CN114630377A - Search space set switching method and device, storage medium, user equipment and base station - Google Patents
Search space set switching method and device, storage medium, user equipment and base station Download PDFInfo
- Publication number
- CN114630377A CN114630377A CN202011467582.6A CN202011467582A CN114630377A CN 114630377 A CN114630377 A CN 114630377A CN 202011467582 A CN202011467582 A CN 202011467582A CN 114630377 A CN114630377 A CN 114630377A
- Authority
- CN
- China
- Prior art keywords
- search space
- space set
- set group
- dci
- user equipment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000001514 detection method Methods 0.000 claims description 24
- 238000004590 computer program Methods 0.000 claims description 22
- 230000008859 change Effects 0.000 claims description 3
- 230000011664 signaling Effects 0.000 abstract description 15
- 238000004891 communication Methods 0.000 description 14
- 230000006870 function Effects 0.000 description 10
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Images
Classifications
-
- 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]
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
A method and a device for switching search space set, a storage medium, user equipment and a base station are provided, wherein the method for switching search space set comprises the following steps: determining that the user equipment needs to switch a search space set group in the current DRX period; determining the identifier of a search space set group to be switched in all search space set groups corresponding to the length type of the current DRX period in the active BWP of the user equipment, wherein the number of the search space set groups corresponding to the length type of each DRX period is one or more; and carrying the identification of the search space set group to be switched in DCI and sending the DCI to the user equipment. The technical scheme of the invention can reduce the signaling overhead when the search space set is switched.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a search space set switching method and apparatus, a storage medium, a user equipment, and a base station.
Background
In a New Radio access (NR) system, a base station may configure one or more Control Resource sets (CORESET) of a User Equipment (UE) on a Bandwidth-limited Part (BWP) of a serving cell, and detect a Downlink Control Information (DCI) belonging to the base station according to a Radio Network Temporary Identifier (RNTI). For example, for a scenario without considering carrier aggregation, the UE operates on one carrier, i.e., one serving cell, the base station may configure the UE to detect a search space in one or more CORESET on BWP in the carrier, and the UE detects DCI belonging to the UE according to its RNTI, and then receives data or uploads data according to the DCI. One serving cell may configure one or more BWPs, which may be active or inactive. The UE does not need to detect DCI on inactive BWP.
The UE may configure one serving cell or may configure a plurality of serving cells. For each serving cell, one or more Control Resource sets (CORESET) may be configured separately according to 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 the UE detects DCI per search space set, the aggregation level, DCI format, etc., and the timing to detect DCI, etc. The number of times that the UE performs different DCI blind tests is closely related to the power consumption of the UE, so a Search space set group (Search space set group) for switching the UE is considered in a New Radio (NR) system to achieve the purpose of power saving.
However, in the prior art, the network needs to instruct the switching of the search space set group each time through signaling, and when the number of the search space set groups is large, the signaling overhead of the network for instructing the switching of the search space set group through signaling is large.
Disclosure of Invention
The technical problem solved by the invention is how to reduce the signaling overhead when the search space set is switched.
In order to solve the above technical problem, an embodiment of the present invention provides a search space set switching method, where the search space set switching method includes: determining that the user equipment needs to switch a search space set group in the current DRX period; determining the identifier of a search space set group to be switched in all search space set groups corresponding to the length type of the current DRX period in the active BWP of the user equipment, wherein the number of the search space set groups corresponding to the length type of each DRX period is one or more; and carrying the identification of the search space set group to be switched in DCI and sending the DCI to the user equipment.
Optionally, before determining that the user equipment needs to switch the search space set group, the method further includes: and configuring a corresponding search space set group for the length type of each DRX period configured by the user equipment.
Optionally, the determining that the user equipment needs to switch the search space set includes: and determining that the user equipment needs to switch the search space set group according to the scheduling requirement change of the user equipment.
Optionally, the sending, to the user equipment, the identifier of the search space set group to be switched carried in DCI includes: and carrying the identifier of the search space set group to be switched on a special indication bit in the DCI and sending out the special indication bit.
Optionally, when the number of search space set groups corresponding to the length type of the DRX cycle is multiple, the number of detections in each slot or each span of the multiple search space set groups is different.
In order to solve the above technical problem, an embodiment of the present invention further discloses another search space set switching method, used for a user equipment, where the user equipment is configured with DRX, and the method includes: receiving DCI from a base station; determining a search space set group to be switched according to an identifier of the search space set group to be switched carried in the DCI, wherein the base station determines 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 period in an active BWP of the user equipment, and the number of the search space set groups corresponding to the length type of each DRX period is one or more; DCI is detected at the switched search space set group.
Optionally, the receiving the DCI from the base station includes: and in the current DRX period, detecting the DCI by adopting a default search space set group in the search space set group corresponding to the length type of the current DRX period.
The embodiment of the invention also discloses a search space set switching device, which is used for a base station and comprises the following components: a switching determining module, configured to determine that the ue needs to switch the search space set in the current DRX cycle; an identifier determining module, configured to determine, in active BWP of the user equipment, an identifier of a search space set group to be switched among all search space set groups corresponding to the length type of the current DRX cycle, where the number of search space set groups corresponding to the length type of each DRX cycle is one or more; and a sending module, configured to carry the identifier of the search space set group to be switched in DCI and send the DCI to the user equipment.
The embodiment of the invention also discloses another search space set switching device which is used for user equipment, and the user equipment is configured with DRX, and the method is characterized by comprising the following steps: a receiving module, configured to receive DCI from a base station; a search space set group determining module, configured to determine a search space set group to be switched according to an identifier of the search space set group to be switched that is carried in the DCI, where the base station determines, in an active BWP of the user equipment, identifiers of the search space set group to be switched in all search space set groups corresponding to a length type of a current DRX cycle, and the number of the search space set groups corresponding to the length type of each DRX cycle is one or more; the embodiment of the invention also discloses a storage medium, wherein a computer program is stored on the storage medium, and the computer program executes the steps of the search space set group switching method when being executed by a processor.
The embodiment of the invention also discloses a base station, which comprises a memory and a processor, wherein the memory is stored with a computer program capable of running on the processor, and the processor executes the step of the search space set switching method when running the computer program.
The embodiment of the invention also discloses user equipment which comprises a memory and a processor, wherein the memory is stored with a computer program capable of running on the processor, and the processor executes the steps of the search space set switching method when running the computer program.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
in the technical scheme of the invention, the base station configures the search space set group corresponding to the length type of each DRX period for the user equipment in advance, and when the user equipment needs to switch the search space set group, the base station can 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 period, so that the bit number occupied by the identifier of the search space set group to be switched is reduced, the bit number used for indicating the identifier of the search space set group in DCI is reduced, and the signaling overhead is saved on the basis of reducing the power consumption of the user.
Drawings
Fig. 1 is a flowchart of a search space set switching method according to an embodiment of the present invention;
FIG. 2 is a flow chart of another search space set switching method according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating an exemplary application scenario of the present invention;
FIG. 4 is a schematic structural diagram of a search space set switching apparatus according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another search space set switching apparatus according to an embodiment of the present invention.
Detailed Description
As described in the background art, in the prior art, a network needs to instruct, through signaling, each time a search space set group is switched, and when the number of search space set groups is large, the network instructs, through signaling, to switch the search space set group, the signaling overhead is large.
In the technical scheme of the invention, the base station configures the search space set group corresponding to the length type of each DRX period for the user equipment in advance, and when the user equipment needs to switch the search space set group, the base station can 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 period, so that the bit number occupied by the identifier of the search space set group to be switched is reduced, the bit number used for indicating the identifier of the search space set group in DCI is reduced, and the signaling overhead is saved on the basis of reducing the power consumption of the user.
The technical scheme of the invention can be applied to 5G (5Generation) communication systems, 4G and 3G communication systems, and various future new communication systems 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-event architecture, and the like.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Fig. 1 is a flowchart of a search space set switching method according to an embodiment of the present invention.
The search space set switching method of the embodiment of the present invention may be used at the base station side, that is, the base station may perform each step of the method shown in fig. 1.
Specifically, the search space set switching method may include the following steps:
step S101: determining that the user equipment needs to switch a search space set group in the current DRX period;
step S102: determining the identifier of a search space set group to be switched in all search space set groups corresponding to the length type of the current DRX period in the active BWP of the user equipment, wherein the number of the search space set groups corresponding to the length type of each DRX period is one or more;
step S103: and carrying the identification of the search space set group to be switched in DCI and sending the DCI to the user equipment.
It should be noted that, the sequence numbers of the steps in this embodiment do not represent a limitation on the execution order of the steps.
In a specific implementation of step S101, 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 ue needs to switch the search space set group according to a scheduling requirement change of the ue.
For example, the network configures the UE with a Long DRX Cycle (Long DRX Cycle) and a Short DRX Cycle (Short DRX Cycle). The UE usually has scheduling requirements in the first several DRX short cycles, and the scheduling requirements in the following DRX short cycles are not strong. In this case, the base station may determine that the UE needs to switch the search space set group and instruct the UE to switch to the search space set group with a smaller number of detections after several DRX short cycles. The Detection times refer to the Detection times of detecting DCI on a physical downlink control channel by the UE, and are also referred to as Blind Detection times (PDCCH Detection or Blind Detection), where the Detection times may be the number of times of detecting DCI in a slot or the number of times of detecting DCI in a Span (Span). A span may be 7 OFDM symbols long, or a smaller time length.
Of course, the duration of the span may be any other practicable time length, and the embodiment of the present invention is not limited thereto.
In one non-limiting embodiment, the following steps may be included before step S101 shown in fig. 1: and configuring a corresponding search space set group for the length type of each DRX period configured by the user equipment.
In this embodiment, the length type of the current DRX cycle indicates a relative length between the current DRX cycle and other DRX cycles in all DRX cycles. Wherein, the lengths of all DRX periods configured by the network for the UE are different. For example, the network configures the UE with two DRX cycle length types, 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. When the UE determines that the length type of the current DRX cycle is the DRX short cycle, the UE may determine that the cycle length of the DRX short cycle is shorter in all DRX cycles configured by the UE.
In this embodiment, the base station may configure corresponding search space set groups for the length type of each DRX cycle. For example, the UE may correspond to multiple sets of search space sets (with different detection times) in the DRX short cycle, and the DRX long cycle may correspond to one or more sets of search space sets.
In a specific implementation of step S102, the base station may determine the search space set group to be handed over and its identity among all search space set groups corresponding to the length type of the current DRX cycle according to the BWP activated by the UE. The identification of the search space set group may be an index (index) of the search space set group to point to the search space set group.
Because each length type DRX period has a corresponding search space set group, when the UE carries out DCI detection on the type DRX period, the UE uses the search space set group corresponding to the type DRX period; therefore, when instructing the UE to switch the search space set, the base station also needs to select the search space set from the search space sets corresponding to the DRX cycle of the type.
Specifically, for better power saving, the number of detections of the search space set group to be switched is less than the number of detections of the search space set group currently used by the UE. That is, the base station implements the purpose of saving power for the UE by instructing the UE to switch to the search space set group with fewer detection times. Once the UE has a scheduling requirement, the base station may switch the UE to the search space set group with the large number of detections through the DCI again.
For example, in an active BWP, if there are two sets of search space set groups corresponding to the DRX short cycle, the indexes of the two sets of search space set groups may be 0 and 1, respectively; accordingly, if there are four sets of search space set groups corresponding to the DRX short cycle, the indexes of the two sets of search space set groups may be 0, 1, 2, and 3, respectively.
It should be noted that, if the base station determines that the UE does not need to switch the search space set group, the identity of the search space set group to be switched or the index of the currently used search space set group is not indicated in the DCI.
Further, in the specific implementation of step S103, the base station may send the UE with the identifier of the search space set group to be switched in DCI.
In the embodiment of the invention, the base station configures the search space set group corresponding to the length type of each DRX period for the user equipment in advance according to BWP, and when the user equipment needs to switch the search space set group, the base station can 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 period, so that the bit number occupied by the identifier of the search space set group to be switched is reduced, the bit for indicating the identifier of the search space set group in DCI is further reduced, and the signaling overhead is saved on the basis of reducing the power consumption of the user.
In one non-limiting embodiment of the present invention, step S103 shown in fig. 1 may include the following steps: and carrying the identifier of the search space set group to be switched on a special indication bit in the DCI and sending out the special indication bit.
In this embodiment, one bit in the DCI may be dedicated to the identifier indicating the search space set group, that is, a dedicated indication bit.
In the prior art, the UE configures four sets of search space set groups, and if the base station indicates to the UE to switch the search space set groups through the dedicated indication bit, the identifier of the search space set group needs to occupy two bits. In the embodiment of the present invention, since the base station configures the search space set for each type of DRX cycle according to BWP, and each type of DRX cycle corresponds to two sets of search space sets, when the base station indicates to the UE to switch the search space set, the identifier of the search space set only needs to occupy a single bit.
In the embodiment of the invention, the network can effectively reduce the bit indicating the search space set group in the DCI by configuring the search space set groups corresponding to different DRX cycles.
Referring to fig. 2, the search space set switching method shown in fig. 2 may be used at the user equipment side, that is, the user equipment may perform the steps 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: receiving DCI from a base station;
step S202: determining a search space set group to be switched according to an identifier of the search space set group to be switched carried in the DCI, wherein the number of the search space set groups corresponding to the length type of each DRX period of the base station in an active BWP of the user equipment is one or more;
step S203: DCI is detected at the switched search space set group.
In this embodiment, the UE establishes a connection with the base station, configures DRX, and receives DCI within an activation time in a current DRX cycle.
The base station carries the identity of the search space set group to which the UE needs to switch in the DCI. In the specific implementation of step S202, the UE may obtain the identifier of the search space set group to be switched from the DCI, so as to determine the search space set group to be switched.
For example, the search space set group with index 0 has DCI blind detection times of 30, and the search space set group with index 1 has DCI blind detection times of 16. The UE parses the DCI to obtain the index 1, and then may determine that the search space set group to be switched is the search space set group with 16 blind detections.
Further, in the specific implementation of step S203, the UE detects DCI in the search space set group after the handover.
In one non-limiting embodiment, step S201 shown in fig. 2 may include the following steps: and detecting the DCI in a default search space set group in a search space set group corresponding to the length type of the current DRX period.
In this embodiment, the UE detects DCI using a default search space set group, and then obtains an identifier of a search space set group to be switched from the DCI. The default search space set may be a search space set with a smaller number of detections in a search space set corresponding to the length type of the current DRX cycle, or the default search space set may be a search space set with a larger number of detections in a search space set corresponding to the length type of the current DRX cycle.
In an embodiment of the present invention, the base station configures, through RRC signaling, the number of search space set groups corresponding to the DRX short cycle and an index (index), for example, the base station configures, through RRC signaling, the number of search space set groups corresponding to the DRX short cycle into two sets, where the index is 0 and 1, respectively, and the base station may configure, according to each BWP of the serving cell, the search space set group corresponding to the DRX short cycle, respectively. In the DRX short cycle, the base station may instruct the UE to switch the search space set group through DCI. For example, one bit in DCI may be dedicated to a search space set group indicating whether index 0 or 1 is used. Specifically, the base station decides whether to switch the search space set group according to the scheduling requirement of the UE. For example, the scheduling requirement of the UE becomes strong, and the UE currently uses the search space set group with the smaller detection times, the base station instructs the UE to switch to the search space set group with the larger detection times.
When the UE configures a plurality of serving cells, the UE detects DCI belonging to the UE on a physical downlink control channel on a search space set group detected on an active BWP of each serving cell. For the search space set group to which the DCI indicates an application, the following implementation may be possible:
the UE receives DCI for switching the search space set group on any one service cell, the UE performs the switching of the search space set group on all the service cells, and at the moment, the identification values of the search space set group on all the service cells are required to be consistent, so that the identifications of the search space set group after switching, which are indicated by the DCI on different service cells, are all effective;
or, the UE receives the DCI for switching the search space set group in 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 in a single serving cell, and in consideration of cross-carrier scheduling, that is, one serving cell may schedule transmission resources in another serving cell in a cross-carrier manner, if the DCI for switching the search space set group is also cross-carrier scheduled, the UE applies the switched search space set group to the scheduled serving cell after receiving the DCI. If cross-carrier scheduling is not applied, after receiving the DCI for switching the search space set group in a serving cell, the UE applies the switched search space set group in the serving cell.
In specific implementation, the UE firstly detects DCI by using a default search space set group, and after detecting DCI, knows whether there is an index of the search space set group in the DCI, and if so, indicates that the search space set group needs to be switched, and switches to the search space set group pointed by the index to perform DCI detection. The default search space set group may be any search space set group configured by the network in the current DRX cycle, such as the search space set group with the smallest identification number.
In the DRX long period, if only one set of search space set group corresponding to the DRX long period exists, the UE does not need to have an independent bit in DCI to indicate the search space set group when the UE is in the DRX long period; if the DRX long cycle corresponds to multiple sets of search space set groups, the UE needs to have an independent bit in the DCI detected during the DRX long cycle to indicate the applied search space set group.
In the embodiment of the invention, the network configures the search space set groups corresponding to the length types of different DRX cycles, so that the bit indicating the search space set group in the DCI can be effectively reduced when the search space set group is indicated to be switched, thereby reducing the signaling overhead.
Referring to fig. 3, fig. 3 is a flowchart illustrating interaction between a base station and a UE.
In step S31, the base station 31 configures UE32 with multiple types of DRX cycles and search space set groups corresponding to length types of each DRX cycle.
In step S32, the base station 31 determines that the UE32 needs to switch the search space set group during the current DRX cycle.
In step S33, in BWP activated by the UE32, an identification of a search space set group to be handed over is determined among all search space set groups corresponding to the length type of the current DRX cycle.
In step S34, the identity of the search space set group to be switched is carried in DCI and transmitted to the UE 32.
In step S35, the UE32 determines a search space set group to be switched according to the identifier of the search space set group to be switched carried in the DCI, and detects the DCI in the switched search space set group.
To this end, the UE32 completes the switching of the search space set group.
Referring to fig. 4, an embodiment of the present invention further discloses a search space set switching device 40, where the search space set switching device 40 may include:
a handover determining module 401, configured to determine that the ue needs to handover the search space set in the current DRX cycle;
an identifier determining module 402, configured to determine, within active BWP of the user equipment, an identifier of a search space set group to be handed over from all search space set groups corresponding to the length type of the current DRX cycle, where the number of search space set groups corresponding to the length type of each DRX cycle is one or more;
a sending module 403, configured to carry the identifier of the search space set group to be switched in DCI and send the DCI to the user equipment.
For more details of the operation principle and the operation manner of the search space set switching device 40, reference may be made to the relevant descriptions in fig. 1 to fig. 3, which are not repeated herein.
Referring to fig. 5, an embodiment of the present invention further discloses a search space set switching device 40, where the search space set switching device 50 may include:
a receiving module 501, configured to receive DCI from a base station;
a search space set group determining module 502, configured to determine a search space set group to be switched according to an identifier of the search space set group to be switched, where the base station determines, in active BWP of the user equipment, identifiers of the search space set group to be switched in all search space set groups corresponding to a length type of a current DRX cycle, and the number of the search space set groups corresponding to the length type of each DRX cycle is one or more;
a detecting module 503, configured to detect DCI in the search space set group after the handover.
In the embodiment of the invention, the base station configures the search space set group corresponding to the length type of each DRX period for the user equipment in advance, when the user equipment needs to switch the search space set group, the base station can 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 period, thereby reducing the bit number occupied by the identifier of the search space set group to be switched, further reducing the bit for indicating the identifier of the search space set group in DCI, and saving signaling overhead on the basis of reducing the power consumption of the user.
For more details of the working principle and the working manner of the search space set switching device 50, reference may be made to the relevant descriptions in fig. 1 to fig. 3, which are not repeated herein.
The embodiment of the invention also discloses a storage medium, which is a computer-readable storage medium and stores a computer program thereon, and the computer program can execute the steps of the methods shown in fig. 1-3 when running. The storage medium may include ROM, RAM, magnetic or optical disks, etc. The storage medium may further include a non-volatile memory (non-volatile) or a non-transitory memory (non-transient), and the like.
The embodiment of the invention also discloses user equipment which can comprise a memory and a processor, wherein the memory is stored with a computer program which can run on the processor. The processor, when running the computer program, may perform the steps of the method shown in fig. 2. The user equipment includes but is not limited to a mobile phone, a computer, a tablet computer and other terminal equipment.
The embodiment of the invention also discloses a base station which can comprise a memory and a processor, wherein the memory is stored with a computer program which can run on the processor. The processor, when running the computer program, may perform the steps of the method shown in fig. 2. The user equipment includes but is not limited to a mobile phone, a computer, a tablet computer and other terminal equipment.
A Base Station (BS) in the embodiment of the present application, which may also be referred to as a base station device, is a device deployed in a Radio Access Network (RAN) to provide a wireless communication function. For example, a device providing a base station function in a 2G network includes a Base Transceiver Station (BTS), a device providing a base station function in a 3G network includes a node b (nodeb), apparatuses for providing a base station function in a 4G network include evolved node bs (enbs), which, in a Wireless Local Area Network (WLAN), the devices providing the base station function are an Access Point (AP), a device gNB providing the base station function in a New Radio (NR) of 5G, and a node B (ng-eNB) continuing to evolve, the gNB and the terminal communicate with each other by adopting an NR (NR) technology, the ng-eNB and the terminal communicate with each other by adopting an E-UTRA (evolved Universal Terrestrial Radio Access) technology, and both the gNB and the ng-eNB can be connected to a 5G core network. The base station in the embodiment of the present application also includes a device and the like that provide a function of the base station in a future new communication system.
The base station controller in the embodiment of the present application is a device for managing a base station, for example, a Base Station Controller (BSC) in a 2G network, a Radio Network Controller (RNC) in a 3G network, or a device for controlling and managing a base station in a future new communication system.
The network on the network side in the embodiment of the present invention refers to a communication network providing communication services for a terminal, and includes a base station of a radio access network, a base station controller of the radio access network, and a device on the core network side.
A terminal in this embodiment may refer to various forms of User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station (mobile station, MS), a remote station, a remote terminal, a mobile device, a user terminal, a terminal device (terminal equipment), a wireless communication device, a user agent, or a user equipment. 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), a handheld device with a Wireless communication function, a computing device or other processing devices connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G Network or a terminal device in a future evolved Public Land Mobile Network (PLMN), and the like, which is not limited in this embodiment.
It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this document indicates that the former and latter related objects are in an "or" relationship.
The "plurality" appearing in the embodiments of the present application means two or more.
The descriptions of the first, second, etc. appearing in the embodiments of the present application are only for illustrating and differentiating the objects, and do not represent the order or the particular limitation of the number of the devices in the embodiments of the present application, and do not constitute any limitation to the embodiments of the present application.
The term "connect" in the embodiments of the present application refers to various connection manners, such as direct connection or indirect connection, to implement communication between devices, which is not limited in this embodiment of the present application.
It should be understood that, in the embodiment of the present application, the processor may be a Central Processing Unit (CPU), and the processor may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
It will also be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example and not limitation, many forms of Random Access Memory (RAM) are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM), SDRAM (SLDRAM), synchlink DRAM (SLDRAM), and direct bus RAM (DR RAM).
The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions or computer programs. The procedures or functions according to the embodiments of the present application are wholly or partially generated when the computer instructions or the computer program are loaded or executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire or wirelessly. 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, data center, etc. that contains one or more collections of available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. The semiconductor medium may be a solid state disk.
In the several embodiments provided in the present application, it should be understood that the disclosed method, apparatus and system may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative; for example, the division of the unit is only a logic function division, and there may be another division manner in actual implementation; for example, various elements or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be physically included alone, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (13)
1. A search space set switching method for a base station, the method comprising:
determining that the user equipment needs to switch a search space set group in the current DRX period;
determining the identifier of a search space set group to be switched in all search space set groups corresponding to the length type of the current DRX period in the active BWP of the user equipment, wherein the number of the search space set groups corresponding to the length type of each DRX period is one or more;
and carrying the identification of the search space set group to be switched in DCI and sending the DCI to the user equipment.
2. The search space set switching method according to claim 1, wherein before determining that the user equipment needs to switch the search space set, the method further comprises:
and configuring a corresponding search space set group for the length type of each DRX period configured by the user equipment.
3. The method according to claim 1, wherein the determining that the user equipment needs to switch the search space set comprises:
and determining that the user equipment needs to switch the search space set group according to the scheduling requirement change of the user equipment.
4. The search space set group switching method of claim 1, wherein said sending the identity of the search space set group to be switched to the user equipment in DCI comprises:
and carrying the identifier of the search space set group to be switched on a special indication bit in the DCI and sending out the special indication bit.
5. The search space set switching method according to claim 1, wherein when the number of search space set sets corresponding to the length type of the DRX cycle is plural, the number of detections in each slot or each span of the plural search space set sets is different.
6. A search space set switching method for a User Equipment (UE) configured with DRX, the method comprising:
receiving DCI from a base station;
determining a search space set group to be switched according to an identifier of the search space set group to be switched carried in the DCI, wherein the base station determines 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 in an active BWP of the user equipment, and the number of the search space set groups corresponding to the length type of each DRX cycle is one or more; DCI is detected at the switched search space set group.
7. The search space set group switching method of claim 6, wherein said receiving DCI from a base station comprises:
and in the current DRX period, detecting the DCI by adopting a default search space set group in the search space set group corresponding to the length type of the current DRX period.
8. The search space set group switching method of claim 6, wherein the detecting DCI in the switched search space set group comprises:
detecting DCI in a post-handover search space set group in active BWP of all serving cells if DCI indicating handover of the search space set group is received at one serving cell;
alternatively, if DCI instructing a handover of a search space set group is received at one serving cell, the DCI is detected at the search space set group after the handover in an active BWP of the serving cell.
9. A search space set switching apparatus for a base station, comprising:
a switching determining module, configured to determine that the ue needs to switch the search space set in the current DRX cycle;
an identifier determining module, configured to determine, in active BWP of the user equipment, an identifier of a search space set group to be switched among all search space set groups corresponding to the length type of the current DRX cycle, where the number of search space set groups corresponding to the length type of each DRX cycle is one or more;
and a sending module, configured to carry the identifier of the search space set group to be switched in DCI and send the DCI to the user equipment.
10. A search space set switching apparatus for a user equipment configured with DRX, the apparatus comprising:
a receiving module, configured to receive DCI from a base station;
a search space set group determining module, configured to determine a search space set group to be switched according to an identifier of the search space set group to be switched, where the identifier of the search space set group to be switched is determined by the base station in all search space set groups corresponding to a length type of a current DRX cycle within active BWP of the user equipment, and the number of the search space set groups corresponding to the length type of each DRX cycle is one or more;
and the detection module is used for detecting the DCI in the switched search space set group.
11. A storage medium having stored thereon a computer program for performing the steps of the search space set switching method according to any one of claims 1 to 8 when the computer program is executed by a processor.
12. A base station comprising a memory and a processor, the memory having stored thereon a computer program operable on the processor, wherein the processor when executing the computer program performs the steps of the search space set switching method of any one of claims 1 to 5.
13. A user equipment comprising a memory and a processor, the memory having stored thereon a computer program operable on the processor, wherein the processor executes the computer program to perform the steps of the search space set switching method according to any one of claims 6 to 8.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011467582.6A CN114630377A (en) | 2020-12-14 | 2020-12-14 | Search space set switching method and device, storage medium, user equipment and base station |
| PCT/CN2021/131131 WO2022127490A1 (en) | 2020-12-14 | 2021-11-17 | Method and apparatus for switching search space set group, and storage medium, user equipment and base station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011467582.6A CN114630377A (en) | 2020-12-14 | 2020-12-14 | Search space set switching method and device, storage medium, user equipment and base station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114630377A true CN114630377A (en) | 2022-06-14 |
Family
ID=81896554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011467582.6A Pending CN114630377A (en) | 2020-12-14 | 2020-12-14 | Search space set switching method and device, storage medium, user equipment and base station |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114630377A (en) |
| WO (1) | WO2022127490A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110831185A (en) * | 2018-08-10 | 2020-02-21 | 华为技术有限公司 | Communication method and device |
| WO2020064908A1 (en) * | 2018-09-28 | 2020-04-02 | Telefonaktiebolaget Lm Ericsson (Publ) | Adaptive control-resource-set (coreset) and/or search-space configuration |
| WO2020199138A1 (en) * | 2019-04-02 | 2020-10-08 | Zte Corporation | Downlink control signaling in wireless communication |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11258570B2 (en) * | 2018-12-13 | 2022-02-22 | Apple Inc. | Joint optimization of bandwidth part, search space and connected mode discontinuous reception operation in 5G New Radio |
| US11395283B2 (en) * | 2019-06-06 | 2022-07-19 | Samsung Electronics Co., Ltd. | Determination of search space sets for physical downlink control channel (PDCCH) monitoring |
-
2020
- 2020-12-14 CN CN202011467582.6A patent/CN114630377A/en active Pending
-
2021
- 2021-11-17 WO PCT/CN2021/131131 patent/WO2022127490A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110831185A (en) * | 2018-08-10 | 2020-02-21 | 华为技术有限公司 | Communication method and device |
| WO2020064908A1 (en) * | 2018-09-28 | 2020-04-02 | Telefonaktiebolaget Lm Ericsson (Publ) | Adaptive control-resource-set (coreset) and/or search-space configuration |
| WO2020199138A1 (en) * | 2019-04-02 | 2020-10-08 | Zte Corporation | Downlink control signaling in wireless communication |
Non-Patent Citations (1)
| Title |
|---|
| ""R1-2002786"", 3GPP TSG_RAN\\WG1_RL1, 1 May 2020 (2020-05-01) * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022127490A1 (en) | 2022-06-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109997405B (en) | Method for performing random access channel procedure and user equipment thereof | |
| CN112514452B (en) | Method for reporting early measurement result in NR wireless network and user equipment | |
| US11570750B2 (en) | Method for paging, access network device, and terminal device | |
| EP2876967A1 (en) | Drx operation with dual connectivity | |
| RU2746891C1 (en) | Mode of transition, network device and terminal device | |
| EP3621399B1 (en) | Method and device for sending random access response message, method and device for receiving random access response message | |
| CN114175730A (en) | User device and method for sidechain performed by user device | |
| EP3829242B1 (en) | Method and device for indicating space-related information | |
| CN110574422B (en) | User device, base station, and random access method | |
| KR102360462B1 (en) | Method, device and communication system for transmitting and acquiring system information | |
| CN112929936A (en) | Cell switching method and device, storage medium, user equipment and base station equipment | |
| US8447316B2 (en) | Method and apparatus for communicating hidden common enhanced dedicated channel resources | |
| US11330502B2 (en) | Communication method and apparatus | |
| CN107466116B (en) | Apparatus and method for processing link switching | |
| WO2018126422A1 (en) | Information transmission method, terminal device and network device | |
| CN110832892A (en) | Method for limiting terminal equipment capability, terminal equipment and network equipment | |
| CN110149702B (en) | Method and device for configuring parameters of bandwidth part, storage medium, base station and user equipment | |
| CN114375045A (en) | Resource pool switching method and device, terminal and network side equipment | |
| KR102313704B1 (en) | Method and apparatus for discontinuous reception | |
| US10278121B2 (en) | Blacklisting techniques for detected set event evaluation | |
| US11032815B2 (en) | Wireless communication method and wireless communications apparatus | |
| CN114630377A (en) | Search space set switching method and device, storage medium, user equipment and base station | |
| CN117156527A (en) | Wireless communication method, network element and storage medium | |
| CN113099737A (en) | Communication method and device | |
| CN106162836B (en) | Wireless communication method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |