Physical downlink control channel receiving and sending method and device

Abstract

The present disclosure relates to a method and apparatus for receiving and sending a physical downlink control channel, wherein the physical downlink control channel receiving method comprises: determining a first resource occupied by an indicator channel in a long term evolution LTE system and a second resource occupied by a new radio physical downlink control channel NR PDCCH; in the case where the second resource conflicts with the first resource, determining a receiving mode of the NR PDCCH; and receiving the NR PDCCH according to the receiving mode. According to the present disclosure, in the case where the first resource occupied by the LTE indicator channel conflicts with the second resource occupied by the NR PDCCH, by adopting the first receiving mode or the second receiving mode to receive the NR PDCCH, the problem caused by the conflict between the first resource and the second resource can be alleviated, which is beneficial to improving the system capacity of the NR PDCCH and improving the performance of the NR system.

Description

Technical Field

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

[0002] Currently, in the DSS (Dynamic Spectrum Sharing) scenario, the LTE (Long Term Evolution) system and the NR (New Radio) system can coexist in the same spectrum, which causes some information sent by the LTE system to interfere with the NR system.

[0003] For example, when the RE (Resource Element) corresponding to the PCFICH (Physical Control Format Indicator Channel) and PHICH (Physical Hybrid ARQ Indicator Channel) sent by the LTE system conflicts with the RE corresponding to the NR PDCCH (Physical Downlink Control Channel), there will be interference when the terminal receives the NR PDCCH on the conflicting RE, thereby reducing the demodulation performance of the NR PDCCH. Summary of the invention

[0004] In view of this, the embodiments of the present disclosure propose a physical downlink control channel receiving method, a physical downlink control channel sending method, a physical downlink control channel receiving device, a physical downlink control channel sending 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 physical downlink control channel receiving method is proposed, which is applicable to a terminal, and the method includes: determining a first resource occupied by an indicator channel in a long term evolution LTE system, and a second resource occupied by a new radio interface physical downlink control channel NR PDCCH; in the case where the second resource conflicts with the first resource, determining a receiving mode of the NR PDCCH; receiving the NR PDCCH according to the receiving mode;

[0006] Among them, the receiving method includes at least one of the following: a first receiving method: receiving according to the situation that the network device performs puncturing on the NR PDCCH according to the first resource; a second receiving method: receiving according to the situation that the network device performs rate matching on the NR PDCCH according to the first resource.

[0007] According to a second aspect of an embodiment of the present disclosure, a physical downlink control channel sending method is proposed, which is applicable to a network device, the method comprising: determining a first resource occupied by an indicator channel in a long term evolution LTE system, and a second resource occupied by a new radio interface physical downlink control channel NR PDCCH; in the case where the second resource conflicts with the first resource, determining a sending mode of the NR PDCCH; sending the NR PDCCH according to the sending mode;

[0008] Among them, the sending method includes at least one of the following: a first sending method: puncturing the NR PDCCH according to the first resource; a second sending method: rate matching the NR PDCCH according to the first resource.

[0009] According to a third aspect of an embodiment of the present disclosure, a physical downlink control channel receiving device is proposed, which is applicable to a terminal, and the device includes: a processing module, configured to determine a first resource occupied by an indicator channel in a long term evolution LTE system, and a second resource occupied by a new radio interface physical downlink control channel NR PDCCH; when the second resource conflicts with the first resource, determining a receiving mode of the NR PDCCH; a receiving module, configured to receive the NR PDCCH according to the receiving mode;

[0010] Among them, the receiving method includes at least one of the following: a first receiving method: receiving according to the situation that the network device performs puncturing on the NR PDCCH according to the first resource; a second receiving method: receiving according to the situation that the network device performs rate matching on the NR PDCCH according to the first resource.

[0011] According to a fourth aspect of an embodiment of the present disclosure, a physical downlink control channel sending device is proposed, which is applicable to a network device, and the device includes: a processing module, configured to determine a first resource occupied by an indicator channel in a long term evolution LTE system, and a second resource occupied by a new radio interface physical downlink control channel NR PDCCH; when the second resource conflicts with the first resource, determining a sending mode of the NR PDCCH; a sending module, configured to send the NR PDCCH according to the sending mode;

[0012] Among them, the sending method includes at least one of the following: a first sending method: puncturing the NR PDCCH according to the first resource; a second sending method: rate matching the NR PDCCH according to the first resource.

[0013] According to a fifth 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.

[0014] According to a sixth 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.

[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 receiving 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 sending method are implemented.

[0017] According to an embodiment of the present disclosure, when the first resource occupied by the LTE indicator channel conflicts with the second resource occupied by the NR PDCCH, by adopting the first receiving mode or the second receiving mode to receive the NR PDCCH, the problem caused by the conflict between the first resource and the second resource can be alleviated, which is beneficial to improving the system capacity of the NR PDCCH and improving the performance of the NR system. 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 physical downlink control channel receiving method according to an embodiment of the present disclosure.

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

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

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

[0023] Figure 5A It is a schematic flow chart of another physical downlink control channel receiving method according to an embodiment of the present disclosure.

[0024] Figure 5B It is a schematic diagram of a non-interlaced mapping scenario according to an embodiment of the present disclosure.

[0025] Fig. 6A It is a schematic flow chart of another physical downlink control channel receiving method according to an embodiment of the present disclosure.

[0026] Figure 6B It is a schematic diagram of a scene of interleaved mapping according to an embodiment of the present disclosure.

[0027] Figure 7 It is a schematic flow chart of another physical downlink control channel receiving method according to an embodiment of the present disclosure.

[0028] Figure 8 It is a schematic flow chart of another physical downlink control channel receiving method according to an embodiment of the present disclosure.

[0029] Fig. 9 It is a schematic flow chart of another physical downlink control channel receiving method according to an embodiment of the present disclosure.

[0030] Fig.10 It is a schematic flow chart of another physical downlink control channel receiving method according to an embodiment of the present disclosure.

[0031] Fig.11 It is a schematic flow chart of a method for sending a physical downlink control channel according to an embodiment of the present disclosure.

[0032] 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.

[0033] Fig.13 It is a schematic flow chart of another method for sending a physical downlink control channel according to an embodiment of the present disclosure.

[0034] Fig.14 It is a schematic flow chart of another method for sending a physical downlink control channel according to an embodiment of the present disclosure.

[0035] Fig.15 It is a schematic flow chart of another method for sending a physical downlink control channel according to an embodiment of the present disclosure.

[0036] Fig.16 It is a schematic flow chart of another method for sending a physical downlink control channel according to an embodiment of the present disclosure.

[0037] Fig.17 It is a schematic flow chart of another method for sending a physical downlink control channel according to an embodiment of the present disclosure.

[0038] Fig.18 It is a schematic block diagram of a physical downlink control channel receiving device according to an embodiment of the present disclosure.

[0039] Fig.19 It is a schematic block diagram of a physical downlink control channel sending device according to an embodiment of the present disclosure.

[0040] Fig. 20 It is a schematic block diagram of a device for sending a physical downlink control channel according to an embodiment of the present disclosure.

[0041] Fig.21 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

[0042] 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.

[0043] 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.

[0044] 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".

[0045] 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".

[0046] Figure 1 It is a schematic flow chart of a physical downlink control channel receiving method shown in an embodiment of the present disclosure. The physical downlink control channel receiving method shown in this embodiment can be applicable to terminals, and the terminals include but are not limited to mobile phones, tablet computers, wearable devices, sensors, Internet of Things devices (such as NB-IoT (NarrowBand Internet of Things), MTC (Machine Type Communication), eMTC (Enhance Machine Type Communication)) and other communication devices. The terminal can communicate with network equipment, and the network equipment includes but is not limited to network equipment in 4G, 5G, 6G and other communication systems, such as base stations, core networks, etc.

[0047] like Figure 1 As shown, the physical downlink control channel receiving method may include the following steps:

[0048] In step S101, a first resource occupied by an indicator channel in a long term evolution LTE system and a second resource occupied by a new radio physical downlink control channel NR PDCCH are determined;

[0049] In step S102, when the second resource conflicts with the first resource, determining a reception mode of the NRPDCCH;

[0050] In step S103, the NR PDCCH is received according to the receiving mode;

[0051] The receiving method includes at least one of the following:

[0052] A first receiving mode: receiving according to a situation where a network device punctures the NR PDCCH according to the first resource;

[0053] The second receiving method: receiving according to the situation where the network device performs rate matching RM (Rate Matching) on ​​the NR PDCCH according to the first resource.

[0054] In the embodiment of the present disclosure, two possible receiving methods are listed to receive the NR PDCCH; of course, these two receiving methods do not have to be used at the same time; that is: the communication network system can support and only support one of the above-mentioned receiving methods; it can also support the above-mentioned two receiving methods at the same time; it can also support one of the above-mentioned receiving methods and other receiving methods not listed in the embodiment of the present disclosure.

[0055] Exemplarily, the above two receiving modes may coexist; wherein the terminal may determine which of the two receiving modes to use for reception based on the communication protocol or the base station instruction. Or, in the embodiment of the present disclosure, there may be only one of the receiving modes, and the terminal may directly use this receiving mode for reception. Or, in the embodiment of the present disclosure, there may be a scenario in which one of the above two receiving modes coexists with other receiving modes not listed in the embodiment of the present disclosure in the communication system; such a scenario should also be regarded as within the protection scope of the embodiment of the present disclosure.

[0056] In one embodiment, when the second resource conflicts with the first resource, the terminal may receive the NR PDCCH in the first receiving mode, that is, the terminal can determine that the network device punctures the NR PDCCH according to the first resource, and the corresponding resource element RE (Resource Element) is used to send the LTE indication channel. In a possible implementation of the present disclosure, the LTE indication channel may include but is not limited to: PCFICH and / or PHICH.

[0057] For NR network equipment, the mapping relationship between NR PDCCH and resources (when the first resource and the second resource do not conflict) can remain unchanged, but the NR PDCCH needs to be punctured on the RE corresponding to the first resource, so the NR PDCCH will not be sent on the RE corresponding to the first resource.

[0058] In response to the network device sending PDCCH using the first sending mode (puncturing the NR PDCCH according to the first resource), the terminal may ignore the existence of the LTE indicator channel when receiving the NR PDCCH, receive the NR PDCCH in the RE in the second resource that overlaps with the first resource, and detect the NR PDCCH on this basis; or, when receiving the NR PDCCH, the terminal may consider the existence of the LTE indicator channel, and thus not receive the NRPDCCH on the RE in the second resource that overlaps with the first resource, and only receive the NR PDCCH on the RE in the second resource that does not overlap with the first resource.

[0059] The first receiving mode can alleviate the interference caused by the LTE indicator channel to the terminal receiving the NR PDCCH to a certain extent, which is beneficial to improve the system capacity of the NR PDCCH and improve the performance of the NR system. And the processing process of this method is relatively simple and easy to implement. However, due to the need to puncture the overlapping part of the RE corresponding to the NR PDCCH with the RE corresponding to the LTE indicator channel, the NR PDCCH may be lost.

[0060] In one embodiment, when the second resource conflicts with the first resource, if the terminal determines to adopt the second receiving mode to receive the NR PDCCH, it can be determined that the network device performs rate matching on the NR PDCCH according to the first resource.

[0061] For the NR network device, the NR PDCCH is rate matched according to the first resource, and the NR PDCCH can be mapped to the RE that is not occupied by the LTE indicator channel, thereby changing the mapping relationship between the NR PDCCH and the resource (relative to when the first resource and the second resource do not conflict).

[0062] In response to the network device sending the PDCCH in the second sending mode (rate matching the NR PDCCH according to the first resource), the terminal may consider the existence of the LTE indicator channel when receiving the NR PDCCH. Since the network device maps the NR PDCCH to the RE without the LTE indicator channel, the terminal detects and receives the NR PDCCH on the RE that does not transmit the LTE indicator channel. In a possible implementation of the present disclosure, the LTE indicator channel may include but is not limited to: PCFICH and / or PHICH.

[0063] The second receiving mode can alleviate the interference caused by the LTE indicator channel to the terminal receiving the NR PDCCH to a certain extent, which is conducive to improving the system capacity of the NR PDCCH and improving the performance of the NR system. This method can ensure the integrity of the NR PDCCH to the greatest extent.

[0064] According to an embodiment of the present disclosure, when the first resource occupied by the LTE indicator channel conflicts with the second resource occupied by the NR PDCCH, by adopting the first receiving mode or the second receiving mode to receive the NR PDCCH, the problem caused by the conflict between the first resource and the second resource can be alleviated, which is beneficial to improving the system capacity of the NR PDCCH and improving the performance of the NR system.

[0065] However, it should be noted that the receiving mode is not limited to the first receiving mode and the second receiving mode mentioned above, and other receiving modes can be selected as needed. Other receiving modes can also alleviate the problem caused by the conflict between the first resource and the second resource.

[0066] In one embodiment, the indicator channel includes at least one of the following:

[0067] Physical Control Format Indicator Channel PCFICH (Physical Control Format Indicator Channel);

[0068] Physical Hybrid ARQ Indicator Channel PHICH (Physical Hybrid ARQ Indicator Channel);

[0069] Among them, PCFICH can carry the control field indicator CFI (Control Field Indicator), which is used to indicate the number of OFDM (Orthogonal Frequency Division Multiplexing) symbols occupied by the control channel (such as PDCCH, PHICH, etc.) in the subframe. For example, CFI can carry 2 bits of information and be modulated by QPSK (Quadrature Phase Shift Keying).

[0070] PHICH can carry HARQ (Hybrid Automatic Repeat reQuest) information, such as HARQ-ACK and HARQ-NACK. The network device can indicate to the terminal via PHICH whether the uplink information has been successfully received. The terminal determines whether the uplink information needs to be retransmitted according to the indication in the PHICH.

[0071] It should be noted that the embodiments of the present disclosure can be applied not only to the situation where the first resources occupied by the LTE indication channel conflict with the second resources occupied by the NR PDCCH, but also to the situation where the first resources occupied by the LTE CRS (Cell-specific Reference Signal) conflict with the second resources occupied by the NR PDCCH.

[0072] That is, the method may include:

[0073] In step S101a, a first resource occupied by a cell transmission reference signal CRS in a long term evolution LTE system and a second resource occupied by a new radio interface physical downlink control channel NR PDCCH are determined;

[0074] In step S102a, when the second resource conflicts with the first resource, determining a reception mode of the NRPDCCH;

[0075] In step S103a, the NR PDCCH is received according to the receiving mode;

[0076] The receiving method includes at least one of the following:

[0077] A first method: puncturing the NR PDCCH according to the first resource;

[0078] The second method: perform rate matching RM (Rate Matching) on ​​the NR PDCCH according to the first resource.

[0079] The same explanations and limitations in the above two implementation modes will not be repeated.

[0080] Figure 2 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. Figure 2 As shown, the determining of the first resource occupied by the indicator channel in the long term evolution LTE system includes:

[0081] In step S201, the first resource is determined according to indication information sent by a network device.

[0082] In one embodiment, the indication information may be broadcast information or unicast information. The broadcast information may include system information, paging information, etc., and the unicast information may include radio resource control (RRC) signaling, DCI, media access control layer control element (MAC CE), etc. The first resource may be the first resource occupied by the indication channel in the aforementioned LTE system or the first resource occupied by the CRS in the LTE system.

[0083] The following mainly exemplifies the embodiments of the present disclosure in the case where the indication information is RRC signaling.

[0084] In one embodiment, when indicating the resources occupied by PCFICH through RRC signaling, it can be indicated by any field or information element IE in the RRC signaling; in one implementation of the present disclosure, the information element RateMatchPattenLTE-PCFICH in the RRC signaling can be used for indication, and of course, the existing information in the RRC signaling can also be reused; wherein RateMatchPattenLTE-PCFICH can include some or all of the following information elements (InformationElement, IE):

[0085] RateMatchPattenLTE-PCFICH::= SEQUENCE{

[0086] Uplink-downlink configuration{0,…,6}, OPTIONAL,--Need M

[0087] Special subframe configuration{0,…,10}, OPTIONAL,--Need M

[0088] srs-UpPtsAdd {0,2,4}, OPTIONAL,--Need M

[0089] PCI ENUMERATED{0,…,83},

[0090] }

[0091] Among them, Uplink-downlink configuration is used to indicate the downlink / uplink subframe configuration in Table 4.2-2 of the 3GPP 36.211 communication standard (Technical Specificaiton); it can also be named subframe assignment subframe assignment

[0092] Special subframe configuration, used to indicate the configuration index in table 4.2-1 of the 3GPP 36.211 communication standard (Technical Specificaiton);

[0093] srs-UpPtsAdd, used to indicate the duration of the uplink pilot time slot (UpPTS) in the 3GPP 36.211 communication standard (Technical Specificaiton);

[0094] PCI (Physical Cell id) is used to indicate the physical cell index and has a certain correspondence with the physical cell index;

[0095] The M in Need M stands for Maintain, and Need M means that when the corresponding domain does not exist, it needs to be stored by the user equipment UE.

[0096] It should be noted that the IE included in RateMatchPattenLTE-PCFICH is not limited to the above IE, and optionally, other IEs may also be included. For example, when RateMatchPattenLTE-CRS is not configured with mbsfn-SubframeConfigList, RateMatchPattenLTE-PCFICH may include mbsfn-SubframeConfigList. It should be noted that RateMatchPattenLTE-PCFICH may include one or more of the above multiple IEs, and may also include other IEs.

[0097] In one embodiment, when indicating the resources occupied by PHICH through RRC signaling, an information element RateMatchPattenLTE-PHICH in the RRC signaling may be defined for indication, and RateMatchPattenLTE-PHICH may include some or all of the following information elements IE:

[0098] RateMatchPattenLTE-PHICH::= SEQUENCE{

[0099] PHICH duration {normal,extend}

[0100] phich-Resource ENUMERATED{oneSixth,half,one,two},

[0101] }

[0102] The Phich duration is used to indicate the duration of the PHICH. For example, reference may be made to Table 6.9.3-1 of the 3GPP 36.211 communication standard (Technical Specificaiton).

[0103] phich-Resource, parameters Regarding the number of configured PHICH Groups, please refer to clause 6.9 of the 3GPP 36.211 communication standard (Technical Specification), where the value corresponding to oneSixth is 1 / 6, the value corresponding to half is 1 / 2, and so on.

[0104] It should be noted that RateMatchPattenLTE-PHICH is not limited to including the above two IEs, but may also include other IEs.

[0105] When RateMatchPattenLTE-PCIFCH includes the above-mentioned Uplink-downlink configuration, Special subframe configuration, srs-UpPtsAdd and other IEs, then RateMatchPattenLTE-PHICH can only include two IEs, PHICH duration and phich-Resource; when RateMatchPattenLTE-PCIFCH does not include the above-mentioned Uplink-downlink configuration, Special subframe configuration, srs-UpPtsAdd and other IEs, RateMatchPattenLTE-PHICH can also include Uplink-downlink configuration, Special subframe configuration, srs-UpPtsAdd and other IEs.

[0106] Among them, the network device can indicate the LTE CRS to the terminal

[0107] In an embodiment, the network device may indicate the resources occupied by the LTE CRS in addition to indicating the first resources occupied by the PCFICH and the PHICH.

[0108] For example, when indicating the resources occupied by LTE CRS through RRC signaling, the indication may be made through any field or information element IE in the RRC signaling; in one implementation of the present disclosure, the RateMatchPattenLTE-CRS in the RRC signaling may be used for indication, and the RateMatchPattenLTE-CRS may include some or all of the following IEs:

[0109]

[0110]

[0111] Wherein, carrierFreqDL represents the number of subcarrier offsets between the LTE carrier center and the reference point (e.g., point A);

[0112] carrierBandwidthDL represents the configured LTE carrier bandwidth;

[0113] mbsfn-SubframeConfigList indicates the subframe configuration of MBSFN (Multicast Broadcast Single Frequency Network);

[0114] nrofCRS-Ports indicates the number of antenna ports corresponding to the LTE CRS (e.g., 1, 2, or 4);

[0115] v-Shift represents the LTE CRS frequency domain subcarrier offset v shift ;

[0116] The following embodiments are mainly exemplified in the case where the first resources occupied by the LTE indication channel conflict with the second resources occupied by the NR PDCCH.

[0117] Figure 3 It is a schematic diagram of distribution of a first resource according to an embodiment of the present disclosure.

[0118] The PCFICH may be distributed on the first symbol in an LTE time slot, while the PHICH may be distributed on one or more symbols in an LTE time slot.

[0119] like Figure 3For time division duplex, PHICH duration is configured as extend, parameter Ng = 2, the number of LTE CRS ports is 4, and the number of downlink RBs is 25, physical cell identifier Schematic diagram of resource distribution corresponding to PCFICH and PHICH in the scenario.

[0120] in, It can be determined based on the PCI and v-Shift in the above IE:

[0121]

[0122] exist Figure 3 In the scenario shown, on the first three time domain symbols in an LTE time slot, the PCFICH is distributed on the first symbol, the PHICH is distributed on the first three symbols, and the PHICH includes multiple groups, namely PHICH Group 0, PHICH Group 1, PHICH Group 2, PHICH Group 3, PHICH Group 4, PHICH Group 5, and PHICH Group 6.

[0123] PCFICH is distributed on the first symbol in an LTE time slot. Figure 3 In the scenario shown, PCFICH is distributed on RB#0, RB#6, RB#12 and RB#18, and the 7 groups corresponding to PHICH are distributed on three symbols, and are distributed on RB#0 to RB#3 corresponding to the first symbol, RB#8 to RB#11 corresponding to the second symbol, and RB#16 to RB18 corresponding to the third symbol.

[0124] It should be noted that, due to the existence of LTE CRS, LTE CRS will also occupy some REs in some RBs, and the REs occupied by PCFICH and PHICH do not overlap with the REs occupied by LTE CRS.

[0125] exist Figure 3 In the scenario shown, the LTE CRS exists on the first symbol and the second symbol, one RB corresponds to 12 REs in the frequency domain, and the LTE CRS exists on the 1st, 4th, 7th and 10th REs in each RB.

[0126] exist Figure 3In the scenario shown, PCFICH occupies 4 REs in one REG in the frequency domain, and each PHICH Group also occupies 4 REs in one REG in the frequency domain. Then, in the first symbol and the second symbol, PCFICH and each PHICH Group and LTE CRS occupy 6 REs (but 2 of which are occupied by LTE CRS). In the third symbol, in the absence of LTE CRS scenario, each PHICH Group occupies 4 REs.

[0127] It should be noted that the PCFICH, PHICH and other indicator channels in the LTE system can be sent by the LTE network device, but the NR network device can also determine the resources occupied by the indicator channel, for example, by communicating with the LTE network device, for example, it can also be determined based on the protocol agreement. In addition, the terminal can also determine the resources occupied by the indicator channel, for example, the terminal can determine the resources occupied by the indicator channel based on a predefined rule, or it can determine the resources occupied by the indicator channel according to the indication of the NR network device.

[0128] Due to the existence of indicator channels such as PCFICH and PHICH, when the RE occupied by the indicator channel overlaps with the RE occupied by the NR PDCCH, there is a conflict between the first resource occupied by the indicator channel and the second resource occupied by the NR PDCCH, thereby causing interference to the terminal's reception of the NR PDCCH.

[0129] Figure 4 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. Figure 4 As shown, the determining the receiving method of the NR PDCCH includes:

[0130] In step S401, the reception mode of the NR PDCCH is determined according to the instruction of the network device; and / or the reception mode of the NR PDCCH is determined according to a predefined rule.

[0131] In one embodiment, the network device may send an indication (such as RRC signaling, DCI, MAC CE, etc.) to the terminal so that the terminal can determine whether to receive the NR PDCCH through the first reception mode or the second reception mode according to the indication of the network device.

[0132] The terminal may also determine to receive the NR PDCCH through the first receiving mode or the second receiving mode according to a predefined rule. For example, the predefined rule may be a protocol agreement.

[0133] The following is an exemplary description of how the terminal determines the reception mode of the NR PDCCH according to the predefined rules through several embodiments. Among them, the description of the first reception mode and the second reception mode can refer to other embodiments of the present disclosure, and will not be repeated here.

[0134] Figure 5A 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. Figure 5A As shown, the determining the receiving mode of the NR PDCCH according to the predefined rule includes:

[0135] In step S501, when the mapping relationship (CCE-to-REG) between the control channel element CCE (Control Channel Element) corresponding to the NR PDCCH and the resource element group REG (Resource Element Group) is a non-interleaved mapping, it is not expected to receive the NR PDCCH through the first receiving mode (it can also be described as expecting to receive the NR PDCCH through the second receiving mode).

[0136] The resources occupied by NR PDCCH transmission are composed of CCE, where the number of CCEs that constitute the NR PDCCH transmission resources can be called the aggregation level AL (Aggregation Level, also known as aggregation degree).

[0137] In one embodiment, when the mapping relationship between the CCE corresponding to the NR PDCCH and the REG is non-interleaved mapping, the REGs constituting the NR PDCCH are continuous in the time-frequency domain.

[0138] Every L REGs will form a REG bundle, and one or more REG bundles can form a CCE, but CCE is fixed to include 6 REGs. A REG bundle can be distributed on M symbols, and is distributed in the time domain first and then the frequency domain. The distribution in the time domain first and then the frequency domain means: distributing the REG bundle (exemplarily uniformly distributed) on multiple RBs included in one or more time domain symbols symbol corresponding to an RB index, and the number of time domain symbols is equal to the number of CORESET continuous symbols. If the number of REGs is greater than the number of time domain symbols, the REGs continue to be distributed on multiple RBs included in one or more time domain symbols corresponding to the next RB index (exemplarily, the direction in which RBs correspond to the increasing frequency domain), and so on, until one REG bundle is equal to L REGs.

[0139] Figure 5BIt is a schematic diagram of a non-interlaced mapping scenario according to an embodiment of the present disclosure.

[0140] When the mapping relationship between CCE and REG corresponding to NR PDCCH is non-interleaved mapping, L=6, M=1 or 2 or 3. Figure 5B As shown in FIG. 1 , in the case of M=2, REGs are distributed on the first symbol and the second symbol, and every 6 REGs form a REG bundle, for example, REG#0 to REG#5 form REG bundle#0, and REG#6 to REG#11 form REGbundle#1, and CCE fixedly includes 6 REGs, so in this case, a REG bundle is exactly the same as a CCE; Figure 5A As shown, the REGs constituting the NR PDCCH are contiguous.

[0141] According to Figure 3 It can be seen that the resources occupied by the indication channel are also continuous to a large extent. If the first receiving method is adopted to receive NR PDCCH, and the second resources occupied by NR PDCCH are punctured according to the first resources, then the NR PDCCH will be punctured within the continuous resource range, resulting in a large amount of DCI information carried by NR PDCCH being missing, which has a relatively serious impact on the PDCCH transmission performance.

[0142] Therefore, according to this embodiment, the predefined rules may stipulate that when the mapping relationship between the CCE and REG corresponding to the NR PDCCH is a non-interleaved mapping, the terminal does not expect to receive the NR PDCCH through the first receiving mode. Then when the terminal determines that the mapping relationship between the CCE and REG corresponding to the NR PDCCH is a non-interleaved mapping, it does not expect to receive the NR PDCCH through the first receiving mode (puncturing), and thus receives the NR PDCCH through the second receiving mode (rate matching), so as to avoid the loss of a large amount of DCI information carried by the NR PDCCH, which seriously affects the PDCCH transmission performance. Correspondingly, the NR network device that sends the NR PDCCH can relatively easily avoid the RE corresponding to the first resource by rate matching, thereby ensuring the transmission performance of the PDCCH.

[0143] Fig. 6A 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. 6A As shown, the determining the receiving mode of the NR PDCCH according to the predefined rule includes:

[0144] In step S601, when the mapping relationship between the CCE and the REG corresponding to the NR PDCCH is interleaved mapping, determine a first interval between resource units corresponding to the first resource and a second interval between resource units corresponding to the second resource;

[0145] In step S602, when the first interval is the same as the second interval, it is not expected to receive the NR PDCCH through the first receiving mode (which may also be described as receiving the NRPDCCH through the second receiving mode). Specifically, when the first interval is measured by the number of RBs or REGs, and the number is greater than 1, when the first interval is the same as the second interval, it is not expected to receive the NR PDCCH through the first receiving mode.

[0146] In one embodiment, when the mapping relationship between CCE and REG corresponding to NR PDCCH is interleaved mapping, as shown below Figure 6B As shown, the REGs making up the NR PDCCH are non-contiguous in some cases.

[0147] Every L REGs form a REG bundle, and one or more REG bundles can form a CCE. However, a CCE fixedly includes 6 REGs. REGs can be distributed on M symbols and are distributed in the time domain first and then in the frequency domain.

[0148] Figure 6B It is a schematic diagram of a scene of interleaved mapping according to an embodiment of the present disclosure.

[0149] When the mapping relationship between CCE and REG corresponding to NR PDCCH is interleaved mapping, when M=1, L=2 or 6; when M=2 or 3, L=M or 6. The correspondence between CCE and REG bundle needs to be interleaved through an interleaver, so that there can be gaps between consecutive REG bundles in CCE in the frequency domain. The gap can be determined according to the frequency domain span parameter C, where

[0150] If the interval is determined by the number of REG bundles spaced in the frequency domain, the interval is equal to C; if the interval is determined by the number of REGs spaced in the frequency domain, the interval is equal to C*n, where n is equal to the number of REGs that a REG bundle continues on an OFDM symbol.

[0151] The control resource set CORESET corresponding to the NR PDCCH contains the number of REG bundles, and R is the number of interleaver rows.

[0152] like Figure 6B As shown, in the case of M=2, REGs are distributed on the first symbol and the second symbol, and every 2 REGs form a REG bundle, for example, REG#0 and REG#1 form REG bundle#0, REG#2 and REG#3 form REGbundle#1, REG#4 and REG#5 form REG bundle#2, REG#6 and REG#7 form REG bundle#3, REG#8 and REG#9 form REG bundle#4, REG#10 and REG#11 form REG bundle#5, and REG#12 and REG#13 form REGbundle#6.

[0153] For example, When L=2,R=2, according to It can be calculated that C = 6. Since CCE is fixed to include 6 REGs, in this case, one CCE includes three REG bundles, one REG bundle occupies 2 REGs, and there are 6 REGs between the first REG bundle and the second REG bundle in CCE. For example, the three REG bundles in CCE#0 correspond to REG bundle#0, REG bundle#6 and REG bundle#1 respectively, and there are gaps between REG bundles, which makes the REGs constituting NR PDCCH non-continuous.

[0154] According to Figure 3 It can be seen that the resources occupied by the indicator channel are continuous to a large extent, but there are also discontinuous parts. If the first interval between resource units in the first resource occupied by the LTE indicator channel (for example Figure 3 If the first interval between resource units corresponding to the PCFICH in the NR PDCCH is 6 REGs), which is the same as the second interval between resource units in the second resource occupied by the NR PDCCH (under the parameter configuration, the second interval is also 6 REGs), then the NR PDCCH is received in the first receiving mode, and the second resource occupied by the NR PDCCH is punctured according to the first resource. This may result in an entire PDCCH on the punctured resource, thereby causing a large amount of DCI information carried by the NR PDCCH to be missing, which has a relatively serious impact on the PDCCH transmission performance.

[0155] Therefore, according to this embodiment, the first interval between the resource units corresponding to the first resource and the second interval between the resource units corresponding to the second resource can be determined, wherein the resource unit can be a physical resource block PRB (Physical Resource Block), REG, REG bundle, etc., and then it is determined whether the first interval is the same as the second interval.

[0156] When the first interval is the same as the second interval, if the first receiving mode is adopted to receive NRPDCCH, and the second resource occupied by NR PDCCH is punctured according to the first resource, then the NR PDCCH will be punctured within a continuous resource range, resulting in a large amount of DCI information carried by NR PDCCH missing, which has a relatively serious impact on PDCCH transmission performance.

[0157] Therefore, according to this embodiment, the predefined rules may stipulate that when the mapping relationship between the CCE and REG corresponding to the NR PDCCH is an interleaved mapping, and the first interval is the same as the second interval, the terminal does not expect to receive the NR PDCCH through the first reception mode (that is, receive the NR PDCCH in a mode other than the first reception mode, such as receiving the NR PDCCH in the second reception mode or other reception modes). Then when the terminal determines that the mapping relationship between the CCE and REG corresponding to the NR PDCCH is an interleaved mapping, and the first interval is the same as the second interval, it does not expect to receive the NRPDCCH through the first reception mode, and thus receives the NR PDCCH through the second reception mode, so as to avoid a large number of NR PDCCH missing in some resources, seriously affecting the PDCCH transmission performance. Correspondingly, the NR network device that sends the NR PDCCH can relatively easily avoid the RE corresponding to the first resource by rate matching, thereby ensuring the transmission performance of the PDCCH.

[0158] In addition, when the first interval is different from the second interval, the NR PDCCH can be received through the second receiving mode, or the NR PDCCH can be received through the first receiving mode.

[0159] Figure 7 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. Figure 7 As shown, the determining the receiving mode of the NR PDCCH according to the predefined rule includes:

[0160] In step S701, determining a resource occupancy rate of the first resource within a resource range corresponding to the NR PDCCH;

[0161] In step S702, the receiving mode is determined according to the resource occupancy rate and / or the aggregation level corresponding to the NR PDCCH.

[0162] In one embodiment, the resource occupancy rate of the first resource within the resource range corresponding to the NR PDCCH can be determined, wherein the resource occupancy rate is the ratio of part or all of the resource units corresponding to the first resource to part or all of the resource units in the resource range, and the resource range is the control resource set CORESET where the NR PDCCH is located, or the resources occupied by the partial bandwidth BWP where the NR PDCCH is located, or the resources occupied by the NR PDCCH.

[0163] The resource units include but are not limited to RE, RB, REG, and REG bundle. The resource range may be all or part of the resources in the CORESET where the NR PDCCH is located; it may also be all or part of the resources in the BWP where the NR PDCCH is located; it may also be all or part of the resources occupied by the NR PDCCH (for example, corresponding to the aggregation level). Part of the resources may be resources corresponding to part of the frequency domain and / or resources corresponding to part of the time domain, and part of the resource units may be resources corresponding to part of the frequency domain and / or resource units corresponding to part of the time domain.

[0164] Take the resource range as an example, which is part of the resources in the CORESET where the NR PDCCH is located. Figure 3 In the scenario shown, CORESET corresponds to 3 symbols in the time domain. Taking the resources corresponding to the first symbol as an example, CORESET corresponds to 25 RBs in the frequency domain, and one RB corresponds to 12 REs in the frequency domain.

[0165] If PCFICH and PHICH are considered, according to Figure 3 It can be seen that in the first OFDM symbol of the LTE time slot, the PCFICH is stored in 4 RBs, and occupies 4 REs in each RB, so the first resource occupied by the PCFICH is 4*4=16 REs. There are 7 PHICH Groups, and each PHICH Group occupies 4 REs, so the first resource occupied by the PHICH is 4*7=28 REs. Then the first resource occupied by the two indicator channels is 42 REs, so it can be determined that the resource occupancy rate in the first OFDM symbol symbol corresponding to 25 RBs (which can be the RBs corresponding to the BWP) is 42 / (12*25), which is equal to 14%. That is: resource occupancy rate = (the number of REs occupied by PCFICH + the number of REs occupied by PCFICH) ÷ the total number of REs.

[0166] If PCFICH, PHICH and LTE CRS are considered, for example Figure 3 Based on the illustrated embodiment, LTE CRS corresponds to 4 ports and occupies 4 REs in each RB corresponding to the first symbol, so it can be determined that the first resource occupied by LTE CRS in 25 RBs is 4*25=100 REs. The first resource occupied by the two indicator channels and LTE CRS is 42+100=142 REs. Then the resource occupancy rate of the first OFDM symbol corresponding to 25 RBs is 142 / (12*25), which is equal to 47%. That is: resource occupancy rate = (number of REs occupied by PCFICH + number of REs occupied by PCFICH + number of REs occupied by LTE CRS) ÷ total number of REs.

[0167] Take the resources corresponding to the three symbols in CORESET as an example:

[0168] If PCFICH and PHICH are considered, according to Figure 3 It can be seen that in the first OFDM symbol of the LTE time slot, the PCFICH is stored in 4 RBs, and occupies 4 REs in each RB, so the first resource occupied by the PCFICH is 4*4=16 REs. There are 7 PHICH groups, and each PHICH Group occupies 4 REs, so the first resource occupied by the PHICH is 4*7=28 REs. Similarly, in the second and third symbols, the first resource occupied by the PHICH is also 4*7=28 REs, so the first resource occupied by the PHICH in the three symbols is 28*3=84 REs. The PCFICH occupies 16 REs in the first symbol, and the first resource occupied by the two indicator channels is 100 REs. It can be determined that the resource occupancy rate in the corresponding 25 RBs in the three OFDM symbols is 100 / (3*12*25), which is approximately equal to 11%. That is: resource occupancy rate = (the number of REs occupied by PCFICH + the number of REs occupied by PCFICH) ÷ the total number of REs.

[0169] If PCFICH, PHICH and LTE CRS are considered, for example Figure 3Based on the illustrated embodiment, LTE CRS corresponds to 4 ports and occupies 4 REs in each RB corresponding to the first symbol. Then it can be determined that the first resource occupied by LTE CRS in 25 RBs is 4*25=100 REs. Similarly, the first resource occupied by LTE CRS in the second symbol is also 100 REs, and there is no LTE CRS in the third symbol. Then in the three OFDM symbols, the first resource occupied by the two indicator channels and LTE CRS is 100+2*100=300 REs. Then it can be determined that the resource occupancy rate in the three OFDM symbols corresponding to 25 RBs is 300 / (3*12*25), which is equal to 33%. That is: resource occupancy rate = (number of REs occupied by PCFICH + number of REs occupied by PCFICH + number of REs occupied by LTE CRS) ÷ total number of REs.

[0170] Since the higher the resource occupancy rate, the more the first resource and the second resource may overlap, then using the first receiving mode to receive the NR PDCCH may result in a large number of NR PDCCH missing, seriously affecting the PDCCH transmission performance. Therefore, the predefined rule can stipulate that the higher the resource occupancy rate, the less the terminal expects to receive the NRPDCCH through the first receiving mode, that is, the more inclined to receive the NR PDCCH through the second receiving mode, which is conducive to avoiding a large number of NR PDCCH missing and ensuring relatively good PDCCH transmission performance.

[0171] The NR PDCCH is composed of CCEs, where the number of CCEs constituting the NR PDCCH is called the aggregation level AL (for example, it can be 1, 2, 4, 8, 16, etc.). The higher the aggregation level, the more resources the NR PDCCH occupies. After puncturing the NR PDCCH, relatively more NR PDCCH content can still remain, so the impact on the NR PDCCH is small. Therefore, the predefined rule can stipulate that the higher the aggregation level, the less the terminal expects to receive the NR PDCCH through the second receiving mode, that is, the more inclined to receive the NR PDCCH through the first receiving mode, so as to simplify the processing process.

[0172] Figure 8 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. Figure 8 As shown, determining the receiving mode according to the resource occupancy and / or the aggregation level corresponding to the NR PDCCH includes:

[0173] In step S801, when the resource occupancy rate is greater than a first occupancy rate threshold, it is not expected to receive the NR PDCCH through the first receiving mode.

[0174] In one embodiment, since the higher the resource occupancy rate, the more overlap there may be between the first resource and the second resource, then using the first receiving method to receive the NR PDCCH may result in a large number of NR PDCCH missing, seriously affecting the PDCCH transmission performance.

[0175] Therefore, the predefined rules may stipulate that when the resource occupancy rate is greater than a first occupancy rate threshold (which can be set as needed, for example, it can be set to 50%), the terminal does not expect to receive the NR PDCCH through the first receiving method, that is, receives the NR PDCCH through the second receiving method, which is conducive to avoiding a large number of NR PDCCH missing and ensuring relatively good transmission performance of PDCCH.

[0176] Fig. 9 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. 9 As shown, determining the receiving mode according to the resource occupancy and / or the aggregation level corresponding to the NR PDCCH includes:

[0177] In step S901, when the resource occupancy rate is less than a second occupancy rate threshold, it is not expected to receive the NR PDCCH through the second receiving mode.

[0178] In one embodiment, since the lower the resource occupancy rate, the lower the overlap between the first resource and the second resource may be, then using the first receiving method to receive the NR PDCCH will not cause a large number of NR PDCCHs to be lost and seriously affect the PDCCH transmission performance.

[0179] Therefore, the predefined rule may stipulate that when the resource occupancy rate is less than a second occupancy rate threshold (which can be set as needed, for example, can be set to 10%), the terminal does not expect to receive the NR PDCCH through the second receiving mode, that is, receives the NR PDCCH through the first receiving mode, so as to simplify the processing process.

[0180] Fig.10 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.10 As shown, determining the receiving mode according to the resource occupancy and / or the aggregation level corresponding to the NR PDCCH includes:

[0181] In step S1001, if the resource occupancy is in the i-th occupancy interval and the aggregation level is in the i-th level interval, it is not desired to receive the NR PDCCH through the second receiving mode (it can also be described as receiving the NR PDCCH through the first receiving mode);

[0182] In step S1002, if the resource occupancy is in the i-th occupancy interval and the aggregation level is outside the i-th level interval, it is not desired to receive the NR PDCCH through the first receiving mode (it can also be described as receiving the NR PDCCH through the second receiving mode);

[0183] The upper limit value of the i-th occupancy interval is less than or equal to the lower limit value of the i+1-th occupancy interval, and the lower limit value of the i-th level interval is less than or equal to the lower limit value of the i+1-th level interval.

[0184] In the disclosed embodiment, the i-th occupancy interval may be indicated by a base station or determined by a communication protocol. The corresponding relationship between the aggregation level and the level interval may be indicated by a base station or determined by a communication protocol. In a possible implementation, the corresponding relationship between the aggregation level and the level interval may also be determined by a network side device, that is, the network side device determines a corresponding aggregation level by itself according to the current resource occupancy being in the i-th occupancy interval.

[0185] in, Fig.10 The illustrated embodiment may be executed when the resource occupancy rate is less than or equal to the first occupancy rate threshold and greater than or equal to the second occupancy rate threshold.

[0186] In one embodiment, on the one hand, due to the higher resource occupancy rate, the first resource and the second resource may overlap more. On the other hand, the higher the aggregation level, the higher the degree of discontinuity of the second resource corresponding to the NR PDCCH, and the less the overlap with the first resource may be.

[0187] It can be seen that the amount of overlap between the first resource and the second resource is affected by both resource occupancy and aggregation level. Therefore, the predefined rules can be regulated from these two aspects.

[0188] For example, n occupancy intervals and n level intervals may be constructed first, wherein the upper limit value of the i-th occupancy interval is less than or equal to the lower limit value of the i+1-th occupancy interval, and the lower limit value of the i-th level interval is less than or equal to the lower limit value of the i+1-th level interval. i and n are positive integers, and i is less than or equal to n.

[0189] Further, it is specified through a predefined rule that if the resource occupancy is in the i-th occupancy interval and the aggregation level is in the i-th level interval, it is not desired to receive the NR PDCCH through the second receiving mode;

[0190] If the resource occupancy rate is within the i-th occupancy rate interval and the aggregation level is outside the i-th level interval, it is not expected to receive the NR PDCCH through the first receiving mode.

[0191] Therefore, when the resource occupancy rate is in a higher range and the aggregation level is also in a higher range, the aggregation level causes the NR PDCCH to occupy relatively more resources. Although the LTE indication channel occupies more resources, after puncturing the NRPDCCH, relatively more NR PDCCH content can still remain, so the impact on the NR PDCCH is small. Therefore, the first receiving method can be used to receive the NR PDCCH to simplify the processing process.

[0192] When the resource occupancy rate is in a higher range but the aggregation level is in a lower range, the aggregation level makes the NR PDCCH occupy relatively fewer resources, while the LTE indicator channel occupies more resources. Then, after puncturing the NR PDCCH, relatively less NR PDCCH content will remain, so the impact on the NR PDCCH is greater. Therefore, the second receiving method can be used to receive the NR PDCCH, which is conducive to avoiding a large number of NR PDCCH losses and ensuring relatively good transmission performance of the PDCCH.

[0193] When the resource occupancy rate is in a lower range and the aggregation level is in a higher range, the aggregation level makes the NR PDCCH occupy relatively more resources, and the LTE indication channel occupies fewer resources. Then, after puncturing the NR PDCCH, relatively more NR PDCCH content can still remain, so the impact on the NR PDCCH is small. Therefore, the first receiving method can be used to receive the NR PDCCH to simplify the processing process.

[0194] When the resource occupancy rate is in a lower range, but the aggregation level is also in a lower range, the aggregation level makes the NR PDCCH occupy relatively fewer resources. Although the LTE indication channel occupies fewer resources, after puncturing the NRPDCCH, relatively small amounts of NR PDCCH content may still remain, which has a greater impact on the NR PDCCH. Therefore, the second receiving method can be used to receive the NR PDCCH, which is beneficial to avoid a large number of NR PDCCH losses and ensure relatively good transmission performance of the PDCCH.

[0195] In one embodiment, the relationship between the resource occupancy rate, the aggregation level, and the receiving mode specified by the predefined rule may be as shown in Table 1:

[0196] Resource occupancy Aggregation level Receiving method <10％ 1、2、4、8、16 The first receiving method 10% to 30% 8、16 The first receiving method 30% to 50% 16 The first receiving method >50％ 1、2、4、8、16 Second receiving method

[0197] Table 1

[0198] According to Table 1, when the resource occupancy rate is greater than 50%, no matter what the aggregation level is, the terminal does not expect to receive the NR PDCCH through the first receiving method, that is, to receive the NR PDCCH through the second receiving method, which is beneficial to avoid a large number of NR PDCCH losses and ensure relatively good transmission performance of PDCCH.

[0199] When the resource occupancy rate is less than 10%, regardless of the aggregation level, the terminal does not expect to receive the NR PDCCH through the second receiving mode, that is, receives the NR PDCCH through the first receiving mode, so as to simplify the processing process.

[0200] When the resource occupancy is between 10% and 50%:

[0201] Two occupancy intervals can be constructed first: the first occupancy interval is 10% to 30%, and the second occupancy interval is 30% to 50%; and two level intervals can be constructed, the first level interval is for or equal to 8, and the second level interval is greater than or equal to 16; that is, the upper limit value of the first occupancy interval is less than or equal to the lower limit value of the second occupancy interval, and the lower limit value of the first level interval is less than or equal to the lower limit value of the second level interval.

[0202] Furthermore, it is stipulated by a predefined rule that if the resource occupancy is in the i-th occupancy interval and the aggregation level is in the i-th level interval, it is not expected to receive the NR PDCCH through the second receiving mode; and if the resource occupancy is in the i-th occupancy interval and the aggregation level is outside the i-th level interval, it is not expected to receive the NR PDCCH through the first receiving mode. In Table 1, i can be equal to 1 or 2.

[0203] For example, when the resource occupancy rate is between 30% and 50% and the aggregation level is 16 (that is, in a range greater than or equal to 16), the resource occupancy rate is in a higher range and the aggregation level is also in a higher range. The aggregation level causes the NR PDCCH to occupy relatively more resources. Although the LTE indication channel occupies more resources, after puncturing the NR PDCCH, relatively more NR PDCCH content can still remain, so the impact on the NR PDCCH is relatively small. Therefore, the first receiving method can be used to receive the NR PDCCH to simplify the processing process.

[0204] When the resource occupancy rate is between 30% and 50%, and the aggregation level is 1, 2, 4 or 8 (that is, in the interval less than 16), the resource occupancy rate is in a higher interval, but the aggregation level is in a lower interval. The aggregation level causes the NR PDCCH to occupy relatively fewer resources, while the LTE indicator channel occupies more resources. After puncturing the NR PDCCH, relatively less NR PDCCH content will remain, so the impact on the NR PDCCH is greater. Therefore, the second receiving method can be used to receive the NR PDCCH, which is beneficial to avoid a large number of NR PDCCH losses and ensure relatively good transmission performance of the PDCCH.

[0205] When the resource occupancy rate is between 10% and 30% and the aggregation level is 8 or 16 (that is, in an interval greater than or equal to 8), the resource occupancy rate is in a lower interval and the aggregation level is in a higher interval, then the aggregation level makes the NR PDCCH occupy relatively more resources and the LTE indication channel occupies fewer resources. Then, after puncturing the NR PDCCH, relatively more NR PDCCH content can still remain, so the impact on the NR PDCCH is small. Therefore, the first receiving method can be used to receive the NR PDCCH to simplify the processing process.

[0206] When the resource occupancy rate is between 10% and 30%, and the aggregation level is 1, 2 or 4 (that is, in the interval less than 8), the resource occupancy rate is in a lower interval, but the aggregation level is also in a lower interval. Then the aggregation level makes the NR PDCCH occupy relatively fewer resources. Although the LTE indication channel occupies fewer resources, after puncturing the NR PDCCH, relatively small amounts of NR PDCCH content may still remain, which has a greater impact on the NR PDCCH. Therefore, the second receiving method can be used to receive the NR PDCCH, which is beneficial to avoid a large number of NR PDCCH losses and ensure relatively good transmission performance of the PDCCH.

[0207] It is understood that each element in Table 1 exists independently. These elements are exemplarily listed in the same table, but it does not mean that all elements in the table must exist at the same time as shown in the table. The value of each element is independent of the value of any other element in Table 1. Therefore, those skilled in the art can understand that the value of each element in Table 1 is an independent embodiment.

[0208] Fig.11It is a schematic flow chart of a method for sending a physical downlink control channel according to an embodiment of the present disclosure. The method for sending a physical downlink control channel shown in this embodiment can be executed by a network device, and the network device can communicate with a terminal. The network device includes but is not limited to base stations in a communication system such as a 4G base station, a 5G base station, and a 6G base station, and the terminal includes but is not limited to a mobile phone, a tablet computer, a wearable device, a sensor, an Internet of Things device (such as NB-IoT, MTC, eMTC) and other communication devices.

[0209] like Fig.11 As shown, the physical downlink control channel sending method may include the following steps:

[0210] In step S1101, a first resource occupied by an indicator channel in a long term evolution LTE system and a second resource occupied by a new radio interface physical downlink control channel NR PDCCH are determined;

[0211] In step S1102, when the second resource conflicts with the first resource, determining a transmission mode of the NRPDCCH;

[0212] In step S1103, the NR PDCCH is sent according to the sending mode;

[0213] The sending method includes at least one of the following:

[0214] A first transmission mode: puncturing the NR PDCCH according to the first resource;

[0215] The second sending mode: performing rate matching on the NR PDCCH according to the first resource.

[0216] In the embodiment of the present disclosure, two possible transmission modes are listed to transmit the NR PDCCH; of course, these two transmission modes do not have to be used at the same time; that is: the communication network system may support and only support one of the above transmission modes; it may also support the above two transmission modes at the same time; it may also support one of the above transmission modes and other transmission modes not listed in the embodiment of the present disclosure.

[0217] Exemplarily, the above two transmission modes may coexist; wherein the terminal may determine which of the two transmission modes corresponds to the receiving mode for reception based on the communication protocol or the base station instruction. Or, in the embodiment of the present disclosure, there may be only one of the transmission modes, and the terminal may directly use the receiving mode corresponding to this transmission mode for reception. Or, in the embodiment of the present disclosure, there may be a scenario in which one of the above two transmission modes coexists with other transmission modes not listed in the embodiment of the present disclosure in the communication system; such a scenario should also be regarded as within the protection scope of the embodiment of the present disclosure.

[0218] In one embodiment, when the second resource conflicts with the first resource, the network device may send the NR PDCCH in the first sending mode, that is, the network device punctures the NR PDCCH according to the first resource, and the corresponding RE is used to send the LTE indicator channel. In a possible implementation of the present disclosure, the LTE indicator channel may include but is not limited to: PCFICH and / or PHICH.

[0219] For NR network equipment, the mapping relationship between NR PDCCH and resources (when the first resource and the second resource do not conflict) can remain unchanged, but the NR PDCCH needs to be punctured on the RE corresponding to the first resource, so the NR PDCCH will not be sent on the RE corresponding to the first resource.

[0220] In response to the network device sending PDCCH using the first sending mode, the terminal may ignore the existence of the LTE indicator channel when receiving the NR PDCCH, and send the NR PDCCH in the RE in the second resource that overlaps with the first resource, and detect the NR PDCCH on this basis; or, when receiving the NR PDCCH, the terminal may consider the existence of the LTE indicator channel, and thus not receive the NR PDCCH on the RE in the second resource that overlaps with the first resource, and only receive the NR PDCCH on the RE in the second resource that does not overlap with the first resource.

[0221] The first transmission mode can alleviate the interference caused by the LTE indicator channel to the terminal receiving NR PDCCH to a certain extent, which is beneficial to improve the system capacity of NR PDCCH and improve the performance of the NR system. And the processing process of this method is relatively simple and easy to implement. However, due to the need to puncture the overlapping part of the RE corresponding to the NR PDCCH with the RE corresponding to the LTE indicator channel, the NR PDCCH may be lost.

[0222] In one embodiment, when the second resource conflicts with the first resource, if the network device determines to use the second sending mode to send the NR PDCCH, the rate matching of the NR PDCCH can be performed according to the first resource.

[0223] For the NR network device, the NR PDCCH is rate matched according to the first resource, and the NR PDCCH can be mapped to the RE that is not occupied by the LTE indicator channel, thereby changing the mapping relationship between the NR PDCCH and the resource (relative to when the first resource and the second resource do not conflict).

[0224] In response to the network device sending the PDCCH in the second sending mode, the terminal may consider the existence of the LTE indicator channel when receiving the NR PDCCH. Since the network device maps the NR PDCCH to the RE without the LTE indicator channel, the terminal detects and receives the NR PDCCH on the RE corresponding to the LTE indicator channel that is not transmitted. In a possible implementation of the present disclosure, the LTE indicator channel may include but is not limited to: PCFICH and / or PHICH.

[0225] The second transmission mode can alleviate the interference caused by the LTE indicator channel to the terminal receiving NR PDCCH to a certain extent, which is conducive to improving the system capacity of NR PDCCH and improving the performance of the NR system. This method can ensure the integrity of NRPDCCH to the greatest extent.

[0226] According to an embodiment of the present disclosure, when the first resource occupied by the LTE indicator channel conflicts with the second resource occupied by the NR PDCCH, by sending the NR PDCCH using the first sending mode or the second sending mode, the problem caused by the conflict between the first resource and the second resource can be alleviated, which is beneficial to improving the system capacity of the NR PDCCH and improving the performance of the NR system.

[0227] However, it should be noted that the sending mode is not limited to the first sending mode and the second sending mode mentioned above, and other sending modes can be selected as needed. Other sending modes can also alleviate the problem caused by the conflict between the first resource and the second resource.

[0228] In one embodiment, the indicator channel includes at least one of the following:

[0229] Physical Control Format Indicator Channel PCFICH;

[0230] Physical Hybrid Automatic Repeat Request Indicator Channel PHICH.

[0231] Among them, PCFICH can carry a control field indicator CFI, which is used to indicate the number of OFDM symbols occupied by control channels (such as PDCCH, PHICH, etc.) in a subframe. For example, CFI can carry 2 bits of information and be modulated by QPSK.

[0232] PHICH can carry HARQ information, such as HARQ-ACK and HARQ-NACK. The network device can indicate to the terminal through PHICH whether the uplink information has been successfully received. The terminal determines whether the uplink information needs to be retransmitted according to the indication in the PHICH.

[0233] It should be noted that the embodiments of the present disclosure may be applicable not only to the case where the first resource occupied by the LTE indicator channel conflicts with the second resource occupied by the NR PDCCH, but also to the case where the first resource occupied by the LTE CRS conflicts with the second resource occupied by the NR PDCCH. That is, the method may include:

[0234] In step S1101a, a first resource occupied by a cell transmission reference signal CRS in a long term evolution LTE system and a second resource occupied by a new radio interface physical downlink control channel NR PDCCH are determined;

[0235] In step S1102a, when the second resource conflicts with the first resource, determining a transmission mode of the NRPDCCH;

[0236] In step S1103a, the NR PDCCH is sent according to the sending mode;

[0237] The sending method includes at least one of the following:

[0238] A first transmission mode: puncturing the NR PDCCH according to the first resource;

[0239] The second sending mode: performing rate matching on the NR PDCCH according to the first resource.

[0240] The same explanations and limitations in the above two implementation modes will not be repeated.

[0241] In one embodiment, the method further includes: indicating information to the terminal for indicating the first resource. The indication information may be broadcast information or unicast information. The broadcast information may include system information, paging information, etc., and the unicast information may include RRC signaling, DCI, MAC CE, etc. The first resource may be the first resource occupied by the indication channel in the aforementioned LTE system or the first resource occupied by the CRS in the LTE system.

[0242] The following mainly exemplifies the embodiments of the present disclosure in the case where the indication information is RRC signaling.

[0243] In one embodiment, when the PCFICH is indicated by RRC signaling, it can be indicated by any field or information element IE in the RRC signaling; in one implementation of the present disclosure, the information element RateMatchPattenLTE-PCIFCH in the RRC signaling can be used for indication, and of course, the existing information in the RRC signaling can also be reused; wherein RateMatchPattenLTE-PCIFCH can include some or all of the following information elements (InformationElement, IE):

[0244] RateMatchPattenLTE-PCIFCH::= SEQUENCE{

[0245] Uplink-downlink configuration{0,…,6}, OPTIONAL,--Need M

[0246] Special subframe configuration{0,…,10}, OPTIONAL,--Need M

[0247] srs-UpPtsAdd {0,2,4}, OPTIONAL,--Need M

[0248] PCI ENUMERATED{0,…,83},

[0249] }

[0250] Among them, Uplink-downlink configuration is used to indicate the downlink / uplink subframe configuration in Table 4.2-2 of the 3GPP 36.211 communication standard (Technical Specificaiton); it can also be named subframe assignment subframe assignment

[0251] Special subframe configuration, used to indicate the configuration index in table 4.2-1 of the 3GPP 36.211 communication standard (Technical Specificaiton);

[0252] srs-UpPtsAdd, used to indicate the duration of the uplink pilot time slot (UpPTS) in the 3GPP 36.211 communication standard (Technical Specificaiton) in 36.211;

[0253] PCI (Physical Cell id) is used to indicate the physical cell index and has a certain correspondence with the physical cell index;

[0254] The M in Need M stands for Maintain, and Need M means that when the corresponding domain does not exist, it needs to be stored by the user equipment UE.

[0255] It should be noted that the IE included in RateMatchPattenLTE-PCFICH is not limited to the above IE, and optionally, other IEs may also be included. For example, when RateMatchPattenLTE-CRS is not configured with mbsfn-SubframeConfigList, RateMatchPattenLTE-PCFICH may include mbsfn-SubframeConfigList. It should be noted that RateMatchPattenLTE-PCFICH may include one or more of the above multiple IEs, and may also include other IEs.

[0256] In one embodiment, when the PHICH is indicated by RRC signaling, an information element RateMatchPattenLTE-PHICH in the RRC signaling may be defined for indication, and RateMatchPattenLTE-PHICH may include some or all of the following information elements IE:

[0257] RateMatchPattenLTE-PHICH::= SEQUENCE{

[0258] PHICH duration {normal,extend}

[0259] phich-Resource ENUMERATED{oneSixth,half,one,two},

[0260] }

[0261] The Phich duration is used to indicate the duration of the PHICH. For example, reference may be made to Table 6.9.3-1 of the 3GPP 36.211 communication standard (Technical Specificaiton).

[0262] phich-Resource, parameters Regarding the number of configured PHICH Groups, please refer to clause 6.9 of the 3GPP 36.211 communication standard (Technical Specification). The value corresponding to oneSixth is 1 / 6, the value corresponding to half is 1 / 2, and so on.

[0263] It should be noted that RateMatchPattenLTE-PHICH is not limited to including the above two IEs, but may also include other IEs.

[0264] When RateMatchPattenLTE-PCIFCH includes the above-mentioned Uplink-downlink configuration, Special subframe configuration, srs-UpPtsAdd and other IEs, then RateMatchPattenLTE-PHICH can only include two IEs, PHICH duration and phich-Resource; when RateMatchPattenLTE-PCIFCH does not include the above-mentioned Uplink-downlink configuration, Special subframe configuration, srs-UpPtsAdd and other IEs, RateMatchPattenLTE-PHICH can also include Uplink-downlink configuration, Special subframe configuration, srs-UpPtsAdd and other IEs.

[0265] Among them, the network device can indicate the LTE CRS to the terminal

[0266] In an embodiment, the network device may indicate the resources occupied by the LTE CRS in addition to indicating the first resources occupied by the PCFICH and the PHICH.

[0267] For example, when indicating the resources occupied by LTE CRS through RRC signaling, the indication may be made through any field or information element IE in the RRC signaling; in one implementation of the present disclosure, the information element RateMatchPattenLTE-CRS in the RRC signaling may be used for indication, and RateMatchPattenLTE-CRS may include some or all of the following IEs:

[0268]

[0269] Wherein, carrierFreqDL represents the number of subcarrier offsets between the LTE carrier center and the reference point (e.g., point A);

[0270] carrierBandwidthDL represents the configured LTE carrier bandwidth;

[0271] mbsfn-SubframeConfigList indicates the subframe configuration of MBSFN (Multicast Broadcast Single Frequency Network);

[0272] nrofCRS-Ports indicates the number of antenna ports corresponding to the LTE CRS (e.g., 1, 2, or 4);

[0273] v-Shift represents the LTE CRS frequency domain subcarrier offset v shift ;

[0274] The following embodiments are mainly exemplified in the case where the first resources occupied by the LTE indication channel conflict with the second resources occupied by the NR PDCCH.

[0275] Due to the existence of indicator channels such as PCFICH and PHICH, when the RE occupied by the indicator channel overlaps with the RE occupied by the NR PDCCH, there is a conflict between the first resource occupied by the indicator channel and the second resource occupied by the NR PDCCH, thereby causing interference to the terminal's reception of the NR PDCCH.

[0276] In one embodiment, the method further includes: indicating information to the terminal for indicating the first resource. The indication information may be broadcast information or unicast information. The broadcast information may include system information, paging information, etc., and the unicast information may include RRC signaling, DCI, MAC CE, etc.

[0277] In one embodiment, determining the sending mode of the NR PDCCH includes: determining the sending mode of the NR PDCCH according to the implementation of the network device; and / or determining the sending mode of the NR PDCCH according to a predefined rule.

[0278] The network device can determine the NR PDCCH sending mode according to its own implementation, and send an indication of the corresponding NR PDCCH receiving mode (such as RRC signaling, DCI, MAC CE, etc.) to the terminal, so that the terminal can determine whether to receive the NR PDCCH through the first receiving mode or the second receiving mode according to the indication of the network device.

[0279] The network device may also determine whether to send the NR PDCCH through the first transmission mode or the second transmission mode according to a predefined rule. For example, the predefined rule may be a protocol agreement.

[0280] The following is an exemplary description of the network device determining the transmission mode of NR PDCCH according to the predefined rules through several embodiments. Among them, the description of the first receiving mode and the second receiving mode can refer to other embodiments of the present disclosure, and will not be repeated here.

[0281] 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, the determining the sending mode of the NR PDCCH according to the predefined rule includes:

[0282] In step S1201, when the mapping relationship between the control channel element CCE corresponding to the NR PDCCH and the resource element group REG is non-interleaved mapping, it is determined to send the NR PDCCH through the second sending mode.

[0283] In one embodiment, when the mapping relationship between the CCE and REG corresponding to the NR PDCCH is non-interleaved mapping, the REGs constituting the NR PDCCH are continuous in the time-frequency domain. Figure 3 It can be seen that the resources occupied by the indicator channel are also continuous to a large extent. If the first transmission mode is adopted to send NR PDCCH, and the NR PDCCH is punctured according to the first resource, then the NR PDCCH will be punctured within a continuous resource range, resulting in a large amount of DCI information carried by the NR PDCCH being missing, which has a relatively serious impact on the PDCCH transmission performance.

[0284] According to this embodiment, the predefined rule may stipulate that when the mapping relationship between the CCE and REG corresponding to the NR PDCCH is non-interleaved mapping, the network device sends the NR PDCCH through the second sending mode. Then, when the network device determines that the mapping relationship between the CCE and REG corresponding to the NRPDCCH is non-interleaved mapping, it sends the NRPDCCH through the second sending mode to avoid the loss of a large amount of DCI information carried by the NR PDCCH, which seriously affects the PDCCH transmission performance.

[0285] Fig.13 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.13 As shown, the determining the sending mode of the NR PDCCH according to the predefined rule includes:

[0286] In step S1301, when the mapping relationship between the CCE and the REG corresponding to the NR PDCCH is interleaved mapping, determine a first interval between resource units corresponding to the first resource and a second interval between resource units corresponding to the second resource;

[0287] In step S1302, when the first interval is the same as the second interval, it is determined to send the NR PDCCH by the second transmission mode. Specifically, when the first interval is measured by the number of RBs or REGs, and the number is greater than 1, when the first interval is the same as the second interval, it is determined to send the NR PDCCH by the second transmission mode.

[0288] In one embodiment, when the mapping relationship between the CCE and REG corresponding to the NR PDCCH is interleaved mapping, such as Figure 6B As shown, the REGs making up the NR PDCCH are non-contiguous in some cases.

[0289] According to this embodiment, a first interval between resource units corresponding to the first resource and a second interval between resource units corresponding to the second resource can be determined, wherein the resource unit can be a physical resource block PRB, REG, REG bundle, etc., and then it is determined whether the first interval is the same as the second interval.

[0290] According to Figure 3 It can be seen that the resources occupied by the indicator channel are continuous to a large extent, but there are also discontinuous parts. If the first interval between resource units in the first resource occupied by the LTE indicator channel (for example Figure 3If the first interval between resource units corresponding to the PCFICH in the NR PDCCH is 6 REGs), which is the same as the second interval between resource units in the second resource occupied by the NR PDCCH (under the parameter configuration, the second interval is also 6 REGs), then the NR PDCCH is received in the first receiving mode, and the second resource occupied by the NR PDCCH is punctured according to the first resource. This may result in an entire PDCCH on the punctured resource, thereby causing a large amount of DCI information carried by the NR PDCCH to be missing, which has a relatively serious impact on the PDCCH transmission performance.

[0291] Therefore, according to this embodiment, the predefined rule may stipulate that when the mapping relationship between the CCE and REG corresponding to the NR PDCCH is interleaved mapping, and the first interval is the same as the second interval, the network device sends the NR PDCCH through the second sending mode (the NR PDCCH may also be sent in other ways other than the first sending mode). Then, when the network device determines that the mapping relationship between the CCE and REG corresponding to the NR PDCCH is interleaved mapping, and the first interval is the same as the second interval, the NR PDCCH is sent through the second sending mode to avoid a large number of NR PDCCH missing in some resources, which seriously affects the PDCCH transmission performance.

[0292] In addition, when the first interval is different from the second interval, the NR PDCCH can be sent through the first sending method, and the NR PDCCH can be received through the second receiving method.

[0293] Fig.14 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.14 As shown, the determining the sending mode of the NR PDCCH according to the predefined rule includes:

[0294] In step S1401, determining a resource occupancy rate of the first resource within a resource range corresponding to the NR PDCCH;

[0295] In step S1402, the sending mode is determined according to the resource occupancy rate and / or the aggregation level corresponding to the NR PDCCH.

[0296] In one embodiment, the resource occupancy rate of the first resource within the resource range corresponding to the NR PDCCH can be determined, wherein the resource occupancy rate is the ratio of part or all of the resource units corresponding to the first resource to part or all of the resource units in the resource range, and the resource range is the control resource set CORESET where the NR PDCCH is located, or the resources occupied by the partial bandwidth BWP where the NR PDCCH is located, or the resources occupied by the NR PDCCH.

[0297] The resource units include but are not limited to RE, RB, REG, and REG bundle. The resource range may be all or part of the resources in the CORESET where the NR PDCCH is located; it may also be all or part of the resources in the BWP where the NR PDCCH is located; it may also be all or part of the resources occupied by the NR PDCCH (for example, corresponding to the aggregation level). Part of the resources may be resources corresponding to part of the frequency domain and / or resources corresponding to part of the time domain, and part of the resource units may be resources corresponding to part of the frequency domain and / or resource units corresponding to part of the time domain.

[0298] If PCFICH and PHICH are considered, according to Figure 3 It can be seen that in the first OFDM symbol of the LTE time slot, the PCFICH is stored in 4 RBs, and occupies 4 REs in each RB, so the first resource occupied by the PCFICH is 4*4=16 REs. There are 7 PHICH Groups, and each PHICH Group occupies 4 REs, so the first resource occupied by the PHICH is 4*7=28 REs. Then the first resource occupied by the two indicator channels is 42 REs, so it can be determined that the resource occupancy rate in the first OFDM symbol symbol corresponding to 25 RBs (which can be the RBs corresponding to the BWP) is 42 / (12*25), which is equal to 14%. That is: resource occupancy rate = (the number of REs occupied by PCFICH + the number of REs occupied by PCFICH) ÷ the total number of REs.

[0299] If PCFICH, PHICH and LTE CRS are considered, for example Figure 3Based on the illustrated embodiment, LTE CRS corresponds to 4 ports and occupies 4 REs in each RB corresponding to the first symbol, so it can be determined that the first resource occupied by LTE CRS in 25 RBs is 4*25=100 REs. The first resource occupied by the two indicator channels and LTE CRS is 42+100=142 REs. Then the resource occupancy rate of the first OFDM symbol corresponding to 25 RBs is 142 / (12*25), which is equal to 47%. That is: resource occupancy rate = (number of REs occupied by PCFICH + number of REs occupied by PCFICH + number of REs occupied by LTE CRS) ÷ total number of REs.

[0300] Take the resources corresponding to the three symbols in CORESET as an example:

[0301] If PCFICH and PHICH are considered, according to Figure 3 It can be seen that in the first OFDM symbol of the LTE time slot, the PCFICH is stored in 4 RBs, occupying 4 REs in each RB, so the first resource occupied by the PCFICH is 4*4=16 REs. There are 7 PHICH groups, each PHICH Group occupies 4 REs, so the first resource occupied by the PHICH is 4*7=28 REs. Similarly, in the second and third symbols, the first resource occupied by the PHICH is also 4*7=28 REs, so the first resource occupied by the PHICH in the three symbols is 28*3=84 REs. The first resource occupied by the two indicator channels is 100 REs, so it can be determined that the resource occupancy rate in the corresponding 25 RBs in the three OFDM symbols is 100 / (3*12*25), which is approximately equal to 11%. That is: resource occupancy rate = (the number of REs occupied by PCFICH + the number of REs occupied by PCFICH) ÷ the total number of REs.

[0302] If PCFICH, PHICH and LTE CRS are considered, for example Figure 3Based on the illustrated embodiment, LTE CRS corresponds to 4 ports and occupies 4 REs in each RB corresponding to the first symbol. Then it can be determined that the first resource occupied by LTE CRS in 25 RBs is 4*25=100 REs. Similarly, the first resource occupied by LTE CRS in the second symbol is also 100 REs, and there is no LTE CRS in the third symbol. Then in the three OFDM symbols, the first resource occupied by the two indicator channels and LTE CRS is 100+2*100=300 REs. Then it can be determined that the resource occupancy rate in the three OFDM symbols corresponding to 25 RBs is 300 / (3*12*25), which is equal to 33%. That is: resource occupancy rate = (number of REs occupied by PCFICH + number of REs occupied by PCFICH + number of REs occupied by LTE CRS) ÷ total number of REs.

[0303] Since the higher the resource occupancy rate, the more the first resource and the second resource may overlap, then sending the NR PDCCH using the first sending mode may result in a large number of NR PDCCH missing, seriously affecting the PDCCH transmission performance. Therefore, the predefined rule may stipulate that the higher the resource occupancy rate, the more the network device tends to send the NR PDCCH using the second sending mode, which is conducive to avoiding a large number of NR PDCCH missing and ensuring relatively good PDCCH transmission performance.

[0304] The NR PDCCH is composed of CCEs, wherein the number of CCEs constituting the NR PDCCH is called the aggregation level AL (for example, it can be 1, 2, 4, 8, 16, etc.), the higher the aggregation level, the more resources the NR PDCCH occupies, and after puncturing the NR PDCCH, relatively more NR PDCCH content can still remain, so the impact on the NR PDCCH is small. Therefore, the predefined rule can stipulate that the higher the aggregation level, the more the network device tends to receive the NR PDCCH through the first receiving mode, so as to simplify the processing process.

[0305] Fig.15 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.15 As shown, the determining the sending mode according to the resource occupancy and / or the aggregation level corresponding to the NR PDCCH includes:

[0306] In step S1501, when the resource occupancy rate is greater than a first occupancy rate threshold, it is determined to send the NR PDCCH using the second sending mode.

[0307] In one embodiment, since the higher the resource occupancy rate, the more overlap there may be between the first resource and the second resource, then using the first sending method to send NR PDCCH may result in a large number of NR PDCCH missing, seriously affecting PDCCH transmission performance.

[0308] Therefore, the predefined rules may stipulate that when the resource occupancy rate is greater than a first occupancy rate threshold (which can be set as needed, for example, it can be set to 50%), the network device sends the NR PDCCH through the second sending mode, which is beneficial to avoid a large number of NR PDCCH missing and ensure relatively good transmission performance of PDCCH.

[0309] Fig.16 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.16 As shown, the determining the sending mode according to the resource occupancy and / or the aggregation level corresponding to the NR PDCCH includes:

[0310] In step S1601, when the resource occupancy rate is less than a second occupancy rate threshold, it is determined to send the NR PDCCH using the first sending mode.

[0311] In one embodiment, since the lower the resource occupancy rate, the lower the overlap between the first resource and the second resource may be, then using the first sending method to send NR PDCCH will not cause a large number of NR PDCCHs to be lost and seriously affect the PDCCH transmission performance.

[0312] Therefore, the predefined rule may stipulate that when the resource occupancy rate is less than a second occupancy rate threshold (which can be set as needed, for example, can be set to 10%), the network device sends the NR PDCCH through the first sending mode to simplify the processing process.

[0313] Fig.17 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.17 As shown, the determining the sending mode according to the resource occupancy and / or the aggregation level corresponding to the NR PDCCH includes:

[0314] In step S1701, if the resource occupancy is in the i-th occupancy interval and the aggregation level is in the i-th level interval, it is determined to send the NR PDCCH through the first sending mode;

[0315] In step S1702, if the resource occupancy rate is in the i-th occupancy rate interval and the aggregation level is outside the i-th level interval, determining to send the NR PDCCH by using the second sending mode;

[0316] The upper limit value of the i-th occupancy interval is less than or equal to the lower limit value of the i+1-th occupancy interval, and the lower limit value of the i-th level interval is less than or equal to the lower limit value of the i+1-th level interval.

[0317] In the disclosed embodiment, the i-th occupancy interval may be indicated by a base station or determined by a communication protocol. The corresponding relationship between the aggregation level and the level interval may be indicated by a base station or determined by a communication protocol. In a possible implementation, the corresponding relationship between the aggregation level and the level interval may also be determined by a network side device, that is, the network side device determines a corresponding aggregation level by itself according to the current resource occupancy being in the i-th occupancy interval.

[0318] In one embodiment, on the one hand, due to the higher resource occupancy rate, the first resource and the second resource may overlap more. On the other hand, the higher the aggregation level, the higher the degree of discontinuity of the second resource corresponding to the NR PDCCH, and the less the overlap with the first resource may be.

[0319] It can be seen that the amount of overlap between the first resource and the second resource is affected by both resource occupancy and aggregation level. Therefore, the predefined rules can be regulated from these two aspects.

[0320] For example, n occupancy intervals and n level intervals may be constructed first, wherein the upper limit value of the i-th occupancy interval is less than or equal to the lower limit value of the i+1-th occupancy interval, and the lower limit value of the i-th level interval is less than or equal to the lower limit value of the i+1-th level interval. i and n are positive integers, and i is less than or equal to n.

[0321] Furthermore, it is specified through a predefined rule that if the resource occupancy is in the i-th occupancy interval and the aggregation level is in the i-th level interval, the NR PDCCH is sent through the second sending mode;

[0322] If the resource occupancy rate is within the i-th occupancy rate interval and the aggregation level is outside the i-th level interval, the NR PDCCH is sent using the second sending mode.

[0323] Therefore, when the resource occupancy rate is in a higher range and the aggregation level is also in a higher range, the aggregation level causes the NR PDCCH to occupy relatively more resources. Although the LTE indication channel occupies more resources, after puncturing the NRPDCCH, relatively more NR PDCCH content can still remain, so the impact on the NR PDCCH is small. Therefore, the first sending method can be used to send the NR PDCCH to simplify the processing process.

[0324] When the resource occupancy rate is in a higher range but the aggregation level is in a lower range, the aggregation level makes the NR PDCCH occupy relatively fewer resources, while the LTE indicator channel occupies more resources. Then, after puncturing the NR PDCCH, relatively less NR PDCCH content will remain, so the impact on the NR PDCCH is greater. Therefore, the second sending mode can be used to send the NR PDCCH, which is conducive to avoiding a large number of NR PDCCH losses and ensuring relatively good transmission performance of the PDCCH.

[0325] When the resource occupancy rate is in a lower range and the aggregation level is in a higher range, the aggregation level makes the NR PDCCH occupy relatively more resources, and the LTE indication channel occupies fewer resources. Then, after puncturing the NR PDCCH, relatively more NR PDCCH content can still remain, so the impact on the NR PDCCH is small. Therefore, the first sending method can be used to send the NR PDCCH to simplify the processing process.

[0326] When the resource occupancy rate is in a lower range, but the aggregation level is also in a lower range, the aggregation level makes the NR PDCCH occupy relatively fewer resources. Although the LTE indication channel occupies fewer resources, after puncturing the NRPDCCH, relatively small amounts of NR PDCCH content may still remain, which has a greater impact on the NR PDCCH. Therefore, the second transmission method can be used to send the NR PDCCH, which is beneficial to avoid a large number of NR PDCCH losses and ensure relatively good transmission performance of the PDCCH.

[0327] In one embodiment, the relationship between the resource occupancy, aggregation level, and receiving mode specified by the predefined rule may be as shown in Table 1. According to Table 1, when the resource occupancy is greater than 50%, regardless of the aggregation level, the terminal does not expect to send the NR PDCCH through the first sending mode, that is, to send the NRPDCCH through the second sending mode, which is conducive to avoiding a large number of NR PDCCH losses and ensuring relatively good transmission performance of PDCCH.

[0328] When the resource occupancy rate is less than 10%, regardless of the aggregation level, the terminal does not expect to send the NR PDCCH through the second transmission mode, that is, sends the NR PDCCH through the first transmission mode, so as to simplify the processing process.

[0329] When the resource occupancy is between 10% and 50%:

[0330] Two occupancy intervals can be constructed first: the first occupancy interval is 10% to 30%, and the second occupancy interval is 30% to 50%; and two level intervals can be constructed, the first level interval is for or equal to 8, and the second level interval is greater than or equal to 16; that is, the upper limit value of the first occupancy interval is less than or equal to the lower limit value of the second occupancy interval, and the lower limit value of the first level interval is less than or equal to the lower limit value of the second level interval.

[0331] Furthermore, it is stipulated by a predefined rule that if the resource occupancy is in the i-th occupancy interval and the aggregation level is in the i-th level interval, it is not expected to receive the NR PDCCH through the second receiving mode; and if the resource occupancy is in the i-th occupancy interval and the aggregation level is outside the i-th level interval, it is not expected to receive the NR PDCCH through the first receiving mode. In Table 1, i can be equal to 1 or 2.

[0332] When the resource occupancy rate is between 30% and 50% and the aggregation level is 16 (that is, in the interval greater than or equal to 16), the resource occupancy rate is in a higher interval and the aggregation level is also in a higher interval. The aggregation level makes the NR PDCCH occupy relatively more resources. Although the LTE indication channel occupies more resources, after puncturing the NR PDCCH, relatively more NR PDCCH content can still remain, so the impact on the NR PDCCH is small. Therefore, the first sending method can be used to send the NR PDCCH to simplify the processing process.

[0333] When the resource occupancy rate is between 30% and 50%, and the aggregation level is 1, 2, 4 or 8 (that is, in the interval less than 16), the resource occupancy rate is in a higher interval, but the aggregation level is in a lower interval. The aggregation level causes the NR PDCCH to occupy relatively fewer resources, while the LTE indicator channel occupies more resources. After puncturing the NR PDCCH, relatively less NR PDCCH content will remain, so the impact on the NR PDCCH is greater. Therefore, the second sending mode can be used to send the NR PDCCH, which is beneficial to avoid a large number of NR PDCCH losses and ensure relatively good transmission performance of the PDCCH.

[0334] When the resource occupancy rate is between 10% and 30% and the aggregation level is 8 or 16 (that is, in the interval greater than or equal to 8), the resource occupancy rate is in the lower interval and the aggregation level is in the higher interval, then the aggregation level makes the NR PDCCH occupy relatively more resources and the LTE indication channel occupies fewer resources. Then, after puncturing the NR PDCCH, relatively more NR PDCCH content can still remain, so the impact on the NR PDCCH is small. Therefore, the first sending method can be used to send the NR PDCCH to simplify the processing process.

[0335] When the resource occupancy rate is between 10% and 30%, and the aggregation level is 1, 2 or 4 (that is, in the interval less than 8), the resource occupancy rate is in a lower interval, but the aggregation level is also in a lower interval. Then the aggregation level makes the NR PDCCH occupy relatively fewer resources. Although the LTE indicator channel occupies fewer resources, after puncturing the NR PDCCH, relatively small amounts of NR PDCCH content may still remain, which has a greater impact on the NR PDCCH. Therefore, the second sending mode can be used to send the NR PDCCH, which is beneficial to avoid a large number of NR PDCCH losses and ensure relatively good transmission performance of the PDCCH.

[0336] It is understood that each element in Table 1 exists independently. These elements are exemplarily listed in the same table, but it does not mean that all elements in the table must exist at the same time as shown in the table. The value of each element is independent of the value of any other element in Table 1. Therefore, those skilled in the art can understand that the value of each element in Table 1 is an independent embodiment.

[0337] Corresponding to the aforementioned embodiments of the method for receiving a physical downlink control channel and the method for sending a physical downlink control channel, the present disclosure further provides embodiments of a device for receiving a physical downlink control channel and a device for sending a physical downlink control channel.

[0338] Fig.18 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 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. The terminal can communicate with a network device, and the network device includes but is not limited to a network device in a 4G, 5G, 6G and other communication systems, such as a base station, a core network, etc.

[0339] like Fig.18 As shown, the physical downlink control channel receiving device may include:

[0340] The processing module 1801 is configured to determine a first resource occupied by an indicator channel in a long term evolution LTE system and a second resource occupied by a new radio interface physical downlink control channel NR PDCCH; when the second resource conflicts with the first resource, determine a reception mode of the NR PDCCH;

[0341] The receiving module 1802 is configured to receive the NR PDCCH according to the receiving mode;

[0342] The receiving method includes at least one of the following:

[0343] A first receiving mode: puncturing the NR PDCCH according to the first resource;

[0344] The second receiving mode: performing rate matching on the NR PDCCH according to the first resource.

[0345] In one embodiment, the indicator channel includes at least one of the following: a physical control format indicator channel PCFICH; a physical hybrid automatic repeat request indicator channel PHICH.

[0346] In one embodiment, the processing module is configured to determine the reception mode of the NRPDCCH according to the indication of the network device; and / or determine the reception mode of the NR PDCCH according to a predefined rule.

[0347] In one embodiment, the processing module is configured to not expect to receive the NR PDCCH through the first receiving mode when the mapping relationship between the control channel element CCE corresponding to the NR PDCCH and the resource element group REG is a non-interleaved mapping.

[0348] In one embodiment, the processing module is configured to determine a first interval between resource units corresponding to the first resources and a second interval between resource units corresponding to the second resources when the mapping relationship between the CCE and REG corresponding to the NR PDCCH is an interleaved mapping; when the first interval is the same as the second interval, it is not expected to receive the NR PDCCH through the first receiving mode.

[0349] In one embodiment, the processing module is configured to determine the resource occupancy of the first resource within the resource range corresponding to the NR PDCCH; and determine the receiving mode according to the resource occupancy and / or the aggregation level corresponding to the NR PDCCH.

[0350] In one embodiment, the resource occupancy rate is a ratio of the number of some or all resource units corresponding to the first resource to the number of some or all resource units in the resource range.

[0351] In one embodiment, the resource range is the resources occupied by the control resource set CORESET where the NR PDCCH is located, or the partial bandwidth BWP where the NR PDCCH is located, or the resources occupied by the NR PDCCH.

[0352] In one embodiment, the processing module is configured to not expect to receive the NR PDCCH through the first receiving mode when the resource occupancy is greater than a first occupancy threshold.

[0353] In one embodiment, the processing module is configured to not expect to receive the NR PDCCH through the second receiving mode when the resource occupancy is less than a second occupancy threshold.

[0354] In one embodiment, it is configured that if the resource occupancy is in the i-th occupancy interval and the aggregation level is in the i-th level interval, it is not expected to receive the NR PDCCH through the second receiving mode;

[0355] If the resource occupancy is within the i-th occupancy interval and the aggregation level is outside the i-th level interval, or if the resource occupancy is outside the i-th occupancy interval and the aggregation level is within the i-th level interval, it is not desired to receive the NR PDCCH through the first receiving mode;

[0356] The upper limit value of the i-th occupancy interval is less than or equal to the lower limit value of the i+1-th occupancy interval, and the lower limit value of the i-th level interval is less than the lower limit value of the i+1-th level interval.

[0357] In one embodiment, the processing module is configured to determine the first resource according to indication information sent by a network device.

[0358] Fig.19 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 executed by a network device, and the network device can communicate with a terminal. The network device includes but is not limited to base stations in communication systems such as 4G base stations, 5G base stations, and 6G base stations. The terminal includes but is not limited to mobile phones, tablet computers, wearable devices, sensors, Internet of Things devices (such as NB-IoT, MTC, eMTC) and other communication devices.

[0359] like Fig.19As shown, the physical downlink control channel sending device may include:

[0360] The processing module 1901 is configured to determine a first resource occupied by an indicator channel in a long term evolution LTE system and a second resource occupied by a new radio interface physical downlink control channel NR PDCCH; when the second resource conflicts with the first resource, determine a sending mode of the NR PDCCH;

[0361] The sending module 1902 is configured to send the NR PDCCH according to the sending mode;

[0362] The sending method includes at least one of the following:

[0363] A first transmission mode: puncturing the NR PDCCH according to the first resource;

[0364] The second sending mode: performing rate matching on the NR PDCCH according to the first resource.

[0365] In one embodiment, the indicator channel includes at least one of the following: a physical control format indicator channel PCFICH; a physical hybrid automatic repeat request indicator channel PHICH.

[0366] In one embodiment, determining the sending mode of the NR PDCCH includes: determining the sending mode of the NR PDCCH according to the implementation of the network device; and / or determining the sending mode of the NR PDCCH according to a predefined rule.

[0367] In one embodiment, the processing module is configured to determine to send the NR PDCCH through the second sending mode when the mapping relationship between the control channel element CCE corresponding to the NR PDCCH and the resource element group REG is a non-interleaved mapping.

[0368] In one embodiment, the processing module is configured to determine a first interval between resource units corresponding to the first resources and a second interval between resource units corresponding to the second resources when the mapping relationship between the CCE and REG corresponding to the NR PDCCH is an interleaved mapping; and when the first interval is the same as the second interval, determine to send the NR PDCCH through the second sending mode.

[0369] In one embodiment, the processing module is configured to determine the resource occupancy rate of the first resource within the resource range corresponding to the NR PDCCH; and determine the sending mode according to the resource occupancy rate and / or the aggregation level corresponding to the NR PDCCH.

[0370] In one embodiment, the resource occupancy rate is a ratio of the number of some or all resource units corresponding to the first resource to the number of some or all resource units in the resource range.

[0371] In one embodiment, the resource range is the resources occupied by the control resource set CORESET where the NR PDCCH is located, or the partial bandwidth BWP where the NR PDCCH is located, or the resources occupied by the NR PDCCH.

[0372] In one embodiment, the processing module is configured to determine to send the NR PDCCH through the second sending mode when the resource occupancy is greater than a first occupancy threshold.

[0373] In one embodiment, the processing module is configured to determine to send the NR PDCCH through the first sending mode when the resource occupancy rate is less than a second occupancy rate threshold.

[0374] In one embodiment, the processing module is configured to determine to send the NR PDCCH by using the first sending mode if the resource occupancy is in the i-th occupancy interval and the aggregation level is in the i-th level interval;

[0375] If the resource occupancy is within the i-th occupancy interval and the aggregation level is outside the i-th level interval, or if the resource occupancy is outside the i-th occupancy interval and the aggregation level is within the i-th level interval, determining to send the NR PDCCH by using the second sending mode;

[0376] The upper limit value of the i-th occupancy interval is less than or equal to the lower limit value of the i+1-th occupancy interval, and the lower limit value of the i-th level interval is less than the lower limit value of the i+1-th level interval.

[0377] In one embodiment, the sending module is further configured to indicate information to the terminal, for indicating the first resource.

[0378] 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.

[0379] 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.

[0380] 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.

[0381] 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.

[0382] 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.

[0383] 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.

[0384] like Fig. 20 As shown, Fig. 20 2 is a schematic block diagram of an apparatus 2000 for transmitting a physical downlink control channel according to an embodiment of the present disclosure. The apparatus 2000 may be provided as a base station. Fig. 20 The apparatus 2000 includes a processing component 2022, a wireless transmitting / receiving component 2024, an antenna component 2026, and a signal processing part specific to a wireless interface. The processing component 2022 may further include one or more processors. One of the processors in the processing component 2022 may be configured to implement the physical downlink control channel sending method described in any of the above embodiments.

[0385] Fig.212 is a schematic block diagram of an apparatus 2100 for receiving a physical downlink control channel according to an embodiment of the present disclosure. For example, the apparatus 2100 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.

[0386] Reference Fig.21 , the device 2100 may include one or more of the following components: a processing component 2102 , a memory 2104 , a power component 2106 , a multimedia component 2108 , an audio component 2110 , an input / output (I / O) interface 2112 , a sensor component 2114 , and a communication component 2116 .

[0387] The processing component 2102 generally controls the overall operation of the device 2100, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 2102 may include one or more processors 2120 to execute instructions to complete all or part of the steps of the above-mentioned physical downlink control channel reception method. In addition, the processing component 2102 may include one or more modules to facilitate the interaction between the processing component 2102 and other components. For example, the processing component 2102 may include a multimedia module to facilitate the interaction between the multimedia component 2108 and the processing component 2102.

[0388] The memory 2104 is configured to store various types of data to support operations on the device 2100. Examples of such data include instructions for any application or method operating on the device 2100, contact data, phone book data, messages, pictures, videos, etc. The memory 2104 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.

[0389] The power supply component 2106 provides power to the various components of the device 2100. The power supply component 2106 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the device 2100.

[0390] The multimedia component 2108 includes a screen that provides an output interface between the device 2100 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 2108 includes a front camera and / or a rear camera. When the device 2100 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.

[0391] The audio component 2110 is configured to output and / or input audio signals. For example, the audio component 2110 includes a microphone (MIC), and when the device 2100 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 2104 or sent via the communication component 2116. In some embodiments, the audio component 2110 also includes a speaker for outputting audio signals.

[0392] I / O interface 2112 provides an interface between processing component 2102 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.

[0393] The sensor assembly 2114 includes one or more sensors for providing various aspects of status assessment for the device 2100. For example, the sensor assembly 2114 can detect the open / closed state of the device 2100, the relative positioning of components, such as the display and keypad of the device 2100, and the sensor assembly 2114 can also detect the position change of the device 2100 or a component of the device 2100, the presence or absence of user contact with the device 2100, the orientation or acceleration / deceleration of the device 2100, and the temperature change of the device 2100. The sensor assembly 2114 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 2114 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 2114 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0394] The communication component 2116 is configured to facilitate wired or wireless communication between the device 2100 and other devices. The device 2100 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 2116 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 2116 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.

[0395] In an exemplary embodiment, the device 2100 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 execute the above-mentioned physical downlink control channel reception method.

[0396] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 2104 including instructions, and the instructions can be executed by the processor 2120 of the device 2100 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.

[0397] 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.

[0398] 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.

[0399] 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.

[0400] 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 receiving a physical downlink control channel, characterized in that: Executed by a terminal, the method includes: Determine a first resource occupied by an indicator channel in a long term evolution LTE system and a second resource occupied by a new radio physical downlink control channel NR PDCCH; wherein the indicator channel includes at least one of the following: a physical control format indicator channel PCFICH; a physical hybrid automatic repeat request indicator channel PHICH; In a case where the second resource conflicts with the first resource, determining a reception mode of the NR PDCCH; Receiving the NR PDCCH according to the receiving mode; The receiving mode includes at least one of the following: a first receiving mode: receiving according to a situation where the network device punctures the NR PDCCH according to the first resource; a second receiving mode: receiving according to a situation where the network device performs rate matching on the NR PDCCH according to the first resource; Among them, when the mapping relationship between the control channel element CCE corresponding to the NR PDCCH and the resource element group REG is a non-interleaved mapping, it is not expected to receive the NR PDCCH through the first receiving mode.

2. The method according to claim 1, characterized in that The determining the receiving mode of the NR PDCCH according to the predefined rule also includes: In a case where the mapping relationship between the CCE and the REG corresponding to the NR PDCCH is an interleaved mapping, determining a first interval between resource units corresponding to the first resource and a second interval between resource units corresponding to the second resource; When the first interval is the same as the second interval, it is not expected to receive the NR PDCCH through the first reception mode.

3. The method according to claim 1, characterized in that The determining the receiving mode of the NR PDCCH according to the predefined rule also includes: Determine a resource occupancy rate of the first resource within a resource range corresponding to the NR PDCCH; The receiving mode is determined according to the resource occupancy rate and / or the aggregation level corresponding to the NR PDCCH.

4. The method according to claim 3, characterized in that The resource occupancy rate is a ratio of the number of some or all resource units corresponding to the first resource to the number of some or all resource units in the resource range.

5. The method according to claim 4, characterized in that The resource range is the resources occupied by the control resource set CORESET where the NR PDCCH is located, or the part of the bandwidth BWP where the NR PDCCH is located, or the resources occupied by the NR PDCCH.

6. The method according to claim 3, characterized in that Determining the receiving mode according to the resource occupancy rate and / or the aggregation level corresponding to the NRPDCCH includes: When the resource occupancy rate is greater than a first occupancy rate threshold, it is not expected to receive the NR PDCCH through the first receiving mode.

7. The method according to claim 3, characterized in that Determining the receiving mode according to the resource occupancy rate and / or the aggregation level corresponding to the NRPDCCH includes: When the resource occupancy rate is less than a second occupancy rate threshold, it is not expected to receive the NR PDCCH through a second receiving mode, wherein the second receiving mode is to receive the NR PDCCH according to a network device that performs rate matching on the NR PDCCH according to the first resource.

8. The method according to claim 3, characterized in that Determining the receiving mode according to the resource occupancy rate and / or the aggregation level corresponding to the NRPDCCH includes: If the resource occupancy rate is in the i-th occupancy rate interval and the aggregation level is in the i-th level interval, it is not desired to receive the NR PDCCH through a second receiving mode; wherein the second receiving mode is receiving according to a situation where a network device performs rate matching on the NR PDCCH according to the first resource; If the resource occupancy is within the i-th occupancy interval and the aggregation level is outside the i-th level interval, it is not desired to receive the NR PDCCH through the first receiving mode; The upper limit value of the i-th occupancy interval is less than or equal to the lower limit value of the i+1-th occupancy interval, and the lower limit value of the i-th level interval is less than or equal to the lower limit value of the i+1-th level interval.

9. The method according to any one of claims 1 to 8, characterized in that The determining of the first resource occupied by the indicator channel in the long term evolution LTE system comprises: The first resource is determined according to the indication information sent by the network device.

10. A physical downlink control channel receiving method, characterized in that: Executed by a terminal, the method includes: Determine a first resource occupied by an indicator channel in a long term evolution LTE system and a second resource occupied by a new radio physical downlink control channel NR PDCCH; wherein the indicator channel includes at least one of the following: a physical control format indicator channel PCFICH; a physical hybrid automatic repeat request indicator channel PHICH; In a case where the second resource conflicts with the first resource, determining a reception mode of the NR PDCCH; Receiving the NR PDCCH according to the receiving mode; The receiving mode includes: a second receiving mode: receiving according to a situation where a network device performs rate matching on the NRPDCCH according to the first resource; Among them, when the mapping relationship between the control channel element CCE corresponding to the NR PDCCH and the resource element group REG is a non-interleaved mapping, it is expected that the NR PDCCH is received through the second receiving mode, and the time domain resources occupied by the indication channel are continuous.

11. The method according to claim 10, characterized in that The determining the receiving mode of the NR PDCCH according to the predefined rule also includes: In a case where the mapping relationship between the CCE and the REG corresponding to the NR PDCCH is an interleaved mapping, determining a first interval between resource units corresponding to the first resource and a second interval between resource units corresponding to the second resource; When the first interval is the same as the second interval, it is expected that the NR PDCCH is received through the second reception mode.

12. The method according to claim 10, characterized in that The determining the receiving mode of the NR PDCCH according to the predefined rule also includes: Determine a resource occupancy rate of the first resource within a resource range corresponding to the NR PDCCH; The receiving mode is determined according to the resource occupancy rate and / or the aggregation level corresponding to the NR PDCCH.

13. The method according to claim 12, characterized in that Determining the receiving mode according to the resource occupancy rate and / or the aggregation level corresponding to the NRPDCCH includes: When the resource occupancy rate is greater than a first occupancy rate threshold, it is expected that the NR PDCCH is received through the second receiving mode.

14. The method according to claim 12, characterized in that Determining the receiving mode according to the resource occupancy rate and / or the aggregation level corresponding to the NRPDCCH includes: When the resource occupancy rate is less than a second occupancy rate threshold, it is not expected to receive the NR PDCCH through the second receiving mode.

15. The method according to claim 12, characterized in that Determining the receiving mode according to the resource occupancy rate and / or the aggregation level corresponding to the NRPDCCH includes: If the resource occupancy is in the i-th occupancy interval and the aggregation level is in the i-th level interval, it is not desired to receive the NR PDCCH through the second receiving mode; If the resource occupancy is within the i-th occupancy interval and the aggregation level is outside the i-th level interval, it is desired to receive the NR PDCCH through the second receiving mode; The upper limit value of the i-th occupancy interval is less than or equal to the lower limit value of the i+1-th occupancy interval, and the lower limit value of the i-th level interval is less than or equal to the lower limit value of the i+1-th level interval.

16. A method for sending a physical downlink control channel, characterized in that: Executed by a network device, the method includes: Determine a first resource occupied by an indicator channel in a long term evolution LTE system and a second resource occupied by a new radio physical downlink control channel NR PDCCH; wherein the indicator channel includes at least one of the following: a physical control format indicator channel PCFICH; a physical hybrid automatic repeat request indicator channel PHICH; In a case where the second resource conflicts with the first resource, determining a transmission mode of the NR PDCCH; Send the NR PDCCH according to the sending mode; The transmission mode includes at least one of the following: a first transmission mode: puncturing the NRPDCCH according to the first resource; a second transmission mode: rate matching the NR PDCCH according to the first resource; Among them, when the mapping relationship between the control channel element CCE corresponding to the NR PDCCH and the resource element group REG is a non-interleaved mapping, it is not expected to send the NR PDCCH through the first sending mode.

17. The method according to claim 16, characterized in that The determining, according to a predefined rule, the sending mode of the NR PDCCH includes: In a case where the mapping relationship between the CCE and the REG corresponding to the NR PDCCH is an interleaved mapping, determining a first interval between resource units corresponding to the first resource and a second interval between resource units corresponding to the second resource; When the first interval is the same as the second interval, determine to send the NR PDCCH using the second transmission mode.

18. The method according to claim 16, characterized in that The determining, according to a predefined rule, the sending mode of the NR PDCCH includes: Determine a resource occupancy rate of the first resource within a resource range corresponding to the NR PDCCH; The sending mode is determined according to the resource occupancy and / or the aggregation level corresponding to the NR PDCCH.

19. The method according to claim 18, characterized in that The resource occupancy rate is a ratio of the number of some or all resource units corresponding to the first resource to the number of some or all resource units in the resource range.

20. The method according to claim 19, characterized in that The resource range is the resources occupied by the control resource set CORESET where the NR PDCCH is located, or the part of the bandwidth BWP where the NR PDCCH is located, or the resources occupied by the NR PDCCH.

21. The method according to claim 18, characterized in that Determining the sending mode according to the resource occupancy rate and / or the aggregation level corresponding to the NRPDCCH includes: When the resource occupancy rate is greater than a first occupancy rate threshold, determine to send the NR PDCCH using the second sending mode.

22. The method according to claim 18, characterized in that Determining the sending mode according to the resource occupancy rate and / or the aggregation level corresponding to the NRPDCCH includes: When the resource occupancy rate is less than a second occupancy rate threshold, determine to send the NR PDCCH through the first sending mode.

23. The method according to claim 18, characterized in that Determining the sending mode according to the resource occupancy rate and / or the aggregation level corresponding to the NRPDCCH includes: If the resource occupancy rate is in the i-th occupancy rate interval and the aggregation level is in the i-th level interval, determining to send the NR PDCCH by using the first sending mode; If the resource occupancy is within the i-th occupancy interval and the aggregation level is outside the i-th level interval, or if the resource occupancy is outside the i-th occupancy interval and the aggregation level is within the i-th level interval, determining to send the NR PDCCH by using the second sending mode; The upper limit value of the i-th occupancy interval is less than or equal to the lower limit value of the i+1-th occupancy interval, and the lower limit value of the i-th level interval is less than the lower limit value of the i+1-th level interval.

24. The method according to any one of claims 16 to 23, characterized in that The method further comprises: The terminal is provided with indication information, which is used to indicate the first resource.

25. A method for receiving and sending a physical downlink control channel, characterized in that: Executed by a network device, the method includes: Determine a first resource occupied by an indicator channel in a long term evolution LTE system and a second resource occupied by a new radio physical downlink control channel NR PDCCH; wherein the indicator channel includes at least one of the following: a physical control format indicator channel PCFICH; a physical hybrid automatic repeat request indicator channel PHICH; In a case where the second resource conflicts with the first resource, determining a transmission mode of the NR PDCCH; Send the NR PDCCH according to the sending mode; The sending mode includes: a second sending mode: performing rate matching on the NR PDCCH according to the first resource; Among them, when the mapping relationship between the control channel element CCE corresponding to the NR PDCCH and the resource element group REG is a non-interleaved mapping, it is determined that the NR PDCCH is sent through the second sending mode, and the time domain resources occupied by the indication channel are continuous.

26. The method according to claim 25, characterized in that The determining, according to a predefined rule, the sending mode of the NR PDCCH further includes: In a case where the mapping relationship between the CCE and the REG corresponding to the NR PDCCH is an interleaved mapping, determining a first interval between resource units corresponding to the first resource and a second interval between resource units corresponding to the second resource; When the first interval is the same as the second interval, it is expected that the NR PDCCH is sent using the second transmission method.

27. The method according to claim 25, characterized in that The determining, according to a predefined rule, the sending mode of the NR PDCCH further includes: Determine a resource occupancy rate of the first resource within a resource range corresponding to the NR PDCCH; The sending mode is determined according to the resource occupancy and / or the aggregation level corresponding to the NR PDCCH.

28. The method according to claim 27, characterized in that Determining the sending mode according to the resource occupancy rate and / or the aggregation level corresponding to the NRPDCCH includes: When the resource occupancy rate is greater than a first occupancy rate threshold, it is expected that the NR PDCCH is sent using the second sending mode.

29. The method according to claim 27, characterized in that Determining the sending mode according to the resource occupancy rate and / or the aggregation level corresponding to the NRPDCCH includes: When the resource occupancy rate is less than a second occupancy rate threshold, it is not expected to send the NR PDCCH using the second sending mode.

30. The method according to claim 27, characterized in that Determining the sending mode according to the resource occupancy rate and / or the aggregation level corresponding to the NRPDCCH includes: If the resource occupancy is in the i-th occupancy interval and the aggregation level is in the i-th level interval, it is not desired to send the NR PDCCH through the second sending mode; If the resource occupancy is within the i-th occupancy interval and the aggregation level is outside the i-th level interval, it is desired to send the NR PDCCH through the second sending mode; The upper limit value of the i-th occupancy interval is less than or equal to the lower limit value of the i+1-th occupancy interval, and the lower limit value of the i-th level interval is less than or equal to the lower limit value of the i+1-th level interval.

31. A physical downlink control channel receiving device, characterized in that: Applicable to a terminal, the device comprises: The processing module is configured to determine a first resource occupied by an indicator channel in a long term evolution LTE system and a second resource occupied by a new radio physical downlink control channel NR PDCCH; wherein the indicator channel includes at least one of the following: a physical control format indicator channel PCFICH; a physical hybrid automatic repeat request indicator channel PHICH; In a case where the second resource conflicts with the first resource, determining a reception mode of the NR PDCCH; A receiving module, configured to receive the NR PDCCH according to the receiving mode; The receiving mode includes at least one of the following: a first receiving mode: receiving according to a situation where the network device punctures the NR PDCCH according to the first resource; a second receiving mode: receiving according to a situation where the network device performs rate matching on the NR PDCCH according to the first resource; Among them, when the mapping relationship between the control channel element CCE corresponding to the NR PDCCH and the resource element group REG is a non-interleaved mapping, it is not expected to receive the NR PDCCH through the first receiving mode, and the time domain resources occupied by the indication channel are continuous.

32. A physical downlink control channel receiving device, characterized in that: Applicable to a terminal, the device comprises: The processing module is configured to determine a first resource occupied by an indicator channel in a long term evolution LTE system and a second resource occupied by a new radio physical downlink control channel NR PDCCH; wherein the indicator channel includes at least one of the following: a physical control format indicator channel PCFICH; a physical hybrid automatic repeat request indicator channel PHICH; In a case where the second resource conflicts with the first resource, determining a reception mode of the NR PDCCH; A receiving module, configured to receive the NR PDCCH according to the receiving mode; The receiving mode includes: a second receiving mode: receiving according to the situation that the network device performs rate matching on the NRPDCCH according to the first resource; Among them, when the mapping relationship between the control channel element CCE corresponding to the NR PDCCH and the resource element group REG is a non-interleaved mapping, it is expected that the NR PDCCH is received through the second receiving mode, and the time domain resources occupied by the indication channel are continuous.

33. A physical downlink control channel sending device, characterized in that: Applicable to network equipment, the device comprises: The processing module is configured to determine a first resource occupied by an indicator channel in a long term evolution LTE system and a second resource occupied by a new radio physical downlink control channel NR PDCCH; wherein the indicator channel includes at least one of the following: a physical control format indicator channel PCFICH; a physical hybrid automatic repeat request indicator channel PHICH; In a case where the second resource conflicts with the first resource, determining a transmission mode of the NR PDCCH; A sending module, configured to send the NR PDCCH according to the sending mode; The transmission mode includes at least one of the following: a first transmission mode: puncturing the NRPDCCH according to the first resource; a second transmission mode: rate matching the NR PDCCH according to the first resource; Among them, when the mapping relationship between the control channel element CCE corresponding to the NR PDCCH and the resource element group REG is a non-interleaved mapping, it is not expected to send the NR PDCCH through the first sending mode.

34. A physical downlink control channel sending device, characterized in that: Applicable to network equipment, the device comprises: The processing module is configured to determine a first resource occupied by an indicator channel in a long term evolution LTE system and a second resource occupied by a new radio physical downlink control channel NR PDCCH; wherein the indicator channel includes at least one of the following: a physical control format indicator channel PCFICH; a physical hybrid automatic repeat request indicator channel PHICH; In a case where the second resource conflicts with the first resource, determining a transmission mode of the NR PDCCH; A sending module, configured to send the NR PDCCH according to the sending mode; The sending mode includes: a second sending mode: performing rate matching on the NR PDCCH according to the first resource Among them, when the mapping relationship between the control channel element CCE corresponding to the NR PDCCH and the resource element group REG is a non-interleaved mapping, it is determined that the NR PDCCH is sent through the second sending mode, and the time domain resources occupied by the indication channel are continuous.

35. 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 1 to 15 is implemented.

36. 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 described in any one of claims 16 to 30 is implemented.

37. 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 1 to 15 are implemented.

38. 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 16 to 30 are implemented.

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