CN110545583B - DCI detection frequency indication and receiving method, base station, terminal and readable medium - Google Patents
DCI detection frequency indication and receiving method, base station, terminal and readable medium Download PDFInfo
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- CN110545583B CN110545583B CN201810535373.7A CN201810535373A CN110545583B CN 110545583 B CN110545583 B CN 110545583B CN 201810535373 A CN201810535373 A CN 201810535373A CN 110545583 B CN110545583 B CN 110545583B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04L5/00—Arrangements affording multiple use of the transmission path
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Abstract
A DCI detection times indication and receiving method, a base station, a terminal and a readable medium are provided, wherein the DCI detection times indication method comprises the following steps: determining relevant information of DCI detection times, wherein the relevant information of the DCI detection times comprises at least one of the following information: detecting frequency information of DCI and detecting order information of DCI; and transmitting the information related to the DCI detection times to the UE through the MAC CE. By applying the scheme, the detection times of the DCI can be quickly adjusted, the time delay for adjusting the detection times of the DCI is reduced, and the technical problem that the UE cannot accurately receive the scheduling information is solved.
Description
Technical Field
The embodiment of the invention relates to the field of communication, in particular to a DCI detection frequency indication and receiving method, a base station, a terminal and a readable medium.
Background
In a New Radio (NR) system, the maximum channel bandwidth of each carrier is 400MHz, which far exceeds the 20MHz bandwidth of a Long Term Evolution (LTE) system. When initially accessing, if a User Equipment (UE) directly accesses a 400MHz bandwidth, the hardware cost of the UE is high, and a large power consumption is also caused. The concept of fractional Bandwidth (BWP) is introduced.
In an NR system, each cell may contain one or more BWPs, each of which occupies a limited bandwidth, wherein at least one BWP allows idle-state user equipments to camp on. The idle ue receives the system message and the paging message through the BWP, so that the access network establishes a Radio Resource Control (RRC) connection and a data Radio bearer. This BWP is referred to as the initial BWP. For one user equipment, the base station may configure multiple BWPs for the user equipment according to user equipment capabilities, service requirements, and the like. For each BWP, corresponding to a plurality of parameter configurations, for example, the location of the Physical Resource block occupied by the BWP, and the configuration of a Control Resource Set (CORESET), a Physical Downlink Shared Channel (PDSCH), a Physical Uplink Control Channel (PUCCH), a Physical Uplink Shared Channel (PUSCH), a reference signal configuration, a Random Access Channel (RACH), etc., therein, the UE can apply the BWP only after knowing the configuration parameters.
At R15, there is one active BWP for each connected user device. The UE may receive Downlink Control Information (DCI) of the base station through the activated BWP, receive data from the BWP, and transmit data to the base station through the BWP. The specific process comprises the following steps: on active BWP, the UE detects its DCI at one or more configured CORESET, and for one CORESET, there may be two search spaces, a common search space and a UE-Specific search space. And the UE blindly detects the DCI in the search space according to a certain rule, and then receives data or uploads the data according to the DCI.
In specific applications, there is a limit to the total number of blind detections of DCI on active BWP. For example, when the subcarrier spacing of BWP takes a certain value, the total number of times of activating DCI blind detection on BWP is 44 for the primary cell; for the secondary cell, the total number of blind DCI detections activated on BWP is 32, so when the UE needs to be served by different beams, the base station needs to adjust the number of blind DCI detections on different search spaces through RRC signaling.
The detection times of the DCI are adjusted through RRC signaling, time delay is large, and UE cannot timely keep up with the adjustment of the DCI detection times of the base station, so that the UE cannot accurately receive scheduling information.
Disclosure of Invention
The technical problem solved by the embodiment of the invention is how to reduce the time delay for adjusting the DCI detection times and avoid the technical problem that the UE cannot accurately receive the scheduling information.
To solve the foregoing technical problem, an embodiment of the present invention provides a method for indicating DCI detection times, including: determining relevant information of DCI detection times, wherein the relevant information of the DCI detection times comprises at least one of the following information: detecting frequency information of DCI and detecting order information of DCI; and transmitting the information related to the DCI detection times to the UE through the MAC CE.
Optionally, the DCI detection number information includes: the detection method comprises a serving cell identification, a search space identification corresponding to the serving cell identification, and DCI detection times corresponding to the search space identification.
Optionally, the number of detection times of the DCI is any one of: a numerical value corresponding to the detection times and an adjustment ratio of the detection times.
Optionally, the numerical value corresponding to the detection times includes: 0 or a positive integer; when the value corresponding to the detection times is 0, indicating that the DCI corresponding to the search space identifier is not detected; and when the numerical value corresponding to the detection times is a positive integer, detecting the DCI corresponding to the search space identifier, wherein the maximum value of the detection times is the numerical value corresponding to the detection times.
Optionally, the detection order information of the DCI includes: the service cell identification and the search space identification corresponding to the service cell identification.
Optionally, the method for indicating the DCI detection times further includes: and transmitting the aggregation level of the DCI to the UE through the MAC CE.
Optionally, the aggregation level of the DCI is: a convergence level of the DCI corresponding to the UE-specific search space.
The embodiment of the invention provides a method for receiving DCI detection times, which comprises the following steps: receiving a MAC CE, wherein the MAC CE comprises information related to DCI detection times, and the information related to the DCI detection times comprises at least one of the following: detecting frequency information of DCI and detecting order information of DCI; and acquiring the relevant information of the DCI detection times through the MAC CE.
Optionally, the DCI detection number information includes: serving cell identification, search space identification corresponding to the serving cell identification, and DCI detection times corresponding to the search space identification.
Optionally, the number of detection times of the DCI is any one of: a numerical value corresponding to the detection times and an adjustment ratio of the detection times.
Optionally, the numerical value corresponding to the detection times includes: 0 and a positive integer; when the value corresponding to the detection times is 0, indicating that the DCI corresponding to the search space identifier is not detected; and when the numerical value corresponding to the detection times is a positive integer, detecting the DCI corresponding to the search space identifier, wherein the maximum value of the detection times is the numerical value corresponding to the detection times.
Optionally, the detection order information of the DCI includes: the service cell identification and the search space identification corresponding to the service cell identification.
Optionally, the MAC CE further includes: a convergence level of the DCI; the receiving method of the DCI detection times further comprises the following steps: and acquiring the aggregation level of the DCI through the MAC CE.
Optionally, the aggregation level of the DCI is: a particular search space corresponds to a DCI convergence level.
An embodiment of the present invention provides a base station, including: a determining unit, adapted to determine information related to the DCI detection times, where the information related to the DCI detection times includes at least one of: detecting frequency information of DCI and detecting order information of DCI; and the first sending unit is suitable for sending the information related to the DCI detection times to the UE through the MAC CE.
Optionally, the DCI detection number information includes: the detection method comprises a serving cell identification, a search space identification corresponding to the serving cell identification, and DCI detection times corresponding to the search space identification.
Optionally, the number of detection times of the DCI is any one of: a numerical value corresponding to the detection times and an adjustment ratio of the detection times.
Optionally, the numerical value corresponding to the detection times includes: 0 or a positive integer; when the value corresponding to the detection times is 0, indicating that the DCI corresponding to the search space identifier is not detected; and when the numerical value corresponding to the detection times is a positive integer, detecting the DCI corresponding to the search space identifier, wherein the maximum value of the detection times is the numerical value corresponding to the detection times.
Optionally, the detection order information of the DCI includes: the service cell identification and the search space identification corresponding to the service cell identification.
Optionally, the base station further includes: and the second transmitting unit is suitable for transmitting the aggregation level of the DCI to the UE through the MAC CE.
Optionally, the aggregation level of the DCI is: a convergence level of the DCI corresponding to the UE-specific search space.
An embodiment of the present invention provides a terminal, including: a receiving unit, adapted to receive a MAC CE, where the MAC CE includes information related to DCI detection times, and the information related to DCI detection times includes at least one of: detecting frequency information of DCI and detecting order information of DCI; and the first acquiring unit is suitable for acquiring the relevant information of the DCI detection times through the MAC CE.
Optionally, the DCI detection number information includes: serving cell identification, search space identification corresponding to the serving cell identification, and DCI detection times corresponding to the search space identification.
Optionally, the number of detection times of the DCI is any one of: a numerical value corresponding to the detection times and an adjustment ratio of the detection times.
Optionally, the numerical value corresponding to the detection times includes: 0 and a positive integer; when the value corresponding to the detection times is 0, indicating that the DCI corresponding to the search space identifier is not detected; and when the numerical value corresponding to the detection times is a positive integer, detecting the DCI corresponding to the search space identifier, wherein the maximum value of the detection times is the numerical value corresponding to the detection times.
Optionally, the detection order information of the DCI includes: the service cell identification and the search space identification corresponding to the service cell identification.
Optionally, the MAC CE further includes: a convergence level of the DCI; the terminal further comprises: and the second acquiring unit is suitable for acquiring the aggregation level of the DCI through the MAC CE.
Optionally, the aggregation level of the DCI is: a particular search space corresponds to a DCI convergence level.
The embodiment of the invention provides a computer-readable storage medium, which is a non-volatile storage medium or a non-transitory storage medium, and on which computer instructions are stored, and when the computer instructions are executed, the method for indicating the DCI detection times is performed according to any one of the above steps.
The embodiment of the invention provides a computer-readable storage medium, which is a non-volatile storage medium or a non-transitory storage medium, and on which computer instructions are stored, and when the computer instructions are executed, the step of any one of the methods for receiving DCI detection times is executed.
The embodiment of the invention provides a base station, which comprises a memory and a processor, wherein the memory is stored with a computer instruction capable of running on the processor, and the processor executes any one of the steps of the method for indicating the DCI detection times when running the computer instruction.
The embodiment of the invention provides a terminal, which comprises a memory and a processor, wherein the memory is stored with a computer instruction capable of running on the processor, and the processor executes any one of the steps of the receiving method of DCI detection times when running the computer instruction.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
according to the embodiment of the invention, the relevant information of the DCI detection times is determined, and then the relevant information of the DCI detection times is sent to the UE through the MAC CE, so that the DCI detection times can be quickly adjusted, the time delay of adjusting the DCI detection times is reduced, and the technical problem that the UE cannot accurately receive the scheduling information is solved.
Further, the aggregation level of the DCI is sent to the UE through the MAC CE, so that the aggregation level of the DCI can be quickly adjusted to adapt to different wireless channel environments, and the spectrum efficiency is improved.
Drawings
Fig. 1 is a flowchart of a method for indicating a DCI detection number according to an embodiment of the present invention;
fig. 2 is a flowchart of a DCI detection frequency receiving method according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a base station according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
Detailed Description
In the existing implementation scheme, the detection times of the DCI are adjusted through RRC signaling, so that the time delay is long, and it is very easy for the UE to fail to timely follow the adjustment of the DCI detection times of the base station, which results in that the UE cannot accurately receive the scheduling information.
According to the embodiment of the invention, the relevant information of the DCI detection times is determined, and then the relevant information of the DCI detection times is sent to the UE through the MAC CE, so that the DCI detection times can be quickly adjusted, the time delay of adjusting the DCI detection times is reduced, and the technical problem that the UE cannot accurately receive the scheduling information is solved.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1, an embodiment of the present invention provides a method for indicating a DCI detection number, which may include the following steps:
step S101, determining relevant information of DCI detection times, wherein the relevant information of the DCI detection times comprises at least one of the following: DCI detection number information and DCI detection order information.
In the specific implementation, because the base station adjusts the detection times of the DCI through the RRC signaling, the time delay is long, and it is easy to happen that the UE cannot timely follow the adjustment of the detection times of the DCI of the base station, so that the UE cannot accurately receive the scheduling information, the embodiment of the present invention adjusts the detection times of the DCI through a Medium Access Control Element (MAC CE). Before adjusting the detection times of the DCI by the MAC CE, the base station first needs to determine information related to the detection times of the DCI.
In specific implementation, the UE needs to detect DCI on a core set corresponding to an active BWP of a current serving cell to acquire downlink scheduling control signaling. For one BWP, multiple CORESET may be configured, and for each CORESET, one or multiple search space sets may be configured, and the UE receives DCI by blind detection, and since actual transmission information of DCI cannot be known in advance before blind detection, the UE often needs to detect multiple times to correctly demodulate DCI.
In a specific implementation, for the same serving cell, due to the limited capability of the UE or the limitation of the system configuration, the maximum DCI detection times of the UE is limited, so DCI detection times corresponding to different search spaces need to be reasonably allocated.
In a specific implementation, the base station may configure, according to the capability of the UE or the maximum blind detection number (i.e., the maximum number of times that the UE performs DCI detection) for a single serving cell, DCI detection numbers (i.e., blind detection numbers) of each search space corresponding to each CORESET by the UE, so as to ensure that the total number of DCI detections does not exceed the capability of the UE or the maximum blind detection number for the single serving cell by the UE set by the system.
For example, the maximum blind detection number is set to be 22, the base station configures 2 CORESET for the UE on BWP1, and each CORESET configures 5 search spaces, which are: the search space0 to the search space 4, the detection times of the DCI corresponding to each search space configured by the base station are sequentially 6, 2, and the maximum blind detection time of the UE on the serving cell may be related to the subcarrier interval of BWP1, and the like. At this time, the UE may detect DCI in all search spaces according to the detection times configured by the base station.
In a specific implementation, the UE may detect the DCI formats in multiple formats, and the base station may configure the DCI formats corresponding to the UE in different search spaces.
In a specific implementation, as the UE moves, the base station may use different beams to serve the UE, and the different beams may correspond to different DCI detection times, and at this time, the base station needs to adjust the DCI detection times in different search spaces so as to better provide scheduling for the UE. Therefore, the information related to the DCI detection times needs to be able to indicate DCI detections corresponding to different search spaces.
In a specific implementation, the information related to the DCI detection times may include at least one of: DCI detection frequency information and DCI detection order information. That is, the information related to the DCI detection times may be DCI detection time information, DCI detection order information, DCI detection time information, and DCI detection order information. The detection frequency information of the DCI directly indicates the detection frequency of the DCI under different search spaces corresponding to different service cells, and the detection order information of the DCI indirectly indicates the detection frequency of the DCI under different search spaces corresponding to different service cells.
In an embodiment of the present invention, the DCI detection frequency information includes: the detection method comprises a serving cell identification, a search space identification corresponding to the serving cell identification, and DCI detection times corresponding to the search space identification.
In a specific implementation, the detection frequency of the DCI may be a value corresponding to the detection frequency, or may be an adjustment ratio of the detection frequency.
In a specific implementation, the adjustment ratio of the detection times may be defined in a predetermined manner as an adjustment ratio with respect to a certain detection time value (i.e., a value corresponding to the detection times). For example, the adjustment ratio of the detection times may be defined as an adjustment ratio with respect to a DCI detection time value configured currently, or may be defined as an adjustment ratio with respect to a detection time value configured for a latest higher layer signaling, or may be defined as an adjustment ratio with respect to other detection time values, which is not limited in the embodiment of the present invention.
In a specific implementation, the adjustment ratio may be a multiple or a percentage, for example, 50%.
In an embodiment of the present invention, the numerical values corresponding to the detection times include: 0 or a positive integer; when the value corresponding to the detection times is 0, indicating that the DCI corresponding to the search space identifier is not detected; and when the numerical value corresponding to the detection times is a positive integer, detecting the DCI corresponding to the search space identifier, wherein the maximum value of the detection times is the numerical value corresponding to the detection times.
In a specific implementation, when the detection order information of the DCI indirectly indicates the DCI detection times in different search spaces, the priority of DCI detection in different search spaces may be sequentially indicated in a manner that the priority is from high to low.
In a specific implementation, when the sum of the DCI detection times of the configured different search spaces is greater than the maximum DCI detection time corresponding to the capability of the UE, or is greater than the maximum DCI detection time of the UE for a single serving cell set by the system, the UE may perform DCI detection in different search spaces in sequence through the detection order information, and stop DCI detection after the maximum DCI detection time is reached.
In an embodiment of the present invention, the detection order information of the DCI includes: the service cell identification and the search space identification corresponding to the service cell identification.
For example, in a certain serving cell, the maximum number of DCI detections is 22, and the configured search spaces are: the search space0 to the search space 4, the configured DCI detection times corresponding to the search space0 to the search space 4 are respectively as follows: 12. 6, 4, 8, and 8, the search spaces sequentially indicated by the detection order information of the DCI are: search space 1, search space3, search space 2, search space0, and search space 4. Then there are: detecting DCI for 6 times aiming at search space 1; detecting DCI for 8 times aiming at search space 3; for search space 2, DCI is detected 4 times, for search space0, DCI is detected min (12, 22-6-8-4) ═ 4 times, and for search space 4, DCI is not detected since the maximum number of times that DCI detection is exceeded is 22.
In a specific implementation, the detection order information of the DCI may include all configured search space identifiers or only a part of configured search space identifiers.
Step S102, the information related to the DCI detection times is sent to the UE through the MAC CE.
In specific implementation, the base station sends the information related to the DCI detection times to the UE through the MAC CE, so that the DCI detection times can be quickly adjusted, and the time delay for adjusting the DCI detection times is reduced, compared with RRC signaling.
For example, the base station indicates, through the MAC CE, that the number of times of detection of DCI on search space 1(search space 1) of the current serving cell is 3. After receiving, the UE detects 3 times DCI for the search space.
In a specific implementation, when the UE is in a carrier aggregation state, the UE may correspond to multiple serving cells, and at this time, the base station may modify, by the MAC CE, the number of times of detecting DCI on a search space corresponding to the multiple serving cells simultaneously.
In a specific implementation, when the information related to the DCI detection times includes the DCI detection order information, the UE may sequentially detect the DCI in the indicated search space when the maximum blind detection times (i.e., the maximum DCI detection times) for the serving cell are not reached according to the order indicated by the DCI detection order information.
For example, for serving cell 1, the maximum number of blind detections supported by the UE is 22, five search spaces from search space0 to search space 4 correspond to a certain CORESET configured by the base station for the UE, and the number of detections corresponding to each search space is 6, 2, and 2, respectively. Then, when the base station adjusts the detection times of the DCI corresponding to different search spaces through MAC CE or RRC signaling, the detection times corresponding to each search space are updated as follows: 12. 6, 4, 8 and 8. At this time, for the serving cell, since the sum of the DCI detection times corresponding to each configured search space already exceeds the maximum blind detection time (22 times), the order in which the base station instructs DCI detection through the MAC CE sequentially is: search space 1, search space3, search space 2, search space0, search space 4 (or just partial search space identification). After receiving the indication, the UE determines the number of times of actual DCI detection according to the maximum blind detection number 22, and for the search space 1, the detection needs to be performed for 6 times; for search space3, the DCI needs to be detected 8 times; for search space 2, DCI needs to be detected 4 times, and for search space0, min (12, 22-6-8-4) needs to be detected 4 times. The UE will not detect the search space 4 on this serving cell because the maximum number of blind detections for this serving cell by the UE has been reached.
In a specific implementation, different Physical Downlink Control Channel (PDCCH) channels may use different Control Channel Element (CCE) Aggregation levels (Aggregation levels), that is, resources including different numbers of Resource Elements (REs). Different wireless channels can be adapted through different CCE aggregation levels, and higher spectrum efficiency is provided.
In particular implementations, different DCI formats may correspond to the same or different CCE aggregation levels.
In specific implementation, the aggregation level of the DCI may be sent to the UE through the MAC CE, and the aggregation level of the DCI is quickly adjusted to adapt to different wireless channel environments, so as to improve spectrum efficiency.
For example, the aggregation level of a certain search space is adjusted from 8 to 4 by the MAC CE.
In a specific implementation, the aggregation level of the DCI transmitted by the MAC CE may include both the modified aggregation level and the blind detection frequency corresponding to the aggregation level, that is, the aggregation level corresponding to a certain search space and the blind detection frequency corresponding to the aggregation level may be simultaneously indicated by the MAC CE.
In a specific implementation, for a search space, the total blind detection times is the sum of the blind detection times corresponding to different convergence levels.
For example, the aggregation level on a certain search space includes: 2 and 4, respectively corresponding DCI blind detection times are 2 and 1, which indicates that when the aggregation level is 2, the DCI times needing to be detected are 2; when the aggregation level is 4, the number of DCI to be detected is 1, and the total number of blind detections in the search space is 3.
The aggregation level of the DCI is sent to the UE through the MAC CE, so that the aggregation level of the DCI can be quickly adjusted to adapt to different wireless channel environments, and the spectrum efficiency is improved.
In an embodiment of the present invention, the DCI aggregation level is a DCI aggregation level corresponding to the UE-specific search space.
In a specific implementation, for the UE, there may be one or more active BWPs of the current serving cell, and the indication method of the DCI detection times may be used for all the active BWPs.
By applying the scheme, the relevant information of the DCI detection times is determined, and then the MAC CE sends the relevant information of the DCI detection times to the UE, so that the DCI detection times can be quickly adjusted, the time delay of adjusting the DCI detection times is reduced, and the technical problem that the UE cannot accurately receive the scheduling information is solved.
In order to make those skilled in the art better understand and implement the present invention, the embodiment of the present invention further provides a receiving method of DCI detection times, as shown in fig. 2.
Referring to fig. 2, the DCI detection number reception method may include the following steps:
step S201, receiving a MAC CE, where the MAC CE includes information related to DCI detection times, where the information related to DCI detection times includes at least one of: DCI detection number information and DCI detection order information.
In a specific implementation, the information related to the DCI detection times may include at least one of: DCI detection frequency information and DCI detection order information. That is, the information related to the DCI detection times may be DCI detection time information, DCI detection order information, DCI detection time information, and DCI detection order information. The detection frequency information of the DCI is used for directly indicating the detection frequency of the DCI under different search spaces corresponding to different service cells, and the detection order information of the DCI is used for indirectly indicating the detection frequency of the DCI under different search spaces corresponding to different service cells.
In an embodiment of the present invention, the DCI detection frequency information includes: the detection method comprises a serving cell identification, a search space identification corresponding to the serving cell identification, and DCI detection times corresponding to the search space identification.
In a specific implementation, the detection frequency of the DCI may be a value corresponding to the detection frequency, or may be an adjustment ratio of the detection frequency.
In a specific implementation, the adjustment ratio of the detection times may be defined in a predetermined manner as an adjustment ratio with respect to a certain detection time value (i.e., a value corresponding to the detection times). For example, the adjustment ratio of the detection times may be defined as an adjustment ratio with respect to a DCI detection time value configured currently, or may be defined as an adjustment ratio with respect to a detection time value configured for a latest higher layer signaling, or may be defined as an adjustment ratio with respect to other detection time values, which is not limited in the embodiment of the present invention.
In a specific implementation, the adjustment ratio may be a multiple or a percentage, for example, 50%.
In an embodiment of the present invention, the numerical values corresponding to the detection times include: 0 or a positive integer; when the value corresponding to the detection times is 0, indicating that the DCI corresponding to the search space identifier is not detected; and when the numerical value corresponding to the detection times is a positive integer, detecting the DCI corresponding to the search space identifier, wherein the maximum value of the detection times is the numerical value corresponding to the detection times.
In a specific implementation, when the detection order information of the DCI is used to indirectly indicate the DCI detection times in different search spaces, the priorities of DCI detection in different search spaces may be sequentially indicated in a manner that the priorities are from high to low.
In a specific implementation, when the sum of the DCI detection times of the configured different search spaces is greater than the maximum DCI detection time corresponding to the capability of the UE, or is greater than the maximum DCI detection time of the UE for a single serving cell set by the system, DCI detection may be performed in different search spaces in sequence through the detection order information, and the DCI detection is stopped after the maximum DCI detection time is reached.
In an embodiment of the present invention, the detection order information of the DCI includes: the service cell identification and the search space identification corresponding to the service cell identification.
In a specific implementation, the detection order information of the DCI may include all configured search space identifiers or only a part of configured search space identifiers.
Step S202, obtaining the relevant information of the DCI detection times through the MAC CE.
In a specific implementation, the UE may obtain the information related to the DCI detection times through the MAC CE, and perform DCI detection.
For example, the information related to the DCI detection times indicates that the DCI detection times in search space 1 of the current serving cell is 3, and then the UE detects DCI for 3 times for search space 1 after acquiring the information related to the DCI detection times.
In a specific implementation, when in a carrier aggregation state, the UE may correspond to multiple serving cells, and at this time, the MAC CE may acquire the detection times of the DCI on the search spaces corresponding to the multiple serving cells.
In a specific implementation, when the information related to the DCI detection times includes the DCI detection order information, after the UE acquires the information related to the DCI detection times, according to the order indicated by the DCI detection order information, when the maximum DCI detection times for the serving cell is not reached, the UE sequentially detects DCI in the indicated search space.
For example, the maximum number of DCI detections is 22, and the configured search spaces are: the search space0 to the search space 4, the configured DCI detection times corresponding to the search space0 to the search space 4 are respectively as follows: 12. 6, 4, 8, and 8, the search spaces sequentially indicated by the detection order information of the DCI are: search space 1, search space3, search space 2, search space0, and search space 4. After acquiring the relevant information of the DCI detection times, the UE detects the DCI for 6 times aiming at the search space 1; detecting DCI for 8 times aiming at search space 3; for search space 2, DCI is detected 4 times, for search space0, DCI is detected min (12, 22-6-8-4) ═ 4 times, and for search space 4, DCI is not detected since the maximum number of times that DCI detection is exceeded is 22.
In a specific implementation, the MAC CE may further include: a convergence level of the DCI; the receiving method of the DCI detection times may further include: and acquiring the aggregation level of the DCI through the MAC CE.
In an embodiment of the present invention, the DCI aggregation level may be a DCI aggregation level corresponding to a specific search space.
By applying the scheme, the relevant information of the DCI detection times is acquired by receiving the MAC CE, so that the time delay for adjusting the DCI detection times can be reduced, and the technical problem that the scheduling information cannot be accurately received is solved.
In order to make those skilled in the art better understand and implement the present invention, the embodiment of the present invention further provides a base station capable of implementing the above DCI detection frequency indication method, as shown in fig. 3.
Referring to fig. 3, the base station 30 may include: a determination unit 31 and a first transmission unit 32, wherein:
the determining unit 31 is adapted to determine information related to the DCI detection times, where the information related to the DCI detection times includes at least one of: DCI detection number information and DCI detection order information.
The first sending unit 32 is adapted to send the information related to the DCI detection times to the UE through the MAC CE.
In an embodiment of the present invention, the DCI detection frequency information includes: the detection method comprises a serving cell identification, a search space identification corresponding to the serving cell identification, and DCI detection times corresponding to the search space identification.
In a specific implementation, the detection frequency of the DCI is any one of the following: a numerical value corresponding to the detection times and an adjustment ratio of the detection times.
In an embodiment of the present invention, the numerical values corresponding to the detection times include: 0 or a positive integer; when the value corresponding to the detection times is 0, indicating that the DCI corresponding to the search space identifier is not detected; and when the numerical value corresponding to the detection times is a positive integer, detecting the DCI corresponding to the search space identifier, wherein the maximum value of the detection times is the numerical value corresponding to the detection times.
In an embodiment of the present invention, the detection order information of the DCI includes: the service cell identification and the search space identification corresponding to the service cell identification.
In a specific implementation, the base station 30 may further include: and a second transmitting unit (not shown) adapted to transmit the aggregation level of the DCI to the UE through the MAC CE.
In an embodiment of the present invention, the DCI aggregation level is: a convergence level of the DCI corresponding to the UE-specific search space.
In a specific implementation, the working procedure and the principle of the base station 30 may refer to the description in the DCI detection frequency indication method provided in the foregoing embodiment, and are not described herein again.
In order to make those skilled in the art better understand and implement the present invention, the embodiment of the present invention further provides a terminal capable of implementing the receiving method for detecting the DCI detection times, as shown in fig. 4.
Referring to fig. 4, the terminal 40 may include: a receiving unit 41 and a first obtaining unit 42, wherein:
the receiving unit 41 is adapted to receive a MAC CE, where the MAC CE includes information related to DCI detection times, and the information related to DCI detection times includes at least one of: DCI detection number information and DCI detection order information.
The first obtaining unit 42 is adapted to obtain information related to the DCI detection times through the MAC CE.
In an embodiment of the present invention, the DCI detection frequency information includes: serving cell identification, search space identification corresponding to the serving cell identification, and DCI detection times corresponding to the search space identification.
In a specific implementation, the detection frequency of the DCI is any one of the following: a numerical value corresponding to the detection times and an adjustment ratio of the detection times.
In an embodiment of the present invention, the numerical values corresponding to the detection times include: 0 and a positive integer; when the value corresponding to the detection times is 0, indicating that the DCI corresponding to the search space identifier is not detected; and when the numerical value corresponding to the detection times is a positive integer, detecting the DCI corresponding to the search space identifier, wherein the maximum value of the detection times is the numerical value corresponding to the detection times.
In an embodiment of the present invention, the detection order information of the DCI includes: the service cell identification and the search space identification corresponding to the service cell identification.
In a specific implementation, the MAC CE may further include: a convergence level of the DCI; the terminal further comprises: a second obtaining unit (not shown) adapted to obtain the aggregation level of the DCI through the MAC CE.
In an embodiment of the present invention, the DCI aggregation level is: a convergence level of the DCI corresponding to the UE-specific search space.
In a specific implementation, the working flow and the principle of the terminal 40 may refer to descriptions in the receiving method for DCI detection times provided in the above embodiments, and are not described herein again.
The embodiment of the present invention provides a computer-readable storage medium, which is a non-volatile storage medium or a non-transitory storage medium, and on which a computer instruction is stored, where the computer instruction executes, when running, any one of the above methods for indicating DCI detection times or the steps corresponding to the methods for receiving DCI detection times, which is not described herein again.
The embodiment of the present invention provides a base station, including a memory and a processor, where the memory stores a computer instruction capable of being executed on the processor, and the processor executes, when executing the computer instruction, a step corresponding to any one of the methods for indicating DCI detection times, which is not described herein again.
The embodiment of the present invention provides a terminal, including a memory and a processor, where the memory stores a computer instruction capable of being executed on the processor, and the processor executes, when executing the computer instruction, any of the steps corresponding to the receiving method for DCI detection times, which is not described herein again.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable storage medium, and the storage medium may include: ROM, RAM, magnetic or optical disks, and the like.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (32)
1. A method for indicating DCI detection times is characterized by comprising the following steps:
determining relevant information of DCI detection times, wherein the relevant information of the DCI detection times comprises at least one of the following information: detecting frequency information of DCI and detecting order information of DCI;
sending the relevant information of the DCI detection times to UE through MAC CE, and carrying out DCI detection by the UE according to the maximum blind detection times corresponding to the UE;
the DCI detection frequency information is used for indicating the DCI detection frequency corresponding to different search spaces; the detection order information of the DCI comprises search space identifiers, and is used for indicating order information of each search space identifier for detecting DCI in different search spaces.
2. The method for indicating the DCI detection times according to claim 1, wherein the DCI detection time information includes:
the detection method comprises a serving cell identification, a search space identification corresponding to the serving cell identification, and DCI detection times corresponding to the search space identification.
3. The method for indicating the DCI detection times according to claim 2, wherein the DCI detection times is any one of:
a numerical value corresponding to the detection times and an adjustment ratio of the detection times.
4. The method for indicating the DCI detection times according to claim 3, wherein the numerical value corresponding to the detection times includes: 0 or a positive integer;
when the value corresponding to the detection times is 0, indicating that the DCI corresponding to the search space identifier is not detected;
and when the numerical value corresponding to the detection times is a positive integer, detecting the DCI corresponding to the search space identifier, wherein the maximum value of the detection times is the numerical value corresponding to the detection times.
5. The method for indicating the DCI detection times according to claim 1, wherein the DCI detection order information includes:
the service cell identification and the search space identification corresponding to the service cell identification.
6. The method for indicating the DCI detection times according to claim 1, further comprising:
and transmitting the aggregation level of the DCI to the UE through the MAC CE.
7. The method for indicating the DCI detection times according to claim 6, wherein the DCI aggregation level is: a convergence level of the DCI corresponding to the UE-specific search space.
8. A receiving method of DCI detection times is characterized by comprising the following steps:
receiving a MAC CE, wherein the MAC CE comprises information related to DCI detection times, and the information related to the DCI detection times comprises at least one of the following: detecting frequency information of DCI and detecting order information of DCI;
acquiring relevant information of the DCI detection times through the MAC CE so as to carry out DCI detection according to the maximum blind detection times corresponding to the DCI detection times;
the DCI detection frequency information is used for indicating the DCI detection frequency corresponding to different search spaces; the detection order information of the DCI comprises search space identifiers, and is used for indicating order information of each search space identifier for detecting DCI in different search spaces.
9. The DCI detection number reception method according to claim 8, wherein the DCI detection number information includes:
serving cell identification, search space identification corresponding to the serving cell identification, and DCI detection times corresponding to the search space identification.
10. The method for receiving the DCI detection times according to claim 9, wherein the DCI detection times is any one of:
a numerical value corresponding to the detection times and an adjustment ratio of the detection times.
11. The DCI receiving method according to claim 10, wherein the value corresponding to the detection number comprises: 0 and a positive integer;
when the value corresponding to the detection times is 0, indicating that the DCI corresponding to the search space identifier is not detected;
and when the numerical value corresponding to the detection times is a positive integer, detecting the DCI corresponding to the search space identifier, wherein the maximum value of the detection times is the numerical value corresponding to the detection times.
12. The method of claim 8, wherein the DCI detection order information comprises:
the service cell identification and the search space identification corresponding to the service cell identification.
13. The DCI receiving method according to claim 8, wherein the MAC CE further includes: a convergence level of the DCI;
further comprising:
and acquiring the aggregation level of the DCI through the MAC CE.
14. The method for receiving the DCI detection times according to claim 13, wherein the DCI aggregation level is: a particular search space corresponds to a DCI convergence level.
15. A base station, comprising:
a determining unit, adapted to determine information related to the DCI detection times, where the information related to the DCI detection times includes at least one of: detecting frequency information of DCI and detecting order information of DCI;
the first sending unit is suitable for sending the relevant information of the DCI detection times to the UE through the MAC CE, and the UE carries out the DCI detection according to the maximum blind detection times corresponding to the UE;
the DCI detection frequency information is used for indicating the DCI detection frequency corresponding to different search spaces; the detection order information of the DCI comprises search space identifiers, and is used for indicating order information of each search space identifier for detecting DCI in different search spaces.
16. The base station of claim 15, wherein the DCI detection number information includes:
the detection method comprises a serving cell identification, a search space identification corresponding to the serving cell identification, and DCI detection times corresponding to the search space identification.
17. The base station of claim 16, wherein the DCI detection times are any one of:
a numerical value corresponding to the detection times and an adjustment ratio of the detection times.
18. The base station of claim 17, wherein the value corresponding to the number of detections comprises: 0 or a positive integer;
when the value corresponding to the detection times is 0, indicating that the DCI corresponding to the search space identifier is not detected;
and when the numerical value corresponding to the detection times is a positive integer, detecting the DCI corresponding to the search space identifier, wherein the maximum value of the detection times is the numerical value corresponding to the detection times.
19. The base station of claim 15, wherein the DCI detection order information comprises:
the service cell identification and the search space identification corresponding to the service cell identification.
20. The base station of claim 15, further comprising:
and the second transmitting unit is suitable for transmitting the aggregation level of the DCI to the UE through the MAC CE.
21. The base station of claim 20, wherein the DCI aggregation level is: a convergence level of the DCI corresponding to the UE-specific search space.
22. A terminal, comprising:
a receiving unit, adapted to receive a MAC CE, where the MAC CE includes information related to DCI detection times, and the information related to DCI detection times includes at least one of: detecting frequency information of DCI and detecting order information of DCI;
the first obtaining unit is suitable for obtaining the relevant information of the DCI detection times through the MAC CE so as to carry out the DCI detection according to the maximum blind detection times corresponding to the first obtaining unit;
the DCI detection frequency information is used for indicating the DCI detection frequency corresponding to different search spaces; the detection order information of the DCI comprises search space identifiers, and is used for indicating order information of each search space identifier for detecting DCI in different search spaces.
23. The terminal of claim 22, wherein the DCI detection time information includes:
serving cell identification, search space identification corresponding to the serving cell identification, and DCI detection times corresponding to the search space identification.
24. The terminal of claim 23, wherein the DCI detection times are any one of:
a numerical value corresponding to the detection times and an adjustment ratio of the detection times.
25. The terminal of claim 24, wherein the value corresponding to the detection times comprises: 0 and a positive integer;
when the value corresponding to the detection times is 0, indicating that the DCI corresponding to the search space identifier is not detected;
and when the numerical value corresponding to the detection times is a positive integer, detecting the DCI corresponding to the search space identifier, wherein the maximum value of the detection times is the numerical value corresponding to the detection times.
26. The terminal of claim 22, wherein the DCI detection order information comprises:
the service cell identification and the search space identification corresponding to the service cell identification.
27. The terminal of claim 22,
the MAC CE further includes: a convergence level of the DCI;
further comprising:
and the second acquiring unit is suitable for acquiring the aggregation level of the DCI through the MAC CE.
28. The terminal of claim 27, wherein the DCI aggregation level is: a particular search space corresponds to a DCI convergence level.
29. A computer-readable storage medium, being a non-volatile storage medium or a non-transitory storage medium, having computer instructions stored thereon, wherein the computer instructions, when executed, perform the steps of the method according to any one of claims 1 to 7.
30. A computer-readable storage medium, being a non-volatile storage medium or a non-transitory storage medium, having computer instructions stored thereon, wherein the computer instructions, when executed, perform the steps of the method according to any one of claims 8 to 14.
31. A base station comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the processor, when executing the computer instructions, performs the steps of the method of any one of claims 1 to 7.
32. A terminal comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the processor, when executing the computer instructions, performs the steps of the method of any one of claims 8 to 14.
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| CN114556859A (en) * | 2021-12-02 | 2022-05-27 | 北京小米移动软件有限公司 | Downlink control information detection and transmission method and device, and storage medium |
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