Physical downlink control channel sending and receiving method and device

Abstract

The present disclosure relates to a method for sending a physical downlink control channel, including: determining a first resource occupied by a long-term evolution cell-specific reference signal LTE CRS, and a second resource occupied by new air interface physical downlink control channel NR PDCCH related information to be sent; determining that at least one resource element RE in the second resource conflicts with the first resource; adjusting the second resource and obtaining a third resource, the third resource not conflicting with the first resource; sending the NR PDCCH related information to the terminal on the third resource. According to the present disclosure, while ensuring that the RE in the resource corresponding to the NR PDCCH related information does not conflict with the first resource, the influence of LTE CRS on the NR PDCCH related information is reduced, and a large number of REs that do not conflict with the first resource are avoided from being abandoned, which is conducive to improving transmission performance and scheduling flexibility.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a physical downlink control channel sending method, a physical downlink control channel receiving method, a physical downlink control channel sending device, a physical downlink control channel receiving device, a communication device and a computer-readable storage medium. Background Art

[0002] Currently, the LTE (Long Term Evolution) system and the NR (New Radio) system can coexist in the same spectrum. The LTE system needs to continuously send CRS (Cell-specific Reference Signal), which will cause strong interference to the NR system.

[0003] In related technologies, in order to prevent LTE CRS from causing strong interference to NR PDCCH (Physical Downlink Control Channel) and causing the NR device to receive NR PDCCH performance degradation, it is stipulated that when receiving NR PDCCH, NR devices only detect PDCCH candidates that do not overlap with LTE CRS resources. However, this will seriously restrict the transmission performance and scheduling flexibility of NR PDCCH. Summary of the invention

[0004] In view of this, the embodiments of the present disclosure propose a physical downlink control channel sending method, a physical downlink control channel receiving method, a physical downlink control channel sending device, a physical downlink control channel receiving device, a communication device and a computer-readable storage medium to solve the technical problems in the related art.

[0005] According to a first aspect of an embodiment of the present disclosure, a method for sending a physical downlink control channel is proposed, which is executed by a network side device. The method includes: determining a first resource occupied by a long-term evolution cell-specific reference signal LTE CRS, and a second resource occupied by new air interface physical downlink control channel NR PDCCH related information to be sent; determining that at least one resource element RE in the second resource conflicts with the first resource; adjusting the second resource and obtaining a third resource, the third resource not conflicting with the first resource; and sending the NR PDCCH related information to the terminal on the third resource.

[0006] According to the second aspect of an embodiment of the present disclosure, a method for receiving a physical downlink control channel is proposed, which is executed by a terminal. The method includes: determining a first resource occupied by a long-term evolution cell-specific reference signal LTE CRS, and a second resource occupied by new air interface physical downlink control channel NR PDCCH related information to be sent; determining that at least one resource element RE in the second resource conflicts with the first resource; determining a third resource obtained after adjusting the second resource, the third resource not conflicting with the first resource; and receiving the NRPDCCH related information sent by the network side device on the third resource.

[0007] According to a third aspect of an embodiment of the present disclosure, a physical downlink control channel sending device is provided, including:

[0008] The processing module is configured to determine a first resource occupied by a long term evolution cell-specific reference signal LTE CRS and a second resource occupied by new air interface physical downlink control channel NR PDCCH related information to be sent; and determine that at least one resource element RE in the second resource conflicts with the first resource; adjust the second resource and obtain a third resource, wherein the third resource does not conflict with the first resource;

[0009] The sending module is configured to send the NR PDCCH related information to the terminal on the third resource.

[0010] According to a fourth aspect of an embodiment of the present disclosure, a physical downlink control channel receiving device is provided, including:

[0011] The processing module is configured to determine a first resource occupied by a long term evolution cell-specific reference signal LTE CRS and a second resource occupied by relevant information of a new radio interface physical downlink control channel NR PDCCH to be sent; and determine that at least one resource element RE in the second resource conflicts with the first resource; and determine a third resource obtained after adjusting the second resource, wherein the third resource does not conflict with the first resource;

[0012] The receiving module is configured to receive the NR PDCCH related information sent by the network side device on the third resource.

[0013] According to a fifth aspect of an embodiment of the present disclosure, a communication device is proposed, comprising: a processor; and a memory for storing a computer program; wherein, when the computer program is executed by the processor, the above-mentioned physical downlink control channel sending method is implemented.

[0014] According to a sixth aspect of an embodiment of the present disclosure, a communication device is proposed, comprising: a processor; a memory for storing a computer program; wherein, when the computer program is executed by the processor, the above-mentioned physical downlink control channel receiving method is implemented.

[0015] According to a seventh aspect of an embodiment of the present disclosure, a computer-readable storage medium is proposed for storing a computer program. When the computer program is executed by a processor, the steps in the above-mentioned physical downlink control channel sending method are implemented.

[0016] According to an eighth aspect of an embodiment of the present disclosure, a computer-readable storage medium is proposed for storing a computer program. When the computer program is executed by a processor, the steps in the above-mentioned physical downlink control channel receiving method are implemented.

[0017] According to an embodiment of the present disclosure, when it is determined that at least one resource element RE in the second resource conflicts with the first resource, the network side device does not directly give up sending the NR PDCCH related information containing the conflicting RE, but can adjust the second resource and obtain the third resource. Since the obtained third resource does not conflict with the first resource, the NR PDCCH related information is sent on the third resource. While ensuring that the RE in the resource corresponding to the NR PDCCH related information does not conflict with the first resource, the impact of LTE CRS on the NR PDCCH related information is reduced, and a large number of REs that do not conflict with the first resource are avoided from being abandoned, which is beneficial to improving transmission performance and scheduling flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic flow chart of a method for sending a physical downlink control channel according to an embodiment of the present disclosure.

[0020] Figure 2 It is a schematic diagram of a first resource according to an embodiment of the present disclosure.

[0021] Figure 3 It is a schematic flow chart of another method for sending a physical downlink control channel according to an embodiment of the present disclosure.

[0022] Figure 4 It is a schematic flow chart of another method for sending a physical downlink control channel according to an embodiment of the present disclosure.

[0023] Figure 5 This is a schematic diagram showing a conflict between an RE corresponding to an NR PDCCH DMRS and a first resource according to an embodiment of the present disclosure.

[0024] Figure 6 It is a schematic flow chart of another method for sending a physical downlink control channel according to an embodiment of the present disclosure.

[0025] Figure 7 is a schematic diagram of a third resource according to an embodiment of the present disclosure.

[0026] Figure 8 It is a schematic flow chart of another method for sending a physical downlink control channel according to an embodiment of the present disclosure.

[0027] Fig. 9 is a schematic diagram of another third resource according to an embodiment of the present disclosure.

[0028] Fig.10 It is a schematic flow chart of another method for sending a physical downlink control channel according to an embodiment of the present disclosure.

[0029] Fig.11 is a schematic diagram of yet another third resource according to an embodiment of the present disclosure.

[0030] Fig.12 It is a schematic flow chart of another method for sending a physical downlink control channel according to an embodiment of the present disclosure.

[0031] Fig.13 is a schematic diagram of yet another third resource according to an embodiment of the present disclosure.

[0032] Fig.14 It is a schematic flow chart of a physical downlink control channel receiving method according to an embodiment of the present disclosure.

[0033] Fig.15 It is a schematic flow chart of another physical downlink control channel receiving method according to an embodiment of the present disclosure.

[0034] Fig.16 It is a schematic flow chart of another physical downlink control channel receiving method according to an embodiment of the present disclosure.

[0035] Fig.17 It is a schematic flow chart of another physical downlink control channel receiving method according to an embodiment of the present disclosure.

[0036] Fig.18 It is a schematic flow chart of another physical downlink control channel receiving method according to an embodiment of the present disclosure.

[0037] Fig.19 It is a schematic flow chart of another physical downlink control channel receiving method according to an embodiment of the present disclosure.

[0038] Fig. 20 It is a schematic flow chart of another physical downlink control channel receiving method according to an embodiment of the present disclosure.

[0039] Fig.21 It is a schematic block diagram of a physical downlink control channel sending device according to an embodiment of the present disclosure.

[0040] Fig. 22 It is a schematic block diagram of a physical downlink control channel receiving device according to an embodiment of the present disclosure.

[0041] Fig.23 It is a schematic block diagram of a device for sending a physical downlink control channel according to an embodiment of the present disclosure.

[0042] Fig.24 It is a schematic block diagram of a device for receiving a physical downlink control channel according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0044] The terms used in the disclosed embodiments are only for the purpose of describing specific embodiments and are not intended to limit the disclosed embodiments. The singular forms of "a", "an" and "the" used in the disclosed embodiments and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0045] It should be understood that although the terms first, second, third, etc. may be used to describe various information in the disclosed embodiments, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the disclosed embodiments, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0046] For the purpose of brevity and ease of understanding, the terms used herein to characterize size relationships are "greater than" or "less than", "higher than" or "lower than". However, those skilled in the art can understand that the term "greater than" also covers the meaning of "greater than or equal to", and "less than" also covers the meaning of "less than or equal to"; the term "higher than" covers the meaning of "higher than or equal to", and "lower than" also covers the meaning of "lower than or equal to".

[0047] Figure 1 It is a schematic flow chart of a physical downlink control channel sending method shown in an embodiment of the present disclosure. The physical downlink control channel sending method shown in this embodiment can be executed by a network side device, and the network side device can communicate with a terminal, and the terminal includes but is not limited to a mobile phone, a tablet computer, a wearable device, a sensor, an Internet of Things device and other communication devices, and the network side device includes but is not limited to a network side device in a 4G, 5G, 6G and other communication systems, such as a base station, a core network, etc.

[0048] like Figure 1 As shown, the physical downlink control channel sending method may include the following steps:

[0049] In step S101, a first resource occupied by a long term evolution cell-specific reference signal LTE CRS and a second resource occupied by new radio interface physical downlink control channel NR PDCCH related information to be sent are determined;

[0050] In step S102, it is determined that at least one resource element RE in the second resource conflicts with the first resource;

[0051] In step S103, the second resource is adjusted and a third resource is obtained, where the third resource does not conflict with the first resource;

[0052] In step S104, the NR PDCCH related information is sent to the terminal on the third resource.

[0053] Figure 2 It is a schematic diagram of a first resource according to an embodiment of the present disclosure.

[0054] In one embodiment, taking the LTE cell identifier (Cell ID) equal to 0, the LTE CRS supports 4 ports as an example, namely antenna port 0, antenna port 1, antenna port 2 and antenna port 3. The LTE CRS corresponding to each antenna port occupies different resources respectively, and the resources occupied by the LTE CRS corresponding to the four antenna ports are superimposed together as the first resource.

[0055] like Figure 2As shown in FIG. 1 , in one RB (Resource Block), there are 14 symbols (e.g., orthogonal frequency division multiplexing OFDM symbols) in the time domain and 12 REs (Resource Element) in the frequency domain. For example, in one symbol, the REs are numbered from bottom to top as RE#0 to RE#11, as shown in FIG. Figure 2 As shown, the first resource occupies REs numbered RE#0, RE#3, RE#6, and RE#9 on the 1st, 2nd, 5th, 8th, 9th, and 12th symbols.

[0056] It should be noted that the LTE CRS can be sent by the LTE network side device, the NR PDCCH related information can be sent by the NR network side device, the NR network side device can determine the second resource occupied by the NR PDCCH related information, and the NR network side device can also determine the first resource occupied by the LTE CRS, for example, it can be determined by communicating with the LTE network side device, or it can be determined based on a protocol agreement.

[0057] In addition, the terminal can also determine the first resource and the second resource. For example, the terminal can determine the first resource based on the protocol agreement, or determine the second resource based on the protocol agreement, or determine the second resource based on the NR network side device configuration.

[0058] In the related technology, since the first resource occupied by the LTE CRS has been determined, it is difficult for the NR network side device to change the first resource. When it is determined that at least one RE in the second resource occupied by the NR PDCCH-related information conflicts with the first resource, for example, at least one RE in the second resource overlaps with at least one RE in the first resource, the terminal will not receive the NR PDCCH-related information containing the overlapping RE; accordingly, the NR network side device will not send the NR PDCCH-related information containing the overlapping RE.

[0059] In one embodiment, the NR PDCCH related information includes at least one of the following:

[0060] NR PDCCH demodulation reference signal NR PDCCH DMRS;

[0061] Downlink control information DCI carried by NR PDCCH.

[0062] In the case where the NR PDCCH-related information includes the DCI, the terminal in the related technology does not expect to receive the PDCCH candidate including the overlapping RE; accordingly, the NR network side device will not send the PDCCHcandidate including the overlapping RE.

[0063] Since the PDCCH candidate does not only include individual REs, but also includes at least one CCE (Control Channel Element), and one CCE includes a large number of REs. The NR network side device does not send the PDCCH candidate including the overlapping RE, which means that the PDCCH candidate that the NR network side device originally needs to send, if it includes the overlapping RE, then the entire PDCCH candidate will not be sent, which results in that DCI is not sent on the CCE included in the PDCCH candidate (wherein there may be REs that do not conflict with the first resource), then there will be a large number of REs (such as REs that do not conflict with the first resource) that are not used, which seriously restricts the transmission performance and scheduling flexibility of the NR PDCCH.

[0064] According to an embodiment of the present disclosure, when it is determined that at least one resource element RE in the second resource conflicts with the first resource, the network side device does not directly give up sending the NR PDCCH related information containing the conflicting RE, but can adjust the second resource and obtain the third resource. Since the obtained third resource does not conflict with the first resource, the NR PDCCH related information is sent on the third resource. While ensuring that the RE in the resource corresponding to the NR PDCCH related information does not conflict with the first resource, the impact of LTE CRS on the NR PDCCH related information is reduced, and a large number of REs that do not conflict with the first resource are avoided from being abandoned, which is beneficial to improving transmission performance and scheduling flexibility.

[0065] It should be noted that the way in which the network side device adjusts the second resource to obtain the third resource can be indicated by the network side device to the terminal, for example, through system information, paging signaling, etc.; it can also be determined based on a protocol agreement, and the terminal can also determine the way in which the network side device adjusts the second resource to obtain the third resource based on the protocol agreement.

[0066] For example, for the terminal, when at least one resource element RE in the second resource conflicts with the first resource, a third resource obtained after adjusting the second resource can be determined, and then the NR PDCCH related information sent by the network side device is received on the third resource. As for how to adjust the second resource to obtain the third resource, the terminal can determine it according to the instruction of the network side device or according to the protocol agreement.

[0067] Regarding NR PDCCH related information, the embodiments of the present disclosure are mainly exemplified by NR PDCCH DMRS and DCI. In practical applications, the embodiments of the present disclosure can also be applied to other NR PDCCH related information as needed. The following first uses several embodiments to illustrate the case where the NR PDCCH related information includes the DCI.

[0068] Figure 3 FIG. 1 is a schematic flow chart of another method for sending a physical downlink control channel according to an embodiment of the present disclosure. Figure 3 As shown, in a case where the NR PDCCH related information includes DCI, the adjusting the second resource and obtaining the third resource includes:

[0069] In step S301, the second resource is punctured according to the first resource.

[0070] In one embodiment, the network side device may puncture the second resource according to the first resource, for example, removing the REs in the second resource that conflict with the first resource by puncturing, and the remaining resources may be used as the third resource. Then for the network side device, it is equivalent to sending DCI on the REs in the second resource that do not conflict with the first resource. The operation process is relatively simple and easy to implement.

[0071] Since the network side device performs a sending operation, and the terminal performs a receiving operation, when the network side device punches the second resource according to the first resource, the specific operation of the terminal punching the second resource according to the first resource may be different from the specific operation of the network side device. For example, the terminal will not consider the existence of LTECRS and receive DCI on the second resource.

[0072] Figure 4 FIG. 1 is a schematic flow chart of another method for sending a physical downlink control channel according to an embodiment of the present disclosure. Figure 4 As shown, adjusting the second resource and obtaining the third resource includes:

[0073] In step S401, rate matching (RM) is performed on the second resource according to the first resource.

[0074] In one embodiment, the network side device can perform rate matching on the second resource according to the first resource, for example, determining the RE in the second resource that does not conflict with the first resource as the third resource, and then sending DCI on the third resource. Correspondingly, the terminal can determine the RE in the second resource that does not conflict with the first resource as the third resource, and then receive DCI on the third resource.

[0075] The following uses several embodiments to illustrate the case where NR PDCCH related information includes NR PDCCH DMRS.

[0076] It should be noted that the DCI in the above embodiment is the information carried by the NR PDCCH, and the NR PDCCH DMRS is not the information carried by the NR PDCCH, but the information used to demodulate the NR PDCCH. However, in some cases, the NR PDCCH DMRS will also be set in the control resource set CORESET where the NR PDCCH is located and sent, so both the RE corresponding to the NR PDCCH DMRS and the RE corresponding to the DCI may conflict with the first resource.

[0077] Although when sending DCI, even if the RE corresponding to the DCI conflicts with the first resource, the DCI can be sent by puncturing or rate matching, when the RE corresponding to the NR PDCCH DMRS conflicts with the first resource, it is generally not possible to send the NR PDCCH DMRS by puncturing or rate matching, but it is necessary to consider other methods to determine the third resource.

[0078] Figure 5 This is a schematic diagram showing a conflict between an RE corresponding to an NR PDCCH DMRS and a first resource according to an embodiment of the present disclosure.

[0079] like Figure 5 As shown, in the resource element group REG (Resource Element Group) in NR, the pattern of NR PDCCH DMRS is that NR PDCCH DMRS is distributed in RE#1, RE#5 and RE#9.

[0080] For example, the duration of CORESET is 3 time domain symbols, such as the first 3 symbols in the RB. Then when the NR PDCCH DMRS is located in the CORESET, the second resource conflicts with the first resource on RE#9 of the first 2 symbols in the RB.

[0081] The following is mainly based on Figure 5 The illustrated embodiment provides an exemplary description of the situation where the NR PDCCH related information includes the NR PDCCH DMRS.

[0082] Figure 6 FIG. 1 is a schematic flow chart of another method for sending a physical downlink control channel according to an embodiment of the present disclosure. Figure 6 As shown, in a case where the NR PDCCH related information includes the NR PDCCH DMRS, the adjusting the second resource and obtaining the third resource includes:

[0083] In step S601, the frequency domain position of the RE in the second resource that conflicts with the first resource is changed (specifically, the frequency domain position of the conflicting RE carrying the NR PDCCH DMRS is changed) to obtain the third resource.

[0084] In one embodiment, for the RE in the second resource that conflicts with the first resource, the network side device can change the frequency domain position, for example, move to a high frequency, or move to a low frequency, and the moving distance can be one or more REs. The specific method of changing the frequency domain position can be determined according to the indication of the network side device, or can be determined based on a protocol agreement.

[0085] Accordingly, on the basis that the RE corresponding to the NR PDCCH DMRS does not conflict with the RE corresponding to the LTE CRS, it can be ensured that the number of NR PDCCH DMRS carried on each REG remains unchanged, which is conducive to ensuring the performance of NR PDCCH demodulation based on NR PDCCH DMRS.

[0086] Figure 7 is a schematic diagram of a third resource according to an embodiment of the present disclosure.

[0087] like Figure 7 As shown, for example, if the second resource conflicts with the first resource on RE#9 of the first two symbols in the RB, the frequency domain position of the second resource on the two REs can be changed, for example, the second resource is moved from RE#9 to RE#10, that is, from carrying NR PDCCH DMRS through the RE corresponding to RE#9 to carrying NR PDCCH DMRS through the RE corresponding to RE#10. Accordingly, there are still 3 REs on each REG for carrying NR PDCCH DMRS, which is conducive to ensuring the performance of demodulating NRPDCCH based on NR PDCCH DMRS.

[0088] Figure 8 FIG. 1 is a schematic flow chart of another method for sending a physical downlink control channel according to an embodiment of the present disclosure. Figure 8 As shown, in a case where the NR PDCCH related information includes the NR PDCCH DMRS, the adjusting the second resource and obtaining the third resource includes:

[0089] In step S801, determining a time domain symbol corresponding to the first resource in a control resource set CORESET where the NR PDCCH is located;

[0090] In step S802, determining a first RE that is not used to send the LTE CRS among the REs corresponding to the time domain symbol;

[0091] In step S803, a resource element group REG is mapped in the first RE, and a pattern of the NR PDCCH DMRS in the REG is determined;

[0092] In step S804, the NR PDCCH DMRS is mapped in the REG according to the pattern.

[0093] In one embodiment, when the NR PDCCH related information includes the NR PDCCH DMRS, that is, there is a conflict between the RE corresponding to the NR PDCCH DMRS and the RE corresponding to the LTE CRS, the time domain symbol corresponding to the first resource can be determined in the CORESET where the NR PDCCH is located, and the NR PDCCH DMRS is also in the CORESET. Then, in the RE corresponding to the time domain symbol, the first RE that is not used to send the LTE CRS is determined, and then the REG is mapped in the first RE, and the pattern of the NR PDCCH DMRS in the REG is determined, and finally the NR PDCCH DMRS is mapped in the REG according to the pattern.

[0094] Since the LTE CRS no longer exists in the first RE, REG is mapped in the first RE, and there will be no conflict between the RE mapped to the REG and the RE corresponding to the LTE CRS. Then, the NR PDCCH DMRS is mapped to the REG according to the pattern of the NR PDCCH DMRS in the REG, so there will be no conflict between the RE corresponding to the NR PDCCH DMRS and the RE corresponding to the LTE CRS.

[0095] Accordingly, on the basis that the RE corresponding to the NR PDCCH DMRS does not conflict with the RE corresponding to the LTE CRS, the number of NR PDCCH DMRS carried on each REG is ensured to remain unchanged, which is conducive to ensuring the performance of NR PDCCH demodulation based on NR PDCCH DMRS.

[0096] In one embodiment, the REG structure is a newly defined structure, or is a structure of an existing REG.

[0097] The structure of the REG mapped in the first RE may be the structure of an existing REG, for example, one REG corresponds to one symbol in the time domain and corresponds to 12 REs in the frequency domain; the structure of the REG mapped in the first RE may also be a newly defined structure, for example, one REG corresponds to one symbol in the time domain and corresponds to 18 REs in the frequency domain.

[0098] In one embodiment, the pattern is a newly defined pattern or an existing pattern.

[0099] In the REG mapped to the first RE, the pattern of the NR PDCCH DMRS can be an existing pattern, for example, the REs corresponding to the NR PDCCH DMRS in the REG are RE#1, RE#5 and RE#9; it can also be a defined pattern, which can be set as needed.

[0100] It should be noted that regarding the REG structure and the pattern of the NR PDCCH DMRS, the terminal can determine it according to the instructions of the network side equipment or based on the protocol agreement.

[0101] Fig. 9 is a schematic diagram of another third resource according to an embodiment of the present disclosure.

[0102] For example, the REG structure is a newly defined structure, which corresponds to one symbol in the time domain and 18 REs in the frequency domain. The pattern of the NR PDCCH DMRS is an existing pattern. For example, the REs corresponding to the NR PDCCH DMRS in the REG are RE#1, RE#5 and RE#9.

[0103] like Fig. 9 As shown, the situation of CORESET in 3 RBs (RB#n, RB#n+1, RB#n+2) is shown. Of course, CORESET does not correspond to 3 RBs in the time domain, for example, it corresponds to fewer RBs or more RBs.

[0104] For example, the first resources corresponding to the first two symbols of LTE CR in the RB are RE#0, RE#3, RE#6, and RE#9 in each RB. Based on this embodiment, the first RE that is not used to send LTE CRS in the first two symbols can be determined, that is, RE#1, RE#2, RE#4, RE#5, RE#7, RE#8, RE#10, and RE#11 in each RB in the first two symbols.

[0105] Then, REG (e.g., eREG) can be mapped in the determined first RE. For example, REG corresponds to one symbol in the time domain and 12 REs in the frequency domain. Since there are 24 first REs in the frequency domain of 3 RBs in the first two symbols, 2 REGs (eREG#0 and eREG#1, respectively) can be mapped on these 24 first REs. The pattern of NR PDCCH DMRS in REG can still use the existing pattern. For example, the corresponding REs of NR PDCCH DMRS in the REG mapped to the first RE are RE#1, RE#5, and RE#9 (the RE numbering in the first RE ignores the RE corresponding to LTE CRS).

[0106] In one embodiment, after mapping the REG in the first RE, if there are remaining REs that are insufficient to map the entire REG, the method further includes:

[0107] The NR PDCCH DMRS is not mapped in the remaining REs; or,

[0108] In the remaining REs, the NR PDCCH DMRS is mapped according to the existing pattern of the NR PDCCH DMRS in the existing REG structure.

[0109] In some cases, the number of the first REs can be divided by the number of REs in the REG, so when mapping REGs in the first RE, an integer number of REGs can be mapped, for example Fig. 9 In the illustrated embodiment, the number of REs in the REG is 12, and the number of first REs is 24.

[0110] However, in some cases, the number of first REs cannot divide the number of REs in REG, for example, Fig. 9 Based on the shown embodiment, there is also 1 RB, in which the pattern of LTE CRS is the same as that of the other 3 RBs, so the number of first REs is 32. When the number of REs in REG is 12, after mapping 2 REGs on the first RE, there will be 8 first REs left, which are not enough to map the complete REG.

[0111] In this case, NR PDCCH DMRS may not be mapped in these remaining REs; or, in these remaining REs, the NR PDCCH DMRS may be mapped according to the existing pattern of the NR PDCCH DMRS in the existing REG structure, for example, NR PDCCH DMRS may be mapped according to RE#1, RE#5 and RE#9. Since REG is not mapped on the remaining REs in this case, REG still contains REs corresponding to LTE CRS. Therefore, LTE CRS exists on RE#9. Then, among the remaining 8 REs, NR PDCCH DMRS can only be mapped on RE#1 and RE#5.

[0112] Fig.10 FIG. 1 is a schematic flow chart of another method for sending a physical downlink control channel according to an embodiment of the present disclosure. Fig.10 As shown, in a case where the NR PDCCH related information includes the NR PDCCH DMRS, the adjusting the second resource and obtaining the third resource includes:

[0113] In step S1001, the time domain symbol corresponding to the CORESET where the NR PDCCH is located is adjusted, wherein the adjusted time domain symbol corresponding to the CORESET is different from the time domain symbol corresponding to the first resource.

[0114] In one embodiment, for the RE in the second resource that conflicts with the first resource, the time domain position can be changed, for example, moving backward in the time domain, and the moving distance can be one or more time domain symbols. The specific method of changing the time domain position can be determined according to the indication of the network side device, and can also be determined based on the protocol agreement.

[0115] Since the time domain symbol corresponding to the adjusted CORESET is different from the time domain symbol corresponding to the first resource, based on the fact that the RE corresponding to the NR PDCCH DMRS does not conflict with the RE corresponding to the LTE CRS, it can be ensured that the number of NR PDCCH DMRS carried on each REG remains unchanged, which is beneficial to ensuring the performance of NR PDCCH demodulation based on NR PDCCH DMRS.

[0116] Fig.11 is a schematic diagram of yet another third resource according to an embodiment of the present disclosure.

[0117] like Fig.11 As shown, in Figure 5In the case of the first resource shown, for example, CORESET occupies the first 3 symbols in an RB, and the REs corresponding to NR PDCCH DMRS in REG are RE#1, RE#5 and RE#9. In this case, RE#9 on the first symbol and the second symbol conflicts with the first resource, so adjustments can be made to the first symbol and the second symbol, such as shifting them back in the time domain.

[0118] Since after the 3rd symbol, there is an RE corresponding to LTE CRS on the 5th symbol, and there is no RE corresponding to LTE CRS on the 4th symbol and the 6th symbol, the time domain symbols corresponding to CORESET can be adjusted to the 3rd symbol (as the first time domain symbol of CORESET), the 4th symbol (as the second time domain symbol of CORESET) and the 6th symbol (as the third time domain symbol of CORESET).

[0119] In one embodiment, the adjusted time domain symbol corresponding to the CORESET is a continuous time domain symbol, or a discrete time domain symbol.

[0120] Based on the difference between LTE CRS and CORESET duration, the time domain symbol corresponding to the adjusted CORESET can be a continuous time domain symbol or a discrete time domain symbol. Fig.11 As shown, the time domain symbol corresponding to the adjusted CORESET is a discrete time domain symbol; and when the CORESET duration is 2 time domain symbols, the time domain symbol corresponding to the CORESET can be adjusted to the third symbol and the fourth symbol, so that the time domain symbol corresponding to the adjusted CORESET is a continuous time domain symbol.

[0121] In one embodiment, adjusting the time domain symbol corresponding to the CORESET where the NR PDCCH is located includes:

[0122] Adjust the time domain symbol corresponding to the CORESET where the NR PDCCH is located according to a specified method, wherein the network side device and the terminal pre-store the specified method.

[0123] The network side device can adjust the time domain symbol corresponding to the CORESET where the NR PDCCH is located according to a specified method. In this case, the network side device and the terminal can pre-store the specified method to ensure that after receiving the PDCCH, the terminal can also determine the time domain symbol corresponding to the adjusted CORESET according to the specified method.

[0124] In one embodiment, the method further comprises:

[0125] The terminal is indicated the time domain symbol corresponding to the adjusted CORESET through radio access control layer (RRC, Radio Resource Control) signaling.

[0126] In addition to adjusting the time domain symbols corresponding to CORESET according to a pre-stored specified method, the network side device also adjusts the time domain symbols corresponding to CORESET as needed, and can indicate to the terminal through RRC signaling (for example, through a codebook bitmap indication) the adjusted time domain symbols corresponding to the CORESET, so that the terminal can determine how to adjust the time domain symbols corresponding to the CORESET according to the RRC signaling, and further determine the time domain symbols corresponding to the adjusted CORESET.

[0127] Fig.12 FIG. 1 is a schematic flow chart of another method for sending a physical downlink control channel according to an embodiment of the present disclosure. Fig.12 As shown, in a case where the NR PDCCH related information includes the NR PDCCH DMRS, the adjusting the second resource and obtaining the third resource includes:

[0128] In step S1201, a first time domain symbol different from the time domain symbol corresponding to the first resource is determined in the time domain symbols corresponding to the second resource, and the resource corresponding to the first time domain symbol is determined to be the third resource.

[0129] In one embodiment, the network side device can determine a first time domain symbol different from the time domain symbol corresponding to the first resource in the time domain symbol corresponding to the second resource, and then determine that the resource corresponding to the first time domain symbol is the third resource, which is equivalent to sending NR PDCCHDMRS only on the time domain symbols in the second resource that do not conflict with the first resource.

[0130] Fig.13 is a schematic diagram of yet another third resource according to an embodiment of the present disclosure.

[0131] like Fig.13 As shown, in Figure 5 Based on the first resource and the second resource shown, there is NRPDCCH DMRS on the first 3 symbols, wherein there is LTE CRS on the first 2 symbols, and there is a conflict between the second resource and the first resource on the first 2 symbols, specifically, the second resource RE#9 on the first symbol and the second symbol conflicts with the first resource.

[0132] In this case, this embodiment can determine that the resource corresponding to the third symbol is the third resource (the frequency domain range can be the frequency domain range corresponding to CORESET). Since there is no LTE CRS on the third symbol, sending NR PDCCH DMRS on the third symbol will not conflict with LTE CRS. On this basis, the CORESET duration can be set to remain unchanged, for example Fig.13 As shown, there are still 3 symbols, but the NR PDCCH DMRS is not sent in the first two symbols, but the NR PDCCH, such as DCI, is still sent.

[0133] Accordingly, on the basis that the RE corresponding to the NR PDCCH DMRS does not conflict with the RE corresponding to the LTE CRS, it can be ensured that the number of NR PDCCH DMRS carried on each REG remains unchanged, which is conducive to ensuring the performance of NR PDCCH demodulation based on NR PDCCH DMRS.

[0134] In one embodiment, there is at least one of the first time domain symbols in the time domain symbols corresponding to the second resource. In order to ensure that the third resource exists, it is necessary to ensure that there is at least one of the first time domain symbols in the time domain symbols corresponding to the second resource, so that the resource corresponding to the first time domain symbol can be determined to be the third resource, and then the NR PDCCH DMRS can be sent on the third resource.

[0135] In one embodiment, the method further comprises:

[0136] Instructing the terminal through radio resource control layer signaling whether to send the NR PDCCH DMRS only on time domain symbols corresponding to the second resource that are different from the time domain symbols corresponding to the first resource;

[0137] Among them, if NR PDCCH DMRS is sent only on a time domain symbol different from the time domain symbol corresponding to the first resource in the time domain symbol corresponding to the second resource, it is determined that the resource corresponding to the first time domain symbol is the third resource.

[0138] The network side device can instruct the terminal through RRC signaling whether to send NR PDCCH DMRS only on the time domain symbols corresponding to the second resource that are different from the time domain symbols corresponding to the first resource. When it is indicated that NR PDCCH DMRS is sent only on the time domain symbols corresponding to the second resource that are different from the time domain symbols corresponding to the first resource, it can be determined that the resource corresponding to the first time domain symbol is the third resource. When there is no indication that NR PDCCH DMRS is sent only on the time domain symbols corresponding to the second resource that are different from the time domain symbols corresponding to the first resource, the third resource can be determined according to the method of determining the third resource in other embodiments described above.

[0139] Fig.14 It is a schematic flow chart of a physical downlink control channel receiving method according to an embodiment of the present disclosure. The physical downlink control channel receiving method shown in this embodiment can be executed by a terminal, and the terminal can communicate with a network side device. The terminal includes but is not limited to a mobile phone, a tablet computer, a wearable device, a sensor, an Internet of Things device and other communication devices, and the base station 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.

[0140] like Fig.14 As shown, the physical downlink control channel receiving method may include the following steps:

[0141] In step S1401, a first resource occupied by a long term evolution cell-specific reference signal LTE CRS and a second resource occupied by new radio interface physical downlink control channel NR PDCCH related information to be sent are determined;

[0142] In step S1402, it is determined that at least one resource element RE in the second resource conflicts with the first resource;

[0143] In step S1403, a third resource obtained after adjusting the second resource is determined, and the third resource does not conflict with the first resource;

[0144] In step S1404, the NR PDCCH related information sent by the network side device is received on the third resource.

[0145] In the related technology, since the first resource occupied by the LTE CRS has been determined, it is difficult for the NR network side device to change the first resource. When it is determined that at least one RE in the second resource occupied by the NR PDCCH-related information conflicts with the first resource, for example, at least one RE in the second resource overlaps with at least one RE in the first resource, the terminal will not receive the NR PDCCH-related information containing the overlapping RE; accordingly, the NR network side device will not send the NR PDCCH-related information containing the overlapping RE.

[0146] In one embodiment, the NR PDCCH related information includes at least one of the following:

[0147] NR PDCCH demodulation reference signal NR PDCCH DMRS;

[0148] Downlink control information DCI carried by NR PDCCH.

[0149] In the case where the NR PDCCH-related information includes the DCI, the terminal in the related technology does not expect to receive the PDCCH candidate including the overlapping RE; accordingly, the NR network side device will not send the PDCCHcandidate including the overlapping RE.

[0150] Since the PDCCH candidate does not only include individual REs, but includes at least one CCE, and one CCE includes a large number of REs. The NR network side device does not send the PDCCH candidate including the overlapping RE, which means that the PDCCH candidate that the NR network side device originally needs to send, if it includes the overlapping RE, then the entire PDCCH candidate will not be sent, which results in no DCI being sent on the CCEs included in the PDCCH candidate (where there may be REs that do not conflict with the first resource), then there will be a large number of CEs (such as REs that do not conflict with the first resource) that are not used, which seriously restricts the transmission performance and scheduling flexibility of the NRPDCCH.

[0151] According to an embodiment of the present disclosure, when it is determined that at least one resource element RE in the second resource conflicts with the first resource, the network side device does not directly abandon sending the NR PDCCH related information containing the conflicting RE, but can adjust the second resource and obtain the third resource. Correspondingly, the terminal can determine the third resource obtained after adjusting the second resource, and then receive the NR PDCCH related information sent by the network side device on the third resource. Since the obtained third resource does not conflict with the first resource, while ensuring that the RE in the resource corresponding to the NR PDCCH related information does not conflict with the first resource, the impact of LTE CRS on the NR PDCCH related information is reduced, and a large number of REs that do not conflict with the first resource are avoided from being abandoned, which is conducive to improving transmission performance and scheduling flexibility.

[0152] It should be noted that the way in which the network side device adjusts the second resource to obtain the third resource can be indicated by the network side device to the terminal, for example, through system information, paging signaling, etc.; it can also be determined based on a protocol agreement, and the terminal can also determine the way in which the network side device adjusts the second resource to obtain the third resource based on the protocol agreement.

[0153] For example, for the terminal, when at least one resource element RE in the second resource conflicts with the first resource, a third resource obtained after adjusting the second resource can be determined, and then the NR PDCCH related information sent by the network side device is received on the third resource. As for how to adjust the second resource to obtain the third resource, the terminal can determine it according to the instruction of the network side device or according to the protocol agreement.

[0154] Regarding NR PDCCH related information, the embodiments of the present disclosure are mainly exemplified by NR PDCCH DMRS and DCI. In practical applications, the embodiments of the present disclosure can also be applied to other NR PDCCH related information as needed. The following first uses several embodiments to illustrate the case where the NR PDCCH related information includes the DCI.

[0155] Fig.15 FIG. 1 is a schematic flow chart of another method for receiving a physical downlink control channel according to an embodiment of the present disclosure. Fig.15 As shown, in a case where the NR PDCCH related information includes the DCI, the determining of the third resource obtained after adjusting the second resource includes:

[0156] In step S1501, the second resource is punctured according to the first resource.

[0157] In one embodiment, the network side device may puncture the second resource according to the first resource, for example, removing the REs in the second resource that conflict with the first resource by puncturing, and the remaining resources may be used as the third resource. Then for the network side device, it is equivalent to sending DCI on the REs in the second resource that do not conflict with the first resource. The operation process is relatively simple and easy to implement.

[0158] Since the network side device performs a sending operation, and the terminal performs a receiving operation, when the network side device punches the second resource according to the first resource, the specific operation of the terminal punching the second resource according to the first resource may be different from the specific operation of the network side device. For example, the terminal punches the second resource according to the first resource, which means that when the terminal receives DCI, it does not consider the existence of LTE CRS and still receives DCI on the second resource.

[0159] Fig.16 FIG. 1 is a schematic flow chart of another method for receiving a physical downlink control channel according to an embodiment of the present disclosure. Fig.16 As shown, in a case where the NR PDCCH related information includes the DCI, the determining of the third resource obtained after adjusting the second resource includes:

[0160] In step S1601, rate matching is performed on the second resource according to the first resource.

[0161] In one embodiment, the network side device can perform rate matching on the second resource according to the first resource, for example, determine the RE in the second resource that does not conflict with the first resource as the third resource, and then send DCI on the third resource. Correspondingly, the terminal can perform rate matching on the second resource according to the first resource, determine the RE in the second resource that does not conflict with the first resource as the third resource, and then receive DCI on the third resource.

[0162] The following uses several embodiments to illustrate the case where NR PDCCH related information includes NR PDCCH DMRS.

[0163] It should be noted that the DCI in the above embodiment is the information carried by the NR PDCCH, and the NR PDCCH DMRS is not the information carried by the NR PDCCH, but the information used to demodulate the NR PDCCH. However, in some cases, the NR PDCCH DMRS will also be set in the control resource set CORESET where the NR PDCCH is located and sent, so both the RE corresponding to the NR PDCCH DMRS and the RE corresponding to the DCI may conflict with the first resource.

[0164] Although when sending DCI, even if the RE corresponding to the DCI conflicts with the first resource, the DCI can be sent by puncturing or rate matching, when the RE corresponding to the NR PDCCH DMRS conflicts with the first resource, it is generally not possible to send the NR PDCCH DMRS by puncturing or rate matching, but it is necessary to consider other methods to determine the third resource.

[0165] Fig.17 FIG. 1 is a schematic flow chart of another method for receiving a physical downlink control channel according to an embodiment of the present disclosure. Fig.17 As shown, in a case where the NR PDCCH related information includes the NR PDCCH DMRS, the determining of the third resource obtained after adjusting the second resource includes:

[0166] In step S1701, the third resource obtained by changing the frequency domain position of the RE in the second resource that conflicts with the first resource (specifically changing the frequency domain position of the conflicting RE carrying the NR PDCCH DMRS) is determined.

[0167] In one embodiment, for the RE in the second resource that conflicts with the first resource, the terminal can determine how the network side device changes the frequency domain position, such as moving to a high frequency or to a low frequency, and the moving distance can be one or more REs. The specific manner of changing the frequency domain position can be determined according to the network side device indication, or can be determined based on the protocol agreement. Then the terminal can determine the third resource obtained after changing the frequency domain position of the RE in the second resource that conflicts with the first resource.

[0168] Accordingly, on the basis that the RE corresponding to the NR PDCCH DMRS does not conflict with the RE corresponding to the LTE CRS, it can be ensured that the number of NR PDCCH DMRS carried on each REG remains unchanged, which is conducive to ensuring the performance of NR PDCCH demodulation based on NR PDCCH DMRS.

[0169] Fig.18 FIG. 1 is a schematic flow chart of another method for receiving a physical downlink control channel according to an embodiment of the present disclosure. Fig.18 As shown, in a case where the NR PDCCH related information includes the NR PDCCH DMRS, the determining of the third resource obtained after adjusting the second resource includes:

[0170] In step S1801, determining a time domain symbol corresponding to the first resource in a control resource set CORESET where the NR PDCCH is located;

[0171] In step S1802, determining a first RE that is not used to send the LTE CRS among the REs corresponding to the time domain symbol;

[0172] In step S1803, a resource element group REG is determined in the first RE, and a pattern of the NR PDCCH DMRS in the REG is determined;

[0173] In step S1804, the NR PDCCH DMRS is determined in the REG according to the pattern.

[0174] In one embodiment, when the NR PDCCH related information includes the NR PDCCH DMRS, that is, there is a conflict between the RE corresponding to the NR PDCCH DMRS and the RE corresponding to the LTE CRS, the time domain symbol corresponding to the first resource can be determined in the CORESET where the NR PDCCH is located, and the NR PDCCH DMRS is also in the CORESET. Then, in the RE corresponding to the time domain symbol, the first RE that is not used to send the LTE CRS is determined, and then the REG is determined in the first RE, and the pattern of the NR PDCCH DMRS in the REG is determined, and finally the NR PDCCH DMRS is determined in the REG according to the pattern.

[0175] Since the LTE CRS no longer exists in the first RE, the mapped REG is determined in the first RE, and there will be no conflict between the RE mapped to the REG and the RE corresponding to the LTE CRS. Then, according to the pattern of the NR PDCCH DMRS in the REG, the NR PDCCH DMRS is mapped to the REG, so there is no conflict between the RE corresponding to the NR PDCCH DMRS and the RE corresponding to the LTE CRS. Therefore, the terminal determines that there is no conflict between the RE corresponding to the NR PDCCH DMRS and the RE corresponding to the LTE CRS in the REG according to the pattern.

[0176] Accordingly, on the basis that the RE corresponding to the NR PDCCH DMRS does not conflict with the RE corresponding to the LTE CRS, the number of NR PDCCH DMRS carried on each REG is ensured to remain unchanged, which is conducive to ensuring the performance of NR PDCCH demodulation based on NR PDCCH DMRS.

[0177] In one embodiment, the REG structure is a newly defined structure, or is a structure of an existing REG.

[0178] The structure of the REG mapped in the first RE may be the structure of an existing REG, for example, one REG corresponds to one symbol in the time domain and corresponds to 12 REs in the frequency domain; the structure of the REG mapped in the first RE may also be a newly defined structure, for example, one REG corresponds to one symbol in the time domain and corresponds to 18 REs in the frequency domain.

[0179] In one embodiment, the pattern is a newly defined pattern or an existing pattern.

[0180] In the REG mapped to the first RE, the pattern of the NR PDCCH DMRS can be an existing pattern, for example, the REs corresponding to the NR PDCCH DMRS in the REG are RE#1, RE#5 and RE#9; it can also be a defined pattern, which can be set as needed.

[0181] It should be noted that regarding the REG structure and the pattern of the NR PDCCH DMRS, the terminal can determine it according to the instructions of the network side equipment or based on the protocol agreement.

[0182] In one embodiment, after mapping the REG in the first RE, if there are remaining REs that are insufficient to map the entire REG, the method further includes:

[0183] The NR PDCCH DMRS is not expected to be received in the remaining REs; or,

[0184] In the remaining REs, the NR PDCCH DMRS is received according to the existing pattern of the NR PDCCH DMRS in the existing REG structure.

[0185] In some cases, the number of the first REs can be divided by the number of REs in the REG, so when mapping REGs in the first RE, an integer number of REGs can be mapped, for example Fig. 9 In the illustrated embodiment, the number of REs in the REG is 12, and the number of first REs is 24.

[0186] However, in some cases, the number of first REs cannot divide the number of REs in REG, for example, Fig. 9 Based on the shown embodiment, there is also 1 RB, in which the pattern of LTE CRS is the same as that of the other 3 RBs, so the number of first REs is 32. When the number of REs in REG is 12, after mapping 2 REGs on the first RE, there will be 8 first REs left, which are not enough to map the complete REG.

[0187] In this case, in these remaining REs, the terminal may not expect to receive the NR PDCCH DMRS; or in these remaining REs, the NR PDCCH DMRS may be received according to the existing pattern of the NR PDCCH DMRS in the existing REG structure, for example, NR PDCCH DMRS is received according to RE#1, RE#5 and RE#9. Since REG is not mapped on the remaining REs in this case, REG still contains REs corresponding to LTE CRS. Therefore, LTE CRS exists on RE#9, then NR PDCCH DMRS can only be mapped on RE#1 and RE#5 among the remaining 8 REs. Therefore, among these remaining 8 REs, NR PDCCH DMRS can only be determined on RE#1 and RE#5.

[0188] Fig.19 FIG. 1 is a schematic flow chart of another method for receiving a physical downlink control channel according to an embodiment of the present disclosure. Fig.19 As shown, in a case where the NR PDCCH related information includes the NR PDCCH DMRS, the determining of the third resource obtained after adjusting the second resource includes:

[0189] In step S1901, a CORESET is determined after adjusting the time domain symbol corresponding to the CORESET where the NR PDCCH is located, wherein the time domain symbol corresponding to the adjusted CORESET is different from the time domain symbol corresponding to the first resource.

[0190] In one embodiment, for the RE in the second resource that conflicts with the first resource, the network side device can change the time domain position, for example, move backward in the time domain, and the moving distance can be one or more time domain symbols. The specific method of changing the time domain position can be determined according to the network side device indication, or can be determined based on the protocol agreement. Then the terminal can determine the CORESET after adjusting the time domain symbol corresponding to the CORESET where the NR PDCCH is located. The time domain symbol corresponding to the adjusted CORESET is different from the time domain symbol corresponding to the first resource, and the adjusted CORESET can be used as the third resource.

[0191] Since the time domain symbol corresponding to the adjusted CORESET is different from the time domain symbol corresponding to the first resource, based on the fact that the RE corresponding to the NR PDCCH DMRS does not conflict with the RE corresponding to the LTE CRS, it can be ensured that the number of NR PDCCH DMRS carried on each REG remains unchanged, which is beneficial to ensuring the performance of NR PDCCH demodulation based on NR PDCCH DMRS.

[0192] In one embodiment, the time domain symbol corresponding to the adjusted CORESET is a continuous time domain symbol, or a discrete time domain symbol.

[0193] Based on the difference between LTE CRS and CORESET duration, the time domain symbol corresponding to the adjusted CORESET can be a continuous time domain symbol or a discrete time domain symbol. Fig.11 As shown, the time domain symbol corresponding to the adjusted CORESET is a discrete time domain symbol; and when the CORESET duration is 2 time domain symbols, the time domain symbol corresponding to the CORESET can be adjusted to the third symbol and the fourth symbol, so that the time domain symbol corresponding to the adjusted CORESET is a continuous time domain symbol.

[0194] In one embodiment, determining the CORESET after adjusting the time domain symbol corresponding to the CORESET where the NR PDCCH is located includes:

[0195] Determine a CORESET after adjusting the time domain symbol corresponding to the CORESET where the NR PDCCH is located according to a specified method, wherein the network side device and the terminal pre-store the specified method.

[0196] The network side device can adjust the time domain symbol corresponding to the CORESET where the NR PDCCH is located according to the specified method, and the terminal can determine the CORESET after adjusting the time domain symbol corresponding to the CORESET where the NR PDCCH is located according to the specified method. In this case, the network side device and the terminal can pre-store the specified method to ensure that the terminal can also determine the time domain symbol corresponding to the adjusted CORESET according to the specified method after receiving the PDCCH.

[0197] In one embodiment, the method further comprises:

[0198] The time domain symbol corresponding to the adjusted CORESET is indicated to the terminal through radio access control layer signaling.

[0199] The terminal is indicated the time domain symbol corresponding to the adjusted CORESET through radio access control layer (RRC, Radio Resource Control) signaling.

[0200] In addition to adjusting the time domain symbols corresponding to CORESET according to a pre-stored specified method, the network side device also adjusts the time domain symbols corresponding to CORESET as needed, and can indicate to the terminal through RRC signaling (for example, through a codebook bitmap indication) the adjusted time domain symbols corresponding to the CORESET, so that the terminal can determine how to adjust the time domain symbols corresponding to the CORESET according to the RRC signaling, and further determine the time domain symbols corresponding to the adjusted CORESET.

[0201] Fig. 20 FIG. 1 is a schematic flow chart of another method for receiving a physical downlink control channel according to an embodiment of the present disclosure. Fig. 20 As shown, in a case where the NR PDCCH related information includes the NR PDCCH DMRS, the determining of the third resource obtained after adjusting the second resource includes:

[0202] In step S2001, a first time domain symbol different from the time domain symbol corresponding to the first resource is determined in the time domain symbols corresponding to the second resource, and the resource corresponding to the first time domain symbol is determined to be the third resource.

[0203] In one embodiment, the network side device can determine a first time domain symbol different from the time domain symbol corresponding to the first resource in the time domain symbol corresponding to the second resource, and then determine that the resource corresponding to the first time domain symbol is the third resource, which is equivalent to sending NR PDCCHDMRS only on the time domain symbols in the second resource that do not conflict with the first resource.

[0204] Accordingly, on the basis that the RE corresponding to the NR PDCCH DMRS does not conflict with the RE corresponding to the LTE CRS, it can be ensured that the number of NR PDCCH DMRS carried on each REG remains unchanged, which is conducive to ensuring the performance of NR PDCCH demodulation based on NR PDCCH DMRS.

[0205] In one embodiment, there is at least one of the first time domain symbols in the time domain symbols corresponding to the second resource. There is at least one of the first time domain symbols in the time domain symbols corresponding to the second resource. In order to ensure that the third resource exists, it is necessary to ensure that there is at least one of the first time domain symbols in the time domain symbols corresponding to the second resource, so that the resource corresponding to the first time domain symbol can be determined to be the third resource, and then the NR PDCCH DMRS can be sent on the third resource.

[0206] In one embodiment, the method further comprises:

[0207] Determine, according to the radio resource control layer signaling sent by the network side device, whether to send the NR PDCCH DMRS only on the time domain symbols corresponding to the second resource that are different from the time domain symbols corresponding to the first resource;

[0208] Among them, if NR PDCCH DMRS is sent only on a time domain symbol different from the time domain symbol corresponding to the first resource in the time domain symbol corresponding to the second resource, it is determined that the resource corresponding to the first time domain symbol is the third resource.

[0209] The terminal can determine, based on the RRC signaling sent by the network side device, whether to send NR PDCCH DMRS only on the time domain symbols corresponding to the second resource that are different from the time domain symbols corresponding to the first resource. When it is determined that NR PDCCH DMRS is sent only on the time domain symbols corresponding to the second resource that are different from the time domain symbols corresponding to the first resource, then it can be determined that the resource corresponding to the first time domain symbol is the third resource. When it is determined that NR PDCCH DMRS is not sent only on the time domain symbols corresponding to the second resource that are different from the time domain symbols corresponding to the first resource, then the third resource can be determined according to the method of determining the third resource in other embodiments described above.

[0210] Corresponding to the aforementioned embodiments of the method for sending a physical downlink control channel and the method for receiving a physical downlink control channel, the present disclosure further provides embodiments of a device for sending a physical downlink control channel and a device for receiving a physical downlink control channel.

[0211] Fig.21 It is a schematic block diagram of a physical downlink control channel sending device according to an embodiment of the present disclosure. The physical downlink control channel sending device shown in this embodiment can be applicable to a network side device, and the network side device can communicate with a terminal, and the terminal includes but is not limited to a mobile phone, a tablet computer, a wearable device, a sensor, an Internet of Things device and other communication devices, and the network side device includes but is not limited to a network side device in a 4G, 5G, 6G and other communication systems, such as a base station, a core network, etc.

[0212] like Fig.21 As shown, the physical downlink control channel sending device may include:

[0213] The processing module 2101 is configured to determine a first resource occupied by a long term evolution cell-specific reference signal LTE CRS and a second resource occupied by new radio interface physical downlink control channel NR PDCCH related information to be sent; and determine that at least one resource element RE in the second resource conflicts with the first resource; adjust the second resource and obtain a third resource, wherein the third resource does not conflict with the first resource;

[0214] The sending module 2102 is configured to send the NR PDCCH related information to the terminal on the third resource.

[0215] In one embodiment, the NR PDCCH related information includes at least one of the following:

[0216] NR PDCCH demodulation reference signal NR PDCCH DMRS;

[0217] Downlink control information DCI carried by NR PDCCH.

[0218] In one embodiment, when the NR PDCCH related information includes the DCI, the processing module is configured to puncture the second resource according to the first resource.

[0219] In one embodiment, when the NR PDCCH related information includes the DCI, the processing module is configured to rate match the second resource according to the first resource.

[0220] In one embodiment, when the NR PDCCH related information includes the NR PDCCH DMRS, the processing module is configured to change the frequency domain position of the RE in the second resource that conflicts with the first resource to obtain the third resource.

[0221] In one embodiment, when the NR PDCCH related information includes the NR PDCCH DMRS, the processing module is configured to determine a time domain symbol corresponding to the first resource in a control resource set CORESET where the NR PDCCH is located;

[0222] Determine, among the REs corresponding to the time domain symbol, a first RE that is not used for sending the LTE CRS;

[0223] Mapping a resource element group REG in the first RE, and determining a pattern of the NR PDCCH DMRS in the REG;

[0224] The NR PDCCH DMRS is mapped in the REG according to the pattern.

[0225] In one embodiment, the REG structure is a newly defined structure, or is a structure of an existing REG.

[0226] In one embodiment, the pattern is a newly defined pattern or an existing pattern.

[0227] In one embodiment, after mapping the REG in the first RE, if there are remaining REs that are insufficient to map the entire REG, the processing module is also configured not to map the NR PDCCH DMRS in the remaining REs; or, in the remaining REs, map the NRPDCCH DMRS according to the existing pattern of the NR PDCCH DMRS in the existing REG structure.

[0228] In one embodiment, when the NR PDCCH related information includes the NR PDCCH DMRS, the processing module is configured to adjust the time domain symbol corresponding to the CORESET where the NR PDCCH is located, wherein the adjusted time domain symbol corresponding to the CORESET is different from the time domain symbol corresponding to the first resource.

[0229] In one embodiment, the time domain symbol corresponding to the adjusted CORESET is a continuous time domain symbol, or a discrete time domain symbol.

[0230] In one embodiment, the processing module is configured to adjust the time domain symbol corresponding to the CORESET where the NR PDCCH is located according to a specified method, wherein the network side device and the terminal pre-store the specified method.

[0231] In one embodiment, the sending module is further configured to indicate to the terminal, through radio access control layer signaling, the time domain symbol corresponding to the adjusted CORESET.

[0232] In one embodiment, when the NR PDCCH related information includes the NR PDCCH DMRS, the processing module is configured to determine a first time domain symbol different from the time domain symbol corresponding to the first resource in the time domain symbol corresponding to the second resource, and determine that the resource corresponding to the first time domain symbol is the third resource.

[0233] In an embodiment, there is at least one first time domain symbol in the time domain symbols corresponding to the second resource.

[0234] In one embodiment, the sending module is further configured to instruct the terminal through radio resource control layer signaling whether to send the NR PDCCH DMRS only on a time domain symbol that is different from the time domain symbol corresponding to the first resource in the time domain symbol corresponding to the second resource;

[0235] Among them, if NR PDCCH DMRS is sent only on a time domain symbol different from the time domain symbol corresponding to the first resource in the time domain symbol corresponding to the second resource, it is determined that the resource corresponding to the first time domain symbol is the third resource.

[0236] Fig. 22 It is a schematic block diagram of a physical downlink control channel receiving device according to an embodiment of the present disclosure. The physical downlink control channel receiving device shown in this embodiment can be applicable to a terminal, and the terminal can communicate with a network side device. The terminal includes but is not limited to a mobile phone, a tablet computer, a wearable device, a sensor, an Internet of Things device and other communication devices, and the base station 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.

[0237] like Fig. 22 As shown, the physical downlink control channel receiving device may include:

[0238] The processing module 2201 is configured to determine a first resource occupied by a long term evolution cell-specific reference signal LTE CRS and a second resource occupied by new radio interface physical downlink control channel NR PDCCH related information to be sent; and determine that at least one resource element RE in the second resource conflicts with the first resource; determine a third resource obtained after adjusting the second resource, and the third resource does not conflict with the first resource;

[0239] The receiving module 2202 is configured to receive the NRPDCCH related information sent by the network side device on the third resource.

[0240] In one embodiment, the NR PDCCH related information includes at least one of the following:

[0241] NR PDCCH demodulation reference signal NR PDCCH DMRS;

[0242] Downlink control information DCI carried by NR PDCCH.

[0243] In one embodiment, when the NR PDCCH related information includes the DCI, the processing module is configured to puncture the second resource according to the first resource.

[0244] In one embodiment, when the NR PDCCH related information includes the DCI, the processing module is configured to rate match the second resource according to the first resource.

[0245] In one embodiment, when the NR PDCCH related information includes the NR PDCCH DMRS, the processing module is configured to determine the third resource obtained after changing the frequency domain position of the RE in the second resource that conflicts with the first resource.

[0246] In one embodiment, when the NR PDCCH related information includes the NR PDCCH DMRS, the processing module is configured to determine a time domain symbol corresponding to the first resource in a control resource set CORESET where the NR PDCCH is located;

[0247] Determine, among the REs corresponding to the time domain symbol, a first RE that is not used for sending the LTE CRS;

[0248] Determine a resource element group REG in the first RE, and determine a pattern of the NR PDCCH DMRS in the REG;

[0249] The NR PDCCH DMRS is determined in the REG according to the pattern.

[0250] In one embodiment, the REG structure is a newly defined structure, or is a structure of an existing REG.

[0251] In one embodiment, the pattern is a newly defined pattern or an existing pattern.

[0252] In one embodiment, after mapping the REG in the first RE, if there are remaining REs that are insufficient to map the entire REG, the receiving module is also configured to not expect to receive the NR PDCCH DMRS in the remaining REs; or, in the remaining REs, receive the NRPDCCH DMRS according to the existing pattern of the NR PDCCH DMRS in the existing REG structure.

[0253] In one embodiment, when the NR PDCCH related information includes the NR PDCCH DMRS, the processing module is configured to determine the CORESET after adjusting the time domain symbol corresponding to the CORESET where the NR PDCCH is located, wherein the time domain symbol corresponding to the adjusted CORESET is different from the time domain symbol corresponding to the first resource.

[0254] In one embodiment, the time domain symbol corresponding to the adjusted CORESET is a continuous time domain symbol, or a discrete time domain symbol.

[0255] In one embodiment, the processing module is configured to determine a CORESET after adjusting the time domain symbol corresponding to the CORESET where the NR PDCCH is located according to a specified method, wherein the network side device and the terminal pre-store the specified method.

[0256] In one embodiment, the processing module is further configured to determine the time domain symbol corresponding to the adjusted CORESET according to the radio access control layer signaling sent by the network side device.

[0257] In one embodiment, when the NR PDCCH related information includes the NR PDCCH DMRS, the processing module is configured to determine a first time domain symbol different from the time domain symbol corresponding to the first resource in the time domain symbol corresponding to the second resource, and determine that the resource corresponding to the first time domain symbol is the third resource.

[0258] In an embodiment, there is at least one first time domain symbol in the time domain symbols corresponding to the second resource.

[0259] In one embodiment, the processing module is further configured to determine, according to the radio resource control layer signaling sent by the network side device, whether to send the NR PDCCH DMRS only on a time domain symbol that is different from the time domain symbol corresponding to the first resource in the time domain symbol corresponding to the second resource;

[0260] Among them, if NR PDCCH DMRS is sent only on a time domain symbol different from the time domain symbol corresponding to the first resource in the time domain symbol corresponding to the second resource, it is determined that the resource corresponding to the first time domain symbol is the third resource.

[0261] Regarding the device in the above embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment of the relevant method, and will not be elaborated here.

[0262] For the device embodiment, since it basically corresponds to the method embodiment, the relevant parts refer to the partial description of the method embodiment. The device embodiment described above is only schematic, wherein the modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules, that is, they may be located in one place, or they may be distributed on multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative work.

[0263] An embodiment of the present disclosure further proposes a communication device, comprising: a processor; and a memory for storing a computer program; wherein, when the computer program is executed by the processor, the physical downlink control channel sending method described in any of the above embodiments is implemented.

[0264] An embodiment of the present disclosure further proposes a communication device, comprising: a processor; and a memory for storing a computer program; wherein, when the computer program is executed by the processor, the physical downlink control channel receiving method described in any of the above embodiments is implemented.

[0265] An embodiment of the present disclosure further proposes a computer-readable storage medium for storing a computer program. When the computer program is executed by a processor, the steps in the physical downlink control channel sending method described in any of the above embodiments are implemented.

[0266] An embodiment of the present disclosure further proposes a computer-readable storage medium for storing a computer program. When the computer program is executed by a processor, the steps in the physical downlink control channel receiving method described in any of the above embodiments are implemented.

[0267] like Fig.23 As shown, Fig.23 2 is a schematic block diagram of an apparatus 2300 for transmitting a physical downlink control channel according to an embodiment of the present disclosure. The apparatus 2300 may be provided as a base station. Fig.23 The apparatus 2300 includes a processing component 2322, a wireless transmission / reception component 2324, an antenna component 2326, and a signal processing part specific to a wireless interface. The processing component 2322 may further include one or more processors. One of the processors in the processing component 2322 may be configured to implement the physical downlink control channel transmission method described in any of the above embodiments.

[0268] Fig.24 2 is a schematic block diagram of an apparatus 2400 for receiving a physical downlink control channel according to an embodiment of the present disclosure. For example, the apparatus 2400 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0269] Reference Fig.24 , the device 2400 may include one or more of the following components: a processing component 2402 , a memory 2404 , a power component 2406 , a multimedia component 2408 , an audio component 2410 , an input / output (I / O) interface 2412 , a sensor component 2414 , and a communication component 2416 .

[0270] The processing component 2402 generally controls the overall operation of the device 2400, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 2402 may include one or more processors 2420 to execute instructions to complete all or part of the steps of the physical downlink control channel reception method described above. In addition, the processing component 2402 may include one or more modules to facilitate interaction between the processing component 2402 and other components. For example, the processing component 2402 may include a multimedia module to facilitate interaction between the multimedia component 2408 and the processing component 2402.

[0271] The memory 2404 is configured to store various types of data to support operations on the device 2400. Examples of such data include instructions for any application or method operating on the device 2400, contact data, phone book data, messages, pictures, videos, etc. The memory 2404 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, 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.

[0272] The power supply component 2406 provides power to the various components of the device 2400. The power supply component 2406 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the device 2400.

[0273] The multimedia component 2408 includes a screen that provides an output interface between the device 2400 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 2408 includes a front camera and / or a rear camera. When the device 2400 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera may receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

[0274] The audio component 2410 is configured to output and / or input audio signals. For example, the audio component 2410 includes a microphone (MIC), and when the device 2400 is in an operating mode, such as a call mode, a recording mode, and a speech recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 2404 or sent via the communication component 2416. In some embodiments, the audio component 2410 also includes a speaker for outputting audio signals.

[0275] I / O interface 2412 provides an interface between processing component 2402 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, start buttons, and lock buttons.

[0276] The sensor assembly 2414 includes one or more sensors for providing various aspects of status assessment for the device 2400. For example, the sensor assembly 2414 can detect the open / closed state of the device 2400, the relative positioning of components, such as the display and keypad of the device 2400, the sensor assembly 2414 can also detect the position change of the device 2400 or a component of the device 2400, the presence or absence of user contact with the device 2400, the orientation or acceleration / deceleration of the device 2400, and the temperature change of the device 2400. The sensor assembly 2414 can include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 2414 can also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 2414 can also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0277] The communication component 2416 is configured to facilitate wired or wireless communication between the device 2400 and other devices. The device 2400 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 2416 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 2416 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0278] In an exemplary embodiment, the device 2400 can 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 perform the above-mentioned physical downlink control channel reception method.

[0279] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 2404 including instructions, and the instructions can be executed by the processor 2420 of the device 2400 to complete the above-mentioned physical downlink control channel receiving method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0280] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the disclosure disclosed herein. The present disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The description and examples are to be considered exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0281] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

[0282] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprises a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0283] The method and device provided in the embodiments of the present disclosure are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present disclosure. The description of the above embodiments is only used to help understand the method of the present disclosure and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present disclosure, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present disclosure.

Claims

1. A method for sending a physical downlink control channel, characterized in that: The method is performed by a network side device and includes: Determine a first resource occupied by a long term evolution cell-specific reference signal LTE CRS and a second resource occupied by new radio interface physical downlink control channel NR PDCCH related information to be sent; Determine that at least one resource element RE in the second resource conflicts with the first resource; adjusting the second resource and obtaining a third resource, where the third resource does not conflict with the first resource; Sending the NR PDCCH related information to the terminal on the third resource; The NR PDCCH related information includes downlink control information DCI carried by the NR PDCCH; In a case where the NR PDCCH related information includes the DCI, the adjusting the second resource and obtaining the third resource includes one of the following: Punch a second resource occupied by the DCI carried by the NR PDCCH according to the first resource; Rate matching is performed on the second resources occupied by the DCI carried by the NR PDCCH according to the first resources.

2. The method according to claim 1, characterized in that The NR PDCCH related information also includes a demodulation reference signal NR PDCCH DMRS of the NR PDCCH. In a case where the NR PDCCH related information also includes the NR PDCCH DMRS, adjusting the second resource and obtaining the third resource further includes: Change the frequency domain position of the RE in the second resource occupied by the NR PDCCH DMRS that conflicts with the first resource to obtain the resources occupied by the NR PDCCH DMRS.

3. The method according to claim 1, characterized in that The NR PDCCH related information also includes a demodulation reference signal NR PDCCH DMRS of the NR PDCCH. In a case where the NR PDCCH related information also includes the NR PDCCH DMRS, adjusting the second resource and obtaining the third resource further includes: Determine a time domain symbol corresponding to the first resource in a control resource set CORESET where the NR PDCCH is located; Determine, among the REs corresponding to the time domain symbol, a first RE that is not used for sending the LTE CRS; Mapping a resource element group REG in the first RE, and determining a pattern of the NR PDCCH DMRS in the REG; The NR PDCCH DMRS is mapped in the REG according to the pattern.

4. The method according to claim 3, characterized in that After mapping the REG in the first RE, if there are remaining REs that are insufficient to map the entire REG, the method further includes: The NR PDCCH DMRS is not mapped in the remaining REs; or, In the remaining REs, the NR PDCCH DMRS is mapped according to the existing pattern of the NR PDCCH DMRS in the existing REG structure.

5. The method according to claim 1, characterized in that: The NR PDCCH related information also includes a demodulation reference signal NR PDCCH DMRS of the NR PDCCH. In a case where the NR PDCCH related information also includes the NR PDCCH DMRS, adjusting the second resource and obtaining the third resource further includes: Determine a first time domain symbol different from the time domain symbol corresponding to the first resource in the time domain symbol corresponding to the second resource occupied by the NR PDCCH DMRS, and determine that the resource corresponding to the first time domain symbol is the resource occupied by the NR PDCCH DMRS.

6. The method according to claim 5, characterized in that There is at least one first time domain symbol in the time domain symbols corresponding to the second resource.

7. The method according to claim 5, characterized in that The method further comprises: Instructing the terminal through radio resource control layer signaling whether to send the NR PDCCH DMRS only on time domain symbols corresponding to the second resource that are different from the time domain symbols corresponding to the first resource; Among them, if NR PDCCH DMRS is sent only on a time domain symbol different from the time domain symbol corresponding to the first resource in the time domain symbol corresponding to the second resource, then the resource corresponding to the first time domain symbol is determined to be the resource occupied by the NR PDCCH DMRS.

8. A physical downlink control channel receiving method, characterized in that: Executed by a terminal, the method includes: Determine a first resource occupied by a long term evolution cell-specific reference signal LTE CRS and a second resource occupied by new radio interface physical downlink control channel NR PDCCH related information to be sent; Determine that at least one resource element RE in the second resource conflicts with the first resource; Determine a third resource obtained after adjusting the second resource, where the third resource does not conflict with the first resource; Receiving, on the third resource, the NR PDCCH related information sent by the network side device; The NR PDCCH related information includes downlink control information DCI carried by the NR PDCCH; In a case where the NR PDCCH related information includes the DCI, the determining of the third resource obtained after adjusting the second resource includes one of the following: Punch a second resource occupied by the DCI carried by the NR PDCCH according to the first resource; Rate matching is performed on the second resources occupied by the DCI carried by the NR PDCCH according to the first resources.

9. The method according to claim 8, characterized in that The NR PDCCH related information also includes a demodulation reference signal NR PDCCH DMRS of the NR PDCCH. In a case where the NR PDCCH related information also includes the NR PDCCH DMRS, the determining of the third resource obtained after adjusting the second resource also includes: Determine the resources occupied by the NR PDCCH DMRS obtained by changing the frequency domain position of the RE in the second resource occupied by the NR PDCCH DMRS that conflicts with the first resource.

10. The method according to claim 8, characterized in that The NR PDCCH related information also includes a demodulation reference signal NR PDCCH DMRS of the NR PDCCH. In a case where the NR PDCCH related information also includes the NR PDCCH DMRS, the determining of the third resource obtained after adjusting the second resource also includes: Determine a time domain symbol corresponding to the first resource in a control resource set CORESET where the NR PDCCH is located; Determine, among the REs corresponding to the time domain symbol, a first RE that is not used for sending the LTE CRS; Determine a resource element group REG in the first RE, and determine a pattern of the NR PDCCH DMRS in the REG; The NR PDCCH DMRS is determined in the REG according to the pattern.

11. The method according to claim 10, characterized in that After mapping the REG in the first RE, if there are remaining REs that are insufficient to map the entire REG, the method further includes: The NR PDCCH DMRS is not expected to be received in the remaining REs; or, In the remaining REs, the NR PDCCH DMRS is received according to the existing pattern of the NR PDCCH DMRS in the existing REG structure.

12. The method according to claim 8, characterized in that The NR PDCCH related information also includes a demodulation reference signal NR PDCCH DMRS of the NR PDCCH. In a case where the NR PDCCH related information also includes the NR PDCCH DMRS, the determining of the third resource obtained after adjusting the second resource also includes: Determine a first time domain symbol different from the time domain symbol corresponding to the first resource in the time domain symbol corresponding to the second resource occupied by the NR PDCCH DMRS, and determine that the resource corresponding to the first time domain symbol is the resource occupied by the NR PDCCH DMRS.

13. The method according to claim 12, characterized in that There is at least one first time domain symbol in the time domain symbols corresponding to the second resource.

14. The method according to claim 12, characterized in that The method further comprises: Determine, according to the radio resource control layer signaling sent by the network side device, whether to send the NR PDCCH DMRS only on the time domain symbols corresponding to the second resource that are different from the time domain symbols corresponding to the first resource; Among them, if NR PDCCH DMRS is sent only on a time domain symbol different from the time domain symbol corresponding to the first resource in the time domain symbol corresponding to the second resource, then the resource corresponding to the first time domain symbol is determined to be the resource occupied by the NR PDCCH DMRS.

15. A physical downlink control channel sending device, characterized in that: include: The processing module is configured to determine a first resource occupied by a long term evolution cell-specific reference signal LTE CRS and a second resource occupied by new radio interface physical downlink control channel NR PDCCH related information to be sent; and determine that at least one resource element RE in the second resource conflicts with the first resource; adjusting the second resource and obtaining a third resource, where the third resource does not conflict with the first resource; A sending module, configured to send the NR PDCCH related information to the terminal on the third resource; The NR PDCCH related information includes downlink control information DCI carried by the NR PDCCH; In the case where the NR PDCCH related information includes the DCI, the processing module is configured as one of the following: Punch a second resource occupied by the DCI carried by the NR PDCCH according to the first resource; Rate matching is performed on the second resources occupied by the DCI carried by the NR PDCCH according to the first resources.

16. A physical downlink control channel receiving device, characterized in that: include: The processing module is configured to determine a first resource occupied by a long term evolution cell-specific reference signal LTE CRS and a second resource occupied by relevant information of a new radio interface physical downlink control channel NR PDCCH to be sent; and determine that at least one resource element RE in the second resource conflicts with the first resource; and determine a third resource obtained after adjusting the second resource, wherein the third resource does not conflict with the first resource; A receiving module, configured to receive the NR PDCCH related information sent by the network side device on the third resource; The NR PDCCH related information includes downlink control information DCI carried by the NR PDCCH; In the case where the NR PDCCH related information includes the DCI, the processing module is configured as one of the following: Punch a second resource occupied by the DCI carried by the NR PDCCH according to the first resource; Rate matching is performed on the second resources occupied by the DCI carried by the NR PDCCH according to the first resources.

17. A communication device, characterized in that: include: processor; memory for storing computer programs; Wherein, when the computer program is executed by a processor, the physical downlink control channel sending method according to any one of claims 1 to 7 is implemented.

18. A communication device, characterized in that: include: processor; memory for storing computer programs; Wherein, when the computer program is executed by a processor, the physical downlink control channel receiving method described in any one of claims 8 to 14 is implemented.

19. A computer-readable storage medium for storing a computer program, characterized in that: When the computer program is executed by a processor, the steps in the physical downlink control channel sending method according to any one of claims 1 to 7 are implemented.

20. A computer-readable storage medium for storing a computer program, characterized in that: When the computer program is executed by a processor, the steps in the physical downlink control channel receiving method according to any one of claims 8 to 14 are implemented.

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