CN113709894B

CN113709894B - Search space configuration method and device

Info

Publication number: CN113709894B
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: 2024-01-26
Anticipated expiration: 2040-05-22
Also published as: CN113709894A

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 a 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 a 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 5G New Radio (NR) system, a physical downlink control channel (Physical Downlink Control Channel, PDCCH) is used to carry downlink control information sent by a base station to a terminal (UE). The UE can successfully decode the PDCCH only by knowing the position of the PDCCH on the frequency domain and the position of the PDCCH on the time domain, and for convenience, the 5G NR system encapsulates the information such as the frequency band occupied on the PDCCH frequency domain, the OFDM symbol number occupied on the time domain and the like in a control resource set (Control Resource Set, CORESET); information such as the PDCCH start OFDM symbol number and the PDCCH monitoring period is encapsulated 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 is also the concept of a common search space (Common Search Space, CSS) and a UE-specific search space (UE-Specific Search Space, USS) in CORESET. In the random access process, CSS scheduling is used; after the random access signaling MSG4 USS scheduling is used.

Currently, the base station does not configure the sounding reference signal (Sounding Reference Signal, SRS) when sending MSG4, but when configuring the search space according to the 5G NR protocol constraint, the unconfigured SRS will cause that the format of the downlink control information (Downlink Control Information, DCI) cannot configure DCIx-1, where x may be 0 or 1. Therefore, the existing search space configuration mode is that the base station firstly configures DCIx-1 in the USS configuration interface, configures DCIx-0 when MSG4 is sent, and replaces DCIx-0 with DCIx-1 when the MSG4 is reconfigured.

The base station cannot accurately judge whether the UE receives the reconfiguration message or not in the period from the time when the reconfiguration message is issued to the time when the reconfiguration completion message is received, namely, during the switching period of the DCI x-0 and the DCI x-1, so that a period of configuration parameter ambiguity 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 device, which are used for solving the defect 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 search space configuration method, 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 a terminal User Equipment (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 a 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 a USS of which the first downlink control information indicates DCIx-1, and the second USS is a USS of which the second downlink control information indicates DC x-0, wherein x is 0 or 1.

Optionally, before the step of scheduling the third type of 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 active state, scheduling the first USS for the UE;

if the BWP of the UE does not configure the first USS 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, the second USS is scheduled for the UE;

if the BWP of the UE does not configure the second USS, determining that the BWP of the bandwidth part of the UE does not configure the first USS and the second USS.

when transmitting a 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 a USS of which the second downlink control information indicates 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-contention random access process; and the second retransmission message is the retransmission message of the second target signaling in the 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 a USS of which the first downlink control information indicates DCI x-1.

In another aspect, an embodiment of the present invention further provides a search space configuration apparatus, where the apparatus includes:

a CSS configuration module, 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;

a Type3 configuration module, configured to configure a first target signaling in a random access procedure for the UE, carry second indication information of a third Type public 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 a reconfiguration message and sending the reconfiguration message to the UE.

Optionally, the apparatus comprises:

a first scheduling module, configured to schedule the third type of public 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 a USS of which the first downlink control information indicates DCIx-1, and the second USS is a USS of which the second downlink control information indicates DC x-0, wherein x is 0 or 1.

Optionally, the apparatus comprises:

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

Optionally, the apparatus comprises:

a third scheduling module, configured to schedule the third type of public search space set for the UE if the BWP of the UE does not configure the second USS when transmitting the target message; the second USS is a USS of which the second downlink control information indicates DCI x-0;

Optionally, the apparatus comprises:

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

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

In yet another aspect, embodiments of the present invention also provide a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps in a search space configuration method as described above.

In the embodiment of the invention, first indication information of a Common Search Space (CSS) is carried in a System Information Block (SIB) message, and the CSS is used for random access of UE; 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 in the access process of the UE; and carrying third indication information of a special search space USS in a reconfiguration message, and sending the reconfiguration message to the UE, wherein the USS is used for switching to DCIx-1 scheduling by the UE, so that parameter ambiguity periods during DCI x-0 and DCI x-1 switching are 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 that are needed in the description of the embodiments of the present invention will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

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

FIG. 2 is an interaction scenario diagram of a first example of an embodiment of the present 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 device 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 following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the 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 order of execution, and the order of execution of the processes should be determined by the functions and internal logic, and should not constitute any limitation on 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 may be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may also determine B from a and/or other information.

Fig. 1 shows a flow chart of 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, optionally, the method may be 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 employing different radio access technologies, the names of base station capable devices may vary, for example in 5G NR systems, called gndeb or gNB. As communication technology evolves, the name "base station" may change. For convenience of description, in the embodiment of the present invention, the above-mentioned devices for providing wireless communication functions for UEs are collectively referred to as network side devices.

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

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

As a first example, referring to fig. 2, 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 listens to the CSS corresponding to the first indication information for random access. Specifically, the random access procedure is a random access channel (Random Access Channel, RACH) procedure. The random access procedure is used for procedures including initial access, UL synchronization adjustment, resource allocation, handover, etc. Random access procedures are classified into contention-based procedures and non-contention-based procedures. In general, 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 transmitting the first target signaling to the UE.

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

A third Type of common search space set, i.e., type3-PDCCH csset, is used for listening to uplink power control PDCCH, downlink pre-transmission PDCCH, slot format indication (Slot Format Indication) PDCCH, PDCCH related to downlink data transmission, etc. Since the Type3-PDCCH csset may be scrambled using a Cell radio network temporary identity (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 is randomly accessed, the network side device may schedule the UE using the Type3-PDCCH csset.

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

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

The special search space corresponding to the UE is the search space which the UE needs to monitor. For the UE, it only needs to monitor the UE-specific search space corresponding to itself, and does not need to monitor the UE-specific search spaces corresponding to other UEs.

The network side equipment issues DCI to the terminal, wherein the DCI is carried by the PDCCH and comprises information such as uplink and downlink resource allocation, hybrid automatic repeat ReQuest (Hybrid Automatic Repeat ReQuest, HARQ), power control and the like. Different DCI information, which acts differently; for example, DCI allocated to a downlink Resource Block (RB), DCI allocated to an uplink RB, DCI adjusted for uplink power control, DCI for downlink dual-stream space division multiplexing, and the like. The protocol classifies these DCIs and distinguishes between different DCI formats. For example, in the protocol of release R9 in long term evolution (Long Term Evolution, LTE) systems, the following several DCIs are defined: DCI0, DCI1A, DCI1B, DCI1C, DCI1D, DCI, DCI2A, DCI2B, DCI3, DCI3A; wherein, DCI0, DCI3A are DCI types related to uplink PUSCH or PUCCH, which are referred to as uplink DCI in the embodiment of the present invention; while DCI1, DCI1A, DCI1B, DCI1C, DCI1D, DCI, DCI2A, DCI B are DCI types for downlink PDSCH, which is referred to as downlink DCI in the embodiment of the present invention.

For 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, DCI2-2 and DCI2-3; wherein, DCI0-0 and DCI0-1 are DCI types related to uplink PUSCH or PUCCH, which are called uplink DCI in the embodiment of the invention; DCI1-0 and DCI1-1 are DCI types for downlink PDSCH, and are called downlink DCI in the embodiment of the invention.

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. In this way, after the UE is randomly accessed and scheduled by using the Type3-PDCCH CSS set and the reconfiguration message is issued, and then the UE is scheduled by using the DCIx-1, the switching time of DCI x-0 and DCI x-1 is not generated.

Referring to fig. 2, step 3, the network side device configures the third indication information of USS in the reconfiguration stage, carries the third indication information of USS in the reconfiguration message (Reconfig 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, first indication information of a Common Search Space (CSS) is carried in a System Information Block (SIB) message, and the CSS is used for random access of UE; 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 in the access process of the UE; and carrying third indication information of a special search space USS in a reconfiguration message, and sending the reconfiguration message to the UE, wherein the USS is used for switching to DCIx-1 scheduling by the UE, so that parameter ambiguity periods during DCI x-0 and DCI x-1 switching are 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 a parameter fuzzy period in the prior art.

Optionally, in an 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 public scheduling such as MSG2, firstly judging whether the bandwidth BWP of the UE is configured with a first USS and a second USS, and if the first USS and the second USS are not configured, scheduling a Type3-PDCCH CSS set for the UE. In addition, if the BWP of the UE is also not configured with Type3-PDCCH CSS set, ra-SearchSpace is used.

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

a first step of scheduling the first USS for the UE if the BWP of the UE configures the first USS and the first USS is in an active state; the active state is the active state, and if the first USS is available, the first USS is preferentially scheduled.

A second step of acquiring the second USS of the BWP of the UE if the BWP of the UE is not configured with the first USS or the first USS is in an inactive state; it is further determined whether the second USS is available.

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

fourth, if the BWP of the UE does not configure the second USS, determining that the BWP of the bandwidth part of the UE does not configure the first USS and the second USS, and if neither the first USS nor the second USS is available, scheduling Type3-PDCCH CSS set for the UE.

The second target signaling is MSG3 signaling; in some special scenarios, the base station needs to schedule with DCI x-0, such as non-competing MSG3 retransmission message, competing MSG3 retransmission message for random access, PDCCH order message (PDCCH order message), etc., but in the prior art, the search space configuration mode cannot solve the problem. In the embodiment of the present invention, if the BWP of the UE is configured with the second USS, the USS of DCI x-0 is scheduled for the UE; and if the second USS is not configured, scheduling Type3-PDCCH CSS set for the UE.

Receiving a reconfiguration complete message, activating the USS, enabling the USS to be effective, and switching to DCI x-1 scheduling; and after the UE is subjected to random access and is scheduled by using the Type3-PDCCH CSS set and the reconfiguration completion message is received, the UE is scheduled by using the DCIx-1, and the switching time of DCI x-0 and DCI x-1 is not generated.

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

and step 5, after receiving the reconfiguration complete message, validating the USS.

Having described the search space configuration method provided by the embodiment of the present invention, the search space configuration device provided by the embodiment of the present invention will be described below with reference to the accompanying drawings.

Referring to fig. 4, the embodiment of the present invention further provides a search space configuration apparatus, and optionally, the apparatus may be 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 employing different radio access technologies, the names of base station capable devices may vary, for example in 5G NR systems, called gndeb or gNB. As communication technology evolves, the name "base station" may change. For convenience of description, in the embodiment of the present invention, the above-mentioned devices for providing wireless communication functions for UEs are collectively referred to as network side devices.

The device comprises:

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

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

Referring to fig. 2, step 1, a 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 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 RACH procedure. The random access procedure is used for procedures including initial access, UL synchronization adjustment, resource allocation, handover, etc. Random access procedures are classified into contention-based procedures and non-contention-based procedures. In general, a contention-based random access procedure is used to perform initial access.

The Type3 configuration module 402 is configured to configure a first target signaling in a random access procedure for the UE, carry second indication information of a third Type public 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 typically sends multiple MSG1 signaling in sequence; specifically, MSG1 is used to transmit a random access preamble; MSG2 is used for sending random access response; MSG3 is used for first time scheduling transmission; MSG4 is used for contention resolution access, i.e. contention-based random access.

A third Type of common search space set, i.e. Type3-PDCCH csset, is used for monitoring uplink power control PDCCH, downlink pre-transmission PDCCH, timeslot format indicator PDCCH, PDCCH related to downlink data transmission, etc. Since the Type3-PDCCH csset can use the cell radio network temporary identifier to scramble, so that a UE belonging to a combination detects control information related to the UE in the group public search space, after the UE is randomly accessed, the network side device can use the Type3-PDCCH csset to schedule the UE.

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

And the network side equipment transmits DCI to the terminal, wherein the DCI is carried by the PDCCH and comprises information such as uplink and downlink resource allocation, HARQ, power control and the like. Different DCI information, which acts differently; 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 protocol classifies these DCIs and distinguishes between different DCI formats. For example, in the protocol of release R9 in the LTE system, the following several DCIs are defined: DCI0, DCI1A, DCI1B, DCI1C, DCI1D, DCI, DCI2A, DCI2B, DCI3, DCI3A; wherein, DCI0, DCI3A are DCI types related to uplink PUSCH or PUCCH, which are referred to as uplink DCI in the embodiment of the present invention; while DCI1, DCI1A, DCI1B, DCI1C, DCI1D, DCI, DCI2A, DCI B are DCI types for downlink PDSCH, which is 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 at the base station side in the method embodiments of fig. 1 to 3, and in order to avoid repetition, a description is omitted here.

In the embodiment of the present invention, the CSS configuration module 401 carries first indication information of a common search space CSS in a SIB message of a system information block, where the CSS is used for UE to perform random access; the Type3 configuration module 402 configures 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 in the access process of the UE; the USS configuration module 403 carries third indication information of the special search space USS in a reconfiguration message, sends the reconfiguration message to the UE, and the USS is used for the UE to switch to DCIx-1 for scheduling, so that a parameter ambiguity period during switching of DCI x-0 and DCI x-1 is avoided, and switching and scheduling of an NR system DCI format are realized.

In another aspect, an embodiment of the present invention further provides an electronic device, including a memory, a processor, a bus, and a computer program stored in the memory and capable of running on the processor, where the processor implements the steps in the search space configuration method described above when executing the program.

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

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

Further, the logic instructions in the memory 530 described above may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as a stand-alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform 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, random Access Memory), a magnetic disk, or an optical disk, or 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 having stored thereon a computer program, which when executed by a processor is implemented to perform the search space configuration method provided in the above embodiments, for example, including:

The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.

From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the 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 scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A search space configuration method, the method comprising:

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; wherein the third type of common search space set is used for scheduling the UE;

and carrying third indication information of a special search space USS in a reconfiguration message, and sending the reconfiguration message to the UE so as to enable the UE to be switched to DCIx-1 scheduling.

2. The search space configuration method according to claim 1, wherein after the step of transmitting 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 a USS of which the first downlink control information indicates DCIx-1, the second USS is a USS of which the second downlink control information indicates DC x-0, and x is 0 or 1.

3. The search space configuration method according to claim 2, wherein prior to the step of scheduling the third type of common search space set for the UE, the method comprises:

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

when transmitting a 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 a USS of which the second downlink control information indicates DCIx-0;

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

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

6. A search space configuration apparatus, the apparatus comprising:

a Type3 configuration module, configured to configure a first target signaling in a random access procedure for the UE, carry second indication information of a third Type public search space set in the first target signaling, and send the first target signaling to the UE; wherein the third type of common search space set is used for scheduling the UE;

and the USS configuration module is used for carrying third indication information of the special search space USS in a reconfiguration message, and sending the reconfiguration message to the UE so as to enable the UE to be switched to DCIx-1 scheduling.

7. The search space configuration apparatus according to claim 6, characterized in that the apparatus comprises:

a first scheduling module, configured to schedule the third type of public 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 a USS of which the first downlink control information indicates DCIx-1, the second USS is a USS of which the second downlink control information indicates DC x-0, and x is 0 or 1.

8. The search space configuration apparatus according to claim 7, characterized in that the apparatus comprises:

9. The search space configuration apparatus according to claim 6, characterized in that the apparatus comprises:

a third scheduling module, configured to schedule the third type of public search space set for the UE if the BWP of the UE does not configure the second USS when transmitting the target message; the second USS is a USS of which the second downlink control information indicates DCIx-0;

10. The search space configuration apparatus according to claim 6, characterized in that 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, wherein the computer program when executed by the processor implements the steps of the search space configuration method of any one of claims 1 to 5.

12. A computer readable storage medium, characterized in that the computer readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of the search space configuration method according to any of claims 1 to 5.