CN113709894A

CN113709894A - Search space configuration method and device

Info

Publication number: CN113709894A
Application number: CN202010444420.4A
Authority: CN
Inventors: 马强
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-05-22
Filing date: 2020-05-22
Publication date: 2021-11-26
Anticipated expiration: 2040-05-22
Also published as: CN113709894B

Abstract

The embodiment of the invention provides a search space configuration method and device. Carrying first indication information of a Common Search Space (CSS) in a System Information Block (SIB) message, and sending the SIB message to a terminal UE; configuring a first target signaling in a random access process for the UE, carrying second indication information of a third type public search space set in the first target signaling, and sending the first target signaling to the UE; and carrying third indication information of the special search space USS in the reconfiguration message, and sending the reconfiguration message to the UE. The embodiment of the invention solves the defect that the search space configuration mode has the parameter fuzzy period in the prior art.

Description

Search space configuration method and device

Technical Field

The present invention relates to the field of mobile communications technologies, and in particular, to a search space configuration method and apparatus.

Background

In a New Radio (NR) system of 5G, a Physical Downlink Control Channel (PDCCH) is used to carry Downlink Control information sent by a base station to a terminal (User Equipment, UE). For convenience, the 5G NR system encapsulates information such as the number of OFDM symbols occupied in the frequency domain and the time domain of the PDCCH in a Control Resource Set (CORESET); and encapsulating information such as the PDCCH initial OFDM symbol number and the PDCCH monitoring period in a Search Space (Search Space). Specifically, CORESET exists in a bandwidth Part (BWP), which is a set of all control information including scheduling control information, reference signals, and the like. Similar to the LTE system, there are also Common Search Space (CSS) and UE-Specific Search Space (USS) concepts in CORESET. In the random access process, CSS scheduling is used; after the random access signaling MSG4, USS scheduling is used.

Currently, when a base station transmits MSG4, no Sounding Reference Signal (SRS) is configured, and when a search space is configured according to 5G NR protocol constraints, a Downlink Control Information (DCI) format cannot be configured with DCIx-1 because the SRS is not configured, where x may be 0 or 1. Therefore, the existing search space configuration mode is that a base station configures DCIx-1 on a USS configuration interface at first, configures DCIx-0 when sending MSG4, and replaces DCIx-0 with DCIx-1 during reconfiguration.

During the period from the time when the reconfiguration message is issued to the time before the reconfiguration complete message is received, i.e. during the switching of the DCI x-0 and the DCI x-1, the base station cannot accurately judge whether the UE receives the reconfiguration message, so that a period of fuzzy configuration parameter exists. In the parameter ambiguity period, the base station and the UE have different understanding on the DCI length, and the UE may not receive uplink or downlink scheduling.

Disclosure of Invention

The embodiment of the invention provides a search space configuration method and a search space configuration device, which aim to solve the problem that a search space configuration mode has a parameter fuzzy period in the prior art.

In one aspect, an embodiment of the present invention provides a method for configuring a search space, where the method includes:

carrying first indication information of a common search space CSS in a system information block SIB message, and sending the SIB message to terminal UE;

configuring a first target signaling in a random access process for the UE, carrying second indication information of a third type public search space set in the first target signaling, and sending the first target signaling to the UE;

and carrying third indication information of the special search space USS in the reconfiguration message, and sending the reconfiguration message to the UE.

Optionally, after the step of sending the reconfiguration message to the UE, the method includes:

if the bandwidth part BWP of the UE is not configured with the first USS and the second USS, scheduling the third type public search space set for the UE; the first USS is the USS of the first downlink control information indication DCIx-1, the second USS is the USS of the second downlink control information indication DC x-0, and x is 0 or 1.

Optionally, before the step of scheduling the third type common search space set for the UE, the method includes:

if the BWP of the UE configures the first USS and the first USS is in an activated state, scheduling the first USS for the UE;

if the first USS is not configured to the BWP of the UE or the first USS is in an inactive state, acquiring the second USS of the BWP of the UE;

if the BWP of the UE configures the second USS, scheduling the second USS for the UE;

and if the BWP of the UE is not configured with the second USS, determining that the BWP of the bandwidth part of the UE is not configured with the first USS and the second USS.

when transmitting the target message, if the BWP of the UE is not configured with a second USS, scheduling the third type public search space set for the UE; the second USS is the USS of the second downlink control information indication DCI x-0;

the target message comprises at least one of a first retransmission message, a second retransmission message and a Physical Downlink Control Channel (PDCCH) command message; the first retransmission message is a retransmission message of a second target signaling in a non-competitive random access process; the second retransmission message is a retransmission message of the second target signaling in a non-contention random access process.

and receiving a reconfiguration completion message, activating the USS, and scheduling a first USS for the UE, wherein the first USS is the USS of the first downlink control information indication DCI x-1.

On the other hand, an embodiment of the present invention further provides a search space configuration apparatus, where the apparatus includes:

the CSS configuration module is used for carrying first indication information of a common search space CSS in a system information block SIB message and sending the SIB message to terminal UE;

a Type3 configuration module, configured to configure a first target signaling in a random access process for the UE, carry second indication information of a third Type common search space set in the first target signaling, and send the first target signaling to the UE;

and the USS configuration module is used for carrying third indication information of the special search space USS in the reconfiguration message and sending the reconfiguration message to the UE.

Optionally, the apparatus comprises:

a first scheduling module, configured to schedule the third-type common search space set for the UE if the bandwidth portion BWP of the UE is not configured with the first USS and the second USS; the first USS is the USS of the first downlink control information indication DCIx-1, the second USS is the USS of the second downlink control information indication DC x-0, and x is 0 or 1.

Optionally, the apparatus comprises:

a second scheduling module, configured to schedule the first USS for the UE if the first USS is configured by the BWP of the UE and the first USS is in an active state;

Optionally, the apparatus comprises:

a third scheduling module, configured to schedule the third type common search space set for the UE when a target message is transmitted, if the BWP of the UE is not configured with the second USS; the second USS is the USS of the second downlink control information indication DCI x-0;

Optionally, the apparatus comprises:

and a fourth scheduling module, configured to receive the reconfiguration complete message, activate the USS, and schedule a first USS for the UE, where the first USS is a USS for which the first downlink control information indicates DCI x-1.

In yet another aspect, an embodiment of the present invention further provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the steps in the search space configuration method as described above when executing the computer program.

In still another aspect, an embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when executed by a processor, the computer program implements the steps in the search space configuration method described above.

In the embodiment of the invention, the first indication information of a common search space CSS is carried in a system information block SIB message, and the CSS is used for UE to carry out random access; configuring a first target signaling in a random access process for the UE, wherein the first target signaling carries second indication information of a third type public search space set, and the third type public search space set is used for signaling and data scheduling of the UE in the access process; and carrying third indication information of a special search space USS in the reconfiguration message, and sending the reconfiguration message to the UE, wherein the USS is used for switching the UE to DCIx-1 scheduling, so that a parameter ambiguity period during DCI x-0 and DCI x-1 switching is avoided, and DCI format switching and scheduling of an NR system are realized.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a flowchart illustrating steps of a method for configuring a search space according to an embodiment of the present invention;

FIG. 2 is an interaction scenario diagram of a first example of an embodiment of the invention;

FIG. 3 is an interaction scenario diagram of a second example of an embodiment of the present invention;

fig. 4 is a block diagram of a search space configuration apparatus according to an embodiment of the present invention;

fig. 5 is a block diagram of an electronic device according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

In the embodiments provided herein, it should be understood that "B corresponding to A" means that B is associated with A from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may be determined from a and/or other information.

Fig. 1 is a schematic flowchart illustrating a search space configuration method according to an embodiment of the present invention.

As shown in fig. 1, an embodiment of the present invention provides a search space configuration method, which may be optionally applied to a network side device, where the network side device may be a Base Station (BS), and the Base Station is a device deployed in an access network to provide a wireless communication function for a UE. The base stations may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. In systems using different radio access technologies, the names of devices with base station functionality may differ, for example in a 5G NR system, called nodeb or gNB. The name "base station" may change as communication technology evolves. For convenience of description, in the embodiment of the present invention, the apparatus for providing a wireless communication function for a UE is collectively referred to as a network side device.

The method comprises the following steps:

step 101, carrying first indication information of a common search space CSS in a system information block SIB message, and sending the SIB message to a terminal UE.

Wherein, a System Information Block (SIB) is sent to the UE by a network side device, the SIB includes a set of functionally associated parameters, and based on different communication protocols, the SIB is divided into multiple types according to the included parameters; for example, the SIB1 includes not only information about the time domain scheduling of other SIBs, but also parameters necessary to determine whether a particular cell is suitable for cell selection. The UE receives the SIB1 via broadcast signaling or dedicated signaling.

The network side equipment carries the first indication information of the CSS in the SIB message, so that the UE monitors the CSS according to the first indication information, and the common search space is a search space which all UEs need to monitor.

As a first example, referring to fig. 2, step 1, a network side device configures a conventional CSS in an SIB phase, carries first indication information of the CSS in an SIB message, and sends the SIB message to a terminal UE, so that the UE monitors the CSS corresponding to the first indication information to perform random access. Specifically, the Random Access procedure is a Random Access Channel (RACH) procedure. The random access procedure is used for procedures including initial access, UL synchronization adjustment, resource allocation, handover, and the like. The random access procedure is divided into a contention based procedure and a non-contention based procedure. Generally, a contention-based random access procedure is used to perform initial access.

Step 102, configuring a first target signaling in a random access process for the UE, carrying second indication information of a third type public search space set in the first target signaling, and sending the first target signaling to the UE.

Optionally, the first target signaling is MSG4 signaling, and the random access procedure generally sends multiple MSG1 signaling in sequence; specifically, MSG1 is used to send a Random Access Preamble; MSG2 is used to send a Random Access Response (Random Access Response); MSG3 is used for First scheduled UL Transmission; the MSG4 is used for contention resolution access, i.e., contention-based random access.

And a third Type common search space set, namely Type3-PDCCH CSS set, which is used for monitoring an uplink power control PDCCH, a downlink pre-Indication PDCCH, a Slot Format Indication (Slot Format Indication) PDCCH, a PDCCH related to downlink data transmission, and the like. Since the Type3-PDCCH CSS set may be scrambled using a Cell-Radio Network Temporary Identifier (C-RNTI), so that a UE belonging to a combination detects control information related to itself in a group common search space (group common search space), after the UE randomly accesses, a Network side device may schedule the UE using the Type3-PDCCH CSS set.

Referring to fig. 2, in step 2, the network side device configures Type3-PDCCH CSS set at the stage of MSG4, carries second indication information of Type3-PDCCH CSS set in an MSG4 signaling message, and sends the MSG4 signaling message to the terminal UE.

Step 103, carrying the third indication information of the dedicated search space USS in the reconfiguration message, and sending the reconfiguration message to the UE.

The dedicated search space corresponding to the UE is a search space that the UE needs to monitor. For the UE, the UE only needs to monitor the UE-specific search space corresponding to the UE, and does not need to monitor the UE-specific search spaces corresponding to other UEs.

The network side device issues DCI to the terminal, where the DCI is carried by the PDCCH and includes information such as uplink and downlink resource allocation, Hybrid Automatic Repeat ReQuest (HARQ), power control, and the like. Different DCI information, whose roles are different; for example, DCI allocated to downlink Resource Blocks (RBs), DCI allocated to uplink RBs, DCI adjusted for uplink power control, DCI for downlink dual-stream space division multiplexing, and the like. The protocols classify these DCIs and distinguish them with different DCI formats. For example, in the protocol of version R9 in Long Term Evolution (LTE) system, the following DCI are defined: DCI0, DCI1, DCI1A, DCI1B, DCI1C, DCI1D, DCI2, DCI2A, DCI2B, DCI3, DCI 3A; the DCI0, the DCI3, and the DCI3A are DCI types related to an uplink PUSCH or PUCCH, and are referred to as uplink DCI in the embodiment of the present invention; the DCI1, the DCI1A, the DCI1B, the DCI1C, the DCI1D, the DCI2, the DCI2A, and the DCI2B are DCI types for the downlink PDSCH, and are referred to as downlink DCI in the embodiment of the present invention.

As another example, in the protocol of version R15 in the 5G NR system, the following DCI formats are defined: DCI0-0, DCI0-1, DCI1-0, DCI1-1, DCI2-1, DCI2-2 and DCI 2-3; the DCI0-0 and the DCI0-1 are DCI types related to uplink PUSCH or PUCCH, and are referred to as uplink DCI in the embodiment of the invention; the DCI1-0 and the DCI1-1 are DCI types for downlink PDSCH, and are referred to as downlink DCI in the embodiment of the invention.

And the network side equipment carries the third indication information in the reconfiguration message and sends the reconfiguration message to the UE, so that the UE can be switched to DCI x-1 scheduling. Thus, after the UE randomly accesses to schedule the UE by using Type3-PDCCH CSS set and issues the reconfiguration message, the UE is scheduled by using DCIx-1, and the switching time of DCI x-0 and DCI x-1 switching does not occur.

Referring to fig. 2, step 3, the network side device configures the third indication information of the USS in the reconfiguration phase, carries the third indication information of the USS in the reconfiguration message (reconfiguration message), and sends the reconfiguration message to the terminal UE.

As a second example, referring to table 1 below, the network side device may configure the search space type using the following format:

table 1:

in the embodiment of the invention, the first indication information of a common search space CSS is carried in a system information block SIB message, and the CSS is used for UE to carry out random access; configuring a first target signaling in a random access process for the UE, wherein the first target signaling carries second indication information of a third type public search space set, and the third type public search space set is used for signaling and data scheduling of the UE in the access process; and carrying third indication information of a special search space USS in the reconfiguration message, and sending the reconfiguration message to the UE, wherein the USS is used for switching the UE to DCIx-1 scheduling, so that a parameter ambiguity period during DCI x-0 and DCI x-1 switching is avoided, and DCI format switching and scheduling of an NR system are realized. The embodiment of the invention solves the defect that the search space configuration mode has the parameter fuzzy period in the prior art.

Optionally, in this embodiment of the present invention, after the step of sending the reconfiguration message to the UE, the method includes:

For the scheduling of the user after random access, except for the common scheduling such as MSG2, it is first determined whether the first USS and the second USS are configured in the bandwidth portion BWP of the UE, and if neither the first USS nor the second USS is configured, the Type3-PDCCH CSS set is scheduled for the UE. In addition, if no Type3-PDCCH CSS set is configured in BWP of the UE, ra-SearchSpace is used.

Optionally, in this embodiment of the present invention, before the step of scheduling the third type common search space set for the UE, the method includes the following first to fourth steps:

step one, if the first USS is configured by BWP of the UE and is in an activated state, scheduling the first USS for the UE; the active state is an active state, and if the first USS is available, the first USS is scheduled preferentially.

Secondly, if the first USS is not configured for the BWP of the UE or the first USS is in an inactive state, acquiring a second USS of the BWP of the UE; it is further determined whether a second USS is available.

Step three, if the BWP of the UE configures the second USS, the second USS is scheduled for the UE;

and fourthly, if the BWP of the UE is not configured with the second USS, determining that the BWP of the bandwidth part of the UE is not configured with the first USS and the second USS, and if the first USS and the second USS are unavailable, scheduling Type3-PDCCH CSS set for the UE.

The second target signaling, MSG3 signaling; in some special scenarios, a base station needs to use DCI x-0 for scheduling, such as non-contention MSG3 retransmission message, contention random access MSG3 retransmission message, PDCCH order message (PDCCH order message), and the like, but in the prior art, the search space configuration method cannot solve the problem. In the embodiment of the invention, if the BWP of the UE is configured with a second USS, the USS of the DCI x-0 is scheduled for the UE; and if the second USS is not configured, scheduling 3-PDCCH CSS set for the UE.

Receiving a reconfiguration completion message, activating the USS to enable the USS to take effect, and switching to DCI x-1 scheduling; and scheduling the UE by using Type3-PDCCH CSS set after the UE randomly accesses, and scheduling the UE by using DCIx-1 after receiving the reconfiguration completion message, wherein the switching time of DCI x-0 and DCI x-1 switching does not occur.

As a third example, referring to fig. 3, after step 3 shown in fig. 2, the network side device further performs step 4 to cache the third indication information of the USS, and does not take effect immediately;

and step 5, after receiving the reconfiguration completion message, taking the USS into effect.

With the above description of the search space configuration method according to the embodiment of the present invention, a search space configuration apparatus according to the embodiment of the present invention will be described with reference to the accompanying drawings.

Referring to fig. 4, an embodiment of the present invention further provides a search space configuration apparatus, which may be optionally applied to a network side device, where the network side device may be a base station, and the base station is an apparatus deployed in an access network to provide a wireless communication function for a UE. The base stations may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. In systems using different radio access technologies, the names of devices with base station functionality may differ, for example in a 5G NR system, called nodeb or gNB. The name "base station" may change as communication technology evolves. For convenience of description, in the embodiment of the present invention, the apparatus for providing a wireless communication function for a UE is collectively referred to as a network side device.

The device comprises:

a CSS configuration module 401, configured to carry first indication information of a common search space CSS in a system information block SIB message, and send the SIB message to a terminal UE.

The SIB is sent to the UE by network side equipment, the SIB comprises a set of functionally related parameters, and the SIB is divided into a plurality of types according to the included parameters based on different communication protocols; for example, the SIB1 includes not only information about the time domain scheduling of other SIBs, but also parameters necessary to determine whether a particular cell is suitable for cell selection. The UE receives the SIB1 via broadcast signaling or dedicated signaling.

Referring to fig. 2, in step 1, the network side device configures a conventional CSS in an SIB stage, carries first indication information of the CSS in an SIB message, and sends the SIB message to the terminal UE, so that the UE monitors the CSS corresponding to the first indication information to perform random access. Specifically, the random access procedure is the RACH procedure. The random access procedure is used for procedures including initial access, UL synchronization adjustment, resource allocation, handover, and the like. The random access procedure is divided into a contention based procedure and a non-contention based procedure. Generally, a contention-based random access procedure is used to perform initial access.

A Type3 configuration module 402, configured to configure a first target signaling in a random access process for the UE, carry second indication information of a third Type common search space set in the first target signaling, and send the first target signaling to the UE.

Optionally, the first target signaling is MSG4 signaling, and the random access procedure generally sends multiple MSG1 signaling in sequence; specifically, MSG1 is used to send a random access preamble; the MSG2 is used for sending a random access response; MSG3 is used to schedule transmissions for the first time; the MSG4 is used for contention resolution access, i.e., contention-based random access.

And a third Type common search space set, namely Type3-PDCCH CSS set, wherein the search space set is used for monitoring an uplink power control PDCCH, a downlink pre-indication PDCCH, a time slot format indication PDCCH, a PDCCH related to downlink data transmission and the like. Since the Type3-PDCCH CSS set can use the cell radio network temporary identifier to scramble, so that a UE belonging to a combination can detect control information related to the UE in a group common search space, after the UE is randomly accessed, the network side equipment can use the Type3-PDCCH CSS set to schedule the UE.

A USS configuration module 403, configured to carry third indication information of the dedicated search space USS in the reconfiguration message, and send the reconfiguration message to the UE.

And the network side equipment issues DCI to the terminal, wherein the DCI is borne by the PDCCH and comprises information of uplink and downlink resource allocation, HARQ, power control and the like. Different DCI information, whose roles are different; for example, DCI allocated to downlink resource blocks, DCI allocated to uplink RBs, DCI adjusted for uplink power control, DCI for downlink dual-stream space division multiplexing, and the like. The protocols classify these DCIs and distinguish them with different DCI formats. For example, in the protocol of version R9 in the LTE system, the following DCI are defined: DCI0, DCI1, DCI1A, DCI1B, DCI1C, DCI1D, DCI2, DCI2A, DCI2B, DCI3, DCI 3A; the DCI0, the DCI3, and the DCI3A are DCI types related to an uplink PUSCH or PUCCH, and are referred to as uplink DCI in the embodiment of the present invention; the DCI1, the DCI1A, the DCI1B, the DCI1C, the DCI1D, the DCI2, the DCI2A, and the DCI2B are DCI types for the downlink PDSCH, and are referred to as downlink DCI in the embodiment of the present invention.

Referring to table 2 below, the network side device may configure the search space type using the following format:

table 2:

optionally, in an embodiment of the present invention, the apparatus includes:

Optionally, in an embodiment of the present invention, the apparatus includes:

The search space configuration device provided in the embodiment of the present invention can implement each process implemented by the base station side in the method embodiments of fig. 1 to fig. 3, and is not described here again to avoid repetition.

In the embodiment of the present invention, a CSS configuration module 401 carries first indication information of a common search space CSS in a system information block SIB message, where the CSS is used for a UE to perform random access; a Type3 configuration module 402 configures a first target signaling for the UE in a random access process, where the first target signaling carries second indication information of a third Type common search space set, and the third Type common search space set is used for signaling and data scheduling of the UE in the access process; the USS configuration module 403 carries third indication information of the USS in the reconfiguration message, and sends the reconfiguration message to the UE, where the USS is used for switching the UE to DCIx-1 scheduling, so as to avoid a parameter ambiguity period during DCI x-0 and DCI x-1 switching, and implement DCI format switching and scheduling of the NR system.

On the other hand, the embodiment of the present invention further provides an electronic device, which includes a memory, a processor, a bus, and a computer program stored on the memory and executable on the processor, where the processor implements the steps in the search space configuration method when executing the program.

For example, fig. 5 shows a schematic physical structure diagram of an electronic device.

As shown in fig. 5, the electronic device may include: a processor (processor)510, a communication Interface (Communications Interface)520, a memory (memory)530 and a communication bus 540, wherein the processor 510, the communication Interface 520 and the memory 530 communicate with each other via the communication bus 540. Processor 510 may call logic instructions in memory 530 to perform the following method:

Furthermore, the logic instructions in the memory 530 may be implemented in the form of software functional units and stored in a computer readable storage medium when the software functional units are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

In still another aspect, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is implemented to, when executed by a processor, perform the search space configuration method provided in the foregoing embodiments, for example, including:

The above-described embodiments of the apparatus are merely illustrative, and 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 modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.

Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A method for configuring a search space, the method comprising:

2. The search space configuration method of claim 1, wherein after the step of transmitting the reconfiguration message to the UE, the method comprises:

3. The method according to claim 2, wherein the step of scheduling the third type common search space set for the UE is preceded by:

4. The search space configuration method of claim 1, wherein after the step of transmitting the reconfiguration message to the UE, the method comprises:

when transmitting the target message, if the BWP of the UE is not configured with a second USS, scheduling the third type public search space set for the UE; the second USS is the USS of the second downlink control information indication DCIx-0;

5. The search space configuration method of claim 1, wherein after the step of transmitting the reconfiguration message to the UE, the method comprises:

and receiving a reconfiguration completion message, activating the USS, and scheduling a first USS for the UE, wherein the first USS is the USS of the first downlink control information indication DCIx-1.

6. An apparatus for configuring a search space, the apparatus comprising:

7. The search space configuration apparatus of claim 6, wherein the apparatus comprises:

8. The search space configuration apparatus of claim 7, wherein the apparatus comprises:

9. The search space configuration apparatus of claim 6, wherein the apparatus comprises:

a third scheduling module, configured to schedule the third type common search space set for the UE when a target message is transmitted, if the BWP of the UE is not configured with the second USS; the second USS is the USS of the second downlink control information indication DCIx-0;

10. The search space configuration apparatus of claim 6, wherein the apparatus comprises:

11. An electronic device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, characterized in that the computer program, when executed by the processor, implements the steps of the search space configuration method according to any of claims 1 to 5.

12. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the search space configuration method according to any one of claims 1 to 5.