CN115189804B

CN115189804B - Method and device for detecting and receiving PDCCH (physical downlink control channel)

Info

Publication number: CN115189804B
Application number: CN202110359677.4A
Authority: CN
Inventors: 沈姝伶; 王磊
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2021-04-02
Filing date: 2021-04-02
Publication date: 2023-06-23
Anticipated expiration: 2041-04-02
Also published as: CN115189804A

Abstract

The embodiment of the application provides a method and a device for detecting a received PDCCH, which are used for avoiding unnecessary resource overhead and blind detection overhead and reducing blocking (blocking) probability of the PDCCH. The method comprises the following steps: determining whether a first MO in a first search space and a second MO in a second search space overlap in a time domain, wherein the first search space is a UE exclusive search space corresponding to a scheduled carrier, and the second search space is a UE exclusive search space corresponding to the scheduled carrier; if yes, determining whether PDCCHs corresponding to the same DCI format need to be detected and received in the first MO and the second MO; and when necessary, determining a PDCCH corresponding to the received first DCI format detected in the first MO and a PDCCH corresponding to the received second DCI format detected in the second MO according to a monitoring rule, wherein the first DCI format and the second DCI format are different.

Description

Method and device for detecting and receiving PDCCH (physical downlink control channel)

Technical Field

The present invention relates to the field of mobile communications, and in particular, to a method and apparatus for detecting a received PDCCH.

Background

In the dynamic spectrum sharing (Dynamic Spectrum Sharing, DSS) study, when a Primary Cell (PCell) or a Primary Secondary Cell (Primary Secondary Cell, PSCell) is scheduled from a Secondary Cell (SCell) (i.e., when cross-carrier scheduling), in order to ensure scheduling flexibility, a terminal-specific search space (UE-Specific Search Space, USS) allowed to be configured on the scheduled PCell/PSCell is passed on the RAN1#104e conference.

When configuring USS for a terminal, higher layer signaling of a network device needs to configure one or more DCI format types that a UE needs to monitor in the USS, wherein 6 types of DCI (Downlink Control Information, DCI) format types specific to the UE are DCI 0_0, DCI 1_0, DCI 0_1, DCI 1_1, DCI 0_2 and DCI 1_2 respectively. And because the network device can configure any DCI format type for USSs on the SCell and the PCell/PSCell of the terminal, the terminal may need to detect and receive PDCCHs corresponding to the same DCI format in USSs of the SCell and the PCell/PSCell at the same time, thereby causing unnecessary resource overhead and blind detection overhead, and increasing blocking probability of the PDCCHs.

Disclosure of Invention

The embodiment of the application provides a method and a device for detecting a received PDCCH, which are used for avoiding unnecessary resource overhead and blind detection overhead and reducing the blocking probability of the PDCCH.

In a first aspect, a method of detecting reception of a PDCCH is provided, the method comprising:

determining whether a first monitoring time MO in a first search space and a second MO in a second search space overlap in a time domain, wherein the first search space is a UE exclusive search space corresponding to a scheduled carrier, and the second search space is a UE exclusive search space corresponding to the scheduled carrier;

If the first MO and the second MO are overlapped in the time domain, determining whether PDCCHs corresponding to the same DCI format are needed to be detected and received in the first MO and the second MO;

if it is determined that the PDCCHs corresponding to the same DCI format need to be detected and received in the first MO and the second MO, determining the PDCCHs corresponding to the received first DCI format and the PDCCHs corresponding to the received second DCI format in the first MO according to a monitoring rule, wherein the first DCI format and the second DCI format are different.

Optionally, the listening rule is predefined by a protocol; alternatively, the listening rule is received by the terminal from a network device.

Optionally, if the listening rule is predefined by a protocol, the listening rule includes:

detecting PDCCHs corresponding to DCI formats received in different scheduling directions in the first MO and the second MO respectively; or,

detecting and receiving first PDCCHs corresponding to all DCI formats in the first MO, and detecting and receiving PDCCHs corresponding to DCI formats different from the DCI formats of the first PDCCHs in the second MO; or,

and detecting and receiving PDCCHs corresponding to all DCI formats in the first MO only, or detecting and receiving PDCCHs corresponding to all DCI formats in the second MO only.

Optionally, if the listening rule is received by the terminal from a network device, the listening rule includes:

and detecting and receiving PDCCHs corresponding to DCI formats appointed by the network equipment in the first MO and the second MO respectively.

Optionally, detecting PDCCHs receiving different scheduling directions in the first MO and the second MO, respectively, includes:

detecting and receiving PDCCH corresponding to an uplink scheduling DCI format in the first MO, and detecting and receiving PDCCH corresponding to a downlink scheduling DCI format in the second MO;

or detecting a PDCCH corresponding to a downlink scheduling DCI format in the first MO, and detecting a PDCCH corresponding to an uplink scheduling DCI format in the second MO.

Optionally, when it is determined that there is no overlap between the first MO and the second MO in the time domain, or it is determined that it is not necessary to detect PDCCHs corresponding to the same DCI format received in the first MO and the second MO, the method further includes:

and detecting and receiving PDCCHs corresponding to all DCI formats in the first MO and the second MO respectively.

Optionally, determining whether the PDCCHs corresponding to the same DCI format need to be detected and received in the first MO and the second MO includes:

Receiving configuration information sent by network equipment, wherein the configuration information comprises first configuration information and second configuration information, the first configuration information is PDCCH corresponding to at least one DCI format which is configured by the network equipment for the first search space and needs to be detected and received, and the second configuration information is PDCCH corresponding to at least one DCI format which is configured by the network equipment for the second search space and needs to be detected and received;

and determining whether PDCCHs corresponding to the same DCI format need to be detected and received in the first MO and the second MO according to the first configuration information and the second configuration information.

In a second aspect, there is provided an apparatus for detecting reception of a PDCCH, the apparatus comprising:

a first determining module, configured to determine whether a first MO corresponding to a first carrier and a second MO corresponding to a second carrier overlap in a time domain, where the first carrier is a scheduled carrier, and the second carrier is a scheduled carrier;

a second determining module, configured to determine whether a first MO in a first search space and a second MO in a second search space overlap in a time domain, where the first search space is a UE-specific search space corresponding to a scheduled carrier, and the second search space is a UE-specific search space corresponding to the scheduled carrier;

The second determining module is further configured to determine, according to a listening rule, a PDCCH corresponding to a received first DCI format detected in the first MO and a PDCCH corresponding to a received second DCI format detected in the second MO when it is determined that PDCCHs corresponding to the same DCI format need to be detected and received in the first MO and the second MO, where the first DCI format and the second DCI format are different.

detecting PDCCHs which are received in different scheduling directions in the first MO and the second MO respectively; or,

the received PDCCH is detected only in the first MO, or is detected only in the second MO.

detecting a PDCCH for receiving uplink scheduling in the first MO, and detecting a PDCCH for receiving downlink scheduling in the second MO;

or detecting a PDCCH for receiving downlink scheduling in the first MO, and detecting a PDCCH for receiving uplink scheduling in the second MO.

Optionally, the apparatus further comprises a processing module configured to:

and detecting and receiving all PDCCHs in the first MO and the second MO respectively.

Optionally, the apparatus further comprises a communication module for:

The second determining module is specifically configured to:

In a third aspect, an electronic device is provided, the electronic device comprising:

a memory for storing program instructions;

and a processor, configured to call the program instructions stored in the memory, and execute the steps included in the method according to any one of the first aspect according to the obtained program instructions.

In a fourth aspect, there is provided a computer readable storage medium storing computer executable instructions for causing a computer to perform the steps comprised by the method of any one of the first aspects.

In a fifth aspect, a computer program product comprising instructions is provided, which when run on a computer causes the computer to perform the method of detecting a received PDCCH described in the various possible implementations described above.

In the embodiment of the application, the terminal determines whether a first MO in a first search space and a second MO in a second search space overlap in a time domain, where the first search space is a UE-specific search space corresponding to a scheduled carrier, and the second search space is a UE-specific search space corresponding to the scheduled carrier. If the first MO and the second MO overlap in the time domain, it is indicated that the first MO and the second MO may need to detect and receive PDCCHs corresponding to the same DCI format in the overlapping time domain, and therefore it is further determined whether or not PDCCHs corresponding to the same DCI format need to be detected and received in the first MO and the second MO, and if it is determined that PDCCHs corresponding to the same DCI format need to be detected and received in the first MO and the second MO, a PDCCH corresponding to the received first DCI format and a PDCCH corresponding to the received second DCI format need to be detected and received in the first MO are determined according to a listening rule, where the first DCI format and the second DCI format are different, that is, the first DCI format and the second DCI format do not include the same DCI format.

In this way, the terminal monitors the formats of DCI in the first MO and the second MO, and detects and receives the PDCCH corresponding to the specific DCI format only in the corresponding MO, so that the PDCCH corresponding to the same DCI cannot be detected and received in the first MO and the second MO at the same time, thereby effectively avoiding unnecessary resource overhead and blind detection overhead, and simultaneously reducing the blocking probability of the PDCCH.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present application.

Fig. 1 is a schematic view of an application scenario provided in an embodiment of the present application;

fig. 2 is a flowchart of a method for detecting a received PDCCH according to an embodiment of the present application;

fig. 3 is a block diagram of a device for detecting a PDCCH according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the present application more apparent, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure. Embodiments and features of embodiments in this application may be combined with each other arbitrarily without conflict. Also, while a logical order is depicted in the flowchart, in some cases, the steps depicted or described may be performed in a different order than presented herein.

The terms first and second in the description and claims of the present application and in the above-described figures are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the term "include" and any variations thereof is intended to cover non-exclusive protection. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus. The term "plurality" in the present application may mean at least two, for example, two, three or more, and embodiments of the present application are not limited.

In addition, the term "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. The character "/" herein generally indicates that the associated object is an "or" relationship unless otherwise specified.

For easy understanding, the technical background of the embodiments of the present invention will be described first.

As described above, when configuring DCI formats for USSs on a scheduling cell and a scheduled cell of a terminal, higher layer signaling of a network device is arbitrarily configured, so that it may be caused that a PDCCH corresponding to the same DCI format needs to be detected and received in an overlapping time domain of USSs corresponding to the scheduling cell and USSs corresponding to the scheduled cell, thereby causing unnecessary resource overhead and blind detection overhead, and increasing blocking probability of the PDCCH. Currently, in order to reduce the resource overhead and the blind detection overhead of the PDCCH, a scheme that the same DCI format cannot be transmitted simultaneously on the scheduled PCell/PSCell and the scheduled SCell is proposed in the discussion process, but no specific details of how to work are yet designed.

In order to avoid unnecessary resource overhead and blind detection overhead, the blocking probability of the PDCCH is reduced. The embodiment of the application provides a scheme of a method for detecting and receiving PDCCH, in the scheme, when a first monitoring time (Monitoring Ocassion, MO) in a USS corresponding to a scheduled carrier and a second MO in the USS corresponding to the scheduled carrier are determined to have time domain overlapping, and PDCCH corresponding to the same DCI format needs to be detected and received, the PDCCH corresponding to the received first DCI format is detected on the first MO in the USS corresponding to the scheduled carrier and the PDCCH corresponding to the received second DCI format is detected on the second MO in the USS corresponding to the scheduled carrier according to a monitoring rule sent by a predefined or network device. The terminal will not detect and receive the PDCCH corresponding to the same DCI format in the USS corresponding to the scheduling cell and the USS corresponding to the scheduled cell at the same time because the first DCI format and the second DCI format are different, thereby effectively reducing the resource overhead and the blind detection overhead and reducing the blocking probability of the PDCCH.

After the design concept of the embodiment of the present application is introduced, some simple descriptions are made below for application scenarios applicable to the technical solution of the embodiment of the present application, and it should be noted that the application scenarios described below are only used to illustrate the embodiment of the present application and are not limiting. In specific implementation, the technical scheme provided by the embodiment of the application can be flexibly applied according to actual needs.

Referring to fig. 1, fig. 1 is an application scenario that can be used in the technical solution of the embodiment of the present application. In this application scenario, a terminal 10 and a network device 11 are included. The terminal 10 may be a cell phone, tablet computer, notebook computer, ultra mobile personal computer (Ultra-Mobile Personal Computer, UMPC), netbook or personal digital assistant (Personal Digital Assistant, PDA), or the like. The network device 11 may be a base station, and the base station may be a commonly used base station, an evolved node b (evolved Node Base station, eNB), a network side device in a 5G system (for example, a next generation base station (next generation Node Base station, gNB) or a transmitting and receiving point (Transmission and Reception Point)) or a cell, etc. It should be noted that the terminal 10 may include a plurality of terminals, and the network device may communicate with the plurality of terminals.

In the embodiment of the present application, the higher layer signaling of the network device 11 needs to set a flag for distinguishing whether the current search space is the common search space (Common Search Space, CSS) or USS when configuring the search space for the terminal. If the currently configured search space is a USS, higher layer signaling of the network device 11 is also required to configure one or more DCI formats within the USS that the terminal 10 is required to monitor and send relevant configuration information to the terminal 10. The configuration information includes first configuration information of a first USS corresponding to a scheduled carrier and second configuration information of a second USS corresponding to the scheduled carrier.

The following describes the technical scheme provided by the embodiment of the application with reference to the attached drawings.

Referring to fig. 2, fig. 2 is a flowchart of a method for detecting a received PDCCH according to an embodiment of the present application. The method flow chart depicted in fig. 2 is as follows:

step 201: the network device sends configuration information to the terminal.

When configuring USSs for a terminal, higher layer signaling of the network device needs to configure one or more DCI formats that the terminal needs to monitor in each USS, and the type of the configured DCI format is arbitrary. Wherein, the terminal-specific DCI format includes: DCI 0_0, DCI 1_0, DCI 0_1, DCI 1_1, DCI 0_2 and DCI 1_2.

After configuring the DCI format type to be monitored in each USS for the terminal, the network device needs to send configuration information to the terminal, where the configuration information includes first configuration information and second configuration information, where the first configuration information is a PDCCH corresponding to at least one DCI format to be detected and received, which is configured by the network device for the first USS (for example, the first configuration information is at least one DCI format to be monitored, which is configured by the network device for the first USS), the second configuration information is a PDCCH corresponding to at least one DCI format to be detected and received, which is configured by the network device for the second USS, and both the first USS and the second USS may include one or more USSs.

After receiving the first configuration information and the second configuration information sent by the network device, the terminal detects and receives a PDCCH corresponding to a DCI format to be monitored in a corresponding USS according to the received configuration information.

For example, the first USS comprises two USSs, uss#1 and uss#2, respectively, and the second USS also comprises two USSs, uss#3 and uss#4, respectively. The higher layer signaling includes DCI 0_0, DCI 1_0 and DCI 0_1 in the configuration of uss#1, DCI 0_1 and DCI 1_1 in the configuration of uss#2, DCI 1_1 and DCI 0_2 in the configuration of uss#3, DCI 0_2 and DCI 1_2 in the configuration of uss#4, and the network device sends configuration information to the terminal after the configuration is completed. The terminal detects and receives PDCCHs corresponding to DCI 0_0, DCI 1_0 and DCI 0_1 in uss#1, detects and receives PDCCHs corresponding to DCI 0_1 and DCI 1_1 in uss#2, detects and receives PDCCHs corresponding to DCI 1_1 and DCI 0_2 in uss#3, and detects and receives PDCCHs corresponding to DCI 0_2 and DCI 1_2 in uss#4 based on the received configuration information.

Step 202: the terminal determines whether there is an overlap in the time domain between the first MO in the first USS and the second MO in the second USS.

In this embodiment of the present application, the first USS is a UE-specific search space corresponding to a scheduled carrier, the second USS is a UE-specific search space corresponding to a scheduled carrier, and MOs in each USS are dispersed, which indicates that the first MO and the second MO overlap in the time domain if the terminal detects that the same listening opportunity exists in the first USS and the second USS, and indicates that the first MO and the second MO do not overlap in the time domain if the terminal does not detect that the same listening opportunity exists in the first USS and the second USS. The terminal performs step 203 when it determines that there is overlap in the time domain between the first MO and the second MO. The terminal performs step 205 when it is determined that there is no overlap in the time domain between the first MO and the second MO.

Step 203: the terminal determines whether PDCCHs corresponding to the same DCI format need to be detected and received in the first MO and the second MO.

In the embodiment of the present application, when the terminal determines that the first MO and the second MO overlap in the time domain, it may need to detect the PDCCH corresponding to the same DCI format in the overlapping listening occasion, and therefore, it is further required to determine whether the PDCCH corresponding to the same DCI format needs to be detected in the first MO and the second MO.

Specifically, as described above, the first configuration information and the second configuration information sent by the network device and received by the terminal include DCI formats that need to be monitored in the first USS and the second USS, when the same DCI format exists in the DCI formats that need to be monitored in the first USS and the second USS, it indicates that PDCCHs corresponding to the same DCI format need to be detected and received in the first MO and the second MO, and step 204 is executed at this time. When the same DCI format does not exist in the DCI formats to be monitored in the first USS and the second USS, it indicates that PDCCHs corresponding to the same DCI format do not need to be detected and received in the first MO and the second MO, and step 205 is executed.

For example, the DCI formats to be monitored configured by the network device for the first USS include DCI 0_0, DCI 1_0, and DCI 0_1, and the DCI formats to be monitored configured for the second USS include DCI 0_1 and DCI 1_1, where, since both the first USS and the second USS need to monitor DCI 0_1 (i.e. detect the PDCCH corresponding to DCI 0_1 in both the first MO and the second MO), the terminal determines that the PDCCH corresponding to the same DCI format needs to be detected and received in the overlapped MO, and thus step 204 is performed. The DCI formats to be monitored configured by the network device for the first USS include DCI 0_0, DCI 1_0 and DCI 0_1, and the DCI formats to be monitored configured for the second USS include DCI 0_2 and DCI 1_1, where the terminal determines that it is not necessary to detect and receive PDCCHs corresponding to the same DCI format in the overlapped MOs because the same DCI format does not exist in the DCI formats to be monitored for the first USS and the second USS, and therefore step 205 is performed.

Step 204: when determining that PDCCHs corresponding to the same DCI need to be detected and received in the first MO and the second MO, the terminal determines PDCCHs corresponding to the received first DCI format detected and received in the first MO according to a monitoring rule, and determines PDCCHs corresponding to the received second DCI format detected and received in the second MO.

In the embodiment of the application, the listening rule may be predefined by a protocol or may be sent by a network device. If the listening rule is predefined by the protocol, the listening rule mainly comprises the following:

first kind

And detecting PDCCHs corresponding to DCI formats received in different scheduling directions in the first MO and the second MO respectively. The method comprises the following steps: detecting and receiving PDCCH corresponding to an uplink scheduling DCI format in a first MO, and detecting and receiving PDCCH corresponding to a downlink scheduling DCI format in a second MO; or detecting and receiving PDCCH corresponding to a downlink scheduling DCI format in a first MO, and detecting and receiving PDCCH corresponding to an uplink scheduling DCI format in a second MO. The first number in the DCI format is used to indicate the scheduling direction, where the first number is "0" when indicating the uplink scheduling direction, and the first number is "1" when indicating the downlink scheduling direction. For example, DCI 0_0 refers to an uplink scheduling direction, and DCI 1_0 refers to a downlink scheduling direction.

In this embodiment of the present application, a DCI format to be monitored configured by a network device for a first USS includes DCI 0_0, DCI 1_0 and DCI 0_1, and a DCI format to be monitored configured for a second USS includes DCI 0_1 and DCI 1_1, where a terminal detects and receives PDCCHs corresponding to DCI 0_0 and DCI 0_1 in a first MO and detects and receives PDCCHs corresponding to DCI 1_1 in a second MO; alternatively, the terminal detects and receives the PDCCH corresponding to DCI 1_0 in the first MO, and detects and receives the PDCCH corresponding to DCI 0_1 in the second MO.

Second kind

Detecting and receiving first PDCCHs corresponding to all DCI formats in a first MO, and detecting and receiving PDCCHs corresponding to DCI formats different from the DCI formats of the first PDCCHs in a second MO; alternatively, the second PDCCH corresponding to all DCI formats is detected and received in the second MO, and the PDCCH corresponding to a DCI format different from the DCI format of the second PDCCH is detected and received in the first MO.

For example, the DCI formats to be monitored configured by the network device for the first USS include DCI 0_0, DCI 1_0, and DCI 0_1, and the DCI formats to be monitored configured for the second USS include DCI 0_0 and DCI 1_2. Since the first USS and the second USS both need to monitor DCI 0_0, the first terminal detects and receives PDCCHs corresponding to DCI 0_0, DCI 1_0 and DCI 0_1 in the first MO and detects and receives PDCCHs corresponding to DCI 1_2 in the second MO; alternatively, the terminal detects and receives PDCCHs corresponding to DCI 0_0 and DCI 1_2 in the second MO, and detects and receives PDCCHs corresponding to DCI 1_0 and DCI 0_1 in the first MO.

Third kind

For example, the DCI formats to be monitored configured by the network device for the first USS include DCI 0_0, DCI 1_0, and DCI 0_1, and the DCI formats to be monitored configured for the second USS include DCI 0_0 and DCI 1_2. The terminal detects and receives PDCCHs corresponding to DCI0_0, DCI1_0 and DCI0_1 only in the first MO; alternatively, the terminal detects and receives PDCCHs corresponding to DCI 0_0 and DCI 1_2 only in the second MO.

The above three methods provide a method for determining that a PDCCH corresponding to a first DCI format is detected and received in a first MO and detecting a PDCCH corresponding to a second DCI format and received in a second MO by a protocol predefined listening rule. The following will provide a method for determining, by a listening rule sent by a receiving network device, that a PDCCH corresponding to a first DCI format is detected and received in a first MO, and that a PDCCH corresponding to a second DCI format is detected and received in a second MO:

and detecting and receiving PDCCHs corresponding to DCI formats appointed by the network equipment in the first MO and the second MO respectively. The network device may specify only DCI formats that need to be monitored in one MO, or may specify DCI formats that need to be monitored in both the first MO and the second MO.

For example, the DCI formats to be monitored configured by the network device for the first USS include DCI 0_0, DCI 1_0, and DCI 0_1, and the DCI formats to be monitored configured for the second USS include DCI 0_0 and DCI 1_2. The terminal detects and receives PDCCHs corresponding to DCI 1_0 and DCI 0_1 in a first MO and detects and receives PDCCHs corresponding to DCI 1_2 in a second MO according to the specification of the network equipment. The network device may instruct to detect and receive PDCCHs corresponding to DCI 1_0 and DCI 0_1 only in the first MO, and may not instruct to detect and receive PDCCHs corresponding to DCI formats in the second MO, and in this case, the terminal needs to detect and receive PDCCHs corresponding to DCI 0_0 and DCI 1_2 in the second MO. When the network device designates the PDCCH corresponding to the DCI format to be detected for the terminal, it is avoided that the same DCI format is designated for the first MO and the second MO.

In this embodiment of the present application, the network device sends the listening rule to the terminal, which may be that the network device carries information of DCI formats specified for the first USS and the second USS in the first configuration information and the second configuration information, or may send the information along with the first configuration information and the second configuration information.

Step 205: and the terminal detects and receives PDCCHs corresponding to all DCI formats in the first MO and the second MO respectively.

And when the terminal determines that the first MO and the second MO do not overlap in the time domain or the terminal does not need to detect and receive PDCCHs corresponding to the same DCI format in the first MO and the second MO, detecting and receiving PDCCHs corresponding to all DCI formats in the first MO and the second MO respectively.

For example, referring to the example in step 201, the higher layer signaling configures uss#1 and uss#2 for the scheduling carrier. Wherein, in uss#1, it is necessary to monitor DCI 0_0, DCI 1_0 and DCI 0_1; the USS #2 needs to monitor DCI 0_1 and DCI 1_1. The higher layer signaling configures USS #3 and USS #4 for the scheduled carrier. In uss#3, it is necessary to monitor DCI 1_1 and DCI 0_2; the USS #4 needs to monitor DCI 0_0 and DCI 1_2.

If the MO specified in uss#1 and the MO specified in uss#3 do not overlap in the time domain, the terminal detects and receives PDCCHs corresponding to DCI 0_0, DCI 1_0, and DCI 0_1 in uss#1, and detects and receives PDCCHs corresponding to DCI 1_1 and DCI 0_2 in uss#3.

If the MO specified in uss#1 and the MO specified in uss#4 do not overlap in the time domain, the terminal detects reception of DCI 0_0, DCI 1_0, and DCI 0_1 in uss#1 and detects reception of DCI 1_0 and DCI 1_2 in uss#4.

If the MO specified in uss#2 and the MO specified in uss#4 overlap in the time domain, the terminal detects a PDCCH corresponding to DCI 0_1 and DCI 1_1 in uss#2 and detects a PDCCH corresponding to DCI 0_0 and DCI 1_2 in uss#4 because the same DCI format does not exist in uss#2 and uss#4.

By the method, the PDCCH corresponding to the same DCI format can be effectively prevented from being detected and received in the same detection time, so that the resource cost and the blind detection cost are effectively reduced, and meanwhile, the blocking probability of the PDCCH is also reduced.

Based on the same inventive concept, the embodiment of the application provides a device for detecting and receiving a PDCCH, which can realize the functions corresponding to the method for detecting and receiving the PDCCH. The means for detecting the reception of PDCCH may be a hardware structure, a software module, or a hardware structure plus a software module. The device for detecting and receiving the PDCCH can be realized by a chip system, and the chip system can be composed of a chip or can contain the chip and other discrete devices. Referring to fig. 3, the apparatus for detecting a PDCCH includes a first determining module 301, a second determining module 302, a processing module 303, and a communication module 304. Wherein:

a first determining module 301, configured to determine whether a first MO corresponding to a first carrier and a second MO corresponding to a second carrier overlap in a time domain, where the first carrier is a scheduled carrier, and the second carrier is a scheduled carrier;

a second determining module 302, configured to determine whether a first MO in a first search space and a second MO in a second search space overlap in a time domain, where the first search space is a UE-specific search space corresponding to a scheduled carrier, and the second search space is a UE-specific search space corresponding to the scheduled carrier;

The second determining module 302 is further configured to determine, according to a listening rule, to detect, when it is determined that PDCCHs corresponding to the same DCI format need to be detected and received in the first MO and the second MO, a PDCCH corresponding to the received first DCI format and a PDCCH corresponding to the received second DCI format are detected and received in the first MO, where the first DCI format and the second DCI format are different.

In one possible implementation, the listening rules are predefined by a protocol; alternatively, the listening rule is received by the terminal from a network device.

In one possible implementation, if the listening rule is predefined by a protocol, the listening rule includes:

In one possible implementation, if the listening rule is received by the terminal from a network device, the listening rule includes:

In one possible implementation manner, detecting PDCCHs receiving different scheduling directions in the first MO and the second MO, respectively, includes:

In a possible implementation manner, the processing module 303 is configured to:

In a possible implementation manner, the communication module 304 is configured to:

The second determining module 302 is specifically configured to:

All relevant contents of each step related to the foregoing embodiment of the method for detecting and receiving a PDCCH may be cited in the functional description of the functional module corresponding to the device for detecting and receiving a PDCCH in the embodiment of the present application, which is not described herein.

The division of the modules in the embodiments of the present application is schematically only one logic function division, and there may be another division manner in actual implementation, and in addition, each functional module in each embodiment of the present application may be integrated in one processor, or may exist separately and physically, or two or more modules may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules.

Based on the same inventive concept, the embodiment of the application provides electronic equipment. Referring to fig. 4, the electronic device includes at least one processor 401 and a memory 402 connected to the at least one processor, in this embodiment, a specific connection medium between the processor 401 and the memory 402 is not limited, and in fig. 4, the connection between the processor 401 and the memory 402 is exemplified by a bus 400, and the bus 400 is shown in a bold line in fig. 4, and a connection manner between other components is only illustrative and not limited. The bus 400 may be divided into an address bus, a data bus, a control bus, etc., and is represented by only one thick line in fig. 4 for ease of illustration, but does not represent only one bus or one type of bus.

In the embodiment of the present application, the memory 402 stores instructions executable by the at least one processor 401, and the at least one processor 401 may perform the steps included in the aforementioned method for detecting the received PDCCH by executing the instructions stored in the memory 402.

The processor 401 is a control center of the electronic device, and may use various interfaces and lines to connect various parts of the entire electronic device, and by executing or executing instructions stored in the memory 402 and invoking data stored in the memory 402, various functions of the electronic device and processing data, so as to monitor the electronic device as a whole. Alternatively, the processor 401 may include one or more processing units, and the processor 401 may integrate an application processor and a modem processor, wherein the application processor mainly processes an operating system and an application program, etc., and the modem processor mainly processes wireless communication. It will be appreciated that the modem processor described above may not be integrated into the processor 401. In some embodiments, processor 401 and memory 402 may be implemented on the same chip, and in some embodiments they may be implemented separately on separate chips.

The processor 401 may be a general purpose processor such as a Central Processing Unit (CPU), digital signal processor, application specific integrated circuit, field programmable gate array or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, which may implement or perform the methods, steps and logic blocks disclosed in the embodiments of the present application. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method for detecting the received PDCCH disclosed in connection with the embodiments of the present application may be directly embodied as a hardware processor executing the method, or may be executed by a combination of hardware and software modules in the processor.

Memory 402 is a non-volatile computer-readable storage medium that can be used to store non-volatile software programs, non-volatile computer-executable programs, and modules. The Memory 402 may include at least one type of storage medium, which may include, for example, flash Memory, hard disk, multimedia card, card Memory, random access Memory (Random Access Memory, RAM), static random access Memory (Static Random Access Memory, SRAM), programmable Read-Only Memory (Programmable Read Only Memory, PROM), read-Only Memory (ROM), charged erasable programmable Read-Only Memory (Electrically Erasable Programmable Read-Only Memory), magnetic Memory, magnetic disk, optical disk, and the like. Memory 402 is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to such. The memory 402 in the present embodiment may also be circuitry or any other device capable of implementing a memory function for storing program instructions and/or data.

By programming the processor 401, the code corresponding to the method for detecting and receiving PDCCH described in the foregoing embodiment may be cured into the chip, so that the chip can execute the steps of the foregoing method for detecting and receiving PDCCH during operation, and how to program the processor 401 is a technology known to those skilled in the art, which is not repeated here.

Based on the same inventive concept, the embodiments of the present application also provide a computer-readable storage medium storing computer instructions that, when run on a computer, cause the computer to perform the steps of the method of detecting a received PDCCH as described above.

In some possible embodiments, aspects of the method of detecting a received PDCCH provided herein may also be implemented in the form of a program product comprising program code for causing a detection device to perform the steps in the method of detecting a received PDCCH according to the various exemplary embodiments of the present application described herein above when the program product is run on an electronic device.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims

1. A method for detecting a received PDCCH, applied to a terminal, the method comprising:

2. The method of claim 1, wherein the listening rule is protocol predefined; alternatively, the listening rule is received by the terminal from a network device.

3. The method of claim 2, wherein if the listening rule is protocol predefined, the listening rule comprises:

4. The method of claim 2, wherein if the listening rule is received by the terminal from a network device, the listening rule comprises:

5. The method of claim 3, wherein detecting PDCCHs corresponding to receiving different scheduling DCI formats in the first MO and the second MO, respectively, comprises:

6. The method of claim 1, wherein upon determining that there is no overlap in the time domain for the first MO and the second MO, or determining that there is no need to detect PDCCHs within the first MO and the second MO that correspond to the same DCI format, the method further comprises:

7. The method of claim 1, wherein determining whether detection of PDCCHs corresponding to the same DCI format received in the first MO and the second MO is required comprises:

8. An apparatus for detecting a received PDCCH, applied to a terminal, comprising:

9. The apparatus of claim 8, wherein the listening rule is protocol predefined; alternatively, the listening rule is received by the terminal from a network device.

10. The apparatus of claim 9, wherein if the listening rule is protocol predefined, the listening rule comprises:

detecting a received PDCCH in the first MO or detecting a received PDCCH in the second MO.

11. The apparatus of claim 9, wherein if the listening rule is received by the terminal from a network device, the listening rule comprises:

12. The apparatus of claim 10, wherein detecting reception of PDCCHs of different scheduling directions within the first MO and the second MO, respectively, comprises:

13. The apparatus of claim 8, further comprising a processing module to: and when the first determining module determines that the first MO and the second MO do not overlap in the time domain, or when the second determining module determines that the PDCCHs corresponding to the same DCI format do not need to be detected and received in the first MO and the second MO, detecting and receiving all PDCCHs in the first MO and the second MO respectively.

14. The apparatus of claim 8, wherein the apparatus further comprises a communication module to: receiving configuration information sent by network equipment, wherein the configuration information comprises first configuration information and second configuration information, the first configuration information is PDCCH corresponding to at least one DCI format which is configured by the network equipment for the first search space and needs to be detected and received, and the second configuration information is PDCCH corresponding to at least one DCI format which is configured by the network equipment for the second search space and needs to be detected and received;

the second determining module is specifically configured to:

15. An electronic device, comprising:

a memory for storing program instructions;

a processor for invoking program instructions stored in said memory and for performing the steps comprised in the method according to any of claims 1-7 in accordance with the obtained program instructions.

16. A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program comprising program instructions which, when executed by a computer, cause the computer to perform the method of any of claims 1-7.