CN114640424B - PDCCH blind detection method, storage medium and computing device based on narrow-band DMRS configuration - Google Patents
PDCCH blind detection method, storage medium and computing device based on narrow-band DMRS configuration Download PDFInfo
- Publication number
- CN114640424B CN114640424B CN202210141195.6A CN202210141195A CN114640424B CN 114640424 B CN114640424 B CN 114640424B CN 202210141195 A CN202210141195 A CN 202210141195A CN 114640424 B CN114640424 B CN 114640424B
- Authority
- CN
- China
- Prior art keywords
- pdcch
- dmrs
- blind detection
- channel estimation
- narrow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 claims abstract description 13
- 230000002776 aggregation Effects 0.000 claims description 14
- 238000004220 aggregation Methods 0.000 claims description 14
- 230000015654 memory Effects 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 5
- 238000012163 sequencing technique Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920001690 polydopamine Polymers 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
Classifications
-
- 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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
- H04L25/0226—Channel estimation using sounding signals sounding signals per se
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
- H04L27/2607—Cyclic extensions
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Power Engineering (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a PDCCH blind detection method based on narrow-band DMRS configuration, a storage medium and a computing device, wherein the method comprises the steps of utilizing the narrow-band DMRS configuration to narrow the PDCCH blind detection range and then carrying out the PDCCH blind detection method; the narrowband DMRS configuration includes: (1) The narrow-band DMRS only transmits the DMRS sequence on the frequency domain resource of the dispatching PDCCH; (2) The DMRS channel estimates for the same subcarrier and adjacent symbols are approximately equal. The invention utilizes the characteristic that the narrow-band DMRS only transmits the DMRS sequence on the frequency domain resource of the dispatching PDCCH, combines the characteristic that the estimated values of the DMRS channels under the same subcarrier and adjacent symbols are approximately equal to each other to further reduce the PDCCH detection range, reduce the invalid detection times, further reduce the transmission delay of the system and have a certain promotion effect on the 5G NR system with higher delay requirement.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a PDCCH (Physical Downlink Control Channel ) blind detection method, a storage medium, and a computing device configured based on a narrowband DMRS (Demodulation REFERENCE SIGNALS, demodulation reference signal).
Background
In the 5G NR system, a PDCCH channel is used to carry DCI (Downlink Control Information ) information, and is mainly used to instruct uplink and downlink scheduling, terminal power control, and the like. Different from the maximum system bandwidth (under non-carrier aggregation) of 20M in LTE (Long Term Evolution ), the maximum system bandwidth of the NR system in the frequency band below 6GHz is 100M, and the maximum system bandwidth in the frequency band above 6GHz can reach 400M. The PDCCH channel does not occupy the whole system bandwidth any more, so that the searching complexity of the terminal is reduced, the power consumption is reduced, and the frequency domain resource utilization rate is further improved, so that the resource configuration of the PDCCH is more flexible. In NR, CORESET (Control Resource Set) is used to indicate the time-frequency domain Resource position of PDCCH, namely the number of RBs (Resource blocks) occupied by PDCCH, the RB position, the number of symbols, etc. are all indicated by CORESET on the base station side, one CORESET is used on the frequency domain/>, On the RB time domainA symbol composition.
In the NR system, considering the limitation of the power consumption and the capability of the terminal, a concept of BWP (Bandwidth Part) is proposed, where the terminal and the network side can only transmit uplink and downlink data on a specified BWP, and the UE can configure up to 4 BWP resources, only one BWP can be activated at the same time, and the configuration of CORESET resources also needs to refer to the resource configuration of the BWP.
In the NR system, a cell reference signal CRS (CELL REFERENCE SIGNALS, cell reference signal) in LTE is cancelled, and a demodulation reference signal DMRS is introduced for channel estimation and related demodulation of each physical channel. DMRS of PDCCH are classified into two types, narrowband DMRS and wideband DMRS. When the higher layer parameter precoderGranularity is configured as SAMEASREG-bundle, namely configured as a narrowband DMRS, the narrowband DMRS only transmits a DMRS sequence on the frequency domain resource of the scheduling PDCCH; if the higher layer parameter precoderGranularity is configured as allContiguousRBs, i.e., configured as a wideband DMRS, the wideband DMRS will transmit the DMRS sequence on the entire CORESET frequency domain resource. DMRS of PDCCH is fixedly mapped on REs No. 1, 5 and 9 of each RB.
At the base station side, the NR protocol specifies that L consecutive CCE (control CHANNEL ELEMENT ) resources may be used to carry DCI information, where L is referred to as an aggregation level and may take on values 1,2, 4, 8, 16.
However, the base station side does not tell the specific aggregation level used by the current PDCCH of the UE and the CCE resource location carrying the DCI message, and the UE needs to try the candidate sets under each aggregation level one by one according to the current situation, which is called PDCCH blind detection. In the traditional PDCCH blind detection method, all available aggregation levels and candidate sets are traversed in sequence, and a large number of repeated calculations are needed for each blind detection, so that a large transmission delay is brought to the whole system.
Disclosure of Invention
The invention aims to provide a PDCCH blind detection method based on narrow-band DMRS configuration, which aims to solve the problem that a system has larger transmission delay because a large number of repeated calculations are needed in the traditional PDCCH blind detection method.
The invention provides a PDCCH blind detection method based on narrow-band DMRS configuration, which comprises the steps of narrowing a PDCCH blind detection range by utilizing the narrow-band DMRS configuration and then carrying out the PDCCH blind detection method;
the narrowband DMRS configuration includes:
(1) The narrow-band DMRS only transmits the DMRS sequence on the frequency domain resource of the dispatching PDCCH;
(2) The DMRS channel estimates for the same subcarrier and adjacent symbols are approximately equal.
Further, the PDCCH occupies 1-3 symbols in each CORESET configurations.
Further, when the PDCCH occupies 1 symbol in each CORESET configurations, the PDCCH blind detection is performed by using a traversal search method.
Further, when the PDCCH occupies 2 or 3 symbols in each CORESET configurations, the PDCCH blind detection method includes the following steps:
S10, narrowing the PDCCH blind detection range through a blind detection pretreatment process to obtain the effective RB resource position to be detected;
S20, when UE selects one aggregation level and traverses and detects each candidate set under the aggregation level, firstly judging whether the RB position of the candidate set is a valid RB resource position to be detected, if so, continuing to detect the candidate set, otherwise, not detecting the candidate set; and then, continuing to judge and detect the next candidate set or aggregation level until the PDCCH blind detection is successful, and acquiring a correct DCI message.
Further, the blind detection pretreatment process in step S10 includes the following sub-steps:
s11, according to a protocol, the UE generates a local DMRS reference signal, and simultaneously acquires a corresponding DMRS reference signal on an RB position possibly mapped by a PDCCH in a downlink signal according to CORESET configuration information, and calculates a channel estimation value of the corresponding DMRS reference signal on the RB position possibly mapped by the PDCCH;
S12, based on the channel estimation value, calculating a channel estimation difference value on adjacent symbols of the same sub-carrier at the RB position according to the RB position possibly mapped by the same PDCCH in CORESET configuration information, and calculating an average value of the channel estimation difference value;
S13, repeating the step S12 to calculate the average value of channel estimation difference values on adjacent symbols of the same subcarrier in the RB positions possibly mapped by all PDCCHs in the current CORESET configuration information;
S14, sorting the average value of each channel estimation difference value according to a rule from small to large;
S15, subtracting the first minimum value from the average value of the channel estimation difference values in the ordered sequence to obtain a new ordered sequence, and calculating the average value of the new ordered sequence;
S16, comparing each numerical value of the new sequencing number sequence with the average value, finding out all numerical values smaller than the average value of the new sequencing number sequence, and reserving the corresponding RB position, namely the effective RB resource position to be detected.
Further, when the PDCCH occupies 2 symbols in each CORESET configurations, in step S12, the channel estimation difference value on the same subcarrier adjacent symbol at the RB position is calculated as follows:
Wherein, Is a channel estimation value; l is the symbol position of the DMRS reference signal; k is the corresponding subcarrier location.
Further, when the PDCCH occupies 3 symbols in each CORESET configurations, in step S12, the channel estimation difference value on the same subcarrier adjacent symbol at the RB position is calculated as follows:
Wherein, Is a channel estimation value; l is the symbol position of the DMRS reference signal; k is the corresponding subcarrier location.
The invention also provides a computer terminal storage medium, which stores computer terminal executable instructions for executing the PDCCH blind detection method based on the narrow-band DMRS configuration.
The present invention also provides a computing device comprising:
At least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform a PDCCH blind detection method based on narrowband DMRS configuration as described above
In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:
the invention provides a method for improving the blind detection efficiency of a PDCCH (physical downlink control channel) by combining the characteristic that the narrow-band DMRS only transmits a DMRS sequence on the frequency domain resource of a scheduling PDCCH under the configuration of the narrow-band DMRS and the characteristic that the estimated values of the DMRS channels under the same subcarrier and adjacent symbols are approximately equal.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly describe the drawings in the embodiments, it being understood that the following drawings only illustrate some embodiments of the present invention and should not be considered as limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a PDCCH blind detection method based on narrowband DMRS configuration in an embodiment of the present invention.
Fig. 2 is a flowchart of a blind detection preprocessing procedure of a PDCCH blind detection method based on narrowband DMRS configuration in an embodiment of the present invention.
Fig. 3 is a schematic diagram of PDCCH occupying 2 symbols in each CORESET configurations according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of PDCCH occupying 3 symbols in each CORESET configurations according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples
The embodiment provides a PDCCH blind detection method based on narrow-band DMRS configuration, which comprises the steps of narrowing a PDCCH blind detection range by utilizing the narrow-band DMRS configuration and then carrying out the PDCCH blind detection method;
the narrowband DMRS configuration includes:
(1) The narrow-band DMRS only transmits the DMRS sequence on the frequency domain resource of the dispatching PDCCH; when the higher layer parameter precoderGranularity is configured as SAMEASREG-bundle, configured as a narrowband DMRS, the configuration of the narrowband DMRS in this embodiment only sends the DMRS sequence on the frequency domain resource of the scheduling PDCCH. The time-frequency resource position of the PDCCH mapped by the base station side also needs to be in the time-frequency resource range of the selected CORESET configuration, one CORESET configuration is a set of a plurality of RBs, the PDCCH of one UE only occupies part of the RB resources, and the RBs without PDCCH data mapped can be used for transmitting the PDCCH data of the PDSCH or other UEs;
(2) The DMRS channel estimation values under the same subcarrier and adjacent symbols are approximately equal; in the RB resources mapped by PDCCH data, the channel estimation value of the RE may be obtained by using local DMRS correlation configuration, and according to the radio channel transmission characteristics, the DMRS channel estimation values under the same subcarrier and adjacent symbols are configured to be approximately equal in this embodiment. For the narrow-band DMRS configuration, DMRS positions on candidate RBs not occupied by PDCCH data will not bear the DMRS, and when channel estimation is performed by using a local DMRS reference signal, the channel estimation value of the RE cannot be correctly obtained, that is, the finally calculated channel estimation value does not satisfy the approximate equality. Therefore, the receiving end can further reduce the time-frequency resource range possibly mapping the PDCCH data by analyzing the channel estimation value of the DMRS reference signal in the RB within the CORESET range, thereby achieving the purposes of reducing the blind detection range and improving the blind detection efficiency of the PDCCH.
The PDCCH occupies 1-3 symbols in each CORESET configurations. Wherein:
When the PDCCH occupies 1 symbol in each CORESET configurations, a traversal search method (i.e., a conventional PDCCH blind detection method) is adopted to perform PDCCH blind detection.
When the PDCCH occupies 2 or 3 symbols in each CORESET configurations, as shown in fig. 1, the PDCCH blind detection method includes the steps of:
S10, narrowing the PDCCH blind detection range through a blind detection pretreatment process to obtain the effective RB resource position to be detected; as shown in fig. 2, specifically:
s11, according to the protocol, the UE generates a local DMRS reference signal, acquires a corresponding DMRS reference signal at an RB position possibly mapped by the PDCCH in the downlink signal according to CORESET configuration information, calculates a channel estimation value of the corresponding DMRS reference signal at the RB position possibly mapped by the PDCCH, and sets as L is the symbol position of the DMRS reference signal; k is the corresponding subcarrier position; the method for calculating the channel estimation value may be an existing method, and will not be described herein.
S12, based on the channel estimation value, calculating the channel estimation difference value delta H on the adjacent symbol of the same subcarrier at the RB position according to the RB position possibly mapped by the same PDCCH in CORESET configuration information, and calculating the average value of the channel estimation difference values
(1) When the PDCCH occupies 2 symbols in each CORESET configurations, as shown in fig. 3, in step S12, the channel estimation difference value on the same subcarrier adjacent symbol at the RB position is calculated as follows:
(2) When the PDCCH occupies 3 symbols in each CORESET configurations, as shown in fig. 4, in step S12, the channel estimation difference value on the same subcarrier adjacent symbol at the RB position is calculated as follows:
Then calculate the average value of the channel estimation difference value
Wherein 3 indicates that DMRS occupies 3 RE positions within one RB, one symbol.
S13, repeating the step S12 to calculate the average value of the channel estimation difference values on the adjacent symbols of the same sub-carrier in the RB positions possibly mapped by all PDCCHs in the current CORESET configuration information Wherein n is the number of RB positions which are possibly mapped by PDCCH in CORESET configuration;
s14, sorting the average value of each channel estimation difference value according to a rule from small to large to obtain:
S15, averaging the channel estimation difference values in the ordered sequence Subtracting the first minimum value/>Obtain a new ordered sequence 0,/> And calculates the average value/>, of the new ordered series
S16, each numerical value 0 of the new ordered sequence,Average value ofComparing to find the average value/>, which is less than the new sorting sequenceNumerical value/>J is E [1, n ] and remainThe corresponding RB position is the effective RB resource position to be detected.
S20, when UE selects one aggregation level and traverses and detects each candidate set under the aggregation level, firstly judging whether the RB position of the candidate set is a valid RB resource position to be detected, if so, continuing to detect the candidate set, otherwise, not detecting the candidate set; and then, continuing to judge and detect the next candidate set or aggregation level until the PDCCH blind detection is successful, and acquiring a correct DCI message.
Furthermore, in some embodiments, a computer terminal storage medium is provided, where computer terminal executable instructions are stored, where the computer terminal executable instructions are configured to perform the PDCCH blind detection method based on narrowband DMRS configuration as described in the foregoing embodiments. Examples of the computer storage medium include magnetic storage media (e.g., floppy disks, hard disks, etc.), optical recording media (e.g., CD-ROMs, DVDs, etc.), or memories such as memory cards, ROMs, or RAMs, etc. The computer storage media may also be distributed over network-connected computer systems, such as stores for application programs.
Furthermore, in some embodiments, a computing device is presented comprising: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the PDCCH blind detection method based on narrowband DMRS configuration as described in the previous embodiments. Examples of computing devices include PCs, tablets, smartphones, PDAs, etc.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The PDCCH blind detection method based on the narrow-band DMRS configuration is characterized by comprising the steps of narrowing the PDCCH blind detection range by utilizing the narrow-band DMRS configuration and then carrying out the PDCCH blind detection method;
the narrowband DMRS configuration includes:
(1) The narrow-band DMRS only transmits the DMRS sequence on the frequency domain resource of the dispatching PDCCH;
(2) The DMRS channel estimation values under the same subcarrier and adjacent symbols are approximately equal;
the PDCCH occupies 1 to 3 symbols in each CORESET configuration; when PDCCH occupies 1 symbol in each CORESET configuration, performing PDCCH blind detection by adopting a traversal search method;
When the PDCCH occupies 2 or 3 symbols in each CORESET configurations, the PDCCH blind detection method comprises the following steps:
S10, narrowing the PDCCH blind detection range through a blind detection pretreatment process to obtain the effective RB resource position to be detected;
s20, when UE selects one aggregation level and traverses and detects each candidate set under the aggregation level, firstly judging whether the RB position of the candidate set is a valid RB resource position to be detected, if so, continuing to detect the candidate set, otherwise, not detecting the candidate set; then, continuing to judge and detect the next candidate set or aggregation level until the PDCCH blind detection is successful, and acquiring a correct DCI message;
the blind detection pretreatment process in step S10 includes the following sub-steps:
s11, according to a protocol, the UE generates a local DMRS reference signal, and simultaneously acquires a corresponding DMRS reference signal on an RB position possibly mapped by a PDCCH in a downlink signal according to CORESET configuration information, and calculates a channel estimation value of the corresponding DMRS reference signal on the RB position possibly mapped by the PDCCH;
S12, based on the channel estimation value, calculating a channel estimation difference value on adjacent symbols of the same sub-carrier at the RB position according to the RB position possibly mapped by the same PDCCH in CORESET configuration information, and calculating an average value of the channel estimation difference value;
S13, repeating the step S12 to calculate the average value of channel estimation difference values on adjacent symbols of the same subcarrier in the RB positions possibly mapped by all PDCCHs in the current CORESET configuration information;
S14, sorting the average value of each channel estimation difference value according to a rule from small to large;
S15, subtracting the first minimum value from the average value of the channel estimation difference values in the ordered sequence to obtain a new ordered sequence, and calculating the average value of the new ordered sequence;
S16, comparing each numerical value of the new sequencing number sequence with the average value, finding out all numerical values smaller than the average value of the new sequencing number sequence, and reserving the corresponding RB position, namely the effective RB resource position to be detected;
when the PDCCH occupies 2 symbols in each CORESET configurations, in step S12, the channel estimation difference value on the adjacent symbol of the same subcarrier at the RB position is calculated as:
Wherein, Is a channel estimation value; l is the symbol position of the DMRS reference signal; k is the corresponding subcarrier position;
When the PDCCH occupies 3 symbols in each CORESET configurations, in step S12, the channel estimation difference value on the adjacent symbol of the same subcarrier at the RB position is calculated as:
Wherein, Is a channel estimation value; l is the symbol position of the DMRS reference signal; k is the corresponding subcarrier location.
2. A computer terminal storage medium storing computer terminal executable instructions for performing the PDCCH blind detection method based on narrowband DMRS configuration of claim 1.
3. A computing device, comprising:
at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the PDCCH blind detection method based on narrowband DMRS configuration of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210141195.6A CN114640424B (en) | 2022-02-16 | 2022-02-16 | PDCCH blind detection method, storage medium and computing device based on narrow-band DMRS configuration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210141195.6A CN114640424B (en) | 2022-02-16 | 2022-02-16 | PDCCH blind detection method, storage medium and computing device based on narrow-band DMRS configuration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114640424A CN114640424A (en) | 2022-06-17 |
| CN114640424B true CN114640424B (en) | 2024-04-23 |
Family
ID=81946453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210141195.6A Active CN114640424B (en) | 2022-02-16 | 2022-02-16 | PDCCH blind detection method, storage medium and computing device based on narrow-band DMRS configuration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114640424B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013017946A2 (en) * | 2011-07-29 | 2013-02-07 | Alcatel Lucent | Method of and apparatus for pre-coded physical downlink control channel reference signal and blind decoding |
| WO2013113286A1 (en) * | 2012-02-01 | 2013-08-08 | 华为技术有限公司 | Demodulation pilot signal processing method, base station and user equipment |
| CN104094663A (en) * | 2012-01-30 | 2014-10-08 | Lg电子株式会社 | Method for resource allocation for downlink control channel in wireless communication system and apparatus therefor |
| CN108141336A (en) * | 2015-09-29 | 2018-06-08 | Lg电子株式会社 | For receiving the method for down link control information and user equipment and for sending the method for down link control information and base station |
| CN109660315A (en) * | 2017-10-10 | 2019-04-19 | 北京展讯高科通信技术有限公司 | PDCCH blind detection method and device, storage medium, user equipment based on DMRS |
| CN109995497A (en) * | 2018-02-14 | 2019-07-09 | 华为技术有限公司 | Downlink control information transmission method |
| WO2019139955A1 (en) * | 2018-01-10 | 2019-07-18 | Idac Holdings, Inc. | Methods for identifying resources of a new radio physical downlink control channel which have been preempted by ultra-reliable low latency communication |
| CN111786916A (en) * | 2020-06-04 | 2020-10-16 | Oppo广东移动通信有限公司 | Channel estimation method and device, terminal and storage medium |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11018910B2 (en) * | 2017-11-17 | 2021-05-25 | Mediatek Inc. | On PDCCH DMRS mapping and coreset resource allocation |
-
2022
- 2022-02-16 CN CN202210141195.6A patent/CN114640424B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013017946A2 (en) * | 2011-07-29 | 2013-02-07 | Alcatel Lucent | Method of and apparatus for pre-coded physical downlink control channel reference signal and blind decoding |
| CN104094663A (en) * | 2012-01-30 | 2014-10-08 | Lg电子株式会社 | Method for resource allocation for downlink control channel in wireless communication system and apparatus therefor |
| WO2013113286A1 (en) * | 2012-02-01 | 2013-08-08 | 华为技术有限公司 | Demodulation pilot signal processing method, base station and user equipment |
| CN108141336A (en) * | 2015-09-29 | 2018-06-08 | Lg电子株式会社 | For receiving the method for down link control information and user equipment and for sending the method for down link control information and base station |
| CN109660315A (en) * | 2017-10-10 | 2019-04-19 | 北京展讯高科通信技术有限公司 | PDCCH blind detection method and device, storage medium, user equipment based on DMRS |
| WO2019139955A1 (en) * | 2018-01-10 | 2019-07-18 | Idac Holdings, Inc. | Methods for identifying resources of a new radio physical downlink control channel which have been preempted by ultra-reliable low latency communication |
| CN109995497A (en) * | 2018-02-14 | 2019-07-09 | 华为技术有限公司 | Downlink control information transmission method |
| CN111786916A (en) * | 2020-06-04 | 2020-10-16 | Oppo广东移动通信有限公司 | Channel estimation method and device, terminal and storage medium |
Non-Patent Citations (6)
| Title |
|---|
| 5G中基于功率测量的PDCCH自适应盲检测算法;张德民;曾艳辉;张洋;;计算机应用与软件;20200312(第03期);全文 * |
| Dynamic PDCCH Adaptation Based on DMRS Detection for UE Power Saving in 5G New Radio;Taehyoung Kim等;IEEE;20191107;全文 * |
| Huawei, HiSilicon.R1-1812191 "NR numerology and frame structure for unlicensed bands".3GPP tsg_ran\wg1_rl1.2018,(第tsgr1_95期),全文. * |
| LTE-A系统中E-PDCCH设计及性能研究;尤雅;朱宇霞;张元雨;;现代电子技术;20150301(第05期);全文 * |
| Sony Corporation.R1-150428 "MTC Operation with a Narrowband PDCCH".3GPP tsg_ran\WG1_RL1.2015,(第TSGR1_80期),全文. * |
| 低复杂度PDCCH盲检测算法;周游;胡捍英;陈国军;;计算机应用研究;20130515(第10期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114640424A (en) | 2022-06-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11201764B2 (en) | Communication method and communications apparatus | |
| CN112512124B (en) | Method for determining side link transmission resource | |
| EP3258629B1 (en) | Blind detection method and system for physical downlink control channel (pdcch) | |
| CN109673056B (en) | PDCCH (physical Downlink control channel) adaptive blind detection method based on power measurement in 5G (third generation) system | |
| JP6437493B2 (en) | Insertion of virtual carrier into conventional OFDM host carrier in communication system | |
| US8755345B2 (en) | Method and system for resource distribution, blind detection method, base station, user equipment | |
| US7764643B2 (en) | Wireless communication system, transmitting device and receiving device | |
| US10165559B2 (en) | Method for detection of ePDCCH using DMRS quality measure | |
| US20140086371A1 (en) | Interference cancellation apparatus and receiver | |
| US20140348123A1 (en) | Method and device for transmitting control signaling | |
| US9451569B1 (en) | Systems and methods for detecting a primary synchronization signal in a wireless communication system | |
| US20190342043A1 (en) | Data receiving method, data sending method, receiving device, and sending device | |
| EP2665207B1 (en) | User Equipment and Method for Radio Link Monitoring | |
| CN113055124A (en) | PDCCH detection method and device and user equipment | |
| CN111901083A (en) | Quasi co-location information acquisition method, communication node and storage medium | |
| CN109041243B (en) | Sending method and receiving method of physical downlink control channel and related equipment | |
| CN112333121B (en) | Signal detection method and device, computer equipment and storage medium | |
| CN114640424B (en) | PDCCH blind detection method, storage medium and computing device based on narrow-band DMRS configuration | |
| US9936373B2 (en) | Discovery signals in heterogeneous wireless networks | |
| US20100086069A1 (en) | Communication device and communication system | |
| CN110324109B (en) | PDSCH (physical Downlink shared channel) rate matching method and device, user terminal and computer readable storage medium | |
| CN106209304B (en) | A kind of centralized EPDCCH blind detection method based on PRBs sequence | |
| CN107205273B (en) | DCI blind detection data processing method and device | |
| CN110719625B (en) | SSB sending method and device, base station and system | |
| CN114666010A (en) | Processing method, equipment and storage medium of PUSCH time domain data in NR-5G |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |