CN116527204B - Downlink control information transmission method and device and electronic equipment - Google Patents

Downlink control information transmission method and device and electronic equipment Download PDF

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Publication number
CN116527204B
CN116527204B CN202310780885.0A CN202310780885A CN116527204B CN 116527204 B CN116527204 B CN 116527204B CN 202310780885 A CN202310780885 A CN 202310780885A CN 116527204 B CN116527204 B CN 116527204B
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dci
search space
matched
public
user search
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CN202310780885.0A
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CN116527204A (en
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高婷婷
李文情
浦学东
张陈方
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New H3C Technologies Co Ltd
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New H3C Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0036—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver
    • H04L1/0038—Blind format detection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H04W72/232—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the physical layer, e.g. DCI signalling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The application provides a downlink control information transmission method and device and electronic equipment. When Downlink Control Information (DCI) is blindly detected in a public search space, judging whether the DCI blindly detected in the public search space is the DCI matched with the public search space, if so, continuing to analyze and execute the DCI, otherwise, discarding the DCI. When Downlink Control Information (DCI) is blindly detected in the user search space, judging whether the DCI blindly detected by the user search space is the DCI matched with the user search space, if so, continuing to analyze and execute the DCI, otherwise, discarding the DCI, wherein the DCI matched with the public search space is different from the DCI matched with the user search space. The method can avoid access failure caused by blind detection of the same DCI in the public search space and the user search space by the terminal.

Description

Downlink control information transmission method and device and electronic equipment
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method and apparatus for transmitting downlink control information, and electronic device.
Background
Currently, when a base station needs to invoke a physical downlink control channel (Physical downlink control channel, PDCCH), the base station sends downlink control information (Downlink Control Information, DCI) to a corresponding target search space, such as a common search space (Common Search Space, CSS) and a user search space (UE-specific Search Space, USS), through an air interface based on the requirement. However, since the public search space and the user search space may overlap, it may happen that the terminal blindly detects the same DCI in both the public search space and the user search space when blindly detecting. However, because the configurations corresponding to the public search space and the user search space are different, if the target search space is the public search space and the terminal analyzes and executes DCI blindly detected by the user search space, the terminal access failure may occur, and vice versa.
Disclosure of Invention
In view of this, the present application provides a downlink control information transmission method and apparatus, and an electronic device, so as to avoid access failure caused by blind detection of the same DCI in a public search space and a user search space by a terminal.
The embodiment of the application provides a downlink control information transmission method, which is applied to a terminal and comprises the following steps:
when Downlink Control Information (DCI) is blindly detected in the public search space, judging whether the DCI blind-detected by the public search space is the DCI matched with the public search space, if the DCI blind-detected by the public search space is the DCI matched with the public search space, continuing to analyze and execute the DCI blind-detected by the public search space;
when DCI is blindly detected in the user search space, judging whether the DCI blindly detected by the user search space is the DCI matched with the user search space, if the DCI blindly detected by the user search space is the DCI matched with the user search space, continuously analyzing and executing the DCI blindly detected by the user search space;
wherein the DCI matched by the common search space is different from the DCI matched by the user search space.
The embodiment of the application also provides a downlink control information transmission method which is applied to the base station and comprises the following steps:
When a Physical Downlink Control Channel (PDCCH) is required to be called in a public search space, generating DCI matched with the public search space and issuing the DCI to the public search space through an air interface so as to be executed according to the steps in the method when a terminal blindly detects the DCI in the public search space;
when the PDCCH is required to be called in the user search space, generating DCI matched with the user search space and issuing the DCI to the user search space through an air interface, so that the terminal can execute the steps in the method when blindly detecting the DCI in the user search space;
wherein the DCI matched by the common search space is different from the DCI matched by the user search space.
The embodiment of the application also provides a downlink control information transmission device, which is applied to the terminal and comprises: the first judging module is configured to judge whether the DCI blind-detected by the public search space is the DCI matched with the public search space when the downlink control information DCI is blind-detected in the public search space, and if the DCI blind-detected by the public search space is the DCI matched with the public search space, continuously analyzing and executing the DCI blind-detected by the public search space;
the second judging module is configured to judge whether the DCI blind-detected by the user search space is the DCI matched with the user search space when the DCI is blind-detected in the user search space, and continuously analyze and execute the DCI blind-detected by the user search space if the DCI blind-detected by the user search space is the DCI matched with the user search space;
Wherein the DCI matched by the common search space is different from the DCI matched by the user search space.
The embodiment of the application also provides a downlink control information transmission device which is applied to the base station and comprises:
the first generation module is configured to generate DCI matched with the public search space and issue the DCI to the public search space through an air interface when the physical downlink control channel PDCCH is required to be called in the public search space, so that the terminal can perform the steps in the method when blindly detecting the DCI in the public search space;
the second generation module is configured to generate DCI matched with the user search space and issue the DCI to the user search space through an air interface when the PDCCH is required to be called in the user search space, so that the terminal can execute the steps in the method when blind detection of the DCI in the user search space is performed;
wherein the DCI matched by the common search space is different from the DCI matched by the user search space.
The embodiment of the application also provides electronic equipment, which comprises: a processor and a memory for storing computer program instructions which, when executed by the processor, cause the processor to perform the steps of the method as above.
Embodiments of the present application also provide a machine-readable storage medium storing computer program instructions which, when executed, enable the steps of the method as above to be carried out.
As can be seen from the above technical solutions, in the embodiment of the present application, the terminal only completely parses and executes the DCI matching the current search space, and does not completely parse and execute the DCI not matching the current search space. When the terminal blindly detects the same DCI in both the public search space and the user search space, if the target search space of the base station is the public search space, the terminal only can completely analyze and execute the DCI matched with the public search space blindly detected in the public search space, and can not completely analyze and execute the DCI blindly detected in the user search space and not matched with the user search space, and vice versa. Therefore, the embodiment of the application can ensure that the access failure caused by blind detection of the same DCI in the public search space and the user search space by the terminal is avoided.
Drawings
Fig. 1 is a flow chart illustrating a downlink control information transmission method according to an exemplary embodiment of the present application.
Fig. 2A is a schematic diagram of DCI provided in the prior art.
Fig. 2B is a schematic diagram illustrating the addition of a search space type indication field to the DCI illustrated in fig. 2A.
Fig. 3 is a flowchart illustrating a downlink control information transmission method according to another exemplary embodiment of the present application.
Fig. 4 is a schematic diagram of a basic hardware structure of a device where downlink control information is transmitted according to an embodiment of the present application.
Fig. 5 is a schematic structural diagram of a downlink control information transmission device according to an embodiment of the present application.
Fig. 6 is a schematic structural diagram of a downlink control information transmission device according to another embodiment of the present application.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings identify the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the application. Rather, they are merely examples of apparatus and methods consistent with aspects of the application as detailed in the accompanying claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.
In order to better illustrate the present solution, the following terms will now be explained.
And the base station schedules uplink data and/or downlink data of each terminal, and stores scheduling information (such as occupied time-frequency resources, modulation coding modes, power adjustment and the like) in the DCI.
And the PDCCH is used for bearing downlink control information DCI.
The search space, the base station may send DCI of each terminal on a determined time/frequency domain resource region, which is generally referred to as a search space, and is also a detection range in which the terminal performs blind detection on the downlink PDCCH.
The search space includes a common search space mainly used for transmitting control information related to cell-level common information (e.g., paging messages, broadcast messages, etc.) and a dedicated search space mainly used for transmitting control information related to uplink and downlink data of the terminal.
DCI formats (formats), in which DCI is divided into different formats according to the type of indication information, each Format corresponds to a DCI size or parsing scheme.
It should be noted that, in the application scenario related to the present application, the common search space and the user search space adopt the same DCI format, and the specific DCI format is not specifically limited.
The DCI size, which may also be referred to as the Payload (Payload) size of the DCI format. Specifically, the DCI size is understood as the number of bits of the DCI, and the number of bits of the DCI refers to the number of bits of the entire DCI that the terminal needs to perform blind detection. It should be understood that if the truncation operation is performed on the DCI, the bit number of the DCI is equal to the information bit number of the DCI minus the number of bits to be truncated; if the padding operation is performed on the DCI, the bit number of the DCI is equal to the information bit number of the DCI plus the padded bit number.
Fig. 1 is a flow chart illustrating a downlink control information transmission method according to an exemplary embodiment of the present application. The downlink control information transmission method may be performed by a base station, as shown in fig. 1, and includes the following steps.
S110, when the PDCCH is called in the public search space, DCI matched with the public search space is generated, and the DCI is issued to the public search space through an air interface so as to be used for blind detection in the public search space by the terminal.
And S120, when the PDCCH is called in the user search space, generating DCI matched with the user search space, and issuing the DCI to the user search space through an air interface so as to enable the terminal to blindly detect in the user search space.
In this embodiment, DCI matched with a common search space is different from DCI matched with a user search space, and in order to realize that DCI matched with a common search space is different from DCI matched with a user search space, there are many implementation manners in the specific implementation of this embodiment, and two implementation manners of these implementation manners will be described by way of two embodiment examples, which are not described herein again.
Thus, the flow shown in fig. 1 is completed.
Through the effect achieved by the flow in fig. 1, by distinguishing the difference between the DCI matched with the public search space and the DCI matched with the user search space, the terminal can distinguish whether the DCI blind-detected is the DCI matched with the public search space or the DCI matched with the user search space during blind detection, so that the situation that the terminal cannot access because the DCI blind-detected in the current search space is still completely resolved and executed in the current search space is avoided.
The following exemplifies the DCI matched with the common search space and the DCI matched with the user search space:
example 1:
in this embodiment 1, the format of DCI defined in a protocol such as 3GPP protocol at 38212 7.3.1.1.1 is modified. Specifically, as shown in connection with fig. 2A and 2B, the improvement is specifically: a search space type indication field (Search space type indication field) is added to the DCI.
The search space type indicates a field for indicating whether the current DCI is a DCI matching a common search space or a DCI matching a user search space. Alternatively, for example, the domain value of the search space type indication field may be set to a first value, such as 0, to indicate that the current DCI is the DCI of the common search space match, for example, the domain value of the search space type indication field may be set to a second value, such as 1, to indicate that the current DCI is the DCI of the user search space match.
Optionally, the size of the DCI matched with the common search space is the same as the size of the DCI matched with the user search space, and the domain width of the indication domain of adding the search space type in the DCI may be 1 bit.
As an embodiment, in this embodiment, the DCI matching the common search space and the DCI matching the user search space may be distinguished by adding a search space type indication field and setting a field value of the search space type indication field.
Example 2:
in this embodiment 2, the size of DCI defined in a protocol such as 3GPP protocol at 38212 7.3.1.1.1 is modified. Specifically, the improvement is specifically: adding several placeholders, such as 1 placeholder, to the DCI increases the size value of the DCI. Optionally, a number of placeholders may be added at the end of the DCI.
The placeholder serves the purpose of increasing the size value of the DCI indicating whether the current DCI is a DCI matching the common search space or a DCI matching the user search space. Optionally, for DCI of a certain format, when the DCI size value of the protocol constraint is 38 bits, the size value of the current DCI is 38 bits, which indicates that the current DCI is a DCI matched with the common search space. And if the size value of the current DCI is 39 bits, indicating that the current DCI is the DCI with the matched user search space.
Since the 3GPP protocol specifies different DCI payload sizes detected in each slot and each DCI format supports at most 4 kinds of payloads, the above embodiment 2 is implemented while the number of Cell-level DCI sizes supported by the terminal is required to be increased from 4 to 5, and the number of Cell-radio network temporary identifier (C-RNTI) scrambled DCI sizes is required to be increased from 3 to 4.
As an embodiment, in this embodiment, the DCI size value may be changed by adding a placeholder to achieve distinguishing between DCI matched with the common search space and DCI matched with the user search space.
The DCI matched with the common search space and the DCI matched with the user search space are described above by way of example, and the method provided by the embodiment of the present application is described below in terms of terminal stations:
Fig. 3 is a flowchart illustrating a downlink control information transmission method according to another exemplary embodiment of the present application. The downlink control information transmission method may be performed by a terminal, as shown in fig. 3, and includes the following steps.
S310, when downlink control information DCI is blindly detected in the public search space, judging whether the DCI blindly detected by the public search space is the DCI matched with the public search space.
Specifically, when downlink control information DCI is blindly detected in the common search space, the terminal analyzes each domain of the DCI, and determines whether the DCI blindly detected in the common search space is DCI matched with the common search space.
Since the specific ways of implementing the DCI matched with the public search space and the DCI matched with the user search space are different, the specific ways of judging whether the DCI blind-detected by the public search space is the DCI matched with the public search space are also different, and two implementation ways will be described by two embodiments in an exemplary manner, which is not described herein again.
If the execution result of S310 is yes, the following step S330 is executed, and if the execution result of S310 is no, the following step S330 is executed.
And S320, continuing to analyze and execute the DCI blind-detected by the public search space.
Step S320 is executed when the DCI blind-detected in the common search space is the DCI matched with the common search space, and the terminal continues to analyze and execute the DCI, so that interaction with the base station is enabled.
S330, discarding the DCI blind-detected by the public search space.
Step S320 is executed when the DCI blind-detected in the common search space is not the DCI matched with the common search space, and the terminal discards the DCI blind-detected in the common search space, and does not continue to parse and execute the DCI.
S340, when the DCI is blindly detected in the user search space, judging whether the DCI blindly detected by the user search space is the DCI matched with the user search space.
Specifically, when downlink control information DCI is blindly detected in the user search space, the terminal analyzes each domain of the DCI, and determines whether the DCI blindly detected in the user search space is DCI matched with the user search space.
Likewise, there are many implementations of the specific implementation of step S340, and two implementations of these are described below by way of two exemplary embodiments, which are not repeated here.
If the result of the execution of S340 is yes, the following step S350 is executed, and if the result of the execution of S340 is no, the following step S360 is executed.
And S350, continuing to analyze and execute the DCI blind-detected by the user search space.
S360, discarding DCI blind-detected by the user search space.
Thus, the flow shown in fig. 3 is completed.
With the effect achieved by the flow of fig. 3, only DCI matching the current search space will be completely parsed and executed by the terminal, and DCI not matching the current search space will not be completely parsed and executed. When the terminal blindly detects the same DCI in both the public search space and the user search space, if the target search space of the base station is the public search space, the terminal only can completely analyze and execute the DCI matched with the public search space blindly detected in the public search space, and can not completely analyze and execute the DCI blindly detected in the user search space and not matched with the user search space, and vice versa. Therefore, the embodiment of the application can ensure that the access failure caused by blind detection of the same DCI in the public search space and the user search space by the terminal is avoided.
The following describes, by way of example, whether the DCI blind-detected in the common search space is the DCI matched with the common search space in step S310:
example 3:
in embodiment 3, DCI matched with the common search space and DCI matched with the user search space are obtained in the manner described in embodiment 1 above. Specifically, the search space type in DCI to which the common search space is matched indicates that the domain value of the domain is a first value, such as 0. The search space type in the DCI to which the user search space is matched indicates that the domain value of the domain is a second value, for example, 1, and the first value is not equal to the second value.
Judging whether the DCI blind-detected by the public search space is the DCI matched by the public search space can be performed as judging whether the domain value of the search space type indication domain in the DCI blind-detected by the public search space is a first value, if so, determining that the DCI blind-detected by the public search space is the DCI matched by the public search space, otherwise, determining that the DCI blind-detected by the public search space is not the DCI matched by the public search space.
In this embodiment, as an embodiment, in this embodiment, the purpose of determining whether the DCI blind-detected by the common search space is the DCI matched by the common search space may be achieved by determining whether the domain value of the search space type indication field of the DCI is the first value.
Example 4:
in embodiment 4, DCI matched with the common search space and DCI matched with the user search space are obtained in the manner described in embodiment 2 above. Specifically, the size of DCI matched by the common search space is different from the size of DCI matched by the user search space. The size of the DCI matched by the common search space is a first size value, and the size of the DCI matched by the user search space is a second size value.
Determining whether the DCI blind-detected by the public search space is the DCI matched by the public search space may be performed to determine whether the size of the DCI blind-detected by the public search space is a first size value, if so, determining that the DCI blind-detected by the public search space is the DCI matched by the public search space, otherwise, determining that the DCI blind-detected by the public search space is not the DCI matched by the public search space.
Alternatively, in this embodiment, as an embodiment, the purpose of determining whether the DCI blind-detected in the common search space is the DCI matched in the common search space may be achieved by determining whether the DCI size blind-detected in the common search space is the first size value.
The above describes by way of example whether the DCI blind-detected in the common search space in step S310 is the DCI matched with the common search space.
An example of determining whether the DCI blind-detected by the user search space is the DCI matched by the user search space in step S340 will be described below.
Example 5:
in embodiment 5, DCI matched with the common search space and DCI matched with the user search space are obtained in the manner described in embodiment 1 above. Specifically, the search space type in DCI to which the common search space is matched indicates that the domain value of the domain is a first value, such as 0. The search space type in the DCI to which the user search space is matched indicates that the domain value of the domain is a second value, for example, 1, and the first value is not equal to the second value.
Judging whether the DCI blind-detected by the user search space is the DCI matched by the user search space can be performed as judging whether the domain value of the search space type indication domain in the DCI blind-detected by the user search space is a second value, if so, determining that the DCI blind-detected by the user search space is the DCI matched by the user search space, otherwise, determining that the DCI blind-detected by the user search space is not the DCI matched by the user search space.
Alternatively, in this embodiment, as an embodiment, the purpose of determining whether the domain value of the search space type indication field of the DCI blind-detected by the user search space is the second value may be achieved by determining whether the domain value is the DCI matched by the user search space.
Example 6:
in embodiment 6, DCI matched with the common search space and DCI matched with the user search space are obtained in the manner described in embodiment 2 above. Specifically, the size of DCI matched by the common search space is different from the size of DCI matched by the user search space. The size of the DCI matched by the common search space is a first size value, and the size of the DCI matched by the user search space is a second size value.
Determining whether the DCI blind-detected by the user search space is the DCI matched by the user search space may be performed to determine whether the size of the DCI blind-detected by the user search space is a second size value, if so, determining that the DCI blind-detected by the user search space is the DCI matched by the user search space, otherwise, determining that the DCI blind-detected by the user search space is not the DCI matched by the user search space.
Alternatively, in this embodiment, as an embodiment, the purpose of determining whether the DCI blind-detected by the user search space is the DCI matched by the user search space may be achieved by determining whether the size of the DCI is the second size value.
The above describes, as an example, whether the DCI blind-detected in the user search space in step S340 is the DCI matched with the user search space.
The application also provides an embodiment of the downlink control information transmission device corresponding to the embodiment of the downlink control information transmission method.
The embodiment of the application for transmitting the downlink control information can be applied to terminals and base stations. The apparatus embodiments may be implemented by software, or may be implemented by hardware or a combination of hardware and software. Taking a software implementation as an example, the device in a logic sense is formed by reading corresponding computer program instructions in a nonvolatile memory into a memory by a processor of a device where the device is located for operation. In terms of hardware, as shown in fig. 4, a hardware structure diagram of a device where downlink control information is transmitted according to the present application is shown, and in addition to the processor, the memory, the network interface, and the nonvolatile memory shown in fig. 4, the device where the apparatus is located in the embodiment generally includes other hardware according to the actual function of the device, which is not described herein again.
Fig. 5 is a schematic structural diagram of a downlink control information transmission device according to an embodiment of the present application. The downlink control information transmission 500 provided by the embodiment of the application is applied to a terminal. As shown in fig. 5, the downlink control information transmission apparatus 500 includes a first determining module 510 and a second determining module 520.
A first judging module 510 configured to judge whether the DCI blind-detected by the common search space is the DCI matched with the common search space when the downlink control information DCI is blind-detected in the common search space, and if the DCI blind-detected by the common search space is the DCI matched with the common search space, continuously analyzing and executing the DCI blind-detected by the common search space;
a second judging module 520 configured to judge whether the DCI blind-detected by the user search space is the DCI matched with the user search space when the DCI is blind-detected in the user search space, and if the DCI blind-detected by the user search space is the DCI matched with the user search space, continuously analyzing and executing the DCI blind-detected by the user search space;
wherein the DCI matched by the common search space is different from the DCI matched by the user search space.
In an embodiment of the present application, any DCI is configured with a search space type indication field; the domain value of the search space type indication domain in the DCI matched with the public search space is a first value, the domain value of the search space type indication domain in the DCI matched with the user search space is a second value, and the first value and the second value are unequal;
the first determining module 510 is further configured to determine whether a domain value of a search space type indication field in DCI blind detected by the public search space is a first value, if so, determine that the DCI blind detected by the public search space is DCI matched with the public search space, otherwise, determine that the DCI blind detected by the public search space is not DCI matched with the public search space;
The second determining module 520 is further configured to determine whether a domain value of the search space type indication field in the DCI blind-detected by the user search space is a second value, if so, determine that the DCI blind-detected by the user search space is the DCI matched by the user search space, otherwise, determine that the DCI blind-detected by the user search space is not the DCI matched by the user search space.
In an embodiment of the present application, the size of DCI matched with the common search space is the same as the size of DCI matched with the user search space; the search space type indicates that the domain width of the domain is 1 bit.
In an embodiment of the present application, the size of DCI matched with the common search space is different from the size of DCI matched with the user search space; the size of DCI matched with the public search space is a first size value, and the size of DCI matched with the user search space is a second size value;
the first determining module 510 is further configured to determine whether the size of the DCI blind detected in the public search space is a first size value, if yes, determine that the DCI blind detected in the public search space is the DCI matched in the public search space, and if not, determine that the DCI blind detected in the public search space is not the DCI matched in the public search space;
The second determining module 520 is further configured to determine whether the size of the DCI blind-detected by the user search space is a second size value, if so, determine that the DCI blind-detected by the user search space is the DCI matched by the user search space, otherwise, determine that the DCI blind-detected by the user search space is not the DCI matched by the user search space.
In an embodiment of the present application, the first size value is a DCI size of a protocol constraint, and the second size value is greater than the first size value.
Fig. 6 is a schematic structural diagram of a downlink control information transmission device according to an embodiment of the present application. The downlink control information transmission device 600 provided by the embodiment of the application is applied to a base station. As shown in fig. 6, the downlink control information transmission apparatus 600 includes a first generating module 610 and a second generating module 620.
A first generating module 610, configured to generate DCI matched with the common search space when the physical downlink control channel PDCCH needs to be invoked in the common search space, and issue the DCI to the common search space through an air interface for blind detection in the common search space by the terminal;
a second generating module 620, configured to generate DCI matched with the user search space when the PDCCH is invoked in the user search space, and issue the DCI to the user search space through an air interface for blind detection in the user search space by the terminal;
Wherein the DCI matched by the common search space is different from the DCI matched by the user search space.
In an embodiment of the present application, any DCI is configured with a search space type indication field; the domain value of the search space type indication domain in the DCI matched with the public search space is a first value, the domain value of the search space type indication domain in the DCI matched with the user search space is a second value, and the first value and the second value are unequal;
in an embodiment of the present application, the size of DCI matched with the common search space is different from the size of DCI matched with the user search space; the size of the DCI matched by the common search space is a first size value, and the size of the DCI matched by the user search space is a second size value.
For the device embodiments, reference is made to the description of the method embodiments for the relevant points, since they essentially correspond to the method embodiments. 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 purposes of the present application. Those of ordinary skill in the art will understand and implement the present application without undue burden.
Embodiments of the subject matter and the functional operations described in this specification can be implemented in: digital electronic circuitry, tangibly embodied computer software or firmware, computer hardware including the structures disclosed in this specification and structural equivalents thereof, or a combination of one or more of them. Embodiments of the subject matter described in this specification can be implemented as one or more computer programs, i.e., one or more modules of computer program instructions encoded on a tangible, non-transitory program carrier for execution by, or to control the operation of, data processing apparatus. Alternatively or additionally, the program instructions may be encoded on a manually-generated propagated signal, e.g., a machine-generated electrical, optical, or electromagnetic signal, that is generated to encode and transmit information to suitable receiver apparatus for execution by data processing apparatus. The computer storage medium may be a machine-readable storage device, a machine-readable storage substrate, a random or serial access memory device, or a combination of one or more of them.
The processes and logic flows described in this specification can be performed by one or more programmable computers executing one or more computer programs to perform corresponding functions by operating on input data and generating output. The processes and logic flows can also be performed by, and apparatus can also be implemented as, special purpose logic circuitry, e.g., an FPGA (field programmable gate array) or an ASIC (application-specific integrated circuit).
Computers suitable for executing computer programs include, for example, general purpose and/or special purpose microprocessors, or any other type of central processing unit. Typically, the central processing unit will receive instructions and data from a read only memory and/or a random access memory. The essential elements of a computer include a central processing unit for carrying out or executing instructions and one or more memory devices for storing instructions and data. Typically, a computer will also include, or be operatively coupled to receive data from or transfer data to, or both, one or more mass storage devices for storing data, e.g., magnetic, magneto-optical disks, or optical disks, etc. However, a computer does not have to have such a device. Furthermore, the computer may be embedded in another device, such as a mobile phone, a Personal Digital Assistant (PDA), a mobile audio or video player, a game console, a Global Positioning System (GPS) receiver, or a portable storage device such as a Universal Serial Bus (USB) flash drive, to name a few.
Computer readable media suitable for storing computer program instructions and data include all forms of non-volatile memory, media and memory devices including, for example, semiconductor memory devices (e.g., EPROM, EEPROM, and flash memory devices), magnetic disks (e.g., internal hard disk or removable disks), magneto-optical disks, and CD-ROM and DVD-ROM disks. The processor and the memory can be supplemented by, or incorporated in, special purpose logic circuitry.
While this specification contains many specific implementation details, these should not be construed as limitations on the scope of any invention or of what may be claimed, but rather as descriptions of features of specific embodiments of particular inventions. Certain features that are described in this specification in the context of separate embodiments can also be implemented in combination in a single embodiment. On the other hand, the various features described in the individual embodiments may also be implemented separately in the various embodiments or in any suitable subcombination. Furthermore, although features may be acting in certain combinations and even initially claimed as such, one or more features from a claimed combination can in some cases be excised from the combination, and the claimed combination may be directed to a subcombination or variation of a subcombination.
Similarly, although operations are depicted in the drawings in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. In some cases, multitasking and parallel processing may be advantageous. Moreover, the separation of various system modules and components in the embodiments described above should not be understood as requiring such separation in all embodiments, and it should be understood that the described program components and systems can generally be integrated together in a single software product or packaged into multiple software products.
Thus, particular embodiments of the subject matter have been described. Other embodiments are within the scope of the following claims. In some cases, the actions recited in the claims can be performed in a different order and still achieve desirable results. Furthermore, the processes depicted in the accompanying drawings are not necessarily required to be in the particular order shown, or sequential order, to achieve desirable results. In some implementations, multitasking and parallel processing may be advantageous.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather to enable any modification, equivalent replacement, improvement or the like to be made within the spirit and principles of the application.

Claims (11)

1. A downlink control information transmission method, which is applied to a terminal, the method comprising:
when Downlink Control Information (DCI) is blindly detected in a public search space, judging whether the DCI blind-detected by the public search space is the DCI matched with the public search space, if the DCI blind-detected by the public search space is the DCI matched with the public search space, continuing to analyze and execute the DCI blind-detected by the public search space;
When DCI is blindly detected in a user search space, judging whether the DCI blind-detected by the user search space is the DCI matched with the user search space, if the DCI blind-detected by the user search space is the DCI matched with the user search space, continuing to analyze and execute the DCI blind-detected by the user search space;
wherein the DCI matched with the public search space is different from the DCI matched with the user search space; the DCI format of the DCI matched with the public search space is the same as that of the DCI matched with the user search space, and the content of the DCI code stream of the DCI matched with the public search space is different from that of the DCI matched with the user search space under the same DCI format;
the common search space and the user search space are partially overlapping;
any DCI is configured with a search space type indication field, the DCI matched with the common search space and the DCI matched with the user search space are obtained by configuring the search space type indication field in the DCI defined by a protocol, and are distinguished by a domain value of the search space type indication field;
or alternatively, the process may be performed,
the DCI matched by the public search space and/or the DCI matched by the user search space are obtained by adding a placeholder to the DCI defined by a protocol, the size of the DCI matched by the public search space is different from the size of the DCI matched by the user search space, and the DCI matched by the public search space and the DCI matched by the user search space are distinguished by a DCI size value.
2. The method of claim 1, wherein when the DCI to which the common search space is matched and the DCI to which the user search space is matched are distinguished by a domain value of a search space type indication field, the domain value of the search space type indication field in the DCI to which the common search space is matched is a first value, the domain value of the search space type indication field in the DCI to which the user search space is matched is a second value, and the first value is not equal to the second value;
the determining whether the DCI blind-detected by the public search space is the DCI matched by the public search space includes: judging whether the domain value of a search space type indication domain in the DCI blind-detected by the public search space is the first value, if so, determining that the DCI blind-detected by the public search space is the DCI matched by the public search space, otherwise, determining that the DCI blind-detected by the public search space is not the DCI matched by the public search space;
the determining whether the DCI blind-detected by the user search space is the DCI matched with the user search space includes: judging the threshold value of a search space type indication domain in the DCI blindly detected by the user search space
And if the DCI is the second value, determining that the DCI blind-detected by the user search space is the DCI matched with the user search space, otherwise, determining that the DCI blind-detected by the user search space is not the DCI matched with the user search space.
3. The method of claim 2, wherein the size of the DCI to which the common search space matches is the same as the size of the DCI to which the user search space matches;
the search space type indicates that the domain width of the domain is 1 bit.
4. The method of claim 1, wherein when the DCI to which the common search space matches and the DCI to which the user search space matches are distinguished by DCI size values, the size of the DCI to which the common search space matches is a first size value and the size of the DCI to which the user search space matches is a second size value; the first size value is a DCI size of the protocol constraint, and the second size value is greater than the first size value;
wherein, the determining whether the DCI blind-detected by the public search space is the DCI matched by the public search space includes: judging whether the size of the DCI blind-detected by the public search space is the first size value, if so, determining that the DCI blind-detected by the public search space is the DCI matched by the public search space, otherwise, determining that the DCI blind-detected by the public search space is not the DCI matched by the public search space;
The determining whether the DCI blind-detected by the user search space is the DCI matched with the user search space includes: and judging whether the size of the DCI blind-detected by the user search space is the second size value, if so, determining that the DCI blind-detected by the user search space is the DCI matched by the user search space, otherwise, determining that the DCI blind-detected by the user search space is not the DCI matched by the user search space.
5. A downlink control information transmission method, which is applied to a base station, the method comprising:
when a Physical Downlink Control Channel (PDCCH) needs to be called in a public search space, generating DCI matched with the public search space and issuing the DCI to the public search space through an air interface so as to be executed according to the steps in the method as claimed in any one of claims 1 to 4 when a terminal blindly detects the DCI in the public search space;
when the PDCCH is required to be invoked in the user search space, generating DCI matched with the user search space and issuing the DCI to the user search space through an air interface, so that when the terminal blindly detects the DCI in the user search space, the DCI is executed according to the steps in the method as claimed in any one of claims 1 to 4;
Wherein the DCI matched with the public search space is different from the DCI matched with the user search space; the DCI format of the DCI matched with the public search space is the same as that of the DCI matched with the user search space, and the content of the DCI code stream of the DCI matched with the public search space is different from that of the DCI matched with the user search space under the same DCI format;
the common search space and the user search space are partially overlapping;
any DCI is configured with a search space type indication field, the DCI matched with the common search space and the DCI matched with the user search space are obtained by configuring the search space type indication field in the DCI defined by a protocol, and are distinguished by a domain value of the search space type indication field;
or alternatively, the process may be performed,
the DCI matched by the public search space and/or the DCI matched by the user search space are obtained by adding a placeholder to the DCI defined by a protocol, the size of the DCI matched by the public search space is different from the size of the DCI matched by the user search space, and the DCI matched by the public search space and the DCI matched by the user search space are distinguished by a DCI size value.
6. The method of claim 5, wherein when the DCI to which the common search space is matched and the DCI to which the user search space is matched are distinguished by a domain value of a search space type indication field, the domain value of the search space type indication field in the DCI to which the common search space is matched is a first value, the domain value of the search space type indication field in the DCI to which the user search space is matched is a second value, and the first value is not equal to the second value; or alternatively, the process may be performed,
when the DCI matched with the public search space and the DCI matched with the user search space are distinguished by DCI size values, the size of the DCI matched with the public search space is a first size value, and the size of the DCI matched with the user search space is a second size value; the first size value is a DCI size of the protocol constraint, and the second size value is greater than the first size value.
7. A downlink control information transmission apparatus, which is applied to a terminal, the apparatus comprising:
the first judging module is configured to judge whether the DCI blind-detected by the public search space is the DCI matched with the public search space when the downlink control information DCI is blind-detected in the public search space, and if the DCI blind-detected by the public search space is the DCI matched with the public search space, continuously analyzing and executing the DCI blind-detected by the public search space;
The second judging module is configured to judge whether the DCI blind-detected by the user search space is the DCI matched with the user search space when the DCI is blind-detected in the user search space, and if the DCI blind-detected by the user search space is the DCI matched with the user search space, continuously analyzing and executing the DCI blind-detected by the user search space;
wherein the DCI matched with the public search space is different from the DCI matched with the user search space; the DCI format of the DCI matched with the public search space is the same as that of the DCI matched with the user search space, and the content of the DCI code stream of the DCI matched with the public search space is different from that of the DCI matched with the user search space under the same DCI format; the common search space and the user search space are partially overlapping;
any DCI is configured with a search space type indication field, the DCI matched with the common search space and the DCI matched with the user search space are obtained by configuring the search space type indication field in the DCI defined by a protocol, and are distinguished by a domain value of the search space type indication field;
or alternatively, the process may be performed,
the DCI matched by the public search space and/or the DCI matched by the user search space are obtained by adding a placeholder to the DCI defined by a protocol, the size of the DCI matched by the public search space is different from the size of the DCI matched by the user search space, and the DCI matched by the public search space and the DCI matched by the user search space are distinguished by a DCI size value.
8. The apparatus of claim 7, wherein when the DCI to which the common search space is matched and the DCI to which the user search space is matched are distinguished by a domain value of a search space type indication field, the domain value of the search space type indication field in the DCI to which the common search space is matched is a first value, the domain value of the search space type indication field in the DCI to which the user search space is matched is a second value, and the first value is not equal to the second value;
the first judging module is further configured to judge whether a domain value of a search space type indication field in the DCI blind-detected by the public search space is the first value, if so, determine that the DCI blind-detected by the public search space is the DCI matched with the public search space, and if not, determine that the DCI blind-detected by the public search space is not the DCI matched with the public search space;
the second judging module is further configured to judge whether a domain value of a search space type indication field in the DCI blind-detected by the user search space is the second value, if so, determine that the DCI blind-detected by the user search space is the DCI matched with the user search space, and if not, determine that the DCI blind-detected by the user search space is not the DCI matched with the user search space;
The DCI matched with the public search space and the DCI matched with the user search space have the same size;
the search space type indicates that the domain width of the domain is 1 bit;
or when the DCI matched with the public search space and the DCI matched with the user search space are distinguished by a DCI size value, the size of the DCI matched with the public search space is a first size value, and the size of the DCI matched with the user search space is a second size value;
the first judging module is further configured to judge whether the size of the DCI blind-detected by the public search space is the first size value, if so, determine that the DCI blind-detected by the public search space is the DCI matched by the public search space, otherwise, determine that the DCI blind-detected by the public search space is not the DCI matched by the public search space;
the second judging module is further configured to judge whether the size of the DCI blind-detected by the user search space is the second size value, if yes, determine that the DCI blind-detected by the user search space is the DCI matched with the user search space, otherwise, determine that the DCI blind-detected by the user search space is not the DCI matched with the user search space;
Wherein the first size value is a DCI size of a protocol constraint, and the second size value is greater than the first size value.
9. A downlink control information transmission apparatus, applied to a base station, comprising:
the first generating module is configured to generate DCI matched with a common search space when a physical downlink control channel PDCCH needs to be invoked in the common search space, and issue the DCI to a search public search space through an air interface, so that when a terminal blindly detects the DCI in the common search space, the first generating module is executed according to the steps in the method of any one of claims 1 to 4;
a second generating module, configured to generate DCI matched with a user search space and issue the DCI to the user search space through an air interface when the PDCCH needs to be invoked in the user search space, so that when a terminal blindly detects the DCI in the user search space, the second generating module performs the steps in the method according to any one of claims 1 to 4;
wherein the DCI matched with the public search space is different from the DCI matched with the user search space; the DCI format of the DCI matched with the public search space is the same as that of the DCI matched with the user search space, and the content of the DCI code stream of the DCI matched with the public search space is different from that of the DCI matched with the user search space under the same DCI format;
The common search space and the user search space are partially overlapping;
any DCI is configured with a search space type indication field, the DCI matched with the common search space and the DCI matched with the user search space are obtained by configuring the search space type indication field in the DCI defined by a protocol, and are distinguished by a domain value of the search space type indication field;
or alternatively, the process may be performed,
the DCI matched by the public search space and/or the DCI matched by the user search space are obtained by adding a placeholder to the DCI defined by a protocol, the size of the DCI matched by the public search space is different from the size of the DCI matched by the user search space, and the DCI matched by the public search space and the DCI matched by the user search space are distinguished by a DCI size value.
10. The apparatus of claim 9, wherein the device comprises a plurality of sensors,
when the DCI matched with the public search space and the DCI matched with the user search space are distinguished by the domain value of the search space type indication domain, the domain value of the search space type indication domain in the DCI matched with the public search space is a first value, the domain value of the search space type indication domain in the DCI matched with the user search space is a second value, and the first value and the second value are unequal; or alternatively, the process may be performed,
When the DCI matched with the public search space and the DCI matched with the user search space are distinguished by DCI size values, the size of the DCI matched with the public search space is a first size value, and the size of the DCI matched with the user search space is a second size value; the first size value is a DCI size of the protocol constraint, and the second size value is greater than the first size value.
11. An electronic device, comprising:
a processor; and
a memory in which computer program instructions are stored which, when executed by the processor, cause the processor to perform the method of any one of claims 1 to 6.
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