agent or user equipment user agent
  • the terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), Handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices with wireless communication capabilities, terminal devices in future 5G networks or future evolved public land mobile communication networks (Public Land Mobile Network, referred to for short) PLMN), which is not limited in this embodiment of the present application.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • connection in the embodiments of the present application refers to various connection modes such as direct connection or indirect connection, so as to realize communication between devices, which is not limited in the embodiments of the present application.
  • the processor may be a central processing unit (central processing unit, CPU for short), and the processor may also be other general-purpose processors, digital signal processors (digital signal processor, DSP for short) , application specific integrated circuit (ASIC), off-the-shelf programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be read-only memory (ROM for short), programmable read-only memory (PROM for short), erasable programmable read-only memory (EPROM for short) , Electrically Erasable Programmable Read-Only Memory (electrically EPROM, EEPROM for short) or flash memory.
  • Volatile memory may be random access memory (RAM), which acts as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous Dynamic random access memory
  • SDRAM synchronous Dynamic random access memory
  • DDR SDRAM double data rate synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM Synchronous connection dynamic random access memory
  • DR RAM direct memory bus random access memory
  • the above embodiments may be implemented in whole or in part by software, hardware, firmware or any other combination.
  • the above-described embodiments may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated.
  • the computer may be a general purpose computer, special purpose computer, computer network, or other programmable device.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server, or data center Transmission by wire or wireless to another website site, computer, server or data center.
  • the computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, a data center, or the like that contains one or more sets of available media.
  • the usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVDs), or semiconductor media.
  • the semiconductor medium may be a solid state drive.
  • the disclosed method, apparatus and system may be implemented in other manners.
  • the device embodiments described above are only illustrative; for example, the division of the units is only a logical function division, and there may be other division methods in actual implementation; for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may be physically included individually, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit may be implemented in the form of hardware, or may be implemented in the form of hardware plus software functional units.
  • the above-mentioned integrated units implemented in the form of software functional units can be stored in a computer-readable storage medium.
  • the above-mentioned software functional unit is stored in a storage medium, and includes several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute some steps of the methods described in the various embodiments of the present invention.
  • the aforementioned storage medium includes: U disk, mobile hard disk, Read-Only Memory (ROM for short), Random Access Memory (RAM for short), magnetic disk or CD, etc. that can store program codes medium.

Abstract

一种搜索空间集组切换方法及装置、存储介质、用户设备、基站，搜索空间集组切换方法包括：在当前DRX周期内，确定用户设备需要切换搜索空间集组；在所述用户设备的激活BWP内，在所述当前DRX周期的长度类型对应的所有搜索空间集组中确定要切换的搜索空间集组的标识，其中，每一DRX周期的长度类型对应的搜索空间集组的数量为一个或多个；将所述要切换的搜索空间集组的标识携带在DCI中发送给所述用户设备。本发明技术方案能够减小搜索空间集组切换时的信令开销。

Description

搜索空间集组切换方法及装置、存储介质、用户设备、基站
本申请要求2020年12月14日提交中国专利局、申请号为202011467582.6、发明名称为“搜索空间集组切换方法及装置、存储介质、用户设备、基站”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
本发明涉及通信技术领域，尤其涉及一种搜索空间集组切换方法及装置、存储介质、用户设备、基站。
背景技术
在新无线接入(New Radio，NR)系统中，基站可以配置用户设备(User Equipment，UE)在服务小区的激活带宽(Bandwidth Part，BWP)上的一个或者多个控制资源集(Control Resource Set，CORESET)根据自己的无线网络临时标识(Radio Network Temporary Identifier，RNTI)检测属于自己的下行控制信令(Downlink Control Information，DCI)。例如，对于不考虑载波聚合的场景，UE工作在一个载波上即一个服务小区上，基站可以配置UE检测该载波中激活BWP上上的一个或者多个CORESET中的搜索空间，UE根据自己的RNTI检测属于自己的DCI，然后根据DCI接收数据或者上传数据。一个服务小区可以配置一个或多个BWP，BWP可以是激活或非激活的。UE不需要检测非激活BWP上的DCI。
UE可以配置一个服务小区，也可以配置多个服务小区。对于每个服务小区，可以按照BWP分别配置一个或多个控制资源集(Control Resource Set，CORESET)，在每个CORESET上可以配置一个或多个搜索空间集(search space set)。网络可以配置UE在每个搜索空间集检测DCI的次数、汇聚等级、DCI格式等，以及检测DCI 的时机等。UE执行不同的DCI盲检次数与UE的功耗密切相关，因此新无线(New Radio，NR)系统中考虑切换UE的搜索空间集组(Search space set group)来达到省电的目的。
但是，现有技术中需要网络通过信令指示每次搜索空间集组的切换，在搜索空间集组的数量较多的情况下，网络通过信令指示切换搜索空间集组的信令开销较大。
发明内容
本发明解决的技术问题是如何减小搜索空间集组切换时的信令开销。
为解决上述技术问题，本发明实施例提供一种搜索空间集组切换方法，搜索空间集组切换方法包括：在当前DRX周期内，确定用户设备需要切换搜索空间集组；在所述用户设备的激活BWP内，在所述当前DRX周期的长度类型对应的所有搜索空间集组中确定要切换的搜索空间集组的标识，其中，每一DRX周期的长度类型对应的搜索空间集组的数量为一个或多个；将所述要切换的搜索空间集组的标识携带在DCI中发送给所述用户设备。
可选的，所述确定用户设备需要切换搜索空间集组之前还包括：对所述用户设备所配置的每一DRX周期的长度类型配置对应的搜索空间集组。
可选的，所述确定用户设备需要切换搜索空间集组包括：根据所述用户设备的调度需求变化确定所述用户设备需要切换搜索空间集组。
可选的，所述将所述要切换的搜索空间集组的标识携带在DCI中发送给所述用户设备包括：将所述要切换的搜索空间集组的标识承载在所述DCI中的专用指示比特，并发送出去。
可选的，DRX周期的长度类型对应的搜索空间集组的数量为多个时，多个搜索空间集组在每个时隙或每个跨度内的检测次数不同。
为解决上述技术问题，本发明实施例还公开了另一种搜索空间集组切换方法，用于用户设备，所述用户设备配置有DRX，所述方法包括：接收来自基站的DCI；根据所述DCI中携带的要切换的搜索空间集组的标识确定要切换的搜索空间集组，其中，所述基站在所述用户设备的激活BWP内，在当前DRX周期的长度类型对应的所有搜索空间集组中确定要切换的搜索空间集组的标识，每一DRX周期的长度类型对应的搜索空间集组的数量为一个或多个；在切换后的搜索空间集组检测DCI。
可选的，所述接收来自基站的DCI包括：在所述当前DRX周期内，采用所述当前DRX周期的长度类型对应的搜索空间集组中默认搜索空间集组检测所述DCI。
本发明实施例还公开了一种搜索空间集组切换装置，用于基站，包括：切换确定模块，用于在当前DRX周期内，确定用户设备需要切换搜索空间集组；标识确定模块，用于在所述用户设备的激活BWP内，在所述当前DRX周期的长度类型对应的所有搜索空间集组中确定要切换的搜索空间集组的标识，其中，每一DRX周期的长度类型对应的搜索空间集组的数量为一个或多个；发送模块，用于将所述要切换的搜索空间集组的标识携带在DCI中发送给所述用户设备。
本发明实施例还公开了另一种搜索空间集组切换装置，用于用户设备，所述用户设备配置有DRX，其特征在于，所述方法包括：接收模块，用于，接收来自基站的DCI；搜索空间集组确定模块，用于根据所述DCI中携带的要切换的搜索空间集组的标识确定要切换的搜索空间集组，其中，所述基站在所述用户设备的激活BWP内，在当前DRX周期的长度类型对应的所有搜索空间集组中确定要切换的搜索空间集组的标识，每一DRX周期的长度类型对应的搜索空间集组的数量为一个或多个；检测模块，用于在切换后的搜索空间集组检测DCI本发明实施例还公开了一种存储介质，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所述搜索空间集组切换方法 的步骤。
本发明实施例还公开了一种基站，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所述搜索空间集组切换方法的步骤。
本发明实施例还公开了一种用户设备，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所述搜索空间集组切换方法的步骤。
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：
本发明技术方案中，基站预先为用户设备配置每一DRX周期的长度类型对应的搜索空间集组，在用户设备需要切换搜索空间集组时，基站可以根据当前DRX周期的长度类型对应的所有搜索空间集组中确定要切换的搜索空间集组的标识，从而减小了要切换的搜索空间集组的标识占用的比特位数，进而减小了DCI中用于指示搜索空间集组的标识的比特位，在减小用户功耗的基础上节省信令开销。
附图说明
图1是本发明实施例一种搜索空间集组切换方法的流程图；
图2是本发明实施例另一种搜索空间集组切换方法的流程图；
图3是本发明实施例一种具体应用场景的示意图；
图4是本发明实施例一种搜索空间集组切换装置的结构示意图；
图5是本发明实施例另一种搜索空间集组切换装置的结构示意图。
具体实施方式
如背景技术中所述，现有技术中需要网络通过信令指示每次搜索空间集组的切换，在搜索空间集组的数量较多的情况下，网络通过信令指示切换搜索空间集组的信令开销较大。
本发明技术方案中，基站预先为用户设备配置每一DRX周期的长度类型对应的搜索空间集组，在用户设备需要切换搜索空间集组时，基站可以根据当前DRX周期的长度类型对应的所有搜索空间集组中确定要切换的搜索空间集组的标识，从而减小了要切换的搜索空间集组的标识占用的比特位数，进而减小了DCI中用于指示搜索空间集组的标识的比特位，在减小用户功耗的基础上节省信令开销。
本方明技术方案可适用于5G(5 Generation)通信系统，还可适用于4G、3G通信系统，还可适用于未来新的各种通信系统，例如6G、7G等。
本方明技术方案也适用于不同的网络架构，包括但不限于中继网络架构、双链接架构、Vehicle-to-Everything(车辆到任何物体的通信)架构等架构。
为使本发明的上述目的、特征和优点能够更为明显易懂，下面结合附图对本发明的具体实施例做详细的说明。
图1是本发明实施例一种搜索空间集组切换方法的流程图。
本发明实施例的搜索空间集组切换方法可以用于基站侧，也即可以由基站执行图1所示方法的各个步骤。
具体地，所述搜索空间集组切换方法可以包括以下步骤：
步骤S101：在当前DRX周期内，确定用户设备需要切换搜索空间集组；
步骤S102：在所述用户设备的激活BWP内，在所述当前DRX周期的长度类型对应的所有搜索空间集组中确定要切换的搜索空间集组的标识，其中，每一DRX周期的长度类型对应的搜索空间集组的数量为一个或多个；
步骤S103：将所述要切换的搜索空间集组的标识携带在DCI中发送给所述用户设备。
需要指出的是，本实施例中各个步骤的序号并不代表对各个步骤的执行顺序的限定。
可以理解的是，在具体实施中，所述搜索空间集组切换方法可以采用软件程序的方式实现，该软件程序运行于芯片或芯片模组内部集成的处理器中。该方法也可以采用软件结合硬件的方式实现，本申请不作限制。
在步骤S101的具体实施中，基站可以确定用户设备需要切换搜索空间集组。具体地，基站可以根据所述用户设备的调度需求变化确定所述用户设备需要切换搜索空间集组。
例如，网络为UE配置了DRX长周期(Long DRX Cycle)和DRX短周期(Short DRX Cycle)。UE通常在最初的数个DRX短周期有调度需求，后面的DRX短周期的调度需求不强。在这种情况下，基站可以确定UE需要切换搜索空间集组，并在数个DRX短周期之后，指示UE切换至检测次数较少的搜索空间集组。检测次数是指UE检测物理下行控制信道上的DCI的检测次数，也称为盲检次数(PDCCH Detection，或者Blind Detection)，检测次数可以是一个时隙内需要检测的DCI次数，也可以是一个跨度(Span)需要检测的DCI次数。一个跨度可以是7个OFDM符号长度，或者是更小的时间长度。
当然，所述跨度的时长也可以是其他任意可实施的时间长度，本发明实施例对此不作限制。
在一个非限制性的实施例中，在图1所示步骤S101之前可以包括以下步骤：对所述用户设备所配置的每一DRX周期的长度类型配置对应的搜索空间集组。
本实施例中，所述当前DRX周期的长度类型表示当前DRX周期与所有DRX周期中其他DRX周期的相对长度。其中，网络为UE配置的所有DRX周期的长度不同。例如，网络为UE配置了两种DRX周期的长度类型，DRX长周期(Long DRX)和DRX短周期(Short  DRX)。DRX长周期的周期长度比DRX短周期的周期长度要长。当UE确定当前DRX周期的长度类型为DRX短周期时，UE可以确定DRX短周期的周期长度在UE配置的所有DRX周期中是较短的。
本实施例中，基站可以为每一DRX周期的长度类型分别配置对应的搜索空间集组。例如，UE在DRX短周期对应多套搜索空间集组(检测次数不同)，DRX长周期对应一套或多套搜索空间集组。
在步骤S102的具体实施中，基站可以按照UE激活的BWP，在当前DRX周期的长度类型对应的所有搜索空间集组中确定要切换的搜索空间集组及其标识。搜索空间集组的标识可以是搜索空间集组的索引(index)，用以指向该搜索空间集组。
由于每一长度类型的DRX周期具有对应的搜索空间集组，UE在该类型的DRX周期进行DCI检测时，使用的是该类型的DRX周期对应的搜索空间集组；因此基站在指示UE切换搜索空间集组时，也需要在该类型的DRX周期对应的搜索空间集组中选取搜索空间集组。
具体而言，为了更好的省电，要切换的搜索空间集组的检测次数少于UE当前使用的搜索空间集组的检测次数。也就是说，基站通过指示UE切换至检测次数更少的搜索空间集组，来实现UE省电的目的。一旦UE有调度需求，基站可以再次通过DCI使UE切换到检测次数多的搜索空间集组。
例如，在一个激活BWP中，如果DRX短周期对应的搜索空间集组有两套，则该两套搜索空间集组的索引可以分别是0和1；相应地，如果DRX短周期对应的搜索空间集组有四套，则该两套搜索空间集组的索引可以分别是0、1、2和3。
需要说明的是，如果基站确定UE不需要切换搜索空间集组，则不在DCI中指示要切换的搜索空间集组的标识，或者指示当前所用的搜索空间集组的索引。
进而步骤S103的具体实施中，基站可以将所述要切换的搜索空间集组的标识携带在DCI中发送给UE。
本发明实施例中，基站预先为用户设备按照BWP配置每一DRX周期的长度类型对应的搜索空间集组，在用户设备需要切换搜索空间集组时，基站可以根据当前DRX周期的长度类型对应的所有搜索空间集组中确定要切换的搜索空间集组的标识，从而减小了要切换的搜索空间集组的标识占用的比特位数，进而减小了DCI中用于指示搜索空间集组的标识的比特位，在减小用户功耗的基础上节省信令开销。
在本发明一个非限制性的实施例中，图1所示步骤S103可以包括以下步骤：将所述要切换的搜索空间集组的标识承载在所述DCI中的专用指示比特，并发送出去。
本实施例中，DCI中可以有一个比特专用于指示搜索空间集组的标识，也即专用指示比特。
现有技术中，UE配置了四套搜索空间集组，如果基站通过专用指示比特向UE指示切换搜索空间集组，搜索空间集组的标识需要占用两个比特。而在本发明实施例中，由于基站按照BWP分别为每一类型的DRX周期配置了搜索空间集组，每一类型的DRX周期对应两套搜索空间集组，因此基站在向UE指示切换搜索空间集组时，搜索空间集组的标识仅需要占用单个比特。
本发明实施例中，网络通过配置不同DRX周期对应的搜索空间集组，可以有效减少DCI中指示搜索空间集组的比特位。
请参照图2，图2所示的搜索空间集组切换方法可以用于用户设备侧，也即可以由用户设备执行图2所示方法的各个步骤。用户设备配置了DRX。
所述搜索空间集组切换方法具体可以包括以下步骤：
步骤S201：接收来自基站的DCI；
步骤S202：根据所述DCI中携带的要切换的搜索空间集组的标识确定要切换的搜索空间集组，其中，所述基站在所述用户设备的激活BWP内，每一DRX周期的长度类型对应的搜索空间集组的数量为一个或多个；
步骤S203：在切换后的搜索空间集组检测DCI。
本实施例中，UE与基站建立连接，配置了DRX，并在当前DRX周期内的激活时间内接收DCI。
基站在DCI中携带需要UE切换的搜索空间集组的标识。故而在步骤S202的具体实施中，UE可以从DCI中获取要切换的搜索空间集组的标识，从而确定要切换的搜索空间集组。
例如，索引为0的搜索空间集组的DCI盲检次数为30次，索引为1的搜索空间集组对应的DCI盲检次数为16次。UE从DCI中解析获得索引1，则可以确定要切换的搜索空间集组为盲检次数为16次的搜索空间集组。
进而在步骤S203的具体实施中，UE在切换后的搜索空间集组检测DCI。
在一个非限制性的实施例中，图2所示步骤S201可以包括以下步骤：在当前DRX周期的长度类型对应的搜索空间集组中默认搜索空间集组检测所述DCI。
本实施例中，UE是先采用默认搜索空间集组来检测DCI，再从DCI中获得要切换的搜索空间集组的标识。默认搜索空间集组可以是当前DRX周期的长度类型对应的搜索空间集组中检测次数较少的搜索空间集组，默认搜索空间集组也可以是当前DRX周期的长度类型对应的搜索空间集组中检测次数较多的搜索空间集组，本发明实施例对此不作限制。
在本发明一个具体实施例中，基站通过RRC信令配置DRX短周期对应的搜索空间集组的数量以及索引(index)，例如基站通过RRC 信令配置DRX短周期对应的搜索空间集组的数量为两套，index分别是0和1，基站可以按照服务小区的每个BWP分别配置DRX短周期对应的搜索空间集组。在DRX短周期中，基站可以通过DCI指示UE切换搜索空间集组。比如DCI中可以有一个比特专用于指示采用index 0还是1的搜索空间集组。具体地，基站根据UE的调度需求来决定是否切换搜索空间集组。例如，UE的调度需求变强，并且UE当前使用的是检测次数较少的搜索空间集组，则基站指示UE切换至检测次数较多的搜索空间集组。
当UE配置了多个服务小区，UE在每个服务小区的激活BWP上检测的搜索空间集组上的物理下行控制信道，检测属于自己的DCI。对于DCI指示应用的搜索空间集组，可以有如下的实现方案：
UE在任何一个服务小区上收到切换搜索空间集组的DCI，UE在所有的服务小区上均实施搜索空间集组的切换，此时要求所有服务小区上搜索空间集组的标识取值是一致的，这样不同服务小区上的DCI指示的切换后的搜索空间集组的标识均是有效的；
或者，UE在一个服务小区上收到切换搜索空间集组的DCI，UE仅在该服务小区切换搜索空间集组，即DCI仅控制单个服务小区上搜索空间集组的切换，考虑到存在跨载波调度，即一个服务小区可以跨载波调度另一个服务小区上的传输资源，如果切换搜索空间集组的DCI同时也是跨载波调度的，此时UE收到该DCI之后，在被调度的服务小区上应用切换后的搜索空间集组。如果没有应用跨载波调度，UE在一个服务小区上收到切换搜索空间集组的DCI之后，就在该服务小区应用切换后的搜索空间集组。
具体实施中，UE先采用默认搜索空间集组检测DCI，在检测到DCI后，获知DCI中是否有搜索空间集组的索引，如果有，则表示需要切换搜索空间集组，并切换至该索引指向的搜索空间集组进行DCI的检测。默认搜索空间集组可以是当前DRX周期中网络所配置的任何一个搜索空间集组，如可以是标识号最小的搜索空间集组。
在DRX长周期中，如果仅有一套DRX长周期对应的搜索空间集组，则UE在DRX长周期时，DCI中不需要有独立的比特指示搜索空间集组；如果DRX长周期对应多套搜索空间集组，则UE在DRX长周期时检测的DCI中需要有独立的比特指示应用的搜索空间集组。
本发明实施例中，网络通过配置不同DRX周期的长度类型对应的搜索空间集组，可以在指示切换搜索空间集组时，有效减少DCI中指示搜索空间集组的比特位，从而减少信令开销。
请参照图3，图3示出了基站与UE交互的流程图。
在步骤S31中，基站31为UE32配置多种类型的DRX周期，以及每一DRX周期的长度类型对应的搜索空间集组。
在步骤S32中，基站31在当前DRX周期内，确定UE32需要切换搜索空间集组。
在步骤S33中，在UE32激活的BWP中，在当前DRX周期的长度类型对应的所有搜索空间集组中确定要切换的搜索空间集组的标识。
在步骤S34中，将要切换的搜索空间集组的标识携带在DCI中发送给UE32。
在步骤S35中，UE32根据DCI中携带的要切换的搜索空间集组的标识确定要切换的搜索空间集组，并在切换后的搜索空间集组检测DCI。
至此，UE32完成了搜索空间集组的切换。
请参照图4，本发明实施例还公开了一种搜索空间集组切换装置40，搜索空间集组切换装置40可以包括：
切换确定模块401，用于在当前DRX周期内，确定用户设备需要切换搜索空间集组；
标识确定模块402，用于在所述用户设备的激活BWP内，在所述当前DRX周期的长度类型对应的所有搜索空间集组中确定要切换的搜索空间集组的标识，其中，每一DRX周期的长度类型对应的搜索空间集组的数量为一个或多个；
发送模块403，用于将所述要切换的搜索空间集组的标识携带在DCI中发送给所述用户设备。
关于所述搜索空间集组切换装置40的工作原理、工作方式的更多内容，可以参照图1至图3中的相关描述，这里不再赘述。
在具体实施中，上述搜索空间集组切换装置可以对应于网络设备(如基站)中具有搜索空间集组切换功能的芯片，例如SOC(System-On-a-Chip，片上系统)、基带芯片等；或者对应于网络设备中包括具有搜索空间集组切换功能的芯片模组；或者对应于具有数据处理功能芯片的芯片模组，或者对应于网络设备。
请参照图5，本发明实施例还公开了一种搜索空间集组切换装置40，搜索空间集组切换装置50可以包括：
接收模块501，用于接收来自基站的DCI；
搜索空间集组确定模块502，用于根据所述DCI中携带的要切换的搜索空间集组的标识确定要切换的搜索空间集组，其中，所述基站在所述用户设备的激活BWP内，在当前DRX周期的长度类型对应的所有搜索空间集组中确定要切换的搜索空间集组的标识，每一DRX周期的长度类型对应的搜索空间集组的数量为一个或多个；
检测模块503，用于在切换后的搜索空间集组检测DCI。
本发明实施例中，基站预先为用户设备配置每一DRX周期的长度类型对应的搜索空间集组，在用户设备需要切换搜索空间集组时，基站可以根据当前DRX周期的长度类型对应的所有搜索空间集组中确定要切换的搜索空间集组的标识，从而减小了要切换的搜索空间集组的标识占用的比特位数，进而减小了DCI中用于指示搜索空间集 组的标识的比特位，在减小用户功耗的基础上节省信令开销。
在具体实施中，上述搜索空间集组切换装置可以对应于用户设备(或者称为终端设备)中具有搜索空间集组切换功能的芯片，例如SOC(System-On-a-Chip，片上系统)、基带芯片等；或者对应于用户设备中包括具有搜索空间集组切换功能的芯片模组；或者对应于具有数据处理功能芯片的芯片模组，或者对应于用户设备。
关于所述搜索空间集组切换装置50的工作原理、工作方式的更多内容，可以参照图1至图3中的相关描述，这里不再赘述。
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。
本发明实施例还公开了一种存储介质，所述存储介质为计算机可读存储介质，其上存储有计算机程序，所述计算机程序运行时可以执 行图1-图3中所示方法的步骤。所述存储介质可以包括ROM、RAM、磁盘或光盘等。所述存储介质还可以包括非挥发性存储器(non-volatile)或者非瞬态(non-transitory)存储器等。
本发明实施例还公开了一种用户设备，所述用户设备可以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可以执行图2中所示方法的步骤。所述用户设备包括但不限于手机、计算机、平板电脑等终端设备。
本发明实施例还公开了一种基站，所述基站可以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可以执行图2中所示方法的步骤。所述用户设备包括但不限于手机、计算机、平板电脑等终端设备。
本申请实施例中的基站(base station，简称BS)，也可称为基站设备，是一种部署在无线接入网(RAN)用以提供无线通信功能的装置。例如在2G网络中提供基站功能的设备包括基地无线收发站(英文：base transceiver station,简称BTS)，3G网络中提供基站功能的设备包括节点B(NodeB)，在4G网络中提供基站功能的设备包括演进的节点B(evolved NodeB，eNB)，在无线局域网络(wireless local area networks，简称WLAN)中，提供基站功能的设备为接入点(access point，简称AP)，5G新无线(New Radio，简称NR)中的提供基站功能的设备gNB,以及继续演进的节点B(ng-eNB),其中gNB和终端之间采用NR技术进行通信，ng-eNB和终端之间采用E-UTRA(Evolved Universal Terrestrial Radio Access)技术进行通信，gNB和ng-eNB均可连接到5G核心网。本申请实施例中的基站还包含在未来新的通信系统中提供基站功能的设备等。
本申请实施例中的基站控制器，是一种管理基站的装置，例如2G网络中的基站控制器(base station controller，简称BSC)、3G网络中的无线网络控制器(radio network controller，简称RNC)、还可 指未来新的通信系统中控制管理基站的装置。
本发明实施例中的网络侧network是指为终端提供通信服务的通信网络，包含无线接入网的基站，还可以包含无线接入网的基站控制器，还可以包含核心网侧的设备。
本申请实施例中的终端可以指各种形式的用户设备(user equipment，简称UE)、接入终端、用户单元、用户站、移动站、移动台(mobile station，建成MS)、远方站、远程终端、移动设备、用户终端、终端设备(terminal equipment)、无线通信设备、用户代理或用户装置。终端设备还可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，简称SIP)电话、无线本地环路(Wireless Local Loop，简称WLL)站、个人数字处理(Personal Digital Assistant，简称PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，未来5G网络中的终端设备或者未来演进的公用陆地移动通信网络(Public Land Mobile Network，简称PLMN)中的终端设备等，本申请实施例对此并不限定。
应理解，本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/“，表示前后关联对象是一种“或”的关系。
本申请实施例中出现的“多个”是指两个或两个以上。
本申请实施例中出现的第一、第二等描述，仅作示意与区分描述对象之用，没有次序之分，也不表示本申请实施例中对设备个数的特别限定，不能构成对本申请实施例的任何限制。
本申请实施例中出现的“连接”是指直接连接或者间接连接等各种连接方式，以实现设备间的通信，本申请实施例对此不做任何限定。
应理解，本申请实施例中，所述处理器可以为中央处理单元 (central processing unit，简称CPU)，该处理器还可以是其他通用处理器、数字信号处理器(digital signal processor，简称DSP)、专用集成电路(application specific integrated circuit，简称ASIC)、现成可编程门阵列(field programmable gate array，简称FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
还应理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，简称ROM)、可编程只读存储器(programmable ROM，简称PROM)、可擦除可编程只读存储器(erasable PROM，简称EPROM)、电可擦除可编程只读存储器(electrically EPROM，简称EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，简称RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的随机存取存储器(random access memory，简称RAM)可用，例如静态随机存取存储器(static RAM，简称SRAM)、动态随机存取存储器(DRAM)、同步动态随机存取存储器(synchronous DRAM，简称SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，简称DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，简称ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，简称SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，简称DR RAM)。
上述实施例，可以全部或部分地通过软件、硬件、固件或其他任意组合来实现。当使用软件实现时，上述实施例可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令或计算机程序。在计算机上加载或执行所述计算机指令或计算机程序时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以为通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质 中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线或无线方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集合的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质。半导体介质可以是固态硬盘。
在本申请所提供的几个实施例中，应该理解到，所揭露的方法、装置和系统，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的；例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式；例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理包括，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元，可以存储在一个计算机可读取存储介质中。上述软件功能单元存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本发明各个实施例所述方法的部分步骤。 而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，简称ROM)、随机存取存储器(Random Access Memory，简称RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
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 (13)

  1. 一种搜索空间集组切换方法，用于基站，其特征在于，所述方法包括：
    在当前DRX周期内，确定用户设备需要切换搜索空间集组；
    在所述用户设备的激活BWP内，在所述当前DRX周期的长度类型对应的所有搜索空间集组中确定要切换的搜索空间集组的标识，其中，每一DRX周期的长度类型对应的搜索空间集组的数量为一个或多个；
    将所述要切换的搜索空间集组的标识携带在DCI中发送给所述用户设备。
  2. 根据权利要求1所述的搜索空间集组切换方法，其特征在于，所述确定用户设备需要切换搜索空间集组之前还包括：
    对所述用户设备所配置的每一DRX周期的长度类型配置对应的搜索空间集组。
  3. 根据权利要求1所述的搜索空间集组切换方法，其特征在于，所述确定用户设备需要切换搜索空间集组包括：
    根据所述用户设备的调度需求变化确定所述用户设备需要切换搜索空间集组。
  4. 根据权利要求1所述的搜索空间集组切换方法，其特征在于，所述将所述要切换的搜索空间集组的标识携带在DCI中发送给所述用户设备包括：
    将所述要切换的搜索空间集组的标识承载在所述DCI中的专用指示比特，并发送出去。
  5. 根据权利要求1所述的搜索空间集组切换方法，其特征在于，DRX周期的长度类型对应的搜索空间集组的数量为多个时，多个搜索 空间集组在每个时隙或每个跨度内的检测次数不同。
  6. 一种搜索空间集组切换方法，用于用户设备，所述用户设备配置有DRX，其特征在于，所述方法包括：
    接收来自基站的DCI；
    根据所述DCI中携带的要切换的搜索空间集组的标识确定要切换的搜索空间集组，其中，所述基站在所述用户设备的激活BWP内，在当前DRX周期的长度类型对应的所有搜索空间集组中确定要切换的搜索空间集组的标识，每一DRX周期的长度类型对应的搜索空间集组的数量为一个或多个；
    在切换后的搜索空间集组检测DCI。
  7. 根据权利要求6所述的搜索空间集组切换方法，其特征在于，所述接收来自基站的DCI包括：
    在所述当前DRX周期内，采用所述当前DRX周期的长度类型对应的搜索空间集组中默认搜索空间集组检测所述DCI。
  8. 根据权利要求6所述的搜索空间集组切换方法，其特征在于，所述在切换后的搜索空间集组检测DCI包括：
    如果在一个服务小区接收到指示切换搜索空间集组的DCI，则在所有服务小区的激活BWP中在切换后的搜索空间集组检测DCI；
    或者，如果在一个服务小区接收到指示切换搜索空间集组的DCI，则在所述服务小区的激活BWP中在切换后的搜索空间集组检测DCI。
  9. 一种搜索空间集组切换装置，用于基站，其特征在于，包括：
    切换确定模块，用于在当前DRX周期内，确定用户设备需要切换搜索空间集组；
    标识确定模块，用于在所述用户设备的激活BWP内，在所述当前 DRX周期的长度类型对应的所有搜索空间集组中确定要切换的搜索空间集组的标识，其中，每一DRX周期的长度类型对应的搜索空间集组的数量为一个或多个；
    发送模块，用于将所述要切换的搜索空间集组的标识携带在DCI中发送给所述用户设备。
  10. 一种搜索空间集组切换装置，用于用户设备，所述用户设备配置有DRX，其特征在于，所述装置包括：
    接收模块，用于，接收来自基站的DCI；
    搜索空间集组确定模块，用于根据所述DCI中携带的要切换的搜索空间集组的标识确定要切换的搜索空间集组，其中，所述基站在所述用户设备的激活BWP内，在当前DRX周期的长度类型对应的所有搜索空间集组中确定要切换的搜索空间集组的标识，每一DRX周期的长度类型对应的搜索空间集组的数量为一个或多个；
    检测模块，用于在切换后的搜索空间集组检测DCI。
  11. 一种存储介质，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至8中任一项所述搜索空间集组切换方法的步骤。
  12. 一种基站，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至5中任一项所述搜索空间集组切换方法的步骤。
  13. 一种用户设备，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6至8中任一项所述搜索空间集组切换方法的步骤。
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