Methods, apparatus, equipment and storage media for physical downlink control channel detection

Abstract

This application discloses a method, apparatus, device, and storage medium for detecting physical downlink control channels. The method includes: acquiring at least one channel set within a target time slot, and the aggregation level and first signal strength of the physical downlink control channels in each channel set; comparing the first signal strength with multiple preset signal strengths to obtain a target strength interval where the first signal strength is located; determining the target order of the preset aggregation levels corresponding to the target strength interval; sorting the physical downlink control channels in each channel set according to the target order to obtain a first detection order for the physical downlink control channels in each channel set; detecting according to the first detection order and a second detection order of at least one channel set; and terminating the detection of physical downlink control channels in each channel set if the number of detected downlink control information is not less than a preset value. This avoids the terminal device performing a large amount of useless blind detection processing, saving resources.

Description

Technical Field

[0001] This application belongs to the field of communication technology, and in particular relates to a method, apparatus, device and storage medium for physical downlink control channel detection. Background Technology

[0002] In 5G NR, the Physical Downlink Control Channel (PDCCH) is used to carry Downlink Control Information (DCI). When DCI is scheduled, the base station selects one or more PDCCH candidates from the PDCCH candidate set to transmit the DCI. The terminal device periodically performs blind checks on the PDCCH according to the configured PDCCH monitoring period to obtain the DCI.

[0003] In existing technologies, terminal devices need to perform blind detection on all PDCCHs in the PDCCH candidate set. There are a maximum of 44 PDCCHs in each monitoring time slot, meaning that the terminal device needs to detect a maximum of 44 PDCCHs before the blind detection process can be completed.

[0004] However, the base station does not continuously schedule PDCCHs in every monitoring time slot. Even if PDCCHs are scheduled in a certain monitoring time slot, only a portion of the PDCCHs carry valid DCIs. In other words, most PDCCHs in the candidate set do not need to be detected. In existing technologies, terminal devices perform a large amount of useless blind detection processing, wasting a significant amount of resources. Summary of the Invention

[0005] This application provides a method, apparatus, device, and storage medium for physical downlink control channel (PDCCH) detection. Before performing blind detection on all PDCCHs, the detection order of PDCCHs is determined by the signal strength and aggregation level of the PDCCHs. Priority is given to detecting PDCCHs with the highest probability of carrying DCIs. As long as a valid number of DCIs are detected, i.e., the number of detected downlink control information is not less than a preset value, the detection of physical downlink control channels in each channel set is stopped. This avoids the terminal equipment performing a large amount of useless blind detection processing, saving resources.

[0006] In a first aspect, embodiments of this application provide a method for detecting a physical downlink control channel, including:

[0007] Obtain at least one channel set within the target time slot, and the aggregation level and first signal strength of the physical downlink control channel in each channel set;

[0008] By comparing the first signal strength with multiple preset signal strengths, the target strength interval of the first signal strength of the physical downlink control channel in each channel set is obtained, and the interval endpoint value of the target strength interval includes at least one of the multiple preset signal strengths;

[0009] Based on the relationship information between the intensity range and the preset aggregation level, the target order of the preset aggregation level corresponding to the target intensity range is determined. The preset aggregation level includes the aggregation level of the physical downlink control channel in each channel set.

[0010] Based on the aggregation level of the physical downlink control channels in each channel set, the physical downlink control channels in each channel set are sorted according to the target order to obtain the first detection order of the physical downlink control channels in each channel set.

[0011] In accordance with the first detection order and the second detection order of at least one channel set, the physical downlink control channel in each channel set is detected to see if it includes downlink control information. If the number of downlink control information detected in the target time slot is not less than a preset value, the detection of the physical downlink control channel in each channel set is stopped.

[0012] In one possible implementation, obtaining at least one set of channels within the target time slot includes:

[0013] Obtain the aggregation level, desired downlink control information size, and first signal strength of at least one physical downlink control channel within the target time slot;

[0014] Physical downlink control channels with the same expected downlink control information size are grouped into the same channel set to obtain at least one channel set.

[0015] In one possible implementation, by comparing a first signal strength with multiple preset signal strengths, a target strength range is obtained for the first signal strength of the physical downlink control channel in each channel set, including:

[0016] The second signal strength is obtained when transmitting downlink control information of multiple preset downlink control information sizes using a physical downlink control channel with a preset aggregation level, wherein the preset signal strength includes the second signal strength;

[0017] By comparing the first signal strength of the physical downlink control channel in each channel set with the second signal strength when transmitting downlink control information of the desired downlink control information size using the physical downlink control channel with a preset aggregation level, the target strength range of the first signal strength of the physical downlink control channel in each channel set is obtained.

[0018] Among them, the multiple preset downlink control information sizes include the expected downlink control information size, and the target expected downlink control information size is the same as the expected downlink control information size of each channel set.

[0019] In one possible implementation, before detecting whether the physical downlink control channel in each channel set includes downlink control information according to a first detection order and a second detection order of at least one channel set, the method further includes:

[0020] The channels are sorted in descending order of the expected downlink control information size for each channel set to obtain a second detection order for at least one channel set.

[0021] In one possible implementation, before detecting whether the physical downlink control channel in each channel set includes downlink control information according to a first detection order and a second detection order of at least one channel set, the method further includes:

[0022] The channels are sorted in ascending order of the expected downlink control information size for each channel set to obtain a second detection order for at least one channel set.

[0023] In one possible implementation, the downlink control information includes downlink control information and uplink control information, and the preset value includes a first value and a second value; if the number of detected downlink control information is not less than the preset value, the detection of physical downlink control channels in each channel set is stopped, including:

[0024] Obtain the communication mode of the physical downlink control channel in each channel set;

[0025] When the communication mode is FDD and the number of downlink control information and uplink control information detected is not less than the first value, the detection of physical downlink control channels in each channel set is stopped.

[0026] When the communication mode is TDD, and the number of downlink control information detected is not less than the first value, and the number of uplink control information detected is not less than the second value, the detection of physical downlink control channels in each channel set is stopped.

[0027] In one possible implementation, when the communication mode is FDD and the number of detected downlink control information and uplink control information is not less than a first value, the detection of physical downlink control channels in each channel set is stopped, including:

[0028] Upon detecting downlink control information of the first target, the uplink and downlink identifiers of the downlink control information of the first target are obtained;

[0029] When the uplink / downlink identifier of the first target downlink control information indicates that the first target downlink control information is downlink control information, the physical downlink control channel that transmits downlink control information is removed from each channel set.

[0030] When the communication mode is FDD and the uplink / downlink identifier of the first target downlink control information indicates that the first target downlink control information is uplink control information, the physical downlink control channel that transmits uplink control information is removed from each channel set.

[0031] If the number of downlink control information and uplink control information detected is not less than the first value, the detection of physical downlink control channels in each channel set is stopped.

[0032] In one possible implementation, when the communication mode is TDD and the number of detected downlink control information is not less than a first value and the number of detected uplink control information is not less than a second value, the detection of physical downlink control channels in each channel set is suspended, including:

[0033] Upon detecting downlink control information of the first target, the uplink and downlink identifiers of the downlink control information of the first target are obtained;

[0034] When the uplink / downlink identifier of the first target downlink control information indicates that the first target downlink control information is downlink control information, the physical downlink control channel that transmits downlink control information is removed from each channel set.

[0035] When the communication mode is TDD and the uplink / downlink identifier of the first target downlink control information indicates that the first target downlink control information is uplink control information, the physical downlink control channel following the target physical downlink control channel that transmits the first target downlink control information in each channel set is detected according to the first detection order and the second detection order of at least one channel set to determine whether the physical downlink control channel includes downlink control information.

[0036] If downlink control information of the second target is detected, the uplink and downlink identifiers of the downlink control information of the second target are obtained;

[0037] When the uplink / downlink identifier of the second target downlink control information indicates that the second target downlink control information is uplink control information, the physical downlink control channel that transmits uplink control information is removed from each channel set;

[0038] If the number of downlink control information detected is not less than the first value and the number of uplink control information detected is not less than the second value, the detection of physical downlink control channels in each channel set is stopped.

[0039] Secondly, embodiments of this application provide an apparatus for physical downlink control channel detection, comprising:

[0040] The acquisition module is used to acquire at least one channel set within the target time slot, as well as the aggregation level and first signal strength of the physical downlink control channel in each channel set;

[0041] The comparison module is used to compare the first signal strength with multiple preset signal strengths to obtain the target strength interval where the first signal strength of the physical downlink control channel in each channel set is located. The interval endpoint values ​​of the target strength interval include at least one of the multiple preset signal strengths.

[0042] The determination module is used to determine the target order of the preset aggregation levels corresponding to the target intensity range based on the relationship information between the intensity range and the preset aggregation level. The preset aggregation level includes the aggregation level of the physical downlink control channel in each channel set.

[0043] The sorting module is used to sort the physical downlink control channels in each channel set according to the target order based on the aggregation level of the physical downlink control channels in each channel set, so as to obtain the first detection order of the physical downlink control channels in each channel set.

[0044] The detection module is used to detect whether the physical downlink control channel in each channel set includes downlink control information according to a first detection order and a second detection order of at least one channel set. If the number of downlink control information detected in the target time slot is not less than a preset value, the detection of the physical downlink control channel in each channel set is stopped.

[0045] Thirdly, embodiments of this application provide an electronic device, the device comprising:

[0046] Processor and memory storing computer program instructions;

[0047] A method for physical downlink control channel detection that implements any of the above when the processor executes computer program instructions.

[0048] Fourthly, embodiments of this application provide a computer storage medium storing computer program instructions, which, when executed by a processor, implement the physical downlink control channel detection method described above.

[0049] Fifthly, embodiments of this application provide a computer program product, characterized in that, when the instructions in the computer program product are executed by the processor of an electronic device, the electronic device is able to execute any of the above-mentioned methods for physical downlink control channel detection.

[0050] This application discloses a method, apparatus, device, and storage medium for detecting physical downlink control channels. The method includes: acquiring at least one channel set within a target time slot, and the aggregation level and first signal strength of physical downlink control channels in each channel set; comparing the first signal strength with multiple preset signal strengths to obtain a target strength interval where the first signal strength of the physical downlink control channels in each channel set is located, wherein the endpoint values ​​of the target strength interval include at least one of the multiple preset signal strengths; determining a target order of preset aggregation levels corresponding to the target strength interval based on the relationship information between the strength interval and the order of preset aggregation levels, wherein the preset aggregation levels include the aggregation level of physical downlink control channels in each channel set; sorting the physical downlink control channels in each channel set according to the target order based on the aggregation level of the physical downlink control channels in each channel set to obtain a first detection order of physical downlink control channels in each channel set; detecting whether the physical downlink control channels in each channel set include downlink control information according to the first detection order and a second detection order of at least one channel set; and terminating the detection of physical downlink control channels in each channel set if the number of downlink control information detected in the target time slot is not less than a preset value.

[0051] In this way, before performing blind detection on all PDCCHs, the detection order of PDCCHs is determined by their signal strength and aggregation level. Priority is given to detecting PDCCHs with the highest probability of carrying DCIs. As long as a valid number of DCIs are detected (i.e., the number of detected downlink control information is not less than a preset value), the detection of physical downlink control channels in each channel set is stopped. This avoids the terminal equipment performing a large amount of useless blind detection processing, saving resources. Attached Figure Description

[0052] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0053] Figure 1 This is a schematic diagram of physical downlink control channels with different aggregation levels provided in one embodiment of this application;

[0054] Figure 2 This is a flowchart illustrating a method for detecting the physical downlink control channel provided in another embodiment of this application;

[0055] Figure 3 This is a flowchart illustrating a method for detecting the physical downlink control channel provided in another embodiment of this application;

[0056] Figure 4This is a flowchart illustrating a method for detecting the physical downlink control channel provided in another embodiment of this application;

[0057] Figure 5 This is a flowchart illustrating a method for detecting the physical downlink control channel provided in another embodiment of this application;

[0058] Figure 6 This is a flowchart illustrating a method for detecting the physical downlink control channel provided in another embodiment of this application;

[0059] Figure 7 This is a flowchart illustrating a method for detecting the physical downlink control channel provided in another embodiment of this application;

[0060] Figure 8 This is a schematic diagram of the structure of a physical downlink control channel detection device provided in another embodiment of this application;

[0061] Figure 9 This is a schematic diagram of the structure of an electronic device provided in another embodiment of this application. Detailed Implementation

[0062] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0063] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0064] In 5G NR, the Physical Downlink Control Channel (PDCCH) is used to carry Downlink Control Information (DCI). When DCI is scheduled, the base station selects one or more PDCCHs from the candidate PDCCH set to transmit the DCI. The terminal device (UE) periodically performs blind checks on the PDCCH according to the configured PDCCH monitoring period to obtain the DCI. NR, short for New Radio, is the 5G radio network. In 5G NR, the base station informs the terminal of the time and frequency domain information of the downlink control channel, the start position, length, and period of the monitoring occupancy (MO), the PDCCHs (PDCCH aggregation levels, the number of PDCCHs corresponding to each aggregation level) on these CORESET and SS sets, and the format of the downlink control information to be monitored through the configuration information of the Control Resource Set (CORESET) and Search Space Set (SS set).

[0065] In existing technologies, terminal devices need to perform blind detection on all PDCCH candidate sets to obtain DCI. There are a maximum of 44 PDCCHs in each monitoring time slot, meaning that the terminal device needs to detect a maximum of 44 PDCCHs to end the blind detection process.

[0066] However, the base station does not continuously schedule PDCCHs in every monitoring time slot. Even if PDCCHs are scheduled in a certain monitoring time slot, only a portion of the PDCCHs carry valid DCIs. In other words, most PDCCHs in the candidate set do not need to be detected. In existing technologies, terminal devices perform a large amount of useless blind detection processing, wasting a significant amount of resources.

[0067] Figure 1 A schematic diagram of the physical downlink control channel at different aggregation levels (AL) is shown. Figure 1 As shown, for a Control Channel Element (CCE) PDCCH SS set with a total length of 24, AL1, AL2, AL4, AL8, and AL16 have 6, 4, 3, 2, and 1 PDCCHs respectively, and the CCE areas they occupy are as follows. Figure 1 As shown.

[0068] To address the problems of existing technologies, embodiments of this application provide a method, apparatus, device, and storage medium for physical downlink control channel detection. Based on Figure 1 It is known that for a given DCI size, a higher CCE AL level allows for more available PDCCH resources and higher DCI transmission reliability. However, it also reduces the number of UEs that the base station can simultaneously schedule. Therefore, from a reliability perspective, a higher CCE AL is better, while from the perspective of the number of UEs served, a lower CCE AL is better. To balance these two aspects, the base station selects a suitable CCE AL for scheduling under certain channel conditions, satisfying both DCI transmission reliability and avoiding excessive resource consumption.

[0069] Currently, it is known that in NR FDD mode, each slot has at most one uplink DCI and one downlink DCI, while in NRTDD mode, each slot has at most two uplink DCIs and one downlink DCI. NR PDCCH, due to the introduction of a 24-bit CRC (Cyclic Redundancy Check, the most commonly used error-checking code in data communication, characterized by the arbitrary selection of the lengths of the information field and the check field), has an extremely low false detection rate, approximately 2^(-21). Therefore, once the expected number of uplink or downlink DCIs is detected, the blind detection processing of the current slot's PDCCH can be terminated. Based on this premise, the UE can sort all candidate PDCCHs, prioritizing the PDCCH with the highest probability of carrying DCIs. Thus, as long as the expected number of uplink or downlink DCIs are detected, the blind detection processing of the current slot's PDCCH can be terminated.

[0070] As can be seen from the above, the processing order of PDCCH is very important for quickly completing the blind detection of PDCCH. A proper sorting can greatly shorten the processing time of blind detection of PDCCH and achieve maximum power saving performance. Conversely, processing PDCCH in random order may require processing up to 44 PDCCH to end the blind detection, resulting in poor power saving performance.

[0071] The physical downlink control channel (PDCCH) detection method provided in this application determines the PDCCH detection order based on the PDCCH signal strength and aggregation level before performing blind detection on all PDCCHs. It prioritizes detecting PDCCHs with the highest probability of carrying DCIs. Once a valid number of DCIs are detected (i.e., the number of detected downlink control information items is not less than a preset value), the detection of physical downlink control channels in each channel set is terminated. This avoids the terminal equipment performing a large amount of useless blind detection processing, saving resources.

[0072] The method for physical downlink control channel detection provided in the embodiments of this application will be described below.

[0073] Figure 2 A flowchart illustrating a method for physical downlink control channel detection according to an embodiment of this application is shown.

[0074] like Figure 2 As shown in the embodiments of this application, the method for physical downlink control channel detection includes the following steps.

[0075] S110. Obtain at least one channel set within the target time slot, and the aggregation level and first signal strength of the physical downlink control channel in each channel set.

[0076] Here, the expected DCI size is the same for physical downlink control channel transmissions within the same channel set.

[0077] In some embodiments, the number of DCIs that the terminal device expects to receive within a time slot is determined. At least one channel set within the target time slot is obtained, along with the aggregation level and first signal strength of the physical downlink control channels in each channel set. Here, the first signal strength may be the strength of an associated reference signal. The associated reference signal may be an SSB or a TRS. The NRPDCCH is transmitted via a single antenna port and has a quasi-co-location relationship with the associated reference signal (SSB or TRS). Based on the channel quality of the reference signal, the terminal device can estimate the channel quality of the NR PDCCH and predict the CCE aggregation level corresponding to the most likely DCI scheduling. Channel quality includes signal strength. In some embodiments, the first signal strength is the signal strength of the most recent associated reference signal of the physical downlink control channel. The first signal strength is obtained through measurement. The aggregation level is equal to the number of CCEs occupied by the physical downlink control channels.

[0078] In some embodiments, channel quality includes signal-to-noise ratio (SNR) or reference signal receiving power (RSRP). Signal strength can be understood as reference signal receiving power, or it can be replaced by signal-to-noise ratio.

[0079] S120. Compare the first signal strength with multiple preset signal strengths to obtain the target strength interval where the first signal strength of the physical downlink control channel in each channel set is located. The endpoint values ​​of the target strength interval include at least one of the multiple preset signal strengths.

[0080] Here, multiple preset signal strengths can be determined in advance.

[0081] In some embodiments, the expected DCI size of the physical downlink control channel transmission corresponding to multiple preset signal strengths is the same as the expected DCI size of the physical downlink control channel transmission corresponding to the first signal strength. The number of preset signal strengths is the same as the number of aggregation levels; that is, one aggregation level of physical downlink control channel corresponds to one preset signal strength.

[0082] In some embodiments, the target strength range of the first signal strength of the physical downlink control channel in each channel set is determined by comparing the magnitudes of the first signal strength and a plurality of preset signal strengths.

[0083] S130. Based on the relationship information between the intensity range and the preset aggregation level, determine the target order of the preset aggregation level corresponding to the target intensity range. The preset aggregation level includes the aggregation level of the physical downlink control channel in each channel set.

[0084] Here, the preset aggregation levels include AL1, AL2, AL4, AL8, and AL16. The relationship between the intensity ranges and the order of the preset aggregation levels is predetermined.

[0085] In some embodiments, based on the relationship information between the intensity range and the preferred aggregation level, the target preferred aggregation level corresponding to the target intensity range can be determined, and the physical downlink control channel corresponding to the target preferred aggregation level is the physical downlink control channel with the highest probability of carrying DCI. Here, the relationship information between the intensity range and the preferred aggregation level is determined in advance.

[0086] In some embodiments, the target order of preset aggregation levels corresponding to the target strength range can be determined based on the relationship information between the strength range and the order of preset aggregation levels. The preferred aggregation level is ranked first in the preset aggregation level order. The order of other aggregation levels in the preset aggregation level order can be based on their proximity to the first aggregation level; for aggregation levels with the same degree of proximity to the first aggregation level, the one with the larger aggregation level is ranked first. This preset aggregation level order takes into account that the number of PDCCHs with larger CCE aggregation levels is usually smaller, allowing for faster traversal, and that under the same expected DCI size, a larger CCE aggregation level results in higher transmission reliability.

[0087] In some embodiments, the relationship between intensity ranges and the order of preset aggregation levels is shown in Table 1. By comparing the first signal strength with multiple preset signal strengths, the target intensity range in which the first signal strength lies is obtained. Based on the relationship between the intensity range and the preferred aggregation level, the target preferred aggregation level corresponding to the target intensity range can be determined; based on the relationship between the intensity range and the order of preset aggregation levels, the target order of the preset aggregation levels corresponding to the target intensity range is determined.

[0088] Table 1

[0089] Intensity range Preferred aggregation level Preset aggregation level order T≥T0 1 1，2，4，8，16 T1≤T<T0 2 2，4，1，8，16 T2≤T<T1 4 4，8，2，16，1 T3≤T<T2 8 8，16，4，2，1 T<T3 16 16，8，4，2，1

[0090] Where, T is the first signal strength; T0, T1, T2, and T3 are preset signal strengths.

[0091] As an example, if T2 ≤ T < T1, the target preferred aggregation level is 4, and the target order of the preset aggregation levels is 4, 8, 2, 16, 1.

[0092] S140. Based on the aggregation levels of the physical downlink control channels in each channel set, sort the physical downlink control channels in each channel set according to the target order to obtain the first detection order of the physical downlink control channels in each channel set.

[0093] In some embodiments, for the physical downlink control channels in a channel set, sort the physical downlink control channels in each channel set according to the target order to obtain the first detection order of the physical downlink control channels in this channel set.

[0094] In some embodiments, for the sorting of the physical downlink control channels with equal aggregation levels in this channel set, no specific limitation is made here. For example, they can be sorted in ascending order of the first CCE (StartCCE) or randomly sorted.

[0095] S150. Detect whether the physical downlink control channels in each channel set include downlink control information according to the first detection order and the second detection order of at least one channel set. When the number of downlink control information detected in the target time slot is not less than the preset value, abort the detection of the physical downlink control channels in each channel set.

[0096] Here, the first detection order is the detection order of the physical downlink control channels in each channel set, and the second detection order is the detection order of at least one channel set. The preset value is determined in advance.

[0097] In some embodiments, the number of DCIs that the terminal device is expected to receive within a time slot is determined. Following a first detection order and a second detection order for at least one channel set, the physical downlink control channels in each channel set are detected from front to back to determine whether they include downlink control information. If the number of detected downlink control information is not less than a preset value, the detection of physical downlink control channels in each channel set is stopped. Thus, before performing blind detection on all PDCCHs, the detection order of PDCCHs is determined by the signal strength and aggregation level of the PDCCHs, prioritizing the detection of PDCCHs with the highest probability of carrying DCIs. As long as a valid number of DCIs are detected, i.e., if the number of detected downlink control information is not less than a preset value, the detection of physical downlink control channels in each channel set is stopped. This avoids the terminal device performing a large number of useless blind detection processes, saving resources.

[0098] Based on this, in some embodiments, obtaining at least one channel set within the target time slot in S110 above may include:

[0099] Obtain the aggregation level, desired downlink control information size, and first signal strength of at least one physical downlink control channel within the target time slot;

[0100] Physical downlink control channels with the same expected downlink control information size are grouped into the same channel set to obtain at least one channel set.

[0101] In some embodiments, at least one physical downlink control channel (PDCCH) is divided into multiple groups according to the expected downlink control information size. If the target time slot is to blindly detect two different expected DCI sizes of PDCCH, it is divided into two groups; if it is to blindly detect three different expected DCI sizes, it is divided into three groups. There are at most three groups of different DCI sizes. Physical downlink control channels with the same expected downlink control information size are grouped into the same channel set to obtain at least one channel set.

[0102] In this way, the physical downlink control channels are divided according to the expected downlink control information size. Physical downlink control channels with the same expected downlink control information size are grouped into the same channel set. When comparing the first signal strength and the preset signal strength, the signal strength with the same downlink control information size is compared. This avoids the influence of the downlink control information size, improves the accuracy of the comparison results, optimizes the detection order, avoids the terminal equipment from performing useless blind detection processing, and saves resources.

[0103] Based on this, in some embodiments, such as Figure 3 As shown, the above S120 may specifically include:

[0104] S121. Obtain the second signal strength when transmitting downlink control information of multiple preset downlink control information sizes using a physical downlink control channel with a preset aggregation level, wherein the preset signal strength includes the second signal strength.

[0105] S122. Compare the first signal strength of the physical downlink control channel in each channel set with the second signal strength when transmitting downlink control information of the desired downlink control information size using the physical downlink control channel with a preset aggregation level, and obtain the target strength range where the first signal strength of the physical downlink control channel in each channel set is located.

[0106] Among them, the multiple preset downlink control information sizes include the expected downlink control information size, and the target expected downlink control information size is the same as the expected downlink control information size of each channel set.

[0107] Here, the second signal strength is preset. The method for determining the second signal strength is not specifically limited here; it can be directly input by the user. Preset aggregation levels include AL1, AL2, AL4, AL8, and AL16. Preset downlink control information sizes include DCI size 1, DCI size 2, and DCI size 3.

[0108] In some embodiments, the signal strength range of the associated reference signal is simulated on the channel link using PDCCHs with different CCE aggregation levels to transmit a DCI of one or a range of DCI sizes, and the BLER is sufficiently small (at least less than 2%). As shown in Table 2, the minimum signal strength required for reliable transmission of three different DCI sizes on PDCCHs with different CCE ALs is T. i,Size1 ~T i,Size3 Let i = 0, 1, 2, 3, 4, corresponding to CCE AL1, CCE AL2, CCEAL4, CCE AL8, and CCE AL16 respectively. The minimum signal strength T... i,Size1 ~T i,Size3 i = 0, 1, 2, 3, 4, which are used as preset signal strengths.

[0109] Table 2

[0110] Preset signal strength DCI size 1 DCI size 2 DCI size 3 CCE AL 1 <![CDATA[T 0,size1 ]]> <![CDATA[T 0,size2 ]]> <![CDATA[T 0,size3 ]]> CCE AL 2 <![CDATA[T 1,size1 ]]> <![CDATA[T 1,size2 ]]> <![CDATA[T 1,size3 ]]> CCE AL 4 <![CDATA[T 2,size1 ]]> <![CDATA[T 2,size2 ]]> <![CDATA[T 2,size3 ]]> CCE AL 8 <![CDATA[T 3,size1 ]]> <![CDATA[T 3,size2 ]]> <![CDATA[T 3,size3 ]]> CCE AL 16 <![CDATA[T 4,size1 ]]> <![CDATA[T 4,size2 ]]> <![CDATA[T 4,size3 ]]>

[0111] Among them, Table 2 obtained through simulation can be saved in advance on the terminal device, and a fitting formula can be derived to calculate in real time the minimum reference signal strength threshold required for PDCCH transmission of different CCE ALs under a certain DCI size, which can be used as the preset signal strength.

[0112] It should be noted that using the quasi-co-location SSB as the associated reference signal and the quasi-co-location TRS as the associated reference signal yields different signal strengths for the associated reference signal, which are then used as preset signal strengths. In other words, both the simulation and measurement of the associated reference signal must be based on the same signal.

[0113] By using the associated reference signal strength under various conditions as the preset signal strength and comparing the signal strength under different conditions, the accuracy of the comparison results is improved, thereby optimizing the detection sequence, avoiding useless blind detection processing by the terminal equipment, and saving resources.

[0114] Based on this, in some embodiments, such as Figure 4 As shown, prior to S150 above, the method may further include:

[0115] S141. Sort each channel set in descending order of the expected downlink control information size to obtain a second detection order for at least one channel set.

[0116] It can be understood that the larger the expected downlink control information size of the physical downlink control channel, the higher the transmission reliability, but the fewer terminal devices the base station can schedule simultaneously.

[0117] In this way, each channel set is sorted in descending order of the expected downlink control information size, taking into full account the reliability of the physical downlink control channel and setting the detection order of at least one channel set.

[0118] Based on this, in some embodiments, such as Figure 5 As shown, prior to S150 above, the method may further include:

[0119] S142. Sort each channel set according to the expected downlink control information size of each channel set in ascending order to obtain the second detection order of at least one channel set.

[0120] It can be understood that the smaller the expected downlink control information size of the physical downlink control channel, the more terminal devices the base station can schedule simultaneously, but the higher the transmission reliability.

[0121] In this way, each channel set is sorted according to the expected downlink control information size in ascending order, taking into full account the number of terminal devices that can be simultaneously scheduled by the physical downlink control channel, and setting the detection order of at least one channel set.

[0122] Based on this, in some embodiments, the downlink control information includes downlink control information and uplink control information, and the preset values ​​include a first value and a second value; such as Figure 6 As shown, in S150 above, if the number of detected downlink control information is not less than a preset value, the detection of physical downlink control channels in each channel set is stopped. Specifically, this may include:

[0123] S151. Obtain the communication mode of the physical downlink control channel in each channel set;

[0124] S152. When the communication mode is FDD and the number of downlink control information and uplink control information detected is not less than the first value, the detection of physical downlink control channels in each channel set is stopped.

[0125] S153. When the communication mode is TDD and the number of downlink control information detected is not less than the first value and the number of uplink control information detected is not less than the second value, the detection of physical downlink control channels in each channel set is stopped.

[0126] Here, downlink control information can be downlink control information from the base station to the terminal device (Downlink DCI, DL DCI), and uplink control information can be downlink control information from the terminal device to the base station (Uplink DCI, UL DCI). Within a time slot, as shown in Table 3, in FDD mode there is a maximum of one UL DCI and one DL DCI, and in TDD mode there are a maximum of two UL DCIs and one DL DCI. After PDCCH sorting, the PDCCH carrying the most likely DCI is processed first. Once the expected DCI is detected, the decoding of the current time slot's PDCCH ends, and unprocessed PDCCHs are no longer decoded. Therefore, when the target time slot is a single time slot, within that time slot, the first value can be 1, and the second value can be 2.

[0127] Table 3

[0128] Communication mode UL DCI DL DCI FDD 1 1 TDD 2 1

[0129] In this way, different preset values ​​can be set according to different communication modes as conditions for stopping the detection, which improves the flexibility of the detection.

[0130] Based on this, in some embodiments, the above-mentioned S152 may specifically include:

[0131] Upon detecting downlink control information of the first target, the uplink and downlink identifiers of the downlink control information of the first target are obtained;

[0132] When the uplink / downlink identifier of the first target downlink control information indicates that the first target downlink control information is downlink control information, the physical downlink control channel that transmits downlink control information is removed from each channel set.

[0133] When the communication mode is FDD and the uplink / downlink identifier of the first target downlink control information indicates that the first target downlink control information is uplink control information, the physical downlink control channel that transmits uplink control information is removed from each channel set.

[0134] If the number of downlink control information and uplink control information detected is not less than the first value, the detection of physical downlink control channels in each channel set is stopped.

[0135] Here, the uplink and downlink identifiers can indicate whether the DCI is a UL DCI or a DL DCI. For example, the uplink and downlink identifiers are the DCI size and the DCI identifier.

[0136] In some embodiments, during the PDCCH decoding process, as long as a DCI with a correct CRC is received, the DCI can be determined as either a ULDCI or a DL DCI based on its corresponding UL or DL ​​DCI size (DCI format 0_1 ​​or DCI format 1_1 uses different DCI sizes); or, if the DL DCI sizes are the same (DCI format 0_0 and DCI format 1_0 use the same DCI size), the DCI can be determined as either a UL DCI or a DL DCI based on the DCI identifier carried by the DCI.

[0137] In some embodiments, if a DL DCI with correct CRC and corresponding to DCI format 1_1 is received, all remaining PDCCHs corresponding to DCI format 1_1 can be deleted from each channel set; if a UL DCI with correct CRC and corresponding to DCI format 0_1 ​​is received during FDD, all remaining PDCCHs corresponding to DCI format 0_1 ​​can be deleted from each channel set. Otherwise, if a UL DCI and a DL DCI are received during FDD, all remaining PDCCHs that have not yet been detected and decoded are no longer processed, and the current PDCCH blind detection process ends.

[0138] In this way, the uplink and downlink identifiers of the DCI can be used to determine whether the DCI is a UL DCI or a DL DCI. Then, when the communication mode is FDD and one UL DCI and one DL DCI are detected, the blind detection process ends. This more accurately triggers the blind detection termination condition, which not only effectively detects the DCI, but also avoids the terminal device from performing useless blind detection processing, thus saving resources.

[0139] Based on this, in some embodiments, the above-mentioned S153 may specifically include:

[0140] Upon detecting downlink control information of the first target, the uplink and downlink identifiers of the downlink control information of the first target are obtained;

[0141] When the uplink / downlink identifier of the first target downlink control information indicates that the first target downlink control information is downlink control information, the physical downlink control channel that transmits downlink control information is removed from each channel set.

[0142] When the communication mode is TDD and the uplink / downlink identifier of the first target downlink control information indicates that the first target downlink control information is uplink control information, the physical downlink control channel following the target physical downlink control channel that transmits the first target downlink control information in each channel set is detected according to the first detection order and the second detection order of at least one channel set to determine whether the physical downlink control channel includes downlink control information.

[0143] If downlink control information of the second target is detected, the uplink and downlink identifiers of the downlink control information of the second target are obtained;

[0144] When the uplink / downlink identifier of the second target downlink control information indicates that the second target downlink control information is uplink control information, the physical downlink control channel that transmits uplink control information is removed from each channel set;

[0145] If the number of downlink control information detected is not less than the first value and the number of uplink control information detected is not less than the second value, the detection of physical downlink control channels in each channel set is stopped.

[0146] Here, the uplink and downlink identifiers can indicate whether the DCI is a UL DCI or a DL DCI. For example, the uplink and downlink identifiers are the DCI size and the DCI identifier.

[0147] In some embodiments, during the PDCCH decoding process, as long as a DCI with a correct CRC is received, the DCI can be determined as either ULDCI or DL ​​DCI based on its corresponding uplink or DL ​​DCI size (DCI format 0_1 ​​or DCI format 1_1 uses different DCI sizes); or, if the uplink DL DCI size is the same (DCI format 0_0 and DCI format 1_0 use the same DCI size), the DCI can be determined as either UL DCI or DL ​​DCI based on the DCI identifier carried by the DCI.

[0148] In some embodiments, if a DL DCI with correct CRC and corresponding to DCI format 1_1 is received, all remaining PDCCHs corresponding to DCI format 1_1 can be deleted from each channel set; if two UL DCIs with correct CRC and corresponding to DCI format 0_1 ​​are received during TDD, all remaining PDCCHs corresponding to DCI format 0_1 ​​can be deleted from each channel set. Otherwise, if two UL DCIs and one downlink DCI are received during TDD, all remaining PDCCHs that have not yet been detected and decoded are no longer processed, and the current PDCCH blind detection process ends.

[0149] In this way, the uplink and downlink identifiers of the DCI can be used to determine whether the DCI is a UL DCI or a DL DCI. Then, when the communication mode is TDD and two UL DCIs and one downlink DCI are detected, the blind detection process ends. This more accurately triggers the blind detection termination condition, which not only effectively detects the DCI, but also avoids the terminal device from performing useless blind detection processing, thus saving resources.

[0150] In the embodiments provided in this application, such as Figure 7 As shown, the method for physical downlink control channel detection may specifically include the following process:

[0151] S210. Obtain the aggregation level, expected downlink control information size, and first signal strength of at least one physical downlink control channel within the target time slot;

[0152] S220. Determine the detection order of at least one physical downlink control channel;

[0153] S230. Receive physical downlink control channel symbols according to the detection order of at least one physical downlink control channel;

[0154] S240. Using the received physical downlink control channel symbols, perform physical downlink control channel estimation and demodulation;

[0155] S250. Decode the physical downlink control channel based on the demodulation results to obtain the uplink and downlink identifiers of the physical downlink control channel;

[0156] S260. Based on the uplink and downlink indicators, determine whether the detected UL DCI and DL DCI meet the preset values;

[0157] S270. If both UL DCI and DL DCI meet the preset values, turn off RF and end PDCCH processing to end the blind inspection process.

[0158] In the embodiments provided in this application, the sorting module first prioritizes the aggregation level based on the channel quality prediction of the reference signal. Then, it sorts the current PDCCHs according to the preferred aggregation level, prioritizing the PDCCHs of the corresponding aggregation level that are most likely to be used by the base station to carry DCIs under the current channel conditions. In the PDCCH blind detection end judgment module, it determines whether the PDCCH detection termination condition is met based on the currently received cumulative valid DCIs. Once the expected number of DCIs are received, the PDCCH detection and decoding can be terminated, and the process can directly jump to power saving, removing PDCCHs that do not need decoding, turning off the RF, and ending the PDCCH processing.

[0159] The embodiments provided in this application significantly shorten the PDCCH processing time. For PDCCHs of different aggregation levels within a time slot, the PDCCH most likely to be scheduled for DCI is identified and processed first. After obtaining the scheduled DCI, the processing of the remaining PDCCHs of the corresponding DCI size is removed, or even the blind detection of all PDCCHs in the current time slot is terminated, reducing a large number of unnecessary PDCCH blind detection processes. Normally, it is only after the PDCCH blind detection is completed and the DCI decoding is finished that it can be determined whether there is PDSCH or PUSCH scheduling and whether RF reception can be turned off. The embodiments provided in this application accelerate the PDCCH blind detection process through simple and fast PDCCH sorting, allowing RF to be turned off earlier and resulting in better power saving performance. The embodiments provided in this application are applicable to PDCCH blind detection of all NR terminals, including RedCap, NTN, and other devices using the NR protocol. The PDCCHs are sorted according to CCE aggregation level, and PDCCHs of a certain CCE aggregation level are processed first. This also applies to LTE terminal devices.

[0160] In the embodiments provided in this application, before blind detection of all PDCCHs, the aggregation level of the PDCCH most likely to be scheduled DCI is estimated by associating with the reference signal channel quality, and all PDCCHs are sorted according to the aggregation level. The PDCCHs carrying the most likely DCI scheduling are processed first. In this way, as long as a valid number of DCIs are detected, the blind detection of PDCCH ends, which greatly reduces the processing time of blind detection of PDCCH, determines in advance whether RF can be turned off, reduces UE power consumption, and significantly improves power saving performance.

[0161] Understandably, under favorable channel conditions, a PDCCH with a lower CCE aggregation level can reliably transmit DCI. Under poor channel conditions, a PDCCH with a higher CCE aggregation level is required for reliable DCI transmission. To utilize PDCCH scheduling resources more effectively, base stations prioritize using PDCCHs with different CCE aggregation levels to carry DCI scheduling information under varying channel conditions.

[0162] Based on the physical downlink control channel detection method provided in the above embodiments, this application also provides specific implementations of a physical downlink control channel detection apparatus. Please refer to the following embodiments.

[0163] First see Figure 8 The physical downlink control channel detection apparatus 300 provided in this application embodiment includes:

[0164] The acquisition module 310 is used to acquire at least one channel set within the target time slot, as well as the aggregation level and first signal strength of the physical downlink control channel in each channel set;

[0165] The comparison module 320 is used to compare the first signal strength with multiple preset signal strengths to obtain the target strength interval where the first signal strength of the physical downlink control channel in each channel set is located. The interval endpoint values ​​of the target strength interval include at least one of the multiple preset signal strengths.

[0166] The determining module 330 is used to determine the target order of the preset aggregation levels corresponding to the target intensity range based on the relationship information between the intensity range and the preset aggregation level. The preset aggregation level includes the aggregation level of the physical downlink control channel in each channel set.

[0167] The sorting module 340 is used to sort the physical downlink control channels in each channel set according to the target order based on the aggregation level of the physical downlink control channels in each channel set, so as to obtain the first detection order of the physical downlink control channels in each channel set.

[0168] The detection module 350 is used to detect whether the physical downlink control channel in each channel set includes downlink control information according to a first detection order and a second detection order of at least one channel set. If the number of downlink control information detected in the target time slot is not less than a preset value, the detection of the physical downlink control channel in each channel set is stopped.

[0169] Based on this, in some embodiments, the acquisition module 310 can be specifically used for:

[0170] Obtain the aggregation level, desired downlink control information size, and first signal strength of at least one physical downlink control channel within the target time slot;

[0171] Physical downlink control channels with the same expected downlink control information size are grouped into the same channel set to obtain at least one channel set.

[0172] Based on this, in some embodiments, the comparison module 320 can specifically be used for:

[0173] The second signal strength is obtained when transmitting downlink control information of multiple preset downlink control information sizes using a physical downlink control channel with a preset aggregation level, wherein the preset signal strength includes the second signal strength;

[0174] By comparing the first signal strength of the physical downlink control channel in each channel set with the second signal strength when transmitting downlink control information of the desired downlink control information size using the physical downlink control channel with a preset aggregation level, the target strength range of the first signal strength of the physical downlink control channel in each channel set is obtained.

[0175] Among them, the multiple preset downlink control information sizes include the expected downlink control information size, and the target expected downlink control information size is the same as the expected downlink control information size of each channel set.

[0176] Based on this, in some embodiments, the device 300 may further include:

[0177] The sorting module 340 is further configured to sort each channel set in descending order of the expected downlink control information size of each channel set before detecting whether the physical downlink control channel in each channel set includes downlink control information according to the first detection order and the second detection order of at least one channel set, so as to obtain the second detection order of at least one channel set.

[0178] Based on this, in some embodiments, the device 300 may further include:

[0179] The sorting module 340 is further configured to sort each channel set in ascending order of the expected downlink control information size of each channel set before detecting whether the physical downlink control channel in each channel set includes downlink control information according to the first detection order and the second detection order of at least one channel set, so as to obtain the second detection order of at least one channel set.

[0180] Based on this, in some embodiments, the downlink control information includes downlink control information and uplink control information, and the preset values ​​include a first value and a second value; the detection module 350 can specifically be used for:

[0181] Obtain the communication mode of the physical downlink control channel in each channel set;

[0182] When the communication mode is FDD and the number of downlink control information and uplink control information detected is not less than the first value, the detection of physical downlink control channels in each channel set is stopped.

[0183] When the communication mode is TDD, and the number of downlink control information detected is not less than the first value, and the number of uplink control information detected is not less than the second value, the detection of physical downlink control channels in each channel set is stopped.

[0184] Based on this, in some embodiments, the detection module 350 can specifically be used for:

[0185] Upon detecting downlink control information of the first target, the uplink and downlink identifiers of the downlink control information of the first target are obtained;

[0186] When the uplink / downlink identifier of the first target downlink control information indicates that the first target downlink control information is downlink control information, the physical downlink control channel that transmits downlink control information is removed from each channel set.

[0187] When the communication mode is FDD and the uplink / downlink identifier of the first target downlink control information indicates that the first target downlink control information is uplink control information, the physical downlink control channel that transmits uplink control information is removed from each channel set.

[0188] If the number of downlink control information and uplink control information detected is not less than the first value, the detection of physical downlink control channels in each channel set is stopped.

[0189] Based on this, in some embodiments, the detection module 350 can specifically be used for:

[0190] Upon detecting downlink control information of the first target, the uplink and downlink identifiers of the downlink control information of the first target are obtained;

[0191] When the uplink / downlink identifier of the first target downlink control information indicates that the first target downlink control information is downlink control information, the physical downlink control channel that transmits downlink control information is removed from each channel set.

[0192] When the communication mode is TDD and the uplink / downlink identifier of the first target downlink control information indicates that the first target downlink control information is uplink control information, the physical downlink control channel following the target physical downlink control channel that transmits the first target downlink control information in each channel set is detected according to the first detection order and the second detection order of at least one channel set to determine whether the physical downlink control channel includes downlink control information.

[0193] If downlink control information of the second target is detected, the uplink and downlink identifiers of the downlink control information of the second target are obtained;

[0194] When the uplink / downlink identifier of the second target downlink control information indicates that the second target downlink control information is uplink control information, the physical downlink control channel that transmits uplink control information is removed from each channel set;

[0195] If the number of downlink control information detected is not less than the first value and the number of uplink control information detected is not less than the second value, the detection of physical downlink control channels in each channel set is stopped.

[0196] Each module of the physical downlink control channel detection apparatus provided in this application embodiment can realize the functions of each step of the physical downlink control channel detection method provided above, and can achieve its corresponding technical effects. For the sake of brevity, it will not be described in detail here.

[0197] Based on the same inventive concept, embodiments of this application also provide an electronic device.

[0198] Figure 9 A schematic diagram of the hardware structure of the electronic device provided in an embodiment of this application is shown.

[0199] An electronic device may include a processor 401 and a memory 402 storing computer program instructions.

[0200] Specifically, the processor 401 may include a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits that can be configured to implement the embodiments of this application.

[0201] Memory 402 may include mass storage for data or instructions. For example, and not limitingly, memory 402 may include a hard disk drive (HDD), floppy disk drive, flash memory, optical disk, magneto-optical disk, magnetic tape, or Universal Serial Bus (USB) drive, or a combination of two or more of these. Where appropriate, memory 402 may include removable or non-removable (or fixed) media. Where appropriate, memory 402 may be internal or external to the integrated gateway disaster recovery device. In a particular embodiment, memory 402 is non-volatile solid-state memory.

[0202] Memory may include read-only memory (ROM), random access memory (RAM), disk storage media devices, optical storage media devices, flash memory devices, and electrical, optical, or other physical / tangible memory storage devices. Therefore, typically, memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described with reference to the method according to one aspect of this disclosure.

[0203] The processor 401 implements any of the physical downlink control channel detection methods in the above embodiments by reading and executing computer program instructions stored in the memory 402.

[0204] In one example, the electronic device may also include a communication interface 403 and a bus 410. For example, Figure 9 As shown, the processor 401, memory 402, and communication interface 403 are connected through bus 410 and complete communication with each other.

[0205] The communication interface 403 is mainly used to realize communication between various modules, devices, units and / or equipment in the embodiments of this application.

[0206] Bus 410 includes hardware, software, or both, that couples components of an electronic device together. For example, and not limitingly, the bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Extended Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a Hyper Transport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an Infinite Bandwidth Interconnect, a Linear Predictive Coding (LPC) bus, a memory bus, a MicroChannel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (Peripheral Component Interconnect-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association Local Bus (VESA Local Bus, VLB) bus, or other suitable buses, or a combination of two or more of these. Where appropriate, bus 410 may include one or more buses. Although specific buses are described and illustrated in the embodiments of this application, this application contemplates any suitable bus or interconnect. The electronic device can perform the physical downlink control channel detection method in the embodiments of the present invention, thereby implementing the physical downlink control channel detection method described above.

[0207] Furthermore, in conjunction with the physical downlink control channel detection method in the above embodiments, this application embodiment can provide a computer storage medium for implementation. The computer storage medium stores computer program instructions; when these computer program instructions are executed by a processor, they implement any of the physical downlink control channel detection methods in the above embodiments.

[0208] This application also provides a computer program product in which the instructions, when executed by a processor of an electronic device, cause the electronic device to perform various processes implementing any of the above-described embodiments of the physical downlink control channel detection method.

[0209] It should be clarified that this application is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of this application is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications, and additions, or change the order of steps, after understanding the spirit of this application.

[0210] The functional blocks shown in the above-described block diagram can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, they can be, for example, electronic circuits, application-specific integrated circuits (ASICs), appropriate firmware, plug-ins, function cards, etc. When implemented in software, the elements of this application are programs or code segments used to perform the required tasks. Programs or code segments can be stored on a machine-readable medium or transmitted over a transmission medium or communication link via data signals carried on a carrier wave. "Machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, read-only memory (ROM), flash memory, erasable read-only memory (EROM), floppy disks, compact disc read-only memory (CD-ROM), optical disks, hard disks, fiber optic media, radio frequency (RF) links, etc. Code segments can be downloaded via computer networks such as the Internet, intranets, etc.

[0211] It should also be noted that the exemplary embodiments mentioned in this application describe methods or systems based on a series of steps or apparatus. However, this application is not limited to the order of the above steps; that is, the steps can be performed in the order mentioned in the embodiments, or in a different order, or several steps can be performed simultaneously.

[0212] The aspects of this disclosure have been described above with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It should be understood that each block in the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus to produce a machine such that these instructions, executable via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions / actions specified in one or more blocks of the flowchart illustrations and / or block diagrams. Such a processor can be, but is not limited to, a general-purpose processor, a special-purpose processor, a special application processor, or a field-programmable logic circuit. It is also understood that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can also be implemented by special-purpose hardware performing the specified functions or actions, or can be implemented by a combination of special-purpose hardware and computer instructions.

[0213] The above are merely specific embodiments of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.

Claims

1. A method for detecting a physical downlink control channel, characterized in that, include: Obtain at least one channel set within the target time slot, and the aggregation level and first signal strength of the physical downlink control channel in each channel set; By comparing the first signal strength with multiple preset signal strengths, a target strength interval is obtained where the first signal strength of the physical downlink control channel in each of the channel sets is located. The endpoint values ​​of the target strength interval include at least one of the multiple preset signal strengths. Based on the relationship information between the intensity range and the preset aggregation level, the target order of the preset aggregation level corresponding to the target intensity range is determined, and the preset aggregation level includes the aggregation level of the physical downlink control channel in each channel set; Based on the aggregation level of the physical downlink control channels in each channel set, the physical downlink control channels in each channel set are sorted according to the target order to obtain the first detection order of the physical downlink control channels in each channel set; In accordance with the first detection order and the second detection order of the at least one channel set, it is detected whether the physical downlink control channel in each channel set includes downlink control information. If the number of downlink control information detected in the target time slot is not less than a preset value, the detection of the physical downlink control channel in each channel set is stopped.

2. The method for detecting the physical downlink control channel according to claim 1, characterized in that, The step of obtaining at least one channel set within the target time slot includes: Obtain the aggregation level, desired downlink control information size, and first signal strength of at least one physical downlink control channel within the target time slot; Physical downlink control channels with the same expected downlink control information size are grouped into the same channel set to obtain at least one channel set.

3. The method for detecting the physical downlink control channel according to claim 2, characterized in that, The step of comparing the first signal strength with multiple preset signal strengths to obtain the target strength range of the first signal strength of the physical downlink control channel in each of the channel sets includes: The second signal strength is obtained when transmitting downlink control information of multiple preset downlink control information sizes using the physical downlink control channel of the preset aggregation level, wherein the preset signal strength includes the second signal strength; By comparing the first signal strength of the physical downlink control channel in each of the channel sets with the second signal strength when transmitting downlink control information of the desired downlink control information size using the physical downlink control channel of the preset aggregation level, the target strength range in which the first signal strength of the physical downlink control channel in each of the channel sets is located is obtained. The plurality of preset downlink control information sizes include the expected downlink control information size, and the target expected downlink control information size is the same as the expected downlink control information size of each channel set.

4. The method for detecting the physical downlink control channel according to claim 2, characterized in that, Before detecting whether the physical downlink control channel in each of the at least one channel set includes downlink control information according to the first detection order and the second detection order of the at least one channel set, the method further includes: The channels are sorted in descending order of the expected downlink control information size for each channel set to obtain a second detection order for the at least one channel set.

5. The method for detecting the physical downlink control channel according to claim 2, characterized in that, Before detecting whether the physical downlink control channel in each of the at least one channel set includes downlink control information according to the first detection order and the second detection order of the at least one channel set, the method further includes: The channels are sorted in ascending order of the expected downlink control information size for each channel set to obtain a second detection order for the at least one channel set.

6. The method for detecting the physical downlink control channel according to claim 1, characterized in that, The downlink control information includes downlink control information and uplink control information, and the preset value includes a first value and a second value; the step of suspending the detection of physical downlink control channels in each channel set when the number of downlink control information detected in the target time slot is not less than the preset value includes: Obtain the communication mode of the physical downlink control channel in each of the channel sets; When the communication mode is FDD and the number of downlink control information and uplink control information detected is not less than the first value, the detection of physical downlink control channels in each channel set is stopped. When the communication mode is TDD, and the number of downlink control information detected is not less than the first value, and the number of uplink control information detected is not less than the second value, the detection of physical downlink control channels in each channel set is stopped.

7. The method for detecting the physical downlink control channel according to claim 6, characterized in that, The step of suspending the detection of physical downlink control channels in each channel set when the communication mode is FDD and the number of detected downlink control information and uplink control information is not less than the first value includes: Upon detecting the first target downlink control information, the uplink and downlink identifiers of the first target downlink control information are obtained; When the uplink / downlink identifier of the first target downlink control information indicates that the first target downlink control information is the downlink control information, the physical downlink control channel transmitting the downlink control information is deleted from each of the channel sets; When the communication mode is FDD and the uplink / downlink identifier of the first target downlink control information indicates that the first target downlink control information is the uplink control information, the physical downlink control channel transmitting the uplink control information is deleted from each of the channel sets. If the number of downlink control information and uplink control information detected is not less than the first value, the detection of physical downlink control channels in each channel set is stopped.

8. The method for detecting the physical downlink control channel according to claim 6, characterized in that, When the communication mode is TDD, and the number of downlink control information detected is not less than the first value, and the number of uplink control information detected is not less than the second value, the detection of physical downlink control channels in each channel set is suspended, including: Upon detecting the first target downlink control information, the uplink and downlink identifiers of the first target downlink control information are obtained; When the uplink / downlink identifier of the first target downlink control information indicates that the first target downlink control information is the downlink control information, the physical downlink control channel transmitting the downlink control information is deleted from each of the channel sets; When the communication mode is TDD and the uplink / downlink identifier of the first target downlink control information indicates that the first target downlink control information is the uplink control information, the physical downlink control channel following the target physical downlink control channel that transmits the first target downlink control information in each channel set is detected according to the first detection order and the second detection order of the at least one channel set to determine whether the physical downlink control channel after the target physical downlink control channel that transmits the first target downlink control information in each channel set includes downlink control information. Upon detecting the downlink control information of the second target, the uplink and downlink identifiers of the downlink control information of the second target are obtained; If the uplink / downlink identifier of the second target downlink control information indicates that the second target downlink control information is the uplink control information, then the physical downlink control channel transmitting the uplink control information is deleted from each of the channel sets; If the number of downlink control information is not less than the first value and the number of uplink control information is not less than the second value, the detection of physical downlink control channels in each channel set is stopped.

9. A device for detecting a physical downlink control channel, characterized in that, include: The acquisition module is used to acquire at least one channel set within the target time slot, as well as the aggregation level and first signal strength of the physical downlink control channel in each channel set; The comparison module is used to compare the first signal strength with a plurality of preset signal strengths to obtain the target strength interval in which the first signal strength of the physical downlink control channel in each of the channel sets is located, wherein the interval endpoint value of the target strength interval includes at least one of the plurality of preset signal strengths; The determining module is used to determine the target order of the preset aggregation levels corresponding to the target intensity range based on the relationship information between the intensity range and the preset aggregation level, wherein the preset aggregation level includes the aggregation level of the physical downlink control channel in each channel set; The sorting module is used to sort the physical downlink control channels in each channel set according to the target order based on the aggregation level of the physical downlink control channels in each channel set, so as to obtain the first detection order of the physical downlink control channels in each channel set. The detection module is configured to detect whether the physical downlink control channel in each of the channel sets includes downlink control information according to the first detection order and the second detection order of the at least one channel set, and to stop the detection of the physical downlink control channel in each channel set if the number of downlink control information detected in the target time slot is not less than a preset value.

10. An electronic device, characterized in that, The device includes: a processor and a memory storing computer program instructions; When the processor executes the computer program instructions, it implements the physical downlink control channel detection method as described in any one of claims 1-8.

11. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer program instructions that, when executed by a processor, implement the physical downlink control channel detection method as described in any one of claims 1-8.

12. A computer program product, characterized in that, When the instructions in the computer program product are executed by the processor of the electronic device, the electronic device is able to perform the physical downlink control channel detection method as described in any one of claims 1-8.

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