CN116781219A

CN116781219A - Method and device for indicating control channel resources of delay-Doppler domain DD domain

Info

Publication number: CN116781219A
Application number: CN202210239537.8A
Authority: CN
Inventors: 袁璞; 纪子超; 刘昊; 姜大洁; 秦飞
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-03-11
Filing date: 2022-03-11
Publication date: 2023-09-19
Also published as: WO2023169563A1

Abstract

The application discloses a method and a device for indicating control channel resources of a delay Doppler domain DD domain, which belong to the technical field of communication, and the method for indicating the control channel resources of the DD domain in the embodiment of the application comprises the following steps: the method comprises the steps that first communication equipment obtains control resource set CORESET configuration information of a DD domain; the first communication device detects a control channel of the DD domain based on the CORESET configuration information of the DD domain.

Description

Method and device for indicating control channel resources of delay-Doppler domain DD domain

Technical Field

The application belongs to the technical field of communication, and particularly relates to a method and a device for indicating control channel resources of a delay Doppler domain DD domain.

Background

The orthogonal time frequency space (Orthogonal Time Frequency Space, OTFS) modulation technique is to logically map information in a data packet of size mxn, such as quadrature amplitude modulation (Quadrature Amplitude Modulation, QAM) symbols, into one mxn lattice point on a two-dimensional delay-Doppler plane, i.e., the pulse within each lattice point modulates one QAM symbol in the data packet, and map all QAM symbols onto delay-Doppler (DD) domain resources.

In the prior art, when the OTFS system works alone, it is impossible to use the control channel resource mapping design of the Time-Frequency (TF) domain based on the orthogonal Frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) in the existing New Radio (NR) technology. In a separate OTFS system, the data channel and the control channel use the same modulation waveform, and the OTFS is unified, so QAM symbols must be mapped in the DD domain. Therefore, there is a need to design a DD domain control channel resource indication scheme that uses DD domain resources to carry OTFS system control information.

Disclosure of Invention

The embodiment of the application provides a method and a device for indicating control channel resources of a delay-Doppler domain DD domain, which can realize the indication of the control channel resources of the DD domain.

In a first aspect, a method for indicating control channel resources of a delay-doppler domain DD domain is provided, where the method includes:

the method comprises the steps that first communication equipment obtains control resource set CORESET configuration information of a DD domain;

the first communication device detects a control channel of the DD domain based on the CORESET configuration information of the DD domain.

In a second aspect, there is provided a method for indicating control channel resources of a delay-doppler domain DD domain, the method comprising:

The second communication device sends control resource set CORESET configuration information of the DD domain to the first communication device; the CORESET configuration information of the DD domain is used to instruct the first communication device to detect a control channel of the DD domain.

In a third aspect, an indication apparatus for a control channel resource of a delay-doppler domain DD domain is provided, the apparatus comprising:

the acquisition module is used for acquiring control resource set CORESET configuration information of the DD domain;

and the detection module is used for detecting a control channel of the DD domain based on the CORESET configuration information of the DD domain.

In a fourth aspect, an indication apparatus for a control channel resource of a delay-doppler domain DD domain is provided, the apparatus comprising:

the first sending module is used for sending control resource set CORESET configuration information of the DD domain to the first communication equipment; the CORESET configuration information of the DD domain is used to instruct the first communication device to detect a control channel of the DD domain.

In a fifth aspect, there is provided a first communications device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method as described in the first aspect.

In a sixth aspect, a first communication device is provided, comprising a processor and a communication interface; the communication interface is used for acquiring control resource set CORESET configuration information of the DD domain;

the processor is configured to detect a control channel of the DD domain based on the CORESET configuration information of the DD domain.

In a seventh aspect, there is provided a second communication device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method as described in the second aspect.

An eighth aspect provides a second communication device, comprising a processor and a communication interface; the communication interface is used for sending control resource set CORESET configuration information of the DD domain to the first communication device; the CORESET configuration information of the DD domain is used to instruct the first communication device to detect a control channel of the DD domain.

A ninth aspect provides an indication system of control channel resources of a delay-doppler domain DD domain, comprising: a first communication device operable to perform the steps of the method as described in the first aspect, and a second communication device operable to perform the steps of the method as described in the second aspect.

In a tenth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor, performs the steps of the method according to the first aspect or performs the steps of the method according to the second aspect.

In an eleventh aspect, there is provided a chip comprising a processor and a communication interface coupled to the processor, the processor being for running a program or instructions to implement the method according to the first aspect or to implement the method according to the second aspect.

In a twelfth aspect, there is provided a computer program/program product stored in a storage medium, the computer program/program product being executed by at least one processor to implement the steps of the method as described in the first aspect or to implement the steps of the method as described in the second aspect.

In the embodiment of the application, the first communication equipment acquires the CORESET configuration information of the DD domain, and then the first communication equipment detects the control channel of the DD domain based on the CORESET configuration information of the DD domain, so as to realize the control channel resource indication of the DD domain which utilizes the DD domain resource to bear the OTFS system control information; the QAM signal is not required to be mapped in the TF domain and then is converted from the TF domain to the DD domain, so that the problem of inter-carrier interference (Inter Carrier Interference, ICI) caused by the mapping of the QAM signal in the TF domain is avoided.

Drawings

Fig. 1 is a schematic diagram of a wireless communication system to which embodiments of the present application are applicable;

fig. 2 is one of flow diagrams of a method for indicating a control channel resource of a DD domain according to an embodiment of the present application;

fig. 3 is a second flowchart of a method for indicating a control channel resource of a DD domain according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of an indication device of a control channel resource of a DD domain according to an embodiment of the present application;

fig. 5 is a second schematic structural diagram of an indication device for a control channel resource of a DD domain according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a terminal according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a network side device according to an embodiment of the present application.

Detailed Description

The technical solutions of the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the application, fall within the scope of protection of the application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the "first" and "second" distinguishing between objects generally are not limited in number to the extent that the first object may, for example, be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.

It should be noted that the techniques described in the embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single carrier frequency division multiple access (Single-carrier Frequency Division Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" in embodiments of the application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as for them Other systems and radio technologies. The following description describes a New air interface (NR) system for purposes of example and uses NR terminology in much of the following description, but the techniques are also applicable to communication systems other than NR system applications, such as generation 6 (6) ^th Generation, 6G) communication system.

Fig. 1 is a schematic diagram of a wireless communication system to which an embodiment of the present application is applicable, and the wireless communication system shown in fig. 1 includes a terminal 11 and a network-side device 12. The terminal 11 may be a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer) or a terminal-side Device called a notebook, a personal digital assistant (Personal Digital Assistant, PDA), a palm top, a netbook, an ultra-mobile personal Computer (ultra-mobile personal Computer, UMPC), a mobile internet appliance (Mobile Internet Device, MID), an augmented reality (augmented reality, AR)/Virtual Reality (VR) Device, a robot, a Wearable Device (weather Device), a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), a smart home (home Device with a wireless communication function, such as a refrigerator, a television, a washing machine, or a furniture), a game machine, a personal Computer (personal Computer, PC), a teller machine, or a self-service machine, and the Wearable Device includes: intelligent wrist-watch, intelligent bracelet, intelligent earphone, intelligent glasses, intelligent ornament (intelligent bracelet, intelligent ring, intelligent necklace, intelligent anklet, intelligent foot chain etc.), intelligent wrist strap, intelligent clothing etc.. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application.

The network-side device 12 may comprise an access network device or core network device, wherein the access network device may also be referred to as a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a radio access network element. The access network device may include a base station, a WLAN access point, a WiFi node, or the like, where the base station may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a home node B, a home evolved node B, a transmission receiving point (Transmitting Receiving Point, TRP), or some other suitable terminology in the field, and the base station is not limited to a specific technical vocabulary so long as the same technical effect is achieved, and it should be noted that in the embodiment of the present application, only the base station in the NR system is described by way of example, and the specific type of the base station is not limited. The core network device may include, but is not limited to, at least one of: core network nodes, core network functions, mobility management entities (Mobility Management Entity, MME), access mobility management functions (Access and Mobility Management Function, AMF), session management functions (Session Management Function, SMF), user plane functions (User Plane Function, UPF), policy control functions (Policy Control Function, PCF), policy and charging rules function units (Policy and Charging Rules Function, PCRF), edge application service discovery functions (Edge Application Server Discovery Function, EASDF), unified data management (Unified Data Management, UDM), unified data repository (Unified Data Repository, UDR), home subscriber server (Home Subscriber Server, HSS), centralized network configuration (Centralized network configuration, CNC), network storage functions (Network Repository Function, NRF), network opening functions (Network Exposure Function, NEF), local NEF (or L-NEF), binding support functions (Binding Support Function, BSF), application functions (Application Function, AF), location management functions (location manage function, LMF), enhanced services mobile location center (Enhanced Serving Mobile Location Centre, E-SMLC), network data analysis functions (network data analytics function, NWDAF), and the like. It should be noted that, in the embodiment of the present application, only the core network device in the NR system is described as an example, and the specific type of the core network device is not limited.

The method for indicating the control channel resources of the DD domain provided by the embodiment of the application is described in detail by some embodiments and application scenes thereof with reference to the attached drawings.

Fig. 2 is one of the flow diagrams of a method for indicating a control channel resource of a DD domain according to an embodiment of the present application, as shown in fig. 2, the method may include steps 201 to 202; wherein:

step 201, the first communication device obtains control resource set (Control resource set, CORESET) configuration information of the DD domain.

Step 202, the first communication device detects a control channel of the DD domain based on the CORESET configuration information of the DD domain.

It should be noted that, the embodiment of the present application may be applied to an OTFS system, in which, the signal processing flow of the transmitting side is firstly transformed from the DD domain to the TF domain, then transformed from the TF domain to the time domain (T domain), and finally the T domain passes through the channel to the receiving side; the signal processing flow of the receiving side is firstly transformed from the T domain to the TF domain, then transformed from the TF domain to the DD domain, and the judgment of the modulation symbol is in the DD domain. The application can detect the control channel in the DD domain based on the CORESET configuration information of the DD domain, thus avoiding the inter-carrier interference (Inter Carrier Interference, ICI) caused by the fact that the decision of the modulation symbols is required to depend on the TF domain. The first communication device may be a receiving device and the second communication device may be a transmitting device, e.g. the first communication device and the second communication device may be devices communicating based on a side link. Alternatively, the first communication device may include the above-listed terminal 11, and the second communication device may include the above-listed network-side device 12.

Optionally, the CORESET configuration information of the DD domain is used to indicate a resource mapping rule of a control channel of the DD domain, that is, a definition of the CORESET of the DD domain, or indicate a resource range where the control information of the DD domain is located. The smallest resource unit of the control channel of the DD domain is the DD domain resource element (Delay-Doppler RE, DRE). Specifically, the CORESET configuration information of the DD domain includes at least one of the following:

1) A mapping mode for indicating a control channel element (delay-Doppler control channel element, DCCE) of the DD domain to be mapped on the DD domain resource grid according to a delay dimension and/or a doppler dimension, and a size of the mapped resource block. The DCCE may be a minimum demodulation unit of a control channel of the DD domain; at least one control information modulated based on the highest modulation and coding strategy (Modulation and Coding Scheme, MCS), e.g., uplink channel status (channel information, CI) or downlink CI, may be accommodated in one DCCE.

In practice, the DCCE may include m×n DREs; the m is the DRE number of the delay dimension; and n is the DRE number of the Doppler dimension. I.e. the dimension of the resource block size of the DCCE, may be expressed in mxn. DCCEs may be numbered according to the relative location of the DCCE's resources within the CR. Specifically, the mapping mode may include at least one of:

(a) A first mode for indicating that m >1 and n=1 in case DCCE is mapped only in terms of delay dimension;

(b) A second mode for indicating that m=1 and n >1 in case DCCE is mapped only in terms of doppler dimension;

(c) A third mode for indicating that m >1 and n >1 in case DCCE is mapped according to delay dimension and doppler dimension.

2) Aggregation level (Aggregation level, AL) for indicating an aggregation level of DCCE in a delay dimension and/or a doppler dimension.

In practice, a set of CCEs combined according to a certain AL constitutes one physical downlink control channel (Physical Downlink Control Channel, PDCCH) candidate (candidate). The resource region composed of a plurality of PDCCH candidates forms a CORESET. Specifically, the AL may include at least one of:

(1) The first aggregation mode is used for indicating DCCEs to aggregate only according to a delay dimension and configured as k _τ ；

(2) The second aggregation pattern is used for indicating that DCCEs are aggregated only according to Doppler dimension and configured as k _ν ；

(3) The third polymerization mode is used for indicating the DCCE to aggregate according to the delay dimension and the Doppler dimension and is configured as follows

(k _τ ，k _ν )。

3) The CORESET Region (CR) includes a set of DREs that are contiguous on the DD domain resource.

Specifically, the CR may have a size of M 'x N'. Wherein M 'is less than or equal to M, N' is less than or equal to N, M is used for indicating the number of resource cells of the DD domain delay dimension, and N is used for indicating the number of resource cells of the DD domain Doppler dimension. Each CR includes a plurality of PDCCH candidates and guard intervals between the plurality of PDCCH candidates.

4) A Repetition Level (RL) for indicating the number of replications of DCCE in doppler dimension. RL may be a set of integers, such as [1,2,4,8].

It is understood that replication mapping refers to: for mapping of modulation symbol vectors from N to lN (l is an integer greater than 1), a transformed symbol vector X with sparse characteristics can be constructed after transformation by replicating (l-1) modulation symbols _2N I.e. X _2N Between every two non-zero elements there are l-1 zero points; for example, X _2N ＝[X ₁ ,0,..,0,X ₂ ,0,..,0,…,X _N ,0,..,0]。

5) A Single Flag (SF) for indicating whether a control channel of the DD domain and a data channel of the DD domain are multiplexed for transmission; in practice, the SF may occupy 1 bit (bit).

6) The position of the pilot in the DD domain resource grid.

7) The control channel of the DD domain is at the location of the DD domain resource grid.

8) The CORESET burst (burst) of the DD domain includes the CORESET number. Specifically, a set of CORESETs in accordance with a certain RL combination forms a CORESET burst.

In the embodiment of the application, parameters such as mapping mode, aggregation level, CR, repetition level, independent identification, position of pilot frequency in DD domain resource grid, position of control channel in DD domain resource grid, or CORESET number included in CORESET burst of DD domain are included in the CORESET configuration information of DD domain, so that the terminal can conveniently detect the control channel of DD domain based on the indication of the parameters.

The DCCE defined in the embodiment of the present application, as the minimum demodulation unit of the control channel in the DD domain, can accommodate a complete DCI corresponding to the concept of the control channel unit (control channel element, CCE) in NR. Because the demodulation mode of the OTFS takes time slots as a unit and OFDM takes symbols as a unit, the DCCE has a larger degree of freedom on a resource mapping mode (pattern) and is not required to be limited to one OFDM symbol for one-dimensional mapping; second, AL may also be performed in two dimensions to support rate matching (rate matching) of downlink control information (Downlink Control Information, DCI).

In the method for indicating the control channel resources of the DD domain provided by the embodiment of the application, the first communication equipment acquires the CORESET configuration information of the DD domain, and then the first communication equipment detects the control channel of the DD domain based on the CORESET configuration information of the DD domain, so as to realize the indication of the control channel resources of the DD domain which utilizes the DD domain resources to bear the OTFS system control information; the QAM is not required to be mapped on the TF domain firstly and then is transformed from the TF domain to the DD domain, because in an OTFS system, the signal processing flow of a transmitting side is firstly transformed from the DD domain to the TF domain, then is transformed from the TF domain to the time domain (T domain), and finally the T domain is transmitted to a receiving side through a channel; the signal processing flow of the receiving side is firstly transformed from the T domain to the TF domain, then transformed from the TF domain to the DD domain, and the judgment of the modulation symbol is in the DD domain; if QAM is mapped in TF domain, then from TF domain to DD domain, then the signal processing flow of transmitting side is firstly from TF domain to DD domain, then from DD domain to TF domain, then from TF domain to T domain, and T domain is passed through channel to receiving side; the signal processing flow of the receiving side is firstly transformed from the T domain to the TF domain, then transformed from the TF domain to the DD domain, finally transformed from the DD domain to the TF domain, and the judgment of the modulation symbol is still in the TF domain. It can be known that in the method for indicating the control channel resource of the DD domain provided by the application, the decision of the modulation symbol is in the DD domain.

Optionally, an implementation manner of the first communication device to determine CORESET configuration information of the DD domain may include: the first communication device determines CORESET configuration information for the DD domain based on a protocol predefined or higher layer configuration.

In practice, the CORESET configuration information of the DD domain may be sent by the second communication device to the first communication device. In particular, an implementation manner of the first communication device receiving CORESET configuration information of the DD domain sent by the second communication device may include at least one of the following:

1) The first communication equipment receives a broadcast message sent by the second communication equipment; the broadcast message comprises CORESET configuration information of the DD domain;

2) The first communication device receives CORESET configuration information of the DD domain sent by the second communication device on a DD domain target channel.

Specifically, the DD domain target channel is a dedicated channel for carrying CORESET configuration information of the DD domain, such as a physical control format indicator channel (Physical control format indicator channel, PCFICH). CORESET configuration information for the DD domain is indicated by configuring a dedicated channel.

The resource location of the DD domain target channel may be predefined by a protocol. The resource location of the DD domain target channel may be reserved on resources of the DD domain, the resource location of the DD domain target channel being located outside and orthogonal to the CR. Optionally, the resource location of the DD domain target channel may be determined by at least one of the following parameters: CR location, system frame number, time domain location (e.g., subframe, slot, etc.), time domain period, system bandwidth, transport format (e.g., OTFS or OFDM), coding, location of DRE of DD domain (e.g., value of M, value of N), frequency domain location of time-frequency (TF) domain (e.g., subcarrier/resource unit RE), and cell Identification (ID). Wherein the encoding may be quadrature phase shift keying (Quadrature Phase Shift Keying, QPSK).

3) The first communication device receives CORESET configuration information of the DD domain sent by the second communication device on the DD domain target resource.

Specifically, the DD domain target resource is a resource for transmitting CORESET configuration information of the DD domain, and the location of the DD domain target resource may be located in the CR. In practice, some DCCE resources may be reserved within the CR, where the reserved DCCE resources are used to place special control signaling, such as a specific DCI format that is used to indicate configuration information of a control channel in a current frame or one or more subsequent frames (e.g., resource locations within the DD domain, or configuration of DCCEs, etc.).

The common DCI resource locations are placed within the CR. Optionally, the location of the DD domain target resource may be determined by at least one of the following parameters: system frame number, system bandwidth, location of DRE of DD domain (e.g., value of M, value of N), cell ID, and user equipment specific (UE specific) ID. The UE specific ID is e.g. a cell radio network temporary identifier (Cell Radio Network Temporary Identifier, C-RNTI).

Alternatively, the common DCI resource locations may be located in a specific numbered DCCE. In practice, this specific number is indicated by a broadcast message.

Optionally, the first communication device may receive DD domain Search Space (SS) configuration information sent by the second communication device, in addition to or in addition to receiving the CORESET configuration information of the DD domain sent by the second communication device; the SS configuration information of the DD domain is used for indicating the resource range of the control information of the DD domain searched by the terminal. For example, the SS configuration information of the DD domain may include: CORESET corresponding to DD domain SS, and resource search range.

The embodiment of the application defines the flow of resource searching by the UE in the DD domain CORESET. For a specific UE, CORESET only gives the resource range where the control message is located, considering that SS configuration information of the DD domain may instruct the UE to search for the resource range of the control information of the DD domain, resource searching is performed by according to CORESET configuration and SS configuration messages. Based on this scheme, when multiple UEs multiplex the same CORESET, SS configuration for each UE is performed using separate radio resource control (Radio Resource Control, RRC) signaling, which can reduce search complexity.

An implementation of the second communication device transmitting CORESET configuration information of the DD domain and SS configuration information of the DD domain is described herein. The implementation manner of the second communication device sending the CORESET configuration information of the DD domain and the SS configuration information of the DD domain includes at least one of the following:

1) The CORESET configuration information of the DD domain is carried in a broadcast message, and the SS configuration information of the DD domain is carried in a dedicated radio resource control (dedicated RRC) message.

Specifically, the CORESET configuration information (which may be denoted coreset_config) is sent by a broadcast message, and all UEs within the cell receive the same coreset_config. The broadcast message includes a master information block (Master Information Block, MIB) or a system information block (System Information Block, SIB), which may be transmitted in a physical broadcast channel (Physical Broadcast Channel, PBCH) or a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH).

SS configuration information (which may be denoted as ss_config) of the DD domain is transmitted by a dedicated RRC message, which is transmitted in the PDSCH. Different UEs receive different ss_configs, so that detection of control messages is performed within the respective allocated resource ranges.

2) The CORESET configuration information of the DD domain and the SS configuration information of the DD domain are both carried in the dedicated RRC message.

Specifically, coreset_config and ss_config are both sent by a decoded RRC message, which is sent in PDSCH. Different UEs receive dedicated CORESET _ config and SS _ config combinations to perform detection of control messages within the respective allocated resources.

3) The CORESET configuration information of the DD domain and the SS configuration information of the DD domain are both carried in the broadcast message.

Specifically, coreset_config and ss_config are both sent in broadcast messages, and all UEs in the cell receive the same coreset_config. Different UEs receive the same CORESET _ config and SS _ config combinations, so that the detection of the respective control messages is performed within the same resource range. The broadcast message includes MIB or SIB, and the broadcast message may be transmitted in PBCH or PDSCH.

Based on this, the implementation manner of detecting the control channel of the DD domain by the first communication device based on the CORESET configuration information of the DD domain may include: and the first communication equipment performs resource searching based on the CORESET configuration information of the DD domain and the SS configuration information of the DD domain, and detects a control channel of the DD domain.

Optionally, the resource scope includes at least one of:

1) A first search range including a delay start position and a Doppler start position (k) ₀ ，l ₀ ) Delay termination position and Doppler termination position (k) _end ，l _end )；k ₀ For extendingLate start position, l ₀ For Doppler start position, k _end To delay the end position, l _end Is the Doppler terminated position; wherein, (k) ₀ ，l ₀ )，(k _end ，l _end ) May include at least one of:

(a) Two-dimensional coordinates of DCCE on DD domain resource grid;

(b) Offset of DCCE with respect to a reference position on the DD domain resource grid.

Here, searching may be understood as searching for a channel, which is typically performed using scrambling codes for blind detection.

2) A second search range including the searched Doppler start position l ₀ And Doppler termination position l _end The method comprises the steps of carrying out a first treatment on the surface of the Wherein l ₀ 、l _end May include at least one of:

(a) Doppler dimension coordinates of DCCE on DD domain resource grid;

(b) Offset of DCCE relative to a Doppler dimension reference position on the DD domain resource grid.

3) A third search range including a search delay start position k ₀ And delay termination position k _end The method comprises the steps of carrying out a first treatment on the surface of the Wherein k is ₀ 、k _end May include at least one of:

(a) The delay dimension coordinates of the DCCE on the DD domain resource grid;

(b) Offset of DCCE relative to a certain delay dimension reference position on the DD domain resource grid.

4) And a fourth searching range comprising the searched DCCE number index.

In the embodiment of the application, the transmission modes of the control channel of the DD domain and the data channel of the DD domain comprise any one of the following modes:

the control channels of the transmission mode 1 and the DD domain are multiplexed with the data channels of the DD domain on the same DD domain resource grid.

Specifically, the multiplexing mode mentioned in case 1 has the following characteristics: the pilot position is configured by broadcast signaling or RRC signaling; the pilot locations may be located in either the control channel or the data channel of the DD domain. When the receiving device demodulates, it is necessary to demodulate the information of the control channel (i.e. CORESET) and the data channel in the DD domain at the same time, and then decode the demodulated symbols located in CORESET to obtain the control message.

Optionally, in the case that the control channel of the DD domain and the data channel of the DD domain are multiplexed on the same DD domain resource grid, the CORESET configuration information of the DD domain (carried by broadcast signaling or RRC signaling) may include any one of the following:

(1) And the first position information is used for indicating the position of the control channel of the DD domain in the DD domain resource grid. The first location information, CORESET start resource location, is offset (both delay and Doppler dimensions) relative to the entire DD domain resource grid.

(2) And second position information, which is used for indicating the position of the pilot frequency in the DD domain resource grid. The first position information, i.e. the pilot start resource position, is offset (two dimensions of delay and Doppler) relative to the entire DD domain resource grid.

The control channels of transmission scheme 2 and DD domain use one DD domain resource grid alone.

Specifically, the multiplexing manner mentioned in case 2 has the following characteristics: on one hand, the control channel is independently modulated and demodulated, so that extra demodulation overhead and time delay when multiplexing with a data channel are avoided; on the other hand, according to the DD domain copy transmission of the CORESET as required, namely the CORESET burst of the DD domain, M and N can be increased, so that the delay resolution and Doppler resolution of signals are increased, and the reliability of a control channel is improved.

Optionally, in the case that the control channel of the DD domain alone uses one DD domain resource grid, the CORESET configuration information of the DD domain includes at least one of the following:

(1) First indication information for indicating whether a control channel of the DD domain is separately modulated; for example, 1bit may be used to indicate whether the control channel is modulated alone.

(2) And second indication information for indicating a duplicate transmission mode of a control channel of the DD domain. For example, the X-bit indicates a duplicate transmission mode of the control channel; where X may be a power of 2.

Fig. 3 is a second flowchart of a method for indicating a control channel resource of a DD domain according to an embodiment of the present application, as shown in fig. 3, the method may include step 301; wherein:

step 301, the second communication device sends control resource set CORESET configuration information of the DD domain to the first communication device; the CORESET configuration information of the DD domain is used to instruct the first communication device to detect a control channel of the DD domain.

It should be noted that the embodiments of the present application may be applied to OTFS systems. The CORESET configuration information of the DD domain is used to indicate a resource mapping rule of a control channel of the DD domain, that is, a definition of the CORESET of the DD domain. The minimum resource unit of the control channel of the DD domain is DRE.

In the method for indicating the control channel resources of the DD domain, which is provided by the embodiment of the application, the second communication device sends the control resource set CORESET configuration information of the DD domain to the first communication device so as to indicate the first communication device to detect the control channel of the DD domain, thereby realizing the indication of the control channel resources of the DD domain by utilizing the DD domain resources to bear the OTFS system control information.

Optionally, the CORESET configuration information of the DD domain includes at least one of the following:

a mapping mode, configured to instruct a control channel element DCCE of the DD domain to be mapped on a DD domain resource grid according to a delay dimension and/or a doppler dimension, and a size of the mapped resource block;

aggregation level AL, for indicating an aggregation level of DCCE in a delay dimension and/or a doppler dimension;

the CORESET region CR comprises a group of DD domain resource elements DRE which are continuous on DD domain resources;

the repetition level RL is used for indicating the copying and mapping times of the DCCE in the Doppler dimension;

the single identifier SF is used for indicating whether the control channel of the DD domain and the data channel of the DD domain are transmitted in a multiplexing way or not;

the position of pilot frequency in DD domain resource grid;

the control channel of DD domain is in the position of DD domain resource grid;

the CORESET burst of the DD domain includes the CORESET number.

Optionally, the DCCE comprises m×n DREs; the m is the DRE number of the delay dimension; and n is the DRE number of the Doppler dimension.

Optionally, the mapping mode includes at least one of:

a first mode for indicating that m >1 and n=1 in case DCCE is mapped only in terms of delay dimension;

a second mode for indicating that m=1 and n >1 in case DCCE is mapped only in terms of doppler dimension;

a third mode for indicating that m >1 and n >1 in case DCCE is mapped according to delay dimension and doppler dimension.

Optionally, the AL includes at least one of:

a first aggregation mode for indicating DCCEs to aggregate only in accordance with a delay dimension;

a second aggregation mode for indicating DCCE to aggregate only in the doppler dimension;

and a third aggregation mode, configured to instruct DCCE to aggregate according to a delay dimension and a doppler dimension.

Optionally, the second communication device sends control resource set CORESET configuration information of the DD domain to the first communication device, including at least one of:

the second communication device sends a broadcast message to the first communication device; the broadcast message comprises CORESET configuration information of the DD domain;

the second communication device sends CORESET configuration information of the DD domain to the first communication device on a DD domain target channel; the DD domain target channel is a dedicated channel for bearing CORESET configuration information of the DD domain;

The second communication device sends CORESET configuration information of the DD domain to the first communication device on DD domain target resources; the DD domain target resource is a resource for transmitting CORESET configuration information of the DD domain.

Optionally, the resource location of the DD domain target channel is determined by at least one of the following parameters:

CR location, system frame number, time domain location, time domain period, system bandwidth, transport format, coding, location of DRE in DD domain, frequency domain location in time-frequency TF domain, and cell identification ID.

Optionally, the location of the DD domain target resource is determined by at least one of the following parameters:

system frame number, system bandwidth, location of DRE of DD domain, cell ID and ID of user equipment specific UE specific.

Optionally, the method further comprises:

the second communication device sends search space SS configuration information of the DD domain to the first communication device; the SS configuration information of the DD domain is used for indicating the resource range of the control information of the DD domain searched by the terminal.

Optionally, the resource scope includes at least one of:

a first search range including a delay start position, a delay end position, a Doppler start position, and a Doppler end position of the search;

A second search range including a searched Doppler start position and a searched Doppler end position;

a third search range including a delay start position and a delay end position of the search;

and a fourth searching range comprising the searched DCCE number index.

Optionally, the CORESET configuration information of the DD domain is carried in a broadcast message, and the SS configuration information of the DD domain is carried in a dedicated radio resource control (dedicated RRC) message; or alternatively, the process may be performed,

the CORESET configuration information of the DD domain and the SS configuration information of the DD domain are carried in a polarized RRC message; or alternatively, the process may be performed,

the CORESET configuration information of the DD domain and the SS configuration information of the DD domain are both carried in a broadcast message.

Optionally, the control channel of the DD domain and the data channel of the DD domain are multiplexed on the same DD domain resource grid;

alternatively, the control channel of the DD domain alone uses one DD domain resource grid.

Optionally, in the case that the control channel of the DD domain and the data channel of the DD domain are multiplexed on the same DD domain resource grid, the CORESET configuration information of the DD domain includes:

the first position information is used for indicating the position of a control channel of the DD domain in the DD domain resource grid;

and second position information, which is used for indicating the position of the pilot frequency in the DD domain resource grid.

first indication information for indicating whether a control channel of the DD domain is separately modulated;

and second indication information for indicating a duplicate transmission mode of a control channel of the DD domain.

The execution body can be the indication device of the control channel resource of the DD domain. In the embodiment of the application, the indication device of the control channel resource of the DD domain is taken as an example to execute the indication method of the control channel resource of the DD domain.

Fig. 4 is a schematic structural diagram of an apparatus for indicating a control channel resource of a DD domain according to an embodiment of the present application, as shown in fig. 4, where the apparatus 400 for indicating a control channel resource of a DD domain is applied to a first communication device, and includes:

an obtaining module 401, configured to obtain control resource set CORESET configuration information of the DD domain;

a detection module 402, configured to detect a control channel of the DD domain based on the CORESET configuration information of the DD domain.

In the indication device for the DD domain control channel resource provided by the embodiment of the application, the DD domain control channel is detected based on the obtained CORESET configuration information of the DD domain, so that the DD domain control channel resource indication of carrying the OTFS system control information by utilizing the DD domain resource is realized.

the position of pilot frequency in DD domain resource grid;

the control channel of DD domain is in the position of DD domain resource grid;

the CORESET burst of the DD domain includes the CORESET number.

Optionally, the mapping mode includes at least one of:

Optionally, the AL includes at least one of:

Optionally, the obtaining module 401 is specifically configured to: based on protocol predefined information, CORESET configuration information for the DD domain is determined.

Optionally, the obtaining module 401 is specifically configured to at least one of the following:

receiving a broadcast message sent by the second communication device; the broadcast message comprises CORESET configuration information of the DD domain;

receiving CORESET configuration information of the DD domain, which is sent by the second communication device on a DD domain target channel; the DD domain target channel is a dedicated channel for bearing CORESET configuration information of the DD domain;

Receiving CORESET configuration information of the DD domain, which is sent by the second communication device on the DD domain target resource; the DD domain target resource is a resource for transmitting CORESET configuration information of the DD domain.

Optionally, the apparatus further comprises:

a receiving module, configured to receive search space SS configuration information of a DD domain sent by the second communications device; the SS configuration information of the DD domain is used for indicating the resource range of the control information of the DD domain searched by the terminal.

Optionally, the resource scope includes at least one of:

and a fourth searching range comprising the searched DCCE number index.

Optionally, the detection module 402 is specifically configured to: and detecting a control channel of the DD domain based on the CORESET configuration information of the DD domain and the SS configuration information of the DD domain.

Fig. 5 is a second schematic structural diagram of an apparatus for indicating a control channel resource of a DD domain according to an embodiment of the present application, as shown in fig. 5, the apparatus 500 for indicating a control channel resource of a DD domain is applied to a second communication device, and includes:

a first sending module 501, configured to send control resource set CORESET configuration information of the DD domain to a first communication device; the CORESET configuration information of the DD domain is used to instruct the first communication device to detect a control channel of the DD domain.

In the indication device for the control channel resources of the DD domain provided by the embodiment of the application, the second communication equipment sends the control resource set CORESET configuration information of the DD domain to the first communication equipment so as to instruct the first communication equipment to detect the control channel of the DD domain, thereby realizing the indication of the control channel resources of the DD domain by utilizing the DD domain resources to bear the OTFS system control information.

the position of pilot frequency in DD domain resource grid;

the control channel of DD domain is in the position of DD domain resource grid;

the CORESET burst of the DD domain includes the CORESET number.

Optionally, the mapping mode includes at least one of:

Optionally, the AL includes at least one of:

Optionally, the first sending module 501 is configured to at least one of the following:

transmitting a broadcast message to the first communication device; the broadcast message comprises CORESET configuration information of the DD domain;

transmitting CORESET configuration information for a DD domain to the first communication device on a DD domain target channel; the DD domain target channel is a dedicated channel for bearing CORESET configuration information of the DD domain;

transmitting CORESET configuration information of the DD domain to the first communication device on a DD domain target resource; the DD domain target resource is a resource for transmitting CORESET configuration information of the DD domain.

Optionally, the apparatus further comprises:

a second sending module, configured to send search space SS configuration information of a DD domain to the first communication device; the SS configuration information of the DD domain is used for indicating the resource range of the control information of the DD domain searched by the terminal.

Optionally, the resource scope includes at least one of:

and a fourth searching range comprising the searched DCCE number index.

The indication device of the control channel resource of the DD domain in the embodiment of the application can be an electronic device, such as an electronic device with an operating system, or can be a component in the electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. By way of example, terminals may include, but are not limited to, the types of terminals 11 listed above, other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., and embodiments of the application are not specifically limited.

The indication device for the control channel resource of the DD domain provided by the embodiment of the present application can implement each process implemented by the embodiments of the methods of fig. 1 to 3, and achieve the same technical effects, and for avoiding repetition, a detailed description is omitted herein.

Fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application, as shown in fig. 6, the communication device 600 includes a processor 601 and a memory 602, where the memory 602 stores a program or an instruction that can be executed on the processor 601, for example, when the communication device 600 is a first communication device, the program or the instruction is executed by the processor 601 to implement each step of the above embodiment of the method for indicating a control channel resource of a DD domain on a first communication device side, and the same technical effects can be achieved. When the communication device 600 is a second communication device, the program or the instruction, when executed by the processor 601, implements the steps of the method embodiment for indicating the control channel resource of the DD domain on the second communication device side, and can achieve the same technical effects, so that repetition is avoided, and no further description is given here.

The embodiment of the application also provides first communication equipment which comprises a processor and a communication interface; the communication interface is used for acquiring control resource set CORESET configuration information of the DD domain; the processor is configured to detect a control channel of the DD domain based on the CORESET configuration information of the DD domain.

The first communication device embodiment corresponds to the first communication device side method embodiment, and each implementation process and implementation manner of the method embodiment are applicable to the first communication device embodiment, and the same technical effects can be achieved.

The embodiment of the application also provides second communication equipment which comprises a processor and a communication interface; the communication interface is used for sending control resource set CORESET configuration information of the DD domain to the first communication device; the CORESET configuration information of the DD domain is used to instruct the first communication device to detect a control channel of the DD domain.

The second communication device embodiment corresponds to the second communication device side method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the second communication device embodiment, and the same technical effects can be achieved.

Optionally, in the case where the first communication device includes a terminal and the second communication device includes a network side device, fig. 7 is a schematic structural diagram of the terminal provided in the embodiment of the present application, as shown in fig. 7, the terminal 700 includes, but is not limited to: at least some of the components of the radio frequency unit 701, the network module 702, the audio output unit 703, the input unit 704, the sensor 705, the display unit 706, the user input unit 707, the interface unit 708, the memory 709, and the processor 710.

Those skilled in the art will appreciate that the terminal 700 may further include a power source (e.g., a battery) for powering the various components, and that the power source may be logically coupled to the processor 710 via a power management system so as to perform functions such as managing charging, discharging, and power consumption via the power management system. The terminal structure shown in fig. 7 does not constitute a limitation of the terminal, and the terminal may include more or less components than shown, or may combine certain components, or may be arranged in different components, which will not be described in detail herein.

It should be appreciated that in embodiments of the present application, the input unit 704 may include a graphics processing unit (Graphics Processing Unit, GPU) 7041 and a microphone 7042, with the graphics processor 7041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 706 may include a display panel 7061, and the display panel 7061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 707 includes at least one of a touch panel 7071 and other input devices 7072. The touch panel 7071 is also referred to as a touch screen. The touch panel 7071 may include two parts, a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

In the embodiment of the present application, after receiving downlink data from a network side device, the radio frequency unit 701 may transmit the downlink data to the processor 710 for processing; in addition, the radio frequency unit 701 may send uplink data to the network side device. Typically, the radio unit 701 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 709 may be used to store software programs or instructions and various data. The memory 709 may mainly include a first storage area storing programs or instructions and a second storage area storing data, wherein the first storage area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 709 may include volatile memory or nonvolatile memory, or the memory 709 may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). Memory 709 in embodiments of the application includes, but is not limited to, these and any other suitable types of memory.

Processor 710 may include one or more processing units; optionally, processor 710 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, and the like, and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 710.

The radio frequency unit 701 is configured to obtain control resource set CORESET configuration information of the DD domain;

a processor 710 for detecting a control channel of the DD domain based on the CORESET configuration information of the DD domain.

Optionally, in the case where the first communication device includes a terminal and the second communication device includes a network side device, fig. 8 is a schematic structural diagram of the network side device provided in the embodiment of the present application, as shown in fig. 8, where the network side device 800 includes: an antenna 801, a radio frequency device 802, a baseband device 803, a processor 804, and a memory 805. The antenna 801 is connected to a radio frequency device 802. In the uplink direction, the radio frequency device 802 receives information via the antenna 801, and transmits the received information to the baseband device 803 for processing. In the downlink direction, the baseband device 803 processes information to be transmitted, and transmits the processed information to the radio frequency device 802, and the radio frequency device 802 processes the received information and transmits the processed information through the antenna 801.

The method performed by the network side device in the above embodiment may be implemented in the baseband apparatus 803, where the baseband apparatus 803 includes a baseband processor.

The baseband device 803 may, for example, comprise at least one baseband board, on which a plurality of chips are disposed, as shown in fig. 8, where one chip, for example, a baseband processor, is connected to the memory 805 through a bus interface, so as to invoke a program in the memory 805 to perform the network device operation shown in the above method embodiment.

The network side device may also include a network interface 806, such as a common public radio interface (common public radio interface, CPRI).

Specifically, the network side device 800 of the embodiment of the present application further includes: instructions or programs stored in the memory 805 and executable on the processor 804, the processor 804 invokes the instructions or programs in the memory 805 to perform the method for indicating the control channel resources of the DD domain as described above, and achieve the same technical effects, and are not repeated here.

The embodiment of the application also provides an indication system of the control channel resource of the DD domain, which comprises the following steps: a first communication device operable to perform the steps of the method as described in the first aspect, and a second communication device operable to perform the steps of the method as described in the second aspect.

The embodiment of the application also provides a readable storage medium, which may be volatile or non-volatile, and the readable storage medium stores a program or an instruction, where the program or the instruction implements each process of the embodiment of the method for indicating the control channel resource of the DD domain when executed by the processor, and the same technical effects can be achieved, so that repetition is avoided and no further description is given here.

Wherein the processor is a processor in the terminal described in the above embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc.

The embodiment of the application further provides a chip, the chip comprises a processor and a communication interface, the communication interface is coupled with the processor, the processor is used for running a program or instructions, the various processes of the embodiment of the method for indicating the control channel resource of the DD domain are realized, the same technical effects can be achieved, and the repetition is avoided, and the description is omitted here.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

The embodiments of the present application further provide a computer program/program product, where the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement the respective processes of the above-mentioned embodiment of the method for indicating control channel resources of DD domain, and the same technical effects can be achieved, so that repetition is avoided, and details are not repeated here.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.

Claims

1. A method for indicating control channel resources of a delay-doppler domain DD domain, comprising:

2. The method for indicating control channel resources of a delay-doppler domain DD domain according to claim 1, wherein the CORESET configuration information of the DD domain comprises at least one of:

the position of pilot frequency in DD domain resource grid;

the control channel of DD domain is in the position of DD domain resource grid;

The CORESET burst of the DD domain includes the CORESET number.

3. The method of claim 2, wherein the DCCE comprises m x n DREs; the m is the DRE number of the delay dimension; and n is the DRE number of the Doppler dimension.

4. A method of indicating control channel resources for a delay-doppler domain DD domain as claimed in claim 3, wherein the mapping mode comprises at least one of:

5. The method for indicating control channel resources of a delay-doppler domain DD domain of claim 2, wherein the AL comprises at least one of:

6. The method for indicating control channel resources of a delay-doppler domain DD domain of claim 1, wherein the first communication device obtaining CORESET configuration information of the DD domain comprises:

the first communication equipment receives COESET configuration information of the DD domain sent by the second communication equipment;

the first communication device determines CORESET configuration information for the DD domain based on protocol predefined information.

7. The method for indicating control channel resources of a DD domain of a delay-doppler domain of claim 6, wherein the first communication device receiving CORESET configuration information of the DD domain sent by a second communication device comprises at least one of:

the first communication equipment receives a broadcast message sent by the second communication equipment; the broadcast message comprises CORESET configuration information of the DD domain;

the first communication equipment receives CORESET configuration information of a DD domain, which is sent by the second communication equipment on a DD domain target channel; the DD domain target channel is a dedicated channel for bearing CORESET configuration information of the DD domain;

the first communication equipment receives CORESET configuration information of the DD domain, which is sent by the second communication equipment on target resources of the DD domain; the DD domain target resource is a resource for transmitting CORESET configuration information of the DD domain.

8. The method of claim 7, wherein the resource location of the DD domain target channel is determined by at least one of the following parameters:

9. The method of claim 7, wherein the location of the DD domain target resource is determined by at least one of the following parameters:

10. The method for indicating control channel resources of a delay-doppler domain DD domain according to any of the claims 1 to 9, characterized in that the method further comprises:

the first communication equipment receives search space SS configuration information of a DD domain sent by the second communication equipment; the SS configuration information of the DD domain is used for indicating the resource range of the control information of the DD domain searched by the terminal.

11. The method of claim 10, wherein the resource range comprises at least one of:

and a fourth searching range comprising the searched DCCE number index.

12. The method for indicating control channel resources of a DD domain of a delay-doppler domain according to claim 10 or 11, wherein the first communication device detecting the control channel of the DD domain based on CORESET configuration information of the DD domain comprises:

the first communication device detects a control channel of the DD domain based on the CORESET configuration information of the DD domain and the SS configuration information of the DD domain.

13. The method for indicating control channel resources of a DD domain of a delay-doppler domain according to any one of claims 10 to 12, wherein CORESET configuration information of the DD domain is carried in a broadcast message and SS configuration information of the DD domain is carried in a dedicated radio resource control (dded RRC) message; or alternatively, the process may be performed,

14. The method for indicating control channel resources of a delay-doppler domain DD domain of claim 1, wherein the control channel of the DD domain and a data channel of the DD domain are multiplexed on the same DD domain resource grid;

15. The method for indicating control channel resources of a DD domain of delay-doppler domain according to claim 14, wherein in case that the control channel of the DD domain and the data channel of the DD domain are multiplexed on the same DD domain resource grid, the CORESET configuration information of the DD domain includes:

16. The method for indicating control channel resources of a delay-doppler domain DD domain according to claim 14, wherein in case that a DD domain resource grid is used by a control channel of the DD domain alone, the CORESET configuration information of the DD domain includes at least one of the following:

17. A method for indicating control channel resources of a delay-doppler domain DD domain, comprising:

18. The method for indicating control channel resources of a delay-doppler domain DD domain of claim 17, wherein the CORESET configuration information of the DD domain comprises at least one of:

the position of pilot frequency in DD domain resource grid;

the control channel of DD domain is in the position of DD domain resource grid;

the CORESET burst of the DD domain includes the CORESET number.

19. The method of claim 18, wherein the DCCE comprises m x n DREs; the m is the DRE number of the delay dimension; and n is the DRE number of the Doppler dimension.

20. The method of claim 19, wherein the mapping mode comprises at least one of:

21. The method of claim 18, wherein the AL comprises at least one of:

22. The method for indicating control channel resources of a DD domain of a delay-doppler domain of claim 17, wherein the second communication device sends control resource set CORESET configuration information of the DD domain to the first communication device, comprising at least one of:

23. The method of claim 22, wherein the resource location of the DD domain target channel is determined by at least one of the following parameters:

24. The method of claim 22, wherein the location of the DD domain target resource is determined by at least one of the following parameters:

25. The method of indicating control channel resources of a delay-doppler domain DD domain according to any of the claims 17 to 24, characterized in that the method further comprises:

26. The method of claim 25, wherein the resource range comprises at least one of:

and a fourth searching range comprising the searched DCCE number index.

27. The method for indicating control channel resources of a DD domain of delay-doppler domain according to claim 25 or 26, wherein CORESET configuration information of the DD domain is carried in a broadcast message, and SS configuration information of the DD domain is carried in a dedicated radio resource control (dded RRC) message; or alternatively, the process may be performed,

28. The method for indicating control channel resources of a delay-doppler domain DD domain of claim 17, wherein the control channel of the DD domain and the data channel of the DD domain are multiplexed on the same DD domain resource grid;

29. The method for indicating control channel resources of a DD domain of a delay-doppler domain of claim 28, wherein, in a case where a control channel of the DD domain and a data channel of the DD domain are multiplexed on the same DD domain resource grid, CORESET configuration information of the DD domain includes:

30. The method for indicating control channel resources of a delay-doppler domain DD domain of claim 28, wherein in case that a DD domain resource grid is used by a control channel of the DD domain alone, CORESET configuration information of the DD domain includes at least one of:

31. An indication device for control channel resources of a delay-doppler domain DD domain, comprising:

32. An indication device for control channel resources of a delay-doppler domain DD domain, comprising:

33. A first communication device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of a method of indicating control channel resources of a delay-doppler domain DD domain as claimed in any one of claims 1 to 16.

34. A second communication device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method of indicating control channel resources of the delay-doppler-domain DD domain of any one of claims 17 to 30.

35. A readable storage medium, wherein a program or instructions is stored on the readable storage medium, which when executed by a processor, implements a method of indicating control channel resources of a delay-doppler domain DD domain according to any one of claims 1-16, or the steps of a method of indicating control channel resources of a delay-doppler domain DD domain according to any one of claims 17 to 30.