Control Channel Receiving, Transmitting Method and Apparatus, Communication Apparatus, and Storage Medium

Abstract

The present disclosure relates to a control channel receiving and transmitting method and apparatus, a communication device, and a storage medium. The control channel receiving method includes determining a first time domain symbol corresponding to a cell-specific reference signal (CRS), and determining whether to receive a new radio physical downlink control channel (NR PDCCH) in the first time domain symbol based on at least the configuration information of the CRS. According to the present disclosure, a terminal can determine a first time domain symbol corresponding to a resource occupied by the CRS, and determine whether to receive the NR PDCCH in the first time domain symbol based on the configuration information of the CRS. When it is determined that the number of resource elements (REs) occupied by the CRS in the first time domain symbol is relatively large, the terminal may not desire to receive the NR PDCCH in the first time domain symbol, and the network device also does not transmit the NR PDCCH to the terminal in the first time domain symbol, thereby avoiding unnecessary consumption generated when the terminal receives the NR PDCCH in a time domain symbol with relatively few REs corresponding to the NR PDCCH.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technologies, and specifically, to a control channel receiving method, a control channel transmitting method, a control channel receiving device, a control channel transmitting device, a communication device, and a computer-readable storage medium.

Background Art

[0002] Currently, in the scene of DSS (Dynamic Spectrum Sharing), the LTE (Long Term Evolution) system and the NR (New Radio) system can coexist with the same spectrum resources. As a result, some information transmitted by the LTE system will interfere with the NR system.

[0003] For example, when the RE (Resource Element) corresponding to the CRS (Cell-specific Reference Signal) transmitted by the LTE system competes with the RE corresponding to the NR PDCCH (Physical Downlink Control Channel), the corresponding NR PDCCH is punctured, and the terminal cannot receive the NR PDCCH with the competing RE. Therefore, the demodulation performance of the NR PDCCH deteriorates.

[0004] Also, in some scenes, for example, when the terminal is at the edge of the cell, in order to receive the CRS corresponding to multiple cells, the interference to the NR PDCCH becomes stronger.

Summary of the Invention

Problems to be Solved by the Invention

[0005] In view of this, embodiments of the present disclosure provide a control channel receiving method, a control channel transmitting method, a control channel receiving apparatus, a control channel transmitting apparatus, a communication apparatus, and a computer-readable storage medium to solve the technical problems in the related art.

Means for Solving the Problems

[0006] According to a first aspect of an embodiment of the present disclosure, there is provided a control channel receiving method applied to a terminal, the method including: determining a first time-domain symbol corresponding to a cell-specific reference signal (CRS), where the first time-domain symbol is part or all of the time-domain symbols in the time-domain resource where the CRS is located; and determining, based at least on the setting information of the CRS, whether to receive a new radio physical downlink control channel (NR PDCCH) using the first time-domain symbol.

[0007] According to a second aspect of an embodiment of the present disclosure, there is provided a control channel transmitting method applied to a network device, the method including: determining a first time-domain symbol corresponding to a cell-specific reference signal (CRS) set for a terminal, where the first time-domain symbol is part or all of the time-domain symbols in the time-domain resource where the CRS is located; and determining, based at least on the setting information of the CRS, whether to transmit a new radio physical downlink control channel (NR PDCCH) to the terminal using the first time-domain symbol.

[0008] According to a third aspect of an embodiment of the present disclosure, there is provided a control channel receiving apparatus applied to a terminal, the apparatus including a processing module configured to determine a first time-domain symbol corresponding to a cell-specific reference signal (CRS), where the first time-domain symbol is part or all of the time-domain symbols in the time-domain resource where the CRS is located, and determine, based at least on the setting information of the CRS, whether to receive a new radio physical downlink control channel (NR PDCCH) using the first time-domain symbol.

[0009] According to a fourth aspect of the embodiments of the present disclosure, a control channel transmission method applied to a network device is provided. The method includes determining a first time-domain symbol corresponding to a cell-specific reference signal (CRS) set for a terminal, where the first time-domain symbol is part or all of the time-domain symbols in the time-domain resource where the CRS is located, and including a processing module configured to determine whether to transmit a new radio physical downlink control channel (NR PDCCH) to the terminal using the first time-domain symbol based at least on the setting information of the CRS.

[0010] According to a fifth aspect of the embodiments of the present disclosure, a communication device is provided. The communication device includes a processor and a memory for storing a computer program. When the computer program is executed by the processor, the above control channel reception method is realized.

[0011] According to a sixth aspect of the embodiments of the present disclosure, a communication device is provided. The communication device includes a processor and a memory for storing a computer program. When the computer program is executed by the processor, the above control channel transmission method is realized.

[0012] According to a seventh aspect of the embodiments of the present disclosure, a computer-readable storage medium storing a computer program is provided. When the computer program is executed by a processor, the steps of the above control channel reception method are realized.

[0013] According to an eighth aspect of the embodiments of the present disclosure, a computer-readable storage medium storing a computer program is provided. When the computer program is executed by a processor, the steps of the above control channel transmission method are realized.

Advantages of the Invention

[0014] According to an embodiment of the present disclosure, a terminal can determine a first time-domain symbol corresponding to a resource occupied by a CRS, and thereby determine whether it desires to receive an NR PDCCH using the first time-domain symbol based on the CRS configuration information. If it is determined based on the CRS configuration information that the number of REs occupied by the CRS in the first time-domain symbol is relatively large, the terminal may not desire to receive the NR PDCCH using the first time-domain symbol, and the network device also does not transmit the NR PDCCH to the terminal using the first time-domain symbol, thereby avoiding unnecessary consumption that occurs when the terminal receives the NR PDCCH using a time-domain symbol in which the number of REs corresponding to the NR PDCCH is relatively small.

Brief Description of the Drawings

[0015] To more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings that need to be used in the following description of the embodiments are briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and those skilled in the art can obtain other drawings based on these drawings without creative efforts.

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Embodiments for Carrying Out the Invention

[0016] The following, in combination with the drawings in the embodiments of the present disclosure, clearly and completely describes the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present disclosure without creative efforts shall fall within the protection scope of the present disclosure.

[0017] The terms used in the embodiments of the present disclosure are for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present disclosure. Unless otherwise clearly indicated in the context, the singular forms "a (one kind)" and "the" used in the embodiments of the present disclosure and the appended claims include the plural forms. In addition, the term "and / or" used in this specification refers to and includes any or all possible combinations of one or more of the listed related items.

[0018] In the embodiments of the present disclosure, various information is described using terms such as first, second, third, etc., but this information should not be limited to these terms. These terms are used to distinguish the same type of information from each other. For example, unless departing from the scope of the embodiments of the present disclosure, the first information may be referred to as the second information, and similarly, the second information may be referred to as the first information. Depending on the context, the term "case" used here may be understood as "when...", "during...", or "in response to a decision".

[0019] For the sake of simplicity and ease of understanding, the terms used when this specification characterizes the magnitude relationship are "greater than" or "less than", "higher than" or "lower than". As can be understood by those skilled in the art, the term "greater than" includes the meaning of "equal to or greater than", the term "less than" includes the meaning of "equal to or less than", the term "higher than" includes the meaning of "equal to or higher than", and the term "lower than" includes the meaning of "equal to or lower than".

[0020] FIG. 1 is a schematic flowchart of a control channel receiving method according to an embodiment of the present disclosure. The control channel receiving method shown in this embodiment is applicable to a terminal, and the terminal includes, but is not limited to, communication devices such as mobile phones, tablets, wearable devices, sensors, and Internet of Things devices. The terminal can communicate with a network device, and the network device includes, but is not limited to, network devices in communication systems such as 4G, 5G, and 6G, for example, base stations, core networks, and the like.

[0021] As shown in FIG. 1, the control channel receiving method may include the following steps S101 to S102.

[0022] In step S101, a first time-domain symbol (orthogonal frequency division multiplexing (OFDM) symbol) corresponding to a cell-specific reference signal (CRS) is determined, and the first time-domain symbol is part or all of the time-domain symbols in the time-domain resource where the CRS is located.

[0023] In step S102, it is determined whether to receive a new radio physical downlink control channel (NR PDCCH) using the first time-domain symbol based on at least the configuration information of the CRS.

[0024] Receiving an NR PDCCH using the first time-domain symbol may refer to detecting a PDCCH candidate using the first time-domain symbol. For example, determining that it is not desired to receive an NR PDCCH using the first time-domain symbol may refer to not detecting a PDCCH candidate using the first time-domain symbol, and determining that it is desired to receive an NR PDCCH using the first time-domain symbol may refer to detecting a PDCCH candidate using the first time-domain symbol.

[0025] FIG. 2 is a schematic diagram of resources occupied by CRS according to an embodiment of the present disclosure.

[0026] In one embodiment, taking as an example that the identifier (Cell ID) of the LTE cell is 0, and the LTE CRS supports four ports which are antenna port 0, antenna port 1, antenna port 2, and antenna port 3 respectively. The LTE CRS corresponding to each antenna port occupies different resources, and the resources occupied by the LTE CRS corresponding to the four antenna ports are overlapped to form a first resource.

[0027] As shown in FIG. 2, in one RB (Resource Block), it includes 14 symbols (e.g., orthogonal frequency division multiplexing (OFDM) symbols) in the time domain and 12 REs (Resource Elements) in the frequency domain. For example, in one symbol, the numbers of the REs from bottom to top are RE#0 to RE#11. As shown in FIG. 2, the CRS occupies the REs whose numbers are RE#0, RE#3, RE#6, and RE#9 in the 1st, 2nd, 5th, 8th, 9th, and 12th symbols.

[0028] The resources occupied by the CRS can be determined based on the pattern of the CRS. The CRS pattern indicates the resources occupied by the CRS. Since the PDSCH (Physical Downlink Shared Channel) can perform rate matching based on the resources of the CRS, it is also called the CRS rate matching (Rate Matching) pattern (CRS RM pattern).

[0029] Note that LTE CRS may be transmitted by an LTE network device, NR PDCCH may be transmitted by an NR network device, and the NR network device can determine the resources occupied by CRS. For example, it may be determined by communicating with the LTE network device or may be determined based on a protocol agreement.

[0030] Also, the terminal can determine the resources occupied by CRS based on a CRS pattern (which may be determined according to the indication of the network device or may be determined according to a predefined rule), and can determine the resources occupied by NR PDCCH based on the settings of the NR network device.

[0031] In the DSS scenario, since the LTE system and the NR system can coexist within the same spectrum, the CRS transmitted by the LTE system will interfere with the NR PDCCH. For example, the network device in the NR system can puncture the NR PDCCH based on the CRS pattern, and the terminal receives the NR PDCCH according to the situation where the NR PDCCH is punctured.

[0032] In some scenarios, for example, when the terminal is at the boundary of multiple LTE cells, it receives CRS corresponding to multiple LTE cells. Therefore, there are multiple corresponding CRS patterns, and the resources occupied by each CRS pattern are different. So, multiple CRS patterns occupy REs intensively, and thus collide with NR PDCCH on multiple REs.

[0033] When a network device punctures NR PDCCH based on multiple CRS patterns, a large amount of information carried by the NR PDCCH is lost, which affects the decoding effect. Also, since the number of CRS patterns to be considered is large, for a terminal to receive NR PDCCH, the REs corresponding to the NR PDCCH are overly punctured, so the terminal cannot accurately analyze the PDCCH, which affects the PDCCH demodulation performance and subsequently affects the resource scheduling.

[0034] FIG. 3 is a schematic diagram of resources occupied by another CRS according to an embodiment of the present disclosure.

[0035] As shown in FIG. 3, taking the example that the terminal is at the boundary of two LTE cells, the network device needs to puncture the NR PDCCH according to two CRS patterns. The first CRS pattern is as shown in FIG. 2, and the second CRS pattern occupies the REs with numbers RE#1, RE#4, RE#7, RE#10 at the first, second, fifth, eighth, ninth, and twelfth symbols in one RB.

[0036] For example, the control resource set (CORESET) corresponding to the terminal corresponds to the first, second, and third symbols in the time domain resource. In one RB range, since the CRS occupies 8 REs in each of the first and second symbols, it is necessary to puncture the NR PDCCH corresponding to 8 REs. As a result, in each of the first and second symbols, the NR PDCCH only occupies 4 REs. In this case, when the terminal receives the NR PDCCH in the first and second symbols, it is necessary to consider the case where the network device punctures the NR PDCCH based on two CRS patterns. The overhead becomes large and the information in the receivable NR PDCCH is extremely small.

[0037] In an embodiment of the present disclosure, the terminal can determine some or all of the time domain symbols corresponding to the resources occupied by the CRS. For example, it can be called the first time domain symbol, and the first time domain symbol may be a time domain symbol that overlaps with some or all of a CORESET (for example, the CORESET configured by the network device for the terminal). Further, based on the CRS configuration information, for example, based on the number of CRS patterns, the situation of the resources occupied by the CRS (such as the number of occupied REs, the occupancy rate, etc.), it is comprehensively determined whether it is desired to receive the NR PDCCH in the first time domain symbol.

[0038] For example, based on the CRS configuration information, if it is determined that the number of REs occupied by the CRS in the first time domain symbol is relatively large, the terminal may not desire to receive the NR PDCCH in the first time domain symbol, and the network device may not transmit the NR PDCCH to the terminal in the first time domain symbol, thereby avoiding unnecessary consumption caused by the terminal receiving the NR PDCCH in a time domain symbol with relatively few REs corresponding to the NR PDCCH.

[0039] In one embodiment, the CRS configuration information includes at least one of the number of CRS patterns, the number of ports corresponding to the CRS pattern, and the time-frequency resources occupied by the CRS (for example, REs, based on which the number of REs occupied by the CRS in the first time domain symbol and the first resource occupancy rate of the CRS in the first time domain symbol can be determined). Considering that the number of REs occupied by the CRS within different RB ranges is the same, the number of occupied REs can be evaluated by the number of REs occupied by the CRS within one RB range.

[0040] In one embodiment, the method further includes a step of transmitting, to a network device, capability information for indicating whether the terminal supports receiving an NR PDCCH in the first time domain symbol when the configuration information of the CRS satisfies a target configuration.

[0041] By reporting the capability information to the network device, the terminal can notify the network device whether it supports receiving an NR PDCCH in the first time domain symbol when the configuration information of the CRS satisfies the target configuration.

[0042] The target configuration includes, but is not limited to, that the number of CRS patterns is greater than or equal to a pattern number threshold, the number of resource elements (REs) occupied by the CRS in one RB corresponding to the first time domain symbol is greater than or equal to an RE number threshold, the first resource occupancy rate of the CRS occupying resource elements in one RB corresponding to the first time domain symbol is greater than or equal to a first occupancy rate threshold, and the second resource occupancy rate of the CRS in the CORESET of the NR PDCCH is greater than or equal to a second occupancy rate threshold.

[0043] For example, when the configuration information includes the number of CRS patterns, the target configuration may be that the number of CRS patterns is 2 or more. Therefore, based on the capability information, the network device can determine whether the terminal supports receiving an NR PDCCH in the first time domain symbol when the number of CRS patterns is 2 or more. If the terminal does not support receiving an NR PDCCH in the first time domain symbol, the network device may not need to transmit an NR PDCCH to the terminal in the first time domain symbol in the scene of the target configuration. If the terminal supports receiving an NR PDCCH in the first time domain symbol, the network device can transmit an NR PDCCH to the terminal in the first time domain symbol in the scene of the target configuration.

[0044] Also, in one embodiment, the network device can puncture the NR PDCCH based on the CRS pattern. When there are multiple CRS patterns, the network device can puncture the NR PDCCH based on a specific one or more of them.

[0045] In this case, the terminal can determine a specific CRS pattern based on the network's indication or based on a predefined rule. For example, the network can indicate to the terminal a plurality of lists that include a specific CRS pattern. For example, the signaling for indication can be lte-CRS-PatternList1-r18 and lte-CRS-PatternList2-r18. When the terminal determines that a specific CRS pattern is set by lte-CRS-PatternList1-r18 and other CRS patterns are set by lte-CRS-PatternList2-r18, the terminal can determine that the network device punctures the NR PDCCH only based on the specific CRS pattern and does not puncture the NR PDCCH based on other CRS patterns. The terminal may receive the NR PDCCH based on this puncturing method.

[0046] Note that the embodiments of the present disclosure determine whether to receive the NR PDCCH in the first time domain symbol based at least on the CRS setting information. That is, the basis for determining whether to receive the NR PDCCH in the first time domain symbol may further include other information such as the NR PDCCH setting information in addition to including the CRS setting information. Specifically, this will be described in the subsequent embodiments.

[0047] FIG. 4 is a schematic flowchart of another control channel receiving method according to an embodiment of the present disclosure. As shown in FIG. 4, the step of determining whether to receive NR PDCCH in the first time domain symbol based on the setting information of the CRS includes the following steps S401 to S402.

[0048] In step S401, the number of patterns of the set CRS is determined.

[0049] In step S402, when the number of patterns of the CRS is greater than or equal to the pattern number threshold, it is not desired to receive NR PDCCH in the first time domain symbol.

[0050] In one embodiment, when the number of CRS patterns is relatively large, for example, when the number of CRS patterns is greater than or equal to the pattern number threshold, it can be determined that the number of REs occupied by CRS in the first time domain symbol is relatively large. The terminal may not desire to receive NR PDCCH in the first time domain symbol, and the network device may not transmit NR PDCCH to the terminal in the first time domain symbol, thereby avoiding unnecessary consumption caused by the terminal receiving NR PDCCH in a time domain symbol with relatively few REs corresponding to NR PDCCH.

[0051] When the number of CRS patterns is relatively small, for example, when the number of CRS patterns is less than the pattern number threshold, it can be determined that the number of REs occupied by CRS in the first time domain symbol is relatively small. The terminal may desire to receive NR PDCCH in the first time domain symbol, and the network device can transmit NR PDCCH to the terminal in the first time domain symbol.

[0052] FIG. 5 is a schematic diagram of receiving NR PDCCH according to an embodiment of the present disclosure.

[0053] As shown in FIG. 5, the first CRS pattern and the second CRS pattern are the same as the situation shown in FIG. 3. For example, the time domain resources of the CORESET correspond to the first to third time domain symbols. In the time domain resources corresponding to the CRS, the first and second time domain symbols overlap. Thus, the first and second time domain symbols can be determined as the first time domain symbol, and further determine whether to receive the NR PDCCH with the first time domain symbol.

[0054] For example, when the pattern number threshold is set to 2, in the case shown in FIG. 4, the number of CRS patterns is 2, which is the same as the pattern number threshold. Therefore, since the terminal does not expect to receive the NR PDCCH with the first time domain symbol, the network device does not transmit the NR PDCCH to the terminal with the first time domain symbol. For example, the base station can transmit the NR PDCCH to the terminal with other symbols other than the first time domain symbol. Therefore, as shown in FIG. 4, the network device does not transmit the NR PDCCH to the terminal with the first and second time domain symbols, but only transmits the NR PDCCH to the terminal with the third time domain symbol. The terminal does not expect to receive the NR PDCCH with the first and second time domain symbols, but expects to receive the NR PDCCH only with the third time domain symbol. Therefore, unnecessary consumption caused by the terminal receiving the NR PDCCH with a time domain symbol with relatively few REs corresponding to the NR PDCCH is avoided.

[0055] When there is only one CRS pattern, the number of CRS patterns is 1, which is smaller than the pattern number threshold. Therefore, the terminal may expect to receive the NR PDCCH with the first time domain symbol, and the network device can transmit the NR PDCCH to the terminal with the first time domain symbol.

[0056] Note that the pattern number threshold may be determined based on the signaling transmitted from the network device, may be defined by a predefined rule, or may be set by the network device for the terminal based on the capability information of the terminal (for example, the capability to analyze NR PDCCH) after the network device reports the capability information of the terminal.

[0057] FIG. 6 is a schematic flowchart of a further control channel receiving method according to an embodiment of the present disclosure. As shown in FIG. 6, the step of determining whether to receive NR PDCCH in the first time domain symbol based on at least the setting information of the CRS includes the following steps S601 to S602.

[0058] In step S601, the number of patterns of the set CRS and the number of ports corresponding to the pattern of the CRS are determined.

[0059] In step S602, when the number of patterns of the CRS is greater than or equal to the pattern number threshold and the number of ports corresponding to at least one pattern of the CRS is greater than or equal to the port number threshold, it is not desired to receive NR PDCCH in the first time domain symbol.

[0060] In one embodiment, when the number of CRS patterns is relatively large, for example, when the number of CRS patterns is greater than or equal to the pattern number threshold, and when the number of ports corresponding to the CRS pattern is relatively large, for example, when the number of ports corresponding to at least one pattern of the CRS is greater than or equal to the port number threshold, it can be determined that the number of REs occupied by the CRS in the first time domain symbol is relatively large, and the terminal may not desire to receive NR PDCCH in the first time domain symbol, and the network device may not transmit NR PDCCH to the terminal in the first time domain symbol, thereby avoiding unnecessary consumption generated when the terminal receives NR PDCCH in a time domain symbol with relatively few REs corresponding to NR PDCCH.

[0061] In addition, it is also possible to determine whether or not it is desired to receive NR PDCCH in the first time domain symbol based only on the number of ports corresponding to the CRS pattern. For example, when the number of ports corresponding to at least one of the CRS patterns is greater than or equal to a port number threshold, it can be determined that it is not desired to receive NR PDCCH in the first time domain symbol.

[0062] Further, the port number threshold may be determined based on signaling transmitted from the network device, may be defined by a predefined rule, or may be set by the network device for the terminal based on the capability information of the terminal (for example, the capability to analyze NR PDCCH) after the network device has been reported the capability information of the terminal.

[0063] FIG. 7 is a schematic flowchart of another control channel receiving method according to an embodiment of the present disclosure. As shown in FIG. 7, the step of determining whether or not it is desired to receive NR PDCCH in the first time domain symbol based on at least the CRS configuration information includes the following steps S701 to S702.

[0064] In step S701, based on the CRS configuration information, the number of resource elements (REs) occupied by the CRS in one resource block (RB) corresponding to the first time domain symbol and / or the first resource occupancy rate are determined.

[0065] In step S702, when the number of the resource elements (REs) is greater than or equal to an RE number threshold and / or the first resource occupancy rate is greater than or equal to a first occupancy rate threshold, it is not desired to receive NR PDCCH in the first time domain symbol.

[0066] In one embodiment, when the number of REs occupied by the CRS in one RB corresponding to the first time-domain symbol is relatively large, for example, when it is equal to or greater than the RE number threshold, it can be determined that the number of REs occupied by the CRS in the first time-domain symbol is relatively large. The terminal may not need to receive the NR PDCCH in the first time-domain symbol, and the network device may not need to transmit the NR PDCCH to the terminal in the first time-domain symbol, thereby avoiding unnecessary consumption caused by the terminal receiving the NR PDCCH in a time-domain symbol where the REs corresponding to the NR PDCCH are relatively few.

[0067] In one embodiment, when the first resource occupancy rate of the CRS in one RB corresponding to the first time-domain symbol is relatively large, for example, when it is equal to or greater than the first occupancy threshold, it can be determined that the number of REs occupied by the CRS in the first time-domain symbol is relatively large.

[0068] The first resource occupancy rate refers to the ratio of the REs occupied by the CRS in one RB corresponding to the first time-domain symbol to all the REs in one RB corresponding to the first time-domain symbol. For example, in the embodiment shown in FIG. 4, the first time-domain symbols are the first and second time-domain symbols. Within the range of one RB, one time-domain symbol corresponds to 12 REs, and the first and second time-domain symbols together correspond to 24 REs. The CRS occupies 16 REs in the first and second time-domain symbols. Therefore, the first resource occupancy rate is 16 / 24, which can be calculated to be approximately 66.7%. For example, if the first occupancy threshold is 50%, since it can be determined that the first resource occupancy rate is greater than the first occupancy threshold, the terminal does not need to receive the NR PDCCH in the first time-domain symbol.

[0069] When the first resource occupancy rate is greater than or equal to the first occupancy threshold, the terminal may not need to receive the NR PDCCH in the first time domain symbol, and the network device may not transmit the NR PDCCH to the terminal in the first time domain symbol, thereby avoiding unnecessary consumption caused by the terminal receiving the NR PDCCH in the time domain symbol where the RE corresponding to the NR PDCCH is relatively small.

[0070] Here, the number of REs occupied by the CRS in the first time domain symbol may be for one RB. Similarly, the first resource occupancy rate of the CRS in the first time domain symbol may also be for one RB.

[0071] Note that the RE number threshold and the first occupancy threshold may be determined based on the signaling sent from the network device, may be defined by a predefined rule, or may be set by the network device for the terminal based on the ability information of the terminal (for example, the ability to analyze the NR PDCCH) after the terminal reports the ability information to the network device.

[0072] FIG. 8 is a schematic diagram for determining whether to expect to receive the NR PDCCH in the first time domain symbol based on the number of REs occupied by the CRS in the first time domain symbol according to an embodiment of the present disclosure.

[0073] In one embodiment, although two CRS patterns are taken as an example, the number of ports corresponding to the CRS pattern is not limited to four and can be set as needed.

[0074] For example, for the two CRS patterns in this embodiment, one CRS pattern corresponds to four ports as shown in FIG. 2, and the other CRS pattern corresponds to two ports. In one RB, the REs with numbers RE#1, RE#4, RE#7, and RE#10 on the first, fifth, eighth, and twelfth symbols are occupied.

[0075] Then, taking the case where the first and second time-domain symbols are still used as the first time-domain symbol as an example, when the RE number threshold is 5, in the first time-domain symbol, the number of REs occupied by the CRS is 8, which is greater than the RE number threshold. In the second time-domain symbol, the number of REs with the CRS is 4, which is smaller than the RE number threshold. Therefore, in the first time-domain symbol, the terminal does not desire to receive the NR PDCCH, and in the second time-domain symbol, the terminal may desire to receive the NR PDCCH.

[0076] When the CRS pattern corresponds to different numbers of ports, since there is a certain rule for the number of occupied REs, a relationship table may be set for different RE number thresholds. The relationship table includes the correspondence between the CRS pattern and different numbers of ports and the relationship between the symbol in which the terminal desires to receive the NR PDCCH in the first time-domain symbol. For example, when the RE number threshold is 4, the relationship table may be as shown in Table 1 below.

Table 1

[0077] As shown in Table 1, for example, the embodiment shown in FIG. 8 is the case of 4port CRS + 2port CRS. The terminal does not desire to receive the NR PDCCH in the first time-domain symbol (the corresponding symbol identifier is 0), desires to receive the NR PDCCH in the second time-domain symbol (the corresponding symbol identifier is 1), and there is no CRS in the third time-domain symbol (the corresponding symbol identifier is 2), so it may desire to receive the NR PDCCH. As a result, it will be received in the second and third time-domain symbols, that is, it desires to receive the NR PDCCH in the time-domain symbols with symbol identifiers 1 and 2.

[0078] Based on this, when the RE number threshold is determined, a relationship table corresponding to the RE number threshold can be determined. Therefore, for ports corresponding to a plurality of CRS patterns, the corresponding symbol identifier in the relationship table that desires to receive NR PDCCH is determined, and thereby, it is desired to receive NR PDCCH in the time domain symbol corresponding to the symbol identifier.

[0079] In one embodiment, the RE number threshold and / or the first occupancy rate threshold are related to the aggregation level (AL) of the NR PDCCH and / or the format of the downlink control information (DCI) in the NR PDCCH.

[0080] The RE number threshold can be determined based on the AL of the NR PDCCH. For example, the larger the AL, the larger the RE number threshold. For example, a level threshold may be set. When the AL is greater than the level threshold, the RE number threshold is 6, and when the AL is less than or equal to the level threshold, the RE number threshold is 4.

[0081] Note that the level threshold may be determined based on signaling transmitted from the network device, may be defined by a predefined rule, or may be set by the network device for the terminal based on the capability information of the terminal (for example, the capability to analyze the NR PDCCH) after the network device reports the capability information of the terminal.

[0082] In addition to determining the RE number threshold based on the AL of the NR PDCCH, it may also be determined based on the format of the DCI in the NR PDCCH. For example, the more bits the DCI format occupies, the smaller the RE number threshold. Exemplarily, for DCI format 1_1, since the number of bits it occupies is relatively large, the corresponding acceptable number threshold is relatively small. For example, the number threshold is 3. For DCI 1_2, the number of bits it occupies is relatively small, and the corresponding acceptable number threshold is relatively large. For example, the number threshold is 5.

[0083] Similarly, the first occupancy threshold can be determined based on the AL of the NR PDCCH. For example, the larger the AL, the smaller the first occupancy threshold. Except for being able to determine the first occupancy threshold based on the AL of the NR PDCCH, it can also be determined based on the format of the DCI in the NR PDCCH. For example, the larger the number of bits occupied by the format of the DCI, the smaller the first occupancy threshold.

[0084] In one embodiment, based on at least the configuration information of the CRS, the step of determining whether to receive the NR PDCCH in the first time domain symbol is to determine whether to receive the NR PDCCH in the first time domain symbol based on the configuration information of the CRS and the configuration information of the NR PDCCH.

[0085] Based on determining whether to receive the NR PDCCH in the first time domain symbol based on the configuration information of the CRS, other information may be further considered. For example, the configuration information of the NR PDCCH may be considered. Thereby, based on the configuration information of the CRS and the configuration information of the NR PDCCH, it is comprehensively determined whether to receive the NR PDCCH in the first time domain symbol.

[0086] FIG. 9 is a schematic flowchart of another control channel receiving method according to an embodiment of the present disclosure. As shown in FIG. 9, the step of determining whether to receive the NR PDCCH in the first time domain symbol based on the configuration information of the CRS and the configuration information of the NR PDCCH includes the following steps S901 to S902.

[0087] In step S901, the number of configured CRS patterns and the aggregation level of the NR PDCCH are determined.

[0088] In step S902, when the number of patterns of the CRS is equal to or greater than a numerical threshold and the aggregation level is equal to or lower than a level threshold, it is not desirable to receive the NR PDCCH in the first time domain symbol.

[0089] In one embodiment, when the number of patterns of the CRS is equal to or greater than a numerical threshold, the aggregation level AL of the NR PDCCH may be further considered.

[0090] When the number of patterns of the CRS is equal to or greater than a numerical threshold, it can be determined that the number of REs occupied by the CRS in the first time domain symbol is relatively large. However, when the AL of the NR PDCCH is relatively large, for example, when it is greater than the level threshold, the REs occupied by the NR PDCCH are relatively many. Even if the NR PDCCH is punctured based on a plurality of CRS patterns, the NR PDCCH can still retain a lot of information. Therefore, in this case, it may still be desirable to receive the NR PDCCH in the first time domain symbol.

[0091] When the AL of the NR PDCCH is relatively small, for example, when it is equal to or lower than the level threshold, the REs occupied by the NR PDCCH are relatively few. After puncturing the NR PDCCH based on a plurality of CRS patterns, the remaining information of the NR PDCCH is little. In this case, it may not be desirable to receive the NR PDCCH in the first time domain symbol.

[0092] FIG. 10 is a schematic flowchart of another control channel receiving method according to an embodiment of the present disclosure. As shown in FIG. 10, the step of determining whether to receive the NR PDCCH in the first time domain symbol based on at least the setting information of the CRS includes the following steps S1001 to S1002.

[0093] In step S1001, the second resource occupancy rate of the CRS in the control resource set (CORESET) of the NR PDCCH (for example, the CORESET set by the network device for the terminal) is determined, and the second time domain symbol in the CORESET overlaps with the first time domain symbol.

[0094] In step S1002, when the second resource occupancy rate is equal to or higher than the second occupancy threshold, it is not desirable to receive the NR PDCCH in the first time domain symbol.

[0095] In one embodiment, the resource occupancy rate of the CRS in the CORESET of the NR PDCCH can be determined, for example, it can be referred to as the second resource occupancy rate. When the second resource occupancy rate is relatively large, for example, when it is equal to or higher than the second occupancy threshold, it can be determined that the number of resource elements (REs) occupied by the CRS in the second time domain symbol corresponding to the CORESET, that is, in the first time domain symbol, is relatively large.

[0096] The second resource occupancy rate refers to the ratio of the REs occupied by the CRS in the CORESET of the NR PDCCH to all the REs in the CORESET. For example, in the embodiment shown in FIG. 4, it is described within one resource block (RB) range. The CORESET occupies the first, second, and third time domain symbols of the RB. One time domain symbol within one RB range corresponds to 12 REs. Then, the three time domain symbols together correspond to 36 REs. The CRS occupies a total of 16 REs in the first and second time domain symbols out of these three time domain symbols. Thus, the second resource occupancy rate can be calculated as 16 / 36, which is approximately 44.4%. For example, when the second occupancy threshold is 20%, it can be determined that the second resource occupancy rate is greater than the second occupancy threshold. Therefore, the terminal does not desire to receive the NR PDCCH in the first time domain symbol.

[0097] In this case, when transmitting NR PDCCH using the first time-domain symbol, many REs corresponding to the NR PDCCH will be punctured. Therefore, the network device may not need to transmit the NR PDCCH using the first time-domain resource. At this time, the time-domain symbols occupied by the transmission of the NR PDCCH are a subset of the duration time-domain symbols of the CORESER (for example, in FIG. 4, the NR PDCCH is transmitted using only the third time-domain symbol). The terminal may not need to receive the NR PDCCH using the first time-domain symbol, thereby avoiding unnecessary consumption caused by the terminal receiving the NR PDCCH using a time-domain symbol with relatively few REs corresponding to the NR PDCCH.

[0098] On the contrary, when the second resource occupancy rate is relatively high, for example, when it is greater than the second occupancy threshold, it can be determined that the number of REs occupied by the CRS in the second time-domain symbol of the CORESET, that is, in the first time-domain symbol, is relatively small. In this case, the network device can transmit the NR PDCCH on the first time-domain resource, and the terminal may desire to receive the NR PDCCH using the first time-domain symbol.

[0099] Note that the second occupancy threshold may be determined based on the signaling transmitted from the network device, may be defined by a predefined rule, or may be set by the network device for the terminal based on the ability information of the terminal (for example, the ability to analyze the NR PDCCH) after the network device reports the ability information of the terminal.

[0100] In addition, based on the resource occupancy rate of the NR PDCCH in the CORESET, except that it can be determined whether to desire to receive the NR PDCCH using the first time-domain symbol based on the resource occupancy rate of the CRS in the CORESET, it may also be determined whether to desire to receive the NR PDCCH using the first time-domain symbol based on the resource occupancy rate of the NR PDCCH in the CORESET.

[0101] In one embodiment, considering several reference signals in a network device, for example, when an SSB is being transmitted on the current slot, in order to avoid collision between an NR PDCCH and the SSB signal, at this time, the NR PDCCH may be scheduled to be transmitted in the time-domain symbol where the CRS is located. Specifically, the time-domain symbol occupied by the transmission of the NR PDCCH can be determined based on the second resource occupancy rate. In the next slot, when the SSB is not transmitted in the corresponding slot, the corresponding PDCCH can be transmitted in the time-domain symbol not occupied by the CRS. Here, the specific time-domain symbol occupied by the transmission of the NR PDCCH within the CORESET can be determined by a dynamic method, and it is not necessary to reset the CORESET and the corresponding search space by RRC signaling again, thereby reducing the delay of the PDCCH transmission and realizing more flexible resource scheduling.

[0102] In one embodiment, the terminal may not need to require that the second resource occupancy rate corresponding to the set CORESET is greater than or equal to the second resource occupancy rate threshold.

[0103] FIG. 11 is a schematic flowchart of a control channel transmission method according to an embodiment of the present disclosure. The control channel transmission method shown in this embodiment is applicable to a network device. The network device can communicate with a terminal, and the network device includes, but is not limited to, a base station in a communication system such as a 4G base station, a 5G base station, and a 6G base station. The terminal includes, but is not limited to, a communication device such as a mobile phone, a tablet, a wearable device, a sensor, and an Internet of Things device.

[0104] As shown in FIG. 11, the control channel transmission method may include the following S1101 to S1102.

[0105] In step S1101, a first time-domain symbol (orthogonal frequency division multiplexing (OFDM) symbol) corresponding to a cell-specific reference signal (CRS) set for the terminal is determined, and the first time-domain symbol is part or all of the time-domain symbols in the time-domain resource where the CRS is located.

[0106] In step S1102, based on at least the setting information of the CRS, it is determined whether to transmit a new radio physical downlink control channel (NR PDCCH) to the terminal using the first time-domain symbol.

[0107] As shown in FIG. 2, in one resource block (RB), in the time domain, it includes 14 symbols (for example, orthogonal frequency division multiplexing (OFDM) symbols), and in the frequency domain, it includes 12 resource elements (REs). For example, in one symbol, the numbers of the REs from bottom to top are RE#0 to RE#11. As shown in FIG. 2, the CRS occupies the REs whose numbers in the first, second, fifth, eighth, ninth, and twelfth symbols are RE#0, RE#3, RE#6, RE#9.

[0108] The resources occupied by the CRS can be determined based on the pattern of the CRS. The CRS pattern indicates the resources occupied by the CRS. Since the physical downlink shared channel (PDSCH) can perform rate matching based on the resources of the CRS, it is also called the CRS rate matching (RM) pattern.

[0109] Note that LTE CRS may be transmitted by an LTE network device, NR PDCCH may be transmitted by an NR network device, and the NR network device can determine the resources occupied by CRS. For example, it may be determined by communicating with the LTE network device, or it may be determined based on a protocol agreement.

[0110] Also, the terminal can determine the resources occupied by CRS based on the CRS pattern (which may be determined according to the indication of the network device or according to a predefined rule), and determine the resources occupied by NR PDCCH based on the settings of the NR network device.

[0111] In the DSS scenario, since the LTE system and the NR system can coexist in the same spectrum, the CRS transmitted by the LTE system will interfere with the NR PDCCH. For example, the network device in the NR system can puncture the NR PDCCH based on the CRS pattern, and the terminal receives the NR PDCCH according to the situation where the NR PDCCH is punctured.

[0112] In some scenarios, for example, when the terminal is at the boundary of multiple LTE cells, it receives CRS corresponding to multiple LTE cells. Therefore, there are multiple corresponding CRS patterns, and the resources occupied by each CRS pattern are different. So, multiple CRS patterns occupy REs intensively, and thus collide with NR PDCCH in more REs.

[0113] When a network device punctures NR PDCCH based on multiple CRS patterns, a large amount of information carried by the NR PDCCH is lost, affecting the decoding effect. And because the number of CRS patterns to be considered is large, for a terminal to receive NR PDCCH, the REs corresponding to the NR PDCCH are overly punctured, so the terminal cannot accurately analyze the PDCCH, which affects the demodulation performance of the PDCCH and subsequently affects resource scheduling.

[0114] As shown in FIG. 3, taking the case where the terminal is at the boundary of two LTE cells as an example, the network device needs to puncture the NR PDCCH according to two CRS patterns. The first CRS pattern is as shown in FIG. 2, and the second CRS pattern occupies the REs with numbers RE#1, RE#4, RE#7, RE#10 at the first, second, fifth, eighth, ninth, and twelfth symbols in one RB.

[0115] For example, the control resource set (CORESET) corresponding to the terminal corresponds to the first, second, and third symbols in the time-domain resource. In one RB range, since the CRS occupies 8 REs in each of the first and second symbols, it is necessary to puncture the NR PDCCH corresponding to 8 REs. As a result, in each of the first and second symbols, the NR PDCCH occupies only 4 REs. In this case, when the terminal receives the NR PDCCH in the first and second symbols, it is necessary to consider the case where the network device punctures the NR PDCCH based on two CRS patterns. The overhead becomes large, and the information in the receivable NR PDCCH is extremely small.

[0116] In an embodiment of the present disclosure, a network device can determine some or all of the time-domain symbols corresponding to the resources occupied by the CRS, which can be referred to as, for example, the first time-domain symbol. The first time-domain symbol may be a time-domain symbol that overlaps with some or all of a CORESET (for example, the CORESET configured by the network device for the terminal). Therefore, based on the CRS configuration information, for example, based on the number of CRS patterns, the situation of the resources occupied by the CRS (such as the number of occupied resource elements (REs), the occupancy rate, etc.), it is comprehensively determined whether to transmit the NR PDCCH in the first time-domain symbol.

[0117] For example, based on the CRS configuration information, if it is determined that the number of REs occupied by the CRS in the first time-domain symbol is relatively large, the terminal may not desire to receive the NR PDCCH in the first time-domain symbol, and the network device may not transmit the NR PDCCH to the terminal in the first time-domain symbol, thereby avoiding unnecessary consumption caused by the network device transmitting the NR PDCCH in a time-domain symbol with relatively few REs corresponding to the NR PDCCH.

[0118] In one embodiment, the CRS configuration information includes

[0119] at least one of the number of CRS patterns, the number of ports corresponding to the CRS pattern, and the time-frequency resources occupied by the CRS (for example, REs, based on which the number of REs occupied by the CRS in the first time-domain symbol and the first resource occupancy rate of the CRS in the first time-domain symbol can be determined). Considering that the number of REs occupied by the CRS within different resource block (RB) ranges is the same, the number of occupied REs can be evaluated as the number of REs occupied by the CRS within one RB range.

[0120] In one embodiment, the method further includes receiving capability information transmitted from the terminal, and based on the capability information, determining whether to support the terminal to receive NR PDCCH in the first time domain symbol when the configuration information of the CRS meets the target configuration.

[0121] By reporting capability information to the network device, the terminal can notify the network device whether it supports receiving NR PDCCH in the first time domain symbol when the configuration information of the CRS meets the target configuration.

[0122] The target configuration includes, but is not limited to, that the number of CRS patterns is greater than or equal to the pattern number threshold, the number of resource elements (REs) occupied by the CRS in one RB corresponding to the first time domain symbol is greater than or equal to the RE number threshold, the first resource occupancy rate of the resource elements occupied by the CRS in one RB corresponding to the first time domain symbol is greater than or equal to the first occupancy threshold, and the second resource occupancy rate of the CRS in the CORESET of the NR PDCCH is greater than or equal to the second occupancy threshold.

[0123] For example, when the configuration information includes the number of CRS patterns, the target configuration may be that the number of CRS patterns is 2 or more. Therefore, based on the capability information, the network device can determine whether to support the terminal to receive NR PDCCH in the first time domain symbol when the number of CRS patterns is 2 or more. If the terminal does not support receiving NR PDCCH in the first time domain symbol, the network device may not need to transmit NR PDCCH to the terminal in the first time domain symbol in the scene of the target configuration. If the terminal supports receiving NR PDCCH in the first time domain symbol, the network device can transmit NR PDCCH to the terminal in the first time domain symbol in the scene of the target configuration.

[0124] Also, in one embodiment, the network device can puncture the NR PDCCH based on the CRS pattern. When there are multiple CRS patterns, the network device can puncture the NR PDCCH based on one or more specific CRS patterns among them.

[0125] In this case, the terminal can determine a specific CRS pattern based on the indication of the network, or can determine the CRS pattern based on a preset rule. For example, a plurality of lists including a specific CRS pattern can be indicated to the terminal. For example, the signaling for indication can be lte-CRS-PatternList1-r18 and lte-CRS-PatternList2-r18. When the terminal determines that a specific CRS pattern is set by lte-CRS-PatternList1-r18 and other CRS patterns are set by lte-CRS-PatternList2-r18, the terminal can determine that the network device punctures the NR PDCCH only based on the specific CRS pattern and does not puncture the NR PDCCH based on other CRS patterns. The terminal may receive the NR PDCCH based on this puncturing method.

[0126] Note that the embodiments of the present disclosure determine whether to receive the NR PDCCH in the first time domain symbol based at least on the CRS setting information, that is, the basis for determining whether to receive the NR PDCCH in the first time domain symbol may further include other information such as the NR PDCCH setting information in addition to including the CRS setting information. Specifically, it will be described in the following embodiments.

[0127] FIG. 12 is a schematic flowchart of another control channel transmission method according to an embodiment of the present disclosure. As shown in FIG. 12, the step of determining whether to transmit NR PDCCH to the terminal in the first time domain symbol based on at least the setting information of the CRS includes the following steps S1201 to S1202.

[0128] In step S1201, the number of patterns of the set CRS is determined.

[0129] In step S1202, when the number of patterns of the CRS is greater than or equal to a pattern number threshold, NR PDCCH is not transmitted to the terminal in the first time domain symbol.

[0130] In one embodiment, when the number of CRS patterns is relatively large, for example, when the number of CRS patterns is greater than or equal to a pattern number threshold, it can be determined that the number of REs occupied by the CRS in the first time domain symbol is relatively large. The terminal may not desire to receive NR PDCCH in the first time domain symbol, and the network device may not transmit NR PDCCH to the terminal in the first time domain symbol either. Thereby, unnecessary consumption caused by the terminal receiving NR PDCCH in a time domain symbol with relatively few REs corresponding to NR PDCCH is avoided.

[0131] When the number of CRS patterns is relatively small, for example, when the number of CRS patterns is less than a pattern number threshold, it can be determined that the number of REs occupied by the CRS in the first time domain symbol is relatively small. The terminal may desire to receive NR PDCCH in the first time domain symbol, and the network device can transmit NR PDCCH to the terminal in the first time domain symbol.

[0132] As shown in Fig. 5, the first CRS pattern and the second CRS pattern are the same as the situation shown in Fig. 3. For example, the time domain resources of the CORESET correspond to the first to third time domain symbols. In the time domain resources corresponding to the CRS, the first and second time domain symbols overlap. Thus, the first and second time domain symbols can be determined as the first time domain symbol, and further determine whether to send NR PDCCH to the terminal using the first time domain symbol.

[0133] For example, when the pattern number threshold is set to 2, in the case shown in Fig. 4, the number of CRS patterns is 2, which is the same as the pattern number threshold. Therefore, since the terminal does not expect to receive NR PDCCH using the first time domain symbol, the network device does not send NR PDCCH to the terminal using the first time domain symbol. For example, the base station can send NR PDCCH to the terminal using symbols other than the first time domain symbol. Thus, as shown in Fig. 4, the network device does not send NR PDCCH to the terminal using the first and second time domain symbols, but only sends NR PDCCH to the terminal using the third time domain symbol. The network does not send NR PDCCH to the terminal using the first and second time domain symbols, but only sends NR PDCCH to the terminal using the third time domain symbol. This avoids unnecessary consumption caused by the network device sending NR PDCCH to the terminal using a time domain symbol with relatively few REs corresponding to NR PDCCH.

[0134] When there is only one CRS pattern, the number of CRS patterns is 1, which is smaller than the pattern number threshold. Therefore, the terminal may expect to receive NR PDCCH using the first time domain symbol, and the network device can send NR PDCCH to the terminal using the first time domain symbol.

[0135] Note that the pattern number threshold may be determined by a network device and indicated to the terminal by signaling, may be defined by a predefined rule, or may be set for the terminal based on the capability information reported by the terminal to the network device (for example, the capability to analyze NR PDCCH).

[0136] FIG. 13 is a schematic flowchart of another control channel transmission method according to an embodiment of the present disclosure. As shown in FIG. 13, the step of determining whether to transmit NR PDCCH to the terminal in the first time domain symbol based on at least the setting information of the CRS includes the following steps S1301 to S1302.

[0137] In step S1301, the number of patterns of the CRS and the number of ports corresponding to the pattern of the CRS are determined.

[0138] In step S1302, when the number of patterns of the CRS is greater than or equal to the pattern number threshold and the number of ports corresponding to at least one of the patterns of the CRS is greater than or equal to the port number threshold, NR PDCCH is not transmitted to the terminal in the first time domain symbol.

[0139] In one embodiment, when the number of CRS patterns is relatively large, for example, when the number of CRS patterns is greater than or equal to the pattern number threshold, and when the number of ports corresponding to the CRS pattern is relatively large, for example, when the number of ports corresponding to at least one of the CRS patterns is greater than or equal to the port number threshold, it can be determined that the number of resource elements (REs) occupied by the CRS in the first time domain symbol is relatively large. The terminal may not desire to receive NR PDCCH in the first time domain symbol, and the network device may also not transmit NR PDCCH to the terminal in the first time domain symbol. This avoids unnecessary consumption caused by the terminal receiving NR PDCCH in a time domain symbol where the number of REs corresponding to NR PDCCH is relatively small.

[0140] In addition, it may be determined whether to receive NR PDCCH in the first time domain symbol only based on the number of ports corresponding to the CRS pattern. For example, when the number of ports corresponding to at least one of the CRS patterns is equal to or greater than a port number threshold, it may be determined that NR PDCCH is not transmitted to the terminal in the first time domain symbol.

[0141] Also, the port number threshold may be determined by a network device and indicated to the terminal by signaling, may be defined by a predefined rule, or may be set for the terminal based on the capability information reported by the terminal to the network device (for example, the capability to analyze NR PDCCH).

[0142] FIG. 14 is a schematic flowchart of another control channel transmission method according to an embodiment of the present disclosure. As shown in FIG. 14, the step of determining whether to transmit NR PDCCH to the terminal in the first time domain symbol based on at least the CRS configuration information includes the following steps S1401 to S1402.

[0143] In step S1401, based on the CRS configuration information, the number of resource elements (REs) occupied by the CRS in one resource block (RB) corresponding to the first time domain symbol and / or the first resource occupancy rate are determined.

[0144] In step S1402, when the number of the resource elements (REs) is equal to or greater than an RE number threshold and / or the first resource occupancy rate is equal to or greater than a first occupancy rate threshold, NR PDCCH is not transmitted to the terminal in the first time domain symbol.

[0145] In one embodiment, when the number of REs occupied by the CRS in one RB corresponding to the first time-domain symbol is relatively large, for example, when it is equal to or greater than a RE number threshold, it can be determined that the number of REs occupied by the CRS in the first time-domain symbol is relatively large. The terminal does not need to desire to receive the NR PDCCH in the first time-domain symbol, and the network device does not transmit the NR PDCCH to the terminal in the first time-domain symbol, thereby avoiding unnecessary consumption caused by the network device transmitting the NR PDCCH to the terminal in a time-domain symbol where the REs corresponding to the NR PDCCH are relatively few.

[0146] In one embodiment, when the first resource occupancy rate of the CRS in one RB corresponding to the first time-domain symbol is relatively large, for example, when it is equal to or greater than a first occupancy threshold, it can be determined that the number of REs occupied by the CRS in the first time-domain symbol is relatively large.

[0147] The first resource occupancy rate refers to the ratio of the REs occupied by the CRS in one RB corresponding to the first time-domain symbol to all the REs in one RB corresponding to the first time-domain symbol. For example, in the embodiment shown in FIG. 4, the first time-domain symbol is the first and second time-domain symbols. Within one RB range, one time-domain symbol corresponds to 12 REs. Then, the first and second time-domain symbols together correspond to 24 REs, and the CRS occupies 16 REs in the first and second time-domain symbols. Therefore, the first resource occupancy rate is 16 / 24, which can be calculated to be approximately 66.7%. For example, when the first occupancy threshold is 50%, it can be determined that the first resource occupancy rate is greater than the first occupancy threshold. Therefore, the terminal does not desire to receive the NR PDCCH in the first time-domain symbol, and the network device also does not transmit the NR PDCCH to the terminal in the first time-domain symbol.

[0148] When the first resource occupancy rate is greater than or equal to the first occupancy threshold, the terminal may not need to receive the NR PDCCH in the first time domain symbol, and the network device also does not need to transmit the NR PDCCH to the terminal in the first time domain symbol. Thereby, the unnecessary consumption generated when the terminal receives the NR PDCCH in the time domain symbol with relatively few REs corresponding to the NR PDCCH is avoided.

[0149] Here, the number of REs occupied by the CRS in the first time domain symbol may be for one RB. Similarly, the first resource occupancy rate of the CRS in the first time domain symbol may also be for one RB.

[0150] Note that the RE number threshold and the first occupancy threshold may be determined by the network device and indicated to the terminal by signaling, may be defined by a predefined rule, or may be set for the terminal based on the capability information reported by the terminal to the network device (for example, the capability to analyze the NR PDCCH).

[0151] As shown in FIG. 8, taking the case where the first and second time domain symbols are still used as the first time domain symbol as an example, when the RE number threshold is 5, in the first time domain symbol, the number of REs occupied by the CRS is 8, which is greater than the RE number threshold. In the second time domain symbol, the number of REs occupied by the CRS is 4, which is less than the RE number threshold. Therefore, in the first time domain symbol, the terminal does not need to receive the NR PDCCH. In the second time domain symbol, the terminal may desire to receive the NR PDCCH, and the network device may transmit the NR PDCCH to the terminal in the second time domain symbol.

[0152] When the CRS pattern corresponds to different numbers of ports, since there are certain rules for the number of occupied REs, a relationship table may be set for different RE number thresholds. The relationship table includes the relationship between the CRS pattern corresponding to different numbers of ports and the symbols for which the terminal hopes to receive NR PDCCH in the first time domain symbol. For example, when the RE number threshold is 4, the relationship table may be as shown in Table 1.

[0153] As shown in Table 1, for example, the embodiment shown in FIG. 8 is the case of 4port CRS + 2port CRS. The terminal does not hope to receive NR PDCCH in the first time domain symbol (the corresponding symbol identifier is 0), transmits NR PDCCH in the second time domain symbol (the corresponding symbol identifier is 1), and since there is no CRS in the third time domain symbol (the corresponding symbol identifier is 2), it may transmit NR PDCCH. As a result, it transmits in the second and third time domain symbols, that is, transmits NR PDCCH to the terminal in the time domain symbols with symbol identifiers 1 and 2.

[0154] Based on this, when the RE number threshold is determined, the relationship table corresponding to the RE number threshold can be determined, so as to determine the corresponding symbol identifier in the relationship table for which the ports corresponding to multiple CRS patterns hope to receive NR PDCCH, and thereby hope to receive NR PDCCH in the time domain symbol corresponding to the symbol identifier.

[0155] In one embodiment, the RE number threshold and / or the first occupancy threshold are related to the aggregation level (AL) of the NR PDCCH and / or the format of the downlink control information (DCI) in the NR PDCCH.

[0156] The RE count threshold can be determined based on the AL of the NR PDCCH. For example, the larger the AL, the larger the RE count threshold. For example, a level threshold may be set. When the AL is greater than the level threshold, the RE count threshold is 6. When the AL is less than or equal to the level threshold, the RE count threshold is 4.

[0157] Note that the level threshold may be determined based on the signaling sent from the network device, may be defined by a predefined rule, or may be set by the network device for the terminal based on the capability information of the terminal (for example, the capability to analyze the NR PDCCH) after the network device reports the capability information of the terminal.

[0158] Except for determining the RE count threshold based on the AL of the NR PDCCH, it may also be determined based on the format of the DCI in the NR PDCCH. For example, the larger the number of bits occupied by the DCI format, the smaller the RE count threshold. Exemplarily, for DCI format 1_1, since the number of bits it occupies is relatively large, the corresponding allowable count threshold is relatively small. For example, the count threshold is 3. For DCI 1_2, the number of bits it occupies is relatively small, and the corresponding allowable count threshold is relatively large. For example, the count threshold is 5.

[0159] Similarly, the first occupancy threshold can be determined based on the AL of the NR PDCCH. For example, the larger the AL, the smaller the first occupancy threshold. Except for being able to determine the first occupancy threshold based on the AL of the NR PDCCH, it can also be determined based on the format of the DCI in the NR PDCCH. For example, the larger the number of bits occupied by the DCI format, the smaller the first occupancy threshold.

[0160] In one embodiment, the step of determining whether to transmit NR PDCCH to the terminal in the first time-domain symbol based on at least the configuration information of the CRS includes the step of determining whether to transmit NR PDCCH to the terminal in the first time-domain symbol based on the configuration information of the CRS and the configuration information of the NR PDCCH.

[0161] Based on the configuration information of the CRS, on the basis of determining whether it is desired to receive NR PDCCH in the first time-domain symbol, other information may be further considered. For example, the configuration information of the NR PDCCH may be considered, whereby, based on the configuration information of the CRS and the configuration information of the NR PDCCH, it is comprehensively determined whether to transmit NR PDCCH to the terminal in the first time-domain symbol.

[0162] FIG. 15 is a schematic flowchart of another control channel transmission method according to an embodiment of the present disclosure. As shown in FIG. 15, the step of determining whether to transmit NR PDCCH to the terminal in the first time-domain symbol based on the configuration information of the CRS and the configuration information of the NR PDCCH includes the following steps S1501 to S1502.

[0163] In step S1501, the number of patterns of the CRS and the aggregation level of the NR PDCCH are determined.

[0164] In step S1502, when the number of patterns of the CRS is greater than or equal to a number threshold and the aggregation level is less than or equal to a level threshold, NR PDCCH is not transmitted to the terminal in the first time-domain symbol.

[0165] In one embodiment, when the number of patterns of the CRS is greater than or equal to a number threshold, the aggregation level (AL) of the NR PDCCH may be further considered.

[0166] When the number of CRS patterns is greater than or equal to a numerical threshold, it can be determined that the number of REs occupied by CRS in the first time-domain symbol is relatively large. However, when the AL of NR PDCCH is relatively large, for example, when it is greater than a level threshold, the REs occupied by NR PDCCH are relatively many. Even if NR PDCCH is punctured based on multiple CRS patterns, NR PDCCH can still retain a lot of information. Therefore, in this case, NR PDCCH can still be transmitted to the terminal in the first time-domain symbol.

[0167] When the AL of NR PDCCH is relatively small, for example, when it is less than or equal to a level threshold, the REs occupied by NR PDCCH are relatively few. After NR PDCCH is punctured based on multiple CRS patterns and the remaining information of NR PDCCH is small, in this case, NR PDCCH can be transmitted to the terminal in the first time-domain symbol.

[0168] FIG. 16 is a schematic flowchart of another control channel transmission method according to an embodiment of the present disclosure. As shown in FIG. 16, the step of determining whether to transmit NR PDCCH to the terminal in the first time-domain symbol based on at least the configuration information of the CRS includes the following steps S1601 to S1602.

[0169] In step S1601, the second resource occupancy rate of NR PDCCH in a control resource set (CORESET) is determined, and the second time-domain symbol and the first time-domain symbol in the CORESET overlap.

[0170] In step S1602, when the second resource occupancy rate is less than or equal to a second occupancy threshold, the network device determines whether to support transmitting NR PDCCH to the terminal in the first time-domain symbol.

[0171] In one embodiment, the resource occupancy rate of CRS in the CORESET of NR PDCCH can be determined, which can be referred to as the second resource occupancy rate for example. When the second resource occupancy rate is relatively large, for example, when it is equal to or higher than the second occupancy threshold, it can be determined that the number of REs occupied by CRS in the second time domain symbol corresponding to the CORESET, that is, the first time domain symbol, is relatively large.

[0172] The second resource occupancy rate refers to the ratio of the REs occupied by CRS in the CORESET of NR PDCCH to all the REs in the CORESET. For example, in the embodiment shown in FIG. 4, it is described within one RB range. The CORESET occupies the first, second, and third time domain symbols of the RB. One time domain symbol within one RB range corresponds to 12 REs. Then, the three time domain symbols correspond to 36 REs in total. CRS occupies 16 REs in total in the first and second time domain symbols among these three time domain symbols. Thus, it can be calculated that the second resource occupancy rate is 16 / 36, which is approximately 44.4%. For example, when the second occupancy threshold is 20%, it can be determined that the second resource occupancy rate is greater than the second occupancy threshold. Therefore, the terminal does not desire to receive NR PDCCH in the first time domain symbol, and the network device does not send NR PDCCH to the terminal in the first time domain symbol.

[0173] In this case, when transmitting NR PDCCH using the first time-domain symbol, many REs corresponding to the NR PDCCH will be punctured. Therefore, the network device does not necessarily need to transmit the NR PDCCH on the first time-domain resource. At this time, the time-domain symbols occupied by the transmission of the NR PDCCH are a subset of the duration time-domain symbols of the CORESER (for example, in FIG. 4, the NR PDCCH is transmitted using only the third time-domain symbol). The network device does not necessarily need to transmit the NR PDCCH to the terminal using the first time-domain symbol, thereby avoiding unnecessary consumption caused by the terminal transmitting the NR PDCCH using a time-domain symbol with relatively few REs corresponding to the NR PDCCH.

[0174] On the contrary, when the second resource occupancy rate is relatively high, for example, when it is greater than the second occupancy threshold, it can be determined that the number of REs occupied by the CRS in the second time-domain symbol of the CORESET, that is, the first time-domain symbol, is relatively small. In this case, the network device can transmit the NR PDCCH on the first time-domain resource, and the terminal may wish to receive the NR PDCCH using the first time-domain symbol.

[0175] Note that the second occupancy threshold may be determined based on the signaling transmitted from the network device, may be defined by a predefined rule, or may be set by the network device for the terminal based on the ability information of the terminal (for example, the ability to analyze the NR PDCCH) after the network device reports the ability information of the terminal.

[0176] In one embodiment, considering several reference signals in a network device, for example, when an SSB is being transmitted on the current slot, in order to avoid a collision between an NR PDCCH and the SSB signal, at this time, the NR PDCCH may be scheduled to be transmitted in the time-domain symbol where the CRS is located. Specifically, the time-domain symbol occupied by the transmission of the NR PDCCH can be determined based on the second resource occupancy rate. In the next slot, when the SSB is not transmitted in the corresponding slot, the corresponding PDCCH can be transmitted in the time-domain symbol not occupied by the CRS. Here, the specific time-domain symbol occupied by the transmission of the NR PDCCH within the CORESET can be determined by a dynamic method, and it is not necessary to reconfigure the CORESET and the corresponding search space by RRC signaling. This reduces the delay of the PDCCH transmission and realizes more flexible resource scheduling.

[0177] Corresponding to the foregoing embodiments of the control channel receiving method and the control channel transmitting method, the present disclosure further provides embodiments of a control channel receiving apparatus and a control channel transmitting apparatus.

[0178] FIG. 17 is a schematic block diagram of a control channel receiving apparatus according to an embodiment of the present disclosure. The control channel receiving apparatus shown in this embodiment is applicable to a terminal, and the terminal includes, but is not limited to, communication devices such as mobile phones, tablets, wearable devices, sensors, and Internet of Things devices. The terminal can communicate with a network device, and the network device includes, but is not limited to, network devices in communication systems such as 4G, 5G, and 6G, for example, base stations, core networks, and the like.

[0179] As shown in FIG. 17, the control channel receiving apparatus is Determine a first time-domain symbol corresponding to a cell-specific reference signal (CRS), where the first time-domain symbol is part or all of the time-domain symbols in the time-domain resource where the CRS is located, and determine whether it is desired to receive a new radio physical downlink control channel (NR PDCCH) with the first time-domain symbol based at least on the configuration information of the CRS. A processing module 1701 may be included which is configured to do so.

[0180] In one embodiment, the processing module determines the number of configured patterns of the CRS, and when the number of patterns of the CRS is greater than or equal to a pattern number threshold, it is configured not to desire to receive NR PDCCH with the first time-domain symbol.

[0181] In one embodiment, the processing module determines the number of configured patterns of the CRS and the number of ports corresponding to the pattern of the CRS, and when the number of patterns of the CRS is greater than or equal to a pattern number threshold, and when the number of ports corresponding to at least one pattern of the CRS is greater than or equal to a port number threshold, it is configured not to desire to receive NR PDCCH with the first time-domain symbol.

[0182] In one embodiment, based on the configuration information of the CRS, determine the number of resource elements (REs) occupied by the CRS in one resource block (RB) corresponding to the first time-domain symbol and / or a first resource occupancy rate. When the number of resource elements (REs) is greater than or equal to an RE number threshold, and / or when the first resource occupancy rate is greater than or equal to a first occupancy rate threshold, it is configured not to desire to receive NR PDCCH with the first time-domain symbol.

[0183] In one embodiment, the RE number threshold and / or the first occupancy rate threshold are related to the aggregation level of the NR PDCCH and / or the format of the downlink control information (DCI) in the NR PDCCH.

[0184] In one embodiment, the processing module is configured to determine whether to receive NR PDCCH in the first time domain symbol based on the configuration information of the CRS and the configuration information of the NR PDCCH.

[0185] In one embodiment, the processing module determines the number of patterns of the configured CRS and the aggregation level of the NR PDCCH, and is configured not to desire to receive NR PDCCH in the first time domain symbol when the number of patterns of the CRS is greater than or equal to a numerical threshold and the aggregation level is less than or equal to a level threshold.

[0186] In one embodiment, the processing module determines the second resource occupancy rate of the NR PDCCH in the control resource set (CORESET), and is configured not to desire to receive NR PDCCH in the first time domain symbol when the second time domain symbol in the CORESET overlaps with the first time domain symbol and the second resource occupancy rate is less than or equal to a second occupancy threshold.

[0187] In one embodiment, the apparatus further includes a transmission module configured to transmit, to a network device, capability information indicating whether the terminal supports receiving NR PDCCH in the first time domain symbol when the configuration information of the CRS satisfies a target configuration.

[0188] FIG. 18 is a schematic flowchart of a control channel transmission apparatus according to an embodiment of the present disclosure. The control channel transmission apparatus shown in this embodiment is applicable to a network device, the network device can communicate with a terminal, the network device includes, but is not limited to, a base station in a communication system such as a 4G base station, a 5G base station, and a 6G base station, and the terminal includes, but is not limited to, a communication device such as a mobile phone, a tablet, a wearable device, a sensor, and an Internet of Things device.

[0189] As shown in FIG. 18, the control channel transmission device includes a processing module 1801 configured to determine a first time-domain symbol corresponding to a cell-specific reference signal (CRS) set for a terminal, where the first time-domain symbol is part or all of the time-domain symbols in the time-domain resource where the CRS is located, and based on at least the setting information of the CRS, determine whether to transmit a new radio physical downlink control channel (NR PDCCH) to the terminal using the first time-domain symbol.

[0190] In one embodiment, the processing module is configured to determine the number of patterns of the set CRS, and when the number of patterns of the CRS is greater than or equal to a pattern number threshold, not transmit the NR PDCCH to the terminal using the first time-domain symbol.

[0191] In one embodiment, the processing module is configured to determine the number of patterns of the CRS and the number of ports corresponding to the pattern of the CRS, and when the number of patterns of the CRS is greater than or equal to a pattern number threshold and the number of ports corresponding to at least one pattern of the CRS is greater than or equal to a port number threshold, not transmit the NR PDCCH to the terminal using the first time-domain symbol.

[0192] In one embodiment, the processing module is configured to determine, based on the setting information of the CRS, the number of resource elements (REs) occupied by the CRS in one resource block (RB) corresponding to the first time-domain symbol and / or a first resource occupancy rate, and when the number of resource elements (REs) is greater than or equal to an RE number threshold and / or the first resource occupancy rate is equal to a first occupancy rate threshold, not transmit the NR PDCCH to the terminal using the first time-domain symbol.

[0193] In one embodiment, the RE number threshold and / or the first occupancy rate threshold are related to the aggregation level of the NR PDCCH and / or the format of the downlink control information (DCI) in the NR PDCCH.

[0194] In one embodiment, the processing module is configured to determine whether to transmit NR PDCCH to the terminal in the first time domain symbol based on the configuration information of the CRS and the configuration information of the NR PDCCH.

[0195] In one embodiment, the processing module determines the number of patterns of the CRS and the aggregation level of the NR PDCCH. When the number of patterns of the CRS is greater than or equal to a numerical threshold and the aggregation level is less than or equal to a level threshold, the NR PDCCH is not transmitted to the terminal in the first time domain symbol.

[0196] In one embodiment, the processing module determines the second resource occupancy rate of the NR PDCCH in the control resource set (CORESET). When the second time domain symbol in the CORESET overlaps with the first time domain symbol and the second resource occupancy rate is less than or equal to a second occupancy threshold, the processing module is configured not to transmit the NR PDCCH to the terminal in the first time domain symbol.

[0197] In one embodiment, the apparatus further includes a receiving module configured to receive the capability information transmitted from the terminal and determine whether to support the network device to transmit the NR PDCCH to the terminal in the first time domain symbol based on the capability information when the configuration information of the CRS meets the target configuration.

[0198] Regarding the apparatus in the above embodiments, the specific manner in which each module executes operations has been described in detail in the embodiments related to the method, and detailed description is omitted here.

[0199] For the embodiments of the apparatus, since they basically correspond to the embodiments of the method, the relevant parts may refer to the description of the method embodiments. The embodiments of the apparatus described above are merely exemplary. The modules described as the separated components may or may not be physically separated. The components shown as modules may or may not be physical modules, that is, they may be located in one place or distributed in multiple network modules. Actually, according to actual needs, some or all of the modules can be selected to achieve the purpose of the solution of this embodiment. A person skilled in the art can understand and implement it without creative work.

[0200] Embodiments of the present disclosure further provide a communication device, which includes a processor and a memory for storing a computer program. When the computer program is executed by the processor, the control channel receiving method described in any one of the above embodiments is realized.

[0201] Embodiments of the present disclosure further provide a communication device, which includes a processor and a memory for storing a computer program. When the computer program is executed by the processor, the control channel transmitting method described in any one of the above embodiments is realized.

[0202] Embodiments of the present disclosure further provide a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, the steps of the control channel receiving method described in any one of the above embodiments are realized.

[0203] Embodiments of the present disclosure further provide a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, the steps of the control channel transmitting method described in any one of the above embodiments are realized.

[0204] As shown in FIG. 19, FIG. 19 is a schematic block diagram of an apparatus 1900 for transmitting a control channel according to an embodiment of the present disclosure. The apparatus 1900 may be provided as a base station. Referring to FIG. 19, the apparatus 1900 includes a processing component 1922, a radio transmission / reception component 1924, an antenna component 1926, and a signal processing part specific to the radio interface. The processing component 1922 may further include one or more processors. One processor in the processing component 1922 may be configured to implement the control channel transmission method described in any one of the above embodiments.

[0205] FIG. 20 is a schematic block diagram of an apparatus 2000 for receiving a control channel according to an embodiment of the present disclosure. For example, the apparatus 2000 may be a mobile phone, a computer, a digital broadcast terminal, a message transceiver, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, or the like.

[0206] Referring to FIG. 20, the apparatus 2000 may include one or more of a processing component 2002, a memory 2004, a power component 2006, a multimedia component 2008, an audio component 2010, an input / output (I / O) interface 2012, a sensor component 2014, and a communication component 2016.

[0207] The processing component 2002 generally controls the overall operations of the device 2000, such as operations related to display, phone calls, data communication, camera operations, and recording operations. The processing component 2002 includes one or more processors 2020 for executing instructions to complete all or some of the steps of the above control channel transmission method. Also, the processing component 2002 may include one or more modules to facilitate the interaction between the processing component 2002 and other components. For example, the processing component 2002 may include a multimedia module to facilitate the interaction between the multimedia component 2008 and the processing component 2002.

[0208] The memory 2004 is configured to store various types of data to support the operations in the device 2000. Examples of these data include instructions of any application program or method operated in the device 2000, contact data, phone book data, messages, images, videos, etc. The memory 2004 can be implemented by any type of volatile or non-volatile storage device such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk, or a combination thereof.

[0209] The power supply component 2006 provides power for various components of the device 2000. The power supply component 2006 can include a power management system, one or more power supplies, and other components related to generating, managing, and distributing power for the device 2000.

[0210] The multimedia component 2008 includes a screen that provides one output interface between the device 2000 and the user. In some embodiments, the screen can include a liquid crystal display (LCD) and a touch panel (TP). When the screen includes a touch panel, the screen can be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors for detecting touches, slides, and gestures on the touch panel. The touch sensor can detect not only the boundary of the touch or slide operation, but also the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 2008 includes one front camera and / or rear camera. When the device 2000 is in an operation mode such as a shooting mode or a video mode, the front camera and / or rear camera can receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system, or may have a focal length and an optical zoom capability.

[0211] The audio component 2010 is configured to output and / or input audio signals. For example, the audio component 2010 includes one microphone (MIC), and when the device 2000 is in an operation mode such as a calling mode, a recording mode, and a voice recognition mode, the microphone is configured to receive external audio signals. The received audio signals are further stored in the memory 2004 or transmitted via the communication component 2016. In some embodiments, the audio component 2010 further includes a speaker for outputting audio signals.

[0212] The I / O interface 2012 provides an interface between the processing component 2002 and a peripheral interface module, and the peripheral interface module may be, for example, a keyboard, a click wheel, buttons, etc. These buttons can include, but are not limited to, a home button, a volume button, a start button, and a lock button.

[0213] The sensor component 2014 includes one or more sensors for providing an evaluation of the state of each side surface to the device 2000. For example, the sensor component 2014 can detect the on / off state of the device 2000, the relative positions of components such as the monitor and keypad of the device 2000, and changes in the position of the device 2000 or one component of the device 2000, the presence or absence of contact between the user and the device 2000, the orientation or acceleration / deceleration of the device 2000, and temperature changes of the device 2000. The sensor component 2014 can include a proximity sensor configured to detect whether an object is present in the vicinity without any physical contact. The sensor component 2014 can further include an optical sensor such as a CMOS or CCD image sensor used in imaging applications. In some embodiments, the sensor component 2014 can further include an acceleration sensor, a gyro sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0214] The communication component 2016 is configured to facilitate wired or wireless communication between the device 2000 and other devices. The device 2000 can access a wireless network based on a communication standard, such as WiFi, 2G, 3G, 4G LTE, 5G NR, or a combination thereof. In an exemplary embodiment, the communication component 2016 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 2016 further includes a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented with Radio Frequency Identification (RFID) technology, Infrared Data Association (IrDA) technology, Ultra Wide Band (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0215] In an exemplary embodiment, the device 2000 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to execute the above control channel transmission method.

[0216] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions, such as a memory 2004 including instructions, is provided, and the above instructions can be executed by a processor 2020 of the device 2000 to complete the above control channel transmission method. For example, the non-transitory computer-readable storage medium may be a ROM, Random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

[0217] After considering the specification and practicing the content disclosed herein, those skilled in the art can easily conceive of other embodiments of the present disclosure. The present disclosure intends to cover any modifications, uses, or adaptive changes of the present disclosure, and these modifications, uses, or adaptive changes follow the general principles of the present disclosure and include common general knowledge in the technical field or commonly used technical means not disclosed in the present disclosure. The specification and examples are regarded as merely illustrative, and the true scope and spirit of the present disclosure are provided by the following claims.

[0218] It should be noted that the present disclosure is not limited to the exact structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

[0219] It should be noted that in this specification, relational terms such as "first" and "second" are used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of such an actual relationship or order between these entities or operations. The terms "comprising", "included", or any other variation thereof are intended to cover non-exclusive inclusion, so a process, method, article, or device that includes a series of elements includes not only those elements but also other elements not explicitly shown, or elements inherent to this process, method, article, or device. Without further limitation, elements limited by "comprising one..." do not exclude the presence of other similar elements in the process, method, article, or device that includes the said element.

[0220] As described above, the method and apparatus provided by the embodiments of the present disclosure have been described in detail. In this specification, specific examples are used to explain the principles and embodiments of the present disclosure. The description of the above embodiments is only for helping to understand the method and central idea of the present disclosure. At the same time, those skilled in the art can make changes to the specific embodiments and application scopes according to the idea of the present disclosure. Therefore, the content of this specification should not be understood as a limitation to the present disclosure.

Claims

Claim 1 A control channel reception method applied to a terminal, comprising: determining a first time-domain symbol corresponding to a cell-specific reference signal (CRS), wherein the first time-domain symbol is part or all of the time-domain symbols in the time-domain resource where the CRS is located; judging whether it is desired to receive a new radio physical downlink control channel (NR PDCCH) with the first time-domain symbol based at least on the configuration information of the CRS. A control channel reception method characterized by the above. Claim 2 The step of judging whether it is desired to receive an NR PDCCH with the first time-domain symbol based at least on the configuration information of the CRS includes: determining the number of configured CRS patterns; when the number of CRS patterns is greater than or equal to a pattern number threshold, not desiring to receive an NR PDCCH with the first time-domain symbol. The control channel reception method according to claim 1, characterized by the above. Claim 3 The step of judging whether it is desired to receive an NR PDCCH with the first time-domain symbol based at least on the configuration information of the CRS includes: determining the number of configured CRS patterns and the number of ports corresponding to the CRS patterns; when the number of CRS patterns is greater than or equal to a pattern number threshold and the number of ports corresponding to at least one CRS pattern is greater than or equal to a port number threshold, not desiring to receive an NR PDCCH with the first time-domain symbol. The control channel reception method according to claim 1, characterized by the above. Claim 4 The step of judging whether it is desired to receive an NR PDCCH with the first time-domain symbol based at least on the configuration information of the CRS includes: determining the number of resource elements (REs) occupied by the CRS in the first time-domain symbol and / or a first resource occupancy rate based on the configuration information of the CRS; when the number of resource elements (REs) is less than or equal to an RE number threshold and / or the first resource occupancy rate is less than or equal to a first occupancy rate threshold, not desiring to receive an NR PDCCH with the first time-domain symbol. The control channel reception method according to claim 1, characterized by the above. Claim 5 The RE number threshold value and / or the first occupancy threshold value are related to the aggregation level of the NR PDCCH and / or the format of the downlink control information (DCI) in the NR PDCCH. The control channel reception method according to claim 4, characterized in that.

6. The step of determining whether to receive the NR PDCCH in the first time domain symbol based on at least the CRS configuration information is The step of determining whether to receive the NR PDCCH in the first time domain symbol based on the CRS configuration information and the NR PDCCH configuration information includes The control channel reception method according to claim 1, characterized in that.

7. The step of determining whether to receive the NR PDCCH in the first time domain symbol based on the CRS configuration information and the NR PDCCH configuration information is The step of determining the number of the configured CRS patterns and the aggregation level of the NR PDCCH, and When the number of the CRS patterns is equal to or greater than a number threshold value and the aggregation level is equal to or less than a level threshold value, the step of not desiring to receive the NR PDCCH in the first time domain symbol, including The control channel reception method according to claim 6, characterized in that.

8. The step of determining whether to receive the NR PDCCH in the first time domain symbol based on at least the CRS configuration information is The step of determining the second resource occupancy rate of the CRS in the control resource set (CORESET) of the NR PDCCH, wherein the second time domain symbol and the first time domain symbol in the CORESET overlap, and When the second resource occupancy rate is equal to or greater than a second occupancy threshold value, the step of not desiring to receive the NR PDCCH in the first time domain symbol, including The control channel reception method according to claim 6, characterized in that.

9. Further including the step of transmitting capability information to the network device, The capability information is for indicating whether the terminal supports receiving the NR PDCCH in the first time domain symbol when the CRS configuration information meets the target configuration. The control channel reception method according to any one of claims 1 to 8, characterized in that...

10. A control channel transmission method applied to a network device, comprising: determining a first time domain symbol corresponding to a cell-specific reference signal (CRS) set for a terminal, wherein the first time domain symbol is part or all of the time domain symbols in the time domain resource where the CRS is located; judging whether to transmit a new radio physical downlink control channel (NR PDCCH) to the terminal using the first time domain symbol based on at least the setting information of the CRS. The control channel transmission method, characterized in that...

11. The step of judging whether to transmit NR PDCCH to the terminal using the first time domain symbol based on at least the setting information of the CRS includes: determining the number of patterns of the set CRS; when the number of patterns of the CRS is greater than or equal to a pattern number threshold, not transmitting NR PDCCH to the terminal using the first time domain symbol. The control channel transmission method according to claim 10, characterized in that...

12. The step of judging whether to transmit NR PDCCH to the terminal using the first time domain symbol based on at least the setting information of the CRS includes: determining the number of patterns of the CRS and the number of ports corresponding to the pattern of the CRS; when the number of patterns of the CRS is greater than or equal to a pattern number threshold and the number of ports corresponding to at least one pattern of the CRS is greater than or equal to a port number threshold, not transmitting NR PDCCH to the terminal using the first time domain symbol. The control channel transmission method according to claim 10, characterized in that...

13. The step of judging whether to transmit NR PDCCH to the terminal using the first time domain symbol based on at least the setting information of the CRS includes: determining the number of resource elements (REs) occupied by the CRS in the first time domain symbol and / or the first resource occupancy rate based on the setting information of the CRS; When the number of the resource elements (REs) is less than or equal to an RE number threshold and / or the first resource occupancy rate is less than or equal to a first occupancy rate threshold, not transmitting NR PDCCH to the terminal in the first time domain symbol; The control channel transmission method according to claim 10, characterized in that;

14. The RE number threshold and / or the first occupancy rate threshold are related to the aggregation level of the NR PDCCH and / or the format of the downlink control information (DCI) in the NR PDCCH; The control channel transmission method according to claim 13, characterized in that;

15. The step of determining whether to transmit NR PDCCH to the terminal in the first time domain symbol based on at least the configuration information of the CRS includes: The step of determining whether to transmit NR PDCCH to the terminal in the first time domain symbol based on the configuration information of the CRS and the configuration information of the NR PDCCH; The control channel transmission method according to claim 10, characterized in that;

16. The step of determining whether to transmit NR PDCCH to the terminal in the first time domain symbol based on the configuration information of the CRS and the configuration information of the NR PDCCH includes: Determining the number of patterns of the CRS and the aggregation level of the NR PDCCH; When the number of patterns of the CRS is greater than or equal to a number threshold and the aggregation level is less than or equal to a level threshold, not transmitting NR PDCCH to the terminal in the first time domain symbol; The control channel transmission method according to claim 15, characterized in that;

17. The step of determining whether to transmit NR PDCCH to the terminal in the first time domain symbol based on at least the configuration information of the CRS includes: Determining the second resource occupancy rate of the CRS in a control resource set (CORESET), wherein a second time domain symbol and the first time domain symbol in the CORESET overlap; When the second resource occupancy rate is greater than or equal to a second occupancy rate threshold, not transmitting NR PDCCH to the terminal in the first time domain symbol; The control channel transmission method according to claim 15, characterized in that;

18. A step of receiving the capability information transmitted from the terminal; Based on the capability information, when the configuration information of the CRS satisfies the target configuration, a step of determining whether to transmit the NR PDCCH on the first time domain symbol is further included. The control channel transmission method according to any one of claims 10 to 17, characterized in that.

19. A control channel receiving device applied to a terminal, Determining a first time domain symbol corresponding to a cell-specific reference signal (CRS), the first time domain symbol being part or all of the time domain symbols in the time domain resource where the CRS is located, and based at least on the configuration information of the CRS, including a processing module configured to determine whether to receive a new radio physical downlink control channel (NR PDCCH) on the first time domain symbol. A control channel receiving device, characterized in that.

20. A control channel transmission method applied to a network device, Determining a first time domain symbol corresponding to a cell-specific reference signal (CRS) set for a terminal, the first time domain symbol being part or all of the time domain symbols in the time domain resource where the CRS is located, and based at least on the configuration information of the CRS, including a processing module configured to determine whether to transmit a new radio physical downlink control channel (NR PDCCH) to the terminal on the first time domain symbol. A control channel transmission method, characterized in that.

21. A communication device, A processor and A memory for storing a computer program, and when the computer program is executed by the processor, realizes the control channel receiving method according to any one of claims 1 to 9. A communication device, characterized in that.

22. A communication device, A processor and A memory for storing a computer program, and when the computer program is executed by the processor, realizes the control channel transmission method according to any one of claims 10 to 18. A communication device, characterized in that.

23. A communication device, A processor and A memory for storing a computer program, and when the computer program is executed by the processor, realizes the control channel transmission method according to any one of claims 10 to 18. A communication device, characterized in that.

24. A computer-readable storage medium storing a computer program, wherein when the computer program is executed by a processor, the steps of the control channel receiving method according to any one of claims 1 to 9 are realized. A computer-readable storage medium characterized by the above.

24. A computer-readable storage medium storing a computer program, wherein when the computer program is executed by a processor, the steps of the control channel transmitting method according to any one of claims 10 to 18 are realized. A computer-readable storage medium characterized by the above.

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