MÉTODO DE COMUNICAÇÃO, APARELHO E MEIO DE ARMAZENAMENTO LEGÍVEL POR COMPUTADOR

Abstract

This application relates to a communication method, a terminal device, and a network device. The method includes: receiving, by a terminal device, information about the configuration of a first set of control resources, wherein the information about the configuration of the first set of control resources includes information about the mapping form of the first set of control resources; and determining, by the terminal device, based on the information about the mapping form of the first set of control resources, a mapping form between a control channel element cce and groups of resource elements regs in the first set of control resources, wherein a reg in the first set of control resources occupies a symbol in the time domain and occupies a resource block rb in the frequency domain.In the communication method according to this embodiment of the present application, the cce-to-reg mapping form is determined based on a granularity greater than a res granularity in a reg defined in the prior art. This helps to reduce a delay generated when a mapping relationship is determined between a cce transmitting a pdcch and a reg.

Description

A method of communication, device, and computer-readable storage medium. TECHNICAL FIELD

[001] This application relates to the field of communications and, more specifically, to a communication method, a terminal device and a network device. BACKGROUND

[002] A physical downlink control channel (Physical Downlink A Control Channel (PDCCH) carries downlink control information (DCI). DCI can include resource allocation information and other control information for one or more terminal devices. In general, a plurality of PDCCHs can be transmitted in a subframe. A terminal device must first obtain the DCI of a terminal device's PDCCH through demodulation so that a shared physical downlink channel (Physical Downlink Shared Channel, PDSCH) belonging to the terminal device, such as a broadcast, paging, and data message, can be demodulated from a corresponding resource location.

[003] In a Long Term Evolution system In order to configure a PDCCH more efficiently, two dedicated control channel resource units are defined: a Resource Element Group (REG) and a Control Channel Element (CCE). The PDCCH is transmitted on one or more consecutive CCEs. Each CCE includes nine REGs, and each REG includes four or six neighboring Resource Elements (REs) located on the same OFDM symbol.

[004] Before the PDCCH is transmitted, a network device must first determine a CCE that transmits the PDCCH and, Petition 870250077633, dated 01 / 09 / 2025, page 103 / 201 2 / 90 Finally, determine a mapping relationship between the PDCCH and an RE based on a mapping relationship between the CCE and a REG and the RE included in the REG. However, since the REG defined in the state of the art includes four or six REs in terms of granularity, and the granularity of the REs in the REG is relatively small, if a relatively large amount of resources is required for PDCCH transmission, a plurality of CCEs needs to be determined, and REGs in each of the plurality of CCEs need to be determined. In this case, a delay generated when the mapping relationship between the CCE transmitting the PDCCH and the REG is determined is increased. SUMMARY

[005] The present application provides a communication method, a terminal device and a network device, in order to reduce a delay generated when a mapping relationship between a CCE transmitting a PDCCH and a REG is determined.

[006] According to a first aspect, a method of communication is provided which includes: To receive, by a terminal device, information about the configuration of a first set of control resources, wherein the information about the configuration of the first set of control resources includes information about the mapping form of the first set of control resources; and to determine, by the terminal device, based on the information about the mapping form of the first set of control resources, a mapping form between a control channel element CCE and groups of resource elements REGs in the first set of control resources, where a REG in the first set of control resources occupies a symbol in the time domain and occupies a resource block RB in the frequency domain. Petition 870250077633, dated 01 / 09 / 2025, page 104 / 201 3 / 90

[007] In the communication method according to this embodiment of the present application, the CCE-to-REG mapping mode is determined based on a larger granularity than the RE granularity in a REG defined in the prior art. This helps to reduce a delay generated when a mapping relationship is determined between a CCE transmitting a PDCCH and a REG.

[008] With reference to the first aspect, in a possible implementation of the first aspect, one form of mapping CCEs in the first set of control features is localized mapping, a plurality of REGs included in each of the CCEs in the first set of control features are consecutive in the frequency domain and the plurality of REGs included in each CCE is localized in the same symbol.

[009] With reference to the first aspect, in a possible implementation of the first aspect, the CCEs in the first set of control features are numbered sequentially, the CCEs in the first set of control features are numbered first consecutively in the time domain and CCEs numbered adjacently in the first set of control features are located in different symbols.

[0010] With reference to the first aspect, in a possible implementation of the first aspect, the information on the mapping form of the first set of control features indicates that the mapping form of the first set of control features is localized mapping and each CCE in the first set of control features includes a plurality of consecutive REGs in the frequency domain and the plurality of REGs included in each CCE is localized in the same symbol.

[0011] With reference to the first aspect, in a possible implementation of the first aspect, REGs in a CCE numbered n in Petition 870250077633, dated 01 / 09 / 2025, p. 105 / 201 4 / 90 The first set of control features are numbered. AtCORESET .mi srCORESET . mNsymb + nm0d Nsymb + n . A / CCE . AtCORESET λτ-CORESET ' NREG ' Nsymbvsymb or REGs in one CCE numbered n in the first set of control features are numbered m + (n mod N™) · N + n atCORESETvsymb ·NCCE jvreg or a numbered n CCE in the first set of control resources contains numbered m + n REGs atCORESET ' symb · NRC and located in a numbered symbol n mod NPRESET, where m = 0,1,mCCE , c 1 a^CORESET ,A7-coreseta___„NREG —1,n= 0,1,-,NCCE —1,Nsymb is a quantity of symbols included in the first set of control features, NREE is a quantity of REGs included in the numbered CCE n in the first set of control features and NCCCOERESETé is a quantity of CCEs included in the first set of control features.

[0012] With reference to the first aspect, in a possible implementation of the first aspect, the information about the mapping form of the first set of control resources indicates that the mapping mode of the first set of control resources is distributed mapping and REGs in a numbered CCE n in the first set of control resources are numbered Nxp n modV-c E +N reg _| n Nxp RB RB N CCE _1Rreg _ xTX„ · Nr / + m · RB NXpRBrbNCCE jvreg ..X. where n = 0,1,..., nCcc E — 1, m = 0,1,..., nRCG — 1, NRCE is a quantity of REGs included in the CCE j[„ numbered n in the first set of control features, NCCpE is a quantity of CCEs included in the first set of features of Petition 870250077633, dated 01 / 09 / 2025, page 106 / 201 5 / 90 X,\. Control and NB refers to the number of resource blocks included in the first set of control resources.

[0013] With reference to the first aspect, in a possible implementation of the first aspect, the CCEs in the first set of control features are numbered sequentially, the CCEs in the first set of control features are numbered first consecutively in the frequency domain and the CCEs in the first set of control features are numbered in the same order in each symbol.

[0014] With reference to the first aspect, in a possible implementation of the first aspect, the information on the mapping form of the first set of control resources indicates that the mapping form of the first set of control resources is time-first located, REGs in the first set of control resources are numbered in a time-first located way and REGs in a numbered CCE n in the first set of control resources are numbered m+nNCCE, where m = 0,1,...,nCCE -1, n = 0,1,...,nCORSET -1, NCCE is a quantity of REGs included in the numbered CCE n in the first set of control resources and NCCCOERESETe is a quantity of CCEs included in the first set of control resources.

[0015] With reference to the first aspect, in a possible implementation of the first aspect, one form of mapping CCEs in the first set of control features is localized mapping, a plurality of REGs included in each of the CCEs in the first set of control features are the first consecutive in the time domain and adjacently numbered REGs in each CCE are localized in different symbols.

[0016] With reference to the first aspect, in a possible Petition 870250077633, dated 01 / 09 / 2025, p. 107 / 201 6 / 90 Implementation of the first aspect, the information on the mapping form of the first set of control resources indicates that the mapping form of the first set of control resources is frequency-first localized mapping, REGs in the first set of control resources are numbered in a frequency-first manner and REGs in a CCE numbered n in the first set of control resources are numbered m+nNCCG, where m = 0,1,...,nCCG -1, n = 0,1,...,nCC^SET -1, NCCE is a quantity of REGs included in the CCE numbered n in the first set of control resources and Ncccese is a quantity of CCEs included in the first set of control resources.

[0017] With reference to the first aspect, in a possible implementation of the first aspect, one form of mapping CCEs in the first set of control features is distributed mapping, each of the CCEs in the first set of control features includes a plurality of sets of REGs, the plurality of sets of REGs is distinctly distributed in the frequency domain and the REGs in the plurality of sets of REGs are consecutive in the time domain.

[0018] With reference to the first aspect, in a possible implementation of the first aspect, the information on the mapping form of the first set of control resources indicates that the mapping form of the first set of control resources is distributed time-first mapping, REGs in the first set of control resources are numbered in a time-first manner, and REGs in a numbered n CCE in the first set of control resources are numbered i+n nsCy°CESET+j .rCOCESETNCEG_____NCCG -y-COCESET yvsymb Petition 870250077633, dated 01 / 09 / 2025, p. 108 / 201 7 / 90 _______ , .CCE where 1 - 0 1 ncoreset_ 1n= Q1 n CORESET _ I ,-_niNREG i N coreset is Uliue1=Q,1,...,Nsymb1,n0,1,..., N CCE1, j = 0,1,---,—CORESET-1,JVsymbéNsymb is a number of symbols included in the first set of control features, nRE>(RESETé is a number of REGs included in the first set of control features, NRCG is a number of REGs included in the numbered CCE n in the first set of control features, and CcRESETé is a number of CCEs included in the first set of control features.

[0019] With reference to the first aspect, in a possible implementation of the first aspect, REGs in a numbered CCE n in the first set of control resources are numbered -y-CORESETvsymb r n mod r..CORESETNCCE -y-CORESET yvsymb r . .CORESET λNCCE CORESETNREGNCCE REG or REGs in a -^CORESET yvsymb CCE numbered n in the first set of control resources are rf ..CORESET λ numbered n mod “Eeset + yNsymb yn NCORESET + m CORESET NRB r ..CORESET λ N CCE N CCE L 7 V REG _| L ..CORESET y vsymb y or a CCE numbered n in the first set of control resources contains Numbered REGs nmod ^ ,,-CORESETλNCCE yORESET yvsymb y CORESETNRBNCCE7Vreg and located in a numbered symbol n r ..CORESET λNCCE ..CORESET yNsymb y where n = 0,1,..., CORESET CCE _ 1, m = 0,1,NCCENREG λrCORESET ' t'ttt'tt't't « , Nsymbé is a quantity of symbols included in the first set of control resources, ncoreseté is a quantity of CCEs included Petition 870250077633, dated 01 / 09 / 2025, p. 109 / 201 8 / 90 in the first set of control features, N'^' is a quantity of REGs included in the first set of control features and NRCE is a quantity of REGs included in the numbered CCE n in the first set of control features.

[0020] With reference to the first aspect, in a possible implementation of the first aspect, the information on the mapping form of the first set of control resources indicates that the mapping mode of the first set of control resources is distributed mapping in interleaved time-frequency, REGs in the first set of control resources are numbered in a time-first manner, and REGs in a numbered CCE in the first set of control resources are numbered C CORESETnNsymb ' CORESETNsymb + (m + n) mod NSyORESET + m · NC™ or REGs in a CCE numbered n in the first set of control resources are numbered (iCmRESET· n mod ^ -..CORESET V NCCE--.^CORESET tNsymb jj n CORESETNCCE ,,CORESET Nsymb mod N CORESET symbol CORESETNREG where CCE REG C , ..CORESET . „ C „TCCE . ht-CORESET .· . . . n = 0,1,...,nCCE-1, m = 0,1,...,nREG -1, Nsymb is the number of symbols included in the first set of control features, NCCCOERESET is the number of CCEs included in the first set of control features, NRCORESET is the number of REGs included in the first set of control features, and NREGE is the number of REGs included in the numbered CCE n in the first set of control features.

[0021] With reference to the first aspect, in a possible implementation of the first aspect, the first search space is Petition 870250077633, dated 01 / 09 / 2025, p. 110 / 201 9 / 90 located in the first set of control resources, the first The M(L) search space includes p>k candidates of physical downlink control channels (PDCCHs) with an aggregation level of L, and a numbered PDCCH M(L) candidate m is one of the p>k PDCCH candidates with the aggregation level of L; and the method also includes: To determine, using the terminal device based on the mapping information of the first set of control resources, the L CCEs included in the candidate PDCCH numbered m in the first search space.

[0022] With reference to the first aspect, in a possible implementation of the first aspect, the information on the mapping form of the first set of control resources indicates that the mapping form of the first set of control resources is distributed mapping and if L equals 2, the candidate PDCCH numbered m includes two consecutively numbered CCEs; or if L is greater than 2, the candidate PDCCH numbered m includes L CCEs and at least two of the L CCEs are numbered non-consecutively.

[0023] According to a second aspect, the present application provides a communication method that includes: To determine, by a network device, a mapping method between a control channel element (CCE) in a first set of control resources and groups of resource elements (REGs) in the first set of control resources, where a REG in the first set of control resources occupies a symbol in the time domain and occupies a block of resources (RB) in the frequency domain; and to send, by the network device, information about the configuration of the first set of control resources, wherein the information about the configuration of the first set of control resources includes information about the mapping method of the first set of control resources. Petition 870250077633, dated 01 / 09 / 2025, page 111 / 201 10 / 90 control resources and the information about the mapping method of the first set of control resources indicates the mapping method between the CCE and the REGs in the first set of control resources.

[0024] In the communication method according to this embodiment of the present application, the CCE-to-REG mapping mode is determined based on a higher granularity than the RE granularity in a REG defined in the prior art. This helps to reduce a delay generated when a mapping relationship is determined between a CCE transmitting a PDCCH and a REG.

[0025] With reference to the second aspect, in a possible implementation of the second aspect, the information on the mapping form of the first set of control features indicates that the mapping form of the first set of control features is localized mapping, each CCE in the first set of control features includes a plurality of consecutive REGs in the frequency domain and the plurality of REGs included in each CCE is localized in the same symbol.

[0026] With reference to the second aspect, in a possible implementation of the second aspect, the REGs in a CCE numbered n in the first set of control resources are numberedArCORESET. < irCORESET. mNsymb + n mOd Nsymb + n atCORESET ' symbolb CCE CORESETNREG ·Nsymb Ou REGs in a CCE numbered n in the first set of control features are numbered m + (n mod NSymrET) · N^ORESET+ n atCORESET 'symb ·NCCE 7Vreg or a CCE numbered n in the first set of control resources contains REGs numbered m + n xrCORESETvsymb · NREG and located in a numbered symbol Petition 870250077633, dated 01 / 09 / 2025, page 112 / 201 11 / 90 nmodN , where m = 0,1, atCCE , C , ..CORESET ,A7-CORESETA___„NREG -1,n= 0,1,-,NCCE -1,Nsymb θ is a quantity of symbols included in the first set of control features, NREE is a quantity of REGs included in the numbered CCE n in the first set of control features and NCORESET is a quantity of CCEs included in the first set of control features.

[0027] With reference to the second aspect, in a possible implementation of the second aspect, the information on the mapping form of the first set of control features indicates that the mapping form of the first set of control features is time-first localized mapping, REGs in the first set of control features are numbered in a time-first-frequency-second manner, and REGs in a numbered n CCE in the first set of control features are numbered m+nNREG, ..CCE cc ..CORESET atCCE where m = 0,1,...,nREG -1, n = 0,1,...,nCCe-1, NRI.G is a quantity of REGs included in the numbered CCE n in the first set of control features and N CORESET is a quantity of CCEs included in the first set of control features.

[0028] With reference to the second aspect, in a possible implementation of the second aspect, the information on the mapping form of the first set of control resources indicates that the mapping form of the first set of control resources is frequency-first localized mapping, REGs in the first set of control resources are numbered in a frequency-second time-first manner, and REGs in a numbered CCE n in the first set of control resources are numbered m+nNREG, _ _i _ ci atCCE , ci atCORESET i atCCE x _ where m = 0,1,...,nreg-1, n = 0,1,...,nCCe-1, NREG is a quantity of REGs included in the numbered CCE n in the first set of resources. Petition 870250077633, dated 01 / 09 / 2025, page 113 / 201 12 / 90 control and N COR'S'1 is a quantity of CCEs included in the first set of control features.

[0029] With reference to the second aspect, in a possible implementation of the second aspect, the information on the mapping form of the first set of control resources indicates that the mapping form of the first set of control resources is time-distributed mapping, REGs in the first set of control resources are numbered in a time-first frequency-second manner, and REGs in a numbered CCE in the first set of control resources are numbered ..CORESETNREG NCCENREGΛ1 C 1XTCORESET ,n<λ, CORESET1where i = o,1,...,^-1,n= ο,ι,...,Ncce-1, CORESET s symb j = 0,1, atCCE —^REG^-1, NsCmRESESET is a number of symbols included in the first set of control features, NRCEORESET is a number of REGs included in the first set of control resources, NCEG is a quantity of REGs included in the numbered CCE n in the first set of control resources and N CCORESET is a quantity of CCEs included in the first set of control resources.

[0030] With reference to the second aspect, in a possible implementation of the second aspect, the REGs in a CCE numbered n in the first set of control resources are numbered -y-CORESETvsymb And in mode E..CORESETNCCE ..CORESET yNsymb And ..CORESETΛNCCE CORESETNREGNCCE REG or REGs in a yvsymb _CORESET CCE numbered n in the first set of control resources are Petition 870250077633, dated 01 / 09 / 2025, p. 114 / 201 13 / 90 numbered nmod C ..CORESET Λ NCCE--NCORESET ^vsymb yn CORESET NCCE--NCORESET^vsymb y CORESET RB CORESETNRBNCCE 7Vreg or one CCE numbered n in the first set of control resources contains Numbered REGs nmodΛ..CORESETλ NCCE ..CORESET Çvsymb y CORESETNRBNCCE7Vreg and located in a numbered symbol n f..CORESETΛNCCE ..CORESET Çvsymb y onde C । ..CORESET n = 0,1,..., NCCEm = 0,1,..., nRCG -1, NsCmRESET is the number of symbols included in the first set of control features, n CORESET is the number of CCEs included in the first set of control features, NCO™ is a quantity of REGs included in the first set of control features, and NREG is a quantity of REGs included in the numbered CCE n in the first set of control features.

[0031] With reference to the second aspect, in a possible implementation of the second aspect, the information on the mapping form of the first set of control resources indicates that the mapping mode of the first set of control resources is distributed mapping in time-frequency interleaved, REGs in the first set of control resources are numbered by time first and REGs in a CCE numbered n in the first set of control resources are numbered .^CORESET 'symb n . .CORESET 'symb + (m + n )mod N™T+ m CORESETNREGNCCEREG or REGs in a CCE numbered n in the first set of control resources are numbered Petition 870250077633, dated 01 / 09 / 2025, page 115 / 201 14 / 90 ( · n mod ,CORESET V —cCORESET symb y . n CORESET N CCE ..CORESETvsymb mod NsCyORESET+ m · CORESET REG NCCE REG where n = 0,1,...,n' -1, m = 0,1,...,n-1, N“T is a quantity of ss SVlllL» symbols included in the first set of control features, n CORESET is a quantity of CCEs included in the first set of control features, NC^™ is a quantity of REGs included in the first set of control features and NCCE is a quantity of REGs included in the CCE numbered n in the first set of control features.

[0032] With reference to the second aspect, in a possible implementation of the second aspect, the first search space is located in the first set of control features, the first search space includes MPDCCHs candidates with an aggregation level L, a PDCCH candidate numbered m is one of the M PDCCHs candidates with the aggregation level L and the information about the mapping shape of the first set of control features indicates L CCEs included in the PDCCH candidate numbered m in the first search space.

[0033] With reference to the second aspect, in a possible implementation of the second aspect, the information on the mapping form of the first set of control features indicates that the mapping form of the first set of control features is distributed mapping and if L is equal to 2, the candidate PDCCH numbered m includes two consecutively numbered CCEs; or if L is greater than 2, the candidate PDCCH numbered m includes L CCEs and at least two of the L CCEs are numbered non-consecutively. Petition 870250077633, dated 01 / 09 / 2025, p. 116 / 201 15 / 90

[0034] According to a third aspect, a terminal device is provided. The terminal device may implement functions of the terminal device in the previous method design in the first aspect. The functions may be implemented by hardware or may be implemented by hardware running the corresponding software. Hardware or software includes one or more units that correspond to the previous functions.

[0035] According to a fourth aspect, a network device is provided. The network device may implement functions of the network device in the previous method design in the second aspect. The functions may be implemented by hardware or may be implemented by hardware running the corresponding software. Hardware or software includes one or more units that correspond to the previous functions.

[0036] According to a fifth aspect, a terminal device is provided that includes a transceiver, a processor, and memory. The processor is configured to control the transceiver to send and receive signals. The memory is configured to store a computer program. The processor is configured to invoke the computer program from memory and execute the computer program so that the terminal device performs the method described above in the first aspect.

[0037] According to a sixth aspect, a network device is provided that includes a transceiver, a processor, and memory. The processor is configured to control the transceiver to send and receive signals. The memory is configured to store a computer program. The processor is configured to invoke the computer program from memory and execute the computer program so that the network device performs the method described above in the second aspect. Petition 870250077633, dated 01 / 09 / 2025, p. 117 / 201 16 / 90

[0038] According to a seventh aspect, a communications apparatus is provided. The communications apparatus may be the terminal device in the design of the preceding method or a chip located in the terminal device. The communications apparatus includes: a memory configured to store computer executable program code, a communications interface, and a processor coupled to the memory and the communications interface. The program code stored in memory includes an instruction. When the processor executes the instruction, the communications apparatus executes the method executed by the terminal device in any of the first aspect or possible implementations of the first aspect.

[0039] According to an eighth aspect, a communications apparatus is provided. The communications apparatus may be the network device in the design of the previous method or a chip located in the network device. The communications apparatus includes: a memory configured to store computer executable program code, a communications interface, and a processor coupled to the memory and the communications interface. The program code stored in the memory includes an instruction. When the processor executes the instruction, the communications apparatus executes the method executed by the network device in any of the second aspect or possible implementations of the second aspect.

[0040] According to a ninth aspect, a computer program product is provided. The computer program product includes computer program code. When the computer program code is executed on a computer, the computer executes the methods in the previous aspects.

[0041] According to a tenth aspect, a computer-readable medium is provided. The computer-readable medium stores the program code. When the program code is executed on a Petition 870250077633, dated 01 / 09 / 2025, page 118 / 201 17 / 90 computer, the computer executes the methods in the previous aspects.

[0042] According to an eleventh aspect, a chip is provided that includes a processor and memory. The memory is configured to store a computer program. The processor is configured to invoke the computer program from memory and execute the computer program. The computer program is used to implement the methods in the previous aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 is a wireless communications system 100 to which an embodiment of the present application applies;

[0044] Figure 2 is a schematic numbering diagram of REGs in a resource control area in a time-first manner according to a modality of the present application;

[0045] Figure 3 is a schematic diagram of the numbering of REGs in a control resource area in a way by frequency first according to an embodiment of the present application;

[0046] Figure 4 is a schematic diagram of the numbering of REGs in a resource control area in a time-first manner according to a modality of the present application;

[0047] Figure 5 is a schematic diagram of the numbering of REGs consecutively only in the frequency domain according to a modality of the present request;

[0048] Figure 6 is a schematic flowchart of a communication method according to an embodiment of the present application;

[0049] Figure 7 is a schematic diagram of a mapping form 1 established based on a REG numbering method 1 according to an embodiment of the present application;

[0050] Figure 8 is a schematic diagram of a form of Petition 870250077633, dated 01 / 09 / 2025, page 119 / 201 18 / 90 mapping 1 established based on a REG numbering method 2 according to a modality of the present application;

[0051] Figure 9 is a schematic diagram of a mapping form 1 established based on a REG numbering method 3 according to an embodiment of the present application;

[0052] Figure 10 is a schematic diagram of a mapping form 2 established based on a REG numbering method 2 according to an embodiment of the present application;

[0053] Figure 11 is a schematic diagram of a mapping mode 3 established based on a REG numbering method 1 according to an embodiment of the present application;

[0054] Figure 12 is a schematic diagram of a mapping form 3 established based on a REG numbering method 1 according to an embodiment of the present application;

[0055] Figure 13 is a schematic diagram of a mapping form 4 established based on a REG numbering method 1 according to an embodiment of the present application;

[0056] Figure 14 is a schematic diagram of a mapping form 4 established based on a REG numbering method 1 according to an embodiment of the present application;

[0057] Figure 15 is a schematic diagram of a mapping form 5 established based on a REG numbering method 1 according to an embodiment of the present application;

[0058] Figure 16 is a schematic diagram of a mapping form 5 established based on a REG numbering method 2 according to an embodiment of the present application;

[0059] Figure 17 is a schematic diagram of a mapping mode 5 established based on a REG numbering method 3 according to an embodiment of the present application;

[0060] Figure 18 is a schematic diagram of a form of Petition 870250077633, dated 01 / 09 / 2025, page 120 / 201 19 / 90 mapping 6 established based on a REG numbering method 1 in accordance with a modality of the present application;

[0061] Figure 19 is a schematic diagram of a mapping form 6 established based on a REG numbering method 1 according to an embodiment of the present application;

[0062] Figure 20 is a schematic diagram of two forms of CCE to REG mapping distributed according to an embodiment of the present application;

[0063] Figure 21 is a schematic diagram of two forms of CCE to REG mapping distributed according to an embodiment of the present application;

[0064] Figure 22 is a schematic block diagram of a terminal device according to one embodiment of the present application;

[0065] Figure 23 is a schematic block diagram of a terminal device according to another embodiment of the present application;

[0066] Figure 24 is a schematic structural diagram of a network device according to an embodiment of the present application; and

[0067] Figure 25 is a schematic block diagram of a network device according to another embodiment of the present application. DESCRIPTION OF MODALITIES

[0068] The technical solutions of this application are described below with reference to the attached drawings.

[0069] Figure 1 is a wireless communications system 100 to which an embodiment of the present application applies. The wireless communications system 100 may include a network device 110. The network device 110 may be a device that communicates with a terminal device. The network device 110 may provide Petition 870250077633, dated 01 / 09 / 2025, page 121 / 201 20 / 90 communication coverage for a specific geographic area and can communicate with a terminal device located within the coverage area.

[0070] Figure 1 shows an example where there is one network device and two terminals. Optionally, the 100 wireless communications system may include a plurality of network devices and another number of terminals may be included in the coverage area of ​​each network device. This is not limited in this embodiment of the present application.

[0071] Optionally, the 100 wireless communications system may also include other network entities, such as a network controller and a mobility management entity. This is not limited in this embodiment of the present application.

[0072] It should be understood that the technical solutions of the present application can be applied to various communication systems, such as a Global System for Mobile Communications (GSM), a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS), a Long Term Evolution (LTE) system, a Long Term Evolution Advanced (LTE-a) system, a Universal Mobile Telecommunications System (UMTS), a New Radio Access (NR) technology and a 5G system.

[0073] It should also be understood that, in the modalities of the present application, the terminal device may include, but is not limited to, a mobile station (MS), a mobile terminal, a mobile phone, equipment of Petition 870250077633, dated 01 / 09 / 2025, page 122 / 201 21 / 90 user (User Equipment, UE), a telephone (handset), portable equipment, and so on. The terminal device can communicate with one or more major networks using a radio access network (RAN). For example, the terminal device can be a mobile phone (or referred to as a cell phone), a computer with a wireless communication function or similar; or the terminal device can be a portable, pocket-sized, mobile device, embedded in a computer, or a vehicular mobile device.

[0074] In the embodiments of this application, the network device may be an access network device, for example, it may be a base station, a Transmit and Receive Point (TRP), or an access point. The base station may be a Base Transceiver Station (BTS) in the GSM or CDMA system, it may be a Node B in the WCDMA system, it may be an evolved Node B (eNB, e-NodeB) in the LTE system, or it may be a gNodeB (gNB) in the NR or 5G system. This is not specifically limited in the embodiments of this application.

[0075] To facilitate understanding, the concepts related to the modalities of this request are first briefly described.

[0076] 1. Resource Element (RE): The smallest unit of resource. The resource element can correspond to a symbol in the time domain and can correspond to a subcarrier in the frequency domain. The resource element can be uniquely identified by a pair of indices (k, l), where k is a subcarrier index and l is a symbol index.

[0077] 2. Resource Block (RB): An RB occupies NRB are consecutive subcarriers in the frequency domain, where NRB is a positive integer and NRB is equal to 12. In the modes of Petition 870250077633, dated 01 / 09 / 2025, page 123 / 201 22 / 90 in this application, the RB can only be defined from the perspective of a resource in the frequency domain. In other words, the amount of time-domain resources occupied by the RB in the time domain is not limited.

[0078] 3. Symbol: The embodiments of this application do not limit the length of a symbol. The length of a symbol may vary according to the different subcarrier spacings. Symbols may include an uplink symbol and a downlink symbol. The uplink symbol may be designated as a Single Carrier-Frequency Division Multiple Access (SC-FDMA) symbol or an Orthogonal Frequency Division Multiplexing (OFDM) symbol. The downlink symbol may be designated as an OFDM symbol.

[0079] It should be noted that the symbol may also correspond to other forms of uplink multiple access or forms of downlink multiple access. This is not specifically limited in the embodiments of the present application.

[0080] 4. Transmission Duration: A transmission duration includes N symbols, where N is a positive integer. The embodiments of this application do not limit the length of a transmission duration, i.e., they do not limit a value of N. For example, a transmission duration may be a subframe, a slot, a mini-slot, or a short transmission duration (STD) (also referred to as a short transmission time interval (sTTI)). In an existing LTE system, a slot includes seven or six symbols and a subframe includes two slots.

[0081] In the NR system, the number of symbols included in a slot can be determined based on a type of cyclic prefix (Cyclic Petition 870250077633, dated 01 / 09 / 2025, page 124 / 201 23 / 90 A slot is a cyclic prefix (CP) and a value of μ. When μ equals 0, 1, 2, 3, 4, or 5 and the cyclic prefix is ​​a normal CP, a slot can include 7 or 14 symbols. When μ equals 2 and the cyclic prefix is ​​an extended CP, a slot can include 12 or 6 symbols. If a slot includes 14 symbols, a subframe can include slots where μ equals 0, 1, 2, 3, 4, or 5. For example, if μ equals 0, a subframe will include 14 symbols; If a slot includes 7 or 6 symbols, a subframe may include slots where μ equals 0, 1, or 2. For example, if μ equals 0, a subframe includes two slots, i.e., 14 symbols. The number of symbols included in a mini-slot is less than the number of symbols included in a slot. The number of symbols included in an STD or an sTTI is less than or equal to 7, for example, 2, 3, or 7.

[0082] 5. Downlink Control Channel: A downlink channel is used to carry control information. The downlink control channel in the embodiments of this application may be an sPDCCH, an NR-PDCCH, or another channel whose functions are similar to those of the downlink control channel and which are newly defined in a future communication protocol. sPDCCH (short PDCCH or reduced PDCCH) indicates a downlink control channel that occupies a time domain resource that is less than or equal to 0.5 ms. NR-PDCCH (new radio PDCCH) indicates a downlink control channel defined in the NR system. The embodiments of this application do not limit a type or name of downlink control channel, and all downlink control channels are collectively referred to as PDCCHs.

[0083] Specifically, the PDCCH in the embodiments of the present application may alternatively be a PDCCH based on a cell-specific reference signal (CRS) or a PDCCH based on a demodulation reference signal. Petition 870250077633, dated 01 / 09 / 2025, page 125 / 201 24 / 90 (Demodulation Reference Signal, DMRS). A CRS-based PDCCH can be a demodulated CRS-based PDCCH, and a DMRS-based PDCCH can be a demodulated DMRS-based PDCCH. The CRS is a Reference Signal (RS) configured by the network device for all terminal devices in a cell. The DMRS is an RS configured by the network device for a specific terminal device and can also be referred to as a User Equipment-Specific Reference Signal (URS).

[0084] It should be noted that a PDCCH defined in the NR system may be the PDCCH based on previous DMRS.

[0085] 6. Aggregation Level (AL): An aggregation level can indicate the number of consecutive CCEs occupied by a PDCCH. In other words, a downlink control channel is obtained by aggregating L downlink control channel elements (CCEs), where L is a positive integer. One can say that the aggregation level of the PDCCH is L. Specifically, a value of L can be 1, 2, 4, or 8. It should be noted that, to improve the reliability of the PDCCH, the value of L can be 16 or 32.

[0086] 7. Resource-Element Group (Resource-Element) (Group, REG): Occupies one symbol in the time domain and occupies one RB resource block in the frequency domain. In other words, a frequency interval occupied by a REG in the frequency domain is equal to a frequency interval occupied by an RB in the frequency domain. For example, a REG might include 12 consecutive subcarriers in the frequency domain. It should be noted that when the 12 consecutive subcarriers include an RE transmitting a CRS or a DMRS, the number of REs that can actually transmit a downlink control channel is reduced. Petition 870250077633, dated 01 / 09 / 2025, p. 126 / 201 25 / 90 rather than 12.

[0087] 8. CCE: A CCE can include NREGs, where N is a positive integer. For example, an NREE value can be 3, 4, or 6.

[0088] 9. Search space: a set of candidate downlink control channels. A search space can be understood as a combination of one or more candidate downlink control channels. Each candidate downlink control channel can be used to carry downlink control information. The terminal device needs to monitor the candidate downlink control channel. Therefore, the search space is a set of candidate downlink control channels monitored by the terminal device.

[0089] 10. Control-resource Set CORESET): a set of resources used to transmit downlink control information. The control resource set may also be referred to as a control resource area or a PDCCH resource set.

[0090] It should be noted that one or more sets of control features may be configured for a terminal device. Without loss of generality, the following is described using a first control feature area in at least one set of control features configured for the terminal device as an example. The first set of control features occupies n69''-'-' feature blocks in the frequency domain and the first set of rCORESET control features includes Nsymbsyms in the time domain, where nc°reseté is a positive integer and NPRESET is a positive integer. III Λ rCORESET I Λ Λ Λ For example, an Nsymb value can be 1, 2, or 3. The first set of control features includes NRORESET REGs, where NRORESET Petition 870250077633, dated 01 / 09 / 2025, page 127 / 201 26 / 90 is a positive integer. The first set of control features includes N <cc>RESETCCEs, where NCORESET is a positive integer ~ aj-CORESET _ Iaí-CORESET / TirCCE I , λτ-CORESET _ λτ-CORESET / ΛT-CCEe NCCE -LNREG / NREG _or NCCE- NREG / NREG ·

[0091] 11. REG Bundle: For a DMRS-based PDCCH, the terminal device can consider that the same precoding is used in a REG bundle. In other words, joint channel estimation can be performed on a REG bundle. A 7-REG-bundle rREG-bundle REGs includes NREG REGs, where NREG is a positive integer. For example, NRfG'bundle equals 2, 3, or 6. Optionally, a grouping of REGs includes NREG'bundleREGs numbered consecutively. A CCE includes NRCEG'bundlegroupings of REGs, Λτ-REG-bundle atCCE atCCE ArREG-bundle where Nreg is a positive integer and Nreg-NREG-bundle ≠ Nreg. The first set of control features includes NRCEG!-bundle groupings of REGs, where NRESk is a positive integer and at-CORESET I at-CORESET / iT-REG-bundle IAt-CORESETAt-CORESET / A7-REG-bundleNREG-bundle-LNREG / NREG _ orNREG-bundle- NREG / NREG .

[0092] It should be noted that the first set of control features can be indicated as a set xp. Correspondingly, CORESET in mathematical expressions can be replaced by xp. For example, n, / 01^11 is equivalent to nX, Ns <ymRESETéeauivalente aNNC0RESETé eauivalente a N' NC0RESETé é equivalente aNsymb ,7VREGéequivalente aNrEg ,7VCCEéx — at-Xq atCORESET x _ __ aíX» equivalente aN<Ce eNREG-bundle é equivalente aNREpG-bundle.

[0093] The following describes in detail methods for numbering REGs in a set of control features with reference to Figure 2 to Figure 5. It should be noted that the following describes the methods of numbering REGs merely using an example in which a Petition 870250077633, dated 01 / 09 / 2025, page 128 / 201 27 / 90 The plurality of REGs included in a control feature set (e.g., the first control feature set) occupies two symbols. However, the specific number of symbols included in a control feature set is not specifically limited in this application. REG numbering method 1:

[0094] Time first. To be specific, the REGs are numbered in ascending time order. In other words, the REGs in the first set of control features are numbered in ascending time-first-frequency second order. In the first set of control features, a REG located at a first symbol in the time domain and at an RB with the lowest number in the frequency domain is numbered 0, and two adjacent REGs in the frequency domain are numbered non-consecutively. The number of REGs at each symbol in the first set of control features increases in the same direction as the number of RBs in the first set of control features, or the number of REGs at each symbol in the first set of control features increases in the same direction. For example, Figure 2 is a schematic diagram of the numbering of REGs in a control feature area in a time-first manner according to an embodiment of the present application.

[0095] Furthermore, the previous method of numbering REGs by time first can also be applied to a case where a REG in the first set of control features occupies only one symbol in the time domain, i.e., NSy2JESET is equal to 1 and REGs in the first set of control features can be numbered in ascending order of RB numbers. For example, Figure 4 is a schematic diagram of the numbering of REGs in a control feature area in a time-first manner according to an embodiment of the present application. Petition 870250077633, dated 01 / 09 / 2025, page 129 / 201 28 / 90 REG numbering method 2:

[0096] Frequency first, that is, the REGs are numbered in ascending order of frequency first. To be specific, the REGs in the first set of control features are numbered in ascending order of frequency first-time second. In the first set of control features, a REG located at a first symbol in the time domain and at an RB with the lowest number in the frequency domain is numbered 0, and two adjacent REGs in the time domain are numbered non-consecutively. For example, Figure 3 is a schematic diagram of the numbering of REGs in a control feature area in a frequency-first manner according to an embodiment of the present application.

[0097] Furthermore, the previous method of numbering REGs by frequency first can also be applied to a case where a REG in the first set of control features occupies only one symbol in the time domain, i.e., NSy°RESET is equal to 1 and REGs in the first set of control features can be numbered in ascending order of RB numbers. In other words, the number of REGs in the first set of control features increases in the same proportion as the number of RBs in the first set of control features. For example, Figure 4 is a schematic diagram of the numbering of REGs in a control feature area in a time-first manner according to an embodiment of the present application. REG 3 numbering method:

[0098] REGs are numbered only in the frequency domain. To be specific, the REGs in each symbol are numbered in ascending order of the number of RBs. In other words, the number of REGs in the first set of control features increases only in the frequency domain direction, and the number of REGs located in Petition 870250077633, dated 01 / 09 / 2025, page 130 / 201 29 / 90 different symbols that occupy the same frequency are the same, or the number of REGs that occupy different symbols in the time domain and occupy the same RB in the frequency domain are the same. For example, Figure 5 is a schematic diagram of numbering REGs consecutively only in the frequency domain according to an embodiment of the present application.

[0099] In other words, in the REG numbering method 3, if the REG in the first control resource area occupies a plurality of symbols in the time domain, two parameters are needed to determine the number of a REG: a number of a symbol in which the REG is located in the time domain and a number of the REG in the symbol.

[00100] Furthermore, the previous numbering method 3 can also be applied to a case where a REG in the first set of control features occupies only one symbol in the time domain, i.e., NSy°ibESETé equals 1 and REGs in the first set of control features can be numbered in ascending order of RB numbers. For example, Figure 4 is a schematic diagram of the numbering of REGs in a control feature area in a time-first manner according to an embodiment of the present application.

[00101] Next, a communication method in one embodiment of the present application is described in detail with reference to Figure 6 and the previous methods for numbering REGs in the first set of control resources.

[00102] Figure 6 is a schematic flowchart of a communication method according to an embodiment of the present application. The method shown in Figure 6 includes the following steps.

[00103] 610. A terminal device receives configuration information from a first set of control resources, where the configuration information from the first set of Petition 870250077633, dated 01 / 09 / 2025, page 131 / 201 30 / 90 control resources includes information about the mapping method of the first set of control resources.

[00104] Specifically, the mapping shape information of the first control feature set may also be referred to as the transmission type information of the first control feature set. The mapping shape information of the first control feature set may be used to indicate at least one of the following mapping modes: a mapping shape between a CCE and REGs in the first control feature set, a mapping shape between a candidate PDCCH included in a search space in the first control feature set and a CCE in the first control feature set, and a mapping relationship between a search space and a candidate PDCCH in the first control feature set.

[00105] Optionally, the information on mapping form indicates a distributed mapping form or a localized form, or the information on transmission type indicates a distributed transmission type or a localized transmission type. It should be noted that distributed may also be referred to as interleaved, and localized may also be referred to as non-interleaved. Therefore, distributed as mentioned in this embodiment of the present application may be replaced by interleaved, and localized may be replaced by non-interleaved.

[00106] Optionally, the mapping shape information indicates a time-distributed mapping shape, a frequency-distributed mapping shape, a time-localized mapping shape, or a time-localized mapping shape. Petition 870250077633, dated 01 / 09 / 2025, page 132 / 201 31 / 90

[00107] It should be understood that mapping shape information can directly indicate a mapping shape. For example, mapping shape information directly indicates that the mapping shape is time-first distributed mapping. Alternatively, mapping shape information can indicate a mapping shape using two pieces of information. For example, one piece of information indicates time-first or frequency-first, and the other piece indicates a localized mapping shape or a distributed mapping shape.

[00108] Optionally, the mapping form information indicates a distributed mapping form or a localized mapping form.

[00109] Optionally, the mapping shape information indicates a time-distributed mapping shape first, a frequency-distributed mapping shape, a time-localized mapping shape first, and a frequency-localized mapping shape first.

[00110] Optionally, the mapping form information is also used to indicate one of the following six mapping forms.

[00111] Optionally, a network device sends configuration information for the first set of control resources. The configuration information for the first set of control resources includes the mapping form information for the first set of control resources, and the mapping form information for the first set of control resources indicates the mapping form between the CCE and the REGs in the first set of control resources.

[00112] Specifically, the fact that the network device sends information about the configuration of the first set of control resources may include that the network device can send the information Petition 870250077633, dated 01 / 09 / 2025, page 133 / 201 32 / 90 regarding the configuration of the first control resource defined for the previous terminal device.

[00113] It should be noted that, alternatively, a source of information about the configuration of the first set of control resources may be another terminal device or a network device. This is not specifically limited in this embodiment of the present application.

[00114] 620. The terminal device determines, based on information about the mapping form of the first set of control resources, a mapping form between the control of a CCE channel element and groups of REG resource elements in the first set of control resources, where a REG in the first set of control resources occupies a symbol in the time domain and occupies a block of RB resources in the frequency domain.

[00115] In the communication method according to this embodiment of the present application, the CCE-to-REG mapping mode is determined based on a higher granularity than the RE granularity in a REG defined in the prior art. This helps to reduce a delay generated when a mapping relationship is determined between a CCE transmitting a PDCCH and a REG.

[00116] Optionally, if the above communication method is a communication method between a network device and the terminal device, prior to step 610, the method also includes:

[00117] 630. A network device determines the mapping form between the control channel element CCE and the resource element group REGs in the first control resource set, where a REG in the first control resource set occupies a symbol in the time domain and occupies a resource block RB in the frequency domain.

[00118] Specifically, the mapping method between the CCE and the Petition 870250077633, dated 01 / 09 / 2025, page 134 / 201 33 / 90 REGs in the first set of control resources are mapped using localized CCE-to-REG mapping, which is also referred to as non-interleaved CCE-to-REG mapping. Alternatively, the mapping method between the CCE and the REGs in the first set of control resources is distributed CCE-to-REG mapping, which is also referred to as interleaved CCE-to-REG mapping.

[00119] It should be understood that the CCE-to-REG distributed mapping can be understood as a plurality of REGs in each consecutive CCE in the time domain and distinctly distributed in the frequency domain, or distinctly distributed in the frequency domain and occupying only one symbol in the time domain, or are interleaved and distinctly distributed in both the time and frequency domains. All of mapping form 4, mapping form 5, and mapping form 6 below belong to the distributed mapping.

[00120] The mapping form between the CCE and the REGs in the first set of control features can be understood as a number of REGs in a CCE numbered n. The following describes in detail the mapping form between the CCE and the REGs in the first set of control features with reference to Figure 2 to Figure 4. It can be understood that the mapping between the CCE and the REG in the first set of control features can be any of the following mapping forms or a combination of a plurality of mapping forms of the following mapping forms. A specific way of combining the following mapping forms is not specifically limited in this embodiment of the present application. Petition 870250077633, dated 01 / 09 / 2025, p. 135 / 201 34 / 90

[00121] Optionally, the information about the mapping form of the first control feature set indicates that the mapping form of the first control feature set is localized mapping, i.e., non-interleaved mapping. It should be noted that the mapping form of the first control feature set is localized mapping and may include that the mapping form between the CCE and the REGs in the first control feature set is localized mapping and / or the mapping form between the candidate PDCCH included in the search space in the first control feature set and the CCE in the first control feature set is a localized mapping.

[00122] It should be noted that the localized mapping of CCE to REG can be understood as a plurality of REGs in each CCE that is consecutive in the time domain and / or in the frequency domain. For example, the plurality of REGs in each CCE is consecutive in both the time and frequency domains. For example, the plurality of REGs in each CCE occupies the same symbol and is consecutive in the frequency domain. All of the following mapping forms 1, 2, and 3 belong to localized mapping. Mapping Form 1:

[00123] Each CCE in the first set of control features includes a plurality of consecutive REGs in the frequency domain, and the plurality of REGs included in each CCE is located in the same symbol. When N^E8ETE equals 1, the CCEs in the first set of control features are numbered in ascending ArCORESET order of RB numbers in the frequency domain. When 1 symbol is greater than 1, the CCEs in the first set of control features are numbered in a time-first order. In other words, the CCEs in the first set of control features are numbered consecutively in the time domain. The form of Petition 870250077633, dated 01 / 09 / 2025, page 136 / 201 35 / 90 mapping 1 can be referred to as half-time first localized mapping or non-interleaved half-time first mapping.

[00124] It should be noted that the CCEs in the first set of control features are numbered time first and two CCEs that occupy the same symbol and are adjacent to each other in the frequency domain are numbered non-consecutively.

[00125] Optionally, the information about the mapping form of the first set of control features indicates that the mapping form of the first set of control features is localized / non-interleaved mapping or localized / non-interleaved half-time first mapping.

[00126] Optionally, the REGs in a numbered CCE n in the first set of control resources are numbered ArCORESET . < AtCORESET . mNsymb + n mOd Nsymb + CORESET symbArCCE irCORESET ' N REG ' N symb (Formula 1) or REGs in a CCE numbered n in the first set of control resources are numbered m + (nmodNsCmRESET)·NCORESET+ n atCORESETvsymb •NCCE 7Vreg (Formula 2) or a numbered n CCE in the first set of control features contains numbered m + n REGs xrCORESETvsymb • NReg is located in a numbered symbol n mod NRmRESET (Formula 3), where C , ,rCCE , CE ,.,-CORESET . CORESET - .· . . . m = 0,1,...,nREG-1, n = 0,1,...,nCCE-1, Nsymb is the number of symbols included in the first set of control features, NREG is the number of REGs included in the numbered CCE n in the first set of control features, and nCCRESET is the number of CCEs included in the first set of control features. Petition 870250077633, dated 01 / 09 / 2025, p. 137 / 201 36 / 90

[00127] Optionally, NbEG'bundle is equal to NCCE. In this case, NCCE in formula 1, formula 2, and formula 3 can be replaced by NREG'bundle. In other words, the REG included in the n-numbered CCE is the same as the REGs in a cluster of n-numbered REGs. A n-numbered CCE includes only one cluster of n-numbered REGs. NRREEGG'bundle is a quantity of REGs included in each cluster of REGs in the first set of control features. This case is applicable only to a demodulated PDCCH based on a DMRS.

[00128] It should be noted that the N'''bISIT symbols included in the first set of control features are numbered in ascending order from symbol 0 to symbol N^E8ET-1.

[00129] Specifically, the number of REGs in the first set of control features is sorted using REG numbering method 1 and a mapping relationship between the CCE and the REG is established using formula 1 above, so that the CCE-to-REG mapping form is mapping form 1.

[00130] The number of REGs in the first set of control resources is sorted using the REG numbering method 2 and a mapping relationship between the CCE and the REG is established using the previous formula 2, so that the CCE-to-REG mapping form is the mapping form 1.

[00131] The number of REGs in the first set of control resources is sorted using REG numbering method 3 and a mapping relationship between the CCE and the REG is established using the previous formula 3, so that the CCE-to-REG mapping form is mapping form 1.

[00132] For example, Figure 7 is a schematic diagram of a mapping form 1 established based on a REG numbering method 1 according to an embodiment of the present Petition 870250077633, dated 01 / 09 / 2025, page 138 / 201 37 / 90 request. Figure 7 describes the mapping relationship between the CCE and the REG in the first set of control features using an example where the first set of control features occupies two symbols in the time domain and each CCE in the first set of control features includes three REGs. It can be obtained using formula 1 where a CCE numbered 0 (indicated as CCE 0) includes a REG numbered 0, a REG numbered 2 and a REG numbered 4; a CCE numbered 1 (indicated as CCE 1) includes a REG numbered 1, a REG numbered 3 and a REG numbered 5; and a CCE numbered 3 (indicated as CCE 3) includes a REG numbered 7, a REG numbered 9 and a REG numbered 11.

[00133] For another example, Figure 8 is a schematic diagram of a mapping form 1 established based on a REG numbering method 2 according to an embodiment of the present application. Figure 8 describes the mapping relationship between the CCE and the REG in the first set of control features using an example in which the first set of control features occupies two symbols in the time domain and each CCE in the first set of control features includes three REGs. It can be obtained using formula 2 where a CCE numbered 0 (indicated as CCE 0) includes a REG numbered 0, a REG numbered 1 and a REG numbered 2; a CCE numbered 1 (indicated as CCE 1) includes a REG numbered 24, a REG numbered 25 and a REG numbered 26; and a CCE numbered 3 (indicated as CCE 3) includes a REG numbered 27, a REG numbered 28 and a REG numbered 29.

[00134] For another example, Figure 9 is a schematic diagram of a mapping form 1 established based on a REG numbering method 3 according to an embodiment of the present application. Figure 9 describes the mapping relationship between the CCE and the REG in the first set of control features using an example. Petition 870250077633, dated 01 / 09 / 2025, page 139 / 201 38 / 90 in which the first set of control features occupies two symbols in the time domain and each CCE in the first set of control features includes three REGs. It can be obtained using formula 3 where a CCE numbered 0 (indicated as CCE 0) includes REGs that occupy a symbol 0 in the time domain and are, respectively, numbered 0, 1 and 2; a CCE numbered 1 (indicated as CCE 1) includes REGs that occupy a symbol 1 in the time domain and are, respectively, numbered 0, 1 and 2; and a CCE numbered 3 (indicated as CCE 3) includes REGs that occupy a symbol 1 in the time domain and are, respectively, numbered 3, 4 and 5.

[00135] It should be understood that the preceding formulas may still be used in combination with different REG numbering methods to implement different forms of CCE-to-REG mapping. A REG numbering method used in combination with the preceding formulas is not specifically limited in this embodiment of the present application.

[00136] In this embodiment of the present application, when the number of REGs included in a CCE is not an integer multiple of the number of symbols occupied by the first set of control resources, i.e., NRCE cannot be exactly divided by CORESET Nsymb, if mapping form 3 is used, the quantities of REGs in each symbol are not the same in a CCE. This is unfavorable to feature multiplexing. However, the CCE-to-REG mapping form of mapping form 1 is relatively normalized and is favorable to feature multiplexing. For example, a PDSCH feature can be multiplexed.

[00137] In addition, mapping form 1 can be applied to a CRS-based sPDCCH, a DMRS-based NR-PDCCH, or a DMRS-based sPDCCH. Mapping method 2: Petition 870250077633, dated 01 / 09 / 2025, page 140 / 201 39 / 90

[00138] Each CCE in the first set of control features includes a plurality of consecutive REGs in the frequency domain, and the plurality of REGs included in each CCE is located on the same symbol or, preferably, located on the same symbol. When N CORESET equals 1, the CCEs in the first set of control features are numbered in ascending order of RB numbers in the frequency domain. When N CORESET is greater than 1, the CCEs in the first set of control features are numbered in the frequency-first order. In other words, the CCEs in the first set of control features are numbered consecutively in the frequency-first domain. The mapping form 2 can be referred to as frequency-first localized mapping or non-interleaved frequency-first mapping.

[00139] It should be noted that the number of CCEs in each symbol in the first set of control features increases in the same direction.

[00140] Optionally, the information about the mapping form of the first set of control features indicates that the mapping form of the first set of control features is localized / non-interleaved mapping or localized / non-interleaved frequency-first mapping.

[00141] REGs in the first set of control resources are numbered in a frequency-first fashion, that is, numbered according to the REG 2 numbering method, and REGs in a CCE numbered n in the first set of control resources are numbered m+nNCCE (Formula 4), where m = 0, 1,..., nRCE -1, n = 0, 1,..., nCORNET -1, NRCE is the number of REGs included in the CCE numbered n in the first set of control resources, and nCORESET is the number of CCEs included in the first set of resources. Petition 870250077633, dated 01 / 09 / 2025, page 141 / 201 40 / 90 control.

[00142] Optionally, NREG'bundle is equal to NRCG. In this case, formula 4 can be equivalent to am + nNRREEGG'bundle, where m = 0,1,..., NREG'bundle-1. In other words, the REG included in the numbered CCE n is the same as the REGs in a numbered REG cluster. A numbered CCE n includes only a numbered REG cluster. NREG'bundle is the number of REGs included in each REG cluster in the first set of control features. This case is only applicable to a demodulated PDCCH based on a DMRS.

[00143] In mapping form 2 in this embodiment of the present application, a frequency-first form is used for REG classification and a CCE mapping form. This can simplify the calculation formula of the CCE-to-REG mapping form and help reduce the complexity of calculations on the terminal device.

[00144] For example, Figure 10 is a schematic diagram of a mapping form 2 established based on a REG numbering method 2 according to an embodiment of the present application. Figure 10 describes the mapping relationship between the CCE and the REG in the first set of control features using an example in which the first set of control features occupies two symbols in the time domain and each CCE in the first set of control features includes four REGs. It can be obtained using formula 4 where a CCE numbered 0 (indicated as CCE 0) includes REGs numbered 0, 1, 2 and 3 respectively; a CCE numbered 1 (indicated as CCE 1) includes REGs numbered 4, 5, 6 and 7 respectively; a CCE numbered 2 (indicated as CCE 2) includes REGs numbered 8, 9, 10 and 11 respectively; and a CCE numbered 3 (indicated as CCE 3) includes REGs numbered 12, 13, 14 and 15, respectively. Petition 870250077633, dated 01 / 09 / 2025, page 142 / 201 41 / 90

[00145] Optionally, the REGs in the first set of control features are numbered time first, i.e., numbered according to the REG numbering method 1, and the REGs in a CCE numbered n in the first set of control features are numbered CO ArCORESET . mNsymb + CORESET NCCE CORESETvsymb ( + n mod(l CORESET CCE CORESET sy mb ·) NCCE JVREG C ORESET symb zi-x i- ccx ___i- ci »rCCE . ,,-CORESET . atCCEx(Formula 15), where m = 0,1,...,nREG -1, n = 0,1,...,nCCE -1, NREG is the number of REGs included in the numbered CCE in the first set of control features and NCCCOERESET is the number of CCEs included in the first set of control features. Optionally, titCORESETNCCE / ___|_____|__... ____VCORESET CORESET can be replaced by Nrbvsymb / Ncce.1R REG

[00146] Optionally, NREG'bundle is equal to NRCE. In this case, NREJ in Formula 15 can be replaced by NREG'bundle. In other words, the REG included in the numbered n CCE is the same as REGs in a numbered n REG cluster. The numbered n CCE includes only one numbered n REG cluster. NRE <G'bundleé a quantidade de REGs incluídos em cada agrupamento de REGs no primeiro conjunto de recursos de controle. Este caso é aplicável apenas a um PDCCH desmodulado com base em um DMRS.

[00147] Formula 15 is more complex than Formula 4. However, this allows the REGs to be numbered only by time first in a system, i.e., according to the REG 1 numbering method.

[00148] In mapping form 2 in this embodiment of the present application, the REGs included in a CCE are preferably located in a symbol. This helps to reduce the time required. Petition 870250077633, dated 01 / 09 / 2025, p. 143 / 201 42 / 90 for decoding performed by the terminal device and to reduce latency. Preferably, mapping form 2 is applicable to a CRS-based PDCCH. Mapping method 3:

[00149] When N CORESET equals 1, each CCE in the first set of control features includes a plurality of consecutive REGs in the frequency domain, and the CCEs in the first set of control features are numbered in ascending order of RB numbers in the frequency domain of the CORESET. When 1 symbé greater than 1, each CCE in the first set of control features includes a plurality of consecutive REGs in both the time domain and the frequency domain, and the CCEs in the first set of control features are numbered in a time-first order, i.e., CCEs in the first set of control features are numbered consecutively in the time domain first. This mapping form can be termed time-first localized mapping or non-interleaved time-first mapping.

[00150] It should be noted that the CCEs in the first set of control resources may occupy at least one of the same symbol.

[00151] In mapping form 3 in this embodiment of the present application, when NS / ORESET is greater than 1, fewer frequency domain resources in the first set of control resources are occupied for mapping form 3 when compared with mapping form 2. This is favorable to resource multiplexing. For example, more frequency domain resources can be freed up for a PDSCH to use. Mapping form 3 can be applied to a CRS-based sPDCCH, a DMRS-based NR-PDCCH, or a DMRS-based sPDCCH.

[00152] Optionally, information on mapping method Petition 870250077633, dated 01 / 09 / 2025, page 144 / 201 43 / 90 of the first set of control features indicates that the mapping form of the first set of control features is localized / non-interleaved mapping or localized / non-interleaved time-first mapping.

[00153] REGs in the first set of control features are numbered in a time-first manner, that is, numbered according to the REG numbering method 1 and REGs in a CCE numbered n in the first set of control features are numbered m + nNCCE (Formula 4), where m = 0,1,..., NCCE -1, n = 0,1,..., NCCC^ET -1, NCCE is the number of REGs included in the CCE numbered n in the first set of control features and ncccese is a number of CCEs included in the first set of control features.

[00154] Optionally, NCCC'bundle is equal to NCCE. In this case, the Formula 4 can be equivalent to am + nNRCEGG'bundle, where m = 0, 1, ..., NCCC'bundle-1. In other words, REGs in a numbered REG cluster n is equal to the REGs included in the numbered CCE n. A numbered CCE n includes only one numbered REG cluster n. NC" is a quantity of REGs included in each REG cluster in the first set of control features. This case is applicable only to a demodulated PDCCH based on a DMRS, for example, a DMRS-based NR-PDCCH or a DMRS-based sPDCCH.

[00155] In mapping form 3 in this embodiment of the present application, a time-first form is used for a method of numbering REGs and for a CCE-to-REG mapping form. This helps to simplify the calculation formula for determining the CCE-to-REG mapping form and helps to reduce the Petition 870250077633, dated 01 / 09 / 2025, p. 145 / 201 44 / 90 complexity of calculations on the terminal device.

[00156] For example, Figure 11 is a schematic diagram of a mapping form 3 established based on a REG numbering method 1 according to an embodiment of the present application. Figure 11 describes the mapping relationship between the CCE and the REG in the first set of control features using an example in which the first set of control features occupies two symbols in the time domain and each CCE in the first set of control features includes four REGs. It can be obtained using Formula 4 where a CCE numbered 0 (indicated as CCE 0) includes REGs numbered 0, 1, 2 and 3 respectively; a CCE numbered 1 (indicated as CCE 1) includes REGs numbered 4, 5, 6 and 7 respectively; a CCE numbered 2 (indicated as CCE 2) includes REGs numbered 8, 9, 10 and 11 respectively; and a CCE numbered 3 (indicated as CCE 3) includes REGs numbered 12, 13, 14 and 15, respectively.

[00157] For another example, Figure 12 is a schematic diagram of a mapping form 3 established based on a REG numbering method 1 according to an embodiment of the present application. Figure 12 describes the mapping relationship between the CCE and the REG in the first set of control features using an example where the first set of control features occupies two symbols in the time domain and each CCE in the first set of control features includes three REGs. It can be obtained using Formula 4 where a CCE numbered 0 (indicated as CCE 0) includes REGs numbered 0, 1 and 2 respectively; a CCE numbered 1 (indicated as CCE 1) includes REGs numbered 3, 4 and 5 respectively; a CCE numbered 2 (indicated as CCE 2) includes REGs numbered 6, 7 and 8 respectively; and a CCE numbered 3 (indicated as CCE 3) includes REGs numbered 9, 10 and 11 respectively.

[00158] Optionally, REGs in the first set of resources of Petition 870250077633, dated 01 / 09 / 2025, page 146 / 201 45 / 90 controls are numbered in a time-first manner, that is, numbered according to the numbering method of REGs 1 and REGs in a CCE numbered n in the first set of control features are numbered (m+jN^^) + nNRR^N / '.' (Formula 5), ​​where EArCCE r ^REG-bundle ..CORESET Λ / CCEj- 0,1,...,NREQ-bundle1>m -θΛ-,NREG1> n-θ'1'···'NCCE1>NREG-bundle is the number of REG clusters included in each CCE in the REG-bundle first set of control features, NREG is the number of REGs included in each grouping of REGs in the first set of control features, NCCE is the number of REGs included in each CCE in the first set of control features, and N CORESET is the number of CCEs included in the first set of control features.

[00159] Optionally, Formula 5 can be described using two steps: a first step is to determine the REGs included in a REG cluster and a second step is to determine the REG clusters included in a CCE. Specifically, the REGs in a REG cluster numbered j in the first set of control features are numbered m + jNREG'bundle, where r = 0,1,..., NREG-bundle-1 and n = 0,1,...,NREG-1; a REG cluster included in a CCE numbered n in the first set of control features is numbered χ + nNREGLndR, where χ = 0,1,..., NREG-bundle-1 and n = 0,1,..., nCREG-bundle-1. If NCECGE-bundle equals 1, the REG cluster included in the CCE numbered n in the first set of control features is numbered n.

[00160] In this embodiment of the present application, the CCE-to-REG mapping method determined in Formula 5 above is applicable only to a demodulated PDCCH based on a DMRS, for example, a DMRS-based NR-PDCCH or an sPDCCH with Petition 870250077633, dated 01 / 09 / 2025, p. 147 / 201 46 / 90 based on DMRS. Mapping method 4:

[00161] When NSy°RESET is equal to 1, a CCE in the first set of control features includes a plurality of distinctly (or non-consecutively) distributed REGs in the frequency domain. When N Sy''REsET is greater than 1, each CCE in the first set of control features includes a plurality of consecutive REGs in the time domain and distinctly distributed REGs in the frequency domain. The mapping form 4 can be referred to as time-first distributed mapping or time-first interleaved mapping.

[00162] Optionally, the information about the mapping form of the first set of control resources indicates that the mapping form of the first set of control resources is distributed / interleaved mapping or distributed / interleaved time-first mapping.

[00163] Optionally, REGs in the first set of control features are numbered in a time-first fashion, that is, numbered according to the REG numbering method 1 and REGs in a CCE numbered n in the first set of control features are numbered l+n nsCyORESET+j , .CORESETNREG CCEN REGNCORESET ^Nsymb J (Formula 6), where l =01NCORESET-1 n - 0 1 NCORESET-1 0 - 0 1NREG 1NC0RESET is one -0,1,-,Nsymb1 , n 0,1,···,NCCE1 ,j- 0,1,···,—CORESET-1 , Nsymb is one NSymb is the number of symbols included in the first set of control features, nREGRESET is the number of REGs included in the first set of control features, NRCE is the number of REGs included in the Petition 870250077633, dated 01 / 09 / 2025, page 148 / 201 47 / 90 CORESET CCE CCE numbered n in the first set of control features, and N is the number of CCEs included in the first set of control features.

[00164] Alternatively, REGs in the first set of control features are numbered in a time-first fashion, that is, numbered according to the REG numbering method 1 and REGs in a CCE numbered n in the first set of control features are numbered 7 at-CORESET l + N symb · . n + j ^CORESETNRB_____ f NCCEΊ ---REG^CORESET ^ symb y (Formula 7), where ______ , T-CCE l =01 NCORESET- 1 n = 01 NCORESET- 1 ·_01NREG 1NCORESETé g1= 0,1,...,Nsymb1, no,',···,NCCE , j = 0,1,---,—CORESET-1 ,Vsymb is the number of symbols included in the first set of control features, NR°reseté is the number of RBs included in the first set of control features, NRCE is the number of REGs included in the CCE numbered n in the first set of control resources and NCCCOERESETé is the quantity of CCEs included in the first set of control resources.

[00165] Alternatively, the REGs in the first set of control features are numbered time first, i.e., numbered according to the REG numbering method 1, and the REGs in a CCE numbered n in the first set of control features are numbered m+n · nREG" + j xrCORESETNREG NCCE REG-bundle (Formula 8).

[00166] Alternatively, the REGs in the first set of control resources are numbered time-first, that is, numbered according to the REG numbering method 1 and when each Petition 870250077633, dated 01 / 09 / 2025, page 149 / 201 48 / 90 grouping of REGs in the first set of control features occupies an RB in the frequency domain, REGs in a numbered CCE n in the first set of control features are numbered „( re । Ά rREG-bundle „ . · m + Wpprn + j · REG J k itCORESET 'NRB____NCCE1 yREG-bundle J / (Formula 9), where j = 0,1,..., NCCG-bundle-1,n1 ArREG-bundle ,n1. .CORESET .ArREG-bundle . ... . . m = 0.1,..., NREG-1, n = 0.1,..., nCCE-1, NREG is the quantity of REGs included in each REG cluster in the first set of control features, NCCG-bundle is the number of REG clusters included in each CCE in the first set of control features, NCOESE is the number of REGs included in the first set of control features, n CORESET is the number of CCEs included in the first set of control features, and NCORESET is the number of RBs included in the first set of control features.

[00167] Specifically, the number of REGs in the first set of control features is sorted using REG numbering method 1, and the mapping relationship between the CCE and the REG is established using Formula 6, Formula 7, Formula 8, or Formula 9, such that the CCE-to-REG mapping form is mapping form 4. Formula 8 and Formula 9 are applicable only to a demodulated PDCCH based on a DMRS, for example, a DMRS-based NR-PDCCH or a DMRS-based SPDCCH.

[00168] For example, Figure 13 is a schematic diagram of a mapping form 4 established based on a REG numbering method 1 according to an embodiment of the present application. Figure 13 describes the mapping relationship between the CCE and the REG in the first set of control features using an example in which the first set of control features occupies two symbols in the time domain and each CCE in the first set of control features includes four REGs.For a brief description, just the... Petition 870250077633, dated 01 / 09 / 2025, p. 150 / 201 49 / 90 The REGs included in CCEs numbered 0 and 3 are listed. This can be obtained using Formula 6 or Formula 7, where CCE numbered 0 (indicated as CCE 0) includes REGs numbered 0, 1, 24, and 25, respectively; and CCE numbered 3 (indicated as CCE 3) includes REGs numbered 6, 7, 30, and 31, respectively.

[00169] For another example, Figure 14 is a schematic diagram of a mapping form 4 established based on a REG numbering method 1 according to an embodiment of the present application. Figure 14 describes the mapping relationship between the CCE and the REG in the first set of control features using an example in which the first set of control features occupies two symbols in the time domain and NREG = 6, = 3 and NREG'bundle = 2. For a brief description, only REGs included in CCEs numbered 0 and 3 are listed. The mapping relationship between the CCE and the REG can be obtained using Formula 8 as follows: the CCE numbered 0 (indicated as CCE 0) includes REGs numbered 0, 1, 16, 17, 32 and 33 respectively, and the CCE numbered 3 (indicated as CCE 3) includes REGs numbered 6, 7, 22, 23, 38 and 39 respectively.

[00170] Optionally, the REGs in the first set of control resources are numbered time first, i.e., numbered according to the REG numbering method 1 and the REGs included in a CCE can be obtained by performing two steps: a first step is to determine the REGs included in a grouping of REGs and a second step is to determine the packages of REGs included in a CCE.

[00171] Optionally, the REGs in a numbered REG-bundle j in the first set of control features are numbered r rREG-bundle irCORESET rCORESETA7-REG-bundle m + JNREG , where j = 0,1,...,NREG-bundle -1 or J = 0,1,^,LNreg / Nreg J em = 0,1,..., NREG-bundle-1; and a REG-bundle included in a CCE Petition 870250077633, dated 01 / 09 / 2025, page 151 / 201 50 / 90 numbered n in the first set of control resources is numbered . I it-CORESET / ατ-CCE I . ArCORESET . „ , atCCE , η + X ·|_NREG-bundle / NREG-bundleJ or n +X'NCCE ,where x= 0,1,-,NREG-bundle —1 and n = 0,1,..., NCORESET -1. This formula is especially applicable to a case TtrREG-bundle λτ-CCE where NRE is less than NREg.

[00172] For example, if the first set of control features occupies two symbols in the time domain, there are 24 REGs in total and a grouping of REGs includes two REGs, there are 12 groupings of REGs and the REGs included in a grouping of REGs 0 to a grouping of REGs 11 are, respectively, numbered {0, 1}, {2, 3}, {4, 5}, {6, 7}, {8, 9}, {10, 11}, {12, 13}, {14, 15}, {16, 17}, {18, 19}, {20, 21} and {22, 23}. It is assumed that each CCE includes three groupings of REGs, i.e., six REGs. Therefore, a CCE 0 includes 0, 4, and 8 REG clusters, a CCE 1 includes 1, 5, and 9 REG clusters, a CCE 2 includes 2, 6, and 10 REG clusters, and a CCE 3 includes 3, 7, and 11 REG clusters.

[00173] Optionally, the REGs in a numbered REG cluster j in the first set of control resources are numbered . 'ArREG-bundle . . " , a / CORESET , -Al I a / CORESET / AtREG-bundle I m + JNREG , where j =0,UNREG-bundle —1 or j =0,l,^,[NREG / NREG J em = 0,1,..., NREGbundle-1; and a grouping of REGs included in a CCE numbered n in the first set of control resources is numbered f (x, n, c) , where f (.) indicates an interleaver, x = 0,1,..., NCCE-bundle-1, n = 0,1,..., NC°rESET-1 and c is a positive integer greater than 1. For example, c is equal to 2, 3, 4, 6 or 8. For example, the terminal device determines that a value of c is 2, 3 or 6 based on the signaling received."

[00174] Optionally, a value of c indicates a PDCCH aggregation level greater than 1, for example, 2, 4, or 8. Optionally, if ArREG-bundle ~ „ AtREG-bundle „ ~ Nreg = 2, c = 3; or if Nreg = 3, c = 2. Petition 870250077633, dated 01 / 09 / 2025, page 152 / 201 51 / 90

[00175] Mapping form 4 in this embodiment of the present application can be applied to a CRS-based sPDCCH, a DMRS-based NRPDCCH, or a DMRS-based sPDCCH. When NPRESET is greater than 1, fewer frequency domain resources in the first set of control resources are occupied for the CCE-to-REG mapping form described in mapping form 4 when compared with mapping form 5 or mapping form 6. This is favorable to resource multiplexing. For example, more frequency domain resources can be freed up for a Physical Downlink Shared Channel (PDSCH) to use.

[00176] For mapping form 3 and / or mapping form 4, when the total number of all REGs in the first set of control features is not an integer multiple of the total number of REGs included in a CCE, some REGs cannot be used. Optionally, to avoid wasting REGs, the total number of REGs included in a symbol in the first set of control features is an integer multiple of the total number of REGs included in a CCE. In other words, N CO'R'S is an integer multiple of NRCE or nCEJESET= a NRCE, where a is a positive integer. Mapping method 5:

[00177] Each CCE in the first set of control features includes a plurality of REGs distributed distinctly (or non-consecutively) in the frequency domain, and the plurality of REGs included in each CCE are located in the same symbol. When N syOTSET is greater than 1, the CCEs in the first set of control features are numbered in a way that is frequency-first. In other words, the CCEs in the first set of control features Petition 870250077633, dated 01 / 09 / 2025, p. 153 / 201 52 / 90 are numbered in the frequency domain first. The 5-mapping pattern can be referred to as frequency-first distributed mapping or frequency-first interleaved mapping.

[00178] Optionally, the information about the mapping form of the first set of control features indicates that the mapping form of the first set of control features is distributed / interleaved mapping or distributed / interleaved frequency-first mapping.

[00179] Optionally, a numbered CCE n in the first set of control resources contains numbered REGs CORESETvsymb ( ( n mod ll , .CORESET Ό ——CORESET N symbol JJ n C ORESET '--------------------------CORESETl N symb J + m · n CORESET (Formula 10) or a CCE numbered n in the first set of control resources contains numbered REGs C .-ΟΙίΙΛΙΊ ' CORESET n mod N CCE--- + n mow CORESET + l N symb J n . CORESET N CCE--- C CORESET ls symb J ArCORESET •NRB CORESET N RB____NCCE7VREG (Formula 11), one CCE numbered n in the first set of control resources contains REGs numbered nmodΛ..CORESETλN CCE ..CORESET lvsymb J CORESET N RBNCCE7Vreg and located in a numbered symbol n f^CORESET ^ N CCE ^CORESET l N symb j (Formula 12), where n = 0,1,..., nCORSET m = 0,1,...,nRCG -1, NPRESET is the number of symbols included in the first set of control features, NRCECG is the number of Petition 870250077633, dated 01 / 09 / 2025, page 154 / 201 53 / 90 REGs included in the numbered CCE n in the first set of control resources, n CORESET is the number of CCEs included in the first set of control resources and nRORESET is a number of resource blocks included in the first set of control resources.

[00180] Specifically, the number of REGs in the first set of control features is sorted using REG numbering method 1 and the mapping relationship between the CCE and the REG is established using the previous Formula 10, so that the CCE-to-REG mapping form is mapping form 5.

[00181] The number of REGs in the first set of control resources is sorted using the REG numbering method 2 and the mapping relationship between the CCE and the REG is established using the previous Formula 11, so that the CCE-to-REG mapping form is the mapping form 5.

[00182] The number of REGs in the first set of control resources is sorted using REG numbering method 3 and the mapping relationship between the CCE and the REG is established using the previous Formula 12, so that the CCE-to-REG mapping form is mapping form 5.

[00183] For example, Figure 15 is a schematic diagram of a mapping form 5 established based on a REG numbering method 1 according to an embodiment of the present application. Figure 15 describes the mapping relationship between the CCE and the REG in the first set of control features using an example in which the first set of control features occupies two symbols in the time domain and each CCE in the first set of control features includes four REGs. For brevity, only the REGs included in the CCEs numbered 0, 3 and 6 are described. It can be obtained using Formula 10 where the CCE numbered 0 (indicated as CCE 0) includes REGs numbered 0, 12, 24 and 36, respectively; Petition 870250077633, dated 01 / 09 / 2025, page 155 / 201 54 / 90 the CCE numbered 3 (indicated as CCE 3) includes REGs numbered, respectively, 6, 18, 30 and 42; and the CCE numbered 6 (indicated as CCE 6) includes REGs numbered, respectively, 1, 13, 25 and 37.

[00184] For another example, Figure 16 is a schematic diagram of a mapping mode 5 established based on a REG numbering method 2 according to an embodiment of the present application. Figure 16 describes the mapping relationship between the CCE and the REG in the first set of control features using an example in which the first set of control features occupies two symbols in the time domain and each CCE in the first set of control features includes four REGs. For brevity, only the REGs included in the CCEs numbered 0, 3, and 6 are described. It can be obtained using Formula 11, where the CCE numbered 0 (indicated as CCE 0) includes REGs numbered 0, 6, 12, and 18, respectively; the CCE numbered 3 (indicated as CCE 3) includes REGs numbered 3, 9, 15, and 21, respectively; and CCE number 6 (indicated as CCE 6) includes REGs numbered 24, 30, 36 and 42, respectively.

[00185] For another example, Figure 17 is a schematic diagram of a mapping form 5 established based on a REG numbering method 3 according to an embodiment of the present application. Figure 17 describes the mapping relationship between the CCE and the REG in the first set of control features using an example in which the first set of control features occupies two symbols in the time domain and each CCE in the first set of control features includes four REGs. For brevity, only the REGs included in the CCEs numbered 0, 3, and 6 are described. It can be obtained using Formula 12, where the CCE numbered 0 (designated as CCE 0) includes REGs that occupy a symbol 0 in the time domain and are numbered 0, 6, 12, and 18, respectively; the CCE numbered 3 (indicated as CCE 3) includes REGs that occupy a Petition 870250077633, dated 01 / 09 / 2025, page 156 / 201 55 / 90 symbol 0 in the time domain and which are numbered 3, 9, 15 and 21 respectively; and the CCE numbered 6 (indicated as CCE 6) includes REGs that occupy a symbol 1 in the time domain and which are numbered 0, 6, 12 and 18 respectively.

[00186] Optionally, the REGs in the first set of control resources are numbered in the manner of frequency first, i.e., numbered according to the REG numbering method 2 and the number of REGs included in a CCE can be obtained by performing two steps: the first step is to determine the REGs included in a grouping of REGs and the second step is to determine the groupings of REGs included in a CCE.

[00187] Specifically, the REGs in a numbered REG cluster j in the first set of control features are numbered . ·τιrREG-bundle . . „ ,AtCORESET , ci IAzCORESET / ArREG-bundle I m + JNreg , where j = 0,1,..., NREG-bundle-1 or j = 0,1,..., LNreg / Nreg_ em = 0,1,..., NREGbundle-1; and a REG cluster included in a numbered CCE in the first set of control features is numberedArCORESET / AtCORESET k , / 1AtCORESET / AtCORESET IL zArCORSET / ArREG bundle, . n mod(LNcce / Nsymbol J) + [_n / LNcce / Nsymbol _U*(NRB / NREG „ IAzCORESET / vCCE I ___. „Λ1 AzCCE , .. mAzCORESET,X'LN REG-bundle / NREG-bundleJ >where x= 0,1,-, NREG-bundle1>n=04,—, NCCE Λ tCORESET ra···· 'II '1'1 'ai NsCyOmRbESET is the number of symbols included in the first set of control features, nCORESET is the number of CCEs included in the first set of control features, nbCORESET is the number of feature blocks included in the first set of control features, NbR^bundle is the number of REGs included in each REG grouping in the first set of control features, NREG-bimdte is the number of configurable REG groupings included in each CCE in the first set of control features, and NbCEGEuni is the number of REG groupings included in the Petition 870250077633, dated 01 / 09 / 2025, page 157 / 201 56 / 90 first set of control features.

[00188] Mapping form 5 in this embodiment of the present application is especially applicable to a CRS-based sPDCCH and a DMRS-based NR-PDCCH.

[00189] Optionally, in mapping mode 5, a numbered n CCE in the first set of control resources contains numbered nmod REGs. ..CORESET N RB____ NCCEJVREG CCE n 'NREG ..CORESET N RB CORESET N RB CORESET N RB____ NCCE JVREG (Formula o C \ c 1 ^CORESET λΛ, ..CCE , xrCCEx_ __.·. 31), where n = 0.1,..., nCCE-1, m = 0.1,..., nbEG-1, NREG is the quantity of REGs included in the numbered CCE n in the first set of control features, NCCCOERESET is the number of CCEs included in the first set of control features, en RORESET is the number of feature blocks included in the first set of control features, i.e., the total number of REGs included in a symbol in the first set of control features. As described above, CORESET can be replaced by xp. Therefore, Formula 31 can be equivalent to an mod NXpRBrbNCCE 7Vreg n NCCE n 7Vreg NXp RB fíB xTX„ • NJp + m RB Nxp RB RBNCCE 7Vreg (Formula 32). It should be noted that xpe m are merely symbols and can be replaced by xme j or similar. However, the cases ..... _ . . _ . _ _ _ ..... _ . . ,.X. The applicable uses of Formulas 31 and 32 are limited. When NB is not a . -X ... ...... atCCE . N* - , , ... an integer that is a multiple of NREG, that is, -&- is not an integer. NCCE7Vreg Formulas 31 and 32 are not applicable. For example, if the total number of REGs in a symbol is 31, that is, NRB equals 31, NREG equals 4, and the first set of control features includes two XT-CORESET symbols, that is, Nsymb = 2, the first set of control features will include 62 REGs. According to Formulas 31 and 32, the Petition 870250077633, dated 01 / 09 / 2025, p. 158 / 201 57 / 90 four REGs included in CCE 0 are REGs numbered 0, 7, 14 and 21 and the four REGs included in CCE 7 are also REGs numbered 0, 7, 14 and 21. Therefore, the formulas are applicable only to a case where NX— is an integer. nJVREG

[00190] To avoid a case similar to the overlap between CCE 0 and CCE 7, when Formulas 31 and 32 are used, the number of RBs in the first set of control features needs to be limited. Specifically, the total number of REGs included in a symbol in the first set of control features is an integer multiple of the total number of REGs included in a CCE. In other words, NX (i.e., Ncoreset) is an integer multiple of NCCG or NXp = a ·NCCE, RB y*·'*·'· ^^J***,NRB f ** ......V1I*I|WIV R v· R REG RB REG , NX responds to a is a positive integer. In this case, —is a number NCCEVREG positive integer.

[00191] To expand the scope of application of Formula 31 and Formula 32, a Formula 33 and a Formula 34 are introduced. A CCE numbered n in the first set of control features contains REGs numbered nmodvCORESETNRB NCCE7Vreg n ., CORESETNRBNCCE JVREG CORESET ·NRB+m · C ORESETNRBNCCE JVREG (Formula 33) or n modi NXp RB RBNCCE JVREG n Nxp RB RBNCCEJVREG · NX RB RB Nxp RB RBNCCE JVREG (Formula 34). In this case, CCE 0 includes REGs numbered 0, 7, 14, and 21, and CCE 7 includes REGs numbered 31, 38, 45, and 52. It should be noted that for explanations of the parameters of Formulas 33 and 34, reference may be made to Formulas 31 and 32 in the paragraph above. The details are not Petition 870250077633, dated 01 / 09 / 2025, p. 159 / 201 58 / 90 described here again.

[00192] It should be noted that Formula 11 has a wider scope of application than Formulas 31 and 32, and the case of overlap between CCE 0 and CCE 7 does not occur. As described above, in mapping form 5, the plurality of REGs included in each CCE is located in the same symbol, and the quantities of REGs included in different symbols are the same. Therefore, the quantities of CCEs included in different symbols are the same. In this case, ,7coreset NCCE ^CORESETvsymb is certainly a positive integer.

[00193] For Formula 11, Formula 31, Formula 32, Formula 33, and Formula 34, the REG numbers in the first set of control features are sorted using the REG numbering method 2, frequency first. That is, the REGs are numbered in ascending order by frequency first. To be specific, the REGs in the first set of control features are numbered in ascending order by frequency first-time second. Frequency first-time second means that the REGs are sorted first on all RBs in the frequency domain at one symbol, and then the REGs are sorted on all RBs in the time domain at the next symbol. For example, in the first set of control features, a REG located at a first symbol in the time domain and at an RB with the lowest number in the frequency domain is numbered 0, and two adjacent REGs in the time domain are numbered non-consecutively.For example, in the first set of control features, the number of REGs located in a first symbol increases in ascending order of RB numbers in the first set of control features, and the number of REGs located in a second symbol increases in descending order of RB numbers in the first set of control features. Petition 870250077633, dated 01 / 09 / 2025, page 160 / 201 59 / 90

[00194] For mapping form 5, when the total number of REGs included in a symbol is not an integer multiple of the total number of REGs included in a CCE, some REGs cannot be used. Optionally, to avoid wasting REGs, the total number of REGs included in a symbol in the first set of control features is an integer multiple of the number . . . .___.... _____ . . ,X'. . total number of REGs included in a CCE. In other words, NRB (i.e., CE .HT-CCE x-,X„ ..CCE ncoreset ) is an integer multiple of Nregou Nrb= a Nreg, where a is a positive integer. In this case, NxRBrb ncce JVREG is a positive integer. _ . ........... For example, if the total number of REGs in a symbol is 28, NRB equals 28 and NREG equals 4.

[00195] Mapping form 6:

[00196] When N PRESET equals 1, each CCE in the first set of control features includes a plurality of distinctly (or non-consecutively) distributed REGs in the frequency domain. When N PRESET is greater than 1, each CCE in the first set of control features includes a plurality of interleaved REGs distinctly (or non-consecutively) distributed REGs in both the time and frequency domains. Mapping mode 6 can be termed as interleaved time-frequency distributed / interleaved mapping.

[00197] Optionally, the information about the mapping form of the first set of control features indicates that the mapping mode of the first set of control features is distributed / interleaved mapping or distributed / interleaved time-frequency interleaved mapping.

[00198] Optionally, REGs in the first set of control resources are numbered in a time-first order, that is, Petition 870250077633, dated 01 / 09 / 2025, page 161 / 201 60 / 90 numbered according to the REG numbering method 1 and REGs in a CCE numbered n in the first set of control resources are numbered ., CORESETvsymb n ..CORE.SE.t'vsymb CORESET CORESET +(m + n )mod Nsymb + m · Ncce i_ CO\ λλΛλ λ 1 atCORESET < c I λ / CCE < titCORESET ' (Formula 13), where— 0,1,...,Ncce -1,m —0,1,---,Nreg -1,Nsymb is the number of symbols included in the first set of control features, NCCCOERESET is the number of CCEs included in the first set of control features, NjCORESET is the number of REGs included in the first set of control features and NREE is the number of REGs included in the CCE numbered n in the first set of control resources.

[00199] Alternatively, REGs in the first set of control features are numbered in a time-first fashion, that is, numbered according to the REG numbering method 1 and REGs in a CCE numbered n in the first set of control features are numbered ..CORESETNsymb · nm0d C ,,CORESET λΑ NCCE--NCORESET V symb 7 J CORESETNCCE -..CORESET symb modNb + m ·NcR (Formula 14), CORESET CCE CORESET where n — 0,1,...,ncce-1, m — 0,1,...,nREG -1, Nsymb is the number of symbols included in the first set of control features, NCORESET is the number of CCEs included in the first set of control features, NCORESET is the number of REGs included in the first set of control features and NREE is the number of REGs included in the numbered CCE n in the first set of control features.

[00200] Mapping form 6 in this modality of this application is especially applicable to a CRS-based sPDCCH and Petition 870250077633, dated 01 / 09 / 2025, p. 162 / 201 61 / 90 is a DMRS-based NR-PDCCH.

[00201] For example, Figure 18 is a schematic diagram of a mapping form 6 established based on a REG numbering method 1 according to an embodiment of the present application. Figure 18 describes the mapping relationship between the CCE and the REG in the first set of control features using an example in which the first set of control features occupies two symbols in the time domain and each CCE in the first set of control features includes four REGs. For brevity, only the REGs included in the CCEs numbered 0, 3, and 6 are described. It can be obtained using Formula 13, where the CCE numbered 0 (indicated as CCE 0) includes REGs numbered 0, 13, 24, and 37, respectively; the CCE numbered 3 (indicated as CCE 3) includes REGs numbered 3, 14, 27, and 38, respectively; and CCE number 6 (indicated as CCE 6) includes REGs numbered 6, 19, 30 and 43, respectively.

[00202] For another example, Figure 19 is a schematic diagram of a mapping form 6 established based on a REG numbering method 1 according to an embodiment of the present application. Figure 19 describes the mapping relationship between the CCE and the REG in the first set of control features using an example in which the first set of control features occupies two symbols in the time domain and each CCE in the first set of control features includes four REGs. For brevity, only the REGs included in the CCEs numbered 0, 3, and 6 are described. It can be obtained using Formula 14, where the CCE numbered 0 (CCE 0) includes REGs numbered 0, 13, 24, and 37, respectively; the CCE numbered 3 (CCE 3) includes REGs 6, 19, 30, and 43, respectively; and CCE numbered 6 (CCE 6) includes REGs numbered 1, 12, 25 and 36, respectively.

[00203] There is a PDCCH and an EPDCCH in a Long Term Evolution (LTE) system. The PDCCH is demodulated. Petition 870250077633, dated 01 / 09 / 2025, page 163 / 201 62 / 90 based on a CRS has only one feature mapping form and appears only once per millisecond. Therefore, PDCCH is not applicable to a low-latency case, and the feature mapping form cannot be used for a demodulated PDCCH based on a DMRS. EPDCCH is demodulated based on a DMRS, also appears only once per millisecond, and includes more than seven symbols in the time domain. Therefore, EPDCCH is not applicable to a low-latency case. However, the plurality of mapping modes in the modalities of this application can be randomly combined to form a set of mapping forms. In this way, appropriate mapping forms can be selected based on different service transmission requirements.Therefore, according to the communication method in which a target mapping form is determined using the mapping form defined in this embodiment of the present application, a set of control resources and the mapping form of the set of control resources can be configured with more flexibility. This helps to improve transmission efficiency.

[00204] Mapping form 7:

[00205] The information about the mapping form of the first set of control resources indicates that the mapping form of the first set of control resources is distributed / interleaved mapping and the information about the grouping of REGs in the configuration information of the first set of control resources indicates that NREE'bundle is equal to NRCE, for example, it indicates that iirREG-bundleNreg is equal to 6.

[00206] In this case, each CCE in the first set of control resources includes consecutive NRCE REGs in the time domain and / or in the Petition 870250077633, dated 01 / 09 / 2025, page 164 / 201 63 / 90 frequency domain and two consecutively numbered CCEs are located in non-consecutive frequency domain features.

[00207] Optionally, the REGs in the first set of control resources are numbered time first, i.e., numbered according to the REG numbering method 2 and the number of REGs included in a CCE can be obtained by performing two steps: the first step is to determine the REGs included in a grouping of REGs and the second step is to determine the groupings of REGs included in a CCE.

[00208] Specifically, the REGs in a numbered REG cluster j in the first set of control features are numbered ,,, i 7\ τ-REG-bundle .Λ1irCORESET ,Λι, · I iirCORESET / iirREG-bundle I m + JNREG , where j = 0,1,..., N REG-bundle- 1 or j = 0,1,..., LNREG / NREG _| RRR Λ 7REG-bundle . em = 0,1,..., N REG -1.

[00209] The method for determining the REG clusters included in a CCE in the second step is either method 1 or method 2:

[00210] Method 1: The REG clusters included in a numbered n CCE in the first set of control features are determined based on a row-in-column interleaved form of REG clusters. In other words, the REG clusters are written row by row and then read column by column in correspondence with the CCE. A REG cluster is inserted into the interleaver and a REG cluster that corresponds to the CCE is emitted.

[00211] Method 2: A grouping of REGs included in a CCE numbered n in the first set of control resources is numbered f(n, c), where f(.) is an interleaver, n = 0, 1, ..., N CORESET -1 and c is a positive integer greater than 1. For example, c is equal to 2, 3, 4, 6, or 8. For example, the terminal device determines that the value Petition 870250077633, dated 01 / 09 / 2025, p. 165 / 201 64 / 90 of c is 2, 3, or 6 based on the signal received. Optionally, the value of c indicates a PDCCH aggregation level greater than 1, for example, 2, 4, or 8. For example, sef(n,c) = _n / cJ+_NRORESE / .. cJ•(n mod c) , the grouping of REGs included in the numbered CCE n in the first set of control features is numbered _n / cJ+1_NCORbUEdie / cJ·(nmodc), where n = 0,1,..., NCORESET-1. For example, if the first set of control resources includes eight REG clusters and c equals 2, a CCE 0 to a CCE 8 will correspond, respectively, to a REG cluster 0, a REG cluster 4, a REG cluster 1, a REG cluster 5, a REG cluster 2, a REG cluster 6, a REG cluster 3, and a REG cluster 7.If c equals 4, a CCE 0 to a CCE 8 will correspond, respectively, to a grouping of REGs 0, a grouping of REGs 2, a grouping of REGs 4, a grouping of REGs 6, a grouping of REGs 1, a grouping of REGs 3, a grouping of REGs 5, and a grouping of REGs 7.

[00212] Mapping form 7 and localized mapping form are well compatible. In other words, there is a low probability of PDCCH blockage when both mapping forms are used. Optionally, when mapping form 7 is used, a candidate PDCCH (mentioned below) numbered m includes L consecutively numbered CCEs.

[00213] Optionally, in one embodiment, the first search space is located in the first set of control resources, the first search space includes M$ candidate PDCCHs with an aggregation level L, a candidate PDCCH numbered m is one of the M} candidate PDCCHs with the aggregation level L and the terminal device determines, based on information about the mapping shape of Petition 870250077633, dated 01 / 09 / 2025, page 166 / 201 65 / 90 first set of control resources, the L CCEs included in the candidate PDCCH numbered m in the first search space.

[00214] The information on the mapping form of the first set of control features indicates that the mapping form of the first set of control features is localized / non-interleaved mapping and the L CCEs included in the candidate PDCCH numbered m are consecutive in the time domain and / or frequency domain or the L CCEs are numbered consecutively.

[00215] Optionally, in one embodiment, the information about the mapping form of the first set of control features indicates that the mapping form of the first set of control features is distributed / interleaved mapping and, if L equals 2, the candidate PDCCH numbered m includes two consecutively numbered CCEs; or if L greater than 2, the candidate PDCCH numbered m includes L CCEs and at least two CCEs in the L CCEs are numbered non-consecutively.

[00216] Optionally, the mapping form of the first set of control resources is distributed / interleaved time-first mapping, the CCE-to-REG mapping form is mapping form 4, and during a transmission period k, a CCE included in the candidate PDCCH numbered m of a first search space (L) with an aggregation level L is numbered L{(Ypk + m')modLNCCE,p,k / LJ} + N C(E.CE, p, k L + i mod 2 where i = 0,···,£-! NCCE,p,k indicates the total number of CCEs included in the first set of control resources (which can be denoted by p) during the transmission period. K,p,k indicates the number of an initial CCE in the first search space during the transmission period of k. Petition 870250077633, dated 01 / 09 / 2025, p. 167 / 201 66 / 90 m'~m+m(L) ·nc / , nc / indicaumidentificador de operarm 0,1'Mp 1eM(lL) é a quantidade de PDCCHs candidatos com um nível de agregação L no primeiro espaço de busca.

[00217] It should be noted that the initial CCE number in the first search space during the k transmission period can be set by the network device and then notified to the terminal device using upper layer signaling.

[00218] Optionally, in one embodiment, the mapping form of the first set of control resources is frequency-distributed mapping (also known as interleaved mapping) and the CCE-to-REG mapping form is mapping form 5. During a transmission period k, a CCE included in the candidate PDCCH numbered m in a first search space (L) with an aggregation level L is numbered as follows: L|(Y^k+ m ')mod [ NCCE, p, k / LjJ + | c / a^CORESET .T NCCE, p, k1Nsymb *L+ i mod 2 se ouL\(YL,k +m,)modLNCCE,p,k / LJJ + + i mod 2 se NCCE,p,k1Ns™ < L,where i-0,z-1, Ncce,p,k is the number of CCEs included in the first set of control features (which can be indicated by p) during the transmission period k, YpL,k is a number of the initial CCE in the first search space during the transmission period ke nsymRESET is the number of symbols included in the first set of control features.

[00219] It should be noted that the initial CCE number Y^k in the first search space during transmission period k may be Petition 870250077633, dated 01 / 09 / 2025, page 168 / 201 67 / 90 configured by the network device and then notified to the terminal device using upper-layer signaling.

[00220] Optionally, in one embodiment, a first PDCCH is transmitted in a first CCE and a second CCE in the first set of control resources, the mapping forms of the first CCE and the second CCE in the first set of control resources are distributed mapping, a first REG in the first CCE and a second REG in the second CCE are consecutive in the frequency domain, a number of the first REG and a number of the second REG are adjacent numbers, and the first CCE and the second CCE belong to the first search space. The method also includes: performing, by the terminal device in the first search space, blind detection in the first PDCCH.

[00221] For example, Figure 20 is a schematic diagram of two forms of distributed CCE-to-REG mapping according to an embodiment of the present application. Figure 20 describes two types of distributed mapping using only one example in which the aggregation level of a PDCCH is 2. It can be inferred from Figure 20 that if four REGs are included in each CCE in the first set of control resources, in a first form of distributed mapping, a CCE numbered 0 (denoted as a CCE 0) includes REGs numbered 0, 6, 12 and 18, a CCE numbered 1 (denoted as a CCE 1) includes REGs numbered 3, 9, 15 and 21, and other PDCCHs cannot be transmitted using an unoccupied REG. However, in a second form of distributed mapping, a CCE 0 can include REGs numbered 0, 6, 12, and 18, and a CCE 1 includes REGs numbered 1, 7, 13, and 19. It can be inferred that unoccupied REGs numbered 2, 3, 4, and 5 can form a CCE to transmit other PDCCHs.Therefore, the second distributed mapping can improve resource utilization when compared to the first mapping. Petition 870250077633, dated 01 / 09 / 2025, page 169 / 201 68 / 90 distributed.

[00222] Optionally, in one embodiment, a form of CCE mapping in the first set of control resources is distributed mapping, a second PDCCH is transmitted in L CCEs in the first set of control resources, L > 2, the L CCEs include at least one set of REGs, the set of REGs includes a third REG and a fourth REG that are numbered adjacently, the third REG and the fourth REG are consecutive in the frequency domain, the third REG and the fourth REG belong, respectively, to two CCEs numbered adjacently, the L CCEs include at least two sets of REGs that are not consecutive in the frequency domain, and the L CCEs belong to a second search space. The method also includes: performing, by the terminal device in the second search space, blind detection in the second PDCCH.

[00223] For example, Figure 21 is a schematic diagram of two forms of distributed CCE-to-REG mapping according to an embodiment of the present application. Figure 21 describes the two types of distributed mapping using only an example in which the aggregation level of a PDCCH is 4. It can be inferred from Figure 21 that if four REGs are included in each CCE in the first set of control features, in a first form of distributed mapping, frequencies occupied by REGs in four CCEs transmitting a PDCCH are densely distributed in the frequency domain. However, in a second form of distributed mapping, it can be inferred that the frequencies occupied by REGs in four CCEs transmitting a PDCCH are distinctly distributed in the frequency domain. Therefore, the second distributed mapping helps to improve the signal transmission quality compared to the first distributed mapping.

[00224] The network device can configure one or more spaces Petition 870250077633, dated 01 / 09 / 2025, page 170 / 201 69 / 90 search for a terminal device. Certainly, the network device can also configure a single search space or a plurality of different search spaces for a plurality of terminal devices served by the network device. Different mapping methods can be used for CCEs included in the plurality of search spaces configured for a terminal device. Different mapping methods can also be used for CCEs included in the plurality of search spaces configured for the plurality of terminal devices. Furthermore, regardless of the plurality of search spaces for a terminal device or the plurality of search spaces for the plurality of terminal devices, the network device can configure partially or fully overlapping time-frequency resources in the plurality of search spaces.In this case, the coexistence of multiple search spaces when different forms of CCE mapping are used must be considered. For example, it is necessary to consider how to reduce the blocking probability of PDCCH. In this embodiment of the present application, when L equals 2, the blocking between a localized mapping form and a distributed mapping form can be reduced. However, for an aggregation level greater than 2, to improve the reception performance of PDCCH, a greater diversity gain in the frequency domain is necessary, and such a solution can be used to achieve this goal. Furthermore, considering the relatively low probability of occurrence of a PDCCH with a high aggregation level, the impact is small.

[00225] The preceding described in detail the communication methods according to the embodiments of the present application with reference to Figure 1 to Figure 21. The following describes in detail apparatus according to embodiments of the present application with Petition 870250077633, dated 01 / 09 / 2025, p. 171 / 201 70 / 90 refers to Figure 22 to Figure 25. It should be understood that the devices shown in Figure 22 to Figure 25 can perform the steps in Figure 6. In other words, the devices can perform all the methods in the previous embodiments. Therefore, for specific details about the devices, please refer to the descriptions in the previous embodiments. To avoid repetition, details are not described here again.

[00226] Figure 22 is a schematic block diagram of a terminal device according to an embodiment of the present application. A terminal device 2200 shown in Figure 22 includes a receiving unit 2210 and a determination unit 2220.

[00227] Receiver unit 2210 is configured to receive configuration information for a first set of control resources, where the configuration information for the first set of control resources includes information about the mapping method of the first set of control resources.

[00228] The determination unit 2220 is configured to determine, based on the mapping shape information of the first set of control resources that is received by the receiving unit, a mapping shape between the control channel element CCE and groups of resource elements REGs in the first set of control resources, wherein a REG in the first set of control resources occupies a symbol in the time domain and occupies a resource block RB in the frequency domain.

[00229] Optionally, in one embodiment, the information on the mapping form of the first set of control features indicates that the mapping form of the first set of control features is localized mapping, each CCE in the first set of control features includes a plurality of consecutive REGs in the frequency domain, and the plurality of REGs included in each CCE Petition 870250077633, dated 01 / 09 / 2025, page 172 / 201 71 / 90 is located in the same symbol.

[00230] Optionally, in one embodiment, the REGs in a CCE numbered n in the first set of control resources are numbered m · N+ n mod N+ n ^CORESET 'symb CCE CORESET • NREG · Nsymb Or REGs in a CCE numbered n in the first set of control features are numbered m + (n mod N™T) · NRBORESET+ n ΛT-CORESET ' symb • Nou a CCE numbered n in the first set of control resources contains REGs numbered m + n λ .CORESET ' symbol • NCG and located in a numbered symbol ..... J ..CORESET ___. ,,, ..CCE . C 1 ..CORESET . ..CORESET . _n mod Nsymb , where m = O,1,..,NREG —1,n= 0,1,...,NCCE —1,Nsymb is the number of symbols included in the first set of control features, NREG is the number of REGs included in the numbered CCE n in the first set of control features and N CORNET is the number of CCEs included in the first set of control features.

[00231] Optionally, in one embodiment, the information about the mapping form of the first set of control features indicates that the mapping form of the first set of control features is time-first localized mapping, the REGs in the first set of control features are numbered in a time-first manner, and REGs in a CCE numbered n in the first set of control features are numbered m+nNCCE, where c । ..CCE ,M..CORESET . At CCE < . . γ-,ι-om = 0,1,...,nREG -1, n = 0,1,...,nCCE-1, NREG is the number of REGs included in the CCE numbered n in the first set of control features, and nc°eese is the number of CCEs included in the first set of control features.

[00232] Optionally, in one modality, information about Petition 870250077633, dated 01 / 09 / 2025, p. 173 / 201 72 / 90 mapping form of the first set of control features indicates that the mapping form of the first set of control features is frequency-first localized mapping, the REGs in the first set of control features are numbered in a frequency-first manner and REGs in a numbered CCE n in the first set of control features are numbered m + nNrEG, a^CCE cc ,,-CORESET atCCE where m = 0,1,..., nREG-1, n = 0,1,..., nCCE-1, NREG is the number of REGs included in the numbered CCE n in the first set of control features and NCCCOERESET is the number of CCEs included in the first set of control features.

[00233] Optionally, in one embodiment, the information about the mapping form of the first set of control resources indicates that the mapping form of the first set of control resources is distributed mapping in a time-first manner, the REGs in the first set of control resources are numbered in a time-first manner, and REGs in a numbered CCE in the first set of control resources are numbered ..coresetNreg NCCENreg coreset s symb c ,atCORESET , c 1 aAORESET . , where i = %..,Nsymb- i, n = 0,1,...,Ncce-1, vCCE j = 0,1,...,R-1, NSjmRESET is the number of symbols included in the first Nsymb control feature set, nCORESET is the number of REGs included in the first set of control features, nRCG is the number of REGs included in the numbered CCE n in the first set of control features and nCORESET is the number of CCEs included in the first set of control features.

[00234] Optionally, in one modality, REGs in a CCE Petition 870250077633, dated 01 / 09 / 2025, p. 174 / 201 73 / 90 numbered n in the first set of control resources are numbered . .CORESETNsymb ( n mod k L. .CORESETNCCE . .CORESET N. k symbol Λ..CORESET ^NCCE ..CORESET kNsymb j CORESETNREGNCCEREG or REGs in a CCE numbered n in the first set of control resources are numbered n mod k . .CORESET k NCCE--..CORESETvsymb jn CORESET NCCE--NCORESETkvsymb j CORESET RB CORESETNRBNCCE 7Vreg or a numbered CCE n in the first set of control resources contains numbered REGs n modΛ,,-CORESETλNCCE ,,-CORESET kvsymb j CORESETNRBNCCE7Vreg and located in a numbered symbol n C ,rCORESET kNCCE ..CORESET kNsymb j . _mAtCORESET where n = 0,1,...,Ncce -1, m = 0.1,..., NREG -1, rCORESET NsCyOmRbESET is the number of symbols included in the first set of control features, nCORESET is the number of CCEs included in the first set of control features, NRCORESET is the number of REGs included in the first set of control features, and NREGE is the number of REGs included in the numbered CCE n in the first set of control features.

[00235] Optionally, in one embodiment, the information about the mapping form of the first set of control resources indicates that the mapping form of the first set of control resources is time-frequency interleaved distributed mapping, REGs in the first set of control resources are numbered from Petition 870250077633, dated 01 / 09 / 2025, page 175 / 201 74 / 90 a form by time first and REGs in a numbered CCE n in the first set of control resources are numbered ..CORESET 'symbn, / ... , ..CORESET , . .CORESET + (m+n)modNsymb +m' CORESET N REG NCCEREG or REGs in a CCE numbered n in the first set of control resources are numbered . .CORESET N symbol ( n mod CORESET N CCE „ CORESET yvsymb CORESET NCCE, .CORESET N y symb y CORESET NREG NCCE1* DE,Q , C 1 ..CORESETλc c ..CCE . nrCORESET .· . . . where n = 0,1,...,NCCE-1, m = 0,1,...,NREG -1, Nsymbé is the number of symbols included in the first set of control features, NCCCOERESETé is the number of CCEs included in the first set of control features, Ν™ε?,είé is the number of REGs included in the first set of control features and NCEG is the number of REGs included in the numbered CCE n in the first set of control features.

[00236] Optionally, in one embodiment, the first search space is located in the first set of control resources, the first search space includes M1 physical downlink control channels, PDCCH candidates with an aggregation level L, and a numbered PDCCH candidate m is one of the M(L1) PDCCH candidates with the level P,lde aggregation L.

[00237] The determination unit is further configured to determine, based on information about the mapping shape of the first set of control features, the L CCEs included in the candidate PDCCH numbered m in the first search space.

[00238] Optionally, in one embodiment, information on the mapping form of the first set of control resources. Petition 870250077633, dated 01 / 09 / 2025, page 176 / 201 75 / 90 indicates that the mapping method for the first set of control resources is distributed mapping and

[00239] if L equals 2, the candidate PDCCH numbered m includes two consecutively numbered CCEs; or

[00240] if L is greater than 2, the candidate PDCCH numbered m includes L CCEs and at least two of the L CCEs are numbered non-consecutively.

[00241] In an optional embodiment, the receiving unit 2210 may be a transceiver 2340, the determination unit 2220 may be a processor 2320, and the terminal device may further include an input / output interface 2330 and a memory 2310. Details are shown in Figure 23.

[00242] Figure 23 is a schematic block diagram of a terminal device according to another embodiment of the present application. The terminal device can perform all the methods in the previous embodiments. Therefore, for specific details of the terminal device, refer to the descriptions in the previous embodiments. To avoid repetition, details are not described here again. A terminal device 2300 shown in Figure 23 may include a memory 2310, a processor 2320, an input / output interface 2330, and a transceiver 2340. The memory 2310, the processor 2320, the input / output interface 2330, and the transceiver 2340 are connected using an internal connection path. The memory 2310 is configured to store an instruction.Processor 2320 is configured to execute the instruction stored in memory 2320 to control the input / output interface 2330 to receive input data and information and output data as a result of the operation and to control transceiver 2340 to send a signal.

[00243] Transceiver 2340 is configured to receive configuration information for a first set of control features, in Petition 870250077633, dated 01 / 09 / 2025, page 177 / 201 76 / 90 that the information about the configuration of the first set of control resources includes information about the mapping method of the first set of control resources.

[00244] Processor 2320 is configured to determine, based on information about the mapping shape of the first set of control features that is received by the transceiver, a mapping shape between the control channel element CCE and groups of resource elements REGs in the first set of control features, where a REG in the first set of control features occupies a symbol in the time domain and occupies a block of resources RB in the frequency domain.

[00245] It should be understood that, in this embodiment of the present application, the 2320 processor may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for executing a related program to implement the technical solutions provided in the embodiments of the present application.

[00246] It should also be understood that the 2340 transceiver is also referred to as a communications interface and uses a transceiver device, including, but not limited to, a transceiver, to implement communication between the 2300 terminal device and another device or a communications network.

[00247] The 2310 memory may include read-only memory and random-access memory and provides an instruction and data to the 2320 processor. Part of the 2320 processor may also include non-volatile random-access memory. For example, the 2320 processor may also store information about the device type.

[00248] In an implementation process, the steps of the method Petition 870250077633, dated 01 / 09 / 2025, page 178 / 201 The 77 / 90 steps above can be executed by an integrated logic circuit in a hardware form or by an instruction in a software form in the 2320 processor. The communication methods described with reference to the embodiments of the present application can be executed and completed directly using a hardware processor or can be performed and completed using a combination of hardware and software modules in the processor. The software module can be located in a storage medium known in the art, such as a random access memory, a flash memory, a read-only memory, a read-only programmable memory, an electrically erasable programmable memory, or a register. The storage medium is located in the 2310 memory. The 2320 processor reads the information from the 2310 memory and executes, with its hardware, the steps in the previous method. To avoid repetition, details are not described here again.

[00249] It should be understood that, in the embodiments of the present application, the processor may be a central processing unit (CPU). Alternatively, the processor may be another general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, a separate gate, a transistor logic device, a separate hardware component, or similar. The general-purpose processor may be a microprocessor, or the processor may be any conventional or similar processor.

[00250] Figure 24 is a schematic structural diagram of a network device according to an embodiment of the present application. The network device can perform all methods in the embodiments Petition 870250077633, dated 01 / 09 / 2025, page 179 / 201 78 / 90 above. Therefore, for specific details of the network device, refer to the descriptions in the previous embodiments. To avoid repetition, details are not described here again. The network device 2400 shown in Figure 24 includes a determination unit 2410 and a transmission unit 2420.

[00251] The determination unit is configured to determine a mapping form between a CCE control channel element in a first set of control features and a group of REG feature elements in the first set of control features, where a REG in the first set of control features occupies a symbol in the time domain and occupies a block of RB features in the frequency domain.

[00252] The sending unit is configured to send configuration information for the first set of control resources, where the configuration information for the first set of control resources includes information about the mapping method for the first set of control resources, and the mapping method for the first set of control resources indicates the mapping method between the CCE and the REGs in the first set of control resources.

[00253] Optionally, in one embodiment, the information about the mapping form of the first set of control features indicates that the mapping form of the first set of control features is localized mapping, each CCE in the first set of control features includes a plurality of consecutive REGs in the frequency domain, and the plurality of REGs included in each CCE is localized in the same symbol.

[00254] Optionally, in one embodiment, the REGs in a CCE numbered n in the first set of control resources are Petition 870250077633, dated 01 / 09 / 2025, pages 180 / 201 79 / 90 numbered m · N+ n mod N+ n λ / CORESET 'symbrCCE λ / CORESET _ , REG ^Nsymb Or REGs in a CCE numbered n in the first set of control features are numbered m + (n mod N^) · N + n TTCORESEt ' symb • NCCG or a CCE numbered n in the first set of control resources contains REGs numbered m + n λ / CORESET ' symbol • NREG and located in a numbered symbol ..... J λ / CORESET ___.n1..CCE . ..coreset . coreset. _nmodNsymb , where m =0,1,..„NREG -1,n=0,1,..„NCCE-1, Nsymb is the number of symbols included in the first set of control features, NREE is the number of REGs included in the numbered CCE n in the first set of control features and CORESET is the number of CCEs included in the first set of control features.

[00255] Optionally, in one embodiment, the information about the mapping form of the first set of control features indicates that the mapping form of the first set of control features is time-first localized mapping, the REGs in the first set of control features are numbered in a time-first-frequency-second manner, and REGs in a numbered CCE n in the first set of control features are numbered m+nNCEE ___. ci λ / CCE . ci ..CORESET . λ / CCE . __.__i . I—» , where m = 0,1,..., nREG -1, n = 0,1,..., nCCE-1, NREG is the number of REGs included in the numbered CCE n in the first set of control features, and nCORESET is the number of CCEs included in the first set of control features.

[00256] Optionally, in one embodiment, the information about the mapping form of the first set of control resources indicates that the mapping form of the first set of control resources is frequency-localized mapping. Petition 870250077633, dated 01 / 09 / 2025, pages 181 / 201 80 / 90 first, the REGs in the first set of control resources are numbered in a way by frequency first-time second and REGs in a CCE numbered n in the first set of control resources are numbered m + nNR'G, where m = 0,1,...,NREG -1, n = 0,1,...,ncceE^ — 1, NREG is the number of REGs included in the CCE numbered n in the first set of control resources and ncceE is the number of CCEs included in the first set of control resources.

[00257] Optionally, in one embodiment, the information about the mapping form of the first set of control resources indicates that the mapping form of the first set of control resources is distributed mapping in a time-first manner, the REGs in the first set of control resources are numbered in a time-first-frequency-second manner, and REGs in a numbered CCE n in the first set of control resources are numbered CORESETNREGNREG' where , c 1 mCORESET ,1=0, 1,..., Nsymb- 1, ..CORESET ^Nsymb _n, ..CORESET1,n= 0,1,...,Ncce1, J =0,1, .CCE -Neg--1. NCORESETé a ..CORESET1, symbNsymb is the number of symbols included in the first set of control features, NRCEOGRESE is the number of REGs included in the first set of control features, NRCG is the number of REGs included in the numbered CCE n in the first set of control features, and RR'sI1 is the number of CCEs included in the first set of control features.

[00258] Optionally, in one embodiment, REGs in a numbered CCE n in the first set of control resources are Petition 870250077633, dated 01 / 09 / 2025, pages 182 / 201 81 / 90 numbered -y-CORESETvsymb ( n mod VΛ. .CORESET N CCE . .CORESET VN symbol n CORESETNCCE . .CORESET VN symbol j CORESET N REGNCCEREG or REGs in a CCE numbered n in the first set of control resources are numbered n mod VNcoreset7 NCCE ..CORESET N symbol j ( n CORESET 7 NCCE---NCORESET V symbol j CORESET N,.,,. + m CORESET N RB____ NCCE 1VREG or a CCE numbered n in the first set of control resources contains REGs numbered n mod C CORESETNCCE ..CORESET VN symbol CORESET N RBNCCEJVREG and located in a numbered symbol n ^ ,,CORESET 7 N CCE CORESET VN symb j ___.Λ1..CORESET where n = 0,1,..., ncce -1, m = 0,1,..., NReCgE-1, NsCyOmRbESET is the number of symbols included in the first set of control features, NCCCOERESET is the number of CCEs included in the first set of control features, NC°RESET is the number of REGs included in the first set of control features and NRCEG is the number of REGs included in the numbered CCE n in the first set of control features.

[00259] Optionally, in one embodiment, the information about the mapping form of the first set of control resources indicates that the mapping form of the first set of control resources is time-frequency interleaved distributed mapping, REGs in the first set of control resources are numbered in a time-first manner, and REGs in a CCE numbered n in Petition 870250077633, dated 01 / 09 / 2025, pages 183 / 201 82 / 90 first set of control features are numbered C CORESET 'symb n ,rCORESET 'symb + (m + n )mod N™T+ m · CORESETNREGNCCEREG or REGs in a CCE numbered n in the first set of control resources are numbered . .CORESETNsymb ( n mod (..CORESETNCCE ..CORESET ^Nsymb n ( . .CORESETΛ NCCE ..CORESET Ϋvsymb y mod NsC™ + m · CORESETNREG NCCE1v where n = 0,1,...,nE' -1, m = 0,1,...,nRCG -1, N"T is the number of vvlj sl\l Λ I s syuiu I symbols included in the first set of control features, NCCCOERESET is the number of CCEs included in the first set of control features, N\'χχν' is the number of REGs included in the first set of control features and NREE is the number of REGs included in the CCE numbered n in the first set of control features.

[00260] Optionally, in one embodiment, the first search space is located in the first set of control features, the first search space includes candidate MPDCCHs with an aggregation level L, a candidate PDCCH numbered m is one of the Ml candidate PDCCHs with the aggregation level L, and the mapping shape information of the first set of control features indicates L CCEs included in the candidate PDCCH numbered m in the first search space.

[00261] Optionally, in one embodiment, the information about the mapping form of the first set of control resources indicates that the mapping form of the first set of control resources is distributed mapping and Petition 870250077633, dated 01 / 09 / 2025, p. 184 / 201 83 / 90 if L equals 2, the PDCCH candidate numbered m includes two consecutively numbered CCEs; or if L is greater than 2, the PDCCH candidate numbered m includes L CCEs and at least two of the L CCEs are numbered non-consecutively.

[00262] In an optional embodiment, the determination unit 2410 may be a processor 2520, the transmission unit 2420 may be a transceiver 2540, and the network device may further include an input / output interface 2530 and a memory 2510. Details are shown in Figure 25.

[00263] Figure 25 is a schematic block diagram of a network device according to another embodiment of the present application. A network device 2500 shown in Figure 25 may include a memory 2510, a processor 2520, an input / output interface 2530, and a transceiver 2540. The memory 2510, the processor 2520, the input / output interface 2530, and the transceiver 2540 are connected using an internal connection path. The memory 2510 is configured to store an instruction. The processor 2520 is configured to execute the instruction stored in the memory 2520, to control the input / output interface 2530 to receive input data and information, and to control the transceiver 2540 to send a signal.

[00264] The 2520 processor is configured to determine a mapping method between a CCE control channel element, in a first set of control resources, and groups of REG resource elements in the first set of control resources, where a REG in the first set of control resources occupies a symbol in the time domain and occupies a block of RB resources in the frequency domain. Petition 870250077633, dated 01 / 09 / 2025, pages 185 / 201 84 / 90

[00265] The 2540 transceiver is configured to determine a mapping method between a CCE control channel element, in a first set of control resources, and groups of REG resource elements in the first set of control resources, where a REG in the first set of control resources occupies a symbol in the time domain and occupies a block of RB resources in the frequency domain.

[00266] It should be understood that, in this embodiment of the present application, the 2520 processor may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for executing a related program to implement the technical solutions provided in the embodiments of the present application.

[00267] It should also be understood that the 2540 transceiver is also referred to as a communications interface and uses a transceiver device, including, but not limited to, a transceiver, to implement communication between the 2500 network device and another device or a communications network.

[00268] The 2510 memory may include read-only memory and random-access memory and provides an instruction and data to the 2520 processor. Part of the 2520 processor may also include non-volatile random-access memory. For example, the 2520 processor may also store information about the device type.

[00269] In an implementation process, the steps of the above method can be executed by an integrated logic circuit in a hardware form or by an instruction in a software form in the 2520 processor. The communication methods described with reference to the embodiments of the present application can be executed and Petition 870250077633, dated 01 / 09 / 2025, pages 186 / 201 85 / 90 steps can be completed directly using a hardware processor or can be performed and completed using a combination of hardware and software modules in the processor. The software module can be located in a storage medium known in the art, such as random access memory, flash memory, read-only memory, read-only programmable memory, electrically erasable programmable memory, or a register. The storage medium is located in memory 2510. The 2520 processor reads information from memory 2510 and executes, with its hardware, the steps in the previous method. To avoid repetition, details are not described here again.

[00270] It should be understood that, in the embodiments of the present application, the processor may be a central processing unit (CPU). Alternatively, the processor may be another general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, a separate gate, a transistor logic device, a separate hardware component, or similar. The general-purpose processor may be a microprocessor, or the processor may be any conventional or similar processor.

[00271] It may also be understood that the memory in the embodiments of the present application may be volatile memory or non-volatile memory or may include both volatile and non-volatile memory. Non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable read-only memory (EPROM), or a memory of Petition 870250077633, dated 01 / 09 / 2025, pages 187 / 201 86 / 90 read-only electrically erasable programmable memory (electrically EPROM, EEPROM) or flash memory. Volatile memory can be random access memory (RAM) used as an external cache. By way of example, but not as a limiting description, many forms of random access memory (RAM) can be used, for example, static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchlink dynamic random access memory (SLDRAM), and direct Rambus dynamic random access memory (DR RAM).

[00272] All or some of the foregoing embodiments may be implemented using software, hardware, firmware, or any combination thereof. When software is used to implement the embodiments, the foregoing embodiments may be implemented wholly or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the procedure or functions according to the embodiments of this application are wholly or partially generated. The computer may be a general-purpose computer, a dedicated computer, a computer network, or other programmable device. The computer instructions may be stored on a computer-readable storage medium or may be transmitted from a medium Petition 870250077633, dated 01 / 09 / 2025, pages 188 / 201 87 / 90 from computer-readable storage to another computer-readable storage medium. For example, computer instructions can be transmitted from one site, computer, server, or data center to another site, computer, server, or data center in a wired manner (e.g., infrared, radio, and microwave or similar). The computer-readable storage medium can be any usable medium accessible by a computer or a data storage device, such as a server or data center, that integrates one or more usable media. The usable medium can be a magnetic medium (e.g., a floppy disk, a hard disk, or magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium. The semiconductor medium can be a solid-state drive.

[00273] The term and / or, in this descriptive report, describes only an association relationship to describe associated objects and represents which three relationships can exist. For example, A and / or B can represent the following three cases: only A exists, A and B exist, and only B exists. Furthermore, the character / in this descriptive report generally indicates an OR relationship between the associated objects.

[00274] It should be understood that the sequence numbers of previous processes do not signify execution sequences in various modalities of the present application. The execution sequences of the processes should be determined according to the functions and internal logic of the processes and should not be interpreted as any limitation on the implementation processes of the modalities of the present application.

[00275] Those skilled in the art will be aware that, in combination with the examples described in the embodiments described in this descriptive report, the units and steps of the algorithm may Petition 870250077633, dated 01 / 09 / 2025, pages 189 / 201 88 / 90 can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are performed by hardware or software depends on specific applications and design constraints of the technical solutions. Those skilled in the art may use different methods to implement the described functions for each particular application; however, it should not be considered that the implementation goes beyond the scope of the present application.

[00276] It may be clearly understood by those skilled in the art that, for the sake of convenient and brief description, for a detailed working process of the preceding system, apparatus and unit, reference may be made to a corresponding process in the embodiments of the preceding method and details are not described here again.

[00277] In the various embodiments provided in this application, it should be understood that the system, apparatus, and method described may be implemented in other ways. For example, the described apparatus embodiment is merely an example. For example, the division of units is merely a logical function division and may be another division in the actual implementation. For example, a plurality of units or components may be combined or integrated into another system, or some features may be ignored or not implemented. Furthermore, the mutual couplings, direct couplings, or communication connections shown or discussed may be implemented using some interfaces. Indirect couplings or communication connections between the apparatuses or units may be implemented in electronic, mechanical, or other forms.

[00278] The units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, they may be located in a position Petition 870250077633, dated 01 / 09 / 2025, pages 190 / 201 89 / 90 or they can be distributed across a plurality of network units. Some or all of the units can be selected according to the actual requirements to achieve the objectives of the modal solutions.

[00279] Furthermore, the functional units in the embodiments of this application may be integrated into a processing unit, or each of the units may exist in a physical form individually, or two or more units may be integrated into a unit.

[00280] When functions are implemented in the form of a functional software unit and sold or used as a standalone product, the functions may be stored on a computer-readable storage medium. Based on this understanding, the technical solutions of the present application, essentially or the part that contributes to the state of the art, or some of the technical solutions, may be implemented in the form of a software product. The software product is stored on a storage medium and includes various instructions to instruct a computer device (which may be a personal computer, a server, a network device, or similar) to perform all or some of the steps of the methods described in the embodiments of the present application.Previous storage media included: any medium that could store program code, such as a USB flash drive, a removable hard disk, read-only memory (ROM), random access memory (RAM), a magnetic disk, or an optical disk.

[00281] The foregoing descriptions are only specific implementations of the present application, but are not intended to limit the scope of protection of the present application. Any variation or substitution readily identifiable by those skilled in the art within the technical scope described in the present application shall be within the scope. Petition 870250077633, dated 01 / 09 / 2025, pages 191 / 201 90 / 90 protection of the present application. Therefore, the scope of protection of the present application must be subject to the scope of protection of the embodiments.< / cc>

Claims

1. A communication method, implemented by a terminal device or a chip in a terminal device, characterized in that it comprises: receiving (610) configuration information from a first set of control resources, wherein the configuration information from the first set of control resources comprises mapping form information from the first set of control resources; and determining (620), based on the mapping form information from the first set of control resources, a mapping form between a control channel element (CCE) in the first set of control resources and resource element groups (REGs) in the first set of control resources, wherein a REG in the first set of control resources occupies a symbol in the time domain and occupies a resource block (RB) in the frequency domain;where the mapping shape information of the first set of control features indicates that the mapping shape of the first set of control features is interleaved mapping, REGs in a numbered REG bundle j in the first set of control features are numbered . -AT-REG-bundle . „ , A7-CORESET , Al IA rCORESET / Λ rREG-bundle I m + JNREG , where J = °'1'-' NREG-bundle - 1 or J = °Λ · · ·' LNREG / NREG _| , r . ArREG-bundle . m = °'1'...'N reg -1 ArCORESET _ atCORESET / ΛT-REG - bundle N REG-bundle = N REG / N REG where atCORESET N REG-bundle represents the number of REG clusters included in the ctCOBESET first set of control features, NREG represents the number of REGs included in the first set of control features, REG-bundle REG represents the number of REGs included in a cluster of REGs;and Petition 870250077633, dated 01 / 09 / 2025, p. 193 / 201 2 / 5 where the grouping of REGs included in a numbered CCE n in the first set of control features is numbered .Z . . z-zs . .. . . . r = m VCCE. .. -1 f(x,n,c) , where fθ indicates an interleaver, ''' REG-bundle , n =01 CCORESET-1 . . . _ _ _ MCORESET ' '' CCE , c is equal to 2, 3, or 6, CCCE represents the number of CCEs included in the first set of control features, c CCE vREG-bundle represents the number of REG clusters included in wCORESET a CCE in the first set of control features and CCCE and N CCE REG-bundle are positive integers.; 2. Method, according to claim 1, characterized in that the value of c is received via signaling.

3. Method according to claim 1, characterized in that REGs in the first set of control features are numbered in a time-first manner.

4. A method according to any one of claims 1 to 3, characterized in that a first search space is located in the first set of control resources, the first M(L) search space includes p'k candidate physical downlink control channels (PDCCHs) with an aggregation level L, a candidate PDCCH M(L) numbered mpdcch is one of the p'k candidate PDCCHs, where p represents the first set of control resources, ek represents transmission duration, and L is a positive integer, wherein the method further comprises: determining, based on the mapping shape information of the first set of control resources, L CCEs in the candidate PDCCH numbered mpdcch in the first search space.

5. Method, according to claim 4, characterized in that: L equals 2, the candidate PDCCH numbered mpdcch includes two consecutively numbered CCEs; or L is greater than 2, the candidate PDCCH numbered mpdcch includes L CCEs, and at least two CCEs in the L CCEs are numbered non-consecutively.

6. A communication method, implemented by a network device or a chip in a network device, characterized in that it comprises: determining (630) a mapping form between a control channel element (CCE) in a first set of control resources and groups of resource elements (REGs) in the first set of control resources, wherein a REG in the first set of control resources occupies a time-domain symbol and occupies a frequency-domain resource block (RB); and sending (610) configuration information of the first set of control resources, wherein the configuration information of the first set of control resources comprises mapping form information of the first set of control resources, and wherein the mapping form information of the first set of control resources indicates the mapping form between the CCE and the REGs in the first set of control resources;wherein the mapping shape information of the first set of control features indicates that the mapping shape of the first set of control features is interleaved mapping, REGs in a numbered REG cluster j in the first set of control features are numbered । ,-ArREG-bundle . M . m + JN reg , where J = 0,1 atCORESET N REG-bundle i 7 — 01 I vCORESET / ά tREG-bundle I 1 or J = U'1'''LNReg / Nreg _| r , ..REG-bundle , m = 0,1,..„ N reg -1v coreset _ .. CORESET / ..REG - bundle and N REG-bundle = N REG / N REG where ..coreset NREG-bundle represents the number of REG clusters included in the first set of control features, vREG represents the number of REGs included in the first set of control features, TirREG-bundle N REG represents the number of REGs included in a REG cluster;and wherein the grouping of REGs included in a numbered CCE n in the first set of control features is numbered zz . . z-zs . .. . . . y = M À / CCE .. f(χ,n,c) , where fθ indicates an interleaver, REG-bundle n =01 NCORESET-1 . . . _ _ _ VCORESET, CCE , c is equal to 2, 3, or 6, NCCE represents the number of CCEs included in the first set of control features, N CCE REG-bundle represents the number of groupings of REGs included in a CCE in the first set of control features and NCCE and N CCE VREG-bundle are positive integers.; 7. Method according to claim 6, characterized in that the value of c is sent via signaling.

8. Method according to claim 6, characterized in that REGs in the first set of control features are numbered in a time-first manner.

9. A method according to any one of claims 6 to 8, characterized in that a first search space is located in the first set of control features, the first M(L) search space includes p>k candidate physical downlink control channels (PDCCHs) with an aggregation level L, a candidate M(L) PDCCH numbered mpdcch is one of the pk candidate PDCCHs with aggregation level L, and the mapping shape information of the first set of control features indicates L CCEs in a candidate PDCCH numbered mpdcch in the first search space, and L is a positive integer. Petition 870250077633, dated 01 / 09 / 2025, p. 196 / 201 5 / 5 10. Method according to claim 9, characterized in that: L equals 2, the candidate PDCCH numbered mpdcch includes two consecutively numbered CCEs; or L is greater than 2, the candidate PDCCH numbered mpdcch includes L CCEs, and at least two CCEs in the L CCEs are numbered non-consecutively.

11. Apparatus, characterized in that it is configured to perform the method as defined in any one of claims 1 to 5.

12. Apparatus, characterized in that it is configured to perform the method as defined in any one of claims 6 to 10.

13. Computer-readable storage medium, characterized in that it comprises a computer program which, when executed by a computer, causes the computer to execute the method as defined in any one of claims 1 to 5 or any one of claims 6 to 10.

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