Channel reception method, channel transmission method, communication node, and storage medium

Abstract

Disclosed in the present application are a channel reception method, a channel transmission method, a communication node, and a storage medium. The channel reception method comprises: determining a target resource block (RB) on the basis of a mapping mode of a control resource set (CORESET), wherein the target RB occupies a first bandwidth (310); and receiving a physical downlink control channel (PDCCH) on at least part of the target RB (320).

Description

Channel reception, transmission methods, communication nodes, and storage media Technical Field

[0001] This application relates to the field of communication technology, such as a channel receiving and transmitting method, a communication node, and a storage medium. Background Technology

[0002] When multiple terminal devices with different capabilities coexist (e.g., some supporting high bandwidth and others supporting low bandwidth), their control-resource sets (CORESETs) can be configured to occupy multiple control channel elements (CCEs). Some terminal devices use their Physical Downlink Control Channel (PDCCH) to occupy multiple CCEs for broadband transmission, while others use their PDCCHs to occupy a small number of CCEs or a small number of resource element groups (REGs) for narrowband transmission. If these terminal devices share a single CORESET, narrowband transmission cannot coexist well with broadband transmission because CORESET interleaving occurs across the entire CORESET. Summary of the Invention

[0003] This application provides a channel receiving method applied to a first communication node, the method comprising:

[0004] Based on the mapping method of the control resource set CORESET, the target resource block RB is determined, and the target RB occupies the first bandwidth;

[0005] Physical downlink control channel (PDCCH) is received on at least some of the target RBs.

[0006] This application provides a channel transmission method applied to a second communication node, the method comprising:

[0007] Based on the mapping method of the control resource set CORESET, the target resource block RB is determined, and the target RB occupies the first bandwidth;

[0008] Transmit the Physical Downlink Control Channel (PDCCH) on at least some of the target RBs.

[0009] This application provides a communication node, including: a processor; the processor is used to implement the method of any of the above embodiments when executing a computer program.

[0010] This application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the method of any of the above embodiments.

[0011] Further details regarding the above embodiments and other aspects of this application, as well as their implementations, are provided in the accompanying drawings, detailed description, and claims. Attached Figure Description

[0012] Figure 1 is a schematic diagram of a CORESET mapping from REG before interleaving to REG / RB after interleaving in a related technology;

[0013] Figure 2 is a network diagram of a wireless communication system according to an embodiment;

[0014] Figure 3 is a flowchart illustrating a channel receiving method according to an embodiment;

[0015] Figure 4 is a schematic diagram of how REGs before interleaving are mapped to REGs / RBs after interleaving in CORESET, as provided in Example 2;

[0016] Figure 5 is a schematic diagram of the mapping of REG before interleaving to REG / RB after interleaving in CORESET, as provided in Example 4;

[0017] Figure 6 is a schematic diagram of the mapping of REG before interleaving to REG / RB after interleaving in another CORESET provided in Example 4;

[0018] Figure 7 is a schematic diagram of the mapping of REG before interleaving to REG / RB after interleaving in CORESET provided in Example 5;

[0019] Figure 8 is a schematic diagram of the third mapping method, which maps discrete REGs before interleaving in CORESET to continuous RBs.

[0020] Figure 9 is a schematic diagram of another mapping method corresponding to the third mapping method, which maps the discrete REG interleaving before interleaving in CORESET to continuous RB;

[0021] Figure 10 is a schematic flowchart of a channel transmission method provided in one embodiment;

[0022] Figure 11 is a schematic diagram of a channel receiving device according to an embodiment;

[0023] Figure 12 is a schematic diagram of a channel transmission device according to an embodiment;

[0024] Figure 13 is a schematic diagram of the structure of a UE provided in an embodiment;

[0025] Figure 14 is a schematic diagram of the structure of a base station provided in one embodiment. Detailed Implementation

[0026] A CORESET is a frequency domain resource concept in the New Radio (NR) interface of 5G mobile communication technology. It is a collection of physical resources within a specific area of ​​the Downlink Resource Grid, used to carry the PDCCH (Programmable Controller Center). A CORESET typically includes... Each resource block (RB) contains M symbols (where M can be 1, 2, or 3). In other words, each symbol contains the following number of RBs. A symbol contains 12 consecutive Resource Elements (REs) forming a REG, and 6 REGs form a CCE. One REG is equal to one RB. In this application, REGs and RBs are interchangeable.

[0027] A PDCCH occupies one or more consecutive CCEs, and the number of CCEs occupied by the PDCCH is less than or equal to the number of CCEs included in the CORESET. A CCE can be regarded as a resource unit allocated by the PDCCH. A CCE includes discrete or continuous REGs / RBs. The REGs / RBs included in a CCE can be determined by non-interleaved mapping and interleaved mapping.

[0028] Figure 1 is a schematic diagram of mapping REGs before interleaving to REGs / RBs after interleaving in a related technology. As shown in Figure 1, a CORESET includes 18 REGs, numbered REG#0 to REG#17. Every 6 REGs form a CCE, meaning a CORESET includes 3 CCEs, numbered CCE#1 to CCE#3. In non-interleaving mapping, REG#0 maps to RB#0, REG#1 maps to RB#1, and so on, with REG#17 mapping to RB#17. In interleaving mapping, REG bundles are used as units. Figure 1 uses 2 REG bundles as an example, meaning 2 REGs form one REG bundle, and a CORESET includes 18 / 2 = 9 REG bundles. The interleaver has 3 rows and 3 columns, with the interleaver positioned for row-in and column-out. As can be seen from Figure 1, for interleaving mapping, the REGs in each CCE are broken up after interleaving. The REGs before interleaving are only for easy distinction from the REGs / RBs after interleaving. A CORESET containing one or more REGs is equivalent to a CORESET containing one or more pre-interleaved REGs, and is equivalent to a CORESET containing one or more RBs. In some implementations, there may be no concept of pre-interleaved REGs; only the REGs / RBs corresponding to a group in the CORESET are described. The PDCCH transmits directly on the corresponding REGs / RBs. These REGs / RBs are interleaved. For example, in Figure 1, CCE1 contains REGs / RBs (after interleaving) of RB#0, RB#1, RB#6, RB#7, RB#12, and RB#13. CCE2 contains REGs / RBs (after interleaving) of RB#2, RB#3, RB#8, RB#9, RB#14, and RB#15.

[0029] It should be noted that a single PDCCH does not necessarily occupy all the CCEs in the entire CORESET. When a PDCCH occupies only a portion of the CCEs, the CCEs are used in sequence. That is, when a PDCCH occupies one CCE, the RBs corresponding to CCE#1 (i.e., RB blocks numbered 0-5 in Figure 1) are used; when a PDCCH occupies two CCEs, the RBs corresponding to CCE#1 and CCE#2 (i.e., RB blocks numbered 0-11 in Figure 1) are used. In either case, these RB blocks are distributed across a large bandwidth, which is detrimental to reception by terminal devices with limited bandwidth.

[0030] The channel receiving and channel transmitting methods provided in this application can be applied to various wireless communication systems, such as 5th-generation (5G) systems, LTE and 5G hybrid architecture systems, 5G New Radio (NR) systems, and new communication systems emerging in future communication development, such as 6th-generation (6G) systems. Figure 2 is a network diagram of a wireless communication system provided in an embodiment. As shown in Figure 2, the wireless communication system includes a terminal device 110, an access network device 120, and a core network device 130.

[0031] Terminal device 110 can be a device with wireless transceiver capabilities, which can be deployed on land (such as indoors or outdoors, handheld, wearable or vehicle-mounted); on water (such as ships); or in the air (such as airplanes, balloons and satellites). Examples of terminal devices 110 include: passive terminals, user equipment (UE), mobile phones, mobile stations, tablets, laptops, ultra-mobile personal computers (UMPCs), handheld computers, netbooks, personal digital assistants (PDAs), and other network-connected user equipment; virtual reality (VR) terminals, augmented reality (AR) terminals, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical care, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, etc.; IoT nodes in the Internet of Things (IoT); in-vehicle communication devices in the Internet of Vehicles (IoV); entertainment and gaming devices or systems; and GPS devices, etc. The embodiments of this application do not limit the specific technologies or device forms used in the terminal devices. Furthermore, the term "terminal device" can be abbreviated as "terminal."

[0032] Access network equipment 120 is the access device through which terminal equipment 110 wirelessly accesses the wireless communication system. It can be a reader / writer, a base station, an evolved NodeB (eNB or eNodeB) in Long Term Evolution Advanced (LTE), a transmission reception point (TRP), a base station in a 5G mobile communication system or a next-generation NodeB (gNB), a base station in a 6G mobile communication system, a base station in a future mobile communication system, or an access node in a Wireless Fidelity (WiFi) system. Base stations can include various macro base stations, micro base stations, femtobase stations, wireless extensions, routers, WiFi devices, or various network-side devices such as primary cells and secondary cells, as well as location management function (LMF) devices. It can also be a module or unit that performs some of the functions of a base station; for example, it can be a central unit (CU) or a distributed unit (DU). The embodiments of this application do not limit the specific technology or equipment form used in the access network equipment. In addition, the access network equipment can be referred to as a base station.

[0033] Core network equipment 130 may include access and mobility management network elements and session management network elements. For example, terminal equipment 110 can access the core network through access network equipment 120 to achieve data transmission.

[0034] This application provides a channel receiving method, a channel transmitting method, a communication node, and a storage medium that can operate in the above-mentioned wireless communication system. It enables the transmission of PDCCH with a small bandwidth in a large bandwidth CORESET, thereby improving the system's compatibility.

[0035] The following describes the channel receiving method, the channel transmitting method, the communication node, and their technical effects.

[0036] Figure 3 is a schematic flowchart of a channel receiving method according to an embodiment. As shown in Figure 3, the method provided in this embodiment is applicable to a first communication node (also referred to as a first communication node device, or a first node, or a first device). For example, the first communication node can be a terminal device. The method includes the following steps.

[0037] S310. Based on the mapping method of the control resource set CORESET, determine the target resource block RB, and the target RB occupies the first bandwidth.

[0038] The target RB is the actual frequency domain resource that the PDCCH may correspond to. That is, the RBs corresponding to the CCE / REG occupied by the PDCCH are a subset of the target RBs. The target RB occupies the first bandwidth. Here, the first bandwidth can be a small bandwidth; or the number of RBs included in the first bandwidth is a first quantity, which is a predefined quantity or N_RB_min; N_RB_min is the number of RBs corresponding to the minimum bandwidth of the system, or the number of RBs corresponding to the bandwidth supported by the terminal device (such as the minimum bandwidth), or the number of RBs corresponding to the bandwidth supported by the first type of terminal device, or the number of RBs corresponding to the maximum bandwidth supported by the first type of terminal device, or the number of RBs corresponding to the maximum PDCCH bandwidth supported by the first type of terminal device, or a predefined value.

[0039] In this way, when the first communication node receives the PDCCH, it can only detect the target RB, thereby realizing the transmission of the PDCCH with a small bandwidth in a large bandwidth CORESET, and improving the system compatibility.

[0040] In one embodiment, the target RB can be a continuous RB or a discontinuous RB.

[0041] In one embodiment, the mapping method of CORESET may include at least one of the following: a first mapping method, a second mapping method, and a third mapping method.

[0042] For the first mapping method, REGs within CORESET are not interleaved.

[0043] Specifically, CORESET uses the first mapping method when at least one of the following conditions is met:

[0044] Condition 1: The first communication node is at least one of the following: Low Power Wide Area (LPWA) terminal device, lightweight terminal device, and mobile terminal device.

[0045] Condition 2: CORESET is applicable to at least one of the following: LPWA terminal devices, lightweight terminal devices, and mobile terminal devices.

[0046] Condition 3: The signaling indicates that the mapping method of CORESET is the first mapping method, and the signaling is at least one of the following: Master Information Block (MIB) signaling, System Information Block (SIB) signaling, Radio Resource Control (RRC) signaling, signaling in the Physical Broadcast Channel (PBCH), Secondary Synchronization Signal (SSS), Synchronization Signal Block (SSB) signaling, and Primary Synchronization Signal (PSS) signaling.

[0047] Condition 4: The number of REG / RBs occupied by PDCCH is less than or equal to the first quantity.

[0048] Condition 5: The predefined mapping method for CORESET is the first mapping method.

[0049] The second mapping method involves grouping resources within a CORESET and interleaving between and / or within groups. The second mapping method will be explained in detail below with different examples.

[0050] Example 1: The target RB corresponds to one or more groups of CORESET. REGs within each group of CORESET are consecutive.

[0051] In some embodiments, a low-capability (supporting low bandwidth or Category 1 terminals) User Equipment (UE) transmits PDCCH in one packet, while a high-capability (supporting high bandwidth) UE can transmit PDCCH in multiple packets.

[0052] In some embodiments, N_RB_min is determined based on the frequency range (FR) type. That is, different FR types may correspond to different N_RB_min values. For example, the N_RB_min value for FR1 is greater than the N_RB_min value for FR2.

[0053] In some embodiments, the first bandwidth is determined according to the FR type. That is, different FR types may correspond to different first bandwidths. For example, the first bandwidth value of FR1 is greater than the first bandwidth value of FR2.

[0054] In some embodiments, the predefined value is determined based on the FR type. That is, different FR types may correspond to different predefined values. For example, the predefined value of FR1 is greater than the predefined value of FR2.

[0055] In some embodiments, N_RB_min, the first bandwidth, or a predefined value, is indicated by SSB, MIB, PBCH, or SIB. In some embodiments, N_RB_min, the first bandwidth, or a predefined value, has two values / granularities, one of which is indicated by SSB, MIB, PBCH, or SIB.

[0056] In a first possible implementation, the target RB corresponds to a group of CORESET. REGs within each group of CORESET are interleaved, but not between groups; or, REGs within each group of CORESET are not interleaved, but interleaved between groups; or, REGs within each group of CORESET are interleaved, but interleaved between groups.

[0057] Since the target RB corresponds to only one packet in the CORESET, and the REGs within a packet constitute a continuous bandwidth, regardless of whether intra- or inter-group interleaving occurs within the CORESET, the mapped RB of that packet will still be a continuous bandwidth and will not become a large-bandwidth signal. This allows the first communication node to acquire the PDCCH by receiving only a small-bandwidth signal. Inter-group interleaving refers to interleaving mapping on a group-by-group basis. Intra-group interleaving refers to interleaving mapping between REGs within the same group.

[0058] In a second possible implementation, the target RB corresponds to multiple groups of CORESET. REGs within a group of CORESET are interleaved, but those between groups are not interleaved.

[0059] Since the target RB corresponds to multiple packets of CORESET, and the REG within a packet is a continuous bandwidth, when there is no interleaving between CORESET groups, the resource positions between different groups will not change. This ensures that the RB after the packet mapping corresponding to the target RB is still a continuous bandwidth and will not become a large bandwidth signal. This allows the first communication node to acquire PDCCH by receiving only a small bandwidth signal.

[0060] In Example 1, the CORESET can be grouped using any of the following methods:

[0061] Grouping Method 1: CORESET groups devices according to N_RB_min, where N_RB_min is the number of RBs corresponding to the minimum system bandwidth, or the number of RBs corresponding to the bandwidth supported by the terminal device, or the number of RBs corresponding to the bandwidth supported by the first type of terminal device, or the number of RBs corresponding to the maximum bandwidth supported by the first type of terminal device, or the number of RBs corresponding to the maximum PDCCH bandwidth supported by the first type of terminal device, or a predefined value. The terminal device can be at least one of Low Power Wide Area (LPWA) terminal devices, lightweight terminal devices, and mobile terminal devices. The first type of terminal is at least one of Low Power Wide Area (LPWA) terminal devices, lightweight terminal devices, low-bandwidth terminals, low-capability terminals, reduced-capability (REDCAP) terminals, and low-power terminals. It can be understood that the first type of terminal receives data on low bandwidth.

[0062] When CORESET includes When there are REGs, any of the following characteristics must be satisfied:

[0063] for If the number of REGs in each group is divisible by N_RB_min, then the number of REGs in each group is N_RB_min.

[0064] for For cases where N_RB_min is not divisible, CORESET is divided into A+1 groups. The number of REGs in group A is N_RB_min, and the number of REGs in group 1 is...

[0065] for For cases where N_RB_min is not divisible, CORESET is divided into A groups. The number of REGs in groups B is N_RB_min, and the number of REGs in the remaining groups A and B is N_RB_min-1. In some embodiments, groups 1 to B contain N_RB_min REGs, and groups B+1 to A contain N_RB_min-1 REGs.

[0066] For example, CORESET includes 99 REGs. Then it is divided into There are 8 × 13 - 99 = 5 groups. Therefore, 5 out of the 8 groups contain 12 REGs each, and the remaining 3 out of the 8 groups contain 13 REGs each.

[0067] Grouping Method 2: CORESET groups according to the number of REGs included in the minimum aggregation level.

[0068] Grouping Method 3: CORESET groups according to the number of REGs included in the minimum divisor of the aggregation level.

[0069] Grouping Method 4: CORESET groups according to the number of REGs included in the largest possible aggregation level.

[0070] For grouping methods 2, 3, and 4, when the total number of REGs in the CORESET is not divisible by the target number of REGs in each group, the grouping method in grouping method 1 can also be used for grouping methods 2, 3, and 4. The only difference is the target number of REGs in each group. In grouping method 1, the target number of REGs in each group is N_RB_min. In grouping method 2, the target number of REGs in each group is the number of REGs included in the minimum aggregation level. In grouping method 3, the target number of REGs in each group is the number of REGs included in the minimum divisor of the minimum aggregation level. In grouping method 4, the target number of REGs in each group is the number of REGs included in the maximum divisor of the minimum aggregation level.

[0071] In one embodiment, when CORESET groups are interleaved, all groups may be interleaved, or some groups may be interleaved while others may not be interleaved.

[0072] In one embodiment, when interleaving occurs within a group of CORESET, interleaving can be performed at the granularity of REG, REG bundle, or RB.

[0073] In one embodiment, when both intra-group and inter-group interleaving of CORESET are performed, the interleaving patterns of intra-group interleaving and inter-group interleaving are different.

[0074] In one embodiment, when both intra-group and inter-group interleaving of CORESET are performed, the interleaving pattern of intra-group interleaving and inter-group interleaving is the same.

[0075] In one embodiment, the interleaving method in Example 1 can be at least one of the following: row-in list interleaver / include row-out interleaver; predefined interleaving rules. For example, when the interleaving method in Example 1 includes a row-in list interleaver and predefined interleaving rules, interleaving can be performed first according to the predefined interleaving rules, and then the row-in list interleaver can be used for interleaving.

[0076] Optionally, the number of rows in the interleaver is predefined or indicated by signaling, while the number of columns is calculated. For example, the number of rows in the interleaver can be 2, 3, or a multiple of 2 or 3. Alternatively, the number of columns in the interleaver can be predefined or indicated by signaling, while the number of rows is calculated.

[0077] Optionally, the predefined interleaving rules can be used to perform interleaving according to a predefined table. Alternatively, the predefined interleaving rules can be used to determine the interleaved indices according to a predefined table.

[0078] Optionally, different interleaving methods can be used under different conditions. For example, when the number of groups is less than Y (Y is a positive integer less than or equal to 10), a predefined interleaving rule is used; otherwise, an in-line list interleaver is used for interleaving.

[0079] Optionally, the interleaving method can be selected based on the signaling instructions.

[0080] In some embodiments, each CCE is a packet, and the PDCCH is transmitted within a packet, with intra-packet interleaving and / or inter-packet interleaving. That is, each CCE contains a continuous frequency domain resource, or a continuous REG / RB segment. In some embodiments, each CCE is a packet, and the PDCCH is transmitted within one or more packets. In some embodiments, when a first condition is met, intra-packet interleaving is used when the PDCCH is transmitted within multiple packets, but inter-packet interleaving is not used. When the first condition is not met, inter-packet interleaving and / or intra-packet interleaving can be used when the PDCCH is transmitted within multiple packets. The first condition can be at least one of conditions 1-5 mentioned in the foregoing embodiments.

[0081] In some embodiments, the transmission frequency domain resources (REG / RB) of the PDCCH are determined according to the interleaving method in this application.

[0082] Example 2: The target RB corresponds to a specific group of CORESET.

[0083] In Example 2, the CORESET contains M symbols, and the number of REGs within the CORESET is a multiple of M. In one embodiment, the number of REG bundles is also a multiple of M.

[0084] In one embodiment, any of the following features are satisfied: the number of REGs or REG bundles included in a specific group is greater than the number of REGs or REG bundles included in other groups; the REGs corresponding to the specific group are located in the middle frequency domain of the frequency domain where the CORESET is located; and the number of REGs or REG bundles included in other groups is the same except for the specific group.

[0085] Optionally, resources within a CORESET can be divided into 9 groups based on REGs or REG bundles, with each group containing at least one REG or REG bundle. The specific group is the 5th group out of these 9. For example, the 5th group must contain at least N_RB_min REGs or REG bundles; that is, the number of REGs in the 5th group must be greater than or equal to N_RB_min. The number of REGs in the 5th group is the minimum value greater than or equal to N_RB_min that makes the remaining number of REGs in the CORESET divisible by 8*M. K is the number of REGs contained in a specific group.

[0086] Optionally, the CORESET can be divided into 9 groups on average. If the CORESET cannot be divided into 9 groups on average, you can refer to the method for grouping the CORESET in Example 1 above, which will not be repeated here for the sake of simplicity.

[0087] Figure 4 is a schematic diagram of the mapping of REGs before interleaving to REGs / RBs after interleaving in a CORESET provided in Example 2. As shown in Figure 4, when the CORESET is divided into 9 groups, the interleaver can be listed in a 3×3 row-in column, thus ensuring that the position of the 5th group remains unchanged before and after interleaving. Small-bandwidth PDCCHs can be transmitted on resources in the 5th group and remain on contiguous resources after interleaving.

[0088] Example 3: CORESET is grouped together, and the interleaver function is f(x).

[0089] In Example 3, the interleaver function is f(x), x = 0, 1, 2, ..., P-1. P is the number of REGs included in the CORESET. In some embodiments, P is the number of REG bundles in the CORESET.

[0090] In one embodiment, when x ≤ N1 or x ≥ N2, f(x) = x; N1 and N2 are the numbers of the pre-interleaving REG bundles included in the CORESET, and N1 < N2. In another embodiment, when x ≤ N1 or x ≥ N2, f(x) = x; N1 and N2 are the numbers of the pre-interleaving REG bundles included in the CORESET, and N1 < N2.

[0091] The REG / REG bundle number before interleaving corresponding to the target RB satisfies at least one of the following: the REG number corresponding to the target RB is less than or equal to N1; the REG / REG bundle number before interleaving corresponding to the target RB is greater than or equal to N2; or the REG / REG bundle number before interleaving corresponding to the target RB is greater than N1 and less than N2.

[0092] In one embodiment, when N1 < x < N2, interleaving can be performed according to a predefined table or row-listed interleaver.

[0093] Optionally, N1 and N2 are multiples of the number of symbols included in CORESET.

[0094] Optionally, N1 and N2 are multiples of the number of REG bundles included in CORESET.

[0095] Optionally, N1 and N2 are the least common multiple or the greatest common divisor of the number of symbols included in CORESET and the number of REG bundles included in CORESET.

[0096] Example 4: CORESET includes the first frequency domain position, and the target RB corresponds to the first frequency domain position.

[0097] In one embodiment, the frequency domain start point (lowest frequency point) of the first frequency domain location is indicated by an offset value that indicates the offset of the frequency domain start point of the first frequency domain location relative to one of the following: the start point location of CORESET, the frequency domain start point location of SSB, Point A, and the frequency domain start point location of the Initial Bandwidth Part (Initial BWP).

[0098] In one embodiment, the first frequency domain location is predefined or determined according to signaling instructions.

[0099] In one embodiment, the starting point of the first frequency domain position is defaulted to the starting point of CORESET.

[0100] Optionally, the first frequency domain bandwidth can be predefined or indicated by signaling. For example, the first frequency domain bandwidth is N_RB_min, where N_RB_min is the number of RBs corresponding to the minimum bandwidth of the system, or the number of RBs corresponding to the bandwidth supported by the terminal device, or a predefined value.

[0101] In one embodiment, the mapping from REG to RB before interleaving at a first frequency domain location undergoes Type I interleaving, while the mapping from REG to RB before interleaving at other frequency domain locations undergoes Type II interleaving or no interleaving. It should be noted that in some embodiments, the REG to RB mapping of CORESET described in this application has the same RB distribution effect as the REG to RB mapping before interleaving.

[0102] In one embodiment, the REG-to-RB mappings of the first frequency domain location and other frequency domain locations are all interleaved using type 1 interleaving.

[0103] In Example 4, Type 1 interleaving is interleaving according to Type 1 interleaving scheme, and Type 2 interleaving is interleaving according to Type 2 interleaving scheme.

[0104] The first type of interleaving scheme can be as follows: the first frequency domain position contains a total of Rf REGs, and the number of REG bundles is Rf / L. That is, one REG bundle contains L REGs. The number of interleaver lines is R, where R is predefined or indicated by signaling.

[0105] For a REG bundle i, it contains REG{i*L,i*L+1,...,i*L+L-1}, where i = 0, 1,...,Rf / L-1. CCE j contains REG bundles{f(6*j / L),f(6*j / L+1),...,f(6*j / L+6 / L-1)}, where f(.) is the interleaving function. f(x) = (rC+c+n) shift )mod(Rf / L) x=cR+1 r=0,1,...,R-1 c=0,1,...,C-1 C=Rf / (LR)

[0106] Where, n shift These are predefined or signaling-indicated features used to enhance fading resistance, interference randomization, and network configuration flexibility.

[0107] The REG bundle mentioned above in the CCE refers to the REG bundle index after interleaving.

[0108] The second type of interleaving scheme can be: a predefined interleaving pattern, or a two-row row-column interleaver.

[0109] Figure 5 is a schematic diagram of the mapping of REGs before interleaving to REGs / RBs after interleaving in a CORESET, as provided in Example 4. As shown in Figure 5, the first frequency domain position remains unchanged before and after interleaving. Small-bandwidth PDCCHs can be transmitted at the first frequency domain position. Furthermore, this application does not limit the position of the first frequency domain position in the CORESET.

[0110] It should be noted that in CORESET, the REGs after interleaving are arranged in the order of time domain first, then frequency domain. The REGs and CCEs before interleaving are sequential; that is, REGs 0-5 before interleaving correspond to CCE1, REGs 6-11 correspond to CCE2, and so on. When mapping CCEs to PDCCH, the mapping is performed according to the order of the CCEs. For example, if PDCCH occupies one CCE, it needs to occupy all the REGs of that CCE; it cannot be discretely mapped to multiple REGs.

[0111] In one embodiment, the first frequency domain location includes an integer number of CCEs.

[0112] In one embodiment, the CCE mapping order in Example 4 needs to be changed. For example, the CCEs in the first frequency domain position are numbered sequentially within the frequency domain. After the CCEs in the first frequency domain position are numbered, the CCEs in other frequency domain positions within the CORESET, excluding the first frequency domain position, continue to be numbered sequentially within the frequency domain.

[0113] In one embodiment, the CCE mapping order in Example 4 needs to be changed. For example, the CCEs in the first frequency domain position are numbered first in time-domain order, then in frequency-domain order. After the CCEs in the first frequency domain position are numbered, the CCEs in other frequency domain positions within the CORESET, excluding the first frequency domain position, continue to be numbered in time-domain order, then in frequency-domain order. In some embodiments, REG here refers to the REG after interleaving. In some embodiments, REG here refers to the REG before interleaving.

[0114] In one embodiment, the REG mapping order in Example 4 needs to be changed. For example, REGs in the first frequency domain position are numbered in frequency domain order first. After the REGs in the first frequency domain position are numbered, REGs in other frequency domain positions within the CORESET, excluding the first frequency domain position, continue to be numbered in frequency domain order.

[0115] In one embodiment, the REG mapping order in Example 4 needs to be changed. For example, REGs in the first frequency domain position are numbered first in time-domain order, then in frequency-domain order. After the REGs in the first frequency domain position are numbered, REGs in other frequency domain positions within the CORESET, excluding the first frequency domain position, continue to be numbered in time-domain order, then in frequency-domain order. In some embodiments, REG here refers to the REG after interleaving. In some embodiments, REG here refers to the REG before interleaving.

[0116] Figure 6 is a schematic diagram of the mapping of REGs before interleaving to REGs / RBs after interleaving in another CORESET provided in Example 4. As shown in Figure 6(a), each cell represents a CCE, and the first frequency domain position contains one CCE, numbered 0; the other CCEs in the CORESET are then mapped, numbered 1-6. In Figure 6(b), each cell represents a REG, and the first frequency domain position contains 12 REGs, numbered 0-11. The other REGs in the CORESET, excluding the first frequency domain position, are then numbered 12-17. Alternatively, in Figure 6(b), each cell represents a REG, and the first frequency domain position contains 12 REGs, numbered 0-11, corresponding to CCE#1 and CCE#2. The other REGs in the CORESET, excluding the first frequency domain position, are then numbered 12-17, corresponding to CCE#3.

[0117] Example 5: Repetition and interweaving.

[0118] Figure 7 is a schematic diagram of the mapping of REGs before interleaving to REGs / RBs after interleaving in a CORESET provided in Example 5. As shown in Figure 7, each cell represents a REG, and six REGs form a group. Six REGs also constitute a CCE. In the figure, CCE#1, CCE#2, and CCE#3 map to three repetitions of the same PDCCH / Downlink Control Information (DCI). Interleaving is performed within each group (CCE).

[0119] In one embodiment, a CORESET contains multiple REGs, and a single transmission of a PDCCH / DCI occupies a portion of the REGs in the CORESET.

[0120] A CORESET consists of M REGs, and the PDCCH occupies N REGs. The CORESET is divided into C groups, and the PDCCH is transmitted C times within a CORESET. When C=1, there is no repeated transmission. Each group corresponds to one repeated transmission of the PDCCH.

[0121] Optionally, C repeated transfers are mapped to consecutive resources.

[0122] Optionally, if there are still empty REGs in CORESET after C repeated transmissions, the empty REGs are not mapped. Alternatively, if there are still empty REGs in CORESET after C repeated transmissions, the bits of PDCCH / DCI are mapped sequentially to the remaining REGs until there are no empty REGs in CORESET.

[0123] Optionally, the redundant versions (RVs) transmitted between multiple repeated transmissions can be different. For example, repeated transmissions can be performed in the order of RV0, RV2, RV1, RV3. Alternatively, the RV versions transmitted between multiple repeated transmissions can be the same.

[0124] In one embodiment, each N REG occupied by a PDCCH / DCI is called a group. The REGs within a group are interleaved and mapped onto the interleaved REGs. The PDCCH / DCI is transmitted on the interleaved REGs.

[0125] Optionally, each group can use the same interleaving pattern. Alternatively, multiple interleaving patterns can exist, and different groups can use different interleaving patterns. For example, the first group uses interleaving pattern 1, the second group uses interleaving pattern 2, the third group uses interleaving pattern 1, the fourth group uses interleaving pattern 4, and so on. Or, for another example, the first group uses interleaving pattern 1, the second group does not interleave, the third group uses interleaving pattern 1, the fourth group does not interleave, and so on.

[0126] In one embodiment, the interleaving method can be as described in the example above, and will not be repeated here for the sake of brevity.

[0127] In this way, a low-bandwidth UE can receive only one transmission, while a high-bandwidth UE can receive multiple repeated transmissions, thus improving the performance of high-bandwidth UEs while satisfying the multiplexing requirements of both low-bandwidth and high-bandwidth UEs.

[0128] Additionally, Example 5 groups the data according to the number of REGs occupied by the PDCCH / DCI. In some embodiments, grouping can also be based on CCE, CCE group, aggregation level, maximum REG bundle size, minimum mother code length, maximum mother code length, and other grouping parameters described in other examples. After grouping, each group transmits one transmission of one PDCCH / DCI.

[0129] The third mapping method involves interleaving the discrete REGs within the CORESET before interleaving and mapping them to continuous RBs. The target RB, as the interleaved RB, is continuous, and the target RB corresponds to the discrete REGs within the CORESET before interleaving.

[0130] Figure 8 is a schematic diagram of the third mapping method, which maps discrete REGs before interleaving in a CORESET to continuous RBs. As shown in Figure 8, the PDCCH occupies a continuous segment of resources on the RB after interleaving. According to the mapping rules, the amount of REGs before interleaving on its corresponding CCE is deduced. That is to say, a PDCCH may occupy multiple CCEs, and each CCE occupies a portion of the REGs.

[0131] For example, if PDCCH or DCI is transmitted on RB 6-11 after interleaving, it occupies REG#2, 3, 8, 9, 14, and 15 in the CORESET before interleaving. As another example, if PDCCH or DCI is transmitted on RB 0-5 after interleaving, it occupies REG#0, 1, 6, 7, 12, and 13 in the CORESET before interleaving.

[0132] It should be noted that using this data mapping rule (third mapping method) makes the definition of aggregation level unsuitable for this scheme. Aggregation level is associated with CCE; aggregation level 1 represents one CCE, specifically CCE#1; aggregation level 2 represents two sequentially arranged CCEs, namely CCE#1 and CCE#2. However, in the third mapping method, CCEs are not sequentially assigned; therefore, aggregation level and CCE do not correspond.

[0133] Alternatively, this data mapping rule (third mapping method) can be achieved by redefining the aggregation level. The aggregation level can be redefined as the number of REG / RBs after interleaving occupied by the PDCCH.

[0134] In some embodiments, six consecutive REGs / RBs after interleaving are the same CCE. That is, the REGs before interleaving corresponding to a CCE are discrete, and the REGs after interleaving are continuous. For example, Figure 9 is a schematic diagram of another mapping method corresponding to the third mapping method, which maps discrete REGs before interleaving in CORESET to continuous RBs.

[0135] In one embodiment, when the PDCCH is not mapped to CCE discontinuously, the aggregation level is determined according to the number of REGs occupied by the PDCCH or DCI. For example, if the number of REGs occupied by the PDCCH is A, then the aggregation level is A / 6.

[0136] In one embodiment, PDCCH or DCI must contain REG 0 in CORESET.

[0137] In one embodiment, the PDCCH or DCI must contain the interleaved RB 0.

[0138] In one embodiment, a CORESET includes at least one sub-CORESET, and a target RB corresponds to one or more sub-CORESETs; REGs within a sub-CORESET are interleaved within the sub-CORESET, and REGs within a sub-CORESET are not interleaved with REGs in other sub-CORESETs; or, REGs within a sub-CORESET are interleaved or not interleaved within the sub-CORESET, and multiple sub-CORESETs are interleaved.

[0139] In one embodiment, a CORESET includes at least one sub-CORESET, which contains a total of Rf REGs, and the number of REG bundles is L. That is, one REG bundle contains L REGs. The number of interleaver lines is R, where R is predefined or signaled.

[0140] For a REG bundle i, it contains REG{i*L,i*L+1,...,i*L+L-1}, where i = 0, 1,...,Rf / L-1. CCE j contains REG bundles{f(6*j / L),f(6*j / L+1),...,f(6*j / L+6 / L-1)}, where f(.) is the interleaving function. f(x) = (rC+c+n) shift )mod(Rf / L) x=cR+1 r=0,1,...,R-1 c=0,1,...,C-1 C=Rf / (LR)

[0141] Where, n shift These are predefined or signaling-indicated features used to enhance fading resistance, interference randomization, and network configuration flexibility.

[0142] In other words, each sub-CORESET is interwoven according to the above content.

[0143] S320. Receive the Physical Downlink Control Channel (PDCCH) on at least a portion of the target RBs.

[0144] In one embodiment, the first communication node may receive the PDCCH on some of the target RBs. Alternatively, the first communication node may receive the PDCCH on all of the target RBs.

[0145] In one embodiment, the channel reception method provided in this application only takes effect when at least one of the following conditions is met; that is, the channel reception method provided in this application is executed only when at least one of the following conditions is met, otherwise related technologies are used. Alternatively, the first type of interleaving method is used when at least one of the following conditions is met, otherwise the interleaving method in related technologies is used:

[0146] CORESET is configured for at least one of the following: LPWA terminal devices, lightweight terminal devices, and mobile terminal devices;

[0147] The first frequency domain position of CORESET is configured for at least one of the LPWA terminal device, lightweight terminal device, and mobile terminal device;

[0148] The aggregation level of PDCCH is greater than 1;

[0149] The number of CCEs in PDCCH is greater than 1;

[0150] The number of REG bundles in PDCCH is less than 6;

[0151] The number of REG bundles in PDCCH is greater than or equal to 6.

[0152] Figure 10 is a flowchart illustrating a channel transmission method according to an embodiment. As shown in Figure 10, the method provided in this embodiment is applicable to a second communication node (also referred to as a second communication node device, a second node, or a second device). For example, the second communication node can be an access network device. The method includes the following steps.

[0153] S910. Based on the mapping method of the control resource set CORESET, determine the target resource block RB, and the target RB occupies the first bandwidth.

[0154] The target RB is the actual frequency domain resource that the PDCCH may correspond to. That is, the RBs corresponding to the CCE / REG occupied by the PDCCH are a subset of the target RBs. The target RB occupies the first bandwidth. Here, the first bandwidth can be a small bandwidth; or the number of RBs included in the first bandwidth is a first quantity, which is a predefined quantity or N_RB_min; N_RB_min is the number of RBs corresponding to the minimum bandwidth of the system, or the number of RBs corresponding to the bandwidth supported by the terminal device (such as the minimum bandwidth), or the number of RBs corresponding to the bandwidth supported by the first type of terminal device, or the number of RBs corresponding to the maximum bandwidth supported by the first type of terminal device, or the number of RBs corresponding to the maximum PDCCH bandwidth supported by the first type of terminal device, or a predefined value.

[0155] In one embodiment, the target RB can be a continuous RB or a discontinuous RB.

[0156] In one embodiment, the mapping method of CORESET may include at least one of the following: a first mapping method, a second mapping method, and a third mapping method.

[0157] In one embodiment, the mapping mode of CORESET is a first mapping mode when at least one of the following conditions is met, wherein the first mapping mode indicates that the mapping from resource element group REG to RB within CORESET is not interleaved:

[0158] The first communication node is at least one of a low-power wide-area LPWA terminal device, a lightweight terminal device, and a mobile terminal device;

[0159] CORESET is applicable to at least one of the following: LPWA terminal devices, lightweight terminal devices, and mobile terminal devices;

[0160] The signaling indicates that the mapping method of CORESET is the first mapping method, and the signaling is at least one of the following: main information block (MIB) signaling, system information block (SIB) signaling, radio resource control (RRC) signaling, signaling in physical broadcast channel (PBCH), secondary synchronization signal (SSS) signaling, synchronization signal block (SSB) signaling, and primary synchronization signal (PSS) signaling.

[0161] The number of RBs occupied by PDCCH is less than or equal to the first quantity;

[0162] The predefined mapping method for CORESET is the first mapping method.

[0163] In one embodiment, the mapping method of CORESET is a second mapping method, which includes grouping CORESET and interleaving between groups and / or within groups of CORESET, wherein REGs in each group of CORESET are continuous.

[0164] In one embodiment, the target RB corresponds to a group of CORESET;

[0165] In CORESET, REGs within each group are interleaved, but not between groups; or...

[0166] In CORESET, REGs within each group are not interleaved, but those between groups are interleaved; or...

[0167] CORESET performs interleaving of REGs within each group and interleaving between groups.

[0168] In one embodiment, the target RB corresponds to multiple groups of CORESET; REGs within a group of CORESET are interleaved, but not between groups.

[0169] In one embodiment, CORESET is grouped according to N_RB_min, where N_RB_min is the number of RBs corresponding to the minimum bandwidth of the system, or the number of RBs corresponding to the bandwidth supported by the terminal device, or the number of RBs corresponding to the bandwidth supported by the first type of terminal device, or the number of RBs corresponding to the maximum bandwidth supported by the first type of terminal device, or the number of RBs corresponding to the maximum PDCCH bandwidth supported by the first type of terminal device, or a predefined value; or...

[0170] CORESET groups REGs according to the number of REGs included in the minimum aggregation level; or,

[0171] CORESET groups REGs according to the number of REGs included in the smallest divisor of the aggregation level; or...

[0172] CORESET groups REGs according to the largest approximation of the aggregation level.

[0173] In one embodiment, when CORESET is grouped according to N_RB_min, CORESET includes When there are REGs, any of the following characteristics must be satisfied:

[0174] for If the number of REGs in each group is divisible by N_RB_min, then the number of REGs in each group is N_RB_min.

[0175] for For cases where N_RB_min is not divisible, CORESET is divided into A+1 groups. The number of REGs in group A is N_RB_min, and the number of REGs in group 1 is...

[0176] for For cases where N_RB_min is not divisible, CORESET is divided into A groups. The number of REGs in groups B is N_RB_min, and the number of REGs in the remaining groups A and B is N_RB_min-1.

[0177] In one embodiment, the target RB corresponds to a specific group of CORESET.

[0178] In one embodiment, any of the following features are satisfied:

[0179] A specific group contains more REGs or resource element bundles than other groups contain more REGs or REG bundles.

[0180] The REG corresponding to a specific group is located in the middle frequency domain of the frequency domain where CORESET is located;

[0181] Except for certain groups, other groups include the same number of REGs or REG bundles.

[0182] In one embodiment, the interleaver function is f(x), x = 0, 1, 2, ..., P-1; P is the number of REGs included in CORESET;

[0183] When x≤N1 or x≥N2, f(x)=x; N1 and N2 are the numbers of the REGs before interleaving included in CORESET, N1<N2.

[0184] In one embodiment, CORESET includes a first frequency domain position, and the target RB corresponds to the first frequency domain position.

[0185] In one embodiment, the REG-to-RB mapping before interleaving at the first frequency domain location is performed by first type of interleaving, while the REG-to-RB mapping before interleaving at other frequency domain locations is performed by second type of interleaving or is not interleaved.

[0186] In one embodiment, the frequency domain start point of the first frequency domain location is indicated by an offset value that indicates the offset of the frequency domain start point of the first frequency domain location relative to one of the following: the start point location of CORESET, the frequency domain start point location of SSB, Point A, or the frequency domain start point location of the Initial Bandwidth Part (Initial BWP).

[0187] In one embodiment, a CORESET includes M REGs, a PDCCH occupies N REGs, and the CORESET is divided into C groups. Within a CORESET, the PDCCH is transmitted C times, and each CORESET group includes one repeated transmission of the PDCCH.

[0188] In one embodiment, the mapping method of CORESET is a third mapping method, which includes mapping the discrete pre-interleaving REGs in CORESET to continuous RBs; the target RB corresponds to the discrete pre-interleaving REGs in CORESET.

[0189] In one embodiment, a CORESET includes at least one sub-CORESET, and a target RB corresponds to one or more sub-CORESETs;

[0190] REGs within a sub-CORESET are interleaved within the sub-CORESET, but REGs within a sub-CORESET are not interleaved with REGs within other sub-CORESETs; or, REGs within a sub-CORESET may or may not be interleaved within the sub-CORESET, and may be interleaved between multiple sub-CORESETs.

[0191] S920, Transmit the Physical Downlink Control Channel (PDCCH) on at least some of the target RBs.

[0192] In one embodiment, the second communication node may transmit the PDCCH on some of the target RBs. Alternatively, the second communication node may transmit the PDCCH on all target RBs.

[0193] In one embodiment, the channel transmission method provided in this application only takes effect when at least one of the following conditions is met; that is, the channel transmission method provided in this application is executed only when at least one of the following conditions is met, otherwise related technologies are used. Alternatively, a first type of interleaving is used when at least one of the following conditions is met, otherwise a second type of interleaving is used:

[0194] CORESET is configured for at least one of the following: LPWA terminal devices, lightweight terminal devices, and mobile terminal devices;

[0195] The first frequency domain position of CORESET is configured for at least one of the LPWA terminal device, lightweight terminal device, and mobile terminal device;

[0196] The aggregation level of PDCCH is greater than 1;

[0197] The number of CCEs in PDCCH is greater than 1;

[0198] The number of REG bundles in PDCCH is less than 6;

[0199] The number of REG bundles in PDCCH is greater than or equal to 6.

[0200] In some embodiments, the second type of interleaving is a method of determining the REG by full-bandwidth interleaving within the CORESET. Alternatively, the second type of interleaving is the method shown in Figure 1. The first type of interleaving is other methods described in this application.

[0201] In some embodiments, the first type of interleaving and the second type of interleaving simply describe two different interleaving methods.

[0202] Figure 11 is a schematic diagram of a channel receiving device provided in an embodiment. The device can be configured in a first communication node. As shown in Figure 11, the device includes a first mapping module 1001 and a first communication module 1002.

[0203] The first mapping module 1001 is configured to determine the target resource block RB according to the mapping method of the control resource set CORESET, and the target RB occupies the first bandwidth;

[0204] The first communication module 1002 is configured to receive the physical downlink control channel (PDCCH) on at least a portion of the target RBs.

[0205] The channel receiving device provided in this embodiment is for implementing the channel receiving method shown in Figure 3. The implementation principle and technical effects of the channel receiving device provided in this embodiment are similar to those of the above embodiments, and will not be repeated here.

[0206] In one embodiment, the number of RBs included in the first bandwidth is a first quantity, which is a predefined quantity or N_RB_min;

[0207] N_RB_min is the number of RBs corresponding to the minimum bandwidth of the system, or the number of RBs corresponding to the bandwidth supported by the terminal device, or the number of RBs corresponding to the bandwidth supported by the first type of terminal device, or the number of RBs corresponding to the maximum bandwidth supported by the first type of terminal device, or the number of RBs corresponding to the maximum PDCCH bandwidth supported by the first type of terminal device, or a predefined value.

[0208] In one embodiment, the mapping method of CORESET is a first mapping method when at least one of the following conditions is met, wherein the first mapping method includes not interleaving the resource element group REG within CORESET:

[0209] The first communication node is at least one of a low-power wide-area LPWA terminal device, a lightweight terminal device, and a mobile terminal device;

[0210] CORESET is applicable to at least one of the following: LPWA terminal devices, lightweight terminal devices, and mobile terminal devices;

[0211] The signaling indicates that the mapping method of CORESET is the first mapping method, and the signaling is at least one of the following: main information block (MIB) signaling, system information block (SIB) signaling, radio resource control (RRC) signaling, signaling in physical broadcast channel (PBCH), secondary synchronization signal (SSS) signaling, synchronization signal block (SSB) signaling, and primary synchronization signal (PSS) signaling.

[0212] The number of RBs occupied by PDCCH is less than or equal to the first quantity;

[0213] The predefined mapping method for CORESET is the first mapping method.

[0214] In one embodiment, the mapping method of CORESET is a second mapping method, which includes grouping CORESET and interleaving between groups and / or within groups of CORESET, wherein REGs in each group of CORESET are continuous.

[0215] In one embodiment, the target RB corresponds to a group of CORESET;

[0216] In CORESET, REGs within each group are interleaved, but not between groups; or...

[0217] In CORESET, REGs within each group are not interleaved, but those between groups are interleaved; or...

[0218] CORESET performs interleaving of REGs within each group and interleaving between groups.

[0219] In one embodiment, the target RB corresponds to multiple groups of CORESET; REGs within a group of CORESET are interleaved, but not between groups.

[0220] In one embodiment, CORESET is grouped according to N_RB_min, where N_RB_min is the number of RBs corresponding to the minimum bandwidth of the system, or the number of RBs corresponding to the bandwidth supported by the terminal device, or the number of RBs corresponding to the bandwidth supported by the first type of terminal device, or the number of RBs corresponding to the maximum bandwidth supported by the first type of terminal device, or the number of RBs corresponding to the maximum PDCCH bandwidth supported by the first type of terminal device, or a predefined value; or...

[0221] CORESET groups REGs according to the number of REGs included in the minimum aggregation level; or,

[0222] CORESET groups REGs according to the number of REGs included in the smallest divisor of the aggregation level; or...

[0223] CORESET groups REGs according to the largest approximation of the aggregation level.

[0224] In one embodiment, when CORESET is grouped according to N_RB_min, CORESET includes When there are REGs, any of the following characteristics must be satisfied:

[0225] for If the number of REGs in each group is divisible by N_RB_min, then the number of REGs in each group is N_RB_min.

[0226] for For cases where N_RB_min is not divisible, CORESET is divided into A+1 groups. The number of REGs in group A is N_RB_min, and the number of REGs in group 1 is...

[0227] for For cases where N_RB_min is not divisible, CORESET is divided into A groups. The number of REGs in groups B is N_RB_min, and the number of REGs in the remaining groups A and B is N_RB_min-1.

[0228] In one embodiment, the target RB corresponds to a specific group of CORESET.

[0229] In one embodiment, any of the following features are satisfied:

[0230] A specific group contains more REGs or resource element bundles than other groups contain more REGs or REG bundles.

[0231] The REG corresponding to a specific group is located in the middle frequency domain of the frequency domain where CORESET is located;

[0232] Except for certain groups, other groups include the same number of REGs or REG bundles.

[0233] In one embodiment, the interleaver function is f(x), x = 0, 1, 2, ..., P-1; P is the number of REGs included in CORESET;

[0234] When x≤N1 or x≥N2, f(x)=x; N1 and N2 are the numbers of the REGs before interleaving included in CORESET, N1<N2.

[0235] In one embodiment, CORESET includes a first frequency domain position, and the target RB corresponds to the first frequency domain position.

[0236] In one embodiment, the REG-to-RB mapping before interleaving at the first frequency domain location is performed by first type of interleaving, while the REG-to-RB mapping before interleaving at other frequency domain locations is performed by second type of interleaving or is not interleaved.

[0237] In one embodiment, the frequency domain start point of the first frequency domain location is indicated by an offset value that indicates the offset of the frequency domain start point of the first frequency domain location relative to one of the following: the start point location of CORESET, the frequency domain start point location of SSB, Point A, or the frequency domain start point location of the Initial Bandwidth Part (Initial BWP).

[0238] In one embodiment, a CORESET includes M REGs, a PDCCH occupies N REGs, and the CORESET is divided into C groups. Within a CORESET, the PDCCH is transmitted C times, and each CORESET group includes one repeated transmission of the PDCCH.

[0239] In one embodiment, the mapping method of CORESET is a third mapping method, which includes mapping the discrete pre-interleaving REGs in CORESET to continuous RBs; the target RB corresponds to the discrete pre-interleaving REGs in CORESET.

[0240] In one embodiment, a CORESET includes at least one sub-CORESET, and a target RB corresponds to one or more sub-CORESETs;

[0241] REGs within a sub-CORESET are interleaved within the sub-CORESET, but REGs within a sub-CORESET are not interleaved with REGs within other sub-CORESETs; or, REGs within a sub-CORESET may or may not be interleaved within the sub-CORESET, and may be interleaved between multiple sub-CORESETs.

[0242] Figure 12 is a schematic diagram of a channel transmission device provided in an embodiment. The device can be configured in a second communication node. As shown in Figure 12, the device includes: a second mapping module 2001 and a second communication module 2002.

[0243] The second mapping module 2001 is configured to determine the target resource block RB according to the mapping method of the control resource set CORESET, and the target RB occupies the first bandwidth;

[0244] The second communication module 2002 is configured to transmit the physical downlink control channel (PDCCH) on at least a portion of the target RBs.

[0245] The channel transmission device provided in this embodiment is to implement the channel transmission method of the embodiment shown in Figure 10. The implementation principle and technical effect of the channel transmission device provided in this embodiment are similar to those of the above embodiments, and will not be repeated here.

[0246] In one embodiment, the number of RBs included in the first bandwidth is a first quantity, which is a predefined quantity or N_RB_min;

[0247] N_RB_min is the number of RBs corresponding to the minimum bandwidth of the system, or the number of RBs corresponding to the bandwidth supported by the terminal device, or the number of RBs corresponding to the bandwidth supported by the first type of terminal device, or the number of RBs corresponding to the maximum bandwidth supported by the first type of terminal device, or the number of RBs corresponding to the maximum PDCCH bandwidth supported by the first type of terminal device, or a predefined value.

[0248] In one embodiment, the mapping method of CORESET is a first mapping method when at least one of the following conditions is met, wherein the first mapping method includes not interleaving the resource element group REG within CORESET:

[0249] The first communication node is at least one of a low-power wide-area LPWA terminal device, a lightweight terminal device, and a mobile terminal device;

[0250] CORESET is applicable to at least one of the following: LPWA terminal devices, lightweight terminal devices, and mobile terminal devices;

[0251] The signaling indicates that the mapping method of CORESET is the first mapping method, and the signaling is at least one of the following: main information block (MIB) signaling, system information block (SIB) signaling, radio resource control (RRC) signaling, signaling in physical broadcast channel (PBCH), secondary synchronization signal (SSS) signaling, synchronization signal block (SSB) signaling, and primary synchronization signal (PSS) signaling.

[0252] The number of RBs occupied by PDCCH is less than or equal to the first quantity;

[0253] The predefined mapping method for CORESET is the first mapping method.

[0254] In one embodiment, the mapping method of CORESET is a second mapping method, which includes grouping CORESET and interleaving between groups and / or within groups of CORESET, wherein REGs in each group of CORESET are continuous.

[0255] In one embodiment, the target RB corresponds to a group of CORESET;

[0256] In CORESET, REGs within each group are interleaved, but not between groups; or...

[0257] In CORESET, REGs within each group are not interleaved, but those between groups are interleaved; or...

[0258] CORESET performs interleaving of REGs within each group and interleaving between groups.

[0259] In one embodiment, the target RB corresponds to multiple groups of CORESET; REGs within a group of CORESET are interleaved, but not between groups.

[0260] In one embodiment, CORESET is grouped according to N_RB_min, where N_RB_min is the number of RBs corresponding to the minimum bandwidth of the system, or the number of RBs corresponding to the bandwidth supported by the terminal device, or the number of RBs corresponding to the bandwidth supported by the first type of terminal device, or the number of RBs corresponding to the maximum bandwidth supported by the first type of terminal device, or the number of RBs corresponding to the maximum PDCCH bandwidth supported by the first type of terminal device, or a predefined value; or...

[0261] CORESET groups REGs according to the number of REGs included in the minimum aggregation level; or,

[0262] CORESET groups REGs according to the number of REGs included in the smallest divisor of the aggregation level; or...

[0263] CORESET groups REGs according to the largest approximation of the aggregation level.

[0264] In one embodiment, when CORESET is grouped according to N_RB_min, CORESET includes When there are REGs, any of the following characteristics must be satisfied:

[0265] for If the number of REGs in each group is divisible by N_RB_min, then the number of REGs in each group is N_RB_min.

[0266] for For cases where N_RB_min is not divisible, CORESET is divided into A+1 groups. The number of REGs in group A is N_RB_min, and the number of REGs in group 1 is...

[0267] for For cases where N_RB_min is not divisible, CORESET is divided into A groups. The number of REGs in groups B is N_RB_min, and the number of REGs in the remaining groups A and B is N_RB_min-1.

[0268] In one embodiment, the target RB corresponds to a specific group of CORESET.

[0269] In one embodiment, any of the following features are satisfied:

[0270] A specific group contains more REGs or resource element bundles than other groups contain more REGs or REG bundles.

[0271] The REG corresponding to a specific group is located in the middle frequency domain of the frequency domain where CORESET is located;

[0272] Except for certain groups, other groups include the same number of REGs or REG bundles.

[0273] In one embodiment, the interleaver function is f(x), x = 0, 1, 2, ..., P-1; P is the total number of REGs included in CORESET;

[0274] When x≤N1 or x≥N2, f(x)=x; N1 and N2 are the numbers of the REGs before interleaving included in CORESET, N1<N2.

[0275] In one embodiment, CORESET includes a first frequency domain position, and the target RB corresponds to the first frequency domain position.

[0276] In one embodiment, the REG-to-RB mapping before interleaving at the first frequency domain location is performed by first type of interleaving, while the REG-to-RB mapping before interleaving at other frequency domain locations is performed by second type of interleaving or is not interleaved.

[0277] In one embodiment, the frequency domain start point of the first frequency domain location is indicated by an offset value that indicates the offset of the frequency domain start point of the first frequency domain location relative to one of the following: the start point location of CORESET, the frequency domain start point location of SSB, Point A, or the frequency domain start point location of the Initial Bandwidth Part (Initial BWP).

[0278] In one embodiment, a CORESET includes M REGs, a PDCCH occupies N REGs, and the CORESET is divided into C groups. Within a CORESET, the PDCCH is transmitted C times, and each CORESET group includes one repeated transmission of the PDCCH.

[0279] In one embodiment, the mapping method of CORESET is a third mapping method, which includes mapping the discrete pre-interleaving REGs in CORESET to continuous RBs; the target RB corresponds to the discrete pre-interleaving REGs in CORESET.

[0280] In one embodiment, a CORESET includes at least one sub-CORESET, and a target RB corresponds to one or more sub-CORESETs;

[0281] REGs within a sub-CORESET are interleaved within the sub-CORESET, but REGs within a sub-CORESET are not interleaved with REGs within other sub-CORESETs; or, REGs within a sub-CORESET may or may not be interleaved within the sub-CORESET, and may be interleaved between multiple sub-CORESETs.

[0282] This application also provides a communication node, including a processor, which is configured to implement the methods provided in any embodiment of this application when executing a computer program. Exemplary embodiments below provide schematic diagrams of the communication node as a base station and a UE, respectively.

[0283] Figure 13 is a schematic diagram of the structure of a UE provided in an embodiment. The UE can be implemented in various forms. The UE in this application can include, but is not limited to, mobile terminal devices such as mobile phones, smartphones, laptops, digital broadcast receivers, personal digital assistants (PDAs), tablet computers (PADs), portable media players (PMPs), navigation devices, in-vehicle terminal devices, in-vehicle display terminals, in-vehicle electronic rearview mirrors, etc., as well as fixed terminal devices such as digital television (TV), desktop computers, etc.

[0284] As shown in Figure 13, UE 50 may include a wireless communication unit 51, an audio / video (A / V) input unit 52, a user input unit 53, a sensing unit 54, an output unit 55, a memory 56, an interface unit 57, a processor 58, and a power supply unit 59, etc. Figure 13 illustrates a UE including multiple components; however, it should be understood that it is not required to implement all of the components shown. More or fewer components may be implemented alternatively.

[0285] In this embodiment, the wireless communication unit 51 allows the UE 50 to communicate wirelessly with a base station or network. The A / V input unit 52 is configured to receive audio or video signals. The user input unit 53 can generate key input data to control various operations of the UE 50 based on user-input commands. The sensing unit 54 detects the current state of the UE 50, the position of the UE 50, the presence or absence of user touch input to the UE 50, the orientation of the UE 50, the acceleration or deceleration of the UE 50, and its direction, etc., and generates commands or signals for controlling the operation of the UE 50. The interface unit 57 serves as an interface through which at least one external device can connect to the UE 50. The output unit 55 is configured to provide output signals in a visual, audio, and / or tactile manner. The memory 56 can store software programs, etc., that perform processing and control operations executed by the processor 58, or can temporarily store data that has been output or will be output. The memory 56 can include at least one type of storage medium. Moreover, the UE 50 can cooperate with a network storage device that performs the storage function of the memory 56 via a network connection. Processor 58 typically controls the overall operation of UE 50. Power supply unit 59, under the control of processor 58, receives external or internal power and provides the appropriate power required to operate various components and assemblies.

[0286] The processor 58 executes at least one functional application and data processing by running a program stored in the memory 56, such as implementing the method provided in the embodiments of this application.

[0287] Figure 14 is a schematic diagram of a base station structure provided in one embodiment. As shown in Figure 14, the base station includes a processor 60, a memory 61, and a communication interface 62. The number of processors 60 in the base station can be one or more; Figure 14 shows an example of one processor 60. The processor 60, memory 61, and communication interface 62 in the base station can be connected via a bus or other means; Figure 14 shows an example of connection via a bus. The bus represents one or more types of bus structures, including a memory bus or memory controller, a peripheral bus, a graphics acceleration port, a processor, or a local bus using any of the various bus structures.

[0288] The memory 61, as a computer-readable storage medium, can be configured to store software programs, computer-executable programs, and modules, such as the program instructions / modules corresponding to the methods in the embodiments of this application. The processor 60 executes at least one functional application and data processing of the base station by running the software programs, instructions, and modules stored in the memory 61, thereby implementing the methods described above.

[0289] The memory 61 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the terminal. Furthermore, the memory 61 may include high-speed random access memory and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state storage device. In some instances, the memory 61 may include memory remotely located relative to the processor 60, and this remote memory may be connected to a base station via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0290] The communication interface 62 can be configured to receive and send data.

[0291] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the methods provided in any embodiment of this application.

[0292] The computer storage medium in this application embodiment can be any combination of one or more computer-readable media. The computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. For example, a computer-readable storage medium can be, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. Computer-readable storage media include (a non-exhaustive list): electrical connections having one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EPROM), flash memory, optical fiber, portable compact disc read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this application, the computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0293] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, the data signals carrying computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, which can send, propagate, or transmit programs for use by or in conjunction with an instruction execution system, apparatus, or device.

[0294] Program code contained on a computer-readable medium may be transmitted using any suitable medium, including but not limited to wireless, wire, optical fiber, radio frequency (RF), or any suitable combination thereof.

[0295] Computer program code for performing the operations of this disclosure can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​(such as Java, Smalltalk, C++, Ruby, and Go) and conventional procedural programming languages ​​(such as the "C" language or similar programming languages). The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network (including a Local Area Network (LAN) or a Wide Area Network (WAN)), or it can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0296] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the methods provided in any embodiment of this application.

[0297] In the implementation of the computer program product, computer program code for performing the operations of this application can be written in one or more programming languages ​​or a combination thereof. Programming languages ​​include object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as C or similar languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0298] Those skilled in the art will understand that the term user terminal encompasses any suitable type of wireless user equipment, such as mobile phones, portable data processing devices, portable web browsers, or vehicle-mounted mobile stations.

[0299] Generally, the various embodiments of this application can be implemented in hardware or dedicated circuitry, software, logic, or any combination thereof. For example, some aspects can be implemented in hardware, while others can be implemented in firmware or software that can be executed by a controller, microprocessor, or other computing device, although this application is not limited thereto.

[0300] Embodiments of this application can be implemented by executing computer program instructions through the data processor of a mobile device, for example, in a processor entity, or through hardware, or through a combination of software and hardware. The computer program instructions can be assembly instructions, Instruction Set Architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, status setting data, or source code or object code written in any combination of one or more programming languages.

[0301] Any block diagram of logical flow in the accompanying drawings of this application may represent program steps, or may represent interconnected logic circuits, modules, and functions, or may represent a combination of program steps and logic circuits, modules, and functions. The computer program may be stored in memory. The memory may be of any type suitable to the local technical environment and may be implemented using any suitable data storage technology, such as, but not limited to, read-only memory (ROM), random access memory (RAM), optical storage devices and systems (Digital Multifunction Discs, DVDs, or CDs), etc. Computer-readable media may include non-transitory storage media. The data processor may be of any type suitable to the local technical environment, such as, but not limited to, general-purpose computers, special-purpose computers, microprocessors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), and processors based on multi-core processor architectures.

Claims

1. A channel receiving method, applied to a first communication node, the method comprising: Based on the mapping method of the control resource set CORESET, the target resource block RB is determined, and the target RB occupies the first bandwidth; Physical downlink control channel (PDCCH) is received on at least a portion of the target RB.

2. The method according to claim 1, wherein, The first bandwidth includes a first number of RBs, which is a predefined number or N_RB_min; The N_RB_min is one of the following: the number of RBs corresponding to the minimum bandwidth of the system, the number of RBs corresponding to the bandwidth supported by the terminal device, the number of RBs corresponding to the bandwidth supported by the first type of terminal device, the number of RBs corresponding to the maximum bandwidth supported by the first type of terminal device, the number of RBs corresponding to the maximum PDCCH bandwidth supported by the first type of terminal device, or a predefined value.

3. The method according to claim 1, wherein, In response to determining that at least one of the following conditions is met, the mapping method of the CORESET is a first mapping method, wherein the resource element group REG within the CORESET is not interleaved: The first communication node is at least one of a low-power wide-area LPWA terminal device, a lightweight terminal device, and a mobile terminal device; The CORESET is applicable to at least one of the LPWA terminal device, the lightweight terminal device, and the mobile terminal device; The signaling indicates that the mapping method of the CORESET is the first mapping method, and the signaling is at least one of the following: Master Information Block (MIB) signaling, System Information Block (SIB) signaling, Radio Resource Control (RRC) signaling, signaling in the Physical Broadcast Channel (PBCH), Secondary Synchronization Signal (SSS) signaling, Synchronization Signal Block (SSB) signaling, and Primary Synchronization Signal (PSS) signaling. The number of RBs occupied by the PDCCH is less than or equal to the first number; The mapping method of the CORESET is predefined as the first mapping method.

4. The method according to claim 1, wherein, The mapping method of the CORESET is a second mapping method, which includes grouping the CORESET and interleaving between groups and / or within groups of the CORESET, wherein the REGs in each group of the CORESET are continuous.

5. The method according to claim 4, wherein, The target RB corresponds to a group of the CORESET; The REGs within each group of the CORESET are interleaved, but not between groups; or, The REGs within each group of the CORESET are not interleaved, but are interleaved between groups. or, The REGs within each group of the CORESET are interleaved, and the REGs between groups are interleaved.

6. The method according to claim 4, wherein, The target RB corresponds to multiple groups of the CORESET; the REGs within the CORESET are interleaved, but not between groups.

7. The method according to claim 4, wherein, The CORESET is grouped according to N_RB_min, where N_RB_min is one of the following: the number of RBs corresponding to the minimum system bandwidth, the number of RBs corresponding to the bandwidth supported by the terminal device, the number of RBs corresponding to the bandwidth supported by the first type of terminal device, the number of RBs corresponding to the maximum bandwidth supported by the first type of terminal device, the number of RBs corresponding to the maximum PDCCH bandwidth supported by the first type of terminal device, or a predefined value; or... The CORESET is grouped according to the number of REGs included in the minimum aggregation level; or, The CORESET is grouped according to the number of REGs included in the minimum divisor of the aggregation level; or... The CORESET is grouped according to the maximum number of REGs included in the aggregation level.

8. The method according to claim 7, wherein, In response to determining that the CORESET is grouped according to N_RB_min, and the CORESET includes A REG that satisfies any of the following characteristics: for If the number of REGs in each group is divisible by N_RB_min, then the number of REGs in each group is N_RB_min. for If the CORESET cannot be divided by N_RB_min, then the CORESET is divided into A+1 groups. The number of REGs in group A is N_RB_min, and the number of REGs in group 1 is... for If the CORESET cannot be divided by N_RB_min, then the CORESET is divided into A groups. The number of REGs in groups B is N_RB_min, and the number of REGs in the remaining groups A and B is N_RB_min-1.

9. The method according to claim 4, wherein, The target RB corresponds to a specific group of the CORESET.

10. The method according to claim 9, wherein, Satisfy any of the following characteristics: The number of REGs or resource element bundles included in the specific group is greater than the number of REGs or REG bundles included in other groups; The REG corresponding to the specific group is located in the middle frequency domain of the frequency domain where the CORESET is located; Except for the specific group, the other groups include the same number of REGs or REG bundles.

11. The method according to claim 4, wherein, The interleaver function is f(x), x = 0, 1, 2, ..., P-1; P is the number of REGs included in the CORESET; In response to determining x≤N1 or x≥N2, f(x)=x; N1 and N2 are the numbers of the pre-interleaving REGs included in the CORESET, N1<N2.

12. The method according to claim 4, wherein, The CORESET includes a first frequency domain position, and the target RB corresponds to the first frequency domain position.

13. The method according to claim 12, wherein, The REG-to-RB mapping before interleaving at the first frequency domain position undergoes first-type interleaving, while the REG-to-RB mapping before interleaving at other frequency domain positions undergoes second-type interleaving or no interleaving.

14. The method according to claim 12, wherein, The frequency domain start point of the first frequency domain location is indicated by an offset value, which indicates the offset of the frequency domain start point of the first frequency domain location relative to one of the following: the start point location of the CORESET, the frequency domain start point location of the SSB, point A, or the frequency domain start point location of the Initial Bandwidth Part (Initial BWP).

15. The method according to claim 4, wherein, The CORESET includes M REGs, the PDCCH occupies N REGs, the CORESET is divided into C groups, and the PDCCH is transmitted C times within the CORESET. Each CORESET group includes one repeated transmission of the PDCCH.

16. The method according to claim 1, wherein, The mapping method of the CORESET is the third mapping method, which includes mapping the discrete pre-interleaving REGs in the CORESET to continuous RBs; the target RB corresponds to the discrete pre-interleaving REGs in the CORESET.

17. The method according to claim 1, wherein, The CORESET includes at least one sub-CORESET, and the target RB corresponds to one or more of the sub-CORESETs; The REGs within a sub-CORESET are interleaved within that sub-CORESET, and the REGs within a sub-CORESET are not interleaved with REGs in other sub-CORESETs; or, the REGs within a sub-CORESET are interleaved or not interleaved within that sub-CORESET, and the multiple sub-CORESETs are interleaved with each other.

18. A channel transmission method applied to a second communication node, the method comprising: Based on the mapping method of the control resource set CORESET, the target resource block RB is determined, and the target RB occupies the first bandwidth; A physical downlink control channel (PDCCH) is transmitted to the first communication node on at least a portion of the target RB.

19. The method according to claim 18, wherein, The first bandwidth includes a first number of RBs, which is a predefined number or N_RB_min; The N_RB_min is one of the following: the number of RBs corresponding to the minimum bandwidth of the system, the number of RBs corresponding to the bandwidth supported by the terminal device, the number of RBs corresponding to the bandwidth supported by the first type of terminal device, the number of RBs corresponding to the maximum bandwidth supported by the first type of terminal device, the number of RBs corresponding to the maximum PDCCH bandwidth supported by the first type of terminal device, or a predefined value.

20. The method according to claim 18, wherein, In response to determining that at least one of the following conditions is met, the mapping method of the CORESET is a first mapping method, wherein the mapping from resource element group REG to RB within the CORESET is not interleaved: The first communication node is at least one of a low-power wide-area LPWA terminal device, a lightweight terminal device, and a mobile terminal device; The CORESET is applicable to at least one of low-power wide-area LPWA terminal devices, lightweight terminal devices, and mobile terminal devices; The signaling indicates that the mapping method of the CORESET is the first mapping method, and the signaling is at least one of the following: Master Information Block (MIB) signaling, System Information Block (SIB) signaling, Radio Resource Control (RRC) signaling, signaling in the Physical Broadcast Channel (PBCH), Secondary Synchronization Signal (SSS) signaling, Synchronization Signal Block (SSB) signaling, and Primary Synchronization Signal (PSS) signaling. The number of RBs occupied by the PDCCH is less than or equal to the first number; The mapping method of the CORESET is predefined as the first mapping method.

21. The method according to claim 18, wherein, The mapping method of the CORESET is a second mapping method, which includes grouping the CORESET and interleaving between groups and / or within groups of the CORESET, wherein the REGs in each group of the CORESET are continuous.

22. The method according to claim 18, wherein, The mapping method of the CORESET is the third mapping method, which includes mapping the discrete pre-interleaving REGs in the CORESET to continuous RBs; the target RB corresponds to the discrete pre-interleaving REGs in the CORESET.

23. The method according to claim 18, wherein, The CORESET includes at least one sub-CORESET, and the target RB corresponds to one or more of the sub-CORESETs; The REGs within a sub-CORESET are interleaved within that sub-CORESET, and the REGs within a sub-CORESET are not interleaved with REGs in other sub-CORESETs; or, the REGs within a sub-CORESET are interleaved or not interleaved within that sub-CORESET, and the multiple sub-CORESETs are interleaved with each other.

24. A communication node, comprising: processor; The processor is configured to implement the method as described in any one of claims 1-23 when executing a computer program.

25. A computer-readable storage medium storing a computer program that, when executed by a processor, implements the method as described in any one of claims 1-23.

Images