Control information transmission method and communication device

Abstract

An embodiment of the present application provides a control information transmission method, which includes: determining a frequency-domain location of a physical sidelink control channel (PSCCH) corresponding to a sidelink reference signal resource according to an index of the sidelink reference signal resource, and transmitting the PSCCH at the frequency-domain location.

Description

[Technical Field]

[0001] [Technical field] The present application relates to the field of communications, and more particularly to a control information transmission method and a communication device. [Background technology]

[0002] Currently, transmission between terminal devices is performed via sidelink (S Currently, sidelink communication resources are scheduled on a subchannel basis, and the physical sidelink control channel (PSC) is used for the transmission. (P Frequency domain start (or lowest) resource block of the SCCH (R B) The index of the physical sidelink shared channel (P SSCH) index.

[0003] In a positioning scenario, in order to improve positioning performance, mutual resource multiplexing (for example, time division multiplexing, frequency division multiplexing, or comb division multiplexing) should be considered between different terminal devices to occupy the system bandwidth as completely as possible. If the index of the frequency domain lowest RB of the PSCCH is still the same as that of the PSSCH, when multiple terminal devices transmit positioning reference signals in the same slot, the control information carried on the PSCCH of different terminal devices will conflict with each other. Therefore, the control information carried on the PSCCH of different terminal devices Conflict between How to avoid this is an urgent issue to be resolved. Summary of the Invention

[0004] The embodiments of the present application provide a control information transmission method for reducing the probability of conflict between control information carried on the PSCCH of different terminal devices.

[0005] According to a first aspect, a control information transmission method is provided. The method may be performed by a first terminal device, or may be performed by a component (e.g., a chip or a circuit) of the first terminal device. This is not limited in the present application. For ease of explanation, an example in which the method is performed by the first terminal is used hereinafter for explanation.

[0006] The control information transmission method includes: a first terminal device determines a starting position of a frequency domain resource occupied by a control channel based on a quantity of reference signal resources to be configured, the control channel is for carrying control information, and the configured reference signal resources include a plurality of reference signal resources; and the first terminal device transmits the control information on the control channel based on the starting position of the frequency domain resources.

[0007] The first terminal device is capable of transmitting control information on a control channel to a second terminal device based on a starting position of the frequency domain resource. In the present application, the second terminal device is a roadside unit or another device capable of implementing a function of receiving and demodulating the control information transmitted by the first terminal device in a SL scenario.

[0008] According to a second aspect, a control information transmission method is provided. The method may be performed by a second terminal device, or may be performed by a component (e.g., a chip or a circuit) of the second terminal device. This is not limited in the present application. For ease of explanation, an example in which the method is performed by the second terminal is used hereinafter for explanation.

[0009] The control information transmission method includes: a second terminal device determines a starting position of a frequency domain resource occupied by a control channel based on a quantity of reference signal resources to be configured, the control channel is for carrying control information, and the configured reference signal resources include a plurality of reference signal resources; and the second terminal device receives the control information on the control channel based on the starting position of the frequency domain resources.

[0010] For example, a terminal device (a first terminal device or a second terminal device) determining the starting position of a frequency domain resource occupied by a control channel based on the number of reference signal resources to be set may be understood as follows: the terminal device determines the starting position of a frequency domain resource occupied by a control channel, and the starting position of the frequency domain resource occupied by the control channel is related to the number of reference signal resources to be set.

[0011] The number of configured reference signal resources may be pre-configured or may be configured, and the configured reference signal resources may be configured in one or more slots.

[0012] Specifically, the plurality of reference signal resources are for transmitting a plurality of reference signals, respectively, and the reference signals have a one-to-one correspondence with the reference signal resources. For example, a first terminal device occupies one of the plurality of reference signal resources for transmitting a first reference signal, and the first reference signal is a reference signal among the plurality of reference signals to be transmitted by the first terminal device.

[0013] Based on the above technical solution, the first terminal device can determine the starting position of the frequency domain resource occupied by the control channel (e.g., PSCCH) based on the number of configured reference signal resources. In other words, the starting position of the frequency domain resource occupied by the control channel does not need to refer to the configuration scheme for multiplexing the PSSCH and the PSCCH (e.g., the starting position of the PSCCH must be the same as that of the PSSCH), and various determination schemes exist. Regarding the positioning reference signal and control information, the starting position of the PSCCH can be determined by the sidelink positioning reference signal. (S This allows the starting position of the PSCCH resource to be inconsistent with the starting position of the L-PRS, improving the flexibility of PSCCH resource allocation and reducing contention and collisions between terminals, thereby improving the probability of using positioning.

[0014] In some implementations of the first or second aspect, the starting position of one of multiple sub-bands of the bandwidth of the resource pool in which the configured reference signal resource is located is used as the starting position of the frequency domain resource, the quantity of the multiple sub-bands is related to the quantity of the configured reference signal resources, and the starting position of the sub-band includes any one of: a starting resource block index, a starting sub-channel index, a starting frequency index, or a starting sub-carrier index.

[0015] For example, in some implementations of the first or second aspect, a terminal device (a first terminal device or a second terminal device) determines a starting position of a frequency domain resource occupied by a control channel based on a quantity of configured reference signal resources, in which: the terminal device divides a bandwidth of a resource pool in which the configured reference signal resources are located into a plurality of sub-bands based on the quantity of configured reference signal resources, the quantity of the plurality of sub-bands is related to the quantity of configured reference signal resources, the starting position of one of the plurality of sub-bands is a starting position of the first frequency domain resource, the resource pool is a resource pool including the configured reference signal resources, and the starting position of the sub-band includes any one of: a starting resource block index, a starting sub-channel index, a starting frequency index, or a starting sub-carrier index.

[0016] The quantity of the plurality of subbands being related to the quantity of the configured reference signal resources may be equal to the quantity of the configured reference signal resources.

[0017] Furthermore, when the bandwidth of the resource pool in which the reference signal resources to be configured are arranged is an integer multiple of the quantity of the reference signal resources to be configured, the terminal device dividing the bandwidth of the resource pool in which the reference signal resources to be configured are arranged into a plurality of sub-bands based on the quantity of the reference signal resources to be configured includes: the terminal device equally dividing the bandwidth of the resource pool in which the reference signal resources to be configured are arranged into a plurality of sub-bands based on the quantity of the reference signal resources to be configured.

[0018] Based on the above technical solution, a terminal device may use the starting position of one of multiple sub-bands of the bandwidth of the resource pool in which the configured reference signal resource is located as the starting position of the frequency domain resource. The probability that different terminal devices use the same starting position of the sub-band as the starting position of the frequency domain resource of the control channel corresponding to the terminal device is low. That is, it is possible to reduce interference caused by different terminal devices transmitting control information on the control channel.

[0019] In some implementations of the first aspect or the second aspect, the bandwidths of the multiple sub-bands are the same.

[0020] In some implementations of the first aspect or the second aspect, the number of configured reference signal resources, the start positions of the frequency domain resources, and the indexes of the frequency domain resources satisfy the following relationship:

[0021]

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[0022]

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[0023] In some implementations of the first aspect or the second aspect, the number of configured reference signal resources, the start positions of the frequency domain resources, and the indexes of the frequency domain resources satisfy the following relationship:

[0024]

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[0025]

number

[0026] In some implementations of the first aspect or the second aspect, the number of configured reference signal resources, the start positions of the frequency domain resources, and the indexes of the frequency domain resources satisfy the following relationship:

[0027]

number

[0028]

number

[0029] In the present application, the location of the frequency domain resource of the PSCCH may be determined based on the PRS corresponding to the frequency domain resource of the PSCCH.

[0030] The above k prs is k sl-prs and in this application, f k is the offset value, and f k The value of f can be an integer. For example, k is an integer greater than or equal to -1. For example, f k is -1 or 1. In the present application, N RB Total may further indicate a total bandwidth occupied by the sub-bands, where the total bandwidth indicates the bandwidth from the lowest frequency of the sub-band having the lowest frequency to the highest frequency of the sub-band having the highest frequency.

[0031] In some implementations of the first aspect, the step of determining a starting position of a frequency domain resource occupied by a control channel based on a quantity of configured reference signal resources includes: and determining a starting position of a frequency-domain resource occupied by the control channel based on a quantity of configured reference signal resources and a first index, where the first index is an index of a reference signal resource used by the first terminal device to transmit the reference signal; in other words, the first terminal device transmits the reference signal on the first reference signal resource corresponding to the first index; in other words, the first index is an index of the first reference signal resource, the first reference signal resource is for transmitting the reference signal, and the first reference signal resource is one of the configured reference signal resources. In some implementations of the first aspect, transmitting control information on the control channel based on the starting position of the frequency-domain resource by the first terminal device includes: transmitting the control information on the control channel based on the starting position of the sub-band corresponding to the first index by the first terminal device.

[0032] In some implementations of the second aspect, the step of determining a starting position of a frequency domain resource occupied by a control channel based on a quantity of configured reference signal resources includes: The method includes determining a starting position of a frequency domain resource occupied by the control channel based on the number of reference signal resources to be configured and a first index, where the first index is an index of a reference signal resource used by the second terminal device to receive the reference signal; in other words, the second terminal device receives the reference signal on the reference signal resource corresponding to the first index; in other words, the first index is an index of the first reference signal resource, the first reference signal resource is for receiving the reference signal, and the first reference signal resource is one of the configured reference signal resources.

[0033] In some implementations of the second aspect, the second terminal device receiving control information on a control channel based on a starting position of the frequency domain resource includes: The second terminal device receives control information on a control channel based on a starting position of the sub-band corresponding to the first index.

[0034] Specifically, the first index is one of a plurality of indexes respectively corresponding to a plurality of reference signal resources.

[0035] Based on the above technical solution, a terminal device determines the start position of a frequency-domain resource of a control channel based on the reference signal resource occupied by the terminal device, and different terminal devices occupy different reference signal resources. Therefore, the start positions of the frequency-domain resource of the control channel determined by different terminal devices are different, and the bandwidths of the control channels determined by different terminal devices are not larger than the bandwidth of the sub-band; in other words, the bandwidths of the control channels determined by different terminal devices are not larger than the interval between the two start positions. This can avoid conflicts caused by different terminal devices transmitting control information on the control channel.

[0036] In some implementations of the first or second aspect, an index for each of the plurality of reference signal resources is determined based on identifiers of the plurality of reference signal resources, and an index for each of the plurality of sub-bands is determined based on a frequency-domain position corresponding to each of the plurality of sub-bands.

[0037] For example, in some implementations of the first aspect or the second aspect, a terminal device (a first terminal device or a second terminal device) determines an index for each of a plurality of reference signal resources based on identifiers of the plurality of reference signal resources, and determines an index for each of a plurality of sub-bands based on a frequency domain position corresponding to each of the plurality of sub-bands.

[0038] The reference signal resource identifier is for identifying a reference signal resource. The multiple reference signal resource identifiers may be multiple different numbers of identifiers. The reference signal resource index may be understood as recoding the multiple reference signal resources.

[0039] In some implementations of the first aspect or the second aspect, when the minimum value of the index is 0, the number of configured reference signal resources, the start positions of the frequency domain resources, and the indexes of the frequency domain resources satisfy the following relationship:

[0040]

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[0041]

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[0042]

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[0043] In some implementations of the first or second aspect, the multiple reference signal resources are arranged in one slot; or the multiple reference signal resources are arranged in multiple slots, and at least one of the multiple slots includes multiple frequency domain resources corresponding to multiple control channels, respectively.

[0044] Based on the above technical solution, control channels in multiple slots are jointly designed, thereby effectively reducing the resource overhead of the control channels. For example, if control channels in two slots are jointly designed, each control channel occupies three symbols. In this case, the overhead is 3 / 14. When the two slots are jointly coded, the PSCCH overhead is reduced to 3 / 28, which is half the overhead. This improves the utilization rate of reference signal resources and the capacity of the reference signal or terminal device.

[0045] In some implementations of the first or second aspect, the plurality of reference signal resources are for transmitting a plurality of reference signals, respectively, and the multiplexing of the resources is performed in the following multiplexing manner: Frequency division multiplexing, time division multiplexing, or comb division multiplexing is performed with respect to a plurality of reference signals in at least one of

[0046] According to a third aspect, a control information transmission method is provided. The method may be performed by a first terminal device, or may be performed by a component (e.g., a chip or a circuit) of the first terminal device. This is not limited in the present application. For ease of explanation, an example in which the method is performed by the first terminal will be used below for explanation.

[0047] A control information transmission method includes: a first terminal device receives configuration information from a network device, the configuration information being for configuring reference signal resources; the terminal device determines a starting position of a frequency domain resource occupied by a control channel based on the configuration information, the control channel being for carrying the control information; and the first terminal device transmits the control information on the control channel based on the starting position of the frequency domain resource.

[0048] Based on the aforementioned technical solution, the first terminal device can determine the starting position of the frequency domain resource occupied by the control channel based on the configuration information of the reference signal resource. Since the reference signal resources of different terminal devices usually have different configuration information, different terminal devices correspond to different starting positions of the frequency domain resource, thereby reducing the probability of conflict caused by different terminal devices transmitting control information on the control channel.

[0049] In some implementations of the third aspect, the method further includes dividing the bandwidth of the resource pool into a plurality of sub-bands based on the comb tooth size.

[0050] In some implementations of the third aspect, the configuration information includes a comb size and a frequency domain offset value corresponding to the reference signal resource.

[0051] In some implementations of the third aspect, a starting position of a first subband among a plurality of subbands of a bandwidth of a resource pool in which the reference signal resource is located is used as a starting position of the frequency-domain resource, the number of the plurality of subbands is related to a comb size, and the ranking of the first subband among the plurality of subbands is related to a frequency-domain offset value, the starting position of the subband including any one of a starting resource block index, a starting subchannel index, a starting frequency index, or a starting subcarrier index. The frequency-domain offset value may be understood as a resource element offset (RE offset) or a resource block offset (RB offset).

[0052] For example, in some implementations of the third aspect, a first terminal determines a ranking of a first sub-band corresponding to a frequency-domain resource among a plurality of sub-bands based on a frequency-domain offset value, where the starting position of the first sub-band is a starting position of the frequency-domain resource, and the starting position of the first sub-band includes any one of: a starting resource block index, a starting sub-channel index, a starting frequency index, or a starting subcarrier index. When the bandwidth of a resource pool in which reference signal resources are arranged is an integer multiple of the comb tooth size, dividing the bandwidth of the resource pool in which reference signal resources are arranged into a plurality of sub-bands based on the comb tooth size by the terminal device includes: the terminal device evenly dividing the bandwidth of the resource pool in which reference signal resources are arranged into a plurality of sub-bands based on the comb tooth size.

[0053] According to the above technical solution, the first terminal device determines the start position of the frequency domain resource occupied by the control channel based on the comb tooth size and the frequency domain offset value of the reference signal resource. Different terminal devices usually occupy different comb teeth, i.e., have different frequency domain offsets, so that different terminal devices correspond to different start positions of the frequency domain resource, thereby reducing the probability of conflict caused by different terminal devices transmitting control information on the control channel.

[0054] In some implementations of the third aspect, the bandwidths of the multiple sub-bands are the same.

[0055] In some implementations of the third aspect, the comb tooth size: Frequency Domain The offset value and the starting position of the frequency domain resource satisfy the following relationship:

[0056]

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[0057]

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[0058] According to a fourth aspect, there is provided a communications device, the communications device including a communications interface and a processor. The communications interface is configured to transmit and receive data and / or signaling. The processor is configured to execute computer programs or instructions to enable the communications device to perform a method according to the first aspect and any one of possible implementations thereof, to enable the communications device to perform a method according to the second aspect and any one of possible implementations thereof, or to enable the communications device to perform a method according to the third aspect and any one of possible implementations thereof.

[0059] In some implementations of the fourth aspect, the communications device further includes a memory, the memory configured to store computer programs or instructions.

[0060] According to a fifth aspect, there is provided a communication device configured to perform the method of the first aspect. The communication device may be a first terminal device, or may be a device (e.g., a chip, a chip system, or a circuit) within the first terminal device, or may be a device capable of being used with the first terminal device.

[0061] In a possible implementation, the communication device may include modules or units that correspond one-to-one to the methods / operations / steps / actions described in the first aspect. The modules or units may be hardware circuits, software, or may be implemented by hardware circuits in combination with software.

[0062] The communication device includes: a processing unit configured to determine a starting position of a frequency domain resource to be occupied by a control channel based on a quantity of reference signal resources to be configured, the control channel being for carrying control information, and the reference signal resources to be configured including a plurality of reference signal resources; and a transceiver unit configured to transmit the control information on the control channel based on the starting position of the frequency domain resources.

[0063] It should be understood that the aforementioned transceiver unit may include a transmitting unit and a receiving unit. The transmitting unit is configured to perform a transmitting operation of the communication device, and the receiving unit is configured to perform a receiving operation of the communication device. For ease of explanation, in this embodiment of the present application, the transmitting unit and the receiving unit are integrated into one transceiver unit. This has been described throughout the present application, and the details will not be described again below.

[0064] According to a sixth aspect, there is provided a communication device, which can be configured to perform the method of the second aspect. The communication device can be a second terminal device, or a device (e.g., a chip, a chip system, or a circuit) within the second terminal device, or a device that can be used with the second terminal device.

[0065] In a possible implementation, the communication device may include modules or units that correspond one-to-one to the methods / operations / steps / actions described in the second aspect. The modules or units may be hardware circuits, software, or may be implemented by hardware circuits in combination with software.

[0066] The communication device includes: a processing unit configured to determine a starting position of a frequency domain resource to be occupied by a control channel based on a quantity of reference signal resources to be configured, the control channel being for carrying control information, and the reference signal resources to be configured including a plurality of reference signal resources; and a transceiver unit configured to receive the control information on the control channel based on the starting position of the frequency domain resources.

[0067] It should be understood that the aforementioned transceiver unit may include a transmitting unit and a receiving unit. The transmitting unit is configured to perform a transmitting operation of the communication device, and the receiving unit is configured to perform a receiving operation of the communication device. For ease of explanation, in this embodiment of the present application, the transmitting unit and the receiving unit are integrated into one transceiver unit. This has been described throughout the present application, and the details will not be described again below.

[0068] In some implementations of the fifth or sixth aspect, the starting position of one of multiple sub-bands of the bandwidth of the resource pool in which the reference signal resources are located is used as the starting position of the frequency domain resource, the quantity of the multiple sub-bands is related to the quantity of the configured reference signal resources, and the starting position of the sub-band includes any one of: a starting resource block index, a starting sub-channel index, a starting frequency index, or a starting sub-carrier index.

[0069] For example, in some implementations of the fifth or sixth aspect, the processing unit is configured to divide, based on a quantity of the configured reference signal resources, a bandwidth of a resource pool in which the reference signal resources are located into a plurality of sub-bands, where the quantity of the plurality of sub-bands is related to the quantity of the configured reference signal resources, the starting position of one of the plurality of sub-bands is a starting position of a first frequency domain resource, the resource pool is a resource pool including the configured reference signal resources, and the starting position of the sub-band includes any one of: a starting resource block index, a starting sub-channel index, a starting frequency index, or a starting sub-carrier index.

[0070] For example, in some implementations of the fifth or sixth aspect, the bandwidths of the multiple sub-bands are the same.

[0071] In some implementations of the fifth or sixth aspect, the number of configured reference signal resources, the start positions of the frequency domain resources, and the indexes of the frequency domain resources satisfy the following relationship:

[0072]

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[0073]

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[0074] In some implementations of the fifth or sixth aspect, the number of configured reference signal resources, the start positions of the frequency domain resources, and the indexes of the frequency domain resources satisfy the following relationship:

[0075]

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[0076]

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[0077] In some implementations of the fifth or sixth aspect, the number of configured reference signal resources, the start positions of the frequency domain resources, and the indexes of the frequency domain resources satisfy the following relationship:

[0078]

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[0079]

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[0080] In some implementations of the fifth aspect, the processing unit determining a start position of a frequency domain resource occupied by a control channel based on a quantity of reference signal resources to be configured includes: the processing unit determining a start position of a frequency domain resource occupied by a control channel based on a quantity of reference signal resources to be configured and a first index, Sending the first index is an index of a reference signal resource used by the transceiver unit to receive the reference signal; in other words, the transceiver unit is further configured to transmit a reference signal on a reference signal resource corresponding to the first index; in other words, the first index is an index of a first reference signal resource, the first reference signal resource is for transmitting the reference signal, and the first reference signal resource is one of the configured reference signal resources.

[0081] In some implementations of the fifth aspect, the transceiver unit transmitting control information on a control channel based on a starting position of a frequency domain resource includes: the transceiver unit transmitting the control information on the control channel based on a starting position of a sub-band corresponding to the first index.

[0082] In some implementations of the sixth aspect, the processing unit determining a starting position of a frequency domain resource occupied by a control channel based on a number of reference signal resources to be configured includes: the processing unit determining a starting position of a frequency domain resource occupied by a control channel based on a number of reference signal resources to be configured and a first index, where the first index is an index of a reference signal resource used by the transceiver unit to receive a reference signal; in other words, the transceiver unit is configured to receive a reference signal on a reference signal resource corresponding to the first index; in other words, the first index is an index of a first reference signal resource, where the first reference signal resource is for receiving a reference signal, and the first reference signal resource is one of the configured reference signal resources.

[0083] In some implementations of the sixth aspect, the transceiver unit transmitting control information on a control channel based on a starting position of a frequency domain resource includes: the transceiver unit receiving control information on a control channel based on a starting position of a sub-band corresponding to the first index.

[0084] In some implementations of the fifth or sixth aspect, an index for each of the plurality of reference signal resources is determined based on identifiers of the plurality of reference signal resources, and an index for each of the plurality of sub-bands is determined based on a frequency domain position corresponding to each of the plurality of sub-bands.

[0085] For example, in some implementations of the fifth or sixth aspect, the processing unit is further configured to: determine an index for each of the plurality of reference signal resources based on identifiers of the plurality of reference signal resources; and determine an index for each of the plurality of sub-bands based on a frequency domain position corresponding to each of the plurality of sub-bands.

[0086] In some implementations of the fifth or sixth aspect, when the minimum value of the index is 0, the number of configured reference signal resources, the start positions of the frequency domain resources, and the indexes of the frequency domain resources satisfy the following relationship:

[0087]

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[0088]

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[0089]

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[0090] In some implementations of the fifth or sixth aspects, the multiple reference signal resources are arranged in one slot; or the multiple reference signal resources are arranged in multiple slots, and at least one of the multiple slots includes multiple frequency domain resources corresponding to multiple control channels, respectively.

[0091] In some implementations of the fifth or sixth aspect, the plurality of reference signal resources are for transmitting a plurality of reference signals, respectively, and the multiplexing of the resources is performed in the following multiplexing manner: Frequency division multiplexing, time division multiplexing, or comb division multiplexing is performed with respect to a plurality of reference signals in at least one of

[0092] For the technical effects of the method shown in the fifth aspect and possible designs of the fifth aspect, please refer to the technical effects of the first aspect and possible designs of the first aspect.

[0093] For the technical effects of the method shown in the sixth aspect and possible designs of the sixth aspect, please refer to the technical effects of the second aspect and possible designs of the second aspect.

[0094] According to a seventh aspect, there is provided a communication device, which can be configured to perform the method of the third aspect. The communication device can be a first terminal device, or a device (e.g., a chip, a chip system, or a circuit) within the first terminal device, or a device that can be used with the first terminal device.

[0095] In a possible implementation, the communication device may include modules or units that correspond one-to-one to the methods / operations / steps / actions described in the third aspect. The modules or units may be hardware circuits, software, or may be implemented by hardware circuits in combination with software.

[0096] The communication device includes: a transceiver unit configured to receive configuration information from a network device, the configuration information being for configuring reference signal resources; and a processing unit configured to determine, based on the configuration information, a starting position of a frequency domain resource occupied by a control channel, the control channel being for carrying control information, the control information indicating information related to the reference signal.

[0097] It should be understood that the aforementioned transceiver unit may include a transmitting unit and a receiving unit. The transmitting unit is configured to perform a transmitting operation of the communication device, and the receiving unit is configured to perform a receiving operation of the communication device. For ease of explanation, in this embodiment of the present application, the transmitting unit and the receiving unit are integrated into one transceiver unit. This has been described throughout the present application, and the details will not be described again below.

[0098] In some implementations of the seventh aspect, the transceiver unit is further configured to transmit control information on a control channel based on a starting position of the frequency domain resource.

[0099] In some implementations of the seventh aspect, the configuration information includes a comb size and a frequency domain offset value corresponding to the reference signal resource.

[0100] In some implementations of the seventh aspect, the method further includes: dividing the bandwidth of the resource pool into a plurality of sub-bands based on the comb tooth size.

[0101] In some implementations of the seventh aspect, a starting position of a first subband among multiple subbands of a bandwidth of a resource pool in which the configured reference signal resource is located is used as a starting position of the frequency-domain resource, the number of the multiple subbands is related to a comb size, and the ranking of the first subband among the multiple subbands is related to a frequency-domain offset value, and the starting position of the subband includes any one of a starting resource block index, a starting subchannel index, a starting frequency index, or a starting subcarrier index. The frequency-domain offset value may be understood as an RE offset or an RB offset.

[0102] For example, in some implementations of the seventh aspect, the processing unit is further configured to determine a ranking of a first sub-band corresponding to a frequency domain resource among the plurality of sub-bands based on the frequency domain offset value, where the starting position of the first sub-band is a starting position of the frequency domain resource, and the starting position of the first sub-band includes any one of: a starting resource block index, a starting sub-channel index, a starting frequency index, or a starting subcarrier index.

[0103] When the bandwidth of the resource pool in which the reference signal resources are arranged is an integer multiple of the comb tooth size, the processing unit divides the bandwidth of the resource pool in which the reference signal resources are arranged into a plurality of sub-bands based on the comb tooth size, including: the processing unit equally divides the bandwidth of the resource pool in which the reference signal resources are arranged into a plurality of sub-bands based on the comb tooth size.

[0104] In some implementations of the seventh aspect, the bandwidths of the multiple sub-bands are the same.

[0105] In some implementations of the seventh aspect, the comb tooth size: Frequency Domain The offset value and the starting position of the frequency domain resource satisfy the following relationship:

[0106]

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[0107]

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[0108] For the technical effects of the method shown in the seventh aspect and possible designs of the seventh aspect, please refer to the technical effects of the third aspect and possible designs of the third aspect.

[0109] According to a ninth aspect, there is provided a communication system. The communication system includes a first terminal device and a second terminal device. The first terminal device is configured to perform a method according to the first aspect and any one of possible implementations of the first aspect. The second terminal device is configured to perform a method according to the second aspect and any one of possible implementations of the second aspect.

[0110] According to a ninth aspect, there is provided a communication system including a first terminal device and a network device, wherein the first terminal device is configured to perform a method according to the third aspect and any one of possible implementations of the third aspect.

[0111] According to a tenth aspect, there is provided a computer-readable storage medium, the computer-readable storage medium including a computer program or instructions, which, when executed on a computer, perform a method according to the first aspect and any one of possible implementations of the first aspect, a method according to the second aspect and any one of possible implementations of the second aspect, or a method according to the third aspect and any one of possible implementations of the third aspect.

[0112] According to an eleventh aspect, there is provided a computer program product, the computer program product comprising instructions that, when executed on a computer, perform a method according to the first aspect and any one of possible implementations of the first aspect, a method according to the second aspect and any one of possible implementations of the second aspect, or a method according to the third aspect and any one of possible implementations of the third aspect.

[0113] According to a twelfth aspect, there is provided a communication device. The communication device includes a logic circuit and an input / output interface. The input / output interface is configured to output and / or input a signal. The logic circuit is configured to perform a method according to any one of the first aspect and possible implementations thereof, a method according to any one of the second aspect and possible implementations thereof, or a method according to any one of the third aspect and possible implementations thereof. [Brief explanation of the drawings]

[0114] [Figure 1] FIG. 1 is a diagram of a communication scenario to which the technical solution of the present application is applicable. [Figure 2] Figure 2 is a diagram of multiple resource pools. [Figure 3] Figure 3 shows the transmission structure of PSCCH and PSSCH in New Radio (NR). [Figure 4] FIG. 4 shows that the frequency domain starting RB for PSCCH and PSSCH is the same. [Figure 5] FIG. 5 is a diagram of frequency division multiplexing of different users according to the present application. [Figure 6] FIG. 6 shows PSCCH collisions for different users. [Figure 7] 7(a) to (c) are diagrams of SL positioning scenarios according to the present application. [Figure 8] FIG. 8 is a schematic flowchart of a control information transmission method according to an embodiment of the present application. [Figure 9] FIG. 9 shows a configuration in which multiple SL-PRS resources are in one slot. [Figure 10] 10(a) and (b) are diagrams of frequency domain starting positions of different PSCCHs according to an embodiment of the present application. [Figure 11] FIG. 11 shows that different SL-PRS resources correspond to different candidate resource locations for the PSCCH. [Figure 12]FIG. 12 shows a configuration in which multiple SL-PRS resources are within multiple slots. [Figure 13] FIG. 13 shows the multiplexing scheme of different SL-PRS resources. [Figure 14] FIG. 14 is a schematic flowchart of another control information transmission method according to an embodiment of the present application. [Figure 15] FIG. 15 is a block diagram of a communication device 10 according to an embodiment of the present application. [Figure 16] FIG. 16 is a diagram of another communication device 20 according to an embodiment of the present application. [Figure 17] FIG. 17 is a diagram of a chip system 30 according to an embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0115] The technical solutions of the present application will be described below with reference to the accompanying drawings.

[0116] The technical solutions in the embodiments of the present application are applicable to various communication systems, such as 5G (5 G) system or NR system, Wireless Fidelity (W i-Fi System, 3rd Generation Partnership Project (3 The present invention is applicable to, but not limited to, cellular systems related to GPRS (GPR), communication systems supporting the convergence of multiple wireless technologies, and future-oriented evolutionary systems.

[0117] With the development of communication technology, mobile communication systems not only support traditional communication, but also support device-to-device communication. (D 2D) communication, machine-to-machine (M 2M) communication, machine type communication (M TC), and Vehicle-to-Everything (V 2X) communication (also known as Internet of Vehicles communication), e.g., vehicle-to-vehicle (V 2V) Faith, Vehicle-to-Infrastructure (V2I) Faith, Vehicle-to-Pedestrian (V 2P) Faith, and vehicle-to-network (V 2N) Nobu Support.

[0118] FIG. 1 is a diagram of the architecture of a communication system to which embodiments of the present application are applicable.

[0119] The communication system to which this embodiment of the present application is applicable mainly includes a terminal device, for example, the terminal device 121 and the terminal device 122 shown in FIG. 1, and a network device, for example, the network device 110 shown in FIG. 1. Furthermore, the communication system mainly includes two communication interfaces, for example, a communication interface (Uu interface) between the terminal device 121 and the network device 110, and a communication interface (proximity-based service communication interface) between the terminal device 121 and the terminal device 122. (P The Uu interface is for communication between terminal devices and network devices, and the PC5 interface is for sidelink communication between terminal devices. The link used by a terminal device to send data to a network device on the Uu interface is called an uplink, and the link used by a terminal device to receive data sent by a network device is called a downlink. The link for data transmission between terminal devices on the PC5 interface is called a sidelink or direct link. Sidelinks are generally used for communication between devices, e.g., device-to-device. (D Vehicle-to-everything (Vehicle-to-Everything) is used in scenarios where direct communication is possible. In this scenario, data transmission between devices does not need to be performed via a network device. (V D2X) communication may be considered as one case of D2D communication.

[0120] Data and radio resource control on the Uu interface (R RC) signaling is transmitted between the terminal device and the network device via a radio bearer. A radio bearer used for data transmission is called a data radio bearer. (D The bearer used for RRC signaling transmission is called the Signaling Radio Bearer (RB). (S Radio bearers are called packet data convergence protocols. (P DCP) Entity and Radio Link Control (R An RLC bearer includes an RLC entity and a corresponding logical channel. (L The radio bearer configuration includes the PDCP entity, the RLC entity, and the logical channel of the radio bearer. The radio bearer configuration also includes the quality of service of the service transmitted over the radio bearer. (Q For the Uu interface, a radio bearer is established by the network device for the terminal device.

[0121] For the PC5 interface, one or more of data and RRC signaling are alternatively transmitted between terminal devices via radio bearers. The radio bearers in the PC5 interface are sidelink radio bearers. (S It is sometimes called Long Term Evolution (LRB). (L In a TE)V2X system, radio bearers on the PC5 interface are established by the transmitting terminal device and the receiving terminal device, respectively, and the configuration of the radio bearers is either predefined in the standard or determined by the transmitting terminal device and the receiving terminal device.

[0122] In future communications, the names of interfaces such as Uu interface or PC5 interface may remain unchanged or may be replaced by other names, which is not limited in this application.

[0123] The terminal device in the embodiments of the present application may be briefly referred to as a terminal. The terminal device may be a device having a wireless transceiver function. The terminal device may be mobile or fixed. The terminal device may be deployed on land, including indoor or outdoor, handheld, or vehicle-mounted, on water (e.g., on a ship), or in the air (e.g., on an aircraft, balloon, or satellite). The terminal device may be a mobile phone, a tablet computer, a computer having a wireless transceiver function, a virtual reality (V R) Terminal devices, augmented reality (A The terminal device may include a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and / or a wireless terminal device in a smart home. Alternatively, the terminal device may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) based (S IP) Telephony, Wireless Local Loop (W LL) Station, Personal Digital Assistant (P DA), handheld devices or computing devices with wireless communication capabilities, in-vehicle devices, wearable devices, 5th generation (5 G) Terminal devices in a network or more advanced public land mobile network (PThe terminal device may be a user device (UE) or a terminal device in a local mobile network (LMN). (U E). Optionally, a terminal device may communicate with multiple access network devices by using different technologies. For example, a terminal device may communicate with an access network device that supports LTE, or may communicate with an access network device that supports 5G, or may be dual-connected to an access network device that supports LTE and an access network device that supports 5G. This is not a limitation in the present application.

[0124] In the present application, an apparatus configured to perform the functions of a terminal device may be a terminal device, or may be an apparatus capable of supporting a terminal device in performing functions, such as a chip system, a hardware circuit, a software module, or a combination of a hardware circuit and a software module. The apparatus may be installed in a terminal device or used together with a terminal device. In the technical solution provided in the present application, an example in which an apparatus configured to perform the functions of a terminal device is a terminal device, and the terminal device is a UE, is used to explain the technical solution provided in the present application.

[0125] In this application, a chip system may include a chip, or may include a chip and other discrete components.

[0126] The network device in this embodiment of the present application is an access network (R It may also be called an AN device.

[0127] A RAN device is a node or device that connects a terminal device to a wireless network, and is sometimes called a base station. Examples of RAN devices include base stations and next-generation Node Bs in 5G.(g NB), Evolved Node B (e NB), Wireless Network Controller (R NC), Node B (N B), Base Station Controller (B SC), base transceiver station (B TS), home base stations (e.g. 、H NB), baseband unit (B BU), sending and receiving points (T The access network devices may include, but are not limited to, a central unit (RP), a transmission point (TP), and / or a mobile switching center. (C U), distributed unit (D U), the central unit control plane (C U-CP) node, Central Unit User Plane (C U-UP) Node, Integrated Access and Backhaul (I AB) Node, Cloud Radio Access Network (C Alternatively, the access network device may be at least one of a relay station, an access point, an in-vehicle device, a terminal device, a wearable device, an access network device in a 5G network, a future evolved public land mobile network, (P The device may be an access network device in a LAN (Local Mobile Network), or similar.

[0128] In the present application, an apparatus configured to implement the functions of an access network device may be an access network device, or may be an apparatus capable of supporting an access network device in implementing the functions, such as a chip system, a hardware circuit, a software module, or a combination of a hardware circuit and a software module. The apparatus may be attached to or used together with an access network device. In the technical solution provided in the present application, an example in which an apparatus configured to implement the functions of an access network device is an access network device, and the access network device is a base station, is used to explain the technical solution provided in the present application.

[0129] The architecture shown in Figure 1 to which the embodiments of the present application are applicable is merely an example for explanation, and the architecture to which the embodiments of the present application are applicable is not limited thereto. Any architecture capable of realizing the functions of the above-mentioned device is applicable to the embodiments of the present application.

[0130] It should be further understood that the above names are defined merely to distinguish different functions and do not constitute any limitations on the present application. The present application does not exclude the possibility that other names may be used in 5G networks and other future networks. For example, in a 6G network, all or some of the above devices may use 5G terminology, or other names or similar names. The names of the interfaces between the devices in FIG. 1 are merely examples. In a specific implementation, the names of the interfaces may be other names. This is not particularly limited in the present application. Furthermore, the names of messages (or signaling) transmitted between the above devices are merely examples and do not constitute any limitations on the functions of the messages.

[0131] To facilitate understanding of the embodiments of the present application, the basic concepts of the present application will be first described below.

[0132] 1. Resource pool: A terminal device can perform data transmission by using resources in the sidelink resource pool. One resource pool consists of one or more contiguous physical resource blocks. (P RB) (Resource Block (R B) may be configured in the frequency domain, and one or more slots may be configured in the time domain. The slots may be contiguous or non-contiguous.

[0133] To facilitate understanding of the meaning of resource pool, the sidelink resource pool will be explained below by using an example in conjunction with Figure 2. Figure 2 is a diagram of multiple resource pools. The portion of the spectrum used for SL from the carrier bandwidth is called the sidelink bandwidth portion. (S L BWP ) Multiple resource pools, such as the three resource pools shown in FIG. 2 (resource pool #1, resource pool #2, and resource pool #3), may be defined in the SL BWP. One of the resource pools is used as an example for explanation. Multiple consecutive PRBs may be configured for one resource pool in the frequency domain, and a specific number of consecutive PRBs may form one sub-channel. A terminal device may perform SL data transmission by using one or more sub-channels. In other words, the smallest unit granularity for transmitting or receiving SL data by a terminal device may be called a sub-channel, and the number of PRBs in one sub-channel may be 10, 12, 15, 20, 25, 50, 75, or 100.

[0134] 2. Resource: A resource is a time-frequency resource within a resource pool. Time-domain resources may be represented by symbols, slots, mini-slots, partial slots, sub-frames, radio frames, sensing slots, or the like. Frequency-domain resources may be represented by resource elements (REs), resource blocks (RBs), or similar. (R B), sub-channel, resource pool, bandwidth, bandwidth portion (B It may be referred to as a WP, carrier, channel, interlace, or the like.

[0135] For ease of explanation, in this specification, an example in which the time domain resource is a slot and the frequency domain resource is an RB or a sub-channel is used to describe resources for PSCCH transmission.

[0136] 3. PSCCH and PSSCH: According to the Rel-16 / Rel-17 NR protocol, the scheduling granularity of the PSCCH and / or the scheduling granularity of the PSSCH is in units of one slot in the time domain and one or more consecutive sub-channels in the frequency domain.

[0137] The UE may transmit sidelink information on resources, one resource being the PSCCH, the PSSCH, and a signal, e.g., a demodulation reference signal (DRS). (D MRS) and channel state information reference signal (C The PSCCH can carry first stage sidelink control information (SI-RS). (S The PSSCH carries the first stage SCI and / or data.

[0138] (1) PSCCH transmission structure: The PSCCH carries the first stage SCI. In the time domain, the PSCCH is divided into two or three orthogonal frequency division multiplexed (OFDM) channels starting from the second sidelink symbol. (O In the frequency domain, the physical resource block carrying the PSCCH occupies 100 FDM (Frequency Division Multiplexing) symbols. (P RBs) start from the lowest PRB of the lowest sub-channel of the associated PSSCH, and the number of PRBs occupied by the PSCCH is within the sub-band range of one PSSCH. The PSCCH has {10, 12, 15, 20, 25} resource blocks. (R B). The specific value is preset or set by the network device, which is not limited in this application.

[0139] (2) Transmission structure of PSSCH: PSSCH carries the second-stage SCI and data. In the time domain, a minimum of 2 symbols and a maximum of 12 symbols are used to carry PSSCH. In the frequency domain, PSSCH is subCh The information transmitted on the second symbol in a slot occupies consecutive subchannels. (A GC) into the first OFDM symbol.

[0140] Also, the UE may receive and transmit the PSSCH in two consecutive slots, respectively, so an additional symbol (GAP symbol) may need to be added after the PSSCH for the UE's transmit / receive conversion.

[0141] Figure 3 shows the transmission structure of the PSCCH and PSSCH in NR. The PSCCH and PSSCH can be carried in one slot and three subchannels, where one slot contains 14 symbols.

[0142] It can also be seen from FIG. 4 that the index of the frequency domain starting RB (or lowest RB) of the PSCCH is the same as that of the PSSCH.

[0143] If different users occupy different sub-channels, the PSCCHs of different users will not collide with each other. Figure 5 is a diagram of frequency division multiplexing of different users according to the present application.

[0144] It can be seen from FIG. 5 that UE#1 occupies sub-channels #6 and #5, and UE#2 occupies sub-channels #2 and #1.

[0145] 4. PSCCH contention among different users: In some special scenarios (e.g., positioning scenarios), different users need to multiplex resources in a time-frequency orthogonal or comb-like manner to fully occupy the system bandwidth, such as the resource pool bandwidth or BWP bandwidth.

[0146] In this case, if the design concept of PSCCH and PSSCH is used as a reference, for example, if the index of the lowest RB of PSCCH is the same as that of SL-PRS, when multiple users transmit SL-PRS in one slot, the PSCCHs of different users will conflict with each other, resulting in the inability to correctly demodulate SCI, the inability to correctly receive SL-PRS reference signals, and the inability of other users to sense resource reservation information.

[0147] For ease of understanding, PSCCH contention between different users will be briefly explained with reference to FIG.

[0148] It can be seen from Figure 6 that UE#1 and UE#2 transmit SL-PRS (e.g., SL-PRS#1 and SL-PRS#2 shown in Figure 6) in a time-frequency multiplexed manner, and that PSCCHs (e.g., PSCCH#1 and PSCCH#2 shown in Figure 6) between UE#1 and UE#2 collide with each other.

[0149] The embodiments of the present application relate to SL positioning scenarios. For example, there are three different architectures for sidelink positioning. For ease of understanding, the description will be made with reference to Fig. 7. (a) to (c) of Fig. 7 are diagrams of SL positioning scenarios according to the present application.

[0150] Figure 7(a) shows two user devices performing mutual positioning, e.g. ranging or angle measurement, by transmitting sidelink positioning reference signals in a scenario where network coverage is not taken into account.

[0151] Figure 7(b) shows a sidelink user connected to multiple roadside units. (R The UE indicates that it is performing sidelink positioning by receiving a sidelink positioning reference signal transmitted by the UE.

[0152] Figure 7(c) shows that two sidelink users in the network coverage area perform mutual ranging or angle measurement by transmitting sidelink positioning reference signals under the control of the base station, and then transmit the measurement results to the core network positioning center via the base station. The core network positioning center performs location management functions. (L MF) network element.

[0153] To facilitate understanding of the embodiments of the present application, the following description is provided.

[0154] First, in this application, the term "indicate" may include direct indication and indirect indication. When certain indication information indicates A, the indication information may directly indicate A or indirectly indicate A, but does not explicitly indicate that the indication information conveys A.

[0155] Information indicated by the indication information is referred to as to-be-indicated information. In a specific implementation process, there are multiple ways to indicate the to-be-indicated information, including, but not limited to, the following ways: the to-be-indicated information is directly indicated, for example, the to-be-indicated information or an index of the to-be-indicated information is indicated. Alternatively, the to-be-indicated information may be indirectly indicated by indicating other information, and there is an association relationship between the other information and the to-be-indicated information. Alternatively, only a part of the to-be-indicated information may be indicated, and the other part of the to-be-indicated information is known or agreed upon in advance. For example, specific information may alternatively be indicated by using a pre-agreed (e.g., specified in a protocol) arrangement order of multiple pieces of information, which can reduce indication overhead to a certain extent. Furthermore, common parts of all information may be identified and indicated in a unified manner, which can reduce indication overhead caused by separately indicating the same information.

[0156] Second, "at least one" as used herein means one or more, and "multiple" means two or more. Furthermore, in the embodiments of the present application, terms such as "first," "second," and various numerical values ​​(e.g., "#1" and "#2") are used merely for distinction purposes to facilitate description and are not intended to limit the scope of the embodiments of the present application. The sequence numbers in the following processes do not indicate the order of execution. The order of execution of the processes should be determined based on the functions and internal logic of the processes and should not be construed as any limitation on the implementation process of the embodiments of the present application. It should be understood that objects described in this manner may be interchangeable, where appropriate, to describe solutions other than the embodiments of the present application. Furthermore, in the embodiments of the present application, words such as "S810" and "S820" are merely identifiers for facilitating description and do not limit the order of executing steps.

[0157] Third, in the embodiments of the present application, terms such as "example" or "for example" are used to provide an example, illustration, or explanation. Any embodiment or design scheme described in the present application as an "example" or "for example" should not be described as being preferred or having more advantages than another embodiment or design scheme. Rather, the use of terms such as "example" or "for example" is intended to present a relative concept in a particular manner.

[0158] Fourth, "storage" in the embodiments of the present application may refer to storage in one or more memories. The one or more memories may be located separately or integrated into the encoder, decoder, processor, or communication device. Alternatively, some of the one or more memories may be located separately, and some may be integrated into the decoder, processor, or communication device. The type of memory may be a storage medium in any form. This is not limited in the present application.

[0159] Fifth, the "protocol" in the embodiments of the present application may be a standard protocol in the communication field, for example, may include the NR protocol and related protocols applied to future communication systems, which is not limited in the present application.

[0160] Sixth, in the embodiments of the present application, "of," "corresponding," "relevant," "corresponding," and "associate" are often used interchangeably. It should be noted that when differences between terms are not emphasized, the meaning expressed is consistent.

[0161] Seventh, in the present specification, the term "and / or" is merely used to describe a relation between related objects, and indicates that three relations may exist. For example, A and / or B indicates the following three cases: only A exists, both A and B exist, and only B exists. Furthermore, the character " / " in the present specification generally indicates an "or" relation between related objects.

[0162] Eighth, in the method flowcharts in the accompanying drawings of this application, dashed boxes indicate optional steps.

[0163] It can be seen from the above that in a scenario where multiple users transmit SL-PRSs in a time-frequency multiplexed manner, contention will occur between the PSCCHs of different users. The present application provides a control information transmission method for avoiding PSCCH contention between different users. The control information transmission method will be described later.

[0164] It should be understood that the control information transmission method provided in the embodiments of the present application may be applied to a system for SL communication, for example, the communication system shown in FIG.

[0165] It should be further understood that the specific structure of the execution entity of the method provided in the embodiment of the present application is not particularly limited in the embodiment, provided that it is possible to execute communication according to the method provided in the embodiment of the present application by executing a program recording the code of the method provided in the embodiment of the present application. For example, the execution entity of the method provided in the embodiment of the present application may be a terminal device, or may be a functional module that can call and execute a program in the terminal device.

[0166] Hereinafter, the control information transmission method provided in the embodiments of the present application will be described by using an example in which a terminal device selects a resource.

[0167] 8 is a schematic flowchart of a control information transmission method according to an embodiment of the present application. The method includes the following steps: S810: The first terminal device determines, based on the quantity of reference signal resources to be set, a starting position of a frequency domain resource occupied by a control channel.

[0168] The configured reference signal resource includes a plurality of reference signal resources for transmitting a plurality of reference signals, and the reference signals have a one-to-one correspondence with the reference signal resource.

[0169] Specifically, the reference signal resource set in this embodiment is S, may be understood as pre-configured or configured resources for transmitting reference signals. The configured reference signal resources may be understood as related parameters configured for reference signal transmission. The specific format of the configured reference signal resources is not limited in this embodiment, and may be a configuration related to the reference signal resources and defined in the current protocol. This embodiment is mainly related to the number of configured reference signal resources, and the specific configuration content is not limited.

[0170] For example, the configured reference signal resources may be resources pre-configured by the network device for transmitting reference signals, for example, the network device pre-configures four reference signal resources, and the four reference signal resources are for transmitting four reference signals respectively.

[0171] In another example, the reference signals to be set may be set in real time by a network device, for example, the network device may set four reference signal resources based on the communication state of the terminal device in the current system, and the four reference signal resources are for transmitting four reference signals, respectively.

[0172] The control channel is for carrying control information, and the control information indicates information related to the first reference signal, such as time domain resource information, frequency domain resource information, the number of occupied symbols, or a sequence identifier of the first reference signal. (I D). The first reference signal is a reference signal transmitted by a reference signal resource among a plurality of reference signal resources occupied by the first terminal device. In other words, the first reference signal is a reference signal among a plurality of reference signals and is transmitted by the first terminal device.

[0173] For example, the control information may be the aforementioned SCI or sidelink positioning control information. (SThe specific format of the control information is not limited in this embodiment, and the control information may be control information carried on a control channel defined in the current protocol.

[0174] This embodiment is mainly related to a problem that, in a scenario in which multiple terminals respectively transmit multiple reference signals in a resource multiplexing manner, conflicts may occur between control information transmitted by different terminal devices on different control channels. The configured reference signal resources include multiple reference signal resources, which are respectively used by the multiple terminal devices to transmit reference signals. The multiple terminal devices respectively transmit control information on multiple control channels. The first terminal device is one of the multiple terminal devices, the control channel is a control channel of the multiple control channels corresponding to the first terminal device, and the first reference signal is a reference signal of the multiple reference signals transmitted by the first terminal.

[0175] For example, the reference signal in this embodiment may be a positioning reference signal (e.g., SL-PRS) or another reference signal transmitted in a time-frequency orthogonal format or a comb-like division format. The specific type of the reference signal is not limited in this embodiment. For ease of explanation, an example in which the reference signal is SL-PRS is used for explanation hereinafter.

[0176] For example, the control channel in this embodiment may be the aforementioned PSCCH or another channel carrying control information. The name of the control channel is not limited in this embodiment. For ease of explanation, an example in which the control channel is the PSCCH is used for explanation hereinafter.

[0177] In a possible implementation, the first terminal device determining, based on the number of configured reference signal resources, a starting position of a frequency domain resource occupied by a control channel includes: The first terminal device divides the bandwidth of the resource pool into a plurality of sub-bands based on the number of reference signal resources to be configured. reference signal It relates to the quantity of resources. The starting position of one of multiple sub-bands is the starting position of the frequency-domain resources, and the starting position of the sub-band may be represented by a starting resource block, or, if the concept of sub-channels exists in the system, the starting position of the sub-band may be represented by a starting sub-channel.

[0178] In other words, The starting position of one of the sub-bands of the bandwidth of the resource pool in which the configured reference signal resources are located is used as the starting position of the frequency-domain resource, and the number of the sub-bands is related to the number of the configured reference signal resources. Optionally, the bandwidths of the sub-bands are the same.

[0179] In another possible implementation, the first terminal device may directly determine the start position of the frequency domain resource occupied by the control channel based on the configured number of reference signal resources, for example, a correspondence between the number of reference signal resources and the start position of the frequency domain resource occupied by the control channel is pre-configured.

[0180] In yet another possible implementation, the first terminal device determines, through another device, the start position of the frequency domain resource occupied by the control channel based on the number of reference signal resources configured. For example, the first terminal device reports the number of reference signal resources to the management device, and the management device determines the start position of the frequency domain resource occupied by the control channel and notifies the first terminal device of the start position of the frequency domain resource.

[0181] It should be understood that the above-mentioned implementations are merely examples for describing a method for determining the starting position of the frequency domain resource occupied by the control channel based on the number of reference signal resources configured, and do not constitute any limitation on the scope of protection of the present application. Other methods for determining the starting position of the frequency domain resource occupied by the control channel based on the number of reference signal resources configured also fall within the scope of protection of the present application. Specific examples will not be described one by one again here.

[0182] For ease of explanation, the following uses an example in which a first terminal device determines multiple sub-bands based on the quantity of reference signal resources to be configured, and uses the starting position of one of the multiple sub-bands in the bandwidth of the resource pool in which the reference signal resources to be configured are located as the starting position of the frequency domain resource.

[0183] For example, multiple sub-bands may be understood as candidate resource locations for the control channel.

[0184] For example, the number of configured reference signal resources is four, and the bandwidth of the resource pool is divided into four sub-bands.

[0185] Furthermore, when the bandwidth of the resource pool in which the reference signal resources to be configured are arranged is an integer multiple of the quantity of the reference signal resources to be configured, the first terminal device dividing the bandwidth of the resource pool in which the reference signal resources to be configured are arranged into a plurality of sub-bands based on the quantity of the reference signal resources to be configured includes: the first terminal device equally dividing the bandwidth of the resource pool in which the reference signal resources to be configured are arranged into a plurality of sub-bands based on the quantity of the reference signal resources to be configured.

[0186] For example, if the number of reference signal resources to be set is 4 and the bandwidth of the resource pool in which the set reference signal resources are located is 20 M, the first terminal device can equally divide the 20 M bandwidth into four sub-bands, with each sub-band occupying a 5 M bandwidth.

[0187] In another example, the number of reference signal resources to be configured is 4, the bandwidth of the resource pool to which the configured reference signal resources are allocated is 20 M, and the concept of sub-channels is defined. For example, the 20 M bandwidth includes four sub-channels, and each sub-channel occupies a bandwidth of 5 M. In this case, the first terminal device can evenly divide the 20 M bandwidth into four sub-bands, and each sub-band occupies a bandwidth of 5 M, or each sub-band occupies one sub-channel.

[0188] In addition, if the bandwidth of the resource pool in which the reference signal resources to be set are located is not an integer multiple of the quantity of the reference signal resources to be set, the first terminal device divides the bandwidth of the resource pool in which the reference signal resources to be set are located into multiple sub-bands based on the quantity of the reference signal resources to be set, and the bandwidths of different sub-bands may be different.

[0189] For example, if the number of reference signal resources to be configured is 4 and the bandwidth of the resource pool in which the reference signal resources to be configured are located is 21 M, the first terminal device: 21 There is a possibility to divide the bandwidth of M into four sub-bands, three of which have a bandwidth of 5 M and the other sub-band has a bandwidth of 6 M.

[0190] It should be noted that in this embodiment, the number of the plurality of sub-bands is related to the number of the configured reference signal resources, which can be understood as the number of the plurality of sub-bands being equal to the number of the configured reference signal resources, or the number of the sub-bands being calculated based on the number of the configured reference signal resources.

[0191] For example, the number of configured reference signal resources is 4, and the number of sub-bands may be 4, 5, or another value. That is, for the number of sub-bands, refer to the number of configured reference signal resources.

[0192] It should be understood that the above-mentioned methods of dividing the bandwidth of the resource pool are merely examples and do not constitute any limitation on the scope of protection of the present application, and the details will not be described again here.

[0193] Specifically, the resource pool in this embodiment may be understood as follows: at least one resource pool is configured in the sidelink communication system, and each resource pool includes a segment of frequency resources and a group of time resources, e.g., a group of slot units. The frequency domain resources and time resources available to the resource pool may be specified by using signaling. Resource scheduling in the sidelink communication system is performed based on the resource pool. Specifically, a user can only schedule, assign, or reserve resources in the resource pool, e.g., time resources, frequency resources, or positioning reference signal resources. Reference signal resources are time-frequency resources for transmitting reference signals and are specified by using reference signal configuration information.

[0194] For example, the bandwidth of the resource pool may alternatively be the bandwidth occupied by the SL-PRS, or the bandwidth of the SL-PRS resource pool, or the BWP bandwidth, or the component carrier (C C) Bandwidth. CC bandwidth indicates the signal set on the CC and is independent of the BWP or BWP bandwidth.

[0195] For ease of understanding, specific implementations in which the first terminal device determines the starting position of the frequency domain resource occupied by the control channel in this implementation will be described below with reference to specific examples (e.g., Example 1 to Example 3), and the details will not be described again here.

[0196] Specifically, after determining the starting position of the frequency domain resource occupied by the control channel, the first terminal device can transmit control information on the control channel based on the starting position of the frequency domain resource. The method procedure shown in Figure 8 includes the following steps: S820: The first terminal device transmits control information to the second terminal device on a control channel based on a starting position of the frequency domain resource.

[0197] In this embodiment, the specific transmission manner for transmitting control information on the PSCCH is not limited. After the starting position of the frequency domain resource occupied by the PSCCH is determined, the frequency domain resource occupied by the PSCCH may be further determined. For the manner for transmitting control information on the PSCCH, please refer to the description in the existing related art. The details will not be described again here.

[0198] For example, the second terminal device may include a roadside unit or another device capable of receiving and demodulating the control information transmitted by the first terminal device in the SL scenario. The specific form of the second terminal device is not limited to this embodiment.

[0199] It should be understood that in this embodiment, the logics used by the transmitting end and the receiving end to determine the starting position of the frequency domain resource occupied by the PSCCH should be consistent. In other words, to correctly receive the control information transmitted on the PSCCH, the second terminal device needs to determine the starting position of the frequency domain resource occupied by the PSCCH. The method procedure shown in Figure 8 further includes the following steps: S830: The second terminal device determines, based on the quantity of the set reference signal resources, a starting position of a frequency domain resource occupied by a control channel.

[0200] Specifically, the manner in which the second terminal device determines the starting position of the frequency domain resource occupied by the control channel based on the number of configured reference signal resources is the same as that of the first terminal device. Details will not be described again here. Specific determination methods will be described later with reference to specific examples (e.g., Example 1 to Example 3).

[0201] Furthermore, after receiving the control information, the second terminal device can demodulate the control information. The method procedure shown in Figure 8 further includes the following steps: S840: The second terminal device demodulates the control information.

[0202] It should be understood that for the manner in which the second terminal device demodulates the control information in this embodiment, please refer to the description in the existing related art, and the details will not be described again here.

[0203] In the control information transmission method shown in FIG. 8, the first terminal device can determine the starting position of the frequency-domain resource occupied by the control channel (e.g., PSCCH) based on the number of configured reference signal resources. The starting position of the frequency-domain resource occupied by the control channel is different from the starting position of the frequency-domain resource occupied by the shared channel (e.g., PSSCH). As a result, it is not required to be based on the configuration method of multiplexing the PSSCH and the PSCCH (e.g., the starting position of the PSCCH must match the starting position of the PSSCH), and different determination methods exist. With respect to the positioning reference signal and control information, the starting position of the PSCCH may be different from the starting position of the SL-PRS, which can improve the flexibility of PSCCH resource allocation, reduce contention and collision between terminals, and thereby improve the probability of using positioning and the like.

[0204] For the association or allocation of PSCCH resources and SL-PRS resources, the present application provides three possible solutions:

[0205] Solution 1: A PSCCH resource has a one-to-one correspondence with an associated SL-PRS resource in the same slot. The advantage of the one-to-one correspondence between a PSCCH resource and an associated SL-PRS resource is that when an SL-PRS resource is reserved, the associated PSCCH resource is also reserved. In this way, different UEs occupying different SL PRS resources will transmit SCI by using different PSCCH resources. (Supporting a one-to-one mapping relationship between a PSCCH resource and an associated SL-PRS resource in the same slot. The advantage of accepting a one-to-one association between a PSCCH resource and an SL-PRS resource is that when an SL-PRS resource is reserved, the associated PSCCH resource will also be reserved. In this way, different UEs occupying different SL PRS resources will transmit SCI using different PSCCH resources.)

[0206] Solution 2: SL PRS resources are indicated by explicit signaling, and it is assumed that there is no association relationship between the SL PRS resources and the PSCCH resources. The problem with Solution 2 is that even if the SL-PRSs are orthogonal, an orthogonal PSCCH cannot be guaranteed or dedicated PSCCH resource selection is required (explicit signaling of SL PRS resources within the same slot; this alternative does not assume an association between the SL PRS and the PSCCH resources). The problem with this alternative is that even if the SL-PRSs are orthogonal, an orthogonal PSCCH cannot be guaranteed or dedicated PSCCH resource selection is required).

[0207] Solution 3: An association relationship between a PSCCH resource and one or more related SL-PRS resources in the same slot is supported, and the SL-PRS resources are indicated by explicit signaling. Solution 3 has high complexity and signaling overhead. For such a type of one-to-many mapping, it is assumed that the number of SL-PRS resources in a slot is much larger than the number of PSCCH candidate resources. However, in this case, for a single slot, the number of PSCCH candidates is upper bounded by the available SL-PRS resources anyway. This is effectively simplified as a one-to-one mapping. Furthermore, SCI overhead increases significantly. This is inappropriate (supporting a mapping relationship between a PSCCH resource and one or more associated SL-PRS resources within the same slot, this alternative would incur increased complexity and overhead. This one-to-many mapping assumes that there are many more SL-PRS resources in a slot than PSCCH candidates. However, it is understood that in this case the available SL-PRS resources for a single slot are anyway upper bounded by the number of PSCCH candidates, effectively reducing it to a one-to-one mapping. Furthermore, the SCI overhead would be significantly higher, which is simply not justified).

[0208] In conclusion, the association scheme shown in Solution 1 is mainly considered in this embodiment, and a one-to-one mapping relationship between PSCCH resources and associated SL-PRS resources in the same slot is supported (with respect to SL-PRS configuration and / or SL-PRS time allocation information, one-to-one mapping relationship between PSCCH resources and associated SL-PRS resources in the same slot is supported).

[0209] It should be understood that in this implementation, explicit signaling of specific SL PRS resources within the same slot is not required (in this case, no explicit signaling of any SL PRS resources is required for the same slot), and the quantity of PSCCH resources is the same as the quantity of SL-PRS resources (there are the same number of PSCCH resources and SL-PRS resources).

[0210] The SL PRS resource is associated with the PSCCH resource. For example, SL PRS resource k PRS Starting sub-channel of the PSCCH candidate resource associated with n subCH start The following relationship is satisfied: (Note that we propose to simplify the association scheme between the SL PRS resource and the PSCCH resource. For example, the SL PRS resource k PRS Starting sub-channel of the PSCCH candidate resource associated with n subCH start is given by:)

[0211]

number

[0212] Below, a specific implementation of a terminal device determining the starting position of the frequency domain resource occupied by the control channel based on the number of reference signal resources to be set will be described with reference to specific examples (e.g., specific example 1 to specific example 3).

[0213] Example 1: The reference signal resource to be configured is an SL-PRS resource configured in one slot.

[0214] Optionally, SL-PRS resources configured in one slot may be understood as SL-PRS resources configured in the slot, or as SL-PRS resources configured in a resource pool used for SL-PRS transmission. The resource pool used for SL-PRS transmission includes multiple slots, and SL-PRS resources configured in each of the multiple slots may be understood as SL-PRS resources configured in the resource pool used for SL-PRS transmission.

[0215] For example, the resource pool used for SL-PRS transmission is resource pool #1, which includes three slots (slot #1, slot #2, and slot #3). If four SL-PRS resources are configured for resource pool #1, this may be understood as the same amount of SL-PRS resources, i.e., four SL-PRS resources, being configured in each of slot #1, slot #2, and slot #3.

[0216] As shown in FIG. 9, in the time domain, the PSCCH occupies symbols other than the AGC symbols in the first few (e.g., first two or three) symbols in a slot, and the SL-PRS occupies symbols other than the PSCCH symbols, AGC symbols, and interval (GAP) symbols in the slot.

[0217] It should be understood that Figure 9 only shows the functions of various symbols in one slot in the time domain as an example, and does not constitute any limitation on the scope of protection of the present application. The functions of different symbols in one slot may alternatively be in other forms. For example, the two symbols shown in Figure 9 nd The AGC (eg, the AGC between the PSCCH and the SL-PRS in FIG. 9) may not be present.

[0218] When four SL-PRS resources (e.g., SL-PRS#1, SL-PRS#2, SL-PRS#3, and SL-PRS#4 shown in FIG. 9) are preconfigured in a slot (or a resource pool in which the slots are located), the bandwidth of the resource pool may be divided into four sub-bands or four candidate positions (e.g., PSCCH#1, PSCCH#2, PSCCH#3, and PSCCH#4 shown in FIG. 9). Each sub-band (or each candidate position) corresponds to one PSCCH, and each sub-band (or each candidate position) is for transmitting one PSCCH.

[0219] When user UE#A occupies SL-PRS#1 to transmit a positioning reference signal, UE#A occupies one of PSCCH#1 to PSCCH#4 to transmit SPCI.

[0220] For example, UE#A occupies PSCCH#1 and transmits SPCI, where SPCI indicates information related to SL-PRS#1, such as time domain resource information of SL-PRS#1, frequency domain resource information of SL-PRS#1, the number of symbols occupied by SL-PRS#1, or the sequence ID of SL-PRS#1.

[0221] When UE#B occupies the SL-PRS#2 resource to transmit a positioning reference signal, UE#B occupies one of PSCCH#1 to PSCCH#4 to transmit SPCI.

[0222] For example, UE#B occupies PSCCH#2 and transmits SPCI, where SPCI indicates information related to SL-PRS#2, such as time domain resource information of SL-PRS#2, frequency domain resource information of SL-PRS#2, the number of symbols occupied by SL-PRS#2, or the sequence ID of SL-PRS#2.

[0223] For example, the location of the PSCCH is related to the number of pre-configured SL-PRSs, and the frequency domain starting locations of different PSCCHs are shown in Figure 10. Figure 10 is a diagram of the frequency domain starting locations of different PSCCHs according to an embodiment of the present application.

[0224] It can be seen from FIG. 10(a) that the frequency domain starting positions of different PSCCHs are shown in RB granularity, and the frequency domain starting positions of different PSCCHs are different RBs.

[0225] It can be seen from (b) of Figure 10 that the frequency-domain starting positions of different PSCCHs are shown with sub-channel granularity, that is, the frequency-domain starting positions of different PSCCHs are different sub-channels, and the frequency-domain starting position of a PSCCH is the starting (or lowest) RB of the sub-channel corresponding to the PSCCH; in other words, the frequency-domain starting positions of different PSCCHs are different RBs.

[0226] It should be understood that Figure 10 only shows an example of possible granularity of the frequency domain starting position of the PSCCH, and does not constitute any limitation on the scope of protection of the present application. For example, the granularity may be RE granularity. The details will not be described again here.

[0227] Specifically, it is set reference signal The quantity of the reference signals of the resources, the starting positions of the frequency domain resources, and the indexes of the frequency domain resources satisfy the following relationship:

[0228]

number

[0229]

number

[0230] Alternatively, it is set reference signal resource Number ofThe quantity, the starting position of the frequency domain resource, and the index of the frequency domain resource satisfy the following relationship:

[0231]

number

[0232]

number

[0233]

number

[0234]

number

[0235] For example, the index of the reference signal resource may be an identifier or ID of the reference signal resource, or resource The index of the reference signal resource may be obtained through calculation based on the configuration information, identifiers, or IDs of the reference signal resources. For example, the index of the reference signal resource may be obtained by sorting the IDs of the reference signal resources in order.

[0236] In a possible implementation, k prs is the reference signal as shown in Table A below. resource It may also be the ID of Table A

[0237] [Table 1] In another possible implementation, k prs is obtained by sorting the IDs of the reference signal resources in order, as shown in Table B below. Table B

[0238] [Table 2] k0 is a fixed constant, e.g., 0, 1, 2, or 3. The frequency-domain starting position of the control channel is its frequency-domain position within the resource pool. For example, if the frequency-domain starting position is 0, it indicates the lowest frequency, lowest subchannel, or lowest RB in the resource pool. In other words, the absolute frequency-domain position of the control channel needs to be calculated using the lowest frequency in the resource pool as a reference.

[0239] In Example 1, a terminal device may determine the number of candidate frequency-domain resources for a PSCCH based on the number of configured SL-PRS resources, and may select one candidate resource from the candidate frequency-domain resources for the PSCCH to transmit the PSCCH when transmitting the PSCCH. The probability that different terminal devices select the same candidate resource is low, thereby reducing the probability of contention between SCIs transmitted by different terminal devices on the PSCCH. Furthermore, in the method for determining a PSCCH resource shown in Example 1, the complexity of blind detection of the PSCCH is low.

[0240] Example 2: The pre-configured reference signal resource is an SL-PRS resource configured within one slot, and the index of the SL-PRS resource is used to determine the position of the PSCCH corresponding to the SL-PRS.

[0241] In Example 1, a method is provided for determining the number of candidate resources for a PSCCH based on the number of configured SL-PRS resources. In Example 2, a method is provided for further determining, for a plurality of candidate resource locations, the location of a PSCCH corresponding to an SL-PRS based on an index of the SL-PRS resource, i.e., each SL-PRS resource corresponds to a frequency-domain location of a PSCCH corresponding to an SL-PRS.

[0242] Specifically, the terminal device determines an index for each of the plurality of SL-PRS resources based on identifiers of the plurality of SL-PRS resources, and the terminal device determines an index for each of the plurality of sub-bands based on a frequency domain position (or frequency) corresponding to each of the plurality of sub-bands.

[0243] In other words, an index for each of the plurality of SL-PRS resources is determined based on identifiers of the plurality of SL-PRS resources, and an index for each of the plurality of sub-bands is determined based on a frequency-domain position corresponding to each of the plurality of sub-bands.

[0244] For example, three SL-PRS resources are configured, including SL-PRS#1, SL-PRS#2, and SL-PRS#3. The identifiers of SL-PRS#1, SL-PRS#2, and SL-PRS#3 are ID#1, ID#10, and ID#11, respectively. The multiple SL-PRSs, i.e., SL-PRS#1, SL-PRS#2, and SL-PRS#3, can be recoded (e.g., in descending or ascending order) based on the identifiers of SL-PRS#1, SL-PRS#2, and SL-PRS#3. For example, the three reference signal resources are recoded in descending order of the identifiers of the SL-PRS resources to obtain SL-PRS#1, SL-PRS#2, and SL-PRS#3 with indices of 1, 2, and 3, respectively. Furthermore, the number of subbands is equal to the number of SL-PRS resources configured. The three subbands include subband #1, subband #2, and subband #3, and the frequency-domain positions of subband #1, subband #2, and subband #3 are 2.5 M, 7.5 M, and 12.5 M, respectively. The multiple subbands, i.e., subband #1, subband #2, and subband #3, can be coded based on the frequency-domain positions of subband #1, subband #2, and subband #3 (e.g., in descending or ascending order). For example, the three subbands are coded in descending order of the frequency-domain positions to obtain subband #1, subband #2, and subband #3 with indices 1, 2, and 3, respectively.

[0245] Specifically, the terminal device transmits (or receives) a first reference signal in a resource whose resource index is a first index, and transmits (or receives) control information on a control channel based on the starting position of the subband corresponding to the first index.

[0246] In a possible implementation, the sub-band corresponding to the first index may be the sub-band whose index is the first index.

[0247] For example, the first index is 1, and the index of the sub-band corresponding to the first index is 1.

[0248] In another possible implementation, the sub-band corresponding to the first index may be the sub-band whose index is related to the first index. For example, the index of the SL-PRS resource has a one-to-one correspondence with the index of the sub-band ( If the index of an SL-PRS resource is 1, the index of the corresponding sub-band is 3; If the index of an SL-PRS resource is 2, the index of the corresponding sub-band is 1; If the index of an SL-PRS resource is 3, the index of the corresponding sub-band is 2; ) If the first index is 1, the sub-band index corresponding to the first index is 3.

[0249] Specifically, the one-to-one correspondence between the SL-PRS resource indexes and the sub-band indexes may be stored in the terminal device in the form of a pre-configured table.

[0250] For example, the relationship between SL-PRS resource index and sub-band index is shown in Table 1 and Table 2 below. Table 1

[0251] [Table 3] The case shown in Table 1 indicates that the index of the SL-PRS resource and the index of the sub-band are the same. Table 2

[0252] [Table 4] The case shown in Table 2 indicates that the index of the SL-PRS resource has a one-to-one correspondence with the index of the sub-band.

[0253] For ease of understanding, the case where different SL-PRS resources correspond to different candidate resource positions of the PSCCH will be described with reference to Figure 11. As shown in Figure 11, different SL-PRS resources correspond to different candidate resource positions of the PSCCH.

[0254] It can be seen from FIG. 11 that the SL-PRS#1 resource to the SL-PRS#4 resource correspond to the PSCCH candidate resource #1 to the PSCCH candidate resource #4, respectively. SPCI#1 transmitted on candidate resource #1 of the PSCCH indicates information related to the SL-PRS#1 resource; SPCI#2 transmitted on candidate resource #2 of the PSCCH indicates information related to the SL-PRS#2 resource; SPCI#3 transmitted on candidate resource #3 of the PSCCH indicates information related to the SL-PRS#3 resource; It can be seen from FIG. 11 that SPCI#4 transmitted on candidate resource #4 of PSCCH indicates information related to the SL-PRS#4 resource.

[0255] In other words, after determining four candidate resource positions for the PSCCH according to the method shown in Example 1, the first terminal does not randomly select a candidate resource position from among the candidate resource positions as the resource for the PSCCH, but determines a specific candidate resource for the PSCCH as the resource for the PSCCH based on the SL-PRS resource occupied for transmitting the SL-PRS.

[0256] For example, the first terminal may perform joint coding on the four configured SL-PRS resources, and the joint coding scheme may include: coding the indices of different SL-PRS resources as 1, 2, 3, and 4, or 0, 1, 2, and 3 based on resource IDs or in another coding scheme, i.e., one SL-PRS resource corresponds to one identifier.

[0257] The first terminal then encodes the four determined candidate resource locations of the PSCCH in ascending frequency order as 1, 2, 3, and 4, or 0, 1, 2, and 3, or other codes. That is, one candidate resource location of the PSCCH corresponds to one index. The coding scheme of the first terminal for the multiple SL-PRS resources is the same as the coding scheme for the candidate resource locations of the PSCCH.

[0258] For example, if the indices of the four SL-PRS resources are 1, 2, 3, and 4, respectively, then the indices of the four candidate resource locations for the PSCCH are 1, 2, 3, and 4, respectively.

[0259] For example, if the indices of the four SL-PRS resources are 0, 1, 2, and 3, respectively, then the indices of the four candidate resource locations for the PSCCH are 0, 1, 2, and 3, respectively.

[0260] When the terminal transmits an SL-PRS on an SL-PRS resource having an index of 1, the terminal correspondingly transmits an SCI on a PSCCH at a candidate position of a PSSCH having an index of 1. Alternatively, when the terminal receives an SL-PRS on an SL-PRS resource having an index of 1, the terminal correspondingly receives an SCI on a PSCCH at a candidate position of a PSSCH having an index of 1. Specifically, a formula for calculating the frequency-domain starting position of a PSCCH may be expressed as follows: If the index of the SL-PRS resource is encoded starting from 0:

[0261]

number

[0262]

number

[0263]

number

[0264] For example, f k specifies a fixed offset value. The offset value may be associated with the index or may be independent of the index. The value of the offset value may be 0, 1, 2, ... or another natural number. This is not limited to this example.

[0265] Compared with Example 1, Example 2 specifically designs the mapping relationship between the candidate resource positions of the PSCCH and the SL-PRS resources, and determines the specific start frequency of the PSCCH based on the index of the SL-PRS by encoding the configured SL-PRS resource, which avoids conflicts between SCIs transmitted by different terminal devices on the PSCCH.

[0266] Example 3: The configured reference signal resources are SL-PRS resources configured in multiple slots.

[0267] In Example 1 and Example 2, the candidate resource locations of the PSCCH are determined based on the number of SL-PRS resources configured in a slot. Example 3 plans a method for jointly encoding SL-PRS resources in multiple slots to determine the candidate resource frequency-domain locations of the PSCCH.

[0268] Specifically, when multiple resources are arranged in multiple slots, at least one of the multiple slots includes multiple frequency domain resources corresponding to multiple PSCCHs, respectively.

[0269] In a possible implementation, odd-numbered slots contain candidate resource locations for PSCCH, and all even-numbered slots are used for SL-PRS transmission.

[0270] In another possible implementation, the even numbered slots contain candidate resource locations for the PSCCH, and all odd numbered slots are used for SL-PRS transmission.

[0271] In yet another possible implementation, the first slot contains candidate resource locations for the PSCCH, and all remaining slots are used for SL-PRS transmission.

[0272] The above-mentioned implementations are merely examples for explanation. When the PSCCHs in multiple slots are jointly designed, at least one of the multiple slots includes the candidate resource positions of the PSCCH. The specific one or more slots including the candidate resource positions of the PSCCH are not limited in this embodiment.

[0273] For ease of explanation, joint encoding of two slots is used as an illustrative example. For example, slot 1 represents an odd-numbered slot, and slot 2 represents an even-numbered slot. As shown in Figure 12, slot 1 includes PSCCH resources and SL-PRS resources, and slot 2 includes only SL-PRS resources. The SCI corresponding to the SL-PRS in slot 2 is transmitted on the PSCCH resource in slot 1.

[0274] It is assumed that four resources are configured in slot 1 and two resources are configured in slot 2. In this case, the two slots have a total of six SL-PRS resources. Therefore, there are a total of six PSCCH candidate positions in slot 1, which correspond to SL-PRS#1 through SL-PRS#6, respectively.

[0275] It should be understood that the above description is merely an example of two slots and may be extended to other cases. For example, SL-PRS in more than two slots may be jointly coded and share PSCCH resources within the same slot. Furthermore, slot 1 may alternatively include only PSCCH resources and no SL-PRS resources or the like.

[0276] The PSCCHs of SL-PRS resources in multiple slots are jointly scheduled, which effectively reduces the resource overhead of the PSCCHs. For example, if the PSCCH in each slot occupies three symbols, the overhead is 3 / 14. If two slots are jointly coded, the PSCCH overhead is 3 / 28, which is reduced by half. This improves the SL-PRS resource utilization and the SL-PRS capacity or user capacity.

[0277] For example, if a PSCCH resource exists in each slot, the overhead of the PSCCH resource is excessively high for positioning. In the method for jointly planning PSCCH in multiple slots provided in Example 3, the PSCCH resource exists only in some slots, and joint indication is performed for the SL-PRS in the slot (the slot where the PSCCH resource exists) and the SL-PRS in another slot, so that the resource overhead of the PSCCH can be effectively reduced.

[0278] Furthermore, the multiplexing scheme among multiple SL-PRS resources is not limited in this embodiment of the present application. For example, comb division, frequency division, time division, comb division, and the like may be performed for SL-PRS#1 to SL-PRS#4. Comb division indicates that different SL-PRS resources are orthogonal to each other like combs, which may be understood as a specific time division and frequency division multiplexing scheme. For example, comb division multiplexing is used for SL-PRS#1 to SL-PRS#4 in FIG. 11.

[0279] For ease of understanding, the multiplexing scheme between SL-PRS resources will be briefly explained with reference to FIG.

[0280] It can be seen from FIG. 13 that comb division multiplexing is used among multiple SL-PRS resources.

[0281] In the control information transmission method shown in Figure 8, a method for determining the location of PSCCH resources is considered when a specific number of SL-PRS resources are pre-configured. The present application further provides another communication method, which relates to how a terminal device determines the location of PSCCH resources when the number of SL-PRS resources is not configured, and how a network device configures the SL-PRS resources of the terminal on demand based on a request from the terminal device. The control information transmission method will be described in detail with reference to Figure 14.

[0282] 14 is a schematic flowchart of another control information transmission method according to an embodiment of the present application. The method includes the following steps:

[0283] S1410: A first terminal device receives configuration information from a network device.

[0284] Specifically, the configuration information is for setting reference signal resources.

[0285] S1420: The first terminal determines, based on the configuration information, a starting position of a frequency domain resource occupied by a control channel.

[0286] The control channel is for carrying control information, which indicates information related to reference signals.

[0287] In a possible implementation, the configuration information is resource The comb size and frequency domain offset values ​​are included.

[0288] In another possible implementation, the configuration information includes an identifier (ID) of a reference signal resource, information about a PSCCH carried in the reference signal resource configuration, information about an SCI carried in the reference signal resource configuration, or the like. The information about the PSCCH may be an index of the PSCCH, and the index of the PSCCH indicates a frequency-domain starting position of the PSCCH. The information about the SCI may also indicate a frequency-domain starting position of the PSCCH.

[0289] It should be understood that the above-mentioned several implementations are merely examples for illustrating the specific contents included in the configuration information, and do not constitute any limitation on the scope of protection of the present application. Other configuration information of reference signal resources that can be used to determine the starting position of the frequency domain resource occupied by the control channel also falls within the scope of protection of the present application. Each specific example will not be described again here.

[0290] For ease of explanation, the configuration information is resource An example involving comb tooth sizes and frequency domain offset values ​​corresponding to is used below for illustration purposes.

[0291] In a possible implementation, the first terminal uses the starting position of a first sub-band among multiple sub-bands of the bandwidth of the resource pool in which the reference signal resource is located as the starting position of the frequency domain resource, the number of the multiple sub-bands is related to the comb tooth size, the ranking of the first sub-band among the multiple sub-bands is related to the frequency domain offset value, and the starting position of the sub-band includes any one of: a starting resource block index, a starting sub-channel index, a starting frequency index, or a starting sub-carrier index.

[0292] In other words, the first terminal divides the bandwidth of the resource pool in which the reference signal resources are arranged into a plurality of sub-bands based on the comb tooth size, the number of the plurality of sub-bands being related to the comb tooth size, and the first terminal determines the ranking of the sub-bands corresponding to the frequency-domain resources among the plurality of sub-bands based on the frequency-domain offset values, and the starting position of the sub-band corresponding to the frequency-domain resource is the starting position of the frequency-domain resource.

[0293] In another possible implementation, the first terminal receives a reference signal resource Based on the comb tooth size and frequency domain offset value corresponding to the reference signal, it is possible to directly determine the starting position of the frequency domain resource occupied by the control channel. resource The correspondence between the comb tooth size and frequency domain offset value corresponding to each control channel and the starting position of the frequency domain resource occupied by the control channel is preset.

[0294] Some of the implementations mentioned above use the reference signal resource It should be understood that the above is merely an example to illustrate a manner of determining the starting position of the frequency domain resource occupied by the control channel based on the comb tooth size and frequency domain offset value corresponding to the reference signal, and does not constitute any limitation on the scope of protection of the present application. resource Other methods for determining the starting position of the frequency domain resource occupied by the control channel based on the corresponding comb tooth size and frequency domain offset value also fall within the scope of protection of the present application. Specific examples will not be described one by one again here.

[0295] For ease of explanation, hereinafter, it is assumed that the first terminal receives the reference signal resourceand determining a plurality of sub-bands based on the comb tooth sizes and frequency domain offset values ​​corresponding to the plurality of sub-bands, and using the start position of one of the plurality of sub-bands in the bandwidth of the resource pool in which the reference signal resources are located as the start position of the frequency domain resource.

[0296] For example, the bandwidths of the multiple sub-bands are the same.

[0297] For example, when the bandwidth of a resource pool in which reference signal resources are arranged is an integer multiple of the comb tooth size, the terminal device dividing the bandwidth of the resource pool in which reference signal resources are arranged into a plurality of sub-bands based on the comb tooth size includes: the terminal device equally dividing the bandwidth of the resource pool in which reference signal resources are arranged into a plurality of sub-bands based on the comb tooth size.

[0298] For example, the network device configures SL-PRS resource 1 for UE#A and SL-PRS resource 2 for UE#B.

[0299] The comb tooth size of SL-PRS resource 1 and the comb tooth size of SL-PRS resource 2 are both 4, the offset value of SL-PRS resource 1 is 0, and the offset value of SL-PRS resource 2 is 1.

[0300] In this case, UE#A divides the bandwidth of the resource pool (or the bandwidth occupied by the SL-PRS, the system bandwidth, the available bandwidth of the PSCCH, or the like) into four sub-bands, i.e., four candidate resources for the PSCCH. Since the offset value of SL-PRS resource 1 is 0, i.e., there is no offset, the first candidate resource for the PSCCH among the four candidate resources for the PSCCH is the PSCCH resource of UE#A and is used to transmit SPCI.

[0301] Since the frequency domain offset value of SL-PRS resource 2 is 1, UE#B transmits SPCI on the second candidate PSCCH resource out of the four PSCCH candidate resources.

[0302] The candidate resources for the PSCCH are determined in the above manner, so that conflicts between the control information carried on the PSCCH of different terminal devices can be avoided.

[0303] Specifically, the mathematical formula for calculating the frequency domain location of the PSCCH may be expressed as follows:

[0304]

number

[0305]

number

[0306] If the base station does not pre-configure SL-PRS resources for a terminal, the terminal cannot determine the number of SL-PRS resources in one slot and therefore cannot determine the location of the corresponding PSCCH resource. In this case, a method for determining the location of a PSCCH resource based on the SL-PRS comb tooth size and frequency domain offset value is provided. Because different users usually occupy different comb teeth, i.e., have different frequency domain offset values, different candidate locations for the PSCCH are provided to avoid collisions.

[0307] Unlike conventional methods for determining PSCCH resources, the embodiment shown in FIG. 14 provides a method for determining PSCCH resources based on SL-PRS configuration information, the number of comb teeth, and offset values. To avoid conflicts between SL-PRSs, the SL-PRS configurations of different users need to be different (different comb teeth, different frequency-domain offset values, and the like are required). Therefore, the PSCCHs determined based on the SL-PRS configurations are also different. This can reduce the probability of conflicts caused by control information transmitted on the control channel by different terminal devices.

[0308] It should be understood that the sequence numbers of the above processes do not mean the execution sequence, and the execution sequence of the processes should be determined based on the functions and internal logic of the processes, and should not be construed as any limitation on the implementation process of the embodiments of the present application.

[0309] It should be further understood that in the embodiments of the present application, unless otherwise stated or there is no logical contradiction, the terms and / or descriptions in different embodiments are consistent and may be cross-referenced, and the technical features in different embodiments may be combined based on their internal logical relationships to form new embodiments. For example, a fixed resource candidate location of the PSCCH may be designed, and the specific resource location of the PSCCH may be determined based on the UE ID.

[0310] It should be further understood that in some of the above embodiments, devices (e.g., network devices or terminal devices) in an existing network architecture are mainly used as examples for explanation. It should be understood that the specific form of the device is not limited to the embodiments of the present application. For example, all devices capable of realizing the same functions in the future are applicable to the embodiments of the present application.

[0311] It can be understood that in the foregoing method embodiments, the methods and operations performed by the network device may alternatively be performed by components that may be used in the network device, and the methods and operations performed by the terminal device may alternatively be performed by components that may be used in the terminal device.

[0312] The control information transmission method provided in the embodiments of the present application has been described in detail above with reference to Figures 3 to 14. The above control information transmission method is mainly described from the perspective of a terminal device. It can be understood that to realize the above functions, the terminal device includes corresponding hardware structures and / or software modules for performing the functions.

[0313] Those skilled in the art should recognize that the units and algorithm steps of the examples described in this application with reference to the embodiments disclosed in this specification can be realized by hardware or a combination of hardware and computer software. Whether a function is performed by hardware or by hardware driven by computer software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for specific applications, but such implementation should not be considered to go beyond the scope of this application.

[0314] The communication device provided in the embodiment of the present application will be described in detail below with reference to Figures 15 and 17. It should be understood that the description of the device embodiment corresponds to the description of the method embodiment. Therefore, for the contents not described in detail, please refer to the above method embodiment. For the sake of brevity, some contents will not be described again.

[0315] In the embodiments of the present application, the functional modules of the transmitting end device or the receiving end device may be obtained by division based on the above-mentioned method example. For example, each functional module may be obtained by division based on each function, or two or more functions may be integrated into one processing module. The integrated module may be implemented in the form of hardware or in the form of a software functional module. It should be noted that in the embodiments of the present application, the module division is an example and is merely a logical functional division. In actual implementation, other division methods may be used. The following description will be given by using an example in which each functional module is obtained by division based on its corresponding function.

[0316] 15 is a block diagram of a communication device 10 according to an embodiment of the present application. The device 10 includes a transceiver module 11 and a processing module 12. The transceiver module 11 is capable of implementing corresponding communication functions, and the processing module 12 is configured to perform data processing. In other words, the transceiver module 11 is configured to perform transmission / reception-related operations, and the processing module 12 is configured to perform operations other than reception and transmission. The transceiver module 11 may also be referred to as a communication interface or a communication unit.

[0317] It should be understood that the aforementioned transceiver module 11 may include a transmitting module and a receiving module. The transmitting module is configured to perform a transmitting operation of the communication device, and the receiving module is configured to perform a receiving operation of the communication device. For ease of explanation, in this embodiment of the present application, the transmitting module and the receiving module are combined into one transceiver unit. This has been described throughout the present application, and the details will not be described again below.

[0318] Optionally, the apparatus 10 may further include a storage module 13. The storage module 13 may be configured to store instructions and / or data. The processing module 12 may read the instructions and / or data in the storage module to enable the apparatus to perform the device operations in the method embodiments described above.

[0319] In a first design, apparatus 10 may correspond to or be a component (e.g., a chip) of a first terminal device in the method embodiments described above.

[0320] The apparatus 10 may perform steps or procedures performed by the first terminal device in the aforementioned method embodiments. The transceiver module 11 may be configured to perform transmission / reception-related operations of the first terminal device in the aforementioned method embodiments. The processing module 12 may be configured to perform processing-related operations of the first terminal device in the aforementioned method embodiments.

[0321] In one possible implementation, the processing module 12 is configured to determine a starting position of a frequency domain resource occupied by a control channel based on a quantity of configured reference signal resources, the control channel being for carrying control information, and the configured reference signal resources including a plurality of reference signal resources. The transceiver module 11 is configured to transmit the control information on the control channel based on the starting position of the frequency domain resource.

[0322] When the device 10 is configured to perform the method of FIG. 8, the transceiver module 11 may be configured to perform an information transmitting step in the method, e.g., step S820, and the processing module 12 may be configured to perform a processing step in the method, e.g., step S810.

[0323] When the device 10 is configured to perform the method of FIG. 14, the transceiver module 11 may be configured to perform the information transmitting / receiving step in the method, e.g., step S1410, and the processing module 12 may be configured to perform the processing step in the method, e.g., step S1420.

[0324] It should be understood that the specific processes by which the units perform the aforementioned corresponding steps have been described in detail in the aforementioned method embodiments, and for the sake of brevity, the details will not be described again here.

[0325] In a second design, apparatus 10 may correspond to or be a component (eg, a chip) of the second terminal device in the method embodiments described above.

[0326] The apparatus 10 may perform steps or procedures performed by the second terminal device in the aforementioned method embodiments. The transceiver module 11 may be configured to perform transmission / reception-related operations of the second terminal device in the aforementioned method embodiments. The processing module 12 may be configured to perform processing-related operations of the second terminal device in the aforementioned method embodiments.

[0327] In one possible implementation, the processing module 12 is configured to determine a starting position of a frequency domain resource occupied by a control channel based on a quantity of configured reference signal resources, the control channel being for carrying control information, and the configured reference signal resources including a plurality of reference signal resources. The transceiver module 11 is configured to transmit the control information on the control channel based on the starting position of the frequency domain resource.

[0328] When the device 10 is configured to perform the method of FIG. 8, the transceiver module 11 may be configured to perform the information transmitting / receiving steps of the method, e.g., step S820, and the processing module 12 may be configured to perform the processing steps of the method, e.g., steps S830 and S840.

[0329] It should be understood that the specific processes by which the units perform the aforementioned corresponding steps have been described in detail in the aforementioned method embodiments, and for the sake of brevity, the details will not be described again here.

[0330] It should be further understood that the apparatus 10 in this case is embodied in the form of a functional module. The term "module" in this case may refer to an application-specific integrated circuit (ASIC), an electronic circuit, a processor (e.g., a shared processor, a dedicated processor, or a group processor) configured to execute one or more software or firmware programs, a memory, a merge logic circuit, and / or other suitable components that support the described functionality. Those skilled in the art will appreciate that, in an optional example, the apparatus 10 may specifically be a mobility management network element in the aforementioned embodiments and may be configured to perform procedures and / or steps corresponding to those of the mobility management network element in the aforementioned method embodiments. Alternatively, the apparatus 10 may specifically be a terminal device in the aforementioned embodiments and may be configured to perform procedures and / or steps corresponding to those of the terminal device in the aforementioned method embodiments. To avoid repetition, details will not be described again here.

[0331] The apparatus 10 in the above solution has functions to perform corresponding steps performed by a device (e.g., a mobility management network element, a session management network element, a relay terminal device, or a remote terminal device) in the above method. The functions may be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions. For example, a transceiver module may be replaced with a transceiver (e.g., a transmitting unit in a transceiver module may be replaced with a transmitter, and a receiving unit in a transceiver module may be replaced with a receiver), and another unit, e.g., a processing module, may be replaced with a processor to perform the transmitting / receiving operations and processing-related operations in the method embodiments, respectively.

[0332] Also, the transceiver module 11 may alternatively be a transceiver circuit (which may include, for example, a receiving circuit and a transmitting circuit) and the processing module may be a processing circuit.

[0333] 16 is a diagram of another communication device 20 according to an embodiment of the present application. The device 20 includes a processor 21. The processor 21 is configured to execute computer programs or instructions stored in a memory 22 or to read data / signaling stored in the memory 22 to perform the method in the aforementioned method embodiments. Optionally, there may be more than one processor 21.

[0334] Optionally, as shown in Figure 16, the device 20 further includes a memory 22 configured to store computer programs or instructions and / or data. The memory 22 may be integrated with the processor 21 or may be located separately. Optionally, there may be more than one memory 22.

[0335] Optionally, as shown in Figure 16, the device 20 further includes a transceiver 23, which is configured to receive and / or transmit signals. For example, the processor 21 is configured to control the transceiver 23 to receive and / or transmit signals.

[0336] It should be understood that the aforementioned transceiver 23 may include a transmitting module and a receiving module. The transmitting module is configured to perform a transmitting operation of the communication device, and the receiving module is configured to perform a receiving operation of the communication device. For ease of explanation, in this embodiment of the present application, the transmitting module and the receiving module are combined into one transceiver 23. This has been described throughout the present application, and the details will not be described again below.

[0337] In the solution, the apparatus 20 is configured to perform the operations performed by the first terminal device in the aforementioned method embodiments.

[0338] In another solution, the apparatus 20 is configured to perform the operations performed by the second terminal device in the aforementioned method embodiments.

[0339] The processor referred to in the embodiments of this application is a central processing unit. (C PU), or alternatively, another general purpose processor, digital signal processor (D SP), Application Specific Integrated Circuit (A SIC), Field Programmable Gate Array (F It should be understood that the general purpose processor may be a microprocessor or any conventional processor, or the like.

[0340] It should be further understood that the memory referred to in the embodiments of the present application may be a volatile memory and / or a non-volatile memory. (R OM), Programmable Read-Only Memory (P ROM), erasable programmable read-only memory (E PROM), Electrically Erasable Programmable Read-Only Memory (E Volatile memory may be random access memory (RAM). For example, RAM may be used as external cache. By way of example, and not limitation, RAM may be static random access memory (EPROM), or flash memory. (S RAM), Dynamic Random Access Memory (DRAM), synchronous dynamic random access memory (S DRAM), Double Data Rate Synchronous Dynamic Random Access Memory (D DR SDRAM), Enhanced Synchronous Dynamic Random Access Memory (E SDRAM), SyncLink Dynamic Random Access Memory (S LDRAM) and Direct Rambus Random Access Memory (D It includes multiple forms such as RRAM.

[0341] It should be noted that if the processor is a general-purpose processor, a DSP, an ASIC, an FPGA, or another programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, the memory (storage module) may be integrated into the processor.

[0342] Additionally, it should be noted that memory as described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

[0343] 17 is a diagram of a chip system 30 according to an embodiment of the present application. The chip system 30 (also referred to as a processing system) includes a logic circuit 31 and an input / output interface 32.

[0344] The logic circuit 31 may be a processing circuit in the chip system 30. The logic circuit 31 is coupled and connected to a storage unit and can invoke instructions in the storage unit, thereby enabling the chip system 30 to implement the methods and functions in the embodiments of the present application. The input / output interface 32 may be an input / output circuit in the chip system 30, which outputs information processed by the chip system 30 or inputs data or signaling information to be processed into the chip system 30 for processing.

[0345] In one solution, the chip system 30 is configured to perform the operations performed by the first terminal device in the aforementioned method embodiments.

[0346] For example, the logic circuitry 31 is configured to perform processing-related operations performed by the first terminal device in the aforementioned method embodiments, and the input / output interface 32 is configured to perform transmission and / or reception-related operations performed by the first terminal device in the aforementioned method embodiments.

[0347] In another solution, the chip system 30 is configured to perform the operations performed by the second terminal device in the aforementioned method embodiments.

[0348] For example, the logic circuitry 31 is configured to perform processing-related operations performed by the second terminal device in the aforementioned method embodiments, and the input / output interface 32 is configured to perform transmission and / or reception-related operations performed by the second terminal device in the aforementioned method embodiments.

[0349] An embodiment of the present application further provides a computer-readable storage medium, which stores computer instructions for implementing the method executed by the device in the above-described method embodiment.

[0350] For example, when the computer program is executed by a computer, the computer is enabled to perform the method executed by the first terminal device in the aforementioned method embodiment.

[0351] In another example, when the computer program is executed by a computer, the computer becomes capable of performing the method executed by the second terminal device in the aforementioned method embodiment.

[0352] An embodiment of the present application further provides a computer program product, which includes instructions that, when executed by a computer, perform the method performed by a device (e.g., a first terminal device, or in another example, a second terminal device) in the above-described method embodiment.

[0353] An embodiment of the present application further provides a communication system, which includes the above-mentioned first terminal device and the above-mentioned second terminal device.

[0354] For the description of the relevant contents and beneficial effects of any one of the devices provided above, please refer to the corresponding method embodiments provided above, and the details will not be described again here.

[0355] In some embodiments provided in the present application, it should be understood that the disclosed devices and methods may be realized in other manners. For example, the described device embodiments are merely examples. For example, the division into units is merely a logical division of function, and other divisions may be used in actual implementation. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not implemented. Furthermore, the illustrated or discussed mutual couplings or direct couplings or communication connections may be implemented via some interface. Indirect couplings or communication connections between devices or units may be implemented in electronic, mechanical, or other forms.

[0356] All or part of the above-described embodiments may be implemented using software, hardware, firmware, or any combination thereof. When software is used to implement the above-described embodiments, all or part of the above-described embodiments may be embodied in the form of a computer program product. A computer program product includes one or more computer instructions. When the computer program instructions are loaded into a computer and executed, the procedures or functions according to the embodiments of the present application are performed, in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or another programmable device. For example, the computer may be a personal computer, a server, a network device, or the like. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions may be transmitted from a website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, or digital subscriber line (DSL)) or wireless (e.g., infrared, radio, or microwave) transmission. A computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device, such as a server or a data center, that integrates one or more available media. Available media may include magnetic media (e.g., floppy disks, hard disks, or magnetic tapes), optical media (e.g., DVDs), semiconductor media (e.g., solid-state drives, etc.), and the like. (S For example, the usable medium may be any medium capable of storing program code, such as a USB flash drive, a removable hard disk, a read-only memory, a (R OM), Random Access Memory (RThis may include, but is not limited to, a hard disk, a magnetic disk, or an optical disk.

[0357] The above description is merely a specific embodiment of the present application and is not intended to limit the scope of protection of the present application. Any modifications or substitutions that can be easily understood by those skilled in the art within the technical scope disclosed in the present application shall fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be subject to the scope of protection of the claims.

Claims

1. 1. A method for transmitting control information, comprising: determining a starting position of a frequency domain resource occupied by a control channel based on a quantity of configured reference signal resources, the control channel being for carrying control information, and the configured reference signal resources including a plurality of reference signal resources; and transmitting the control information on the control channel based on a starting position of the frequency domain resource; A method comprising:

2. 1. A method for transmitting control information, comprising: determining a starting position of a frequency domain resource occupied by a control channel based on a quantity of configured reference signal resources, the control channel being for carrying control information, and the configured reference signal resources including a plurality of reference signal resources; and receiving the control information on the control channel based on a starting position of the frequency domain resource; A method comprising:

3. 3. The method of claim 1, wherein a starting position of one of a plurality of sub-bands of a bandwidth of a resource pool in which the configured reference signal resource is located is used as a starting position of the frequency domain resource, and a quantity of the plurality of sub-bands is related to a quantity of the configured reference signal resources.

4. 4. The method of claim 3, wherein the bandwidths of the sub-bands are the same or different, and the sub-bands occupy all or part of the bandwidth of the resource pool.

5. 5. The method according to claim 3, wherein the quantity of the configured reference signal resources, the start positions of the frequency domain resources, and the indexes of the frequency domain resources satisfy the following relationship: [Equation 1] where RB lowest represents the starting resource block of the frequency domain resource, and N RB Total represents the bandwidth of the resource pool, and SubCH lowest represents a starting sub-channel of the frequency domain resource, and N sub Total represents the number of sub-channels included in the resource pool, and K prs represents the quantity of resources to be set, and k pscch represents an index of the frequency domain resource; [Equation 2] represents the rounding operation, and k pscch is 1 or more and K prs is less than or equal to f k is the offset value.

6. 5. The method according to claim 3, wherein the quantity of the configured reference signal resources, the start positions of the frequency domain resources, and the indexes of the frequency domain resources satisfy the following relationship: [Equation 3] where RB lowest represents the starting resource block of the frequency domain resource, and N RB Total represents the bandwidth of the resource pool, and SubCH lowest represents a starting sub-channel of the frequency domain resource, and N sub Total represents the number of sub-channels included in the resource pool, and K prs represents the number of reference signal resources to be configured, and k pscch represents an index of the frequency domain resource; [Equation 4] represents the rounding operation, and k pscch is 1 or more and K prs is less than or equal to f k is the offset value.

7. 5. The method according to claim 3, wherein the quantity of the configured reference signal resources, the start positions of the frequency domain resources, and the indexes of the frequency domain resources satisfy the following relationship: [Equation 5] where RB lowest represents the starting resource block of the frequency domain resource, and N RB Total represents the bandwidth of the resource pool, and SubCH lowest represents a starting sub-channel of the frequency domain resource, and N sub Total represents the number of sub-channels included in the resource pool, and K prs represents the number of reference signal resources to be configured, and k prs represents the index of the reference signal resource; [Equation 6] represents the rounding operation, and k 0 is a constant,method.

8. 8. The method according to claim 1 or any one of claims 3 to 7, The step of determining a starting position of a frequency domain resource occupied by a control channel based on a quantity of configured reference signal resources includes: determining a start position of a frequency domain resource occupied by a control channel based on a quantity of reference signal resources to be configured and a first index; The method, wherein the first index is an index of a first reference signal resource, the first reference signal resource being for transmitting a reference signal.

9. 10. The method of claim 8, wherein transmitting the control information on the control channel based on a starting position of the frequency domain resource comprises: transmitting the control information on the control channel based on a starting position of a sub-band corresponding to the first index; A method comprising:

10. The method according to claim 2 or any one of claims 3 to 7, wherein the step of determining a starting position of a frequency domain resource occupied by a control channel based on a quantity of configured reference signal resources comprises: determining a starting position of a frequency domain resource occupied by the control channel based on a quantity of configured reference signal resources and the first index, where the first index is an index of a first reference signal resource, and the first reference signal resource is for receiving a reference signal; A method comprising:

11. 11. The method of claim 10, wherein receiving the control information on the control channel based on a starting position of the frequency domain resource comprises: receiving the control information on the control channel based on a starting position of a sub-band corresponding to the first index; A method comprising:

12. 12. The method according to claim 8, wherein an index of each of the plurality of reference signal resources is determined based on identifiers of the plurality of reference signal resources, and an index of each of the plurality of sub-bands is determined based on a frequency-domain position corresponding to each of the plurality of sub-bands.

13. 13. The method according to claim 8, wherein, when the minimum value of the index is 0, the quantity of the configured reference signal resources, the start position of the frequency domain resource, and the index of the frequency domain resource have the following relationship: [Equation 7] or if the minimum value of the index is 1, the quantity of the configured reference signal resources, the start positions of the frequency domain resources, and the indexes of the frequency domain resources satisfy the following relationship: [Equation 8] where k prs represents the index of the frequency domain resource, and RB lowest represents the starting resource block of the frequency domain resource, and N RB Total represents the bandwidth of the resource pool, and SubCH lowest represents the starting sub-channel position of the frequency domain resource, and N sub Total represents the number of sub-channels included in the resource pool, and K prs represents the quantity of the resource to be set, [Equation 9] represents the rounding operation, and f k is the offset value.

14. 14. The method of any one of claims 1 to 13, wherein the plurality of reference signal resources are arranged in one slot; or The method of claim 1, wherein the plurality of reference signal resources are arranged in the plurality of slots, and at least one of the plurality of slots includes a plurality of frequency domain resources respectively corresponding to the plurality of control channels.

15. 15. The method according to claim 1, wherein the plurality of reference signal resources are for transmitting a plurality of reference signals, respectively, and the resource multiplexing is performed in the following multiplexing manner: Frequency division multiplexing, time division multiplexing, or comb division multiplexing , wherein the method is performed with respect to the plurality of reference signals at least one of:

16. 1. A method for transmitting control information, comprising: receiving configuration information from a network device, the configuration information being for configuring reference signal resources; determining a starting position of a frequency domain resource occupied by a control channel based on the configuration information, the control channel being for carrying control information; and transmitting the control information on the control channel based on a starting position of the frequency domain resource; A method comprising:

17. 17. The method of claim 16, wherein the configuration information includes a comb size and a frequency domain offset value corresponding to the reference signal resource.

18. 18. The method of claim 17, wherein a starting position of a first sub-band among a plurality of sub-bands of a bandwidth of a resource pool in which a reference signal resource is located is used as a starting position of the frequency-domain resource, a quantity of the plurality of sub-bands is related to the comb size, and a ranking of a first sub-band among the plurality of sub-bands is related to a frequency-domain offset value.

19. 20. The method of claim 18, wherein the bandwidths of the multiple sub-bands are the same.

20. 20. The method according to claim 17, wherein the comb size, the frequency domain offset value, and the start position of the frequency domain resource satisfy the following relationship: [Equation 10] where k prs’ represents the frequency domain offset value, and RB lowest represents the starting resource block position of the frequency domain resource, and N RB Total represents the bandwidth of the resource pool, and SubCH lowest represents the starting sub-channel position of the frequency domain resource, and N sub Total represents the number of sub-channels included in the resource pool, and C prs represents the comb tooth size, [0011] represents the rounding operation, and f k is the offset value.

21. 21. A communications device comprising a communications interface and a processor, the communications interface configured to send and receive data and / or signaling, and the processor configured to execute computer programs or instructions to enable the communications device to perform a method according to any one of claims 1 to 20.

22. 22. The apparatus of claim 21, further comprising a memory, said memory configured to store said computer program or said instructions.

23. a first terminal device, The first electronic device is configured to perform a method according to any one of claims 1, 3 to 9, or 12 to 15; and 16. A communication system, wherein the second electronic device is configured to perform a method according to any one of claims 2, 3 to 7, or 10 to 15.

24. 21. A computer readable storage medium containing a computer program or instructions which, when run on a computer, performs the method of any one of claims 1 to 20.

25. 1. A control information transmission device comprising: a processing unit configured to determine a starting position of frequency domain resources occupied by a control channel based on a quantity of configured reference signal resources, the control channel being for carrying control information, and the configured reference signal resources including a plurality of reference signal resources; and a transceiver unit configured to transmit the control information on the control channel based on a starting position of the frequency domain resource; An apparatus comprising:

26. 1. A control information transmission device comprising: a processing unit configured to determine a starting position of frequency domain resources occupied by a control channel based on a quantity of configured reference signal resources, the control channel being for carrying control information, and the configured reference signal resources including a plurality of reference signal resources; and a transceiver unit configured to receive the control information on the control channel based on a starting position of the frequency domain resource; An apparatus comprising:

27. 27. The apparatus of claim 25 or 26, wherein a starting position of one of a plurality of sub-bands of a bandwidth of a resource pool in which the reference signal resource is located is used as a starting position of the frequency domain resource, and a quantity of the plurality of sub-bands is related to a quantity of the configured reference signal resources.

28. 28. The apparatus of claim 27, wherein the bandwidths of the plurality of sub-bands are the same or different, and the plurality of sub-bands occupy all or part of the bandwidth of the resource pool.

29. 29. The apparatus according to claim 27 or 28, wherein the quantity of the configured reference signal resources, the start positions of the frequency domain resources, and the indexes of the frequency domain resources satisfy the following relationship: [0012] where RB lowest represents the starting resource block of the frequency domain resource, and N RB Total represents the bandwidth of the resource pool, and SubCH lowest represents a starting sub-channel of the frequency domain resource, and N sub Total represents the number of sub-channels included in the resource pool, and K prs represents the quantity of resources to be set, and k pscch represents an index of the frequency domain resource; [0013] represents the rounding operation, and k pscch is 1 or more and K prs is less than or equal to f k is the offset value of the device.

30. 29. The apparatus according to claim 27 or 28, wherein the quantity of the configured reference signal resources, the start positions of the frequency domain resources, and the indexes of the frequency domain resources satisfy the following relationship: [0014] where RB lowest represents the starting resource block of the frequency domain resource, and N RB Total represents the bandwidth of the resource pool, and SubCH lowest represents a starting sub-channel of the frequency domain resource, and N sub Total represents the number of sub-channels included in the resource pool, and K prs represents the number of reference signal resources to be configured, and k pscch represents an index of the frequency domain resource; [Equation 15] represents the rounding operation, and k pscch is 1 or more and K prs is less than or equal to f k is the offset value of the device.

31. 29. The apparatus according to claim 27 or 28, wherein the quantity of the configured reference signal resources, the start positions of the frequency domain resources, and the indexes of the frequency domain resources satisfy the following relationship: [0016] where RB lowest represents the starting resource block of the frequency domain resource, and N RB Total represents the bandwidth of the resource pool, and SubCH lowest represents a starting sub-channel of the frequency domain resource, and N sub Total represents the number of sub-channels included in the resource pool, and K prs represents the number of reference signal resources to be configured, and k prs represents the index of the reference signal resource; [Equation 17] represents the rounding operation, and f k is the offset value, and k 0 is a constant,device.

32. 32. The apparatus according to claim 25 or any one of claims 27 to 31, wherein the processing unit determines, based on a quantity of configured reference signal resources, a starting position of a frequency domain resource occupied by a control channel, by: determining a starting position of a frequency domain resource occupied by a control channel based on a number of set reference signal resources and a first index, wherein the first index is an index of a reference signal resource used by the transceiver unit to receive a reference signal, and the first reference signal resource is for transmitting a reference signal.

33. 33. The apparatus of claim 32, wherein the transceiver unit transmitting the control information on the control channel based on a starting position of the frequency domain resource comprises: the transceiver unit transmitting the control information on the control channel based on a starting position of a sub-band corresponding to the first index.

34. 32. The apparatus according to claim 26 or any one of claims 28 to 31, wherein the processing unit determines, based on a quantity of configured reference signal resources, a starting position of a frequency domain resource occupied by a control channel, by: The apparatus includes the processing unit determining a starting position of a frequency domain resource occupied by the control channel based on a number of set reference signal resources and a first index, wherein the first index is an index of a first reference signal resource, and the first reference signal resource is for receiving a reference signal.

35. 35. The apparatus of claim 34, wherein the transceiver unit receiving the control information on the control channel based on a starting position of the frequency domain resource comprises: the transceiver unit receiving the control information on the control channel based on a starting position of a sub-band corresponding to the first index.

36. 36. The apparatus of claim 32, wherein an index of each of the plurality of reference signal resources is determined based on identifiers of the plurality of reference signal resources, and an index of each of the plurality of sub-bands is determined based on a frequency domain position corresponding to each of the plurality of sub-bands.

37. 37. The apparatus according to claim 32, wherein, when the minimum value of the index is 0, the quantity of the configured reference signal resources, the start position of the frequency domain resource, and the index of the frequency domain resource have the following relationship: [Equation 18] or if the minimum value of the index is 1, the quantity of the configured reference signal resources, the start positions of the frequency domain resources, and the indexes of the frequency domain resources satisfy the following relationship: [Equation 19] where k prs represents the index of the frequency domain resource, and RB lowest represents the starting resource block of the frequency domain resource, and N RB Total represents the bandwidth of the resource pool, and SubCH lowest represents the starting sub-channel position of the frequency domain resource, and N sub Total represents the number of sub-channels included in the resource pool, and K prs represents the quantity of the resource to be set, [Equation 20] represents the rounding operation, and f k is the offset value of the device.

38. 38. The apparatus of any one of claims 25 to 37, wherein the plurality of reference signal resources are arranged within one slot; or the plurality of reference signal resources are arranged in the plurality of slots, and at least one of the plurality of slots includes a plurality of frequency domain resources respectively corresponding to the plurality of control channels.

39. 39. The device according to claim 25, wherein the plurality of reference signal resources are for transmitting a plurality of reference signals, respectively, and the resource multiplexing is performed in the following multiplexing manner: Frequency division multiplexing, time division multiplexing, or comb division multiplexing , wherein the apparatus is performed with respect to the plurality of reference signals at least one of:

40. 1. A control information transmission device comprising: a transceiver unit configured to receive configuration information from a network device, the configuration information being for configuring reference signal resources; a processing unit configured to determine, based on the configuration information, a starting position of a frequency domain resource occupied by a control channel, the control channel being for carrying control information; wherein the transceiver unit is further configured to transmit the control information on the control channel based on a starting position of the frequency domain resource.

41. 41. The apparatus of claim 40, wherein the configuration information includes a comb size and a frequency domain offset value corresponding to the reference signal resource.

42. 42. The apparatus of claim 41, wherein a starting position of a first sub-band among a plurality of sub-bands of a bandwidth of a resource pool in which a reference signal resource to be configured is located is used as a starting position of the frequency-domain resource, a quantity of the plurality of sub-bands is related to the comb size, and a ranking of a first sub-band among the plurality of sub-bands is related to a frequency-domain offset value.

43. 43. The apparatus of claim 42, wherein the bandwidths of the multiple sub-bands are the same.

44. 44. The apparatus according to any one of claims 41 to 43, wherein the comb size, the frequency domain offset value, and the start position of the frequency domain resource satisfy the following relationship: [0000] where k prs’ represents the domain offset value, and RB lowest represents the starting resource block position of the frequency domain resource, and N RB Total represents the bandwidth of the resource pool, and SubCH lowest represents the starting sub-channel position of the frequency domain resource, and N sub Total represents the number of sub-channels included in the resource pool, and C prs represents the comb tooth size, [Equation 22] represents the rounding operation, and f k is the offset value of the device.

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