CN115868210A

CN115868210A - Transmission method of control channel, terminal equipment and network equipment

Info

Publication number: CN115868210A
Application number: CN202080103208.XA
Authority: CN
Inventors: 吴作敏
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2023-03-28
Also published as: WO2022077509A1

Abstract

The application relates to a transmission method of a control channel, a terminal device and a network device, wherein the method comprises the following steps: determining a first set of control resources, the first set of control resources corresponding to a first subcarrier spacing, the first set of control resources comprising Nsymb symbols in a time domain; detecting a first control channel candidate in the first control resource set, wherein the first control channel comprises at least one Control Channel Element (CCE), and one CCE in the first control resource set comprises S Resource Element Groups (REGs) in the first control resource set, wherein one REG in the first control resource set comprises one symbol in the first control resource set in a time domain and one Resource Block (RB) corresponding to the symbol in the first control resource set in a frequency domain, or comprises N continuous symbols in the first control resource set in a time domain and M subcarriers corresponding to the N continuous symbols in the first control resource set in the frequency domain. The transmission of the control channel in the high-frequency range can be realized by utilizing the embodiment of the application.

Description

Transmission method of control channel, terminal equipment and network equipment

Technical Field

The present application relates to the field of communications, and in particular, to a transmission method of a control channel, a terminal device, and a network device.

Background

With the evolution of New Radio (NR) technology of the fifth generation mobile communication 5G, research on New Frequency bands (e.g. 52.6GHz to 71GHz or high Frequency) has been started on the basis of research on Frequency range 1 (fr1) and Frequency range 2 (fr2). In high frequency systems, the length of one symbol is shorter due to the introduction of larger subcarrier spacing. For the terminal device, under the condition that the behavior of the terminal device for detecting the PDCCH candidates is the same, for example, under the condition that the number of PDCCH candidates to be detected by the terminal device and the aggregation level corresponding to the PDCCH candidates are constant, if the configured CORESET includes the same number of RBs and the same number of symbols, the larger the subcarrier interval is, the larger the frequency domain bandwidth corresponding to the CORESET that the terminal device needs to detect is, the higher the channel estimation capability of the terminal device needs to be provided, and thus, the above situation may bring greater challenges to the channel estimation capability of the terminal device. In addition, the shorter symbols may result in less transmit power of the terminal device, thereby causing the coverage performance of the PDCCH to be affected.

Disclosure of Invention

In view of this, embodiments of the present application provide a transmission method for a control channel, a terminal device, and a network device, which can be used for transmission of the control channel in a high frequency range.

The embodiment of the application provides a transmission method of a control channel, which is applied to terminal equipment and comprises the following steps:

determining a first set of control resources, the first set of control resources corresponding to a first subcarrier spacing, the first set of control resources comprising N in the time domain _symb A symbol, N _symb Is a positive integer;

detecting a first control channel candidate in the first set of control resources, the first control channel comprising at least one control channel element, CCE, wherein one CCE in the first set of control resources comprises S resource element groups, REGs, in the first set of control resources, S being a positive integer, wherein,

one REG in the first control resource set comprises one symbol in the first control resource set in a time domain and one resource block RB corresponding to the symbol in the first control resource set in a frequency domain; or,

one REG in the first control resource set includes N consecutive symbols in the first control resource set in a time domain, and includes M subcarriers corresponding to the N consecutive symbols in the first control resource set in a frequency domain, where N and M are positive integers.

The embodiment of the application provides a transmission method of a control channel, which is applied to network equipment and comprises the following steps:

sending first configuration information to a terminal device, where the first configuration information is used to determine a first control resource set, the first control resource set corresponds to a first subcarrier interval, and the first control resource set includes N in a time domain _symb A symbol, N _symb Is a positive integer;

transmitting a first control channel in the first set of control resources, the first control channel comprising at least one control channel element, CCE, wherein one CCE in the first set of control resources comprises S resource element groups, REGs, in the first set of control resources, S being a positive integer, wherein,

one REG in the first control resource set includes N consecutive symbols in the first control resource set in a time domain and M subcarriers corresponding to the N consecutive symbols in the first control resource set in a frequency domain, where N and M are both positive integers.

An embodiment of the present application further provides a terminal device, including:

a determining module configured to determine a first set of control resources, the first set of control resources corresponding to a first subcarrier spacing, the first set of control resources including N in a time domain _symb A symbol, N _symb Is a positive integer;

a detecting module, configured to detect a first control channel candidate in the first control resource set, where the first control channel includes at least one control channel element CCE, where one CCE in the first control resource set includes S resource element groups REG in the first control resource set, and S is a positive integer; wherein,

An embodiment of the present application further provides a network device, including:

a first sending module, configured to send first configuration information to a terminal device, where the first configuration information is used to determine a first control resource set, the first control resource set corresponds to a first subcarrier interval, and the first control resource set includes N in a time domain _symb A symbol, N _symb Is a positive integer;

a second transmitting module, configured to transmit a first control channel in the first set of control resources, the first control channel comprising at least one control channel element CCE, wherein one CCE in the first set of control resources comprises S resource element groups REG in the first set of control resources, S being a positive integer, wherein,

An embodiment of the present application further provides a terminal device, including: a processor and a memory for storing a computer program, the processor calling and executing the computer program stored in the memory to perform the method as described above.

An embodiment of the present application further provides a network device, including: a processor and a memory for storing a computer program, the processor calling and executing the computer program stored in the memory to perform the method as described above.

An embodiment of the present application further provides a chip, including: and the processor is used for calling and running the computer program from the memory so that the equipment provided with the chip executes the method.

Embodiments of the present application further provide a computer-readable storage medium for storing a computer program, where the computer program causes a computer to execute the method described above.

Embodiments of the present application also provide a computer program product, which includes computer program instructions, where the computer program instructions cause a computer to execute the method described above.

Embodiments of the present application also provide a computer program, which enables a computer to execute the method described above.

The embodiment of the application can be used for control channel transmission processing in various frequency ranges, is particularly suitable for control channel transmission in a high-frequency system, and can enable terminal equipment to detect more PDCCH candidates without increasing channel estimation capability when detecting control channel candidates such as PDCCH candidates, thereby improving the overall performance of the terminal.

Drawings

Fig. 1 is a schematic diagram of a communication system architecture according to an embodiment of the present application.

Fig. 2 is a schematic diagram illustrating the effect of the CORESET frequency domain resource allocation.

FIGS. 3A, 3B and 3C are, respectively, N in CORESET _symb Are each 1,2 and 3 and N _RB REG numbering scheme for 6.

Fig. 4 is a flowchart of a transmission method of a control channel according to an embodiment of the present application.

Fig. 5 is a flowchart of a transmission method of a control channel according to an embodiment of the present application.

Fig. 6A to 6C are schematic diagrams of CCE-to-REG mapping manners when the CORESET according to the embodiment of the present application includes 6 RBs in the frequency domain, 6 symbols in the time domain, and 6 REGs in one REG bundle.

Fig. 7A to 7F are schematic diagrams of CCE-to-REG mapping manners when the CORESET according to the embodiment of the present application includes 6 RBs in the frequency domain, 12 symbols in the time domain, and 6 REGs in one REG bundle.

Fig. 8A is a schematic diagram of the location of REGs in the first 2 RBs in existing CORESET.

Fig. 8B and 8C are schematic diagrams of the positions of REGs in the first 2 RBs in CORESET when Nsymb is 6 and 4, respectively, in the examples of the present application.

Fig. 9 is a schematic structural block diagram of a terminal device according to an embodiment of the present application.

Fig. 10 is a schematic structural block diagram of a network device according to an embodiment of the present application.

Fig. 11 is a schematic block diagram of a communication device according to an embodiment of the present application.

FIG. 12 is a schematic block diagram of a chip of an embodiment of the present application.

Fig. 13 is a schematic block diagram of a communication system of an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: global System for Mobile communications (GSM) System, code Division Multiple Access (CDMA) System, wideband Code Division Multiple Access (WCDMA) System, general Packet Radio Service (GPRS), long Term Evolution (Long Term Evolution, LTE) System, LTE-a System, new Radio (NR) System, evolution System of NR System, LTE-based Access to unlicensed spectrum, LTE-U) System, NR-based to unlicensed spectrum (NR-U) System, non-Terrestrial communication network (NTN) System, universal Mobile Telecommunications System (UMTS), wireless Local Area Network (WLAN), wireless Fidelity (WiFi), 5th-Generation (5G) System, or other communication systems.

Generally, conventional Communication systems support a limited number of connections and are easy to implement, however, with the development of Communication technologies, mobile Communication systems will support not only conventional Communication, but also, for example, device to Device (D2D) Communication, machine to Machine (M2M) Communication, machine Type Communication (MTC), vehicle to Vehicle (V2V) Communication, or Vehicle networking (V2X) Communication, and the embodiments of the present application can also be applied to these Communication systems.

Optionally, the communication system in the embodiment of the present application may be applied to a Carrier Aggregation (CA) scenario, may also be applied to a Dual Connectivity (DC) scenario, and may also be applied to an independent (SA) networking scenario.

Various embodiments are described in conjunction with network Equipment and terminal Equipment, where the terminal Equipment may also be referred to as User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a wireless communication device, a User agent, or a User device.

The terminal device may be a Station (ST) in a WLAN, and may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with Wireless communication capability, a computing device or other processing device connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next generation communication system such as an NR Network, or a terminal device in a future evolved Public Land Mobile Network (PLMN) Network, and the like.

In the embodiment of the application, the terminal equipment can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.).

In this embodiment, the terminal device may be a Mobile Phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in self driving (self driving), a wireless terminal device in remote medical (remote medical), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in city (smart city), a wireless terminal device in smart home (smart home), or the like.

By way of example and not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable equipment can also be called wearable intelligent equipment, is the general term of equipment that uses wearable technique to carry out intelligent design, develop can dress to daily wearing, such as glasses, gloves, wrist-watch, dress and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device includes full functionality, large size, and can implement full or partial functionality without relying on a smart phone, such as: smart watches or smart glasses and the like, and only focus on a certain type of application functions, and need to be used in cooperation with other devices such as smart phones, such as various smart bracelets for physical sign monitoring, smart jewelry and the like.

In this embodiment, the network device may be a device for communicating with a mobile device, and the network device may be an Access Point (AP) in a WLAN, a Base Station (BTS) in GSM or CDMA, a Base Station (NodeB, NB) in WCDMA, an evolved Node B (eNB, or eNodeB) in LTE, a relay Station or an Access Point, or a vehicle-mounted device, a wearable device, a network device (gNB) in an NR network, or a network device in a PLMN network for future evolution, and the like.

By way of example and not limitation, in embodiments of the present application, a network device may have a mobile nature, e.g., the network device may be a mobile device. Alternatively, the network device may be a satellite, balloon station. For example, the satellite may be a Low Earth Orbit (LEO) satellite, a Medium Earth Orbit (MEO) satellite, a geosynchronous Orbit (GEO) satellite, a High Elliptic Orbit (HEO) satellite, and the like. Alternatively, the network device may be a base station installed on land, water, or the like.

In this embodiment, a network device may provide a service for a cell, and a terminal device communicates with the network device through a transmission resource (for example, a frequency domain resource or a spectrum resource) used by the cell, where the cell may be a cell corresponding to the network device (for example, a base station), and the cell may belong to a macro base station or a base station corresponding to a Small cell (Small cell), where the Small cell may include: urban cells (Metro cells), micro cells (Micro cells), pico cells (Pico cells), femto cells (Femto cells), and the like, wherein the small cells have the characteristics of small coverage area and low transmission power, and are suitable for providing high-rate data transmission services.

Fig. 1 schematically shows one network device 1100 and two terminal devices 1200, and optionally, the wireless communication system 1000 may include a plurality of network devices 1100, and each network device 1100 may include other numbers of terminal devices within the coverage area, which is not limited in this embodiment of the present application. Optionally, the wireless communication system 1000 shown in fig. 1 may further include other network entities such as a Mobility Management Entity (MME), an Access and Mobility Management Function (AMF), and the like, which is not limited in this embodiment of the present application.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" is used herein to describe the association relationship of the associated objects, for example, it means that there may be three relationships between the associated objects before and after, for example, a and/or B may mean: the three cases of A alone, A and B simultaneously and B alone. The character "/" herein generally indicates a relationship in which the former and latter associated objects are "or".

In the description of the embodiments of the present application, the term "correspond" may indicate that there is a direct correspondence or an indirect correspondence between the two, may also indicate that there is an association between the two, and may also indicate and is indicated, configure and is configured, and the like.

In the description of the embodiment of the present application, "preset" may be implemented by saving a corresponding code, table, or other manners that may be used to indicate related information in advance in a device (for example, including a terminal device and a network device), and the present application is not limited to a specific implementation manner thereof. For example, the default may be defined in the protocol.

In the description of the embodiment of the present application, the "protocol" may refer to a standard protocol in the field of communications, and for example, may include an LTE protocol, an NR protocol, and a related protocol applied in a future communication system, which is not limited in this application.

To clearly illustrate the idea of an embodiment of the present application, a brief description is first given of the correlation of control channel transmissions in a communication system. Embodiments of the present application include some or all of the following.

1. With respect to high frequency-dependent background

The NR system currently mainly studies two frequency bands of FR1 (410 MHz-7.125 GHz) and FR2 (24.25 GHz-52.6 GHz), which are FR1:410MHz-7.125GHz, FR2:24.25GHz-52.6GHz. With the evolution of NR systems, new frequency bands, i.e., technologies on high frequencies, are also being studied. The new frequency band includes a frequency domain range of 52.6GHz-71GHz, which is denoted FRX in this application for ease of description, it being understood that the band designation should not constitute any limitation.

The FRX band includes licensed spectrum and also includes unlicensed spectrum. Alternatively, the FRX band includes both unshared spectrum and shared spectrum. Unlicensed spectrum is a nationally and regionally divided spectrum available for communication by radio devices, which is generally considered a shared spectrum, i.e., a spectrum may be used by communication devices in different communication systems as long as the regulatory requirements set on the spectrum by countries or regions are met, without applying for proprietary spectrum authorization.

In order for various communication systems that use unlicensed spectrum for wireless communications to be able to coexist friendly on the spectrum, some countries or regions prescribe regulatory requirements that must be met using unlicensed spectrum. For example, the communication device follows the principle of "Listen Before Talk (LBT)", that is, before the communication device performs signal transmission on a channel of an unlicensed spectrum, the communication device needs to perform channel sensing first, and only when the channel sensing result is that the channel is idle, the communication device can perform signal transmission; if the channel sensing result of the communication device on the channel of the unlicensed spectrum is that the channel is busy, the communication device cannot perform signal transmission. For another example, in order to ensure fairness, the communication device cannot use the channel of the unlicensed spectrum for signal transmission for a period of time exceeding a certain period of time in one transmission. For another example, in order to avoid that the power of the signal transmitted on the channel of the unlicensed spectrum is too large, which affects the transmission of other important signals on the channel, the communication device needs to follow a limit not exceeding the maximum power spectral density when transmitting signals using the channel of the unlicensed spectrum.

Note that the FRX band may consider a larger subcarrier spacing than that of FR2, and the current candidate subcarrier spacing includes at least one of: 240kHz, 480kHz, 960kHz, 1.92MHz, 3.84MHz. As an example, the corresponding parameter set (Numerology) at these candidate subcarrier spacings is shown in table 1.

TABLE 1

Subcarrier spacing	Length of symbol	Normal CP length	Extending CP Length	Time slot length
240kHz	4.16us	0.292us	1.04us	62.5us
480kHz	2.08us	0.146us	0.52us	31.25us

960kHz	1.04us	0.073us	0.26us	15.625us
1.92MHz	0.52us	0.037us	0.13us	7.8125us
3.84MHz	0.26us	0.018us	0.065us	3.90625us

2. Transmission on control channel in NR

In the NR system, a resource set for transmitting a Physical Downlink Control Channel (PDCCH) is called a Control-resource set (CORESET). A CORESET may include N in the frequency domain _RB A plurality of RBs, which may include N in time domain _symb A symbol. Wherein, the time domain resource N _symb The network device is configured by a high-level parameter, such as duration, and the value range is 1 to 3. Frequency of CORESETDomain resource N _RB The network device is configured by a high-level parameter (e.g., frequency domain resources), and specifically, may be configured by means of bit mapping. For example, frequency domain resources includes 45 bits, where each bit corresponds to 1 PRB group, and each PRB group includes 6 RBs. A bandwidth part BWP may include non-overlapping and consecutive PRB groups, the bit stream and the PRB groups included in the BWP have a one-to-one mapping relationship,

wherein, the 1 st bit corresponds to the 1 st PRB group in a BWP, and the starting position of the 1 st PRB group is determined according to the starting position Nstart of the BWP, that is, the index of the first PRB in the 1 st PRB group is 6 × ceil (Nstart/6), where ceil represents the upper rounding. Fig. 2 shows an example of CORESET frequency domain resource configuration. If the bit value is 1, the corresponding PRB is configured as CORESET, and if the bit value is 0, the corresponding PRB is not configured as CORESET.

One control-channel element (CCE) includes 6 resource-element groups (REGs), and one REG in the CORESET includes one RB corresponding to one symbol. In a CORESET, the REG numbers are numbered in time domain followed by frequency domain. FIGS. 3A, 3B and 3C show N in a CORESET _RB Is 6 RB and N _symb Numbering scheme for REG at 1,2 and 3 symbols respectively.

One terminal device can be configured with a plurality of CORESETs, wherein each CORESET only corresponds to one CCE-to-REG mapping mode. For one CORESET, the corresponding CCE-to-REG mapping scheme may be interleaved (interleaved) or non-interleaved (non-interleaved). The CCE-to-REG mapping scheme is implemented by a REG bundle (REG bundle), which is briefly described below.

Specifically, the size of the REG bundle can be represented by L, and REG bundle i is defined as: REG { iL, iL +1, \8230;, iL + L-1}, i =0,1, \8230;, N _REG L-1, wherein N _REG ＝N _RB *N _symb The number of REGs included in one CORESET is indicated. CCE j comprises REG bundle of { f (6 j/L)) F (6 j/L + 1), \8230;, f (6 j/L + 6/L-1) }, where f (.) denotes an interleaver.

For a non-interleaved CCE-to-REG mapping scheme, L =6 and f (x) = x. For interleaved CCE-to-REG mapping scheme, N _symb When =1, L takes the value of 2 or 6; n is a radical of _symb When =2 or 3, L takes the value N _symb Or 6.

The interleaver f () may be defined as follows:

f(x)＝(pC+q+n _shift )mod(N _REG /L)

x＝qR+p

p＝0,1,…,R-1

q＝0,1,…,C-1

C＝N _REG /(LR)

wherein, R takes the value of 2 or 3 or 6; c is an integer.

The CCE-to-REG mapping mode corresponding to CORESET is configured by the network equipment through a high-level parameter (such as the cci-REG-MappingType).

For the interleaved CCE-to-REG mapping scheme, L is configured by the network device through higher layer parameters (e.g., REG-BundleSize); r is configured by a network device through a higher layer parameter (e.g., interlavisize); n is _shift Is configured by the network device through a high-level parameter (e.g. shiftIndex), or, if the high-level parameter is not configured, n may be taken _shift ＝N _{cell_ID} 。

For interleaved and non-interleaved CCE-to-REG mapping schemes, the UE may make the following assumptions:

if the higher layer parameter indicates that the precoding granularity is equal to one REG bundle size, for example, precoding granularity is equal to sameAsREG-bundle, the same precoding is used in one REG bundle;

if the higher layer parameter indicates that the precoding granularity is equal to all the consecutive RBs, for example, precoding granularity is equal to alloconteguous SRBs, all REGs in the consecutive RB set in the CORESET use the same precoding;

the UE may also assume that no RE in the CORESET overlaps with a Common Reference Signal (CRS) of the SSB or LTE, according to an indication of a higher layer parameter, such as LTE-CRS-ToMatchAround or additionalllte-CRS-tomatcharount.

One PDCCH may be mapped onto one or more CCEs, or one PDCCH includes one or more CCEs, where the number of CCEs is also referred to as Aggregation Level (AL), and the currently supported PDCCH aggregation levels are shown in table 2.

TABLE 2

Grade of polymerization	Number of CCEs
1	1
2	2
4	4
8	8
16	16

3. Transmission on control channel in high frequency

In high frequency systems, the length of one symbol is shorter due to the introduction of larger subcarrier spacing. For the terminal device, under the condition that the behavior of the terminal device for detecting the PDCCH candidates is the same, for example, the number of PDCCH candidates to be detected by the terminal device and the aggregation level corresponding to the PDCCH candidates are fixed, if the configured CORESET includes the same number of RBs and the same number of symbols, the larger the subcarrier interval is, the larger the frequency domain bandwidth corresponding to the CORESET that the terminal device needs to detect is. In this case, a great challenge is brought to the channel estimation capability of the terminal device. On the other hand, the shorter symbol may result in less transmission power of the terminal device, thereby causing the coverage performance of the PDCCH to be affected. It can be seen that CORESET enhancement at large subcarrier spacing is needed.

To this end, an embodiment of the present application provides a transmission method for a control channel, which is applied to a terminal device, and with reference to fig. 4, the method includes:

s101, determining a first control resource set CORESET, wherein the first control resource set corresponds to a first subcarrier interval and comprises N in a time domain _symb A symbol, N _symb Is a positive integer;

s102, detecting a first control channel candidate in the first control resource set, the first control channel comprising at least one control channel element CCE, wherein one CCE in the first control resource set comprises S resource element groups REG in the first control resource set, S is a positive integer, wherein,

The embodiments of the present application may be used for control channel transmission processing in various frequency ranges, and is particularly suitable for control channel transmission in a high frequency system, so that when detecting a control channel candidate, such as a PDCCH candidate (PDCCH candidate), a terminal device may detect more PDCCH candidates without increasing channel estimation capability, thereby improving the overall performance of the terminal.

Correspondingly, an embodiment of the present application further provides a transmission method of a control channel, which is applied to a network device, and with reference to fig. 5, the method includes:

s201, sending first configuration information to a terminal device, where the first configuration information is used to determine a first control resource set, the first control resource set corresponds to a first subcarrier interval, and the first control resource set includes N in a time domain _symb A symbol, N _symb Is a positive integer;

s202, a first control channel is transmitted in the first control resource set, the first control channel comprises at least one control channel element CCE, wherein one CCE in the first control resource set comprises S resource element groups REG in the first control resource set, S is a positive integer, wherein,

By using the embodiment of the application, the terminal equipment can detect more PDCCH candidates without increasing the channel estimation capability when detecting the control channel candidates such as the PDCCH candidates, and can also increase the coverage performance of the PDCCH to promote the system performance as a whole.

It should be understood that the present application may also be used in other scenarios of detecting control channel candidates in a control channel resource set, which is not limited in the present application. For example, the present application may be applied to communication between a terminal device and the terminal device, where the Control Channel resource set may be a resource set for the terminal device to detect a Physical Sidelink Control Channel (PSCCH) candidate.

According to an embodiment of the present application, optionally, one REG in the first control resource set includes N consecutive symbols in the first control resource set in a time domain, and includes M subcarriers corresponding to the N consecutive symbols in the first control resource set in a frequency domain, where the REG in the first control resource set is numbered from a first symbol and a subcarrier with a smaller number in an RB with a smallest number in the first control resource set, and is numbered from 0 in a time-first frequency-last manner.

According to an embodiment of the present application, optionally, one REG in the first set of control resources includes N consecutive symbols in the first set of control resources in the time domain and M subcarriers corresponding to the N symbols in the first set of control resources in the frequency domain, where M × N =12,m is greater than or equal to 1, and M is less than or equal to 12,m is a positive integer. For example, N =4,m =3. For another example, N =6,m =2. As another example, N =12,m =1.

According to an embodiment of the present application, optionally, one REG in the first set of control resources includes N consecutive symbols in the first set of control resources in the time domain and M subcarriers corresponding to the N consecutive symbols in the first set of control resources in the frequency domain, where N = N _symb 。

According to an embodiment of the present application, optionally, one REG in the first set of control resources includes N consecutive symbols in the first set of control resources in the time domain and M subcarriers corresponding to the N consecutive symbols in the first set of control resources in the frequency domain, wherein demodulation reference signals, DMRSs, are not included in the REGs in the first set of control resources.

According to an embodiment of the present application, optionally, one REG in the first set of control resources includes N consecutive symbols in the first set of control resources in the time domain and M subcarriers corresponding to the N consecutive symbols in the first set of control resources in the frequency domain, where the M subcarriers are consecutive M subcarriers, or the M subcarriers are consecutive M subcarriers without considering the DMRS.

According to an embodiment of the present application, optionally, S takes a value of 6.

According to an embodiment of the present application, optionally, the first subcarrier spacing is greater than or equal to 60kHz.

According to an embodiment of the present application, optionally, the first subcarrier spacing includes at least one of the following subcarrier spacings: 60kHz, 120kHz, 240kHz, 480kHz, 960kHz, 1.92MHz and 3.84MHz. For example, the first subcarrier spacing is 960kHz. As another example, the first subcarrier spacing is 480kHz.

According to an embodiment of the present application, optionally, if N _symb Greater than a first predetermined value or N _symb A corresponding maximum configuration value is greater than the first preset value, one REG in the first control resource set includes N consecutive symbols in the first control resource set in a time domain, and includes M subcarriers corresponding to the N consecutive symbols in the first control resource set in a frequency domain; or,

if N is present _symb Less than or equal to the first predetermined value, or N _symb And a corresponding maximum configuration value is less than or equal to the first preset value, one REG in the first control resource set comprises one symbol in the first control resource set in a time domain, and comprises one resource block RB corresponding to the symbol in the first control resource set in a frequency domain. For example, the first preset value may be 3 symbols. For another example, the first preset value may be 3 symbols.

Alternatively, REG is determined according to the maximum configurable symbol number of CORESET or configurable symbol number. The definition of its corresponding REG is different in different configuration cases. For example, in this embodiment, if the number of symbols for which the CORESET is configured is greater than a first preset value, the REG defined on a subcarrier basis is employed; or, if the symbol number configured by the CORESET is less than or equal to a first preset value, the REG defined based on the RB is adopted.

According to the embodiment of the present application, optionally, if the first subcarrier interval is greater than a second preset value, one REG in the first control resource set includes N consecutive symbols in the first control resource set in the time domain, and includes M subcarriers corresponding to the N consecutive symbols in the first control resource set in the frequency domain; or,

if the first subcarrier interval is less than or equal to the second preset value, one REG in the first control resource set includes one symbol in the first control resource set in a time domain, and includes one resource block RB corresponding to the symbol in the first control resource set in a frequency domain. For example, the second preset value may be 120kHz. For another example, the second preset value may be 240kHz.

Or, the REG is determined according to the subcarrier interval corresponding to CORESET. The definition of corresponding REGs is different for different subcarrier spacing configurations. For example, in this embodiment, if the subcarrier interval corresponding to CORESET is greater than the second preset value, the REG defined based on the subcarriers is adopted; or, if the subcarrier interval corresponding to the CORESET is less than or equal to a second preset value, the REG defined based on the RB is adopted.

According to an embodiment of the present application, optionally, the S REGs include S/L REG bundles (REG bundles), where one REG bundle includes L REGs, and the ith REG bundle includes REG numbers { iL, iL +1, \8230;, iL + L-1}, i =0,1, \8230;, N _REG /L-1，N _REG Indicating the number of REGs included in the first set of control resources, L and N _REG Are all positive integers.

According to an embodiment of the present application, optionally, one CCE in the first control resource set includes S resource element groups REG in the first control resource set, and a mapping relationship between the CCE and the S REGs includes:

the jth CCE includes REG bundle numbers of { f (jS/L), f (jS/L + 1), \8230 }, f (jS/L + S/L-1) }, where f (.) denotes an interleaver.

According to an embodiment of the present application, optionally, S, N _symb And L satisfies the followingAt least one relationship:

when N is _symb When the value is greater than or equal to 6, the value of L is 6;

· L＝S；

s is an integer multiple of L.

According to an embodiment of the present application, optionally, the interleaver f () includes:

f(x)＝(pC+q+n _shift )mod(N _REG /L)

x＝qR+p

p＝0,1,…,R-1

q＝0,1,…,C-1

C＝N _REG /(LR)

wherein n is _shift Is preset or configured by the network equipment; l is preset or network device configured; r is preset or network device configured.

E.g. N _symb =6,l =6. Also for example, N _symb ＝12，L＝6。

For example, S =6,l =6. For another example, S =4,l =4.

For example, S =6,l =2. For another example, S =6,l =3. For example, S =12,l =6.

According to an embodiment of the present application, optionally, L = S, the interleaver f (·) includes:

f(x)＝x。

according to an embodiment of the application, optionally, N _symb The corresponding maximum configuration value is greater than 3.

According to the embodiment of the present application, optionally, if the first subcarrier spacing is greater than or equal to a third preset value, N _symb The corresponding minimum configuration value is greater than 1. For example, the third preset value may be 480kHz.

According to an embodiment of the application, optionally, N _symb The corresponding minimum configuration value is determined according to the subcarrier interval corresponding to the CORESET. N corresponding to different subcarrier spacing configuration conditions _symb The corresponding minimum configuration values may be different. For example, if CORESETIf the corresponding subcarrier spacing is greater than or equal to a third preset value, N is _symb The corresponding minimum configuration value is greater than 1; or, if the subcarrier interval corresponding to the CORESET is smaller than a third preset value, N is _symb The corresponding minimum configuration value is equal to 1.

According to an embodiment of the application, optionally, N _symb The configuration range of (a) includes at least one of:

· {1、2、3、4、5、6、7、8、9、10、11、12}；

· {1、2、3、4、6、12}；

· {1、2、3、6、12}；

· {1、2、3、4、6}；

· {1、2、3、6}。

alternatively, N _symb The number of the above at least one arrangement range can be adopted.

According to an embodiment of the application, optionally, the method further comprises: determining a second set of control resources corresponding to a second subcarrier spacing, wherein,

the configuration range of the number of symbols included in the time domain by the second control resource set is different from the configuration range of the number of symbols included in the time domain by the first control resource set; or,

the maximum configuration value of the number of symbols included in the second control resource set in the time domain is different from the maximum configuration value of the number of symbols included in the first control resource set in the time domain.

For example, if CORESET corresponds to 120kHz subcarrier spacing, N _symb Is {1,2, 3}, if CORESET corresponds to a 480kHz subcarrier spacing, N _symb The configuration range of (1), (2), (3), (4), (6) and (12).

According to an embodiment of the present application, optionally, the determining the first set of control resources includes: and determining the first control resource set according to first configuration information sent by the network equipment. For example, the first configuration information includes at least one of: information Element (IE) CORESET, higher layer parameter duration, higher layer parameter frequency domain resources, etc.

According to an embodiment of the present application, optionally, the configuration range of the number of symbols corresponding to the first control resource set or the maximum configuration value of the number of symbols is associated with at least one of the following parameters:

the maximum number of PDCCH candidates detectable per serving cell and per slot corresponding to the first subcarrier spacing;

maximum number of PDCCH candidates detectable per serving cell and per time-frequency range combination (X, Y) corresponding to the first subcarrier spacing;

the maximum number of non-overlapping CCEs detectable per slot over a downlink bandwidth portion BWP over a serving cell corresponding to the first subcarrier spacing;

the largest number of non-overlapping CCEs detectable on each time-frequency range combination (X, Y) on one downlink bandwidth portion BWP on one serving cell corresponding to the first subcarrier spacing.

According to the embodiment of the present application, optionally, each time-frequency range combination may correspond to at least one of the following cases in the time domain: one or more first subcarrier spacing corresponding time slots, one subframe, 1 millisecond, one or more reference subcarrier spacing corresponding time slots. Optionally, the reference subcarrier spacing is less than or equal to the first subcarrier spacing. Optionally, the reference subcarrier spacing is a minimum subcarrier spacing supported in the FRX frequency domain range. Optionally, the reference subcarrier spacing is 60kHz. Optionally, the reference subcarrier spacing is preset or network device configured.

According to the embodiments of the present application, the method can be applied to the transmission of a control channel in an NR system (high frequency), wherein, for the CORESET configuration at a large subcarrier spacing, the number of symbols included in one CORESET may be greater than 3; further, the configurable symbol ranges or symbol numbers corresponding to CORESET corresponding to different subcarrier intervals may be different; for the interleaved CCE-to-REG mapping scheme, when N is _symb When the value is greater than or equal to 6, the value of L is 6; for REG, one REG may include M subcarriers corresponding to N symbols, where, mxn =12,m is a positive integer greater than or equal to 1 and less than or equal to 12.

The implementation manner of the embodiment of the present application is described above through multiple embodiments, and the specific implementation process of the embodiment of the present application is described below through multiple specific examples.

The embodiment of the present application may enhance the first CORESET corresponding to the first subcarrier spacing, wherein optionally, the first subcarrier spacing includes at least one of 60kHz, 120kHz, 240kHz, 480kHz, 960kHz, 1.92MHz, and 3.84 MHz; the number of symbols included in the first CORESET may be greater than 3. Specifically, in one case, the number of symbols included in the first CORESET increases, and thus, the CCE-to-REG mapping scheme needs to be redesigned. In another case, the first CORESET may be repeated in the time domain. Each of which is described in detail below.

The first condition is as follows: the number of symbols included in the first CORESET is increased

In the embodiment of the present application, optionally, configurable symbol ranges or maximum numbers of symbols corresponding to CORESET corresponding to different subcarrier intervals are different.

For example, if the first subcarrier spacing is 240kHz, the configurable symbol range for the first CORESET is {1,2,3,6}; alternatively, if the first subcarrier spacing is 480kHz, the configurable symbol range for the first CORESET is {1,2,3,6,12}.

In the embodiment of the present application, optionally, the configurable symbol ranges or the maximum number of symbols corresponding to CORESET corresponding to different subcarrier intervals are the same and include at least one number greater than 3. For example, CORESET corresponds to a configurable symbol range of {1,2,3,6,12}. As another example, CORESET corresponds to a configurable symbol range of { 1-14 }.

In an embodiment of the present application, optionally, the configurable symbol range or the maximum number of symbols corresponding to the first CORESET is associated with at least one of the following parameters:

the maximum number of PDCCH candidates detectable per serving cell and per time-frequency range combination (X, Y) corresponding to the first subcarrier spacing;

Optionally, each time-frequency range combination (X, Y) may correspond in time domain to at least one of: one or more first subcarrier spacing corresponding time slots, one subframe, 1 millisecond, one or more reference subcarrier spacing corresponding time slots.

Optionally, the reference subcarrier spacing may be at least one of:

the reference subcarrier spacing is less than or equal to the first subcarrier spacing.

The reference subcarrier spacing is the smallest subcarrier spacing supported in the FRX frequency domain.

The reference subcarrier spacing is 240kHz.

In some optional embodiments, for the interleaved CCE-to-REG mapping scheme, when N is _symb And when the value is greater than or equal to 6, the value of L is 6. E.g. N _symb If =6, L takes the value 6. Also for example, N _symb When =12, L takes the value 6; or, for the interleaved CCE-to-REG mapping mode, when N is equal to N _symb Greater than or equal to 6, the interleaver may be considered CCE based interleaving.

In some optional embodiments, for a non-interleaved CCE-to-REG mapping scheme, N _symb The value of (b) may be in any number of 1 to 14.

In the embodiment of the present application, optionally, the parameter configuration needs to satisfy that an integer number of REGs are included in one CORESET, and/or the parameter configuration needs to satisfy that an integer number of REG bundles are included in one CORESET, and/or the parameter configuration needs to satisfy that an integer number of CCEs are included in one CORESET.

Optionally, for the interleaved CCE-to-REG mapping scheme, N _symb The value range of (1) includes {1,2,3,6,12}.

Optionally, for interleaved and non-interleaved CCE-to-REG mapping schemes, N _symb The value range of (1) includes {1,2,3,6,12}.

Alternatively, the interleaver may be defined as:

f(x)＝(pC+q+n _shift )mod(N _REG /L)

x＝qR+p

p＝0,1,…,R-1

q＝0,1,…,C-1

C＝N _REG /(LR)

wherein, R takes the value of 2 or 3 or 6.C is an integer.

Optionally, one REG includes M subcarriers corresponding to N symbols, where M × N =12.M is a positive integer greater than or equal to 1 and less than or equal to 12. Optionally, N = N _symb 。

Optionally, for interleaved and non-interleaved CCE-to-REG mapping schemes, N _symb The value range of (A) includes {1,2,3,4,6,12}.

A plurality of specific examples pertaining to the first case will be described in detail below with reference to the accompanying drawings.

Example 1

In the present embodiment, referring to FIGS. 6A-6C, assume that a CORESET includes N in the frequency domain _RB =6 RBs, comprising N in the time domain _symb If L is 6, N is included in the CORESET _REG =36 REGs, wherein, in the CCE-to-REG mapping scheme configured as interleaving or CCE-to-REG mapping scheme configured as non-interleaving, according to the interleaver, the mapping scheme of the corresponding CCE-REGs may be as shown in fig. 6B and 6C, where fig. 6B is the non-interleaving CCE-to-REG mapping scheme and fig. 6C is the interleaving CCE-to-REG mapping scheme.

Example 2

In the present embodiment, referring to FIGS. 7A-7F, assume that a CORESET includes N in the frequency domain _RB =6 RBs, comprising N in the time domain _symb If L is 6, then N is included in the CORESET _REG =72 REGs, wherein the mapping of CCE-REGs corresponding to the CORESET may include at least one of the mapping manners as shown in fig. 7C, 7D, 7E, and 7F.

Example 3

In the present embodiment, referring to fig. 8A-8C, one REG includes M subcarriers corresponding to N symbols, where M × N =12.M is a positive integer greater than or equal to 1 and less than or equal to 12. Optionally, N = N _symb 。

Referring to FIG. 8B, assume that a CORESET includes N in the time domain in the frequency domain _symb =6 symbols, then 1 REG includes M =2 subcarriers corresponding to the 6 symbols.

Referring to FIG. 8C, assume that a CORESET includes N in the time domain in the frequency domain _symb =4 symbols, then 1 REG includes M =3 subcarriers corresponding to the 4 symbols.

Correspondingly, fig. 8A shows a schematic diagram of the location of REGs in the first 2 RBs in the existing CORESET, and N is shown in fig. 8B and 8C, respectively _symb =6 and N _symb Schematic of the location of REG in the first 2 RBs in the CORESET when =4. In the examples of fig. 8B and 8C, subcarriers numbered 1,5,9 in an RB may be used to place Demodulation Reference signals (DMRSs), wherein M subcarriers included in one REG are consecutive M subcarriers without considering the DMRSs.

Case 2: the first CORESET repeats in the time domain

In some embodiments of the present application, optionally, the first CORESET may perform frequency hopping transmission when repeated in the time domain.

In some embodiments of the present application, optionally, different copies of the first CORESET may correspond to different scrambling sequences when repeated in the time domain.

The specific arrangement and implementation of the embodiments of the present application are described above from different perspectives by way of a plurality of embodiments. Corresponding to the processing method of at least one of the above embodiments, the present embodiment further provides a terminal device 100, referring to fig. 9, including:

a determining module 110 configured to determine a first set of control resources, where the first set of control resources corresponds to a first subcarrier spacing, and the first set of control resources includes N in a time domain _symb A symbol, N _symb Is a positive integer;

a detecting module 120, configured to detect a first control channel candidate in the first control resource set, where the first control channel includes at least one control channel element CCE, where one CCE in the first control resource set includes S resource element groups REG in the first control resource set, and S is a positive integer; wherein,

Corresponding to the processing method of at least one embodiment described above, the embodiment of the present application further provides a network device 200, referring to fig. 10, which includes:

a first sending module 210, configured to send first configuration information to a terminal device, where the first configuration information is used to determine a first control resource set, the first control resource set corresponds to a first subcarrier interval, and the first control resource set includes N in a time domain _symb A symbol, N _symb Is a positive integer;

a second transmitting module 220, configured to transmit a first control channel in the first set of control resources, the first control channel comprising at least one control channel element CCE, wherein one CCE in the first set of control resources comprises S resource element groups REG in the first set of control resources, S being a positive integer, wherein,

The terminal device 100 and the network device 200 in the embodiment of the present application can implement the corresponding functions of the terminal device in the foregoing method embodiments, and the corresponding processes, functions, implementation manners, and beneficial effects of the modules (sub-modules, units, or components, etc.) in the terminal device 100 and the network device 200 may refer to the corresponding descriptions in the foregoing method embodiments, which are not described herein again.

It should be noted that, the functions described in each module (sub-module, unit, or component, etc.) in the terminal device 100 and the network device 200 in the embodiment of the present application may be implemented by different modules (sub-module, unit, or component, etc.), or may be implemented by the same module (sub-module, unit, or component, etc.), for example, the first sending module and the second sending module may be different modules, or may be the same module, and both can implement the corresponding functions of the terminal device in the embodiment of the present application.

Fig. 11 is a schematic block diagram of a communication device 600 according to an embodiment of the present application, where the communication device 600 includes a processor 610, and the processor 610 may call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, the communication device 600 may also include a memory 620. From the memory 620, the processor 610 may call and run a computer program to implement the method in the embodiment of the present application.

The memory 620 may be a separate device from the processor 610, or may be integrated into the processor 610.

Optionally, the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, and specifically, may transmit information or data to the other devices or receive information or data transmitted by the other devices.

The transceiver 630 may include a transmitter and a receiver, among others. The transceiver 630 may further include antennas, and the number of antennas may be one or more.

Optionally, the communication device 600 may be a network device according to this embodiment, and the communication device 600 may implement a corresponding process implemented by the network device in each method according to this embodiment, which is not described herein again for brevity.

Optionally, the communication device 600 may be a terminal device in the embodiment of the present application, and the communication device 600 may implement a corresponding process implemented by the terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Fig. 12 is a schematic block diagram of a chip 700 according to an embodiment of the present application, where the chip 700 includes a processor 710, and the processor 710 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, chip 700 may also include memory 720. From the memory 720, the processor 710 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 720 may be a separate device from the processor 710 or may be integrated into the processor 710.

Optionally, the chip 700 may further include an input interface 730. The processor 710 may control the input interface 730 to communicate with other devices or chips, and in particular, may obtain information or data transmitted by other devices or chips.

Optionally, the chip 700 may further include an output interface 740. The processor 710 may control the output interface 740 to communicate with other devices or chips, and in particular, may output information or data to the other devices or chips.

Optionally, the chip may be applied to the network device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the chip may be applied to the terminal device in the embodiment of fig. 9 in the present application, and the chip may implement the corresponding process implemented by the terminal device in each method in the embodiment of the present application, and for brevity, details are not repeated here.

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

The processors referred to above may be general purpose processors, digital Signal Processors (DSPs), field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), or other programmable logic devices, transistor logic devices, discrete hardware components, etc. The general purpose processor mentioned above may be a microprocessor or any conventional processor etc.

The above-mentioned memories may be volatile or nonvolatile memories or may include both volatile and nonvolatile memories. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash memory. The volatile memory may be a Random Access Memory (RAM).

It should be understood that the above memories are exemplary but not limiting illustrations, for example, the memories in the embodiments of the present application may also be Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM, ESDRAM), synchronous Link DRAM (SLDRAM), direct Rambus RAM (DR RAM), and the like. That is, the memory in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

Fig. 13 is a schematic block diagram of a communication system 800 according to an embodiment of the application, the communication system 800 comprising a terminal device 810 and a network device 820.

The terminal device 810 may be configured to implement the corresponding functions implemented by the terminal device in the methods of the embodiments of the present application, and the network device 820 may be configured to implement the corresponding functions implemented by the network device in the methods of the embodiments of the present application. For brevity, no further description is provided herein.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), among others.

It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application. It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

The above description is only for the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present application, and shall cover the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A transmission method of a control channel is applied to a terminal device, and the method comprises the following steps:

determining a first set of control resources, the first set of control resources corresponding to a first subcarrier spacing, the first set of control resources comprising N in the time domain _symb A symbol, N _symb Is a positive integer;

detecting a first control channel candidate in the first set of control resources, the first control channel comprising at least one control channel element, CCE, wherein one CCE in the first set of control resources comprises S resource element groups, REGs, in the first set of control resources, S being a positive integer, wherein,

one REG in the first control resource set comprises one symbol in the first control resource set in a time domain and one resource block RB corresponding to the symbol in the first control resource set in a frequency domain;

or,

one REG in the first control resource set includes N consecutive symbols in the first control resource set in a time domain, and includes M subcarriers corresponding to the N consecutive symbols in the first control resource set in a frequency domain, where N and M are positive integers.
The method of claim 1, wherein one REG in the first set of control resources comprises N consecutive symbols in the first set of control resources in the time domain and M subcarriers corresponding to the N consecutive symbols in the first set of control resources in the frequency domain, and wherein the REGs in the first set of control resources are numbered from a first symbol and a subcarrier with a smaller number in a RB with a smallest number in the first set of control resources and are numbered from 0 in a time-first frequency-second frequency manner.
The method according to claim 1 or 2, wherein one REG in the first set of control resources comprises N consecutive symbols in the first set of control resources in time domain and M subcarriers corresponding to the N symbols in the first set of control resources in frequency domain, wherein mxn =12, M is greater than or equal to 1, and M is less than or equal to 12, M being a positive integer.
The method of any of claims 1-3, wherein one REG in the first set of control resources comprises N consecutive symbols in the first set of control resources in time domain and the first set of control resources in frequency domainM subcarriers corresponding to the N consecutive symbols, where N = N _symb 。
The method of any one of claims 1 to 4, wherein one REG in the first set of control resources comprises N consecutive symbols in the first set of control resources in time domain and M subcarriers corresponding to the N consecutive symbols in the first set of control resources in frequency domain, wherein demodulation reference signals (DMRS) are not included in REGs in the first set of control resources.
The method of any one of claims 1 to 5, wherein one REG in the first set of control resources comprises N consecutive symbols in the first set of control resources in time domain and M subcarriers corresponding to the N consecutive symbols in the first set of control resources in frequency domain, wherein the M subcarriers are consecutive M subcarriers or the M subcarriers are consecutive M subcarriers without considering DMRS.
The method of any of claims 1-6, wherein the first subcarrier spacing is greater than or equal to 60kHz.
The method of claim 7, wherein the first subcarrier spacing comprises at least one of the following subcarrier spacings: 60kHz, 120kHz, 240kHz, 480kHz, 960kHz, 1.92MHz, 3.84MHz.
The method according to any one of claims 1 to 8, wherein if N is _symb Greater than a first predetermined value or N _symb The corresponding maximum configuration value is greater than the first preset value, one REG in the first control resource set includes N consecutive symbols in the first control resource set in the time domain, and includes the N consecutive symbols in the first control resource set in the frequency domainM subcarriers corresponding to the symbols; or,

if N is present _symb Less than or equal to the first predetermined value, or N _symb And a corresponding maximum configuration value is less than or equal to the first preset value, one REG in the first control resource set comprises one symbol in the first control resource set in a time domain, and one resource block RB corresponding to the symbol in the first control resource set in a frequency domain.
The method of any one of claims 1 to 8, wherein if the first subcarrier spacing is greater than a second preset value, one REG in the first set of control resources comprises N consecutive symbols in the first set of control resources in a time domain and M subcarriers corresponding to the N consecutive symbols in the first set of control resources in a frequency domain; or,

if the first subcarrier interval is smaller than or equal to the second preset value, one REG in the first control resource set comprises one symbol in the first control resource set in the time domain, and comprises one resource block RB corresponding to the symbol in the first control resource set in the frequency domain.
The method according to any of claims 1 to 10 wherein the S REGs comprise S/L REG bundles, wherein one REG bundle comprises L REGs, and the ith REG bundle comprises REG numbers { iL, iL +1, \ 8230;, iL + L-1}, i =0,1, \8230;, N _REG /L-1，N _REG Indicating the number of REGs included in the first set of control resources, L and N _REG Are all positive integers.
The method of claim 11, wherein one CCE in the first set of control resources comprises S Resource Element Groups (REGs) in the first set of control resources, and wherein the mapping relationship between the CCE and the S REGs comprises:

the jth CCE includes REG beams with the number { f (jS/L), f (jS/L + 1), \8230 }, f (jS/L + S/L-1) }, where f (.) denotes an interleaver.
The method of claim 12, wherein S, N _symb And L satisfies at least one of the following relationships:

when N is present _symb When the value is greater than or equal to 6, the value of L is 6;

L＝S。
the method according to claim 12 or 13, wherein the interleaver f (.) comprises:

f(x)＝(pC+q+n _shift )mod(N _REG /L)

x＝qR+p

p＝0,1,…,R-1

q＝0,1,…,C-1

C＝N _REG /(LR)

wherein n is _shift Is preset or network device configured;

l is preset or network device configured;

r is preset or network device configured.
The method of claim 12, wherein L = S, and wherein the interleaver f (·) comprises:

f(x)＝x。
the method of any one of claims 1 to 15, wherein N is _symb The corresponding maximum configuration value is greater than 3.
The method according to any of claims 1 to 16, wherein N is greater than or equal to a third predetermined value if the first subcarrier spacing is greater than or equal to the third predetermined value _symb The corresponding minimum configuration value is greater than 1.
The method of any one of claims 1 to 16Method characterized in that N _symb The configuration range of (a) includes at least one of:

{1、2、3、4、5、6、7、8、9、10、11、12}；

{1、2、3、4、6、12}；

{1、2、3、6、12}；

{1、2、3、4、6}；

{1、2、3、6}。
the method according to any one of claims 1 to 18, further comprising:

determining a second set of control resources corresponding to a second subcarrier spacing, wherein,

the configuration range of the number of symbols included in the second control resource set in the time domain is different from the configuration range of the number of symbols included in the first control resource set in the time domain; or,

the maximum configuration value of the number of symbols included in the second control resource set in the time domain is different from the maximum configuration value of the number of symbols included in the first control resource set in the time domain.
The method according to any of claims 1 to 19, wherein the determining a first set of control resources comprises:

and determining the first control resource set according to first configuration information sent by the network equipment.
A transmission method of a control channel, applied to a network device, the method comprising:

sending first configuration information to a terminal device, where the first configuration information is used to determine a first control resource set, the first control resource set corresponds to a first subcarrier interval, and the first control resource set includes N in a time domain _symb A symbol, N _symb Is a positive integer;

transmitting a first control channel in the first set of control resources, the first control channel comprising at least one control channel element, CCE, wherein one CCE in the first set of control resources comprises S resource element groups, REGs, in the first set of control resources, S being a positive integer, wherein,

one REG in the first control resource set comprises one symbol in the first control resource set in a time domain and one resource block RB corresponding to the symbol in the first control resource set in a frequency domain;

or,

one REG in the first control resource set includes N consecutive symbols in the first control resource set in a time domain, and includes M subcarriers corresponding to the N consecutive symbols in the first control resource set in a frequency domain, where N and M are positive integers.
The method of claim 21, wherein one REG in the first set of control resources comprises N consecutive symbols in the first set of control resources in the time domain and M subcarriers corresponding to the N consecutive symbols in the first set of control resources in the frequency domain, wherein the REGs in the first set of control resources are numbered starting from a first symbol and a subcarrier with a smaller number in a RB with a smallest number in the first set of control resources and starting from 0 in a time-first and frequency-last manner.
The method of claim 21 or 22, wherein one REG in the first set of control resources comprises N consecutive symbols in the first set of control resources in time domain and M subcarriers corresponding to the N symbols in the first set of control resources in frequency domain, wherein mxn =12, M is greater than or equal to 1, and M is less than or equal to 12, M is a positive integer.
The method of any of claims 21 to 23, wherein one REG in the first set of control resources comprises the REG in time domainN continuous symbols in a first control resource set comprise M subcarriers corresponding to the N continuous symbols in the first control resource set on a frequency domain, wherein N = N _symb 。
The method of any one of claims 21 to 24, wherein one REG in the first set of control resources comprises N consecutive symbols in the first set of control resources in time domain and M subcarriers corresponding to the N consecutive symbols in the first set of control resources in frequency domain, wherein demodulation reference signals, DMRSs, are not included in REGs in the first set of control resources.
The method of any one of claims 21 to 25, wherein one REG in the first set of control resources comprises N consecutive symbols in the first set of control resources in the time domain and M subcarriers corresponding to the N consecutive symbols in the first set of control resources in the frequency domain, wherein the M subcarriers are consecutive M subcarriers or the M subcarriers are consecutive M subcarriers without considering DMRS.
The method of any of claims 21-26, wherein the first subcarrier spacing is greater than or equal to 60kHz.
The method of claim 27, wherein the first subcarrier spacing comprises at least one of the following subcarrier spacings: 60kHz, 120kHz, 240kHz, 480kHz, 960kHz, 1.92MHz, 3.84MHz.
The method according to any one of claims 21 to 28, wherein if N is _symb Greater than a first predetermined value or N _symb The corresponding maximum configuration value is larger than the first preset value, and one REG in the first control resource set comprises the first control resource on the time domainN continuous symbols in a resource set comprise M subcarriers corresponding to the N continuous symbols in the first control resource set on a frequency domain; or,

if N is present _symb Less than or equal to the first predetermined value, or N _symb And a corresponding maximum configuration value is less than or equal to the first preset value, one REG in the first control resource set comprises one symbol in the first control resource set in a time domain, and comprises one resource block RB corresponding to the symbol in the first control resource set in a frequency domain.
The method of any of claims 21 to 28, wherein if the first subcarrier spacing is greater than a second preset value, one REG in the first set of control resources comprises N consecutive symbols in the first set of control resources in a time domain and M subcarriers corresponding to the N consecutive symbols in the first set of control resources in a frequency domain; or,

if the first subcarrier interval is less than or equal to the second preset value, one REG in the first control resource set includes one symbol in the first control resource set in a time domain, and includes one resource block RB corresponding to the symbol in the first control resource set in a frequency domain.
The method according to any of claims 21 to 30 wherein the S REGs comprise S/L REG bundles, wherein one REG bundle comprises L REGs, and the ith REG bundle comprises REG numbers { iL, iL +1, \ 8230;, iL + L-1}, i =0,1, \8230;, N _REG /L-1，N _REG Indicating the number of REGs included in the first set of control resources, L and N _REG Are all positive integers.
The method of claim 31, wherein one CCE in the first set of control resources comprises S Resource Element Groups (REGs) in the first set of control resources, and wherein the mapping relationship between the CCE and the S REGs comprises:

the jth CCE includes REG bundle numbers of { f (jS/L), f (jS/L + 1), \8230 }, f (jS/L + S/L-1) }, where f (.) denotes an interleaver.
The method of claim 32, wherein S, N _symb And L satisfies at least one of the following relationships:

when N is present _symb When the value is greater than or equal to 6, the value of L is 6;

L＝S。
the method of claim 32 or 33, wherein the interleaver f (.) comprises:

f(x)＝(pC+q+n _shift )mod(N _REG /L)

x＝qR+p

p＝0,1,…,R-1

q＝0,1,…,C-1

C＝N _REG /(LR)

wherein n is _shift Is preset or network device configured;

l is preset or network device configured;

r is preset or network device configured.
The method of claim 32, wherein L = S, and wherein the interleaver f (·) comprises:

f(x)＝x。
the method of any one of claims 21 to 35, wherein N is _symb The corresponding maximum configuration value is greater than 3.
The method according to any of claims 21-36, wherein N is greater than or equal to a third predetermined value if the first subcarrier spacing is greater than or equal to the third predetermined value _symb The corresponding minimum configuration value is greater than 1.
The method of any one of claims 21 to 36, wherein N is _symb Includes at least one of:

{1、2、3、4、5、6、7、8、9、10、11、12}；

{1、2、3、4、6、12}；

{1、2、3、6、12}；

{1、2、3、4、6}；

{1、2、3、6}。
the method of any one of claims 21 to 38, further comprising:

transmitting second configuration information to the terminal device, the second configuration information being used to determine a second set of control resources, the second set of control resources corresponding to a second subcarrier spacing, wherein,

the configuration range of the number of symbols included in the time domain by the second control resource set is different from the configuration range of the number of symbols included in the time domain by the first control resource set; or,

the maximum configuration value of the number of symbols included in the second control resource set in the time domain is different from the maximum configuration value of the number of symbols included in the first control resource set in the time domain.
A terminal device, characterized in that it comprises:

a determining module configured to determine a first set of control resources, the first set of control resources corresponding to a first subcarrier spacing, the first set of control resources including N in a time domain _symb A symbol, N _symb Is a positive integer;

a detecting module, configured to detect a first control channel candidate in the first control resource set, where the first control channel includes at least one control channel element CCE, where one CCE in the first control resource set includes S resource element groups REG in the first control resource set, and S is a positive integer; wherein,

one REG in the first control resource set comprises one symbol in the first control resource set in a time domain and one resource block RB corresponding to the symbol in the first control resource set in a frequency domain;

or,

one REG in the first control resource set includes N consecutive symbols in the first control resource set in a time domain, and includes M subcarriers corresponding to the N consecutive symbols in the first control resource set in a frequency domain, where N and M are positive integers.
The terminal device of claim 40, wherein one REG in the first set of control resources comprises N consecutive symbols in the first set of control resources in the time domain and M subcarriers corresponding to the N consecutive symbols in the first set of control resources in the frequency domain, and wherein the REGs in the first set of control resources are numbered starting from the first symbol and the subcarrier with the smaller number in the RB with the smallest number in the first set of control resources and starting from 0 in a time-first frequency-last manner.
The terminal device of claim 40 or 41, wherein a REG in the first set of control resources comprises N consecutive symbols in the first set of control resources in the time domain and M subcarriers corresponding to the N consecutive symbols in the first set of control resources in the frequency domain, wherein M x N =12, M is greater than or equal to 1, and M is less than or equal to 12, M is a positive integer.
The terminal device of any one of claims 40 to 42, wherein one REG in the first set of control resources comprises N consecutive symbols in the first set of control resources in the time domain and M subcarriers corresponding to the N consecutive symbols in the first set of control resources in the frequency domain, where N = N _symb 。
The terminal device of any one of claims 40 to 43, wherein one REG in the first set of control resources comprises N consecutive symbols in the first set of control resources in time domain and M subcarriers corresponding to the N consecutive symbols in the first set of control resources in frequency domain, wherein demodulation reference signals (DMRS) are not included in REGs in the first set of control resources.
The terminal device of any one of claims 40 to 44, wherein one REG in the first set of control resources comprises N consecutive symbols in the first set of control resources in time domain and M subcarriers corresponding to the N consecutive symbols in the first set of control resources in frequency domain, wherein the M subcarriers are consecutive M subcarriers or the M subcarriers are consecutive M subcarriers without considering DMRS.
A terminal device according to any of claims 40 to 45, wherein the first subcarrier spacing is greater than or equal to 60kHz.
The terminal device of claim 46, wherein the first subcarrier spacing comprises at least one of the following subcarrier spacings: 60kHz, 120kHz, 240kHz, 480kHz, 960kHz, 1.92MHz and 3.84MHz.
A terminal device according to any one of claims 40 to 47, wherein if N is greater than N _symb Greater than a first predetermined value or N _symb A corresponding maximum configuration value is greater than the first preset value, one REG in the first control resource set includes N consecutive symbols in the first control resource set in a time domain, and includes M subcarriers corresponding to the N consecutive symbols in the first control resource set in a frequency domain(ii) a Or,

if N is present _symb Less than or equal to the first predetermined value, or N _symb And a corresponding maximum configuration value is less than or equal to the first preset value, one REG in the first control resource set comprises one symbol in the first control resource set in a time domain, and comprises one resource block RB corresponding to the symbol in the first control resource set in a frequency domain.
The terminal device of any one of claims 40 to 47, wherein if the first subcarrier spacing is greater than a second preset value, one REG in the first control resource set comprises N consecutive symbols in the first control resource set in a time domain and M subcarriers corresponding to the N consecutive symbols in the first control resource set in a frequency domain; or,

if the first subcarrier interval is less than or equal to the second preset value, one REG in the first control resource set includes one symbol in the first control resource set in a time domain, and includes one resource block RB corresponding to the symbol in the first control resource set in a frequency domain.
The terminal device of any of claims 40 to 49, wherein S/L REG bundles are included in the S REGs, wherein L REGs are included in one REG bundle, and wherein the ith REG bundle includes REG numbers { iL, iL +1, \ 8230;, iL + L-1}, i =0,1, \8230;, N REG bundle _REG /L-1，N _REG Indicating the number of REGs included in the first set of control resources, L and N _REG Are all positive integers.
The terminal device of claim 50, wherein one CCE in the first set of control resources comprises S Resource Element Groups (REGs) in the first set of control resources, and wherein a mapping relationship between the CCE and the S REGs comprises:

the jth CCE includes REG beams with the number { f (jS/L), f (jS/L + 1), \8230 }, f (jS/L + S/L-1) }, where f (.) denotes an interleaver.
The terminal device of claim 51, wherein S, N _symb And L satisfies at least one of the following relationships:

when N is present _symb When the value is greater than or equal to 6, the value of L is 6;

L＝S。
the terminal device of claim 51 or 52, wherein the interleaver f (.) comprises:

f(x)＝(pC+q+n _shift )mod(N _REG /L)

x＝qR+p

p＝0,1,…,R-1

q＝0,1,…,C-1

C＝N _REG /(LR)

wherein n is _shift Is preset or configured by the network equipment;

l is preset or network device configured;

r is preset or network device configured.
The terminal device of claim 51, wherein L = S, and wherein the interleaver f (·) comprises:

f(x)＝x。
a terminal device according to any one of claims 40 to 54, characterised in that N is _symb The corresponding maximum configuration value is greater than 3.
The terminal device of any of claims 40-55, wherein N is greater than or equal to a third preset value if the first subcarrier spacing is greater than or equal to the third preset value _symb The corresponding minimum configuration value is greater than 1.
According to claim40 to 55, characterized in that N is _symb The configuration range of (a) includes at least one of:

{1、2、3、4、5、6、7、8、9、10、11、12}；

{1、2、3、4、6、12}；

{1、2、3、6、12}；

{1、2、3、4、6}；

{1、2、3、6}。
the terminal device according to any of claims 40 to 57, wherein the terminal device further comprises:

determining a second set of control resources corresponding to a second subcarrier spacing, wherein,

the configuration range of the number of symbols included in the time domain by the second control resource set is different from the configuration range of the number of symbols included in the time domain by the first control resource set; or,

the maximum configuration value of the number of symbols included in the second control resource set in the time domain is different from the maximum configuration value of the number of symbols included in the first control resource set in the time domain.
The terminal device according to any of claims 10-58, wherein said determining a first set of control resources comprises:

and determining the first control resource set according to first configuration information sent by the network equipment.
A network device, comprising:

a first sending module, configured to send first configuration information to a terminal device, where the first configuration information is used to determine a first control resource set, the first control resource set corresponds to a first subcarrier interval, and the first control resource set includes N in a time domain _symb A symbol, N _symb Is a positive integer;

a second transmitting module for transmitting a first control channel candidate in the first set of control resources, the first control channel comprising at least one control channel element, CCE, wherein one CCE in the first set of control resources comprises S resource element groups, REGs, in the first set of control resources, S being a positive integer, wherein,

one REG in the first control resource set comprises one symbol in the first control resource set in a time domain and one resource block RB corresponding to the symbol in the first control resource set in a frequency domain; or,

one REG in the first control resource set includes N consecutive symbols in the first control resource set in a time domain, and includes M subcarriers corresponding to the N consecutive symbols in the first control resource set in a frequency domain, where N and M are positive integers.
The network device of claim 60, wherein one REG in the first set of control resources comprises N consecutive symbols in the first set of control resources in the time domain and M subcarriers corresponding to the N consecutive symbols in the first set of control resources in the frequency domain, wherein the REGs in the first set of control resources are numbered starting from the first symbol and the subcarrier with the smaller number in the RB with the smallest number in the first set of control resources and starting from 0 in a time-first and frequency-last manner.
The network device of claim 60 or 61, wherein one REG in the first set of control resources comprises N consecutive symbols in the first set of control resources in time domain and M subcarriers corresponding to the N symbols in the first set of control resources in frequency domain, wherein MxN =12, M is greater than or equal to 1, and M is less than or equal to 12, wherein M is a positive integer.
The network device of any of claims 60-62, wherein the first control resource is a first control resourceOne REG in the source set comprises N consecutive symbols in the first control resource set in the time domain and M subcarriers corresponding to the N consecutive symbols in the first control resource set in the frequency domain, where N = N _symb 。
The network device of any one of claims 60 to 63, wherein one REG in the first set of control resources comprises N consecutive symbols in the first set of control resources in the time domain and M subcarriers corresponding to the N consecutive symbols in the first set of control resources in the frequency domain, wherein demodulation reference signals (DMRS) are not included in REGs in the first set of control resources.
The network device of any one of claims 60 to 64, wherein one REG in the first set of control resources comprises N consecutive symbols in the first set of control resources in the time domain and M subcarriers corresponding to the N consecutive symbols in the first set of control resources in the frequency domain, wherein the M subcarriers are consecutive M subcarriers or the M subcarriers are consecutive M subcarriers without considering DMRS.
The network device of any of claims 60-65, wherein the first subcarrier spacing is greater than or equal to 60kHz.
The network device of claim 66, wherein the first subcarrier spacing comprises at least one of the following subcarrier spacings: 60kHz, 120kHz, 240kHz, 480kHz, 960kHz, 1.92MHz and 3.84MHz.
A network device as claimed in any one of claims 60 to 67, wherein if N is equal to _symb Greater than a first predetermined value or N _symb The corresponding maximum configuration value is greater than the first preset valueOne REG in the first control resource set comprises N consecutive symbols in the first control resource set in a time domain and M subcarriers corresponding to the N consecutive symbols in the first control resource set in a frequency domain; or,

if N is present _symb Less than or equal to the first predetermined value, or N _symb And a corresponding maximum configuration value is less than or equal to the first preset value, one REG in the first control resource set comprises one symbol in the first control resource set in a time domain, and comprises one resource block RB corresponding to the symbol in the first control resource set in a frequency domain.
The network device of any one of claims 60 to 67, wherein if the first subcarrier spacing is greater than a second preset value, one REG in the first set of control resources comprises N consecutive symbols in the first set of control resources in the time domain and M subcarriers corresponding to the N consecutive symbols in the first set of control resources in the frequency domain; or,

if the first subcarrier interval is less than or equal to the second preset value, one REG in the first control resource set includes one symbol in the first control resource set in a time domain, and includes one resource block RB corresponding to the symbol in the first control resource set in a frequency domain.
The network device of any of claims 60 to 69, wherein the S REGs comprise S/L REG bundles, one of which comprises L REGs, and the ith REG bundle comprises REG numbers { iL, iL +1, \ 8230;, iL + L-1}, i =0,1, \8230;, N _REG /L-1，N _REG Indicating the number of REGs included in the first set of control resources, L and N _REG Are all positive integers.
The network device of claim 70, wherein one CCE in the first set of control resources comprises S Resource Element Groups (REGs) in the first set of control resources, and wherein a mapping relationship of the CCE to the S REGs comprises:

the jth CCE includes REG beams with the number { f (jS/L), f (jS/L + 1), \8230 }, f (jS/L + S/L-1) }, where f (.) denotes an interleaver.
The network device of claim 71, wherein S, N _symb And L satisfies at least one of the following relationships:

when N is present _symb When the value is greater than or equal to 6, the value of L is 6;

L＝S。
the network device of claim 71 or 72, wherein the interleaver f (.) comprises:

f(x)＝(pC+q+n _shift )mod(N _REG /L)

x＝qR+p

p＝0,1,…,R-1

q＝0,1,…,C-1

C＝N _REG /(LR)

wherein n is _shift Is preset or network device configured;

l is preset or network device configured;

r is preset or network device configured.
The network device of claim 73, wherein L = S, and wherein the interleaver f (·) comprises:

f(x)＝x。
network device of any of claims 60 to 74, wherein N is the number of network devices in the network device _symb The corresponding maximum configuration value is greater than 3.
Network device of any of claims 60 to 75, wherein if said first sub-set is providedThe carrier spacing is greater than or equal to a third preset value, N _symb The corresponding minimum configuration value is greater than 1.
Network device of any of claims 60 to 75, wherein N is _symb The configuration range of (a) includes at least one of:

{1、2、3、4、5、6、7、8、9、10、11、12}；

{1、2、3、4、6、12}；

{1、2、3、6、12}；

{1、2、3、4、6}；

{1、2、3、6}。
the network device of any one of claims 60 to 77, wherein the network device further comprises:

transmitting second configuration information to the terminal device, the second configuration information being used to determine a second set of control resources, the second set of control resources corresponding to a second subcarrier spacing, wherein,

the configuration range of the number of symbols included in the time domain by the second control resource set is different from the configuration range of the number of symbols included in the time domain by the first control resource set; or,

the maximum configuration value of the number of symbols included in the second control resource set in the time domain is different from the maximum configuration value of the number of symbols included in the first control resource set in the time domain.
A terminal device, comprising: a processor and a memory for storing a computer program, the processor calling and running the computer program stored in the memory, performing the method of any of claims 1 to 20.
A network device, comprising: a processor and a memory for storing a computer program, the processor calling and running the computer program stored in the memory, performing the method of any of claims 21 to 39.
A chip, comprising:

a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 1 to 39.
A computer-readable storage medium storing a computer program, wherein,

the computer program causes a computer to perform the method of any one of claims 1 to 39.
A computer program product comprising computer program instructions, wherein,

the computer program instructions cause a computer to perform the method of any one of claims 1 to 39.
A computer program for causing a computer to perform the method of any one of claims 1 to 39.